JP7611099B2 - Syringe Cover - Google Patents

Description

The present invention relates to a syringe cover.

Medical applicators that are used to administer adhesion inhibitors, biological tissue adhesives, and other application materials into the patient's body are known.

When using an applicator, a doctor or other practitioner injects a prescribed amount of liquid, such as a dissolving solution, into a vial (container) in which the medication is stored, and then mixes and stirs the medication and liquid inside the vial to dissolve or dilute the medication. When using an applicator that is composed of two or more types of medication, two or more vials are prepared in which different medications are stored.

The following Patent Document 1 discloses a syringe connector with a double-ended needle for transferring liquid into a container using a syringe. The syringe connector of Patent Document 1 has two needle parts composed of double-ended needles, and the resistance value when one puncture part of the needle parts (first puncture part) pierces the sealing member of the container is greater than the resistance value when the other puncture part of the needle parts (second puncture part) pierces the sealing member of the syringe. Therefore, when connecting the syringe and the container, the syringe is pierced by the needle part before the container, so that the negative pressure inside the container is not released before the syringe is inserted into the container, and the liquid held inside the syringe can be automatically injected into the container.

JP 2020-156924 A

As disclosed in Patent Document 1, when injecting a liquid held by a syringe into a container containing a drug, the surgeon connects the syringe to the container and presses the plunger. If the surgeon makes a mistake when connecting the syringe to the container, the plunger of the syringe may move and the held liquid may leak. Therefore, the surgeon must perform the connection work with the utmost care to prevent the plunger from coming into contact with other surrounding members or fingers, causing unintended movement. This places a heavy burden on the surgeon in the connection work, which can reduce work efficiency.

At least one embodiment of the present invention has been made in consideration of the above circumstances, and specifically aims to provide a syringe cover that can reduce the workload by preventing leakage of liquid when connecting a syringe that holds a liquid to a container that holds a drug and injecting the liquid in the syringe into the container.

In order to solve the above problems, the syringe cover of this embodiment has a cylindrical body that holds a liquid, and a plunger that can move in the axial direction of the cylindrical body when inserted into the cylindrical body, and is a syringe cover that can be attached to a syringe that holds a specified drug and is connected to a container into which the liquid is flowed, and has a main body that covers at least the exposed portion of the plunger from the cylindrical body, and the outer surface of the main body forms a gripping portion that is gripped when connecting the syringe and the container .

According to at least one embodiment of the present invention, when a syringe holding a liquid is connected to a container holding a drug and the liquid in the syringe is injected into the container, at least the exposed portion of the plunger from the cylindrical body is covered by the syringe cover, preventing leakage of liquid due to unintended movement of the plunger and reducing the workload of the surgeon.

FIG. 1 is a schematic perspective view showing a configuration of a medical kit according to the present embodiment. FIG. 2 is a schematic perspective view showing the configurations of a syringe, a syringe side attachment device, a syringe connector, and a container according to the present embodiment. FIG. 2 is a schematic cross-sectional view for explaining a state in which the medical kit according to the present embodiment is used. 2 is a schematic perspective view showing the syringe cover according to the embodiment in an open state. FIG. 2 is a schematic perspective view showing a syringe cover according to the embodiment in a closed state. FIG. 2 is a schematic plan view of the syringe cover according to the embodiment, seen from the open surface side. FIG. 2 is a schematic cross-sectional view of a syringe cover according to the embodiment. FIG. 7 is a schematic cross-sectional view taken along line AA shown in FIG. 6. 7 is a schematic cross-sectional view taken along line BB shown in FIG. 6. 1 is a schematic configuration diagram of a syringe cover according to the embodiment of the present invention in a state before fitting, as viewed from the lower side. FIG. 13 is a schematic configuration diagram of the syringe cover according to the embodiment after fitting, as viewed from the lower side. FIG. 4 is a schematic cross-sectional view showing a fitted state between the syringe cover and the syringe side attachment according to the embodiment. FIG. 1 is a schematic partial plan view showing a fitted state between the syringe cover and the syringe side attachment according to the embodiment; FIG. 1 is a schematic perspective view showing a state in which a syringe connector of a medical kit according to the present embodiment has been detached from a container. FIG.

The following describes in detail the embodiments of the present invention with reference to the drawings. The embodiments shown here are merely illustrative in order to embody the technical ideas of the present invention, and do not limit the present invention. Furthermore, all other possible embodiments, examples, and operational techniques that can be conceived by those skilled in the art without departing from the gist of the present invention are included in the scope and gist of the present invention, and are included in the scope of the inventions described in the claims and their equivalents.

Furthermore, for the convenience of illustration and ease of understanding, the drawings attached to this specification may be depicted diagrammatically with appropriate changes in scale, aspect ratio, shape, etc. from the actual product, but these are merely examples and do not limit the interpretation of the present invention.

In the following explanation, when ordinal numbers such as "first" and "second" are used, they are used for convenience and do not dictate any particular order, unless otherwise specified.

As shown in Fig. 1, the medical kit 1 according to this embodiment includes a syringe side attachment 100, a syringe connector 200, a plurality of syringes (first syringe 310, second syringe 320), a plurality of containers (first container 410, second container 420), and a syringe cover 500. Fig. 1 shows the medical kit 1 according to this embodiment in a state in which the syringe side attachment 100 attached to each syringe 310, 320 and the syringe connector 200 connected to each container 410, 420 are connected (i.e., a state in which the liquid held by each syringe 310, 320 can be injected into each container 410, 420). The syringe cover 500 attached to the plurality of syringes (first syringe 310, second syringe 320) is attached to each of the syringes 310, 320 arranged in parallel. The medical kit 1 is configured to include multiple syringes (first syringe 310, second syringe 320) and multiple containers (first container 410, second container 420), but the number of syringes and containers may be one each, or three or more.

The uses of the medical kit 1 are not particularly limited, but for example, it can be used when injecting liquid such as a dissolving solution from each syringe 310, 320 into each container 410, 420 when using an applicator (sprayer) to administer a coating material such as an adhesion prevention material or a biological tissue adhesive.

<Container>
1 to 3, the first container 410 is a vial that holds a drug therein. The second container 420 is a vial that holds a drug of a different type from the drug held in the first container 410. The first container 410 and the second container 420 have been subjected to EB sterilization.

As shown in FIG. 3, the first container 410 is sealed by a seal member 412 arranged at the mouth 411 of the first container 410. The second container 420 is sealed by a seal member 422 arranged at the mouth 421 of the second container 420. Therefore, the inside of each container 410, 420 is configured to maintain a negative pressure until each needle 210, 220 described below pierces the seal members 412, 422 arranged at each container 410, 420.

In this embodiment, the volume of the first container 410 is configured to be smaller than the volume of the second container 420. However, the relationship between the volumes of the containers 410, 420 is not particularly limited. For example, the volume of the first container 410 may be larger, or the volumes of the first container 410 and the second container 420 may be the same.

The type of drug held in the first container 410 and the type of drug held in the second container 420 are not particularly limited, but for example, when the application material is a biological tissue adhesive, the drug held in one container can be thrombin, and the drug held in the other container can be fibrinogen. Also, when the application material is an adhesion prevention material, the drug held in one container can be carboxymethyldextrin modified with succinimidyl groups, and the drug held in the other container can be a mixture of sodium bicarbonate and sodium carbonate.

The form of the medicine held in each container 410, 420 is not particularly limited, but may be, for example, a solid (tablet, granules, etc.), a powder (powder, etc.), or a liquid.

The material of the sealing members 412, 422 placed in each container 410, 420 is not particularly limited, but examples include various rubber materials such as natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, and silicone rubber, various thermoplastic elastomers such as polyurethane-based, polyester-based, polyamide-based, olefin-based, and styrene-based, and elastic materials such as mixtures of these.

<Syringe>
As shown in Fig. 2, the first syringe 310 includes a cylindrical body 311 that holds a liquid, and a plunger 312 that is movably inserted into the cylindrical body 311 along the axial direction. A pressing portion 312a is provided on the base end side of the plunger 312 for pressing and moving the plunger 312 when discharging the liquid held in the cylindrical body 311. The first syringe 310 can discharge the liquid from a nozzle portion 313 (see Fig. 3) provided on the tip side of the first syringe 310 by the advancement of the plunger 312 inside the cylindrical body 311 (movement toward the tip side of the cylindrical body 311). The liquid discharged from the first syringe 310 is injected into the first container 410 in a connected state with the first container 410.

The second syringe 320 includes a cylindrical body 321 that holds the liquid, and a plunger 322 that is movably inserted into the cylindrical body 321 along the axial direction. A pressing portion 322a is provided on the base end side of the plunger 322 for pressing and moving the plunger 322 when discharging the liquid held in the cylindrical body 321. The second syringe 320 can discharge the liquid from a nozzle portion 323 (see FIG. 3) provided on the tip side of the second syringe 320 by the advancement of the plunger 322 inside the cylindrical body 321 (movement toward the tip side of the cylindrical body 321). The liquid discharged from the second syringe 320 is injected into the second container 420 in a connected state with the second container 420.

The type of liquid held by each syringe 310, 320 is not particularly limited, but for example, distilled water can be used.

In this embodiment, the volume of the first syringe 310 is configured to be smaller than the volume of the second syringe 320. However, the relationship between the volumes of the syringes 310, 320 is not particularly limited. For example, the volume of the first syringe 310 may be larger, or the volumes of the first syringe 310 and the second syringe 320 may be the same.

The first syringe 310 and the second syringe 320 are configured as prefilled syringes that hold liquid in advance when contained in a packaging material (when transported or stored). Therefore, as shown in FIG. 3, the first syringe 310 is provided with a seal member 314 to prevent leakage of the liquid. Similarly, the second syringe 320 is provided with a seal member 324 to prevent leakage of the liquid. The syringe side attachment 100 and the syringe cover 500 can be contained in the packaging material together with the first syringe 310 and the second syringe 320 in a state where they are attached to the first syringe 310 and the second syringe 320. In addition, the inside of each syringe 310 and 320 is AC sterilized.

The syringe side attachment 100, each of the syringes 310, 320, and the syringe cover 500 are sterilized by EB sterilization, EOG sterilization, autoclave sterilization, etc. while being contained in the packaging material. The syringe cover 500 may be attached to cover each of the syringes 310, 320 to which the syringe side attachment 100 is attached. This allows the surgeon to remove the syringe cover 500 from the packaging material and connect the syringe side attachment 100 attached to each of the syringes 310, 320 to the syringe connector 200 when starting to inject liquid from each of the syringes 310, 320 to each of the containers 410, 420. This makes it even easier to prepare for the procedure using the applicator. The syringe side attachment 100 and each of the syringes 310, 320 may be fixed by adhesive or the like.

The material of the sealing members 314, 324 placed on each syringe 310, 320 is not particularly limited, but may be, for example, the same material as the sealing members 412, 422 placed on each container 410, 420 described above.

The liquid held in each syringe 310, 320 is not limited to a prefilled state, and the surgeon may aspirate and fill each syringe 310, 320 from a container (liquid bottle) that contains the liquid. In the case where the surgeon aspirates and fills the liquid, the syringe cover 500 and each syringe 310, 320 to which the syringe side attachment device 100 is attached may be kept separate within the packaging material, and the surgeon may aspirate and fill each syringe 310, 320 with the liquid, and then attach the syringe cover 500.

<Syringe connector>
The syringe connector 200 is used when connecting a plurality of containers 410 , 420 that hold drugs to the syringe side mounting fixtures 100 mounted on the syringes 310 , 320 .

As shown in FIG. 3, the syringe connector 200 generally has a main body 201 that can be attached to each container 410, 420, and a hollow needle portion (first needle portion 210, second needle portion 220) held by the main body 201. The main body 201 of the syringe connector 200 also has a first member 230 that can be attached and detached to each container 410, 420, and a second member 240 that holds each needle portion 210, 220. As shown in FIG. 3, the main body 201 of the syringe connector 200 is configured to be connectable to the syringe side attachment 100. The syringe connector 200, including the first needle portion 210 and the second needle portion 220, has been sterilized by EB sterilization, EOG sterilization, autoclave sterilization, or the like.

3, the first needle 210 is configured as a so-called double-ended needle, having a first puncture portion 211 that protrudes toward one end side (lower side in FIG. 3) of the main body 201 and can pierce the seal member 412 arranged in the first container 410, and a second puncture portion 212 that protrudes toward the other end side (upper side in FIG. 3) of the main body 201 and can pierce the seal member 314 arranged in the first syringe 310. The second needle 220 is configured as a so-called double-ended needle, having a first puncture portion 221 that protrudes toward one end side (lower side in FIG. 3) of the main body 201 and can pierce the seal member 422 arranged in the second container 420, and a second puncture portion 222 that protrudes toward the other end side (upper side in FIG. 3) of the main body 201 and can pierce the seal member 324 arranged in the second syringe 320.

The first needle portion 210 and the second needle portion 220 have an approximately cylindrical outer shape with the first puncture portion 211, 221 and the second puncture portion 212, 222 being sharp puncture ends. The material of each needle portion 210, 220 is not particularly limited, but for example, a known metal can be used.

The first member 230 forms the outer frame of the syringe connector 200 and houses the second member 240 inside. As shown in FIG. 3, the second member 240 has a needle holder 241 that holds the first needle 210 and the second needle 220 in place.

The needle holding portion 241 has a first needle holding portion 242 that covers the periphery of the second puncture portion 212 of the first needle portion 210, thereby preventing the second puncture portion 212 from being exposed to the outside of the syringe connector 200, and a second needle holding portion 243 that covers the periphery of the second puncture portion 222 of the second needle portion 220, thereby preventing the second puncture portion 222 from being exposed to the outside of the syringe connector 200.

The main body 201 of the syringe connector 200 has a locking mechanism 250 for maintaining the connection with the syringe side attachment 100.

The locking mechanism 250 is composed of a claw portion that can be inserted into a groove portion 140 formed in the syringe side attachment 100. When the first puncture portions 211, 221 are pierced through the sealing members 412, 422 of the containers 410, 420, and when the second puncture portions 212, 222 are pierced through the sealing members 314, 324 of the syringes 310, 320, the locking mechanism 250 fits into the groove portion 140 of the syringe side attachment 100, thereby connecting the second member 240 and the syringe side attachment 100. The second member 240 and the syringe side attachment 100 maintain a connected state via the locking mechanism 250 and the groove portion 140, thereby preventing the syringe side attachment 100 from being separated from the second member 240 when the main body portion 201 is removed from each container 410, 420 as shown in FIG. 12.

As shown in Figs. 1 and 2, the side of the syringe connector 200 is provided with a locking portion 260 that locks the syringe side attachment 100 when attached to the syringe connector 200. The locking portion 260 has a structure that abuts against the side of the syringe side attachment 100 to maintain the connection with the syringe connector 200, and may be formed, for example, of a leaf spring. When the syringe side attachment 100 is attached to the syringe connector 200, the locking portion 260 locks the syringe side attachment 100 that has been correctly inserted to the attachment completion position. It is preferable to provide the locking portion 260 on only one side in order to strengthen the locking state between the syringe side attachment 100 and the syringe connector 200.

The outer surface of the syringe connector 200 is provided with a marker section 270 that indicates the mounting completion position of the syringe side attachment 100. The marker section 270 makes it easy to recognize the mounting completion position of the syringe side attachment 100 relative to the syringe connector 200. The marker section 270 has a configuration that allows the mounting completion position of the syringe side attachment 100 to be recognized (preferably a configuration that allows visual identification). The marker section 270 may be, for example, a line of the same color as the syringe side attachment 100 or a different color (any type of line) from that of the syringe side attachment 100. If the operator inserts the syringe side attachment 100 in line with the position of the marker section 270 of the syringe connector 200, the operator can easily insert the syringe side attachment 100 to the appropriate mounting completion position relative to the syringe connector 200, and the two can be appropriately connected.

The material of the syringe connector 200 (first member 230, second member 240) is not particularly limited, but examples of materials that can be used include resin materials such as polypropylene, polyethylene terephthalate, polymethyl methacrylate, polycarbonate, and ultraviolet-curing resins, glass, and ceramics.

The syringe connector 200 can be stored in a predetermined packaging material while attached to each of the containers 410, 420 (as shown in FIG. 2). The syringe connector 200 and each of the containers 410, 420 can be sterilized by EB sterilization, EOG sterilization, autoclave sterilization, or the like, and then stored in the packaging material.

<Syringe side attachment>
2 or 3, the syringe side mounting device 100 includes a first connection part 110, a second connection part 120, and a coupling part 130. The syringe side mounting device 100 is mounted on the tip side of a plurality of syringes 310, 320.

The first connection part 110 is configured to be connectable to the nozzle part 313 (see FIG. 3) of the first syringe 310. The first connection part 110 is also configured to be connectable to the first needle holding part 242 of the syringe connector 200. The second connection part 120 is configured to be connectable to the nozzle part 323 (see FIG. 3) of the second syringe 320. The second connection part 120 is also configured to be connectable to the second needle holding part 243 of the syringe connector 200.

By inserting the nozzle portion 313 of the first syringe 310 into the insertion portion 111 of the first connection portion 110, the nozzle portion 313 of the first syringe 310 can be fitted into the first connection portion 110. Also, by inserting the nozzle portion 323 of the second syringe 320 into the insertion portion 121 of the second connection portion 120, the nozzle portion 323 of the second syringe 320 can be fitted into the second connection portion 120.

As shown in FIG. 2, the connecting portion 130 has a first guide portion 131 arranged to cover at least a portion of the outer circumferential surface of the cylindrical body 311 of the first syringe 310, a second guide portion 132 arranged to cover at least a portion of the outer circumferential surface of the cylindrical body 311 of the second syringe 320, and a support portion 133 arranged between the first guide portion 131 and the second guide portion 132 and connecting the first guide portion 131 and the second guide portion 132.

The first guide portion 131 is formed in an arc shape capable of covering a portion of the outer circumferential surface of the cylindrical body 311. The second guide portion 132 is formed in an arc shape capable of covering a portion of the outer circumferential surface of the cylindrical body 321. The support portion 133 is formed in a flat plate shape extending between the first guide portion 131 and the second guide portion 132. Note that the circumferential range in which the first guide portion 131 covers the cylindrical body 311 and the circumferential range in which the second guide portion 132 covers the cylindrical body 321 are not particularly limited as long as they are within a range in which the guiding function during insertion of each cylindrical body 311, 321 and the posture maintaining function after insertion can be performed.

The syringe side attachment device 100 is provided with a fitting hole 150 into which a fitting portion 590 for mounting and fixing provided on the syringe cover 500 described later is fitted (see FIG. 10). The syringe cover 500 is attached to the syringe side attachment device 100 with the fitting portion 590 fitted into the fitting hole 150, so that the syringe cover 500, the syringe side attachment device 100, the syringe connector 200, and the syringes 310, 320 can be simultaneously detached from the containers 410, 420 together with the syringe cover 500 without coming off the syringe side attachment device 100 during the detachment operation, as shown in FIG. 12.

In addition, it is preferable that the housing of the syringe side attachment device 100 be colored in a different color from the syringe connector 200 so that the completed attachment position with the syringe connector 200 can be easily recognized.

The material of the syringe side attachment 100 is not particularly limited, and may be the same as that of the syringe connector 200, for example.

<Syringe cover>
1, the syringe cover 500 is configured to cover at least the plunger 312 of the first syringe 310 and the plunger 322 of the second syringe 320 when the first syringe 310 and the second syringe 320 are connected to the containers 410 and 420. The syringe cover 500 is attached to each of the syringes 310 and 320 arranged in parallel.

The main body 501 of the syringe cover 500 is divided into a first housing 510 and a second housing 520 as shown in FIG. 4 or FIG. 5, and is connected so as to be openable and closable via a hinge portion 530 provided at the top of each housing 510, 520 (near the upper end in FIG. 5). The syringe cover 500 is appropriately designed in terms of its outer shape and size so that it can be grasped by the surgeon when attaching and detaching each syringe 310, 320 and each container 410, 420. Thus, the outer surface of the main body 501 (the outer surfaces of the first housing 510 and the second housing 520) constitutes a gripping portion.

As shown in Figs. 4 and 6, the first housing 510 has a generally rectangular parallelepiped shape with an open surface (hereinafter referred to as the "open surface") on one side through which the first syringe 310 and the second syringe 320 can be inserted and removed. As shown in Figs. 4 and 6, the second housing 520 has a generally rectangular parallelepiped shape with an open surface on one side, similar to the first housing 510. As shown in Figs. 5, the corners along the longitudinal direction of the first housing 510 and the corners along the longitudinal direction of the second housing 520 are rounded to make it easier to grip the main body 501 of the syringe cover 500. Therefore, the syringe cover 500 has a generally rounded rectangular shape when viewed from above (or below).

5, the main body 501 is closed by moving one housing (e.g., the first housing 510) toward the other housing (e.g., the second housing 520) so that the open surface of the first housing 510 faces the open surface of the second housing 520, and abutting the end face of the open surface of the first housing 510 against the end face of the open surface of the second housing 520. The syringe cover 500 can be held by the operator when in the closed state. In addition, the main body 501 shields the plunger 312 of the syringe 310 and the plunger 322 of the syringe 320 housed in the internal space when in the closed state, and prevents the plungers 312, 322 from contacting other surrounding members or the operator's fingers during attachment and detachment operations, etc.

The main body 501 is opened by moving the end face on the open side of one housing (e.g., the first housing 510) in a direction away from the end face on the open side of the other housing (e.g., the second housing 520). This allows the syringe cover 500 to access the plungers 312, 322 of the syringes 310, 320 when the main body 501 is in the open state. Therefore, even if the surgeon makes an incorrect connection operation when connecting the syringes 310, 320 to the containers 410, 420, the surgeon can open and remove the syringe cover 500 and operate the plungers 312, 322 himself to inject the liquid held in the syringes 310, 320 into the containers 410, 420.

The hinge section 530 rotatably connects one side of the first housing 510 to the second housing 520. The main body section 501 can be opened and closed by moving the open surface of the first housing 510 and the open surface of the second housing 520 closer to or farther apart via the hinge section 530. The hinge section 530 is made of thin resin, so that it can be easily formed during resin molding of the main body section 501.

In this embodiment, the hinge portion 530 is provided so as to connect to the upper end portions of the first housing 510 and the second housing 520. That is, the hinge portion 530 is located on the upper side of the syringe cover 500 when the syringe cover 500 is in use. Therefore, when the surgeon grasps the syringe cover 500 during the connection operation, the hinge portion 530 does not come into contact with the palm of the hand, making it easy to grasp and easy to perform the connection operation. The hinge portion 530 may be provided on the side end portions of the first housing 510 and the second housing 520. In such a configuration, it is preferable to apply a smooth R processing to the corners of the hinge portion 530 or to make the hinge portion thin so that the hinge portion 530 fits comfortably in the hand when the surgeon grasps the syringe cover 500, thereby minimizing the discomfort felt when the hinge portion 530 is grasped.

As shown in FIG. 4, the inner surfaces of the first housing 510 and the second housing 520 are provided with a storage section 540 that stores and holds the first syringe 310 and the second syringe 320. The storage section 540 is composed of a first storage section 541 and a second storage section 542.

The first storage section 541 and the second storage section 542 are provided on the inner surface of the first housing 510 and the inner surface of the second housing 520, respectively, to form a space for storing and holding each of the syringes 310 and 320. The storage sections 541 and 542 provided on the first housing 510 and the storage sections 541 and 542 provided on the second housing 520 are arranged to face each other and form a pair when the main body 501 is in a closed state. Therefore, as shown in FIG. 6, the adjacent interval between the storage sections 541 and 542 provided on the first housing 510 is equal to the adjacent interval between the storage sections 541 and 542 provided on the second housing 520. This allows the syringe cover 500 to store and hold each of the syringes 310 and 320.

As shown in Figs. 4 and 7, the first storage section 541 is composed of a plate-like member erected from the inner surface of the first housing 510 and the second housing 520 toward the open surface, and a plurality of first storage sections 541 are provided on the inner surfaces of the first housing 510 and the second housing 520 at predetermined intervals (adjacent intervals) along the axial direction. The first storage section 541 stores and covers the cylindrical body 311 of the first syringe 310 and the cylindrical body 321 of the second syringe 320.

The installation positions and number of first storage units 541 relative to the first housing 510 and the second housing 520 are determined according to the overall lengths of the first syringe 310 and the second syringe 320 to be used (specifically, the lengths of the cylinders 311, 321) so that the cylinder 311 of the first syringe 310 and the cylinder 321 of the second syringe 320 can be held in contact with each other. In this embodiment, three first storage units 541 are provided at a predetermined adjacent interval from the lower end side of the first housing 510 (second housing 520) as shown in FIG. 6.

As shown in FIG. 4, the first storage section 541 has a first recess 541a that abuts and holds a portion of the outer circumferential surface of each of the cylindrical bodies 311 and 321.

8A, the first recess 541a has an approximately semicircular shape formed with a radius of curvature that matches the outer diameter size of the abutting cylindrical bodies 311 and 321. The first storage section 541 also has a boundary section 541b between the first recess 541a that stores the cylindrical body 311 and the first recess 541a that stores the cylindrical body 321. When the main body section 501 is in a closed state, the first storage section 541 of the first housing 510 and the first storage section 541 of the second housing 520 form a space that stores the cylindrical bodies 311 and 321 so as to cover the outer peripheral surfaces of the cylindrical bodies 311 and 321 in the circumferential direction. At this time, the top of the boundary section 541b of the first storage section 541 abuts against the top of the opposing boundary section 541b. Each cylindrical body 311 and 321 can be connected in a stable position without changing its position by being held by the first storage section 541.

The first recess 541a can be formed according to the outer diameter size of the cylindrical body 311 of the first syringe 310 and the cylindrical body 321 of the second syringe 320. Therefore, the first recesses 541a may have different or equal radii of curvature.

As shown in Figs. 4 and 7, the second housing 542 is composed of a plate-like member erected from the inner surface of the first housing 510 and the second housing 520 toward the open surface, and a plurality of second housings 542 are provided at predetermined intervals (adjacent intervals) along the axial direction on the inner surfaces of the first housing 510 and the second housing 520. The second housing 542 houses and covers the exposed portion of the plunger 312 located on the base end side of the flange portion 311a of the first syringe 310 and the exposed portion of the plunger 322 located on the base end side of the flange portion 321a of the second syringe 320.

The installation positions and number of the second storage sections 542 relative to the first housing 510 and the second housing 520 are determined according to the overall length of the first syringe 310 and the second syringe 320 to be used (specifically, the exposed length of the plungers 312, 322) so that the exposed portions of the plungers 312, 322 can be accommodated. In this embodiment, as shown in FIG. 6, four second storage sections 542 are provided at a predetermined adjacent interval between the first storage section 541 located at the uppermost end side of the first housing 510 (second housing 520) and the upper end of the first housing 510.

As shown in FIG. 4, the second storage section 542 has a second recess 542a that does not come into contact with the pressing section 312a of the pusher 312 and the pressing section 322a of the pusher 322 and stores the exposed portions of the pushers 312 and 322 so as not to impede the movement of the pushers 312 and 322.

8B, the second recess 542a has an approximately semicircular shape formed with a radius of curvature larger than the outer diameter size of the pressing portion 312a of the pusher 312 and the pressing portion 322a of the pusher 322 so as not to come into contact with the pressing portion 312a of the pusher 312 and the pressing portion 322a of the pusher 322. In addition, the second storage portion 542 has a boundary portion 542b between the second recess 542a that stores the pusher 312 and the second recess 542a that stores the pusher 322. When the main body portion 501 is in a closed state, the second storage portion 542 of the first housing 510 and the second storage portion 542 of the second housing 520 form a space that stores the exposed portions of the pushers 312 and 322 so as to cover them in the circumferential direction. At this time, the top of the boundary portion 542b of the second storage portion 542 abuts against the top of the opposing boundary portion 542b. When covered by the second recess 542a, each plunger 312, 322 can move relative to each cylinder 311, 321 without coming into contact with other surrounding components, and therefore can move automatically due to the negative pressure of the container 410, 420 when each syringe 310, 320 is connected to each container 410, 420.

The second recesses 542a can be formed according to the exposed portions of the pushers 312, 322 and the outer diameter sizes of the pressing portions 312a, 322a. Therefore, the second recesses 542a may have different or equal radii of curvature.

As shown in FIG. 6, the first housing 510 and the second housing 520 have a plurality of holes 550. The holes 550 are composed of a first hole 551 and a second hole 552, and are formed in pairs on the boundary of the longitudinal central axis of each housing 510, 520. The holes 550 function as vents to allow a sterilization medium, such as ethylene oxide gas or high-pressure steam, to permeate the inside of the cover during sterilization of the syringe cover 500.

The first holes 551 are provided in a plurality along the axial direction of the first housing 510 and the second housing 520. The first holes 551 have an elongated hole shape that is shorter than the second holes 552.

The second hole 552 is positioned so as to face the flange portion 311a of the cylindrical body 311 (see FIG. 11). The second hole 552 has an elongated shape like the first hole 551, and is formed longer so as to have a larger opening area than the first hole 551. Because the second hole 552 has a larger opening area than the first hole 551, a sterilization medium such as ethylene oxide gas or high-pressure steam can be sufficiently distributed inside the cover during sterilization of the syringe cover 500.

The second hole 552 is longer and has a larger opening area than the first hole 551. Therefore, the portion where the second hole 552 is formed in the first housing 510 and the second housing 520 may be thinner than other portions. If the portion is thinner, the strength of the first housing 510 and the second housing 520 may be partially reduced, and there is a high possibility that damage may occur during attachment and detachment operations. For this reason, a reinforcing portion 552a is provided on the outer surface of the portion where the second hole 552 is formed in the first housing 510 and the second housing 520.

As shown in FIG. 5, the reinforcing portion 552a is provided in the second hole portion 552 so as to cover the periphery of the end portion distal from the longitudinal central axis of each housing 510, 520. By providing the reinforcing portion 552a, the strength in the vicinity of the second hole portion 552 is increased, and damage to the syringe cover 500 during attachment and detachment operations is prevented.

As shown in Figs. 4 and 5, the first housing 510 and the second housing 520 are provided with an engagement portion 560 for maintaining the closed state. The engagement portion 560 is composed of a pair of engagement holes 561 and a pair of engagement claws 562 that engage with each of the engagement holes 561. The engagement holes 561 and the engagement claws 562 are positioned so that they can engage with each other when one housing (e.g., the first housing 510) is brought close to the other housing (e.g., the second housing 520).

As shown in FIG. 6, the engagement hole 561 is provided opposite the side end of the lower side of the first housing 510 in the width direction (left and right direction). The engagement hole 561 is provided at a position where it can engage with the engagement claw 562 of the second housing 520, which is the engagement target, when the main body 501 is in the closed state.

As shown in FIG. 6, the engagement claw 562 is provided facing the side end of the lower side of the second housing 520 in the width direction (left and right direction). The engagement claw 562 is provided at a position where it can engage with the engagement hole 561 of the first housing 510 that is the engagement target when the main body 501 is in the closed state.

As shown in FIG. 5, a plurality of protrusions 570 are provided along the axial direction at the corners of the outer surface of the first housing 510 and the corners of the outer surface of the second housing 520. In other words, a plurality of protrusions 570 are provided on the outer surface of the main body 501 that constitutes the gripping portion of the syringe cover 500.

The protrusions 570 function as anti-slip sections that prevent slippage in the vertical direction (i.e., the direction in which the syringes 310, 320 are attached to and detached from the containers 410, 420) when the surgeon grasps the main body 501 in the closed state. Therefore, when the surgeon grasps the syringe cover 500, a frictional force is generated between the protrusions 570 and the contact area with the surgeon's palm, etc., providing an anti-slip effect, allowing the surgeon to easily perform the attachment and detachment operation. There are no particular limitations on the number, size, and installation position of the protrusions 570, and they can be set appropriately depending on the size of the syringe cover 500, etc.

As shown in FIG. 7, an extension 580 having a groove at its tip is provided slightly above the center of the first housing 510. The extension 580 is provided to extend from the boundary 542b of the second housing 542 toward the open surface. The groove of the extension 580 protrudes from the open surface. The extension 580 functions as an alignment portion to facilitate fitting the first housing 510 and the second housing 520 together when the syringes 310, 320 are housed therein. The groove can fit into the top of the boundary 542b of the opposing second housing 542.

The main body 501 of the syringe cover 500 has a fitting portion 590 that fits into the fitting hole 150 provided in the syringe side attachment 100. When the main body 501 houses each syringe 310, 320 equipped with the syringe side attachment 100, the engagement hole 561 of the first housing 510 and the engagement claw 562 of the second housing 520 engage as described above, and in this state, the fitting portion 590 fits into the fitting hole 150 of the syringe side attachment 100.

As shown in Figures 9A and 9B, the mating portion 590 is composed of a mating protrusion 591 and a mating recess 592.

As shown in FIG. 9A, the mating protrusion 591 is provided so as to protrude from the top of the boundary portion 541b of the first storage portion 541 provided at the bottom of the first housing 510 toward the open surface side. As shown in FIG. 10, when the main body portion 501 is in the closed state, the mating protrusion 591 passes through the mating hole 150 provided in the syringe side attachment 100 and mated with the opposing mating recess 592.

The mating recess 592 is recessed from the top of the boundary portion 541b of the first storage portion 541 provided at the bottom of the second housing 520 toward the inner surface of the second housing 520. As shown in FIG. 10, when the main body portion 501 is in the closed state, the mating recess 592 fits with the tip portion of the mating protrusion 591 that has passed through the mating hole 150 of the syringe side attachment 100.

As shown in FIG. 11, when the main body 501 is in the closed state, the syringe cover 500 is attached to the syringe side attachment device 100 via the fitting portion 590. At this time, the syringe cover 500 is fixed to the syringe side attachment device 100 by the action of the fitting portion 590 as shown in FIG. 11, and therefore does not detach from the syringe side attachment device 100. Therefore, when the operator lifts the syringe cover 500 upward while holding the containers 410 and 420 in a fixed state as shown in FIG. 12, the syringe side attachment device 100, the syringe connector 200, and each of the syringes 310 and 320 can be detached from each of the containers 410 and 420.

The syringe cover 500 can be made of, for example, a resin material such as polypropylene, polyethylene terephthalate, polymethyl methacrylate, polycarbonate, or ultraviolet curing resin, glass, or ceramics. In addition, the syringe cover 500 is preferably made of a transparent material so that the state of the plungers 312, 322 of the syringes 310, 320 contained therein can be easily grasped.

Next, we will explain the procedure for using the medical kit 1. Note that the procedure for using the medical kit 1 shown below is merely an example, and can be modified as appropriate if other components are added.

The surgeon prepares each of the containers 410, 420 to which the syringe connector 200 is attached. When preparing the syringe connector 200 and each of the containers 410, 420, if the instruments are attached and are packed in a sterilized state in the package, the surgeon removes them from the package.

The surgeon also prepares each of the syringes 310, 320 housed in the syringe cover 500 with the syringe side attachment 100 attached. When preparing the syringe side attachment 100, each of the syringes 310, 320, and the syringe cover 500, if the instruments are attached and packed in a sterilized state in the package, the surgeon removes them from the package.

The surgeon, while holding the syringe cover 500, brings the syringe side attachment 100 attached to each syringe 310, 320 close to the syringe connector 200 attached to each container 410, 420. At this time, the surgeon connects the first connection part 110 of the syringe side attachment 100 to the first needle holding part 242 of the syringe connector 200, and connects the second connection part 120 of the syringe side attachment 100 to the second needle holding part 243 of the syringe connector 200. In addition, since the plungers 312, 322 of each syringe 310, 320 are covered by the syringe cover 500, they do not come into contact with other surrounding members or the surgeon's fingers, and therefore do not move unintentionally.

The surgeon presses the syringe side attachment 100 against the syringe connector 200. As a result, as shown in Fig. 3, the second puncture portion 212 of the first needle portion 210 can pierce the seal member 314 of the first syringe 310, and the second puncture portion 222 of the second needle portion 220 can pierce the seal member 324 of the second syringe 320. Also, as shown in Fig. 3, the surgeon can pierce the seal member 412 of the first container 410 with the first puncture portion 211 of the first needle portion 210, and pierce the seal member 422 of the second container 420 with the first puncture portion 221 of the second needle portion 220. This allows the inside of the first container 410 to communicate with the inside of the first syringe 310 via the first needle 210, and the inside of the second container 420 to communicate with the inside of the second syringe 320 via the second needle 220.

When the inside of the first container 410 and the inside of the first syringe 310 are in communication with each other, the negative pressure inside the first container 410 automatically injects liquid from the first syringe 310 into the first container 410. When the inside of the second container 420 and the inside of the second syringe 320 are in communication with each other, the negative pressure inside the second container 420 automatically injects liquid from the second syringe 320 into the second container 420. At this time, the plungers 312, 322 of the syringes 310, 320 are movably covered by the syringe cover 500, so they can be moved without coming into contact with other surrounding members or the operator's fingers.

After the liquid is injected into each of the containers 410, 420, the surgeon grasps the syringe cover 500 and removes it from each of the containers 410, 420. At this time, the syringe cover 500 is attached to the syringe side attachment device 100 by the fitting portion 590, so the syringe cover 500 does not come off from the syringe side attachment device 100 (see FIG. 10). Therefore, the surgeon can remove the syringe cover 500 from each of the containers 410, 420 while the syringe side attachment device 100, the syringe connector 200, and each of the syringes 310, 320 are connected together, simply by manipulating the syringe cover 500.

The surgeon stirs the syringe side attachment 100, the syringe connector 200, and each of the containers 410, 420 from which the syringes 310, 320 have been removed, to dissolve or dilute the drug held in each of the containers 410, 420. After dissolving or diluting the drug held in each of the containers 410, 420, the surgeon can connect each of the containers 410, 420 to an applicator (not shown) using a specified attachment or the like.

[Action and Effect]
As described above, the syringe cover 500 of this embodiment has a cylindrical body 311, 321 that holds a liquid, and a plunger 312, 322 that can move in the axial direction of the cylindrical body 311, 321 when inserted into the cylindrical body 311, 321, and is a syringe cover 500 that can be attached to a syringe that holds a predetermined drug and is connected to a container 410, 420 into which the liquid is flowed, and has a main body 501 that covers at least the exposed portions of the plungers 312, 322 that are exposed from the cylindrical body 311, 321.

With this configuration, when connecting the syringes 310, 320 holding liquid to the containers 410, 420, at least the exposed parts of the plungers 312, 322 from the cylinders 311, 321 are covered by the main body 501. Therefore, during the connecting operation, the plungers 312, 322 of the syringes 310, 320 do not come into contact with other surrounding members or with the operator's fingers during operation. Therefore, the liquid held in the syringes 310, 320 is prevented from leaking due to unintended movement of the plungers 312, 322. As a result, the operator does not need to pay attention to the unintended movement of the plungers 312, 322 when operating the medical kit 1, which significantly reduces the workload and allows the liquid held in the syringes 310, 320 to be reliably injected into the containers 410, 420.

In addition, in the syringe cover 500 according to this embodiment, the main body 501 may be configured to cover at least a portion of the cylindrical bodies 311 and 321.

With this configuration, the main body 501 covers not only the exposed portions of the plungers 312, 322 of the syringes 310, 320 from the cylindrical bodies 311, 321, but also at least a portion of the cylindrical bodies 311, 321, making it easier to connect the syringes 310, 320 to the containers 410, 420.

In addition, in the syringe cover 500 according to this embodiment, the main body 501 may be configured to cover multiple syringes 310, 320 arranged in parallel.

With this configuration, multiple syringes 310, 320 can be connected to multiple containers 410, 420 at the same time, so that the liquids held in the multiple syringes 310, 320 can be simultaneously injected into each container 410, 420. For example, when using an application material composed of two or more types of drugs, two or more containers storing different drugs and syringes holding the liquids to be injected into each container are prepared, but even in such a case, the application material can be easily prepared.

In addition, in the syringe cover 500 according to this embodiment, the outer surface of the main body 501 may be configured to form a gripping portion that is gripped when connecting the syringes 310, 320 and the containers 410, 420.

This configuration allows the surgeon to connect or disconnect the syringes 310, 320 to the containers 410, 420 while holding the syringe covers 500 attached to the syringes 310, 320, making the operation easier.

In addition, in the syringe cover 500 according to this embodiment, the main body 501 may include a first housing 510 having a generally rectangular parallelepiped shape with an open surface on one side through which the syringes 310, 320 can be inserted and removed, a second housing 520 having a generally rectangular parallelepiped shape with an open surface on one side through which the syringes 310, 320 can be inserted and removed, and a hinge portion 530 that rotatably connects the ends of the first housing 510 and the second housing 520, and may be configured to cover the syringes 310, 320 in a closed state in which the end face on the open side of the first housing 510 and the end face on the open side of the second housing 520 are abutted against each other.

With this configuration, the syringe cover 500 can be closed while housing the syringes 310, 320, thereby preventing the plungers 312, 322 of the syringes 310, 320 from coming into contact with other surrounding members or the operator's fingers. Even if the operator makes an incorrect connection operation when connecting the syringes 310, 320 to the containers 410, 420, the plungers 312, 322 of the syringes 310, 320 can be accessed by opening the syringe cover 500, so the operator can operate the plungers 312, 322 themselves to inject the liquid held in the syringes 310, 320 into the containers 410, 420.

In addition, in the syringe cover 500 according to this embodiment, the hinge portion 530 may be configured to connect the upper end of the first housing 510 and the upper end of the second housing 520.

With this configuration, when attaching or detaching the syringe cover 500 in the closed state, the hinge portion 530 does not come into contact with the surgeon's palm, making it easier to grip.

The syringe cover 500 according to this embodiment also has a housing portion 540 on the inner surface of the main body portion 501 that houses and covers a portion of the cylindrical bodies 311 and 321 of the syringes 310 and 320, respectively, and a portion of the exposed portion of the plungers 312 and 322 from the cylindrical bodies 311 and 321.

This configuration makes it possible to prevent the plungers 312, 322 from coming into contact with other surrounding components or the surgeon's fingers when connecting the syringes 310, 320 to the containers 410, 420 while keeping the position of the syringes 310, 320 stable.

In addition, in the syringe cover 500 according to this embodiment, the housing 540 may be configured as a first housing 541 having a first recess 541a that houses the cylindrical bodies 311, 321 of the syringes 310, 320 in a state of abutting against a part of the cylindrical bodies 311, 321, and a plurality of first housings 541 arranged at a predetermined adjacent interval along the axial direction of the first housing 510 and the second housing 520, and a second recess 542a that houses the exposed parts of the plungers 312, 322 that are located on the base end side of the flange parts 311a, 321a provided on the base end side of the cylindrical bodies 311, 321 of the syringes 310, 320 by movably covering the plungers 312, 322, and a plurality of second housings 542 arranged at a predetermined adjacent interval along the axial direction of the first housing 510 and the second housing 520.

With this configuration, the cylinders 311, 321 of the syringes 310, 320 are held in contact with the first housing 541, so that attachment and detachment can be performed in a stable position without any change in position. In addition, the exposed parts of the plungers 312, 322 of the syringes 310, 320 are covered by the second housing 542 so that the plungers 312, 322 can move, so that the movement of the plungers 312, 322 during the connection operation is not impeded and unintended movement due to contact with other surrounding members or the surgeon's fingers can be prevented.

In addition, in the syringe cover 500 according to this embodiment, the lower end of the main body 501 may be configured to have a fitting portion 590 that can fit into a fitting hole 150 provided in the syringe side attachment 100 to which the nozzle portions 313, 323 of the syringes 320, 320 are connected.

With this configuration, the fitting portion 590 can be fitted into the fitting hole 150 of the syringe side attachment device 100, so that the main body portion 501 can be attached to the syringe side attachment device 100. Therefore, the syringe cover 500 does not come off from the syringe side attachment device 100 when the syringes 310, 320 are removed from the containers 410, 420. Therefore, the surgeon can easily remove the syringes 310, 320 from the containers 410, 420 while holding the syringe cover 500.

In addition, in the syringe cover 500 according to this embodiment, the fitting portion 590 is composed of a fitting protrusion 591 provided at the lower end of the first housing 510 so as to protrude toward the open surface side, and a fitting recess 592 provided at the lower end of the second housing 520 at a position where the tip of the fitting protrusion 591 can fit when the first housing 510 and the second housing 520 are in a closed state, and the first housing 510 and the second housing 520 may be configured to be attached to the syringe side attachment 100 by fitting the fitting protrusion 591 inserted into the fitting hole 150 of the syringe side attachment 100 with the fitting recess 592.

With this configuration, when the first housing 510 and the second housing 520 are closed, the first housing 510 and the second housing 520 can be attached to the syringe side attachment 100 by fitting the mating protrusion 591 of the first housing 510 into the mating hole 150 of the syringe side attachment 100 and then fitting it into the mating recess 592 of the second housing 520. Therefore, the syringe cover 500 does not come off from the syringe side attachment 100 when the syringes 310, 320 are removed from the containers 410, 420. Therefore, the surgeon can easily remove the syringes 310, 320 from the containers 410, 420 while holding the syringe cover 500.

In addition, in the syringe cover 500 according to this embodiment, the outer surface of the main body 501 may be configured to have multiple anti-slip protrusions 570 along the axial direction.

With this configuration, when the surgeon grasps the syringe cover 500, friction is generated between the protrusion 570 and the contact area with the surgeon's palm, etc., creating an anti-slip effect, making it easy to attach and remove the syringe cover.

In addition, in the syringe cover 500 according to this embodiment, the main body 501 has a plurality of first holes 551 arranged along the axial direction and second holes 552 arranged at the locations where the flanges 311a and 321a of the syringes 310 and 320 are located, and the second holes 552 may be configured to have a larger opening area than the first holes 551.

This configuration allows the sterilization medium, such as ethylene oxide gas or high-pressure steam, which has a sterilizing effect, to be sufficiently distributed inside the cover when the syringe cover 500 is sterilized.

1 medical kit,
100 Syringe side attachment,
150 fitting hole,
200 Syringe connector,
310, 320 first syringe,
311, 321: cylindrical body (311a, 321a: flange portion),
312, 322 pusher,
313, 323 nozzle portion,
410, 420 container,
500 Syringe cover (501 Main body part),
510 first housing,
520 second housing,
530 hinge portion,
540 storage section,
541 first storage portion (541a first recess, 541b boundary portion),
542 second storage portion (542a second recess, 542b boundary portion),
550 hole,
551 first hole portion,
552 second hole portion (552a reinforcement portion),
560 engagement portion,
561 engagement hole,
562 engagement claw,
570 protrusion,
580 extension part,
590 fitting portion,
591 fitting protrusion,
592 mating recess.

Claims (11)

A cylinder holding a liquid;
a pusher that is movable in an axial direction of the cylindrical body while being inserted into the cylindrical body;
A syringe cover that can be attached to a syringe that holds a predetermined drug and is connected to a container into which the liquid flows,
a main body portion for covering at least an exposed portion of the plunger from the cylindrical body;
A syringe cover , wherein an outer surface of the main body portion constitutes a gripping portion that is gripped when connecting the syringe and the container . The syringe cover of claim 1, wherein the main body also covers at least a portion of the cylinder. The syringe cover according to claim 1 or 2, wherein the main body covers a plurality of the syringes arranged in parallel. The main body portion is
a first housing having a generally rectangular parallelepiped shape and an open surface through which the syringe can be inserted and removed;
a second housing having a generally rectangular parallelepiped shape and having an open surface through which the syringe can be inserted and removed;
a hinge portion that rotatably connects ends of the first housing and the second housing to each other;
Equipped with
The syringe cover according to any one of claims 1 to 3 , which covers at least a portion of the syringe in a closed state in which an end face of the open side of the first housing and an end face of the open side of the second housing are abutted against each other. The syringe cover according to claim 4 , wherein the hinge portion is provided to connect an upper end of the first housing and an upper end of the second housing. The syringe cover according to claim 4 or 5 , wherein an inner surface of the main body has accommodation portions that accommodate and cover a part of the cylindrical body of the syringe and a part of the exposed part of the plunger from the cylindrical body. The storage section includes:
a first housing portion including a first recess that houses the cylindrical body of the syringe in a state of contacting a part of the cylindrical body, the first housing portion being disposed at a predetermined adjacent interval along an axial direction of the first housing and the second housing;
a second recess for movably covering and housing the exposed portion of the pusher located on the base end side of a flange portion provided on the base end side of the cylindrical body of the syringe, the second housing being disposed at a predetermined adjacent interval along the axial direction of the first housing and the second housing;
The syringe cover according to claim 6 , comprising: a syringe side attachment device that has a connection part that is connected to a nozzle part of the syringe and a fitting hole that is exposed and provided above the connection part, and is attached to a tip side of the syringe;
A syringe cover as described in any one of claims 4 to 7, wherein a fitting portion is provided at a lower end of the main body portion opposite the hinge portion, which fits into the fitting hole when the first housing and the second housing of the main body portion are in a closed state . The fitting portion is
a fitting protrusion provided at a lower end of the first housing so as to protrude toward the open surface;
a fitting recess provided at a lower end of the second housing at a position where the fitting recess can be fitted into a tip of the fitting protrusion when the first housing and the second housing are in a closed state,
The syringe cover according to claim 8, wherein the first housing and the second housing are attached to the syringe side attachment device by engaging the mating convex portion inserted into the mating hole of the syringe side attachment device with the mating concave portion. The syringe cover according to claim 1 , wherein an outer surface of the main body is provided with a plurality of anti-slip projections along the axial direction. The main body portion has a plurality of first holes arranged along an axial direction,
A second hole portion is disposed at a location where the flange portion of the syringe is located,
The syringe cover according to claim 1 , wherein the second hole portion has an opening area larger than that of the first hole portion.