JP4711062B2 - Manual connector for medical connector - Google Patents

Description

  The present invention preferably relates to an improvement in the internal configuration of a manual connector for a medical connector used for peritoneal dialysis.

  Peritoneal dialysis (CAPD) uses the peritoneum as a dialysis membrane, and a peritoneal dialysis set with a bag containing dialysate is connected to the abdominal cavity catheter implanted in the patient's abdominal cavity. And then drained after a certain period of storage. The dialysate is stored for a certain period of time, and blood purification is performed by removing waste products and water due to the difference in solute concentration and osmotic pressure generated between the dialysate and blood in capillaries distributed in the peritoneum.

  Peritoneal dialysis consists of a cycle of draining, changing bags, injecting dialysate, and storing as described above, and patients must perform this cycle frequently 3 to 5 times a day. This is a very troublesome operation. Of particular concern is the attachment / detachment of the patient-side connector (first connector) provided at the distal end of the extension tube connected to the abdominal catheter and the dialysate-side connector (second connector) of the set with the dialysate bag. Since attachment of bacteria to the connector at the time of detachment causes peritonitis, sufficient caution is required. Further, the problem at the time of attaching and detaching the connector is not only the adhesion of bacteria, but there is a possibility that a serious situation such as a connection error or a liquid leakage may be caused by an erroneous operation of a patient's manual operation with inconvenient eyes or hands.

  Patent Document 1 below proposes a manual connector desorption device for solving such a problem. FIG. 17 conceptually shows a connector attaching / detaching procedure when this manual attaching / detaching device is used. FIG. 17A shows a preparatory stage before connecting the patient side connector and the dialysate side connector. First, the patient side connector 100 is provided at the distal end of the catheter inserted into the abdominal cavity of the patient side 300. A cap 101 is provided. On the other hand, on the dialysis side, a dialysate-side connector 200 is provided at the tip of the Y-shaped tube, and a connector cap 201 is provided. A dialysate bag 301 and a drainage bag 302 are connected to the tip of the Y-shaped tube, and one of them is connected to the patient side by a valve.

  In the set state of FIG. 17A, the patient side connector 100 and the connector cap 201 are arranged in parallel, and the connector cap 101 and the dialysate side connector 200 are also arranged in parallel.

  In order to separate the connector cap 101 and the patient side connector 100 from this set state, the connector cap 101 is rotated and both are separated. At the same time, in order to separate the connector cap 201 and the dialysate side connector 200, the dialysate side connector 200 is rotated and both are separated. This is shown in FIG.

  Next, as shown in FIG. 17 (c), the patient side connector 100 and the connector cap 201 are slid in the direction of the arrow in the figure so that the patient side connector 100 and the dialysate side connector 200 face each other. Next, as shown in FIG. 17 (d), the patient-side connector 100 and the dialysate-side connector 200 are moved and moved along the axial direction, and the dialysate-side connector 200 is rotated so that both are connected. . In this connected state, the dialysate stored in the abdominal cavity of the patient is discharged into an empty drain bag 302. Then, the dialysate in the dialysate bag 301 is injected into the abdominal cavity by switching the valve.

  When the injection of dialysate is completed, the reverse procedure is followed, and the connector caps are put on the respective connectors again. In this case, a new connector cap is prepared and set.

  As described above, it is necessary to perform an operation as shown in FIG. 17 until the connectors are connected to each other. In Patent Document 1, when the handle is rotated by 180 °, the first stage of this rotation operation area ( A mechanism is incorporated in which a) → (b), (b) → (c) in the second stage, and (c) → (d) in the third stage.

Japanese Patent No. 3455701

  As described above, it is necessary to move the connector cap and the holder holding the connector as described above in various directions such as rotation, movement along the axial direction, and slide movement by one-way operation of the handle. Therefore, the operation mechanism is complicated. Further, it is necessary to rotate the handle by 180 °. However, in order to cause the holder to perform various movements inside, the operation angle tends to be large, and it cannot be said that the operability is good.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a manual attachment / detachment device for a medical connector that simplifies an operation mechanism and improves operability.

In order to solve the above problems, a manual connector for a medical connector according to the present invention comprises:
In order to attach and detach the medical connector composed of the first connector and the second connector,
A first connector holder and a first cap holder capable of holding the first connector and the first connector cap, respectively, with the first connector cap coupled to the first connector by a screw type inserted;
A second connector holder and a second cap holder capable of holding the second connector and the second connector cap, respectively, with the second connector cap inserted into the second connector;
While the first connector holder and the second cap holder are arranged in parallel, the first cap holder and the second connector holder are arranged in parallel,
A manual desorption device for a medical connector provided with an operation unit for operating desorption of the connector,
In order to set the first connector with the first connector cap in the first connector holder, a drawer support that is pulled out of the apparatus main body ,
An auxiliary holder that supports the first connector and is connected to the first connector holder when the drawer support is housed in the apparatus body;
The auxiliary holder is pivotally supported with respect to the drawer support, and the auxiliary holder connected to the first connector holder is rotated together with the first connector holder in conjunction with the process of storing the drawer support in the apparatus main body. Thus, the first connector supported by the auxiliary holder is rotated around the axis, and an auxiliary holder connecting member for loosening the coupling between the first connector and the first connector cap is provided. is there.

  The operation and effect of such a manual connector for a medical connector will be described. As a premise, the first connector and the first connector cap are coupled by a screw type, and the first connector cap can be connected to and disconnected from the first connector by rotating the first connector cap. That is, what is accompanied by a rotation operation is called a screw type, and is a designation for distinguishing it from a structure that can be connected and separated only by movement in the axial direction. Therefore, the present invention is not limited by the size of the rotation operation angle.

  In order to connect the first connector and the second connector, first, it is necessary to set the first connector with the first connector cap on the first connector. Therefore, the drawer portion is pulled out from the apparatus main body, and the first connector with the first connector cap is set. The first connector or the first connector cap is rotated around the axis in the step of storing the drawer portion in which the first connector is set in the apparatus main body. As a result, the connection between the first connector and the first connector cap is loosened, and preparations for separating both are completed. Here, the axis corresponds to the center of rotation when the above-described rotation operation is performed.

  After the drawer is stored, the operation up to the connection (or preparation for connection) of the first connector and the second connector can be performed by operating the operation unit. Therefore, in the present invention, not all operations are performed by operating the operation unit, but a predetermined operation is performed by the storing step of the drawer unit and the operation of the operation unit. Therefore, the operation mechanism can be simplified, the operation amount of the operation unit can be reduced, and the operability can be improved. As a result, it is possible to provide a medical connector manual attachment / detachment device that simplifies the operation mechanism and improves operability.

In the present invention, in the first operation region of the operation unit, the first cap holder is advanced in conjunction with the rotation operation of the operation unit , whereby the first connector and the first connector cap are separated from each other along the axial direction. A cap separating means;
In a second operation area following the first operation area, the first connector cap and the second connector arranged in parallel or the first connector and the second connector cap are connected to a predetermined axis in conjunction with the rotation operation of the operation section. A holder rotating means for rotating around the core and moving the first connector and the second connector and the first connector cap and the second connector cap so as to face each other;
In the third operation area following the second operation area , the first connector and the second connector are brought close to each other along the axial direction by retracting the second connector holder in conjunction with the rotation operation of the operation section. It is preferable to include a connector proximity means to be moved.

The operation area by the operation unit can be roughly divided into a first operation area, a second operation area, and a third operation area. The operation in each operation area is as follows.
(1) In a 1st operation area | region, both are isolate | separated by moving the 1st connector and 1st connector cap which are in the loose state along an axial direction.
(2) In the second operation area, the holder is moved so that the first connector and the second connector face each other and the first connector cap and the second connector cap face each other. Here, in the prior art, the holder is moved horizontally, but in the present invention, since it is rotated around a predetermined axis, a space for three rows of connectors (indicated by W in FIG. 17) is unnecessary. Therefore, the space for two rows of connectors is sufficient. When rotating, at least the following two modes can be considered.
(2-1) The first connector cap and the second connector are rotated while the first connector and the second connector cap are fixed. The center of rotation can be the center of the first connector cap and the second connector.
(2-2) The first connector cap and the second connector cap are rotated while the first connector cap and the second connector are fixed. The rotation center can be the center of the first connector and the second connector cap.
(3) In the third operation region, the first connector and the second connector are moved so as to be close to each other along the axial direction.

  The complete connection between the first connector and the second connector is performed by pulling out the drawer portion from the apparatus main body. As described above, the movement mode of the holder that holds the connector and the connector cap can be devised to prevent the apparatus from becoming large.

  As a configuration for rotating the first connector in the step of storing the drawer portion, a drawer support, an auxiliary holder, and a connecting member can be provided. The auxiliary holder is rotatably coupled to the drawer support by a connecting member, and the auxiliary holder is connected to the first connector holder in the step of storing the drawer portion, and subsequently, the auxiliary holder and the first connector holder are both Rotate a predetermined angle. Thereby, a 1st connector rotates with respect to a 1st connector cap, and can loosen the coupling | bonding of a 1st connector and a 1st connector cap.

  A preferred embodiment of a manual connector for a medical connector according to the present invention will be described with reference to the drawings. First, a preferred embodiment of the medical connector will be described.

<Medical connector>
As explained at the beginning, the medical connector according to the present invention is preferably used in peritoneal dialysis (CAPD), and is composed of a patient side connector and a dialysate side connector. The structure of these connectors is shown in FIG.

  FIG. 1A shows the configuration of the first connector 1 on the patient side. The first connector 1 is provided with a connector connecting portion 11 on the distal end side of the tube 10. A knob portion 12 for performing a connection operation in the connector connecting portion 11 and a flange 13 positioned at the boundary between the knob portion 12 and the connector connecting portion 11 are provided. The connector connecting portion 11 is provided with an O-ring 14 and a cam groove 15. By providing the O-ring 14, leakage of dialysate is prevented. The knob portion 12 is provided with two protruding portions 12a for operation in the circumferential direction.

  When the cam groove 15 is developed along the circumferential direction, a view as shown in FIG. The same cam groove 15 is formed in the circumferential direction at 180 ° intervals. The cam groove 15 has a first region 15a and a second region 15b. The first region 15a occupies a region of 45 ° in the circumferential direction and is an inclined groove. The second region 15b also occupies a 45 ° region in the circumferential direction, and is a straight groove along the circumferential direction.

  The connector connecting portion 11 can be covered with the first connector cap 3, and two protrusions 30 for operation are provided in the circumferential direction. Engagement protrusions 31 that engage with the cam grooves 15 are provided at two locations inside the first connector cap 3. Therefore, when the first connector cap 3 is put on the first connector, the engagement protrusion 31 is aligned with the entrance of the cam groove 15 (see FIG. 1C), and the first connector cap 3 is rotated ( The first connector cap 3 may be rotated), and the first connector cap 3 may be rotated and moved in the axial direction (left-right direction in FIG. 1) to cover the first connector cap 3 with the first connector cap 3. it can. FIG. 2A shows a state where the first connector 1 and the first connector cap 3 are completely connected.

  FIG. 1C shows the configuration of the second connector 2 on the dialysate side. The second connector 2 is provided with a connector connecting portion 21 on the distal end side of the Y-shaped tube 20. A drain bag and a dialysate bag are connected to the Y tube 20. The connector connecting portion 21 has two protruding portions 21a for operation in the circumferential direction.

  The connector connector 21 can be covered with the second connector cap 4. The second connector cap 4 is provided with a knob portion 40, and operation protrusions 40 a are formed at two locations in the circumferential direction of the knob portion 49. At the tip of the second connector cap 4, two engaging claws 41 for coupling with the connector connecting portion 21 are provided.

  FIG. 2B shows a state in which the second connector 2 and the second connector cap 4 are coupled, and the connector connecting portion 21 is provided with an engaging groove 22 that engages the tip of the engaging claw 41. It has been. Therefore, when the second connector 2 and the second connector cap 4 are coupled, the engagement groove 22 of the second connector 2 and the position of the engagement claw 41 of the second connector cap 4 in the circumferential direction are aligned, and the axis line is maintained. It can couple | bond by inserting the 2nd connector cap 4 along a direction. That is, when the second connector 2 and the second connector cap 4 are coupled, no rotation operation is required, and the second connector 2 and the second connector cap 4 can be attached / detached only by horizontal movement.

  When exchanging the dialysate, the first connector cap 3 of the first connector 1 on the patient side is removed, and the second connector cap 4 of the second connector 2 on the dialysate side is also removed, so that the first connector 1 and the second connector are removed. 2 are connected. The connection completion state is shown in FIG. Similarly to the first connector cap 3, an engagement protrusion 23 is provided inside the connector connection portion 21 of the second connector 2 and can be engaged with the cam groove 15. Therefore, the operation when the second connector 2 is attached to the first connector 1 is the same as the operation when the first connector cap 3 is attached (rotation operation + movement in the axial direction).

  The first connector cap 3 and the second connector cap 4 can also be attached to each other. An engagement groove 32 that engages with the engagement claw 41 of the second connector cap 4 is provided inside the first connector cap 3, similarly to the second connector. When the first and second connector caps 3 and 4 are coupled, a rotation operation is not necessary, and an operation only in the axial direction is sufficient.

  The first connector 1 on the patient side needs to be connected to the dialysate bag at the time of exchanging dialysate (at the time of discharge / infusion), and the connection state of the first connector 1 until the next dialysate exchange Need to be protected from accidental removal. Therefore, the detachment operation of the first connector 1 and the second connector 2 and the first connector 1 and the first connector cap 3 is performed by a rotation operation.

  In addition, the second connector 2 on the dialysate side only needs to be protected until the product outer packaging is opened and connected to the first connector 1 on the patient side. Therefore, the detaching operation of the second connector 2 and the second connector cap 4 is only moved in the axial direction.

<Configuration of manual connector for medical connector>
Next, the manual attachment / detachment device for the medical connector described in FIGS. 1 and 2 will be described. FIG. 3 is a perspective view showing a configuration of a main part of the apparatus, and shows a state in which the first connector 1 and the second connector 2 are held with the connector caps 3 and 4 covered. FIG. 4 is a diagram showing an internal structure viewed from a direction different from that in FIG. 3 in a state where a connector is not inserted and a part of the components is removed.

  The main disk 50 (corresponding to the operation unit) is a member that is rotated by a manual rotation operation, and when operated in the direction of arrow A in FIG. 3, the connector caps 3 and 4 of the first connector 1 and the second connector 2 are respectively axis lines After moving in the direction and being separated, the first connector 1 and the second connector 2 face each other, and then move further in the axial direction so as to approach (insert) each other. At the same time, the connector caps 3 and 4 of the connectors 1 and 2 can be brought close to each other (inserted).

  When the main disk 50 is operated in the direction of arrow B, the reverse operation is performed, separating the first connector 1 and the second connector 2 and inserting new connector caps 3 and 4 into the respective connectors 1 and 2. be able to. The main disk 50 can rotate around the disk rotation shaft 51.

  A cam plate 53 is integrally provided below the disk rotation shaft 51. When the main disk 50 is rotated, the cam plate 53 is also rotated integrally. A cam groove 52 is formed on the cam plate 53, and a partial gear 53a is formed on the side surface.

  The first connector holder 60 supports the first connector 1 with the first connector cap 3 attached to the patient-side first connector 1. The first connector holder 60 includes a main body 61 formed in a substantially C shape, and a slit 61 a for receiving the auxiliary holder 70 from the horizontal direction is formed in the main body 61. The auxiliary holder 70 is provided with a first housing recess 70a for inserting the first connector 1 with the first connector cap 3 attached thereto from above. The knob portion 12 of the connector 1 is stored in the first storage recess 70a, and the tube 10 is stored in the second storage recess 70b. Accordingly, the first connector 1 is supported by the first connector holder 60 via the auxiliary holder 70.

  A flange 61 b is formed at the end of the first connector holder 60, and defines the position of the end face of the first connector cap 3. The first connector holder 60 is rotatably supported around an axis, and the rotation angle is set to 90 °.

  The drawer support 71 is configured to be slidable along the arrow direction in FIG. 4, and includes a bottom support plate 71 a, an upper support plate 71 b, and a connection plate 71 c that connects them, and is generally U-shaped. Is formed. The bottom support plate 71a is provided with a bearing portion 71d that rotatably supports the first shaft support portion 72a of the auxiliary holder connecting member 72. The auxiliary holder 70 is provided with a bearing portion 70c that rotatably supports the second shaft support portion 72b of the auxiliary holder connecting member 72. With this configuration, the auxiliary holder 70 is pivotally supported with respect to the drawer support 71.

  A first guide rail 73 and a second guide rail 74 are provided to allow the drawer support 71 to slide. The drawer support 71 is movable along the first guide rail 73, and a guide groove is formed on the back side of the bottom support plate 71a. Further, the first guide rail 73 is movable along the second guide rail 74, and a guide groove for the first guide rail 73 is formed in the first guide rail 73.

  The first connector holder 60 is pivotally supported on a holder support 62 by a bearing mechanism (not shown) so as to be rotatable. A support frame 63 is integrally attached to the holder support 62, and the second guide rail 74 is supported.

  According to the above configuration, after the drawer support 71 is slid and the auxiliary holder 70 is inserted into the first connector holder 60, both the auxiliary holder 70 and the first connector holder 60 can be rotated by 90 °. As a result, the first connector 1 can be rotated with the first connector cap 3 fixed, and a previous operation for separating the two can be performed.

  The rotation operation range of the main disk 50 can be divided into three areas: a first operation area S1, a second operation area S2, and a third operation area S3. In the first operation region S1, the first connector cap 3 is moved along the axial direction and pulled away from the first connector 1. At the same time, the second connector 2 is also moved along the axial direction and pulled away from the second connector cap 4. In the second operation region S2, the first connector 1 and the second connector 2 face each other, and the first connector cap 3 and the second connector cap 4 face each other. In the third operation region S3, the second connector 2 is moved along the axial direction and inserted into the first connector 1. At the same time, the first connector cap 3 is moved along the axial direction and inserted into the second connector cap 4 to connect them.

  In FIG. 3, a drum shaft 80 is a member that supports a later-described drum 90, and supports the drum 90 by a main body portion 82 so as to be rotatable about the axis of the shaft. A cam interlocking portion 83 is formed integrally with the main body portion 82 of the drum shaft 80 and functions as a follower that engages with the cam groove 52 formed in the cam plate 53. Therefore, when the main disk 50 is rotated, the cam plate 52 is also rotated integrally, but the movement corresponding to the cam groove 52 formed in the cam plate 53 can be performed on the drum shaft 80, that is, the drum 90.

  The shape of the cam groove 52a is shown in FIG. The first operation area S1 corresponds to a rotation angle of 37 ° of the main disk 51, and is an area in which the drum shaft 80 can advance along the axial direction. This region is a region in which the first connector 1 and the first connector cap 3, the second connector 2 and the second connector cap 4 are separated from each other and completely separated.

  The second operation region S2 corresponds to a rotation angle of 86 °, and an arc-shaped cam groove 52b having a large radius with the disc rotation shaft 51 as the center is formed. In this region, the drum shaft 80 does not move, but the drum 90 is allowed to rotate. That is, the first connector 1 and the second connector 2 and the first connector cap 3 and the second connector cap 4 are moved so as to face each other.

  The third operation region S3 corresponds to a rotation angle of 37 °, and a cam groove 52c that is symmetrical to the cam groove 52a of the first operation region S1 is formed, and moves in the reverse direction to the first operation region S1. That is, the drum shaft 80 is retracted. As a result, the second connector 2 is moved close to and inserted into the first connector 1, and at the same time, the first connector cap 3 is moved close to and inserted into the second connector cap 4.

  The drum 90 is inserted into the drum shaft 80 and can move forward and backward integrally with the drum shaft 80. Further, the drum 90 can rotate around the axis of the drum shaft 80.

  In the drum 90, a main body portion 91 inserted into the drum shaft 80, a first cap holder 92 that holds the first connector cap 3, and a second connector holder 93 that holds the second connector 2 are integrally formed. Are combined. A slit 92a is formed in the first cap holder 92, and the first connector cap 3 is allowed to be inserted from the lateral direction. Further, the protruding portion 30 of the first connector cap 3 is fitted into the groove portion 92 c, and the first connector cap 3 is held so as not to rotate in the first cap holder 92. Further, the first cap holder 92 is formed with an elastically deformable claw 92a, which securely holds the first connector cap 3. Thereby, the 1st connector 1 can be rotated in the state where the 1st connector cap 3 was fixed.

  The second connector holder 93 is formed with a slit 93a for allowing the second connector 2 to be inserted from the lateral direction. A groove (not shown) that is the same as the groove 92 c of the first cap holder 92 is provided so that the second connector 2 does not rotate in the second connector holder 93 by using the protruding portion 21 a of the second connector 2.

  A driving gear 91 a is formed at the tip of the main body 91. The drive gear 91a is not formed on the entire circumference, but is formed to the extent that the drum 90 is sufficient to rotate 180 °. Accordingly, the region where the drive gear 91a is formed may be approximately 180 ° in the circumferential direction.

  The first intermediate gear 94 can mesh with the drive gear 91 a of the main body 91. A second intermediate gear 95 whose rotation axis is orthogonal to the first intermediate gear 94 is provided, and the second intermediate gear 95 has a first gear portion 95a and a second gear portion 95b. The first intermediate gear 94 meshes with the second gear portion 95b of the second intermediate gear 95 that is a face gear. Thereby, a driving force is transmitted in the orthogonal direction. In addition, you may comprise so that a driving force may be transmitted using a bevel gear mechanism.

  The holder 90, the first intermediate gear 94, and the second intermediate gear 95 can be configured as an integrated unit. That is, the drive gear 91a and the first and second intermediate gears 94 and 95 can always be in mesh with each other. However, according to the present invention, the first and second intermediate gears 94 and 95 and the holder 90 are not integrated units, and the first and second intermediate gears 94 and 95 are moved when the holder 90 (drive gear 91a) moves forward. 2 The structure which connects with the intermediate gears 94 and 95 for the first time may be employ | adopted.

  The partial gear 53 a formed on the side surface portion of the cam plate 53 meshes with the first gear portion 95 a (spur gear) of the second intermediate gear 95. In the second operation region S2 described above, the partial gear 53a, the second intermediate gear 95, the first intermediate gear 94, and the drive gear 91a are connected, so that the drum 90 can be rotated around the drum shaft 80. The axis of the drum shaft 80 is positioned at the exact center of the line segment connecting the axis of the first connector 1 and the axis of the second connector 2.

  A second cap holder 45 is provided at a position facing the second connector holder 93, and a slit (not shown) is formed in the same manner as the second connector holder 93 so that the second connector cap 4 can be inserted from the lateral direction. Is done. Since the second cap holder 45 is provided in a fixed state, it does not move.

<Connecting / detaching connector>
Next, an operation when the medical connector is attached / detached using the manual attachment / detachment apparatus described with reference to FIGS. 1 to 5 will be described.

  First, the external appearance image of the manual detaching apparatus is shown in FIGS. The manual detaching apparatus has an upper main body 400 and a lower main body 401, and the mechanism described in FIGS. 1 to 5 is provided therein. The upper body 400 is provided with a rotary knob 402 that can be manually rotated, and is connected to the main disk 50. A configuration in which the main disk 50 itself is exposed to the outside may be adopted. The lower body 401 is configured such that drawers 403 and 404 can be pulled out in the horizontal direction, and a state in which the drawers 403 and 404 are pulled out is shown in FIG.

  The first connector 1 on the patient side covered with the first connector cap 3 is placed on the drawer portion 403, and the second connector 2 on the dialysate side covered with the second connector cap 4 is placed on the drawer portion 404. Placed. The drawer support body 71 described with reference to FIGS. 3 and 4 is fixed to the drawer section 403. By pulling out the drawer section 403, the auxiliary holder 70 is exposed and the first connector 1 can be set. The second connector 2 fitted with the second connector cap 4 can be set in the drawer portion 404. The connectors 1 and 2 may be set in the drawer portions 403 and 404, and the drawer portions 403 and 404 may be slid and closed.

  According to the present invention, the rotating shaft (disk rotating shaft 51) of the rotary knob 402 is set to be vertical, and the operability is improved as compared with the prior art disclosed in Patent Document 1. Since the rotary knob 402 is arranged on the upper surface of the apparatus, the size of the knob can be increased and the operation is facilitated. Furthermore, it becomes possible to increase the rotation radius (the diameter can be further increased than that shown in FIG. 7 and the design is not impaired), and the rotation operation force is reduced, and the patient with weak force. It becomes easy to operate even with.

  Slits 405 are formed in the side surface portions of the upper main body portion 40 and the lower main body portion 401, and the movement of the second connector 2 during insertion of the Y-shaped tube 20 and the rotation of the second connector 2 during Y rotation are performed. The movement of the letter tube 20 is allowed. A slit (not shown) that allows movement of the tube 10 is also provided on the opposite side surface.

  By setting the connectors 1 and 2 and closing the drawers 403 and 404 as described above, the first connector 1 and the first connector cap 3 have the first connector holder 60 and the first cap holder as will be described later. The first connector 1 is rotated by 90 ° with respect to the first connector cap 3 and the coupling is loosened.

  Further, the second connector 2 and the second connector cap 4 are held by the second connector holder 93 and the second cap holder 45. As described above, the second connector 2 and the second connector cap 4 can be separated from each other only by pulling in the axial direction instead of the screw type. No connector rotation mechanism as shown in FIG. After closing the drawers 403 and 404, the rotary knob 402, that is, the main disk 50 is rotated in the direction of arrow A (see FIG. 3).

<Storage operation of drawer part>
First, the operation of the internal mechanism when storing the drawer 403 will be described. As shown in FIG. 6, the drawer portion 403 is opened, the first connector 1 covered with the first connector cap 3 is set in the auxiliary holder 70, and the drawer portion 403 is accommodated.

  Thereby, as shown in FIG. 8, the drawer support 71 slides in the direction of the arrow, and the auxiliary holder 70 is fitted into the slit 61 a of the first connector holder 60. At this time, the guide groove 71 e formed on the back surface of the bottom support plate 71 a moves along the first guide rail 73. The first guide rail 73 is formed with a guide groove 73 a on the back surface side, and is configured to be movable along the second guide rail 74.

  Further, the guide portion 70d provided integrally with the auxiliary holder 70 moves in a state of being fitted in the guide groove 61c formed in the main body portion 61 of the first connector holder 60, and the auxiliary holder 70 and the first connector holder are moved. 60 relative positional relationships are maintained.

  FIG. 9 shows a state in which the auxiliary holder 70 is completely accommodated in the first connector holder 60. When the drawer support 71 is further slid after being accommodated, due to the action of the auxiliary holder connecting member 72, FIG. The auxiliary holder 70 and the first connector holder 60 are rotated around the axis. FIG. 10 shows a state in which the drawer portion 403 is completely stored, and the auxiliary holder 70 and the first connector holder 60 are rotated by 90 ° and stopped. As shown in FIG. 10, the main body 61 is provided with an abutting portion 61 d so that a protrusion 70 a formed on the guide portion 71 d of the auxiliary holder 70 can abut. Therefore, when the drawer portion 403 is opened, the projection portion 70e can be slid to a position where it comes into contact with the contact portion 61d.

  By rotating the first connector holder 60, the first connector 1 is also rotated by 90 °. In the first 45 ° (previous stage), as described with reference to FIG. 1B, in the second region 15b of the cam groove 15 formed in the connector connecting portion 11, the engagement protrusion 31 moves in the circumferential direction. However, it does not act to move the first connector cap 3 in the axial direction.

  When it is rotated beyond the initial 45 ° (the latter stage), the engagement protrusion 31 becomes movable along the cam groove 15 as shown in FIG. Acts in the direction in which the first connector cap 3 is detached. In the process of storing the drawer support 71, the first connector holder 60 only rotates, but when the first connector holder 60 is rotated, the first connector 1 also rotates. A force acts to cause the connector 1 to move away from the first connector cap 3. Therefore, a slight gap G is formed between the first connector 1 and the first connector cap 3 when it is rotated by 90 ° (see FIG. 11). This is caused by the first connector 1 retreating along the axial direction in the first connector holder 60 (auxiliary holder 70).

  In addition, as a structure of this invention, you may employ | adopt the structure that the 1st connector cap 3 advances instead of the 1st connector 1 retreating. As described above, in the process of storing the drawer portion 403, the first connector 1 can be rotated, and preparations for separating the first connector 1 and the first connector cap 3 are made.

  On the other hand, when the second connector 2 is set in the drawer portion 404 with the second connector cap 4 attached thereto and the drawer portion 404 is housed, the second connector 2 is held by the second connector holder 93, and the second connector 2 The cap 4 is held by the second cap holder 45. In this case, it is preferable to use an auxiliary holder as in the case of the first connector 1. A mechanism for rotating the second connector 2 or the second connector cap 4 is not provided on the second connector 2 side.

  When the storage of the drawer 403 is completed, the main disk 50 is rotated. The operation will be described by dividing the operation area of the main disk 50 into the operation areas S1, S2 and S3.

<First operation area S1>
When the main disk 50 starts to rotate, the drum shaft 80 starts to move forward by the action of the cam groove 52 of the cam plate 53 in the first operation region S1. As the drum shaft 80 advances, the drum 90 also advances together. Accordingly, the first cap holder 92 and the second connector holder 93 also move forward. This is shown in FIG. By advancing the first cap holder 92, the first connector cap 3 can be advanced along the axial direction and completely separated from the first connector 1.

  With respect to the second connector 2, the connector connecting portion 21 of the second connector 2 moves forward with respect to the second connector cap 4 in a fixed state, so that both can be separated. The second connector cap 4 is held by the second cap holder 45 so as not to move in the axial direction. Since the engaging claw 41 of the second connector cap 4 can be elastically deformed, the engaging claw 41 is formed in the connector connecting portion 21 by advancing the second connector 2 along the axial direction. The second connector cap 4 can be separated from the second connector 2.

  Since the cam plate 53 rotates together with the rotation of the main disk 50, the partial gear 53a formed on the cam plate 53 is engaged with the second intermediate gear 95 at the end of the first operation region S1.

<Second operation area S2>
When the main disk 50 enters the second operation region S2, the partial gear 53a meshes with the first gear portion 95a of the second intermediate gear 95, so that the rotational force of the main disk 50 causes the second intermediate gear 95 and the first intermediate gear 94 to rotate. Is transmitted to the drive gear 91a. As a result, the drum 90 starts to rotate around the drum shaft 80. This state is shown in FIG. FIG. 13 shows a state in the middle of rotation. Although the 2nd connector 2 rotates with the Y-shaped tube 20, since the slit 405 is formed as demonstrated in FIG. 6, rotation operation can be performed smoothly.

  Further, in the second operation region S2, the cam interlocking portion 83 of the drum shaft 80 moves in the cam groove 52b formed in the arc shape of the cam plate 53, so that the state where the drum shaft 80 does not move forward or backward is maintained. Is done. Accordingly, since the drum 90 does not move in the axial direction, only the rotation operation is performed in the second operation region S2.

  FIG. 14 shows a state in which the drum 90 is rotated by 180 °, that is, a state in which the rotation operation of the drum 90 is completed. In this state, the first connector holder 60 (first connector 1) and the second connector holder 93 (second connector 2) face each other, and the first cap holder 92 (first connector cap 3) and the second cap holder 45 ( The second connector cap 4) is also just facing each other.

<Third operation area>
When entering the third operation region S3, the meshing between the partial gear 53a of the cam plate 53 and the second intermediate gear 95 is released. As a result, the rotational force of the main disk 50 is not transmitted to the drum 90.

  Further, the drum shaft 80 starts to retract due to the action of the cam groove 52 c formed in the cam plate 53. As a result, the second connector holder 93 and the second cap holder 92 are retracted along the axial direction. As the second connector holder 93 moves backward, the second connector 2 moves in the direction of approaching the first connector 1 along the axial direction. On the other hand, when the first cap holder 92 is retracted, the first connector cap 3 moves in the direction approaching the second connector cap 4. FIG. 15 shows a state in which the backward movement operation is completed.

  In FIG. 15, the second connector 2 is inserted into the first connector 1, but since both are connected by a screw type, the connection is not completed (connection preparation state). On the other hand, since the first connector cap 3 and the second connector cap 4 are not screw-type, the connection is completed by inserting the first connector cap 3 into the second connector cap 4.

  That is, when the second connector 2 is inserted into the first connector 1, the engagement protrusion 23 of the second connector 2 is ready to enter along the cam groove 15 formed in the connector connection portion 11 of the first connector 1. Get ready.

<Opening operation of drawer>
When the rotation operation of the main disk 50 is completed, the drawer unit 403 is opened. At this time, an operation opposite to that for housing the drawer portion 403 is performed, and the first connector holder 60 is rotated by 90 ° around the axis. This rotation direction is the opposite direction to that when the drawer 403 is stored.

  When the first connector holder 60 is rotated by 90 °, the first connector 1 is also rotated by 90 °, and the first connector 1 and the second connector 2 are screwed together to complete the connection. At this time, the engagement protrusion 23 of the second connector 2 moves along the cam groove 15, thereby completing the connection between the first connector 1 and the second connector. The state when the drawer 403 is fully opened is shown in FIG.

  As described above, when the first connector 1 and the second connector 2 are connected, the dialysate stored in the abdominal cavity of the patient is discharged into an empty drain bag in this connected state. And the dialysate in a dialysate bag is inject | poured into abdominal cavity by switching a valve not shown.

  Further, the drawer portion 404 (see FIG. 7) is opened, the combined connector caps 3 and 4 are taken out, new connector caps 3 and 4 are inserted, and the drawer portion 404 is closed.

  When the exchange of the dialysate is completed, the drawer 403 is accommodated again, and then the main disk 50 is rotated in the opposite direction. As a result, the operation described above (FIGS. 10 to 16) is followed in the reverse direction to return to the initial set state shown in FIG. At this time, the first connector 1 is covered with a new first connector cap 3, and the second connector 2 is also covered with a new second connector cap 4.

  In this embodiment, the cam groove 52 formed in the cam plate 53 includes cap separating means for separating the first connector 1 and the first connector cap 3 from each other along the axial direction, and the first connector 1 and the second connector 2. And, it functions as a connector proximity means for bringing the first connector cap 3 and the second connector cap 4 close to each other along the axial direction.

  In the present embodiment, the connection gear 53a, the first intermediate gear 94, the second intermediate gear 95, and the drive gear 91a formed on the main disk 53 connect the first connector cap 3 and the second connector 2 around a predetermined axis. It functions as a holder rotating means for rotating.

<Effect>
According to the manual attachment / detachment device of the present invention, the connection between the connector 1 and the first connector cap 3 can be loosened in the step of storing the drawer portion 403. That is, not all operations are performed by operating the main disk 50 (operation unit), but a predetermined operation is performed by the storing step of the drawer unit 403 and the operation of the main disk 50. Therefore, the operation mechanism can be simplified, the amount of operation of the main disk 50 can be reduced, and the operability can be improved. Thereby, an internal mechanism can also be simplified.

  According to the manual attachment / detachment device according to the present invention, the holder 90 supporting the second connector 2 and the first connector cap 3 is rotated so as to face the first connector 1 and the second connector cap 4. It can be configured with a space for two connectors, and has the advantage that the width of the device can be reduced.

  In this embodiment, there are four parts having gears, which can be significantly reduced compared to the prior art described at the beginning, and can contribute to simplification of the mechanism. Also, gear parts and other parts for composing the cam shape can be made of synthetic resin (for example, polyoxymethylene resin (POM) oil bleed grade (high sliding grade)) It can contribute to weight reduction. Moreover, failure and malfunction can be reduced. Also, by using a lot of resin, it becomes easy to clean the apparatus.

<Another embodiment>
Although the operation angle of the main disk 50 has been described as being 160 ° (= 37 ° + 86 ° + 37 °), it is not limited to this, and the operation angle can be appropriately determined in consideration of ease of use. Also, how many times the first, second, and third operation areas S1, S2, and S3 are allocated in the entire operation range can be determined as appropriate.

  In the present embodiment, the first connector cap 3 and the second connector 2 are supported by the holder 90 and rotated, but the first connector 1 and the second connector cap 4 may be rotated. . In this case, when loosening the connection between the first connector 1 and the first connector cap 3, the first connector cap 3 is rotated.

  In this embodiment, the insertion and removal of the first connector 1 is a screw type (rotation operation and linear operation), and the insertion and removal of the second connector cap 4 with respect to the second connector 2 is only a linear operation. As with the connector 1, a screw type may be adopted.

Diagram showing connector configuration Diagram showing connector connection Conceptual diagram showing the internal structure of a manual connector for a medical connector Conceptual diagram showing the internal structure of a manual connector for a medical connector Diagram showing cam groove shape of main disc The figure which shows the appearance image of a manual desorption device Figure showing the image when setting the connector The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining operation of a manual desorption device The figure explaining insertion and removal of the connector concerning a prior art

Explanation of symbols

1 Patient side connector (first connector)
2 Dialysate side connector (second connector)
3 First connector cap 4 Second connector cap 10 Tube 11 Connector connecting portion 15 Cam groove 20 Y-shaped tube 22 Engaging groove 23 Engaging projection 45 Second cap holder 50 Main disk 51 Disk rotating shaft 52 Cam groove 53 Cam plate 53a Partial gear 60 First connector holder 70 Auxiliary holder 71 Drawer support 72 Auxiliary holder connecting member 80 Drum shaft 82 Main body 90 Drum 91 Main body 91a Drive gear 92 First cap holder 93 Second connector holder 94 First intermediate gear 95 First 2 intermediate gear S1 1st operation area S2 2nd operation area S3 3rd operation area

Claims (2)

In order to attach and detach the medical connector composed of the first connector and the second connector,
A first connector holder and a first cap holder capable of holding the first connector and the first connector cap, respectively, with the first connector cap coupled to the first connector by a screw type inserted;
A second connector holder and a second cap holder capable of holding the second connector and the second connector cap, respectively, with the second connector cap inserted into the second connector;
While the first connector holder and the second cap holder are arranged in parallel, the first cap holder and the second connector holder are arranged in parallel,
A manual desorption device for a medical connector provided with an operation unit for operating desorption of the connector,
In order to set the first connector with the first connector cap in the first connector holder, a drawer support that is pulled out of the apparatus main body ,
An auxiliary holder that supports the first connector and is connected to the first connector holder when the drawer support is housed in the apparatus body;
The auxiliary holder is pivotally supported with respect to the drawer support, and the auxiliary holder connected to the first connector holder is rotated together with the first connector holder in conjunction with the process of storing the drawer support in the apparatus main body. Accordingly , the medical device is provided with an auxiliary holder connecting member for rotating the first connector supported by the auxiliary holder around the axis to loosen the connection between the first connector and the first connector cap. Manual connector desorption device. Cap separating means for pulling the first connector and the first connector cap away from each other along the axial direction by advancing the first cap holder in conjunction with the rotational operation of the operation section in the first operation area of the operation section ; ,
In a second operation area following the first operation area, the first connector cap and the second connector arranged in parallel or the first connector and the second connector cap are connected to a predetermined axis in conjunction with the rotation operation of the operation section. A holder rotating means for rotating around the core and moving the first connector and the second connector and the first connector cap and the second connector cap so as to face each other;
In the third operation area following the second operation area , the first connector and the second connector are brought close to each other along the axial direction by retracting the second connector holder in conjunction with the rotation operation of the operation section. 2. The manual connector attaching / detaching device according to claim 1, further comprising a connector proximity means for moving the connector.

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