JP7565225B2 - Filling container - Google Patents

Description

The present invention relates to a filling container that can fill a medical tube with a fluid.

Some medical tubing such as catheters are equipped with a flush needle to remove air from within the lumen. The flush needle is used, for example, when inserting the medical tubing into a living body, to fill the lumen with heparinized saline to prevent the lumen from becoming blocked due to blood clotting that has backflowed into the lumen, a process known as heparin lock.

An example of a medical flash needle is shown in Patent Document 1.

Special table 2013-508038 publication

Since flush needles have metal needles, they must be separated when disposing of medical tubing, which is time-consuming. In addition, flush needles are made of metal and are hard, so there is a risk that they may deform the tip of the catheter.

The present invention has been made to solve the above-mentioned problems, and aims to provide a filling container that can fill the lumen of a medical tubing with a fluid without using a metal needle.

The filling container according to the present invention, which achieves the above object, is a filling container for filling a liquid into a lumen of a medical tubular body having a lumen along a longitudinal direction and a distal tip that opens at a distal end,
a liquid holding portion that can be deformed by pressure to reduce its internal volume;
a tip tube communicating with the liquid holding portion;
The distal tube can communicate with the lumen via the distal tip ,
an injection port communicating with the liquid holding portion and a lid member covering the injection port;
The tip tube is provided on the cover member and protrudes inward from a tip surface of the cover member .

The filling container constructed as described above can eject liquid from the distal tube into the lumen by pressing the liquid holding portion, eliminating the need for metal needles, syringes, etc., making disposal easy and reducing the possibility of deforming the distal tip with a needle. In addition, it is easy to inject liquid into the liquid holding portion, and after the liquid is injected into the liquid holding portion, a lid member can be attached to eject the liquid, improving work efficiency.

The distal tube may have an inner diameter that allows at least the distal end to insert the distal tip. This allows the distal tip to be inserted into the distal tube and allows for easy filling with liquid.

The distal tube may also have an inner tapered portion in which the inner diameter of at least the distal end decreases from the distal end toward the proximal end. This makes it easier to insert the distal tip into the distal tube.

The liquid holding portion may be designed to deform when pressed with a finger. This allows the liquid to be easily ejected.

1 is an overall front view of a filling container of the present embodiment and a catheter to be filled with liquid by the filling container. FIG. FIG. 2 is a cross-sectional view of a filling container. 1 is an enlarged cross-sectional view of the vicinity of the tip tube with the closing portion separated from the filling container. FIG. FIG. 13 is a partially enlarged cross-sectional view showing the distal tube inserted into the distal tip of the catheter. FIG. 2 is a front view of the refill container being pressed by a finger. FIG. 11 is a front view of a filling container according to a first modified example. 13 is a front view of a filling container according to a first modified example in a state in which the lid member is separated from the liquid holding portion. FIG. FIG. 13 is a front view of a filling container according to a second modified example into which a distal tip of a catheter is inserted. 13 is an enlarged cross-sectional view of the vicinity of the lid member of a filling container according to a second modified example into which a distal tip of a catheter is inserted. FIG. FIG. 11 is a front view of a filling container according to a third modified example.

The following describes an embodiment of the present invention with reference to the drawings. Note that the dimensional ratios in the drawings may be exaggerated for the sake of explanation and may differ from the actual ratios.

The filling container according to an embodiment of the present invention is capable of injecting liquid into a catheter 100, which is a medical tubular body. In this specification, the side of the catheter 100 that is inserted into a biological lumen is referred to as the "tip" or "tip side", and the side of the catheter 100 that is operated by the operator is referred to as the "base end" or "base side". Similarly, in this specification, the side where liquid is injected from the filling container 10 is referred to as the "tip" or "tip side", and the side of the liquid holding section 20 of the filling container 10 is referred to as the "base end" or "base side".

As shown in FIG. 1, the catheter 100 has a long shaft portion 101, a balloon 102 at the tip of the shaft portion 101, and a hub 103 at the base end of the shaft portion 101. A tip tip 110 is provided on the tip side of the balloon 102. The tip of the tip tip 110 is open. The shaft portion 101 is a so-called rapid exchange type catheter having an intermediate opening 112 in the middle of the length direction. The shaft portion 101 has a lumen 111 that communicates from the intermediate opening 112 to the tip of the tip tip 110. The filling container 10 is filled with saline or heparinized saline, and saline or the like can be injected into the lumen 111 from the tip tip 110 to fill it. In addition to balloon catheters, the catheter may be a stent delivery catheter, a diagnostic imaging catheter, an atherectomy catheter, or an over-the-wire catheter, but rapid exchange catheters, which are widely used as medical tubing and cannot be injected from the hub side, are preferred.

As shown in FIG. 2, the filling container 10 has a liquid holding portion 20 capable of storing saline therein, and a tip tube 22 that communicates with the liquid holding portion 20. A removable lid member 24 is attached to the liquid holding portion 20. The filling container 10 is formed from a resin material such as a polyolefin resin, such as polyethylene or polypropylene, or a silicone resin. In particular, the liquid holding portion 20 is formed from a material that is soft and flexible enough to be pressed with a finger. Therefore, the liquid holding portion 20 can be deformed and its internal volume reduced by pressing it with a finger.

As shown in FIG. 3, the liquid holding portion 20 is hollow inside. The tip tube 22 has an outer tapered portion 23 that communicates with the liquid holding portion 20 and has an outer diameter that decreases from the base end side to the tip end side. The tip of the tip tube 22 has a blocked occlusion portion 31. As shown in FIG. 4, by cutting the liquid holding portion 20 side from the occlusion portion 31, a discharge port 30 that opens into the tip tube 22 is formed, and the physiological saline in the liquid holding portion 20 can be discharged from the discharge port 30. Alternatively, the tip of the tip tube 22 may not have a blocked portion 31, and the discharge port 30 may be provided in advance.

In this embodiment, the catheter 100 is configured so that a guidewire having a diameter of 0.36 mm can be inserted into the lumen 111. Therefore, the inner diameter of the lumen 111 is approximately 0.45 mm. The outer diameter of the tip tube 22, which has an outer tapered portion 23, is typically 0.4 mm. The inner diameter of the tip tube 22 is 0.2 mm. The liquid holding portion 20 has a capacity to store 1 to 2 ml of physiological saline. However, the outer diameter, inner diameter, and volume of the tip tube 22 can be set arbitrarily depending on the dimensions of the catheter 100 to be inserted, and are not limited to this.

A hollow protrusion 33 that communicates with the liquid holding portion 20 is formed on the side of the liquid holding portion 20 opposite the tip tube 22. The tip of the protrusion 33 opens as an inlet 32. The inlet 32 has an inner diameter larger than the outlet 30 formed in the tip tube 22. In addition, a threaded portion 34 is formed on the outer circumferential surface of the protrusion 33, into which the lid member 24 is screwed.

Next, a method of using the filling container 10 will be described. Before use, saline is injected into the filling container 10. To this end, the lid member 24 is first removed to expose the injection port 32. Next, the liquid holding portion 20 is pressed with fingers from both sides to be in a crushed state, and the injection port 32 is immersed in saline. By releasing the pressure on the liquid holding portion 20 from this point, the liquid holding portion 20 returns to its original shape and aspirates saline from the injection port 32. This allows the liquid holding portion 20 to be filled with saline. After the liquid holding portion 20 is filled with saline, air bubbles are removed, and the lid member 24 is attached to the screw portion 34 to close the injection port 32. In addition, the liquid holding portion 20 side is cut from the blocking portion 31 of the tip tube 22 to form the discharge port 30 in the tip tube 22. Alternatively, injection may be performed using a syringe.

As shown in FIG. 5, the distal tube 22 is inserted into the lumen 111 of the catheter 100 from the distal end of the distal tip 110. The distal tube 22 can be smoothly inserted into the lumen 111 due to the outer tapered portion 23.

As shown in FIG. 6, by pressing the liquid holding portion 20 from both sides with fingers, the liquid holding portion 20 is crushed, reducing its internal volume, and the saline solution S inside is ejected from the outlet 30 of the distal tube 22. With the distal tube 22 inserted into the lumen 111 from the distal tip 110, the saline solution can be filled into the lumen 111 by pressing the liquid holding portion 20 with fingers.

In this way, the liquid holding portion 20, which can be deformed by pressure to reduce its internal volume, is connected to the distal tube 22, and the distal tube 22 can be connected to the lumen 111 via the distal tip 110, so that the lumen 111 can be easily flushed from the distal end. In addition, since the filling container 10 does not require a metal needle, it is easy to dispose of and the possibility of deforming the distal tip 110 can be reduced.

The tip tube 22 can be made of a hard material and used to shape the tip of the guidewire.

Next, the filling container 11 according to the first modified example will be described. As shown in FIG. 7, the filling container 11 is formed by attaching a lid member 44 to a liquid holding portion 40. The lid member 44 has a tip tube 42. The tip tube 42 is formed with an outer tapered portion 43, and a discharge port 50 is formed at the tip.

As shown in FIG. 8, a protrusion 53 is formed in one direction from the liquid holding portion 40. The protrusion 53 has a threaded portion 54 on its outer circumferential surface, and the lid member 44 can be screwed and fixed. An injection port 52 that communicates with the liquid holding portion 40 is formed at the tip of the protrusion 53. The injection port 52 has an inner diameter larger than the discharge port 50 of the tip tube 42.

Before use, the filling container 11 is in a state where the liquid holding portion 40 and the lid member 44 are separated. When using the filling container 11, the liquid holding portion 40 is crushed with a finger, the inlet 52 is immersed in saline, and the liquid holding portion 40 is returned to its original state to aspirate saline from the inlet 52. Note that the filling container 11 may be in a state where the lid member 44 is attached to the liquid holding portion 40 before use. In this case, the lid member 44 is removed from the liquid holding portion 40 before aspirating saline. After the liquid holding portion 40 is filled with saline, the lid member 44 is attached to the liquid holding portion 40. Then, the distal end tube 42 is inserted into the lumen 111 from the distal end tip 110 of the catheter 100, and the liquid holding portion 40 is pressed with a finger to cause saline to be ejected from the discharge port 50 into the lumen.

The tip of the protrusion 53 is tapered toward the tip. This part can be fitted into the hub 103 of the catheter 100 to spray saline from the liquid holding portion 40, and can be used to prime the catheter 100.

Next, a filling container 12 according to a second modified example will be described. As shown in FIG. 9, the filling container 12 is formed by attaching a lid member 64 to a liquid holding portion 60. The lid member 64 has a distal end tube 62 therein, and the distal end tip 110 of the catheter 100 can be inserted into the lid member 64.

As shown in FIG. 10, the liquid holding portion 60 has a protrusion 73 at its tip. The protrusion 73 has a threaded portion 74 on its outer circumferential surface, and the lid member 64 can be screwed and fixed. The tip of the protrusion 73 is an inlet 72 that communicates with the liquid holding portion 60.

The lid member 64 has a tip tube 62 that protrudes inward from the tip surface. The tip tube 62 has an inner diameter that allows the tip tip 110 to be inserted, and has a discharge port 70 at the tip. The tip tube 62 also has an inner tapered section 63 whose inner diameter decreases from the tip side to the base end side. Furthermore, by fixing the lid member 64 to the liquid holding section 60, the tip tube 62 is pressed against the tip of the protruding section 73 and the protruding section inner surface 75 of the protruding section 73, thereby increasing the liquid-tightness of the liquid holding section 60.

Before use, the filling container 12 is in a state where the liquid holding portion 60 and the lid member 64 are separated. When using the filling container 12, the liquid holding portion 60 is crushed with a finger, the inlet 72 is immersed in saline, and the liquid holding portion 60 is returned to its original state to aspirate saline from the inlet 72. Note that the filling container 12 may be in a state where the lid member 64 is attached to the liquid holding portion 60 before use. In this case, the lid member 64 is removed from the liquid holding portion 60 before aspirating saline. After the liquid holding portion 60 is filled with saline, the lid member 64 is attached to the liquid holding portion 60. Then, the distal tip 110 of the catheter 100 is inserted into the distal tube 62 of the lid member 64. This allows the distal tube 62 to communicate with the lumen 111. In this state, the liquid holding portion 60 is pressed with a finger to eject saline from the discharge port 70 into the lumen.

Next, a filling container 13 according to a third modified example will be described. As shown in FIG. 11, the filling container 13 has a liquid holding portion 80 having an expandable portion 81, and a tip tube 82 communicating with the liquid holding portion 80 is provided on the opposite side to the expandable portion 81. An outlet 83 is formed at the tip of the tip tube 82.

By manually pressing and compressing the expandable portion 81, the internal volume of the liquid holding portion 80 changes, and the saline solution stored in the liquid holding portion 80 can be ejected from the discharge port 83. In addition, by compressing and returning the expandable portion 81 while the discharge port 83 is immersed in saline solution, saline solution can be sucked from the discharge port 83. In addition, a separate injection port may be provided in the liquid holding portion 80.

As described above, the filling container 10 according to this embodiment is a filling container 10 that fills the lumen 111 of the medical tubular body 100 with liquid, which has a lumen 111 along the length direction and a distal tip 110 that opens to the distal end, and has a liquid holding portion 20 that can be deformed by pressure to reduce its internal volume, and a distal tube 22 that communicates with the liquid holding portion 20, and the distal tube 22 can communicate with the lumen 111 via the distal tip 110. The filling container 20 configured in this manner can eject liquid from the distal tube 22 into the lumen 111 by pressing the liquid holding portion 20, eliminating the need for metal needles or syringes, making it easy to dispose of and reducing the possibility of deforming the distal tip 110 with a needle.

The distal tube 22 may have an outer diameter that allows at least the distal end to be inserted into the lumen 111. This allows the distal tube 22 to be inserted into the distal tip 110 and easily filled with liquid.

The distal tube 22 may have an outer tapered portion 23 in which the outer diameter of at least the distal end decreases from the base end toward the distal end. This makes it easier to insert the distal tube 22 into the distal tip 110.

The distal tube 62 may have an inner diameter that allows at least the distal end to insert the distal tip 110. This allows the distal tip 110 to be inserted into the distal tube 62 to easily fill with liquid.

The distal tube 62 may have an inner tapered section 63 in which the inner diameter of at least the distal end decreases from the base end to the distal end. This makes it easier to insert the distal tip 110 into the distal tube 62.

It may have an inlet 32 that communicates with the liquid holding portion 20, and the inlet 32 may have an inner diameter larger than the inner diameter at which the tip tube 22 communicates with the lumen 111. This makes it easier to inject liquid into the liquid holding portion 20.

It may have a lid member 64 that covers the inlet 72, and a tip tube 62 may be attached to the lid member 64. This allows the liquid to be sprayed after the liquid is injected into the liquid holding portion 60 by attaching the lid member 64, improving work efficiency.

The tip of the tip tube 22 may be closed, and the liquid holding portion 20 side of the tip may be cut off. This allows the liquid to be reliably injected into the liquid holding portion 20.

The liquid holding portion 20 may be designed to deform when pressed with a finger. This allows the liquid to be easily ejected.

The present invention is not limited to the above-described embodiment, and various modifications can be made by those skilled in the art within the technical concept of the present invention. In the above-described embodiment, the liquid sucked into the liquid holding portion 20 and ejected is saline, but other liquids may also be used.

In addition, in the above-described embodiment, the catheter 100 using the filling container 10 has an intermediate opening 112, but the lumen 111 may also be connected to the hub 103.

In addition, in all of the above-mentioned embodiments, saline is aspirated and then sprayed into the lumen 111, but saline may be pre-filled in the liquid holding portion 20.

Alternatively, the liquid holding portion 60 may be filled with saline solution in advance, the discharge port 70 may be welded closed, and the device may be sterilized in a sealed state, and the tip tube 62 attached to the lid member 64 may be used to pierce the closed discharge port so that the saline solution can be discharged.

10 Filling container 11 Filling container 12 Filling container 13 Filling container 20 Liquid holding portion 22 Tip tube 23 Outer tapered portion 24 Lid member 30 Discharge port 31 Blocking portion 32 Inlet 33 Protruding portion 34 Threaded portion 40 Liquid holding portion 42 Tip tube 43 Outer tapered portion 44 Lid member 50 Discharge port 52 Inlet 53 Protruding portion 54 Threaded portion 60 Liquid holding portion 62 Tip tube 63 Inner tapered portion 64 Lid member 70 Discharge port 72 Inlet 73 Protruding portion 74 Threaded portion 75 Inner surface of protruding portion 80 Liquid holding portion 81 Expandable portion 82 Tip tube 83 Discharge port 100 Catheter 101 Shaft portion 102 Balloon 103 Hub 110 Tip tip 111 Lumen 112 Middle opening

Claims (4)

A filling container for filling a liquid into a lumen of a medical tubular body having a lumen along a length direction and a tip end tip opening at a tip end,
a liquid holding portion that can be deformed by pressure to reduce its internal volume;
a tip tube communicating with the liquid holding portion;
The distal tube can communicate with the lumen via the distal tip ,
an injection port communicating with the liquid holding portion and a lid member covering the injection port;
A filling container , wherein the tip tube is provided on the lid member and protrudes inward from a tip surface of the lid member . 2. The filling container according to claim 1, wherein the distal end tube has an inner diameter that allows at least the distal end portion of the distal end tube to receive the distal tip. 3. The filling container according to claim 2 , wherein the tip tube has an inner tapered portion at least at the tip end of the tip tube , the inner diameter of which decreases from the tip end side to the base end side of the tip tube . 4. The filling container according to claim 1, wherein the liquid holding portion is deformed by pressure applied by a finger.

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