JP7114512B2 - Pedestal and protective cap assembly - Google Patents

Description

The present invention relates to a pedestal and a protective cap assembly for a protective cap attached to a medical tube connector.

In recent years, peritoneal dialysis has attracted attention because it places less of a burden on patients. Among the peritoneal dialysis methods, peritoneal dialysis is said to facilitate reintegration into society because the patient can replace the dialysate bag by himself/herself at home or at work.

In peritoneal dialysis, a tube connected to the patient side and a tube connected to a dialysate bag are connected via a connector. While the dialysate bag is not connected, temporarily attach a protective cap to the connector of the tubing connected to the patient. To prevent bacterial infection, the protective cap is single-use, disposable.

Such a protective cap is provided as a product attached to a pedestal, removed from the pedestal immediately before use, and attached to the connector for use. Regarding the protective cap and its pedestal, Patent Document 1 discloses that a cylindrical fitting portion is fitted into a concave portion of the protective cap in order to prevent bacteria from falling onto the protective cap from adhering to the protective cap and to allow the patient to easily remove the protective cap from the pedestal. A pedestal is disclosed for mounting and holding the cap. Further, Patent Document 2 discloses a pedestal having a structure in which a protective cap before use is sealed with a plug having a ring-shaped handle.

JP 2017-176358 A JP 2013-42952 A

When connecting the protective cap to the connector, the user holds the connector and its tube with one hand, holds the protective cap with the other hand, and screws the protective cap together. However, with the pedestal of Patent Document 1, when removing the protective cap from the pedestal, it is necessary to place the pedestal in a stable location, and depending on the location, it may be difficult to remove the protective cap from the pedestal.

In addition, the pedestal of Patent Document 2 has a problem that when the ring-shaped handle is put on the finger and used, the pedestal rotates, the position of the protective cap is not stable, and it is difficult to remove the protective cap. be.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pedestal and protective cap assembly from which the protective cap can be easily removed.

One aspect of the present invention is a pedestal for a protective cap attached to a connector that separably connects the middle of a medical tube, comprising: a grip portion that can be attached to a user's finger; a support plate; a fitting portion that protrudes from the support plate and is fitted into the protective cap to hold the protective cap; and a detent protrusion formed to protrude toward the base.

Another aspect of the present invention includes a protective cap attached to a connector that separably connects a medical tube, a grip portion that can be attached to a user's finger, and a support plate that is joined to the grip portion. a fitting portion that protrudes from the support plate and is fitted inside the protective cap to hold the protective cap; The protective cap assembly includes a pedestal having a protruding anti-rotation projection, and the protective cap is fitted to the fitting portion of the pedestal.

According to the pedestal and protective cap assembly of the above aspect, the protective cap can be easily removed from the pedestal.

FIG. 1A shows a state in which the dialysate is retained in the peritoneum, FIG. 1B shows a state in which the dialysate is drained in the peritoneum, and FIG. 1C shows a state in which the dialysate is injected into the peritoneum. , FIG. 1D shows the state during the accumulation of fresh dialysate. FIG. 2A is a perspective view of the catheter and connector after the dialysate bag and the drainage bag have been removed, and FIG. 2B is an explanatory view showing a method of attaching a protective cap to the connector of FIG. 2A. Fig. 2C is a cross-sectional view showing the structure of the protective cap and connector of Figs. 2A and 2B; It is a perspective view which shows the protective cap assembly which concerns on embodiment. FIG. 5 is a perspective view showing the pedestal of FIG. 4; 6A is a front view of the pedestal of FIG. 5, and FIG. 6B is a side view of the pedestal of FIG. 5 is an enlarged cross-sectional view of a fitting portion between the pedestal and the protective cap in FIG. 4; FIG. FIG. 5 is an explanatory view showing a first method of using the protective cap assembly of FIG. 4; FIG. 5 is an explanatory view showing a second method of using the protective cap assembly of FIG. 4;

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In peritoneal dialysis, when a dialysate is injected into the peritoneum of a patient and stored for a predetermined period of time, waste products and water move to the dialysate side through the peritoneum. For a predetermined period of time (eg, 4 to 8 hours) after infusion of dialysate into the body, the patient is free to move, as shown in FIG. 1A. The patient is permanently attached to a catheter 80 inserted into the peritoneum through which the dialysate exchange is performed.

A dialysate exchange is performed as shown in FIGS. 1B and 1C. First, the connection tube 85 to which the drainage bag 90 and dialysate bag 84 are connected is connected to the connector 82 at the tip of the catheter 80 inserted into the patient's peritoneum. The connection tube 85 is branched in the middle, one tube 86 is connected to the dialysate bag 84 , and the other tube 88 is connected to the drainage bag 90 .

As shown in FIG. 1B, the patient closes the clamp on tube 86 and drains the waste-laden dialysate in the patient's peritoneum into drainage bag 90 . The patient then closes tube 88 and opens tube 86 to infuse dialysate from dialysate bag 84 through tube 86 and catheter 80 into the peritoneum, as shown in FIG. 1C.

The patient then removes the connecting tube 85 from the catheter 80 to complete the dialysate exchange, as shown in FIG. 1D. The patient lives with the catheter 80 attached to the body.

As shown in FIG. 2A, the connector 82 at the distal end of the catheter 80 is a male connector in which a screw thread is formed on the outer periphery of a cylindrical connecting portion 82c. Leaving the connector 82 exposed as it is causes complications due to bacterial infection. Therefore, after the dialysate replacement work is completed, the patient holds the connector 82 at the tip of the catheter 80 with one hand and holds the protective cap 12 with the other hand to protect the connector 82, as shown in FIG. 2B. The cap 12 is screwed in to protect the connector 82. - 特許庁From the viewpoint of preventing infectious diseases, the protective cap 12 is disposable. In addition, the protective cap 12 is attached so that the inner side of the protective cap 12 does not face upward in order to prevent adhesion of falling germs.

As shown in FIG. 3, the protective cap 12 has a double structure so that the patient's fingers do not touch the portion communicating with the catheter 80 (the inside of the inner tubular portion 12b). That is, it has a structure in which a short inner cylindrical portion 12b is formed inside an outer cylindrical portion 12a formed in a cylindrical shape with a bottom. A first threaded structure 12c (thread) is formed on the inner side of the outer cylindrical portion 12a, and the first threaded structure 12c is screwed with the second threaded structure 82e of the connector 82. As shown in FIG. A circular ring-shaped packing 12d is fitted on the inner side of the inner cylindrical portion 12b. A porous member containing a disinfectant such as povidone-iodine may be attached to the ring-shaped groove 12e between the outer cylinder part 12a and the inner cylinder part 12b.

The connector 82 includes a catheter fixing portion 82a to which the catheter 80 is connected, a flange portion 82b formed on the distal end side of the catheter fixing portion 82a, and a connecting portion 82c formed on the distal end side of the flange portion 82b. The flange portion 82b is formed with a larger diameter than the catheter fixing portion 82a and the connecting portion 82c. The connection portion 82c extends cylindrically from the flange portion 82b toward the distal end side. A second screw structure 82e is formed on the outer side of the connecting portion 82c. The second threaded structure 82e is formed to be screwed with the first threaded structure 12c of the outer cylindrical portion 12a. Inside the connecting portion 82c, an inner connecting portion 82d to be inserted into the inner cylindrical portion 12b is formed to extend in a cylindrical shape toward the tip. A communication hole 82f communicating with the inside of the catheter 80 is formed inside the inner connecting portion 82d.

The protective cap 12 is attached so that the outer cylindrical portion 12a covers the outside of the connecting portion 82c, and the outer cylindrical portion 12a abuts against a ring-shaped packing 83a provided at the base of the connecting portion 82c. As a result, the connection portion 82c is airtightly sealed inside the protective cap 12 . In addition, the communication hole 82f is airtightly sealed by the inner connecting portion 82d coming into close contact with the packing 12d of the inner cylindrical portion 12b. In this way, protective cap 12 protects connector 82 with a double sealing structure.

By the way, in this embodiment, the protective cap 12 is provided as a product as a protective cap assembly 10 according to this embodiment shown in FIG. The protective cap assembly 10 includes a protective cap 12 and a pedestal 14 assembled to cover the opening of the protective cap 12. - 特許庁The pedestal 14 is configured to keep the inside of the protective cap 12 sterile by closing the inside of the protective cap 12 until just before use.

As shown in FIG. 5, the pedestal 14 includes a ring-shaped gripping portion 16, a support plate 18 formed at one end of the gripping portion 16, and a rotation stop projection 20 extending outward from the gripping portion 16. , 22 . As shown in FIG. 6A, the grip portion 16 is formed in a circular ring shape when viewed from the front in the X direction. The grip portion 16 is formed so that its inner diameter φ1 (see FIG. 6A) is slightly larger than the thumb so that it can be worn on the fingers of the patient's hand. The inner diameter φ1 of the grip portion 16 can be set to, for example, about 20 to 30 mm. Further, the width W of the grip portion 16 shown in FIG. 6B in the X direction can be set to, for example, about 5 mm.

The grip part 16 may have any shape as long as it can be worn on the fingers of the patient's hand. Shapes such as a square ring and a partially cut C-shape are also included.

As shown in FIG. 5, the support plate 18 is formed in a disc shape when viewed from above in the Z direction. The support plate 18 and the grip portion 16 are integrally formed. An outer surface 18 a of the support plate 18 is formed in a direction parallel to a tangent line between the support plate 18 and the grip portion 16 . The diameter D2 of the support plate 18 shown in FIG. 6A is approximately the same as or larger than the outer diameter of the outer cylindrical portion 12a (see FIG. 4) of the protective cap 12 so as to seal the opening of the protective cap 12. formed. The diameter D2 of the support plate 18 can be, for example, approximately 20 to 25 mm.

As shown in FIG. 5, from the outer surface 18a of the support plate 18, an annular fitting portion 24 is formed so as to protrude in the Z direction perpendicular to the outer surface 18a. The fitting portion 24 is formed in a polygonal shape (for example, a hexagonal shape or an octagonal shape) in plan view. The fitting portion 24 has an outer diameter dimension approximately equal to the inner diameter of the outer cylindrical portion 12a of the protective cap 12, and is configured to hold the protective cap 12 by being fitted inside the outer cylindrical portion 12a. It is A protrusion height H1 of the fitting portion 24 shown in FIG. 6B can be set to, for example, about 2 to 3 mm.

From the upper end 24a of the fitting portion 24, release projections 26 and 28 are formed to protrude in a direction (Z direction) perpendicular to the outer surface 18a. As shown in FIGS. 5 and 6A , the release projections 26 and 28 are spaced apart in the circumferential direction of the fitting portion 24 and arranged to face each other with the center axis Z of the fitting portion 24 interposed therebetween. Here, the first thread structure 12c of the protective cap 12 is configured as a double thread, and the release projections 26, 28 are provided corresponding to the two threads of the first thread structure 12c.

The upper end surfaces 26a, 28a of the release projections 26, 28 are inclined surfaces 30 to 40 degrees with respect to the outer surface 18a corresponding to the first screw structure 12c. Also, the projection height H2 (the height from the outer surface 18a) of the release projections 26 and 28 shown in FIG. 6B can be set to, for example, about 4 to 5 mm.

As shown in FIG. 7, in the protective cap assembly 10 in which the protective cap 12 is attached to the pedestal 14, the release projection 26 (28) is arranged near the first screw structure 12c. The upper end surfaces 26a, 28a of the release projections 26, 28 extend to the vicinity of the threads of the first threaded structure 12c of the protective cap 12. As shown in FIG.

In this state, the releasing projections 26, 28 are not in contact with the first threaded structure 12c. abuts. The protective cap 12 is displaced in the direction away from the support plate 18 by the first screw structure 12c riding on the release projections 26, 28. As shown in FIG.

The amount of displacement H3 of the protective cap 12 by the release projections 26, 28 shown in FIG. Equivalent to difference. It is preferable to set the positions and heights of the release protrusions 26 and 28 so that the displacement amount H3 of the protective cap 12 is half or more of the protrusion height H1 of the fitting portion 24 .

As shown in FIG. 5, the anti-rotation protrusions 20 and 22 are formed so as to extend outward from the grip portion 16, and when the grip portion 16 is put on the finger, they contact other parts of the hand, It is configured to restrict the rotation of the grip portion 16 .

As shown in FIG. 6A , the anti-rotation projections 20 and 22 are formed with a predetermined interval in the circumferential direction of the grip portion 16 with respect to the support plate 18 . In this case, when a finger is inserted into the ring-shaped gripping portion 16, the rotation-stopping projections 20 and 22 do not come into contact with the adjacent fingers so that the gripping portion 16 can be held stably. , 22 are preferably spaced apart from the central portion of the support plate 18 by 90° or more in the circumferential direction of the grip portion 16 . Further, the anti-rotation projections 20 and 22 are located at the center of the support plate 18 so that the anti-rotation projections 20 and 22 abut on the same position of the hand regardless of which direction fingers are inserted into the grip portion 16. It is preferable that they are formed in symmetrical positions about the Z axis.

The anti-rotation protrusions 20 and 22 are formed as planes parallel to the central axis X of the grip portion 16 and are joined to the grip portion 16 via reinforcing portions 30 and 32 integrally extending from the grip portion 16. It is Also, the rotation stop protrusions 20 and 22 are preferably shaped without sharp protrusions so as not to cause discomfort to the user. can do. The diameters of the anti-rotation protrusions 20 and 22 can be appropriately set within a range that does not interfere when the grip portion 16 is put on the finger. Although not particularly limited, the diameter D1 (see FIG. 6A) of the anti-rotation protrusions 20 and 22 can be set to, for example, about 10 to 15 mm.

The angle between the main surface 20a of the rotation-stopping projection 20 and the main surface 22a of the rotation-stopping projection 22 and the central axis Z of the support plate 18 can be, for example, about 105°. Also, the angle formed by the main surface 20a of the rotation-stopping projection 20 and the main surface 22a of the rotation-stopping projection 22 can be, for example, about 150°.

The pedestal 14 is not limited to having the two anti-rotation projections 20 and 22, and may be configured with only one of the anti-rotation projections 20 and 22 or three or more.

The pedestal 14 is not particularly limited, but can be integrally formed using thermoplastic synthetic resins such as polypropylene, polyethylene, polyacetal, ABS, and TPU.

The protective cap assembly 10 is assembled by pushing the outer cylindrical portion 12 a of the protective cap 12 into the fitting portion 24 of the support plate 18 of the base 14 . In the protective cap assembly 10, the fitting portion 24 is fitted inside the outer cylindrical portion 12a, and the protective cap 12 is fixed to the pedestal 14 by the frictional force between the fitting portion 24 and the outer cylindrical portion 12a. there is The support plate 18 of the pedestal 14 closes the opening of the protective cap 12 by being in close contact with the end portion 12f of the protective cap 12 .

The pedestal 14 and protective cap assembly 10 of the present embodiment are constructed as described above, and the operation thereof will be described below along with the method of use.

As shown in FIG. 8, in the first method of use, the patient first attaches the grip portion 16 of the protective cap assembly 10 to the fingers of one hand. In the illustrated example, the protective cap assembly 10 is attached to the thumb, but it can also be attached to fingers other than the thumb.

The patient then holds the catheter 80 and connector 82 to which the protective cap 12 is to be attached with the hand on which the protective cap assembly 10 is attached. Thereafter, the protective cap 12 can be attached by pulling the protective cap 12 out of the protective cap assembly 10 with the other hand and screwing the protective cap 12 onto the connector 82 .

In the protection cap assembly 10 of this embodiment, as shown in the figure, the rotation stop projection 20 is hooked on the palm of the hand to prevent the protection cap assembly 10 from rotating. As a result, even patients with hand disabilities such as the elderly can easily grasp the protective cap 12 .

In addition, since the protective cap assembly 10 is provided with the anti-rotation projections 20 and 22, the anti-rotation projection 20 or the anti-rotation projection 22 is positioned so that it catches on the palm of the hand regardless of which direction the finger is inserted into the grip portion 16. is located, and the rotation of the protective cap assembly 10 can be prevented more reliably.

In addition, with the conventional pedestal, the only way to disengage the protective cap 12 is to pull out the protective cap 12. Since it is difficult to remove the protective cap 12 from the pedestal, the force of pulling the protective cap 12 separates it from the hand. There was a time when I flew away. In contrast, the pedestal 14 of the present embodiment includes release protrusions 26 and 28 .

That is, as shown in FIG. 7, when the protective cap 12 is rotated, the thread of the first screw structure 12c slides over the release protrusions 26 and 28, thereby sliding the protective cap 12 into the fitting portion 24. As shown in FIG. is displaced in the direction away from Therefore, the removal of the protective cap 12 can be performed by a screwing operation in addition to the conventional pulling operation. As a result, even patients with hand disabilities such as the elderly can remove the protective cap 12 without dropping it.

In a second method of use, the patient first holds catheter 80 and connector 82 in one hand, as shown in FIG. After that, the patient holds the protective cap assembly 10 and holds the grip portion 16 of the protective cap assembly 10 between the middle finger and the ring finger or the like. In this case as well, the base 14 can be stably held by the anti-rotation protrusions 20 and 22 coming into contact with the palms and fingertips.

Thereafter, the protective cap 12 can be attached by removing the protective cap 12 from the base 14 of the protective cap assembly 10 with the other hand and screwing the protective cap 12 onto the connector 82 . Thus, in the second method of use, even if, after holding the catheter 80 and connector 82 in your hand, you realize that you have forgotten to attach the ring-shaped gripping portion 16 to your fingertip, you will still be protected. Cap 12 can be easily removed.

The pedestal 14 and protective cap assembly 10 of this embodiment have the following effects.

The pedestal 14 of the protective cap 12 attached to the connector 82 that separably connects the middle of the catheter 80 (medical tube), the grip portion 16 that can be attached to the user's finger, and the grip portion 16 that is joined to the grip portion 16 a support plate 18 protruding from the support plate 18, a fitting portion 24 fitted inside the protection cap 12 to hold the protection cap 12, and a grip portion spaced from the support plate 18 in the circumferential direction of the grip portion 16. anti-rotation projections 20, 22 formed projecting outwardly from 16; With this configuration, when the base 14 is inserted into the finger, the base 14 can be prevented from rotating, and even a patient who feels discomfort in the fingertip can easily grasp the protective cap 12 and remove it. be able to. In addition, in the base 14 described above, the grip portion 16 may be formed in a ring shape.

In the pedestal 14 described above, a plurality of anti-rotation projections 20 and 22 may be provided spaced apart in the circumferential direction of the grip portion 16 . Accordingly, the rotation of the grip portion 16 can be restricted regardless of which direction fingers are inserted into the grip portion 16 . Therefore, there is no need for a troublesome operation such as re-inserting the grip portion 16 into the finger after noticing an error in the insertion direction.

In the pedestal 14 described above, the anti-rotation protrusions 20 and 22 may be separated from the central portion of the support plate 18 by 90° or more in the circumferential direction of the grip portion 16 . By configuring in this way, it is possible to prevent the anti-rotation projections 20 and 22 from coming into contact with adjacent fingers, and it is possible to hold the pedestal 14 in a more stable state.

In the pedestal 14 described above, the anti-rotation protrusions 20 and 22 may be formed in a plate shape parallel to the central axis X direction of the grip portion 16 . By configuring in this way, it becomes possible to hold the pedestal 14 in a more stable state.

In the base 14 described above, the anti-rotation protrusions 20 and 22 may be provided as a pair on the grip portion 16 and symmetrically on both sides of the support plate 18 . As a result, the anti-rotation protrusions 20 and 22 abut on the same position regardless of which direction fingers are inserted into the grip portion 16, and the base 14 can be held in a more stable state.

In the pedestal 14 described above, the anti-rotation projections 20, 22 may be inclined with respect to the normal direction of the grip portion 16 where the anti-rotation projections 20, 22 are provided. As a result, regardless of the diameter of the grip portion 16, the anti-rotation projections 20, 22 can be inclined at an angle that facilitates contact with the patient's hand.

In the pedestal 14 described above, the support plate 18 and the anti-rotation projections 20 and 22 may be disk-shaped, and the diameter of the anti-rotation projections 20 and 22 may be smaller than the diameter of the support plate 18 . As a result, the anti-rotation protrusions 20 and 22 do not interfere with holding by hand, and the pedestal 14 can be held in a more stable state.

In the pedestal 14 described above, the axial dimension of the grip portion 16 of the anti-rotation protrusions 20 and 22 may be larger than the axial width W of the grip portion 16 . This increases the axial stability of the grip portion 16 of the pedestal 14 and facilitates the holding of the pedestal 14 .

The protective cap assembly 10 of this embodiment includes a protective cap 12 attached to a connector 82 that separably connects the middle of a catheter 80 (medical tube), a grip portion 16 attachable to a user's finger, A support plate 18 joined to the grip portion 16, a fitting portion 24 projecting from the support plate 18 and fitted inside the protection cap 12 to hold the protection cap 12, and a circumferential direction from the support plate 18 to the grip portion 16. a pedestal 14 having a detent projection 22 protruding outwardly from the grip portion 16 with a space therebetween. With this configuration, when the base 14 is inserted into the finger, the base 14 can be prevented from rotating, and even a patient who feels discomfort in the fingertip can easily grasp the protective cap 12 and remove it. be able to.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention. stomach.

DESCRIPTION OF SYMBOLS 10... Protective cap assembly 12... Protective cap 14... Base 16... Grasping part 18... Supporting plate 20, 22... Rotation stop protrusion 24... Fitting part 26, 28... Release protrusion 80... Catheter 82... Connector

Claims (10)

A pedestal for a protective cap attached to a connector that separably connects the middle of a medical tube,
a grip that can be worn on a user's finger;
a support plate joined to the grip;
a fitting portion that protrudes from the support plate and is fitted inside the protective cap to hold the protective cap;
a rotation-stopping projection formed to protrude outward from the gripping portion at a distance from the support plate in the circumferential direction of the gripping portion;
pedestal. 2. The pedestal according to claim 1, wherein said gripping portion is formed in a ring shape. 3. The pedestal according to claim 2, wherein a plurality of said anti-rotation projections are provided at intervals in the circumferential direction of said grip portion. 4. The pedestal according to claim 2, wherein said anti-rotation projection is spaced apart from the center of said support plate by 90 degrees or more in the circumferential direction of said grip portion. The pedestal according to any one of claims 1 to 4, wherein the anti-rotation projection is formed in a plate shape parallel to the central axis direction of the grip portion. The pedestal according to any one of claims 1 to 5, wherein a pair of said anti-rotation protrusions are provided on said gripping portion and symmetrically provided on both sides of said support plate. The pedestal according to any one of claims 1 to 6, wherein the rotation-stopping projection is inclined with respect to the normal direction of the grip portion at the portion where the rotation-stopping projection is provided, pedestal. 6. The pedestal according to claim 5, wherein said support plate and said anti-rotation projection are disc-shaped, and the diameter of said anti-rotation projection is smaller than the diameter of said support plate. The pedestal according to any one of claims 1 to 8, wherein the axial dimension of the gripping portion of the anti-rotation projection is larger than the width of the gripping portion in the central axis direction. a protective cap attached to a connector that separably connects the middle of a medical tube;
a grip portion that can be worn on a user's finger; a support plate that is joined to the grip portion; a fitting portion that protrudes from the support plate and is fitted inside the protective cap to hold the protective cap; a pedestal having a rotation-stopping projection spaced apart from the support plate in the circumferential direction of the gripping portion and protruding outward from the gripping portion;
wherein the protective cap is fitted to the fitting portion of the pedestal,
Protective cap assembly.

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