Medical Instrument Caps

Abstract

A cap for a medical instrument is provided that can improve sealing performance. [Solution] In a medical device cap (20) having a connection plug main body and a lid (22), the connection plug main body has an expanded diameter section (30) where a circular conduit (19) expands towards an opening end (25), and the lid (22) is provided with a protruding seal section (36) having a circular outer peripheral shape, and the seal section (36) has an end section (36a) formed around the entire circumference that fits tightly within the expanded diameter section (30) when the lid (22) is closed. [Selection diagram] Figure 4

Description

Technical Field

[0001] The present invention relates to a medical device cap that functions as an external on-off valve for a medical device indwelling in the human body, such as a urethral catheter.

Background Art

[0002] Conventionally, the following are examples of the use of medical devices indwelling in the human body.

[0003] In many cases of female urinary incontinence and dysuria, urine management is difficult due to anatomical reasons of the external genitalia. For cases of dysuria, drug therapy (such as ubretid, α-blocker, etc.) and intermittent self-catheterization are currently widely practiced. In addition, for urinary incontinence patients, drug therapy (such as anticholinergics, imipramine, ephedrine hydrochloride, α-agonists, etc.), indwelling balloon catheter method, pelvic floor muscle training method, intermittent self-catheterization, urine collector, various diaper urination methods, etc. have been devised and have achieved certain results.

[0004] On the other hand, in patients with cerebrovascular disorders and spinal cord injuries, the response to drugs is insufficient or the dexterity of the hands is poor, so there are many cases where operations such as catheterization cannot be performed sufficiently and the patients are excluded from adaptation. In particular, in female patients with moderate or more hemiplegia and upper spinal cord injury patients (injuries above the seventh cervical vertebra), the current situation is that the only selectable urinary management methods are bladder fistula and diaper urination.

[0005] Also, even when using a urethral catheter, urine may adhere to the cap, and fine crystals may remain when it dries. When crystals adhere to the contact surface of the cap, irregularities occur and urine leakage occurs from between them. In order to solve such problems, for example, in female patients with difficult urination having residual urine, or in cases of urinary incontinence with bladder fistula or diaper urination, and moreover in cases with poor hand dexterity, a medical device cap for indwelling in the human body has been proposed that enables easy operations such as urine excretion and urine storage, and does not easily cause urine leakage even if irregularities are caused by urine crystals (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] However, in conventional medical device caps using the above-mentioned technology, the sealing material is simply sandwiched between the main body of the connecting plug and the lid, and there was a need for a medical device cap that provided a more airtight seal when the lid was closed.

[0008] The present invention aims to provide a medical device cap that can solve the problems of the above-mentioned conventional technology and improve sealing performance. [Means for solving the problem]

[0009] The present invention relates to a medical device cap having a connecting plug body and a lid, wherein the connecting plug body has an enlarged diameter portion in which a circular conduit widens toward the open end, and the lid has a circular outer circumference shape with a protruding sealing portion, and the sealing portion has an end formed around its entire circumference that tightly adheres to the enlarged diameter portion when the lid is closed.

[0010] In this case, the sealing portion may be formed in a cylindrical shape. The lid portion has a shaft portion that penetrates the sealing portion and holds the sealing portion with a flange portion formed at its end, and the sealing portion may be assembled to slide relative to the shaft portion. The sealing portion may be formed in a cylindrical shape. The enlarged diameter portion may be such that the conduit expands linearly toward the open end. The enlarged diameter portion may be such that the conduit expands curvilinearly toward the open end. [Effects of the invention]

[0011] This invention provides a medical device cap that can improve sealing performance. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view showing a medical device cap with the lid closed, according to one embodiment of the present invention. [Figure 2] This is a front view showing a medical device cap with the lid open. [Figure 3] This is a perspective view showing a medical device cap with the lid open. [Figure 4] This is a cross-sectional view showing a cap for a medical device. [Forms for implementing the invention]

[0013] A medical device cap according to one embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a front view showing the medical device cap with the lid closed, Figure 2 is a front view showing the medical device cap with the lid open, Figure 3 is a perspective view showing the medical device cap with the lid open, and Figure 4 is a cross-sectional view showing the medical device cap.

[0014] The medical device cap 20 is designed to be connected to a urethral catheter, urine collection bag, etc., either via a urinary drainage tube (not shown) or directly. The medical device cap 20 is made of an elastic resin and, as shown in Figure 1, has a connecting plug body 21 having a urinary drainage opening (pipe) 19 and a lid 22 molded integrally with the connecting plug body 21.

[0015] As shown in Figure 2, the main body of the connecting plug 21 has a connecting portion 23 for connecting to a urethral catheter or urine collection bag, and a seat portion 24 on the back side of the connecting portion 23 on which the lid portion 22 is placed. The connecting portion 23 and the seat portion 24 are formed with a circular urination opening 19 passing through the center. As shown in Figure 3, a magnet 1 is incorporated into the seat portion 24 of the connecting plug main body 21 near the upper edge of the urination opening 19. This magnet 1 is formed in an annular shape so as to surround the opening end 25 of the urination opening 19. The seat portion 24 of the connecting plug main body 21 has a projection 27 that protrudes outward from the seat portion 24 in a direction perpendicular to the direction in which the urination opening 19 extends. This projection 27 has a columnar portion 27a, and the tip 27b is wider in diameter than the columnar portion 27a.

[0016] The upper end of the seat portion 24 is provided with four projections 24a that contact the lower end of the lid portion 22 when the lid portion 22 is closed. These four projections 24a are arranged at approximately equal intervals in the circumferential direction so as to surround the opening end 25 of the urination opening 19, and more specifically, they are positioned at a 45-degree angle to a virtual line connecting the projection 27 and the center of the urination opening 19. As a result, when the lid portion 22 of the medical device cap 20 is closed, a gap is formed between the upper end of the seat portion 24 and the lower end of the lid portion 22.

[0017] The lid portion 22 has a shaft portion 26 that rises from the center of its inner surface, and a cylindrical seal portion 36 made of, for example, silicone rubber is assembled to this shaft portion 26. Specifically, the shaft portion 26 passes through the seal portion 36 and is held by a flange portion 26a formed at the end of the shaft portion 26. At this time, the contact surface of the seal portion 36 with the shaft portion 26 is provided to slide relative to the outer circumferential surface of the shaft portion 26 in the direction indicated by arrow Z in the figure, so that the seal portion 36 can be compressed and contracted along the shaft portion 26. In other words, the contact surface of the seal portion 36 with the shaft portion 26 is assembled to slide relative to the shaft portion 26.

[0018] As shown in Figure 4, an annular groove 28 is formed on the inner surface of the lid portion 22, centered on the shaft portion 26. A metal member 2 is incorporated into this annular groove 28 so as to be attracted to the magnet 1 by the magnetic force of the magnet 1. Similar to the magnet 1, this metal member 2 is formed in an annular shape so as to surround the opening end 25 of the urination opening 19 when the lid portion 22 is closed. In this embodiment of the medical device cap 20, a gap is formed between the magnet 1 and the metal member 2 due to the projection 24a of the base portion 24, which creates a gap between the upper end of the base portion 24 and the lower end of the lid portion 22.

[0019] The lid portion 22 has a plate-shaped locking portion 41 attached to it via a hinge portion 40, with a substantially uniform thickness. This locking portion 41 has a hole 42 formed therein for engaging with a projection 27 of the connecting plug body portion 21.

[0020] The locking portion 41 is fitted with a knob 43 that allows the user to swing the locking portion 41 relative to the lid portion 22. This knob 43 is formed to be thicker than the locking portion 41. A hole 43a is formed at the tip of the knob 43, allowing a string or the like to be passed through it.

[0021] The main body 21 of the connecting plug according to this embodiment has a circular urination opening 19 that expands linearly into a conical shape towards the opening end 25, forming an expanded diameter portion 30. On the other hand, the lid portion 22 is provided with a circular outer diameter seal portion 36 that protrudes, and the seal portion 36 has an end portion 36a that is formed around the entire circumference of the seal portion 36 that is in close contact with the expanded diameter portion 30 when the lid portion 22 is closed.

[0022] With this configuration, when the lid portion 22 is closed onto the connecting plug body portion 21, the end portion 36a of the sealing portion 36 comes into contact with the enlarged diameter portion 30 and undergoes elastic deformation, engaging with the enlarged diameter portion 30 to seal the urination opening 19, and the lid portion 22 is double-locked (secured) to the connecting plug body portion 21, as will be described later. At this time, the sealing portion 36 has an end portion 36a that comes into contact with the enlarged diameter portion 30, which is formed around the entire circumference of the sealing portion 36 with respect to the shaft portion 26. As a result, when the lid portion 22 is closed, stress is concentrated at the end portion 36a of the sealing portion 36, resulting in high sealing performance.

[0023] The double-locking structure will be described in detail below. When the lid 22 is closed onto the connecting plug body 21, the metal member 2 is attracted to the magnet 1 by the magnetic force of the magnet 1 (magnetic attraction locking). In addition, a projection 27 formed on the seat 24 of the connecting plug body 21 engages with the hole 42 of the locking portion 41 of the lid 22. In this way, the lid 22 is closed onto the connecting plug body 21 in a double-locking state, with the metal member 2 being locked (locked) by the magnetic force between the magnet 1 and the projection 27 engaging with the hole 42. Therefore, it is possible to provide a urine collection bag that does not easily leak urine even if urine adhering to the cap dries and forms fine crystals.

[0024] The cap 20 for a medical instrument according to this embodiment has an enlarged-diameter portion 30 in which a circular urine discharge opening 19 expands toward an opening end 25, and the lid portion 22 has a circular outer peripheral shape and is provided with a sealing portion 36 that protrudes. The sealing portion 36 has an end portion 36a that closely adheres to the inside of the enlarged-diameter portion 30 when the lid portion 22 is closed, and the end portion 36a is formed over the entire circumference of the sealing portion 36. Thereby, since stress is concentrated on the end portion 36a of the sealing portion 36 that abuts against the enlarged-diameter portion 30 of the connection plug main body portion 21, the sealing performance can be improved.

[0025] Further, the lid portion 22 has a shaft portion 26 that penetrates the sealing portion 36 and holds the sealing portion 36 with a flange portion 26a formed at the end portion. The contact surface of the sealing portion 36 with the shaft portion 26 is assembled so as to be slidable in the direction indicated by the arrow Z in the drawing with respect to the shaft portion 26. Thereby, since the sealing portion 36 can be compressed and contracted along the shaft portion 26, an appropriate reaction force is generated by the sealing portion 36 when the user closes the lid portion 22, and the usability can be improved.

[0026] As described above, the present invention has been described based on the embodiments, but the present invention is not limited to this. For example, in the above embodiment, the cylindrical sealing portion 36 is used, but the present invention is not limited to this. For example, the sealing portion may have a cylindrical shape.

[0027] Also, in the above embodiment, the enlarged-diameter portion 30 is formed such that the urine discharge opening 19 linearly expands toward the opening end 25, but the present invention is not limited to this. For example, the enlarged-diameter portion may be formed so as to expand in a curved manner.

[0028] Furthermore, in the above embodiment, the magnet 1 is incorporated on the seat portion 24 side and the metal member 2 is incorporated on the lid portion 22 side, but the present invention is not limited to this. For example, a metal member may be incorporated on the seat portion side and a magnet may be incorporated on the lid portion side, or magnets may be incorporated on each of the seat portion and the lid portion so that different polarities face each other.

Explanation of Reference Numerals

[0029] 1…Magnet 2...Metal parts 19...Urinary opening (duct) 20… Caps for medical devices 21...Connecting plug body 22...Lid part 23…Connection part 24...Seat part 24a…Protrusion 25...Open end 26... Shaft 26a…Flange section 27...Protrusion 27a...Columnar part 27b...tip 28...Groove 30... Expanded diameter part 36... Seal part 36a...end 40...Hinge section 41... Locking part 42...hole 43...Snack section 43a…hole

Claims

1. A medical instrument cap having a connection plug body and a lid, the connection plug body has an expanded diameter portion where the circular duct expands toward an open end, the cover is connected to the connection plug body via a connecting portion that is bent around the recess as a fulcrum, and a protruding seal portion having a circular outer periphery is attached to the cover; A cap for medical devices, characterized in that the sealing portion has an end formed around the entire circumference that is in close contact with the enlarged diameter portion when the lid portion is closed, and gaps are formed between the end and the opening end and between the sealing portion and the enlarged diameter portion.

2. The medical instrument cap according to claim 1, A cap for a medical instrument, wherein the sealing portion is formed in a cylindrical shape.

3. The medical instrument cap according to claim 2, A cap for a medical device, characterized in that the lid portion has a shaft portion that penetrates the seal portion and holds the seal portion with a flange portion formed at the end, and the seal portion is assembled slidably relative to the shaft portion.

4. The medical instrument cap according to claim 1, A cap for a medical instrument, wherein the sealing portion is formed in a cylindrical shape.

5. The medical instrument cap according to any one of claims 1 to 4, The cap for a medical instrument, wherein the enlarged diameter portion is such that the duct expands linearly toward the open end.

6. The medical instrument cap according to any one of claims 1 to 4, The cap for a medical instrument, wherein the expanded diameter portion is such that the duct expands in a curved manner toward the open end.

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