JP7318925B2 - medical device cap - Google Patents

Description

TECHNICAL FIELD The present invention relates to a medical device cap that functions as an external opening/closing valve for a medical device indwelling in the human body, such as a urinary catheter.

Conventionally, the following are examples of the use of indwelling medical devices.

Urinary incontinence and dysuria in women are often difficult to manage due to the anatomy of the external genitalia. Drug therapy (Ubletid, α-blocker, etc.) and intermittent self-catheterization are currently widely used for patients with dysuria. For patients with urinary incontinence, pharmacotherapy (anticholinergic agents, imipramine, ephedrine hydrochloride, alpha agonists, etc.), indwelling balloon catheter, pelvic floor muscle training, intermittent self-catheterization, urinary collector, various diaper urination Legislation has been devised and has achieved some success.

On the other hand, there are many patients with cerebrovascular disorders and spinal cord injuries who are ineligible because they cannot sufficiently operate catheters, etc. due to insufficient drug response or poor hand dexterity. Especially for female patients with moderate or higher hemiplegia and patients with upper spinal cord injury (injury of the 7th cervical vertebra or more), only bladder fistula and diaper urination are the only options for urination management.

Also, even when a urinary catheter is used, urine may adhere to the cap and leave fine crystals when dried. When crystals adhere to the contact surface of the cap, unevenness is formed and urine leakage occurs through the gaps. In order to solve such problems, for example, female patients with difficulty urinating with residual urine, or urinary incontinence patients with bladder fistula or diaper urination, and who have poor hand dexterity, can easily A cap for an indwelling medical device in the human body has been proposed, which is easy to operate for urine excretion and urine storage, and which does not easily leak urine even if unevenness is formed by urine crystals (see, for example, Patent Document 1).

JP-A-9-206370

However, the cap for a medical instrument according to the above-described prior art has a large number of parts and is relatively heavy due to the use of magnets.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a medical instrument cap that eliminates the problems of the prior art as described above and that has a reduced number of parts, is lightweight, and is easy to use even for patients with handicap.

The present invention provides a medical device cap having a connection plug main body and a lid, wherein the connection plug main body has a cylindrical opening with projections along the outer circumference, and the lid comprises: It has a cylindrical fitting portion provided with projections along the inner periphery, and the fitting portion incorporates a seal portion having a flat ring-shaped surface, and when the lid portion is closed, the The fitting portion is fitted into the opening, and the ring-shaped surface of the seal portion is in contact with the open end of the opening.

In this case, the connection plug main body has a protrusion formed by expanding the diameter of the tip of the columnar part, and the lid has a plate-like locking part attached via a hinge. The locking portion is formed with a hole for fitting into the protrusion, and is attached with a lever portion for swinging the locking portion with respect to the lid portion. , and may be formed thicker than the locking portion. The hole portion of the locking portion may be positioned approximately midway between the hinge portion and the lever portion. The lever portion may extend in an out-of-plane direction of the locking portion and be curved. The lever portion may be formed so that the thickness becomes thinner toward the tip. The opening may be formed in the shape of a connection plug. The connection plug main body may have a housing that accommodates the opening. The connection plug main body may be provided with a receiving portion in the opening for receiving an external connection plug. The receiving portion may be made of a softer material than the connection plug body portion.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a medical instrument cap which is light in weight with a small number of parts and which is easy to use even for patients with handicapped fingers.

1A and 1B are a front view and a side view of a medical device cap according to an embodiment of the present invention; FIG. 1 is a cross-sectional view showing a medical device cap; FIG. FIG. 11 is a cross-sectional view showing a medical device cap according to a modified example; FIG. 11 is a cross-sectional view showing a medical device cap according to another modified example;

Hereinafter, a medical device cap according to one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view and a side view showing a cap for medical instruments, and FIG. 2 is a sectional view showing the cap for medical instruments. In FIG. 1, FIG. 1(a) is a front view showing the medical device cap, and FIG. 1(b) is a side view showing the medical device cap.

As shown in FIG. 1(a), the medical device cap 20 is provided to be connected to a urinary catheter, a urine bag, or the like via a urination tube (not shown) or the like or directly. The medical device cap 20 is made of elastic resin, and includes a connection plug main body 21 having a urination opening 19 (see FIG. 2) and a lid 22 integrally formed with the connection plug main body 21 . have.

As shown in FIG. 1(b), the connection plug main body 21 is formed with a connection portion 23 for connection to a urinary catheter, a urine bag, etc., and a lid portion 22 is provided on the back side of the connection portion 23. A seat portion 24 on which the is placed is formed. As shown in FIG. 2, the connection portion 23 and the seat portion 24 are formed with a urination opening 19 penetrating through the center thereof. The seat portion 24 of the connection plug main body 21 is formed with an opening 25 having a cylindrical shape along the direction in which the urination opening 19 penetrates. An annular projection 26 is formed along the outer periphery. Further, the seat portion 24 of the connection plug main body portion 21 is formed with a projection portion 27 projecting outward from the seat portion 24 in a direction perpendicular to the direction in which the urination opening 19 extends. The projecting portion 27 has a shape in which the tip 27b of the columnar portion 27a is larger in diameter than the columnar portion 27a.

Lid 22 is provided with an annular groove portion 28 shaped to receive opening 25 . The annular groove portion 28 is formed by an inner annular portion 29 rising upward from the inner surface of the lid portion 22 and a fitting portion 31 having a cylindrical shape. An inner annular projection 32 projecting radially outward is formed on the outer surface of the inner annular portion 29, while an outer annular projection 33 projecting radially outward is formed on the inner surface of the fitting portion 31. are provided along the inner periphery.

Between the fitting portion 31 and the inner annular portion 29 is a sealing portion 36 made of, for example, silicone rubber and having a flat ring-shaped surface. The fitting portion 31 is configured so that the flat ring-shaped surface of the seal portion 36 abuts the opening end of the opening 25 when the lid portion 22 is closed and is fitted to the opening 25 of the connection plug main body portion 21 . ing.

A plate-like engaging portion 41 is attached to the lid portion 22 via a hinge portion 40 with a substantially uniform thickness. The locking portion 41 is formed with a hole portion 42 for engaging with the projection portion 27 of the connection plug main body portion 21 .

The locking portion 41 is attached with a lever portion 43 for swinging the locking portion 41 with respect to the lid portion 22 by being operated by the user. The lever portion 43 extends so as to protrude in the out-of-plane direction of the engaging portion 41, is thicker than the engaging portion 41, and is formed so that the thickness decreases toward the tip. there is As a result, the lever portion 43 can firmly hold the locking portion 41 at its base, and the tip portion, which is touched by the user's hand during use, can be made relatively soft. A hole 43a is formed at the tip of the lever portion 43 so that a string or the like can be passed therethrough.

The lever portion 43 and the locking portion 41 are formed thicker than the hinge portion 40 . Further, the hinge portion 40 has substantially the same width as that of the locking portion 41 as shown in FIG. is considerably narrow, more specifically narrower than the thickness of the engaging portion 41 . As a result, the locking portion 41 swinging about the hinge portion 40 as indicated by an arrow B is not twisted with respect to the lid portion 22, and the lever portion 43 and the locking portion 41 are connected to the lid portion. 22 is adapted to move only in one axial direction. As a result, rattling of the lever portion 43 is suppressed, and when the user operates the lever portion 43, the lever portion 43 and the locking portion 41 always follow the same track indicated by the arrow B. The operability is improved even for the user.

The hole portion 42 of the locking portion 41 is positioned approximately midway between the hinge portion 40 and the lever portion 43 . That is, a substantially intermediate position between the hinge portion 40 and the lever portion 43 is positioned within the hole portion 42 . As a result, when the protrusion 27 is engaged with the hole 42 of the locking portion 41 , the locking portion 41 formed in a plate shape with a substantially uniform thickness is positioned on the hinge portion 40 side with respect to the hole 42 . and the lever portion 43 side are curved in the same shape. At this time, the diameter of the hole portion 42 of the locking portion 41 is smaller on the inside of the curve than on the outside, and the shape of the hole is distorted in a substantially symmetrical shape on the side of the hinge portion 40 and the side of the lever portion 43. When the portion 27 passes through the hole portion 42 and is snap-fitted, the user can obtain an appropriate hooking feeling and engagement sound.

With this configuration, when the lid portion 22 is closed to the connection plug main body portion 21, the seal portion 36 is elastically deformed and engages with the open end of the opening portion 25 to seal the urination opening 19 and, as will be described later, the lid portion. 22 is doubly locked (locked) with respect to the connection plug body portion 21 . At this time, since the contact surface of the seal portion 36 with the opening portion 25 is formed flat, the open end of the opening portion 25 will vigorously contact the seal portion 36 when the lid portion 22 is closed. It has become. That is, if the seal portion 36 is formed with a circular cross section such as an O-ring, the top surface of the circular cross section of the O-ring contacts the opening portion 25 from an early stage when the lid portion 22 is closed. However, in this embodiment, since the contact surface is formed flat, the user can feel a moderate feeling of catching and snap-fitting. An engagement sound can be obtained.

The double lock structure will be specifically described below. When the lid portion 22 is closed to the connection plug main body portion 21, the annular projection 26 and the outer annular projection portion 33 are engaged with each other, and the inner annular projection portion 32 presses the inner surface of the opening portion 25 to press the annular projection 26 and the outer annular projection portion 33 together. The engagement state with the annular protrusion 33 is made stronger. Furthermore, the protrusion 27 formed on the seat portion 24 of the connection plug main body portion 21 engages with the hole portion 42 of the locking portion 41 . In this manner, the engagement between the annular projection 26 and the outer annular projection 33 and the lock by pressing the inner annular projection 32 against the inner surface of the opening 25 to strengthen this engagement state, and the projection 27 and the hole 42 are locked. Since the lid portion 22 is closed to the connection plug body portion 21 in the double locked state of the lock due to the engagement with the cap, even if the urine adhering to the cap dries and forms fine crystals, it is easy to do so. It is designed to prevent urine leakage in the

The medical device cap 20 according to this embodiment has a connection plug main body 21 having a cylindrical opening 25 with an annular projection 26 provided along the outer circumference, and an outer annular projection 33 provided along the inner circumference. The fitting portion 31 incorporates a sealing portion 36 having a flat ring-shaped surface, and is fitted when the lid portion 22 is closed. The joint portion 31 fits into the opening portion 25 and the ring-shaped surface of the seal portion 36 contacts the open end of the opening portion 25 . As a result, the locked state can be strengthened without using a magnet or the like, so that a lightweight medical instrument cap with a small number of parts can be provided.

Although the present invention has been described above based on the embodiments, the present invention is not limited thereto. For example, although the above embodiment uses the opening 25 that functions only as a normal open end, the present invention is not limited to this. For example, as shown in FIG. 3, the opening 25 is formed to have a base portion 25a extending toward the connecting portion 23 so that the outer diameter gradually increases, and the opening 25 is formed in the shape of a connection plug. The medical device cap 120 may have a connecting plug main body 121 . The connection plug main body 12 has a housing 37 that accommodates the opening 25 , so that the outer annular projection 33 of the lid 22 is fitted into the annular projection 26 of the opening 25 so that the opening 25 is closed. is closed, the opening 25 is hermetically sealed within the housing 37 and the lid 22 together with the base 25a. In this modification, the opening 25 functions as a connection plug, so that a tube or the like can be connected to the opening 25 .

Alternatively, for example, as shown in FIG. 4, the opening 25 is formed to have a larger inner diameter to form a housing portion 38, and the inner diameter of the housing portion 38 gradually narrows toward the connecting portion 23 within the housing portion 38. The medical device cap 220 may have a connection plug main body 221 that accommodates the receiving portion 44 that is formed so as to be tightly fitted to the connection plug. The receiving portion 44 is made of a material softer than the connection plug main body portion 221, for example, an elastic material such as silicone rubber, but may also be made of isoprene rubber, thermoplastic resin, or the like. When the opening 25 is closed by fitting the outer annular protrusion 33 of the lid 22 to the annular protrusion 26 of the opening 25, the connection plug main body 221 is connected to the housing 38 and the lid. It is adapted to be sealed within the portion 22 . In this modified example, a receiving portion 44 capable of receiving and connecting a connection plug is provided in the opening 25 , so that a connection plug of another medical instrument or the like can be connected to the receiving portion 44 . 3 and 4, the projection 27 for doubly locking the lid 22 and the locking portion 41 having the hole 42 and provided to the lid 22 by the hinge 40 may have

DESCRIPTION OF SYMBOLS 19... Urination opening 20... Cap for medical instruments 21... Connection plug main-body part 22... Lid part 23... Connection part 24... Seat part 25... Opening part 25a... Base part 26... Annular protrusion 27... Protrusion part 27a... Columnar part 27b... Tip 28... Annular groove part 29... Inner annular part 31... Fitting part 32... Inner annular protrusion 33... Outer annular protrusion 36... Seal part 37... Accommodating part 38... Accommodating part 40... Hinge part 41... Locking part 42... Hole portion 43 Lever portion 44 Receiving portion

Claims (10)

A medical instrument cap having a connection plug main body and a lid,
The connection plug main body has a cylindrical opening provided with an annular projection along the outer circumference,
The lid portion has an inner annular portion provided with an inner annular protrusion along the outer periphery and a cylindrical fitting portion provided with an outer annular protrusion along the inner periphery,
The fitting portion incorporates a sealing portion having a flat ring-shaped surface, and the outer annular projection of the fitting portion fits with the annular projection of the opening when the lid is closed. At the same time, the ring-shaped surface of the seal portion abuts the opening end of the opening,
The seal portion has an inner diameter smaller than the outer diameter of the inner annular protrusion and an outer diameter larger than the inner diameter of the outer annular protrusion,
The cap for a medical device, wherein the inner annular protrusion presses the inner surface of the opening of the connection plug main body when the lid is closed. 2. The medical device cap according to claim 1, wherein the connection plug main body has a protrusion formed by expanding the diameter of the tip of the columnar part, and the lid has a plate-like locking structure via a hinge. A portion is attached to the locking portion, and the locking portion is formed with a hole for fitting into the protrusion, and is attached with a lever portion for swinging the locking portion with respect to the lid. , wherein the lever portion is formed thicker than the locking portion. 3. The cap for medical instruments according to claim 2, wherein said hole of said engaging portion is positioned between said hinge portion and said lever portion. 4. The medical instrument cap according to claim 2, wherein the lever portion extends in an out-of-plane direction of the engaging portion and is formed to be curved. . 5. The medical instrument cap according to any one of claims 2 to 4, wherein said lever portion is formed so that its thickness decreases toward its tip. 2. The medical instrument cap according to claim 1, wherein said opening is formed in the shape of a connection plug. 7. The medical instrument cap according to claim 6, wherein said connection plug main body has a housing for accommodating said opening. 8. The medical instrument cap according to claim 7, wherein said opening is a connection plug to which a tube can be connected. 2. The medical instrument cap according to claim 1, wherein said connection plug main body has a receiving portion for receiving an external connection plug provided in said opening. 10. The medical instrument cap according to claim 9 , wherein said receiving portion is made of a material softer than said connecting plug body portion.

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