JPS5820635B2 - catheter adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In performing various medical and surgical procedures, the distal end of the catheter may be placed in a body cavity or tubular region (e.g., ureter).
The proximal end of the catheter needs to be connected to one or more elements (eg, a container or syringe for collecting liquid).

It is an object of this invention to provide an improved adapter for holding various catheters in secure, leak-proof engagement and providing communication between the catheter and other components.

It is another object of the present invention to provide an adapter for leak-tight coupling between an adjacent end of a catheter and a device for delivering irrigation fluid, thereby providing a There is no need to insert the catheter into the catheter itself.
Therefore, a smaller diameter catheter can be used.

The invention therefore provides a catheter having a body with a cylindrical recess for receiving a catheter and another recess communicating with the cylindrical portion for connecting the catheter to the syringe or urine collection device. The cylindrical recess has an outer cylindrical surface with a larger diameter adjacent to an inner cylindrical surface with a gradually decreasing diameter corresponding to the outer diameter of various standard catheters; An elastic stopper is provided which is inserted into the outer cylindrical surface of the cylindrical recess to form a seal, and the elastic stopper defines an opening through which the catheter is passed through the fourth part of the inner diameter not exceeding the inner diameter of the smallest diameter cylindrical surface part of the cylindrical recess. An object of the present invention is to provide a catheter adapter characterized by the following features:

Some embodiments of the invention are illustrated in the accompanying drawings.

The adapter shown in FIG. 1 has a body 10 of transparent rigid plastic material and a closure member or resilient rubber plug 12 which can be inserted into a recess 14 in the body 10. is being used.

The recess 14 has at its lower end a series of adjacent cylindrical surfaces 16 having a common axis 18 and a step surface 17 perpendicular to the axis 18.

Recess 14 has a large cylindrical surface 20 adjacent open end 22 of body 10 that fits into central portion 24 of stopper 12 .

The protruding portion 26 integrally provided on the circumference of the central portion 240 is
A suitable leak-proof engagement is formed between the plug 12 and the cylindrical surface 20.

Bung 12 includes an integral annular skirt 28 surrounding body 10.
and is capable of engaging an integral edge 30 on the outer surface of the body 10, thereby ensuring a slip fit between the bung 12 and the body 10 and sealing therebetween to prevent leakage. help.

An opening 32 having a flattened portion 34 is provided in the central portion 24 of the stopper 12 and is located coaxially with the axis 18 when the stopper 12 is in position within the quadrant 14.

The skirt 28 is connected to the second plug 3 by an integral web 36.
It is connected to 8.

The plug 38 is insertable into a second recess 40 of the body 10 as shown in FIG.
The main body 100 tapers from a large diameter portion adjacent to the lower end 42 to a small diameter portion at the upper end, and the recess 40 communicates with the recess 14 at the upper end.

A stop surface 44 perpendicular to the axis 18 is provided at the upper end of the quadrant 40 .

Bung 38 has a skirt that wraps around the lower edge of body 10 as shown.

The size and taper of recess 40 and the size of surface 44 are appropriately sized to fit the end of a standard syringe.

The third recess 46 of the main body 10 also communicates with the second recess 40 .

The axis 48 of the recess 46 is inclined with respect to the axis 18 by an acute angle A.

The connecting portion 50 is provided at the outer end of the recess 46 .

The operation of this adapter is illustrated in FIGS.

As shown in FIG. 2, a standard urinary catheter 52
The adjacent end 54 of passes through the opening 32 of the stopper 12 and correspondingly sized surface 16 . T7 is positioned within the recess 14 by engaging the distal end thereof (
(not shown) is inserted into the patient's ureter.

In this way, the catheter 52 has two surfaces 16, 17.
It is firmly supported in three places.

The various paired surfaces 16, 17 have an outer diameter of only 1/1
It is sized to fit a variety of standard French catheter sizes that vary by 0.000 m.

(The increase in diameter between successive surfaces 16 is shown exaggerated in the drawing for clarity.

) The opening 32 is sized to form a leak-tight fit with the smallest French catheter, but can widen to accommodate larger catheters due to the resiliency of the material of the plug 12.

With the bung 38 engaged with the end 42 of the body 10 shown to close the recess 40, liquid delivered from the catheter 52 flows through the recess 46 into a common drain tube 55. is removably attached to the connecting portion 50.

If it is desired to irrigate the catheter, the bung 38 may be used to allow fluid to pass through the catheter to relieve the catheter's occlusion, or to apply a drug or radiopaque dye to the body cavity traversed by the catheter. , second recess 4
0, and into this recess 40 the end 58 of the syringe 60 is inserted as shown in FIG.

The end surface 56 of the end 58 contacts the stop surface 44 and the end 58
The tapered side wall of 8 closes the recess 46, thereby eliminating the need for a separate plug in the recess 46 or for tightening the drain tube 55.

Liquid 62 is then delivered from syringe 60 into catheter 52 .

Because the end 58 is a snug fit within the recess 40 and against the surface 44 and the end 54 of the catheter 52 abuts the surface 16° 17, when liquid is delivered from the syringe 60 into the catheter 52, the liquid There is little, if any, leakage or pressure loss.

When the introduction of liquid into catheter 52 is complete, syringe 60 is removed and stopper 38 is returned to its original position.

In the embodiment shown in FIGS. 4 and 5, the second recess 40 is
The third angled recess 46, which communicates with the discharge tube 55, is tapered to fit the end 58 of the syringe 60.

If irrigation is to be performed (FIG. 5), a clamp 64 is attached to the drain pipe 55.

The plug 66 fits into the recess 4 when the recess 46 is not in use.
6 (Fig. 4).

Of course, certain features of the adapter can be eliminated if they are no longer needed to perform some medical and surgical procedures.

Thus, for example, in retrograde nephrography, in which a small sample of urine is collected by injection of a radiopaque dye, the recess 46 is
and the second plug 38 would be unnecessary.

This is because, as shown in FIG. 6, the vial 68 for collecting the urine sample can be directly connected to and supported by the lower edge 43 of the adapter.

Immediately after collecting the material, the vial 68 is replaced with a syringe 130 for injection of dye, which syringe 60 is received within the recess 40 as shown in FIG.

If only the discharge is to be carried out, the adapter can be of the type shown in FIG.
It surrounds the extension part 70 of 0.

This invention can be implemented as follows.

(1) having a body with a recess for receiving a catheter, the recess comprising a number of coaxially formed cylindrical surfaces of different diameters corresponding to the outer diameters of various standard catheters, and surrounding the recess; a closure member of resilient material capable of engaging the body in such a manner as to have an opening for the passage of the catheter into the four parts thereof, the opening being coaxial with said cylindrical surface and located at the smallest point of said cylindrical surface; An adapter for a catheter having a diameter not exceeding a diameter, wherein the cylindrical surface is arranged to correspond to the size of the surface having the largest diameter closest to the opening.

(2) The catheter adapter according to item (1), wherein the main body has a second recess that communicates with the first recess and is arranged coaxially with the cylindrical surface.

(3) The main body has a third recess that communicates with the outside and the second recess, and the axis of the third recess is inclined at an acute angle with respect to the axis of the second four parts. Catheter adapter.

(4) The catheter adapter according to item (3), wherein the second or third recess is tapered to fit the end of a standard syringe.

(5) Any of the preceding items in which the main body is formed of a rigid material, the closing member is a resilient plug, and the plug is capable of engaging with an additional cylindrical surface of a recess formed by a number of coaxial cylindrical surfaces. The catheter adapter described in one of the above.

(6) The catheter adapter according to item (5) above, wherein the main body has a circumferential outer edge that can be engaged by an integral skirt provided on the plug.

(The catheter adapter according to items (2) and (5) above, wherein the plug is connected to the second plug that closes the second recess by an integrated web.

(8) The catheter adapter according to any one of the preceding items, wherein the main body is made of a transparent material.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the catheter adapter according to the present invention, and FIG. 2 is the same longitudinal sectional view as FIG.
3 is the same longitudinal cross-sectional view as FIG. 2 showing the end of the syringe connected to the adapter; FIG.
5 is a partially sectional side view of another embodiment of the adapter, and FIG. 6.7 is a partially sectional side view of two other embodiments of the adapter. 10: main body, 12: closing member, 14: recess, 16: cylindrical surface, 32: opening, 52: catheter.

Claims (1)

[Claims] 1. An adapter for a catheter that connects the catheter to a syringe or a urine collection device, the body having a cylindrical recess for receiving a catheter and another recess communicating with the cylindrical recess for connecting to a syringe or a urine collection device, comprising: The cylindrical quadrilateral 14 has a larger diameter outer cylindrical surface 20 adjacent to an inner cylindrical surface 16 of gradually decreasing diameter, corresponding to the outer diameter of various standard catheters, and the outer cylindrical quadrant 14 has a larger diameter outer cylindrical surface 20 adjacent to an inner cylindrical surface 16 of gradually decreasing diameter. An elastic plug 12 is provided which is inserted into the cylindrical surface 20 to form a seal, and this elastic plug 12 allows the catheter to pass through the recessed portion whose inner diameter does not exceed the inner diameter of the smallest diameter cylindrical surface portion 16 of the cylindrical recess 14. A catheter adapter characterized by having an opening 32.