JPH09122245A - Multicatheter connector, manufacture and using method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect one main current catheter to a plurality of tributary catheters at the same time. SOLUTION: A multicatheter connector has a female screw on the inner circumferential surface of the front end 111 and consists of a cylindrical male housing 11 provided with an inner flange 114 extending radially inside from the inner circumferential surface of the rear end 113, a male housing provided on the outer peripheral surface of the rear end 121 with a male screw 122 screwed in the female screw 112 and an elastic member 14 to support a plurality of pipe-like guides 13 nearly in parallel at an interval. The rear end 131 of the pipe-like guide projects from the rear end of the female housing through a hole 115 defined by the inner flange, and the elastic member 14 is inserted into the rear end of the female housing 11 so that the front end 132 of the pipe-like guide is received in the front end of the female housing 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-catheter connecting device for connecting a mainstream catheter connected to a drug solution injection port, a reservoir or the like mainly used for cancer chemotherapy, and a tributary catheter extending to a treatment site. The present invention relates to a manufacturing method and a method of using the same.

[0002]

2. Description of the Related Art Conventionally, for example, as a connecting device for connecting a mainstream catheter connected to a drug solution injection port, a reservoir, etc., and a tributary catheter connected to a treatment site of a human body during treatment of chemotherapy for cancer, There is one as shown in FIG. This connecting device 1 is a port 1 for injecting a liquid medicine.
00 (see FIG. 5) and the mainstream catheter 2 and the tributary catheter 3 extending to the required treatment site of the patient in a one-to-one relationship.
Are connected in a relationship. However, with this connecting device 1,
It is not possible to simultaneously connect a plurality of tributary catheters that respectively extend to a plurality of parts of a patient to a mainstream catheter that is connected to a drug solution injection port or the like. Conventionally, when chemotherapy is applied to a plurality of sites at the same time, a plurality of mainstream catheters 2 and connecting devices 1 and a plurality of drug solution injection ports or reservoirs must be used.

However, in that case, the burden on the patient and the operator is large.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a single mainstream catheter connected to a drug injection port or reservoir and a plurality of tributaries each extending to multiple sites of the patient when the patient is given chemotherapy. It is an object to obtain a multi-catheter connecting device capable of simultaneously connecting with a catheter, a manufacturing method thereof, and a method of using the same.

[0005]

The multi-catheter connecting device of the present invention has a female thread on the inner peripheral surface of the front end, and
A cylindrical female housing provided with an inner flange extending inward in the radial direction from the inner peripheral surface of the rear end, and a male housing having a male screw threaded on the outer peripheral surface of the rear end that is screwed into the female screw.
The above problem is solved by means of an elastic member that supports a plurality of tubular guides in parallel at a distance.

The elastic member is female so that the rear end of the tubular guide projects from the rear end of the female housing through the hole defined by the inner flange and the front end of the tubular guide is received within the front end of the female housing. It is inserted into the rear end of the housing.
The male threads of the male housing are screwed onto the female threads of the female housing such that the front end of the tubular guide is received within the rear end of the male housing. When the male and female screws of both housings are relatively tightened, the elastic member is compressed and fixed between the front end face of the inner flange and the rear end face of the male housing.

Each front end of the plurality of tubular guides communicates with a single front end of the male housing.

A flange for narrowing down the cover may be provided on the outer circumference of the female housing.

A small-diameter cylinder portion may be provided extending from the inner flange of the female housing toward the rear end side in the axial direction, and a flange for narrowing the cover may be provided on the outer periphery of the small-diameter cylinder portion.

According to the method for manufacturing a multi-catheter connecting device of the present invention, an elastic member is inserted from the rear end into a hollow male jig having a partition wall with a hole in the center, and a female jig having a plurality of conducting holes is maleized. Connecting to the rear end of the jig, fixing the elastic member in the male and female jig, inserting the tubular guide into the through hole and pressing the tubular guide to penetrate the elastic member, the rear end of the tubular guide is Positioning the tubular guide so that it projects from the rear end of the through hole and the front end of the tubular guide projects from the hole of the partition wall, insert a pin into the tubular guide to remove scraps of the elastic member, and remove the tubular guide. Taking out the held elastic member from the male and female jig and inserting it into the female housing, connecting the male housing to the female housing, the rear end of the tubular guide protruding from the rear end face of the female housing, and It solves the problem by means of the front end of the tubular guide consists of compressing fixing the elastic member to be received within the rear end of the male housing in the two housings.

The method of using the multi-catheter connecting device of the present invention is a cylindrical female in which a female thread is formed on the inner peripheral surface of the front end and an inner flange extending radially inward from the inner peripheral surface of the rear end is provided. It consists of a housing, a male housing with an external thread on the outer peripheral surface of the rear end that is threadedly engaged with an internal thread, and an elastic member that supports a plurality of tubular guides at approximately intervals in parallel. When tightened relatively, the elastic member is compressed and fixed between the front end face of the inner flange and the rear end face of the male housing, the rear end of the tubular guide projects from the rear end of the female housing, and the front end of the tubular guide is fixed to the male end. Providing a multi-catheter connection device configured to be housed within the rear end of the housing, disassembling the male and female housings, and removing the elastic member holding the tubular guide, a prescribed treatment A plurality of tributary catheters to be connected to the female housing from its rear end, inserting each tributary catheter protruding from the female housing into each tubular guide, and inserting each tubular guide into the elastic member and each tributary. Removing from the catheter, trimming the end of each tributary catheter to a predetermined length with respect to the front end face of the female housing, screwing a male housing into the female housing to accommodate each trimmed tributary catheter end, The problem is solved by means comprising connecting the front end of the housing to a mainstream catheter.

[0012]

In the multi-catheter connection device of the present invention, the tubular guide inserted into the elastic member is withdrawn from the elastic member after inserting and guiding each catheter. The catheter is then held tightly and tightly within the member by the restoring force of the elastic member.

In this way, the front end of each tributary catheter, the rear end of which extends to each site, is housed in the rear end internal space of the male housing of the connecting device. The front end of the male housing is connected to a single mainstream catheter that is connected to a drug injection port, a reservoir, etc.

Therefore, the connecting device of the present invention enables simultaneous connection of one mainstream catheter to a plurality of (multi) tributary catheters.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a multi-catheter connecting device of the present invention, a method of manufacturing the same, and a method of using the same will be described below with reference to FIGS.

<Embodiment of Multi-Catheter Connection Device> FIG. 1 shows a first embodiment of the multi-catheter connection device of the present invention, and FIG. 1A is an exploded vertical sectional view of the connection device. Yes, (B) is a vertical cross-sectional view after assembly of the connecting device, and (C) is a side view of (B).
2 shows a second embodiment corresponding to the connecting device shown in FIG. 1, and FIGS. 2 (A), (B), and (C) are drawings showing (A), (B), and FIG. It is drawing corresponding to each (C) figure.

In the following description, the "front end" refers to the right side portion of each element in the drawings for convenience of explanation, and the "rear end" refers to the left side portion of each element in the drawings. .

In the connecting device 10 of the present invention, as shown in FIGS. 1 and 2, a female screw 112 is cut on the inner peripheral surface of the front end 111,
A cylindrical female housing 1 provided with an inner flange 114 extending radially inward from the inner peripheral surface of the rear end 113.
1, a male housing 12 in which an external thread 122 to be screwed into the internal thread 112 is cut on the outer peripheral surface of the rear end 121, and an elastic member 14 that supports a plurality of tubular guides 13 at substantially equal intervals.

The rear end 131 of the tubular guide 13 projects from the rear end 113 of the female housing 11 through a hole 115 defined by the inner flange 114, and the front end 132 of the tubular guide 13 is within the front end 111 of the female housing 11. The elastic member 14 allows the rear end 113 of the female housing 11 to be housed.
Is inserted into. The male screw 122 of the male housing 12 is screwed into the female screw 112 of the female housing 11 so that the front end 132 of the tubular guide 13 is accommodated in the rear end 121 of the male housing 12. When the male and female screws 112, 122 of the housings 11, 12 are relatively tightened, the elastic member 14 is compressed and fixed between the front end surface 116 of the inner flange 114 and the rear end surface 123 of the male housing 12. Each front end 132 of the plurality of tubular guides 13 communicates with a single front end 124 of the male housing 12, respectively.

The male and female housings 11 and 12 are preferably made of a metallic material. The elastic member 14 is preferably made of silicone rubber. The tubular guide 13 is preferably made of a metallic material.

In the first embodiment shown in FIG. 1, a flange 117 for narrowing down the cover is provided on the outer periphery of the female housing 11. In addition, in the second embodiment shown in FIG.
A small-diameter cylindrical portion 118 extending from the inner flange 114 of the female housing 11 toward the rear end side in the axial direction is provided.
A flange 119 for narrowing down the cover is provided on the outer circumference of 8.

<Example of Manufacturing Method of Multi-Catheter Connection Device> The present example is characterized in the step of attaching the tubular guide 13 to the elastic member 14. Less than,
The manufacturing method of the connecting device will be described focusing on this step.

FIG. 3 is an explanatory view showing a step of attaching the tubular guide 13 to the elastic member 14 used in the connecting device of the present invention.

In the following description, the "front end" means the right side portion of each element in the drawing for convenience of explanation, and the "rear end" means the left side portion of each element in the drawing. .

As shown in FIG. 3, the method of manufacturing the multi-catheter connecting device 10 of the present invention has a rear end 2 in a hollow male jig 22 having a partition wall 222 having a hole 221 in the center.
The elastic member 14 is inserted from 23 (A, B). A female jig 21 (A) having a plurality of conduction holes 211 is connected to a rear end 223 of the male jig 22 (B). The elastic member 14 is used for the male and female jig 2
Fix inside 1 and 22 (B). The tubular guide 13 is inserted into the conduction hole 211, and the tubular guide 13 is pressed so as to penetrate the elastic member 14 (C). Rear end 1 of tubular guide 13
The tubular guide 13 is positioned so that 31 projects from the rear end of the conduction hole 211 and the front end 132 of the tubular guide 13 projects from the hole 221 of the partition wall 222 (C). The pin 23 is inserted into the tubular guide 13 to remove scraps of the elastic member 14 (C). Elastic member 14 holding tubular guide 13
(D) is taken out from the male and female jigs 21 and 22 and inserted into the female housing 11 (FIG. 1 (B), FIG. 2 (B)). The male housing 12 is connected to the female housing 11 (see FIG. 1).
(B), FIG. 2 (B)). The elastic member 14 is arranged so that the rear end 131 of the tubular guide 13 projects from the rear end surface of the female housing 11 and the front end 132 of the tubular guide 13 is housed in the rear end 121 of the male housing 12.
It is compressed and fixed in 12 (FIG. 1 (B), FIG. 2 (B)).

<Example of Method of Using Multi-Catheter Connecting Device> An example of the method of using the connecting device 10 of the present invention will be described with reference to FIGS.

FIG. 4 is an explanatory view showing a process of connecting the catheters 30 and 40 to the connecting device 10 of the present invention, and FIG. 5 shows an example of using the connecting device 10 of the present invention in the human body. It is a schematic explanatory drawing.

In the following description, the "front end" refers to the right side portion of each element in the drawings for convenience of explanation, and the "rear end" refers to the left side portion of each element in the drawings. .

In the method of using the multi-catheter connecting device 10 in this embodiment, first, the connecting device 10 described with reference to FIGS. 1 and 2 is prepared. Next, as shown in FIG. 4, the male and female housings 11 and 12 are disassembled, and the elastic member 14 holding the tubular guide 13 is taken out (A). A plurality of tributary catheters 40 each extending to a predetermined treatment site of the human body (see FIG. 5) are provided in the female housing 11 at the rear end 113 thereof.
Insert from (A). Each tributary catheter 40 protruding from the female housing 11 is inserted into each tubular guide 13 (B). Each tubular guide 13 is pulled out from the elastic member 14 and each tributary catheter 40 (C).

With respect to the front end face of the female housing 11, the end portion 41 of each tributary catheter 40 is set to a predetermined length (preferably 1).
Cut to 10 mm) (D).

The male housing 12 and the female housing 11 are housed so as to accommodate the ends of the trimmed tributary catheters 40.
(E).

The front end 121 of the male housing 12 is connected to the mainstream catheter 30 (F). An overall vertical sectional view at this time is shown in FIG. As shown in the drawing, one mainstream catheter 30 is communicated with a plurality of tributary catheters 40 at the same time through the connecting device 10.

In order to protect the connecting portion of the front end portion of the tributary catheter 40 with the rear end portion of the connecting device 10,
It is preferable that the front end of the cover 50, which has been made to stand by in the middle portion of the tributary catheter 40 in advance, is fitted into the flange 117 provided on the outer periphery of the female housing 11 and is squeezed by a thread 51 to be fixed.

The connecting device 10 of the present invention comprises a liver, a kidney,
It can also be widely used for chemotherapy for organs on the left and right of the human body such as lungs, testes, ovaries, or organs having multiple blood vessels.

For example, FIG. 5 shows a treatment example of catheter placement in the hepatic artery 201. The chemical injection port 100 is buried above the chest of the human body. The connecting device 10 of the present invention is prepared on the right side of the waist of the human body. The proximal end of each tributary catheter 40 (three in the illustrated example) whose one end reaches each site of the hepatic artery 201 from the deep femoral artery 202 through the abdominal aorta 203 is attached to the rear end of the female housing 11 of the connecting device 10 according to the procedure described above. Connecting. The other end of one mainstream catheter 30, one end of which is connected to the port 100, is then connected to the male housing 12 of the connecting device 10 according to the procedure described above.

In this way, the chemical injection port 100
Through the mainstream catheter 30, the connecting device 10, and the tributary catheters 40, they are simultaneously communicated with the necessary sites in the hepatic artery 201.

After that, the connecting device 10 and the tributary catheter 4
The cover 50 is fixed at the connection point with 0, and the whole is embedded in the human body. Although the example in which the whole is embedded in the human body has been described here, the connecting device 10 may be fixed to the outside of the human body by using a thread or a bandage.

[0038]

According to the present invention, the following effects can be obtained.

(1) The connecting device connects a mainstream catheter connected to a drug solution injection port or a reservoir with a tributary catheter extending to a treatment site of the human body.
A book-to-plural connection can be made.

(2) The connecting device is used for chemotherapy.
When it is necessary to treat at multiple points, multiple tributary catheters can be connected to one drug solution injecting port or reservoir, so that one drug solution injecting port or reservoir can be used for multiple points. It is possible to deal with the treatment and reduce the burden on the practitioner and the patient.

(3) Since the connecting device connects the tributary catheter using the elastic member at the connecting portion of the tributary catheter,
Multiple tributary catheters can be connected.

(4) The main body of the connecting device can be divided so that the tributary catheter can be easily connected and assembled.

(5) The male and female housings are screw-type fitted, and by tightening them, the elastic member is pressed to fix the tributary catheter.

[Brief description of the drawings]

1 shows a first embodiment of a multi-catheter connector of the present invention, FIG. 1 (A) is an exploded vertical sectional view of the connector, and FIG. 1 (B) is a view after assembly of the connector. It is a longitudinal cross-sectional view and (C) figure is a side view of (B) figure.

FIG. 2 shows a second embodiment corresponding to the connecting device shown in FIG. 1, and FIGS. 2 (A), (B), and (C) are views (A), (B), (C) of FIG. ) It is drawing corresponding to each figure.

FIG. 3 is an explanatory view showing a step of attaching a guide to an elastic member used in the connecting device of the present invention.

FIG. 4 is an explanatory view showing a step of connecting a catheter to the connecting device of the present invention.

FIG. 5 is a schematic explanatory view showing an example of use of the connecting device of the present invention in a human body.

FIG. 6 is a vertical cross-sectional view of a conventional catheter connecting device, showing an example of its use.

[Explanation of symbols]

 10: Connection device 11: Female housing 12: Male housing 13: Tubular guide 14: Elastic member 21: Female jig 22: Male jig 23: Pin 30: Mainstream catheter 40: Tributary catheter 100: Drug injection port

Claims (6)

[Claims] 1. An internal thread is formed on the inner peripheral surface of the front end, and
A cylindrical female housing provided with an inner flange extending inward in the radial direction from the inner peripheral surface of the rear end, a male housing having a male screw threaded on the outer peripheral surface of the rear end screwed into the female screw, and a plurality of tubular bodies And a rear end of the tubular guide protruding from the rear end of the female housing through a hole defined by the inner flange, and The elastic member is inserted into the rear end of the female housing so that the front end is accommodated in the front end of the female housing, and the front end of the tubular guide is accommodated in the rear end of the male housing. When the male screw of the male housing is screwed into the female screw of the female housing and the male and female screws of both housings are relatively tightened,
The multi-catheter connecting device, wherein the elastic member is compression-fixed between a front end surface of the inner flange and a rear end surface of the male housing. 2. The connecting device according to claim 1, wherein each of the front ends of the plurality of tubular guides communicates with a single front end of the male housing. 3. The connecting device according to claim 1, wherein a flange for narrowing down the cover is provided on the outer periphery of the female housing. 4. A small-diameter tubular portion extending from the inner flange of the female housing toward the rear end side in the axial direction is provided, and a flange for narrowing the cover is provided on the outer periphery of the small-diameter tubular portion. The connection device described. 5. An elastic member is inserted from a rear end into a hollow male jig having a partition wall with a hole in the center, and a female jig having a plurality of conducting holes is connected to a rear end of the male jig. The elastic member is fixed in the male and female jig, the tubular guide is inserted into the conductive hole, and the tubular guide is pressed so as to penetrate the elastic member, and the rear end of the tubular guide is the conductive hole. Positioning the tubular guide so that it projects from the rear end and the front end of the tubular guide projects from the hole in the septum; inserting a pin into the tubular guide to remove scraps of the elastic member; Taking out the elastic member holding the tubular guide from the male and female jig and inserting it into the female housing, connecting the male housing to the female housing, the rear end of the tubular guide protruding from the rear end surface of the female housing. And a method for manufacturing a multi-catheter connecting device, wherein the elastic member is compression-fixed in both housings so that the front end of the tubular guide is housed in the rear end of the male housing. 6. An internal thread is formed on the inner peripheral surface of the front end, and
A cylindrical female housing provided with an inner flange extending inward in the radial direction from the inner peripheral surface of the rear end, and a male housing having a male screw threaded on the outer peripheral surface of the rear end that is screwed into the female screw.
It is composed of an elastic member that supports a plurality of tubular guides in a substantially parallel manner with a space therebetween, and when the female and male screws of both housings are relatively tightened, the elastic member is provided with the front end surface of the inner flange and the male housing. A multi-catheter configured to be compressed and fixed between a rear end face, a rear end of the tubular guide protruding from a rear end of the female housing, and a front end of the tubular guide being housed in a rear end of the male housing. Preparing a connecting device, disassembling the male and female housings, taking out an elastic member holding a tubular guide, inserting a plurality of tributary catheters to be respectively connected to predetermined treatment sites into the female housing from its rear end Inserting each tributary catheter protruding from the female housing into each of the tubular guides, and inserting each of the tubular guides into the elastic member. And withdrawing from each tributary catheter, trimming the end of each tributary catheter to a predetermined length with respect to the front end face of the female housing, and fitting the male housing to the female housing to accommodate each trimmed tributary catheter end. A method of using a multi-catheter connecting device comprising screwing and connecting the front end of the male housing to a mainstream catheter.