CN219148953U

CN219148953U - Double-cavity micro-catheter

Info

Publication number: CN219148953U
Application number: CN202223354505.7U
Authority: CN
Inventors: 姜贤男; 潘国立
Original assignee: Shanghai Kindly Medical Devices Co ltd
Current assignee: Shanghai Kindly Medical Devices Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-09
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a double-cavity micro-catheter which comprises a telescopic tube, a main tube, a threaded piston head and a catheter main body, wherein the catheter main body is arranged in the telescopic tube, two ends of the catheter main body are respectively provided with a liquid discharging head and a threaded piston head, the threaded piston head is rotationally connected with the catheter main body, the main tube is rotationally connected with the end part of the telescopic tube, one side of the main tube is provided with a secondary tube, the main tube is connected with the catheter main body through a connecting tube, the end part of the main tube is provided with a rotatable threaded piston head, the catheter main body is arranged in a telescopic cavity of the telescopic tube, the threaded piston head can be in threaded transmission connection with the inner wall of the telescopic cavity, the threaded piston head is connected with a connecting frame at the end part of the connecting tube, the connecting tube is connected with the main tube, and the end part of the main tube is rotationally connected with a port of the telescopic tube.

Description

Double-cavity micro-catheter

Technical Field

The utility model relates to the related field of double-cavity micro-catheters, in particular to a double-cavity micro-catheter.

Background

The catheter is used for medical intubation and guide, and heart catheterization is a technology of inserting the catheter from peripheral blood vessels and delivering the catheter to all parts of heart cavities and large blood vessels, so as to obtain information, achieve the purposes of examination and diagnosis, and also can carry out certain treatment measures;

for example, patent publication number CN214343885U (adjustable bend double lumen microcatheter assembly): including the double-chamber microcatheter and angle adjustment mechanism, the double-chamber microcatheter include straight tube section and integrated into one piece set up in the distal end of straight tube section and the branch pipe section of deformation of buckling, be equipped with mutually independent first seal wire chamber and second seal wire chamber in the double-chamber microcatheter, the both ends in first seal wire chamber link up the proximal end of straight tube section and the end of branch pipe section, the both ends in second seal wire chamber link up the distal end of straight tube section and straight tube section lateral wall is close to proximal end department, angle adjustment mechanism is used for adjusting the branch pipe section for the angle of buckling of straight tube section. The advantages are that: the device has reasonable design and convenient operation, can lead the guide wire to easily enter the branch artery, reduces the operation difficulty and shortens the operation time;

at present, the catheter needs manual introduction in the introduction process, and the introduction process is not easy to control due to the stability of hand control, so that the introduction process is not stable enough, the introduction position is easy to find accurately, fine adjustment is inconvenient, the common catheter cannot be introduced in a double-cavity mode, and the lesion part cannot be introduced in a double-guide matching mode, so that the operability is low.

Disclosure of Invention

The utility model aims to provide a double-cavity micro-catheter, which aims to solve the problems that in the introduction process of the catheter proposed in the background technology, manual introduction is needed, the introduction process is not stable enough due to the fact that the stability of hand control is not easy to control, the introduction position is easy to find accurately, fine adjustment is inconvenient, the common catheter cannot be introduced in a double-cavity mode, and the operation is low because the double-guide is not matched with the introduction of a lesion.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a two-chamber microcatheter, includes flexible pipe, main pipe, screw thread piston head and pipe main part, the inside at flexible pipe is established to the pipe main part, the both ends of pipe main part are equipped with fluid-discharge head and screw thread piston head respectively, and screw thread piston head and pipe main part rotate to be connected, the main pipe is connected with the tip rotation of flexible pipe, one side of main pipe is equipped with the accessory pipe, the main pipe passes through the connecting pipe with the pipe main part and is connected.

In a further embodiment, the end of the telescopic tube is provided with a bearing, and the main tube is rotatably connected with the bearing.

In a further embodiment, a secondary pipe joint is arranged on one side of the main pipe, one end of the secondary pipe is connected with the secondary pipe joint, and a second joint is arranged at the end of the secondary pipe.

In a further embodiment, a first joint is arranged at the end of the main pipe, and the main pipe is connected with the connecting pipe in a plugging and fixing mode.

In a further embodiment, one end of the connecting pipe is provided with a connecting frame, the side of the end face of the threaded piston head is provided with a jack, the middle part of the end face of the threaded piston head is provided with a liquid guide port, and the connecting frame is inlaid and fixed with the jack.

In a further embodiment, a telescopic cavity is arranged in the telescopic pipe, an inner thread is arranged on the inner cavity wall of the telescopic cavity, an outer thread is arranged on the outer side of the threaded piston head, and the threaded piston head is in threaded transmission connection with the telescopic cavity.

Compared with the prior art, the utility model has the beneficial effects that:

1. the end part of the catheter main body is provided with the rotatable threaded piston head, the catheter main body is arranged in the telescopic cavity of the telescopic pipe, the threaded piston head can be in threaded transmission connection with the inner wall of the telescopic cavity, the threaded piston head is connected with the connecting frame at the end part of the connecting pipe, the connecting pipe is connected with the main pipe, the end part of the main pipe is in rotary connection with the port of the telescopic pipe, the main pipe can be manually controlled to rotate, the threaded piston head is driven by the connecting pipe, the threaded piston head and the telescopic cavity are in threaded transmission, the catheter main body can be automatically controlled to stretch out and draw back, the position of the catheter main body is regulated, the catheter main body can be fed in a threaded control mode, and the feeding mode is accurate, and fine adjustment can be carried out on the entering position of the catheter main body.

2. The main pipe of the utility model is provided with the auxiliary pipe joint at one side, one end of the auxiliary pipe joint is provided with the auxiliary pipe, and two liquid medicines can be introduced into the main pipe of the catheter through the matching of the auxiliary pipe and the main pipe, so that the catheter can be operated by double-cavity diversion, and the functionality of the catheter is increased.

Drawings

FIG. 1 is a schematic diagram of a dual-lumen microcatheter according to the present utility model;

FIG. 2 is a schematic diagram of the main pipe and the connecting pipe according to the present utility model;

FIG. 3 is a front view of a threaded piston head of the present utility model;

FIG. 4 is a front view of the bearing of the present utility model;

fig. 5 is a schematic structural view of the portion a of the present utility model.

In the figure: 1. a liquid discharge head; 2. a telescopic tube; 3. a telescopic chamber; 4. a bearing; 5. a main pipe; 6. a first joint; 7. a secondary pipe; 8. a second joint; 9. a threaded piston head; 10. a secondary pipe joint; 11. a catheter body; 12. a connecting frame; 13. a jack; 14. a liquid guide port; 15. and (5) connecting pipes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, an embodiment of the present utility model is provided: the utility model provides a double-cavity microcatheter, includes flexible pipe 2, main pipe 5, screw thread piston head 9 and pipe main part 11, and pipe main part 11 establishes in the inside of flexible pipe 2, and the both ends of pipe main part 11 are equipped with fluid-discharge head 1 and screw thread piston head 9 respectively, and screw thread piston head 9 and pipe main part 11 rotate to be connected, and main pipe 5 rotates to be connected with the tip of flexible pipe 2, and one side of main pipe 5 is equipped with accessory pipe 7, and main pipe 5 passes through connecting pipe 15 with pipe main part 11 to be connected.

The liquid discharge head 1 is used for discharging liquid in the catheter main body 11, the threaded piston head 9 is used for being in threaded transmission connection with the inner wall of the telescopic tube 2, the main pipe 5 and the auxiliary pipe 7 are used for double-cavity liquid guide, and the connecting pipe 15 is used for connecting the main pipe 5 with the catheter main body 11.

Further, the end of the telescopic tube 2 is provided with a bearing 4, and the main tube 5 is rotatably connected with the bearing 4, and is conveniently rotatably connected with the main tube 5 through the bearing 4.

Further, one side of the main pipe 5 is provided with a secondary pipe joint 10, and one end of the secondary pipe 7 is connected with the secondary pipe joint 10, and the end part of the secondary pipe 7 is provided with a second joint 8, so that the secondary pipe is conveniently connected with an external guiding-in quantitative cylinder through the second joint 8.

Further, a first joint 6 is arranged at the end of the main pipe 5, the main pipe 5 is fixedly connected with the connecting pipe 15 in a plugging manner, and the threaded piston head 9 can be driven to rotate by the main pipe 5 through the connecting pipe 15.

Further, one end of the connecting pipe 15 is provided with a connecting frame 12, the side of the end face of the threaded piston head 9 is provided with a jack 13, the middle of the end face of the threaded piston head 9 is provided with a liquid guide port 14, the connecting frame 12 is inlaid and fixed with the jack 13, the connecting frame 12 is inlaid conveniently through the jack 13, and liquid is led in through the liquid guide port 14.

Further, the inside of flexible pipe 2 is equipped with flexible chamber 3, and flexible chamber 3's inner chamber wall is equipped with the internal thread, and the outside of screw thread piston head 9 is equipped with the external screw thread, and screw thread piston head 9 and flexible chamber 3 screw thread transmission are connected, and this kind of design can adjust screw thread piston head 9 and stretch out and draw back in flexible chamber 3.

Working principle: when the catheter is used, the catheter main body 11 is inserted into a blood vessel in a manual control mode, the main tube 5 is manually controlled to rotate in the bearing 4, the main tube 5 drives the threaded piston head 9 to rotate through the connecting tube 15 and the connecting frame 12 at the end part of the main tube, the threaded piston head 9 is in threaded transmission with the inner wall of the telescopic cavity 3, the threaded piston head 9 drives the catheter main body 11 to stretch in the telescopic cavity 3, the catheter main body 11 is accurately introduced into the blood vessel, the position of the catheter main tube 11 can be finely adjusted, the quantitative liquid medicine tube can be connected through the first connector 6 and the second connector 8, double-cavity simultaneous liquid guiding can be carried out through the main tube 5 and the auxiliary tube 7, and the catheter main tube and the auxiliary tube can be mutually matched for use.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a two-chamber microcatheter, includes flexible pipe (2), main pipe (5), screw thread piston head (9) and pipe main part (11), its characterized in that: the novel telescopic pipe is characterized in that the pipe body (11) is arranged in the telescopic pipe (2), the liquid discharging heads (1) and the threaded piston heads (9) are respectively arranged at two ends of the pipe body (11), the threaded piston heads (9) are rotationally connected with the pipe body (11), the main pipe (5) is rotationally connected with the end part of the telescopic pipe (2), the auxiliary pipe (7) is arranged on one side of the main pipe (5), and the main pipe (5) is connected with the pipe body (11) through the connecting pipe (15).

2. A dual lumen microcatheter according to claim 1 wherein: the end part of the telescopic pipe (2) is provided with a bearing (4), and the main pipe (5) is rotationally connected with the bearing (4).

3. A dual lumen microcatheter according to claim 1 wherein: one side of the main pipe (5) is provided with an auxiliary pipe joint (10), one end of the auxiliary pipe (7) is connected with the auxiliary pipe joint (10), and the end part of the auxiliary pipe (7) is provided with a second joint (8).

4. A dual lumen microcatheter according to claim 1 wherein: the end part of the main pipe (5) is provided with a first joint (6), and the main pipe (5) is connected with the connecting pipe (15) in a plug-in fixation mode.

5. A dual lumen microcatheter according to claim 1 wherein: one end of the connecting pipe (15) is provided with a connecting frame (12), the side of the end face of the threaded piston head (9) is provided with a jack (13), the middle part of the end face of the threaded piston head (9) is provided with a liquid guide port (14), and the connecting frame (12) is inlaid and fixed with the jack (13).

6. A dual lumen microcatheter according to claim 1 wherein: the telescopic pipe is characterized in that a telescopic cavity (3) is arranged in the telescopic pipe (2), an inner thread is arranged on the inner cavity wall of the telescopic cavity (3), an external thread is arranged on the outer side of the threaded piston head (9), and the threaded piston head (9) is in threaded transmission connection with the telescopic cavity (3).