Retractable thrombus removal catheter

Abstract

The utility model discloses a retractable thrombus removing catheter which comprises a thrombus removing catheter body, a retractable control end and a retractable head mechanism are arranged on the thrombus removing catheter body, a catheter main body is arranged on the thrombus removing catheter body, and the retractable control end and the retractable head mechanism are arranged at one end of the catheter main body. The telescopic control end is provided with a telescopic handle end, a telescopic handle is arranged in the telescopic handle end, the telescopic handle and the telescopic handle end are installed in a matched mode, the telescopic head mechanism comprises a catheter body and a telescopic head, a conical spatula body is arranged in the telescopic head, and the conical top of the conical spatula body is fixedly connected with the end of the guide wire. The thrombus removing catheter body has the advantages that the thrombus removing catheter body is simple in structure and convenient to use, and the thrombus in the blood vessel can be visually cleaned at a fixed point.

Description

Technical Field

[0001] This utility model relates to the technical field of thrombus removal devices, specifically a retractable thrombus removal catheter. Background Technology

[0002] A thrombus is a small mass that forms on the surface of blood vessels in the cardiovascular system at sites of rupture or repair. In variable fluid-dependent thrombi, thrombi consist of insoluble fibrin, deposited platelets, accumulated white blood cells, and trapped red blood cells.

[0003] Thrombosis is a multifactorial process involving the interaction and mutual influence of a group of genetic and environmental factors. The most common characteristics of thrombosis patients in clinical practice include familial inheritance, recurrent episodes, severe symptoms, abnormal thrombus formation sites, and a trend towards younger age of onset.

[0004] Objective evidence is needed to rule out arterial or venous thrombosis or thromboembolism. Angiography is the reference standard for diagnosis, but ultrasound, performed with skilled technique, can also examine superficial blood vessels and the heart.

[0005] In patients with spontaneous deep vein thrombosis confirmed by venography, 25%–50% have a genetic predisposition. A congenital defect in the anticoagulation mechanism (such as factor V anti-activated protein C, hyperhomocysteinemia, protein C deficiency, protein S deficiency, antithrombin deficiency, or impaired fibrinolysis) combined with a thrombotic stimulus (such as surgery, pregnancy, use of oral contraceptives, or antiphospholipid antibodies) is sufficient to cause venous thromboembolism. Patients with a history of multiple thrombosis sites in the past experience a significantly increased frequency and severity of attacks compared to those with a single thrombus.

[0006] Antithrombotic therapy utilizes thrombolytic drugs, antiplatelet drugs, and anticoagulants. When developing an antithrombotic treatment strategy, thrombolytic therapy should be considered first, as it can remove an existing blood clot. Antithrombotic treatment should be diversified, depending on whether the affected area is the venous or arterial circulation system, the extent and location of vascular involvement, the extent of thrombus expansion, the risk of embolism or recurrence, and the relative benefits and risks of antithrombotic therapy versus bleeding.

[0007] Currently, the equipment used for thrombus removal is not ideal, resulting in incomplete thrombus removal. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Utility Model Content

[0008] The purpose of this invention is to provide a constrictive thrombus removal catheter that is simple in structure, easy to use, and capable of visually clearing thrombi inside blood vessels, thereby solving the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a retractable thrombus removal catheter, comprising a thrombus removal catheter body, a telescopic control end, and a telescopic head mechanism, wherein the thrombus removal catheter body is provided with a catheter main body, and one end of the catheter main body is provided with a telescopic control end and a telescopic head mechanism;

[0010] The telescopic control end is provided with a telescopic handle end, one end of which is integral with one end of the conduit body, and a telescopic handle is provided inside the telescopic handle end. The telescopic handle is installed in conjunction with the telescopic handle end.

[0011] The telescopic head mechanism includes a catheter body and a telescopic head. The telescopic head has a conical scraper body inside, and the cone apex of the conical scraper body is fixedly connected to the end of the guide wire. The other end of the conical scraper body is provided with a viewing lens.

[0012] Preferably, the catheter body is a transparent catheter, and guidewire supports are provided at equal intervals inside the catheter body. An annular ring is provided outside the guidewire supports, and cross supports are symmetrically provided on both sides of the annular ring. A guidewire mounting hole is provided in the center of the cross supports, and a fan-shaped groove is provided outside the guidewire mounting hole, which penetrates the catheter body.

[0013] The outer wall of the catheter body near one end is provided with a negative pressure port, which is an integral structure with the catheter body and is connected to the catheter body.

[0014] Preferably, one end of the telescopic handle is provided with an anti-dislodgement retaining ring, and the other end of the telescopic handle is provided with a guide wire, which is disposed on a guide wire support inside the catheter body.

[0015] Preferably, the telescopic head mechanism has a support bracket inside the end where the guide tube body connects to the telescopic head, and a guide wire mounting hole is provided in the center of the support bracket, with a star-shaped bracket outside the guide wire mounting hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) A cross-shaped support is symmetrically provided on both sides of the ring. A guide wire installation hole is provided in the center of the cross-shaped support. A fan-shaped groove is provided outside the guide wire installation hole. The fan-shaped groove runs through the catheter body. The cross-shaped support not only provides good support for the guide wire and avoids the guide wire from causing wear on the inner wall of the catheter body, but also the fan-shaped groove inside the cross-shaped support facilitates the flow of thrombi.

[0018] (2) A negative pressure port is provided on the outer wall of the catheter body near one end. The negative pressure port is an integral structure with the catheter body and is connected to the catheter body. A sealed rubber plug is provided at the negative pressure port. The negative pressure port can be connected to a negative pressure suction device to remove the treated thrombus through negative pressure suction.

[0019] (3) The telescopic handle is provided inside the telescopic handle end. The telescopic handle is installed in conjunction with the telescopic handle end. One end of the telescopic handle is provided with an anti-dislodgement ring, and the other end of the telescopic handle is provided with a guide wire. The guide wire is set on the guide wire support inside the catheter body. The telescopic handle can move within a certain range and clean the thrombus by moving back and forth and scraping.

[0020] (4) The telescopic head mechanism includes the catheter body and the telescopic head. The telescopic head is equipped with a conical scraper body inside. The cone tip of the conical scraper body is fixedly connected to the end of the guidewire. The conical scraper body is like a small cup with a connecting steel wire in the center inside, which can scrape and remove the thrombus.

[0021] (5) The thrombus removal catheter has a simple structure and is easy to use. It can visualize and clean up thrombi inside blood vessels. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the thrombus removal catheter body structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the telescopic control end structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the telescopic head mechanism of this utility model;

[0025] Figure 4 This is a cross-sectional view of the telescopic head mechanism of this utility model;

[0026] Figure 5 This is a side view of the guide wire support of this utility model;

[0027] Figure 6 This is the front view of the guide wire support of this utility model.

[0028] In the diagram: 1. Thrombosis removal catheter body; 2. Catheter body; 3. Negative pressure port; 4. Telescopic control end; 5. Telescopic head mechanism; 6. Telescopic handle end; 7. Telescopic handle; 8. Telescopic head; 9. Guidewire; 10. Support bracket; 11. Conical scraper body; 12. Viewing lens; 13. Guidewire support; 14. Cross support. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6 This utility model provides a technical solution: a retractable thrombus removal catheter, including a thrombus removal catheter body 1, a telescopic control end 4, and a telescopic head mechanism 5. The thrombus removal catheter body 1 is provided with a catheter body 2, which is a transparent catheter. Inside the catheter body 2, guidewire supports 13 are provided at equal intervals. An annular ring is provided on the outside of the guidewire supports 13. Cross supports 14 are symmetrically provided on both sides of the annular ring. A guidewire mounting hole is provided in the center of the inside of the cross supports 14. A fan-shaped groove is provided outside the guidewire mounting hole, and the fan-shaped groove penetrates the catheter body 2. The cross-shaped supports not only provide good support for the guidewire and prevent the guidewire from causing wear on the inner wall of the catheter body 2, but also facilitate the flow of thrombi through the fan-shaped groove inside the cross supports 14.

[0031] The outer wall of the catheter body 2 near one end is provided with a negative pressure port 3. The negative pressure port 3 is an integral structure with the catheter body 2 and is connected to the catheter body 2. A sealing rubber plug is provided at the negative pressure port 3. The negative pressure port 3 can be connected to a negative pressure suction device to remove the treated thrombus through negative pressure suction.

[0032] One end of the catheter body 2 is provided with a telescopic control end 4 and a telescopic head mechanism 5. The telescopic control end 4 is provided with a telescopic handle end 6. One end of the telescopic handle end 6 is an integral structure with one end of the catheter body 2. The telescopic handle end 6 is provided with a telescopic handle 7 inside. The telescopic handle 7 is installed in conjunction with the telescopic handle end 6. One end of the telescopic handle 7 is provided with an anti-dislodgement ring. The other end of the telescopic handle 7 is provided with a guidewire 9. The guidewire 9 is set on the guidewire support inside the catheter body 2. The telescopic handle 7 can move within a certain range and clean the thrombus by scraping it back and forth.

[0033] The telescopic head mechanism 5 includes a catheter body 2 and a telescopic head 8. The telescopic head 8 has a conical scraper body 11 inside. The cone tip of the conical scraper body 11 is fixedly connected to the end of the guidewire. The conical scraper body 11 is like a small cup with a connecting steel wire in the center inside, which can scrape and remove the thrombus.

[0034] The other end of the conical scraper body 11 is provided with a viewing lens 12. The end of the telescopic head mechanism 5 where the guide tube body 2 connects to the telescopic head 8 is provided with a support bracket 10. The center of the support bracket 10 is provided with a guide wire mounting hole, and the outside of the guide wire mounting hole is a cross-shaped bracket.

[0035] Instructions for use: Insert one end of the thrombus removal catheter body 1 into the body. Connect a negative pressure aspirator to the negative pressure port 3 on the outside of the catheter body 2. The viewing lens 12 at the end of the catheter body 2 monitors the inside of the blood vessel in real time. When the viewing lens 12 detects a thrombus inside the blood vessel, stop after the end of the catheter body 2 penetrates into the thrombus. Push the telescopic handle 7 into the telescopic handle end 6. The telescopic head 8 at one end of the guide wire 9 inside the telescopic handle 7 is pushed out. The telescopic head 8 separates from one end of the catheter body 2 and pauses for 3-4 seconds. Then, pull the guide wire 9 with the telescopic handle 7 to return the telescopic head 8 to its original position. At this time, the telescopic head 8 carries part of the thrombus into the end of the catheter body 2. The negative pressure aspirator is activated to suck the thrombus inside the catheter body 2 into the storage bottle. Repeat the above process.

[0036] The thrombus removal catheter body 1 has a simple structure and is easy to use, enabling visualized and targeted removal of thrombi inside blood vessels.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable thrombectomy catheter comprising a thrombectomy catheter body (1), a telescopic control handle (4), a telescopic head mechanism (5), characterized in that: The thrombectomy catheter body (1) is provided with a catheter body (2), one end of the catheter body (2) is provided with a telescopic control end (4) and a telescopic head mechanism (5); the telescopic control end (4) is provided with a telescopic handle end (6), one end of the telescopic handle end (6) is an integral structure with one end of the catheter body (2), the telescopic handle end (6) is internally provided with a telescopic handle (7), and the telescopic handle (7) is installed in cooperation with the telescopic handle end (6); The telescopic head mechanism (5) comprises the catheter body (2) and a telescopic head (8), the telescopic head (8) is internally provided with a conical scraper body (11), the top of the conical scraper body (11) is fixedly connected with the end of the guide wire, and the other end of the conical scraper body (11) is provided with a visible lens (12).

2. A retractable thrombectomy catheter according to claim 1, characterized in that: The catheter body (2) is a transparent catheter, and the catheter body (2) is internally provided with guide wire supports (13) at equal intervals, the guide wire supports (13) are externally provided with annular rings, the two sides of the annular rings are symmetrically provided with cross supports (14), the guide wire supports (14) are internally provided with guide wire mounting holes, and the guide wire mounting holes are externally provided with fan-shaped grooves which penetrate the catheter body (2); The outer wall of the catheter body (2) near one end is provided with a negative pressure port (3), the negative pressure port (3) is an integral structure with the catheter body (2), and the negative pressure port (3) is in communication with the catheter body (2).

3. The retractable thrombectomy catheter of claim 1, wherein: One end of the telescopic handle (7) is provided with an anti-falling ring, and the other end of the telescopic handle (7) is provided with a guide wire (9), the guide wire (9) is arranged on the guide wire support in the catheter body (2).

4. The retractable thrombectomy catheter of claim 1, wherein: The end, at which the catheter body (2) and the telescopic head (8) are connected, of the telescopic head mechanism (5) is internally provided with a supporting support (10), the supporting support (10) is internally provided with a guide wire mounting hole, and the guide wire mounting hole is externally a Chinese character type support.

Images