CN212547085U

CN212547085U - Thrombus crushing and sucking device

Info

Publication number: CN212547085U
Application number: CN202020016168.2U
Authority: CN
Inventors: 刘寅
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2021-02-19
Anticipated expiration: 2030-01-06

Abstract

The utility model provides a broken suction device of thrombus, include: the suction catheter consists of a tube seat, a tube body, a tube seat side cavity and a catheter front end, and the outlet of the injector is connected with the inlet of the tube seat side cavity through the extension tube; the tube seat is provided with a sealing mechanism which can open and close the main cavity of the tube seat; the thrombus crushing wire consists of a screwing handle and a metal core wire, the screwing handle is fixedly connected with the near end of the metal core wire, the far end of the metal core wire is welded with an annular wire, and the outer diameters of the metal core wire and the annular wire are not more than 0.4 mm; the front end of the catheter is provided with symmetrical side holes. The utility model has the advantages as follows: reasonable in design, simple structure, convenient operation's broken suction device of thrombus can clear away great piece thrombus and the non-calcified thrombus that is attached to the blood vessel inner wall fast to help art person to reduce the operation degree of difficulty and then reduce the operation risk in the thrombus suction treatment, effectively reduce the risk of thrombus sudden death.

Description

Thrombus crushing and sucking device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a thrombus crushing and sucking device.

Background

Thrombus is an abnormal substance insoluble in blood circulation, and can block blood vessels to form embolism, so that the life of a patient is threatened in serious cases. Thrombus is usually cleared and treated by a thrombus suction device in clinical operation. The thrombus suction catheter is used for being delivered to a desired position in a blood vessel through the inner cavity of the guide catheter, the using method limits the outer diameter of the thrombus suction catheter, and the catheter is required to have certain pushing performance, and the factors determine the condition that the inner cavity of the thrombus suction catheter is smaller. Most thrombus suction devices on the market at present only have a catheter, and the device with the structure can only clean and suck some thrombus with smaller volume, and can hardly clean larger thrombus and thrombus attached to the inner wall of a blood vessel. In contrast, a thrombus suction catheter with a mechanical rotary cutting device at the head end is developed by one company in the united states, and the product is not used by domestic medical institutions basically because other equipment needs to be additionally configured when the product is used, the use is inconvenient, and the use cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a broken suction device of thrombus has solved among the prior art when performing the operation problem that intravascular bold thrombus and attached to the non-calcification thrombus of vascular inner wall are difficult to clear away.

The technical scheme of the utility model is realized like this:

a thrombus-breaking aspiration device comprising: the suction catheter comprises a tube seat, a tube body, a tube seat side cavity and a catheter front end, and an outlet of the injector is connected with an inlet of the tube seat side cavity through the extension tube; the tube seat is provided with a sealing mechanism capable of opening and closing the main cavity of the tube seat; the thrombus crushing wire consists of a screwing handle and a metal core wire, the screwing handle is fixedly connected with the near end of the metal core wire, the far end of the metal core wire is welded with an annular wire, and the outer diameters of the metal core wire and the annular wire are not more than 0.4 mm; and symmetrical side holes are formed at the front end of the catheter.

Preferably, the sealing mechanism comprises a pressing cap, a spring, a small cap and a sealing rubber gasket, the pressing cap is connected with the small cap through the spring, and the small cap is connected with the sealing rubber gasket.

Preferably, the pipe body is of a three-layer structure, wherein the middle layer is a stainless steel wire layer, and the inner layer and the outer layer are polymer material layers; the stainless steel wire is a net-shaped woven wire or a spring-shaped spiral wire, and the high polymer material is a nylon material.

Preferably, the connection part of the extension tube and the tube seat side cavity is an external luer conical joint, and the connection part of the extension tube and the syringe is an internal luer conical joint.

Preferably, the metal core wire and the annular wire are stainless steel wires or nickel-titanium alloy wires.

Preferably, the side hole on the front end of the catheter is a tapered hole, and the minimum aperture size of the side hole is 0.36-0.40 mm.

The working principle of the utility model is as follows:

when in clinical use, the suction catheter withdraws the guide wire after reaching a treatment position along the inner cavity of the guide tube and the guide wire; pressing a pressing cap on a tube seat of the suction catheter to open a sealing rubber gasket, inserting the annular wire end of the thrombus-breaking wire into an inner cavity of the tube seat through a through hole on the pressing cap, reaching the position of a side hole at the far end of the catheter along the catheter body, and confirming by using an X-ray image; connecting a matched injector with a side cavity of a tube seat through an extension tube, and performing negative pressure suction; under the negative pressure suction and the extrusion of the inner wall of the blood vessel, thrombus enters the side hole of the catheter, and the thrombus with small volume can be directly pumped out of the body through the inner cavity of the catheter; the manual rotary twisting handle drives the annular wire to rotate by the metal core wire, cuts and crushes large thrombi attached to the inner wall of the blood vessel, so that the large thrombi can enter the inner cavity of the catheter and be sucked out of the body.

The utility model has the advantages that:

reasonable in design, simple structure, convenient operation's broken suction device of thrombus can clear away great piece thrombus and the non-calcified thrombus that is attached to the blood vessel inner wall fast to help art person to reduce the operation degree of difficulty and then reduce the operation risk in the thrombus suction treatment, effectively reduce the risk of thrombus sudden death.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the thrombus crushing and aspirating device of the present invention;

FIG. 2 is a schematic view of the construction of the thrombectomy catheter of FIG. 1;

FIG. 3 is a sectional view showing the construction of a stem portion of the thrombus extraction catheter of FIG. 2;

FIG. 4 is a schematic view of the construction of the thrombus-breaking filament of FIG. 1;

fig. 5 is a schematic structural view of the extension pipe in fig. 1.

In the figure:

1. the suction catheter comprises a suction catheter 2, a thrombus breaking wire 3, an extension tube 4, an injector 5 and a catheter front end;

11. the pipe seat 12, the pipe body 13, the pipe seat side cavity 14, the pressing cap 15, the spring 16, the small cap 17 and the sealing rubber gasket; 21. a screwing handle 22, a metal core wire 23 and a ring wire; 31. male luer taper, 32, female luer taper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As can be seen from the embodiments shown in fig. 1 to 5, the thrombus-breaking suction device of the present invention comprises: the thrombus crushing device comprises a suction catheter 1, a thrombus crushing wire 2, an extension tube 3 and an injector 4, wherein the suction catheter 1 consists of a tube seat 11, a tube body 12, a tube seat side cavity 13 and a catheter front end 5, and an outlet of the injector 4 is connected with an inlet of the tube seat side cavity 13 through the extension tube 3; the tube seat 11 is provided with a sealing mechanism capable of opening and closing the main cavity of the tube seat, and can be used as a channel for the thrombus-breaking filaments 2 to enter the inner cavity of the tube seat 11, and the inner cavity of the tube seat 11 is communicated with the side cavity 13 of the tube seat and is used as a thrombus suction channel; the thrombus crushing wire 2 consists of a screwing handle 21 and a metal core wire 22, the screwing handle 21 is fixedly connected with the near end of the metal core wire 22, and the far end of the metal core wire 22 is welded with an annular wire 23, so that the outer diameter of the metal core wire 22 and the annular wire 23 is not more than 0.4 mm in order to avoid the influence of the metal core wire 22 and the annular wire 23 on a thrombus suction channel; symmetrical side holes are arranged at the front end 5 of the catheter.

The sealing mechanism comprises a pressing cap 14, a spring 15, a small cap 16 and a sealing rubber gasket 17, wherein the pressing cap 14 is connected with the small cap 16 through the spring 15, and the small cap 16 is connected with the sealing rubber gasket 17. The sealing rubber gasket 17 can be opened and closed by the depression and restoration of the pressing cap 14, and the sealing rubber gasket 17 can prevent the outflow of blood during operation and prevent leakage during negative pressure suction.

In order to ensure the lifting performance and the supporting performance of the suction catheter 1, the catheter body 12 is of a three-layer structure, wherein the middle layer is a stainless steel wire layer, and the inner layer and the outer layer are polymer material layers; the stainless steel wire is a net-shaped woven wire or a spring-shaped spiral wire, and the high polymer material is a nylon material.

The connection part of the extension tube 3 and the tube seat side cavity 13 is an external luer conical joint 31, and the connection part of the extension tube 3 and the injector 4 is an internal luer conical joint 32.

The metal core wire 22 and the annular wire 23 are made of stainless steel wire or nitinol wire, and the annular wire 23 may be one or more.

The front end 5 of the catheter is made of a high polymer material containing developing substances, the upper side hole is a conical hole and is matched with the thrombus crushing wire 2 to pass through, and the minimum aperture of the side hole is 0.36-0.40 mm.

The working principle of the thrombus crushing and sucking device is as follows:

when in clinical use, the suction catheter 1 withdraws the guide wire after reaching the treatment position along the guide catheter inner cavity and the guide wire; pressing a pressing cap 14 on a tube seat 11 of the suction catheter 1 to open a sealing rubber gasket 17, inserting the end of an annular wire 23 of the thrombus-breaking wire 2 into the inner cavity of the tube seat 11 through a through hole on the pressing cap 14, reaching the position of a side hole at the distal end 5 of the catheter along a tube body 12, and confirming by using an X-ray image; connecting a matched injector 4 with a tube seat side cavity 13 through an extension tube 3, and performing negative pressure suction; under the negative pressure suction and the extrusion of the inner wall of the blood vessel, thrombus enters the side hole of the catheter, and the thrombus with small volume can be directly pumped out of the body through the inner cavity of the catheter; the manual rotation twists the handle 21 and drives the annular silk 23 by metal core wire 22 and rotate, cuts the breakage to attaching to blood vessel inner wall and bold thrombus (can adjust the position that the thrombus cut through rotatory tube socket 11), makes it can get into the pipe inner chamber and is sucked out of the body.

To sum up, the utility model relates to a rationally, simple structure, convenient operation's broken suction device of thrombus can clear away great piece thrombus and the non-calcification thrombus that adheres to the blood vessel inner wall fast to help art person to reduce the operation degree of difficulty and then reduce the operation risk in the thrombus suction treatment, effectively reduce the risk of thrombus sudden death.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thrombus-breaking aspiration device, comprising: the thrombus-breaking catheter comprises a suction catheter (1), thrombus-breaking wires (2), an extension tube (3) and an injector (4), wherein the suction catheter (1) consists of a tube seat (11), a tube body (12), a tube seat side cavity (13) and a catheter front end (5), and an outlet of the injector (4) is connected with an inlet of the tube seat side cavity (13) through the extension tube (3); the tube seat (11) is provided with a sealing mechanism capable of opening and closing the main cavity of the tube seat; the thrombus crushing wire (2) consists of a screwing handle (21) and a metal core wire (22), the screwing handle (21) is fixedly connected with the near end of the metal core wire (22), an annular wire (23) is welded at the far end of the metal core wire (22), and the outer diameters of the metal core wire (22) and the annular wire (23) are not more than 0.4 mm; symmetrical side holes are arranged at the front end (5) of the catheter.

2. A thrombus-breaking suction device according to claim 1, characterized in that the sealing mechanism comprises a pressing cap (14), a spring (15), a small cap (16) and a sealing rubber pad (17), the pressing cap (14) is connected with the small cap (16) through the spring (15), and the sealing rubber pad (17) is connected with the small cap (16).

3. A thrombus crushing and sucking device according to claim 1, wherein the tube body (12) has a three-layer structure, the middle layer is a stainless steel wire layer, and the inner layer and the outer layer are polymer material layers; the stainless steel wire is a net-shaped woven wire or a spring-shaped spiral wire, and the high polymer material is a nylon material.

4. A thrombus-breaking suction device according to claim 1, wherein the connection of the extension tube (3) and the tube holder-side chamber (13) is a male luer taper (31), and the connection of the extension tube (3) and the syringe (4) is a female luer taper (32).

5. A thrombus-breaking suction device according to claim 1, wherein the metal core wire (22) and the ring wire (23) are stainless steel wires or nitinol wires.

6. A thrombus breaking and suction device according to claim 1, characterized in that the side holes on the front end (5) of the catheter are tapered holes, and the minimum hole size of the side holes is 0.36-0.40 mm.