CN214908661U

CN214908661U - Transcatheter aortic valve replacement transvascular valve-crossing auxiliary device

Info

Publication number: CN214908661U
Application number: CN202120258273.1U
Authority: CN
Inventors: 孟自力; 孟嘉天; 张志华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-11-30
Anticipated expiration: 2031-01-29

Abstract

The utility model belongs to the technical field of medical equipment, a transductal aortic valve replacement valve crossing auxiliary device is disclosed, including crossing valve pipe, crossing valve seal wire and superhard seal wire and all wearing to establish in crossing the valve pipe, crossing valve pipe one end and being connected with strain release sleeve pipe, strain release sleeve pipe free end is connected with the joint, the one end of crossing valve pipe that keeps away from strain release sleeve pipe is set to bullet shape, crosses the valve pipe and includes the pipe body, and the inboard of pipe body is worn to be equipped with the sacculus pipe, and the pipe body is equipped with the expansion portion, and the expansion portion has elasticity, and the expansion portion is made by medical silicon rubber material, and the sacculus pipe is equipped with the sacculus; a convex block is arranged at one end of the sacculus tube close to the strain release sleeve, a groove is arranged at one end of the catheter body close to the strain release sleeve, and the groove and the convex block are arranged in a matched mode; the utility model solves the problem that the balloon expansion and valve release can not be completed at one time in the prior art, and is suitable for transcatheter aortic valve replacement.

Description

Transcatheter aortic valve replacement transvascular valve-crossing auxiliary device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a transcatheter aortic valve replacement transvalvular auxiliary device.

Background

Aortic Stenosis (AS) is a progressive valvular heart disease mainly caused by sequelae of rheumatic fever, congenital abnormalities of aortic valve structures, or calcification of the senile aortic valve. Patients may be asymptomatic during the compensation period, and patients with severe stenosis often have lassitude, dyspnea (exertional or paroxysmal), angina pectoris, vertigo or syncope, or even sudden death. The incidence of aortic stenosis increases with age, and the prognosis is extremely poor once clinical symptoms appear. The incidence of AS is about 2% in people aged 65 and above, and about 4% in people aged 85 and above. Aortic Valve Replacement (SAVR) is an effective treatment for severe AS during open chest surgery, and patients of about 1/3 are unable to receive SAVR surgery due to advanced age, frailty or other factors. The Transcatheter Aortic Valve Replacement (TAVR) adopts a minimally invasive cardiac interventional catheter technique, is manually intervened in cardiac valve replacement, has the advantages of no chest opening, low risk, simple and convenient operation, small wound, quick recovery, few complications and the like, and is particularly suitable for patients with surgical contraindications or high risk of surgical operations. At present, TAVR surgery is actively carried out in large-provincial-level hospital cardiology department, and has higher requirements on the operation of operators. The guide wire crossing the narrow aortic valve in the TAVR operation is not a simple operation, sometimes needs to be tried repeatedly, greatly increases the operation time, and may cause some operation complications, thereby affecting the operation success rate.

In order to solve the above problems, chinese patent (patent publication No. CN210963485U) discloses a transvalvular auxiliary device for transcatheter aortic valve replacement surgery, comprising a transvalvular angiography catheter and a transvalvular guide wire inserted into the transvalvular angiography catheter; the cross-valve radiography conduit comprises a conduit body woven by a steel wire mesh, an arc-shaped tip fixedly arranged at the head end of the conduit body, a strain release sleeve fixedly sleeved on the outer wall of the tail end of the conduit body and a connector fixedly arranged at the tail end of the strain release sleeve; the cross-petal guide wire comprises a guide wire body and three annular branches fixedly arranged on the axial surface of the head end of the guide wire body, and the three annular branches are mutually 120 degrees by taking the axial surface of the head end of the guide wire body as a reference surface and form a horn-shaped structure body in an enclosing mode.

According to the scheme, a horn-shaped structure body formed by three annular branches at the head of the guide wire is convenient for a doctor to carry out valve crossing, but the defect that the valve-releasing catheter frequently enters and exits after the balloon is expanded still exists, the catheter firstly conveys the balloon to a specified position, the catheter exits after the balloon is filled and then the valve is exhausted, the catheter exits after the balloon is filled and then the valve exits, the catheter needs to repeatedly enter and exit in order to complete the process, the operation time is greatly increased, and operation complications possibly caused by the repeated entering and exiting of the catheter are possibly caused, so that the operation success is influenced; there is therefore a need for a device that can accomplish balloon expansion and release of the valve in a single pass.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a transcatheter aortic valve replacement strides valve auxiliary device to solve the problem that prior art can't once only accomplish the sacculus expansion and release valve.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a basic technical scheme is: a transcatheter aortic valve replacement transosseous auxiliary device comprises a transosseous catheter, a transosseous guide wire and a superhard guide wire, wherein the transosseous guide wire and the superhard guide wire are all arranged in the transosseous catheter in a penetrating mode, one end of the transosseous catheter is connected with a strain release sleeve, the free end of the strain release sleeve is connected with a joint, the transosseous catheter comprises a catheter body, the inner side of the catheter body is connected with a sacculus tube in a penetrating mode, the catheter body is provided with an expansion portion, the expansion portion has elasticity, and the sacculus tube is provided with a sacculus.

The principle of the basic technical scheme is as follows: after the valve crossing guide wire enters the left ventricle, the inserted left coronary artery catheter is exchanged into a valve crossing catheter, the valve crossing guide wire is withdrawn after the valve crossing guide wire is finished, the superhard guide wire is guided into the balloon tube through the valve crossing catheter, the balloon tube is loaded with the balloon, the valve is loaded outside the expansion part of the catheter body, the valve crossing catheter is pulled to a designated position through the superhard guide wire, the balloon on the balloon tube is conveyed to the valve opening to be full, the valve of a patient is propped open, the balloon exhausts air quickly after the valve crossing guide wire is finished and returns to the initial position, then the balloon tube and the catheter body move together to convey the new valve to the same position, the balloon is full to release the new valve, and the balloon exhausts air quickly after the valve crossing guide wire is finished and returns.

The beneficial effects of the basic technical scheme are as follows: through the matched use of the catheter body and the balloon tube, the balloon expansion to the release valve is completed at one time.

Preferably, the end of the valve-spanning catheter away from the strain relief sleeve is bullet-shaped.

Through the arrangement, one end of the cross-valve catheter, which is far away from the strain release sleeve, is the end entering a human body, and the bullet-shaped cross-valve catheter can adapt to the shape of a blood vessel and is more suitable for passing through a valve, so that a doctor can operate the cross-valve catheter conveniently.

Preferably, the bullet-shaped end surface of the valve-crossing catheter is coated with a hydrophilic coating.

Through the arrangement, the hydrophilic coating can lubricate the end part of the catheter, reduce friction force and facilitate a doctor to control the catheter to move to a specified position.

Preferably, the expansion part is made of a medical silicone rubber material.

Through the setting, medical silicon rubber has good plasticity, can follow the sacculus and be full and the expansion also can the reconversion.

Preferably, a bump is arranged at one end, close to the strain release sleeve, of the saccule tube, a groove is arranged at one end, close to the strain release sleeve, of the catheter body, and the groove and the bump are arranged in a matched mode.

Through the arrangement, when the conveying catheter enters, the convex block is matched and fixedly connected with the groove, so that the catheter body and the sacculus tube can be prevented from sliding and rotating relatively.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

the names of corresponding labels in the drawings are:

1-valve-crossing catheter, 2-valve-crossing guide wire, 3-strain relief sleeve, 4-joint, 5-catheter body, 6-sacculus tube, 7-expansion part, 8-groove and 9-bump.

Detailed Description

The invention will be described in further detail with reference to the following drawings and embodiments:

as shown in fig. 1 to 3, a transvaginal aortic valve replacement transvaginal valve crossing auxiliary device comprises a transvaginal valve crossing catheter 1, a transvaginal valve crossing guide wire 2 and a superhard guide wire, wherein the transvaginal valve crossing guide wire 2 and the superhard guide wire can be both arranged in the transvaginal valve crossing catheter 1 in a penetrating way, the left end of the transvaginal valve crossing catheter 1 is connected with a strain release sleeve 3, the right end of the transvaginal valve crossing catheter 1 is arranged in a bullet shape, the surface of one bullet-shaped end of the transvaginal valve crossing catheter 1 is coated with a hydrophilic coating, the left end of the strain release sleeve 3 is connected with a connector 4, the transvaginal valve crossing catheter 1 comprises a catheter body 5, a saccule 6 is arranged in the penetrating way on the inner side of the catheter body 5, the catheter body 5 is provided with an expansion part 7, the expansion part 7 has elasticity, the expansion part 7 is made of medical silicon rubber material, the saccule 6 is fixedly bonded with a saccule, the saccule and the saccule is positioned at the same vertical position with the expansion part 7, the left end of the saccule 6 is provided with a convex block 9, the left end of the catheter body 5 is provided with a groove 8, the groove 8 and the bump 9 are arranged in a matching way.

The specific implementation process is as follows: after the valve-crossing guide wire 2 enters the left ventricle, a doctor exchanges the previously inserted left coronary artery catheter with the valve-crossing catheter 1, the valve-crossing guide wire 2 is withdrawn after the completion, then the superhard guide wire is led in through the valve-crossing catheter 1, the balloon tube 6 is loaded with a balloon, the valve is loaded outside the expansion part 7 of the catheter body 5, the valve-crossing catheter 1 is firstly pulled to a designated position through the superhard guide wire, then the balloon on the balloon tube 6 is conveyed to the valve opening to be inflated so that the valve of a patient is expanded, the balloon is quickly exhausted after the completion and returns to the initial position, then the balloon tube 6 and the catheter body 5 move together to convey the new valve to the same position, the balloon is inflated to release the new valve, and the balloon is quickly exhausted and returns after the completion.

The balloon dilatation and valve release can be completed at one time by matching the catheter body 5 and the balloon tube 6, and the end of the valve-crossing catheter 1 entering the human body is bullet-shaped, so that the shape of the blood vessel can be adapted to and more suitable for passing through the valve, and the operation of a doctor is facilitated; the bullet-shaped end surface of the valve-crossing catheter 1 is coated with a hydrophilic coating, so that the end part of the catheter becomes lubricated, the friction force is reduced, and a doctor can conveniently control the catheter to move to a specified position; the expansion part 7 is made of medical silicon rubber material, and the medical silicon rubber has good plasticity and can expand along with the filling of the saccule and also can restore the original shape; the one end that sacculus pipe 6 is close to strain relief sleeve 3 is equipped with lug 9, and the one end that pipe body 5 is close to strain relief sleeve 3 is equipped with recess 8, recess 8 with lug 9 cooperation sets up, and lug 9 agrees with fixed connection with recess 8 and can prevent that pipe body 5 and sacculus pipe 6 from producing relative slip and rotation.

The above description is only an example of the present invention, and the common general knowledge of the known specific technical solutions or characteristics in the solutions is not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A transcatheter aortic valve replacement transvalve auxiliary device comprises a transvalve catheter (1), a transvalve guide wire (2) and a superhard guide wire, wherein the transvalve guide wire (2) and the superhard guide wire are both arranged in the transvalve catheter (1) in a penetrating way, and is characterized in that: one end of the valve crossing catheter (1) is connected with a strain release sleeve (3), the free end of the strain release sleeve (3) is connected with a connector (4), the valve crossing catheter (1) comprises a catheter body (5), a balloon tube (6) penetrates through the inner side of the catheter body (5), the catheter body (5) is provided with an expansion part (7), the expansion part (7) has elasticity, and the balloon tube (6) is connected with a balloon.

2. The transcatheter aortic valve replacement transobturator assist device of claim 1, wherein: one end of the valve-crossing catheter (1) far away from the strain relief sleeve (3) is arranged to be bullet-shaped.

3. The transcatheter aortic valve replacement transobturator assist device of claim 2, wherein: the bullet-shaped end surface of the valve-crossing catheter (1) is coated with a hydrophilic coating.

4. The transcatheter aortic valve replacement transobturator assist device of claim 1, wherein: the expansion part (7) is made of medical silicon rubber material.

5. The transcatheter aortic valve replacement transobturator assist device of claim 1, wherein: one end, close to the strain release sleeve (3), of the sacculus tube (6) is provided with a convex block (9), one end, close to the strain release sleeve (3), of the catheter body (5) is provided with a groove (8), and the groove (8) is matched with the convex block (9).