CN213552242U

CN213552242U - Balloon dilatation stent for vertebroplasty

Info

Publication number: CN213552242U
Application number: CN202022366149.5U
Authority: CN
Inventors: 王建; 郑波
Original assignee: Yaan Peoples Hospital
Current assignee: Yaan Peoples Hospital
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-29
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a vertebroplasty sacculus expansion bracket includes sacculus expansion pipe, branch pipe, sacculus and support at least, the end connection of expansion pipe has at least three branch pipe, the one end of branch pipe is connected with sacculus and is the annular array with the expansion pipe center and arranges, the outside of sacculus is pressed and is held there is the support. The number of the balloons is six, and two adjacent balloons are in contact. An air inlet pipe is arranged on the dilating catheter. And the expansion catheter is also provided with a pressure release valve. The material of the dilating catheter is nylon or polyurethane, and the material of the stent is metal, alloy or biomaterial compatible with a human body. The utility model discloses a design of changing a new method is a plurality of sacculums that cyclic annular was arranged, because form the passageway that makes things convenient for blood to pass through in the middle of the cyclic annular sacculus, and then can make things convenient for blood to pass through at the in-process of each sacculus expansion.

Description

Balloon dilatation stent for vertebroplasty

The technical field is as follows:

the utility model relates to the technical field of medical equipment, in particular to a centrum forming balloon dilatation stent.

Background art:

percutaneous Vertebroplasty (PVP) is a minimally invasive spinal surgery technique that percutaneously injects bone cement into a vertebral body through the pedicle of a vertebral arch or outside the pedicle of a vertebral arch to increase the strength and stability of the vertebral body, prevent collapse, relieve pain, and even partially restore the height of the vertebral body. Percutaneous Kyphoplasty (PKP) is an improvement and development of percutaneous vertebroplasty, and Berkeley orthopedist Mark Reiley in 1999 developed an expandable Bone-expanding balloon (KyphXTM, Inflatable Bone Tamp), which is a technique for restoring a vertebral body by expanding the balloon inside the percutaneous vertebral body to form a space inside the vertebral body, thus reducing the thrust required for injecting Bone cement and preventing the Bone cement from flowing therein. Compared with the conventional mode, the mode has no difference in biomechanical properties, and clinical application shows that the pain symptom can be relieved or relieved, the height of the compressed vertebral body can be obviously recovered, the rigidity and the strength of the vertebral body are increased, the physiological curvature of the spine is recovered, the volume of the pleuroperitoneal cavity can be increased, the function of organs is improved, and the life quality of a patient is improved.

Vertebroplasty balloon expandable stent is a common medical instrument in percutaneous vertebroplasty, and the existing vertebroplasty balloon expandable stent mostly adopts a cylindrical balloon expandable stent, which is favorable for the uniform expansion of a balloon, but the cylindrical balloon can influence the passage of blood in the process of expansion and expansion, so that the temporary ischemia occurs at the position, and the balloon can not be expanded for a long time in an operation, thereby limiting the use effect of the vertebroplasty balloon expandable stent.

In view of the above situation, it is necessary to design a vertebroplasty balloon expandable stent that does not affect blood circulation during the expansion process.

The utility model has the following contents:

an object of the utility model is to provide a vertebroplasty sacculus expansion bracket to solve the problem of proposing among the above-mentioned background art.

The utility model discloses by following technical scheme implement:

the centrum forming sacculus expansion bracket at least comprises a sacculus expansion catheter, branch pipes, a sacculus and a bracket, the end part of the expansion catheter is connected with at least three branch pipes, one end of each branch pipe is connected with the sacculus and the sacculus is arranged in an annular array mode through the center of the expansion catheter, and the bracket is pressed and held on the outer side of the sacculus.

As a further aspect of the present invention: the number of the balloons is six, and two adjacent balloons are in contact.

As a further aspect of the present invention: an air inlet pipe is arranged on the dilating catheter.

As a further aspect of the present invention: and the expansion catheter is also provided with a pressure release valve.

As a further aspect of the present invention: the material of the dilating catheter is nylon or polyurethane, and the material of the stent is metal, alloy or biomaterial compatible with a human body.

The utility model has the advantages that: the utility model discloses a great deal of defect that influences blood through bringing in the cylindric sacculus expansion process of tradition has been abandoned, the utility model discloses a design in a new way is a plurality of sacculums that cyclic annular was arranged, because the passageway that makes things convenient for blood to pass through is formed in the middle of the cyclic annular sacculus, and then can make things convenient for blood to pass through at the in-process of each sacculus expansion.

To sum up, the utility model discloses simple structure, it is simple to model, the sacculus of cyclic annular arrangement is pleasing to the eye again can make things convenient for sacculus expansion in-process blood circulation promptly.

Description of the 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 front view structural schematic diagram of a vertebroplasty balloon expandable stent;

fig. 2 is a schematic view of the structure of the middle balloon of the present invention;

fig. 3 is a schematic view of the bottom view structure of the middle balloon of the present invention.

In the figure: 100. a balloon dilation catheter; 110. an air inlet pipe; 120. a pressure relief valve; 200. a branch pipe; 300. a balloon; 400. and (4) a bracket.

The specific implementation mode is as follows:

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.

Referring to fig. 1 to 3, in an embodiment of the present invention, the balloon expandable stent for vertebroplasty at least includes a balloon expandable catheter 100, a branch tube 200, a balloon 300 and a stent 400, wherein an air inlet tube 110 is disposed on the expandable catheter 100. A pressure relief valve 120 is also provided on the dilatation catheter 100. The end of the dilating catheter 100 is connected with at least three branch tubes 200, one end of each branch tube 200 is connected with a balloon 300, the balloons 300 are arranged in an annular array at the center of the dilating catheter 100, and the stent 400 is pressed and held at the outer side of each balloon 300. The number of the balloons 300 is six and two adjacent balloons 300 are in contact.

It should be noted that the material of the dilating catheter 100 is nylon or polyurethane, and the material of the stent 400 is a metal, an alloy or a biomaterial compatible with the human body.

The utility model has the advantages as follows:

the utility model discloses a design of changing a new method is a plurality of sacculums 300 that cyclic annular was arranged, because the passageway that makes things convenient for blood to pass through is formed in the middle of cyclic annular sacculus 300, and then can make things convenient for blood to pass through at the in-process of each sacculus 300 expansion.

To sum up, the utility model discloses simple structure, it is simple to model, the sacculus 300 that the ring-type was arranged is pleasing to the eye promptly and can make things convenient for sacculus 300 expansion in-process blood circulation again.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

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. The balloon dilatation stent for vertebroplasty is characterized by at least comprising a balloon dilatation catheter (100), branch tubes (200), a balloon (300) and a stent (400), wherein the end of the dilatation catheter (100) is connected with at least three branch tubes (200), one end of each branch tube (200) is connected with the balloon (300) and the balloon (300) is arranged in an annular array in the center of the dilatation catheter (100), and the stent (400) is pressed and held on the outer side of the balloon (300).

2. The vertebroplasty balloon expandable stent of claim 1, wherein: the number of the balloons (300) is six, and two adjacent balloons (300) are in contact.

3. The vertebroplasty balloon expandable stent of claim 2, wherein: an air inlet pipe (110) is arranged on the dilating catheter (100).

4. The vertebroplasty balloon expandable stent of claim 1, wherein: the dilating catheter (100) is also provided with a pressure relief valve (120).

5. The vertebroplasty balloon expandable stent of claim 1, wherein: the material of the dilating catheter (100) is nylon or polyurethane, and the material of the stent (400) is metal, alloy or biomaterial compatible with the human body.