CN219517516U

CN219517516U - Balloon tube angle expander

Info

Publication number: CN219517516U
Application number: CN202320510010.4U
Authority: CN
Inventors: 赵迎红; 史瑞民; 杨飒飒; 陆剑锋
Original assignee: Polyrey Medical Tech Suzhou Co ltd
Current assignee: Polyrey Medical Tech Suzhou Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-15
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to a balloon tube angle expander, which comprises a support tool, a balloon expander and a pneumatic expander. The support tool is provided with an accommodating groove for accommodating the sacculus; the balloon expander comprises an expandable part, the expandable part has a radial expansion state and a radial contraction state, when the expandable part is in the radial contraction state, the expandable part can enter and exit the balloon from the angle of the balloon tube, and when the expandable part is positioned in the balloon and is converted from the radial contraction state to the radial expansion state, the balloon expands along with the expandable part; the pneumatic expander comprises a pneumatic expansion center capable of radially expanding, and the pneumatic expansion center can be inserted into the balloon tube corner and enables the balloon tube corner to radially expand when the pneumatic expansion center radially expands. The balloon tube angle expander can radially expand the balloon tube angle, and can greatly reduce the rejection rate of balloon production, thereby effectively reducing the cost of balloon products, and being convenient and safe to operate.

Description

Balloon tube angle expander

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a balloon catheter angle expander.

Background

In the production process of the balloon, balloon tube angles which are in circular rings are formed at the two ends of the balloon body of the balloon and are used for welding the fixed ring tubes at the two ends of the balloon. In the existing balloon preparation process, the inner diameters of balloon tube angles at two ends of a balloon body are reduced due to various reasons such as cooling operation, so that the later double-ring tube cannot pass through the balloon tube angles, and further cannot be welded, and a plurality of scrapped balloons are generated. Because the balloon material is softer and can not be fixed, the inner diameter tolerance of the balloon tube angle is very small, and the inner wall of the tube angle is very thin, so that the balloon tube angle is difficult to expand, and the higher rejection rate of the balloon is the main reason that the cost of the balloon can not be reduced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a balloon catheter angle expander capable of radially expanding a balloon catheter angle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the balloon tube angle expander comprises a balloon body capable of being expanded radially and balloon tube angles which are formed at two ends of the balloon body and are in circular ring structures, and the balloon tube angle expander comprises a supporting tool, a balloon expander and a pneumatic expander.

The support tool is provided with an accommodating groove for accommodating the balloon; the balloon dilator comprises an expandable portion having a radially expanded state and a radially contracted state, the expandable portion being expandable into and out of the balloon body from the balloon tube angle when the expandable portion is in the radially contracted state, the balloon body of the balloon being subsequently expanded when the expandable portion is within the balloon and transitions from the radially contracted state to the radially expanded state; the pneumatic expander comprises a pneumatic expansion center capable of radially expanding, and the pneumatic expansion center can be inserted into the ball tube corner and enables the ball tube corner to radially expand when the pneumatic expansion center radially expands.

The balloon tube angle expander is characterized in that a balloon is placed in a containing groove, the balloon is expanded through the balloon expander to enable the balloon to keep a certain strength to fix the balloon, then a pneumatic expansion tip of the pneumatic expander is inserted into the balloon tube angle, and the inner diameter of the balloon tube angle is increased along with the expansion of the pneumatic expansion tip in the radial direction, so that the radial expansion of the balloon tube angle is achieved.

Preferably, the balloon dilator further comprises a catheter and a pressure filling and releasing device, the expandable portion is sleeved on the outer periphery of the distal end of the catheter, a cavity extending along the axial direction of the expandable portion is formed in the catheter, a through hole in the expandable portion is formed in the outer periphery of the distal end of the cavity, the proximal end of the cavity is connected with the pressure filling and releasing device, the expandable portion is radially expanded by pressurizing the expandable portion through the pressure filling and releasing device, the expandable portion is depressurized through the pressure filling and releasing device, and the expandable portion is radially contracted accordingly.

According to some embodiments, the pressure charging and discharging device is a syringe.

Specifically, the bag body comprises a first part, a second part and a third part which are sequentially connected or integrally formed from the far end to the near end, the first part and the third part are respectively in a conical structure, the second part is in a cylindrical structure, the inner diameter of the first part is gradually increased from the far end to the near end, the inner diameter of the third part is gradually reduced from the far end to the near end, and the maximum inner diameter of the first part, the inner diameter of the second part and the maximum inner diameter of the third part are equal. When the expandable portion is in the radially expanded state in the balloon, the balloon is in a radially expanded state, the axes of the catheter and the balloon coincide, and the expandable portion is in abutting contact with the first portion.

Through the conflict of expandable portion and first part, not only can effectively keep sacculus expansion state stability, can also effectively prevent that the sacculus from taking place around its axis pivoted phenomenon in the operation process, improve the fixed effect of sacculus.

According to some preferred embodiments, the expandable portion is comprised of a plurality of shape memory filaments uniformly distributed along the distal periphery of the catheter, the expandable portion having a generally conical configuration in the radially expanded state.

Preferably, a sealing element is further arranged on the catheter, and when the expandable part reaches the inner distal end of the balloon body, the sealing element is positioned outside the balloon body and matched with the balloon tube angle at the proximal end of the balloon, so that the balloon tube angle at the proximal end of the balloon is not communicated with the outside.

Preferably, the proximal end of the catheter is provided with an operating part which has a structure similar to a scissor handle, so that the operation of the expandable part in and out of the balloon can be realized by one hand of an operator.

Further preferably, the shape memory wire is a nickel-titanium alloy memory wire or a polymer material memory wire.

Further preferably, the number of the shape memory filaments is 3 to 20.

Further preferably, the shape memory wire comprises a first section, a second section and a third section which are sequentially connected or integrally formed, the length of the first section is smaller than that of the third section is smaller than that of the second section, one end of the first section is fixedly connected with the catheter, the other end of the first section is fixedly connected or integrally formed with one end of the second section, the other end of the second section is fixedly connected or integrally formed with one end of the third section, the other end of the third section is fixedly connected with the catheter, when the expandable portion is in the radial expansion state, the first section and the third section respectively extend from the proximal end to the distal end in a direction away from the catheter, the second section extends from the proximal end to the distal end in a direction close to the catheter, and the second section is abutted against the inner surface of the capsule body.

Preferably, the support fixture comprises a fixed seat and a movable part arranged on the fixed seat in a sliding manner, the pneumatic expander is fixedly arranged at the far end of the fixed seat, the movable part approaches or departs from the pneumatic expander when sliding on the fixed seat, and the accommodating groove is formed in the movable part.

Further preferably, the upper part of the accommodating groove is open, the inner surface of the accommodating groove is a circular arc surface, the inner diameter of the circular arc surface is consistent with the maximum outer diameter of the capsule body, and the groove depth is 0.5-1 times of the maximum outer diameter of the capsule body.

Further preferably, an arc-shaped snap lock for fixing the balloon in cooperation with the accommodating groove is further arranged on the movable part.

Further preferably, the distal end of the movable portion is further provided with a bearing portion having an inner circular arc surface on which the balloon tube angle is located when the balloon is placed in the receiving groove, and an inner diameter of the inner circular arc surface is kept consistent with an actually required inner diameter of the balloon tube angle, so that the balloon tube angle can be prevented from being excessively radially expanded.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the balloon tube angle expander can radially expand the balloon tube angle, and can greatly reduce the rejection rate of balloon production, thereby effectively reducing the cost of balloon products, and being convenient and safe to operate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view (partially in section) of an embodiment of a balloon catheter angle dilator;

FIG. 2 is a schematic view of a partial structure of a balloon catheter angle dilator of an embodiment;

in the above figures:

1. supporting the tool; 11. a fixing seat; 12. a movable part; 13. a receiving groove; 14. arc-shaped snap locks; 15. a support part;

2. a balloon dilator; 21. an expandable portion; 211. a shape memory wire; 22. a conduit; 23. a needle cylinder; 24. a seal; 25. an operation unit;

3. a pneumatic expander; 31. pneumatic expanding center;

4. a balloon; 41. a bladder; 411. a first portion; 412. a second portion; 413. a third section; 42. balloon tube angle.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it is to be understood that distal refers to the end of the instrument or component that is distal to the operator and proximal refers to the end of the instrument or component that is proximal to the operator; axial refers to a direction parallel to the central line of the distal and proximal ends of the instrument or component, and radial refers to a direction perpendicular to the axial direction; the inner and outer are positions defined relative to the distance of the center of the instrument or component, wherein the inner is a position near the center of the instrument or component and the outer is a position away from the center of the instrument or component. The above description of orientation words is merely for convenience in describing embodiments of the present utility model and for simplicity of description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting embodiments of the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "coupled," "affixed," and the like are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally formed. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present utility model, plural means two or more.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present embodiment provides a balloon catheter angle 42 dilator comprising a support tooling 1, a balloon dilator 2 and a pneumatic dilator 3.

Specifically, the balloon 4 includes a radially expandable balloon 41 and balloon tube corners 42 formed at both ends of the balloon 41 in a circular ring-shaped structure. The balloon 41 includes a first portion 411, a second portion 412 and a third portion 413 which are sequentially connected or integrally formed from a distal end to a proximal end thereof, the first portion 411 and the third portion 413 are respectively in a conical structure, the second portion 412 is in a cylindrical structure, an inner diameter of the first portion 411 is gradually increased from the distal end to the proximal end, an inner diameter of the third portion 413 is gradually decreased from the distal end to the proximal end, and a maximum inner diameter of the first portion 411, an inner diameter of the second portion 412 and a maximum inner diameter of the third portion 413 are equal.

Specifically, the support tool 1 comprises a fixed seat 11 and a movable part 12 arranged on the fixed seat 11 in a sliding manner, the pneumatic expander 3 is fixedly arranged at the far end of the fixed seat 11, the movable part 12 approaches or departs from the pneumatic expander 3 when sliding on the fixed seat 11, and a containing groove 13 for placing the balloon 4 is formed in the movable part 12. The upper part of the accommodating groove 13 is opened, the inner surface of the accommodating groove 13 is a circular arc surface, the inner diameter of the circular arc surface is consistent with the maximum outer diameter of the capsule 41, and the groove depth is consistent with the maximum outer diameter of the capsule 41. The movable part 12 is also provided with an arc-shaped snap lock 14 for fixing the balloon 4 in cooperation with the receiving groove 13. The distal end of the movable part 12 is further provided with a support part 15, the support part 15 having an inner circular arc surface on which the balloon catheter angle 42 is positioned when the balloon 4 is placed in the receiving groove 13, the inner diameter of the circular arc inner surface being maintained to be consistent with the actually required inner diameter of the balloon catheter angle 42, so that the balloon catheter angle 42 is prevented from being radially excessively expanded.

Specifically, balloon dilator 2 includes an expandable portion 21, a catheter 22, and a pressure-inflation and pressure-relief device. The expandable portion 21 is sleeved on the outer periphery of the distal end of the catheter 22, a cavity extending along the axial direction of the catheter 22 is formed in the catheter 22, a through hole positioned in the expandable portion 21 is formed in the outer periphery of the distal end of the cavity, and the proximal end of the cavity is connected with a pressure filling and releasing device. The expandable portion 21 has a radially expanded state and a radially contracted state, the expandable portion 21 being operable to enter and exit the balloon body 41 from the balloon tube corner 42 when the expandable portion 21 is in the radially contracted state, the balloon body 41 being subsequently expanded when the expandable portion 21 is positioned within the balloon 4 and is switched from the radially contracted state to the radially expanded state. The expandable portion 21 is radially expanded by pressurizing the expandable portion 21 by the pressurizing and depressurizing means, and the expandable portion 21 is depressurized by the pressurizing and depressurizing means, whereby the expandable portion 21 is radially contracted.

In this embodiment, when the expandable portion 21 is located in the balloon 41 and is in the radially expanded state, the balloon 41 is in the radially expanded state, the axes of the catheter 22 and the balloon 41 coincide, and the expandable portion 21 is in abutting contact with the first portion 411. The expandable portion 21 is comprised of a plurality of shape memory filaments 211 uniformly distributed along the distal periphery of the catheter 22, the expandable portion 21 being generally tapered in configuration in a radially expanded state. In this embodiment, the shape memory wires 211 are nickel-titanium alloy memory wires, the number of the shape memory wires 211 is 10, each shape memory wire 211 includes a first section, a second section and a third section which are sequentially connected or integrally formed, the length of the first section is smaller than that of the third section, the length of the third section is smaller than that of the second section, one end of the first section is fixedly connected with a catheter, the other end of the first section is fixedly connected with one end of the second section or integrally formed, the other end of the second section is fixedly connected with one end of the third section or integrally formed, the other end of the third section is fixedly connected with the catheter, when the expandable portion 21 is in the radially expanded state, the first section and the third section extend from the proximal end to the distal end in a direction away from the catheter 22, the second section extends from the proximal end to the distal end in a direction close to the catheter 22, and the second section is in contact with the inner surface of the capsule 41.

In this embodiment, the catheter 22 is further provided with a sealing member 24, and when the expandable portion 21 reaches the inner distal end of the balloon body 41, the sealing member 24 is located outside the balloon body 41 and cooperates with the balloon tube corner 42 at the proximal end of the balloon 4 to prevent the balloon tube corner 42 at the proximal end of the balloon 4 from communicating with the outside, the proximal end of the catheter 22 is provided with an operating portion 25, and the operating portion 25 has a structure similar to a scissor handle, so that the operation of the expandable portion 21 entering and exiting the balloon 4 can be realized by one hand of an operator.

In this embodiment, the pressure-filling and releasing device is a syringe 23, and inflation or deflation of the balloon 4 can be achieved by inflating or deflating the catheter 22 through the syringe 23.

In particular, the pneumatic dilator 3 comprises a radially expandable pneumatic dilation tip 31, the pneumatic dilation tip 31 being capable of extending into the balloon catheter angle and radially expanding the balloon catheter angle 42 upon radial expansion of the pneumatic dilation tip 31.

The use method of the balloon catheter angle expander of the embodiment is as follows:

1) Placing the balloon 4 in a containing groove 13 of the supporting tool 1, and locking an arc-shaped snap lock 14;

2) Delivering the expandable portion 21 of the balloon dilator 2 into the balloon 4 to its inner distal end against the balloon body 41;

3) Inflation pressurization using an inflation and deflation device radially expands the expandable portion 21 to a fully expanded state of the bladder 41;

4) Sliding the movable part 12 of the support tool 1 to approach the pneumatic expander 3 until the pneumatic expanding tip 31 is inserted into the balloon tube corner 42;

5) Opening the pneumatic expander 3 to radially expand the balloon catheter angle 42;

6) The pneumatic expander 3 is closed, the inflation and decompression device is used for air extraction and decompression, the expandable part 21 is restored to a radial contracted state, the balloon expander 2 is withdrawn, the arc-shaped snap lock 14 is unlocked, and the balloon 4 is taken away or the balloon tube angle 42 on the other side is exchanged for the expansion operation.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Balloon pipe angle expander, sacculus (4) are including radially expandable cell body (41) and form in cell body (41) both ends be balloon pipe angle (42) of ring shape structure, its characterized in that: the balloon catheter angle dilator includes:

the support tool (1), wherein the support tool (1) is provided with a containing groove (13) for placing the balloon (4);

a balloon dilator (2), the balloon dilator (2) comprising an expandable portion (21), the expandable portion (21) having a radially expanded state and a radially contracted state, the expandable portion (21) being movable into and out of the balloon body (41) from the balloon tube corner (42) when the expandable portion (21) is in the radially contracted state, the balloon body (41) of the balloon (4) expanding when the expandable portion (21) is located within the balloon (4) and transitioning from the radially contracted state to the radially expanded state;

a pneumatic expander (3) comprising a radially expandable pneumatic expansion tip (31), said pneumatic expansion tip (31) being insertable into said balloon tube corner (42) and causing radial expansion of said balloon tube corner (42) upon radial expansion of said pneumatic expansion tip (31).

2. The balloon catheter angle expander according to claim 1, wherein the balloon expander (2) further comprises a catheter (22) and a pressure filling and releasing device, the expandable portion (21) is sleeved on the outer periphery of the distal end of the catheter (22), a cavity extending along the axial direction of the expandable portion (21) is formed in the catheter (22), a through hole located in the expandable portion (21) is formed in the outer periphery of the distal end of the cavity, the proximal end of the cavity is connected with the pressure filling and releasing device, the expandable portion (21) is enabled to be radially expanded by pressurizing the expandable portion (21) through the pressure filling and releasing device, and the expandable portion (21) is enabled to be radially contracted accordingly.

3. Balloon tubular angle expander according to claim 2 and characterized in that said balloon body (41) comprises a first portion (411), a second portion (412) and a third portion (413) connected in sequence or integrally formed from its distal end to its proximal end, said first portion (411) and said third portion (413) being respectively of conical configuration, said second portion (412) being of cylindrical configuration, the inner diameter of said first portion (411) increasing gradually from distal end to proximal end, the inner diameter of said third portion (413) decreasing gradually from distal end to proximal end, the maximum inner diameter of said first portion (411), the inner diameter of said second portion (412) and the maximum inner diameter of said third portion (413) being equal,

when the expandable portion (21) is located in the balloon (41) and is in the radially expanded state, the balloon (41) is in a radially expanded state, the axes of the catheter (22) and the balloon (41) coincide, and the expandable portion (21) is in abutting contact with the first portion (411).

4. A balloon catheter angle expander as claimed in claim 3 and wherein said expandable portion (21) is comprised of a plurality of shape memory wires (211) uniformly distributed along the distal periphery of said catheter (22), said expandable portion (21) being generally conical in configuration in said radially expanded state;

the catheter (22) is provided with a sealing element (24), and when the expandable part (21) reaches the inner distal end of the balloon body (41), the sealing element (24) is matched with the balloon tube angle (42) at the proximal end of the balloon (4) so that the balloon tube angle (42) at the proximal end of the balloon (4) is not communicated with the outside.

5. The balloon catheter angle dilator according to claim 4, characterized in that the shape memory wire (211) is a nickel-titanium alloy memory wire or a polymer material memory wire;

and/or the number of the shape memory wires (211) is 3-20.

6. The balloon catheter angle expander of claim 4, wherein the shape memory wire (211) comprises a first section, a second section and a third section which are sequentially connected or integrally formed, the length of the first section is smaller than the length of the third section is smaller than the length of the second section, one end of the first section is fixedly connected with the catheter (22), the other end of the first section is fixedly connected or integrally formed with one end of the second section, the other end of the second section is fixedly connected with one end of the third section, the other end of the third section is fixedly connected with the catheter (22), the first section and the third section respectively extend from a proximal end to a distal end in a direction away from the catheter (22), the second section extends from the proximal end to the distal end in a direction close to the catheter (22), and the second section is abutted against the inner surface of the balloon body (41) when the expandable portion (21) is in the radially expanded state.

7. Balloon catheter angle dilator according to claim 2, characterized in that the inflation and pressure relief means is a needle cylinder (23).

8. The balloon catheter angle expander according to claim 1, wherein the support fixture (1) comprises a fixed seat (11) and a movable part (12) slidably arranged on the fixed seat (11), the pneumatic expander (3) is fixedly arranged at the far end of the fixed seat (11), the movable part (12) approaches or departs from the pneumatic expander (3) when sliding on the fixed seat (11), and the accommodating groove (13) is formed in the movable part (12).

9. The balloon catheter angle expander of claim 8, wherein the upper portion of the accommodating groove (13) is open, the inner surface of the accommodating groove (13) is a circular arc surface, the inner diameter of the circular arc surface is consistent with the maximum outer diameter of the balloon body (41), and the groove depth is 0.5-1 times of the maximum outer diameter of the balloon body (41).

10. Balloon catheter angle expander according to claim 8, characterized in that the movable part (12) is further provided with an arc-shaped snap lock (14) for co-operating with the receiving groove (13) for securing the balloon (4).