CN219501141U

CN219501141U - Vertebra expander

Info

Publication number: CN219501141U
Application number: CN202320633563.9U
Authority: CN
Inventors: 章伟; 李峰; 沈永强; 李刚; 邱贵兴
Original assignee: Zhejiang Jiayou Medical Instrument Co ltd
Current assignee: Zhejiang Jiayou Medical Instrument Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-11
Anticipated expiration: 2033-03-28

Abstract

The utility model relates to the field of medical instruments, in particular to a vertebra expander. The utility model relates to a vertebra expander, which comprises a push rod handle, at least one push rod and at least one expanding mechanism, wherein the push rod and the expanding mechanism are arranged in a one-to-one fit manner, the expanding mechanism comprises connecting rods, the push rod is rotationally connected with the connecting rods, and the connecting rods are rotationally connected. The utility model adopts a mechanical structure to open and expand the collapsed vertebral body, and has the characteristics of small wound, high expansion force and the like.

Description

Vertebra expander

Technical Field

The utility model relates to the field of medical instruments, in particular to a vertebra expander.

Background

As the population of China is aging and gradually aggravated, the aging degenerative disease is gradually increased, the number of vertebroplasty or kyphoplasty is gradually increased, and in the series of operation modes, a balloon catheter inserted into the vertebroplasty is inflated and expanded by a pressure filling device, however, a series of problems such as leakage and the like can occur in the balloon expanding process; at the same time, mechanically expanded vertebral dilators appear in the market, but the main problem is that after the dilators are expanded, the mechanical device is prevented from retracting due to bone spurs and broken bones in the vertebral body, and the instrument is difficult to retract. As a supplementary choice for kyphoplasty, the product can expand the vertebra expander through the puncture sheath after percutaneous puncture, and can effectively solve the fracture caused by new or old collapse.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects of the prior art, and provides a vertebra expander with mechanical distraction, which comprises the following specific scheme:

the utility model provides a vertebra expander, includes push rod handle, at least one push rod and at least one mechanism of strutting, push rod and mechanism of strutting one-to-one cooperation set up, the mechanism of strutting includes the connecting rod, push rod and connecting rod rotate to be connected, rotate between the connecting rod and connect.

The push rod is rotationally connected with the connecting rod through a pin, and the connecting rods are rotationally connected through a pin. The push rod is typically made of medical grade stainless steel. The push rod handle is made of high polymer materials.

The connecting rod comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is rotationally connected with the push rod through a pin, the other end of the first connecting rod is rotationally connected with the second connecting rod through a pin, and the other end of the second connecting rod is rotationally connected with the third connecting rod through a pin.

The number of the push rods and the number of the supporting mechanisms are 2.

The novel multifunctional hand-held device comprises an outer tube, wherein an outer tube handle is arranged on one side of the outer tube, the outer tube handle comprises an outer tube handle thread, the push rod handle comprises a push rod handle thread, and the outer tube handle thread and the push rod handle thread are matched. The outer tube is typically made of medical grade stainless steel.

And a side hole is arranged on one side of the outer tube close to the opening mechanism. The side hole is used for expanding and recovering the expanding member.

According to the vertebra expander, the push rod handle is adjusted to push the push rod, so that the expanding mechanism is pushed to expand, and the collapsed vertebral body is expanded.

The expanding mechanism of the vertebra expander is an independent component, so that the phenomenon of bone clamping after retraction can be effectively solved. And the mechanical structure is adopted for expanding the collapsed vertebral body, so that the expansion device has the characteristics of small wound, high expansion force and the like.

Drawings

FIG. 1 is a schematic representation of the distracted state of the vertebral expander of the present utility model;

FIG. 2 is a schematic representation of the structure of the vertebral expander of the present utility model in its retracted state;

FIG. 3 is a schematic illustration of a portion of the construction of a vertebral expander of the present utility model;

fig. 4 is a schematic view of a portion of a vertebral expander of the present utility model.

Wherein the reference numerals: 1. a push rod handle; 2. an outer tube handle; 3. an outer tube; 4. a push rod; 5. a spreading mechanism; 6. a pin; 7. a side hole; 8. a connecting rod; 9. push rod handle screw thread; 10. an outer tube handle thread.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present utility model in a schematic manner, and thus show only the constitution related to the present utility model.

The utility model provides a vertebra expander, includes push rod handle 1, at least one push rod 4 and at least one mechanism that struts 5, and push rod 4 and mechanism that struts 5 one-to-one set up, and mechanism that struts 5 includes connecting rod 8, and push rod 4 and connecting rod 8 rotate to be connected, rotate between connecting rod 8 to be connected. The push rod 4 and the connecting rod 8 are rotationally connected through the pin 6, and the connecting rods 8 are rotationally connected through the pin 6. The push rod 4 is typically made of medical grade stainless steel. The push rod handle 1 is made of a high polymer material. The connecting rod 8 comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is rotationally connected with the push rod 4 through a pin 6, the other end of the first connecting rod is rotationally connected with the second connecting rod through the pin 6, and the other end of the second connecting rod is rotationally connected with the third connecting rod through the pin 6. The number of push rods 4 and the number of opening mechanisms 5 are 2.

Including outer tube 3, outer tube 3 one side is equipped with outer tube handle 2, and outer tube handle 2 includes outer tube handle screw thread 10, and push rod handle 1 includes push rod handle screw thread 9, and outer tube handle screw thread 10 and push rod handle screw thread 9 cooperation setting. The outer tube 3 is typically made of medical grade stainless steel. A side hole 7 is arranged on one side of the outer tube 3 close to the opening mechanism 5. The side hole 7 is used for expanding and recovering the expanding member 5.

The outer tube 3 serves as an integral support structure for the vertebral expander, and the distal end of the outer tube 3 is provided with a pair of holes for expansion of the push rod 4 against the distracting member 5, the material of which is typically made of stainless steel.

The outer tube handle 2 is connected with the proximal end of the outer tube 3 through injection molding, and threads for connecting with the push rod handle are attached to the proximal end inside the outer tube handle 2.

Wherein the distal end of the outer tube 3 may be domed or flat topped.

The inside push rod 4 can reciprocate in the outer tube 3 through the handle rotation of the vertebra expander, and the back strut member 5 can expand at the fixed side hole 7 of the outer tube 3 distal end through mechanical conduction at this moment, and the vertebra expander is retracted after the expansion and is prevented from the influence of foreign matters such as bone spurs on retraction at this moment, so that the push rod 4 distal end strut structure 5 is two independent structures.

The above-described preferred embodiments according to the present utility model are intended to suggest that, in view of the above description, various changes and modifications may be made by the worker concerned without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A vertebral expander, characterized by: the push rod and the spreading mechanism are arranged in a one-to-one fit manner, the spreading mechanism comprises connecting rods, the push rod is rotationally connected with the connecting rods, and the connecting rods are rotationally connected.

2. A vertebral expander according to claim 1, wherein: the push rod is rotationally connected with the connecting rod through a pin, and the connecting rods are rotationally connected through a pin.

3. A vertebral expander according to any one of claims 1 or 2, wherein: the connecting rod comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is rotationally connected with the push rod through a pin, the other end of the first connecting rod is rotationally connected with the second connecting rod through a pin, and the other end of the second connecting rod is rotationally connected with the third connecting rod through a pin.

4. A vertebral expander according to claim 1, wherein: the number of the push rods and the number of the supporting mechanisms are 2.

5. A vertebral expander according to claim 1, wherein: the novel multifunctional hand-held device comprises an outer tube, wherein an outer tube handle is arranged on one side of the outer tube, the outer tube handle comprises an outer tube handle thread, the push rod handle comprises a push rod handle thread, and the outer tube handle thread and the push rod handle thread are matched.

6. A vertebral expander according to claim 5, wherein: and a side hole is arranged on one side of the outer tube close to the opening mechanism.