CN203059875U

CN203059875U - Bone expansion device

Info

Publication number: CN203059875U
Application number: CN 201220706578
Authority: CN
Inventors: 范勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-07-17
Anticipated expiration: 2022-12-20

Abstract

The utility model discloses a bone expansion device comprising an expansion airbag, an injection tube, a guide tube and a propulsion device, wherein the expansion airbag is connected with one end of the guide tube, the other end of the guide tube is connected with the propulsion device, the injection tube is located inside the guide tube and driven by the propulsion device, and the injection tube penetrates through the propulsion device to be connected with a connector of an outer injection syringe in a butted mode. The bone expansion device has two expansion methods including a transverse expansion method and a longitudinal expansion method, transverse expansion is formed due to the fact that injection liquid fills the airbag; and the propulsion device drives the injection tube, the injection tube tightly abuts against the inner wall at the front end of the expansion airbag, and therefore the expansion airbag is driven to perform longitudinal expansion. Expansion pressure can be controlled, and expansion stroke can be controlled through control over pressure and liquid volume.

Description

A kind of bone extension fixture

Technical field

This utility model relates to a kind of bone extension fixture for the treatment of osteopathia.

Background technology

Osteoporosis is that the body osseous tissue moves back the change of shape sexually transmitted disease (STD), has a lot of reasons to cause.The sickness rate of senile osteoporosis is very high, the fracture that causes because of the osteoporosis especially main site of pathological change of compression fracture comprises Drug therapy at the traditional Therapeutic Method of vertebral body, the brace mechanicalness is supported, selectively pain therapy, therapeutic physical education etc., and surgical intervention comprises vertebral body reinforcement technology and open operation.

The disclosed technical scheme of prior art as: 200580029415-sequential dilator system, 200510094420-bone dilator, 200580000786-bone dilator, 201010513057-bone surgery with two formula balloon dilatation catheters.Above technical scheme does not all provide a total solution to solving the bone expansion problem.

The utility model content

This utility model provides a kind of bone extension fixture, realizes typing to diseased region by lateral magnification and vertical expansion.

The purpose of this utility model is come specific implementation by the following technical programs:

A kind of bone extension fixture, comprise expanded balloon, syringe, guide pipe and propulsion plant, described expanded balloon is connected with an end of guide pipe, the other end of guide pipe is connected with propulsion plant, described syringe is positioned at described guide pipe inside, and described syringe is driven by described propulsion plant, and syringe passes described propulsion plant so that described syringe can dock with the joint of outer injectors.

Further, described propulsion plant comprises trocar sheath and inner core, and described trocar sheath is connected with the end of described guide pipe, and described inner core runs through with described syringe and is connected, and described inner core is positioned at the inside of described trocar sheath, and described syringe passes described inner core;

Further, the rear end of described trocar sheath is connected with spacing ring, and described inner core has external screw thread, and described spacing ring cooperates with the external screw thread of described inner core;

Further, the outside of described spacing ring is provided with operating grip, and the front end of described inner core is equipped with plug, and the rear end of inner core is connected with the inner core handle, and described syringe passes plug, inner core, inner core hands handle successively;

Further, described plug contacts with the inwall of described trocar sheath and slidably friction;

Further, described trocar sheath is made as flexible hose, and is provided with locking device at described trocar sheath, so that the inwall of described trocar sheath contacts and locks with the outer wall of inner core;

Further, described locking device has locking and opens two duties.

Further, the front end of described syringe is provided with the union joint of slick and sly structure, and is provided with injection port in the front end side of described syringe;

Further, be provided with sealing ring between described syringe and guide pipe, described sealing ring is socketed on the syringe at injection port rear portion, and described sealing ring is fixed on the inside of described guide pipe.

Further, the front end of described guide pipe is provided with extension mouth, and the guide pipe diameter of described extension mouth front end is less than the guide pipe diameter of extension mouth rear end, and described expanded balloon is socketed on the guide pipe of extension mouth front end.

Bone extension fixture through above-mentioned design, possess horizontal and vertical two kinds of expanded form, lateral magnification is filled air bag by injecting fluid and is formed, vertical expansion is to promote syringe by propulsion plant, front inner wall by syringe and expanded balloon holds out against, and then the driving expanded balloon is done vertical expansion.The pressure of expanded form is controlled, and the expansion stroke can be by pressure and liquid capacity control.

Description of drawings

Be described in further detail with this utility model of embodiment with reference to the accompanying drawings below.

Fig. 1 is the external structure of the described bone extension fixture of this utility model embodiment.

Fig. 2 is the structure chart that syringe is connected with propulsion plant.

Fig. 3 is the structure chart that guide pipe is connected with propulsion plant.

Fig. 4 is the cut-away view of described bone extension fixture.

Fig. 5 is the structure chart that has the described bone extension fixture of locking device.

Among the figure: 1, expanded balloon; 2, syringe; 21, union joint; 22, injection port; 3, guide pipe; 31, sealing ring; 32, extension mouth; 4, propulsion plant; 41, trocar sheath; 42, spacing ring; 43, operating grip; 45, plug; 46, inner core; 47, inner core hands handle; 5, locking device.

The specific embodiment

Shown in Fig. 1-5, the described bone extension fixture of this utility model embodiment, comprise expanded balloon 1, syringe 2, guide pipe 3 and propulsion plant 4, described expanded balloon 1 is connected with an end of guide pipe 3, the other end of guide pipe 3 is connected with propulsion plant 4, described syringe 2 is positioned at described guide pipe 3 inside, and described syringe 2 is driven by described propulsion plant 4, syringe 3 passes described propulsion plant 4 so that described syringe 2 can dock with the joint of outer injectors (not shown), by outer injectors syringe 2 is injected liquid, make expanded balloon 1 inner filling liquid, expanded balloon 1 is stressed and expands outwardly, and then reaches the purpose to expanded balloon 1 lateral magnification.

Described propulsion plant 4 comprises trocar sheath 41 and inner core 46, described trocar sheath 41 is connected with the end of described guide pipe 3, described inner core 46 runs through with described syringe 2 and is connected, described inner core 46 is positioned at the inside of described trocar sheath 41, described syringe 2 passes described inner core 46, by the guide effect of trocar sheath 41, make described inner core 46 can drive syringe 2 and advance, reach the purpose that expanded balloon 1 is carried out vertical expansion;

The rear end of described trocar sheath 41 is connected with spacing ring 42, described inner core 46 has external screw thread, described spacing ring 42 cooperates with the external screw thread of described inner core 46, make by threaded engagement and realize spiral propelling between trocar sheath 41 and the inner core 46, and the distance that advances realizes controllable operating;

The outside of described spacing ring 42 is provided with operating grip 43, by the controllable operating of operating grip 43 realizations to spacing ring 42; The front end of described inner core 46 is equipped with plug 45, the rear end of inner core 46 is connected with inner core handle 47, described syringe 2 passes plug 45, inner core 46, inner core handle 47 successively, plug 45 by inner core 46 front ends is realized the effects of guiding in trocar sheath 41 inside, and passes through inner core handle 47 realizations at rear portion to the controllable operating of inner core;

Described plug 45 contacts with the inwall of described trocar sheath 41 and slidably friction, like this can be so that the operation between trocar sheath 41 and the inner core 46, what make that inner core 46 can be free, stable does stretching motion in trocar sheath 41 inside, and reach the effect that rotation cooperates by plug 45, concentricity by between plug raising trocar sheath 41 and the inner core 46 improves the stability of operation;

Described trocar sheath 41 is made as flexible hose, and be provided with locking device 5 at described trocar sheath 41, so that the inwall of described trocar sheath 41 contacts and locks with the outer wall of inner core 46, even between trocar sheath 41 and inner core 46, do not adopt under the situation about being threaded like this, also can interfix to trocar sheath 41 and inner core 46, help the carrying out of injection operation;

Described locking device 5 has locking and opens two duties, under locking state, can not operate trocar sheath 41 and inner core 46; And under the state of opening, can carry out free operant to trocar sheath 41 and inner core 46.

The front end of described syringe 2 is provided with the union joint 21 of slick and sly structure, and the front end side at described syringe 2 is provided with injection port 22, union joint 21 by slick and sly structure contacts with the inwall of expanded balloon 1 front end, can realize the vertical expansion to expanded balloon 1, and guarantee expanded balloon 1 not to be produced destructive damage;

Between described syringe 2 and guide pipe 3, be provided with sealing ring 31, described sealing ring 31 is socketed on the syringe 2 at injection port rear portion, and described sealing ring 31 is fixed on the inside of described guide pipe 3, can realize the sealing between syringe 2 and the guide pipe 3 by described sealing ring 31, guarantee syringe 2 when stretching in guide pipe 3 inside, the inside of expanded balloon 1 does not have extraneous gas and enters.

The front end of described guide pipe 3 is provided with extension mouth 32, the guide pipe diameter of described extension mouth 32 front ends is less than the guide pipe diameter of extension mouth 32 rear ends, described expanded balloon 1 is socketed on the guide pipe 3 of extension mouth 32 front ends, can be so that dock with expanded balloon 1 by extension mouth 32.

Claims

1. bone extension fixture, it is characterized in that, comprise expanded balloon, syringe, guide pipe and propulsion plant, described expanded balloon is connected with an end of guide pipe, the other end of guide pipe is connected with propulsion plant, described syringe is positioned at described guide pipe inside, and described syringe drives by described propulsion plant, and syringe passes described propulsion plant so that described syringe can dock with the joint of outer injectors.

2. bone extension fixture as claimed in claim 1, it is characterized in that, described propulsion plant comprises trocar sheath and inner core, described trocar sheath is connected with the end of described guide pipe, described inner core runs through with described syringe and is connected, described inner core is positioned at the inside of described trocar sheath, and described syringe passes described inner core.

3. bone extension fixture as claimed in claim 2 is characterized in that, the rear end of described trocar sheath is connected with spacing ring, and described inner core has external screw thread, and described spacing ring cooperates with the external screw thread of described inner core.

4. bone extension fixture as claimed in claim 3, it is characterized in that the outside of described spacing ring is provided with operating grip, the front end of described inner core is equipped with plug, the rear end of inner core is connected with the inner core handle, and described syringe passes plug, inner core, inner core handle successively.

5. bone extension fixture as claimed in claim 4 is characterized in that, described plug contacts with the inwall of described trocar sheath and slidably friction.

6. as each described bone extension fixture in the claim 2 to 5, it is characterized in that described trocar sheath is made as flexible hose, and be provided with locking device at described trocar sheath, so that the inwall of described trocar sheath contacts and locks with the outer wall of inner core.

7. bone extension fixture as claimed in claim 6 is characterized in that, described locking device has locking and opens two duties.

8. bone extension fixture as claimed in claim 1 is characterized in that, the front end of described syringe is provided with the union joint of slick and sly structure, and is provided with injection port in the front end side of described syringe.

9. bone extension fixture as claimed in claim 8 is characterized in that, is provided with sealing ring between described syringe and guide pipe, and described sealing ring is socketed on the syringe at injection port rear portion, and described sealing ring is fixed on the inside of described guide pipe.

10. bone extension fixture as claimed in claim 1, it is characterized in that, the front end of described guide pipe is provided with extension mouth, and the guide pipe diameter of described extension mouth front end is less than the guide pipe diameter of extension mouth rear end, and described expanded balloon is socketed on the guide pipe of extension mouth front end.