CN102974027B

CN102974027B - Bone expanding device

Info

Publication number: CN102974027B
Application number: CN201210555141.0A
Authority: CN
Inventors: 范勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2014-12-17
Anticipated expiration: 2032-12-20
Also published as: CN102974027A

Abstract

The invention discloses a bone expanding device. The bone expanding device comprises an expanding airbag, an injection tube, a guide tube and a propelling device, wherein the expanding airbag is connected with one end of the guide tube; the other end of the guide tube is connected with the propelling device; the injection tube is positioned in the guide tube; the injection tube is driven by the propelling device; and the injection tube penetrates through the propelling device, so that the injection tube can be abutted against a joint of an external injector. According to the above design, the bone expanding device has a transverse expansion form and a longitudinal expansion form; the transverse expansion is formed by filling an airbag with an injection liquid; and the longitudinal expansion is realized through pushing the injection tube through the propelling device, pushing the injection tube against the inner wall of the front end of the expanding airbag and then driving the expanding airbag to do longitudinal expansion. The pressures of the expansion forms are controllable and the expansion travels can be controlled through the pressure and liquid volume.

Description

A kind of bone extension fixture

Technical field

The present invention relates to a kind of bone extension fixture for the treatment of osteopathia.

Background technology

Osteoporosis is that 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 caused because of osteoporosis especially comprises Drug therapy at the Therapeutic Method that vertebral body is traditional in compression fracture principal pathogenetic position, brace mechanicalness is supported, selectively pain therapy, therapeutic physical education etc., and surgical intervention comprises vertebral body reinforcement technology and open operation.

Technical scheme disclosed in prior art is as 200580029415-sequential dilator system, 200510094420-bone dilator, 200580000786-bone dilator, 201010513057-double-type saccule expander for orthopedics department operation.Above technical scheme does not all provide a total solution to solution bone expansion problem.

Summary of the invention

The invention provides a kind of bone extension fixture, realize the sizing to diseased region by lateral magnification and vertical expansion.

Object of the present invention carrys out 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 one end of guide pipe, the other end of guide pipe is connected with propulsion plant, it is inner that described syringe is positioned at described guide pipe, and described syringe is driven by described propulsion plant, syringe can dock with the joint of outer injectors to make described syringe through described propulsion plant.

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 is through 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 coordinates 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 provided with plug, and the rear end of inner core is connected with inner core handle, and described syringe is successively through plug, inner core, inner core hands handle;

Further, the contact internal walls of described plug and described trocar sheath also slidably rubs;

Further, described trocar sheath is set to flexible hose, and is provided with locking device on described trocar sheath, locks with the wall contacts of the inwall and inner core that make described trocar sheath;

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

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

Further, between described syringe and guide pipe, be provided with sealing ring, 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.

Through the bone extension fixture of 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 promotes syringe by propulsion plant, held out against by the front inner wall of syringe and expanded balloon, and then drive expanded balloon to do vertical expansion.The pressure controllable of expanded form, expansion stroke can be controlled by pressure and liquid capacity.

Accompanying drawing explanation

According to drawings and embodiments the present invention is described in further detail below.

Fig. 1 is the external structure of bone extension fixture described in the embodiment of the present invention.

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 of the described bone extension fixture with locking device.

In 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.

Detailed description of the invention

As Figure 1-5, bone extension fixture described in the embodiment of the present invention, comprise expanded balloon 1, syringe 2, guide pipe 3 and propulsion plant 4, described expanded balloon 1 is connected with one end of guide pipe 3, the other end of guide pipe 3 is connected with propulsion plant 4, it is inner that described syringe 2 is positioned at described guide pipe 3, and described syringe 2 is driven by described propulsion plant 4, syringe 3 can dock with the joint of outer injectors (not shown) to make described syringe 2 through described propulsion plant 4, by outer injectors, injection liquid is carried out to syringe 2, make the inner fill liquid of expanded balloon 1, expanded balloon 1 is stressed and expands outwardly, and then the object reached 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 is through described inner core 46, by the guide effect of trocar sheath 41, make described inner core 46 that syringe 2 can be driven to advance, reach the object of expanded balloon 1 being carried out to 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 coordinates with the external screw thread of described inner core 46, is made to realize spiral promotion between trocar sheath 41 and inner core 46 by threaded engagement, and the distance advanced realizes controllable operating;

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

Described plug 45 also slidably rubs with the contact internal walls of described trocar sheath 41, like this can so that operation between trocar sheath 41 and inner core 46, what make that inner core 46 can be free, stable does stretching motion in trocar sheath 41 inside, and the effect of rotatable engagement is reached by plug 45, improve the concentricity between trocar sheath 41 and inner core 46 by plug, improve the stability of operation;

Described trocar sheath 41 is set to flexible hose, and locking device 5 is provided with on described trocar sheath 41, lock with the wall contacts of the inwall and inner core 46 that make described trocar sheath 41, even if do not adopt when being threaded like this between trocar sheath 41 and inner core 46, also can interfix to trocar sheath 41 and inner core 46, contribute to the carrying out of injection operation;

Described locking device 5 has locking and opens two duties, in the locked condition, can not operate trocar sheath 41 and inner core 46; And free operant can be carried out to trocar sheath 41 and inner core 46 in the open state.

The front end of described syringe 2 is provided with the union joint 21 of round and smooth structure, and be provided with injection port 22 in the side, front end of described syringe 2, by the union joint 21 of round and smooth structure and the contact internal walls of expanded balloon 1 front end, the vertical expansion to expanded balloon 1 can be realized, and ensure not produce destructive damage to expanded balloon 1;

Sealing ring 31 is provided with between described syringe 2 and guide pipe 3, 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 guide pipe 3 by described sealing ring 31, ensure that syringe 2 is 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 end is less than the guide pipe diameter of extension mouth 32 rear end, described expanded balloon 1 is socketed on the guide pipe 3 of extension mouth 32 front end, can so that dock with expanded balloon 1 by extension mouth 32.

Claims

1. a bone extension fixture, it is characterized in that, comprise expanded balloon, syringe, guide pipe and propulsion plant, described expanded balloon is connected with one end of guide pipe, the other end of guide pipe is connected with propulsion plant, it is inner that described syringe is positioned at described guide pipe, and described syringe is driven by described propulsion plant, and syringe can dock with the joint of outer injectors to make described syringe through described propulsion plant;

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 is through described inner core.

2. bone extension fixture as claimed in claim 1, it 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 coordinates with the external screw thread of described inner core.

3. bone extension fixture as claimed in claim 2, it is characterized in that, the outside of described spacing ring is provided with operating grip, and the front end of described inner core is provided with plug, the rear end of inner core is connected with inner core handle, and described syringe is successively through plug, inner core, inner core handle.

4. bone extension fixture as claimed in claim 3, is characterized in that, the contact internal walls of described plug and described trocar sheath also slidably rubs.

5. the bone extension fixture according to any one of Claims 1-4, is characterized in that, described trocar sheath is set to flexible hose, and be provided with locking device on described trocar sheath, locks with the wall contacts of the inwall and inner core that make described trocar sheath.

6. bone extension fixture as claimed in claim 5, is characterized in that, described locking device has locking and opens two duties.

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

8. bone extension fixture as claimed in claim 7, it is characterized in that, between described syringe and guide pipe, be provided with sealing ring, 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.

9. 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.