CN109009273A

CN109009273A - A kind of extension fixture for bone surgery

Info

Publication number: CN109009273A
Application number: CN201810750257.7A
Authority: CN
Inventors: 吴飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2018-12-18

Abstract

The invention discloses a kind of extension fixtures for bone surgery, belong to medical instruments field, including expansion arm one, expansion arm two and linear gear rack, the expansion arm one and expansion arm two are hinged by pin shaft, expansion arm one, expansion arm two pass through the shape of the hinged similar scissors of pin shaft, jaw is arranged in the front end of the expansion arm one and expansion arm two, the direction of jaw is outwardly, the hinged linear gear rack of tail inner side of the expansion arm two, the tail portion of linear gear rack is connect with resilient strips one, and resilient strips one and linear gear rack are L-shaped.Extension fixture for bone surgery of the invention is when carrying out bone-operating for expanding bone adjacent to each other when especially spinal operation, this extension fixture can be with one-handed performance, this extension fixture is not easy to unclamp after being softened, this extension fixture structure is simple and easily operated.

Description

A kind of extension fixture for bone surgery

Technical field

The present invention relates to medical instruments fields, specifically, the present invention relates to a kind of extension fixtures for bone surgery.

Background technique

It needs to separate on the bone that two link together in bone surgery, to retract tissue, appearing needs range of operation, Convenient for detecting and operating, this instrument for expanding tissue is medically retractor, retractor can be divided into hand-held drag hook and Two class of self-retractor.There is the specification of various different shapes and size, can be needed to select suitable drag hook according to operation.Use drag hook When, correct tenaculum method and application method should be grasped, saline gauze pad or wet treatment towel should be padded below drag hook, especially existed It more should be noted that using when abdominal cavity retractor.Dressing liner can help to appear operating field, protect peripheral organs and tissue from damage. When using hand-held drag hook, drawing-in motion should be soft, avoids overexerting, adjusts drawing in time according to the intention of patient and procedure The position of hook is most preferably appeared with reaching.Existing retractor needs more people or at least needs two hand compounding practices at present, It is inconvenient for operation in nervous surgical procedure.

Summary of the invention

Technical problem to be solved by the invention is to provide it is a kind of for during bone surgery expansion bone device, The device is especially suitable for spinal operation.

In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: a kind of expansion for bone surgery Device, including expansion arm one, expansion arm two and linear gear rack, the expansion arm one and expansion arm two are hinged on one by pin shaft Rise, expansion arm one, expansion arm two by the shape of the hinged similar scissors of pin shaft, the expansion arm one and expansion arm two Front end be arranged jaw, the direction of jaw outwardly, the hinged linear gear rack of tail inner side of the expansion arm two, the tail of linear gear rack Portion is connect with resilient strips one, and resilient strips one and linear gear rack are L-shaped, and the junction of resilient strips one and linear gear rack is hinged on expansion Stretch one's arms two tail inner side, one side external surface of linear gear rack be arranged row's slip teeth, the tail portion of the expansion arm one, which is bent outwardly, prolongs It stretches, multiple tracks sliding slot is arranged in the trailing exterior surface of expansion arm one, and sliding slot is used cooperatively with slip teeth, the feelings that sliding slot is squeezed in no external force It can be stuck in slip teeth under condition.

Preferably, the tail portion of the expansion arm one to pin shaft distance be greater than pin shaft to jaw distance, expansion arm one Tail portion curves inwardly to the part between pin shaft.

Preferably, the tail portion of the expansion arm two to pin shaft distance be greater than pin shaft to jaw distance, expansion arm two Tail portion curves inwardly to the part between pin shaft.

Preferably, further include resilient strips two, the resilient strips two are fixed in the inner webs of expansion arm one, resilient strips two with Resilient strips one are corresponding to be staggered, and when being compressed by external force, the front of resilient strips two is against on the inner sidewall of expansion arm two, returns The front end of spring one is against on the inner sidewall of expansion arm one.

Using technical solution of the present invention, can obtain it is below the utility model has the advantages that

Extension fixture for bone surgery of the invention is when carrying out bone-operating for expanding that when especially spinal operation This adjacent bone, this extension fixture are not easy to unclamp after being softened with one-handed performance, this extension fixture, this extension fixture knot Structure is simple and easily operated.

Detailed description of the invention

Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:

Fig. 1 is this extension fixture closed state structural schematic diagram；

Fig. 2 is this extension fixture expansion state structural schematic diagram；

Label in above-mentioned figure is equal are as follows: 1, expansion arm one；2, expansion arm two；3, linear gear rack；4, slip teeth；5, sliding slot；6, it springs back Item one；7, resilient strips two；8, pin shaft；9, jaw.

Specific embodiment

Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further Detailed description.

As shown in Figure 1, 2, this includes expansion arm 1, expansion arm 22 and linear gear rack for the extension fixture of bone surgery 3, expansion arm 1 and expansion arm 22 are hinged by pin shaft 8, and expansion arm 1, expansion arm 22 are hinged on by pin shaft 8 Together similar to the shape of scissors, the front end setting jaw 9 of expansion arm 1 and expansion arm 22, the direction of jaw 9 outwardly, is expanded The hinged linear gear rack 3 of the tail inner side of arm 22, the tail portion of linear gear rack 3 are connect with resilient strips 1, resilient strips 1 and linear teeth Item 3 is L-shaped, and the junction of resilient strips 1 and linear gear rack 3 is hinged on the tail inner side of expansion arm 22, linear gear rack 3 one Row's slip teeth 4 is arranged in side external surface, and the tail portion of expansion arm 1 is bent outwardly extension, and the trailing exterior surface setting of expansion arm 1 is more Road sliding slot 5, sliding slot 5 are used cooperatively with slip teeth 4, and sliding slot 5 can be stuck in slip teeth 4 in the case where no external force squeezes.

As shown in Figure 1, the distance of the tail portion of expansion arm 1 to pin shaft 8 is greater than the distance that pin shaft 8 arrives jaw 9, expansion arm one 1 tail portion curves inwardly to the part between pin shaft 8.The distance of the tail portion of expansion arm 22 to pin shaft 8 is greater than pin shaft 8 and arrives jaw 9 Distance, the tail portion of expansion arm 22 curves inwardly to the part between pin shaft 8.

As shown in Figure 1, 2, resilient strips 27 are additionally provided with, resilient strips 27 are fixed in the inner webs of expansion arm 1, resilient strips 27 it is corresponding with resilient strips 1 be staggered, when being compressed by external force, the front of resilient strips 27 is against the inside of expansion arm 22 On wall, the front end of resilient strips 1 is against on the inner sidewall of expansion arm 1.

It is as shown in Figure 1 extension fixture closed state structural schematic diagram, when use first pulls linear gear rack 3 upwards, expands Arm 1 flicks outward under the action of resilient strips 1 and resilient strips 27, and extension fixture is closed at this time, and jaw 9 is aligned and is needed Between two pieces of bones of expansion, expansion arm 1 is then pressed into expansion arm 22 with hand, the sliding slot 5 of one 1 tail portion of expansion arm is outside Slided in slip teeth 4 under the action of power, when two jaws 9 be expanded to needs apart from when, stop external force companding stretch one's arms, slide at this time Slot 5 is stuck in complete skeletogenous traction work in slip teeth 4, traction work of the present apparatus especially suitable for backbone bone.

The resilient strips 1 and linear gear rack 3 of the present apparatus are L-shaped, and when hand is to internal pressure, expansion arm 1 drives resilient strips one 6, resilient strips 1 drive linear gear rack 3, linear gear rack 3 are pulled open outward, linear gear rack 3 also drives resilient strips 1 to spring back outward into Expansion arm 1 is flicked, resilient strips 1 and linear gear rack 3 are similar to seesaw, with the hinge joint of 22 tail inner side of expansion arm Centered on turn round.

For expanding bone adjacent to each other when the particularly suitable spinal operation of this bone surgery extension fixture, it is suitble to retract body The lesser bone of product is suitable for minor cut or wound Micro-operation patients surgery comfort and improves, this extension fixture can be with one-handed performance, quilt Be not easy after strutting unclamp and it is easy to operate.

The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.

Claims

1. a kind of extension fixture for bone surgery, it is characterised in that: including expansion arm one, expansion arm two and linear gear rack, The expansion arm one and expansion arm two are hinged by pin shaft, and expansion arm one, expansion arm two are hinged by pin shaft The front end of the shape of similar scissors, the expansion arm one and expansion arm two is arranged jaw, the direction of jaw outwardly, the expansion The tail portion of the hinged linear gear rack of the tail inner side of arm two, linear gear rack is connect with resilient strips one, and resilient strips one are in linear gear rack The junction of L shape, resilient strips one and linear gear rack is hinged on the tail inner side of expansion arm two, and one side external surface of linear gear rack is set Row's slip teeth is set, the tail portion of the expansion arm one is bent outwardly extension, and multiple tracks sliding slot is arranged in the trailing exterior surface of expansion arm one, sliding Slot is used cooperatively with slip teeth, and sliding slot can be stuck in slip teeth in the case where no external force squeezes.

2. the extension fixture according to claim 1 for bone surgery, it is characterised in that: the tail portion of the expansion arm one Distance to pin shaft is greater than pin shaft to the distance of jaw, and the tail portion of expansion arm one curves inwardly to the part between pin shaft.

3. the extension fixture according to claim 1 for bone surgery, it is characterised in that: the tail portion of the expansion arm two Distance to pin shaft is greater than pin shaft to the distance of jaw, and the tail portion of expansion arm two curves inwardly to the part between pin shaft.

4. the extension fixture according to claim 1 for bone surgery, it is characterised in that: further include resilient strips two, institute It states resilient strips two to be fixed in the inner webs of expansion arm one, resilient strips two are corresponding with resilient strips one to be staggered, when by external force The front of resilient strips two is against on the inner sidewall of expansion arm two when compression, and the front end of resilient strips one is against the inside of expansion arm one On wall.