CN206044667U

CN206044667U - A kind of pedicle of lumbar vertebral arch retractor

Info

Publication number: CN206044667U
Application number: CN201620741907.8U
Authority: CN
Inventors: 贺文
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-14
Filing date: 2016-07-14
Publication date: 2017-03-29
Anticipated expiration: 2026-07-14

Abstract

The utility model proposes a kind of pedicle of lumbar vertebral arch retractor, including the drag hook body that surface is smooth, the drag hook body includes：Head, U-shaped opening thereon are straddled on the transverse process of lumbar vertebra, and the left tooth and right tooth of its both sides are respectively used to prop up the outside of superior articular process and isthmus；The depth of the U-shaped opening is 10 15mm, and width is 15mm；The width of the left tooth and right tooth is 5mm, and the front end of the two is arc structure；Afterbody, which is provided with least one through hole；Body portion, overall structure are S-type, including the first segmental arc near the head and the second segmental arc near the afterbody.This utility model simple structure, it is reasonable in design, the U-shaped opening and bidentate size design of head is reasonable, during use, drag hook body can adapt to nearly all build crowd with transverse process of lumbar vertebra as fixed pivot, and versatility is good, very easily can be applied in pedicle of lumbar vertebral arch screw placement fixation, good operation effect.

Description

A kind of pedicle of lumbar vertebral arch retractor

Technical field

This utility model is related to technical field of medical instruments, more particularly, to a kind of pedicle of lumbar vertebral arch retractor.

Background technology

Posterior lumbar spinal instrumentation is widely used to clinic, and become more meticulous and the finite process of operation become sending out for spinal surgery How exhibition direction, in lumbar vertebral posterior internal fixation operation, effectively retract soft tissue, appear pedicle screw access point and have Effect is set up screw placement passage to facilitate operation technique, is the direction that spinal surgery doctor makes great efforts.In traditional open surgery mistake Cheng Zhong, the extensive stripping of muscle, muscular fasciae and ligament and is pulled for a long time repeatedly, causes postoperative muscle ischemic necrosis and fiber Change, so as to cause postoperative long-term intractable lower back stiff and pain, caused the extensive concern of scholars.How to reduce and The iatrogenic injury mitigated in thoracic and lumbar vertebral posterior operative process becomes a difficult problem clinically urgently to be resolved hurrily.

The content of the invention

This utility model is intended to overcome defect present in above-mentioned prior art, it is proposed that a kind of pedicle of lumbar vertebral arch is retracted Device.

What the technical solution of the utility model was realized in：

A kind of pedicle of lumbar vertebral arch retractor, including the drag hook body that surface is smooth, the drag hook body include：

Head, U-shaped opening thereon are straddled on the transverse process of lumbar vertebra, and the left tooth and right tooth of its both sides are respectively used to prop up The outside of articular process and isthmus；The depth of the U-shaped opening is 10-15mm, and width is 15mm；The width of the left tooth and right tooth 5mm is, and the front end of the two is arc structure；

Afterbody, which is provided with least one through hole；

Body portion, overall structure are S-type, second including the first segmental arc near the head and near the afterbody Segmental arc.

Further, the central angle of first segmental arc is 100 °.

Further, the transition face different from work surface side is provided with first segmental arc.

Further, the central angle of second segmental arc is 150 °.

Further, the width of the drag hook body is 25mm, and thickness is 2mm.

Further, the projected length of the drag hook body is 300mm.

Further, the bearing of trend of the head and the tangential direction angle of first segmental arc are 15 °.

Further, the curved structure in cross section in the body portion.

Further, the drag hook body adopts corrosion resistant plate or chrome faced steel plate.

Above-mentioned technical proposal is employed, the beneficial effects of the utility model are：

This utility model simple structure, it is reasonable in design, the U-shaped opening of head and bidentate design, be through to lumbar vertebra Skeleton specimen and different building shape patient's waist soft tissue thickness carry out observing, measure on the basis of draw, size design rationally, During use, drag hook body can adapt to nearly all build crowd with transverse process of lumbar vertebra as fixed pivot, and versatility is good, Neng Goufei Often it is conveniently applied in pedicle of lumbar vertebral arch screw placement fixation, good operation effect.

Description of the drawings

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.

Fig. 1 is positive structure schematic of the present utility model；

Fig. 2 is side structure schematic diagram of the present utility model；

Fig. 3 is body cross section schematic diagram in this utility model.

Wherein：

1- drag hook bodies；2- heads；3-U type openings；The left teeth of 4-；The right teeth of 5-；6- arc structures；7- afterbodys；8- through holes；9- Body portion；The first segmental arcs of 10-；The second segmental arcs of 11-.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of this utility model protection.

A kind of pedicle of lumbar vertebral arch retractor, as shown in Figure 1 to Figure 3, including the drag hook body 1 that surface is smooth, the drag hook Body 1 includes：

Head 2, U-shaped opening 3 thereon are straddled on the transverse process of lumbar vertebra, the left tooth 4 and right tooth 5 of its both sides be respectively used to Live in the outside of articular process and isthmus；The depth of the U-shaped opening 3 is 10-15mm, and width is 15mm；The left tooth 4 and right tooth 5 width is 5mm, and the front end of the two is arc structure 6；

Afterbody 7, which is provided with least one through hole 8, by the use of the through hole 8 as hole is hooked, can store this lumbar vertebra vertebra During nut retractor, hooked using hook or lanyard, it is to avoid be infected with germs, in addition, in art, it is also possible to carried out using rope etc. Drawing, auxiliary positioning are fixed, and save manpower；

Body portion 9, overall structure is S-type, including near head 2 the first segmental arc 10, and near afterbody 7 the second segmental arc 11。

It is pointed out that the front end of left tooth 4 and right tooth 5 is arc structure 6, it is to avoid propping up superior articular process and gorge Tissue is damaged during the outside in portion.

The central angle of first segmental arc 10 is 100 °.The central angle of second segmental arc 11 is 150 °.The generally drawing The width of hook body 1 is 25mm, and thickness is 2mm.The projected length of the drag hook body 1 is 300mm.The size design meets people Body construction featuress, also, when in use, it is easy to operation and hold, to using bringing good convenience.

Wherein, the bearing of trend of the head 2 and the tangential direction angle of first segmental arc 10 are 15 °, and the angle is most Suitable operation technique, after assistant presses tail end, tail end will not be interfered to operation.

Wherein, the curved structure in cross section in the body portion 9, can avoid the seamed edge in body portion 9 from causing to scrape to patient body Touch incised wound.

Wherein, the drag hook body 1 adopts corrosion resistant plate or chrome faced steel plate, durable, anticorrosive, Er Qieyi In cleaning, clean hygiene.

During operation, first make lumbar vertebra median incision, peel off erector spinae from spinous process and lamina surface, appear vertebral plate, articular process and Transverse process, the U-shaped opening of drag hook body 1 is ridden on transverse process, and the left tooth and right tooth of its head end withstand on superior articular process and gorge respectively The outside in portion, its tail end carry out pressing fixation by assistant.

This utility model simple structure, reasonable in design, the depth of the U-shaped opening 3 of head is 10-15mm, and width is 15mm； The width of left tooth 4 and right tooth 5 is 5mm, and the front end of the two is arc structure 6, and this size is through the skeleton to lumbar vertebra Specimen and different building shape patient's waist soft tissue thickness carry out observing, measure on the basis of draw, the waist of different building shape patient Vertebra transverse process structure is constant, and each transverse process of lumbar vertebra profile is basically identical, and transverse process is big to distance, space between spinous process, can be used as drag hook Fulcrum effectively retracts soft tissue, fully appears lumbar vertebra organization in the rear structure.During use, drag hook body 1 is with transverse process of lumbar vertebra as fixation Fulcrum, can adapt to nearly all build crowd, and versatility is good, can very easily be applied to pedicle of lumbar vertebral arch screw placement In fixation, good operation effect.

Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in this utility model Protection domain within.

Claims

1. a kind of pedicle of lumbar vertebral arch retractor, it is characterised in that：Including the drag hook body that surface is smooth, the drag hook body bag Include：

Head, U-shaped opening thereon are straddled on the transverse process of lumbar vertebra, and the left tooth and right tooth of its both sides are respectively used to prop up upper joint The outside of prominent and isthmus；The depth of the U-shaped opening is 10-15mm, and width is 15mm；The width of the left tooth and right tooth is 5mm, and the front end of the two is arc structure；

Afterbody, which is provided with least one through hole；

Body portion, overall structure are S-type, including the first segmental arc near the head and the second segmental arc near the afterbody.

2. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The central angle of first segmental arc For 100 °.

3. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The drag hook body is using stainless Steel plate or chrome faced steel plate.

4. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The central angle of second segmental arc For 150 °.

5. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The width of the drag hook body is 25mm, thickness are 2mm.

6. a kind of pedicle of lumbar vertebral arch retractor according to claim 1 or 5, it is characterised in that：The throwing of the drag hook body Shadow length is 300mm.

7. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The bearing of trend of the head with The tangential direction angle of first segmental arc is 15 °.

8. a kind of pedicle of lumbar vertebral arch retractor according to claim 1, it is characterised in that：The cross section in the body portion is in arc Shape structure.