CN204428088U - A kind of low incisura fixable type arc nerve hook - Google Patents
A kind of low incisura fixable type arc nerve hook Download PDFInfo
- Publication number
- CN204428088U CN204428088U CN201520029357.2U CN201520029357U CN204428088U CN 204428088 U CN204428088 U CN 204428088U CN 201520029357 U CN201520029357 U CN 201520029357U CN 204428088 U CN204428088 U CN 204428088U
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- drag hook
- loop bar
- hook
- adjusting rod
- type arc
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Abstract
The utility model discloses a kind of low incisura fixable type arc nerve hook, comprise handle and drag hook portion, described drag hook portion is arranged on handle front end, comprises the stayed pole of connecting rod and the setting of connecting rod front end, the adjustable in length of stayed pole, the front end of stayed pole is provided with drag hook; Stayed pole is set with fixing head, fixing head offers the skewed slot penetrating fixing head.This utility model structure is simple, it is fixing after nerve is pulled to assigned address, operator only need help handle to make it keep fixed position to get final product (or being ridden on otch offside skin by drag hook handle), without the need to exerting a force to it again, drag hook body also can not be moved because of anthropic factor, operating position is accurate, safe and reliable.
Description
Technical field
This utility model relates to a kind of medical surgical instrument, is specifically related to a kind of low incisura fixable type arc nerve hook, is mainly used in prolapse of lumbar intervertebral disc PLIF and performs the operation.
Background technology
At present, PLIF surgical exposure responsibility intervertebral space (intervertebral disc) after finding nerve root, nerve root and dural sac are pulled open with nerve hook by assistant, exposes the fibrous ring of intervertebral disc, then carries out the process of intervertebral space.In art, when patient processes intervertebral space, occasional encounters nerve hook, nerve hook is moved, causes nerve injury.
Can not change for making the position of nerve hook, assistant need keep a posture and exert a force to nerve hook all the time, adhere to that, implantation Invasive lumbar fusion device complete to process intervertebral space terminates, not only require great effort, and easily owing to keeping for a long time, same posture causes disease of hand, nerve hook moves, touching is neural, causes serious consequence.In addition, the body of nerve hook often can operate to be formed to patient and stop, the operation of interference patient.
Nerve root retractor common is clinically relatively simple for structure, is grouped into by the handle of rear end and the pulling portion of front end, and tractive part and handle can have certain angle.Pulling portion is divided into " one " word-lifting formula, nerve root can not be adapted to after dural sac sets out in the radian of about 30--45 ° in traction process, often form a direct shearing force at drag hook edge and nerve root contact position, tractive is too exerted oneself or tractive overlong time, easily make nerve root produce iatrogenic injury, consequence is more serious.
Summary of the invention
For above-mentioned problems of the prior art, the purpose of this utility model is, provide a kind of operating position accurately, pull laborsaving, safe and reliable scalable, the fixable nerve hook of low incisura.
In order to realize above-mentioned task, this utility model by the following technical solutions:
A kind of low incisura fixable type arc nerve hook, comprise handle and drag hook portion, described drag hook portion is arranged on handle front end, and comprise the stayed pole of connecting rod and the setting of connecting rod front end, the adjustable in length of stayed pole, the front end of stayed pole is provided with drag hook; Stayed pole is set with fixing head, fixing head offers the skewed slot penetrating fixing head.
Further, described stayed pole is two parts, comprises the hollow loop bar that is connected with stayed pole front end and part and extend into adjusting rod in loop bar, and adjusting rod can sliding axially relative to loop bar; Described drag hook is arranged on the front end of adjusting rod.
Further, described loop bar inside is provided with cock, and cock is provided with external screw thread, loop bar inwall is provided with the female thread coordinated with external screw thread, and cock top is fixedly connected with the bull stick stretched out outside loop bar, and bull stick is provided with knob; Adjusting rod bottom cock described in movable connection.
Further, described adjusting rod top connects a rotating disk extend into bottom cock by connecting axle, and rotating disk can rotate in cock.
Further, described adjusting rod is provided with clamp, loop bar inwall is provided with the draw-in groove coordinated with clamp.
Further, described drag hook is flat, and the thickness of drag hook is along the direction convergent near drag hook front end.
Further, the front end edge of described drag hook bends away from the directional smoothing of adjusting rod, and when adjusting rod is perpendicular to horizontal plane, the angle between drag hook front end and horizontal plane is 25 °.
Further, described fixing head is cemented in loop bar outside, and the plate face of fixing head is axially vertical with loop bar; Skewed slot on fixing head at least arranges a pair, is distributed in loop bar both sides.
Further, a pair skewed slot longitudinal cross-section of described loop bar both sides is splayed.
Further, described handle is provided with wave depression.
This utility model has following technical characterstic:
1. adopt the handle design structure of depression wave anti-slip veins, make the gripping of nerve hook convenient, meet ergonomics, convenient operation;
2. the end position scalable of nerve hook, for different situations, can adjust position easily, make nerve hook have better practicality;
3. the end of nerve hook is flat oblique design, makes drag hook front end can meet the angle of nerve root after dural sac sends, in use can avoid nerve root injury;
4. structure is simple, it is fixing after nerve is pulled to assigned address, operator only need help handle to make it keep fixed position to get final product (or being ridden on otch offside skin by drag hook handle), without the need to exerting a force to it again, drag hook body also can not be moved because of anthropic factor, operating position is accurate, safe and reliable.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the longitudinal sectional view of stayed pole part;
Number in the figure represents: 1-handle, 11-depression, 2-connecting rod, 3-knob, 31-bull stick, 32-cock, 4-stayed pole, 41-loop bar, 42-adjusting rod, 43-rotating disk, 44-connecting axle, 45-female thread, 46-clamp, 5-staple, 6-fixing head, 7-drag hook.
Detailed description of the invention
Traditional nerve hook structure is simple, needs assistant to grip for a long time and keep same posture during operation, careless slightlyly affects nerve, cause nerve injury, and the design of the end of drag hook is also unreasonable, easily makes injured nerve root.For these problems, a kind of convenient fixing, adjustable nerve hook is proposed in this programme:
A kind of low incisura fixable type arc nerve hook, comprise handle 1 and drag hook portion, described drag hook portion is arranged on handle 1 front end, and comprise the stayed pole 4 of connecting rod 2 and the setting of connecting rod 2 front end, the adjustable in length of stayed pole 4, the front end of stayed pole 4 is provided with drag hook 7; Stayed pole 4 is set with fixing head 6, fixing head 6 offers the skewed slot penetrating fixing head 6.
Handle 1 is arranged on the rear end in drag hook portion, and drag hook portion comprises two parts, the connecting rod 2 identical in opposite directions with handle 1 length, and the stayed pole 4 arranged in connecting rod 2 front end.Stayed pole 4 and connecting rod 2 be not on same straight line, and angle is between the two advisable with 90 °, facilitates the drag hook 7 of front end to operate, and also can adopt other angle according to actual operation demand.The length of stayed pole 4 can regulate, to adjust the position of front end drag hook 7.Drag hook 7 is arranged on stayed pole 4 foremost, can regulate distance between drag hook 7 to connecting rod 2 like this, make drag hook 7 can adapt to the physiological structure of different patient and the tractive requirement of operation completely according to the position of dural sac and cone.The fixing head 6 of suit on stayed pole 4, its effect is in order to fixing whole nerve hook.The skewed slot that fixing head 6 is offered, in operation process, after setting drag hook 7 position, can utilize staple 5 through skewed slot, hammers in cone, thus the position of fixing head 6 is fixed, also just maintain the stable of whole nerve hook position.In this way, no longer need the long-time gripping handle 1 of assistant, and fixing very firm, also can not change drag hook 7 position easily even if touch, avoid to a great extent and move due to drag hook 7 position and the nerve injury that causes, ensure that operation is carried out smoothly.
In this programme:
Stayed pole 4 is two parts, comprises the hollow loop bar 41 that is connected with stayed pole 4 front end and part and extend into adjusting rod 42 in loop bar 41, and adjusting rod 42 can sliding axially relative to loop bar 41; Described drag hook 7 is arranged on the front end of adjusting rod 42.
Stayed pole 4 is two-part structure, to meet the requirement of its adjustable in length.Two parts of stayed pole 4 are loop bar 41 and adjusting rod 42 respectively, and wherein loop bar 41 is hollow, and a part for adjusting rod 42 extend into loop bar 41 from lower end, can move axially, be similar to Telescopic rod structure along loop bar 41; Drag hook 7 is arranged on adjusting rod 42 front end, when adjusting rod 42 moves, drives close or away from connecting rod 2 the direction of drag hook 7 to move, to adjust the position of drag hook 7.
Loop bar 41 inside is provided with cock 32, and cock 32 is provided with external screw thread, loop bar 41 inwall is provided with the female thread 45 coordinated with external screw thread, and cock 32 top is fixedly connected with the bull stick 31 stretched out outside loop bar 41, bull stick 31 is provided with knob 3; Adjusting rod 42 bottom cock 32 described in movable connection.
The regulative mode of concrete adjusting rod 42 is realized by cock 32.Cock 32 is moved by loop bar 41 inside that is engaged in of screw thread: knob 3 is arranged on above connecting rod 2, convenient adjustment, turn knob 3, bull stick 31 is driven to rotate, bull stick 31 rotates and cock 32 is moved in loop bar 41, drive adjusting rod 42 to move in the process of movement, so just serve the effect regulating drag hook 7 position.
Adjusting rod 42 top connects a rotating disk 43 extend into bottom cock 32 by connecting axle 44, and rotating disk 43 can rotate in cock 32.
As shown in Figure 2, a cavity is had bottom cock 32, wherein be equipped with rotating disk 43, rotating disk 43 can not be deviate from from cavity, and on cavity, be provided with a hole, and connecting axle 44 is through this hole, one end connects rotating disk 43, one end connects adjusting rod 42, so when cock 32 position changes, will drive adjusting rod 42 moving axially along loop bar 41.
Adjusting rod 42 is provided with clamp 46, loop bar 41 inwall is provided with the draw-in groove coordinated with clamp 46.
Rotate to prevent drag hook 7 in the process regulated, adjusting rod 42 is provided with clamp 46, loop bar 41 inwall axially offers draw-in groove along it, due to cooperation and the restriction of clamp 46, draw-in groove, drive rotating disk 43 to move when cock 32 is moved, then drive adjusting rod 42 to move by connecting axle 44; This process turntable 43 can rotate, but adjusting rod 42 can not rotate, the situation that the drag hook 7 that this guarantees adjusting rod 42 end can not rotate.
Drag hook 7 is flat, and the thickness of drag hook 7 is along the direction convergent near drag hook 7 front end.The front end edge of drag hook 7 bends away from the directional smoothing of adjusting rod 42, and when adjusting rod 42 is perpendicular to horizontal plane, the angle between drag hook 7 front end and horizontal plane is 25 °.
As shown in Figure 1, drag hook 7 is flat, and front end bending, thickness is towards end direction convergent.When drag hook 7 uses, extend between dural sac and cone, involve intervertebral disc; And nerve root can in the radian of about 30 ~ 45 ° after dural sac sets out, in order to adapt to this radian, be convenient to tractive, suppose that with dural sac contact surface be horizontal plane, when so adjusting rod 42 points to horizontal plane, angle between drag hook 7 front end and horizontal plane is about 25 °, can carry out tractive well like this, can not cause stress damage again to nerve root.
It is outside that fixing head 6 is cemented in loop bar 41, and the plate face of fixing head 6 is axially vertical with loop bar 41; Skewed slot on fixing head 6 at least arranges a pair, is distributed in loop bar 41 both sides.A pair skewed slot longitudinal cross-section of loop bar 41 both sides is splayed.
The effect of fixing head 6 is fixing drag hooks 7, is provided with multipair skewed slot.Skewed slot refers to the groove passing the formation of fixing head 6 lower surface from fixing head 6 upper surface along the direction away from loop bar 41, if by a pair skewed slot longitudinally cutting, then its structure is splayed, as shown in Figure 2.After such staple 5 squeezes into cone from skewed slot, owing to tilting to squeeze into, staple 5 can be embedded in cone more securely, even if drag hook 7 is subject to touching also can not change position easily, play good fixation.Skewed slot can arrange multipair.
Handle 1 is provided with wave depression 11.
Gripping when operating for the ease of handle 1, handle 1 is provided with the depression 11 adapted with hand, and depression 11, in wavy, increases friction, handled easily.
Using method:
Patient exposed intervertebral disc, clear appear dural sac and nerve root after, dural sac and nerve root pulled open gently to close to center line with nerve hook.To squeeze in upper hypocentrum from skewed slot with supporting staple and carry out drag hook and fix; Rotary knob, foreshortens to handle and rides on otch offside skin, then carry out operation technique by stayed pole.
Claims (10)
1. one kind low incisura fixable type arc nerve hook, comprise handle (1) and drag hook portion, it is characterized in that, described drag hook portion is arranged on handle (1) front end, comprise the stayed pole (4) of connecting rod (2) and the setting of connecting rod (2) front end, the adjustable in length of stayed pole (4), the front end of stayed pole (4) is provided with drag hook (7); Stayed pole (4) is set with fixing head (6), and (6) offer the skewed slot penetrating fixing head (6) with fixing head.
2. low incisura fixable type arc nerve hook as claimed in claim 1, it is characterized in that, described stayed pole (4) is two parts, comprise the hollow loop bar (41) that is connected with stayed pole (4) front end and part and extend into adjusting rod (42) in loop bar (41), adjusting rod (42) can sliding axially relative to loop bar (41); Described drag hook (7) is arranged on the front end of adjusting rod (42).
3. low incisura fixable type arc nerve hook as claimed in claim 2, it is characterized in that, described loop bar (41) inside is provided with cock (32), (32) are provided with external screw thread in cock, loop bar (41) inwall is provided with the female thread (45) coordinated with external screw thread, cock (32) top is fixedly connected with the bull stick (31) stretched out outside loop bar (41), bull stick (31) is provided with knob (3); The adjusting rod (42) of cock (32) bottom described in movable connection.
4. low incisura fixable type arc nerve hook as claimed in claim 3, it is characterized in that, described adjusting rod (42) top connects by connecting axle (44) rotating disk (43) that extend into cock (32) bottom, and rotating disk (43) can rotate in cock (32).
5. low incisura fixable type arc nerve hook as claimed in claim 2, it is characterized in that, described adjusting rod (42) is provided with clamp (46), loop bar (41) inwall is provided with the draw-in groove coordinated with clamp (46).
6. low incisura fixable type arc nerve hook as claimed in claim 1, it is characterized in that, described drag hook (7) is flat, and the thickness of drag hook (7) is along the direction convergent near drag hook (7) front end.
7. low incisura fixable type arc nerve hook as claimed in claim 6, it is characterized in that, the front end edge of described drag hook (7) bends away from the directional smoothing of adjusting rod (42), when adjusting rod (42) is perpendicular to horizontal plane, the angle of drag hook (7) between front end and horizontal plane is 25 °.
8. low incisura fixable type arc nerve hook as claimed in claim 2, it is characterized in that, it is outside that described fixing head (6) is cemented in loop bar (41), and the plate face of fixing head (6) is axially vertical with loop bar (41); Skewed slot on fixing head (6) at least arranges a pair, is distributed in loop bar (41) both sides.
9. low incisura fixable type arc nerve hook as claimed in claim 8, it is characterized in that, a pair skewed slot longitudinal cross-section of described loop bar (41) both sides is splayed.
10. low incisura fixable type arc nerve hook as claimed in claim 1, is characterized in that, described handle (1) is provided with wave depression (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029357.2U CN204428088U (en) | 2015-01-15 | 2015-01-15 | A kind of low incisura fixable type arc nerve hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029357.2U CN204428088U (en) | 2015-01-15 | 2015-01-15 | A kind of low incisura fixable type arc nerve hook |
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| Publication Number | Publication Date |
|---|---|
| CN204428088U true CN204428088U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520029357.2U Expired - Fee Related CN204428088U (en) | 2015-01-15 | 2015-01-15 | A kind of low incisura fixable type arc nerve hook |
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| CN (1) | CN204428088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108553136A (en) * | 2018-04-12 | 2018-09-21 | 江苏省人民医院（南京医科大学第附属医院） | Outer side drag hook for cervical vertebra operation |
| CN112244909A (en) * | 2020-10-28 | 2021-01-22 | 中国人民解放军联勤保障部队第九二〇医院 | Spinal nerve distraction device |
| CN115813393A (en) * | 2022-11-17 | 2023-03-21 | 广西中医药大学第一附属医院 | Spinal nerve root tension measuring instrument |
-
2015
- 2015-01-15 CN CN201520029357.2U patent/CN204428088U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108553136A (en) * | 2018-04-12 | 2018-09-21 | 江苏省人民医院（南京医科大学第附属医院） | Outer side drag hook for cervical vertebra operation |
| CN112244909A (en) * | 2020-10-28 | 2021-01-22 | 中国人民解放军联勤保障部队第九二〇医院 | Spinal nerve distraction device |
| CN112244909B (en) * | 2020-10-28 | 2021-11-05 | 中国人民解放军联勤保障部队第九二〇医院 | Spinal nerve distraction device |
| CN115813393A (en) * | 2022-11-17 | 2023-03-21 | 广西中医药大学第一附属医院 | Spinal nerve root tension measuring instrument |
| CN115813393B (en) * | 2022-11-17 | 2023-07-25 | 广西中医药大学第一附属医院 | Spinal nerve root tension measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20180115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |