CN206355129U - It is a kind of can be with the hollow screw screwdriver of fixation guide pin - Google Patents
It is a kind of can be with the hollow screw screwdriver of fixation guide pin Download PDFInfo
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- CN206355129U CN206355129U CN201621043811.0U CN201621043811U CN206355129U CN 206355129 U CN206355129 U CN 206355129U CN 201621043811 U CN201621043811 U CN 201621043811U CN 206355129 U CN206355129 U CN 206355129U
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- handle
- base
- guide pin
- screwdriver
- sleeve pipe
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Abstract
It is a kind of orthopedic medical device technical field to be belonged to the hollow screw screwdriver of fixation guide pin, for preventing guide pin from rotating and being moved forward with hollow screw.Its technical scheme is：Screwdriver handle is the bi-body structure being made up of handle and base, base is located at the rear portion of handle, there is sleeve pipe base upper end, the lower end of sleeve pipe is connected with the guide pinhole of base, there is the collar aperture along guide pin axially bored line in handle, at its lower end face, the internal diameter of collar aperture and the external diameter of sleeve pipe match, in collar aperture insertion handle of the sleeve pipe of base along handle, at its lower end, the guide pinhole internal diameter of the internal diameter of sleeve pipe and base and handle matches, hold out against screw in the side of base, puller bolt is held out against with the guide pin in guide pinhole through holding out against screw.The utility model is in hollow screw precession, and guide pin will not advance therewith, it is to avoid guide pin wears out forward femoral head and destroys articular surface, or even can penetrate the accident of pelvic cavity and occur.The utility model is simple in construction, easy to use, it is ensured that operation safety, improves surgical quality.
Description
Technical field
The utility model is related to a kind of hollow screw screwdriver of the guide pin of fixation for treatment fracture of neck of femur, belongs to orthopaedic medical treatment
Technique with the apparatus field.
Background technology
With aging population, the patient for suffering from fracture of neck of femur is continuously increased, closed reduction hollow screw treatment femur
The operation method of fracture of cervical vertebra has the advantages that wound is small, avoid joint replacement.In the operation technique of traditional treatment fracture of neck of femur
In method, first insert and hollow screw is inserted after guide pin, because guide pin diameter is slightly less than hollow nail internal diameter, hollow screw is along before guide pin
Guide pin should be unable to be moved when entering.However, during actual operation, due to the insertion of bone tissue, make guide pin and hollow screw it
Between frictional force increase, the situation for causing guide pin to follow hollow screw and screwdriver to move forward together happens occasionally.Due to hollow
The screw position to be reached is close from femur facies articularis capituli, is at this moment in hollow screw front portion and is moved forward with hollow screw
Guide pin will wear out femoral head and destroy articular surface, or even pelvic cavity can be penetrated, cause accident surgery and cause severe complication.
Therefore how to prevent guide pin is moved when inserting hollow screw to be to treat in fracture of neck of femur operation to need the important of solution
Problem.
Utility model content
Technical problem to be solved in the utility model be to provide it is a kind of can be this with the hollow screw screwdriver of fixation guide pin
Hollow screw screwdriver can be on the basis of not influenceing routine to insert hollow screw operation, and hollow spiral shell is realized in fixation guide pin end
The nail at the uniform velocity advance lasting relative to guide pin, while keeping geo-stationary of the guide pin in femoral head.
Solving the technical scheme of above-mentioned technical problem is：
It is a kind of can be with the hollow screw screwdriver of fixation guide pin, it includes screwdriver bar, screwdriver handle, and screwdriver handle is connected to screwdriver bar
Rear end, have the guide pinhole that guide pin passes through along the central axial line of screwdriver bar and screwdriver handle, its improvements is that screwdriver handle is served as reasons
The bi-body structure of handle and base composition, base is located at the rear portion of handle, and there is a sleeve pipe base upper end, the lower end of sleeve pipe and base
Guide pinhole is connected, and there is a collar aperture along guide pin axially bored line in handle, at its lower end face, the internal diameter of collar aperture and the sleeve pipe of base it is outer
Footpath matches, in the collar aperture insertion handle of the sleeve pipe of base along handle, at its lower end, and the internal diameter of sleeve pipe and base and handle are led
Pin hole internal diameter matches, and screw is held out against in the side of base, holds out against screw and is connected with the guide pinhole side wall in base, holds out against
Bolt is held out against with the guide pin in guide pinhole through holding out against screw.
It is above-mentioned can be with the hollow screw screwdriver of fixation guide pin, the sleeve outer wall of the base and the collar aperture inwall of handle are equal
For smooth surface, the sleeve outer wall of base and the collar aperture inwall of handle with to be slidably matched.
It is above-mentioned can be with the hollow screw screwdriver of fixation guide pin, on the sleeve outer wall of the base and the collar aperture inwall of handle
There is screw thread respectively, the sleeve outer wall screw thread of base is engaged with the collar aperture inner thread of handle.
It is above-mentioned to have the connecting hole of mounting knob, handle with the hollow screw screwdriver of fixation guide pin, the side of the base
One end be inserted into connecting hole, handle and connecting hole is are detachably connected.
It is above-mentioned can with the hollow screw screwdriver of fixation guide pin, the lower cylinder of guide pin be processed as two it is relative parallel flat
Face, the plane of guide pin bottom and base hold out against that screw is relative, and puller bolt is through holding out against the plane that screw withstands on guide pin bottom
On.
The beneficial effects of the utility model are：
Screwdriver handle is changed to bi-body structure by the utility model, and the handle on screwdriver handle top is remained unchanged and can put with hollow screw
Enter operation, guide pin can be fixed for the base of screwdriver handle bottom, prevent guide pin from rotating, so in hollow screw precession,
Guide pin would not advance therewith, it is to avoid guide pin wears out forward femoral head and destroys articular surface, or even can penetrate the accident of pelvic cavity
Occur.The utility model is simple in construction, easy to use, can prevent guide pin from, with advance, keeping away during hollow screw is inserted
Exempt to cause accident surgery and cause complication, solving fracture of neck of femur hollow screw, to fix this in operation relatively common
Phenomenon, it is ensured that the safety of operation, and provide reliable guarantee to improve surgical quality.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is another structural representation of the present utility model；
Fig. 3 is use state schematic diagram of the present utility model.
Marked in figure as follows：Screwdriver bar 1, guide pinhole 2, handle 3, base 4, sleeve pipe 5, collar aperture 6, hold out against screw 7, hold out against
Bolt 8, connecting hole 9, handle 10, guide pin 11, hollow screw 12.
Embodiment
The utility model includes screwdriver bar 1 and screwdriver handle, and screwdriver handle is connected to the rear end of screwdriver bar 1, along the He of screwdriver bar 1
The central axial line of screwdriver handle has the guide pinhole 2 that guide pin 11 passes through, and this structure is as good as with prior art.It is of the present utility model to improve
Part is that screwdriver handle is changed into bi-body structure, and anterior handle 3 still completes to insert the operation of hollow screw 12 forward, rear portion
Base 4 realizes the fixation to guide pin 11, prevents guide pin 11 from rotating.
Shown in figure, screwdriver handle is the bi-body structure being made up of handle 3 and base 4.Base 4 is located at the rear portion of handle 3, bottom
There is sleeve pipe 54 upper ends of seat, and the lower end of sleeve pipe 5 is connected with the guide pinhole 2 of base 4.Corresponding, the lower surface of handle 3 has
Along the collar aperture 6 of the axis of guide pinhole 2, the external diameter of the internal diameter and sleeve pipe 5 of collar aperture 6 matches, and sleeve pipe 5 is along the lower end of handle 3
The insertion handle 3 of collar aperture 6 in, sleeve pipe 5 can be rotated in collar aperture 6, the guide pin of the internal diameter of sleeve pipe 5 and base 4 and handle 3
The internal diameter of hole 2 matches.
Shown in figure, a kind of fit structure of the sleeve pipe 5 of base 4 and the collar aperture 6 of handle 3 is, the outer wall of sleeve pipe 5 and sleeve pipe
The inwall of hole 6 is smooth surface, the outer wall of sleeve pipe 5 and the inwall of collar aperture 6 with to be slidably matched.The handle 3 of this structure is turning
Without constraint when dynamic, operator can feel that connecting screwdriver bar 1 to the front end of handle 3 applies pressure according to oneself.
Shown in figure, another fit structure of the sleeve pipe 5 of base 4 and the collar aperture 6 of handle 3 is, the outer wall of sleeve pipe 5 and set
There is screw thread on the inwall of pore 6 respectively, the outer wall thread of sleeve pipe 5 is engaged with the inner thread of collar aperture 6.The handle 3 of this structure exists
Constrained during rotation by sleeve pipe 5 and the screw thread of collar aperture 6, be forced forwardly movement, effect of preferably being advanced.
Shown in figure, in order to realize fixation of the base 4 to guide pin 11, prevent guide pin 11 from rotating, in the side of base 4
Screw 7 is held out against, screw 7 is held out against and is connected with the side wall of guide pinhole 2 in base 4, puller bolt 8 passes through and holds out against screw 7 with leading
Guide pin 11 in pin hole 2 is held out against.
In order that puller bolt 8 can firmly hold out against guide pin 11, the lower cylinder of guide pin 11 can be processed as to two phases
To parallel plane, the plane of the bottom of guide pin 11 and base 4 to hold out against screw 7 relative, puller bolt 8 is pushed up through holding out against screw 7
In the plane of the bottom of guide pin 11.
Shown in figure, in order to prevent base 4 from being rotated together with guide pin 11, have the company of mounting knob 10 in the side of base 4
Hole 9 is connect, one end of handle 10 is inserted into connecting hole 9, and handle 10 is detachably connected with connecting hole 9, can be threaded connection,
Can also be the tapered insertion connection of the body of rod of handle 10, it is therefore an objective to prevent handle 10 from being skidded off from connecting hole 9.In use,
One hand of operator rotates handle 3, is screwed into hollow screw 12, another hand, which holds handle 10, prevents base 4 from being rotated with guide pin 11,
Make the smoothly reach of hollow screw 12, even if now space is clogged by tissue between hollow screw 12 and guide pin 11, guide pin 11 also will not
Follow advance.
The utility model is not limited only to the treatment of fracture of neck of femur in actual use, and can be used for other positions needs
To be inserted along guide pin 11 hollow screw 12 treatment operation, for prevent guide pin 11 from rotating and with hollow screw 12 together before
Move.
Claims (5)
1. a kind of can be with the hollow screw screwdriver of fixation guide pin, it includes screwdriver bar（1）, screwdriver handle, screwdriver handle is connected to screwdriver
Bar（1）Rear end, along screwdriver bar（1）There is guide pin with the central axial line of screwdriver handle（11）The guide pinhole passed through（2）, its feature exists
In：Screwdriver handle is by handle（3）And base（4）The bi-body structure of composition, base（4）Positioned at handle（3）Rear portion, base（4）
There is sleeve pipe upper end（5）, sleeve pipe（5）Lower end and base（4）Guide pinhole（2）It is connected, handle（3）Lower surface has along guide pin
Hole（2）The collar aperture of axis（6）, collar aperture（6）Internal diameter and base（4）Sleeve pipe（5）External diameter match, base（4）'s
Sleeve pipe（5）Along handle（3）The collar aperture of lower end（6）Insert handle（3）In, sleeve pipe（5）Internal diameter and base（4）And handle
（3）Guide pinhole（2）Internal diameter matches, in base（4）Side hold out against screw（7）, hold out against screw（7）With base（4）In
Guide pinhole（2）Side wall is connected, puller bolt（8）Through holding out against screw（7）With guide pinhole（2）In guide pin（11）Hold out against.
2. according to claim 1 can be with the hollow screw screwdriver of fixation guide pin, it is characterised in that：The base（4）'s
Sleeve pipe（5）Outer wall and handle（3）Collar aperture（6）Inwall is smooth surface, base（4）Sleeve pipe（5）Outer wall and handle
（3）Collar aperture（6）Inwall with to be slidably matched.
3. according to claim 1 can be with the hollow screw screwdriver of fixation guide pin, it is characterised in that：The base（4）'s
Sleeve pipe（5）Outer wall and handle（3）Collar aperture（6）There are screw thread, base on inwall respectively（4）Sleeve pipe（5）Outer wall thread and hand
Handle（3）Collar aperture（6）Inner thread is engaged.
4. according to Claims 2 or 3 can be with the hollow screw screwdriver of fixation guide pin, it is characterised in that：The base（4）
Side have mounting knob（10）Connecting hole（9）, handle（10）One end be inserted into connecting hole（9）In, handle（10）With connecting
Connect hole（9）To be detachably connected.
5. according to claim 4 can be with the hollow screw screwdriver of fixation guide pin, it is characterised in that：Guide pin（11）Bottom
Cylinder is processed as two relative parallel planes, guide pin（11）The plane and base of bottom（4）Hold out against screw（7）Relatively,
Puller bolt（8）Through holding out against screw（7）Withstand on guide pin（11）In the plane of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043811.0U CN206355129U (en) | 2016-09-08 | 2016-09-08 | It is a kind of can be with the hollow screw screwdriver of fixation guide pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043811.0U CN206355129U (en) | 2016-09-08 | 2016-09-08 | It is a kind of can be with the hollow screw screwdriver of fixation guide pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206355129U true CN206355129U (en) | 2017-07-28 |
Family
ID=59368285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621043811.0U Active CN206355129U (en) | 2016-09-08 | 2016-09-08 | It is a kind of can be with the hollow screw screwdriver of fixation guide pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206355129U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264703A (en) * | 2016-09-08 | 2017-01-04 | 河北医科大学第三医院 | A kind of can be with the hollow screw screwdriver of fixation guide pin |
| CN108784928A (en) * | 2018-07-06 | 2018-11-13 | 北京航空航天大学 | A kind of Novel ophthalmic microsurgical knife remote centre of motion mechanism |
| CN113288389A (en) * | 2021-05-14 | 2021-08-24 | 山西医科大学第二医院 | Improved thighbone neck hollow nail screwdriver |
-
2016
- 2016-09-08 CN CN201621043811.0U patent/CN206355129U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264703A (en) * | 2016-09-08 | 2017-01-04 | 河北医科大学第三医院 | A kind of can be with the hollow screw screwdriver of fixation guide pin |
| CN108784928A (en) * | 2018-07-06 | 2018-11-13 | 北京航空航天大学 | A kind of Novel ophthalmic microsurgical knife remote centre of motion mechanism |
| CN113288389A (en) * | 2021-05-14 | 2021-08-24 | 山西医科大学第二医院 | Improved thighbone neck hollow nail screwdriver |
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