CN206228414U - A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone - Google Patents
A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone Download PDFInfo
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- CN206228414U CN206228414U CN201620690887.6U CN201620690887U CN206228414U CN 206228414 U CN206228414 U CN 206228414U CN 201620690887 U CN201620690887 U CN 201620690887U CN 206228414 U CN206228414 U CN 206228414U
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- screw blade
- arm
- screw
- groove
- positioning bar
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Abstract
A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone, belongs to orthopedic medical device technical field, for ensureing that screw blade is accurately squeezed into.Its technical scheme is：The upper end of its upright arm is connected with one end of horizontal arm by fastening bolt is vertical, the lower end of upright arm has draw-in groove to be connected with screw blade guider, there are multiple location holes on horizontal arm, location hole is arranged along the length direction order of horizontal arm, the axis of location hole is parallel with the length direction of upright arm, perpendicular positioning bar is inserted in location hole, and with location hole to be slidably matched, clamping screw fixes perpendicular positioning bar to perpendicular positioning bar.Along the direction of horizontal arm when the utility model can squeeze into screw blade, femoral head will not be cut out, perpendicular positioning bar can determine screw blade guider in the position of vertical direction, it is ensured that accurately be squeezed into.It is the utility model simple structure, easy to use, solve the problems, such as that screw blade is implanted into inaccurate, the operating time of shortening, improve success rate of operation.
Description
Technical field
The utility model is related to a kind of assistive device of the anti-rotation treatment of Femoral Intertrochanteric Fracture of near end of thighbone, especially
Suitable for unstable type fracture and the fracture of neck of femur cortical defect, belong to orthopedic medical device technical field.
Background technology
The anti-rotation intramedullary nail of near end of thighbone（PFNA）It is third generation intramedullary nail, it includes main nail and screw blade, main nail is complete
According to pulp cavity anatomical form Design, 2 pieces of pinnings of near-end, main nail are replaced to be placed in the pulp cavity of femur with screw blade, circular knife
Piece along neck of femur direction, screw blade and main nail interconnection.Screw blade has stronger anti-rotation and angulation stabilization
Property, strengthening anchor makes a concerted effort and anti-cut output capacity, can be prevented effectively from the generation of screw loosening or " Z " word effect.Distal end is changed to a lock
Determine hole, and energy unrestricted choice is either statically or dynamically locked.PFNA can make femoral head and neck reach strong fixation, enhance anti-rotation energy
Power, coxa vara is also avoided that in the fracture of inner side defect and the generation of complication such as cuts out, it is adaptable to which femoral trochanter is asked various
Type is fractured, and is particularly well-suited to unstable fracture and osteoporotic fracture.At present, PFNA is due to its stabilization, safety and complication
Few the advantages of, is favored by many doctors.PFNA is at aspects such as operating time, intraoperative hemorrhage, postoperative complications better than in tradition
Technique for fixing, more and more uses however as PFNA, and the report of PFNA treatment intertrochanteric fracture fixation failures is also more next
It is more.It is reported that the stability of fracture, reset case and entry point are relevant with PFNA failures.At present, fracture surgery loses
The common cause for losing is that the implantation position of the screw blade of PFNA is incorrect, deviates the central axis of neck of femur, causes neck of femur
Cortex of bone is damaged.This phenomenon turns into a severe complication of operative treatment intertrochanteric fracture, frequently results in patient's hand again
Art.In implementation process of performing the operation, pinnacle is whether influence screw cuts out one of key factor of femoral head, the spiral of PFNA away from value
The optimum position that blade is squeezed into, to be descended at 1/3rd in neck of femur, is the bottom of neck of femur coronal-plane, and the center of sagittal plane is protected
Card pinnacle is away from least below 25mm.At present in surgical procedure, operating personnel are implanted into circular knife using screw blade guider
Piece, the approach axis of screw blade guider fully rely on artificial judgment, therefore accuracy can not be effectively ensured, and this is
The main cause for causing screw blade to deviate, it would be highly desirable to which scientific research and medical worker solve.
Utility model content
The screw blade that technical problem to be solved in the utility model is to provide a kind of anti-rotation intramedullary nail of near end of thighbone is planted
Enter locator, this locator ensure that screw blade is disposably driven into optimum position, it is to avoid screw blade cuts out.
Solving the technical scheme of above-mentioned technical problem is：
A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone, it is by upright arm, horizontal arm and vertically determines
Position bar composition, the upper end of upright arm is connected with one end of horizontal arm by fastening bolt is vertical, and there are draw-in groove, draw-in groove in the lower end of upright arm
Be connected with screw blade guider, there is multiple location holes on horizontal arm, location hole along horizontal arm length direction sequentially
Arrangement, the axis of location hole is parallel with the length direction of upright arm, and perpendicular positioning bar is inserted in location hole, outside perpendicular positioning bar
Footpath matches with the aperture of location hole, and with location hole to be slidably matched, there are locking screw holes the side of location hole to perpendicular positioning bar, lock
Tight bolt fixes perpendicular positioning bar through locking screw holes.
The screw blade implantation locator of the above-mentioned anti-rotation intramedullary nail of near end of thighbone, the upper end of the upright arm has installation recessed
Groove, installs texturearunaperpendicular in the length direction of upright arm, and the width for installing groove matches with the width of horizontal arm, installs groove
Side have a mounting hole, one end of horizontal arm is placed in installation groove, and there are screw, position and the peace of screw in the side of horizontal arm
The position for filling hole is corresponding, and fastening bolt is connected through mounting hole with the screw of horizontal arm.
The screw blade implantation locator of the above-mentioned anti-rotation intramedullary nail of near end of thighbone, the draw-in groove of the upright arm lower end is for laterally
The U-type groove of placement, the lower end above U-type groove with upright arm is welded to connect, and screw blade guider is placed in U-type groove, U
There is fixing threaded hole below type groove, be fixed on screw blade guider in U-type groove through fixing threaded hole by fixing bolt.
The screw blade implantation locator of the above-mentioned anti-rotation intramedullary nail of near end of thighbone, the lower end of the perpendicular positioning bar and femur
The upper surface of neck is relative, and the inlet point of the screw blade guider that the central axis of neck of femur is clamped with upright arm lower end is same
On one horizontal plane.
The beneficial effects of the utility model are：
Upright arm of the present utility model, horizontal arm, perpendicular positioning bar and screw blade guider collectively constitute " a square
Shape ", horizontal arm is parallel to each other with screw blade guider, it is ensured that along the direction of horizontal arm when screw blade is squeezed into, no
Femoral head can be cut out, perpendicular positioning bar can adjust far and near according to neck of femur length, to determine that screw blade guider is hanging down
Nogata is to relative with the axis of neck of femur so that screw blade can be squeezed into accurately.
It is the utility model simple structure, easy to use, solve the screw blade implantation of the anti-rotation intramedullary nail of near end of thighbone not
Accurate problem, will not cause damage, it is therefore prevented that the generation of postoperative complication to femoral neck bone cortex, alleviate the pain of patient
Hardship, shortens operating time, improve the success rate that screw blade is squeezed into, it is to avoid blade cuts out femoral head.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is use state schematic diagram of the present utility model.
Marked in figure as follows：Upright arm 1, horizontal arm 2, perpendicular positioning bar 3, draw-in groove 4, location hole 5, locking screw holes 6, locking
Bolt 7, installation groove 8, mounting hole 9, screw 10, fastening bolt 11, fixing threaded hole 12, fixing bolt 13, screw blade are oriented to
Device 14, femur 15, neck of femur 16.
Specific embodiment
The utility model is made up of upright arm 1, horizontal arm 2 and perpendicular positioning bar 3.
Shown in figure, there is installation groove 8 upper end of upright arm 1, installs length direction of the groove 8 perpendicular to upright arm 1, peace
The width for filling groove 8 matches with the width of horizontal arm 2, and one end of horizontal arm 2 is placed in installation groove 8.Groove 8 is installed
There is screw 10 side that there is mounting hole 9, horizontal arm side, and the position of screw 10 is corresponding with the position of mounting hole 9, fastening bolt
11 are connected through mounting hole 9 with the screw 10 of horizontal arm 2, and horizontal arm 2 is fastenedly connected with the upper end of upright arm 1.
Shown in figure, there is draw-in groove 4 lower end of upright arm 1, draw-in groove 4 is laterally disposed U-type groove, above U-type groove with hang down
The lower end of straight-arm 1 is welded to connect, and screw blade guider 14 is placed in U-type groove, there is fixing threaded hole 12 below U-type groove,
Be fixed on screw blade guider 14 in U-type groove through fixing threaded hole 12 by fixing bolt 13.
Show there are multiple location holes 5 on horizontal arm 2 in figure, location hole 5 is arranged along the length direction order of horizontal arm 2,
The axis of location hole 5 is parallel with the length direction of upright arm 1, and perpendicular positioning bar 3 is inserted in location hole 5, outside perpendicular positioning bar 3
Footpath matches with the aperture of location hole 5, and perpendicular positioning bar 3, to be slidably matched, can be moved down with location hole 5 on location hole 5 is interior
It is dynamic, to adjust the height of perpendicular positioning bar 3.There are locking screw holes 6 side of location hole 5, and clamping screw 7 will through locking screw holes 6
Perpendicular positioning bar 3 is fixed.The spacing in the adjacent positioned hole of one embodiment of the present utility model is 5mm.
Shown in figure, the lower end of perpendicular positioning bar 3 is relative with the upper surface of neck of femur 16, the length of perpendicular positioning bar 3 and
The length of upright arm 1 is closely related with the diameter of neck of femur 16.
After perpendicular positioning bar 3 is inserted, the front end of perpendicular positioning bar 3 is in contact with the neck of femur 16 of patient, the depth of insertion
The approach axis of the central axis of neck of femur 16 and screw blade guider 14 should be made in same level.
Shown in figure, upright arm 1, horizontal arm 2, perpendicular positioning bar 4 and screw blade guider 14 collectively constitute one
" rectangle ", horizontal arm 2 is parallel to each other with screw blade guider 14, it is ensured that along horizontal arm 2 when screw blade is squeezed into
Direction, will not cut out femoral head, and perpendicular positioning bar 3 can be according to the length adjusting position of neck of femur 16, it is possible to adjustment insertion
Depth, to determine that screw blade guider 14 is relative with the central axis of neck of femur 16 in vertical direction so that screw blade
Can accurately be squeezed into.
Circular is as follows：
Consulting literatures understand diameter average out to before and after Asian adults neck of femur：2a=26.23±2.10mm.If perpendicular positioning
The depth of the insertion of bar 3 is b, and the inlet point of the front end of screw blade guider 14 is c apart from the distance of horizontal arm 2, and wherein c is card
Groove 4 clamps the fixed value after screw blade guider 14, then c=a+b, b=c-a, i.e. the depth of the insertion of perpendicular positioning bar 3 is equal to
Fixed value c subtracts the half of patient femur's neck diameter.The numerical value of patient femur's neck should determine according to clinical measurement.
Claims (3)
1. a kind of screw blade of the anti-rotation intramedullary nail of near end of thighbone is implanted into locator, it is characterised in that：It is by upright arm（1）, water
Flat arm（2）With perpendicular positioning bar（3）Composition, upright arm（1）Upper end and horizontal arm（2）One end by fastening bolt（11）Vertically
Connection, upright arm（1）Lower end have draw-in groove（4）, draw-in groove（4）With screw blade guider（14）It is connected, horizontal arm（2）On
There are multiple location holes（5）, location hole（5）Along horizontal arm（2）Length direction order arrange, location hole（5）Axis with hang down
Straight-arm（1）Length direction it is parallel, perpendicular positioning bar（3）It is inserted in location hole（5）In, perpendicular positioning bar（3）External diameter with positioning
Hole（5）Aperture match, perpendicular positioning bar（3）With location hole（5）To be slidably matched, location hole（5）Side have locking screw
Hole（6）, clamping screw（7）Through locking screw holes（6）By perpendicular positioning bar（3）It is fixed；The perpendicular positioning bar（3）Lower end with
Neck of femur（16）Upper surface it is relative, neck of femur（16）Central axis and upright arm（1）The screw blade of lower end clamping is oriented to
Device（14）Inlet point in same level.
2. the screw blade of the anti-rotation intramedullary nail of near end of thighbone according to claim 1 is implanted into locator, it is characterised in that：Institute
State upright arm（1）Upper end have installation groove（8）, groove is installed（8）Perpendicular to upright arm（1）Length direction, install groove
（8）Width and horizontal arm（2）Width match, install groove（8）Side have mounting hole（9）, horizontal arm（2）One end
It is placed on installation groove（8）In, horizontal arm（2）Side have screw（10）, screw（10）Position and mounting hole（9）Position
It is corresponding, fastening bolt（11）Through mounting hole（9）With horizontal arm（2）Screw（10）It is connected.
3. the screw blade of the anti-rotation intramedullary nail of near end of thighbone according to claim 2 is implanted into locator, it is characterised in that：Institute
State upright arm（1）The draw-in groove of lower end（4）It is laterally disposed U-type groove, with upright arm above U-type groove（1）Lower end welding connect
Connect, screw blade guider（14）It is placed in U-type groove, there is fixing threaded hole below U-type groove（12）, fixing bolt（13）Wear
Cross fixing threaded hole（12）By screw blade guider（14）It is fixed in U-type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620690887.6U CN206228414U (en) | 2016-07-04 | 2016-07-04 | A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620690887.6U CN206228414U (en) | 2016-07-04 | 2016-07-04 | A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206228414U true CN206228414U (en) | 2017-06-09 |
Family
ID=58988993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620690887.6U Expired - Fee Related CN206228414U (en) | 2016-07-04 | 2016-07-04 | A kind of screw blade implantation locator of the anti-rotation intramedullary nail of near end of thighbone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206228414U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802334A (en) * | 2017-11-10 | 2018-03-16 | 刘玉宝 | One kind stops nail positioner |
| CN108742811A (en) * | 2018-07-09 | 2018-11-06 | 常州华森医疗器械有限公司 | A kind of anti-rotation type intramedullary nail external member |
| WO2020117148A3 (en) * | 2018-04-04 | 2020-09-03 | Tst Rakor Ve Tibbi̇ Aletler Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Proximal femoral de-rotation nail |
| CN111658123A (en) * | 2020-07-10 | 2020-09-15 | 牛鸣 | External positioning device for replacement of femoral bone marrow by knee joint |
-
2016
- 2016-07-04 CN CN201620690887.6U patent/CN206228414U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802334A (en) * | 2017-11-10 | 2018-03-16 | 刘玉宝 | One kind stops nail positioner |
| WO2020117148A3 (en) * | 2018-04-04 | 2020-09-03 | Tst Rakor Ve Tibbi̇ Aletler Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Proximal femoral de-rotation nail |
| CN108742811A (en) * | 2018-07-09 | 2018-11-06 | 常州华森医疗器械有限公司 | A kind of anti-rotation type intramedullary nail external member |
| CN111658123A (en) * | 2020-07-10 | 2020-09-15 | 牛鸣 | External positioning device for replacement of femoral bone marrow by knee joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20180704 |