CN206924108U - Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin - Google Patents
Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin Download PDFInfo
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- CN206924108U CN206924108U CN201720030213.8U CN201720030213U CN206924108U CN 206924108 U CN206924108 U CN 206924108U CN 201720030213 U CN201720030213 U CN 201720030213U CN 206924108 U CN206924108 U CN 206924108U
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Abstract
It is wrong away from guide pin aiming hollow nail fixed system the utility model discloses torsion angle reference system fixed point before a kind of neck of femur, belong to bone surgery apparatus field wherein, including torsion angle determining device and vertical adjustable neck of femur fixed point are wrong away from sighting device before neck of femur near point positioner, neck of femur far point positioner, neck of femur；The utility model fixed point mistake is away from hollow nail guide pin sighting system using torsion angle before neck of femur as reference system, near end of thighbone anatomic landmark is made full use of to determine remote, the near index point needed for guide pin, using fixed point mistake away from method, in the case of independent of radioscopy and navigation, once succeed accurate implanted femur neck hollow nail guide pin, not only precisely operation, it is also safe and reliable.
Description
Technical field
The utility model belongs to bone surgery apparatus field, is related to a kind of hollow nail guide pin aiming and fixed equipment, specifically
It is related to using torsion angle before neck of femur as reference system, using the wrong guide pin sight and sky designed away from method of vertical adjustable fixed point
The heart follows closely fixed system.
Background technology
Three pieces of nail treatment fractures of neck of femur refer to through cortex of bone on the outside of near end of thighbone, by femoral neck bone broken line to neck of femur
Three pieces of hollow screw groups of interior screw-in, different stress are undertaken by rational deployment, treat a kind of method of fracture of neck of femur respectively.Three
Piece nail treatment fracture of neck of femur advantage be：Wound is small, and three pieces of thread steel nails are squeezed into neck of femur correct position；Wound is small,
Healing is fast, safe, severe complication seldom occurs；Curative effect affirms that postoperative a couple of days can leave hospital.
Three pieces of nail treatment fracture of neck of femur surgical effects and three pieces of nail location layouts are closely related, and not straightforward manipulation, is X
Operated under actinoscopy X.Fixation turns into the medium-sized standard art formula with remote fracture of neck of femur of neck in three pieces of hollow nails, and its key is
Insert correct position and the ideal length of guide pin.Currently used guide pin inserts more range estimations by doctor and experience, lacks visitor
Being adjusted in the measurement of sight standard, art can not also quantify, and there are the following problems：
1st, height relies on radioscopy；2nd, near end of thighbone operates repeatedly causes Cranial defect, iatrogenic fracture, screw to hold
Power declines, loosens or move back nail；3rd, not only position and angle of the guide pin in neck of femur can not precisely determine, and be unable to reach reason
The guide pin length thought, guide pin and screw easily break through articular cartilage, damage pelvic cavity viscera and joint；4th, in the preoperative art of surgical doctor
Need Reusability C arm machine to position, and rely on the surgical experience of clinician to adjust puncture needle repeatedly and try positioning on.In youth or face
When not abundant enough the doctor of bed experience operates, film making number is had an X-rayed in unavoidable increase, and amount of radiation suffered by doctors and patients increases, and increase punctures secondary
Number, increase patient suffering.Even if the doctor that clinical experience is abundant, be also used for multiple times unavoidably in positioning C arm machine film making positioning and
Repeatedly punctured using Kirschner wire.5th, in the natural disaster area such as basic hospital and generation earthquake typhoon, shortage C arm X-ray machines etc.
Equipment, the operation risk is very big.
At present, lack and only rely on the dissection of near end of thighbone, independent of the femur neck hollow nail guide pin of radioscopy in art
Aim at fixed system.Therefore, it is badly in need of simple clinical one kind, practicality, reduces operating difficulty, improves procedure efficiency, increase hand
The femur neck hollow nail guide pin of art security aims at and hollow nail fixed system.
Utility model content
The purpose of this utility model is to provide a kind of simple in construction, esy to use, safe and reliable, accurate, raising operation effect
Rate, increase operation safety neck of femur before torsion angle reference system-fixed point mistake away from guide pin aim at hollow nail fixed system.This practicality
The dihedral angle that torsion angle is neck of femur longitudinal central axis face before the new neck of femur referred to and near end of thighbone coronal-plane is formed, the angle
Reversed and formed forwards along its longitudinal central axis line by neck of femur；Different from top rake (the i.e. neck of femur longitudinal central axis line of neck of femur
The line face angle formed near end of thighbone coronal-plane, the angle are that neck of femur is rotated using near end of thighbone longitudinal central axis line as axle, forward
Formed).
To achieve these goals, the technical solution of the utility model is：Torsion angle reference system before neck of femur-vertical is provided
Adjustable fixed-point mistake is aimed at away from guide pin and hollow nail fixed system, wherein, including neck of femur near point positioner, neck of femur far point
Torsion angle determining device and vertical adjustable neck of femur fixed point mistake are away from sighting device before positioner, neck of femur；The neck of femur
Near point positioner is made up of interior lower module and outer upper module, and interior lower module is tabular tabletting, is set in the side-lower of tabular tabletting
There is left side card article, several vertical spacing grooves are provided with the leading flank of tabular tabletting；Outer upper module is block tabletting, is pressed in bulk
The side-lower of piece is provided with right side card article, and the bar that can be embedded in tabular tabletting and be matched with tabular tabletting is opened up in the middle part of block tabletting
Connected in star, several vertical spacing grooves are provided with the leading flank of block tabletting；The neck of femur far point positioner is by greater trochanter
Summit location-plate and L-type far point location-plate composition, the bottom of greater trochanter summit location-plate is provided with sliding block, greater trochanter summit location-plate
Side be provided with several fine setting guide holes；The top of L-type far point location-plate is provided with chute, and greater trochanter summit location-plate can by sliding block
The top of L-type far point location-plate is displaced into, the side of L-type far point location-plate is provided with upper reference opening and the next reference opening, upper
Central fixing hole is provided between reference opening and the next reference opening；Torsion angle determining device is by preceding torsion angular measurement before the neck of femur
Module, neck of femur pressing plate and preceding torsion angle connecting rod composition；Preceding torsion angle measurement module side is provided with mounting hole, preceding torsion angle is surveyed
The middle part of amount module is fixed on by connector at the central fixing hole of L-type far point location-plate；The end of preceding torsion angle connecting rod
Before being connected at the mounting hole of torsion angle measurement module, the front end of preceding torsion angle connecting rod is fixed on neck of femur pressing plate by sliding block
On；The vertical adjustable neck of femur fixed point is wrong to be covered away from sighting device by ranging rod, vertical adjustable mistake away from diopter and combination
Cylinder composition；Vertical adjustable mistake is vertically moved on ranging rod away from diopter front end by sliding block, and vertical adjustable mistake is away from aiming
Frame end, which is provided with, aims at hook；The vertical ranging rod of combined sleeve is fixed on ranging rod, is provided with combined sleeve and is placed Kirschner wire
Axial hole.
Further, the neck of femur near point positioner tabular tabletting and block tabletting on be equipped with scale, be easy to
Measure neck of femur transverse diameter, tabular tabletting and block tabletting and freely mount and dismount, thus accurate measurement neck of femur directly perceived is horizontal
Footpath simultaneously accurately determines near point position.
Further, the side of the L-type far point location-plate is provided with a central fixing hole, at least two horizontally arranged
Upper reference opening and at least two horizontally arranged the next reference openings.Using femoral greater trochanter summit as mark, near end of thighbone is determined
The remotely located point of outside cortex of bone.
Further, centrally-located hole is provided with the middle part of the preceding torsion angle measurement module, the positioning hole is available for fixed pin to hang down
Directly worn in L-type far point location-plate on the axis near end of thighbone.
Further, the preceding torsion angle connecting rod and neck of femur pressing plate vertical connection, and pass through preceding torsion angle connecting rod
Torsion angle before rotation forward after insertion mounting hole, using centrally-located hole as axle is adjusted.
Further, the ranging rod is provided with scale, is conveniently adjusted vertical adjustable mistake away from the aiming hook on diopter
Tip is wrong away from (deep to neck of femur center (Kirschner wire passed through through sleeve center, its extended line pass through neck of femur axis)
Degree).
Further, it is described to aim at hook perpendicular to vertical adjustable mistake away from diopter.
Further, the combined sleeve parallel to vertical adjustable mistake away from diopter.
Further, the combined sleeve includes outer barrel and inner cylinder, and inner cylinder is coaxially active in outer barrel, inner cylinder and outer barrel
The port of export is equipped with point pawls, and point pawls are advantageous to push muscle in surgical procedure open, and Kirschner wire fixation is solid in axial hole in inner cylinder, outer barrel
After fixed, Kirschner wire operates through inner cylinder fixation after outer barrel, effectively avoids the damage to surrounding tissue.
Further, the vertical adjustable mistake can be fixed on away from diopter, combined sleeve by adjusting clamping screw
On ranging rod.
Further, the axial hole for placing Kirschner wire is provided with the inner cylinder.The inner cylinder is at least two layers of (middle cylinder and small
Cylinder), fixation Kel's needle, the internal diameter of middle cylinder and the external diameter of core drill after the axial hole of the small cylinder of innermost layer matches with Kirschner wire external diameter
Match somebody with somebody, play the guiding function of core drill, it is ensured that the direction of core drill is not offset all the time, reaches the high purpose precisely pierced.
Torsion angle reference system-fixed point mistake has following away from guide pin aiming hollow nail fixed system before the utility model neck of femur
Beneficial effect：
1st, torsion angle reference system-fixed point mistake aims at hollow nail fixed system with femur away from guide pin before the utility model neck of femur
Throat torsion angle is reference system, makes full use of near end of thighbone anatomic landmark to determine remote, the near index point needed for guide pin, using vertical
Adjustable fixed-point mistake is away from method, and in the case of independent of radioscopy and navigation, once succeed accurate implanted femur neck hollow nail
Guide pin, not only precisely operation, also safe and reliable.
2nd, it is not required to have an X-rayed whether understand hollow nail position accurate in art repeatedly, will not also breaks through articular cartilage, into pelvic cavity,
Unnecessary damage is caused, reduces the pain of patient.
3rd, torsion angle reference system-fixed point mistake aims at the stock in hollow nail fixed system away from guide pin before the utility model neck of femur
Bone neck near point positioner is provided with vertical spacing groove, can make neck of femur fixed point is wrong vertically to fix stock away from the aiming hook in sighting device
The upper top of bone neck proximal hub, plus combined sleeve perpendicular to hook is aimed at, its Kirschner wire is set accurately to wear into neck of femur
The heart.
4th, after the utility model outer barrel is fixed, Kirschner wire is pierced through inner cylinder, pierce core drill, depth measurement and is screwed into the behaviour such as screw
Work is implemented in outer barrel, effectively avoids the damage to surrounding tissue.
Brief description of the drawings
Fig. 1 is aimed in hollow nail fixed system for torsion angle reference system-fixed point mistake before the utility model neck of femur away from guide pin
Neck of femur near point positioner, neck of femur far point positioner, preceding torsion angle measurement module be applied to femur on structure show
It is intended to；
Fig. 2 is the structural representation of the interior lower module in Fig. 1；
Fig. 3 is the structural representation of the outer upper module in Fig. 1；
Fig. 4 is neck of femur far point positioner and preceding torsion angle measurement module attachment structure schematic diagram in Fig. 1；
Fig. 5 connects for the neck of femur pressing plate in torsion angle determining device before the utility model neck of femur and preceding torsion angle connecting rod
Connect structural representation；
Fig. 6 is aimed in hollow nail fixed system for torsion angle reference system-fixed point mistake before the utility model neck of femur away from guide pin
The wrong structural representation away from sighting device of vertical adjustable neck of femur fixed point；
In figure：1st, femoral head；2nd, outer upper module；21st, strip groove；22nd, right side card article；23rd, vertical spacing groove；3rd, it is big thick
Grand summit center；4th, greater trochanter summit location-plate；41st, guide hole is finely tuned；42nd, sliding block；5th, preceding torsion angle measurement module；51st, position
Hole；52nd, mounting hole；6th, fixed pin；7th, L-type far point location-plate；71st, upper reference opening；72nd, the next reference opening；8th, interior lower module；
81st, left side card article；82nd, vertical spacing groove；9th, neck of femur pressing plate；91st, preceding torsion angle connecting rod；10th, ranging rod；11st, sliding block；
12nd, clamping screw is adjusted；13rd, vertical adjustable mistake is away from diopter；14th, hook is aimed at；15th, point pawls；16th, combined sleeve.
Embodiment
In order to describe the wrong technology that hollow nail fixed system is aimed at away from guide pin of the utility model vertical adjustable fixed point in detail
Content, construction feature, below in conjunction with embodiment and accompanying drawing is coordinated to be described further.
As shown in Fig. 1,2,3,4,5,6, torsion angle reference system-fixed point mistake aims at empty away from guide pin before the utility model neck of femur
Heart nail fixed system includes torsion angle determining device before neck of femur near point positioner, neck of femur far point positioner, neck of femur
It is wrong as follows away from sighting device, concrete structure with vertical adjustable neck of femur fixed point：
The neck of femur near point positioner is made up of interior lower module 8 and outer upper module 2, and interior lower module 8 is tabular tabletting,
Left side card article 81 is provided with the side-lower of tabular tabletting, several vertical spacing grooves 82 are provided with the leading flank of tabular tabletting；Outside
Upper module 2 is block tabletting, is provided with right side card article 22 in the side-lower of block tabletting, being opened up in the middle part of block tabletting can insert plate
Shape tabletting and the strip groove 21 matched with tabular tabletting, several vertical spacing grooves 23 are provided with the leading flank of block tabletting.
Left side card article 81 and right side card article 22 are stuck in the left and right ends of neck of femur, and tabular tabletting is enclosed on the strip groove of block tabletting
In 21, scale, measurable neck of femur transverse diameter are equipped with tabular tabletting and block tabletting；Vertical spacing groove can fix aiming hook and hang down
Directly in neck of femur overcentre.
The neck of femur far point positioner is made up of greater trochanter summit location-plate 4 and L-type far point location-plate 7, greater trochanter
The bottom of summit location-plate 4 is provided with sliding block 42, and the side of greater trochanter summit location-plate 4 is provided with several fine setting guide holes 41；L-type far point
The top of location-plate 7 is provided with chute, and greater trochanter summit location-plate 4 may move in the top of L-type far point location-plate by sliding block 42,
The side of L-type far point location-plate 7 be provided with least two horizontally arranged upper reference openings 71 and at least two it is horizontally arranged under
Position reference opening 72, central fixing hole is provided between upper reference opening 71 and the next reference opening 72.
Torsion angle determining device is connected by preceding torsion angle measurement module 5, neck of femur pressing plate 9 and preceding torsion angle before the neck of femur
Extension bar 91 forms；The preceding side of torsion angle measurement module 5 is provided with mounting hole 52, the middle part of preceding torsion angle measurement module 5 passes through connection
Part is fixed at the central fixing hole of L-type far point location-plate 7；Centrally-located hole is provided with the middle part of the preceding side of torsion angle measurement module 5
51, positioning hole 51 is available for fixed pin 6 to be worn perpendicular to L-type far point location-plate 7 on axis near end of thighbone (such as Fig. 1 institutes
Show).According to preoperative measurement torsion angle, before rotation after torsion angle measurement module 5 to the angle, it is ensured that upper reference opening 71, center
Positioning hole 51, the hole position of the next reference opening 72 3 are in same rectilinear direction.The end of preceding torsion angle connecting rod 91 is connected to preceding torsion
At the mounting hole 52 of angular measurement module 5, the front end of preceding torsion angle connecting rod 91 is fixed on neck of femur pressing plate 9 by sliding block, its
In preceding torsion angle connecting rod 91 and the vertical connection of neck of femur pressing plate 9.
The vertical adjustable neck of femur fixed point mistake is away from sighting device by ranging rod 10, vertical adjustable mistake away from diopter 13
Formed with combined sleeve 16；Vertical adjustable mistake is vertically moved on ranging rod 10 away from the front end of diopter 13 by sliding block 11, is hung down
Straight adjustable wrong be provided with away from the end of diopter 13 aims at hook 14；16 vertical ranging rod of combined sleeve is fixed on ranging rod 10, group
The axial hole for placing Kirschner wire is provided with trap cylinder 16.Ranging rod 10 is provided with scale, is conveniently adjusted vertical adjustable mistake away from taking aim at
Hook is aimed to the mistake at neck of femur center away from (depth) on quasi- frame.Hook 14 is aimed at perpendicular to vertical adjustable mistake away from diopter 13.
Combined sleeve 16 is parallel to vertical adjustable mistake away from diopter 13.
The combined sleeve 16 includes outer barrel and inner cylinder, and inner cylinder is coaxially active in outer barrel, the port of export of inner cylinder and outer barrel
Point pawls 15 are equipped with, point pawls are advantageous to push muscle in surgical procedure open, and Kirschner wire fixation is fixed in axial bore in inner cylinder, outer barrel
Afterwards, Kirschner wire operates through inner cylinder fixation after outer barrel, effectively avoids the damage to surrounding tissue.It is provided with and puts in the inner cylinder
Put the axial hole of Kirschner wire.The inner cylinder is at least two layers (middle cylinder and small cylinder), outside the axial hole and Kirschner wire of the small cylinder of innermost layer
Fixation Kel's needle after the matching of footpath, the internal diameter of middle cylinder match with the external diameter of core drill, play the guiding function of core drill, it is ensured that hollow
The direction of brill is not offset all the time, reaches the high purpose precisely pierced.
The vertical adjustable mistake can be fixed on ranging away from diopter 13, combined sleeve 16 by adjusting clamping screw 12
On bar 10.
Torsion angle reference system-fixed point mistake aims at the user of hollow nail fixed system away from guide pin before the utility model neck of femur
Method is as follows：
1st, fracture after open reduction, interior lower module 8 along capsula articularis coxae depth face, be close in neck of femur lower section cortex of bone and insert；
Outer upper module 2 along capsula articularis coxae depth face, be close to the outside upper quadrate bone cortex of neck of femur and insert, interior lower module 8 is located in outer upper module 2
In strip groove, neck of femur transverse diameter is measured by scale after fastening, and determines near-end index point A1, A2, A3, as shown in Figure 1.Figure
Label 1 is femoral head in 1.
2nd, greater trochanter summit location-plate 4 is fixed at greater trochanter summit center 3 by fixed pin through fine setting guide hole 41, will
L-type far point location-plate 7 is surveyed by the chute at top and the sliding block Matching installation of greater trochanter summit location-plate 4, then by preceding torsion angle
Module 5 is measured to be arranged at the fixing hole of L-type far point location-plate.As shown in figure 1, adjustment L-type far point location-plate 7, is allowed to be located at stock
On axis on the outside of proximal bone, it is determined that distal end index point B1, B2, B3.
3rd, according to the preceding torsion angle of preoperative measurement, before rotation torsion angle measurement module 5 to the angle and by fixed pin 6 from
Positioning hole penetrates fixation；Then before preceding torsion angle connecting rod 91 is inserted in the mounting hole 52 in the front of torsion angle measurement module 5, stock
Bone neck pressing plate 9 is parallel to be pressed on outer upper module 2, adjusts outer upper module 2, interior lower module 8 is allowed to parallel with neck of femur pressing plate 9.
4th, as shown in fig. 6, the tip for aiming at hook 14 to be placed in the vertical spacing groove of the outer upper module in front of A1 and keep
It is vertical with outer upper module, interior lower module to aim at hook；After Kirschner wire passes through the small cylinder axial hole of the inner cylinder of combined sleeve 16, its tip
Positioned at B1 points, as shown in Figure 1.It is determined that after distal end and near-end index point, calculated according to preoperative measurement result and aim at hook tip to stock
Bone neck center it is wrong away from rear, vertical adjustable mistake is adjusted away from diopter 13 by mobile sliding block 11, according to the scale on ranging rod
To required position.Kirschner wire pierces along the direction.
5th, after Kirschner wire pierces along the direction, first take out the small cylinder of innermost layer, then along Kirschner wire direction, by core drill along
Middle cylinder internal diameter pierces, and after core drill is inserted, then middle cylinder is taken out, it is ensured that the direction of core drill is not offset all the time, reach it is high precisely
The purpose pierced.
Above disclosed is only preferred embodiment of the present utility model, certainly can not be new to limit this practicality with this
The interest field of type, therefore the equivalent variations made according to the utility model claims, still fall within what the utility model was covered
Scope.
Claims (10)
1. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur, it is characterised in that：Including femur
Torsion angle determining device and vertical adjustable neck of femur are determined before neck near point positioner, neck of femur far point positioner, neck of femur
Point mistake is away from sighting device；The neck of femur near point positioner is made up of interior lower module and outer upper module, and interior lower module is tabular
Tabletting, left side card article is provided with the side-lower of tabular tabletting, several vertical spacing grooves are provided with the leading flank of tabular tabletting；Outside
Upper module is block tabletting, is provided with right side card article in the side-lower of block tabletting, tabular can be embedded in by being opened up in the middle part of block tabletting
Tabletting and the strip groove matched with tabular tabletting, several vertical spacing grooves are provided with the leading flank of block tabletting；The stock
Bone neck far point positioner is made up of greater trochanter summit location-plate and L-type far point location-plate, the bottom of greater trochanter summit location-plate
Provided with sliding block, the side of greater trochanter summit location-plate is provided with several fine setting guide holes；The top of L-type far point location-plate is provided with chute,
Greater trochanter summit location-plate may move in the top of L-type far point location-plate by sliding block, and the side of L-type far point location-plate is provided with upper
Position reference opening and the next reference opening, are provided with central fixing hole between upper reference opening and the next reference opening；Turned round before the neck of femur
Corner determining device is made up of preceding torsion angle measurement module, neck of femur pressing plate and preceding torsion angle connecting rod；Preceding torsion angular measurement mould
The center that block side is fixed on L-type far point location-plate provided with mounting hole, the middle part of preceding torsion angle measurement module by connector is consolidated
Determine at hole；Before the end of preceding torsion angle connecting rod is connected at the mounting hole of torsion angle measurement module, preceding torsion angle connecting rod
Front end is fixed on neck of femur pressing plate by sliding block；Vertical adjustable neck of femur fixed point it is wrong away from sighting device by ranging rod,
Vertical adjustable mistake forms away from diopter and combined sleeve；Vertical adjustable mistake away from diopter front end by sliding block vertically move in
On ranging rod, vertical adjustable mistake is provided with away from diopter end and aims at hook；The vertical ranging rod of combined sleeve is fixed on ranging rod,
The axial hole for placing Kirschner wire is provided with combined sleeve.
2. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：Scale is equipped with the tabular tabletting and block tabletting of the neck of femur near point positioner.
3. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The side of the L-type far point location-plate be provided with central fixing hole, at least two horizontally arranged upper reference openings and
At least two horizontally arranged the next reference openings.
4. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：Centrally-located hole is provided with the middle part of the preceding torsion angle measurement module, positioning hole is available for fixed pin perpendicular to L-type far point
Location-plate is worn on the axis near end of thighbone.
5. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The preceding torsion angle connecting rod and neck of femur pressing plate vertical connection.
6. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The ranging rod is provided with scale.
7. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The aiming hook is perpendicular to vertical adjustable mistake away from diopter.
8. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The combined sleeve is parallel to vertical adjustable mistake away from diopter.
9. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1, its
It is characterised by：The combined sleeve includes outer barrel and inner cylinder, and inner cylinder is coaxially active in outer barrel, and the port of export of inner cylinder and outer barrel is equal
Provided with point pawls.
10. torsion angle reference system-fixed point mistake aims at hollow nail fixed system away from guide pin before neck of femur as claimed in claim 1,
It is characterized in that：The vertical adjustable mistake can be fixed on ranging rod away from diopter, combined sleeve by adjusting clamping screw
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720030213.8U CN206924108U (en) | 2017-01-11 | 2017-01-11 | Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720030213.8U CN206924108U (en) | 2017-01-11 | 2017-01-11 | Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin |
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| CN206924108U true CN206924108U (en) | 2018-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725820A (en) * | 2017-01-11 | 2017-05-31 | 邓迎生 | Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin |
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2017
- 2017-01-11 CN CN201720030213.8U patent/CN206924108U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725820A (en) * | 2017-01-11 | 2017-05-31 | 邓迎生 | Torsion angle reference system fixed point is wrong before neck of femur aims at hollow nail fixed system away from guide pin |
| CN106725820B (en) * | 2017-01-11 | 2023-05-16 | 邓迎生 | Femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system |
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