CN212326541U - Be applied to femoral neck fracture screw fixation director - Google Patents
Be applied to femoral neck fracture screw fixation director Download PDFInfo
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- CN212326541U CN212326541U CN202022069328.2U CN202022069328U CN212326541U CN 212326541 U CN212326541 U CN 212326541U CN 202022069328 U CN202022069328 U CN 202022069328U CN 212326541 U CN212326541 U CN 212326541U
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Abstract
The utility model provides a be applied to femoral neck fracture screw fixation director, the link of staple is connected with the one end of side position central line locating lever before the thigh, first mounting hole has been seted up to the other end of side position central line locating lever, insert the first ke shi needle parallel with first mounting hole axis on the side position central line locating lever, the one end and the first mounting hole clearance fit of vertical extension rod, and install on side position central line locating lever through first puller bolt, the second mounting hole rather than the axis vertically is seted up to the other end of vertical extension rod, the top and the second mounting hole clearance fit of vertical connecting rod, and install on vertical extension rod through second puller bolt, the bottom of vertical connecting rod is equipped with rather than the axis vertically guide sleeve. The utility model discloses in, the requirement of different neck dry angles can be satisfied in anteversion and abduction angularly adjustable, realizes the fixed requirement of adherence to it is fixed to keep abduction angle and anteversion angle, guarantees that three pieces of second ke shi needles of successively installing are parallel, reaches the accurate positioning.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically be a be applied to femoral neck fracture screw fixation director.
Background
The hollow screw internal fixation is a common operation mode for treating femoral neck fracture, but because of factors and requirements of cervical shaft angle, anteversion angle, wall-attached fixation, parallel Chinese character 'pin' and the like, the clinical realization of drilling under the condition of purely depending on fluoroscopy is difficult. The current positioners have the following problems: 1. the abduction angle is fixed, and the requirements of different cervical vertebra angles cannot be met; 2. the distance between the pinholes is fixed, so that the requirement of wall attachment fixation is difficult to meet; 3. the incision is required until the locator is close to the cortical bone and a major trauma remains. In addition, the external guider is difficult to achieve accurate positioning due to developed muscles at the near end of the thigh, fat hypertrophy, body position movement during operation and the like; the drill hole needs to be positioned rightly and side axis perspective under perspective, and the radiation to doctors is large.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, the utility model provides a screw fixing guider for femoral neck fracture, which adopts the technical proposal that the guider comprises a front femoral fixing nail, a side position central line locating rod, a longitudinal extension rod and a vertical connecting rod, wherein the front femoral fixing nail is provided with a tip end used for drilling into the lateral femur outside the thigh and a connecting end used for connecting the side position central line locating rod, the connecting end of the front femoral fixing nail is connected with one end of the side position central line locating rod, the other end of the side position central line locating rod is provided with a first mounting hole, a first kirschner wire parallel to the axis of the first mounting hole is inserted on the side position central line locating rod, one end of the longitudinal extension rod is in clearance fit with the first mounting hole and is arranged on the side position central line locating rod through a first puller bolt, the other end of the longitudinal extension rod is provided with a second mounting hole vertical to the axis, the top end of the vertical connecting rod is in clearance fit with the, and install on vertical extension rod through the tight bolt in second top, the bottom of vertical connecting rod is equipped with rather than axis vertically guide sleeve, wears to be equipped with the second kirschner wire that is used for the direction to install hollow screw in the guide sleeve.
Preferably, the front fixing nail of the strand is provided with a strip-shaped long groove which is fixedly connected with the side position central line positioning rod, and the length direction of the strip-shaped long groove is consistent with that of the front fixing nail of the strand.
Preferably, a mounting groove is formed in the side position center line positioning rod, the length direction of the mounting groove is perpendicular to the axis of the first mounting hole, an adjusting groove is formed in the side wall of the mounting groove, and the T-shaped bolt in the mounting groove penetrates through the strip-shaped long groove of the femur fixing nail and is connected with the adjusting groove through the pressing nut.
Preferably, the front fixing nail of the strand is provided with a square section with a square cross section, and the strip-shaped long groove penetrates through the square section.
Preferably, all be equipped with the angle scale around first mounting hole and the second mounting hole, the tip of longitudinal extension pole and vertical connecting rod all is equipped with the angle mark line that is used for instructing rotation angle.
The utility model has the advantages that: the utility model discloses an among the director, vertical extension rod is on a parallel with thighbone side position central line, and vertical extension rod, vertical connecting rod can rotate in corresponding the mounting hole, and rake and abduction angle are adjustable, can satisfy the requirement at different neck trunk angles. Through removing vertical extension rod and vertical connecting rod in the mounting hole that corresponds, adjust the pinhole interval, can realize the fixed requirement of adherence to keep abduction angle and anteversion angle fixed, guarantee that three pieces of second ke shi needles of successively installing are parallel, reach accurate positioning.
Furthermore, the front thigh fixing nail is provided with a strip-shaped long groove, so that the distance can be conveniently adjusted, the front thigh fixing nail does not need to be cut to be close to cortical bone, and larger wound is avoided; the structure setting of mounting groove, adjustment tank and T shape bolt for side position central line locating lever is adjustable at the axial of self axial and the axial distance of strand preceding staple, and is also adjustable with the contained angle of strand preceding staple, can adjust in a flexible way, guarantees the location to vertical extension rod.
Drawings
Fig. 1 is a schematic structural view of the screw fixation guide for femoral neck fracture according to the present invention;
FIG. 2 is a schematic structural view of a femoral nail;
FIG. 3 is a schematic structural view of a lateral centerline positioning rod;
FIG. 4 is a schematic view of a longitudinally extending rod;
FIG. 5 is a schematic structural view of a vertical connecting rod;
in the figure: the femoral head fixing device comprises a 1-femoral fixing nail, 11-strip-shaped long grooves, a 2-lateral position midline positioning rod, 21-first mounting holes, 22-mounting grooves, 23-T-shaped bolts, 24-compression nuts, 3-longitudinal extension rods, 31-second mounting holes, 32-second tightening bolts, 4-vertical connecting rods, 41-guide sleeves, 5-first Kirschner wires, 6-femoral necks and 7-second Kirschner wires.
Detailed Description
The technical solution of the present invention will be described in detail by the following specific examples.
As shown in fig. 1 to 5, a screw fixation guide for femoral neck fracture comprises a front femoral fixation nail 1, a lateral midline positioning rod 2, a longitudinal extension rod 3 and a vertical connection rod 4. The front thigh fixing nail 1 is provided with a tip end used for drilling into the lateral femur of the outer thigh and a connecting end used for connecting the side position central line locating rod 2, the connecting end of the front thigh fixing nail 1 is connected with one end of the side position central line locating rod 2, the other end of the side position central line locating rod 2 is provided with a first mounting hole 21, a first Kirschner wire 5 parallel to the axis of the first mounting hole 21 is inserted on the side position central line locating rod 2, one end of a longitudinal extension rod 3 is in clearance fit with the first mounting hole 21, and is arranged on the side position central line positioning rod 2 through a first puller bolt, the other end of the longitudinal extension rod 3 is provided with a second mounting hole 31 vertical to the axis of the longitudinal extension rod, the top end of the vertical connecting rod 4 is in clearance fit with the second mounting hole 31, and is installed on the longitudinal extension rod 3 through a second puller bolt 32, the bottom end of the vertical connecting rod 4 is provided with a guide sleeve 41 vertical to the axis thereof, and a second kirschner wire 7 is arranged in the guide sleeve 41 in a penetrating way.
In this embodiment, the front thigh fixing nail 1 is provided with a strip-shaped long groove 11 for being fixedly connected with the side position center line positioning rod, and the length direction of the strip-shaped long groove 11 is consistent with the length direction of the front thigh fixing nail 1.
A mounting groove 22 is formed in the side position center line positioning rod 2, the length direction of the mounting groove 22 is perpendicular to the axis of the first mounting hole 21, an adjusting groove is formed in the side wall of the mounting groove 22, a T-shaped bolt 23 in the mounting groove 22 penetrates through a strip-shaped long groove 11 of the femur fixing nail 2 and the adjusting groove to be connected with a compression nut 24, and the femur front fixing nail 1 can be fixed through rotating the compression nut.
The front fixing nail 1 is provided with a square section with a square cross section, and the strip-shaped long groove 11 penetrates through the square section.
All be equipped with the angle scale around first mounting hole 21 and the second mounting hole 31, the link of vertical extension rod 3 and vertical connecting rod 4 all is equipped with the angle mark line that is used for instructing rotation angle.
Specifically, the tip of the femur fixing nail 1 is a round needle with a length of 10cm and a diameter of 3.0mm in front, and the tip of the femur fixing nail is a triangular tip in front. The middle section is a cuboid with the length of 5cm, the width of 0.6cm and the height of 0.6cm, the near end of 1cm is a cylinder with the diameter of 0.6mm, and a strip-shaped long groove 11 with the width of 3mm is arranged in the centers of the near end and the middle section to form a connecting end for fixing on the lateral midline positioning rod 2.
The lateral position central line positioning rod 2 is 6cm long, 1cm wide and 1cm high, a round hole with the diameter of 8mm is arranged at the position of 1cm at one end and serves as a first mounting hole 21 for the longitudinal extension rod 3 to pass through, and a first tightening bolt is arranged on the lateral side and can fix the longitudinal extension rod 3; a central groove is arranged at the position 5cm away from the other end, is an installation groove 22, is 8mm wide and is used for the femoral fixing nail 1 to pass through; the tail end of the needle is provided with a round hole with the diameter of 2.5mm, and a first Kirschner wire 5 with the diameter of 2mm is inserted for perspective positioning.
The near end of the longitudinal extension rod 3 is a cylinder with the length of 10cm and the diameter of 6mm, and can be inserted into an 8mm round hole of the lateral midline positioning rod 2; the side wall of the cylinder is provided with a marking line, and the rotation angle can be read according to the peripheral scale of the 8mm round hole of the side position central line positioning rod 2 so as to adjust the front inclination angle; the far-end is a 1cm long, 1cm wide, 1cm high square piece, and central authorities are a diameter 8mm round hole, second mounting hole 31 promptly, supply vertical connecting rod 4 to pass, and there is second puller bolt 32 can fixed vertical connecting rod 4 side.
One side of the vertical connecting rod 4 is a cylinder with the length of 6cm and the diameter of 6mm, and can pass through a second mounting hole 31 in the center of the far section of the longitudinal extension rod 3; the top of the other side is provided with a vertical guide sleeve 41 with the inner diameter of 2.5mm and the outer diameter of 4mm, and the second Kirschner wire 7 with the diameter of 2mm passes through the guide sleeve.
The operation flow is as follows: the patient lies down, and the traction table is fixed after reduction under fluoroscopy. Roughly drawing a body surface marking line according to the central line of the head and the neck. The thighbone fixing nail 1 is perpendicularly drilled into the thighbone outside the thighbone, the side position central line positioning rod 2 is installed along the installation groove 22 in the center of the thighbone fixing nail 1, the side position is seen through, and the first Kirschner wire 5 on the side position central line positioning rod 2 is adjusted to be located on the thighbone side position central line. The longitudinal extension rod 3 and the vertical connecting rod 4 are installed according to the body surface marking line, the vertical connecting rod 4 is adjusted under perspective, the perspective shadow of the guide sleeve 4 reaches an ideal standard, the second puller bolt 32 is locked, and the angle is recorded. The first second k-wire 7 is drilled directly from the guide sleeve 4, typically uppermost. And loosening the second puller bolt, moving the guide sleeve 4 forwards and downwards, aligning according to the original angle, screwing and fixing, and driving in a second kirschner wire 7. And loosening the second puller bolt again, moving the guide sleeve 4 backwards and moving the guide sleeve up and down properly, aligning according to the original angle, screwing and fixing, and driving in a third second Kirschner wire 7. And a hollow screw is installed through the guide of three second kirschner wires. Because the abduction angle and the anteversion angle are fixed, the parallelism of the three second kirschner wires can be ensured. In addition, whether the wall is fixed or not is determined according to perspective positioning.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.
Claims (5)
1. The utility model provides a be applied to femoral neck fracture screw fixation director which characterized in that: the thigh front fixing nail is provided with a tip end used for drilling into the lateral femur of the outer side of a thigh and a connecting end used for connecting the lateral midline positioning rod, the connecting end of the thigh front fixing nail is connected with one end of the lateral midline positioning rod, the other end of the lateral midline positioning rod is provided with a first mounting hole, a first Kirschner wire parallel to the axis of the first mounting hole is inserted on the lateral midline positioning rod, one end of the longitudinal extension rod is in clearance fit with the first mounting hole and is mounted on the lateral midline positioning rod through a first puller bolt, the other end of the longitudinal extension rod is provided with a second mounting hole vertical to the axis of the longitudinal extension rod, the top end of the vertical connecting rod is in clearance fit with the second mounting hole and is mounted on the longitudinal extension rod through a second puller bolt, the bottom end of the vertical connecting rod is provided with a guide sleeve vertical to the axis of the vertical connecting rod, and a second Kirschner wire for guiding and installing the hollow screw is arranged in the guide sleeve in a penetrating manner.
2. A screw fixation guide for use in femoral neck fractures according to claim 1, in which: the front fixing nail of the strand is provided with a strip-shaped long groove which is fixedly connected with the side position central line positioning rod, and the length direction of the strip-shaped long groove is consistent with that of the front fixing nail of the strand.
3. A screw fixation guide for use in femoral neck fractures according to claim 2, in which: the side position central line locating lever is provided with a mounting groove, the length direction of the mounting groove is perpendicular to the axis of the first mounting hole, the side wall of the mounting groove is provided with an adjusting groove, and a T-shaped bolt in the mounting groove penetrates through a strip-shaped long groove of the femur fixing nail and the adjusting groove to be connected with a compression nut.
4. A screw fixation guide for use in femoral neck fractures according to claim 2, in which: the front fixing nail of the strand is provided with a square section with a square cross section, and the strip-shaped long groove penetrates through the square section.
5. A screw fixation guide for use in femoral neck fractures according to claim 1, in which: all be equipped with the angle scale around first mounting hole and the second mounting hole, the tip of vertical extension rod and vertical connecting rod all is equipped with the angle mark line that is used for instructing rotation angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069328.2U CN212326541U (en) | 2020-09-21 | 2020-09-21 | Be applied to femoral neck fracture screw fixation director |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069328.2U CN212326541U (en) | 2020-09-21 | 2020-09-21 | Be applied to femoral neck fracture screw fixation director |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212326541U true CN212326541U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022069328.2U Active CN212326541U (en) | 2020-09-21 | 2020-09-21 | Be applied to femoral neck fracture screw fixation director |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212326541U (en) |
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2020
- 2020-09-21 CN CN202022069328.2U patent/CN212326541U/en active Active
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