CN215192001U - Force line rod guiding device for assisting distal femur rotation osteotomy - Google Patents
Force line rod guiding device for assisting distal femur rotation osteotomy Download PDFInfo
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- CN215192001U CN215192001U CN202120153171.3U CN202120153171U CN215192001U CN 215192001 U CN215192001 U CN 215192001U CN 202120153171 U CN202120153171 U CN 202120153171U CN 215192001 U CN215192001 U CN 215192001U
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Abstract
The utility model relates to the technical field of orthopedic surgery instruments and discloses a force line rod guiding device for assisting the rotation osteotomy of the distal end of a femur, which comprises a rectangular positioner and an arc positioner, wherein the rectangular positioner and the arc positioner are detachably connected and combined for use, the rectangular positioner is provided with a through hole for the force line rod to pass through, a metal wire vertical to the through hole is embedded on the upper surface of the rectangular positioner, the arc positioner comprises an arc body, a plurality of groups of guide pin holes are arranged on the arc surface of the arc body, and each group of guide pin holes comprises two symmetrically arranged guide pin holes; in a combined use state, the symmetrical central lines of the two rows of guide pin holes are a knife slot and are on the same axis with the metal wire, and each guide pin hole penetrates through the bottom of the arc-shaped body and is arranged at a preset angle and interval. The utility model discloses a power line pole guider conveniently confirms the position and the angle of osteotomy line to can help make clear and determine the angle that osteotomy line near-end and distal end need rotatory correction behind the distal femur osteotomy, improved the rotatory accuracy nature of cutting the bone operation of distal femur.
Description
Technical Field
The utility model relates to the technical field of orthopedic surgery instruments, in particular to a force line rod guiding device for assisting the rotary osteotomy of a distal end of a femur.
Background
The lower limb force line is also called as a lower limb force axis or a lower limb mechanical axis, and passes through the femoral head center (or hip joint center), the patella center (or knee joint center) and the ankle joint center, and is basically consistent with the long axis of the crus. In the lower limb osteotomy operation, a metal force line rod is required to be used for simulating and displaying a lower limb force line under perspective, and the osteotomy operation is carried out on an osteotomy part set by a doctor and is vertical to the force line. In the femoral torsion deformity correction surgery, in order to correct the non-physiological degree of over-rotation deformity of the femur, the angle of the deformity is generally determined by measuring the total length CT of the femur, and the proximal and distal femurs of the osteotomy line are twisted correspondingly at the time of osteotomy according to the angle to restore the normal femoral anteversion angle, and then the steel plate is used for internal fixation at the angle.
Because no special femur far-end rotary osteotomy guiding tool exists at present, when the femur far-end is osteotomy, an operator generally estimates the position and the angle of an osteotomy line, and when the proximal end and the distal end of the osteotomy line are twisted and corrected after the osteotomy, the rotary angle is mostly determined by a metal protractor and artificial visual inspection, so that the osteotomy operation is inconvenient, and large errors are easy to generate.
SUMMERY OF THE UTILITY MODEL
The technical purpose is as follows: for solving above-mentioned technical problem shortcoming, the utility model provides a power line pole guider for assisting rotatory osteotomy of thighbone distal end operation, its installation of being convenient for is dismantled, conveniently confirms position and the angle of thighbone distal end osteotomy line and cuts the angle that thighbone distal end and near-end twisted and corrected after the bone, improves the rotatory accuracy nature of cutting the operation of thighbone distal end.
The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:
a force line rod guiding device for assisting a distal femur rotation osteotomy procedure, for positioning an osteotomy line portion and a rotation correction angle of the osteotomy portion, characterized in that: the wire drawing device comprises a rectangular positioner and an arc positioner which are detachably connected and combined for use, wherein the rectangular positioner is provided with a through hole for a metal force wire rod to pass through, and a metal wire which is embedded on the upper surface, is vertical to the axis of the through hole and is positioned on the axis of the rectangular positioner;
the arc positioner comprises an arc body, a plurality of groups of guide pin holes are arranged on the arc surface of the arc body, and each group of guide pin holes comprises two symmetrically arranged guide pin holes; in a combined use state, the symmetrical central lines of the two rows of guide pin holes and the metal wire are on the same axis, and each guide pin hole penetrates through the bottom of the arc-shaped body and is arranged at a preset angle and a preset distance.
Specifically, the bottom center of the arc-shaped body is provided with a cutter groove for a saw blade to pass through, the axis of the cutter groove is the symmetrical center line of the two rows of guide pin holes, and the front end and the rear end of the cutter groove penetrate through the arc-shaped body.
Specifically, the arc positioner is provided with six groups of guide pin holes downwards along the top end of the arc body, and the centers of the guide pin holes on two sides of the symmetrical center line are positioned on the same axis.
Specifically, six groups of guide pin holes include the first group guide pin hole that the bottom of perpendicular to arc body set up, and the second group guide pin hole that is 20 with the guide pin hole axis contained angle in first guide pin hole and adjacent guide pin hole axis contained angle with the third group guide pin hole, fourth group guide pin hole, fifth group guide pin hole and the sixth group guide pin hole that 5 progressively increased.
Specifically, the rectangular positioner and the arc positioner are made of a radiolucent material.
Specifically, the rectangular positioner is provided with two blind holes which are symmetrical in the horizontal direction on the surface adjacent to the arc positioner, and the arc positioner is provided with a connecting column matched with the blind holes.
Specifically, one surface of the rectangular positioner, which is adjacent to the arc positioner, is provided with more than one pair of blind holes in the vertical direction.
Specifically, the arc locator still includes the horizontal body that sets up in arc body front end, and the spliced pole sets up on the lateral wall of horizontal body.
Has the advantages that: due to the adoption of the technical scheme, the utility model discloses following technological effect has:
the utility model discloses a power line pole guider for assisting rotatory osteotomy of thighbone distal end operation, position and the angle of osteotomy line are confirmed through the metal wire help on the rectangle locator, and the arc locator is connected in the installation on the rectangle locator, the angle of correcting as required selects corresponding guide pin hole to squeeze into the angle that the guide pin can accurate location selection is corrected in the multiunit guide pin hole of symmetry center line both sides on the arc locator, and set up the sword groove that conveniently cuts the bone saw bit and stretch into in the bottom of arc locator, cut the bone operation.
Drawings
FIG. 1 is a schematic view of the force wire rod guiding device for assisting the distal femur rotation osteotomy of the present invention in use;
FIG. 2 is a perspective view of the rectangular positioner of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a perspective view of the arcuate positioner of FIG. 1;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a perspective front view of FIG. 4;
FIG. 7 is a perspective view of FIG. 4;
wherein, 100-metal force line pole, 1-rectangular locator, 11-through hole, 12 blind hole, 13-metal wire; 2-arc positioner, 21-horizontal body, 22-arc body, 230-first group of guide pin holes, 231-second group of guide pin holes, 232-third group of guide pin holes, 233-fourth group of guide pin holes, 234-fifth group of guide pin holes, 235-sixth group of guide pin holes, 24-connecting column and 25-cutter slot.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a force line pole guiding device for positioning a force line pole 100, which comprises a rectangular positioner 1 and an arc positioner 2 which can be detachably connected and used in combination.
As shown in fig. 2 and 3, the rectangular positioner 1 is provided with a through hole 11 for the force wire rod 100 to pass through, and the surface of the rectangular positioner 1, which is provided with the metal wire perpendicular to the axis of the through hole 11 and is adjacent to the arc positioner 2, is provided with two blind holes 12 which are symmetrical in the horizontal direction.
As shown in fig. 4 to 7, the arc positioner 2 includes an arc body 22 and a horizontal body 21 disposed at the front end of the arc body 22, the horizontal body 21 is provided with a connection column 24 matched with the blind hole 12, so as to detachably connect the rectangular positioner 1 and the arc body 22.
As shown in fig. 4 to 7, in this embodiment, a plurality of sets of guide pin holes are disposed on the arc surface of the arc body 22, that is, six sets of guide pin holes 230 are sequentially disposed on the arc positioner 2 along the top end of the arc body 22; 231; 232; 233; 234; 235; 236, each group of guide pin holes comprises two symmetrically arranged guide pin holes, and the centers of the guide pin holes on both sides of the central line are located on the same straight line.
Furthermore, the utility model discloses in, can set up the sword groove 25 that supplies the osteotome to pass at the bottom center of arc body 2, the axis of sword groove 25 is parallel with the central line in every group guide pin hole, and arc body 22 is run through at sword groove 25 front and back both ends, and preferred rectangle locator 1 and arc locator 2 are made with the material of transmission line.
In the combined use state, the symmetrical center lines of the two rows of guide pin holes are a knife slot, the guide pin holes and the metal wire are on the same axis, each group of guide pin holes penetrate through the arc-shaped body 22 and are arranged at preset angles and intervals, if the first group of guide pin holes 231 are arranged perpendicular to the bottom of the arc-shaped body 22 and are used as a reference zero angle, the included angle between the axis of the guide pin holes of the second group of guide pin holes 232 and the first guide pin holes 231 is 20 degrees, the included angle between the axis of the guide pin holes of the second group of guide pin holes 232 and the axis of the guide pin holes of the first group of guide pin holes 232 is from the second group of guide pin holes 232 to the sixth group of guide pin holes 236, and the included angle between the axis of the guide pin holes is gradually increased by 5 degrees.
Specifically, the utility model discloses a diameter of the through-hole of rectangle director can set up to 0.5cm for embolia the metal power line pole that the diameter is 5mm, the width of the inlaid metal wire in surface sets up to 2mm, is located the position and the angle that the axis position is used for assistance-localization real-time osteotomy line, and the diameter of blind hole is 5 mm. The aperture of each guide pin hole can be set to be 2mm, the cutter groove is used for accommodating an osteotomy saw blade, and the central line of the cutter groove is on the same axis with the metal wire.
When the force line rod guiding device is used, after a doctor determines the distal femur osteotomy part and the angle of rotary correction through a plan before the operation, a rectangular positioner is installed on the force line rod, the force line rod is fixed on the proper position of the lower limb of a patient, and the positions of the force line rod and the guiding device are adjusted, so that the near end of the force line rod can correspond to the central point of the femoral head and the far end of the force line rod corresponds to the central point of the ankle point under perspective, and the force line rod and the lower limb force line are overlapped; the position of the rectangular positioner is adjusted along the force line rod, so that the metal wire is just positioned at the osteotomy position determined before the operation under the perspective. Then, the arc-shaped positioner is arranged on the rectangular positioner, corresponding guide pin holes are selected from a plurality of guide pin holes on two sides of a symmetrical center line on the rectangular positioner, 1 guide pin with the diameter of 2mm is respectively driven into the guide pin holes in the near row and the far row, and the included angle of the axis of the selected guide pin hole is equal to the size of the angle to be corrected (other detailed operations of a doctor on a patient are omitted, and only the description is closely related to the osteotomy operation); after the guide pin is driven in, the osteotome extends into the incision along the incision groove to perform osteotomy operation; and after the osteotomy is completed, removing the force line rod and pulling out the guide pins to remove the guide device, inserting the two guide pins with the diameter of 1.5mm into the manufactured near-row guide pin holes and far-row guide pin holes, and rotating the osteotomy to enable the two guide pins to be parallel to complete the operation. At this time, the steel plate internal fixation operation can be performed.
Preferably, more than one pair of blind holes 12 can be arranged on the surface of the rectangular positioner 1 adjacent to the arc positioner 2 in the vertical direction, so that the position of the arc positioner 2 can be conveniently adjusted according to different conditions.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. A force wire rod guide for assisting in a femoral distal rotation osteotomy procedure for positioning a force wire rod (100), characterized by: the device comprises a rectangular positioner (1) and an arc positioner (2) which are detachably connected and combined for use, wherein the rectangular positioner (1) is provided with a through hole (11) for a metal force line rod (100) to pass through, and a metal line (13) which is embedded on the upper surface, is vertical to the axis of the through hole (11) and is positioned on the axis of the rectangular positioner (1);
the arc-shaped positioner (2) comprises an arc-shaped body (22), a plurality of groups of guide pin holes are formed in the arc-shaped surface of the arc-shaped body (22), and each group of guide pin holes comprises two symmetrically arranged guide pin holes; in a combined use state, the symmetrical central lines of the two rows of guide pin holes and the metal wire (13) are on the same axis, and each guide pin hole penetrates through the bottom of the arc-shaped body (22) and is arranged at a preset angle and interval.
2. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 1, wherein: the center of the bottom of the arc-shaped body (22) is provided with a cutter groove (25) for a bone cutting saw blade to pass through, the axis of the cutter groove (25) is the symmetrical center line of the two rows of guide pin holes, and the front end and the rear end of the cutter groove (25) penetrate through the arc-shaped body (22).
3. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 1, wherein: the arc-shaped positioner (2) is provided with six groups of guide pin holes (230; 231; 232; 233; 234; 235; 236) in sequence along the top end of the arc-shaped body (22), and the centers of the guide pin holes on the two sides of the symmetrical center line are positioned on the same axis.
4. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 3, wherein: the six groups of guide pin holes comprise a first group of guide pin holes (231) which are vertical to the bottom of the arc-shaped body (22), a second group of guide pin holes (232) which form an included angle of 20 degrees with the axis of the guide pin hole of the first guide pin hole (231), and a third group of guide pin holes (233), a fourth group of guide pin holes (234), a fifth group of guide pin holes (235) and a sixth group of guide pin holes (236) which form an included angle of the axis of the adjacent guide pin hole by 5 degrees in an increasing manner.
5. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 1, wherein: the rectangular positioner (1) and the arc positioner (2) are made of a radiolucent material.
6. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 1, wherein: one side of the rectangular positioner (1) adjacent to the arc positioner (2) is provided with two blind holes (12) which are symmetrical in the horizontal direction, and the arc positioner (2) is provided with a connecting column (24) matched with the blind holes (12).
7. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 6, wherein: and more than one pair of blind holes (12) are arranged on one surface of the rectangular positioner (1) adjacent to the arc positioner (2) in the vertical direction.
8. The force wire rod guide for assisting in a femoral distal rotation osteotomy procedure of claim 6, wherein: the arc positioner (2) further comprises a horizontal body (21) arranged at the front end of the arc body (22), and the connecting column (24) is arranged on the outer side wall of the horizontal body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120153171.3U CN215192001U (en) | 2021-01-20 | 2021-01-20 | Force line rod guiding device for assisting distal femur rotation osteotomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120153171.3U CN215192001U (en) | 2021-01-20 | 2021-01-20 | Force line rod guiding device for assisting distal femur rotation osteotomy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215192001U true CN215192001U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120153171.3U Active CN215192001U (en) | 2021-01-20 | 2021-01-20 | Force line rod guiding device for assisting distal femur rotation osteotomy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215192001U (en) |
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2021
- 2021-01-20 CN CN202120153171.3U patent/CN215192001U/en active Active
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