CN203436434U - Equal length measuring device for hip replacement - Google Patents
Equal length measuring device for hip replacement Download PDFInfo
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- CN203436434U CN203436434U CN201320572404.9U CN201320572404U CN203436434U CN 203436434 U CN203436434 U CN 203436434U CN 201320572404 U CN201320572404 U CN 201320572404U CN 203436434 U CN203436434 U CN 203436434U
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- measurement
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Abstract
The utility model provides an equal length measuring device for hip replacement, and belongs to the technical field of orthopedics medical instruments. The equal length measuring device is used for measuring replacement length in a hip replacement operation. According to the technical scheme, a positioning screw and a positioning block of the equal length measuring device are fixed on the thighbone, the lower end of a guide rod is connected with the positioning block in a fastened mode, a measurement sliding block slides on the guide rod, a measurement pointer moves up and down along with the measurement sliding block, the measurement pointer is used for confirming the anatomical position of the original hip joint before the operation, the position of a hip joint prosthesis after replacement is confirmed after the operation according to the pointing position of the measurement pointer, the original length of the hip joint prosthesis after replacement is maintained, and limbs after the operation can be equal in length. The equal length measuring device is simple in structure and convenient to use, the positioning problem of hip replacement is fundamentally solved, the phenomenon that the limbs of a patient are not equal in length after the operation is avoided, and the equal length measuring device is an important tool for guaranteeing an ideal effect of a hip replacement operation. The equal length measuring device fills a blank in the orthopedics hip replacement operation, and has great popularization and use value.
Description
Technical field
This utility model relates to a kind of device of changing length of measuring when implementing hip replacement, belongs to orthopedic medical device technical field.
Background technology
Hip replacement is the effective ways for the treatment of femur head necrosis, femoral neck fracture in elders and Hip osteoarthritis.Hip replacement surgery requires preoperative and postoperative limbs isometric, if there is postoperative pair of leg length discrepancy, can cause walks walks lamely, and has a strong impact on therapeutic effect.The judgement of hip joint height at present mainly relies on patient's experience and preoperative X-ray film measurement result, and this exists obvious inaccuracy.But because replacement areas exposure in art is limited, position exists deeply, and lacks hip joint height survey tool in special-purpose art, has brought very large inconvenience to the operation of this class operation.Clinician can only dependence experience perform the operation, this just makes accurately determining of hip prosthesis height occur very large difficulty not only often therefore extending operating time, the more important thing is and can have influence on surgical effect, make the postoperative leg length discrepancy that often occurs, be unfavorable for patient's rehabilitation.Up to the present this situation does not obtain basic change, becomes the principal element that restriction orthopaedics hip replacement surgery is obtained ideal effect, and necessary taking measures solved.
Utility model content
Technical problem to be solved in the utility model is to provide the isometric measuring device of a kind of hip replacement, the position of this measuring device before and after can Measurement accuracy hip replacement, make the hip prosthesis after displacement keep original length, avoid the postoperative leg length discrepancy that occurs.
The technical scheme solving the problems of the technologies described above is:
The isometric measuring device of a kind of hip replacement, it comprises dog screw, locating piece, guide rod, measure slide block, trip bolt, measure pointer, lock-screw, dog screw is fixedly connected with locating piece, on locating piece, there is the pilot hole perpendicular to dog screw, the bottom of guide rod is through in pilot hole, one side of locating piece has horizontal screw, screw and pilot hole vertical connection, trip bolt and screw match, measure on slide block and have sliding eye, the top of guide rod is through in sliding eye, a side of measuring slide block has horizontal screw, screw and sliding eye vertical connection, lock-screw and screw match, on measurement slide block, also have the measurement pointer hole vertical with sliding eye, measuring pointer is through in measurement pointer hole.
The isometric measuring device of above-mentioned hip replacement, the internal diameter of the sliding eye of the internal diameter of the pilot hole of described locating piece, measurement slide block matches with the diameter of guide rod respectively, and the pilot hole of locating piece, the sliding eye of measuring slide block and guide rod outer wall are for being slidably matched.
The isometric measuring device of above-mentioned hip replacement, the internal diameter in the measurement pointer hole of described measurement slide block matches with the external diameter of measuring pointer, measures pointer hole and measures pointer for being slidably matched, and the front end of measuring pointer is sharp-pointed.
The beneficial effects of the utility model are:
Dog screw of the present utility model and locating piece are fixed on femur, lower end of the guide rod and locating piece are fastenedly connected, measure slide block slides on guide rod, measure pointer and before operation, determine the anatomical position of former hip joint, after operation, according to the indicating positions of measuring pointer, determine the position of the hip prosthesis after displacement, make the femoral head prosthesis after displacement keep original length, guarantee that postoperative limbs are isometric.This utility model is simple in structure, easy to use, has fundamentally solved the orientation problem of hip replacement, has avoided occurring after operation in patients the situation of leg length discrepancy, becomes the important utensil that assurance orthopaedics hip replacement surgery is obtained ideal effect.This utility model has been filled up the blank in orthopaedics hip replacement surgery, has great popularizing value, has significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is using state figure of the present utility model.
In figure, labelling is as follows: dog screw 1, locating piece 2, guide rod 3, measurement slide block 4, trip bolt 5, measurement pointer 6, lock-screw 7, femur 8, femoral head 9, pilot hole 10, sliding eye 11, measurement pointer hole 12.
The specific embodiment
This utility model is comprised of dog screw 1, locating piece 2, guide rod 3, measurement slide block 4, trip bolt 5, measurement pointer 6, lock-screw 7.
In figure, show, dog screw 1 is fixedly connected with locating piece 2, and the effect of dog screw 1 is to be fixed on femur 8, the position of locating piece 2 is fixed simultaneously.
In figure, show on locating piece 2, there is the pilot hole 10 perpendicular to dog screw 1, the bottom of guide rod 3 is through in pilot hole 10, the diameter of the internal diameter of pilot hole 10 and guide rod 3 matches, pilot hole 10 is with guide rod 3 outer walls for being slidably matched, and guide rod 3 can slide in pilot hole 10, can not rock simultaneously.One side of locating piece 2 has horizontal screw, screw and pilot hole 10 vertical connections, and trip bolt 5 screws in screw, and its front end withstands on guide rod 3 sidewalls in pilot hole 10, guide rod 3 can be tightened or loosened.
In figure, show, measure on slide block 4 and have sliding eye 11, the top of guide rod 3 is through in sliding eye 11, the diameter of the internal diameter of sliding eye 11 and guide rod 3 matches, sliding eye 11 is with guide rod 3 outer walls for being slidably matched, and guide rod 3 can slide in sliding eye 11, can not rock simultaneously.A side of measuring slide block 4 has horizontal screw, screw and sliding eye 11 vertical connections, and lock-screw 7 screws in screw, and guide rod 3 is held out against or loosened, and makes to measure slide block 4 and can move up and down location on guide rod 3.
In figure, show, on measurement slide block 4, also have the measurement pointer hole 12 vertical with sliding eye 11, measuring pointer 6 is through in measurement pointer hole 12, measure pointer hole 12 and measure pointer 6 for being slidably matched, measuring pointer 6 can slide in measuring pointer hole 12, can not rock, the front end of measuring pointer 6 is sharp-pointed, accurately indicating positions simultaneously.When measurement slide block 4 moves up and down along guide rod 3, drive measurement pointer 6 to move together, measure pointer 6 and before operation, determine the anatomical position of former hip joint, after operation, according to the indicating positions of measurement pointer 6, determine the position of the hip prosthesis after replacing.
Using method of the present utility model:
First outside before greater trochanter is fixed on to dog screw 1 in the lower end of utensil, what if in simple femoral head replacement operation and art, femoral head can be from hip joint distraction, traverse measurement slide block 4, the measurement pointer 6 of measuring on slide block 4 is pressed on femoral head, draw numerical value, then traverse measurement slide block 4 and measurement pointer 6, make it not affect the carrying out of operation.Changed after femoral head, will measure slide block 4 and measure pointer 6 resets, measurement pointer 6 is pressed on artificial thigh bone and is measured, if unanimously explanation replacing length is consistent for numerical value, otherwise adjusted.
If operation is in art can not be by the simple femoral head replacement of femoral head dislocation or replacement of total hip, traverse measurement slide block 4, the tip of measuring pointer 6 is pressed on to limbus of acetabulum top, form a depression, draw height number, after complete hip joint to be changed, remeasure again, measurement pointer 6 is pressed on to limbus of acetabulum top, if consistent with recessed position, illustrate that limbs length is consistent.The Patients with Aseptic Necrosis of Femoral subsiding if one-sided, preoperative take the normal femoral head of offside as formwork calculation go out to subside height, in art, first in limbus of acetabulum top, extrude a depression, then traverse measurement slide block 4 is upwards recalled to the distance of subsiding, after die trial, measure pointer and should still be pressed on primary acetabulum top recess, limbs length recovery is described, otherwise need to changes die trial.If the Patients with Aseptic Necrosis of Femoral that bilateral subsides, need preoperative ready work, if acetabular bone complete form, on desirable acetabular bone, make tangent line at 2, then make the vertical line of two tangent lines, the crossing point of vertical line is normal acetabular bone center, measure acetabular bone diameter, its result subtracts joint space and is femoral head diameter, femoral head diameter with subside after the difference of femoral head height be exactly limb shortening length, remaining operation is with one-sided hip replacement.
Claims (3)
1. the isometric measuring device of hip replacement, it is characterized in that: it comprises dog screw (1), locating piece (2), guide rod (3), measure slide block (4), trip bolt (5), measure pointer (6), lock-screw (7), dog screw (1) is fixedly connected with locating piece (2), on locating piece (2), there is the pilot hole (10) perpendicular to dog screw (1), the bottom of guide rod (3) is through in pilot hole (10), one side of locating piece (2) has horizontal screw, screw and pilot hole (10) vertical connection, trip bolt (5) matches with screw, measure on slide block (4) and have sliding eye (11), the top of guide rod (3) is through in sliding eye (11), a side of measuring slide block (4) has horizontal screw, screw and sliding eye (11) vertical connection, lock-screw (7) matches with screw, measure the upper measurement pointer hole (12) vertical with sliding eye (11) in addition of slide block (4), measuring pointer (6) is through in measurement pointer hole (12).
2. the isometric measuring device of hip replacement according to claim 1, it is characterized in that: the internal diameter of the sliding eye (11) of the internal diameter of the pilot hole (10) of described locating piece (2), measurement slide block (4) matches with the diameter of guide rod (3) respectively, the pilot hole (10) of locating piece (2), the sliding eye (11) of measuring slide block (4) and guide rod (3) outer wall are for being slidably matched.
3. the isometric measuring device of hip replacement according to claim 2, it is characterized in that: the internal diameter in the measurement pointer hole (12) of described measurement slide block (4) matches with the external diameter of measuring pointer (6), measure pointer hole (12) and measure pointer (6) for being slidably matched, the front end of measuring pointer (6) is sharp-pointed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572404.9U CN203436434U (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572404.9U CN203436434U (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203436434U true CN203436434U (en) | 2014-02-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320572404.9U Expired - Fee Related CN203436434U (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203436434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103431928A (en) * | 2013-09-16 | 2013-12-11 | 张英泽 | Equal length measuring device for hip joint replacement |
-
2013
- 2013-09-16 CN CN201320572404.9U patent/CN203436434U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103431928A (en) * | 2013-09-16 | 2013-12-11 | 张英泽 | Equal length measuring device for hip joint replacement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140219 Termination date: 20180916 |