CN103431928A - Equal length measuring device for hip joint replacement - Google Patents
Equal length measuring device for hip joint replacement Download PDFInfo
- Publication number
- CN103431928A CN103431928A CN2013104208019A CN201310420801A CN103431928A CN 103431928 A CN103431928 A CN 103431928A CN 2013104208019 A CN2013104208019 A CN 2013104208019A CN 201310420801 A CN201310420801 A CN 201310420801A CN 103431928 A CN103431928 A CN 103431928A
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- CN
- China
- Prior art keywords
- pointer
- measuring
- hip joint
- screw
- slide block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000004394 hip joint Anatomy 0.000 title abstract description 14
- 238000005259 measurement Methods 0.000 claims description 29
- 238000011540 hip replacement Methods 0.000 claims description 17
- 230000000295 complement effect Effects 0.000 claims description 10
- 210000003414 extremity Anatomy 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 210000001694 thigh bone Anatomy 0.000 abstract description 3
- 238000002224 dissection Methods 0.000 abstract 1
- 210000001624 hip Anatomy 0.000 description 5
- 230000002980 postoperative effect Effects 0.000 description 5
- 210000000588 acetabulum Anatomy 0.000 description 4
- 210000002414 leg Anatomy 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 206010031264 Osteonecrosis Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000007875 Femur Head Necrosis Diseases 0.000 description 1
- 208000007353 Hip Osteoarthritis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 208000020089 femoral neck fracture Diseases 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 210000000527 greater trochanter Anatomy 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Images
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- Prostheses (AREA)
Abstract
The invention relates to an equal length measuring device for hip joint replacement, belonging to the technical field of orthopaedic medical instruments. The device is used for measuring the replacement length when hip joint replacement is implemented. The technical scheme is as follows: a positioning screw and a positioning block of the device are fixedly arranged on the thighbone, the lower end of a guide bar is connected with the positioning block in a fastening manner, a measuring slide block slides on the guide bar, a measuring pointer moves up and down along with the measuring slide block and determines the dissection position of the hip joint before operation, and the position of the hip joint prosthesis after replacement is determined according to the indicating position of the measuring pointer after operation, so that the thighbone prosthesis after replacement mains the original length and ensures that the limbs after operation are equal in length. The device provided by the invention is simple in structure and convenient to use, fundamentally solves the positioning problem of hip joint replacement, avoids the condition that the limbs of patients after operation are not equal in length, and becomes an important apparatus for orthopaedic hip joint replacement which obtains an ideal effect. The device provided by the invention fills the blank in orthopaedic hip joint replacement and has huge popularization and using values.
Description
Technical field
The present invention relates to a kind of device of changing length of measuring when implementing hip replacement, belong to the 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 the preoperative and postoperative limbs isometric, if postoperative pair of leg length discrepancy occur, 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 there is obvious inaccuracy in this.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.The clinician can only the dependence experience be performed 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.
Summary of the invention
Technical problem to be solved by this invention is to provide the isometric measuring device of a kind of hip replacement, the position of this measuring device before and after can the Measurement accuracy hip replacement, hip prosthesis after making to replace keeps original length, avoids the postoperative leg length discrepancy that occurs.
The technical scheme solved 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, pilot hole perpendicular to dog screw is arranged on locating piece, 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 are complementary, measure on slide block sliding eye is arranged, 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 are complementary, measure on slide block and 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 is complementary 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 is complementary with the external diameter of measuring pointer, measures the pointer hole and measures pointer for being slidably matched, and the front end of measuring pointer is sharp-pointed.
The invention has the beneficial effects as follows:
Dog screw of the present invention 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 determine the anatomical position of former hip joint before operation, determine the position of the hip prosthesis after replacing after operation according to the indicating positions of measuring pointer, femoral head prosthesis after making to replace keeps original length, guarantees that postoperative limbs are isometric.The present invention is simple in structure, easy to use, has fundamentally solved the orientation problem of hip replacement, has avoided occurring after the operation in patients situation of leg length discrepancy, becomes the important utensil that assurance orthopaedics hip replacement surgery is obtained ideal effect.The present invention has filled up the blank in the orthopaedics hip replacement surgery, and great popularizing value is arranged, and has significant economic benefit and social benefit.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is using state figure of the present invention.
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
The present invention 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.
Show in figure that the pilot hole 10 perpendicular to dog screw 1 is arranged on locating piece 2, 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 is complementary, 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 sliding eye 11 is arranged, 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 is complementary, 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 loosens, and makes measurement slide block 4 can move up and down location on guide rod 3.
In figure, show, measure on slide block 4 and 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 and move together, measure pointer 6 and determine the anatomical position of former hip joint before operation, determine the position of the hip prosthesis after replacing after operation according to the indicating positions of measurement pointer 6.
Using method of the present invention:
At first the outside before greater trochanter is fixed in 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 the hip joint distraction, the 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.After having changed femoral head, will measure slide block 4 and measure pointer 6 and reset, will measure pointer 6 and be pressed on artificial thigh bone and measured, if unanimously explanation replacing length is consistent for numerical value, otherwise be adjusted.
If operation is in art can not be by the simple femoral head replacement of femoral head dislocation or replacement of total hip, the traverse measurement slide block 4, the tip of measuring pointer 6 is pressed on to the limbus of acetabulum top, form a depression, draw height number, remeasure again after complete hip joint to be changed, will measure pointer 6 and be pressed on the limbus of acetabulum top, if consistent with recessed position, illustrate that limbs length is consistent.The Patients with Aseptic Necrosis of Femoral subsided if one-sided, preoperative take the normal femoral head of offside as formwork calculation go out to subside the height, at first extrude a depression in the limbus of acetabulum top in art, then traverse measurement slide block 4 is upwards recalled to the distance of subsiding, measure pointer after die trial and should still be pressed on primary acetabulum top recess, the limbs length recovery is described, otherwise needs to change die trial.If the Patients with Aseptic Necrosis of Femoral that bilateral subsides, need preoperative ready work, if acetabular bone complete form, make tangent line at 2 on desirable acetabular bone, then make the vertical line of two tangent lines, the crossing point of vertical line is normal acetabular bone center, measure the acetabular bone diameter, its result subtracts joint space and is the femoral head diameter, and the femoral head diameter is exactly limb shortening length with the difference of the rear femoral head height that subsides, and 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), pilot hole (10) perpendicular to dog screw (1) is arranged on locating piece (2), 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) is complementary with screw, measure on slide block (4) sliding eye (11) is arranged, 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) is complementary 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) is complementary with the diameter of guide rod (3) respectively, and 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) is complementary 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 |
|---|---|---|---|
| CN2013104208019A CN103431928A (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip joint replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104208019A CN103431928A (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip joint replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103431928A true CN103431928A (en) | 2013-12-11 |
Family
ID=49685720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104208019A Pending CN103431928A (en) | 2013-09-16 | 2013-09-16 | Equal length measuring device for hip joint replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103431928A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354697A (en) * | 2018-03-27 | 2018-08-03 | 李莉 | A kind of acetabular bone measuring scale |
| CN108937944A (en) * | 2018-07-03 | 2018-12-07 | 中国人民解放军第二军医大学第二附属医院 | A kind of measuring appliance in orthopaedics replacement of total hip |
| CN111811377A (en) * | 2020-07-22 | 2020-10-23 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Measuring rod special for aviation free forging piece and measuring method thereof |
| CN119279871A (en) * | 2024-09-26 | 2025-01-10 | 北京市春立正达医疗器械股份有限公司 | A femoral prosthesis placement position controller for total hip replacement |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996040021A1 (en) * | 1995-06-07 | 1996-12-19 | Bentwood Place, Inc. | Hip offset-inset apparatus and method |
| US5700268A (en) * | 1997-01-06 | 1997-12-23 | Zimmer, Inc. | Device for measuring leg length and off-set for a total hip replacement |
| WO2001030247A1 (en) * | 1999-10-25 | 2001-05-03 | Doron Sher | Device for measuring leg length |
| CN2726562Y (en) * | 2004-04-20 | 2005-09-21 | 刘尚礼 | Acetabular cup implantation positioning device |
| CN1794952A (en) * | 2003-03-24 | 2006-06-28 | 奥索仪表公司 | System, method and tool for ensuring correct insertion of an artificial hip joint |
| CN101222889A (en) * | 2005-05-12 | 2008-07-16 | Om外科手术（Uk）有限公司 | System, method and tool for ensuring correct insertion of an artificial hip joint |
| CN101370437A (en) * | 2005-11-18 | 2009-02-18 | 罗伯特·利耶 | Surgical Alignment Guide |
| CN102740790A (en) * | 2009-11-17 | 2012-10-17 | 金斯顿女王大学 | Patient-specific guides for acetabular cup placement |
| CN203436434U (en) * | 2013-09-16 | 2014-02-19 | 张英泽 | Equal length measuring device for hip replacement |
-
2013
- 2013-09-16 CN CN2013104208019A patent/CN103431928A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996040021A1 (en) * | 1995-06-07 | 1996-12-19 | Bentwood Place, Inc. | Hip offset-inset apparatus and method |
| US5700268A (en) * | 1997-01-06 | 1997-12-23 | Zimmer, Inc. | Device for measuring leg length and off-set for a total hip replacement |
| WO2001030247A1 (en) * | 1999-10-25 | 2001-05-03 | Doron Sher | Device for measuring leg length |
| CN1794952A (en) * | 2003-03-24 | 2006-06-28 | 奥索仪表公司 | System, method and tool for ensuring correct insertion of an artificial hip joint |
| CN2726562Y (en) * | 2004-04-20 | 2005-09-21 | 刘尚礼 | Acetabular cup implantation positioning device |
| CN101222889A (en) * | 2005-05-12 | 2008-07-16 | Om外科手术（Uk）有限公司 | System, method and tool for ensuring correct insertion of an artificial hip joint |
| CN101370437A (en) * | 2005-11-18 | 2009-02-18 | 罗伯特·利耶 | Surgical Alignment Guide |
| CN102740790A (en) * | 2009-11-17 | 2012-10-17 | 金斯顿女王大学 | Patient-specific guides for acetabular cup placement |
| CN203436434U (en) * | 2013-09-16 | 2014-02-19 | 张英泽 | Equal length measuring device for hip replacement |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354697A (en) * | 2018-03-27 | 2018-08-03 | 李莉 | A kind of acetabular bone measuring scale |
| CN108937944A (en) * | 2018-07-03 | 2018-12-07 | 中国人民解放军第二军医大学第二附属医院 | A kind of measuring appliance in orthopaedics replacement of total hip |
| CN111811377A (en) * | 2020-07-22 | 2020-10-23 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Measuring rod special for aviation free forging piece and measuring method thereof |
| CN119279871A (en) * | 2024-09-26 | 2025-01-10 | 北京市春立正达医疗器械股份有限公司 | A femoral prosthesis placement position controller for total hip replacement |
| CN119279871B (en) * | 2024-09-26 | 2025-10-10 | 北京市春立正达医疗器械股份有限公司 | A femoral prosthesis placement position controller for total hip replacement |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131211 |