CN109700498B - Tibia proximal osteotomy device - Google Patents
Tibia proximal osteotomy device Download PDFInfo
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- CN109700498B CN109700498B CN201910098732.1A CN201910098732A CN109700498B CN 109700498 B CN109700498 B CN 109700498B CN 201910098732 A CN201910098732 A CN 201910098732A CN 109700498 B CN109700498 B CN 109700498B
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- tibia
- pointer
- osteotomy
- connecting rod
- positioning
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 87
- 210000000988 bone and bone Anatomy 0.000 claims description 23
- 210000003423 ankle Anatomy 0.000 claims description 15
- 210000000544 articulatio talocruralis Anatomy 0.000 claims description 3
- 210000000629 knee joint Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 241000469816 Varus Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 238000011883 total knee arthroplasty Methods 0.000 description 1
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Abstract
The invention relates to a tibia proximal end osteotomy device, which comprises a joint rod with a pointer, a tibia osteotomy guide plate and two osteotomy thickness limiters, wherein the joint rod is arranged on a joint rod with a condyle, the tibia osteotomy guide plate is arranged on the joint rod with the pointer, the two osteotomy thickness limiters are arranged on the tibia osteotomy guide plate, the tibia osteotomy guide plate comprises a tibia fixing plate matched with the radian of tibia and a connecting plate fixed on the tibia fixing plate, the connecting plate and the pointer end of the joint rod with the pointer are connected through a pressurizing screw rod, so that the connecting plate can rotate relative to the joint rod with the pointer, and the tibia fixing plate is provided with an osteotomy saw blade guide slot, a positioning round hole and a nail hole.
Description
Technical Field
The invention relates to a proximal tibial osteotomy device.
Background
For patients with advanced knee joint pathology, total knee arthroplasty is a widely used and effective treatment. The alignment technique is the basis of knee replacement and refers to the method by which the surgeon performs osteotomies and installs the prosthesis in the alignment during the joint replacement procedure. The traditional alignment method is that mechanical axis alignment is carried out, namely, osteotomy and prosthesis installation are carried out according to a lower limb mechanical axis formed by a femoral head center-knee joint center-ankle joint center connecting line, so that the rotation axis of the knee joint prosthesis after replacement is perpendicular to the mechanical axis and does not incline inwards, but by adopting the alignment technology, the formed rotation axis is inconsistent with the movement axis of the knee joint of a patient, so that after the total knee joint replacement operation, the patient cannot fully recover the physiological movement axis, the effect of the joint replacement operation can be influenced, and the subsequent life quality of the patient is influenced; in order to solve the above problems, in recent years, the emerging dynamics theory of bone cutting and prosthesis installation according to the knee joint movement axis of the patient is expected to completely recover the movement axis of the patient, but the tibia of the person naturally turns inwards, so that the tibia also maintains the varus position bone cutting according to the dynamics theory of bone cutting, and the current operation device needs to manually adjust the varus angle of the bone cutting module to achieve the effect, so that the accuracy is poor.
Disclosure of Invention
The invention solves the defects of the prior art and provides the proximal tibia osteotomy device which is convenient to adjust and can realize the adjustment of the varus-valgus angle of the tibia.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a proximal tibia osteotomy device comprises a connecting rod 3 with a pointer, which is arranged on a connecting rod 4 of an ankle embracing device, a tibia osteotomy guide plate 2 with a pointer, which is arranged on the connecting rod 3 with the pointer, and two osteotomy thickness limiters 1, which are arranged on the tibia osteotomy guide plate 2,
the tibia osteotomy guide plate 2 comprises a tibia fixing plate 26 matched with the tibia radian and a connecting plate 25 fixed on the tibia fixing plate 26, the connecting plate 25 is connected with a pointer end 31 with a pointer connecting rod 3 through a pressurizing screw rod 32, so that the connecting plate 25 can rotate relative to the pointer connecting rod 3 by taking the pressurizing screw rod as an axis, the angle relation between the connecting plate 25 and the pointer connecting rod 3 can be fixed by screwing the pressurizing screw rod, an osteotomy saw blade guide slot 21, a positioning round hole 24 and a nail hole 22 are arranged on the tibia fixing plate 26, and the two positioning round holes 24 are symmetrically arranged on the tibia fixing plate 26 along the center line of the long side of the osteotomy saw blade guide slot 21;
the bone cutting thickness limiter 1 comprises a vertical moving device, a positioning rod 14 for positioning the vertical moving device on a tibia fixing plate 26 and a pen needle 12 for feeding back the thickness of tibia to be sawed to the tibia cutting guide plate 2, wherein the pen needle 12 is L-shaped, the end part of the horizontal end of the pen needle 12 is arranged at the action end of the vertical moving device, the end part of the vertical end of the pen needle 12 is contacted with the highest end or the lowest end surface of the bone surface of the platform on the inner side and the outer side of the tibia, the positioning rod 14 is arranged at the bottom of the vertical moving device, the positioning rod 14 is L-shaped, the end part of the vertical end of the positioning rod 14 is movably arranged at the bottom of an adjusting cylinder 15, the central shaft of the adjusting cylinder 15 can be used as the center for rotating the positioning rod 14, the end part of the horizontal end of the positioning rod 14 is matched with the size of the positioning round hole 24, the positioning rod 14 is inserted into the positioning round hole 24, and the positioning rod 14 can rotate in the positioning round hole 24.
Further, the vertical moving device is a screw rod driving mechanism.
Further, the vertical moving device comprises an adjusting cylinder 15 with an opening at the upper end and a hollow middle part, an adjusting screw 11 capable of rotating around an axis is coaxially arranged in the adjusting cylinder 15, a guide groove which is axially arranged on the side wall of the adjusting cylinder 15 and is communicated with the inside of the adjusting cylinder 15 is formed in the side wall of the adjusting cylinder 15, a sliding block is arranged at the position of the guide groove in the adjusting cylinder 15, the sliding block is screwed on the adjusting screw 11, the pen needle 12 is fixed on the sliding block and is linked with the sliding block, and the adjusting screw 11 and the sliding block form a screw rod driving mechanism.
Further, the adjusting cylinder 15 is provided with a thickness scale 13 along the guide groove for displaying the up-and-down moving distance of the pen needle 12.
Furthermore, the pressurizing screw is provided with a nut which is convenient for hand rotation.
Further, the connecting plate 25 is provided with an angle scale 23 for displaying the rotation angle of the connecting rod 3 with the pointer, and the position of the angle scale 23 is matched with the position of the pointer end 31 of the connecting rod 3 with the pointer.
Further, the end of the vertical end of the pen needle 12 faces the tibia surface to form a plane 121 for positioning conveniently, and positioning accuracy is ensured by positioning the plane of the pen needle 12 and the plane of the tibia.
With the adoption of the structure, the ankle joint center is determined through the ankle embracing device 5, the ankle embracing device connecting rod 4 and the pointer connecting rod 3 are used for determining the mechanical axis of the tibia, then the osteotomy thickness limiter 1 on two sides of the tibia osteotomy guide plate is adjusted, the positions of the pen needles 12 are adjusted to the set positions according to the thickness scales 13, then the end parts of the two pen needles 12 are respectively contacted with the highest position and the lowest position of the internal and external platform bone surfaces of the tibia, the heights of the end parts of the positioning rods 14 on the two osteotomy thickness limiter 1 are changed, and as the positioning rods 14 can rotate in the positioning round holes 24, the tibia fixing plate 26 can rotate on the pointer connecting rod 3 according to the angle of the osteotomy thickness limiter 1, meanwhile, the pointer end 31 with the pointer connecting rod 3 shows the angle of internal and external turnover, after the angle is determined to be correct, the pressurizing screw rod 32 is screwed, the tibia osteotomy 2 is fixed with the pointer connecting rod 3, the tibia osteotomy guide plate 2 is fixed on the tibia through the nail holes 22 on the tibia osteotomy guide plate 2, the heights of the end parts of the positioning rods 14 are changed, and the positioning rods 14 on the tibia osteotomy guide plate can be disassembled, the positioning rods can be rotated in the positioning round holes 24, and the osteotomy saw blade can be exposed at the osteotomy guide plate 2, and the osteotomy saw blade can be closed. By adopting the mode, the thickness of the cut bone can be determined and limited in the vertical direction when the tibia cut bone guide plate is turned inwards, so that the inside-out turning cut bone of the tibia is realized.
In summary, the invention solves the defects of the prior art, and provides the proximal tibia osteotomy device for the internal and external turning tibia, which has high precision and convenient adjustment, and can realize the proximal tibia osteotomy, so as to realize the dynamic alignment of knee joint replacement operation, keep the original angle of the knee joint movement axis of a patient after operation, facilitate the rapid rehabilitation of the patient, and improve the knee joint movement satisfaction degree of the patient after the replacement operation and the life quality.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
FIG. 3 is a schematic view of the structure of the osteotomy thickness limiter of the present invention.
Fig. 4 is a schematic view of the structure of the tibial osteotomy guide plate of the present invention.
In the drawing, 1, an osteotomy thickness limiter; 2. a tibial osteotomy guide plate; 11. adjusting a screw; 12. a pen needle; 121. a plane; 13. a thickness scale; 14. a positioning rod; 15. an adjustment cylinder; 21. osteotomy saw blade guide slot; 22. a nail hole; 23. an angle scale; 24. positioning the round hole; 25. a connecting plate; 26. a tibial fixation plate; 3. a connecting rod with a pointer; 31. a pointer end; 32. a pressurizing screw; 4. an ankle embracing device connecting rod; 5. an ankle embracing device.
Detailed Description
The invention will be further described in detail below with reference to the drawings and examples of implementation for a better understanding of the invention, but the embodiments of the invention are not limited thereto, and the scope of protection of the invention also relates to equivalent technical means that can be conceived by a person skilled in the art based on the inventive concept.
As shown in fig. 1 to 4, a proximal tibia osteotomy device comprises a pointer-equipped connecting rod 3 mounted on an ankle-embracing connecting rod 4, a tibia osteotomy guide plate 2 mounted on the pointer-equipped connecting rod 3, and two osteotomy thickness limiters 1 mounted on the tibia osteotomy guide plate 2,
the tibia osteotomy guide plate 2 comprises a tibia fixing plate 26 matched with the tibia radian and a connecting plate 25 fixed on the tibia fixing plate 26, wherein the connecting plate 25 is connected with a pointer end 31 with a pointer connecting rod 3 through a pressurizing screw rod 32, so that the connecting plate 25 can rotate relative to the pointer connecting rod 3, the tibia fixing plate 26 is provided with an osteotomy saw blade guide slot 21, a positioning round hole 24 and a nail hole 22, and the two positioning round holes 24 are symmetrically arranged on the tibia fixing plate 26 along the central line of the long side of the osteotomy saw blade guide slot 21; the connecting plate 25 is provided with a screw hole at the position along the central line of the long side of the osteotomy saw blade guide slot 21, the connecting rod 3 with the pointer is correspondingly provided with a through hole, the pressurizing screw 32 is provided with a nut which is convenient for hand screwing, and when the connecting plate 25 is fixed with the connecting rod 3 with the pointer, the connecting plate 25 is tightly pressed with the connecting rod 3 with the pointer to realize fixation by rotating the pressurizing screw 32; the connecting plate 25 is provided with an angle scale 23 for displaying the rotation angle of the connecting rod 3 with the pointer, and the position of the angle scale 23 is matched with the position of the pointer end 31 of the connecting rod 3 with the pointer.
The osteotomy thickness limiter 1 comprises a vertical moving device, a positioning rod 14 for positioning the vertical moving device on a tibia fixing plate 26 and a pen needle 12 for feeding back the thickness of tibia to be sawed to a tibia osteotomy guide plate 2, wherein the vertical moving device comprises an adjusting cylinder 15 with an opening at the upper end and a hollow middle part, an adjusting screw 11 capable of rotating around an axis is coaxially arranged in the adjusting cylinder 15, a guide groove which is axially distributed and communicated with the inside of the adjusting cylinder 15 is formed in the side wall of the adjusting cylinder 15, a sliding block is arranged in the position of the guide groove in the adjusting cylinder 15, the sliding block is screwed on the adjusting screw 11, the pen needle 12 is fixed on the sliding block and is linked with the sliding block, and the adjusting screw 11 and the sliding block form a screw driving mechanism; the adjusting cylinder 15 is provided with a thickness scale 13 along the guide groove for displaying the up-and-down moving distance of the pen needle 12.
The pen needle 12 is L-shaped, the end of the horizontal end of the pen needle 12 is arranged at the action end of the vertical moving device, the end of the vertical end of the pen needle 12 is contacted with the highest end or the lowest end face of the bone surface of the platform on the inner side and the outer side of the tibia, the positioning rod 14 is arranged at the bottom of the vertical moving device, the positioning rod 14 is L-shaped, the end of the vertical end of the positioning rod 14 is movably arranged at the bottom of the adjusting cylinder 15, so that the positioning rod 14 can rotate by taking the central shaft of the adjusting cylinder 15 as the center, the end of the horizontal end of the positioning rod 14 is matched with the size of the positioning round hole 24, the positioning rod 14 is inserted into the positioning round hole 24, and the positioning rod 14 can rotate in the positioning round hole 24.
In this embodiment, the face of the end of the vertical end of the pen needle 12 facing the tibia is a plane 121 that is convenient to position, and the accuracy of positioning is ensured by positioning the plane of the pen needle 12 and the plane of the tibia.
When the tibia saw is used, the ankle embracing device 5 is fixed on an ankle joint, the center of the ankle joint is determined through the ankle embracing device 5, the pointer-carrying connecting rod 3 is connected with the ankle embracing device connecting rod 4, the mechanical axis of tibia is determined through the ankle embracing device connecting rod 4 and the pointer-carrying connecting rod 3, then the osteotomy thickness limiter 1 on two sides of a tibia osteotomy guide plate is adjusted, the positions of the pen needles 12 are adjusted to set positions according to thickness scales 13, then the end parts of the two pen needles 12 are respectively contacted with the highest position and the lowest position of the inner and outer plateau bone surfaces of the tibia, the heights of the end parts of the positioning rods 14 on the two osteotomy thickness limiter 1 are changed, and as the positioning rods 14 can rotate in the positioning round holes 24, the tibia fixing plate 26 can rotate on the pointer-carrying connecting rod 3 according to the angle of the osteotomy thickness limiter 1, meanwhile, the pointer ends 31 with the pointer connecting rod 3 show the inner and outer turnover angles, after the angle is correct, the pressurizing screw rods 32 are tightly screwed, the osteotomy guide plate 2 is fixed with the pointer-carrying pointer connecting rod 3, after the fixing, the tibia saw 2 is fixed towards the highest position and the lowest position of the plateau bone surface on the tibia, the tibia saw 2, the positioning rod 14 is fixed on the tibia saw, the tibia saw 2 is then the tibia saw body is dismounted, the osteotomy saw blade is exposed, and the tibia saw blade is exposed, and the end. By adopting the mode, the thickness of the cut bone can be determined and limited in the vertical direction when the tibia cut bone guide plate is turned inwards, so that the inside-out turning cut bone of the tibia is realized.
In addition, it should be noted that, the present invention is not limited to the above embodiments, and as long as the parts thereof are not described in specific dimensions or shapes, the parts may be any dimensions or shapes suitable for the structures thereof, and any changes in the material composition thereof, and all the structural designs provided by the present invention are all modifications of the present invention, which should be considered to be within the scope of the present invention.
Claims (5)
1. A proximal tibial osteotomy device, characterized in that: comprises a connecting rod (3) with a pointer, which is arranged on a connecting rod (4) of an ankle embracing device, a tibia osteotomy guide plate (2) which is arranged on the connecting rod (3) with the pointer, and two osteotomy thickness limiters (1) which are arranged on the tibia osteotomy guide plate (2),
the tibia osteotomy guide plate (2) comprises a tibia fixing plate (26) matched with the tibia radian and a connecting plate (25) fixed on the tibia fixing plate (26), wherein the connecting plate (25) is connected with a pointer end (31) with a pointer connecting rod (3) through a pressurizing screw (32), so that the connecting plate (25) can rotate relative to the pointer connecting rod (3) with the pressurizing screw (32) as an axis, the tibia fixing plate (26) is provided with an osteotomy saw blade guide groove (21), a positioning round hole (24) and a nail hole (22), and the two positioning round holes (24) are symmetrically arranged on the tibia fixing plate (26) along the center line of the long side of the osteotomy saw blade guide groove (21);
the osteotomy thickness limiter (1) comprises a vertical moving device, a positioning rod (14) for positioning the vertical moving device on a tibia fixing plate (26) and a pen needle (12) for feeding back the thickness of the tibia to be sawed to a tibia osteotomy guide plate (2), wherein the pen needle (12) is L-shaped, the end part of the horizontal end of the pen needle (12) is arranged at the action end of the vertical moving device, the end part of the vertical end of the pen needle (12) is contacted with the highest end or the lowest end surface of the bone surface of the platform on the inner side and the outer side of the tibia,
the vertical moving device comprises an adjusting cylinder (15) with an opening at the upper end and a hollow middle part, an adjusting screw (11) capable of rotating around an axle center is coaxially arranged in the adjusting cylinder (15), a guide groove which is axially arranged on the side wall of the adjusting cylinder (15) and communicated with the inside of the adjusting cylinder (15) is formed in the side wall of the adjusting cylinder (15), a sliding block is arranged at the position of the guide groove in the adjusting cylinder (15), the sliding block is screwed on the adjusting screw (11), the pen needle (12) is fixed on the sliding block and is linked with the sliding block, and the adjusting screw (11) and the sliding block form a screw rod driving mechanism; the adjusting cylinder (15) is provided with thickness scales (13) for displaying the up-and-down moving distance of the pen needle (12) along the guide groove,
the positioning rod (14) is arranged at the bottom of the vertical moving device, the positioning rod (14) is L-shaped, the end part of the vertical end of the positioning rod (14) is movably arranged at the bottom of the adjusting cylinder (15), so that the positioning rod (14) can rotate by taking the central shaft of the adjusting cylinder (15) as the center, the end part of the horizontal end of the positioning rod (14) is matched with the positioning round hole (24), the positioning rod (14) is inserted into the positioning round hole (24), and the positioning rod (14) can rotate in the positioning round hole (24);
during the operating condition, with taking pointer connecting rod (3) to be connected with embracing ankle ware connecting rod (4), will embracing ankle ware connecting rod (4) and connect on embracing ankle ware (5), embracing ankle ware (5) and fix on the ankle joint, confirm ankle joint center through embracing ankle ware connecting rod (4) and take pointer connecting rod (3) to confirm the mechanical axis of shin, adjust the shin and cut bone thickness limiter (1) of bone baffle both sides, adjust pen needle (12) to the settlement position according to thickness scale (13), then the tip of two pen needles (12) respectively with the highest position and the minimum position contact of the inside and outside platform bone face of shin, make the height of locating lever (14) tip on two cut bone thickness limiter (1) change, shin fixed plate (26) are rotatory on taking pointer connecting rod (3) according to the angle of cutting bone thickness limiter (1), simultaneously take pointer end (31) of pointer (3) to show inside and outside angle of turning over, after determining that the angle is correct, screw rod (32) is cut bone with the fixed with shin bone baffle (2).
2. The proximal tibial osteotomy device of claim 1, wherein: the vertical moving device is a screw rod driving mechanism.
3. The proximal tibial osteotomy device of claim 1, wherein: and nuts convenient for hand screwing are arranged on the pressurizing screw and the adjusting screw.
4. The proximal tibial osteotomy device of claim 1, wherein: the connecting plate (25) is provided with an angle scale (23) for displaying the rotation angle of the connecting rod (3) with the pointer, and the position of the angle scale (23) is matched with the position of the pointer end (31) of the connecting rod (3) with the pointer.
5. The proximal tibial osteotomy device of claim 1, wherein: the vertical end of the pen needle (12) faces the tibia surface to be a plane convenient to position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098732.1A CN109700498B (en) | 2019-01-31 | 2019-01-31 | Tibia proximal osteotomy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098732.1A CN109700498B (en) | 2019-01-31 | 2019-01-31 | Tibia proximal osteotomy device |
Publications (2)
| Publication Number | Publication Date |
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| CN109700498A CN109700498A (en) | 2019-05-03 |
| CN109700498B true CN109700498B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910098732.1A Active CN109700498B (en) | 2019-01-31 | 2019-01-31 | Tibia proximal osteotomy device |
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| CN (1) | CN109700498B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151253A (en) * | 2019-05-24 | 2019-08-23 | 西安市红会医院 | Osteotomy guide plate |
| CN113520518B (en) * | 2020-04-21 | 2023-09-05 | 孙晓明 | Tibia high-position guiding osteotomy orthopedic internal fixing device |
| CN113576596A (en) * | 2020-04-30 | 2021-11-02 | 上海市杨浦区中心医院(同济大学附属杨浦医院) | Lateral unicondylar tibial osteotomy device |
| CN111714184B (en) * | 2020-06-29 | 2021-09-07 | 中国人民解放军总医院 | A cut bone double guide plate system for high-order osteotomy of shin bone |
| CN111956296A (en) * | 2020-07-10 | 2020-11-20 | 嘉思特华剑医疗器材(天津)有限公司 | Internal and external ankle positioning module for tibial high-position osteotomy surgical guide plate |
| CN112155651A (en) * | 2020-09-25 | 2021-01-01 | 北京市春立正达医疗器械股份有限公司 | Tibia osteotomy measurer |
| CN112386301B (en) * | 2020-11-30 | 2022-10-28 | 陈勋 | Tibia transverse bone moving and cutting device |
| CN112545494B (en) * | 2020-12-07 | 2024-06-07 | 中国人民解放军联勤保障部队第九二〇医院 | Tibia rotation angle clinical indirect measurer |
| CN113367765B (en) * | 2021-05-29 | 2022-07-12 | 北京力达康科技有限公司 | Auxiliary osteotomy device for proximal tibia |
| CN113995466B (en) * | 2021-10-28 | 2023-05-12 | 北京长木谷医疗科技有限公司 | Tibia osteotomy device and tibia osteotomy guide plate assembly |
| CN117770906B (en) * | 2024-02-23 | 2024-05-28 | 爱乔（上海）医疗科技有限公司 | Guide, inclination angle measurement and osteotomy positioning system |
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