CN116492004A - Multifunctional knee joint and femur four-in-one osteotomy device - Google Patents

Multifunctional knee joint and femur four-in-one osteotomy device Download PDF

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Publication number
CN116492004A
CN116492004A CN202310323975.7A CN202310323975A CN116492004A CN 116492004 A CN116492004 A CN 116492004A CN 202310323975 A CN202310323975 A CN 202310323975A CN 116492004 A CN116492004 A CN 116492004A
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China
Prior art keywords
eccentric
hole
osteotomy
condyle
femur
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Pending
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CN202310323975.7A
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Chinese (zh)
Inventor
史文玲
丁振勋
王帅
吕昌禹
李金鑫
李鹏
贺阳
李航
赵永壮
祁宇杰
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Beijing Chunlizhengda Medical Instruments Co Ltd
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Beijing Chunlizhengda Medical Instruments Co Ltd
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Application filed by Beijing Chunlizhengda Medical Instruments Co Ltd filed Critical Beijing Chunlizhengda Medical Instruments Co Ltd
Priority to CN202310323975.7A priority Critical patent/CN116492004A/en
Publication of CN116492004A publication Critical patent/CN116492004A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1657—Bone breaking devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to the field of medical equipment, in particular to a multifunctional knee joint and femur four-in-one osteotomy device. The osteotomy device comprises a four-in-one osteotomy plate, a guide, an eccentric measurer, a locking nail and an anterior condyle access plate; the four-in-one osteotomy plate is provided with a locking hole and a threaded hole, the axial line direction of the locking hole is perpendicular to the axial line direction of the threaded hole, and the threaded hole penetrates into the locking hole; the guide device is arranged in the locking hole, and a limit groove is formed in the guide device; the guide device is inserted into the locking hole, and the locking pin is in threaded connection with the threaded hole and is inserted into the limit groove; the eccentric measurer is rotatably connected with the guider, and a first scale is arranged in the circumferential direction of the guider; an eccentric measuring hole is arranged in the eccentric measurer; the four-in-one bone cutting plate is provided with a clamping groove, the front condyle access plate is provided with a clamping table, and the front condyle access plate is provided with a second scale. Therefore, the problems that the osteotomy device in the prior art has single function and limited application range, and the osteotomy precision is difficult to ensure are solved.

Description

Multifunctional knee joint and femur four-in-one osteotomy device
Technical Field
The invention belongs to the technical field of medical appliances, and relates to a multifunctional knee joint and femur four-in-one osteotomy device.
Background
In recent years, artificial knee replacements have rapidly evolved and matured, and more patients have been selecting artificial knee replacements. Knee joint replacement is one of the common operation modes for clinically treating diseases such as knee osteoarthritis, traumatic arthritis and rheumatoid diseases at present, and has good postoperative effect.
When the osteotomy instrument in the prior art is used, the osteotomy instrument needs to be repositioned step by step, errors can be caused in positioning, and the osteotomy of the femur of the knee joint is inaccurate, so that the femoral condyle prosthesis is excessively tightly or even not installed, or the femoral condyle prosthesis is excessively loose. The current latest instrument, namely the knee joint four-in-one osteotomy device, can play a role in the knee joint operation of four-side osteotomies of the front condyle, the rear condyle, the front inclined plane and the rear inclined plane of the knee joint femur, but has a plurality of defects in the practical use, which cause the operation of the knee joint operation to not achieve the expected result and the optimal use effect, and the defects can be summarized as follows:
1. the four-in-one osteotomy device is required to correspond to the specifications of the femoral condyle prosthesis, so that the requirements for configuration are more, the size is large, the quality is large, the hand feeling is poor during use, and the application range is extremely limited.
2. The thickness of the four-in-one osteotomy device is affected, and when an operator performs a pendulum saw operation in an operation, osteotomy errors are easy to generate due to operation variability, so that the femur osteotomy of the knee joint is inaccurate.
3. When the four-in-one osteotomy device is installed, the positioning is needed to be performed by referring to the osseous marker, and when the osseous marker is not easy to identify, the positioning can be influenced, so that deviation occurs in osteotomy, and the operation effect is influenced.
Based on the above reasons, aiming at the problems that the osteotomy device has single function and limited application range and is difficult to ensure the osteotomy precision, a more reasonable technical scheme is also required to be provided to solve the current technical problem.
Disclosure of Invention
The invention aims to provide a multifunctional knee joint and femur four-in-one osteotomy device, which aims to solve the problems that the osteotomy device in the prior art has single function and limited application range, and the osteotomy precision is difficult to ensure.
In order to achieve the above purpose, the invention provides a multifunctional knee joint femur four-in-one osteotomy device, which comprises a four-in-one osteotomy plate for osteotomy of a knee joint femur, and further comprises a guider, an eccentric measurer, a locking nail and an anterior condyle strap; the four-in-one osteotomy plate is provided with a locking hole matched with the guide and a threaded hole matched with the locking nail, the axial line direction of the locking hole is perpendicular to the axial line direction of the threaded hole, and the threaded hole penetrates into the locking hole;
the guide device is arranged in the locking hole, and a limiting groove is formed in the guide device; the guide device is inserted into the locking hole, and the locking pin is in threaded connection with the threaded hole and is inserted into the limiting groove so as to keep the position of the guide device relative to the osteotomy plate;
the eccentric measurer is rotatably connected to the guide, a first scale is arranged in the circumferential direction of the guide, and the eccentric measurer is used for measuring the eccentric angle of the medullary cavity; the eccentric measurer is also provided with an eccentric measuring hole for inserting a intramedullary nail;
the four-in-one bone cutting plate is provided with a clamping groove, the front condyle access plate is provided with a clamping table matched with the clamping groove, the front condyle access plate extends along the axial lead direction of the locking hole, and the front condyle access plate is provided with a second scale for measuring the distance from the front condyle of the femoral condyle to the far end of the femoral condyle.
In one possible design, the anterior condyle access plate comprises a U-shaped anterior condyle access plate, and the ends of the U-shaped anterior condyle access plate are respectively provided with the clamping tables; two clamping grooves which are in one-to-one correspondence with the clamping tables are formed in the four-in-one osteotomy plate; the clamping table is T-shaped, and the clamping groove is of an inverted T-shaped structure matched with the clamping table.
In one possible design, the eccentric measurer is provided with a first eccentric hole extending along a first direction and a second eccentric hole extending along a second direction, the apertures of the first eccentric hole and the second eccentric hole are the same, and the first eccentric hole and the second eccentric hole are partially overlapped to form an eccentric measuring hole together, wherein the axial lead of the first eccentric hole is D with respect to the axial lead of the second eccentric hole, and the dimension of D is gradually reduced along the direction pointing to the medullary cavity.
In one possible design, the maximum distance between the axis of the first eccentric hole and the axis of the second eccentric hole is 6mm, and the minimum distance between the axis of the first eccentric hole and the axis of the second eccentric hole is 1mm, and 1mm is less than or equal to D and less than or equal to 6mm.
In one possible design, the side wall of the central hole of the guide is provided with a limit shaft, the eccentric measurer is provided with an annular groove matched with the limit shaft, and the limit shaft is inserted into the annular groove to limit the degree of freedom of the eccentric measurer.
In one possible embodiment, the limiting shafts are arranged in two and symmetrically.
In one possible design, the guide is provided with a positioning table, the four-in-one osteotomy plate is provided with a positioning groove matched with the positioning table, and the positioning table is embedded in the positioning groove.
In one possible design, the four-in-one osteotomy plate, guide, eccentric measurer, locking pin, and anterior condylar access plate are all medical stainless steel materials.
When the osteotomy device is used, the four-in-one osteotomy plate can be fixed on the osteotomy surface of the far end of the femur of the knee joint, then osteotomy of the front condyle, the back inclined plane and the front inclined plane of the femur is carried out, then the guide device is installed on the four-in-one osteotomy plate, the locking nail is used for fixing, the eccentric measurer is adjusted according to the shape of the femoral marrow cavity of a patient, the eccentric angle and the eccentric distance of the femoral marrow cavity of the patient are measured, and finally the front condyle access plate is assembled, so that the distance from the front condyle of the femur to the far end of the femoral condyle is intuitively measured.
Through the technical scheme, four-side osteotomies can be performed on the front condyle, the rear condyle, the front inclined plane and the rear inclined plane of the femur of the knee joint by using the osteotomies device, and the operation time can be shortened. The design of the anterior condyle strap can measure the distance from the anterior condyle osteotomy to the distal end surface of the femoral condyle, and provide more visual and accurate osteotomy for doctors, so that the joint can be better adapted to the prosthesis, and the post-operation recovery effect is guaranteed. The eccentric measurer can effectively measure the eccentric angle and the eccentric distance of the femoral medullary cavity, can accurately measure the eccentric angle and the eccentric distance according to different femoral medullary cavity forms of different patients, provides a basis for the installation of the knee joint femoral extension stem prosthesis, and ensures the operation effect. Based on the detachable design of the whole body, the front condyle access plate can be detached when the bone is cut, so that the whole weight is reduced, the operation is convenient to take and use, and the use hand feeling of an operator in the operation is improved. Besides the four-side osteotomy of the knee joint femur, the multi-thickness osteotomy of the back condyle can be performed on a patient with larger damage to the back condyle of the knee joint, so that the cushion block prosthesis of the back condyle of the knee joint can be installed, and the stability of the installation of the prosthesis can be guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic top view of a multi-functional knee femoral four-in-one osteotomy device in one embodiment of the present invention;
FIG. 2 is a schematic view of the structure taken along the direction A-A in FIG. 1;
FIG. 3 is a schematic view of the structure taken along the direction B-B in FIG. 1;
FIG. 4 is a schematic view of the structure taken along the direction C-C in FIG. 1;
fig. 5 is a schematic perspective view of a multifunctional knee joint and femur four-in-one osteotomy device according to an embodiment of the present invention.
In the above figures: the bone cutting device comprises a 1-four-in-one bone cutting plate, a 2-guider, a 3-eccentric measurer, 301-a first eccentric hole, 302-a second eccentric hole, 4-locking nails, 5-an anterior condyle access plate, 6-a limiting shaft and 7-an annular groove.
Detailed Description
The invention will be further elucidated with reference to the drawings and to specific embodiments. The present invention is not limited to these examples, although they are described in order to assist understanding of the present invention. Specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the present invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
According to the specific embodiment of the disclosure, a multifunctional knee joint femur four-in-one osteotomy device is provided, which comprises a four-in-one osteotomy plate 1 for osteotomy of a knee joint femur, wherein the four-in-one osteotomy plate 1 is in the prior art, and can be used for four-side osteotomy of an anterior condyle, a posterior condyle, an anterior inclined plane and a posterior inclined plane of the knee joint femur, and after the four-side osteotomy is completed, whether the femoral posterior condyle osteotomy is needed or not can be judged according to the abrasion condition of the posterior condyle of the knee joint femur of a patient, and if the femoral posterior condyle osteotomy is needed, the posterior condyle osteotomy can be directly performed so as to facilitate the use and installation of a subsequent femoral posterior condyle cushion block prosthesis; when the osteotomy device is used, the osteotomy device can be matched with a femoral bone marrow needle for use. After the intramedullary nail is inserted into the intramedullary cavity, for example, bending occurs at a bending point or the distal end of the intramedullary nail is deformed due to the pressure of the intramedullary cavity after the intramedullary nail is inserted, the bone condition can be judged according to the insertion condition, and the method is beneficial to providing a basis for the installation of the knee joint femur extension stem prosthesis. Wherein fig. 1-5 illustrate one embodiment.
Referring to fig. 1 to 5, the multifunctional knee joint and femur four-in-one osteotomy device comprises a guide 2, an eccentric measurer 3, a locking nail 4 and an anterior condyle strap 5; the four-in-one osteotomy plate 1 is provided with a locking hole matched with the guide device 2 and a threaded hole matched with the locking nail 4, the axial lead direction of the locking hole is perpendicular to the axial lead direction of the threaded hole, and the threaded hole penetrates into the locking hole.
The guide device 2 is arranged in the locking hole, and a limit groove is formed in the guide device 2; the guide 2 is inserted into the locking hole, and the locking nail 4 is screwed into the threaded hole and inserted into the limit groove, so as to maintain the position of the guide 2 relative to the osteotomy plate.
The eccentric measurer is rotatably connected to the guide 2, a first scale is arranged in the circumferential direction of the guide 2, and the eccentric measurer is used for measuring the eccentric angle of the medullary cavity; and an eccentric measuring hole for inserting the intramedullary nail is also formed in the eccentric measurer.
The four-in-one osteotomy plate 1 is provided with a clamping groove, the front condyle access plate 5 is provided with a clamping table matched with the clamping groove, the front condyle access plate 5 extends along the axial line direction of the locking hole, and the front condyle access plate 5 is provided with a second scale for measuring the distance from the front condyle of the femoral condyle to the far end of the femoral condyle.
When the osteotomy device is used, the four-in-one osteotomy plate 1 can be fixed on the osteotomy surface of the distal end of the femur of the knee joint, then osteotomy of the anterior condyle, the posterior slope and the anterior slope of the femur is carried out, then the guide 2 is installed on the four-in-one osteotomy plate 1, then the four-in-one osteotomy plate is fixed by the locking nail 4, the eccentric measurer is regulated according to the bone marrow cavity shape of the femur of a patient, the eccentric angle and the eccentric distance of the bone marrow cavity of the patient are measured, and finally the anterior condyle strap 5 is assembled, so that the distance from the anterior condyle of the femur to the distal end of the condyle of the femur is intuitively measured.
Through the technical scheme, four-side osteotomies can be performed on the front condyle, the rear condyle, the front inclined plane and the rear inclined plane of the femur of the knee joint by using the osteotomies device, and the operation time can be shortened. The design of the anterior condyle access plate 5 can measure the distance from the anterior condyle osteotomy to the distal surface of the femoral condyle, and provides more visual and accurate osteotomy for doctors, so that the joint can be better adapted to the prosthesis, and the post-operation recovery effect is guaranteed. The eccentric measurer can effectively measure the eccentric angle and the eccentric distance of the femoral medullary cavity, can accurately measure the eccentric angle and the eccentric distance according to different femoral medullary cavity forms of different patients, provides a basis for the installation of the knee joint femoral extension stem prosthesis, and ensures the operation effect. Based on the detachable design of the whole body, the front condyle access plate 5 can be detached during osteotomy, so that the whole weight is reduced, the operation is convenient to take and use, and the use hand feeling of an operator in the operation is improved. Besides the four-side osteotomy of the knee joint femur, the multi-thickness osteotomy of the back condyle can be performed on a patient with larger damage to the back condyle of the knee joint, so that the cushion block prosthesis of the back condyle of the knee joint can be installed, and the stability of the installation of the prosthesis can be guaranteed.
It should be noted that the ordinal words "first" and "second" are intended to distinguish one technical feature from another technical feature, and have no sequence or importance.
In one embodiment, referring to fig. 3 and 5, the anterior condyle access plate 5 includes a U-shaped anterior condyle access plate 5, and the ends of the U-shaped anterior condyle access plate 5 are respectively provided with the clamping tables; the four-in-one osteotomy plate 1 is provided with two clamping grooves corresponding to the clamping tables one by one, so that the clamping tables can be rapidly and reliably clamped in the clamping grooves, and the positions of the anterior condyle lap plates 5 are limited.
Specifically, referring to fig. 1, the clamping platform is in a T shape, and the clamping groove is in an inverted T-shaped structure adapted to the clamping platform, so that the degree of freedom of the anterior condyle access board 5 can be limited, the anterior condyle access board 5 cannot shake along two sides, but can only move along the extending direction of the clamping groove, which is beneficial to ensuring the positioning accuracy of the anterior condyle access board 5, further indirectly ensuring the bone cutting amount, and helping the subsequent artificial knee joint replacement operation to be smoothly carried out.
In the disclosure, referring to fig. 3 and 4, the eccentric measurer is provided with a first eccentric hole 301 extending along a first direction and a second eccentric hole 302 extending along a second direction, the apertures of the first eccentric hole 301 and the second eccentric hole 302 are the same, and the first eccentric hole 301 and the second eccentric hole 302 are partially overlapped to form an eccentric measuring hole together, wherein the axial lead of the first eccentric hole 301 is D with respect to the axial lead of the second eccentric hole 302, and the dimension of D is gradually reduced along the direction pointing to the medullary cavity.
Specifically, the maximum distance between the axis of the first eccentric hole 301 and the axis of the second eccentric hole 302 is 6mm, and the minimum distance between the axis of the first eccentric hole 301 and the axis of the second eccentric hole 302 is 1mm, and 1mm is less than or equal to D and less than or equal to 6mm. In this connection, the person skilled in the art can flexibly arrange them according to the actual requirements.
In one embodiment provided by the present disclosure, the side wall of the central hole of the guide 2 is provided with a limiting shaft 6, the eccentric measurer is provided with an annular groove 7 adapted to the limiting shaft 6, and the limiting shaft 6 is inserted into the annular groove 7 to limit the degree of freedom of the eccentric measurer, so that the eccentric measurer rotates smoothly, the accuracy of the measurement result of the eccentric angle is guaranteed, and effective reference data is provided for the installation of the knee joint femur extension stem prosthesis.
Specifically, the limiting shafts 6 are provided in two and symmetrically disposed. The eccentric measurer is beneficial to ensuring the limiting effect on the eccentric measurer, so that the eccentric measurer can stably rotate around the rotation center of the eccentric measurer when rotating.
In a preferred embodiment, the guide 2 is provided with a positioning table, the four-in-one osteotomy plate 1 is provided with a positioning groove matched with the positioning table, and the positioning table is embedded in the positioning groove, so that the eccentric measurer 3 can be quickly positioned to the corresponding position of the guide 2, and the locking nail 4 can be accurately inserted into the locking hole. Specifically, in the present disclosure, the positioning table is integrally formed with the guide 2.
In the present disclosure, the four-in-one osteotomy plate 1, the guide 2, the eccentric measurer 3, the locking nail 4 and the anterior condyle access plate 5 are all made of medical stainless steel materials. The osteotomy device manufactured by the method has better corrosion resistance, better strength and benefit for ensuring the use effect and the service life. Since the medical stainless steel material is an existing material, it will not be described here too much.
Finally, it should be noted that the invention is not limited to the alternative embodiments described above, but can be used by anyone in various other forms of products in the light of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.

Claims (8)

1. The multifunctional knee joint and femur four-in-one osteotomy device comprises a four-in-one osteotomy plate (1) for osteotomy of a knee joint femur, and is characterized by further comprising a guide (2), an eccentric measurer (3), a locking nail (4) and an anterior condyle strap (5); the four-in-one osteotomy plate (1) is provided with a locking hole matched with the guide device (2) and a threaded hole matched with the locking nail (4), the axial line direction of the locking hole is perpendicular to the axial line direction of the threaded hole, and the threaded hole penetrates into the locking hole;
the guide device (2) is arranged in the locking hole, and a limit groove is formed in the guide device (2); the guide device (2) is inserted into the locking hole, and the locking nail (4) is in threaded connection with the threaded hole and is inserted into the limiting groove so as to keep the position of the guide device (2) relative to the bone cutting plate;
the eccentric measurer is rotatably connected to the guide (2), a first scale is arranged in the circumferential direction of the guide (2), and the eccentric measurer is used for measuring the eccentric angle of the medullary cavity; the eccentric measurer is also provided with an eccentric measuring hole for inserting a intramedullary nail;
the four-in-one osteotomy plate (1) is provided with a clamping groove, the front condyle access plate (5) is provided with a clamping table matched with the clamping groove, the front condyle access plate (5) extends along the axial line direction of the locking hole, and the front condyle access plate (5) is provided with a second scale for measuring the distance from the front condyle of the femoral condyle to the far end of the femoral condyle.
2. The multifunctional knee joint and femur four-in-one osteotomy device as in claim 1, wherein the anterior condylar access plate (5) comprises a U-shape, and the clamping tables are respectively arranged at the ends of the U-shaped anterior condylar access plate (5); two clamping grooves which are in one-to-one correspondence with the clamping tables are formed in the four-in-one osteotomy plate (1); the clamping table is T-shaped, and the clamping groove is of an inverted T-shaped structure matched with the clamping table.
3. The multi-functional knee joint and femur four-in-one osteotomy device as in claim 1, wherein the eccentric measurer is provided with a first eccentric hole (301) extending in a first direction and a second eccentric hole (302) extending in a second direction, the first eccentric hole (301) and the second eccentric hole (302) have the same aperture, and the first eccentric hole (301) and the second eccentric hole (302) partially overlap to form an eccentric measurement hole together, wherein the axial lead of the first eccentric hole (301) is spaced apart from the axial lead of the second eccentric hole (302) by a distance D, and the dimension of D is gradually reduced in a direction pointing to the intramedullary canal.
4. A multi-functional knee joint and femur four-in-one osteotomy device as in claim 3, wherein the maximum distance between the axis of the first eccentric hole (301) and the axis of the second eccentric hole (302) is 6mm, and the minimum distance between the axis of the first eccentric hole (301) and the axis of the second eccentric hole (302) is 1mm, and 1mm is less than or equal to 6mm.
5. The multifunctional knee joint and femur four-in-one osteotomy device according to claim 1, wherein a limiting shaft (6) is provided on the side wall of the central hole of the guide (2), an annular groove (7) adapted to the limiting shaft (6) is provided on the eccentric measurer, and the limiting shaft (6) is inserted into the annular groove (7) for limiting the degree of freedom of the eccentric measurer.
6. The four-in-one osteotomy device of a multi-functional knee joint and femur as in claim 5, wherein the limiting shafts (6) are arranged in two and symmetrically.
7. The multifunctional knee joint and femur four-in-one osteotomy device of claim 1, wherein a positioning table is arranged on the guide (2), a positioning groove matched with the positioning table is arranged on the four-in-one osteotomy plate (1), and the positioning table is embedded in the positioning groove.
8. The multi-functional knee joint and femur four-in-one osteotomy device of claim 1, wherein the four-in-one osteotomy plate (1), the guide (2), the eccentric measurer (3), the locking pin (4) and the anterior condyle access plate (5) are all medical stainless steel materials.
CN202310323975.7A 2023-03-29 2023-03-29 Multifunctional knee joint and femur four-in-one osteotomy device Pending CN116492004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310323975.7A CN116492004A (en) 2023-03-29 2023-03-29 Multifunctional knee joint and femur four-in-one osteotomy device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310323975.7A CN116492004A (en) 2023-03-29 2023-03-29 Multifunctional knee joint and femur four-in-one osteotomy device

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Publication Number Publication Date
CN116492004A true CN116492004A (en) 2023-07-28

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