CN109009320B - Knee joint osteotomy angle measuring device - Google Patents
Knee joint osteotomy angle measuring device Download PDFInfo
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- CN109009320B CN109009320B CN201810899048.9A CN201810899048A CN109009320B CN 109009320 B CN109009320 B CN 109009320B CN 201810899048 A CN201810899048 A CN 201810899048A CN 109009320 B CN109009320 B CN 109009320B
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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
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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
- A61B17/1662—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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
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- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- Engineering & Computer Science (AREA)
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- Dentistry (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Pathology (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a knee joint osteotomy angle measuring device which comprises a bottom plate and a top plate, wherein the side edges of the bottom plate and the top plate are hinged, two groups of pressure sensors are arranged at the positions of the top plate corresponding to the femoral head of a knee joint, the knee joint osteotomy angle measuring device also comprises a lifting mechanism, the lifting mechanism is used for rotating and lifting the top plate along a hinged point, and the pressure sensors are array type pressure sensors. The invention can conveniently and quickly measure the osteotomy angle during knee joint replacement, improve the success rate of the operation and shorten the operation time.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a knee joint osteotomy angle measuring device.
Background
The knee joint is the multiaxial motion joint with the most complicated human anatomy, and with the coming of the aging of China's society, the number of patients with knee joint diseases is increasing. Currently, artificial knee joint replacement is a common clinical means for treating various advanced complex knee joint diseases, and has good effect. However, as the surgery is widely performed, the problems caused by the surgery are increasing. The incidence rate of patellofemoral joint complications after total knee replacement is reported to be 1.5% -12%, accounting for 50% of the causes of artificial knee revision, and becoming one of the most common causes of knee revision. The accurate rotating force line of the femoral prosthesis is reconstructed in the total knee replacement, and the method has important significance for improving the excellent rate of the operation and prolonging the service life of the prosthesis. Accurately determining the alignment of femoral rotation and correctly cutting bone, placing prosthesis becomes a key factor for the success of the operation. The balance of the flexion gap in the artificial joint replacement operation is of great significance to the normal life of a patient after the operation, for example, if the rotation force line of the femoral prosthesis is poor, the patient can cause the abnormity of joint kinematics and biomechanics when performing knee bending movement, which is one of the reasons of poor curative effect after the operation.
The knee joint is a complicated joint, and has many ligaments and musculature on the periphery in addition to the femoral head which moves relatively, and it is necessary to take into consideration the pressure exerted on the femoral head by the ligaments and musculature on the periphery when performing the knee joint replacement operation. The choice of the angle of the osteotomy is critical because it requires consideration that the pressure between the two opposing femoral heads be maintained consistent after installation of the prosthesis, which would otherwise result in increased wear of the prosthesis during use. At present, no surgical instrument specially used for measuring the osteotomy angle exists.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a knee joint osteotomy angle measuring device, which can conveniently and quickly measure the femur osteotomy angle, aiming at the defects of the background technology.
In order to solve the technical problems, the knee joint osteotomy angle measuring device provided by the invention comprises a bottom plate and a top plate, wherein the side edges of the bottom plate and the top plate are hinged, two groups of pressure sensors are arranged at the positions of the top plate corresponding to the femoral head of a knee joint, the knee joint osteotomy angle measuring device further comprises a lifting mechanism, the lifting mechanism is used for lifting the top plate in a rotating manner along a hinged point, and the pressure sensors are array pressure sensors.
In the technical scheme, the lifting mechanism is a lifting clamp, and the end part of the lifting clamp is inserted between the bottom plate and the top plate; and fixing grooves for inserting the end parts of the lifting mechanism are formed in the bottom plate and the top plate.
In the technical scheme, the lifting mechanism is provided with a rack mechanism for accurately controlling the lifting angle.
In the above technical solution, the lifting mechanism is fixedly provided with a reading mechanism for reading the lifting angle α of the bottom plate and the top plate.
In the above technical solution, the pressure sensor is composed of a plurality of pressure sensors distributed in a matrix.
In the technical scheme, the spacing distance of the pressure sensors is 0.4-8 mm, preferably 2-5 mm.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, two groups of pressure sensors are adopted to directly measure the pressure parameters of the opposite femoral heads during knee joint movement, and the lifting angle is the osteotomy angle by lifting the top plate when the pressures on the two sides are consistent, so that the method is very convenient and fast, and the osteotomy success rate of the knee joint replacement surgery is greatly ensured; meanwhile, the two groups of pressure sensors are array type pressure sensors, measurement errors can be effectively avoided through the array type pressure sensors, and more accurate measurement data are provided.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
fig. 2 is a schematic structural diagram of an array pressure sensor according to the present invention.
Detailed Description
Specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings:
the knee joint osteotomy angle measuring device comprises a bottom plate 1 and a top plate 2, wherein the side edges of the bottom plate 1 and the top plate 2 are hinged, two groups of pressure sensors 3 are arranged at the positions, corresponding to the femoral heads of the knee joint, of the top plate 2, and the knee joint osteotomy angle measuring device further comprises a lifting mechanism 4, and the lifting mechanism 4 is used for rotatably lifting the top plate 2 along a hinged point.
The lifting mechanism 4 may be a lifting clamp, the end of which is inserted between the bottom plate 1 and the top plate 2. And fixing grooves 6 for inserting the end parts of the lifting mechanisms 4 are respectively formed in the bottom plate 1 and the top plate 2. And a rack mechanism 5 for accurately controlling the lifting angle is arranged on the lifting mechanism 4. And a reading mechanism for reading the lifting angle alpha of the bottom plate 1 and the top plate 2 is also fixedly arranged on the lifting mechanism 4.
When the osteotomy is needed, the device is inserted into the knee joint to be osteotomy, so that the femoral head is positioned at the pressure sensor 3. Then the knee joint is moved, and the pressure sensor 3 can accurately measure the pressure parameters of the femoral heads on both sides. The top plate 2 is lifted by using the lifting mechanism 4 until the pressure sensors 3 measure that the pressure parameters of the bilateral femoral heads are consistent, and the lifting angle alpha of the bottom plate 1 and the top plate 2 at the moment can be obtained by the reading mechanism 5, wherein the angle is the osteotomy angle.
Two groups of pressure sensors 3 arranged at the corresponding positions of the bottom plate 1 and the femoral head of the knee joint are array type pressure sensors. The pressure sensor 3 may be composed of a plurality of pressure sensors 3a distributed in a matrix. The spacing distance of the pressure sensors is 0.4-8 mm, and preferably 2-5 mm.
The sensor is arranged to measure the osteotomy angle more accurately, and when the device is used, the device is inserted into the knee joint to be osteotomy, so that the femoral head is positioned at the pressure sensor 3. Then the knee joint is moved, at the moment, the pressure sensor 3 can accurately measure the pressure parameters of the knee joint at two sides when the knee joint is straightened, bent and moved through the pressure sensors 3a distributed in an array, and therefore more accurate osteotomy angle data can be obtained. The osteotomy is carried out according to the data, so that the abrasion caused by uneven stress of the prosthesis due to the angle deviation can be avoided, and the service life of the prosthesis and the comfort of a patient using the prosthesis can be greatly improved.
The core of the invention is to use two groups of array pressure sensors to obtain the osteotomy angle when the osteotomy is performed by the array pressure sensors, therefore, the protection scope of the invention is not limited to the above embodiments, and any change or deformation using the above mechanism based on the principle of the invention belongs to the protection scope of the invention.
Claims (6)
1. A knee joint osteotomy angle measuring device, includes bottom plate (1) and roof (2), its characterized in that: the side edges of the bottom plate (1) and the top plate (2) are hinged, two groups of pressure sensors (3) are arranged at the positions, corresponding to knee joint femoral heads, of the top plate (2), the knee joint osteotomy angle measuring device further comprises a lifting mechanism (4), the lifting mechanism (4) is used for lifting the top plate (2) in a rotating mode along a hinged point, and the pressure sensors (3) are array type pressure sensors; a reading mechanism for reading the lifting angle alpha of the top plate (2) relative to the bottom plate (1) is fixedly arranged on the lifting mechanism (4); when the bone needs to be cut, the device is inserted into the knee joint needing to be cut, the femoral head is located at the pressure sensor (3), then the knee joint is moved, the pressure sensor (3) can accurately measure the pressure parameters of the femoral heads on two sides, the top plate (2) is lifted by the lifting mechanism (4) until the pressure sensor (3) measures that the pressure parameters of the femoral heads on two sides are consistent, the lifting angle alpha of the top plate (2) relative to the bottom plate (1) at the moment can be obtained through the reading mechanism, and the angle is the bone cutting angle.
2. The knee osteotomy angle measuring device of claim 1, wherein: the lifting mechanism (4) is a lifting clamp, and the end part of the lifting clamp is inserted between the bottom plate (1) and the top plate (2); and fixing grooves (6) for inserting the end parts of the lifting mechanisms (4) are formed in the bottom plate (1) and the top plate (2).
3. The knee osteotomy angle measuring device of claim 2, wherein: and a rack mechanism (5) for accurately controlling the lifting angle is arranged on the lifting mechanism (4).
4. The knee osteotomy angle measuring device of any one of claims 1-3, wherein: the pressure sensor (3) is composed of a plurality of pressure sensors (3 a) distributed in a matrix.
5. The knee osteotomy angle measuring device of claim 4, wherein: the spacing distance of the pressure sensors (3 a) is 0.4-8 mm.
6. The knee osteotomy angle measuring device of claim 5, wherein: the spacing distance of the pressure sensors (3 a) is 2-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899048.9A CN109009320B (en) | 2018-08-08 | 2018-08-08 | Knee joint osteotomy angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899048.9A CN109009320B (en) | 2018-08-08 | 2018-08-08 | Knee joint osteotomy angle measuring device |
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| Publication Number | Publication Date |
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| CN109009320A CN109009320A (en) | 2018-12-18 |
| CN109009320B true CN109009320B (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810899048.9A Active CN109009320B (en) | 2018-08-08 | 2018-08-08 | Knee joint osteotomy angle measuring device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157221A (en) * | 2018-08-08 | 2019-01-08 | 武汉拓思瑞医疗科技有限公司 | Replacement knee in arthroplasty auxiliary device |
| CN109953782B (en) * | 2019-03-27 | 2020-10-09 | 北京航空航天大学 | Bone spreader for osteotomy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895017A (en) * | 2012-09-20 | 2013-01-30 | 杭州市余杭区第一人民医院 | Reset pliers for spreading and lifting lumbar vertebral bodies |
| CN203400134U (en) * | 2013-05-11 | 2014-01-22 | 清华大学深圳研究生院 | Measurement device measuring pressure between two force bodies and pressure change |
| CN206372138U (en) * | 2016-07-28 | 2017-08-04 | 上海市第十人民医院 | Femoral rotation osteotomy automatic backlash balancer in a kind of total knee arthroplasty |
| CN108309380A (en) * | 2018-03-22 | 2018-07-24 | 中国人民解放军总医院 | A kind of knee space dilator |
| CN109157221A (en) * | 2018-08-08 | 2019-01-08 | 武汉拓思瑞医疗科技有限公司 | Replacement knee in arthroplasty auxiliary device |
-
2018
- 2018-08-08 CN CN201810899048.9A patent/CN109009320B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895017A (en) * | 2012-09-20 | 2013-01-30 | 杭州市余杭区第一人民医院 | Reset pliers for spreading and lifting lumbar vertebral bodies |
| CN203400134U (en) * | 2013-05-11 | 2014-01-22 | 清华大学深圳研究生院 | Measurement device measuring pressure between two force bodies and pressure change |
| CN206372138U (en) * | 2016-07-28 | 2017-08-04 | 上海市第十人民医院 | Femoral rotation osteotomy automatic backlash balancer in a kind of total knee arthroplasty |
| CN108309380A (en) * | 2018-03-22 | 2018-07-24 | 中国人民解放军总医院 | A kind of knee space dilator |
| CN109157221A (en) * | 2018-08-08 | 2019-01-08 | 武汉拓思瑞医疗科技有限公司 | Replacement knee in arthroplasty auxiliary device |
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| CN109009320A (en) | 2018-12-18 |
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