CN116570407A - Knee joint balance force measuring device - Google Patents
Knee joint balance force measuring device Download PDFInfo
- Publication number
- CN116570407A CN116570407A CN202310665365.5A CN202310665365A CN116570407A CN 116570407 A CN116570407 A CN 116570407A CN 202310665365 A CN202310665365 A CN 202310665365A CN 116570407 A CN116570407 A CN 116570407A
- Authority
- CN
- China
- Prior art keywords
- balance force
- knee joint
- measuring device
- force measuring
- upper shell
- Prior art date
- 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.)
- Pending
Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 5
- 210000002303 tibia Anatomy 0.000 claims description 5
- 210000000689 upper leg Anatomy 0.000 claims description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 230000002180 anti-stress Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 12
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 abstract description 5
- 210000003127 knee Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3877—Patellae or trochleae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
- A61F2002/4666—Measuring instruments used for implanting artificial joints for measuring force, pressure or mechanical tension
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The application relates to the field of medical equipment, in particular to a knee joint balance force measuring device. According to the knee joint balance force measuring device, the balance force detecting gasket is fixed at the position between the platform support and the test condyle through the cooperation of the test condyle, the platform support, the upper shell, the lower shell, the detection circuit board, the battery, the strain gauge sensing assembly and the like, the test condyle reciprocates along the arc-shaped surface of the upper shell of the balance force detecting gasket, the knee joint is simulated to move, the platform support fixed at the lower end synchronously swings with the balance force detecting gasket, the test condyle can generate variable stress with different directions on the arc-shaped surface of the balance force detecting gasket through continuous reciprocating movement, and the test condyle corrects a diseased bone through measuring multiple groups of data within 0-90 degrees, so that the requirements of high strain sensitivity coefficient and high precision are met, and the knee joint balance force measuring device has the advantages of high measuring speed, high dynamic measurement, strong adaptability and small error.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a knee joint balance force measuring device.
Background
In knee replacement surgery, it is often necessary to use an electronic shim to correct the balance forces between the femur and tibia.
At present, the traditional pressure sensor has low precision, poor stability, large volume, low adaptability to environments such as high temperature, dust, humidity, electromagnetic interference and the like, the thin film pressure sensor has good, but the defects are relatively obvious due to the fact that the technology and the process are not mature, for the alloy thin film pressure sensor, the precision is high, the anti-interference capability is high, the temperature characteristic is good, the strain sensitivity coefficient is low, the cost is high, and the semiconductor material thin film pressure sensor has high strain sensitivity coefficient and low cost, but the temperature characteristic is poor, so that the precision requirement of knee joint replacement operation cannot be met. In the knee joint replacement operation process, when the balance force between the trial condyle and the electronic gasket is often measured, the electronic gasket is needed, and is a disposable product, so that the characteristics of high strain sensitivity coefficient, high precision, high measurement speed, dynamic measurement, strong adaptability and small error are not only needed, but also the characteristics of high cost are needed. If the accuracy of the measurement of the balance force is insufficient in the knee joint replacement operation process, the measurement is easily subject to environmental changes, even if a group of data of the balance force is obtained, the data is biased, and the measurement needs to be carried out for a plurality of times, so that the times and time of the measurement are increased, and whether the data obtained after the plurality of times of the measurement are accurate or not cannot be ensured; meanwhile, the workload is increased for the user, the time risk is increased for the patient, in this case, the diseased bone is corrected for the patient, the service life of the diseased bone is greatly reduced, and the damage risk of the knee joint is brought for the patient. Therefore, a new device for detecting the balance force needs to be designed.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides a knee joint balance force measuring device.
The technical scheme adopted by the application is as follows: the knee joint balance force measuring device comprises a test condyle, a balance force detecting gasket and a platform support, wherein the balance force detecting gasket comprises an upper shell, a lower shell and a detecting circuit board arranged between the upper shell and the lower shell, and is matched with a corresponding battery, and the detecting circuit board is connected with a strain gauge sensing assembly; the test condyle is matched with the upper surface of the upper shell, the lower surface of the upper shell is matched with the strain gauge sensing assembly, and the lower shell is arranged on the platform support.
In order to better realize the application, a rotating column is arranged in the middle of the upper shell, and C-shaped cambered surfaces matched with the trial condyles are arranged on two sides of the upper shell; the middle part of the trial condyle is provided with a rotating groove for the rotating column to freely pass through, and the two sides of the trial condyle are provided with first fixing columns for being connected with the femur.
In order to better realize the application, the sensing piece assembly comprises a strain gauge, wherein the strain gauge is provided with a mounting hole and a pressure sensing sheet, and the pressure sensing sheet is connected with a detection circuit board; the lower shell is provided with a corresponding mounting seat and is matched with a connecting screw which is matched with the mounting hole; the lower surface of the upper shell is provided with a stress transmission guide post which is in contact fit with the pressure sensing sheet.
In order to better realize the application, the strain gauge is integrally shaped like a Chinese character 'Bu', three supporting parts are formed, and each supporting part is provided with a pressure sensing sheet.
In order to better realize the application, the number of the mounting holes is three, and the mounting holes are respectively close to one pressure sensing sheet from the center position of the shape of the Chinese character Bu.
In order to better realize the application, the upper part of the platform support is provided with a mounting groove matched with the lower shell, and the lower part is provided with a second fixing column used for being connected with the tibia.
In order to better realize the application, one side of the upper shell is provided with a holder groove.
In order to better realize the application, the detection circuit board is provided with a GPRS module and is matched with a corresponding SIM card.
In order to better realize the application, the battery is a lithium ion battery.
The beneficial effects of the application are as follows: according to the knee joint balance force measuring device, the balance force detecting gasket is fixed at the position between the platform support and the test condyle through the cooperation of the test condyle, the platform support, the upper shell, the lower shell, the detection circuit board, the battery, the strain gauge sensing assembly and the like, the test condyle reciprocates along the arc-shaped surface of the upper shell of the balance force detecting gasket, the knee joint is simulated to move, the platform support fixed at the lower end synchronously swings with the balance force detecting gasket, the test condyle can generate variable stress with different directions on the arc-shaped surface of the balance force detecting gasket through continuous reciprocating movement, and the test condyle corrects a diseased bone through measuring multiple groups of data within 0-90 degrees, so that the requirements of high strain sensitivity coefficient and high precision are met, and the knee joint balance force measuring device has the advantages of high measuring speed, high dynamic measurement, strong adaptability and small error.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is an exploded view of a knee balance force measuring device of the present application;
FIG. 2 is a schematic view of another orientation of FIG. 1;
FIG. 3 is a schematic view showing a structure of a knee joint balance force measuring apparatus according to the present application;
FIG. 4 is a schematic view of another orientation of the knee balancing force measuring apparatus of the present application;
FIG. 5 is a schematic view of a structure of an upper cover of an electronic spacer of the knee balance force measuring device of the present application;
FIG. 6 is a schematic view of a structure of an upper cover of an electronic spacer of the knee balance force measuring device of the present application;
FIG. 7 is a schematic view showing a structure of a lower cover of an electronic spacer of the knee balance force measuring apparatus of the present application;
FIG. 8 is a schematic view of a circuit board of an electronic pad of the knee balancing force measuring apparatus of the present application;
in the drawing, 1-first column, 2-second column, 3-thread, 4-thread, 5-thread, 6-thread, 7-thread, 8-thread, 9-thread, 10-thread, 11-thread, 12-thread, 13-thread, 14-thread, 15-thread.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.
Examples:
as shown in fig. 1 to 8, the knee joint balance force measuring device of the application comprises a test condyle 1, a balance force detecting pad and a platform support 2, wherein the balance force detecting pad comprises an upper shell 3, a lower shell 4 and a detecting circuit board 5 arranged between the upper shell 3 and the lower shell 4, and is matched with a corresponding battery, and the detecting circuit board 5 is connected with a strain gauge sensing assembly; the test condyle 1 is matched with the upper surface of the upper shell 3, the lower surface of the upper shell 3 is matched with the strain gauge sensing assembly, and the lower shell 4 is arranged on the platform support 2. According to the knee joint balance force measuring device, the balance force detecting gasket is fixed at the position between the platform support 2 and the test condyle 1 through the cooperation of the test condyle 1, the platform support 2, the upper shell 3, the lower shell 4, the detection circuit board 5, the battery, the strain gauge sensing assembly and the like, the test condyle 1 reciprocates along the arc-shaped surface of the upper shell 3 of the balance force detecting gasket to simulate knee joint movement, the platform support 2 fixed at the lower end swings synchronously with the balance force detecting gasket, the continuous reciprocating movement can enable the test condyle 1 to generate variable stress with different directions on the arc-shaped surface of the balance force detecting gasket, the diseased bone is corrected through measuring multiple groups of data within 0-90 degrees, high cost is not needed, the requirements of high strain sensitivity coefficient and high precision are met, and the knee joint balance force measuring device has the advantages of high measuring speed, high dynamic measuring capacity and small error.
Preferably, a rotating column 8 is arranged in the middle of the upper shell 3, and C-shaped cambered surfaces matched with the trial condyles 1 are arranged on two sides of the upper shell; the middle part of the trial condyle 1 is provided with a rotating groove 7 which enables the rotating column 8 to freely pass through, and two sides of the rotating groove are provided with first fixing columns 13 which are used for being connected with the femur. The cooperation of the rotating column 8 and the rotating groove 7 plays a limiting role on the test condyle 1, the platform support 2 fixed at the lower end swings synchronously with the balance force detection gasket, and the continuous reciprocating motion can enable the test condyle 1 to generate variable stress with different directions on the arc-shaped surface of the balance force detection gasket.
Preferably, the sensing piece assembly comprises a strain gauge 6, wherein a mounting hole 9 and a pressure sensing sheet 10 are arranged on the strain gauge 6, and the pressure sensing sheet 10 is connected with the detection circuit board 5; the lower shell 4 is provided with a corresponding mounting seat and is matched with a connecting screw 11, and the connecting screw 11 is matched with the mounting hole 9; a stress transmission column 12 in contact fit with the pressure sensing sheet 10 is arranged on the lower surface of the upper shell 3. When the test condyle 1 is matched with the C-shaped cambered surface of the balance force detection gasket, and reciprocates, the generated strain force is transmitted to the stress transmission guide post 12 through the upper shell 3, then is transmitted to the pressure sensing sheet 10 through the stress transmission guide post 12, and the pressure sensing sheet 10 converts the strain force into an electric signal and transmits the electric signal to the detection circuit board 5, so that the test condyle has the advantages of high measurement speed, high measurement accuracy, high dynamic measurement, high adaptability and small error.
Preferably, the strain gauge 6 is integrally formed in a shape of a Bu, and three support portions are formed, and each support portion is provided with a pressure sensing sheet 10. Further preferably, the number of the mounting holes 9 is three, and the mounting holes are respectively close to one pressure sensing sheet 10 from the center of the shape of the Chinese character 'Bu'.
Preferably, the upper part of the platform support 2 is provided with a mounting groove matched with the lower shell 4, and the lower part is provided with a second fixing column 14 used for being connected with the tibia, so that the connection with the tibia can be facilitated.
Preferably, a holder groove 15 is provided on one side of the upper housing 3. The design of the holder groove 15 can enable the taking and placing of the balance force detection gasket to be more convenient and quick.
Preferably, the detection circuit board 5 is provided with a GPRS module and is matched with a corresponding SIM card, so that the detection result can be conveniently transmitted in a wireless manner, and the method is flexible and convenient.
Preferably, the battery is a lithium ion battery, has the characteristic of large electric quantity per unit volume, and can be miniaturized conveniently while maintaining the cruising ability.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description.
Claims (9)
1. Knee joint balancing force measuring device, its characterized in that: the anti-stress test device comprises a test condyle (1), a balance force detection gasket and a platform support (2), wherein the balance force detection gasket comprises an upper shell (3), a lower shell (4) and a detection circuit board (5) arranged between the upper shell (3) and the lower shell (4), and is matched with a corresponding battery, and the detection circuit board (5) is connected with a strain gauge sensing assembly; the test condyle (1) is matched with the upper surface of the upper shell (3), the lower surface of the upper shell (3) is matched with the strain gauge sensing assembly, and the lower shell (4) is arranged on the platform support (2).
2. The knee joint balance force measuring device according to claim 1, wherein: a rotating column (8) is arranged in the middle of the upper shell (3), and C-shaped cambered surfaces matched with the trial condyles (1) are arranged on two sides of the upper shell; the middle part of the trial condyle (1) is provided with a rotating groove (7) which enables the rotating column (8) to freely pass through, and two sides of the rotating groove are provided with first fixing columns (13) which are used for being connected with the femur.
3. The knee joint balance force measuring device according to claim 2, wherein: the sensing piece assembly comprises a strain gauge (6), wherein a mounting hole (9) and a pressure sensing sheet (10) are arranged on the strain gauge (6), and the pressure sensing sheet (10) is connected with the detection circuit board (5); the lower shell (4) is provided with a corresponding mounting seat and is matched with a connecting screw (11), and the connecting screw (11) is matched with the mounting hole (9); the lower surface of the upper shell (3) is provided with a stress transmission column (12) in contact fit with the pressure sensing sheet (10).
4. A knee joint balance force measuring device according to claim 3, wherein: the strain gauge (6) is integrally shaped like a Chinese character 'Bu', three supporting parts are formed, and each supporting part is provided with a pressure sensing sheet (10).
5. The knee joint balance force measuring device of claim 4, wherein: the number of the mounting holes (9) is three, and the mounting holes are respectively close to one pressure sensing sheet (10) from the center of the shape of the Chinese character Bu.
6. The knee joint balance force measuring device according to claim 1, wherein: the upper part of the platform support (2) is provided with a mounting groove matched with the lower shell (4), and the lower part is provided with a second fixing column (14) used for being connected with the tibia.
7. The knee joint balance force measuring device according to claim 1, wherein: one side of the upper shell (3) is provided with a holder groove (15).
8. The knee joint balance force measuring device according to claim 1, wherein: the detection circuit board (5) is provided with a GPRS module and is matched with a corresponding SIM card.
9. The knee joint balance force measuring device according to claim 1, wherein: the battery is a lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310665365.5A CN116570407A (en) | 2023-06-06 | 2023-06-06 | Knee joint balance force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310665365.5A CN116570407A (en) | 2023-06-06 | 2023-06-06 | Knee joint balance force measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116570407A true CN116570407A (en) | 2023-08-11 |
Family
ID=87537801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310665365.5A Pending CN116570407A (en) | 2023-06-06 | 2023-06-06 | Knee joint balance force measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116570407A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117297611A (en) * | 2023-09-27 | 2023-12-29 | 上海逸动医学科技有限公司 | Auxiliary device for knee joint pressure measurement |
-
2023
- 2023-06-06 CN CN202310665365.5A patent/CN116570407A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117297611A (en) * | 2023-09-27 | 2023-12-29 | 上海逸动医学科技有限公司 | Auxiliary device for knee joint pressure measurement |
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