CN112816236A - Knee joint biomechanics experiment platform and load applying structure - Google Patents
Knee joint biomechanics experiment platform and load applying structure Download PDFInfo
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- CN112816236A CN112816236A CN202110130494.5A CN202110130494A CN112816236A CN 112816236 A CN112816236 A CN 112816236A CN 202110130494 A CN202110130494 A CN 202110130494A CN 112816236 A CN112816236 A CN 112816236A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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Abstract
The invention discloses a knee joint biomechanics experiment platform and a load applying structure, which comprise: the sliding table comprises a first plate, a second plate and a third plate, wherein the second plate is arranged on the first plate in a sliding mode along a first direction, the third plate is arranged on the second plate in a sliding mode along a second direction, and the first direction and the second direction are perpendicular to each other; further comprising: the first load applying unit is fixed on the first plate and is in driving connection with the second plate, and the second load applying unit is fixed on the second plate and is in driving connection with the third plate. This experiment platform convenient operation can the dynamics and the direction of more accurate control load.
Description
Technical Field
The invention relates to the technical field of shoulder joint biomechanical experiments, in particular to a knee joint biomechanical experiment platform and a load applying structure.
Background
Chinese invention patent publication number: CN108766169B, name: the knee joint force loading and biomechanics characteristic detection experiment platform mainly comprises a frame unit, a femur posture adjusting unit, a femur reaction force and ligament strain measuring and force loading unit, a knee joint flexion driving unit, a tibia pose driven unit and a tibia internal and external rotation measuring unit; for specific contents, refer to patent CN108766169B, but the application of load requires manual setting of load, for example, in practical operation, the load may be set by a gravity weight, the method is very complex, and the force direction of the load cannot be precisely controlled, so that the experimental effect is not ideal.
Disclosure of Invention
Aiming at the problems in the prior art, the knee joint biomechanics experiment platform and the load applying structure are convenient to operate and capable of controlling the force and the direction of the load more accurately.
The specific technical scheme is as follows:
a load applying structure of a knee joint biomechanics experiment platform mainly comprises: the sliding table comprises a first plate, a second plate and a third plate, the second plate is arranged on the first plate in a sliding mode along a first direction, the third plate is arranged on the second plate in a sliding mode along a second direction, and the first direction and the second direction are perpendicular to each other;
further comprising: the first load applying unit is fixed on the first plate and is in driving connection with the second plate, and the second load applying unit is fixed on the second plate and is in driving connection with the third plate.
The load applying structure of the knee joint biomechanics experiment platform is characterized in that the first load applying unit comprises a first support, a first driving piece and a first tension sensor, the first support is arranged on the first plate, the first driving piece is fixed on the first support and is in driving connection with the first tension sensor, and the first tension sensor is fixedly connected with the second plate through a steel rope.
In the above load applying structure of the knee joint biomechanics experiment platform, the first driving member is a first cylinder, and the first load applying unit further comprises a first pressure regulating valve capable of regulating the gas pressure in the first cylinder.
In the load applying structure of the knee joint biomechanics experiment platform, the knee joint biomechanics experiment platform further comprises a distance adjusting plate, wherein the distance adjusting plate is adjustably fixed on the first plate, and the first support is fixed on the distance adjusting plate.
The load applying structure of the knee joint biomechanics experiment platform is further characterized in that the second load applying unit comprises a second support, a second driving piece and a second tension sensor, the second support is arranged on the second plate, the second driving piece is fixed on the second support and is in driving connection with the second tension sensor, and the second tension sensor is fixedly connected with the third plate.
In the above load applying structure of a knee joint biomechanics experiment platform, the second driving member comprises a second cylinder and a second pressure regulating valve which can be used for regulating the gas pressure in the second cylinder.
The load applying structure of the knee joint biomechanics experiment platform is characterized in that the second pressure regulating valve is connected with the first pressure regulating valve.
A knee joint biomechanics experiment platform comprises the load applying structure of the load applying structure, and further comprises a frame unit, a femur posture adjusting unit, a femur reaction force and ligament strain measuring and force loading unit, a knee joint flexion driving unit, a tibia pose driven unit and a tibia internal and external rotation measuring unit;
the femur posture adjusting unit is arranged on the frame unit, the femur reaction force and ligament strain measuring and force loading unit is hinged with the femur posture adjusting unit, the tibia internal and external rotation measuring unit is fixedly connected with the tibia pose driven unit, the knee joint bending driving unit comprises a lifting assembly, the lifting assembly is fixed on the frame unit, the sliding table is arranged at the top end of the lifting assembly, and the third plate of the sliding table is fixedly connected with the tibia pose driven unit.
The positive effects of the technical scheme are as follows:
according to the knee joint biomechanics experiment platform provided by the invention, the load applying structure is additionally arranged on the experiment platform, and comprises the three-dimensional load applying unit capable of applying load to the humerus in three mutually perpendicular directions and the axial load applying unit capable of applying load in the axial direction of the humerus, so that the application and control of the three-dimensional load can be realized, the application and control of the load in the axial direction of the humerus can be realized, and compared with the prior art, the knee joint biomechanics experiment platform is convenient to operate, and the force and the direction of the load can be more accurately controlled.
Drawings
FIG. 1 is a schematic structural diagram of a biomechanical testing platform for a knee joint according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the load applying structure in fig. 1.
In the drawings: 1. a frame unit; 2. a femoral posture adjustment unit; 3. femur reaction force and ligament strain measurement and force loading unit; 4. a knee joint flexion driving unit; 41. a lifting assembly; 5. a tibia pose slave unit; 6. a tibia internal and external rotation measuring unit; 7. a load applying structure; 71. a sliding table; 711. a first plate; 712. a second plate; 713. a third plate; 72. a first load applying unit; 721. a first support; 722. a first driving member; 7221. a first cylinder; 723. a first tension sensor; 724. a steel cord; 725. a first pressure regulating valve; 726. a distance adjusting plate; 727. a three-position five-way electromagnetic valve; 73. a second load applying unit; 731. a second support; 732. a second driving member; 7321. a second cylinder; 733. a second tension sensor; 734. a second pressure regulating valve; 10. a knee joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a biomechanics testing platform for a knee joint according to an embodiment of the present invention; fig. 2 is a schematic structural view of the load applying structure in fig. 1.
The embodiment of the invention discloses a biomechanics experiment platform for knee joints, which comprises: the device comprises a frame unit 1, a femur posture adjusting unit 2, a femur reaction force and ligament strain measuring and force loading unit 3, a knee joint flexion driving unit 4, a tibia pose driven unit 5, a tibia internal and external rotation measuring unit 6 and a load applying structure 7.
The femur posture adjusting unit 2 is arranged on the frame unit 1, the femur reaction force and ligament strain measuring and force loading unit 3 is hinged with the femur posture adjusting unit 2, and the tibia internal and external rotation measuring unit 6 is fixedly connected with the tibia pose driven unit 5.
Specifically, the structure and connection relationship of the frame unit 1, the femur posture adjusting unit 2, the femur reaction force and ligament strain measuring and force loading unit 3, the tibia pose driven unit 5 and the tibia internal and external rotation measuring unit 6 can refer to patent CN108766169B, and are not described herein in detail.
In the present embodiment, the structure of the knee joint flexion driving unit 4 is the same as that in patent CN108766169B, and for the convenience of describing this patent, it is further explained here that the knee joint flexion driving unit 4 includes a lifting assembly 41, and the lifting assembly 41 is fixed on the frame unit 1.
The load applying structure 7 comprises a sliding table 71, the sliding table 71 is arranged at the top end of the lifting assembly 41, the sliding table 71 comprises a first plate 711, a second plate 712 and a third plate 713, the second plate 712 is arranged on the first plate 711 in a sliding way along a first direction, the third plate 713 is arranged on the second plate 712 in a sliding way along a second direction, and the first direction and the second direction are perpendicular to each other;
the load applying structure 7 further includes: a first load applying unit 72 fixed to the first plate 711 and drivingly connected to the second plate 712, and a second load applying unit 73, the second load applying unit 73 being fixed to the second plate 712 and drivingly connected to the third plate 713.
Further, the first load applying unit 72 includes a first support 721, a first driving member 722, and a first tension sensor 723, the first support 721 is disposed on the first plate 711, the first driving member 722 is fixed on the first support 721 and is in driving connection with the first tension sensor 723, and the first tension sensor 723 is fixedly connected with the second plate 712 through a wire 724.
Further, the first driver 722 is a first cylinder 7221, and the first load applying unit 72 further includes a first pressure regulating valve 725 that may be used to regulate the amount of gas pressure within the first cylinder 7221.
Specifically, the first cylinder 7221 is disposed with its axis in a first direction, and may drive the second plate 712 to move linearly in the first direction.
Further, the first load applying unit 72 further includes a distance adjusting plate 726, the distance adjusting plate 726 is adjustably fixed to the first plate 711, and the first support 721 is fixed to the distance adjusting plate 726. This arrangement allows the distance between the first cylinder 7221 and the second plate 712 to be adjusted to accommodate a variety of different needs.
The third plate 713 of the slide table 71 is fixedly connected to the tibia attitude follower unit 5. For example, in the present embodiment, the third plate 713 and the tibial attitude follower unit 5 are fixedly connected by screws.
Therefore, the first load applying unit 72 can drive the end of the tibia pose driven unit 5 to move linearly along the first direction, so that the requirement of forward tension (in front of the human knee joint 10) required by the knee joint 10 experiment can be met.
Specifically, the second load applying unit 73 includes a second support 731, a second driver 732, and a second tension sensor 733, the second support 731 is disposed on the second plate 712, the second driver 732 is fixed to the second support 731 and is drivingly connected to the second tension sensor 733, and the second tension sensor 733 is fixedly connected to the third plate 713.
Further, the second driving member 732 is a second cylinder 7321, and the second load applying unit 73 further includes a second pressure regulating valve 734 for regulating the amount of gas pressure in the second cylinder 7321. Alternatively, in the present embodiment, the second pressure regulating valve 734 is connected to the first pressure regulating valve 725.
Further, air holes at two ends of the second air cylinder 7321 are communicated with a three-position five-way electromagnetic valve 727 through air pipes, the three-position five-way electromagnetic valve 727 is connected with an air pipe of the first pressure regulating valve 725, and the first pressure regulating valve 725 is connected with an air source through an air pipe. Alternatively, in the present embodiment, the first pressure regulating valve 725 and the second pressure regulating valve 734 may be electric proportional valves.
Therefore, the second load applying unit 73 can drive the end of the tibia pose driven unit 5 to move linearly along the second direction, and the force required by the varus and valgus bending moment required by the knee joint 10 experiment is further achieved.
According to the knee joint biomechanics experiment platform and the load applying structure provided by the invention, the load applying structure 7 is additionally arranged on the experiment platform, and the load applying structure 7 comprises the first load applying unit 72 and the second load applying unit 73 which can apply loads to the knee joint 10 along two mutually perpendicular directions.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A load applying structure of a knee joint biomechanics experiment platform is characterized by comprising a sliding table, wherein the sliding table comprises a first plate, a second plate and a third plate, the second plate is arranged on the first plate in a sliding mode along a first direction, the third plate is arranged on the second plate in a sliding mode along a second direction, and the first direction and the second direction are perpendicular to each other;
further comprising: the first load applying unit is fixed on the first plate and is in driving connection with the second plate, and the second load applying unit is fixed on the second plate and is in driving connection with the third plate.
2. The load applying structure of a biomechanical testing platform for a knee joint according to claim 1, wherein said first load applying unit comprises a first support, a first driving member and a first tension sensor, said first support is disposed on said first plate, said first driving member is fixed on said first support and is in driving connection with said first tension sensor, and said first tension sensor is fixedly connected with said second plate by a steel cable.
3. The load applying structure of knee joint biomechanical experiment platform of claim 2, wherein said first driving member is a first cylinder, and said first load applying unit further comprises a first pressure regulating valve operable to regulate the magnitude of gas pressure in said first cylinder.
4. The load applying structure of a biomechanical testing platform for a knee joint of claim 3, further comprising a distance adjustment plate adjustably secured to said first plate, said first support being secured to said distance adjustment plate.
5. The load applying structure of the biomechanical testing platform of the knee joint of claim 4, wherein said second load applying unit comprises a second support, a second driving member and a second tension sensor, said second support is disposed on said second plate, said second driving member is fixed on said second support and is in driving connection with said second tension sensor, and said second tension sensor is fixedly connected with said third plate.
6. The load applying structure of knee joint biomechanical testing platform of claim 5, wherein said second driving member comprises a second cylinder and a second pressure regulating valve operable to regulate the amount of gas pressure within said second cylinder.
7. The load applying structure of a biomechanical testing platform for a knee joint of claim 6, wherein said second pressure regulating valve is connected to said first pressure regulating valve.
8. A knee joint biomechanical experiment platform comprising the load applying structure of any one of claims 1 to 7, further comprising a frame unit, a femur posture adjusting unit, a femur reaction force and ligament strain measuring and force loading unit, a knee joint flexion driving unit, a tibia posture driven unit and a tibia internal and external rotation measuring unit;
the femur posture adjusting unit is arranged on the frame unit, the femur reaction force and ligament strain measuring and force loading unit is hinged with the femur posture adjusting unit, the tibia internal and external rotation measuring unit is fixedly connected with the tibia pose driven unit, the knee joint bending driving unit comprises a lifting assembly, the lifting assembly is fixed on the frame unit, the sliding table is arranged at the top end of the lifting assembly, and the third plate of the sliding table is fixedly connected with the tibia pose driven unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110130494.5A CN112816236A (en) | 2021-01-29 | 2021-01-29 | Knee joint biomechanics experiment platform and load applying structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110130494.5A CN112816236A (en) | 2021-01-29 | 2021-01-29 | Knee joint biomechanics experiment platform and load applying structure |
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| Publication Number | Publication Date |
|---|---|
| CN112816236A true CN112816236A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110130494.5A Pending CN112816236A (en) | 2021-01-29 | 2021-01-29 | Knee joint biomechanics experiment platform and load applying structure |
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| CN (1) | CN112816236A (en) |
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2021
- 2021-01-29 CN CN202110130494.5A patent/CN112816236A/en active Pending
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Effective date of registration: 20210618 Address after: Room 180611, Songqiao Road, Xinjiang District, Shanghai Applicant after: SHANGHAI INNOMOTION Inc. Address before: 200233 No. 600, Xuhui District, Shanghai, Yishan Road Applicant before: SHANGHAI 6TH PEOPLE'S Hospital |
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