CN216695826U - A sample fixing device for animal mechanics survey experiment - Google Patents
A sample fixing device for animal mechanics survey experiment Download PDFInfo
- Publication number
- CN216695826U CN216695826U CN202120686161.6U CN202120686161U CN216695826U CN 216695826 U CN216695826 U CN 216695826U CN 202120686161 U CN202120686161 U CN 202120686161U CN 216695826 U CN216695826 U CN 216695826U
- Authority
- CN
- China
- Prior art keywords
- base
- animal
- clamping
- specimen
- turntable
- 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.)
- Expired - Fee Related
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 16
- 241001465754 Metazoa Species 0.000 title claims abstract description 15
- 210000002435 tendon Anatomy 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims description 11
- 231100000206 health hazard Toxicity 0.000 abstract description 2
- 210000002758 humerus Anatomy 0.000 description 11
- 210000001519 tissue Anatomy 0.000 description 11
- 241000700159 Rattus Species 0.000 description 9
- 210000000323 shoulder joint Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 210000004095 humeral head Anatomy 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 206010043248 Tendon rupture Diseases 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010171 animal model Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000002745 epiphysis Anatomy 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011326 mechanical measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000513 rotator cuff Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A specimen fixing device for animal mechanics survey experiment relates to medical science experiment apparatus technical field. It comprises the following steps: a fixed seat; and the clamp is assembled on the fixed seat and used for clamping the specimen. The fixing seat is provided with a through groove corresponding to the clamp, and the through groove only can be penetrated by tendon tissues. The fixing base includes: the device comprises a base, a first clamping device and a second clamping device, wherein a first assembling hole is formed in the base; the rotary disc is assembled in the first assembling hole, can rotate around the central shaft of the first assembling hole and is used for assembling the clamp; and the positioning structure is assembled on the base or the turntable and used for positioning the turntable. Adopt above-mentioned technical scheme have convenient to use, do not have the advantage that health hazard, can adjust the direction of pulling and effectively prevent the sample damage in a flexible way and accurately.
Description
Technical Field
The utility model relates to the technical field of medical experimental tools, in particular to a specimen fixing device for an animal mechanics determination experiment.
Background
Repair of tendon rupture has been a medical problem, and animal models are important tools for finding new therapeutic approaches. The most commonly used animal model that mimics tendon rupture and repair in humans is the rat. In the research of simulating human shoulder tendon rupture repair by using rats, the mechanical strength of the repaired shoulder tendon tissue is an important index for postoperative evaluation. Because of the small size of the humerus and rotator cuff of the rat, a reliable fixation of the shoulder joint specimen is required when performing mechanical measurement of tendon strength.
The existing fixing method is to wrap the humerus part of a rat shoulder joint specimen with a curable high molecular polymer, and measure the tendon mechanical strength of the rat shoulder joint specimen through a mechanical testing device after the polymer is cured. The method has complicated operation steps and is time-consuming. And the humerus cannot be removed from the high molecular polymer. In addition, the polymer has certain toxicity when volatilized, and has certain harm to the health of experimenters. Therefore, improvements are desired.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and shortcomings of the prior art, and provides a specimen fixing device for an animal mechanics determination experiment, which has the advantages of convenience in use, no health hazard, capability of flexibly and accurately adjusting the traction direction and effectively preventing the specimen from being damaged.
In order to achieve the purpose, the utility model adopts the technical scheme that: a specimen holding device for animal mechanics determination experiments, comprising: a fixed seat; and the clamp is assembled on the fixed seat and used for clamping the specimen.
The fixing seat is provided with a through groove corresponding to the clamp, and the through groove only can be penetrated by tendon tissues.
The fixing base includes: the base is provided with a first assembling hole; the rotary disc is assembled in the first assembling hole, can rotate around the central shaft of the first assembling hole and is used for assembling the clamp; and the positioning structure is assembled on the base or the turntable and used for positioning the turntable.
An arc-shaped sliding groove is formed in the base and is positioned on the inner wall of the first assembling hole; the outer ring of the rotary table is provided with an arc-shaped convex block matched with the arc-shaped sliding groove.
The positioning structure is a screw.
A second assembling hole for assembling the clamp is formed in the rotary table; the jig includes: a first clamping portion; the second clamping part is assembled on the inner wall of the second assembling hole and is matched with the first clamping part for use so as to play a clamping role; and one end of the first adjusting screw is rotatably assembled on one side, far away from the clamping surface, of the first clamping part, and one end of the first adjusting screw is in threaded connection with the rotary disc.
And a plurality of teeth are arranged on the clamping surfaces of the first clamping part and the second clamping part.
The jig further includes: one end of the second adjusting screw is rotatably assembled on one side, far away from the clamping surface, of the second clamping part, and one end of the second adjusting screw is in threaded connection with the turntable.
The through groove is formed in the rotary disc, and a notch is formed in the base corresponding to the through groove.
The base includes: the base is provided with a third assembling hole for assembling mechanical testing equipment; the first arm and the second arm are detachably assembled on the seat body and are symmetrically arranged with each other.
After the technical scheme is adopted, the utility model has the beneficial effects that:
1. effectively preventing the phenomenon that the humerus head and the humerus shaft are separated at the epiphyseal layer when the tendon tissue is dragged, thereby causing the waste of the specimen.
2. Through setting first clamping part and second clamping part to the shape that the cross section is the V-arrangement to be provided with the tooth that plays anti-skidding effect on its clamping face, make the sample firmly be fixed in on the anchor clamps.
3. Through the rotary table and the base are rotatably assembled, under the condition of adjusting the traction device, the rotary table is rotated to adjust the deflection angles of the clamp and the humerus part so as to adjust the traction direction of the traction device of the mechanical test equipment to tendon and muscle tissues, and different contraction angles of the tendon of a human body are simulated, so that the reliability of the mechanical strength measurement data is improved. Further, the basic research efficiency related to the tendon is increased, the repeatability of mechanical data is improved, and an effective method for promoting the healing of the tendon and the bone surface is found.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an exploded view of the present invention.
Description of reference numerals: 1. a fixed seat; 11. a base; 111. a base body; 112. a first arm portion; 113. a second arm section; 12. a turntable; 121. an arc-shaped bump; 13. a positioning structure; 2. a clamp; 21. a first clamping portion; 22. a second clamping portion; 23. a first adjusting screw; 24. a second adjusting screw; 25. teeth; a. A first assembly hole; b. an arc-shaped chute; c. a second assembly hole; d. a through groove; e. and (4) a notch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.
The present embodiment relates to a specimen fixing device for animal mechanics determination experiments, as shown in fig. 1, including: fixing base 1 and anchor clamps 2. Wherein, fixing base 1 corresponds draw gear and is fixed in on the mechanical testing equipment, and anchor clamps 2 assemble on fixing base 1 for the centre gripping sample (like rat shoulder joint sample).
Further, the fixing base 1 includes: a base 11, a turntable 12 and a positioning structure 13.
Wherein, the base 11 is provided with a first assembly hole a. The rotary plate 12 is rotatably mounted in a first mounting hole a, which is circular. The jig 2 is fitted to the turntable 12. The positioning structure 13 is mounted on the base 11 or the turntable 12 and is used to position the turntable 12. The rotary disc 12 can rotate around the central shaft of the first assembling hole a to adjust the deflection angles of the clamp 2 and the humerus part of the rat shoulder joint specimen, so that the traction direction of a traction device of the mechanical testing equipment to tendon and muscle tissues of the rat shoulder joint specimen is adjusted, different contraction angles of tendons of a human body are simulated, and the reliability of mechanical strength measurement data is improved.
Preferably, the positioning structure 13 is a screw, bolt or jackscrew. In this embodiment, the positioning structure 13 is a screw, and one end of the screw penetrates through the base 11 and abuts against the turntable 12, so as to position the turntable 12; or one end of the screw penetrates through the rotary table 12 and is tightly propped against the base 11, so that the positioning of the rotary table 12 is realized.
As shown in fig. 2, an arc-shaped sliding groove b is formed in the inner wall of the first assembling hole a on the base 11; the outer ring of the rotary disc 12 is provided with an arc-shaped convex block 121 matched with the arc-shaped sliding groove b, and the rotary disc 12 is assembled with the base 11 in a rotating mode through the arc-shaped convex block 121 and the arc-shaped sliding groove b.
The jig 2 includes: a first clamping portion 21, a second clamping portion 22, a first adjusting screw 23 and a second adjusting screw 24.
The turntable 12 is provided with a second assembly hole c for the clamp 2 to be assembled, and the second assembly hole is preferably oval. The second clamping portion 22 is mounted on the inner wall of the second mounting hole c and is used in cooperation with the first clamping portion 21 for clamping. One end of the second adjusting screw 24 is rotatably assembled on the second clamping portion 22 at a side away from the clamping surface, and the other end is connected to the rotary table 12 in a threaded manner. One end of the first adjusting screw 23 is rotatably assembled on the first clamping portion 21 on the side far away from the clamping surface, and the other end is connected to the rotary table 12 in a threaded manner. When the clamping device is used, the first screw rod and the second screw rod are rotated to adjust the distance between the first clamping part 21 and the second clamping part 22, so that the clamping or loosening effect is achieved.
Preferably, the cross section of the clamping surface of the first clamping part 21 and the second clamping part 22 is V-shaped, and a plurality of teeth 25 are arranged on each of the clamping surfaces, so as to prevent the humerus from moving forward and backward. In addition, the cross section of the clamping surface of the first clamping portion 21 and the second clamping portion 22 may also be arc-shaped.
Preferably, the thickness of the turntable 12 corresponding to the through groove d is 2 mm. The diameter of the chute is 2 mm. The volume of the specimen holding apparatus was 70X 10 mm. The size of the through groove d is 3 x 14 mm.
When the distal end of the humeral portion is fixed and tendon tissue attached to the proximal end of the humeral head is pulled, in the case where the tendon tissue is relatively firm in the region of attachment to the bone surface, it is avoided that the humeral head and the humeral shaft are separated at the epiphyseal level, resulting in measurement failure and wasting valuable experimental specimens. The fixing seat 1 is provided with a through groove d corresponding to the clamp 2 and allowing only tendon tissue to pass through. Preferably, the through slot d is disposed on the turntable 12, and a gap e is disposed on the base 11 corresponding to the through slot d. When the specimen is fixed, the top of the humerus part is abutted against the wall of the second assembly hole c of the rotary disc 12 and corresponds to the through groove d, and the tendon tissue penetrates out of the through groove d, so that the phenomenon that the humeral head and the humeral shaft are separated at the epiphysis level when the tendon tissue is pulled can be prevented.
For ease of production, the base 11 comprises: seat 111, first arm 112 and second arm 113.
The base 11 is provided with a third assembling hole for assembling mechanical testing equipment, and the third assembling hole is a threaded hole. The first arm portion 112 and the second arm portion 113 are detachably assembled on the base 111 by bolts, and are symmetrically disposed.
The working principle of the utility model is roughly as follows: when in use, the base 11 needs to be fixed on the mechanical testing equipment. Then fixing the specimen: placing the rat shoulder joint specimen between the first clamping part 21 and the second clamping part 22, abutting the top of the humerus part against the wall of the second assembly hole c and corresponding to the through groove d, penetrating the tendon tissue out of the through groove d, and fixedly connecting the tendon tissue with a traction device, so that the phenomenon that the humeral head and the humeral shaft are separated at the epiphysis level when the tendon tissue is dragged can be effectively prevented; the first and second adjustment screws 23 and 24 are rotated to shorten the distance between the first and second clamping parts 21 and 22 until the humeral part is clamped, and at the same time, the humeral is firmly fixed to the jig 2 by the teeth 25. At this time, the mechanical test of tendon strength can be performed.
In the testing process, the deflection angles of the clamp 2 and the humerus part can be adjusted by adjusting and loosening the screws and rotating the turntable 12 so as to adjust the traction direction of the traction device of the mechanical testing equipment on tendon and muscle tissues, so that different contraction angles of the tendon of a human body can be simulated, and the reliability of the measurement data of the mechanical strength is improved. Further, the basic research efficiency related to the tendon is increased, the repeatability of mechanical data is improved, and the effective method for promoting the healing of the tendon and the bone surface is favorably found.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A specimen holding device for animal mechanics determination experiments, comprising:
a fixed seat (1); and the number of the first and second groups,
the fixture (2) is assembled on the fixed seat (1) and used for clamping a specimen;
the fixing base (1) comprises:
the device comprises a base (11), wherein a first assembling hole (a) is formed in the base (11);
a rotary disc (12) which is assembled in the first assembling hole (a), can rotate around the central shaft of the first assembling hole (a) and is used for assembling the clamp (2); and the number of the first and second groups,
a positioning structure (13) mounted on the base (11) or the turntable (12) for positioning the turntable (12);
a second assembling hole (c) for assembling the clamp (2) is formed in the rotary table (12);
the clamp (2) comprises:
a first clamping portion (21);
a second clamping part (22) which is assembled on the inner wall of the second assembling hole (c) and is matched with the first clamping part (21) for clamping; and the number of the first and second groups,
one end of the first adjusting screw rod (23) is rotatably assembled on the first clamping part (21) far away from one side of the clamping surface, and one end of the first adjusting screw rod is in threaded connection with the turntable (12).
2. The specimen fixing device for animal mechanics determination experiments according to claim 1, characterized in that a through groove (d) through which only tendon tissue can pass out is arranged on the fixing seat (1) corresponding to the clamp (2).
3. The specimen fixing device for animal mechanics determination experiments according to claim 2, characterized in that an arc-shaped sliding groove (b) is arranged on the inner wall of the base (11) positioned at the first assembling hole (a); and an arc-shaped convex block (121) matched with the arc-shaped sliding groove (b) is arranged on the outer ring of the turntable (12).
4. The specimen holding device for animal mechanics determination experiments according to claim 3, characterized in that the positioning structure (13) is a screw, a bolt or a jackscrew.
5. The specimen holding device for animal mechanics determination experiments according to claim 1, characterized in that a plurality of teeth (25) are arranged on the holding surface of each of the first holding portion (21) and the second holding portion (22).
6. The specimen holding device for animal mechanics determination experiments according to claim 1, characterized in that said clamp (2) further comprises:
and one end of the second adjusting screw rod (24) is rotatably assembled on the second clamping part (22) far away from one side of the clamping surface, and the other end of the second adjusting screw rod is in threaded connection with the turntable (12).
7. The specimen fixing device for animal mechanics determination experiments according to claim 2, characterized in that the through slot (d) is provided on the turntable (12), and the base (11) is provided with a notch (e) corresponding to the through slot (d).
8. The specimen holding device for animal mechanics determination experiments according to claim 1, characterized in that the base (11) comprises: the base (11) is provided with a third assembling hole for assembling mechanical testing equipment; a first arm part (112) and a second arm part (113) which are detachably assembled on the base body (111) and are symmetrically arranged with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686161.6U CN216695826U (en) | 2021-04-01 | 2021-04-01 | A sample fixing device for animal mechanics survey experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686161.6U CN216695826U (en) | 2021-04-01 | 2021-04-01 | A sample fixing device for animal mechanics survey experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216695826U true CN216695826U (en) | 2022-06-07 |
Family
ID=81823810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120686161.6U Expired - Fee Related CN216695826U (en) | 2021-04-01 | 2021-04-01 | A sample fixing device for animal mechanics survey experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216695826U (en) |
-
2021
- 2021-04-01 CN CN202120686161.6U patent/CN216695826U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5053039A (en) | Upper tibial osteotomy system | |
| AU666012B2 (en) | Arthroscopic indenter | |
| CN112444442A (en) | Dental implant fatigue test fixture | |
| WO2016111071A1 (en) | Fixture for biological tissue and method for attaching same | |
| CN216695826U (en) | A sample fixing device for animal mechanics survey experiment | |
| CN214010891U (en) | Dental implant fatigue test fixture | |
| JPH06277229A (en) | Device and method for centering hole of in-medulla nail | |
| Cawley et al. | The design of a vibration transducer to monitor the integrity of dental implants | |
| CN102506791B (en) | In-situ test positioning controllable mechanical loading and fixing device | |
| CN219391606U (en) | Material tensile mechanical test equipment | |
| CN116585047A (en) | Pressure-sensitive brain stereotactic instrument | |
| Kernohan et al. | Vibration arthrometry in assessment of knee disorders: the problem of angular velocity | |
| CN110353790B (en) | Tool for assisting parallel of branched chain of external bone fixator and force line of lower limb | |
| CN206348221U (en) | A kind of new pulling capacity test fixture | |
| CN201710441U (en) | Bone holder | |
| CN209983361U (en) | Adjustable insect leg joint friction test clamp based on friction testing machine | |
| CN209933047U (en) | Device for manufacturing experimental animal fracture model | |
| US20040116823A1 (en) | Evaluation of reflected time-energy profile for determination of damping capacity | |
| CN211804230U (en) | Automatic processing device for medical instrument parts | |
| CN116263389A (en) | Soft tissue periodic shear stress strain on-line detection equipment | |
| CN110024752B (en) | Clamp for insect leg joint friction test | |
| CN110179549A (en) | The ultrasonic guidance location adjusting device that animal in-vivo tissue is precisely caused injury | |
| CN201131787Y (en) | Supporting bone and resetting fixator | |
| CN220145712U (en) | Clamp for fixing dental trauma model | |
| CN213932394U (en) | Penetration depth detection device for air pressure ballistic shock wave therapeutic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220607 |