CN202497132U - Animal intervertebral disc body assistor - Google Patents
Animal intervertebral disc body assistor Download PDFInfo
- Publication number
- CN202497132U CN202497132U CN201120575941XU CN201120575941U CN202497132U CN 202497132 U CN202497132 U CN 202497132U CN 201120575941X U CN201120575941X U CN 201120575941XU CN 201120575941 U CN201120575941 U CN 201120575941U CN 202497132 U CN202497132 U CN 202497132U
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- CN
- China
- Prior art keywords
- bar
- intervertebral disc
- assistor
- threaded rod
- sleeve
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Abstract
The utility model discloses an animal intervertebral disc body assistor. The animal intervertebral disc body assistor comprises: a threaded dowel bar, a fixation bar, a transmission bar, and a fixation sleeve. The threaded dowel bar comprises a first slide bar and a second slide bar which are located at two ends of the threaded dowel bar separately, two threaded bars which are arranged between the two slide bars, and a middle bar which is arranged between the two threaded bars, wherein the two threaded bars are provided with a nut separately. The fixation bar is arranged at the free end of the first slide bar, wherein a basic hole A is arranged on the front end of the fixation bar. The transmission bar is sleeved onto the first slide bar, wherein the transmission bar comprises a second supporting leg arranged on a sleeve A and a force measuring device fixation bar A, and a basic hole B is arranged on the front end of the second supporting leg. The fixation sleeve is sleeved onto the second slide bar, wherein the fixation sleeve comprises a force measuring device fixation bar B arranged on a sleeve B. A force measuring device is arranged between the force measuring device fixation bar A and the force measuring device fixation bar B. Tension and compression load tests are performed at the same time by changing the applied force through the adjustment of the nuts to simulate mechanical loads on the intervertebral disc so as to provide the most favorable security for body biomechanics researches on intervertebral disc degeneration.
Description
Technical field
This utility model relates to spinal surgery biomechanics experimental technique field, especially relates to a kind of animal intervertebral disc at the body assistor.
Background technology
Rigidity, intensity and the muscle of keeping the dependence skeleton of body configuration and normal junction structure relation thereof, the elastical retraction power of ligament soft tissue.In daily life and work, human body often is in the mechanics dynamical state,, wound bad when posture or when senescent deterioration occurring and changing, obstacle will take place the function at some position of spinal column.Intervertebral disc is between two vertebral bodys; Can cushion external force, absorb concussion; Intervertebral disc bears load such as compression, flexing and the shear-type load of various complicacies; Intervertebral disc degeneration is the basis of spinal column degenerative disease, even intervertebral disc and vertebral body also receive stress stimulation all the time under quiescent condition, the two its internal pressure when bearing load will obviously increase; Therefore the research of intervertebral disc is the most important thing of spinal biomechanics research, but the stress of how to simulate under the physiological condition carries out normal compression of mechanics loader simulation and the stretching load that biomechanics Research does not still have special use at present to spinal column.
The utility model content
The purpose of this utility model is exactly in order to address the above problem; Entity research through animal; A animal intervertebral disc of processing and fabricating is at the body assistor; It can change active force through the adjusting to nut and carry out the test of tension force and compressive load simultaneously, and the mechanical load of simulation intervertebral disc provides sound assurance for intervertebral disc degeneration in the body biomechanics Research.
To achieve these goals, this utility model adopts following technical scheme:
A kind of animal intervertebral disc is characterized in that at the body assistor it comprises:
Screw thread as supporting member passes bar; It comprises that being positioned at screw thread passes bar two ends and ganoid first, second sliding bar, is located at first, second threaded rod between two sliding bars; First threaded rod is adjacent with first sliding bar, and second threaded rod is adjacent with second sliding bar, is intermediate bar between said first, second threaded rod; First, second threaded rod is provided with first, second nut that can rotate back and forth along threaded rod respectively, and the said second sliding bar free end is provided with stopping means;
As the fixed bar of first feet, it is located at the first sliding bar free end, and the front end setting of fixed bar screw thread biography far away bar wears the datum hole A of Kirschner wire;
The matching and fixing bar is fixed in the drive link on the intervertebral disc with assistor; It is sheathed on first sliding bar through sleeve A movably; Drive link comprises to be located on the sleeve and second feet (22) consistent with the fixed bar bearing of trend and the device for measuring force fixed bar A opposite with the fixed bar bearing of trend, and the front end setting of said second feet screw thread biography far away bar wears the datum hole B of Kirschner wire;
Be sheathed on the fixed cover on second sliding bar through sleeve B, it comprises that being located at sleeve B goes up and the device for measuring force fixed bar B consistent with pulling force drive link bearing of trend with can move freely, wherein,
Between said device for measuring force fixed bar A and device for measuring force fixed bar B device for measuring force is set.
The cross section of said sliding bar and sleeve A, sleeve B is square.
Said stopping means is the bolt that is installed in the second sliding bar end, and this bolt assembles through the bolt hole of offering in the second sliding bar end, and the cross-sectional area of said bolt is greater than the area of the second sliding bar cross section.
Said device for measuring force is spring scale or pulling force dynamometer.
The equal in length of the said fixed bar and second feet.
The length c of said first sliding bar
1, first threaded rod length c
2, intermediate bar length c
3, second threaded rod length c
4, second sliding bar length c
5Ratio be c
1: c
2: c
3: c
4: c
5=17: 15: 17: 15: 11.
The length e of said first, second nut
1Equate, and with the length c of first threaded rod
2Ratio be e
1: c
2=14: 15.
Said device for measuring force fixed bar A and device for measuring force fixed bar B deviate from device for measuring force one side separately groove are set.
Said device for measuring force two ends are fixed in the groove with rope or drag hook respectively.
Said intermediate bar smooth surface or the screw thread that is equal in this intermediate bar setting and first, second threaded rod.
The beneficial effect of this utility model is: change active force through the adjusting to nut and carry out the test of tension force and compression load simultaneously, the mechanical load of simulation intervertebral disc provides best guarantee for intervertebral disc degeneration in the body biomechanics Research.
Description of drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model stretching design sketch.
Fig. 3 is this utility model compression effectiveness figure.
Fig. 4 passes the bar structural representation for screw thread.
Fig. 5 is an A-A cutaway view among Fig. 4.
Fig. 6 is a B-B cutaway view among Fig. 4.
Fig. 7 a is the structural representation of first, second nut.
Fig. 7 b is the side-looking structural representation of first, second nut.
The specific embodiment
For technological means, creation characteristic that this utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth this utility model.
Shown in Fig. 1～6, a kind of animal intervertebral disc is at the body assistor, and it comprises: the screw thread as supporting member passes bar 7; It comprises that being positioned at screw thread passes bar two ends and ganoid first, second sliding bar 71,72, is located at first, second threaded rod 73,74 between two sliding bars; First threaded rod is adjacent with first sliding bar; Second threaded rod is adjacent with second sliding bar, is intermediate bar 75 between said first, second threaded rod, and first, second threaded rod is provided with first, second nut 3 that can rotate back and forth along threaded rod respectively; 4, said second sliding bar, 72 free ends are provided with stopping means; As the fixed bar 1 of first feet, it is vertical at the first sliding bar free end through welding manner, and the front end setting of fixed bar screw thread biography far away bar wears the datum hole A11 of Kirschner wire; The matching and fixing bar is fixed in the drive link 2 on the intervertebral disc with assistor; It is sheathed on first sliding bar through sleeve A21 movably; Drive link comprises to be located on the sleeve and second feet 22 consistent with the fixed bar bearing of trend and the device for measuring force fixed bar A23 opposite with the fixed bar bearing of trend, and the front end setting of said second feet screw thread biography far away bar wears the datum hole B24 of Kirschner wire; Be sheathed on the fixed cover 5 on second sliding bar through sleeve B51 with can move freely; It comprises that being located at sleeve B goes up and the device for measuring force fixed bar B52 consistent with pulling force drive link bearing of trend; Wherein, between said device for measuring force fixed bar A and device for measuring force fixed bar B device for measuring force 6 is set.
Referring to Fig. 5, Fig. 6, the cross section of said first, second sliding bar 71,72 is square; The cross section of said sleeve A, sleeve B also is square; Be convenient to be set on the sliding bar, and the intracavity section of sleeve A and sleeve B is slightly larger than the sectional area of sliding bar, is convenient to slide better.
Said stopping means is the bolt 720 that is installed in the second sliding bar end; This bolt assembles through the bolt hole of offering in the second sliding bar end 721; The cross-sectional area of said bolt is greater than the area of the second sliding bar cross section, and this stopping means prevents that fixed cover 5 from skidding off second sliding bar.
Said device for measuring force is spring scale or pulling force dynamometer, certainly, also can adopt the device for measuring force of other type.
The equal in length of the said fixed bar 1 and second feet 22 is convenient to fixedly intervertebral disc.
Referring to Fig. 4, the length c of said first sliding bar
1, first threaded rod length c
2, intermediate bar length c
3, second threaded rod length c
4, second sliding bar length c
5Ratio be c
1: c
2: c
3: c
4: c
5=17: 15: 17: 15: 11.
Referring to Fig. 7 a, Fig. 7 b, first, second nut profile is consistent in this case, and length e
1Equate, with the length c of first threaded rod
2Ratio be e
1: c
2=14: 15.
Said device for measuring force fixed bar A23 and device for measuring force fixed bar B52 deviate from device for measuring force one side separately groove 230,520 are set, the rope or the drag hook of convenient sheathed fixedly device for measuring force.
Said device for measuring force two ends are fixed in the groove 230,520 with rope or drag hook respectively, also can on device for measuring force fixed bar A23, device for measuring force fixed bar B52, fixing hole be set, and can accomplish the effect of stationary rope or drag hook equally.
The smooth surface of intermediate bar described in this case; The bar of intermediate bar is directly less than the internal diameter of first, second nut; Make things convenient for nut to move; Also or in the screw thread that this intermediate bar setting and first, second threaded rod are equal to, can let nut on the whole section threaded rod that forms by first, second threaded rod and intermediate bar, move equally.
The work process of this utility model is: before the use, the datum hole A of fixed bar 1, drive link 2 front ends, datum hole B are through insert the Kirschner wire of vertebral body, and regulate the pulling force dynamometer this moment, makes it be in the state of not stressing.Turn second nut 4, fixing first nut 3 is motionless, and power is through fixed cover 5, and pulling force dynamometer 6 can produce pulling force to drive link 2, realizes the stretching (as shown in Figure 2) to intervertebral disc; Turn first nut 3, fixing second nut 4 is motionless, and power left produces pressure to drive link 2, realizes the compression (as shown in Figure 3) to intervertebral disc.Simultaneously, the numerical value of pulling force and pressure all can show on the pulling force dynamometer.
The above is merely the preferred implementation of this utility model, and the protection domain of this utility model is not limited in above-mentioned embodiment, and every technical scheme that belongs to this utility model principle all belongs to the protection domain of this utility model.For a person skilled in the art, some improvement of under the prerequisite of the principle that does not break away from this utility model, carrying out, these improve the protection domain that also should be regarded as this utility model.
Claims (10)
1. an animal intervertebral disc is characterized in that at the body assistor it comprises:
Screw thread as supporting member passes bar; It comprises that being positioned at screw thread passes bar two ends and ganoid first, second sliding bar, is located at first, second threaded rod between two sliding bars; First threaded rod is adjacent with first sliding bar, and second threaded rod is adjacent with second sliding bar, is intermediate bar between said first, second threaded rod; First, second threaded rod is provided with first, second nut that can rotate back and forth along threaded rod respectively, and the said second sliding bar free end is provided with stopping means;
As the fixed bar of first feet, it is located at the first sliding bar free end, and the front end setting of fixed bar screw thread biography far away bar wears the datum hole A of Kirschner wire;
The matching and fixing bar is fixed in the drive link on the intervertebral disc with assistor; It is sheathed on first sliding bar through sleeve A movably; Drive link comprises to be located on the sleeve and second feet consistent with the fixed bar bearing of trend and the device for measuring force fixed bar A opposite with the fixed bar bearing of trend, and the front end setting of said second feet screw thread biography far away bar wears the datum hole B of Kirschner wire;
Be sheathed on the fixed cover on second sliding bar through sleeve B, it comprises that being located at sleeve B goes up and the device for measuring force fixed bar B consistent with pulling force drive link bearing of trend with can move freely, wherein,
Between said device for measuring force fixed bar A and device for measuring force fixed bar B device for measuring force is set.
2. animal intervertebral disc according to claim 1 is characterized in that at the body assistor cross section of said sliding bar and sleeve A, sleeve B is square.
3. animal intervertebral disc according to claim 1 is at the body assistor; It is characterized in that; Said stopping means is the bolt that is installed in the second sliding bar end; This bolt assembles through the bolt hole of offering in the second sliding bar end, and the cross-sectional area of said bolt is greater than the area of the second sliding bar cross section.
4. animal intervertebral disc according to claim 1 is characterized in that at the body assistor said device for measuring force is spring scale or pulling force dynamometer.
5. animal intervertebral disc according to claim 1 is characterized in that at the body assistor, the equal in length of the said fixed bar and second feet.
6. animal intervertebral disc according to claim 1 is characterized in that at the body assistor, the length c of said first sliding bar
1, first threaded rod length c
2, intermediate bar length c
3, second threaded rod length c
4, second sliding bar length c
5Ratio be c
1: c
2: c
3: c
4: c
5=17: 15: 17: 15: 11.
7. animal intervertebral disc according to claim 1 is characterized in that at the body assistor, the length e of said first, second nut
1Equate, and with the length c of first threaded rod
2Ratio be e
1: c
2=14: 15.
8. animal intervertebral disc according to claim 1 is characterized in that at the body assistor said device for measuring force fixed bar A and device for measuring force fixed bar B deviate from device for measuring force one side separately groove is set.
According to claim 1 or 4 described animal intervertebral disc at the body assistor, it is characterized in that said device for measuring force two ends are fixed in the groove with rope or drag hook respectively.
10. animal intervertebral disc according to claim 1 is characterized in that at the body assistor, said intermediate bar smooth surface or the screw thread that is equal in this intermediate bar setting and first, second threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120575941XU CN202497132U (en) | 2011-12-31 | 2011-12-31 | Animal intervertebral disc body assistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120575941XU CN202497132U (en) | 2011-12-31 | 2011-12-31 | Animal intervertebral disc body assistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202497132U true CN202497132U (en) | 2012-10-24 |
Family
ID=47033767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120575941XU Expired - Fee Related CN202497132U (en) | 2011-12-31 | 2011-12-31 | Animal intervertebral disc body assistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202497132U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980801A (en) * | 2012-12-27 | 2013-03-20 | 天津理工大学 | Loading device for intervertebral disc mechanics performance test |
| CN103550016A (en) * | 2013-11-11 | 2014-02-05 | 中国人民解放军第三军医大学第一附属医院 | Uniform force applying device for bionic culturing of intervertebral disc |
| CN109363790A (en) * | 2018-12-18 | 2019-02-22 | 上海市东方医院 | Tail bone intervertebral disc degeneration experimental provision |
| CN114073601A (en) * | 2020-08-12 | 2022-02-22 | 中国人民解放军空军军医大学 | Novel rat intervertebral disc mechanics adjusting device |
| CN114073600A (en) * | 2020-08-12 | 2022-02-22 | 贾昊若 | Novel rabbit lumbar intervertebral disc pressure regulating device |
-
2011
- 2011-12-31 CN CN201120575941XU patent/CN202497132U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980801A (en) * | 2012-12-27 | 2013-03-20 | 天津理工大学 | Loading device for intervertebral disc mechanics performance test |
| CN103550016A (en) * | 2013-11-11 | 2014-02-05 | 中国人民解放军第三军医大学第一附属医院 | Uniform force applying device for bionic culturing of intervertebral disc |
| CN103550016B (en) * | 2013-11-11 | 2015-05-27 | 中国人民解放军第三军医大学第一附属医院 | Uniform force applying device for bionic culturing of intervertebral disc |
| CN109363790A (en) * | 2018-12-18 | 2019-02-22 | 上海市东方医院 | Tail bone intervertebral disc degeneration experimental provision |
| CN109363790B (en) * | 2018-12-18 | 2023-11-21 | 上海市东方医院 | Experimental device for degeneration of coccyx intervertebral disc |
| CN114073601A (en) * | 2020-08-12 | 2022-02-22 | 中国人民解放军空军军医大学 | Novel rat intervertebral disc mechanics adjusting device |
| CN114073600A (en) * | 2020-08-12 | 2022-02-22 | 贾昊若 | Novel rabbit lumbar intervertebral disc pressure regulating device |
| CN114073601B (en) * | 2020-08-12 | 2024-04-19 | 中国人民解放军空军军医大学 | Mechanical regulating device for rat intervertebral disc |
| CN114073600B (en) * | 2020-08-12 | 2024-08-20 | 贾昊若 | Rabbit lumbar disc pressure regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Hongguang Inventor before: Wang Jiacheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG JIACHENG TO: XU HONGGUANG |
|
| 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: 20121024 Termination date: 20171231 |