CN218899793U - Auxiliary fixing device for constructing rabbit knee cartilage defect model - Google Patents
Auxiliary fixing device for constructing rabbit knee cartilage defect model Download PDFInfo
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- CN218899793U CN218899793U CN202320114431.5U CN202320114431U CN218899793U CN 218899793 U CN218899793 U CN 218899793U CN 202320114431 U CN202320114431 U CN 202320114431U CN 218899793 U CN218899793 U CN 218899793U
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Abstract
The utility model provides an auxiliary fixing device for constructing rabbit knee cartilage defect model, including a base, be provided with a fixing base on the base, be provided with a slot in the inclined plane of fixing base front side, be provided with an opening in the both sides wall of slot respectively, be provided with two montants on the base, be connected with a horizontal pole between two montants, the horizontal pole sets up in the top of fixing base, all connect through an adjusting device respectively between horizontal pole and the two montants, the cover is provided with a guide block on the horizontal pole, the guide block sets up between two montants, be provided with a guiding hole in the guide block. According to the utility model, the stability of molding operation is improved through the fixed supporting function of the fixing seat, the cross rod and the vertical rod, and the depth and the direction of drilling molding can be effectively controlled by the guide hole, the depth finder and the depth limiting drill bit, so that the standardization and unification of the molding of bone cartilage defects of the rabbits in the same batch are facilitated.
Description
Technical Field
The utility model relates to a human living article, in particular to a medical instrument, and especially relates to an auxiliary fixing device for constructing a rabbit knee cartilage defect model.
Background
In the field of orthopedics, experience is often required to be exercised on the basis of studying animal models. Among them, rabbit knee cartilage defect model is a common study object. In the process of constructing a rabbit knee cartilage defect model, the rabbit lower limb is firstly required to be fixed, and then the rabbit knee femoral condyle is drilled, however, an auxiliary fixing device for the rabbit lower limb is absent in the prior art, so that the rabbit lower limb cannot be well fixed and supported, the operation stability is poor, the drilling molding depth and direction cannot be controlled, and the standardization and unification of the same batch of experimental rabbit bone cartilage defect molding cannot be realized.
Disclosure of Invention
The utility model aims to provide an auxiliary fixing device for constructing a rabbit knee cartilage defect model, which aims to solve the technical problem that the auxiliary fixing device for rabbit lower limbs is lacked in the prior art.
The utility model relates to an auxiliary fixing device for constructing a rabbit knee cartilage defect model, which comprises a base, wherein a fixing seat is arranged on the base, a horizontal plane and two inclined planes are arranged on the fixing seat, the two inclined planes are respectively arranged on the front side and the rear side of the horizontal plane, a groove is formed in the inclined plane on the front side of the fixing seat, an opening is respectively formed in the two side walls of the groove, two vertical rods are respectively arranged on the base, the two vertical rods are respectively arranged on the left side and the right side of the fixing seat, a cross rod is connected between the two vertical rods, the cross rod is arranged above the fixing seat, the cross rod and the two vertical rods are respectively connected through an adjusting device, a guide block is sleeved on the cross rod, the guide block is arranged between the two vertical rods, and a guide hole is formed in the guide block.
Further, the adjusting device comprises an adjusting block, a longitudinal hole and a transverse hole are formed in the adjusting block, the axial direction of the transverse hole is perpendicular to the axial direction of the longitudinal hole, the transverse hole is formed in the front of the longitudinal hole, the transverse rod penetrates through the transverse hole, the vertical rod penetrates through the longitudinal hole, a first threaded hole is formed in the side wall of the transverse hole in the radial direction, a second threaded hole is formed in the side wall of the longitudinal hole in the radial direction, a first screw and a second screw are respectively arranged in the first threaded hole and the second threaded hole, the transverse rod is tightly propped and fixed by the first screw, and the vertical rod is tightly propped and fixed by the second screw.
Further, the base on be provided with three screw sleeve respectively in the left and right sides of fixing base, screw sleeve sets up along the fore-and-aft direction interval of base, two the bottom of montant all be provided with the screw thread, two the bottom of montant respectively threaded connection in one screw sleeve.
Further, the bottom of the groove is provided with an anti-slip pad.
Further, the anti-slip pad is made of silica gel or rubber.
Further, the depth measuring device comprises a depth measuring device and a depth limiting drill bit, wherein the depth measuring device is composed of a round rod, and scales are arranged on the round rod and the depth limiting drill bit.
Compared with the prior art, the utility model has positive and obvious effects. The height and angle of the cross rod can be adjusted through the adjusting device between the cross rod and the vertical rod, so that the guide hole can be attached to the knee and femur condyle of the rabbit as much as possible, the vertical rod can be subjected to height fine adjustment and front and back position adjustment through the threaded sleeve on the base, the guide holes with different sizes can be selected according to animal test requirements, and the depth limiting drill bit with the same size is matched, so that bone cartilage defects with different areas are constructed. The stability of molding operation is improved through the fixed support effect of the fixing seat, the cross rod and the vertical rod, the depth and the direction of drilling molding can be effectively controlled by the guide hole, the depth finder and the depth limiting drill bit, and the standardization and unification of the molding of the bone cartilage defects of the experimental rabbits in the same batch are facilitated.
Drawings
FIG. 1 is a schematic view of an auxiliary fixture for constructing a model of cartilage defect in a knee bone of a rabbit according to the present utility model.
Fig. 2 is a schematic view of an adjusting device in an auxiliary fixing device for constructing a cartilage defect model of a knee bone of a rabbit according to the present utility model.
Description of the embodiments
The present utility model is further described below with reference to the drawings and examples, but the present utility model is not limited to the examples, and all the similar structures and similar variations using the present utility model should be included in the protection scope of the present utility model. The use of the directions of up, down, front, back, left, right, etc. in the present utility model is only for convenience of description, and is not a limitation of the technical scheme of the present utility model.
As shown in fig. 1-2, the auxiliary fixing device for constructing a rabbit knee cartilage defect model of the utility model comprises a base 1, wherein a fixing seat 2 is arranged on the base 1, a horizontal plane 3 and two inclined planes 4 are arranged on the fixing seat 2, the two inclined planes 4 are respectively arranged on the front side and the rear side of the horizontal plane 3, a groove 5 is arranged in the inclined plane 4 on the front side of the fixing seat 2, an opening 6 is respectively arranged in two side walls of the groove 5, two vertical rods 7 are arranged on the base 1, the two vertical rods 7 are respectively arranged on the left side and the right side of the fixing seat 2, a cross rod 8 is connected between the two vertical rods 7, the cross rod 8 is arranged above the fixing seat 2, the cross rod 8 and the two vertical rods 7 are respectively connected through an adjusting device 9, a guide block 10 is sleeved on the cross rod 8, the guide block 10 is arranged between the two vertical rods 7, and a guide hole 11 is arranged in the guide block 10.
Further, the adjusting device 9 includes an adjusting block 12, a longitudinal hole 13 and a transverse hole 14 are arranged in the adjusting block 12, the axial direction of the transverse hole 14 is perpendicular to the axial direction of the longitudinal hole 13, the transverse hole 14 is arranged in front of the longitudinal hole 13, the cross rod 8 is arranged in the transverse hole 14 in a penetrating manner, the vertical rod 7 is arranged in the longitudinal hole 13 in a penetrating manner, a first threaded hole is arranged in the side wall of the transverse hole 14 in the radial direction, a second threaded hole is arranged in the side wall of the longitudinal hole 13 in the radial direction, a first screw 15 and a second screw 16 are respectively arranged in the first threaded hole and the second threaded hole, the cross rod 8 is tightly propped and fixed by the first screw 15, and the vertical rod 7 is tightly propped and fixed by the second screw 16.
Further, three threaded sleeves 17 are respectively arranged on the left side and the right side of the fixed seat 2 on the base 1, the threaded sleeves 17 are arranged at intervals along the front and the rear directions of the base, threads are respectively arranged at the bottoms of the two vertical rods 7, and the bottoms of the two vertical rods 7 are respectively in threaded connection with one threaded sleeve 17.
Further, a non-slip mat is arranged at the bottom of the groove 5.
Further, the anti-slip pad is made of silica gel or rubber.
Further, the depth measuring device comprises a depth measuring device and a depth limiting drill bit, wherein the depth measuring device is composed of a round rod, and scales are arranged on the round rod and the depth limiting drill bit.
Specifically, the base 1, the threaded sleeve 17, the anti-skid pad, the depth finder, the depth-limiting drill bit, etc. in this embodiment all adopt the known schemes in the prior art, and those skilled in the art will understand the schemes and will not be described herein.
The working principle of the embodiment is as follows:
the rabbit lower limb is placed on the fixing base 2, the rabbit knee femoral condyle is placed on the horizontal plane 3, the shank is placed in the groove 5, the anti-slip pad can prevent the rabbit lower limb from sliding, the binding band passes through the two openings 6 to bind the rabbit lower limb, then the first screw 15 and the second screw 16 are unscrewed, and then the position height and the angle of the guide block 10 are adjusted, the guide hole 11 is tightly attached to the rabbit knee femur, the drilling position is aligned, the first screw 15 and the second screw 16 are screwed again, the guide block 10 is fixed, if the height is insufficient, the height of the vertical rod 7 can be adjusted by using the vertical rod 7 and the threaded sleeve 17, and then the height of the guide block 10 is improved. A plurality of threaded sleeves 17 can also adjust the front-rear position of the vertical rod 7.
The depth gauge is a metal round bar matched with the guide hole 11 in size, scales in mm are arranged on the metal round bar, the lower limb of a rabbit is fixed, after the guide block 10 is propped against the femoral condyle, the depth gauge is firstly used for penetrating through the guide hole 11, when the head end of the depth gauge is propped against the femoral condyle, the reading of the outer side edge of the guide hole 11 on the depth gauge is read to be an initial value, namely the distance from the cartilage surface of the rabbit knee to the outer surface of the guide hole 11, if the reading is 13mm, the depth of the planned bone cartilage molding is 5mm, and the length of the depth-limiting drill is preset to be 13+5=18 mm.
The diameter of the guide hole 11 may be 3/3.5/4/4.5/5mm. The pilot hole 11 itself has a certain length to allow only the drill to be vertically inserted, and plays a role of restricting the drilling direction.
The height and angle of the cross rod 8 can be adjusted through the adjusting device 9 between the cross rod 8 and the vertical rod 7, so that the guide hole 11 can be attached to the knee and femur condyle of the rabbit as much as possible, the vertical rod 7 can be subjected to height fine adjustment and front and back position adjustment through the threaded sleeve 17 on the base 1, and the guide holes 11 (3-5 mm) with different sizes can be selected according to animal test requirements and matched with depth limiting drills with the same size, so that osteochondral defects with different areas can be constructed. After the vertical rod 7 and the cross rod 8 are installed, a depth measuring device is used for measuring the distance from the cartilage surface of the knee of the rabbit to the outer surface of the guide hole 11, and meanwhile, the length of the depth limiting drill bit and the drilling depth are adjusted according to the depth of the bone cartilage defect molding. The utility model can increase the stability of molding operation through the fixed supporting function of the fixing seat 2, the cross rod 8 and the vertical rod 7, and the guide hole 11, the depth finder and the depth limiting drill bit can effectively control the depth and the direction of drilling molding, thereby being beneficial to the standardization and unification of the molding of bone cartilage defects of the experimental rabbits in the same batch.
Claims (6)
1. An auxiliary fixing device for constructing a rabbit knee cartilage defect model is characterized in that: including a base, be provided with a fixing base on the base, be provided with a horizontal plane and two inclined planes on the fixing base, two inclined planes set up respectively in the front and back both sides of horizontal plane, be provided with a slot in the inclined plane of fixing base front side, be provided with an opening in the both sides wall of slot respectively, be provided with two montants on the base, two montants set up respectively in the left side and the right-hand of fixing base, be connected with a horizontal pole between two montants, the horizontal pole sets up in the top of fixing base, all connect through an adjusting device respectively between horizontal pole and the two montants, the cover is provided with a guide block on the horizontal pole, the guide block sets up between two montants, be provided with a guiding hole in the guide block.
2. An auxiliary fixture for constructing a model of cartilage defects in rabbit knee as claimed in claim 1, wherein: the adjusting device comprises an adjusting block, a longitudinal hole and a transverse hole are formed in the adjusting block, the axial direction of the transverse hole is perpendicular to the axial direction of the longitudinal hole, the transverse hole is arranged in front of the longitudinal hole, the transverse rod penetrates through the transverse hole, the vertical rod penetrates through the longitudinal hole, a first threaded hole is formed in the side wall of the transverse hole in the radial direction, a second threaded hole is formed in the side wall of the longitudinal hole in the radial direction, a first screw and a second screw are respectively arranged in the first threaded hole and the second threaded hole, the transverse rod is tightly propped and fixed by the first screw, and the vertical rod is tightly propped and fixed by the second screw.
3. An auxiliary fixture for constructing a model of cartilage defects in rabbit knee as claimed in claim 1, wherein: the base on be provided with three screw sleeve respectively in the left and right sides of fixing base, screw sleeve sets up along the fore-and-aft direction interval of base, two the bottom of montant all be provided with the screw thread, two the bottom of montant respectively threaded connection in one screw sleeve.
4. An auxiliary fixture for constructing a model of cartilage defects in rabbit knee as claimed in claim 1, wherein: the bottom of the groove is provided with an anti-slip pad.
5. An auxiliary fixture for constructing a model of cartilage defects in rabbit knees as recited in claim 4, wherein: the anti-slip pad is made of silica gel or rubber.
6. An auxiliary fixture for constructing a model of cartilage defects in rabbit knee as claimed in claim 1, wherein: the depth measuring device is composed of a round rod, and scales are arranged on the round rod and the depth limiting drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320114431.5U CN218899793U (en) | 2023-01-18 | 2023-01-18 | Auxiliary fixing device for constructing rabbit knee cartilage defect model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320114431.5U CN218899793U (en) | 2023-01-18 | 2023-01-18 | Auxiliary fixing device for constructing rabbit knee cartilage defect model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218899793U true CN218899793U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320114431.5U Active CN218899793U (en) | 2023-01-18 | 2023-01-18 | Auxiliary fixing device for constructing rabbit knee cartilage defect model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218899793U (en) |
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2023
- 2023-01-18 CN CN202320114431.5U patent/CN218899793U/en active Active
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