CN210749677U - Femoral stem prosthesis driver for small animal - Google Patents
Femoral stem prosthesis driver for small animal Download PDFInfo
- Publication number
- CN210749677U CN210749677U CN201921054677.8U CN201921054677U CN210749677U CN 210749677 U CN210749677 U CN 210749677U CN 201921054677 U CN201921054677 U CN 201921054677U CN 210749677 U CN210749677 U CN 210749677U
- Authority
- CN
- China
- Prior art keywords
- handle
- prosthesis
- groove
- stem prosthesis
- axostylus axostyle
- 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.)
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Links
- 241001465754 Metazoa Species 0.000 title claims description 13
- 210000001694 thigh bone Anatomy 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 7
- 210000000588 acetabulum Anatomy 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 208000007446 Hip Dislocation Diseases 0.000 description 1
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 206010028851 Necrosis Diseases 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000011540 hip replacement Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
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- Prostheses (AREA)
Abstract
The utility model aims at providing a can guarantee femoral stem prosthesis puts into femoral stem driver for toy of precision in thighbone, including the axostylus axostyle, the proximal end tip of axostylus axostyle is provided with the draw-in groove that is used for the joint on the handle prosthesis second handle body, contained angle α between the groove length direction of draw-in groove and the axle core of axostylus axostyle is 45 among the above-mentioned scheme, arrange handle prosthesis second handle body card in the draw-in groove of the proximal end of axostylus axostyle and connect together, contained angle α between the groove length direction of draw-in groove and the axle core of axostylus axostyle is 45, because contained angle between the first handle body and the second handle body is 135, that is to say, the axle core of axostylus axostyle is parallel with the length direction of first handle body, along the axle core direction application of force of axostylus axostyle, can guarantee that.
Description
Technical Field
The utility model relates to the field of orthopedic instruments for small animals, in particular to a femoral stem driver for small animals.
Background
The hip joint of small animals (such as dog, cat, etc.) is an important joint for connecting hind limbs and backbone trunk, and is composed of femoral head, acetabulum and ligament. For some small animals with femoral head necrosis, osteoarthritis, congenital or acquired hip dislocation, etc., total/half hip replacement is the first treatment. In the hip joint replacement surgery, firstly, the residual femoral head is cut off, then the stem prosthesis is placed in the medullary cavity of the femur, and due to the small size of the medullary cavity, the stem prosthesis is difficult to place only by hand, as shown in fig. 1, the stem prosthesis comprises a first stem body 1 directly inserted into the medullary cavity and a second stem body 2 used for being connected with the head prosthesis, the first stem body 1 is in a strip shape, the second stem body 2 is in a cylinder shape, and the included angle between the first stem body 1 and the second stem body is 135 degrees, if the angle of the femoral head is not well controlled, the angle of the first stem body 1 placed into the medullary cavity is deviated, so that the head prosthesis mounted at the end part of the second stem body 2 cannot be normally matched with an acetabulum or an acetabulum cup, and the later effect and the service life of the replacement prosthesis are influenced; secondly, when the stem prosthesis is placed in the medullary cavity and the bone cement is not solidified, the posture of the stem prosthesis needs to be maintained, and the stem prosthesis is inconvenient to hold by hands due to small size, so that the stem prosthesis is difficult to maintain the same posture for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a femoral stem driver for small animals which can ensure the precision of the femoral stem prosthesis embedded into the femur.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the femoral stem prosthesis impactor for the small animal comprises a shaft lever, the end part of the near end of the shaft lever is provided with a clamping groove used for being clamped on the second stem body of the stem prosthesis, and the included angle α between the groove length direction of the clamping groove and the shaft core of the shaft lever is 45 degrees.
In the above scheme, the second handle body of the handle prosthesis is clamped in the clamping groove at the proximal end of the shaft lever and connected together, the included angle α between the groove length direction of the clamping groove and the shaft core of the shaft lever is 45 degrees, because the included angle between the first handle body and the second handle body is 135 degrees, namely, the shaft core of the shaft lever is parallel to the length direction of the first handle body, the force is applied along the shaft core direction of the shaft lever, the first handle body can be guaranteed to move along the length direction, and therefore the accuracy of the angle of the first handle body placed in the medullary cavity is guaranteed.
Drawings
FIG. 1 is a schematic view of a stem prosthesis;
fig. 2 and 3 are schematic views of the present invention;
fig. 4 is a partially enlarged schematic view of fig. 2.
Detailed Description
For ease of illustration and ease of understanding, several basic directional and positional concepts are first described and defined. The proximal end is the end that first contacts the medullary cavity during operation, and the other end is the distal end.
As shown in figures 2-4, a femoral stem prosthesis driver for small animals comprises a shaft lever 11, the proximal end of the shaft lever 11 is provided with a slot 111 for being clamped on the second stem body 2 of the stem prosthesis, the included angle α between the slot length direction of the slot 111 and the axial core of the shaft lever 11 is 45 degrees, because the stem prosthesis is small, the stem prosthesis is directly taken by hand and the stem prosthesis is placed in the medullary cavity with difficulty, in the scheme, the second stem body 2 of the stem prosthesis is clamped and connected in the slot 11 at the proximal end of the shaft lever 11, the shaft lever 11 is held by hand, the included angle α between the slot length direction of the slot 111 and the axial core of the shaft lever 11 is 45 degrees, because the included angle between the first stem body 1 and the second stem body 2 is 135 degrees, namely, the axial core of the shaft lever 11 is parallel to the length direction of the first stem body 1, force is applied along the axial core direction of the shaft lever 11, the first stem body 1 can be ensured to move along the length direction, the accuracy of the angle of the placement in the first stem body 1 in the medullary cavity is ensured, the second stem prosthesis is ensured, the same as the angle of the stem prosthesis mounting, the acetabular stem prosthesis is ensured, the acetabular stem prosthesis is matched with the normal posture, the acetabular head is ensured, the acetabular prosthesis is not matched with the acetabular prosthesis, the acetabular prosthesis is ensured, the acetabular stem prosthesis.
Preferably, the notch of the locking groove 111 is arranged on the side away from the shaft rod 11, and the notch is in a closed shape. The second handle body 2 is placed from one end of the clamping groove 111, and the second handle body 2 cannot fall off from the notch due to the fact that the notch is in a closed-up shape.
Because the connecting position of the first and second handle bodies 1 and 2 is provided with a boss, in order to prevent the interference between the groove body at the proximal end of the clamping groove 111 and the boss, the proximal end of the clamping groove 111 is provided with a plane 112, and the plane 112 is perpendicular to the groove length of the clamping groove 111 and forms an included angle β of 135 degrees with the axial core of the shaft lever 11.
In order to facilitate the application of force, a handle 12 extends from the distal end of the shaft 11, the axis of the handle 12 is collinear with the axis of the shaft 11, and a recess 121 is formed on the handle body of the handle 12. In use, the thumb is pressed against the area of the recess 121 and the remaining four fingers grip the shaft of the handle 12 to apply force.
Claims (4)
1. A femoral stem prosthesis driver for a small animal is characterized by comprising a shaft lever (11), wherein a clamping groove (111) used for being clamped on a second handle body (2) of a stem prosthesis is arranged at the end part of the near end of the shaft lever (11), and an included angle α between the groove length direction of the clamping groove (111) and the shaft core of the shaft lever (11) is 45 degrees.
2. The femoral stem prosthesis impactor for small animals according to claim 1, wherein: the notch of the clamping groove (111) is arranged on one side deviating from the shaft lever (11), and the notch is in a closed shape.
3. The femoral stem prosthesis impactor for the small animal according to claim 1 or 2, wherein the proximal end of the slot (111) is provided with a flat surface (112), and the flat surface (112) is perpendicular to the slot length of the slot (111) and forms an angle β of 135 ° with the axial core of the shaft lever (11).
4. The femoral stem prosthesis impactor for small animals according to claim 1, wherein: a handle (12) extends from the far end of the shaft rod (11), the shaft core of the handle (12) is collinear with the shaft core of the shaft rod (11), and a concave part (121) is arranged on the handle body of the handle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921054677.8U CN210749677U (en) | 2019-07-08 | 2019-07-08 | Femoral stem prosthesis driver for small animal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921054677.8U CN210749677U (en) | 2019-07-08 | 2019-07-08 | Femoral stem prosthesis driver for small animal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210749677U true CN210749677U (en) | 2020-06-16 |
Family
ID=71057388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921054677.8U Active CN210749677U (en) | 2019-07-08 | 2019-07-08 | Femoral stem prosthesis driver for small animal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210749677U (en) |
-
2019
- 2019-07-08 CN CN201921054677.8U patent/CN210749677U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231211 Address after: 230088, 4th Floor, Building 3, Renhe Science and Technology Park, Intersection of Zhenxing Road and Yangqiao Road, Shushan District, Hefei City, Anhui Province Patentee after: Hefei lunshuo Technology Co.,Ltd. Address before: 230000 electromechanical Industrial Park, 767 Yulan Avenue, high tech Zone, Shushan District, Hefei City, Anhui Province Patentee before: ANHUI BLUE SMALL ANIMAL ORTHOPEDICS INSTRUMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |