CN211049682U - Medullary cavity reamer for small animals - Google Patents
Medullary cavity reamer for small animals Download PDFInfo
- Publication number
- CN211049682U CN211049682U CN201921061331.0U CN201921061331U CN211049682U CN 211049682 U CN211049682 U CN 211049682U CN 201921061331 U CN201921061331 U CN 201921061331U CN 211049682 U CN211049682 U CN 211049682U
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- CN
- China
- Prior art keywords
- reamer
- shaft
- medullary cavity
- reamer head
- head
- 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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- 241001465754 Metazoa Species 0.000 title description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 210000003128 head Anatomy 0.000 description 20
- 210000000988 bone and bone Anatomy 0.000 description 4
- 230000001054 cortical effect Effects 0.000 description 4
- 210000000689 upper leg Anatomy 0.000 description 4
- 210000001185 bone marrow Anatomy 0.000 description 2
- 238000011540 hip replacement Methods 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
- 210000000588 acetabulum Anatomy 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004394 hip joint Anatomy 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
- 201000008482 osteoarthritis Diseases 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model aims at providing a can guarantee medullary cavity and prosthetic matching degree's medullary cavity reamer for toy, including the axostylus axostyle, the near-end of axostylus axostyle is provided with reamer head, and reamer head's periphery profile is the taper of radius crescent by the near-end to the distal end. In the scheme, the outer contour of the reamer head is in a conical shape with the radius gradually increasing from the proximal end to the distal end, so that the conical reamer head can better adapt to the physiological radian in the medullary cavity, and meanwhile, the conical reamer head can be inserted into the medullary cavity more smoothly, so that the efficiency of reaming the medullary cavity is improved, and the operation time is saved.
Description
Technical Field
The utility model relates to an apparatus field of toy, concretely relates to reamer for enlarging pulp cavity.
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 replacement operation, the stem prosthesis of the femoral head frame body needs to be inserted into the medullary cavity, and the medullary cavity is filled with bone marrow, so that the stem prosthesis cannot be directly inserted into the medullary cavity, and the medullary cavity needs to be expanded, namely the diameter of the medullary cavity is expanded along the physiological curvature of the medullary cavity, so that the stem prosthesis can be matched with the expanded medullary cavity.
In the prior art, a reamer head of a reamer for a medullary cavity of a small animal is arranged from the end of the proximal end (the end where the reamer is firstly contacted with the medullary cavity) of the reamer and then extends towards the distal end, and the outer profile of the reamer head is cylindrical or spherical. Taking the femur of a small animal as an example, the longitudinal section of the medullary cavity inside the femur is conical, and if the femur is reamed by adopting the existing medullary cavity reamer for the small animal, the medullary cavity is not matched with the prosthesis when the prosthesis is installed, so that the stability of the fixation of the prosthesis is influenced to a certain extent; in addition, if the medullary cavity is deeper during reaming, the cylindrical reamer head with a larger size can cause the far end of the stem prosthesis not to be attached to the medullary cavity, and even possibly damage the cortical bone at the far end of the femur, while the cylindrical reamer head with a smaller size can cause more labor during mounting of the stem prosthesis, and even possibly crack the cortical bone, thereby causing serious consequences.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a little animal that can guarantee the matching degree of pulp cavity and false body is with pulp cavity reamer.
In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a marrow cavity reamer for toy, includes the axostylus axostyle, and the near-end of axostylus axostyle is provided with the reamer head, and the peripheral profile of reamer head is the taper shape that the radius increases gradually from the near-end to the distal end.
In the scheme, the outer contour of the reamer head is in a conical shape with the radius gradually increasing from the proximal end to the distal end, so that the conical reamer head can better adapt to the physiological radian in the medullary cavity, and meanwhile, the conical reamer head can be inserted into the medullary cavity more smoothly, so that the efficiency of reaming the medullary cavity is improved, and the operation time is saved.
Drawings
FIG. 1 is a perspective view of a medullary cavity reamer for small animals;
fig. 2 is a partially enlarged schematic view of fig. 1.
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.
A medullary cavity reamer for small animals comprises a shaft rod 10, a reamer head 11 is arranged at the near end of the shaft rod 10, and the peripheral outline of the reamer head 11 is in a conical shape with the radius gradually increasing from the near end to the far end. Because the external profile of the reamer head 11 is tapered with the radius gradually increasing from the proximal end to the distal end, the tapered reamer head 11 can better adapt to the physiological curvature in the medullary cavity, and meanwhile, the tapered reamer head 11 can be inserted into the medullary cavity more smoothly, thereby improving the efficiency of reaming the medullary cavity and saving the operation time.
In order to prevent the far cortical bone from being damaged when the medullary cavity is deeper during reaming, the proximal end of the reamer head 11 is extended with a post 12, the diameter of the post 12 is matched with that of the proximal end of the reamer head 11, and the end of the post 12 is hemispherical. The pole 12 has a small diameter and a smooth outer peripheral surface, and does not damage cortical bone.
Further, the reamer head 11 is composed of reamer units 111 evenly spaced along the circumference of the shaft core of the shaft 10, and the radial width of the reamer units 111 gradually increases in the direction toward the distal end of the shaft 10. The reamer units 111 provide a passage between them through which bone marrow and blood can flow.
Further, the reamer unit 111 is in a shape of a strip, a plurality of gaps a are formed on the edge of the outer side plate of the strip at intervals along the length direction of the strip, and the cross section of each gap a is semicircular.
For a reliable connection with the drive member, the distal end of the shaft 10 is provided with a drive shaft 13 for connection with the drive member, the drive shaft 13 having a polygonal cross-section. The driving component is used for driving the shaft lever 10 to rotate, and the reaming efficiency is improved.
Further, the shaft of the shaft 10 is provided with a recess 14.
Claims (5)
1. The utility model provides a marrow cavity reamer for toy which characterized in that: the reamer comprises a shaft lever (10), wherein a reamer head (11) is arranged at the near end of the shaft lever (10), and the peripheral outline of the reamer head (11) is in a conical shape with the radius gradually increasing from the near end to the far end;
the proximal end of the reamer head (11) is provided with a post rod (12) in an extending mode, the diameter of the post rod (12) is matched with that of the proximal end of the reamer head (11), and the end of the post rod (12) is hemispherical.
2. The intramedullary reamer of claim 1, wherein: the reamer head (11) is composed of reamer units (111) which are uniformly arranged along the circumferential direction of the shaft core of the shaft rod (10) at intervals, and the radial width of the reamer units (111) is gradually increased in the direction towards the far end of the shaft rod (10).
3. The intramedullary reamer of claim 2, wherein: the reamer unit (111) is in a strip plate shape, a plurality of gaps (a) are arranged on the edge of the outer side plate of the strip plate at intervals along the length direction of the strip plate, and the cross section of each gap (a) is semicircular.
4. The intramedullary reamer of claim 2, wherein: the distal end of the shaft lever (10) is provided with a driving shaft (13) used for being connected with a driving part, and the section of the driving shaft (13) is polygonal.
5. The intramedullary reamer of claim 4, wherein: a recess (14) is provided on the shaft of the shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061331.0U CN211049682U (en) | 2019-07-08 | 2019-07-08 | Medullary cavity reamer for small animals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061331.0U CN211049682U (en) | 2019-07-08 | 2019-07-08 | Medullary cavity reamer for small animals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211049682U true CN211049682U (en) | 2020-07-21 |
Family
ID=71581248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921061331.0U Active CN211049682U (en) | 2019-07-08 | 2019-07-08 | Medullary cavity reamer for small animals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211049682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112716562A (en) * | 2020-12-07 | 2021-04-30 | 迪恩医疗科技有限公司 | Medullary cavity reaming device matched with intramedullary nail anatomy |
-
2019
- 2019-07-08 CN CN201921061331.0U patent/CN211049682U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112716562A (en) * | 2020-12-07 | 2021-04-30 | 迪恩医疗科技有限公司 | Medullary cavity reaming device matched with intramedullary nail anatomy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231130 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. |