CN210872254U - Positioning instrument for acetabulum cup for small animal - Google Patents
Positioning instrument for acetabulum cup for small animal Download PDFInfo
- Publication number
- CN210872254U CN210872254U CN201921061292.4U CN201921061292U CN210872254U CN 210872254 U CN210872254 U CN 210872254U CN 201921061292 U CN201921061292 U CN 201921061292U CN 210872254 U CN210872254 U CN 210872254U
- Authority
- CN
- China
- Prior art keywords
- acetabular cup
- shaft
- rod
- pressure head
- positioning instrument
- 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.)
- Active
Links
- 241001465754 Metazoa Species 0.000 title claims description 22
- 210000000588 acetabulum Anatomy 0.000 title abstract description 26
- 230000000007 visual effect Effects 0.000 claims abstract description 18
- 210000004197 pelvis Anatomy 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 210000003128 head Anatomy 0.000 description 16
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical compound CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 238000011540 hip replacement Methods 0.000 description 2
- 210000003692 ilium Anatomy 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 208000007446 Hip Dislocation Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 206010028851 Necrosis Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000034 method Methods 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
- 230000002028 premature Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
Landscapes
- Prostheses (AREA)
Abstract
The utility model aims at providing a can carry out acetabular cup location's for toy positioning instrument of acetabular cup fast accurate includes the axostylus axostyle, and the one end of axostylus axostyle is provided with the pressure head that is used for compressing tightly acetabular cup, and the pole of axostylus axostyle is gone up to be provided with a vision guide at least, and this vision guide produces the vision guide towards at least one anatomical landmark of pelvis. Firstly, the acetabular cup is sleeved on a pressure head in a specific posture, the acetabular cup and the pressure head are connected together so that the inclination and the anteversion of the acetabular cup can be adjusted by a shaft lever, after the inclination and the anteversion of the acetabular cup are adjusted in place by the guidance of a visual guide, the pressure head presses the acetabular cup and keeps the posture for a period of time, and after the acetabular cup is firmly connected in an acetabulum, the pressure head is taken out of the acetabular cup by forcibly overcoming tension force; due to the guiding effect of the visual guide piece, the inclination and anteversion of the acetabular cup can be conveniently adjusted, and the acetabular cup can be conveniently, quickly and accurately positioned.
Description
Technical Field
The utility model relates to a small animal orthopedic medical instrument, in particular to a positioning instrument for an acetabular cup in small animal hip joint replacement.
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 hip replacement surgery, precise placement of the acetabular cup is critical for the implant to function well to produce successful clinical outcomes, leading to increased risk of dislocation, premature wear of the bearing surfaces, and localized tumor-like inflammation if the acetabular cup is abnormally positioned.
The positioning of the acetabular cup is defined by the inclination and anteversion of the equatorial plane of the cup, for small animals, the included angle between the equatorial plane of the cup and the line connecting two ischial tuberosities or the line connecting two iliac wings in the pelvis is 45 degrees, but in the process of operation, the view is limited, and in addition, the size of the acetabular cup of the small animal is small, if the small animal is inclined a little bit, a great angle deviation can be caused, so a doctor often depends on a visual inspection mode to determine the position and the inclination angle of the implanted acetabular cup, and the result is easily influenced by subjective factors and is also closely related to the experience of an operator. When an inexperienced operator performs an operation, the acetabular cup is easy to exceed the safe angle range, and the placement position and the angle of the acetabular cup during the operation are determined by a simple and easy quantitative measuring tool.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can carry out the location apparatus of acetabular cup for toy of acetabular cup location fast accurate.
In order to realize the purpose, the utility model discloses a technical scheme be: an acetabular cup positioning instrument for small animals comprises a shaft, one end of the shaft is provided with a pressure head for pressing the acetabular cup, and the shaft of the shaft is provided with at least one visual guide which generates visual guidance towards at least one anatomical landmark of the pelvis.
According to the scheme, firstly, the acetabular cup is sleeved on the pressure head in a specific posture, the acetabular cup and the pressure head are connected together so that the inclination and the anteversion of the acetabular cup can be adjusted by the shaft rod, after the inclination and the anteversion of the acetabular cup are adjusted in place through the guidance of the visual guide, the pressure head presses the acetabular cup and keeps the posture for a period of time, and after the acetabular cup is tightly connected in an acetabulum, the pressure head is taken out of the acetabular cup by forcibly overcoming tension force; due to the guiding effect of the visual guide piece, the inclination and anteversion of the acetabular cup can be conveniently adjusted, and the acetabular cup can be conveniently, quickly and accurately positioned.
Drawings
FIG. 1 is a perspective view of a positioning device;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a perspective view of the shaft;
FIG. 5 is a perspective view of a straight rod;
FIG. 6 is a perspective view of the alignment cap;
fig. 7 is a perspective view of the handle.
Detailed Description
For convenience of explanation, we will first briefly introduce the acetabular cup and the pelvis of the small animal: the orientation of the acetabular cup in the acetabulum has inclination and anteversion, and for small animals such as cats and dogs, before the operation, the pelvis needs to be straightened, namely a connecting line between two ischial tuberosities or a connecting line between two iliac alar tops is positioned in the vertical direction, an included angle between a plane where the outer edge of the acetabulum is positioned and a horizontal plane is called inclination, usually 45 degrees, and an included angle between a projection of the connecting line between the ischial tuberosities and the iliac alar tops on the same side in the horizontal plane and a projection of the connecting line between two flanges of the acetabulum in the horizontal plane is called anteversion, usually 20 degrees (the inclination and anteversion values of each small animal are not completely the same but are basically the same).
An acetabular cup positioning instrument for small animals comprises a shaft 10, one end of the shaft 10 is provided with a pressure head 11 for pressing the acetabular cup, and the shaft of the shaft 10 is provided with at least one visual guide for generating visual guidance towards at least one anatomical landmark of the pelvis. Firstly, the acetabulum cup is sleeved on a pressure head 11 in a specific posture, when the acetabulum cup is not subjected to external force, the pressure head 11 expands the acetabulum cup, the acetabulum cup and the pressure head are connected together so that a shaft lever 10 can adjust the inclination and the anteversion of the acetabulum cup, after the inclination and the anteversion of the acetabulum cup are adjusted in place through the guidance of a visual guide, the pressure head 11 compresses the acetabulum cup and keeps the posture for a period of time, so that bone cement filled in the acetabulum is solidified, the acetabulum cup is tightly connected in the acetabulum, and at this time, the pressure head 11 is taken out of the acetabulum cup by. Due to the guiding effect of the visual guide piece, the inclination and anteversion of the acetabular cup can be conveniently adjusted, and the acetabular cup can be conveniently, quickly and accurately positioned.
Specifically, the visual guide comprises a straight rod 20, an included angle α between the straight rod 20 and the shaft rod 10 in the rod length direction is 45 degrees, one end of the straight rod 20 is connected with the shaft rod 10, and the other end of the straight rod is provided with a calibration cap 30 for calibrating the anteversion degree of the acetabular cup.
As the preferred scheme of the utility model, calibration cap 30 includes that the opening is towards sleeve 31 of straight-bar 20, the inner chamber cross-section of sleeve 31 is the non-circular form, non-circular form sleeve 31 constitutes circumferencial direction's spacing cooperation with the non-circular external diameter of straight-bar 20, be provided with indicator 32 on sleeve 31's the section of thick bamboo wall, indicator 32 projection in the horizontal plane and axostylus axostyle 10 contained angle β between the projection in the face of bobbin base place are 70.
Because the pelvis is divided into a left acetabulum and a right acetabulum, in order to increase the universality of the positioning instrument, four indicating rods 32 are arranged at intervals in the axial direction of the cylinder wall, two opposite indicating rods 32 are collinear to form a visual indication of the acetabulum cup on the same side, and the included angle delta between the indicating rods 32 of different side visual indications is 40 degrees. Two of the collinear indicating rods 32 are parallel to a connecting line between the left ischial tuberosity and the top of the ilium wing, and the other two collinear indicating rods 32 are parallel to a connecting line between the right ischial tuberosity and the top of the ilium wing, so that left and right sides can be marked on the indicating rods, and observation is facilitated.
In order to facilitate holding by hand, the end of the shaft lever 10 away from the pressure head 11 is detachably and coaxially connected with a handle 40, the middle section of the handle 40 is provided with an inclined insertion hole 41, and one end of the straight rod 20 is inserted into the inclined insertion hole 41 and forms detachable connection. This detachable construction also facilitates storage.
Furthermore, the pressure head 11 and the straight rod 20 are respectively arranged on two sides of the surface of the shaft rod 10 where the shaft core is located, the pressure head 11 comprises a bottom plate 11a directly connected with the shaft rod 10, an inclined plate 11b is arranged on one side edge of the bottom plate 11a far away from the end portion of the shaft rod 10, an included angle gamma between the bottom plate 11a and the inclined plate 11b is 135 degrees, a hemisphere 11c is arranged on the bottom plate 11a, and the size of the hemisphere 11c is matched with that of the acetabular cup. The hemisphere 11c is placed in the acetabulum cup to form a fixed and releasable connection, and the inclined plate 11b can abut against the acetabulum to facilitate angle control.
Further, in order to prevent the acetabulum from being damaged when the inclined plate 11b abuts against the acetabulum, the outer edges of the bottom plate 11a and the inclined plate 11b are both rounded and semicircular.
In order to facilitate manual force, the cross section of the middle shaft of the shaft 10 is non-circular, the shaft is fixedly sleeved with a gear ring 12, the end part of the shaft 10 matched with the handle 40 is provided with a positioning pin 13 and a retainer ring 14, the positioning pin 13 is inserted into a positioning groove 42 arranged at the end part of the handle 40 to form axial limiting fit, and the retainer ring 14 and the end part of the handle 40 form axial limiting fit. The structure is convenient to disassemble and assemble and easy to store.
Claims (8)
1. A positioning instrument for an acetabular cup for a small animal is characterized in that: comprises a shaft rod (10), one end of the shaft rod (10) is provided with a pressure head (11) used for pressing an acetabular cup, and at least one visual guide is arranged on the shaft body of the shaft rod (10) and generates visual guidance towards at least one anatomical landmark of pelvis.
2. The acetabular cup positioning instrument for the small animals according to claim 1, wherein the visual guide comprises a straight rod (20), an included angle α between the straight rod (20) and the rod length direction of the shaft rod (10) is 45 degrees, one end of the straight rod (20) is connected with the shaft rod (10), and the other end of the straight rod is provided with a calibration cap (30) for calibrating the anteversion of the acetabular cup.
3. The acetabular cup positioning instrument for the small animals is characterized in that the calibration cap (30) comprises a sleeve (31) with an opening facing the straight rod (20), the cross section of an inner cavity of the sleeve (31) is non-circular, the non-circular sleeve (31) and the non-circular outer diameter of the straight rod (20) form a circumferential limiting fit, an indicating rod (32) is arranged on the wall of the sleeve (31), and an included angle β formed by the projection of the indicating rod (32) in the horizontal plane and the projection of the shaft rod (10) in the plane of the bottom of the sleeve is 70 degrees.
4. The acetabular cup positioning instrument for small animals according to claim 3, wherein: four indicating rods (32) are arranged at intervals in the axial direction of the wall of the acetabular cup, two opposite indicating rods (32) form visual indication of the acetabular cup on the same side in a collinear mode, and the included angle delta between the indicating rods (32) of different side visual indications is 40 degrees.
5. The acetabular cup positioning instrument for small animals according to claim 2 or 3, wherein: the end of the shaft lever (10) far away from the pressure head (11) is detachably and coaxially connected with a handle (40), an inclined insertion hole (41) is formed in the middle section of the handle (40), and one end of the straight rod (20) is inserted into the inclined insertion hole (41) to form detachable connection.
6. The acetabular cup positioning instrument for small animals according to claim 1, wherein: the pressure head (11) and the straight rod (20) are respectively arranged on two sides of the surface of the shaft rod (10) where the shaft core is located, the pressure head (11) comprises a bottom plate (11a) directly connected with the shaft rod (10), an inclined plate (11b) is arranged on one side edge, away from the end portion of the shaft rod (10), of the bottom plate (11a), an included angle gamma between the bottom plate (11a) and the inclined plate (11b) is 135 degrees, a hemisphere (11c) is arranged on the bottom plate (11a), and the size of the hemisphere (11c) is matched with that of an acetabular cup.
7. The acetabular cup positioning instrument for small animals according to claim 6, wherein: the outer edges of the bottom plate (11a) and the inclined plate (11b) are smooth semicircular.
8. The acetabular cup positioning instrument for small animals according to claim 5, wherein: the cross section of the middle shaft of the shaft lever (10) is non-circular, a gear ring (12) is fixedly sleeved on the shaft lever, a positioning pin (13) and a retaining ring (14) are arranged at the end part of the shaft lever (10) matched with the handle (40), the positioning pin (13) is inserted into a positioning groove (42) arranged at the end part of the handle (40) to form axial limiting fit, and the retaining ring (14) and the end part of the handle (40) to form axial limiting fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061292.4U CN210872254U (en) | 2019-07-08 | 2019-07-08 | Positioning instrument for acetabulum cup for small animal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061292.4U CN210872254U (en) | 2019-07-08 | 2019-07-08 | Positioning instrument for acetabulum cup for small animal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210872254U true CN210872254U (en) | 2020-06-30 |
Family
ID=71327438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921061292.4U Active CN210872254U (en) | 2019-07-08 | 2019-07-08 | Positioning instrument for acetabulum cup for small animal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210872254U (en) |
-
2019
- 2019-07-08 CN CN201921061292.4U patent/CN210872254U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6168595B1 (en) | Modular intramedullary fixation system and insertion instrumentation | |
| US7458989B2 (en) | Intraoperative joint force measuring device, system and method | |
| US20080208348A1 (en) | Apparatus and Method for Shoulder Arthroplasty | |
| CN104644238B (en) | Reciprocating file for plastic surgery operations | |
| US9345589B2 (en) | Bone implants for orthopedic procedures and corresponding methods | |
| EP0567349A1 (en) | Modular hip prosthesis | |
| US8657829B2 (en) | Depth gauge cup impactor | |
| US20100137924A1 (en) | Tool | |
| US20150272696A1 (en) | Surgical system | |
| US20040073225A1 (en) | Modular instrument for positioning acetabular prosthetic socket | |
| CN113576662B (en) | Hip joint replacement navigation system and navigation method | |
| EP2339994A1 (en) | Positioning aid in the form of a self-affixing test hip joint socket | |
| US20230009959A1 (en) | Measuring equipment for use in connection with hip prosthesis surgery | |
| JP2021506553A (en) | Minimally invasive hip arthroplasty technology and equipment | |
| CN210872254U (en) | Positioning instrument for acetabulum cup for small animal | |
| CN213346183U (en) | Acetabular cup prosthesis driver | |
| EP2801339A1 (en) | Improved hip replacement | |
| CN211633470U (en) | Pedicle of vertebral arch opens a way and bores convenient to measure, change | |
| CN110192939A (en) | The locating apparatus of toy acetabular cup | |
| CN205514866U (en) | Medical femoral head extractor | |
| US9668760B2 (en) | Methods and systems for preparing the acetabulum to receive an acetabular component in a hip replacement surgical procedure | |
| CN212729944U (en) | Cartilage quantifier and surgical instrument set | |
| CN219921145U (en) | Acetabular reaming guide | |
| JP2014097207A (en) | Tool for measuring stem installation angle of artificial hip joint | |
| CN210749677U (en) | Femoral stem prosthesis driver for small animal |
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 |