CN215739250U - Knee joint replacement osteotomy tool - Google Patents
Knee joint replacement osteotomy tool Download PDFInfo
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- CN215739250U CN215739250U CN202120175483.4U CN202120175483U CN215739250U CN 215739250 U CN215739250 U CN 215739250U CN 202120175483 U CN202120175483 U CN 202120175483U CN 215739250 U CN215739250 U CN 215739250U
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- Prior art keywords
- tool
- handle
- scale
- fan
- cutter
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 31
- 238000013150 knee replacement Methods 0.000 claims description 11
- 239000003086 colorant Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims 1
- 210000000426 patellar ligament Anatomy 0.000 abstract description 6
- 210000001699 lower leg Anatomy 0.000 description 13
- 210000000988 bone and bone Anatomy 0.000 description 6
- 210000003041 ligament Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 201000008482 osteoarthritis Diseases 0.000 description 3
- 210000002303 tibia Anatomy 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000011883 total knee arthroplasty Methods 0.000 description 1
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Abstract
The embodiment of the utility model discloses a knee joint replacement osteotomy tool, which comprises a tool body and a tool handle, wherein the tool body is of a fan-shaped structure, the tool handle and the tool body are integrally formed, cutting edges are distributed on the edge of the fan-shaped structure of the tool body, and a scale used for marking the distance from the cutting edges to the tool handle is arranged on the tool handle. Through the cutter body that sets up fan-shaped structure, set up the cutting edge at the edge of fan-shaped structure of cutter body to and set up the scale that is used for mark cutting edge to handle of a knife distance on the handle of a knife, compare in current rectangular type knee joint replacement osteotomy cutter, the structure of fan-shaped cutter body makes the length size of cutter obviously reduce, can cut in the space at tibial plateau, patellar tendon and ligament place more nimble, the setting up of scale makes the user can refer to the scale and accurately control the depth of cut of cutter on the handle of a knife simultaneously.
Description
Technical Field
The utility model relates to the technical field of osteotomy tools, in particular to a knee joint replacement osteotomy tool.
Background
Osteoarthritis (OA) is a degenerative disease of the joints that seriously affects the quality of life of patients, and the progression of the disease to the end stage knee osteoarthritis can only be solved by artificial joint replacement by total knee arthroplasty.
In the total knee joint replacement, the tibial plateau surface is cut off through the swing saw, the two sides of the tibial plateau surface are blocked by the patellar tendon, the ligament and the like, and the long-strip swing saw cannot rapidly and effectively cut off the two side bone surfaces.
SUMMERY OF THE UTILITY MODEL
In view of the above, the object of the present invention is: provides a knee joint replacement osteotomy tool which occupies small space and is convenient to use.
In order to achieve one or part or all of the purposes or other purposes, the utility model provides a knee joint replacement osteotomy tool, which comprises a tool body and a tool handle, wherein the tool body is of a fan-shaped structure, the tool handle and the tool body are integrally formed, cutting edges are distributed on the edge of the fan-shaped structure of the tool body, and a ruler for marking the distance from the cutting edges to the tool handle is arranged on the tool handle.
Optionally, the tool shank is located at a short side of the blade body of the fan-shaped structure.
Optionally, the tool holder is a long sheet structure.
Optionally, an installation part for fixedly connecting the knife handle is further arranged at one end, far away from the knife body, of the knife handle.
Optionally, the mounting portion is a through hole.
Optionally, the periphery of the mounting portion is further provided with a positioning portion, and the positioning portion is used for limiting the movement range of the tool shank.
Optionally, the scale is a depressed structure or a raised structure.
Optionally, adjacent scales on the scale are marked with different colors, or adjacent scales on the scale are marked with different colors.
Optionally, the graduation marks on the scale are continuously and/or intermittently arranged.
The implementation of the utility model has the following beneficial effects:
set up the cutter body of fan-shaped structure, the edge at the fan-shaped structure of cutter body sets up the cutting edge to and set up the scale that is used for marking cutting edge to handle of a knife distance on the handle of a knife, compare in current rectangular type knee joint replacement osteotomy cutter, the cutter body of fan-shaped structure makes the length and size of cutter reduce to some extent, increase cutting area simultaneously, can cut in the space that tibial plateau, patellar tendon, ligament were located more nimble, the setting up of scale makes the user can refer to the scale and accurately control the depth of cutting of cutter on the handle of a knife simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of one embodiment of a knee replacement osteotomy tool of the present invention;
FIG. 2 is a schematic view of a second embodiment of the knee replacement osteotomy tool of the present invention;
FIG. 3 is a schematic view of a third embodiment of the knee replacement osteotomy tool of the present invention;
FIG. 4 is a schematic view of a portion of a knee joint;
fig. 5 is an enlarged view at a in fig. 4.
In the figure: 1, a cutter body; 11-a blade edge; 2-a knife handle; 21-a scale; 211-graduation marks; 2111-continuous scale line; 2112-interrupted scale lines; 212-indicating a number; 22-a mounting portion; 23-a positioning section; 3-femur; 4-tibia; 41-tibial plateau; 5-ligament; 6-Bin tendon.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as according to the upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement, etc. of the components in a specific posture (according to the figure), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a knee joint replacement osteotomy tool, which is characterized in that a fan-shaped tool body is arranged, a cutting edge is arranged at the edge of a fan-shaped structure of the tool body, and a scale is arranged on a tool shank, so that the tool which can flexibly cut in a narrow space of a knee joint and can accurately control the cutting depth by referring to the scale is formed.
Fig. 1 is a schematic view of an embodiment of a knee joint replacement osteotomy tool according to the present invention, and referring to fig. 1, the knee joint replacement osteotomy tool includes a tool body 1 and a tool shank 2, the tool body 1 is integrally formed into a fan-shaped structure, the tool shank 2 and the tool body 1 are integrally formed into a structure, and a cutting edge 11 is distributed at an edge of the fan-shaped structure of the tool body 1, compared with a long knee joint replacement osteotomy tool, the tool body of the fan-shaped structure has a smaller length and a smaller size, and a larger cutting area, so as to be conveniently and flexibly operated in a complex and narrow working environment, and a scale for marking a distance from the cutting edge 11 to the tool shank 2 is disposed on the tool shank 2, so that an operator can accurately control a cutting depth of the tool with reference to the scale 21 on the tool shank 2 when using the tool to perform a cutting operation, thereby ensuring reliability of the tool in the cutting operation process. It will be readily appreciated that the tool in embodiments of the present invention may be a saw blade during a particular application.
Optionally, the tool shank 2 is located at the short side of the fan-shaped structure of the tool body 1, so that the overall structure of the tool is compact and reasonable. More specifically, the tool shank 2 is positioned on the side of the tool body 1 with the shorter arc length of the fan-shaped structure.
Optionally, the cutter body 1 and the cutter handle 2 are integrally of a sheet structure, so that on the premise of ensuring the strength of the cutter, the thickness of a material to be removed in the process of cutting the bone is less, and the cutting thickness of the cutter is controlled to a certain extent.
Optionally, the tool holder 2 is a long sheet structure, so that after the tool is cut into a certain depth, the tool holder does not occupy too much space, and meanwhile, the weight of the tool can be reduced, thereby facilitating the osteotomy operation of the tool in a narrow and complex environment.
Optionally, an installation portion 22 for fixedly connecting the tool shank 2 is further disposed at one end of the tool shank 2, which is far away from the tool body, and the installation portion 22 may be a through hole or a clamping groove structure, so that the tool shank 2 is conveniently connected with a cutting device. In particular, the cutting device may be an oscillating saw, the mounting portion 22 being the centre of rotation of the tool.
Optionally, a positioning portion 23 is further provided on the periphery of the mounting portion 22, and the positioning portion 23 is used for limiting the movement range of the tool holder 2. Specifically, the positioning portion 23 is a positioning slot, which facilitates quick positioning and installation of the cutter.
Fig. 2 is a schematic diagram of a second embodiment of the knee joint replacement osteotomy tool according to the present invention, and referring to fig. 2, the second embodiment is different from the first embodiment in that the scale 21 includes a graduation line 211 and an indication number 212, and during the cutting process of the tool, a user can accurately identify the cutting depth of the tool by observing the position of the cut left by the tool sawing on the graduation line 211 and the indication number 212, so as to ensure the safety and reliability of the cutting of the tool. Alternatively, the scale 21 is a sunken groove structure, and may also be a boss of a convex structure. The other structures of the second embodiment are the same as those of the first embodiment, and are not described in detail.
Fig. 3 is a schematic view of a third embodiment of the knee joint replacement osteotomy tool of the present invention, and referring to fig. 3, the third embodiment differs from the second embodiment in that the graduation mark 211 on the scale 21 is a continuous graduation mark 2111 and a discontinuous graduation mark 2112, which are continuously arranged, so that an operator can conveniently distinguish the graduation mark 211 during use, and the user can rapidly identify the depth of the tool cut.
Alternatively, adjacent graduation marks 211 are marked with different colors, or adjacent graduations on the scale 21 are marked with different colors. In one embodiment, the graduation mark 211 is marked with red, yellow, green, blue and black colors, so that the operator can quickly identify the graduation mark 211 during the process of osteotomy to know the cutting depth of the tool, thereby avoiding the over-truncation.
Fig. 4 is a schematic view showing a structure of a knee joint, fig. 5 is an enlarged view of a portion a in fig. 4, and referring to fig. 4 and 5, the structure of the knee joint includes a femur 3 and a tibia 4, a ligament 5 and a patella tendon 6 are connected between the femur 3 and the tibia 4, and in the process of performing total knee replacement, a tibial platform 41 needs to be cut off, and both side bone surfaces of the femur 3 cannot be cut off quickly and effectively by using a long pendulum saw, which is blocked by the ligament 5 and the patella tendon 6. The knee joint replacement osteotome fan-shaped cutter body with the fan-shaped cutter body can enlarge the moving range of the cutter by swinging left and right to increase operability, so that ligaments 5 are avoided, bone surfaces needing to be removed on the knee joint can be quickly and efficiently removed, and compared with a long-strip-shaped osteotome, the cutter with the fan-shaped cutter body has a larger cutting area, and meanwhile, the length of the cutter can be obviously smaller than that of the long-strip-shaped osteotome, so that the cutter with the fan-shaped cutter body can quickly and efficiently carry out osteotomy operation in a knee joint area.
The utility model relates to a use method of a knee joint replacement osteotomy tool, which comprises the following steps: and (3) installing the cutter on a swing saw, comparing the position of the posterior fork bone island on the surface of the tibia platform before sawing, and measuring the distance to record the scale mark corresponding to the depth. And after the saw cutting of the swing saw is finished, stopping the swing saw at the position corresponding to the line in time, and ending the bone cutting.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The knee joint replacement osteotomy tool is characterized by comprising a tool body and a tool handle, wherein the tool body is of a fan-shaped structure, the tool handle and the tool body are integrally formed, cutting edges are distributed at the edge of the fan-shaped structure of the tool body, and a scale used for marking the distance from the cutting edges to the tool handle is arranged on the tool handle.
2. The knee replacement osteotomy tool of claim 1, wherein said shank is located at a short side of said fan-shaped structure's body.
3. The knee replacement osteotomy tool of claim 1 or 2, wherein said tool body and said shank are integrally of a sheet-like construction.
4. The knee replacement osteotomy tool of claim 3, wherein said shank is an elongated sheet-like structure.
5. The knee joint replacement osteotomy tool of claim 3, wherein an attachment portion for fixedly attaching the tool handle is further provided at an end of the tool handle distal from the tool body.
6. The knee replacement osteotomy tool of claim 5, wherein said mounting portion is a through hole.
7. The knee joint replacement osteotomy tool of claim 5 or 6, wherein a positioning portion is further provided around the mounting portion, the positioning portion being configured to limit a range of motion of the handle.
8. The knee replacement osteotomy tool of claim 1, wherein said scale is a sunken or raised structure.
9. The knee replacement osteotomy tool of claim 8, wherein adjacent graduations on said scale are marked with different colors, or adjacent graduations on the scale are marked with different colors.
10. The knee replacement osteotomy tool of claim 1, wherein said scale markings are continuously and/or intermittently disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120175483.4U CN215739250U (en) | 2021-01-21 | 2021-01-21 | Knee joint replacement osteotomy tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120175483.4U CN215739250U (en) | 2021-01-21 | 2021-01-21 | Knee joint replacement osteotomy tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215739250U true CN215739250U (en) | 2022-02-08 |
Family
ID=80071497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120175483.4U Expired - Fee Related CN215739250U (en) | 2021-01-21 | 2021-01-21 | Knee joint replacement osteotomy tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215739250U (en) |
-
2021
- 2021-01-21 CN CN202120175483.4U patent/CN215739250U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20220208 |