CN221154421U - Knee joint prosthesis revision surgical instrument assembly for extension rod extraction - Google Patents
Knee joint prosthesis revision surgical instrument assembly for extension rod extraction Download PDFInfo
- Publication number
- CN221154421U CN221154421U CN202322477609.5U CN202322477609U CN221154421U CN 221154421 U CN221154421 U CN 221154421U CN 202322477609 U CN202322477609 U CN 202322477609U CN 221154421 U CN221154421 U CN 221154421U
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- Prior art keywords
- rod
- sliding
- knee joint
- limit
- bolt
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Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 24
- 238000000605 extraction Methods 0.000 title description 2
- 238000001356 surgical procedure Methods 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 description 6
- 210000002303 tibia Anatomy 0.000 description 4
- 239000002639 bone cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001227561 Valgus Species 0.000 description 1
- 241000469816 Varus Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model provides a knee joint prosthesis revision surgical instrument assembly for taking out an extension rod, which comprises a traction sleeve rod and a handheld sliding hammer, wherein the traction sleeve rod comprises a bolt clamping groove, a connecting part and a limit nut, one end of the connecting part is fixedly connected with the bolt clamping groove, the other end of the connecting part is in threaded connection with the limit nut, the handheld sliding hammer comprises a limit bolt, a sliding rod and a sliding hammer block, the limit bolt is in threaded connection with the limit nut, the limit bolt is fixedly connected with the sliding rod, and the sliding hammer block is sleeved on the sliding rod in a sliding manner. According to the utility model, the traction sleeve rod is fixedly connected with the hand-held sliding hammer by using the limit bolt and the limit nut, the fixing screw on the extension rod is pulled through the bolt clamping groove at the front end of the traction sleeve rod, and the external force is applied to the screw by the hand-held sliding hammer, so that the fixing screw can be quickly and conveniently detached, the extension rod and the knee joint prosthesis are separated, and the extension rod and the knee joint prosthesis are taken out conveniently.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to a taking-out appliance assembly for knee joint prosthesis revision surgery.
Background
After knee joint replacement surgery, the knee joint prosthesis can be loosened due to the large activity of the knee joint of a patient, high body mass index, long-term abrasion of the prosthesis or fracture around the knee joint prosthesis caused by local infection or trauma. At this time, the knee joint prosthesis which is loosened is taken out, and the bone at the distal end of the residual femur and the bone at the proximal end of the tibia are processed in a targeted way, so that a new knee joint revision prosthesis is put in again.
At present, bone cement type artificial joint prostheses are mostly selected for primary knee joint replacement in China, and the artificial joint is embedded with the bone surface of a treated patient through bone cement-polymethyl methacrylate bone cement, so that a stable and reliable fixing effect is achieved.
For patients with varus and valgus deformity, local bone defect, large body mass index and knee joint revision, the knee joint prosthesis with a tibia extension rod and/or a femur extension rod is selected in operation, the extension rod is connected with the femur condyle prosthesis and the tibia platform prosthesis by adopting screws, and bone cement is also adopted to fix the bone surface of the intramedullary cavity.
The knee joint prosthesis with the extension rod assembly is difficult to take out, and even the femoral shaft or the tibia shaft is required to be beaten reversely by windowing, so that the operation incision is required to be prolonged, and the operation wound is increased. Meanwhile, knee joint replacement surgery and knee joint revision surgery belong to intra-articular surgery, currently, tourniquets are mainly selected for operation, the upper limit of the single tourniquet use time of lower limbs is 90 minutes, the time for taking out a simple prosthesis is too long under the condition that no special taking-out instrument is available, and revision surgery is difficult to complete within one tourniquet time, so that a series of risks such as prolonged operation time, increased bleeding amount, increased operation risk, increased operation difficulty and the like are caused.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides the knee joint prosthesis revision surgery instrument component for taking out the extension rod, which has the advantages of simple structure, convenient use, good use effect, repeated use, easy installation and recovery and popularization and application.
In order to solve the technical problems, the utility model adopts the following technical scheme: the knee joint prosthesis revision surgical instrument assembly for taking out the extension rod is characterized by comprising a traction sleeve rod and a handheld sliding hammer, wherein the traction sleeve rod comprises a bolt clamping groove, a connecting part and a limit nut, one end of the connecting part is fixedly connected with the bolt clamping groove, and the other end of the connecting part is connected with the limit nut through threads.
The hand-held sliding hammer comprises a limit bolt, a slide rod and a sliding hammer block, wherein the limit bolt is in threaded connection with the limit nut, the limit bolt is connected with the limit bolt through the limit nut, so that the energy loss of an operator in the process of dialing can be reduced, the direction of the dialing force can be kept consistent with that of the extension rod, the limit bolt is fixedly connected with the slide rod, and the sliding hammer block is in sliding sleeve connection with the slide rod.
Compared with the prior art, the utility model has the following advantages:
According to the utility model, the traction sleeve rod is fixedly connected with the hand-held sliding hammer by using the limit bolt and the limit nut, the fixing screw on the extension rod is pulled through the bolt clamping groove at the front end of the traction sleeve rod, and the external force is applied to the screw by the hand-held sliding hammer, so that the fixing screw can be quickly and conveniently detached, the extension rod and the knee joint prosthesis are separated, and the extension rod and the knee joint prosthesis are taken out conveniently.
The utility model is described in further detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a front view of the present utility model.
Reference numerals illustrate:
1-a traction loop bar; 2-a hand-held slide hammer; 3-a bolt clamping groove;
4-a connection part; 5-limiting nuts; 6, a limit bolt;
7, a slide bar; 8-a sliding hammer block.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
As shown in fig. 1-2, the utility model provides a knee joint prosthesis revision surgery instrument assembly for taking out an extension rod, which comprises a traction sleeve rod 1 and a handheld sliding hammer 2, wherein the traction sleeve rod 1 comprises a bolt clamping groove 3, a connecting part 4 and a limit nut 5, one end of the connecting part 4 is fixedly connected with the bolt clamping groove 3, and the other end of the connecting part 4 is in threaded connection with the limit nut 5.
The hand-held sliding hammer 2 comprises a limit bolt 6, a sliding rod 7 and a sliding hammer block 8, wherein the limit bolt 6 is in threaded connection with the limit nut 5, the limit nut 5 is connected with the limit bolt 6, so that energy loss of an operator in a dialing process can be reduced, the direction of the dialing force can be kept consistent with that of an extension rod, the limit bolt 6 is fixedly connected with the sliding rod 7, and the sliding hammer block 8 is in sliding sleeve connection with the sliding rod 7.
In this embodiment, the diameter and height of the bolt slot 3 are of various specifications to accommodate the size of the set screw on different extension rods.
When the traction sleeve rod is used, a proper bolt clamping groove 3 is selected, the bolt clamping groove 3 is clamped into a gap between the extension rod and the fixing screw, and then the traction sleeve rod 1 is fixedly connected with the handheld sliding hammer 2 by using the limit nut 5.
The sliding hammer block 8 is stirred, and the sliding hammer block 8 generates larger instantaneous kinetic energy in the dialing process, so that the fixing screw is driven to loosen, and the fixing screw is taken out.
And after the fixing screw is taken out, taking out the femoral condyle prosthesis or the tibial plateau prosthesis, and screwing in the extension rod fixing screw with proper depth again to serve as an extension rod traction fixing stress point.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the utility model still fall within the scope of the technical solution of the utility model.
Claims (1)
1. The knee joint prosthesis revision surgery instrument assembly for taking out the extension rod is characterized by comprising a traction sleeve rod (1) and a handheld sliding hammer (2), wherein the traction sleeve rod (1) comprises a bolt clamping groove (3), a connecting part (4) and a limit nut (5), one end of the connecting part (4) is fixedly connected with the bolt clamping groove (3), and the other end of the connecting part (4) is connected with the limit nut (5) through threads;
The hand-held sliding hammer (2) comprises a limit bolt (6), a sliding rod (7) and a sliding hammer block (8), wherein the limit bolt (6) is in threaded connection with the limit nut (5), the limit bolt (6) is fixedly connected with the sliding rod (7), and the sliding hammer block (8) is in sliding fit with the sliding rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322477609.5U CN221154421U (en) | 2023-09-13 | 2023-09-13 | Knee joint prosthesis revision surgical instrument assembly for extension rod extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322477609.5U CN221154421U (en) | 2023-09-13 | 2023-09-13 | Knee joint prosthesis revision surgical instrument assembly for extension rod extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221154421U true CN221154421U (en) | 2024-06-18 |
Family
ID=91463984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322477609.5U Active CN221154421U (en) | 2023-09-13 | 2023-09-13 | Knee joint prosthesis revision surgical instrument assembly for extension rod extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221154421U (en) |
-
2023
- 2023-09-13 CN CN202322477609.5U patent/CN221154421U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |