CN110623721A - Orthopaedic instrument for separating and taking out tibial plateau prosthesis - Google Patents
Orthopaedic instrument for separating and taking out tibial plateau prosthesis Download PDFInfo
- Publication number
- CN110623721A CN110623721A CN201910887240.0A CN201910887240A CN110623721A CN 110623721 A CN110623721 A CN 110623721A CN 201910887240 A CN201910887240 A CN 201910887240A CN 110623721 A CN110623721 A CN 110623721A
- Authority
- CN
- China
- Prior art keywords
- tibial plateau
- plateau prosthesis
- blade head
- main body
- interface
- 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.)
- Pending
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 24
- 230000000399 orthopedic effect Effects 0.000 claims abstract description 15
- 230000007423 decrease Effects 0.000 claims description 3
- 210000003127 knee Anatomy 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 210000002303 tibia Anatomy 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000013150 knee replacement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Transplantation (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physical Education & Sports Medicine (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention provides an orthopedic instrument for separating and taking out a tibial plateau prosthesis, which comprises a main body and a blade head extending out of one end of the main body, wherein the blade head is used for being embedded into a joint surface of the tibial plateau prosthesis and a natural bone, one side of the main body, which is the same as the blade head and is opposite to the blade head, is provided with a first interface, the first interface is used for connecting a universal handle, the tibial plateau prosthesis is separated from the natural bone by knocking the tail part of the universal handle, the other end of the main body is provided with a second interface, the second interface is used for connecting a sliding hammer, and the tibial plateau prosthesis is pulled out by using the pulling force of the sliding hammer. The invention combines the functions of separating and taking out the tibial plateau prosthesis into a whole, has simple and quick operation and greatly improves the efficiency of separating and taking out the tibial plateau prosthesis. Moreover, the invention is applicable to the conventional tibial plateau prosthesis at present and has the advantage of strong universality.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an orthopedic instrument for separating and taking out a tibial plateau prosthesis.
Background
The knee joint is the largest and most complex joint in the human body, and knee replacement refers to a way of replacing all or part of a damaged natural knee joint with a knee prosthesis. Knee prostheses used in knee replacement procedures often have a long life and often require revision after the prosthesis is damaged or loosened.
Knee revision is the removal and replacement of a worn or loosened knee prosthesis with a new knee prosthesis. In this process, a critical step is to separate the old knee prosthesis from the natural bone and remove it.
At present, chiseling separation is mainly carried out on the joint of the tibial plateau prosthesis and the natural bone by using tools with edges such as scalpels and the like, then the tools such as scalpels and the like are inserted into the separation surface, and the tibial plateau prosthesis is pried and taken out by taking the natural bone side as a fulcrum. The method is usually time-consuming and labor-consuming in actual operation due to the influence of factors such as the size, thickness and the like of the osteotome, and the damage to the natural bone on the tibia side is easily caused by the prying mode.
In addition, some existing tibial plateau prosthesis extractors lock a tibial plateau in a manner of clamping the edge of the tibial plateau or anchoring the central hole of the tibial plateau, and use a hammer to knock a handle upwards to extract the tibial plateau. The tool is usually strong in special use, poor in universality and specific in requirement on the structure of a tibial plateau, and generally can be used only after a tibial pad is separated.
Therefore, the tools in the prior art have the problems of complex structure, high cost and poor universality, and other cutting tools are needed to separate the tibial plateau from the natural bone, so the actual operation steps are complicated.
Disclosure of Invention
The invention aims to provide an orthopedic instrument for separating and taking out a tibial plateau prosthesis, which overcomes the defects of complex structure, high processing cost, poor universality of a locking structure and the like in the prior art so as to be convenient for easily separating and taking out the tibial plateau prosthesis from natural bones.
In order to solve the technical problems, an embodiment of the invention provides an orthopedic instrument for separating and taking out a tibial plateau prosthesis, which comprises a main body and a blade head extending out of one end of the main body, wherein the blade head is used for being embedded into a combined surface of the tibial plateau prosthesis and a natural bone, a first interface is arranged on one side of the main body, which is the same as the blade head and opposite to the blade head, the first interface is used for connecting a universal handle, the tibial plateau prosthesis is separated from the natural bone by knocking the tail part of the universal handle, a second interface is arranged at the other end of the main body, the second interface is used for connecting a sliding hammer, and the tibial plateau prosthesis is pulled out by using the pulling force of the sliding hammer.
Preferably, the main body is a cylindrical body, the blade head and the first interface are located at one end of the cylindrical body, the second interface is located at the other end of the cylindrical body, and the first interface and the blade head are located on two opposite sides of the cylindrical body respectively.
Preferably, the middle portion of the body has a circular through hole penetrating the body.
Preferably, the blade head is in the shape of a V-wedge, the thickness of which gradually decreases from the end close to the main body to the end far from the main body.
Preferably, the first interface is for setting up the first open slot of main part one end, first open slot is the rectangle recess, the inner wall of first open slot be provided with general handle matched with fastening structure is used for connecting general handle.
Preferably, the second port is a second open slot disposed at the other end of the main body, the second open slot is a rectangular groove, and the second open slot is used for detachably connecting with a head part of the sliding hammer.
The technical scheme of the invention has the following beneficial effects:
the invention provides an orthopedic instrument which is simple to operate and can conveniently and quickly separate and take out a tibial plateau prosthesis from a natural bone, solves the problems of complex structure, high processing cost and poor universality of a locking structure in the prior art, integrates the functions of separating and taking out the tibial plateau prosthesis into a whole, improves the efficiency of separating and taking out the tibial plateau prosthesis, and is suitable for the conventional tibial plateau prosthesis at present.
Drawings
FIG. 1 is a schematic structural diagram of an orthopaedic instrument for the isolation of a tibial plateau prosthesis provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of an orthopaedic instrument for the separate extraction of a tibial plateau prosthesis to a universal handle according to an embodiment of the present invention;
fig. 3 is a schematic view of the connection of an orthopaedic instrument for the isolation of a tibial plateau prosthesis to a sliding hammer according to an embodiment of the present invention.
In the figure: 1-orthopaedic instrument, 101-main body, 102-cutting head, 103-first interface, 104-second interface, 2-natural bone, 3-tibial plateau prosthesis, 4-tibial pad, 5-universal handle, 6-sliding hammer.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
An embodiment of the present invention provides an orthopaedic instrument for the separation and extraction of a tibial plateau prosthesis, as shown in fig. 1-3, the orthopaedic instrument 1 comprises a main body 101 and a blade 102 extending from one end of the main body 101, the blade 102 is used for being inserted into the junction surface of the tibial plateau prosthesis 3 and the natural bone 2 (reference numeral 4 in fig. 2 and 3 denotes a tibial pad), the main body 101 has a first interface 103 at the same end as the blade 102 and at the opposite side of the blade 102, the first interface 103 is used for connecting a universal handle 5, the tibial plateau prosthesis 3 is separated from the natural bone 2 by striking the tail of the universal handle 5, the other end of the main body 101 has a second interface 104, and the second interface 104 is used for connecting a sliding hammer 6, and the tibial plateau prosthesis 3 is extracted by the pulling force of the sliding hammer 6.
The orthopedic instrument provided by the embodiment of the invention can conveniently and quickly separate and take out the tibial plateau prosthesis from the natural bone, overcomes the problems of complex structure, high processing cost and poor universality of a locking structure in the prior art, integrates the functions of separating and taking out the tibial plateau prosthesis into a whole, improves the efficiency of separating and taking out the tibial plateau prosthesis, and is suitable for the conventional tibial plateau prosthesis at present.
Further, as an embodiment of the present invention, the main body 101 is a cylindrical body, for example: the blade head 102 and the first interface 103 are positioned at one end of the cylindrical body, the second interface 104 is positioned at the other end of the cylindrical body, and the first interface 103 and the blade head 102 are respectively positioned at two opposite sides of the cylindrical body.
Further, the middle portion of the body 101 has a circular through hole penetrating the body 101. The design is to reduce the total weight of the instrument, so that the instrument is lighter and easier to carry.
Further, as an embodiment of the present invention, the blade head 102 has a V-wedge shape, and the thickness thereof gradually decreases from the end close to the body 101 to the end far from the body 101. The V-shaped wedge structure enables the blade head 102 to be smoothly embedded into the joint surface of the tibial plateau prosthesis 3 and the natural bone 2, and is beneficial to the smooth separation process.
Further, the first interface 103 is a first opening groove disposed at one end of the main body 101, the first opening groove is preferably a rectangular groove, and a fastening structure matched with the universal handle 5 is disposed on an inner wall of the first opening groove and used for connecting the universal handle 5.
When the tibia plateau prosthesis is used, the front end of the universal handle 5 extends into the first interface 103 and is connected with the first interface 103, and then the tail of the universal handle 5 is knocked to separate the tibia plateau prosthesis 3 from the natural bone 2.
Further, the second port 104 is a second opening groove, preferably a rectangular groove, provided at the other end of the main body 101, and the second opening groove is used for detachably connecting with the head part of the sliding hammer 6.
The head part of the sliding hammer 6 can be a hook or a triangular gasket and can be fixedly connected with the second interface 104, and when the sliding body on the sliding hammer 6 slides from bottom to top repeatedly, the sliding body impacts the tail part of the sliding hammer 6 and drives the orthopedic instrument to impact upwards, so that the tibial plateau prosthesis 3 and the natural bone 2 are completely separated and pulled out.
The orthopedic instrument provided by the invention is used as follows:
embedding the blade head into the joint surface between the tibial plateau prosthesis and the natural bone, connecting a general handle at a first interface, knocking the tail of the connected general handle by using an iron hammer, and driving the blade head into the joint surface between the tibial plateau prosthesis and the natural bone, so that the joint surfaces are all separated along the periphery of the tibial plateau in sequence;
and then the universal handle connected with the first interface is taken down, the sliding hammer is connected with the second interface, the blade head is embedded into the joint surface of the tibial plateau prosthesis and the natural bone, the sliding body on the sliding hammer is forcibly slid from bottom to top, the sliding body impacts the tail part of the sliding hammer to drive the orthopedic instrument to impact upwards, and the operation is repeatedly carried out at a plurality of joint surfaces so as to completely separate and pull out the tibial plateau prosthesis and the natural bone.
The invention combines the functions of separating and taking out the tibial plateau prosthesis into a whole, has simple and quick operation, greatly improves the efficiency of separating and taking out the tibial plateau prosthesis, is suitable for the conventional tibial plateau prosthesis at present and has the advantage of strong universality.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The orthopedic instrument for separating and taking out the tibial plateau prosthesis is characterized by comprising a main body and a blade head extending out of one end of the main body, wherein the blade head is used for being embedded into a joint surface of the tibial plateau prosthesis and a natural bone, a first interface is arranged on one side, opposite to the blade head, of the same end of the main body as the blade head and used for being connected with a universal handle, the tibial plateau prosthesis is separated from the natural bone by knocking the tail of the universal handle, a second interface is arranged at the other end of the main body and used for being connected with a sliding hammer, and the tibial plateau prosthesis is pulled out by using the pulling force of the sliding hammer.
2. The orthopedic instrument of claim 1, wherein said body is a cylindrical body, said blade head and said first port are located at one end of said cylindrical body, said second port is located at the other end of said cylindrical body, and said first port and said blade head are located on opposite sides of said cylindrical body.
3. The orthopedic instrument of claim 2, wherein the middle portion of the body has a circular through hole therethrough.
4. The orthopedic instrument of claim 1, wherein said blade head is in the shape of a V-wedge having a thickness that decreases from an end proximal to said body to an end distal to said body.
5. The orthopedic instrument according to claim 1, wherein the first interface is a first open slot disposed at one end of the main body, the first open slot is a rectangular groove, and a fastening structure matched with the universal handle is disposed on an inner wall of the first open slot for connecting the universal handle.
6. The orthopedic instrument of claim 1, wherein the second port is a second open slot disposed at another end of the body, the second open slot being a rectangular recess for detachable connection with the head member of the sliding hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910887240.0A CN110623721A (en) | 2019-09-19 | 2019-09-19 | Orthopaedic instrument for separating and taking out tibial plateau prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910887240.0A CN110623721A (en) | 2019-09-19 | 2019-09-19 | Orthopaedic instrument for separating and taking out tibial plateau prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110623721A true CN110623721A (en) | 2019-12-31 |
Family
ID=68971847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910887240.0A Pending CN110623721A (en) | 2019-09-19 | 2019-09-19 | Orthopaedic instrument for separating and taking out tibial plateau prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110623721A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971963A (en) * | 2021-02-05 | 2021-06-18 | 山东大学齐鲁医院(青岛) | Tibial plateau removing device |
| CN114712042A (en) * | 2022-06-10 | 2022-07-08 | 北京爱康宜诚医疗器材有限公司 | Lock clip extractor |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4459985A (en) * | 1983-03-04 | 1984-07-17 | Howmedica Inc. | Tibial prosthesis extractor and method for extracting a tibial implant |
| US4686971A (en) * | 1984-11-19 | 1987-08-18 | Harris William H | Method and apparatus for extraction of prostheses |
| US5713906A (en) * | 1993-05-15 | 1998-02-03 | Ueth & Haug Gmbh | Endoprosthesis cutting-off device |
| US5788701A (en) * | 1995-12-21 | 1998-08-04 | Johnson & Johnson Professional, Inc. | Instrument system for knee prothesis implantation with universal handle or slap hammer |
| US20040097929A1 (en) * | 1998-10-28 | 2004-05-20 | Branch Charles L. | Interbody fusion grafts and instrumentation |
| WO2007098549A1 (en) * | 2006-03-03 | 2007-09-07 | Portland Orthopaedics Limited | Multi function hammer |
| CN101106958A (en) * | 2004-09-23 | 2008-01-16 | 思派英系统公司 | System and method for an intervetebral implant |
| US20120004664A1 (en) * | 2010-04-05 | 2012-01-05 | Ross Paul And Associates Ltd. | Medical implant extraction device |
| CN102892387A (en) * | 2010-03-16 | 2013-01-23 | 品尼高脊柱集团有限责任公司 | Intervertebral implants and graft delivery systems and methods |
| CN202726865U (en) * | 2012-09-03 | 2013-02-13 | 江苏舜天国际集团苏迈克斯工具有限公司 | Quick-assembling/disassembling chisel |
| CN103637837A (en) * | 2012-06-29 | 2014-03-19 | 德普伊(爱尔兰)有限公司 | Surgical instrument and method of disassembling a tibial prosthesis |
| CN211213465U (en) * | 2019-09-19 | 2020-08-11 | 北京力达康科技有限公司 | Orthopaedic instrument for separating and taking out tibial plateau prosthesis |
-
2019
- 2019-09-19 CN CN201910887240.0A patent/CN110623721A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4459985A (en) * | 1983-03-04 | 1984-07-17 | Howmedica Inc. | Tibial prosthesis extractor and method for extracting a tibial implant |
| US4686971A (en) * | 1984-11-19 | 1987-08-18 | Harris William H | Method and apparatus for extraction of prostheses |
| US5713906A (en) * | 1993-05-15 | 1998-02-03 | Ueth & Haug Gmbh | Endoprosthesis cutting-off device |
| US5788701A (en) * | 1995-12-21 | 1998-08-04 | Johnson & Johnson Professional, Inc. | Instrument system for knee prothesis implantation with universal handle or slap hammer |
| US20040097929A1 (en) * | 1998-10-28 | 2004-05-20 | Branch Charles L. | Interbody fusion grafts and instrumentation |
| CN101106958A (en) * | 2004-09-23 | 2008-01-16 | 思派英系统公司 | System and method for an intervetebral implant |
| WO2007098549A1 (en) * | 2006-03-03 | 2007-09-07 | Portland Orthopaedics Limited | Multi function hammer |
| CN102892387A (en) * | 2010-03-16 | 2013-01-23 | 品尼高脊柱集团有限责任公司 | Intervertebral implants and graft delivery systems and methods |
| US20120004664A1 (en) * | 2010-04-05 | 2012-01-05 | Ross Paul And Associates Ltd. | Medical implant extraction device |
| CN103637837A (en) * | 2012-06-29 | 2014-03-19 | 德普伊(爱尔兰)有限公司 | Surgical instrument and method of disassembling a tibial prosthesis |
| CN202726865U (en) * | 2012-09-03 | 2013-02-13 | 江苏舜天国际集团苏迈克斯工具有限公司 | Quick-assembling/disassembling chisel |
| CN211213465U (en) * | 2019-09-19 | 2020-08-11 | 北京力达康科技有限公司 | Orthopaedic instrument for separating and taking out tibial plateau prosthesis |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971963A (en) * | 2021-02-05 | 2021-06-18 | 山东大学齐鲁医院(青岛) | Tibial plateau removing device |
| CN112971963B (en) * | 2021-02-05 | 2023-07-21 | 山东大学齐鲁医院(青岛) | Tibia platform taking-out device |
| CN114712042A (en) * | 2022-06-10 | 2022-07-08 | 北京爱康宜诚医疗器材有限公司 | Lock clip extractor |
| CN114712042B (en) * | 2022-06-10 | 2022-10-14 | 北京爱康宜诚医疗器材有限公司 | Lock clip extractor |
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