CN112155809A - Tibia single condyle prosthesis holder - Google Patents
Tibia single condyle prosthesis holder Download PDFInfo
- Publication number
- CN112155809A CN112155809A CN202011040850.6A CN202011040850A CN112155809A CN 112155809 A CN112155809 A CN 112155809A CN 202011040850 A CN202011040850 A CN 202011040850A CN 112155809 A CN112155809 A CN 112155809A
- Authority
- CN
- China
- Prior art keywords
- prosthesis
- push rod
- block
- tibial
- claw
- 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.)
- Granted
Links
- 210000002303 tibia Anatomy 0.000 title description 12
- 210000000078 claw Anatomy 0.000 claims abstract description 28
- 101100234547 Caenorhabditis elegans rod-1 gene Proteins 0.000 description 6
- 210000000988 bone and bone Anatomy 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 2
- 241000085356 Aristostomias tittmanni Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4622—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof having the shape of a forceps or a clamp
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a tibial unicondylar prosthesis holder, which comprises a push rod, wherein one side of the push rod is movably connected with a movable rod; the push rod comprises a knocking block arranged at one end and a connecting block arranged at the other end; one end of the connecting block is provided with a cambered surface, and one side of the cambered surface is provided with a fixing claw; a first clamping block is arranged below the cambered surface; a movable claw is also arranged in the connecting block; the movable rod comprises a connecting part, and a second clamping block is arranged at one connecting end of the connecting part; the other end is provided with a handle. The invention has simple structure and convenient use, and can transversely and longitudinally clamp the prosthesis, thereby solving the problem that the prosthesis is easy to longitudinally shift when the traditional holder is used; the design of the push rod and the knocking block solves the problem that the traditional holder is difficult to place the prosthesis into a designated position; the parameters of the fixed claws and the cambered surface are calculated, so that convenience is brought to the vision and the operation of an operator, and the operation difficulty is further reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a tibial unicondylar prosthesis holder.
Background
In the knee joint unicondylar replacement surgery, a femur unicondylar prosthesis and a tibia unicondylar prosthesis need to be implanted respectively.
When implanting the tibial unicondylar prosthesis, an operator needs to clamp the tibial unicondylar prosthesis by using the tibial unicondylar prosthesis holder and place the tibial unicondylar prosthesis in a proper position. Although the existing tibial unicondylar prosthesis holder can clamp the clamping groove on the lateral surface of the tibial unicondylar prosthesis through the forceps head, the following problems exist in the actual operation:
(1) the forceps head clamps the clamping groove on the lateral surface of the tibial unicondylar prosthesis, so that the tibial unicondylar prosthesis is subjected to a transverse force, but the tibial unicondylar prosthesis is not longitudinally stressed and is easy to longitudinally deviate when touching bones or other instruments in the operation process, thereby increasing the operation difficulty.
(2) As shown in fig. 6, when the existing tibial unicondylar prosthesis holder clamps a tibial unicondylar prosthesis, in order to clamp the clamping groove on the cambered surface of the prosthesis, an included angle exists between the axial plane and the lateral plane of the prosthesis, which brings inconvenience to the operator in vision and operation, and further increases the difficulty of the operation.
(3) When implanting the tibial unicondylar prosthesis, an operator completely depends on the force of holding the handle to send the tibial unicondylar prosthesis to a designated position, and the sending of the tibial unicondylar prosthesis is often subjected to the resistance of peripheral tissues and bone tangent planes, so that the operator is difficult to send the tibial prosthesis to the designated position.
In order to reduce the difficulty of knee joint unicondylar replacement surgery, improve the success rate of the surgery and save the time and energy of surgeons, the invention of a novel tibial unicondylar prosthesis holder is urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides a tibial unicondylar prosthesis holder.
The technical scheme of the invention is as follows: a tibia single condyle prosthesis holder comprises a push rod, wherein a movable rod is movably connected to one side of the push rod; the push rod comprises a knocking block arranged at one end and a connecting block arranged at the other end; one end of the connecting block is provided with an arc surface, and one side of the arc surface is provided with a fixed claw; a first clamping block is arranged below the cambered surface; the connecting block is also provided with a movable claw; the movable rod comprises a connecting part, and one end of the connecting part is provided with a second clamping block; the other end is provided with a handle.
Furthermore, a first groove is formed in one side of the push rod; the movable rod is movably connected in the first groove.
Further, the movable claw comprises a screw rod and a claw which are connected with each other; one end of the claw is provided with a claw head.
Furthermore, an inclined hole is formed in the connecting block, and the screw rod is arranged in the inclined hole.
Furthermore, a clamping groove is formed in the inclined hole, a clamping pin is arranged on the screw rod, and the clamping groove is matched with the clamping pin.
Furthermore, a second groove is formed in the other side of the push rod; and a nut is arranged in the second groove and is matched with the screw rod.
Furthermore, a first elastic cushion is arranged below the second clamping block.
Furthermore, a second elastic cushion is arranged on one side of the cambered surface.
The tibia unicondylar prosthesis holder is simple in structure and convenient to use, the tibia unicondylar prosthesis is transversely held through the matching of the fixed claws and the movable claws, and then the tibia unicondylar prosthesis is longitudinally held through the matching of the first holding block and the second holding block, so that the problem that the prosthesis is easy to longitudinally shift when the traditional holder is used is solved; through the design of the push rod and the knocking block, an operator can knock the holder with a tool at the knocking block, so that the problem that the prosthesis is difficult to place in a specified position by using the traditional holder is solved; the parameters of the fixed claw and the cambered surface are calculated, so that when the tibia unicondylar prosthesis is installed on the tibia unicondylar prosthesis, the side plane of the prosthesis is parallel to the medial axis plane of the tibia unicondylar prosthesis, the operator can conveniently operate the tibia unicondylar prosthesis in vision, and the operation difficulty is further reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention;
FIG. 3 is a schematic structural view of a tibial unicondylar prosthesis model with a loose jaw;
FIG. 4 is a schematic structural view of a single tibial condyle prosthetic model clamped by a movable jaw;
FIG. 5 is a schematic view of the medial plane of the present invention parallel to the prosthetic lateral plane of a tibial unicondylar prosthetic model;
fig. 6 is a schematic structural view of a tibial unicondylar prosthetic model.
In the figure, a push rod-1, a movable rod-2 and a tibia unicondylar prosthesis model-3; 1.1 parts of a knocking block, 1.2 parts of a connecting block, 1.3 parts of an arc surface, 1.4 parts of a fixed claw, 1.5 parts of a first clamping block, 1.6 parts of a movable claw, 1.7 parts of a first groove and 1.8 parts of a second elastic cushion; a connecting part-2.1, a second clamping block-2.2, a handle-2.3 and a first elastic cushion-2.4; 3.1 parts of a first clamping groove, 3.2 parts of a second clamping groove, 3.3 parts of a prosthesis cambered surface and 3.4 parts of a prosthesis side plane; inclined hole-1.2.1, neck-1.2.2, screw-1.6.1, hook-1.6.2, claw head-1.6.3, bayonet-1.6.4, nut-1.6.5.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a tibial unicondylar prosthesis holder comprises a push rod 1, wherein a movable rod 2 is movably connected to one side of the push rod 1; the push rod 1 comprises a knocking block 1.1 arranged at one end and a connecting block 1.2 arranged at the other end; one end of the connecting block 1.2 is provided with a cambered surface 1.3, and one side of the cambered surface 1.3 is provided with a fixed claw 1.4; a first clamping block 1.5 is arranged below the cambered surface 1.3; a movable claw 1.6 is also arranged in the connecting block 1.2; the movable rod 2 comprises a connecting part 2.1, and one end of the connecting part 2.1 is provided with a second clamping block 2.2; the other end is provided with a handle 2.3; one side of the push rod 1 is provided with a first groove 1.7; the movable rod 2 is movably connected in the first groove 1.7; the movable claw 1.6 comprises a screw rod 1.6.1 and a claw 1.6.2 which are connected with each other; one end of the hook claw 1.6.2 is provided with a claw head 1.6.3; an inclined hole 1.2.1 is formed in the connecting block 1.2, and the screw rod 1.6.1 is arranged in the inclined hole 1.2.1; a clamping groove 1.2.2 is arranged in the inclined hole 1.2.1, a clamping pin 1.6.4 is arranged on the screw rod 1.6.1, and the clamping groove 1.2.2 is matched with the clamping pin 1.6.4; a second groove 1.8 is arranged on the other side of the push rod 1; a nut 1.6.5 is arranged in the second groove 1.8, and the nut 1.6.5 is matched with the screw rod 1.6.1; a first elastic cushion 2.4 is arranged below the second clamping block 2.2; one side of the cambered surface 1.3 is provided with a second elastic cushion 1.8.
In practical use, as shown in fig. 3, an operator firstly places the tibial unicondylar prosthesis model 3 on the first clamping block 1.5 of the invention, fits the prosthesis cambered surface 3.3 with the cambered surface 1.3, and embeds the fixing claw 1.4 into the first clamping groove-3.1, at this time, because the parameters of the fixing claw 1.4 and the cambered surface 1.3 are calculated, when the tibial unicondylar prosthesis 3 is installed on the invention, the prosthesis side plane 3.4 is parallel to the medial axis plane of the invention (as shown in fig. 5), thereby bringing convenience to the operator in vision and operation and further reducing the operation difficulty.
As shown in fig. 4, the surgeon rotates the nut 1.6.5 to drive the screw 1.6.1 to move along the inclined hole 1.2.1, and further drive the hook 1.6.2 to move, so that the head 1.6.3 of the top end of the hook 1.6.2 abuts against the second holding groove 3.2, thereby completing the transverse fixation of the tibial unicondylar prosthesis model 3.
Then, the surgeon presses down the second holding block 2.2 against the tibial unicondylar prosthesis model 3 by the control handle 2.3, and the second holding block 2.2 and the first holding block 1.5 perform longitudinal fixation on the tibial unicondylar prosthesis model 3.
Finally, the operator can hold the invention to place the tibial unicondylar prosthesis model 3 in the proper position of the knee joint, and if the resistance generated by the bone section or the tissue is larger, the operator can strike the knocking block 1.1 by other tools to implant the tibial unicondylar prosthesis model 3 in the proper position.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040850.6A CN112155809B (en) | 2020-09-28 | 2020-09-28 | Tibia unicondylar prosthesis holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040850.6A CN112155809B (en) | 2020-09-28 | 2020-09-28 | Tibia unicondylar prosthesis holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112155809A true CN112155809A (en) | 2021-01-01 |
| CN112155809B CN112155809B (en) | 2024-08-20 |
Family
ID=73861348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040850.6A Active CN112155809B (en) | 2020-09-28 | 2020-09-28 | Tibia unicondylar prosthesis holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112155809B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972075A (en) * | 2021-02-07 | 2021-06-18 | 河北医科大学第三医院 | Prosthesis extractor for hip joint replacement |
| CN114053004A (en) * | 2021-12-02 | 2022-02-18 | 天衍医疗器材有限公司 | Middle condyle holding device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4364389A (en) * | 1980-03-19 | 1982-12-21 | Waldemar Link Gmbh & Co. | Instrument for holding and inserting the tibia plate for an endo-knee prosthesis having sliding surfaces |
| US5171244A (en) * | 1990-01-08 | 1992-12-15 | Caspari Richard B | Methods and apparatus for arthroscopic prosthetic knee replacement |
| WO2003013371A1 (en) * | 2001-08-10 | 2003-02-20 | Depuy International Limited | Tibial resection guide |
| WO2006112911A2 (en) * | 2005-04-18 | 2006-10-26 | Uni-Knee, Llc | Unicondylar knee implant and instrument system |
| US20150342516A1 (en) * | 2014-06-02 | 2015-12-03 | Orthosoft Inc. | Device and method for hip-knee-ankle angle verification and femoral mechanical axis digitization |
| CN207590745U (en) * | 2017-03-16 | 2018-07-10 | 山东省文登整骨医院 | Knee joint single condyle replaces die trial grips pincers |
| CN111528980A (en) * | 2020-04-16 | 2020-08-14 | 上海市杨浦区中心医院(同济大学附属杨浦医院) | Femur positioning device for knee joint fixing platform single condyle replacement |
| CN212490277U (en) * | 2020-09-28 | 2021-02-09 | 中国科学院大学宁波华美医院 | A tibial unicondylar prosthesis holder |
-
2020
- 2020-09-28 CN CN202011040850.6A patent/CN112155809B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4364389A (en) * | 1980-03-19 | 1982-12-21 | Waldemar Link Gmbh & Co. | Instrument for holding and inserting the tibia plate for an endo-knee prosthesis having sliding surfaces |
| US5171244A (en) * | 1990-01-08 | 1992-12-15 | Caspari Richard B | Methods and apparatus for arthroscopic prosthetic knee replacement |
| WO2003013371A1 (en) * | 2001-08-10 | 2003-02-20 | Depuy International Limited | Tibial resection guide |
| WO2006112911A2 (en) * | 2005-04-18 | 2006-10-26 | Uni-Knee, Llc | Unicondylar knee implant and instrument system |
| US20150342516A1 (en) * | 2014-06-02 | 2015-12-03 | Orthosoft Inc. | Device and method for hip-knee-ankle angle verification and femoral mechanical axis digitization |
| CN207590745U (en) * | 2017-03-16 | 2018-07-10 | 山东省文登整骨医院 | Knee joint single condyle replaces die trial grips pincers |
| CN111528980A (en) * | 2020-04-16 | 2020-08-14 | 上海市杨浦区中心医院(同济大学附属杨浦医院) | Femur positioning device for knee joint fixing platform single condyle replacement |
| CN212490277U (en) * | 2020-09-28 | 2021-02-09 | 中国科学院大学宁波华美医院 | A tibial unicondylar prosthesis holder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972075A (en) * | 2021-02-07 | 2021-06-18 | 河北医科大学第三医院 | Prosthesis extractor for hip joint replacement |
| CN114053004A (en) * | 2021-12-02 | 2022-02-18 | 天衍医疗器材有限公司 | Middle condyle holding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112155809B (en) | 2024-08-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 315000 No.41, northwest street, Ningbo, Zhejiang Province Applicant after: NINGBO NO.2 Hospital Address before: No.41, northwest street, Haishu District, Ningbo City, Zhejiang Province, 315000 Applicant before: Ningbo Huamei Hospital, University of Chinese Academy of Sciences Country or region before: China |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |