CN103767808B - For the condyle of femur measuring device of single condyle replacement - Google Patents
For the condyle of femur measuring device of single condyle replacement Download PDFInfo
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- CN103767808B CN103767808B CN201410041253.3A CN201410041253A CN103767808B CN 103767808 B CN103767808 B CN 103767808B CN 201410041253 A CN201410041253 A CN 201410041253A CN 103767808 B CN103767808 B CN 103767808B
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Abstract
The present invention relates to a kind of condyle of femur measuring device for single condyle replacement, the guider of this condyle of femur measuring device and single condyle replacement with the use of, this femur measuring device comprises location division and measurement section; Described location division is removably connected with measurement section.Condyle of femur measuring device for single condyle replacement of the present invention, can directly measure in art, preoperatively takes the photograph compared with sheet indirect inspection, not by the impact of taking the photograph the factors such as tablet quality, measure more accurate with traditional; In addition according to operation needs, can arrange different measurement section by corresponding different prosthese radius, measurement section directly inserts condyle of femur, simple to operation.
Description
Technical field
The present invention relates to a kind of condyle of femur measuring device for single condyle replacement.
Background technology
Osteoarthritis is a kind of common chronic joint disease, is mainly in the knee joint that heavy burden is larger.Knee joint is divided into room between three, is respectively room between inner side, between outside room between room, patella.Gonarthritis can affect wherein any one room.
Knee joint single condyle replacement (unicondylarkneearthroplasty, UKA) only carries out surface replacement to room between pathological changes, but mainly replace for medial condyle at present.
Knee joint single condyle replacement (UnicompartmentalKneeArthroplasty, UKA) refer to only to inside knee joint or outer side chamber carry out surface replacement, its main purpose is the cartilage surface that alternative knee joint shin femur is damaged.But its surgical effect of reporting is not fully up to expectations, and many surgeons ignore its application gradually because of the not good result described in document.In recent years, along with the improvement of prosthetic designs, appropriate patient select, the improvement of polyethylene material with to thicken and the surgical technic of maturation makes single condyle system clinical effectiveness greatly improve, the application of UKA is tending towards reviving.
Single condyle replaces the prosthese adopted, and is generally divided into " femoral prosthesis " and " tibial prosthesis ", current clinical conventional Oxford third generation list condyle prosthese, by femoral prosthesis, and tibial prosthesis and movable meniscus composition.Be made up of the meniscus liner of cooperation different curvature radius femoral prosthesis of the femoral prosthesis of 5 kinds of different sizes, 5 kinds of thickness, 5 kinds of specifications and the tibial prosthesis of 5 kinds of different sizes, instead of single specification femoral prosthesis in the past, strengthen the fitness between prosthese and skeleton, reduce bone and move; Cover femoral surface better, decrease prosthese to inner side soft tissue excitation.
In the operation of single condyle (femur) displacement, require that femoral prosthesis matches with the condyle of femur cutting bone.Therefore, single condyle femoral prosthesis has multiple different radii prosthese, to coordinate the patient of different Skeletal size.
The accurate selection of prosthesis size finally will affect surgical effect and prosthese long-term survival rate, due to Minimally Invasive Surgery, be difficult to accomplish as carried out femoral prosthesis size Measurement accuracy in total knee replacement.
About the measurement of the size of condyle of femur, metering system conventional at present takes x-ray lateral projection before the surgery, on x-ray lateral projection, then indirectly measure the size of required prosthese.But this mode is very high for the requirement of taking the photograph sheet, and is usually taken the photograph tablet quality, scaling, patient's experience influence, and result is very inaccurate.
Current needs are a kind of can be convenient for measuring and measure accurately for the femur measuring device of single condyle replacement.
Summary of the invention
For solving the problem, the invention provides a kind of femur measuring device that can carry out measuring in the art of single condyle replacement, measuring more convenient and accurately.
For a condyle of femur measuring device for single condyle replacement, the guider of this condyle of femur measuring device and single condyle replacement with the use of, described guider is provided with the first locating hole installing prosthese;
This femur measuring device comprises location division and measurement section; Described location division is removably connected with measurement section;
Described location division is provided with the first positioning convex mated with the first locating hole on described guider;
Described measurement section is that circular arc is hook-shaped, and its arc radius is identical with prosthese radius to be installed;
When described location division is connected with measurement section, the protrusion direction of the first described positioning convex and the midpoint of the arc hook of described measurement section are parallel and towards identical to the radial direction of round dot;
When the first described positioning convex coordinates with the locating hole of described guider, the arc hook of described measurement section can insert from the proof of condyle of femur and contain at least part of surface of condyle of femur.
In the art of single condyle replacement, after guider navigates on femur and tibia, the first positioning convex on the location division of measuring device of the present invention is inserted in the locating hole of the installation prosthese on guider, rule of thumb select the measurement section of a specific dimensions (prosthesis size) to install with location division to be again connected, the arc hook of measurement section is directly inserted from the front of femur and contains the surface of condyle of femur; Judge whether arc hook coordinates completely with condyle of femur surface by the perspective in X-ray art again;
If coordinate completely, then directly select the prosthese identical with arc hook radius size;
If coordinate not good, then the measurement section of changing an adjacent size is surveyed once again, until coordinate completely.
Preferably, described location division is provided with second positioning convex and coordinates to the corresponding locating hole on described guider.
Preferably, described measurement section is removably connected by a connecting portion with location division.
Condyle of femur measuring device for single condyle replacement of the present invention, can directly measure in art, preoperatively takes the photograph compared with sheet indirect inspection, not by the impact of taking the photograph the factors such as tablet quality, measure more accurate with traditional; In addition according to operation needs, can arrange different measurement section by corresponding different prosthese radius, measurement section directly inserts condyle of femur, simple to operation.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of condyle of femur measuring device of the present invention;
Fig. 2 is the front schematic view of not installing condyle of femur measuring device in single condyle replacement;
Fig. 3 is the using state schematic diagram of the side of condyle of femur measuring device of the present invention in single condyle replacement.
Detailed description of the invention
Ginseng Fig. 1, a kind of condyle of femur measuring device for single condyle replacement, this femur measuring device comprises location division 1 and measurement section 2; Location division 1 is removably connected by connecting portion 3 with measurement section 2;
Location division 1 is provided with the first positioning convex 11 and the second positioning convex 12;
Measurement section 2 is hook-shaped in circular arc; When location division 1 is connected with measurement section 2, the protrusion direction of the first positioning convex 11 is parallel with the radial direction of the midpoint of the arc hook of measurement section 2 and towards identical;
The guider 4 of this condyle of femur measuring device and single condyle replacement with the use of, see Fig. 2, guider 4 is provided with the first locating hole 41 installing prosthese, it is also provided with the second locating hole 42.As Fig. 2, guider 4 is positioned on femur A and tibia B.
When measuring in art, after guider 4 is located, relocate measuring device, specifically: coordinated with the first locating hole 41 of guider 4 by the first positioning convex 11 of location division 1, the second positioning convex 12 of location division 1 coordinates with the second locating hole 42 of guider 4;
Rule of thumb select the measurement section 2 of a specific dimensions (prosthesis size) to install with location division 1 to be again connected, the arc hook of measurement section 2 is directly inserted from the front of femur and contains the surface of condyle of femur; Judged by the perspective in X-ray art, whether the arc hook of measurement section 2 coordinates completely with condyle of femur surface again;
If coordinate completely, then directly select the prosthese identical with arc hook radius size;
If coordinate not good, then the measurement section of changing an adjacent size is surveyed once again, until coordinate completely.
Condyle of femur measuring device for single condyle replacement of the present invention, can directly measure in art, preoperatively takes the photograph compared with sheet indirect inspection, not by the impact of taking the photograph the factors such as tablet quality, measure more accurate with traditional; In addition according to operation needs, can arrange different measurement section by corresponding different prosthese radius, measurement section directly inserts condyle of femur, simple to operation.
In sum, the innovation practicality that the present invention's real tool in like product is splendid, looks through domestic and international correlation technique data or patent documentation simultaneously, does not also find that same configuration discloses formerly.But the above is only part possible embodiments of the present invention, the equivalent structure change that all act application description of the present invention and claim are done, ought to be included in the scope of the claims of the present invention.
Claims (3)
1. for a condyle of femur measuring device for single condyle replacement, the guider of this condyle of femur measuring device and single condyle replacement with the use of, described guider is provided with the first locating hole installing prosthese;
It is characterized in that: this condyle of femur measuring device comprises location division and measurement section; Described location division is removably connected with measurement section;
Described location division is provided with the first positioning convex mated with the first locating hole on described guider;
Described measurement section is that circular arc is hook-shaped, and its arc radius is identical with prosthese radius to be installed;
When described location division is connected with measurement section, the protrusion direction of the first described positioning convex and the midpoint of the arc hook of described measurement section are parallel and towards identical to the radial direction of round dot;
When the first described positioning convex coordinates with the first locating hole of described guider, the arc hook of described measurement section can insert from the front of condyle of femur and contain at least part of surface of condyle of femur.
2., as claimed in claim 1 for the condyle of femur measuring device of single condyle replacement, it is characterized in that: described location division is provided with second positioning convex and coordinates to the corresponding locating hole on described guider.
3., as claimed in claim 1 for the condyle of femur measuring device of single condyle replacement, it is characterized in that: described measurement section is removably connected by a connecting portion with location division.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041253.3A CN103767808B (en) | 2014-01-28 | 2014-01-28 | For the condyle of femur measuring device of single condyle replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041253.3A CN103767808B (en) | 2014-01-28 | 2014-01-28 | For the condyle of femur measuring device of single condyle replacement |
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| Publication Number | Publication Date |
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| CN103767808A CN103767808A (en) | 2014-05-07 |
| CN103767808B true CN103767808B (en) | 2015-12-30 |
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| CN201410041253.3A Active CN103767808B (en) | 2014-01-28 | 2014-01-28 | For the condyle of femur measuring device of single condyle replacement |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106726023B (en) * | 2016-12-30 | 2019-09-20 | 北京爱康宜诚医疗器材有限公司 | Joint position calibrating installation |
| CN111067675B (en) * | 2019-12-31 | 2021-05-04 | 牛依芃 | Knee joint unicondylar pressure and frictional force measuring device |
Citations (7)
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|---|---|---|---|---|
| US5423827A (en) * | 1994-06-02 | 1995-06-13 | Intermedics Orthopedics, Inc. | Surgical jig for femoral knee prosthesis |
| CN1132067A (en) * | 1995-01-06 | 1996-10-02 | 小罗伯特·E·布思 | Instrumentation for use in orthopaedic surgery |
| CN2936142Y (en) * | 2006-08-16 | 2007-08-22 | 北京茵普兰科技发展有限公司 | Measuring and positioning device for condyle of femur |
| CN101102724A (en) * | 2004-12-21 | 2008-01-09 | 史密夫和内修有限公司 | Rotational alignment femoral sizing guide |
| US7488324B1 (en) * | 2003-12-08 | 2009-02-10 | Biomet Manufacturing Corporation | Femoral guide for implanting a femoral knee prosthesis |
| WO2012143444A1 (en) * | 2011-04-21 | 2012-10-26 | Deru Gmbh | Equipment for inserting a joint prosthesis, in particular a knee prosthesis |
| CN203724276U (en) * | 2014-01-28 | 2014-07-23 | 上海市杨浦区中心医院 | Femoral condyle measurer for unicompartmental knee arthroplasty |
-
2014
- 2014-01-28 CN CN201410041253.3A patent/CN103767808B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423827A (en) * | 1994-06-02 | 1995-06-13 | Intermedics Orthopedics, Inc. | Surgical jig for femoral knee prosthesis |
| CN1132067A (en) * | 1995-01-06 | 1996-10-02 | 小罗伯特·E·布思 | Instrumentation for use in orthopaedic surgery |
| US7488324B1 (en) * | 2003-12-08 | 2009-02-10 | Biomet Manufacturing Corporation | Femoral guide for implanting a femoral knee prosthesis |
| CN101102724A (en) * | 2004-12-21 | 2008-01-09 | 史密夫和内修有限公司 | Rotational alignment femoral sizing guide |
| CN2936142Y (en) * | 2006-08-16 | 2007-08-22 | 北京茵普兰科技发展有限公司 | Measuring and positioning device for condyle of femur |
| WO2012143444A1 (en) * | 2011-04-21 | 2012-10-26 | Deru Gmbh | Equipment for inserting a joint prosthesis, in particular a knee prosthesis |
| CN203724276U (en) * | 2014-01-28 | 2014-07-23 | 上海市杨浦区中心医院 | Femoral condyle measurer for unicompartmental knee arthroplasty |
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| CN103767808A (en) | 2014-05-07 |
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Application publication date: 20140507 Assignee: Shanghai Luxi Medical Devices Co., Ltd. Assignor: Shanghai Yangpu Central Hospital Contract record no.: 2019310000051 Denomination of invention: Femoral condyle measuring device used for unicompartmental knee arthroplasty Granted publication date: 20151230 License type: Exclusive License Record date: 20190722 |
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