CN103767808A - Femoral condyle measuring device used for unicompartmental knee arthroplasty - Google Patents
Femoral condyle measuring device used for unicompartmental knee arthroplasty Download PDFInfo
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- CN103767808A CN103767808A CN201410041253.3A CN201410041253A CN103767808A CN 103767808 A CN103767808 A CN 103767808A CN 201410041253 A CN201410041253 A CN 201410041253A CN 103767808 A CN103767808 A CN 103767808A
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- condyle
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- femur
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Abstract
The invention relates to a femoral condyle measuring device used for unicompartmental knee arthroplasty. The femoral condyle measuring device is matched with a guider of the unicompartmental knee arthroplasty for use; the femoral condyle measuring device comprises a positioning part and a measuring part; the positioning part is connected with the measuring part in a detachable manner. The femoral condyle measuring device used for the unicompartmental knee arthroplasty can be directly used for intraoperative measurement; compared with traditional preoperative photograph indirect measurement, the intraoperative measurement is not affected by the quality of the photographs and other factors, so that the measurement is more precise; moreover, according to the requirement of operations, different measuring parts can be arranged corresponding to different radiuses of prostheses; the measuring part is directly inserted in the femoral condyle, so that the operation is simple and convenient.
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 chamber between three, is respectively between inner side between chamber, outside chamber between chamber, patella.Gonarthritis can affect wherein any one chamber.
Knee joint single condyle replacement (unicondylar knee arthroplasty, UKA) is only surface replacement to be carried out in chamber between pathological changes, but is mainly to replace for medial condyle at present.
Knee joint single condyle replacement (Unicompartmental Knee Arthroplasty, UKA) only refers to surface replacement carried out in knee joint inner side or outer side chamber, and its main purpose is to substitute the cartilage surface that knee joint shin femur is damaged.But its surgical effect of reporting is not fully up to expectations, and many surgeons are ignored 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 thicken and ripe surgical technic improves single condyle system clinical effectiveness greatly, the application of UKA is tending towards reviving.
Single condyle is replaced the prosthese adopting, and is generally divided into " femoral prosthesis " and " tibial prosthesis ", clinical conventional Oxford third generation list condyle prosthese at present, and by femoral prosthesis, tibial prosthesis and movable meniscus composition.The meniscus liner of cooperation different curvature radius femoral prosthesis and the tibial prosthesis of 5 kinds of different sizes by the femoral prosthesis of 5 kinds of different sizes, 5 kinds of specifications of 5 kinds of thickness form, replace single specification femoral prosthesis in the past, strengthen the fitness between prosthese and skeleton, reduce bone and move; Cover better tibia surface, reduced prosthese to inner side soft tissue excitation.
In the operation of single condyle (femur) displacement, require femoral prosthesis and the condyle of femur that cut bone to match.Therefore, single condyle femoral prosthesis has multiple different radii prosthese, to coordinate the patient of different Skeletal sizes.
The accurate selection of prosthesis size will finally 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, conventional metering system is to take x-ray lateral projection before operation at present, then on x-ray lateral projection, indirectly measures the size of needed prosthese.But this mode is very high for the requirement of taking the photograph sheet, and conventionally taken the photograph tablet quality, scaling, the impact of patient's experience, result is very inaccurate.
Need to a kind ofly can be convenient for measuring and measure the femur measuring device for single condyle replacement accurately at present.
Summary of the invention
For addressing the above problem, the invention provides a kind of femur measuring device that can measure in the art of single condyle replacement, measure more convenient and accurate.
For a condyle of femur measuring device for single condyle replacement, the guider of this condyle of femur measuring device and single condyle replacement is used in conjunction with, and described guider is provided with the first locating hole that prosthese is installed;
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 mating with the first locating hole on described guider;
It is hook-shaped that described measurement section is circular arc, and its arc radius is identical with prosthese radius to be installed;
In the time that described location division is connected with measurement section, the described protrusion direction of the first 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;
In the time that the first described positioning convex coordinates with the locating hole of described guider, the arc hook of described measurement section can insert and contain from the proof of condyle of femur 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 again the measurement section of a specific dimensions (prosthesis size) to install and be connected with location division, the arc hook of measurement section is directly inserted and contains to the surface of condyle of femur from the front of femur; Judge by the perspective in X ray art whether arc hook coordinates completely with condyle of femur surface again;
If coordinate completely, directly select the prosthese identical with arc hook radius size;
If coordinate not goodly, change the measurement section of an adjacent size and survey once again, until coordinate completely.
Preferably, described location division is provided with second positioning convex and coordinates with 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 be measured in art, and with traditional preoperative taking the photograph compared with sheet measures indirectly, the impact of not taken the photograph the factors such as tablet quality, measures more accurate; According to operation needs, can different measurement section be set corresponding different prosthese radius in addition, measurement section is directly inserted 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 in single condyle replacement, condyle of femur measuring device not being installed;
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.
The specific embodiment
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;
It is hook-shaped that measurement section 2 is circular arc; In the time that location division 1 is connected with measurement section 2, the radial direction of the protrusion direction of the first positioning convex 11 and the midpoint of the arc hook of measurement section 2 is parallel and towards identical;
The guider 4 of this condyle of femur measuring device and single condyle replacement is used in conjunction with, and referring to Fig. 2, guider 4 is provided with the first locating hole 41 that prosthese is installed, and is also provided with the second locating hole 42 on it.As Fig. 2, guider 4 is positioned on femur A and tibia B.
While measurement in art, after guider 4 location, relocate measuring device, specifically: the first positioning convex 11 of location division 1 is coordinated with the first locating hole 41 of guider 4, and the second positioning convex 12 of location division 1 coordinates with the second locating hole 42 of guider 4;
Rule of thumb select again the measurement section 2 of a specific dimensions (prosthesis size) to install and be connected with location division 1, the arc hook of measurement section 2 is directly inserted and contains to the surface of condyle of femur from the front of femur; Judge 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, directly select the prosthese identical with arc hook radius size;
If coordinate not goodly, change the measurement section of an adjacent size and survey once again, until coordinate completely.
Condyle of femur measuring device for single condyle replacement of the present invention can directly be measured in art, and with traditional preoperative taking the photograph compared with sheet measures indirectly, the impact of not taken the photograph the factors such as tablet quality, measures more accurate; According to operation needs, can different measurement section be set corresponding different prosthese radius in addition, measurement section is directly inserted condyle of femur, simple to operation.
In sum, the innovation practicality that the present invention's real tool in like product is splendid is looked 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 that all act application description of the present invention and claim are done changes, and 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 is used in conjunction with, and described guider is provided with the first locating hole that prosthese is installed;
It is characterized in that: 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 mating with the first locating hole on described guider;
It is hook-shaped that described measurement section is circular arc, and its arc radius is identical with prosthese radius to be installed;
In the time that described location division is connected with measurement section, the described protrusion direction of the first 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;
In the time that the first described positioning convex coordinates with the first locating hole of described guider, the arc hook of described measurement section can insert and contain from the front of condyle of femur at least part of surface of condyle of femur.
2. the condyle of femur measuring device for single condyle replacement as claimed in claim 1, is characterized in that: described location division is provided with second positioning convex and coordinates with the corresponding locating hole on described guider.
3. the condyle of femur measuring device for single condyle replacement as claimed in claim 1, 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 |
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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 |
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| CN103767808A true CN103767808A (en) | 2014-05-07 |
| CN103767808B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106726023A (en) * | 2016-12-30 | 2017-05-31 | 北京爱康宜诚医疗器材有限公司 | Joint position calibrating installation |
| CN111067675A (en) * | 2019-12-31 | 2020-04-28 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106726023A (en) * | 2016-12-30 | 2017-05-31 | 北京爱康宜诚医疗器材有限公司 | Joint position calibrating installation |
| CN111067675A (en) * | 2019-12-31 | 2020-04-28 | 牛依芃 | Knee joint unicondylar pressure and frictional force measuring device |
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| Publication number | Publication date |
|---|---|
| CN103767808B (en) | 2015-12-30 |
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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 |