CN104398321B - Lateral condyle two-dimensional measurement device in a kind of femur - Google Patents
Lateral condyle two-dimensional measurement device in a kind of femur Download PDFInfo
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- CN104398321B CN104398321B CN201410582147.6A CN201410582147A CN104398321B CN 104398321 B CN104398321 B CN 104398321B CN 201410582147 A CN201410582147 A CN 201410582147A CN 104398321 B CN104398321 B CN 104398321B
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Abstract
Lateral condyle two-dimensional measurement device in a kind of femur, comprise a rectangular frame, wherein, described rectangular frame is made up of a downside cross bar, a left side montant, a upside cross bar and a right side montant, rectangular frame is placed into side in face of femoral joint, adjustment upside cross bar and right side montant make before its femoral joint that reclines respectively and side, namely can measure width and the degree of depth in interior lateral condyle joint, and the angle formed between amount medial and lateral condyle sagittal plane and horizontal plane.The present invention utilizes multiple measurement ruler to form two-dimensional framework, distinguish set amount hornwork in the two directions, lateral condyle size and angle in distal femur can be measured easily, for total knee arthroplasty carries out the positioning work of preoperative necessity, reduce corrective surgery hidden danger.
Description
Technical field:
The present invention relates to medical apparatus and instruments, lateral condyle two-dimensional measurement device in the preoperative positioner, particularly a kind of femur that particularly relate to Medical orthopaedic total knee arthroplasty (or claim total knee arthroplasty).
Background technology:
For the knee joint of serious change, such as severe knee joint osteoarthritis, rheumatoid gonarthritis advanced lesions, serious articular trauma patella dysfunction, the knee joint bone chondronecrosis, tumor etc. that relate to articular surface adopt conservative medicine and physiotherapy invalid often, need reconstruction of knee function to improve the quality of life of patient, apart from the bone surgery skill of exquisiteness, also need by the prosthetic material of advanced person, scientific design and supporting apparatus.
Distal femur front portion is called coaster, and its center has the incisura of a fore-and-aft direction that it is divided into inside and outside two parts, and trochlear notch extends rearward to be incisura intercondyloidea (ICN), terminates in crypts on coaster to front upper extension.The rear portion of distal femur is condyle of femur, is divided into condyle and femoral lateral condyle in femur by ICN, continues mutually respectively with inside and outside coaster, forms protruding femoral joint face.See from the side, condylus lateralis femoris radian be greater than medial condyle and comparatively in condyle more prominent before, and interior condyle extends back more than ectocondyle.See from anterior surface of lower extremity, the line of centres of hip (H), knee joint (O), ankle (C) is the mechanical axis of lower limb, and this axle only has and conforms to shank, forms 6 ° of acute angles with thigh, certainly will medial condyle will lower than lateral condyle, gravity center of human body just can drop on mechanical axis.In cutting outside facies artieularis malleolaris cartilage exchange artificial joint process in, go up depth of cut for making horizontal plane and sagittal plane (fore-and-aft direction) and conform to real conditions, need the angle formed between measurement medial and lateral condyle sagittal plane and horizontal plane.In prior art, do not have instrument can measure angle between medial and lateral condyle sagittal plane and horizontal plane, total knee replacement may cause the following muscle tone imbalanced development of patient.
Summary of the invention:
The object of the present invention is to provide lateral condyle two-dimensional measurement device in a kind of femur, in described this femur, lateral condyle two-dimensional measurement device will solve in prior art the technical problem of the angle can not measured between medial and lateral condyle sagittal plane and horizontal plane.
Lateral condyle two-dimensional measurement device in this femur of the present invention, comprise a rectangular frame, wherein, described rectangular frame is by a downside cross bar, a left side montant, a upside cross bar and a right side montant are formed, the left end of described downside cross bar is fixedly connected with the lower end of described left side montant, downside cross bar is vertical with left side montant, described upside cross bar is vertical with described right side montant, the left end of upside cross bar is connected with left side montant by a vertical sliding pair, the lower end of right side montant is connected with downside cross bar by a horizontal sliding pair, vertical sliding pair and horizontal sliding pair is provided with between upside cross bar and right side montant, one end of downside cross bar is fixedly connected with a backward cross bar, described backward cross bar is perpendicular to rectangular frame, a side direction protractor is fixedly installed between backward cross bar and downside cross bar, the center of circle of described side direction protractor is positioned on the junction point of downside cross bar and backward cross bar, the junction point of downside cross bar and backward cross bar is provided with a side direction pointer by rotating shaft, described side direction pointer is perpendicular to downside cross bar, upside cross bar is connected with a forward direction protractor by a horizontal sliding pair, the home position of described forward direction protractor is provided with a forwarding pointer bar by rotating shaft, the upper end of described forwarding pointer bar is fixedly installed a pointer, the lower end of forwarding pointer bar is provided with a horizontal pointer, described horizontal pointer is connected by a turning cylinder with the lower end of forwarding pointer bar, horizontal pointer is axial vertical with turning cylinder, the axis of turning cylinder overlaps with the length direction of forwarding pointer bar.
Further, be provided with a slide rail in the cross bar of upside along its length, the two ends of forward direction protractor are arranged in described slide rail.
Further, downside cross bar is provided with a level indicator in its length direction, backward cross bar is also provided with a level indicator in its length direction.
Further, the upper end of forwarding pointer bar is fixedly connected with pointer by a retaining mechanism, described retaining mechanism comprises the holder that is connected to the upper end of forwarding pointer bar, pointer hole is provided with in described holder, pointer hole described in pointer inserts, be provided with radial screw bore in the sidewall in pointer hole, in described radial screw bore, be provided with lock-screw.
Further, the right-hand member excircle of downside cross bar is provided with screw thread, and the thread segment of downside cross bar right-hand member is connected with a translation knob, the upper end outer circumferential of left side montant is provided with screw thread, the thread segment of montant upper end, left side is connected with a lifting knob.
Further, downside cross bar and left side montant are provided with graduation mark separately.
Operation principle of the present invention is: rectangular frame is placed into side in face of femoral joint, adjustment upside cross bar and right side montant make before its femoral joint that reclines respectively and side, namely width and the degree of depth in interior lateral condyle joint can be measured, and the angle formed between amount medial and lateral condyle sagittal plane and horizontal plane.
The present invention compares with prior art, and its effect is actively with obvious.The present invention utilizes multiple measurement ruler to form two-dimensional framework, distinguish set amount hornwork in the two directions, lateral condyle size and angle in distal femur can be measured easily, for total knee arthroplasty carries out the positioning work of preoperative necessity, reduce corrective surgery hidden danger.
Accompanying drawing illustrates:
Fig. 1 is the forward structure schematic diagram of lateral condyle two-dimensional measurement device in a kind of femur of the present invention.
Fig. 2 is the side direction structural representation of lateral condyle two-dimensional measurement device in a kind of femur of the present invention.
Detailed description of the invention:
Embodiment 1:
As depicted in figs. 1 and 2, lateral condyle two-dimensional measurement device in a kind of femur of the present invention, comprise a rectangular frame 12, wherein, described rectangular frame 12 is by a downside cross bar, a left side montant, a upside cross bar 9 and a right side montant 10 are formed, the left end of described downside cross bar is fixedly connected with the lower end of described left side montant, downside cross bar is vertical with left side montant, described upside cross bar 9 is vertical with described right side montant 10, the left end of upside cross bar 9 is connected with left side montant by a vertical sliding pair 7, the lower end of right side montant 10 is connected with downside cross bar by a horizontal sliding pair, vertical sliding pair and horizontal sliding pair 8 is provided with between upside cross bar 9 and right side montant 10, one end of downside cross bar is fixedly connected with a backward cross bar, described backward cross bar is perpendicular to rectangular frame 12, a side direction protractor 18 is fixedly installed between backward cross bar and downside cross bar, the center of circle of described side direction protractor 18 is positioned on the junction point of downside cross bar and backward cross bar, the junction point of downside cross bar and backward cross bar is provided with a side direction pointer 16 by rotating shaft, described side direction pointer 16 is perpendicular to downside cross bar, upside cross bar 9 is connected with a forward direction protractor 2 by a horizontal sliding pair, the home position of described forward direction protractor 2 is provided with a forwarding pointer bar 3 by rotating shaft 4, the upper end of described forwarding pointer bar 3 is fixedly installed a pointer 1, the lower end of forwarding pointer bar 3 is provided with a horizontal pointer 15, described horizontal pointer 15 is connected by a turning cylinder with the lower end of forwarding pointer bar 3, horizontal pointer 15 is axial vertical with described turning cylinder, the axis of turning cylinder overlaps with the length direction of forwarding pointer bar 3.
Concrete, horizontal pointer 15 is connected by a horizontal pointer sleeve pipe 13 with between turning cylinder.Side direction pointer 16 is connected by the rotating shaft on the junction point of a side direction pointer socket 17 and downside cross bar and backward cross bar.
Further, be provided with a slide rail 5 in upside cross bar 9 along its length, the two ends of forward direction protractor 2 are arranged in described slide rail 5.
Further, downside cross bar is provided with a level indicator 14 in its length direction, backward cross bar is also provided with a level indicator 19 in its length direction.
Further, the upper end of forwarding pointer bar 3 is fixedly connected with pointer 1 by a retaining mechanism, described retaining mechanism comprises the holder that is connected to the upper end of forwarding pointer bar 3, pointer hole is provided with in described holder, pointer 1 inserts described pointer hole, be provided with radial screw bore in the sidewall in pointer hole, in described radial screw bore, be provided with lock-screw.
Further, the right-hand member excircle of downside cross bar is provided with screw thread, and the thread segment of downside cross bar right-hand member is connected with a translation knob 11, the upper end outer circumferential of left side montant is provided with screw thread, the thread segment of montant upper end, left side is connected with a lifting knob 6.
Further, downside cross bar and left side montant are provided with graduation mark separately.
The operation principle of the present embodiment is: rectangular frame 12 is placed into side in face of femoral joint, adjustment upside cross bar 9 and right side montant 10 make before its femoral joint that reclines respectively and side, namely width and the degree of depth in interior lateral condyle joint can be measured, and the angle formed between amount medial and lateral condyle sagittal plane and horizontal plane.
Claims (6)
1. lateral condyle two-dimensional measurement device in a femur, comprise a rectangular frame, it is characterized in that: described rectangular frame is by a downside cross bar, a left side montant, a upside cross bar and a right side montant are formed, the left end of described downside cross bar is fixedly connected with the lower end of described left side montant, downside cross bar is vertical with left side montant, described upside cross bar is vertical with described right side montant, the left end of upside cross bar is connected with left side montant by a vertical sliding pair, the lower end of right side montant is connected with downside cross bar by a horizontal sliding pair, vertical sliding pair and horizontal sliding pair is provided with between upside cross bar and right side montant, one end of downside cross bar is fixedly connected with a backward cross bar, described backward cross bar is perpendicular to rectangular frame, a side direction protractor is fixedly installed between backward cross bar and downside cross bar, the center of circle of described side direction protractor is positioned on the junction point of downside cross bar and backward cross bar, the junction point of downside cross bar and backward cross bar is provided with a side direction pointer by rotating shaft, described side direction pointer is perpendicular to downside cross bar, upside cross bar is connected with a forward direction protractor by a horizontal sliding pair, the home position of described forward direction protractor is provided with a forwarding pointer bar by rotating shaft, the upper end of described forwarding pointer bar is fixedly installed a pointer, the lower end of forwarding pointer bar is provided with a horizontal pointer, described horizontal pointer is connected by a turning cylinder with the lower end of forwarding pointer bar, horizontal pointer is axial vertical with turning cylinder, the axis of turning cylinder overlaps with the length direction of forwarding pointer bar.
2. lateral condyle two-dimensional measurement device in a kind of femur as claimed in claim 1, it is characterized in that: be provided with a slide rail in the cross bar of upside along its length, the two ends of forward direction protractor are arranged in described slide rail.
3. lateral condyle two-dimensional measurement device in a kind of femur as claimed in claim 1, is characterized in that: downside cross bar is provided with a level indicator in its length direction, backward cross bar is also provided with a level indicator in its length direction.
4. lateral condyle two-dimensional measurement device in a kind of femur as claimed in claim 1, it is characterized in that: the upper end of forwarding pointer bar is fixedly connected with pointer by a retaining mechanism, described retaining mechanism comprises the holder that is connected to the upper end of forwarding pointer bar, pointer hole is provided with in described holder, pointer hole described in pointer inserts, be provided with radial screw bore in the sidewall in pointer hole, in described radial screw bore, be provided with lock-screw.
5. lateral condyle two-dimensional measurement device in a kind of femur as claimed in claim 1, it is characterized in that: the right-hand member excircle of downside cross bar is provided with screw thread, the thread segment of downside cross bar right-hand member is connected with a translation knob, the upper end outer circumferential of left side montant is provided with screw thread, the thread segment of montant upper end, left side is connected with a lifting knob.
6. lateral condyle two-dimensional measurement device in a kind of femur as claimed in claim 1, is characterized in that: downside cross bar and left side montant are provided with graduation mark separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410582147.6A CN104398321B (en) | 2014-10-27 | 2014-10-27 | Lateral condyle two-dimensional measurement device in a kind of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410582147.6A CN104398321B (en) | 2014-10-27 | 2014-10-27 | Lateral condyle two-dimensional measurement device in a kind of femur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104398321A CN104398321A (en) | 2015-03-11 |
| CN104398321B true CN104398321B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410582147.6A Expired - Fee Related CN104398321B (en) | 2014-10-27 | 2014-10-27 | Lateral condyle two-dimensional measurement device in a kind of femur |
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| Country | Link |
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| CN (1) | CN104398321B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107184294B (en) * | 2017-05-18 | 2018-11-16 | 青岛大学附属医院 | Distal femur rotational positioner |
| CN114209306B (en) * | 2021-11-23 | 2023-09-15 | 上海遥蕊医药科技中心 | Universal dividing ruler for orthopaedics |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278435Y (en) * | 1996-07-05 | 1998-04-15 | 山东省文登市整骨医院 | Femoral neck anteverted angle measuring instrument |
| US20050080428A1 (en) * | 2003-09-03 | 2005-04-14 | White Ralph Richard | Extracapsular surgical procedure for repair of anterior cruciate ligament rupture and surgical referencing instrument therefor |
| CN2857864Y (en) * | 2005-12-19 | 2007-01-17 | 戴维享 | Dynamic coax/condylus three-dimensional angle 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 |
| US8512349B2 (en) * | 2007-12-13 | 2013-08-20 | Richard A. Mengato | Apparatus for measuring depth of a bone opening and related method |
| CN201701336U (en) * | 2010-05-18 | 2011-01-12 | 创生医疗器械(江苏)有限公司 | condyle measuring device |
| CN102283726B (en) * | 2011-05-26 | 2013-09-25 | 祝桂涛 | Positioning device for bone-cutting angle and anteversion angle of femoral neck |
| CN202568260U (en) * | 2011-11-18 | 2012-12-05 | 翁文杰 | Femur posterior condylar angle measuring device |
| CN202920186U (en) * | 2012-11-29 | 2013-05-08 | 北京市春立正达医疗器械股份有限公司 | Femur survey meter |
| CN203314978U (en) * | 2013-01-17 | 2013-12-04 | 毕锴 | Multifunctional measuring ruler for department of orthopedics |
| CN103705246B (en) * | 2013-12-27 | 2015-11-25 | 北京爱康宜诚医疗器材股份有限公司 | Outward turning angle measuring device in knee joint |
| 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 |
| CN204181748U (en) * | 2014-10-27 | 2015-03-04 | 中国人民解放军第二军医大学 | Lateral condyle two-dimensional measurement device in femur |
-
2014
- 2014-10-27 CN CN201410582147.6A patent/CN104398321B/en not_active Expired - Fee Related
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| CN104398321A (en) | 2015-03-11 |
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Granted publication date: 20160406 Termination date: 20161027 |