CN103239232B - Stable knee joint shin offset amount measurement device - Google Patents
Stable knee joint shin offset amount measurement device Download PDFInfo
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- CN103239232B CN103239232B CN201310187514.8A CN201310187514A CN103239232B CN 103239232 B CN103239232 B CN 103239232B CN 201310187514 A CN201310187514 A CN 201310187514A CN 103239232 B CN103239232 B CN 103239232B
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Abstract
The invention discloses a stable knee joint shin offset amount measurement device which comprises a measurement seat, wherein a measurement mechanism and a positioning mechanism are arranged on the measurement seat. The positioning mechanism comprises a three-point positioning mechanism and a flexible positioning mechanism. The flexible positioning mechanism comprises a flexible positioning layer for adapting to patient leg types automatically. The three-point positioning mechanism comprises a top positioning head matched with a knee joint shin tubercle and a positioning support rotatably arranged on the bottom surface of the measurement seat in matching mode, and two ankle positioning heads matched with ankle joints are respectively arranged on the positioning support. The measurement mechanism comprises an axial measurement mechanism used for measuring front and back axial looseness of knee joints and a circumferential measurement mechanism used for measuring circumferential looseness of knee joints. The axial measurement mechanism comprises a measurement sliding block, the circumferential measurement mechanism comprises a measurement rod rotatably arranged on the measurement sliding block in matched mode, and a measurement head matched with patella is arranged at one end of the measurement rod facing to the knee joints. A metering device used for measuring the position of the measurement sliding block and the rotating angle of the measurement rod is further arranged on the measurement seat.
Description
Technical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of Stable knee joint shin offset amount measurement device.
Background technology
Antero posterior axis can be caused after injury of cruciate ligament of knee joint to unstable and lax, by the measurement of side-play amount relaxed forwards, backwards to knee axis, very important effect is played for diagnosis injury of cruciate ligament of knee joint.Physical examination method is that Lachman ' s checks comparatively accurately at present, and simple this inspection is more subjective and cannot quantize, therefore KT1000 type joint motion measuring device and KT2000 type joint motion measuring device have been there is on the market, objective quantification can draw the accurate reading of knee joint antero posterior axis to slackness, the diagnosis for injury of cruciate ligament of knee joint provides reliable foundation.
But, find through research, antero posterior axis after injury of cruciate ligament of knee joint, not only can be caused to lax, but also knee joint circumference can be caused lax, the angle that namely knee joint circumferential deflection is certain.Therefore, only measure circumferential lax data before and after knee joint at present and can not react the degree of injury of cruciate ligaments of knee joint completely really.
In addition, existing KT1000 type joint motion measuring device and KT2000 type joint motion measuring device only adopt the mode of bandage to be fixed on patient's shank, there is the inaccurate defect in location on the one hand, namely on patient's two legs, installation site is inconsistent, there is the defect of shaking (easily sliding) in measuring process on the other hand.These defects all can cause the measuring basis of patient's two legs inconsistent, and the measurement result obtained also can exist larger error.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of Stable knee joint shin offset amount measurement device, this Stable knee joint shin offset amount measurement device can not only measure kneed circumferential slackness, diagnosis for injury of cruciate ligament of knee joint provides reliable data foundation, and can accurately locate and fix, effectively improve certainty of measurement.
For achieving the above object, the invention provides following technical scheme:
A kind of Stable knee joint shin offset amount measurement device, comprise measuring seat, described measuring seat is provided with measuring mechanism and detent mechanism;
Described detent mechanism comprises three-point positioning mechanism and flexible detent mechanism, and described flexible detent mechanism comprises the flexible alignment layers by distortion self adaptation patient lower limb type, and described flexible alignment layers is fixedly installed on described measuring seat on the bottom surface of patient legs side; Described three-point positioning mechanism comprises and to be fixedly installed on described measuring seat bottom surface and the summit positioning head coordinated with knee joint tibial tuberosity and rotatable engagement are arranged on the locating support on described measuring seat bottom surface, and described locating support is provided with two and coordinates with two ankle joint respectively and the adjustable ankle positioning head of spacing distance;
Described measuring mechanism comprises for measuring knee joint antero posterior axis to the axial measuring mechanism of slackness and the circumferential measuring mechanism for measuring knee joint circumference slackness; Described axial measuring mechanism comprises the measurement slide block that single-degree-of-freedom is slidably installed on described measuring seat front end face, described circumferential measuring mechanism comprises rotatable engagement and is arranged on measuring stick on described measurement slide block, described measuring stick is provided with the gage outfit coordinated with patella towards kneed one end, described measuring stick relative to the rotating shaft of described measurement slide block perpendicular to the front end face of described measuring seat;
Described measuring seat is also provided with for measuring described measurement slide position and the metering device for measuring the described measuring stick anglec of rotation.
Further, the bottom surface of described measuring seat is provided with the sliding track mechanism I for regulating described locating support position, described sliding track mechanism I comprises the slide rail I be arranged on described measuring seat and the slide block I coordinated with slide rail, and described locating support rotatable engagement is arranged on described slide block I.
Further, described locating support is provided with the levelling gear for regulating the distance between described ankle positioning head and described measuring seat bottom surface.
Further, between described measurement slide block and described measuring stick, be provided with the angle scale for measuring the described measuring stick anglec of rotation, and/or in described measuring seat, be provided with the electronic goniometer for measuring the described measuring stick anglec of rotation.
Further, be provided with the rule for measuring described measurement slide position between described measuring seat and measurement slide block, and/or described measuring seat is provided with the position sensor for measuring described measurement slide position.
Further, described measuring seat is provided with the display screen for showing described measurement slide position and the measuring stick anglec of rotation.
Further, the side of described measuring seat is provided with link for colligation fixing band or hook.
Further, described flexible alignment layers adopts soft rubber to make.
Further, described gage outfit is provided with the measurement groove coordinated with patella, and described ankle positioning head is provided with the detent coordinated with ankle.
Further, in two described ankle positioning heads, one of them ankle positioning head is fixedly mounted on described locating support, and described in another, ankle positioning head is slidably installed on described locating support.
Beneficial effect of the present invention is:
Stable knee joint shin offset amount measurement device of the present invention, by arranging three-point positioning mechanism, summit positioning head and two ankle positioning head location survey seats can be passed through, and be set to scalable by being arranged on by locating support rotatable engagement on measuring seat and by the distance between two ankle positioning heads, can ensure that the positioning datum on patient's both legs is consistent; By arranging flexible detent mechanism, after being had good positioning by three-point positioning mechanism, by the distortion self adaptation patient lower limb type of flexible alignment layers, namely the leg of patient can be partly embedded in flexible alignment layers, can effectively avoid measuring seat to swing in measuring process, make measurement convenient more accurate with result;
By arranging measuring mechanism, after measuring seat has been located, the position of slide block on measuring seat and the anglec of rotation of change measuring stick is measured by changing, can gage outfit be placed on patella, so, by measuring the position of measurement slide block and the anglec of rotation of measuring stick of patient two lower limb respectively, effectively can measure and obtaining the knee joint antero posterior axis of patient after injury of cruciate ligament of knee joint to slackness and knee joint circumference slackness; Measuring on slide block by being arranged on by measuring stick rotatable engagement, can ensure that gage outfit is constant relative to the distance of its center of rotation, the precision namely measuring the knee joint circumference slackness obtained is higher.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the structural representation of Stable knee joint shin offset amount measurement device embodiment of the present invention;
Fig. 2 is the upward view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, be the structural representation of Stable knee joint shin offset amount measurement device embodiment of the present invention.The Stable knee joint shin offset amount measurement device of the present embodiment, comprises measuring seat 1, and measuring seat 1 is provided with measuring mechanism and detent mechanism.
Detent mechanism comprises three-point positioning mechanism and flexible detent mechanism, flexible detent mechanism comprises the flexible alignment layers 2 by distortion self adaptation patient lower limb type, flexible alignment layers 2 is fixedly installed on measuring seat 1 on the bottom surface of patient legs side, the flexible alignment layers 2 of the present embodiment adopts soft rubber to make, the requirement of distortion self adaptation different patient's lower limb type can be met, certainly, flexible alignment layers also can adopt other various material to make, and is not repeated.Three-point positioning mechanism comprises and to be fixedly installed on measuring seat 1 bottom surface and the summit positioning head 3 coordinated with knee joint tibial tuberosity and rotatable engagement are arranged on the locating support 4 on measuring seat 1 bottom surface, and locating support 4 is provided with two and coordinates with two ankle joint respectively and the adjustable ankle positioning head 5 of spacing distance.One of them ankle positioning head 5 of the present embodiment is fixedly installed on locating support 4, another ankle positioning head 5 is slidably installed on locating support 4, adopt the ankle positioning head 5 of this structure, the distance between adjustment two ankle positioning heads 5 can be facilitated, be convenient to location and operation, and one of them ankle positioning head 5 maintains static, the inconvenience of adjustment benchmark can be ensured, ensure the measuring basis of two legs consistent.
Measuring mechanism comprises for measuring knee joint antero posterior axis to the axial measuring mechanism of slackness and the circumferential measuring mechanism for measuring knee joint circumference slackness.Axial measuring mechanism comprises the measurement slide block 6 that single-degree-of-freedom is slidably installed on measuring seat 1 front end face, circumference measuring mechanism comprises rotatable engagement and is arranged on the measuring stick 7 measured on slide block 6, measuring stick 7 is provided with the gage outfit 8 coordinated with patella towards kneed one end, measuring stick 7 is relative to the front end face of rotating shaft perpendicular to measuring seat 1 measuring slide block 6.Preferably, gage outfit 8 is provided with the measurement groove coordinated with patella, and ankle positioning head 5 is provided with the detent coordinated with ankle, adopts the ankle positioning head 5 of this structure, can accurate positioning, adopts the gage outfit 8 of this structure, is convenient to find measuring basis accurately.
Measuring seat 1 is also provided with for measuring slide block 6 position and the metering device for measuring measuring stick 7 anglec of rotation.
The Stable knee joint shin offset amount measurement device of the present embodiment, by arranging three-point positioning mechanism, summit positioning head 3 and two ankle positioning head 5 location survey seats 1 can be passed through, and be set to scalable by being arranged on measuring seat 1 and by the distance between two ankle positioning heads 5 by locating support 4 rotatable engagement, can ensure that the positioning datum on patient's both legs is consistent.By arranging flexible detent mechanism, after being had good positioning by three-point positioning mechanism, by the distortion self adaptation patient lower limb type of flexible alignment layers 2, namely the leg of patient can be partly embedded in flexible alignment layers 2, measuring seat 1 effectively can be avoided to swing in measuring process, make measurement convenient more accurate with result.
By arranging measuring mechanism, after measuring seat 1 has been located, the position of slide block 6 on measuring seat 1 and the anglec of rotation of change measuring stick 7 is measured by changing, can gage outfit 8 be placed on patella, so, by the anglec of rotation of the position and measuring stick 7 of measuring the measurement slide block 6 of patient two lower limb respectively, effectively can measure and obtain the knee joint antero posterior axis of patient after injury of cruciate ligament of knee joint to slackness and knee joint circumference slackness.Measuring on slide block 6 by being arranged on by measuring stick 7 rotatable engagement, can ensure that gage outfit 8 is constant relative to the distance of its center of rotation, the precision namely measuring the knee joint circumference slackness obtained is higher.
Further, the bottom surface of measuring seat 1 is provided with the sliding track mechanism I for regulating locating support 4 position, sliding track mechanism I comprises the slide rail I be arranged on measuring seat and the slide block I9 coordinated with slide rail, locating support 4 rotatable engagement is arranged on slide block I9, adopt the measuring seat 1 of this structure, the distance between locating support 4 and summit positioning head 3 can be regulated, make the Stable knee joint shin offset amount measurement device of the present embodiment can meet patient's instructions for use of different lower limb type length.
Further, locating support 4 is provided with the levelling gear for regulating the distance between ankle positioning head 5 and measuring seat 1 bottom surface, the levelling gear of the present embodiment is be arranged on for installing the adjusting rod 10 of ankle positioning head 5 on locating support 4, and adjusting rod 10 is length-adjustable expansion link.Adopt the locating support 4 of this structure, can be used in regulating the distance between ankle positioning head 5 and measuring seat 1 bottom surface, and then regulate measuring seat 1 relative to the angle of inclination of patient legs, and finally make gage outfit 8 to coordinate with patella accurately.
Further, be provided with the angle scale for measurement bar 7 anglec of rotation between measurement slide block 6 and measuring stick 7, and/or in measuring seat 1, be provided with the electronic goniometer for measurement bar 7 anglec of rotation, in the measuring seat 1 of the present embodiment, be provided with electronic goniometer.The rule for measurement slide block 6 position is provided with between measuring seat 1 and measurement slide block 6, and/or measuring seat 1 is provided with the position sensor for measurement slide block 6 position, in the measuring seat 1 of the present embodiment, be provided with the position of position sensor for measurement slide block 6.Measuring seat 1 is provided with the display screen for display measurement slide block 6 position and measuring stick 7 anglec of rotation.Adopt the Stable knee joint shin offset amount measurement device of this structure, have and measure simply, the advantage of convenient reading.
Further, the side of measuring seat 1 is provided with link for colligation fixing band or hook, and the side of the measuring seat 1 of the present embodiment is provided with link 11, by arranging link 11, can facilitate colligation fixing band, what it is such that measuring seat 1 can be firm is fixed on patient legs.
Adopt the present embodiment Stable knee joint shin offset amount measurement device measure knee joint circumference slackness and antero posterior axis as follows to the method for slackness:
1, the supplemental characteristic of not injured leg is measured: coordinated with the ankle of not injured leg respectively by two ankle positioning heads 5, coordinated with knee joint tibial tuberosity by summit positioning head 3, then utilize the instruments such as bandage to be fixed on leg by measuring seat 1;
2, the gage outfit 8 be arranged on measuring stick 7 is pressed abd fixed on patella, suitable power is applied to measuring seat 1, injured shank is moved relative to thigh, reads angle value that now swingle 3 deflects relative to reference position and measure slide block 6 in the position of measuring seat 1;
3, measure the supplemental characteristic of injured leg: after locating support 4 is rotated 180 °, two ankle positioning heads 5 are coordinated with the ankle of injured leg respectively, summit positioning head 3 is coordinated with knee joint tibial tuberosity, and measuring seat 1 is fixed on leg;
4, the gage outfit 8 be arranged on measuring stick 7 is compressed on the patella of injured leg, suitable power is applied to measuring seat 1, injured shank is moved relative to thigh, and drive and measure slide block 6 and move and drive measuring stick 7 to rotate, and read the angle value and the measurement position of slide block 6 on measuring seat 1 that measuring stick 7 deflect relative to reference position;
5, the circumferential slackness after injury of cruciate ligament of knee joint and antero posterior axis is calculated to slackness by the data of front and back two-sided measurement.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (10)
1. a Stable knee joint shin offset amount measurement device, is characterized in that: comprise measuring seat, and described measuring seat is provided with the measuring mechanism and detent mechanism of measuring knee joint tibial side-play amount;
Described detent mechanism comprises three-point positioning mechanism and flexible detent mechanism, and described flexible detent mechanism comprises the flexible alignment layers by distortion self adaptation patient lower limb type, and described flexible alignment layers is fixedly installed on described measuring seat on the bottom surface of patient legs side; Described three-point positioning mechanism comprises and to be fixedly installed on described measuring seat bottom surface and the summit positioning head coordinated with knee joint tibial tuberosity and rotatable engagement are arranged on the locating support on described measuring seat bottom surface, and described locating support is provided with two and coordinates with two ankle joint respectively and the adjustable ankle positioning head of spacing distance;
Described knee joint tibial side-play amount comprises kneed antero posterior axis to slackness and circumferential slackness, and described measuring mechanism comprises for measuring knee joint antero posterior axis to the axial measuring mechanism of slackness and the circumferential measuring mechanism for measuring knee joint circumference slackness; Described axial measuring mechanism comprises the measurement slide block that single-degree-of-freedom is slidably installed on described measuring seat front end face, described circumferential measuring mechanism comprises rotatable engagement and is arranged on measuring stick on described measurement slide block, described measuring stick is provided with the gage outfit coordinated with patella towards kneed one end, described measuring stick relative to the rotating shaft of described measurement slide block perpendicular to the front end face of described measuring seat;
Described measuring seat is also provided with for measuring described measurement slide position and the metering device for measuring the described measuring stick anglec of rotation.
2. Stable knee joint shin offset amount measurement device according to claim 1, it is characterized in that: the bottom surface of described measuring seat is provided with the sliding track mechanism I for regulating described locating support position, described sliding track mechanism I comprises the slide rail I be arranged on described measuring seat and the slide block I coordinated with slide rail, and described locating support rotatable engagement is arranged on described slide block I.
3. Stable knee joint shin offset amount measurement device according to claim 1 and 2, is characterized in that: described locating support is provided with the levelling gear for regulating the distance between described ankle positioning head and described measuring seat bottom surface.
4. Stable knee joint shin offset amount measurement device according to claim 3, it is characterized in that: between described measurement slide block and described measuring stick, be provided with the angle scale for measuring the described measuring stick anglec of rotation, and/or in described measuring seat, be provided with the electronic goniometer for measuring the described measuring stick anglec of rotation.
5. Stable knee joint shin offset amount measurement device according to claim 4, it is characterized in that: be provided with the rule for measuring described measurement slide position between described measuring seat and measurement slide block, and/or described measuring seat is provided with the position sensor for measuring described measurement slide position.
6. Stable knee joint shin offset amount measurement device according to claim 5, is characterized in that: described measuring seat is provided with the display screen for showing described measurement slide position and the measuring stick anglec of rotation.
7. Stable knee joint shin offset amount measurement device according to claim 1 and 2, is characterized in that: the side of described measuring seat is provided with link for colligation fixing band or hook.
8. Stable knee joint shin offset amount measurement device according to claim 1 and 2, is characterized in that: described flexible alignment layers adopts soft rubber to make.
9. Stable knee joint shin offset amount measurement device according to claim 1 and 2, is characterized in that: described gage outfit is provided with the measurement groove coordinated with patella, and described ankle positioning head is provided with the detent coordinated with ankle.
10. Stable knee joint shin offset amount measurement device according to claim 1 and 2, it is characterized in that: in two described ankle positioning heads, one of them ankle positioning head is fixedly mounted on described locating support, and described in another, ankle positioning head is slidably installed on described locating support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310187514.8A CN103239232B (en) | 2013-05-20 | 2013-05-20 | Stable knee joint shin offset amount measurement device |
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| CN201310187514.8A CN103239232B (en) | 2013-05-20 | 2013-05-20 | Stable knee joint shin offset amount measurement device |
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| CN103239232A CN103239232A (en) | 2013-08-14 |
| CN103239232B true CN103239232B (en) | 2015-01-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103519818A (en) * | 2013-10-22 | 2014-01-22 | 山东大学齐鲁医院 | Knee-joint gap balance tester |
| CN103598887B (en) * | 2013-11-30 | 2015-12-16 | 北京华健恒创技术有限公司 | A kind of organism bone-contact formula range unit |
| CN107913065B (en) * | 2017-12-08 | 2021-01-15 | 清华大学 | Three-dimensional joint angle measuring device |
| CN109907774A (en) * | 2019-03-04 | 2019-06-21 | 广州中医药大学第一附属医院 | The device of fixed lower limb body position |
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| CN103370025A (en) * | 2010-12-17 | 2013-10-23 | 捷迈有限公司 | User interface related to a surgical provisional |
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| US8010180B2 (en) * | 2002-03-06 | 2011-08-30 | Mako Surgical Corp. | Haptic guidance system and method |
| CA2647941C (en) * | 2006-03-14 | 2014-03-18 | Jason K. Otto | Prosthetic device and system and method for implanting prosthetic device |
| WO2010068213A1 (en) * | 2008-12-11 | 2010-06-17 | Mako Surgical Corp. | Implant planning using areas representing cartilage |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1312317B1 (en) * | 2001-11-09 | 2004-06-23 | BrainLAB AG | Pivotable arm with passive actuators |
| CN103370025A (en) * | 2010-12-17 | 2013-10-23 | 捷迈有限公司 | User interface related to a surgical provisional |
Non-Patent Citations (1)
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| JP特表2009-529954A 2009.08.27 * |
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