CN104013407A - Three-dimensional measuring instrument for length and angle of thighbone tunnel in knee joint cruciate ligament reconstruction - Google Patents
Three-dimensional measuring instrument for length and angle of thighbone tunnel in knee joint cruciate ligament reconstruction Download PDFInfo
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- CN104013407A CN104013407A CN201410132835.2A CN201410132835A CN104013407A CN 104013407 A CN104013407 A CN 104013407A CN 201410132835 A CN201410132835 A CN 201410132835A CN 104013407 A CN104013407 A CN 104013407A
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- angle
- length
- connecting rod
- handle frame
- measuring instrument
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Abstract
The invention relates to a three-dimensional measuring instrument for the length and angle of a thighbone tunnel in knee joint cruciate ligament reconstruction. The three-dimensional measuring instrument comprises a U-shaped handle rack and is characterized by further comprising a fixing assembly, wherein the fixing assembly is detachably connected to the handle rack and used for making the handle rack be fixed to a shank; a movable locating length measurer is arranged at the outside end of the handle rack, and the measurer is provided with scale marks; a conical locating sleeve is fixedly arranged at the inside end of the handle rack; the front end of the conical locating sleeve is provided with a long hollow locating pin, and the center of the locating pin is aligned with the center of the measurer; the big end of the conical locating sleeve is connected with an angle measuring substrate which is perpendicular to the horizontal plane and can rotate freely; the angle measuring substrate is provided with an arc-shaped channel, and a measuring plate with the surface provided with angle index marks is perpendicularly arranged in the channel. The three-dimensional measuring instrument is simple in structure, practical, convenient and fast to operate and capable of measuring the length and angle of the thighbone tunnel to be drilled noninvasively, effectively, accurately and rapidly, thereby facilitating follow-up medical treatment.
Description
Technical field
The present invention relates to a kind of cruciate ligaments of knee joint Reconstruction femur length of tunnel and angle 3 D measuring instrument, particularly the forward and backward Cruciate ligament reconstruction art of knee joint femur length of tunnel and angular surveying, belong to medical instruments.
Background technology
Along with high-energy damage, forward and backward due to cruciate ligament patient is ascendant trend year by year.After ligament injury, affect knee Stability, the later stage will cause meniscus, cartilage injury, accelerate osteoarthritis generation process.Under arthroscope, damage cruciate ligament reconstruction surgery amount also increases thereupon.Operation key point is to drill through femur tunnel and need meets certain length and angle.At present, the apparatus relevant to femur tunnel is and first obtains tunnel on the market, rear measurement length of tunnel and angle, and cannot go out length and angle by one-shot measurement, complex operation, once drill through behind tunnel, measure length and angle not good enough, may be difficult to again drill through new tunnel, repeatable poor.Therefore are, objects that the present invention studies for the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of cruciate ligaments of knee joint Reconstruction femur length of tunnel and angle 3 D measuring instrument, contribute to solve and cannot effectively carry out the problems such as noinvasive, repeatability, portable measurement to femur length of tunnel and angle at present.
Technical program of the present invention lies in:
A kind of cruciate ligaments of knee joint Reconstruction femur length of tunnel and angle 3 D measuring instrument, comprise U-shaped handle frame, it is characterized in that: also comprise that the use of releasable connection on handle frame is so that handle frame is fixed on the fixation kit in calf, the outboard end of described handle frame is provided with a mobilizable position length measuring device, described measuring device is provided with graduation mark, on the medial extremity of described handle frame, be installed with a taper abutment sleeve, the front end of described taper abutment sleeve is provided with one, with measuring device, the long hollow of the heart is located to sheath, on the large end of described taper abutment sleeve, be connected with one vertical with horizontal plane, the angular surveying substrate that can rotate freely, on described angular surveying substrate, offer curved channel, in described conduit, be vertically installed with the measurement plate that a surface has angle index line.
Wherein, described fixation kit comprises being wrapped in the plastics clip on shank and plastics clip is connected in to the connecting rod on handle frame, described connecting rod forms by one section of upper screw rod, one section of lower screw rod and in order to the adjusting nut that upper screw rod and lower screw rod are together in series, wherein going up screw rod upper end is articulated with on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, realize connecting rod length variations by adjusting nut direction of rotation difference.
In the large end face of described taper abutment sleeve, be installed on a bearing pulley, bearing middle part offer one with position length measuring device and the coaxial guide pinhole of alignment pin, described bearing pulley end face is connected with a connecting rod through a U-shaped connecting rod, and described connecting rod swings at U-shaped bar middle part.
The outboard end of described handle frame is provided with one in order to install the sleeve pipe of position length measuring device, in order to the sliding channel that forms measuring device motion, realizes fixing between described measuring device and sleeve pipe by a lock-screw.
Described angular surveying substrate is a symmetrical halves, wherein between halved body, realize by connecting rod bearing hinged, two symmetrical halves can do 0-90 ° folding, the lower end of described connecting rod is connected with a weight.
The invention has the advantages that: the present invention is simple in structure, practical, simple operation, can noinvasive, effectively, accurately, fast measure and drill through in advance femur length of tunnel and angle, is convenient to subsequent medical operation.
Brief description of the drawings
Fig. 1 is the structural representation (without fixation kit) of the embodiment of the present invention.
Fig. 2 is that the A of Fig. 1 is to structural representation.
Fig. 3 is the fixation kit structural representation of the embodiment of the present invention.
Detailed description of the invention
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.
Referring to figs. 1 to Fig. 3, the present invention relates to a kind of cruciate ligaments of knee joint Reconstruction femur length of tunnel and angle 3 D measuring instrument, comprise U-shaped handle frame 1, also comprise that the use of releasable connection on handle frame is so that handle frame is fixed on the fixation kit in calf, the outboard end of described handle frame 1 is provided with a mobilizable position length measuring device 2, described position length measuring device 2 is provided with graduation mark, on the medial extremity of described handle frame 1, be installed with a taper abutment sleeve 3, the front end of described taper abutment sleeve 3 is provided with one, with measuring device, the long hollow of the heart is located to sheath 4.
On the large end of above-mentioned taper abutment sleeve 3, be connected with angular surveying substrate 5 one vertical with horizontal plane, that can rotate freely, on described angular surveying substrate 5, offer curved channel 6, in described conduit 6, be vertically installed with a surface and have the measurement plate 7 of angle index line.
Above-mentioned fixation kit comprises being wrapped in the plastics clip 16 on shank and plastics clip is connected in to the connecting rod on handle frame, described connecting rod forms by one section of upper screw rod 17, one section of lower screw rod 18 and in order to the adjusting nut 19 that upper screw rod and lower screw rod are together in series, wherein going up screw rod upper end is articulated with on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, realize connecting rod length variations by adjusting nut direction of rotation difference.
In the large end face of above-mentioned taper abutment sleeve 3, be installed on a bearing pulley 8, and bearing pulley 8 middle parts offer one with the measuring device of position length and the coaxial guide pinhole 9 of location sheath, described bearing pulley end face is connected with a connecting rod 14 through a U-shaped connecting rod 15, and described connecting rod 14 swings at U-shaped bar middle part.
The outboard end of above-mentioned handle frame 1 is provided with one in order to install the sleeve pipe 10 of measuring device of position length, in order to the sliding channel that forms measuring device motion, between described measuring device and sleeve pipe, realizes fixing by a lock-screw 11.
Above-mentioned angular surveying substrate 5 is a symmetrical halves, wherein between halved body, realize by connecting rod bearing 12 hinged, two symmetrical halves can do 0-90 ° folding, the lower end of described connecting rod 14 is connected with a weight 13.
Specific embodiment of the invention process: the present invention is by holding handle frame, then position length measuring device and sleeve pipe are placed in to lateral side of femur, in fossa intercondylaris femoris, correct position is inserted the long hollow location sheath on taper abutment sleeve, by traverse measurement device, measuring device tip is withstood on lateral side of femur cortex correct position, then by screw lock measuring device, can know femur length of tunnel by the graduation mark on dekkor, next, in the sheath of location, insert one piece of Ke Shi guide pin, in order to ensure the stability of handle frame, so that follow-up angular surveying, need utilize clip and the connecting rod of fixation kit, the calf of handle frame and human body is linked together, play the effect of steady top handle frame, then,, on measuring device and the same straight line of location sheath, measure substrate by activity, making to measure substrate is positioned on coronalplane, now slide and measure plate, Ke Shi guide pin is being measured on plate shape at an angle, i.e. the angle of Ke Shi guide pin (femur tunnel) on coronalplane.Same method, the movable substrate of measuring is in sagittal plane, and the measurement plate that slides can be measured the angle of Ke Shi guide pin (femur tunnel) on sagittal plane, thereby completes the angular surveying of femur tunnel.
After localized tunnel entry point of the present invention, can predict femur length of tunnel, tunnel and coronalplane, sagittal plane angle by noinvasive; Convenient further adjustment, thus reduce because of length of tunnel and the not good enough incidence rate that causes reconstruction failure of angle; Obtain tunnel and linear measure longimetry and synchronously carry out, reduce repeated workload, raise the efficiency; Preoperative length or the angle of obtaining tunnel drafted, is convenient to adjust in art; Taper abutment sleeve and handle frame are fixed as one, by fixing linear measure longimetry and lateral side of femur face, handled easily; Measuring device and sleeve adopt parallel axes to slide, and additional screws locking, avoids measuring the swing in other directions between measuring device and handle frame sliding channel, and screw increases locking stability behind location; Angular surveying substrate adopts weight as making correction for direction and the line of force, ensures that angular surveying is vertical with horizontal plane; Between angular surveying substrate and weight line, adopt bearing to fix, do not interfere with each other, realize direction flexible rotating; And measurement substrate and measurement plate all, centered by the sheath heart circular hole of taper abutment sleeve, ensure the accuracy of measuring; It is respectively 100 tolerance hornworks that angular surveying substrate adopts two, taking weight line as axle, can do mutually 0-90 degree folding, and substrate is provided with curved channel (0-90 degree), facilitates vertically disposed measurement plate to slide; Vertically disposed measurement plate and substrate adopt semi-ring design, reduce and mutually stop probability; On taper abutment sleeve large end face, increase bearing pulley device, auxiliary weight line is adjusted line of force direction; Connecting rod major axis is designed to 17cm, and minor axis is 10cm; Measuring device total length is 8.5cm, with scale 6cm; Long hollow location sheath and taper abutment sleeve total length are 10cm; Measurement substrate and measurement plate radius are 5cm, measure the long 1cm of plate base, thick 0.2mm, and wide 0.8cm, guarantees vertical stability, guarantees that limbs and measuring device have sufficient space, in order to avoid occur stopping after placing.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. a cruciate ligaments of knee joint Reconstruction femur length of tunnel and angle 3 D measuring instrument, comprise U-shaped handle frame, it is characterized in that: also comprise that the use of releasable connection on handle frame is so that handle frame is fixed on the fixation kit in calf, the outboard end of described handle frame is provided with a mobilizable position length measuring device, described measuring device is provided with graduation mark, on the medial extremity of described handle frame, be installed with a taper abutment sleeve, the front end of described taper abutment sleeve is provided with one, with measuring device, the long hollow of the heart is located to sheath, on the large end of described taper abutment sleeve, be connected with one vertical with horizontal plane, the angular surveying substrate that can rotate freely, on described angular surveying substrate, offer curved channel, in described conduit, be vertically installed with the measurement plate that a surface has angle index line.
2. cruciate ligaments of knee joint Reconstruction femur length of tunnel according to claim 1 and angle 3 D measuring instrument, it is characterized in that: described fixation kit comprises being wrapped in the plastics clip on shank and plastics clip is connected in to the connecting rod on handle frame, described connecting rod is by one section of upper screw rod, one section of lower screw rod and the adjusting nut composition in order to upper screw rod and lower screw rod are together in series, wherein going up screw rod upper end is articulated with on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, realize connecting rod length variations by adjusting nut direction of rotation difference.
3. cruciate ligaments of knee joint Reconstruction femur length of tunnel according to claim 2 and angle 3 D measuring instrument, it is characterized in that: in the large end face of described taper abutment sleeve, be installed on a bearing pulley, bearing middle part offer one with locating syringe and alignment pin coaxial guide pinhole, described bearing pulley end face is connected with a connecting rod through a U-shaped connecting rod, and described connecting rod swings at U-shaped bar middle part.
4. cruciate ligaments of knee joint Reconstruction femur length of tunnel according to claim 3 and angle 3 D measuring instrument, it is characterized in that: the outboard end of described handle frame is provided with one in order to install the sleeve pipe of position length measuring device, in order to the sliding channel that forms measuring device motion, between described measuring device and sleeve pipe, realize fixing by a lock-screw.
5. cruciate ligaments of knee joint Reconstruction femur length of tunnel according to claim 4 and angle 3 D measuring instrument, it is characterized in that: described angular surveying substrate is a symmetrical halves, wherein between halved body, realize hinged by connecting rod bearing, two symmetrical halves can be done 0-90 ° and fold, and the lower end of described connecting rod is connected with a weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132835.2A CN104013407B (en) | 2014-04-03 | 2014-04-03 | Cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132835.2A CN104013407B (en) | 2014-04-03 | 2014-04-03 | Cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN104013407A true CN104013407A (en) | 2014-09-03 |
| CN104013407B CN104013407B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410132835.2A Expired - Fee Related CN104013407B (en) | 2014-04-03 | 2014-04-03 | Cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument |
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| CN (1) | CN104013407B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913065A (en) * | 2017-12-08 | 2018-04-17 | 清华大学 | Three-dimensional joint angle measuring device |
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| US5435321A (en) * | 1993-12-10 | 1995-07-25 | E.V.C. | Joint displacement measurement apparatus |
| US5586558A (en) * | 1994-09-02 | 1996-12-24 | Stanley E. Gately | Optimizer measuring unit |
| CN2403379Y (en) * | 1999-08-29 | 2000-11-01 | 阎德强 | Pediculus arcus vertebrae nailing hole measuring device |
| FR2932373A1 (en) * | 2008-06-11 | 2009-12-18 | Lifebone | Bone part's i.e. pelvis, angle and/or length measuring method for installing intramedullary prosthesis, involves measuring angle and/or length at given scale using goniometer, and displaying values of measured angle and length on LCD |
| CN102920460A (en) * | 2012-10-18 | 2013-02-13 | 夏和桃 | Lower limb orthopedic ruler |
| CN203042253U (en) * | 2013-01-31 | 2013-07-10 | 中国人民解放军第三军医大学第一附属医院 | Knee joint tibia offset measuring device |
| US20130312897A1 (en) * | 2011-02-08 | 2013-11-28 | Prosthexis Pty Ltd | Prosthetic menisci and method of implanting in the human knee joint |
| CN203564239U (en) * | 2013-11-13 | 2014-04-30 | 中国人民解放军南京军区福州总医院 | Femoral tunnel length and angle three-dimensional measurement instrument for knee joint cruciate ligament reconstruction |
-
2014
- 2014-04-03 CN CN201410132835.2A patent/CN104013407B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435321A (en) * | 1993-12-10 | 1995-07-25 | E.V.C. | Joint displacement measurement apparatus |
| US5586558A (en) * | 1994-09-02 | 1996-12-24 | Stanley E. Gately | Optimizer measuring unit |
| CN2403379Y (en) * | 1999-08-29 | 2000-11-01 | 阎德强 | Pediculus arcus vertebrae nailing hole measuring device |
| FR2932373A1 (en) * | 2008-06-11 | 2009-12-18 | Lifebone | Bone part's i.e. pelvis, angle and/or length measuring method for installing intramedullary prosthesis, involves measuring angle and/or length at given scale using goniometer, and displaying values of measured angle and length on LCD |
| US20130312897A1 (en) * | 2011-02-08 | 2013-11-28 | Prosthexis Pty Ltd | Prosthetic menisci and method of implanting in the human knee joint |
| CN102920460A (en) * | 2012-10-18 | 2013-02-13 | 夏和桃 | Lower limb orthopedic ruler |
| CN203042253U (en) * | 2013-01-31 | 2013-07-10 | 中国人民解放军第三军医大学第一附属医院 | Knee joint tibia offset measuring device |
| CN203564239U (en) * | 2013-11-13 | 2014-04-30 | 中国人民解放军南京军区福州总医院 | Femoral tunnel length and angle three-dimensional measurement instrument for knee joint cruciate ligament reconstruction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913065A (en) * | 2017-12-08 | 2018-04-17 | 清华大学 | Three-dimensional joint angle measuring device |
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| CN104013407B (en) | 2016-03-02 |
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Granted publication date: 20160302 Termination date: 20170403 |