CN104013407B - Cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument - Google Patents
Cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument Download PDFInfo
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- CN104013407B CN104013407B CN201410132835.2A CN201410132835A CN104013407B CN 104013407 B CN104013407 B CN 104013407B CN 201410132835 A CN201410132835 A CN 201410132835A CN 104013407 B CN104013407 B CN 104013407B
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- handle frame
- angle
- measuring device
- connecting rod
- bone tunnel
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Abstract
The present invention relates to a kind of cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument, comprise U-shaped handle frame, it is characterized in that: also comprise releasable connection on handle frame in order to make handle frame be fixed on 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, the medial extremity of described handle frame is installed with a taper abutment sleeve, the front end of described taper abutment sleeve is provided with one and locates sheath with the long hollow of measuring device to the heart, the large end of described taper abutment sleeve is connected with one and horizontal plane, rotatable angular surveying substrate, described angular surveying substrate offers curved channel, the measurement plate that a surface has angle index line is vertically installed with in described conduit.Structure of the present invention is simple, practical, simple operation, can noinvasive, effectively, accurately, fast measure and drill through femoral bone tunnel length and angle in advance, be convenient to subsequent medical operation.
Description
Technical field
The present invention relates to a kind of cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument, particularly knee joint forward and backward Cruciate ligament reconstruction art femoral bone tunnel length and angular surveying, belong to medical instruments.
Background technology
Along with high-energy damage, forward and backward due to cruciate ligament patient is in ascendant trend year by year.After ligament injury, affect knee Stability, the later stage will cause meniscus, cartilage injury, accelerate osteoarthritis generation process.Damage cruciate ligament reconstruction surgery amount under arthroscope also to increase thereupon.Operation key point is that drilling through femoral bone tunnel need meet certain length and angle.At present, apparatus relevant to femoral bone tunnel is on the market and first obtains tunnel, rear measurement length of tunnel and angle, and length and angle cannot be gone out, complex operation by one-shot measurement, once after drilling through 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 femoral bone tunnel length and angle 3 D measuring instrument, contribute to solving and effectively cannot carry out the problems such as noinvasive, repeatability, portable measurement to femoral bone tunnel length and angle at present.
Technical program of the present invention lies in:
A kind of cruciate ligaments of knee joint Reconstruction femoral bone tunnel length and angle 3 D measuring instrument, comprise U-shaped handle frame, it is characterized in that: also comprise releasable connection on handle frame in order to make handle frame be fixed on 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, the medial extremity of described handle frame is installed with a taper abutment sleeve, the front end of described taper abutment sleeve is provided with one and locates sheath with the long hollow of measuring device to the heart, the large end of described taper abutment sleeve is connected with one and horizontal plane, rotatable angular surveying substrate, described angular surveying substrate offers curved channel, the measurement plate that a surface has angle index line is vertically installed with in described conduit.
Wherein, described fixation kit comprises the plastics clip be wrapped on shank and the connecting rod be connected to by plastics clip on handle frame, described connecting rod is made up of one section of upper screw rod, one section of lower screw rod and the adjusting nut in order to upper screw rod and lower screw rod to be together in series, wherein go up screw rod upper end thereof on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, realizes connecting rod length variations by adjusting nut direction of rotation difference.
A bearing pulley is installed in the large end face of described taper abutment sleeve, offer in the middle part of bearing one with position length measuring device and the coaxial guide pinhole of alignment pin, described bearing pulley end face is connected with a Vertical dimension connecting rod through a U-shaped connecting rod, and described Vertical dimension connecting rod swings in the middle part of U-shaped bar.
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 forming measuring device motion, is realized fixing between described measuring device and sleeve pipe by a lock-screw.
Described angular surveying substrate is a pair symmetrical halves, wherein realizes hinged by connecting rod bearing between halved body, and two symmetrical halves can be done 0-90 ° and fold, and the lower end of described Vertical dimension connecting rod is connected with a weight.
The invention has the advantages that: structure of the present invention is simple, practical, simple operation, can noinvasive, effectively, accurately, fast measure and drill through femoral bone tunnel length and angle in advance, be convenient to subsequent medical operation.
Accompanying drawing explanation
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 femoral bone tunnel length and angle 3 D measuring instrument, comprise U-shaped handle frame 1, also comprise releasable connection on handle frame in order to make handle frame be fixed on 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, the medial extremity of described handle frame 1 is installed with a taper abutment sleeve 3, the front end of described taper abutment sleeve 3 is provided with one and locates sheath 4 with the long hollow of measuring device to the heart.
The large end of above-mentioned taper abutment sleeve 3 is connected with one and horizontal plane, rotatable angular surveying substrate 5, described angular surveying substrate 5 offers curved channel 6, in described conduit 6, is vertically installed with the measurement plate 7 that a surface has angle index line.
Above-mentioned fixation kit comprises the plastics clip 16 be wrapped on shank and the connecting rod be connected to by plastics clip on handle frame, described connecting rod is made up of one section of upper screw rod 17, one section of lower screw rod 18 and the adjusting nut 19 in order to upper screw rod and lower screw rod to be together in series, wherein go up screw rod upper end thereof on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, realizes connecting rod length variations by adjusting nut direction of rotation difference.
A bearing pulley 8 is installed in the large end face of above-mentioned taper abutment sleeve 3, and offer one in the middle part of bearing pulley 8 with the measuring device of position length and locate the coaxial guide pinhole of sheath 9, described bearing pulley end face is connected with a Vertical dimension connecting rod 14 through a U-shaped connecting rod 15, and described Vertical dimension connecting rod 14 swings in the middle part of U-shaped bar.
The outboard end of above-mentioned handle frame 1 is provided with one in order to install the sleeve pipe 10 of the measuring device of position length, in order to the sliding channel forming measuring device motion, is realized fixing between described measuring device and sleeve pipe by a lock-screw 11.
Above-mentioned angular surveying substrate 5 is a pair symmetrical halves, wherein realizes hinged by connecting rod bearing 12 between halved body, and two symmetrical halves can be done 0-90 ° and fold, and the lower end of described Vertical dimension 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 lateral side of femur, in fossa intercondylaris femoris, correct position inserts the long hollow location sheath on taper abutment sleeve, measuring device tip is made to withstand on lateral side of femur cortex correct position by traverse measurement device, then by screw lock measuring device, femoral bone tunnel length can be known by the graduation mark on dekkor, next, one piece of kirschner guide pin is inserted in the sheath of location, in order to ensure the stability of handle frame, so that follow-up angular surveying, clip and the connecting rod of fixation kit need be utilized, the calf of handle frame and human body is linked together, play the effect of steady top handle frame, then, because measuring device is with on the same straight line of location sheath, substrate is measured by activity, measurement substrate is made to be positioned on coronalplane, now slide measure plate, kirschner guide pin measurement plate on shape at an angle, i.e. kirschner guide pin (femoral bone tunnel) angle on coronalplane.Same method, movable substrate of measuring is in sagittal plane, and the measurement plate that slides can measure kirschner guide pin (femoral bone tunnel) angle on sagittal plane, thus completes femoral bone tunnel angular surveying.
After localized tunnel entry point of the present invention, femoral bone tunnel length, tunnel and coronalplane, sagittal plane angle can be predicted by noinvasive; Convenient adjustment further, thus reduce because of length of tunnel and angle not good enough and cause the incidence rate of reconstruction failure; Acquisition tunnel and linear measure longimetry are synchronously carried out, and reduce repeated workload, raise the efficiency; Preoperative length or the angle drafting acquisition tunnel, is convenient to adjust in art; Taper abutment sleeve and handle frame are fixed as one, the fixing and lateral side of femur face by linear measure longimetry, handled easily; Measuring device and sleeve adopt parallel axes to slide, and additional screws is locked, and avoid measuring the swing between measuring device and handle frame sliding channel on other directions, screw locks stability after increasing location; Angular surveying substrate adopts weight as making correction for direction and the line of force, ensures angular surveying and horizontal plane; Adopt bearing to fix between angular surveying substrate and weight line, do not interfere with each other, realize direction flexible rotating; And measure substrate and measure plate all centered by the sheath heart circular hole of taper abutment sleeve, ensure the accuracy measured; Angular surveying substrate adopts two panels to be respectively 100 tolerance hornworks, and with weight line for axle, can do 0-90 degree mutually and fold, substrate is provided with curved channel (0-90 degree), facilitates vertically disposed measurement plate to slide; Vertically disposed measurement plate and substrate adopt half ring design, reduce and mutually stop probability; Taper abutment sleeve large end face increases bearing pulley device, auxiliary weight line adjustment 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; Measure substrate and measure plate radius and be 5cm, measure the long 1cm of plate base, thick 0.2mm, wide 0.8cm, guarantees vertical stability, guarantees that limbs and measuring device have sufficient space, in order to avoid occur after placing stopping.
The foregoing is only preferred embodiment of the present invention, all equalizations done 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 femoral bone tunnel length and angle 3 D measuring instrument, comprise U-shaped handle frame, it is characterized in that: also comprise releasable connection on handle frame in order to make handle frame be fixed on 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, the medial extremity of described handle frame is installed with a taper abutment sleeve, the front end of described taper abutment sleeve is provided with one and locates sheath with the long hollow of measuring device to the heart, the large end of described taper abutment sleeve is connected with one and horizontal plane, rotatable angular surveying substrate, described angular surveying substrate offers curved channel, the measurement plate that a surface has angle index line is vertically installed with in described conduit.
2. cruciate ligaments of knee joint Reconstruction femoral bone tunnel length according to claim 1 and angle 3 D measuring instrument, it is characterized in that: described fixation kit comprises the plastics clip (16) that is wrapped on shank and plastics clip (16) is connected to the connecting rod on handle frame (1), described connecting rod is by one section of upper screw rod (17), one section of lower screw rod (18) and the adjusting nut (19) in order to upper screw rod and lower screw rod to be together in series form, wherein go up screw rod upper end thereof on handle frame, lower screw rod lower end is articulated with on plastics clip, and two screw rods rotation direction is contrary, connecting rod length variations is realized by adjusting nut direction of rotation difference.
3. cruciate ligaments of knee joint Reconstruction femoral bone tunnel length 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, offer in the middle part of bearing one with location syringe and the coaxial guide pinhole of alignment pin, described bearing pulley end face is connected with a Vertical dimension connecting rod (14) through a U-shaped connecting rod (15), and described Vertical dimension connecting rod (14) swings in the middle part of U-shaped bar.
4. cruciate ligaments of knee joint Reconstruction femoral bone tunnel length 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, be beneficial to the sliding channel forming measuring device motion, realized by a lock-screw fixing between described measuring device and sleeve pipe.
5. cruciate ligaments of knee joint Reconstruction femoral bone tunnel length according to claim 4 and angle 3 D measuring instrument, it is characterized in that: described angular surveying substrate is a pair symmetrical halves, wherein realize hinged by connecting rod bearing (12) between halved body, two symmetrical halves can be done 0-90 ° and fold, and the lower end of described Vertical dimension connecting rod (14) is connected with a weight (13).
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 CN104013407A (en) | 2014-09-03 |
| CN104013407B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913065B (en) * | 2017-12-08 | 2021-01-15 | 清华大学 | Three-dimensional joint angle measuring device |
Citations (7)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012106763A1 (en) * | 2011-02-08 | 2012-08-16 | Prosthexis Pty Ltd | Prosthetic menisci and method of implanting in the human knee joint |
-
2014
- 2014-04-03 CN CN201410132835.2A patent/CN104013407B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| 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 |
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| CN104013407A (en) | 2014-09-03 |
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