CN103932795A - Femur tunnel shifting disk type locator for anterior cruciate ligament reconstruction under arthroscope - Google Patents
Femur tunnel shifting disk type locator for anterior cruciate ligament reconstruction under arthroscope Download PDFInfo
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- CN103932795A CN103932795A CN201410145192.5A CN201410145192A CN103932795A CN 103932795 A CN103932795 A CN 103932795A CN 201410145192 A CN201410145192 A CN 201410145192A CN 103932795 A CN103932795 A CN 103932795A
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Abstract
The invention discloses a femur tunnel shifting disk type locator for anterior cruciate ligament reconstruction under an arthroscope. A femur tunnel is located according to the distance and angle between a femur physiological mark point measured before surgery and the position of a femur tunnel which needs establishing. The locator comprises an axis hook rod, a fixing portion, an outwards-rotating shifting disk set and an inwards-rotating shifting disk set, wherein the front end of the axis hook rod is provided with a hook, the fixing portion is used for fixing the axis hook rod, and the outwards-rotating shifting disk set and the inwards-rotating shifting disk set are coaxially mounted on the axis hook rod in a sleeved mode. The inwards-rotating shifting disk set is provided with a pointer. The outwards-rotating shifting disk set is provided with a hollow drill bit guide rod. The pointer and the drill bit guide rod are both parallel to the axis hook rod. The distance between the axis of the drill bit guide rod and the axis of the axis hook rod is equal to the distance between the femur physiological mark point measured before surgery and the position of the femur tunnel which needs establishing. The hook is hooked to the physiological mark point, the inwards-rotating shifting disk set is moved axially to make the pointer point to the top line of femur fossa intercondyloidea, and the outwards-rotating shifting disk set is rotated so that the angle between the inwards-rotating shifting disk set and the outwards-rotating shifting disk set can be equal to the angle between the femur physiological mark point measured before surgery and the position of the femur tunnel which needs establishing.. The femur tunnel shifting disk type locator meets the actual demand for locating according to the angle and distance in anterior cruciate ligament reconstruction surgery, and increases the success rate of the surgery.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to Healing in Anterior Cruciate Ligament Reconstruction femur tunnel placement device under a kind of arthroscope.
Background technology
Cross ligament damage is more common in Athletic Injuries In The Knee, the raw joint instability of fecund after damage, laxity of ligament, the diseases of knee joints such as secondary cartilage injury's regression and traumatic arthritis.Therefore rebuild the anterior cruciate ligament of damage, to recover kneed stable and function, be more and more subject to clinician's attention.Along with the development of Medical Technology, Reconstruct anterior cruciate ligament by arthroscopy has become the important method for the treatment of ACL (being anterior cruciate ligament) damage.But the case that Healing in Anterior Cruciate Ligament Reconstruction is unsuccessfully overhauled is also of common occurrence, its reason be mainly ACL rebuild in the location of osseous tunnel incorrect.This just requires clinician more to pay attention to the individuation difference of patient's anterior cruciate ligament position, locate more accurately osseous tunnel position, thereby maximum possible realizes Anatomical Reconstruction anterior cruciate ligament.Traditional localization method mainly relies on the experience of clinician under arthroscope to carry out the location in tunnel, also has some doctors utilize through tibial tunnel femur tunnel, location and utilize some tool positioned etc.But it has ignored the individuation difference of patient's anterior cruciate ligament position, therefore localized tunnel position causes the failure of performing the operation accurately.Along with the appearance of double source CT technology, we can observe the marking of anterior cruciate ligament stop more clearly on CT sheet, and we can utilize a physiology gauge point on femur, measure distance and the angle of this point to the marking, thereby can accurately locate in the preoperative anterior cruciate ligament femur tunnel location, but create femur tunnel in arthrocsopic surgery time, not instrument or substitute technology can not complete according to the data of this preoperative measurement the foundation in tunnel for we, so need a positioner that can use in arthroscopic surgery and knee joint small space.
Summary of the invention
The object of this invention is to provide the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under a kind of arthroscope, under arthroscope, accurately locate femur tunnel location according to preoperative measurement data, avoid because locating the inaccurate failure that causes operation.
In order to realize above-mentioned task, the technical solution used in the present invention is:
The femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under a kind of arthroscope, this localizer comprises the axle shank of front end with hook, for the fixed part of fixed axis shank, concentric is sleeved on outer transfer dish group and the interior transfer dish group on axle shank, wherein interior transfer dish group is provided with pointer, outer transfer dish group is provided with hollow drill guide bar, pointer, drill guide bar is all parallel to the setting of axle shank, catch on physiology gauge point with hook, , femur physiology gauge point is distal femur and femoral bone pulley joining, this joining is positioned on knee joint fossa intercondylaris femoris top line, the distance between axles of drill guide bar and axle shank equals the distance between femur physiology gauge point and the femur tunnel location of needs foundation, in mobile vertically, transfer dish group, by pointer directing to fossa intercondylaris femoris top line, is rotated outer transfer dish group and is made to reach between interior transfer dish group and the outer transfer dish group angle between line and the knee joint fossa intercondylaris femoris top line of femur tunnel location, femur physiology gauge point that need to foundation.
Further, described outer transfer dish group is included in driver plate after the circle that is provided with angle index on circumference, the axle center place of rear driver plate offers the through hole for described axle shank is installed, the axial line that is parallel to rear driver plate on rear driver plate arranges described drill guide bar, the front end of drill guide bar is connected with the ring for fixing corresponding with through hole by connecting rod, is parallel to the groove that passes through that being axially processed with of drill guide bar coordinates with described pointer on connecting rod.
Further, described interior transfer dish group comprises that circumference is provided with the front driver plate of angle index, and the axle center place of front driver plate is consolidated with the hollow axis pole matching with described through hole perpendicular to front driver plate, and axostylus axostyle penetrates front driver plate; Described pointer is cemented on the lateral wall of axostylus axostyle, the length direction of pointer and the axis parallel of axostylus axostyle, and the length of pointer is greater than the length of axostylus axostyle but is less than the length of drill guide bar; Before on front driver plate, the center of driver plate is that the center of circle offers the arcuate groove that penetrates front driver plate, and the width of arcuate groove is greater than the external diameter of drill guide bar.
Further, described axle shank comprises straight-bar, and the front end of straight-bar is provided with hook, and this hook is blunt nosed hook; The rear end of straight-bar is processed with external screw thread, and the total length of axle shank is greater than unofficial biography driver plate group and interior transfer dish group axial length sum.
Further, described fixed part comprises L shaped handle, and eccentric fixed block has removably been installed on handle, is processed with the internal thread hole for installation shaft shank on eccentric fixed block.
Further, the molding angle of described hook is 90 °～135 °.
Further, on the outer wall of described drill guide bar, be axially carved with 0 degree baseline along it.
Further, the number of degrees of the central angle of described arcuate groove are not less than 180 °.
Further, between the axial line of described drill guide bar and rear driver plate axial line, be spaced apart 6～17mm.
Preferably, the radius of rear driver plate and front driver plate, thickness are all identical.
The present invention compared with prior art has following technical characterstic:
Geomery of the present invention is applicable to the needs in arthrocsopic surgery otch and articular cavity space, solve other instruments and cannot enter operative incision and articular cavity small space, and can guide in the disposable tunnel that positions, sets up according to angle and distance, avoid utensil repeatedly to enter the soft tissue injury that operative incision brings, greatly promote operation efficiency, met us according to the actual needs of angle and distance location.The present invention can accurately locate femur tunnel location, has avoided clinician to rely on subjective estimation distance and angle, makes to locate inaccuracy, causes unsatisfied surgical effect.The present invention is in former operation process, before having quantized with experience, feel to choose the method that indicates point, for the comprehensive study of operation of the same type, have larger academic significance.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation that interior transfer dish group and the assembly of outer transfer dish are closed;
Fig. 3 is that outer transfer dish is organized each portion schematic diagram;
Fig. 4 is that interior transfer dish is organized each portion schematic diagram;
Fig. 5 is the each portion of axle shank schematic diagram;
Fig. 6 is eccentric fixed block and handle schematic diagram;
Fig. 7 is axle shank front end enlarged drawing;
Fig. 8 is simulating cut line position figure in femur position in CT;
Fig. 9 is the medial wall bone three-dimensional stereo model of femoral lateral condyle;
Figure 10 is applicable to single bundle ACL to rebuild schematic diagram;
Figure 11 is applicable to two-beam ACL to rebuild schematic diagram;
Figure 12 is the O point location drawing;
Number in the figure representative: 10-handle, 20-eccentric fixed block, 21-fixed station, 22-internal thread hole, 23-trip bolt, 30-rear driver plate, 31-drill guide bar, 32-ring for fixing, 33-by groove, 34-connecting rod, 35-through hole, 36-0 degree baseline, 40-front driver plate, 41-pointer, 42-axostylus axostyle, 43-arcuate groove, 50-straight-bar, 51-hook, 52-external screw thread;
Detailed description of the invention
The present invention needs to carry out in the preoperative the collection of necessary data in use.While in the preoperative joint part being carried out to CT scan, can on CT sheet, observe the marking of anterior cruciate ligament stop.By the relative position relation of physiology gauge point and this marking on a femur, utilize this localizer can accurately locate this marking point.
In the time that this localizer uses, the required femur physiology gauge point of using, refer to distal femur and femoral bone pulley joining, as 0 point in Figure 10, Figure 11 and Figure 12, this point is positioned at knee joint fossa intercondylaris femoris top line (Blumensaat line, be called for short BL line) upper, i.e. the extended line of distal femur rear side cortex and Blumensaat line joining.As the BL line in Figure 10, Figure 11.On the CT sheet obtaining by double source CT scanning technique in the preoperative, distance between the femur tunnel (marking of anterior cruciate ligament stop) of measuring this physiology gauge point and need to set up, and angle between line and the Blumensaat line of femur tunnel, femur physiology gauge point, in operation by this localizer using physiology gauge point and Blumensaat line as with reference to benchmark, can accurately provide distance and angle, set up position thereby determine femur tunnel.
Apparatus of the present invention comprise the axle shank of front end with hook 51, and as shown in Figure 5, axle shank comprises straight-bar 50, and the front end of straight-bar 50 is blunt nosed hook 51, and blunt nosed hook 51 can be avoided the scuffing to tissue; The rear end of straight-bar 50 is processed with external screw thread 52, and this external screw thread 52 can be arranged on axle shank on fixed part by the mode being spirally connected, easy accessibility.The total length of axle shank is greater than unofficial biography driver plate group and interior transfer dish group axial length sum, when outer transfer dish group and interior transfer dish group are pressed close to, device foremost for hook 51; The molding angle of the hook 51 on axle shank is 90 °～135 °, is preferably 120 °, and this is that inventor has consulted the optimal angle that a large amount of surgery informations provides, and can make this device enter at leisure measured zone, and can not cause the impact on the number of degrees.
The end of axle shank is arranged on fixed part, as Fig. 6, in this example, fixed part comprises L-type handle 10, on handle 10, the front end on shorter one side is provided with eccentric fixed block 20, eccentric fixed block 20 is removably connected with handle 10 by trip bolt 23, and trip bolt 23 is through the axle center place of eccentric fixed block 20.Eccentric fixed block 20 is cylindric, is consolidated with cylindrical fixed station 21 on its side, is processed with and the internal thread hole 22 of eccentric fixed block 20 axially parallels in fixed station 21, and this internal thread hole 22 coordinates with the external screw thread 52 on straight-bar 50, installation shaft shank.
On axle shank, concentric is set with outer transfer dish group and interior transfer dish group, as shown in Figures 2 to 4:
Outer transfer dish group comprises a circular rear driver plate 30, and its overall appearance is round pie, on the circumference of rear driver plate 30, is provided with angle index, is provided with through hole 35 at its axle center place, and this through hole 35 is for installation shaft shank.After assembling, the straight-bar 50 on axle shank passes through from this through hole 35.On rear driver plate 30, be also provided with drill guide bar 31, the axis parallel of the axial and rear driver plate 30 of drill guide bar 31; Drill guide bar 31 is a hollow round bar, and its effect is behind location, from drill guide bar 31, through long drill bit, sets up femur tunnel.The front end of drill guide bar 31 is provided with the ring for fixing corresponding with through hole 35 32 by connecting rod 34, and correspondence refers to this ring for fixing 32 and the 31 coaxial inner conductor settings of drill guide bar, and the internal diameter of ring for fixing 32 is identical with drill guide bar 31 internal diameters; Between drill guide bar 31 and rear driver plate 30 axial lines, be spaced apart 6～17mm, in the time that reality is used after transfer dish group arrange multiplely, according to unit length, as 1mm, 0.5mm, be set to a series.Asian demand size has been contained at the interval of 6～17mm substantially, chooses the outer transfer dish group of different size according to the different situation of patient.This interval is the distance between femur physiology gauge point and the femur tunnel of needs foundation.
Interior transfer dish group comprises the front driver plate 40 that is provided with angle index on circumference, and front driver plate 40 is preferably identical with rear driver plate 30 overall dimensions; The axle center place of front driver plate 40 is vertically installed with the hollow axis pole 42 through front driver plate 40, and this axostylus axostyle 42 coordinates with the through hole 35 at rear driver plate 30 axle center places, and the straight-bar 50 of axle shank passes from this axostylus axostyle 42.On the lateral wall of axostylus axostyle 42, be provided with pointer 41, the length relation of pointer 41, axostylus axostyle 42 and drill guide bar 31 is: axostylus axostyle 42< pointer 41< drill guide bar 31.The lateral wall of the second half section of pointer 41 and axostylus axostyle 42 is fixed, and first half section is stretched out axostylus axostyle 42 front ends, the axis parallel of its length direction and axostylus axostyle 42; The first half section of pointer 41, through passing through groove 33 on connecting rod, makes the front end of pointer 41 more firm, ensures its axial advancing strictly point-blank.Before on front driver plate 40, driver plate 40 center is that the center of circle offers the arcuate groove 43 that penetrates front driver plate 40, and the effect of arcuate groove 43 is by drill guide bar 31, and therefore the width of arcuate groove 43 is greater than the external diameter of drill guide bar 31; The number of degrees of the central angle of arcuate groove 43 correspondences are for being not less than 180 °, and rear driver plate 30 and front driver plate 40 are due to the restriction of arcuate groove 43 and drill guide bar 31, and both relatively rotate angular range for being not less than 180 °.Due to taking measurement of an angle substantially between 25 °～80 ° of operation, then the angle index scope on angle index and the front driver plate 40 on driver plate 30 is all in the scope of ± 90 °, and the scope of setting covers the needed angle of operation completely, and guarantee left and right lower limb is general.Relative angle between rear driver plate 30 and front driver plate 40 is and line and the Blumensaat line of femur tunnel, femur physiology gauge point between angle.
In this example, the total length of axle shank is 150mm, and the maximum length of travel of pointer 41 is 25mm.After this device assembles, outer transfer dish group, interior transfer dish group all can be rotated around axle shank, and interior transfer dish group can be along the axially-movable of axle shank.Because the length of axle shank is fixed, when front driver plate 40 moves to the front end of axle shank, the front end of the extended axle shank of pointer 41, and move when front driver plate 40 and rear driver plate 30 are fitted backward, the position of pointer 41 is positioned at the rear of linking up with 51 on axle shank, smooth and easy without hindrance while guaranteeing by arthroscope operating walk way.Because joint cavity space is extremely narrow and small, activity space is very limited, and observation space can only be submitted to arthroscope mirror body direction and observe.So farthest optimize the head end mechanism entering in body in the time of design, around the rotation of axle shank, meet the demand of angular surveying and location in driver plate mode.
The positioning principle of this device is such: the preoperative position of having determined femur physiology gauge point O by CT sheet, this point is positioned on BL line, then on CT sheet, can accurately find out the position that need to set up femur tunnel, taking Figure 10 as example, as the H point place in Figure 10.Localizer is required, and what do is according to known BL line and physiology gauge point, locates H point.In this localizer, stretch into and can regard three parts as in patient body: axle shank, drill guide bar 31 and pointer 41, as shown in Figure 7; And pointer 41 can rotate around axle shank.The hook 51 of axle shank front end catches on physiology gauge point O, then by rotating, pushing away and stretch front driver plate 40, pointer 41 front ends are guided and touched on BL line, now link up with 51 front ends and physiology gauge point contact position, pointer 41 and BL line contact position, both lines overlap with BL line, can think BL line.So now, taking O as the center of circle, OH is that radius does circle, and H point drops on circle.Distance between OH has been set in the time that this device assembles, i.e. distance l between the axial line of drill guide bar 31 and rear transfer dish axial line, and rear transfer dish axle center place installation shaft shank, is also therefore the distance of shaft centers of drill guide bar 31 and axle shank.According to the distance of measuring on CT sheet, while selecting rear transfer dish group, distance l between axial line and the rear transfer dish axial line of the drill guide bar 31 of selecting equals OH length, so in the time that the position of axle shank and pointer 41 has been fixed, driver plate 40 before rotating, make the angle between front driver plate 40 and rear driver plate 30 reach the angle of measuring between OH and BL line, now the position of drill guide bar 31 correspondences is just in time H point, the position that femur tunnel is set up.
For the ease of observation and the setting of angle, on the outer wall of drill guide bar 31, be axially carved with 0 degree baseline 36 along it, coordinate with front driver plate 40, rear driver plate 30 and determine the number of degrees.Reading all of data carried out in vitro, and large driver plate design, can make operation and numerical value read lighter, clear, accurate.After location positioning, utilize long drill bit directly by drill guide mouth, seal wire is squeezed into definite position, What You See Is What You Get, without sign, without changing apparatus.Greatly improve order of accuarcy, the raising operation efficiency of operation.This device is without instrument dismounting design, and the use of the operation process of being more convenient for, dismantles medical stainless steel design entirely, meets the demand of instrument cleaning, sterilization, sterilizing completely.
While utilizing the present invention to carry out cruciate ligament reconstruction surgery, the method for femur tunnel placement is as follows:
1. make ACL stop nature marking femur end model
The double source CT scanning initial data of imprinting is imported to the work station (GE, Volume Share2 software) of CT three-dimensional reconstruction.By the whole kneed bone three-dimensional stereo model of the three-dimensional reconstruction function model in work station, knee joint model is cut, remove tibia, and vertically remove condyle in femur (Fig. 8) by intercondylar fossa summit, retain complete femoral lateral condyle 3 D stereo bone model, adjust angle, expose the medial wall of femoral lateral condyle completely.Because the medial wall ACL attachment point of femoral lateral condyle is from different around, there is obvious border, by adjusting gray value, thereby make the natural marking of ACL femur stop more clear, finally retain this pictures (Fig. 9).All initial datas are set up model and are retained picture to measure in strict accordance with the method.
2.ACL femur stop circle is drawn the measurement with distance, angle:
The photo retaining is imported to photo-editing software, on image, organize the different of gray value to enclose picture (as imaginary point circle in Figure 10, Figure 11 is drawn region) to ACL femur stop profile according to the natural marking of ACL femur stop and surrounding bone, according to the size and shape of trace and patient's age, sex, to motion require degree etc. to consider to be divided into be applicable to single bundle ACL and rebuild (Figure 10) and two-beam ACL reconstruction (Figure 11) two groups mark center point (H point in Figure 10; A point and P point in Figure 11), then on picture, draw Blumensaat line.The least significant end of Blumensaat line is O point (distal femur and femoral bone pulley joining, Figure 10, Figure 11, Figure 12), does straight line by O point and H point ﹑ A point, does straight line by A point and P point, Tu10Zhong, and ∠ 1 is the angle of HO and Blumensaat line; In Figure 11, ∠ 3 is the angle of AP and Blumensaat line; ∠ 2 is the angle of AO and Blumensaat line, measures respectively ∠ 1, ∠ 2, the number of degrees of ∠ 3.
In Figure 10, the central point of H finger mark scope; BL refers to Blumensaat line;
In Figure 11, A refers to the central point of AM bundle trace scope, and P refers to the central point of PL bundle trace scope, and BL refers to Blumensaat line.
3, when needing to measure, locating, choose the outer transfer dish group (selecting l=OH, OA or OP) of the axial line distance that is consistent with surgical planning, apparatus is correctly installed.The angle scale center zero graduation of front driver plate 40, rear driver plate 30 is aligned, and by the laminating of two driver plates, pointer 41 contractings are hidden in and on axle shank, link up with 51 rear side, guarantee that head is with minimum state, enter smoothly working region by arthroscope operating walk way.Hook on axle shank 51 is hung over to physiology gauge point O place, rotate front driver plate 40 and rear driver plate 30, and driver plate 40 before promoting, make the forward terminal of pointer 41 on BL line.Driver plate 40 before now rotating, by reading O degree baseline 36, with the angle index of front driver plate 40, makes rotational angle (∠ 1, ∠ 2, ∠ 3) conform to surgical planning, and the position that now drill guide bar 31 is indicated is tunnel creation position.Choose suitable long drill bit, squeeze into femur by drill guide bar 31, take off localizer, complete location.
Inventor's sampling has been carried out measurement of correlation to 69 volunteers, and Back ground Information is as follows:
50 of men, 19 of female; 14～57 years old age, average 29 years old.Single bundle is organized 37 knee joints, and average O point to the distance at ACL femur footprint center is 1.24cm (0.95～1.68cm), and as shown in figure 10,32.6 °～58.2 ° meansigma methodss of ∠ 1 scope are 43.4 °;
As shown in figure 11, two-beam group 32 knee joints, O point to the range averaging of the intrafascicular heart of AM is 0.90cm((0.64～1.20cm), 44.5 ° of ∠ 2 average out to (31.8 °～72.3 °); O point to the range averaging of the intrafascicular heart of PL is 1.48cm (1.11～1.78cm), 47.9 ° of ∠ 3 average out to (39.1 °～59.3 °).
With reference to above data, femur of the present invention tunnel dial-type localizer all can effectively be measured, and has good versatility.
Claims (10)
1. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under an arthroscope, it is characterized in that, this localizer comprise front end with hook (51) axle shank, be sleeved on outer transfer dish group and the interior transfer dish group on axle shank for fixed part, the concentric of fixed axis shank; Interior transfer dish group is provided with pointer (41), and outer transfer dish group is provided with hollow drill guide bar (31), and pointer (41), drill guide bar (31) are all parallel to the setting of axle shank; Catch on femur physiology gauge point with linking up with (51), femur physiology gauge point is distal femur and femoral bone pulley joining, and this joining is positioned on knee joint fossa intercondylaris femoris top line; The distance between axles of drill guide bar (31) and axle shank equals the distance between femur physiology gauge point and the femur tunnel location of needs foundation, in mobile vertically, pointer (41) is directed to fossa intercondylaris femoris top line by transfer dish group, rotates outer transfer dish group and make to reach between interior transfer dish group and the outer transfer dish group angle between line and the knee joint fossa intercondylaris femoris top line of femur tunnel location that needs set up, femur physiology gauge point.
2. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 1, it is characterized in that, described outer transfer dish group is included in driver plate (30) after the circle that is provided with angle index on circumference, the axle center place of rear driver plate (30) offers the through hole (35) for described axle shank is installed, the axial line that is parallel to rear driver plate (30) on rear driver plate (30) arranges described drill guide bar (31), the front end of drill guide bar (31) is connected with the ring for fixing (32) corresponding with through hole (35) by connecting rod (34), what on connecting rod (34), be parallel to that being axially processed with of drill guide bar (31) coordinate with described pointer (41) passes through groove (33).
3. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 2, it is characterized in that, described interior transfer dish group comprises that circumference is provided with the front driver plate (40) of circle of angle index, the axle center place of front driver plate (40) is consolidated with the hollow axis pole (42) matching with described through hole (35) perpendicular to front driver plate (40), axostylus axostyle (42) penetrates front driver plate (40); Described pointer (41) is cemented on the lateral wall of axostylus axostyle (42), the axis parallel of the length direction of pointer (41) and axostylus axostyle (42), and the length of pointer (41) is greater than the length of axostylus axostyle (42) but is less than the length of drill guide bar (31); Before front driver plate (40) is upper, the center of driver plate (40) is that the center of circle offers the arcuate groove (43) that penetrates front driver plate (40), and the width of arcuate groove (43) is greater than the external diameter of drill guide bar (31).
4. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 1, it is characterized in that, described axle shank comprises straight-bar (50), and the front end of straight-bar (50) is provided with described hook (51), and this hook (51) is blunt nosed hook; The rear end of straight-bar (50) is processed with external screw thread (52), and the total length of axle shank is greater than unofficial biography driver plate group and interior transfer dish group axial length sum.
5. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under the arthroscope as described in claim 1 or 4, it is characterized in that, described fixed part comprises L shaped handle (10), eccentric fixed block (20) is removably installed on handle (10), on eccentric fixed block (20), has been processed with the internal thread hole (22) for installation shaft shank.
6. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under the arthroscope as described in claim 1 or 4, is characterized in that, the molding angle of described hook (51) is 90 °～135 °.
7. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 1, is characterized in that, on the outer wall of described drill guide bar (31), is axially carved with 0 degree baseline (36) along it.
8. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 3, is characterized in that, the number of degrees of the central angle of described arcuate groove (43) are not less than 180 °.
9. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 2, is characterized in that, between the axial line of described drill guide bar (31) and rear driver plate (30) axial line, is spaced apart 6～17mm.
10. the femur tunnel dial-type localizer of Healing in Anterior Cruciate Ligament Reconstruction under arthroscope as claimed in claim 3, is characterized in that, radius, the thickness of rear driver plate (30) and front driver plate (40) are all identical.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104146736A (en) * | 2014-08-19 | 2014-11-19 | 雷俊虎 | Orthopaedics department knee joint anterior cruciate ligament dissection reestablishment system and application thereof |
| CN105310754A (en) * | 2015-02-04 | 2016-02-10 | 江苏怡龙医疗科技有限公司 | Constant-thrust and uniform-speed cutting orthopedic electric saw mechanism applicable to surgical robots |
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| CN104146736A (en) * | 2014-08-19 | 2014-11-19 | 雷俊虎 | Orthopaedics department knee joint anterior cruciate ligament dissection reestablishment system and application thereof |
| CN105310754A (en) * | 2015-02-04 | 2016-02-10 | 江苏怡龙医疗科技有限公司 | Constant-thrust and uniform-speed cutting orthopedic electric saw mechanism applicable to surgical robots |
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