CN215994136U - Adjustable thighbone cuts bone apparatus - Google Patents
Adjustable thighbone cuts bone apparatus Download PDFInfo
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- CN215994136U CN215994136U CN202122363651.5U CN202122363651U CN215994136U CN 215994136 U CN215994136 U CN 215994136U CN 202122363651 U CN202122363651 U CN 202122363651U CN 215994136 U CN215994136 U CN 215994136U
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Abstract
The utility model discloses an adjustable thighbone osteotomy instrument, which belongs to the technical field of medical instruments, and comprises a thighbone varus angle adjusting device and a thighbone far-end osteotomy thickness adjusting device, wherein the thighbone valgus angle adjusting device comprises a substrate, the front end surface of the substrate is used for abutting against the outer surface of the thighbone far end, the rear end surface of the substrate is hinged with a varus angle positioning handle, a fan-shaped scale plate is arranged above the valgus angle positioning handle on the substrate, and the thighbone valgus angle adjusting device also comprises a locking structure which can lock the valgus angle positioning handle and the substrate after adjusting the valgus angle; the femur far-end osteotomy thickness adjusting device comprises a support arranged on a base plate, and an osteotomy guide plate adjuster used for adjusting the front-back distance of the osteotomy guide plate relative to the support are arranged on the support. The utility model discloses can carry out thighbone distal end to cut the bone to the physiological phenomenon of turning up internally, satisfy first replacement and repair the replacement once more and cut the bone demand.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially indicate an adjustable thighbone cuts bone apparatus.
Background
The bone that the knee joint replacement in-process need be pathologic change or wearing and tearing is cut the bone and is got rid of, conveniently carries out artificial joint prosthesis's installation, and to conventional crowd's pathological change condition, most artificial joint prosthesis's thighbone distal part thickness is 9mm, and the doctor uses the operation to cut the bone apparatus and carry out the removal of thighbone distal end pathologic change bone according to the condition to cut the thickness that the bone needs to be adjusted the thighbone distal end and cut the bone according to the difference, do the preparation for replacement installation artificial femoral joint.
The knee joint replacement comprises primary replacement and secondary revision replacement, the general osteotomy amount of the conventional primary knee joint replacement is 9mm, ± 2mm, ± 4mm, while the general osteotomy amount of the conventional secondary revision knee joint replacement is 0mm, ± 1mm, ± 2mm, ± 3mm, ± 4mm, the conventional distal osteotomy instrument for the knee joint femur cannot meet the requirement of 0-13mm of the conventional surgical osteotomy, cannot meet the osteotomy requirements of the primary replacement and the secondary revision replacement at the same time, and brings great trouble to doctors.
Human knee joint has the dissection axle and the mechanical axis nonconformity of different degrees in physiological dissection, exists thighbone varus physiology phenomenon promptly, and common thighbone varus degree is 9, and current surgical instruments does not possess the control range of 9 when carrying out thighbone distal end osteotomy, and the back is accomplished in the angle modulation of turning up including while current surgical instruments, and the apparatus angle easily changes in the use, influences the precision of operation osteotomy, causes the artifical joint replacement inaccurate, may influence the operation effect.
Meanwhile, when the knee joint replacement is renovated, the damaged bone surface needs to be renovated and cut after the artificial joint prosthesis is removed, and in reality, the difference between the inner and outer side defects of the femoral condyle is often large, the existing instruments cannot cope with the defects, and the renovation and replacement are difficult to carry out on the distal femoral osteotomy.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can carry out thighbone distal end to cut bone to the physiological phenomenon of turning up internally, satisfy first replacement and the adjustable thighbone apparatus of cutting the bone demand of renovating the replacement once more.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
an adjustable femoral osteotomy instrument comprising a femoral varus angle adjustment device and a distal femoral osteotomy thickness adjustment device disposed above the femoral valgus angle adjustment device, wherein:
the femur internal and external rotation angle adjusting device comprises a base plate, the front end surface of the base plate is used for abutting against the outer surface of the distal end of a femur, the rear end surface of the base plate is hinged with an internal and external rotation angle positioning handle, a fan-shaped scale plate is arranged above the internal and external rotation angle positioning handle on the base plate, and the femur internal and external rotation angle adjusting device also comprises a locking structure which can lock the internal and external rotation angle positioning handle and the base plate after the internal and external rotation angle is adjusted;
the femur far-end osteotomy thickness adjusting device comprises a support arranged on the base plate, and an osteotomy guide plate adjuster used for adjusting the front-back distance of the osteotomy guide plate relative to the support are arranged on the support.
Furthermore, the arc edge of the fan-shaped scale plate is provided with scales and a positioning groove corresponding to the scales, the locking structure comprises a locking piece which is arranged on the inside and outside turning angle positioning handle and can be driven, and the locking piece is provided with a positioning bulge which can be matched with the positioning groove and is used for locking the inside and outside turning angle positioning handle.
Furthermore, the locking piece is a Z-shaped button, the Z-shaped button comprises a front plate, a rear plate and an oblique connecting plate, the front plate is located at the lower position, the rear plate is located at the upper position, the oblique connecting plate is connected with the front plate and the rear plate, the rear end of the front plate is hinged to the inside-outside turning angle positioning handle, a spring is arranged between the rear plate and the inside-outside turning angle positioning handle, and the positioning protrusion is located on the lower surface of the front plate.
Furthermore, the front end of the fan-shaped scale plate is respectively hinged on the inside and outside turning angle positioning handle and the base plate through a first hinged shaft and a second hinged shaft, when the inside and outside turning angle positioning handle is perpendicular to the base plate, the first hinged shaft is positioned between the hinged shafts of the inside and outside turning angle positioning handle and the base plate and the second hinged shaft, and the three hinged shafts are linearly arranged;
and/or a cushion block is detachably connected to the front end face of the substrate.
Further, the cushion block is a full cushion block matched with the front end face of the substrate or a half cushion block matched with one side of the front end face of the substrate;
and/or a positioning hole is arranged on the front end surface of the substrate, and a positioning column matched with the positioning hole is arranged on the rear end surface of the cushion block;
and/or the substrate is an inverted U-shaped substrate.
Furthermore, the bone cutting guide plate is located the preceding terminal surface of support, bone cutting guide plate regulator is located the rear end face of support, bone cutting guide plate regulator includes the regulator main part and is located the terminal knob of regulator main part, be equipped with the regulation pole on the knob, the regulation pole passes in proper order regulator main part and support drive are connected the bone cutting guide plate.
Furthermore, a vertical fixing hole is formed in the osteotomy guide plate, and a fixing clamp is clamped between the vertical fixing hole and the rear side wall of the osteotomy guide plate;
the sleeve is arranged in the support and the adjuster body in a penetrating mode, one end, close to the support, of the sleeve is hinged to the fixing clamp, the adjusting rod is located in the sleeve, a spiral groove is formed in the adjusting rod, and a protrusion matched with the spiral groove is arranged in the sleeve.
Furthermore, scribed lines are arranged on the circumferential direction of the regulator main body, and scales matched with the scribed lines are arranged on the knob.
Furthermore, a pair of vertical plug holes is arranged on the base plate, and a pair of plug columns matched with the pair of vertical plug holes is arranged on the support.
Furthermore, nail holes arranged along the front-back direction are formed in the bone cutting guide plate.
The utility model discloses following beneficial effect has:
the utility model discloses an adjustable thighbone cuts bone apparatus, including the thighbone internal-external turn angle adjusting device and set up the thighbone distal end who turns up the angle adjusting device top in the thighbone internal-external turn angle adjusting device, the thighbone internal-external turn angle adjusting device includes the locking structure that can lock internal-external turn angle positioning handle and base plate after the internal-external turn angle adjustment, locking structure can lock internal-external turn angle positioning handle and base plate after the internal-external turn angle adjustment is accomplished, the apparatus angle is difficult for taking place the change in the use and influences the precision of operation osteotomy, avoid causing the inaccurate operation effect that influences of artificial joint replacement; thighbone distal end cuts bone thickness adjusting device is including setting up the support on the base plate, is equipped with on the support and cuts the bone baffle regulator that cuts the bone baffle and be used for adjusting the relative support fore-and-aft distance of bone baffle, compares in prior art, the utility model discloses a thighbone distal end cuts bone thickness adjusting device can adjust the thickness that thighbone distal end cut the bone according to the bone needs of cutting of difference, can solve conventional operation and cut bone 0-13 mm's demand, satisfies the bone demand of cutting of first replacement and the replacement of renovating once more simultaneously. The utility model discloses an adjustable thighbone cuts bone apparatus can carry out thighbone distal end to cut the bone to the physiological phenomenon of turning up internally, satisfies first replacement and the replacement of renovating once more and cuts the bone demand.
Drawings
FIG. 1 is a schematic view of the overall structure of the adjustable femoral osteotomy instrument of the present invention;
FIG. 2 is a schematic view of the adjustable femoral osteotomy instrument of the present invention in use;
FIG. 3 is a schematic view of the adjustable device for adjusting the varus and valgus angle of the femur of the adjustable femur osteotomy instrument of the present invention;
FIG. 4 is a side view of the device for adjusting the varus-valgus angle of a femur of the adjustable femoral osteotomy instrument of the present invention;
FIG. 5 is a schematic view of the adjustable device for adjusting the varus-valgus angle of femur and the spacer of the adjustable femoral osteotomy instrument of the present invention;
FIG. 6 is a schematic view of the combination of the femur valgus/varus angle adjusting device and the cushion block in the adjustable femur osteotomy instrument of the present invention;
FIG. 7 is a schematic exploded view of the distal femur osteotomy thickness adjusting device of the adjustable femur osteotomy instrument of the present invention;
FIG. 8 is a cross-sectional view of a distal femur osteotomy thickness adjusting device of the adjustable femoral osteotomy instrument of the present invention;
fig. 9 is a top view of the osteotomy guide of the adjustable femoral osteotomy instrument of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides an adjustable thighbone cuts bone apparatus, as shown in fig. 1-9, including the thighbone internal valgus angle adjusting device 1 and the thighbone distal end that sets up the thighbone internal valgus angle adjusting device 1 top cut bone thickness adjusting device 2, wherein:
the femur internal and external rotation angle adjusting device 1 comprises a base plate 11, the front end surface of the base plate 11 is used for abutting against the outer surface of the far end of a femur 10, the rear end surface of the base plate 11 is hinged with an internal and external rotation angle positioning handle 12, a fan-shaped scale plate 13 is arranged above the internal and external rotation angle positioning handle 12 on the base plate 11, and the femur internal and external rotation angle adjusting device 1 further comprises a locking structure which can lock the internal and external rotation angle positioning handle 12 and the base plate 11 after the internal and external rotation angle is adjusted;
the femur distal end osteotomy thickness adjusting device 2 includes a bracket 21 provided on the base plate 11, and an osteotomy guide 22 and an osteotomy guide adjuster 23 for adjusting an anteroposterior distance of the osteotomy guide 22 with respect to the bracket 21 are provided on the bracket 21.
During the knee joint replacement operation, the varus-valgus angle positioning handle 12 can be firstly pulled to the required varus-valgus angle (namely, the position corresponding to the scale 131 on the fan-shaped scale plate 13), then the locking structure is utilized to lock the varus-valgus angle positioning handle 12 and the base plate 11, then the front end surface of the base plate 11 is abutted against the outer surface of the far end of the femur 10, the base plate 11 and the varus-valgus angle positioning handle 12 are moved to enable the axis of the varus-valgus angle positioning handle 12 to be parallel to the axis of the femur 10, and the adjustment of the valgus angle is completed; when the thickness of the distal femur osteotomy is adjusted, the osteotomy guide plate adjuster 23 is driven to adjust the front-back distance of the osteotomy guide plate 22 relative to the bracket 21, and the osteotomy can be performed after the distance is adjusted to a proper distance.
The utility model discloses an adjustable thighbone cuts bone apparatus, including the thighbone internal-external turn angle adjusting device and set up the thighbone distal end who turns up the angle adjusting device top in the thighbone internal-external turn angle adjusting device, the thighbone internal-external turn angle adjusting device includes the locking structure that can lock internal-external turn angle positioning handle and base plate after the internal-external turn angle adjustment, locking structure can lock internal-external turn angle positioning handle and base plate after the internal-external turn angle adjustment is accomplished, the apparatus angle is difficult for taking place the change in the use and influences the precision of operation osteotomy, avoid causing the inaccurate operation effect that influences of artificial joint replacement; thighbone distal end cuts bone thickness adjusting device is including setting up the support on the base plate, is equipped with on the support and cuts the bone baffle regulator that cuts the bone baffle and be used for adjusting the relative support fore-and-aft distance of bone baffle, compares in prior art, the utility model discloses a thighbone distal end cuts bone thickness adjusting device can adjust the thickness that thighbone distal end cut the bone according to the bone needs of cutting of difference, can solve conventional operation and cut bone 0-13 mm's demand, satisfies the bone demand of cutting of first replacement and the replacement of renovating once more simultaneously. The utility model discloses an adjustable thighbone cuts bone apparatus can carry out thighbone distal end to cut the bone to the physiological phenomenon of turning up internally, satisfies first replacement and the replacement of renovating once more and cuts the bone demand. The utility model discloses the general knee joint is first replaced with the renovation, is applicable to various operations thighbone distal end osteotomy needs.
The utility model discloses in, the following structural style of preferred adoption of locking structure:
as shown in fig. 4-5, the arc-shaped edge of the fan-shaped scale plate 13 is provided with a scale 131 and a positioning groove 132 corresponding to the scale 131, the locking structure comprises a locking member 121 which is arranged on the inside-outside turnover angle positioning handle 12 and can be driven, and the locking member 121 is provided with a positioning projection 1211 which can be matched with the positioning groove 132 for locking the inside-outside turnover angle positioning handle 12.
When locking, the locking member 121 is driven to make the positioning protrusion 1211 on the locking member 121 fall into the positioning groove 132 on the fan-shaped scale plate 13, so as to complete locking; when unlocking, the locking member 121 is driven to separate the positioning projection 1211 on the locking member 121 from the positioning groove 132 on the sector scale plate 13, and the locking is released. In the embodiment shown in the figures, the arc-shaped edge of the fan-shaped scale plate 13 is provided with scales 131 of + -3, + -5, + -7, + -9. FIG. 3 (b) is a schematic view of the femoral valgus angle adjustment apparatus at the beginning; FIG. 3 (a) is a schematic view of the device for adjusting the varus-valgus angle of femur at-9 degrees;
fig. 3 (c) is a schematic view of the femoral varus-valgus angle adjustment device at +9 degrees.
To achieve quick locking and unlocking, the locking member 121 preferably has the following structure:
as shown in fig. 1 and 4, the locking member 121 is a Z-shaped button, the Z-shaped button includes a front plate 1212 located at a lower position, a rear plate 1213 located at an upper position, and an inclined connecting plate 1214 connecting the front plate 1212 and the rear plate 1213, the rear end of the front plate 1212 is hinged to the inside-outside tilt angle positioning handle 12, a spring 1215 is provided between the rear plate 1213 and the inside-outside tilt angle positioning handle 12, and a positioning projection 1211 is provided on a lower surface of the front plate 1212.
When unlocking, the rear plate 1213 of the Z-shaped button is pressed, the spring 1215 is compressed, the positioning projection 1211 positioned on the lower surface of the front plate 1212 is separated from the positioning groove 132 on the fan scale plate 12, the locking is released, and the inward-outward turning angle positioning handle 12 can be pulled to the required inward-outward turning angle; when locking, the back plate 1213 of the Z-shaped button is released, the spring 1215 expands to allow the positioning projection 1211 on the lower surface of the front plate 1212 to drop into the positioning groove 132 on the fan scale plate 13, thereby achieving locking.
It will be appreciated that the locking structure and the locking member may adopt other forms, besides the above-mentioned forms, which are easily accessible to those skilled in the art, for example, the locking structure may be directly provided at the hinge joint of the inside-out angle positioning handle 12 and the base plate 11, and the locking structure may adopt a latch lock or a cam lock, etc.; for another example, the locking member may be a slider provided on the inside-outside rotation angle positioning handle to be movable forward and backward, a positioning projection provided at a front end of the slider, or the like.
As shown in fig. 3, the front end of the sector-shaped scale plate 13 is hinged to the inside-outside turning angle positioning handle 12 and the base plate 11 through the first hinge shaft 133 and the second hinge shaft 132, respectively, and when the inside-outside turning angle positioning handle 12 is perpendicular to the base plate 11 (shown in fig. 3 (b)), the first hinge shaft 133 is located between the inside-outside turning angle positioning handle 12 and the hinge shaft 122 of the base plate 11 and the second hinge shaft 132, and the three hinge shafts are linearly arranged, so that when the inside-outside turning angle positioning handle 12 is pulled, the sector-shaped scale plate 13 can rotate along with the rotation of the inside-outside turning angle positioning handle 12, thereby facilitating the quick adjustment of the inside-outside turning angle, and facilitating the fixing of the locking member 121 on the positioning groove 132 at the edge of the sector-shaped scale plate 13.
As shown in fig. 5-6, to facilitate abutment of the base plate 11 against the outer surface of the distal end of the femur (i.e., the distal osteotomy surface of the femur), and to facilitate re-osteotomy of the femur according to clinical needs, a spacer 14 is preferably removably attached to the anterior surface of the base plate 11. According to the internal and external side defect condition of the femur, the thickness L of the cushion block 14 can be 1-5mm, so that the internal and external turning angle regulator can be attached to the distal osteotomy surface of the femur, and the femur can be conveniently resected according to clinical needs. The cushion block 14 can be a full cushion block 141 matched with the front end face of the base plate 11 or a half cushion block 142 matched with a single side of the front end face of the base plate 11, and the full cushion block 141 and the half cushion block 142 with different thicknesses can be selected to supplement the defect conditions of different medial and lateral femoral condyle sclerotins, so that the revision replacement of the distal femur osteotomy is facilitated, and the base plate 11 can provide stable support for the osteotomy guide plate 22 under the correct medial and lateral angulation.
The detachable connection can be realized by the conventional technique in the art, for example, the front end surface of the substrate 11 is provided with a positioning hole 111, and the rear end surface of the spacer 14 is provided with a positioning post 143 matching with the positioning hole 111. The base plate 11 is preferably an inverted U-shaped base plate to better conform to the shape of the outer surface of the distal end of the femur 10 and to reduce the weight of the base plate 11.
To adjust the fore-aft distance of the bone cutting guide 22 relative to the frame 21, the bone cutting guide adjuster 23 may take various configurations as will be apparent to those skilled in the art; however, for the convenience of implementation, the present invention preferably adopts the following structural form:
as shown in fig. 1-2 and 7, the bone cutting guide 22 is located on the front end surface of the bracket 21, the bone cutting guide adjuster 23 is located on the rear end surface of the bracket 21, the bone cutting guide adjuster 23 includes an adjuster body 231 and a knob 232 located at the end of the adjuster body 231, an adjusting rod 233 is provided on the knob 232, and the adjusting rod 233 passes through the adjuster body 231 and the bracket 21 in sequence to drive the bone cutting guide 22.
When the bone cutting guide plate is used, the knob 232 is rotated, the knob 232 drives the adjusting rod 233 to rotate, the adjusting rod 233 drives the bone cutting guide plate 22 to move back and forth, and then the front and back distance of the bone cutting guide plate 22 relative to the support 21 is adjusted.
As shown in FIGS. 1 and 9, in order to facilitate replacement of the osteotomy guide 22 of different specifications, the osteotomy guide 22 may be provided with a vertical fixing hole 221, and the fixing clip 24 is clamped between the vertical fixing hole 221 and the rear side wall of the osteotomy guide 22.
In order to facilitate the adjustment of the position of the osteotomy guide plate 22, various structural forms can be adopted, which are easily thought by those skilled in the art, for example, the adjusting rod is a screw rod, a threaded hole matched with the screw rod can be arranged in the main body of the adjuster, and the like; however, in order to improve the overall firmness, the present invention preferably adopts the following structural form:
as shown in fig. 7, a sleeve 234 is disposed through the bracket 21 and the adjuster body 231, one end of the sleeve 234 near the bracket 21 is hinged to the fixing clip 24 (at this time, the end of the adjusting rod 233 is not used to directly drive the connecting osteotomy guide 22, but the sleeve 234 is used to drive the connecting osteotomy guide 22), the adjusting rod 233 is disposed in the sleeve 234, the adjusting rod 233 is provided with a spiral groove 2331, and the sleeve 234 is provided with a protrusion 2341 matching with the spiral groove 2331. When the bone cutting guide plate is used, the knob 232 is rotated, the knob 232 drives the adjusting rod 233 to rotate, the spiral groove 2331 in the adjusting rod 233 is matched with the protrusion 2341 in the sleeve 234, the sleeve 234 can move back and forth, the fixing clamp 24 on the sleeve 234 can move back and forth, and the front and back distance of the bone cutting guide plate 22 relative to the support 21 is further adjusted.
Furthermore, the regulator body 231 may be provided with a scale line 2311 in the circumferential direction, and the knob 232 may be provided with a scale 2321 matched with the scale line 2311, so as to precisely adjust the front-back distance of the osteotomy guide plate 22 relative to the bracket 21.
In order to accurately position the bracket 21, a pair of vertical insertion holes 112 may be formed in the base plate 11, and a pair of insertion posts 211 matched with the pair of vertical insertion holes 112 is formed in the bracket 21. The osteotomy guide 22 may be provided with nail holes 222 arranged in an anterior-posterior direction, so that the position of the nail holes 222 may be used to easily adjust the amount of distal femur osteotomy. In the embodiment shown in FIG. 9, the osteotomy guide 22 has 0mm, + -2 mm, +3mm, +4mm nail holes 222 for clinical purposes, where 224 is a 0mm locating nail hole; reference numeral 223 denotes a guide groove for mounting a osteotome on the osteotomy guide 22 to ensure the stability of the osteotomy.
To sum up, the utility model provides an inside and outside angle adjusting device turns up the angle regulation that the angle is 9 in can carrying out according to patient's knee joint anatomical feature, makes the plane and the femoral medullary cavity that the distal end was cut the bone at the correct within range, ensures the accuracy of artifical joint femoral condyle installation angle, satisfies conventional operation needs. The utility model provides a thighbone distal end cuts bone thickness adjusting device drives through rotating the knob and cuts bone baffle back-and-forth movement, can reach 0-13 mm's the regulation of cutting bone thickness H, is applicable to first knee joint replacement and the bone regulation needs of cutting of renovating knee joint replacement once more, satisfies clinical operation needs.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An adjustable femoral osteotomy instrument comprising a femoral varus angle adjustment device and a distal femoral osteotomy thickness adjustment device disposed above the femoral valgus angle adjustment device, wherein:
the femur internal and external rotation angle adjusting device comprises a base plate, the front end surface of the base plate is used for abutting against the outer surface of the distal end of a femur, the rear end surface of the base plate is hinged with an internal and external rotation angle positioning handle, a fan-shaped scale plate is arranged above the internal and external rotation angle positioning handle on the base plate, and the femur internal and external rotation angle adjusting device also comprises a locking structure which can lock the internal and external rotation angle positioning handle and the base plate after the internal and external rotation angle is adjusted;
the femur far-end osteotomy thickness adjusting device comprises a support arranged on the base plate, and an osteotomy guide plate adjuster used for adjusting the front-back distance of the osteotomy guide plate relative to the support are arranged on the support.
2. The adjustable femoral osteotomy instrument of claim 1, wherein the arcuate edge of the sector scale plate is provided with a scale and a positioning groove corresponding to the scale, the locking structure comprises a locking member which is arranged on the varus-valgus angle positioning handle and can be driven, and the locking member is provided with a positioning protrusion which can be matched with the positioning groove for locking the valgus-valgus angle positioning handle.
3. The adjustable femoral osteotomy instrument of claim 2, wherein said locking member is a Z-button including a lower anterior plate, an upper posterior plate, and a diagonal web connecting said anterior and posterior plates, a posterior end of said anterior plate hingedly connected to said varus-valgus angle positioning handle, a spring disposed between said posterior plate and said varus-valgus angle positioning handle, and said positioning boss located on a lower surface of said anterior plate.
4. The adjustable femoral osteotomy instrument of claim 2, wherein said sector scale plate has a front end hinged to said varus angle positioning handle and to said base plate by a first hinge axis and a second hinge axis, respectively, said first hinge axis being located between said varus angle positioning handle and said base plate hinge axis and said second hinge axis and said three hinge axes being aligned when said valgus angle positioning handle is perpendicular to said base plate;
and/or a cushion block is detachably connected to the front end face of the substrate.
5. The adjustable femoral osteotomy instrument of claim 4, wherein the block is a full block mated to an anterior face of the base plate or a half block mated to a single side of the anterior face of the base plate;
and/or a positioning hole is arranged on the front end surface of the substrate, and a positioning column matched with the positioning hole is arranged on the rear end surface of the cushion block;
and/or the substrate is an inverted U-shaped substrate.
6. The adjustable femoral osteotomy instrument of one of claims 1-5, wherein said osteotomy guide is positioned on a front face of said housing, said osteotomy guide adjustment is positioned on a rear face of said housing, said osteotomy guide adjustment comprises an adjustment body and a knob positioned at a distal end of said adjustment body, said knob having an adjustment rod thereon, said adjustment rod being drivingly coupled to said osteotomy guide through said adjustment body and housing in sequence.
7. The adjustable femoral osteotomy instrument of claim 6, wherein said osteotomy guide plate has a vertical fixation hole therein, said vertical fixation hole and a posterior wall of said osteotomy guide plate having a fixation clamp therebetween;
the sleeve is arranged in the support and the adjuster body in a penetrating mode, one end, close to the support, of the sleeve is hinged to the fixing clamp, the adjusting rod is located in the sleeve, a spiral groove is formed in the adjusting rod, and a protrusion matched with the spiral groove is arranged in the sleeve.
8. The adjustable femoral osteotomy instrument of claim 6, wherein said adjuster body defines a circumferential groove, said knob defining a scale that mates with said groove.
9. The adjustable femoral osteotomy instrument of claim 6, wherein said base plate defines a pair of vertical engagement holes, and said bracket defines a pair of engagement posts that cooperate with said pair of vertical engagement holes.
10. The adjustable femoral osteotomy instrument of claim 6, wherein said osteotomy guide defines nail holes arranged in an anterior-posterior direction.
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|---|---|---|---|
| CN202122363651.5U CN215994136U (en) | 2021-09-28 | 2021-09-28 | Adjustable thighbone cuts bone apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122363651.5U CN215994136U (en) | 2021-09-28 | 2021-09-28 | Adjustable thighbone cuts bone apparatus |
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| CN215994136U true CN215994136U (en) | 2022-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114848083A (en) * | 2022-05-10 | 2022-08-05 | 北京市春立正达医疗器械股份有限公司 | Osteotomy guider |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114848083A (en) * | 2022-05-10 | 2022-08-05 | 北京市春立正达医疗器械股份有限公司 | Osteotomy guider |
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