CN212089664U - Femoral condyle four-side osteotome - Google Patents
Femoral condyle four-side osteotome Download PDFInfo
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- CN212089664U CN212089664U CN202020348904.4U CN202020348904U CN212089664U CN 212089664 U CN212089664 U CN 212089664U CN 202020348904 U CN202020348904 U CN 202020348904U CN 212089664 U CN212089664 U CN 212089664U
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Abstract
The utility model provides a thighbone condyle four sides osteotomy ware includes: the bone cutter comprises a bone cutter body, wherein the bone cutter body comprises an upper surface and a lower surface, four bone cutting grooves which are arranged in parallel in the length direction of a groove body are sequentially formed in the bone cutter body, the angle of vertically penetrating through the upper surface and the lower surface is zero, and the penetrating angles of the first bone cutting groove, the second bone cutting groove, the third bone cutting groove and the fourth bone cutting groove are respectively 5 degrees, 45 degrees, -45 degrees and 0 degree; four osteotomy grooves all run through upper surface and lower surface, wherein first, two, three osteotomy grooves run through the one end notch of lower surface and all follow respective cell body length direction and widen a chamfer to both sides slant. Four osteotomy grooves are formed according to the mounting surface of the prosthesis, so that the surface of the femoral condyle of the oscillating saw after being osteotomy through the four osteotomy grooves is completely matched and matched with the mounting surface of the prosthesis; meanwhile, the chamfers are arranged on the first osteotomy groove, the second osteotomy groove and the third osteotomy groove, so that the swing saw has a sufficient swing range in the osteotomy groove, and a doctor can conveniently perform osteotomy operation.
Description
Technical Field
The utility model relates to a femoral joint replacement technical field, in particular to femoral condyle four-side osteotomy device.
Background
The femur condyle osteotomy is an operation for treating paralyzed deformity of thigh and knee, and is mainly characterized in that the damaged knee joint of a patient is replaced by an artificial knee joint which is obtained by bionic design according to the anatomical shape of the knee joint of a normal person; in the process of knee joint replacement surgery, the installation of the femoral osteotome depends on the long nail driven on the osteotome to fix the osteotome and the femur, but the secondary correction is often required by a doctor when the femoral condyle prosthesis is placed due to inaccurate osteotomy precision, and the accuracy of the osteotomy amount cannot be ensured when the existing femoral condyle osteotome module carries out secondary osteotomy, so that more or less osteotomies are caused; and the groove bodies of the osteotomy grooves in the existing osteotomy device are all straight-line through grooves, the swing saw can only swing for 90 degrees in the grooves, the swing space is limited, a doctor can not perfectly cut the whole range of osteotomy of each surface at one time, and can only get rid of the osteotomy device, residual bones which are not completely cut are removed along the end surfaces of the cut bones depending on experience, and great troubles and troubles are brought to the doctor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a thighbone condyle four-side osteotomy device for solve the technical problem that the aforesaid provided.
The embodiment of the utility model provides a thighbone condyle four sides cuts bone ware, it includes: the osteotome comprises an osteotome body, wherein the osteotome body comprises an upper surface and a lower surface, a first osteotome groove, a second osteotome groove, a third osteotome groove and a fourth osteotome groove which are arranged in parallel in the length direction of a groove body are sequentially formed in the osteotome body, the angle of vertically penetrating through the upper surface and the lower surface is zero, the penetrating angle of the first osteotome groove is 5 degrees, the penetrating angle of the second osteotome groove is 45 degrees, the penetrating angle of the third osteotome groove is-45 degrees, the penetrating angle of the fourth osteotome groove is 0 degree, and the second osteotome groove and the upper notch of the third osteotome groove are arranged in an intersecting and communicating manner; four osteotomy grooves all run through upper surface and lower surface, wherein, first, two, three osteotomy grooves run through the one end notch of lower surface and all follow respective cell body length direction and widen a chamfer to both sides slant.
Preferably, the chamfer angle of the second and third osteotomy grooves is larger than the chamfer angle of the first osteotomy groove.
Preferably, the chamfer angle of the first osteotomy groove is 20 °, and the chamfer angle of the second osteotomy groove and the third osteotomy groove is 30 °.
Preferably, the angle broad apex of the second and third osteotomy grooves is the same and higher than the angle broad apex of the first osteotomy groove.
Preferably, the first osteotomy groove, the second osteotomy groove and the third osteotomy groove are all straight osteotomy grooves, and the fourth osteotomy groove is composed of two branch grooves which oppositely extend inwards from two sides of the osteotomy device along the same straight line.
Preferably, all osteotomy grooves penetrate through the notch end position at one end of the upper surface of the osteotomy body and are provided with outward-expanding and inward-concave vortex grooves.
Preferably, the osteotome body is further provided with four groups of fine tuning positioning hole rows which are arranged in a rectangular distribution manner, namely an upper group, a lower group, a left group and a right group, and two groups of fine tuning positioning hole rows which are arranged oppositely in an inclined manner in the four groups of fine tuning positioning hole rows are symmetrically arranged relative to the center point of the diagonal line of the osteotome body; the fine tuning positioning holes in the two groups of fine tuning positioning hole rows which are arranged oppositely up and down are symmetrically arranged relative to the transverse center line of the osteotome body one by one; the fine tuning positioning holes in the two sets of fine tuning positioning hole rows which are oppositely arranged at the left and the right are symmetrically arranged relative to the longitudinal center line of the osteotome body one by one.
Preferably, the arrangement direction of the fine tuning positioning holes in each group of fine tuning positioning hole rows is inclined relative to the length direction of the groove body of the osteotomy groove.
Preferably, the osteotome body is symmetrically provided with left and right fixing holes at two sides, and the extending directions of the left and right fixing holes are symmetrically and oppositely arranged in an inward inclined manner.
Preferably, an observation hole communicated with the side of the first osteotomy groove is formed in one side surface, close to the first osteotomy groove, of the osteotomy device body.
The four-side osteotomy device for the femoral condyle of the utility model is provided with four osteotomy grooves according to the mounting surface of the prosthesis, so that the surface of the femoral condyle after the oscillating saw cuts bones through the four osteotomy grooves is completely matched and matched with the mounting surface of the prosthesis, thereby saving the operation time; simultaneously, one end notch through running through the lower surface in first, second, third osteotomy groove all widens a chamfer to both sides slant along groove body length direction separately for the pendulum saw has sufficient swing range in first, second, third osteotomy groove, makes things convenient for doctor's osteotomy operation, and then makes the doctor can once only perfectly cut the full range of each bone of cutting.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a front view of a four-sided osteotomy device of a femoral condyle in an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2;
fig. 5 is a cross-sectional view taken along line D-D of fig. 2.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The embodiment of the utility model provides a thighbone condyle four sides cuts bone ware, it includes: the osteotome body 1 comprises an upper surface 101 and a lower surface 102, wherein a first osteotome groove 11, a second osteotome groove 12, a third osteotome groove 13 and a fourth osteotome groove 14 which are all arranged in parallel in the length direction of a groove body are sequentially formed in the osteotome body 1, the angle of the first osteotome groove 11 vertically penetrating through the upper surface 101 and the lower surface 102 is zero, the penetrating angle of the first osteotome groove 11 is 5 degrees, the penetrating angle of the second osteotome groove 12 is 45 degrees, the penetrating angle of the third osteotome groove 13 is-45 degrees, the penetrating angle of the fourth osteotome groove 14 is 0 degree, and the upper side notches of the second osteotome groove 12 and the third osteotome groove 13 are arranged in an intersecting and communicating manner; the four osteotomy grooves all penetrate through the upper surface 101 and the lower surface 102, wherein notches at one end, penetrating through the lower surface 102, of the first, second and third osteotomy grooves 11, 12 and 13 are all obliquely wide at two sides along the length direction of the groove body respectively, and are provided with a chamfer.
The four-side osteotome for the femoral condyle is provided with four osteotomy grooves according to the mounting surface of the prosthesis, so that the surface of the femoral condyle cut by the oscillating saw through the four osteotomy grooves is completely matched and matched with the mounting surface of the prosthesis, and the operation time is saved; meanwhile, the notches at one end of the first, second and third osteotomy grooves 11, 12 and 13 penetrating through the lower surface 102 are inclined to two sides along the length direction of the respective groove body to form a chamfer, so that the swing saw has enough swing range in the first, second and third osteotomy grooves 11, 12 and 13, the operation of osteotomy of a doctor is facilitated, and the doctor can perfectly cut off the full range of osteotomy of each surface at one time.
Example 1
As shown in fig. 1, the first, second and third osteotomy grooves 11, 12 and 13 are all straight osteotomy grooves, and the fourth osteotomy groove 14 is composed of two branch grooves oppositely and inwardly extending from two sides of the osteotomy device along the same straight line. Since the femoral anterior condyle and the medial condyle are larger than the prosthesis to be replaced, the oscillating saw needs to have enough swing range in the first, second and third osteotomy grooves 11, 12 and 13, for this reason, as shown in fig. 3 to 5, the notches at one end of the first, second and third osteotomy grooves 11, 12 and 13 penetrating through the lower surface 102 are all obliquely opened with a chamfer at two sides along the length direction of the respective groove bodies; meanwhile, the width of the femoral condyle of the second and third osteotomy grooves 12, 13 is larger than that of the femoral condyle of the first osteotomy groove 11, so that the chamfers of the second and third osteotomy grooves 12, 13 are larger than that of the first osteotomy groove 11, preferably, the chamfer angle of the first osteotomy groove 11 is 20 degrees, the chamfer angle of the second and third osteotomy grooves 12, 13 is 30 degrees, and the angle-widening vertexes of the second and third osteotomy grooves 12, 13 are the same and higher than the angle-widening vertex of the first osteotomy groove 11, so that the pendulum saw can cut a sufficient width in the second and third osteotomy grooves 12, 13. Meanwhile, all the osteotomy grooves penetrate through the end point of the notch at one end of the upper surface 101 of the osteotomy device body 1, and are provided with outward-expanding and inward-concave vortex grooves 103, so that the problem that the swing saw carelessly hits the osteotomy device in the operation process to cause flash or burr to affect repeated use can be avoided.
The osteotome body 1 is further provided with an upper group of fine-tuning positioning holes 15, a lower group of fine-tuning positioning holes 15, a left group of fine-tuning positioning holes 15 and a right group of fine-tuning positioning holes 15 which are arranged in a rectangular distribution manner, the fine-tuning positioning holes in the two groups of fine-tuning positioning holes 15 which are arranged in the upper group of fine-tuning positioning holes 15, the lower group of fine-tuning positioning holes in the left group of fine-tuning positioning holes in the right group of fine-tuning positioning holes in the upper group of fine-tuning positioning holes in the lower group of fine-tuning positioning holes in the upper group of fine-tuning positioning holes in the right group of fine. As shown in fig. 1, each fine adjustment positioning hole row 15 includes 3 abutting portions and fine adjustment positioning holes closely arranged, the arrangement direction of the fine adjustment positioning holes is inclined relative to the length direction of the groove body of the osteotomy groove, the fine adjustment positioning holes provide fine adjustment positioning space for the surgeon to perform fine adjustment operation on the osteotomy device, and the secondary femoral condyle osteotomy correction times caused by inaccurate positioning are reduced.
The osteotome body 1 bilateral symmetry is equipped with left and right fixed orifices 16, the relative inside slope setting of extending direction symmetry of left and right fixed orifices 16. As shown in fig. 1, the osteotome body 1 is symmetrically provided with left and right chamfered surfaces at two sides, the left and right fixing holes 16 are respectively arranged on the left and right chamfered surfaces, and the left and right fixing holes 16 are respectively perpendicular to the left and right chamfered surfaces and symmetrically and inwardly slantwise arranged.
In addition, in order to reduce the weight of the osteotomy device body 1 and facilitate the observation of the osteotomy condition, as shown in fig. 3, an observation hole 17 communicated with the side of the first osteotomy groove 11 is formed on one side surface of the osteotomy device body 1 close to the first osteotomy groove 11.
Adopt when thighbone condyle four sides osteotome ware carries out prosthesis osteotomy installation operation, at first laminate the lower surface 102 of osteotome ware on the thighbone condyle, squeeze into the locating pin in the fine setting locating hole that selects two symmetries to set up in four groups of fine setting locating hole row 15 and fix a position the osteotome ware, if fix a position the back, the doctor finely tunes the osteotome ware as required according to the experience, then take off from the locating pin the osteotome ware, then select the fine setting locating hole suit of suitable another a set of symmetry on the locating pin according to the fine setting angle, accomplish the final location of osteotome ware, then squeeze into the staple in the fixed orifices 16 of osteotome ware both sides.
Accomplish and cut bone ware location back, use the pendulum saw to cut the bone to the thighbone condyle along seting up position, length and the angle in first, two, three, four osteotomy grooves that set up on the bone ware body 1, according to cut the complete matching of thighbone condyle surface after the bone ware cuts the bone and the mounting surface of false body and cut, save operation time.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A femoral condyle four-sided osteotomy device, comprising: the osteotome comprises an osteotome body, wherein the osteotome body comprises an upper surface and a lower surface, a first osteotome groove, a second osteotome groove, a third osteotome groove and a fourth osteotome groove which are arranged in parallel in the length direction of a groove body are sequentially formed in the osteotome body, the angle of vertically penetrating through the upper surface and the lower surface is zero, the penetrating angle of the first osteotome groove is 5 degrees, the penetrating angle of the second osteotome groove is 45 degrees, the penetrating angle of the third osteotome groove is-45 degrees, the penetrating angle of the fourth osteotome groove is 0 degree, and the second osteotome groove and the upper notch of the third osteotome groove are arranged in an intersecting and communicating manner; four osteotomy grooves all run through upper surface and lower surface, wherein, first, two, three osteotomy grooves run through the one end notch of lower surface and all follow respective cell body length direction and widen a chamfer to both sides slant.
2. The femoral condyle four-sided osteotome defined in claim 1, wherein said second and third osteotomy grooves have a chamfer that is greater than the chamfer of the first osteotomy groove.
3. The femoral condyle four-sided osteotome defined in claim 1, wherein said first osteotomy groove has a chamfer angle of 20 ° and said second and third osteotomy grooves have a chamfer angle of 30 °.
4. The femoral condyle four-sided osteotome of claim 1, wherein said second and third osteotomy slots have the same angularly broad apex, both higher than the angularly broad apex of said first osteotomy slot.
5. The femoral condyle four-sided osteotome of claim 1, wherein said first, second and third osteotome grooves are linear osteotome grooves, and said fourth osteotome groove is formed by two branch grooves extending oppositely and inwardly from opposite sides of the osteotome along a same line.
6. The femoral condyle four-sided osteotomy device according to claim 1, wherein all the osteotomy grooves are provided with outward-expanding and inward-concaved spiral grooves at the end positions of the notches at one end of the upper surface of the osteotomy body.
7. The four-sided osteotome of femoral condyle according to claim 1, wherein said osteotome body further comprises four sets of fine tuning positioning hole rows arranged in rectangular distribution, wherein two sets of fine tuning positioning hole rows arranged obliquely and oppositely in said four sets of fine tuning positioning hole rows are arranged symmetrically with respect to the center of diagonal line of said osteotome body; the fine tuning positioning holes in the two groups of fine tuning positioning hole rows which are arranged oppositely up and down are symmetrically arranged relative to the transverse center line of the osteotome body one by one; the fine tuning positioning holes in the two sets of fine tuning positioning hole rows which are oppositely arranged at the left and the right are symmetrically arranged relative to the longitudinal center line of the osteotome body one by one.
8. The femoral condyle four-sided osteotomy device of claim 7, wherein the alignment direction of the fine adjustment positioning holes in each set of fine adjustment positioning hole rows is inclined relative to the length direction of the slot body of the osteotomy groove.
9. The four-sided osteotome of femoral condyle according to claim 1, wherein said osteotome body is symmetrically provided with left and right fixing holes at both sides, and the extending directions of said left and right fixing holes are symmetrically and oppositely and inwardly slantwise arranged.
10. The femoral condyle four-sided osteotome according to claim 1, wherein a side surface of the osteotome body near the first osteotomy groove is provided with an observation hole communicated with a side of the first osteotomy groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020348904.4U CN212089664U (en) | 2020-03-18 | 2020-03-18 | Femoral condyle four-side osteotome |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020348904.4U CN212089664U (en) | 2020-03-18 | 2020-03-18 | Femoral condyle four-side osteotome |
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| CN212089664U true CN212089664U (en) | 2020-12-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712624A (en) * | 2021-09-09 | 2021-11-30 | 苏州市康力骨科器械有限公司 | Cut bone guider |
| CN113995466A (en) * | 2021-10-28 | 2022-02-01 | 北京长木谷医疗科技有限公司 | Tibia osteotomy device and tibia osteotomy guide plate assembly |
| CN113995465A (en) * | 2021-10-28 | 2022-02-01 | 北京长木谷医疗科技有限公司 | Femur osteotomy device and femur osteotomy guide plate assembly |
| CN114469250A (en) * | 2021-12-17 | 2022-05-13 | 中国人民解放军总医院第四医学中心 | Bone cutting guide plate for increasing bone cutting of femur far end in artificial knee joint replacement |
-
2020
- 2020-03-18 CN CN202020348904.4U patent/CN212089664U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712624A (en) * | 2021-09-09 | 2021-11-30 | 苏州市康力骨科器械有限公司 | Cut bone guider |
| CN113995466A (en) * | 2021-10-28 | 2022-02-01 | 北京长木谷医疗科技有限公司 | Tibia osteotomy device and tibia osteotomy guide plate assembly |
| CN113995465A (en) * | 2021-10-28 | 2022-02-01 | 北京长木谷医疗科技有限公司 | Femur osteotomy device and femur osteotomy guide plate assembly |
| CN114469250A (en) * | 2021-12-17 | 2022-05-13 | 中国人民解放军总医院第四医学中心 | Bone cutting guide plate for increasing bone cutting of femur far end in artificial knee joint replacement |
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