CN212490276U - Single condyle replacement guide template - Google Patents
Single condyle replacement guide template Download PDFInfo
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- CN212490276U CN212490276U CN202021602668.0U CN202021602668U CN212490276U CN 212490276 U CN212490276 U CN 212490276U CN 202021602668 U CN202021602668 U CN 202021602668U CN 212490276 U CN212490276 U CN 212490276U
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Abstract
The utility model provides a single condyle replacement guide template, which comprises a femur prosthesis guide template, a tibia prosthesis guide template and a plurality of first thin connecting columns; a femoral prosthesis guide groove is formed in the femoral prosthesis guide template; a cover plate is arranged on the outer side surface of the femoral prosthesis guide groove; one side of the cover plate is provided with a pair of guide holes; the upper end of the tibial prosthesis guide template is provided with a tibial prosthesis guide plane; one side of the tibial prosthesis guide plane is provided with a tibial prosthesis longitudinal guide groove; the central axis of the femoral prosthesis guide groove is vertical to the tibial prosthesis guide plane. The utility model has simple structure, is made by 3D printing, is convenient to be attached to the skeleton of a patient, and the axle line of the femoral prosthesis guide groove is vertical to the tibial prosthesis guide plane, thereby ensuring that the implanted femoral prosthesis and the tibial prosthesis are kept vertical, reducing the operation difficulty and improving the operation accuracy; the utility model has simple using method and easy operation, and is beneficial to the operation of the novice or inexperienced operators to be completed smoothly.
Description
Technical Field
The utility model relates to a medical treatment field, concretely relates to unicondylar replacement direction template.
Background
Knee unicondylar replacement, which refers to the resurfacing of only the medial or lateral compartment of the knee, is used primarily to treat osteoarthritis or osteonecrosis confined to a single compartment.
In the knee joint unicondylar replacement art, select fixed platform prosthesis, need implant femoral prosthesis in thighbone lower extreme one side to implant tibial prosthesis in the same side of shin bone upper end, its difficult point of operation lies in:
(1) when the tibial prosthesis is implanted, firstly, diseased tissues are cut at the upper end of a tibia, and a plane is ground for implanting the tibial prosthesis, wherein the plane generally requires that the sagittal position is inclined backwards by 5-7 degrees and does not exceed 12 degrees, and the coronal position is vertical to the longitudinal axis of the tibia and has a deviation of not more than 3 degrees.
(2) The femoral prosthesis and the tibial prosthesis are two mutually matched prostheses, generally, the central axis of the femoral prosthesis is required to be relatively vertical to the upper plane of the tibial prosthesis, the error is within 6 degrees, the central axis is kept near the midpoint of the tibial prosthesis, the operation effect is influenced if the central axis exceeds the range, and operation failure can be caused if the central axis is serious.
In the prior art, although there are guides for cutting off diseased tissues, polishing planes and implanting a tibial prosthesis when the tibial prosthesis is implanted, such guides are complex in structure and troublesome to install, and increase the workload and the working difficulty of an operator; in addition, no guider capable of guiding the femoral prosthesis and the tibial prosthesis simultaneously, controlling the relative perpendicularity of the central axis of the femoral prosthesis and the upper plane of the tibial prosthesis and keeping the central position exists in the prior art, so that the control of the relative perpendicularity is difficult, especially for a novice or inexperienced operator.
In order to reduce the difficulty of the knee joint fixing platform unicondylar replacement and improve the operation effect, a novel unicondylar replacement guide template needs to be invented.
Disclosure of Invention
In order to solve the problem, the utility model provides a unicondylar replacement guide template and application method thereof.
The technical scheme of the utility model is that: a single condyle replacement guide template comprises a femur prosthesis guide template and a tibia prosthesis guide template which are connected with each other; a plurality of first thin connecting columns are arranged between the femur prosthesis guide template and the tibia prosthesis guide template; a femoral prosthesis guide groove is formed in the femoral prosthesis guide template; a cover plate is arranged on the outer side surface of the femoral prosthesis guide groove; one side of the cover plate is provided with a pair of guide holes; the upper end of the tibial prosthesis guide template is provided with a tibial prosthesis guide plane; one side of the tibial prosthesis guide plane is provided with a tibial prosthesis longitudinal guide groove; the central axis of the femoral prosthesis guide groove is vertical to the tibial prosthesis guide plane.
Furthermore, the femoral prosthesis guide template, the tibial prosthesis guide template and the first thin connecting column are integrally formed by 3D printing.
Furthermore, the inner side surfaces of the femoral prosthesis guide template and the tibial prosthesis guide template are jointed with the knee joint bones of the patient.
Furthermore, a groove is arranged on the outer side of the femoral prosthesis guide groove; the side surface of the groove is provided with a plurality of second thin connecting columns; the second thin connecting column is fixedly connected with the cover plate.
Furthermore, a first patella tissue movable groove is formed in one side of the femoral prosthesis guide template; and a second patella tissue moving groove is formed in one side of the tibial prosthesis guide template.
Furthermore, a plurality of first through holes are formed in the femoral prosthesis guide template; the tibia prosthesis guiding template is provided with a plurality of second through holes.
The utility model discloses a single condyle replacement guide template simple structure, it is formed according to patient's skeleton characteristic 3D printing, can laminate with patient's skeleton fast, conveniently, accomplish the location of guide template, simultaneously, the axis of femoral prosthesis guide way is perpendicular with shin bone prosthesis guide plane, thereby make the femoral prosthesis and shin bone prosthesis of implanting keep perpendicular, reduced the operation degree of difficulty, improved the operation effect; the utility model discloses a unicondylar replacement direction template application method is simple, and easy operation has solved the difficult problem that needs rely on experience control relative position when shin bone and femoral prosthesis implant, is favorable to novice or the not enough operative person of experience to accomplish the operation smoothly.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the position of the femoral prosthesis guide slot and the tibial prosthesis guide plane;
fig. 3 is a schematic view of the present invention attached to a femur model and a tibia model.
In the figure, a femur prosthesis guide template-1, a tibia prosthesis guide template-2, a first thin connecting column-3, a femur model-4 and a tibia model-5; a femoral prosthesis guide groove-1.1, a cover plate-1.2, a groove-1.3, a second thin connecting column-1.4, a first patella tissue movable groove-1.5, a first through hole-1.6 and a guide hole-1.7; a tibial prosthesis guide plane-2.1, a second through hole-2.2, a second patella tissue activity groove-2.3 and a tibial prosthesis longitudinal guide groove-2.4.
Detailed Description
The following describes a unicondylar replacement guide template and a method for using the same in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a unicondylar replacement guide template comprises a femoral prosthesis guide template 1 and a tibial prosthesis guide template 2 which are connected with each other; a plurality of first thin connecting columns 3 are arranged between the femoral prosthesis guiding template 1 and the tibial prosthesis guiding template 2; a femoral prosthesis guide groove 1.1 is arranged in the femoral prosthesis guide template 1; a cover plate 1.2 is arranged on the outer side surface of the femoral prosthesis guide groove 1.1; one side of the cover plate 1.2 is provided with a pair of guide holes 1.7; the upper end of the tibial prosthesis guide template 2 is provided with a tibial prosthesis guide plane 2.1; one side of the tibial prosthesis guide plane 2.1 is provided with a tibial prosthesis longitudinal guide groove 2.4; the central axis of the femoral prosthesis guide groove 1.1 is vertical to the tibial prosthesis guide plane 2.1; the femoral prosthesis guide template 1, the tibial prosthesis guide template 2 and the first thin connecting column 3 are integrally formed by 3D printing; the inner side surfaces of the femoral prosthesis guide template 1 and the tibial prosthesis guide template 2 are attached to the knee joint bones of the patient; a groove 1.3 is arranged on the outer side of the femoral prosthesis guide groove 1.1; the side surface of the groove 1.3 is provided with a plurality of second thin connecting columns 1.4; the second thin connecting column 1.4 is fixedly connected with the cover plate 1.2; a first patella tissue movable groove 1.5 is arranged on one side of the femoral prosthesis guide template 1; a second patella tissue movable groove 2.3 is arranged on one side of the tibial prosthesis guide template 2; a plurality of first through holes 1.6 are arranged in the femoral prosthesis guide template 1; the tibia prosthesis guiding template 2 is provided with a plurality of second through holes 2.2.
As shown in fig. 3, in actual use, the using method of the present invention specifically includes the following steps:
a. CT scanning is carried out on the knee joint of a patient, a 3D printing technology is used for manufacturing a unicondylar replacement guide template, the inner side surface of the unicondylar replacement guide template is attached to the knee joint bone of the patient, meanwhile, a plurality of first through holes 1.6 are printed in a femoral prosthesis guide template 1, a plurality of second through holes 2.2 are printed in a tibial prosthesis guide template 2, the number, the positions and the angles of the first through holes 1.6 and the second through holes 2.2 are determined by CT scanning, so that the unicondylar replacement guide template can be fixed, the key tissues of the patient are not damaged when a Kirschner wire is driven in, and the implantation of the femoral prosthesis and the tibial prosthesis is accurate;
b. exposing the affected part of the knee joint of the patient, fully exposing the cortex lycii radicis in front, fitting the unicondylar replacement guide template on the knee joint bone of the patient, and placing the patellar tissue in the first patellar tissue movable groove 1.5 and the second patellar tissue movable groove 2.3;
c. a Kirschner wire fixing single-condyle replacement guide template is driven into the first through hole 1.6 and the second through hole 2.2;
d. taking an L-shaped groove formed by a tibial prosthesis guide plane 2.1 and a tibial prosthesis longitudinal guide groove 2.4 in the tibial prosthesis guide template 2 as a reference, and cutting and grinding a tibial bone surface;
e. cutting off the first thin connecting column 3 to separate the femoral prosthesis guide template 1 from the tibial prosthesis guide template 2;
f. the patient can do knee bending action to fully expose the affected part of the femur;
g. drilling holes according to the two guide holes 1.7 on the cover plate 1.2, and reserving two positioning holes required by femoral prosthesis implantation in advance; cutting off the second thin connecting column 1.4 in the groove 1.3 by using a surgical tool, and then taking down the cover plate 1.2, wherein the length of the second thin connecting column 1.4 remained after cutting off does not exceed the groove 1.3 due to the design of the groove 1.3, so that the implantation of a follow-up femoral prosthesis is not influenced;
h. implanting the femoral prosthesis into the femoral prosthesis guide groove 1.1 as a reference to fully polish the bone surface of the femoral prosthesis;
i. taking down the guide plate, slotting on the lateral bone surface of the tibia, and placing the femoral and tibial prostheses
j. The knee joint was sutured and the wound was treated.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (6)
1. A unicondylar replacement guide template is characterized in that: comprises a femur prosthesis guide template (1) and a tibia prosthesis guide template (2) which are connected with each other; a plurality of first thin connecting columns (3) are arranged between the femur prosthesis guiding template (1) and the tibia prosthesis guiding template (2); a femoral prosthesis guide groove (1.1) is arranged in the femoral prosthesis guide template (1); a cover plate (1.2) is arranged on the outer side surface of the femoral prosthesis guide groove (1.1); one side of the cover plate (1.2) is provided with a pair of guide holes (1.7); the upper end of the tibial prosthesis guide template (2) is provided with a tibial prosthesis guide plane (2.1); one side of the tibial prosthesis guide plane (2.1) is provided with a tibial prosthesis longitudinal guide groove (2.4); the central axis of the femoral prosthesis guide groove (1.1) is vertical to the tibial prosthesis guide plane (2.1).
2. The unicondylar replacement guide template of claim 1, wherein: the femur prosthesis guide template (1), the tibia prosthesis guide template (2) and the first thin connecting column (3) are integrally formed through 3D printing.
3. The unicondylar replacement guide template of claim 2, wherein: the inner side surfaces of the femur prosthesis guide template (1) and the tibia prosthesis guide template (2) are jointed with the knee joint bones of the patient.
4. The unicondylar replacement guide template of claim 1, wherein: a groove (1.3) is arranged on the outer side of the femoral prosthesis guide groove (1.1); a plurality of second thin connecting columns (1.4) are arranged on the side surface of the groove (1.3); the second thin connecting column (1.4) is fixedly connected with the cover plate (1.2).
5. The unicondylar replacement guide template of claim 1, wherein: a first patella tissue movable groove (1.5) is arranged on one side of the femoral prosthesis guide template (1); one side of the tibial prosthesis guide template (2) is provided with a second patellar tissue movable groove (2.3).
6. The unicondylar replacement guide template of claim 1, wherein: a plurality of first through holes (1.6) are arranged in the femoral prosthesis guide template (1); the tibia prosthesis guiding template (2) is provided with a plurality of second through holes (2.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602668.0U CN212490276U (en) | 2020-08-05 | 2020-08-05 | Single condyle replacement guide template |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602668.0U CN212490276U (en) | 2020-08-05 | 2020-08-05 | Single condyle replacement guide template |
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| CN212490276U true CN212490276U (en) | 2021-02-09 |
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| CN202021602668.0U Active CN212490276U (en) | 2020-08-05 | 2020-08-05 | Single condyle replacement guide template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115969541A (en) * | 2023-03-20 | 2023-04-18 | 北京爱康宜诚医疗器材有限公司 | Distal grinding and positioning tool for femoral condyle |
-
2020
- 2020-08-05 CN CN202021602668.0U patent/CN212490276U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115969541A (en) * | 2023-03-20 | 2023-04-18 | 北京爱康宜诚医疗器材有限公司 | Distal grinding and positioning tool for femoral condyle |
| CN115969541B (en) * | 2023-03-20 | 2023-07-07 | 北京爱康宜诚医疗器材有限公司 | Femur condyle distal end grinding positioning tool |
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