CN107874809B - Ankle osteotomy guiding device and method for determining ankle osteotomy position - Google Patents
Ankle osteotomy guiding device and method for determining ankle osteotomy position Download PDFInfo
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- CN107874809B CN107874809B CN201711128378.XA CN201711128378A CN107874809B CN 107874809 B CN107874809 B CN 107874809B CN 201711128378 A CN201711128378 A CN 201711128378A CN 107874809 B CN107874809 B CN 107874809B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1703—Guides or aligning means for drills, mills, pins or wires using imaging means, e.g. by X-rays
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1775—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the foot or ankle
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Abstract
The invention provides an ankle osteotomy guiding device and an ankle osteotomy position determining method. Wherein, ankle joint osteotomy guiding device includes: base, locating rack, location structure, picture peg and osteotomy template. The technical scheme of the invention can effectively solve the problems of great operation difficulty and long time consumption caused by difficult osteotomy positioning in the prior art.
Description
Technical Field
The invention relates to the field of surgical instruments, in particular to an ankle osteotomy guiding device and an ankle osteotomy position determining method.
Background
Joint replacement is a medical treatment for replacing a painful and dysfunctional autologous joint with an artificial joint. The method is widely applied to hip joints, knee joints and other joints. However, the ankle joint has a complex structure, extremely high requirements on load bearing and movement of the joint, and the artificial ankle joint replacement effect is not ideal enough, so that the ankle joint replacement method becomes a problem to be solved urgently by ankle surgeons.
Artificial ankle prosthesis replacement has extremely high requirements on surgeons, cannot be correctly installed without a deep ankle surgical foundation (covering the aspects of biomechanics, anatomy, surgical operation technology and the like of the ankle), and hospitals capable of carrying out the operation can apply the operation to the phoenix feather unicorn all over the world.
For the conventional artificial ankle joint prosthesis replacement operation, the positioning in the operation is the most difficult and complicated, a special ankle external fixing frame is usually needed, then the operation positioning is completed by repeatedly adjusting under C-shaped arm X-ray equipment, one operation usually needs hundreds of times of repeated adjustment, the accurate ankle and guide pin positions can be realized, and the operation lasts for more than 3 hours.
Disclosure of Invention
The invention aims to provide an ankle osteotomy guiding device and an ankle osteotomy position determining method, and aims to solve the problems of high operation difficulty and long time consumption caused by difficult osteotomy positioning in the prior art.
In order to accomplish the above object, according to one aspect of the present invention, there is provided an ankle osteotomy guiding device comprising: the base is provided with a tibia matching surface and a connecting surface, a first positioning part is arranged on the connecting surface, and a first fixing hole is formed in the base; the positioning frame is provided with a central frame body, a first positioning arm and a second positioning arm, the first positioning arm and the second positioning arm extend to two sides from the central frame body, a second fixing hole is formed in the first positioning arm, a third fixing hole is formed in the second positioning arm, and a second positioning part matched with the first positioning part is arranged on the central frame body; the positioning structure is matched with the positioning frame, the axis of the tibia is determined through the positioning frame and the positioning structure, and the shaft rod penetrates through the tibia along the axis direction of the tibia; the inserting plate is detachably inserted and matched with the central frame body, the inserting direction of the inserting plate is parallel to the axis of the tibia, and a positioning groove parallel to the axis of the tibia is formed in the surface, far away from the base, of the inserting plate; the bone cutting template is lapped on one side, far away from the base, of the inserting plate, a positioning plate, a fourth fixing hole, an alignment groove and a bone cutting groove are arranged on the bone cutting template, the positioning plate is matched with the positioning groove, and the bone cutting template is located at a position to be cut when the alignment groove is opposite to the shaft lever.
Further, the tip of first location arm is provided with first through-hole, the tip of second location arm is provided with the second through-hole, the axis of first through-hole and second through-hole all is on a parallel with the axis of shin bone, location structure includes first location fork, first location needle and with first location fork, the bottom plate that first location needle all pegged graft, first location fork is worn to establish in first through-hole, first location needle is worn to establish in the second through-hole, be provided with first locating hole on the bottom plate, the axostylus axostyle is worn to establish in the shin bone through first locating hole.
Furthermore, at least one positioning plane is arranged on the side wall of the first positioning fork, a first insertion hole used for penetrating the first positioning fork is formed in the bottom plate, a limiting plane matched with the positioning plane is arranged on the hole wall of the first insertion hole, and a second insertion hole used for penetrating the first positioning needle is further formed in the bottom plate.
Furthermore, be provided with the third through-hole on the center support body, the locating rack still include with center support body complex extend the riser, extend and be provided with the fourth through-hole on the riser, the axis of third through-hole and fourth through-hole all is on a parallel with the axis of shin bone, location structure still includes second location fork and second pilot pin, the second location fork is worn to establish in the third through-hole, the second pilot pin is worn to establish in the fourth through-hole.
Furthermore, the end part of the inserting plate is provided with a stopping part which stops at one side of the central frame body.
Furthermore, the first positioning portion comprises a plurality of second positioning holes arranged at intervals, and the second positioning portion comprises a plurality of positioning columns arranged in one-to-one correspondence with the second positioning holes.
Furthermore, the axis of the first fixing hole and the axis of the base form an acute angle, and the axis of the second fixing hole and the axis of the central frame body form an acute angle.
Furthermore, the insertion plate is also provided with an avoiding hole extending along the length direction of the insertion plate.
Further, the osteotomy template is a plurality of sets of different sizes.
According to another aspect of the present invention, there is provided an ankle osteotomy guiding device, comprising: obtaining a base, a positioning frame and an inserting plate according to CT data of a patient; connecting the base to a predetermined position of the tibia through the first fixing hole; the positioning frame is arranged on the base through the matching of the first positioning part and the second positioning part, and the positioning frame is connected to the tibia through the second fixing hole and the third fixing hole; the axis of the tibia is determined through the matching of the positioning structure and the positioning frame and the X-ray equipment, and a shaft rod is arranged in the tibia in a penetrating manner along the axis direction of the tibia; inserting the inserting plate into the central frame body of the positioning frame, wherein the inserting direction of the inserting plate is parallel to the axial line of the tibia; the osteotomy template is overlapped on one side of the inserting plate, which is far away from the base, the positioning plate is inserted into the positioning groove, the osteotomy template is moved along the positioning groove, so that the alignment groove is opposite to the shaft rod, the position of the osteotomy template is fixed through the fourth fixing hole, and the position corresponding to the osteotomy groove of the osteotomy template is the position to be cut.
By applying the technical scheme of the invention, the specific structures of the base, the positioning frame and the inserting plate are obtained according to the CT data of the patient based on the customized design of the patient skeleton anatomy, so that the positioning is realized through the matching of the base, the positioning frame and the inserting plate. Specifically, the base will be attached to the tibia at a predetermined location via the first fixation hole. The positioning frame is arranged on the base through the matching of the first positioning portion and the second positioning portion, and the positioning frame is connected to the tibia through the second fixing hole and the third fixing hole. The axis of the tibia is determined through the matching of the positioning structure and the positioning frame and the X-ray equipment, and the shaft rod is arranged in the tibia in a penetrating mode along the axis direction of the tibia. And inserting the inserting plate into the central frame body of the positioning frame, wherein the inserting direction of the inserting plate is parallel to the axial line of the tibia. The osteotomy template is overlapped on one side of the inserting plate, which is far away from the base, the positioning plate is inserted into the positioning groove, the osteotomy template is moved along the positioning groove, so that the alignment groove is opposite to the shaft rod, the position of the osteotomy template is fixed through the fourth fixing hole, and the position corresponding to the osteotomy groove of the osteotomy template is the position to be cut. By using the guiding device of the embodiment, repeated adjustment is not needed, and only twice confirmation of the X-ray equipment is needed. Therefore, the problem of difficult osteotomy positioning can be solved, and the operation speed and quality can be improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, 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 shows a schematic structural view of an embodiment of an ankle osteotomy guiding device according to the present invention, except for an osteotomy template;
FIG. 2 shows a partial schematic view of the ankle osteotomy guide of FIG. 1;
FIG. 3 is a schematic view showing the construction of a spacer, a plate and a base plate of the ankle osteotomy guiding device of FIG. 1;
FIG. 4 shows a side view of the spacer, insert plate and base plate of FIG. 3;
FIG. 5 shows a top view of the spacer, insert plate and base plate of FIG. 3;
FIG. 6 is a schematic view showing the engagement of the spacer, the inserter plate and the osteotomy template of FIG. 3;
FIG. 7 is a schematic view of another angular configuration of the spacer, inserter plate and osteotomy template of FIG. 6;
FIG. 8 shows a schematic structural view of the spacer of FIG. 6;
FIG. 9 shows another angular configuration of the spacer of FIG. 8;
FIG. 10 shows a schematic structural view of a base of the ankle osteotomy guide of FIG. 1; and
fig. 11 shows a schematic structural view of the board of fig. 6.
Wherein the figures include the following reference numerals:
1. a tibia; 10. a base; 11. a first positioning portion; 12. a first fixing hole; 20. a positioning frame; 21. a central frame body; 211. a second positioning portion; 212. a third through hole; 22. a first positioning arm; 221. a second fixing hole; 222. a first through hole; 23. a second positioning arm; 231. a third fixing hole; 232. a second through hole; 24. extending the vertical plate; 241. a fourth via hole; 30. a shaft lever; 40. inserting plates; 41. positioning a groove; 42. a stopper portion; 43. avoiding holes; 50. cutting a bone template; 51. positioning a plate; 52. a fourth fixing hole; 53. a positioning groove; 54. a osteotomy slot; 61. a first positioning fork; 611. positioning a plane; 62. a first positioning pin; 63. a base plate; 631. a first positioning hole; 632. a first jack; 633. a second jack; 64. a second positioning fork; 65. a second positioning pin; 71. and (5) fixing the nail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, 2 and 6, the ankle osteotomy guiding device of the present embodiment includes: base 10, spacer 20, inserter 40 and osteotomy template 50. The base 10 has a tibia matching surface and a connecting surface, the connecting surface is provided with a first positioning portion 11, and the base 10 is provided with a first fixing hole 12. The positioning frame 20 has a center frame body 21, and a first positioning arm 22 and a second positioning arm 23 extending from the center frame body 21 to two sides, the first positioning arm 22 is provided with a second fixing hole 221, the second positioning arm 23 is provided with a third fixing hole 231, and the center frame body 21 is provided with a second positioning portion 211 engaged with the first positioning portion 11. The positioning structure is matched with the positioning frame 20, the axis of the tibia 1 is determined through the positioning frame 20 and the positioning structure, and the shaft rod 30 penetrates through the tibia along the axis direction of the tibia. The insert plate 40 is detachably matched with the center frame body 21 in an inserted mode, the inserting direction of the insert plate 40 is parallel to the axis of the tibia 1, and the surface, far away from the base 10, of the insert plate 40 is provided with a positioning groove 41 parallel to the axis of the tibia. The osteotomy template 50 is overlapped on one side of the inserting plate 40 far away from the base 10, a positioning plate 51, a fourth fixing hole 52, an alignment groove 53 and an osteotomy groove 54 are arranged on the osteotomy template 50, the positioning plate 51 is matched with the positioning groove 41, and the osteotomy template 50 is located at a position to be osteotomy when the alignment groove 53 is opposite to the shaft 30.
By applying the technical scheme of the embodiment, based on the customized design of the patient's bone anatomy, the specific structures of the base 10, the positioning frame 20 and the inserting plate 40 can be designed to ensure that the positioning is realized through the cooperation of the base and the positioning frame, so that the accurate position of the osteotomy groove 54 on the osteotomy template 50 is finally determined, the distal tibia osteotomy is realized, and the bone preparation is made for the implantation of the prosthesis. Specifically, the tibia 1 is obtained through 3D reconstruction according to CT data of a patient, an anatomical axis (i.e., the position of the shaft rod 30) of the tibia 1 is found, a transverse plane (i.e., the planes of the axes of the first positioning fork 61 and the first positioning needle 62) and a longitudinal plane (i.e., the planes of the axes of the second positioning fork 64 and the second positioning needle 65) of the anatomical axis, and an ankle joint central plane (i.e., the central plane of the positioning groove 41, which is perpendicular to the central axis of the tibia 1) of the patient are found, and after the osteotomy template 50 is inlaid in the positioning groove 41, the position of the osteotomy template 50 can be determined, so that the positioning of the osteotomy groove 54 is realized, and finally, the osteotomy is.
After obtaining the anatomical data of the tibia 1, the base 10 is obtained by reverse design, the base 10 is located on the surface of the tibia far end bone, and the base 10 is connected to the base 10 at a preset position of the tibia 1 through the first fixing hole 12. The positioning frame 20 is arranged on the base 10 by the cooperation of the first positioning portion 11 and the second positioning portion 211, the positioning frame 20 is connected to the tibia 1 by the second fixing hole 221 and the third fixing hole 231, the second positioning portion 211 is of a step structure, and the depth of the second positioning portion 211 inserted into the first positioning portion 11 can be limited, so that the height of the positioning frame 20 relative to the axis of the tibia is determined. The operation is complicated, so the positioning is assisted by X-ray fluoroscopy with a C-shaped arm X-ray machine in the operation. In the present invention, although a customized design pattern is used, in order to ensure smooth operation, the position of the tibia 1, i.e., the position of the shaft 30, is also confirmed by using a C-arm X-ray machine so that the plane on which the axes of the first positioning fork 61 and the first positioning pin 62 are located and the plane on which the axes of the second positioning fork 64 and the second positioning pin 65 are located intersect with each other. That is, it is observed by the X-ray apparatus that if the first positioning pin 62 overlaps with the central axis of the shaft 30 and the projections of the two are simultaneously located between the two forks of the first positioning fork 61 (as in the state shown in fig. 4), the first positioning fork 61, the first positioning pin 62 and the shaft 30 are coplanar; after the X-ray device is rotated by 90 degrees, the X-ray device projects again, if the second positioning pin 65 overlaps with the central axis of the shaft 30, and the two projections are located between the two forks of the second positioning fork 64 at the same time, at this time, the second positioning fork 64, the second positioning pin 65 and the shaft 30 are coplanar.
In operation, the positioning structure is matched with the positioning frame 20 to determine the position of the bottom plate 63, a through hole is formed in the central part of the bottom plate 63, the shaft rod 30 is inserted into the through hole and penetrates through the tibia 1, and the C-shaped arm X-ray equipment irradiates to ensure that the plane where the axes of the first positioning fork 61 and the first positioning needle 62 are located and the plane where the axes of the second positioning fork 64 and the second positioning needle 65 are located intersect with the anatomical axis of the tibia 1, namely the position of the shaft rod 30. The insert plate 40 is inserted into the central frame body 21 of the positioning frame 20, and the insertion direction of the insert plate 40 is parallel to the axis of the tibia 1. The osteotomy template 50 is overlapped on one side of the inserting plate 40 far away from the base 10, the positioning plate 51 is inserted into the positioning groove 41, the osteotomy template 50 is moved along the positioning groove 41, so that the alignment groove 53 is opposite to the shaft rod 30, the position of the osteotomy template 50 is fixed through the fourth fixing hole 52, and the position corresponding to the osteotomy groove 54 of the osteotomy template 50 is the position to be osteotomy. By using the guiding device of the embodiment, repeated adjustment is not needed, and only twice confirmation of the X-ray equipment is needed. Therefore, the problem of difficult osteotomy positioning can be solved, and the operation speed and quality can be improved.
It should be noted that: the tibia matching surface of the base 10 is designed based on the bone morphology of a patient, and perfect fit with the bone morphology can be achieved. The X-ray equipment preferably adopts a C-shaped arm X-ray machine, and the X-ray machine can realize X-ray transmission of different direction angles in the operation. The ankle osteotomy guiding device further includes a fixing nail 71 inserted into the first fixing hole 12, and the base 10 may be fixed by the fixing nail 71.
As shown in fig. 2 to 9, the end of the first positioning arm 22 is provided with a first through hole 222, and the end of the second positioning arm 23 is provided with a second through hole 232. The positions of the first through hole 222 and the second through hole 232 are obtained from the CT data of the patient. The axis of first through-hole 222 and second through-hole 232 all is on a parallel with the axis of shin bone 1, location structure includes first location fork 61, first pilot pin 62 and with first location fork 61, the bottom plate 63 that first pilot pin 62 all pegged graft, first location fork 61 wears to establish in first through-hole 222, first pilot pin 62 wears to establish in second through-hole 232, be provided with first locating hole 631 on the bottom plate 63, axostylus axostyle 30 wears to establish in shin bone 1 through first locating hole 631. The projection of the first positioning pin 62 between two prongs of the first positioning prong 61 can be confirmed by the X-ray device (the state shown in fig. 4), at which time the lateral position of the shaft 30 can be confirmed.
In order to facilitate the installation of the bottom plate 63, in this embodiment, as shown in fig. 1 and fig. 2 to fig. 4, at least one positioning plane 611 is disposed on a side wall of the first positioning fork 61, a first insertion hole 632 for inserting the first positioning fork 61 is disposed on the bottom plate 63, a position limiting plane engaged with the positioning plane 611 is disposed on a hole wall of the first insertion hole 632, and a second insertion hole 633 for inserting the first positioning pin 62 is further disposed on the bottom plate 63.
As shown in fig. 1, in this embodiment, the center frame body 21 is provided with a third through hole 212, the positioning frame 20 further includes an extending vertical plate 24 engaged with the center frame body 21, and the extending vertical plate 24 is provided with a fourth through hole 241. The positions of the third and fourth through holes 212, 241 are obtained from the CT data of the patient. The axes of the third through hole 212 and the fourth through hole 241 are both parallel to the axis of the tibia, the positioning structure further comprises a second positioning fork 64 and a second positioning pin 65, the second positioning fork 64 is arranged in the third through hole 212 in a penetrating manner, and the second positioning pin 65 is arranged in the fourth through hole 241 in a penetrating manner. The projection of the second positioning pin 65 between the two prongs of the second positioning prong 64 can be confirmed by the X-ray device, in which case the longitudinal position of the shaft 30 can be confirmed.
To further facilitate the positioning of the insert plate 40, as shown in fig. 11, the end of the insert plate 40 is provided with a stopper portion 42, and the stopper portion 42 is stopped at one side of the center frame body 21.
As shown in fig. 10, the first positioning portion 11 includes a plurality of second positioning holes arranged at intervals, and the second positioning portion 211 includes a plurality of positioning posts arranged in one-to-one correspondence with the plurality of second positioning holes.
In order to make the fixing more firm, the axis of the first fixing hole 12 forms an acute angle with the axis of the base 10, and the second fixing hole 221 forms an acute angle with the axis of the center frame body 21.
To facilitate alignment of the osteotomy template 50 with the shaft 30 (as will also be required to be confirmed by X-ray equipment), the plate 40 is also provided with relief holes 43 extending along its length. After the position of the osteotomy template 50 is confirmed, the inserter plate 40 is removed from the spacer 20 to facilitate the osteotomy procedure.
To better accommodate different patients, the osteotomy template 50 is a plurality of sets of varying sizes, seven sets being provided from small to large.
According to another aspect of the present invention, there is also provided a method of determining an ankle osteotomy location. The ankle osteotomy guiding device is realized, and the determination method comprises the following steps:
obtaining the base 10, the positioning frame 20 and the inserting plate 40 according to the CT data of the patient; the base 10 is attached to the tibia 1 at a predetermined position through the first fixing hole 12; the positioning frame 20 is arranged on the base 10 through the cooperation of the first positioning part 11 and the second positioning part 211, and the positioning frame 20 is connected to the tibia 1 through the second fixing hole 221 and the third fixing hole 231; the axis of the tibia 1 is determined through the matching of the positioning structure and the positioning frame 20 and the X-ray equipment, and a shaft rod 30 is arranged in the tibia in a penetrating manner along the axis direction of the tibia; inserting the inserting plate 40 into the central frame body 21 of the positioning frame 20, wherein the inserting direction of the inserting plate 40 is parallel to the axis of the tibia 1; the osteotomy template 50 is overlapped on one side of the inserting plate 40 far away from the base 10, the positioning plate 51 is inserted into the positioning groove 41, the osteotomy template 50 is moved along the positioning groove 41, so that the alignment groove 53 is opposite to the shaft rod 30, the position of the osteotomy template 50 is fixed through the fourth fixing hole 52, and the position corresponding to the osteotomy groove 54 of the osteotomy template 50 is the position to be osteotomy.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An ankle osteotomy guiding device, comprising:
the tibia joint structure comprises a base (10) and a first fixing hole (12), wherein the base is provided with a tibia joint surface and a joint surface, a first positioning part (11) is arranged on the joint surface, and the base (10) is provided with a first fixing hole;
the positioning frame (20) is provided with a central frame body (21), a first positioning arm (22) and a second positioning arm (23) which extend from the central frame body (21) to two sides, a second fixing hole (221) is formed in the first positioning arm (22), a third fixing hole (231) is formed in the second positioning arm (23), and a second positioning portion (211) matched with the first positioning portion (11) is formed in the central frame body (21);
the positioning structure is matched with the positioning frame (20), the axis of the tibia (1) is determined through the positioning frame (20) and the positioning structure, and a shaft rod (30) penetrates through the tibia along the axis direction of the tibia;
the insert plate (40) is detachably inserted and matched with the center frame body (21), the inserting direction of the insert plate (40) is parallel to the axis of the tibia (1), and a positioning groove (41) parallel to the axis of the tibia is formed in the surface, far away from the base (10), of the insert plate (40);
the bone cutting template (50) is lapped on one side, far away from the base (10), of the inserting plate (40), a positioning plate (51), a fourth fixing hole (52), an alignment groove (53) and a bone cutting groove (54) are arranged on the bone cutting template (50), the positioning plate (51) is matched with the positioning groove (41), and the bone cutting template (50) is located at a position to be cut when the alignment groove (53) is opposite to the shaft lever (30).
2. The ankle osteotomy guiding device of claim 1, wherein an end of said first positioning arm (22) is provided with a first through hole (222), the end part of the second positioning arm (23) is provided with a second through hole (232), the axes of the first through hole (222) and the second through hole (232) are parallel to the axis of the tibia (1), the positioning structure comprises a first positioning fork (61), a first positioning needle (62) and a bottom plate (63) which is inserted with the first positioning fork (61) and the first positioning needle (62), the first positioning fork (61) is arranged in the first through hole (222) in a penetrating way, the first positioning needle (62) is arranged in the second through hole (232) in a penetrating way, the bottom plate (63) is provided with a first positioning hole (631), and the shaft lever (30) penetrates through the tibia (1) through the first positioning hole (631).
3. The ankle osteotomy guiding device according to claim 2, wherein at least one positioning plane (611) is disposed on a side wall of the first positioning fork (61), a first insertion hole (632) for passing through the first positioning fork (61) is disposed on the bottom plate (63), a limiting plane cooperating with the positioning plane (611) is disposed on a hole wall of the first insertion hole (632), and a second insertion hole (633) for passing through the first positioning pin (62) is further disposed on the bottom plate (63).
4. The ankle osteotomy guiding device according to claim 1, wherein a third through hole (212) is provided on the central frame body (21), the positioning frame (20) further comprises an extending vertical plate (24) engaged with the central frame body (21), a fourth through hole (241) is provided on the extending vertical plate (24), the axes of the third through hole (212) and the fourth through hole (241) are both parallel to the axis of the tibia, the positioning structure further comprises a second positioning fork (64) and a second positioning needle (65), the second positioning fork (64) is inserted into the third through hole (212), and the second positioning needle (65) is inserted into the fourth through hole (241).
5. The ankle osteotomy guiding device of claim 1, wherein an end of said inserter plate (40) is provided with a stopper portion (42), said stopper portion (42) stopping at a side of said center frame body (21).
6. The ankle osteotomy guiding device of claim 1, wherein said first positioning portion (11) includes a plurality of second positioning holes spaced apart from each other, and said second positioning portion (211) includes a plurality of positioning posts disposed in one-to-one correspondence with said plurality of second positioning holes.
7. The ankle osteotomy guiding device according to claim 1, wherein said first fixing hole (12) has an axis at an acute angle to an axis of said base (10), and said second fixing hole (221) has an acute angle to an axis of said central frame (21).
8. The ankle osteotomy guiding device of claim 1, wherein said inserter plate (40) is further provided with an avoiding hole (43) extending along a length thereof.
9. The ankle osteotomy guiding device of claim 1, wherein said osteotomy template (50) is a plurality of sets of different sizes.
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| CN201711128378.XA CN107874809B (en) | 2017-11-14 | 2017-11-14 | Ankle osteotomy guiding device and method for determining ankle osteotomy position |
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| CN201711128378.XA CN107874809B (en) | 2017-11-14 | 2017-11-14 | Ankle osteotomy guiding device and method for determining ankle osteotomy position |
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| CN108354663B (en) * | 2018-04-16 | 2019-09-03 | 中国人民解放军陆军军医大学第一附属医院 | A kind of individuation ankle fusion guide plate and preparation method thereof |
| CN112168278A (en) * | 2019-07-03 | 2021-01-05 | 上海昕健医疗技术有限公司 | Guide plate assembly for ankle osteotomy and method of use thereof |
| CN115998398B (en) * | 2023-02-14 | 2023-07-18 | 北京爱康宜诚医疗器材有限公司 | Bone fixing device |
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