CN117357196A - Femur distal osteotomy device - Google Patents
Femur distal osteotomy device Download PDFInfo
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- CN117357196A CN117357196A CN202311499298.0A CN202311499298A CN117357196A CN 117357196 A CN117357196 A CN 117357196A CN 202311499298 A CN202311499298 A CN 202311499298A CN 117357196 A CN117357196 A CN 117357196A
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 90
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 28
- 230000007423 decrease Effects 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 14
- 210000002303 tibia Anatomy 0.000 description 7
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000002271 resection Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 206010006514 bruxism Diseases 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 210000003137 popliteal artery Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
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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
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/155—Cutting femur
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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
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/142—Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Transplantation (AREA)
- Surgical Instruments (AREA)
Abstract
The application discloses a femur distal end cuts bone device includes: a mounting main body; the positioning component is arranged on the mounting main body, and at least part of the positioning component is inserted into the femur; the grinding component is arranged on the mounting main body and is positioned at the side of the positioning component, the grinding component comprises a grinding component and a transmission component, the grinding component is arranged at the end part of the transmission component and is attached to the end surface to be ground of the femur, the transmission component is movably arranged along the direction close to or far away from the end surface to be ground, and meanwhile, the transmission component is rotatably arranged around a first preset axis so as to drive the grinding component to rotate to grind the femur; the femur grinding device comprises a mounting main body, a transmission component, a grinding component, a reference end face, a transmission component, a plurality of scale marks, a grinding component and a femur, wherein the mounting main body is provided with the reference end face, the transmission component is provided with the scale marks, the reference end face and any one of the scale marks are positioned in the same plane in the grinding process of the grinding component, and the grinding quantity of the grinding component to the femur is determined. The method and the device solve the problem that in the prior art, the osteotomy precision of the femur distal osteotomy process is low.
Description
Technical Field
The application relates to the technical field of medical instrument design, in particular to a femur distal end osteotomy device.
Background
In the fixed platform unicondylar replacement operation, the bone cutting of the distal femur is an important step, and the accuracy of the bone cutting directly influences the effect of the installation of the prosthesis, so that the postoperative effect is influenced.
In the current operation, a medical staff adopts a swing saw to cut bones, and needs to cut the distal femur by taking a tibia cut bone plane as a reference, if the femur and tibia of the knee joint are placed at a straightening angle to deviate in the actual operation process, the angle of the distal femur cut bones is wrong; if the tibia is cut, the angle deviation can also cause the fracture of the distal femur, and the swing saw can easily damage the popliteal artery at the rear side of the knee joint when the fracture is cut at the straightening position.
In addition, in the osteotomy process of prior art, still need guarantee through the director that the osteotomy volume is accurate, set up on the director generally to the spacing saw groove of pendulum saw, pendulum saw removes in saw inslot, but, the director can not laminate shin bone osteotomy plane strictly, leads to the osteotomy volume to produce the deviation, and once the director is fixed a position after, if need increase the osteotomy volume often operation is complicated, and medical personnel use inconveniently.
Disclosure of Invention
The main aim of the application is to provide a femur distal end osteotomy device to solve the lower problem of osteotomy precision in the femur distal end osteotomy process among the prior art.
According to one aspect of the present application, there is provided a distal femoral osteotomy device, comprising: a mounting main body; the positioning component is arranged on the mounting main body, and at least part of the positioning component is inserted into the femur; the grinding component is arranged on the mounting main body and is positioned at the side of the positioning component, the grinding component comprises a grinding component and a transmission component, the grinding component is arranged at the end part of the transmission component and is attached to the end surface to be ground of the femur, the transmission component is movably arranged along the direction close to or far away from the end surface to be ground, and meanwhile, the transmission component is rotatably arranged around a first preset axis so as to drive the grinding component to rotate to grind the femur; the femur grinding device comprises a mounting main body, a transmission component, a grinding component, a reference end face, a transmission component and a plurality of scale marks, wherein the mounting main body is provided with the reference end face, the transmission component is provided with the scale marks, and in the grinding process of the grinding component, the reference end face and any one of the scale marks are positioned in the same plane, so that the grinding quantity of the grinding component to the femur is determined.
Further, the mounting body is movably disposed with respect to the transmission member; the transmission part is also provided with a reference mark, and the reference mark is arranged on one side of the scale marks, which is close to the grinding part, so that after the grinding part is attached to the end face to be ground, the position of the installation main body is moved until the reference end face and the reference mark are positioned in the same plane.
Further, a first mounting sleeve is arranged on the mounting main body, at least part of the transmission component is arranged in the first mounting sleeve in a penetrating mode, and at least part of the end face of the first mounting sleeve is a reference end face.
Further, the positioning member includes: an intramedullary rod; the fixing piece, the end at the fixing piece is fixed connection to the intramedullary rod, and intramedullary rod and at least partial fixing piece insert and establish in the femur, and the one end that the fixing piece kept away from the intramedullary rod sets up on the installation main part.
Further, the fixing member includes: the connecting rod is arranged on the mounting main body; the first end of the locating cone is connected with the connecting rod, the second end of the locating cone is connected with the intramedullary rod, and the intramedullary rod and the locating cone are respectively inserted into the femur in sequence; the outer diameter of the positioning cone gradually decreases from the first end to the second end of the positioning cone, wherein the conical surface of the positioning cone is provided with a concave-convex structure, and the concave-convex structure extends along the axial direction of the positioning cone.
Further, an included angle A is formed between the axis of the intramedullary rod and the axis of the transmission part, and the range of the included angle A is as follows: a is more than or equal to 5 degrees and less than or equal to 7 degrees.
Further, the distal femur osteotomy device further comprises: and the adjusting component is movably arranged at least partially along a preset direction and is connected with the mounting main body, and the mounting main body is driven to move along a direction approaching or far away from the femur by the adjusting component.
Further, a second mounting sleeve is arranged on the mounting main body, at least part of the positioning component is arranged at one end of the second mounting sleeve in a penetrating way, and a jack is arranged in the positioning component; the adjusting assembly includes: the adjusting rod penetrates into the second mounting sleeve from the other end of the second mounting sleeve and is inserted into the jack, and the adjusting rod is movably arranged along the length direction of the second mounting sleeve; the adjusting rod is connected with the installation main body, and the installation main body is driven to move through the adjusting rod.
Further, the jack is the screw hole, is provided with the external screw thread section on adjusting the pole, adjusts the pole and passes through external screw thread section and screw hole screw-thread fit, and adjusting assembly still includes: the bearing is sleeved on the adjusting rod, the inner ring of the bearing is connected with one end of the adjusting rod far away from the external thread section, and the outer ring of the bearing is connected with the inner wall surface of the second mounting sleeve so as to drive the mounting main body to move in the process of rotating the adjusting rod.
Further, a positioning lug is arranged on the adjusting rod and protrudes relative to the surface of the adjusting rod so as to form a first step structure between the positioning lug and the surface of the adjusting rod; the inner wall surface of the second mounting sleeve is provided with a second step structure, the inner ring of the bearing is abutted on the first step end surface of the first step structure, and the outer ring of the bearing is abutted on the second step end surface of the second step structure.
Further, the adjusting assembly further comprises: the adjusting knob is arranged at one end of the adjusting rod far away from the positioning component, is positioned at the outer side of the second mounting sleeve and drives the adjusting rod to rotate by rotating the adjusting knob.
Further, a reference midline is further provided on the mounting body, and the mounting body is rotatably provided about a second predetermined axis to adjust a position of the reference midline so that the reference midline is parallel to a medial condyle midline of the femur to drive the grinding assembly to move to the predetermined position.
Further, still be provided with the fixed orifices on the installation main part, the distal femur osteotomy device still includes: and the fastening nails are inserted into the femur after at least part of the fastening nails pass through the fixing holes so as to position the mounting main body.
Compared with the prior art, the technical scheme of the application has at least the following technical effects:
according to the femur far-end osteotomy device provided by the application, set up locating part and grinding subassembly, after setting up locating part and grinding subassembly respectively on the installation main part, make locating part insert and fix a position on the femur, carry out first location to the grinding subassembly under the drive of installation main part, set up the installation main part for movably setting around the second predetermined axis, drive the grinding subassembly and rotate, carry out the second location to the grinding subassembly, thereby guarantee the accurate location of grinding subassembly to the grinding position, afterwards make grinding part and the end face butt of waiting of femur under the promotion of drive part, the reference terminal surface and the reference sign parallel and level of installation main part, afterwards begin grinding the femur, in this process, through observing the relative positional relationship of each scale sign on reference terminal surface and the drive part, obtain accurate grinding volume, in the whole operation process, through locating grinding subassembly many times, guarantee accurate femur grinding position, utilize reference terminal surface and scale sign cooperation, guarantee accurate femur osteotomy volume.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic view of a first view of a distal femoral osteotomy device of the present disclosure;
FIG. 2 is a cross-sectional view of an adjustment assembly in a distal femoral osteotomy device of the present disclosure;
FIG. 3 is a schematic view of a second view of the distal femur osteotomy device of the present disclosure;
FIG. 4 is a schematic view of a third view of a distal femoral osteotomy device of the present disclosure;
fig. 5 is a view of the use of the distal femur osteotomy device disclosed in the present application.
Wherein the above figures include the following reference numerals:
100. femur; 1. a mounting main body; 2. a positioning member; 3. a grinding assembly; 30. grinding the component; 31. a transmission member; 10. a reference end face; 310. a scale mark; 311. a reference mark; 312. a butt joint notch; 11. a first mounting sleeve; 21. an intramedullary rod; 22. a fixing member; 220. a connecting rod; 221. positioning cone; 2210. a concave-convex structure; 4. an adjustment assembly; 12. a second mounting sleeve; 23. a jack; 40. an adjusting rod; 41. a bearing; 401. positioning the protruding blocks; 402. a first step structure; 120. a second step structure; 42. an adjustment knob; 13. a reference midline; 14. a fixing hole; 5. and (5) fastening nails.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As mentioned in the background art, in the bone resection operation of the distal femur in the prior art, a swing saw is adopted to perform bone resection, a guide is arranged on a bone body, the thickness of the guide is used for determining bone resection amount, the guide takes a tibia bone resection plane as a reference, and a notch for limiting the swing saw is arranged on the guide so as to avoid deviation in the reciprocating swing process of the swing saw; however, the accuracy of femur osteotomies is determined by the accuracy of tibia osteotomies, and when the tibia placement angle deviates, the femur distal osteotomies are also inaccurate; therefore, the problem that exists among the prior art is solved, the femur distal end cuts bone device in this application, positioning component 2 and grinding subassembly 3 have been set up, positioning component 2 and grinding subassembly 3 are connected through installation main part 1, directly insert positioning component 2 and establish on the femur and fix a position, set up benchmark terminal surface 10 on installation main part 1, set up scale mark 310 on transmission component 31, in the in-service use, in this way, take femur itself as benchmark location, transmission component 31 sideband moves grinding component 30 and rotates the limit along with the grinding towards the direction that is close to the femur, scale mark 310 moves with reference terminal surface 10 relatively along with transmission component 31 at this moment, medical personnel can see the osteotomy volume according to the position relation between benchmark terminal surface 10 and each scale mark 310 directly, so guaranteed that cuts bone device location is accurate, guaranteed again to femur distal end's osteotomy volume accuracy.
Referring to fig. 1-5, the present application provides a distal femoral osteotomy device, comprising: a mounting body 1; a positioning member 2 provided on the mounting body 1, at least a portion of the positioning member 2 being inserted into the femur 100; the grinding component 3 is arranged on the mounting main body 1 and is positioned at the side of the positioning component 2, the grinding component 3 comprises a grinding component 30 and a transmission component 31, the grinding component 30 is arranged at the end part of the transmission component 31 and is attached to the end surface to be ground of the femur 100, the transmission component 31 is movably arranged in the direction close to or far from the end surface to be ground, and meanwhile, the transmission component 31 is rotatably arranged around a first preset axis so as to drive the grinding component 30 to rotate to grind the femur 100; wherein, the installation main body 1 is provided with a reference end surface 10, and the transmission part 31 is provided with a plurality of scale marks 310, so that in the grinding process of the grinding part 30, the grinding amount of the femur 100 by the grinding part 30 is determined by the reference end surface 10 being in the same plane with any one scale mark 310 of the plurality of scale marks 310.
In the femur far-end osteotomy device provided by the application, including installation main part 1, positioning component 2 and grinding subassembly 3 set up respectively on installation main part 1, when positioning component 2 inserts on femur 100, then grinding subassembly 3 has confirmed a setpoint thereupon, afterwards drive part 31 promotes grinding part 30 butt to the femur 100 wait to grind on the terminal surface, drive grinding part 30 rotation along with drive part 31 rotation, wait to grind the terminal surface and grind, according to the relative positional relationship between benchmark terminal surface 10 and each scale mark 310, the grinding volume to the femur is accurately controlled, the accuracy to femur far-end osteotomy has been improved.
Preferably, the grinding member 30 is a grinding pad structure; or, the grinding part 30 includes a grinding body having a disc structure, and a plurality of grinding teeth are provided on a surface of the grinding body, each of the grinding teeth being in contact with an end surface to be ground to grind the femur during rotation of the grinding part 30. The transmission member 31 has a columnar structure, and the first predetermined axis is an axis of the columnar structure.
Further, the mounting body 1 is movably provided with respect to the transmission member 31; the transmission part 31 is also provided with a reference mark 311, and the reference mark 311 is arranged on one side of the plurality of scale marks 310 close to the grinding part 30, so that after the grinding part 30 is attached to the end surface to be ground, the position of the mounting main body 1 is moved until the reference end surface 10 and the reference mark 311 are in the same plane. After the positioning member 2 is mounted, in order to improve the accurate control of the grinding amount, a reference mark 311 is provided on the side of the scale mark 310, and before grinding, the mounting body 1 is moved to the position where the reference end face 10 and the reference mark 311 are in the same plane, so that the grinding amount can be accurately controlled in the grinding process.
In the application, the distance between two adjacent scale marks can be set as the required osteotomy amount according to the actual requirement, for example, if the osteotomy amount is 1mm, the distance between the reference mark 311 and one of the adjacent scale marks 310 is 1mm, and the distance between the other two adjacent scale marks 310 is 1mm, then the transmission part 31 indicates that the transmission part 31 drives the grinding part 30 to move by 1mm when the reference end face 10 moves from the reference mark 311 to the first scale mark 310 in the moving process, and the osteotomy is finished at this time; alternatively, when the amount of osteotomy is 2mm, only the reference end face 10 is flush with the second scale mark 310. Through such design, at the in-process of cutting the bone, medical personnel can be accurately to the control the bone volume of cutting of femur distal end.
In a specific implementation process, the mounting main body 1 is provided with a first mounting sleeve 11, at least part of the transmission component 31 is penetrated in the first mounting sleeve 11, and at least part of the end surface of the first mounting sleeve 11 is the reference end surface 10. The transmission part 31 is installed conveniently, and at least part of the end face of the first installation sleeve 11 is used as the reference end face 10, so that the reference end face 10 of the transmission part 31 can be directly leveled with each scale mark 310 in the moving process, and the observation and judgment of medical staff are facilitated.
Specifically, as shown in fig. 1, 3 and 4, the positioning member 2 includes: an intramedullary rod 21; the fixing member 22, the intramedullary rod 21 is fixedly connected to an end of the fixing member 22, the intramedullary rod 21 and at least part of the fixing member 22 are inserted into the femur 100, and an end of the fixing member 22 away from the intramedullary rod 21 is disposed on the mounting body 1. In actual operation, the intramedullary rod 21 is inserted into the intramedullary canal of the femur, so that the angle of the intramedullary rod 21 is identical to the angle of the femur, ensuring that the grinding means 30 define a first location point, and the fixing element 22 is inserted into the mounting body 1, avoiding movement of the intramedullary rod 21 in the intramedullary canal of the femur.
Further, the fixing member 22 includes: a connection rod 220 provided on the mounting body 1; the locating cone 221, the first end of the locating cone 221 is connected with the connecting rod 220, the second end of the locating cone 221 is connected with the intramedullary rod 21, and the intramedullary rod 21 and the locating cone 221 are respectively inserted into the femur 100 in sequence; the outer diameter of the positioning cone 221 gradually decreases from the first end to the second end of the positioning cone 221, wherein the concave-convex structure 2210 is arranged on the conical surface of the positioning cone 221, and the concave-convex structure 2210 extends along the axial direction of the positioning cone 221. Specifically, the femur has an insertion port communicating with the intramedullary canal, and after the intramedullary rod 21 is inserted into the intramedullary canal from the insertion port, at least part of the positioning cone 221 is inserted into the insertion port, and the concave-convex structure 2210 is arranged on the conical surface of the positioning cone 221, so that the friction between the positioning cone 221 and the inner wall surface of the insertion port is increased, the positioning cone 221 is kept stable, and the intramedullary rod 21 is prevented from rotating and sinking in the intramedullary canal of the femur.
In an embodiment provided herein, the distal femoral osteotomy device further comprises: the adjusting component 4, at least part of the adjusting component 4 is movably arranged along a preset direction, the adjusting component 4 is connected with the mounting main body 1, and the adjusting component 4 drives the mounting main body 1 to move along a direction approaching or separating from the femur. Thus, the position of the mounting body 1 can be slightly adjusted by the adjusting assembly 4, so that the positioning accuracy of the mounting body 1 can be improved.
Specifically, the mounting main body 1 is provided with a second mounting sleeve 12, at least part of the positioning component 2 is arranged at one end of the second mounting sleeve 12 in a penetrating way, and the positioning component 2 is internally provided with a jack 23; the adjustment assembly 4 comprises: the adjusting rod 40, the adjusting rod 40 penetrates into the second mounting sleeve 12 from the other end of the second mounting sleeve 12 and is inserted into the jack 23, and the adjusting rod 40 is movably arranged along the length direction of the second mounting sleeve 12; the adjusting rod 40 is connected with the installation main body 1, and the installation main body 1 is driven to move by the adjusting rod 40. The position of the mounting body 1 is adjusted by the adjustment lever 40 in this way, and the adjustment lever 40 is mounted and positioned by the positioning member 2.
Preferably, jack 23 is the screw hole, is provided with the external screw thread section on adjusting the pole 40, adjusts pole 40 through external screw thread section and screw hole screw-thread fit, and adjusting assembly 4 still includes: the bearing 41 is sleeved on the adjusting rod 40, the inner ring of the bearing 41 is connected with one end of the adjusting rod 40 far away from the external thread section, and the outer ring of the bearing 41 is connected with the inner wall surface of the second mounting sleeve 12 so as to drive the mounting main body 1 to move along the horizontal direction in the process of rotating the adjusting rod 40. Thus, by rotating the adjusting lever 40, the adjusting lever 40 is in threaded fit with the insertion hole 23, and the circumferential movement is converted into the horizontal movement under the action of the bearing 41, so that the adjusting lever 40 drives the mounting body 1 to move.
In order to facilitate the adjustment rod 40 to drive the installation body 1 to reciprocate, as shown in fig. 2, a positioning protrusion 401 is provided on the adjustment rod 40, the positioning protrusion 401 protrudes relative to the surface of the adjustment rod 40, so as to form a first step structure 402 between the positioning protrusion 401 and the surface of the adjustment rod 40; the second mounting sleeve 12 is provided with a second stepped structure 120 on an inner wall surface thereof, and an inner ring of the bearing 41 abuts against a first stepped end surface of the first stepped structure 402, and an outer ring of the bearing 41 abuts against a second stepped end surface of the second stepped structure 120. Thus, the bearing 41 is positioned through the first step structure 402 and the second step structure 120, and under the action of the bearing 41, the relative rotation of the adjusting rod 40 and the mounting main body 1 is ensured, and the adjusting rod 40 can drive the mounting main body 1 to move along the horizontal direction.
Further, for convenience of rotating the adjustment lever 40, the adjustment assembly 4 further includes: the adjusting knob 42 is arranged at one end of the adjusting rod 40 far away from the positioning component 2, the adjusting knob 42 is positioned at the outer side of the second mounting sleeve 12, and the adjusting knob 42 is rotated to drive the adjusting rod 40 to rotate.
In a specific implementation, the mounting body 1 is further provided with a reference midline 13, and the mounting body 1 is rotatably disposed about a second predetermined axis to adjust the position of the reference midline 13, so that the reference midline 13 is parallel to the medial condyle midline of the femur 100 to drive the grinding assembly 3 to move to a predetermined position. The second predetermined axis is the axis of the adjusting rod 40, after the intramedullary rod 21 and the locating cone 221 are installed, the first locating point of the grinding component 30 is located, then the installation body 1 is rotated to drive the grinding component 3 to rotate, when the reference midline 13 is parallel to the medial condyle midline of the femur 100, the grinding component 30 is located at the second locating point, then the transmission component 31 is directly pushed to enable the grinding component 30 to be attached to the surface to be ground of the femur 100, the position of the installation body 1 along the horizontal direction is adjusted to enable the reference end surface 10 to be flush with the reference mark 311, and then the surface to be ground is ground.
In order to avoid that the position of the mounting main body 1 changes during the grinding process to influence the osteotomy precision, the mounting main body 1 is further provided with a fixing hole 14, and the femur distal osteotomy device further comprises: the fastening pin 5 is inserted into the femur 100 after at least a portion of the fastening pin 5 passes through the fixing hole 14 to position the mounting body 1.
An included angle A is formed between the axis of the intramedullary rod 21 and the axis of the transmission part 31, and the included angle A is in the range of: a is more than or equal to 5 degrees and less than or equal to 7 degrees. In the practical application process, the angle mark is arranged on the installation main body 1 to mark the everting angle of the femur applicable to the osteotomy device and the angle value of the included angle A applicable to the left limb or the right limb according to the everting angle of the actual femur.
In the actual operation process, the end of the transmission part 31 is provided with a docking notch 312, the docking notch 312 is connected with a power source, and the power source is preferably an electric motor, and the transmission part 31 is driven to rotate by the electric motor so as to drive the grinding part 30 to rotate.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
according to the femur distal end osteotomy device provided by the application, the positioning component 2 and the grinding component 3 are arranged on the installation main body 1 respectively, after the positioning component 2 is inserted into the femur to be positioned, the grinding component 3 is positioned at the first positioning point under the drive of the installation main body 1, the installation main body 1 is movably arranged around the second preset axis, the grinding component 3 is driven to rotate to the second positioning point, so that the accurate positioning of the grinding component 3 to the grinding position is ensured, the grinding component 30 is abutted with the end face to be ground of the femur under the drive of the transmission component 31, the installation main body 1 is driven by the adjustment component 4 to enable the reference end face 10 to be flush with the reference mark 311, then the femur is ground, and in the process, the accurate grinding quantity is obtained by observing the relative position relation of the reference end face 10 and each scale mark 310 on the transmission component 31.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (13)
1. A distal femoral osteotomy device, comprising:
a mounting body (1);
a positioning component (2) arranged on the mounting main body (1), wherein at least part of the positioning component (2) is inserted into the femur (100);
the grinding assembly (3) is arranged on the mounting main body (1) and is positioned at the side of the positioning component (2), the grinding assembly (3) comprises a grinding component (30) and a transmission component (31), the grinding component (30) is arranged at the end part of the transmission component (31) and is attached to the end surface to be ground of the femur (100), the transmission component (31) is movably arranged along the direction approaching to or away from the end surface to be ground, and meanwhile, the transmission component (31) is rotatably arranged around a first preset axis so as to drive the grinding component (30) to rotate to grind the femur (100);
the femur (100) grinding device comprises a mounting main body (1), a transmission component (31) and a grinding component (30), wherein the mounting main body (1) is provided with a reference end face (10), the transmission component (31) is provided with a plurality of scale marks (310), and in the grinding process of the grinding component (30), the reference end face (10) and any one of the scale marks (310) are positioned in the same plane, so that the grinding quantity of the femur (100) by the grinding component (30) is determined.
2. The femoral distal osteotomy device of claim 1, wherein the mounting body (1) is movably disposed relative to the transmission member (31);
and a reference mark (311) is further arranged on the transmission part (31), and the reference mark (311) is arranged on one side, close to the grinding part (30), of the plurality of scale marks (310) so as to move the position of the mounting main body (1) until the reference end surface (10) and the reference mark (311) are positioned in the same plane after the grinding part (30) is attached to the end surface to be ground.
3. The distal femur osteotomy device of claim 2, wherein a first mounting sleeve (11) is provided on the mounting body (1), at least a portion of the transmission member (31) is threaded within the first mounting sleeve (11), and at least a portion of the end face of the first mounting sleeve (11) is the reference end face (10).
4. The distal femoral osteotomy device of claim 1, wherein the positioning component (2) comprises:
an intramedullary rod (21);
the fixing piece (22), the intramedullary rod (21) is fixedly connected to the end part of the fixing piece (22), the intramedullary rod (21) and at least part of the fixing piece (22) are inserted into the femur (100), and one end of the fixing piece (22) far away from the intramedullary rod (21) is arranged on the mounting main body (1).
5. The distal femoral osteotomy device of claim 4, wherein the fixation member (22) comprises:
a connecting rod (220) provided on the mounting body (1);
the first end of the locating cone (221) is connected with the connecting rod (220), the second end of the locating cone (221) is connected with the intramedullary rod (21), and the intramedullary rod (21) and the locating cone (221) are respectively inserted into the femur (100) in sequence;
the outer diameter of the positioning cone (221) gradually decreases from the first end to the second end of the positioning cone (221), wherein a concave-convex structure (2210) is arranged on the conical surface of the positioning cone (221), and the concave-convex structure (2210) extends along the axial direction of the positioning cone (221).
6. The distal femoral osteotomy device of claim 4, wherein the axis of the intramedullary rod (21) and the axis of the transmission member (31) have an included angle a ranging from: a is more than or equal to 5 degrees and less than or equal to 7 degrees.
7. The distal femoral osteotomy device of claim 1, wherein the distal femoral osteotomy device further comprises:
the adjusting component (4), at least part of adjusting component (4) is movably arranged along a preset direction, the adjusting component (4) is connected with the mounting main body (1), and the adjusting component (4) drives the mounting main body (1) to move along a direction approaching to or away from the femur (100).
8. The femur distal end osteotomy device as in claim 7, wherein said mounting body (1) is provided with a second mounting sleeve (12), at least a portion of said positioning member (2) is threaded at one end of said second mounting sleeve (12), and a receptacle (23) is provided in said positioning member (2); the adjustment assembly (4) comprises:
the adjusting rod (40) penetrates into the second mounting sleeve (12) from the other end of the second mounting sleeve (12) and is inserted into the jack (23), and the adjusting rod (40) is movably arranged along the length direction of the second mounting sleeve (12);
the adjusting rod (40) is connected with the installation main body (1), and the installation main body (1) is driven to move through the adjusting rod (40).
9. The distal femur osteotomy device of claim 8, wherein the receptacle (23) is a threaded hole, the adjustment rod (40) is provided with an external threaded section, the adjustment rod (40) is threadedly engaged with the threaded hole through the external threaded section, and the adjustment assembly (4) further comprises:
the bearing (41) is sleeved on the adjusting rod (40), the inner ring of the bearing (41) is connected with one end, far away from the external thread section, of the adjusting rod (40), and the outer ring of the bearing (41) is connected with the inner wall surface of the second mounting sleeve (12) so as to drive the mounting main body (1) to move in the process of rotating the adjusting rod (40).
10. The distal femoral osteotomy device of claim 9, wherein the adjustment stem (40) has a positioning tab (401) disposed thereon, the positioning tab (401) protruding relative to a surface of the adjustment stem (40) to form a first step structure (402) between the positioning tab (401) and the surface of the adjustment stem (40);
the inner wall surface of the second mounting sleeve (12) is provided with a second step structure (120), the inner ring of the bearing (41) is abutted against the first step end surface of the first step structure (402), and the outer ring of the bearing (41) is abutted against the second step end surface of the second step structure (120).
11. The distal femoral osteotomy device of claim 9, wherein the adjustment assembly (4) further comprises:
the adjusting knob (42) is arranged at one end of the adjusting rod (40) far away from the positioning component (2), the adjusting knob (42) is positioned at the outer side of the second mounting sleeve (12), and the adjusting rod (40) is driven to rotate by rotating the adjusting knob (42).
12. The distal femoral osteotomy device of claim 1, wherein the mounting body (1) further has a reference midline (13) disposed thereon, the mounting body (1) being rotatably disposed about a second predetermined axis to adjust the position of the reference midline (13) such that the reference midline (13) is parallel to the medial condyle midline of the femur (100) to move the grinding assembly (3) to a predetermined position.
13. The distal femoral osteotomy device of claim 1, wherein the mounting body (1) further has a fixation hole (14) disposed therein, the distal femoral osteotomy device further comprising:
and the fastening nail (5) is inserted into the femur (100) after at least part of the fastening nail (5) passes through the fixing hole (14) so as to position the mounting main body (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311499298.0A CN117357196B (en) | 2023-11-10 | 2023-11-10 | Femur distal osteotomy device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311499298.0A CN117357196B (en) | 2023-11-10 | 2023-11-10 | Femur distal osteotomy device |
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| CN117357196A true CN117357196A (en) | 2024-01-09 |
| CN117357196B CN117357196B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311499298.0A Active CN117357196B (en) | 2023-11-10 | 2023-11-10 | Femur distal osteotomy device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118436460A (en) * | 2024-07-08 | 2024-08-06 | 北京爱康宜诚医疗器材有限公司 | Femur measuring device |
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| CN111743599A (en) * | 2020-08-04 | 2020-10-09 | 北京爱康宜诚医疗器材有限公司 | Osteotomy device |
| CN113288329A (en) * | 2021-06-30 | 2021-08-24 | 天衍医疗器材有限公司 | Easy-to-operate adjustable femoral osteotomy tool system |
| CN216933360U (en) * | 2021-11-24 | 2022-07-12 | 北京市春立正达医疗器械股份有限公司 | Adjustable unicondylar femur osteotomy device |
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| US4907578A (en) * | 1986-07-23 | 1990-03-13 | Petersen Thomas D | Method and instruments for resection of the distal femur |
| US20130204258A1 (en) * | 2010-04-20 | 2013-08-08 | Biomet Uk Limited | Unicondylar knee replacement |
| CN106821454A (en) * | 2017-04-17 | 2017-06-13 | 北京大学第三医院 | A kind of femur osteotomy instrument kit |
| CN111743599A (en) * | 2020-08-04 | 2020-10-09 | 北京爱康宜诚医疗器材有限公司 | Osteotomy device |
| CN113288329A (en) * | 2021-06-30 | 2021-08-24 | 天衍医疗器材有限公司 | Easy-to-operate adjustable femoral osteotomy tool system |
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| CN117357196B (en) | 2024-07-09 |
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