CN110477994B - Femur osteotomy positioning guide - Google Patents
Femur osteotomy positioning guide Download PDFInfo
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- CN110477994B CN110477994B CN201910719172.7A CN201910719172A CN110477994B CN 110477994 B CN110477994 B CN 110477994B CN 201910719172 A CN201910719172 A CN 201910719172A CN 110477994 B CN110477994 B CN 110477994B
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 57
- 238000002271 resection Methods 0.000 claims abstract description 72
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 206010061363 Skeletal injury Diseases 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a femur osteotomy positioning guide which is used for connecting a femur resection protection block and a far-end alignment positioning device. The femur osteotomy positioning guide includes a guide body, a slider, a connector, and a locking member. The bottom of the guide body is provided with a guide bar to be connected with the distal end alignment positioning device, a slider is slidably connected with the guide body, a connecting member is mounted at the rear of the slider and used for connecting a femur resection protection block, and a locking member is rotatably connected with the slider. The femur osteotomy positioning guide and the femur resection protection block can be mutually locked or unlocked by operating the locking member to rotate relative to the sliding member. The femur osteotomy positioning guide of the invention conveniently and rapidly connects the distal alignment positioning device to the femur resection protection block, has accurate and reliable connection, ensures that the distal alignment positioning device can effectively and efficiently position the femur resection protection block, has high repeated positioning precision, and ensures the operation effects of different patients.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a femur osteotomy positioning guide.
Background
In orthopedics diagnosis, there are many patients who need to undergo osteotomy due to bone injuries or other pathological changes of bones caused by various accidents.
Taking knee joint as an example, an artificial knee joint prosthesis is generally installed after a diseased portion is removed by osteotomy of a patient. Knee replacement osteotomies generally include distal femur osteotomies, proximal tibia osteotomies, condylar osteotomies, patellar osteotomies, and the like. Because the distal femur part needs to be cut off in surgery, the shape of the cut off is matched with the required position of the plant prosthesis.
The osteotomy positioning device in the prior art has complex structure and high operation difficulty. Therefore, there is an urgent need in the art to develop new simple, easy to operate devices to improve surgical efficiency.
Disclosure of Invention
The invention aims to provide a femur osteotomy positioning guide for connecting a femur resection protection block and a distal alignment positioning device, so as to solve the problems in the prior art.
In order to solve the above-mentioned problems, according to an aspect of the present invention, there is provided a femoral resection positioning guide for connecting a femoral resection protection block and a distal alignment positioning device, wherein the femoral resection positioning guide includes:
A guide body, a guide rod provided at a bottom of the guide body to be connected with the distal end alignment positioning device, and a connection member,
A slider slidably coupled to the guide body,
A connector mounted to the rear of the slider for connecting the femoral resection protection block, an
A locking member rotatably coupled to the slider, wherein
The femur osteotomy positioning guide and the femur resection protection block can be mutually locked or unlocked by operating the locking member to rotate relative to the sliding member.
In one embodiment, the guide body has a relatively wide bottom end and a relatively narrow top end, the bottom end being provided with a notch having a shape matching the shape of the tail of the slider to accommodate the tail of the slider.
In one embodiment, guide rod mounting holes are formed in the left side and the right side of the notch, and the top end of the guide rod is accommodated in the guide rod mounting holes and fixedly connected with the guide body.
In one embodiment, a guide body in front of the notch is provided with a slide groove extending in the front-rear direction for cooperation with a slide rail of the slider so that the slider is slidably connected to the guide body.
In one embodiment, the femur osteotomy positioning guide further comprises a limiting piece, the front end of the sliding groove is provided with a pin hole perpendicular to the bottom of the sliding groove and used for installing the limiting piece, the bottom of the sliding rail of the sliding piece is provided with a limiting groove, and the limiting piece is matched with the limiting groove.
In one embodiment, the guide body is further provided with graduations, which are provided on both sides of the chute.
In one embodiment, the two sides of the chute are further provided with a shaped hole extending from the lower surface to the upper surface in the thickness direction of the guide body.
In one embodiment, the sliding member includes a body portion and a sliding rail integrally formed from the body portion, wherein the body portion is formed with an opening in a reverse direction of the sliding rail, the locking member is formed with a protrusion, and the shape of the opening is matched with the shape of the protrusion of the bottom of the locking member so that the protrusion of the locking member can be inserted into and accommodated in the opening.
In one embodiment, the two sides of the opening form a baffle plate, the baffle plate is provided with a pin hole, the pin hole is matched with a pin shaft, and the pin shaft penetrates into a rotating hole of the locking piece after penetrating through the pin hole, so that the locking piece is rotatably connected to the sliding piece.
In one embodiment, a spring hole extending from top to bottom is arranged in front of the opening, and the lower end of the spring is installed in the spring hole.
In one embodiment, a lower portion of the main body portion of the slider is provided with a connector mounting hole extending in a length direction of the slide rail, and the connector mounting hole is located below the slide rail.
In one embodiment, the connector includes a relatively larger diameter posterior portion that passes into the connecting bore of the femoral resection protection block and a relatively smaller diameter anterior portion that is fixedly mounted in the mounting bore of the slider.
Preferably, the length of the front portion is greater than the thickness of the body portion of the slider, such that the front portion passes through the mounting hole and protrudes from the surface of the body portion.
In one embodiment, the front part of the connecting piece is provided with a fixing hole in the radial direction of the connecting piece, which is fitted with a fixing pin for fixing the spring, which fixing pin fixes the spring into the spring hole of the slider and further protrudes into the fixing hole.
In one embodiment, sliding parts matched with the sliding grooves are arranged on two sides of the sliding rail of the sliding piece, and the thickness of the sliding parts is smaller than that of the main body part of the sliding rail, so that the sliding parts can be matched with the sliding grooves better.
In one embodiment, the front end of the sliding rail is provided with a protruding part protruding upwards.
In one embodiment, a limit groove extending along the length direction of the sliding rail is formed in the bottom of the sliding rail, and the limit groove is matched with a limit piece on the guider main body.
In one embodiment, the locking member has a rectangular parallelepiped main body, and a projection integrally projecting downward from a bottom surface of the main body, the projection being shaped to match an opening of the slider so as to be accommodated in the opening.
In one embodiment, the protruding portion is provided with a rotation hole in a width direction, and the rotation hole is provided at a bottom of the protruding portion and cooperates with a pin hole of the slider to penetrate a pin shaft so as to rotatably interconnect the locking member and the slider.
In one embodiment, a locking part is arranged at the rear of the bottom surface of the locking part main body, the locking part integrally extends downwards from the bottom surface of the locking part main body to form, and the locking part is matched with a locking groove of the femur osteotomy protection block so as to mutually lock the guider and the femur osteotomy protection block.
In one embodiment, the upper surface of the locking member body is provided with a plurality of grooves and protrusions which are arranged at intervals so as to increase the friction force between the finger and the surface during manual operation.
In one embodiment, the latch body is further provided with a spring fixing hole extending from an upper surface to a lower surface of the latch body to receive a spring pin for fixing the spring.
The femur osteotomy positioning guide of the invention conveniently and rapidly connects the distal alignment positioning device to the femur resection protection block, has accurate and reliable connection, ensures that the distal alignment positioning device can effectively and efficiently position the femur resection protection block, has high repeated positioning precision, and ensures the operation effects of different patients.
Drawings
Fig. 1 is a perspective view of a femoral resection protection block.
Fig. 2 is a front view of a distal alignment positioning device.
Fig. 3 is an exploded perspective view of the femoral resection positioning guide of the present invention.
Fig. 4 is a perspective view of the femoral resection positioning guide of the present invention.
Fig. 5 is an exploded perspective view of the guide body of the present invention.
Fig. 6 is a front view of the slide, connector and locking member of the femoral resection positioning guide of the present invention.
Fig. 7 is a front view of the slide and connector of the femoral resection positioning guide of the present invention.
Fig. 8 is a top view of the slide and connector of the femoral resection positioning guide of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings, so that the objects, features and advantages of the present invention will be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.
In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present invention, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.
Some surgical procedures require the distal portion of the femur to be resected, and the resected shape is matched in position to the plant prosthesis. The inventor has conducted extensive and intensive studies, and for the first time developed an osteotomy positioning assembly with a simple structure from the viewpoint of convenience for use by medical workers, the assembly comprises a femur resection protection block, a femur resection positioning guide and a distal end alignment positioning device, and the three components are detachably and fixedly connected in a spring buckle connection mode, a positioning pin thread locking connection mode and the like, so that the assembly is convenient to detach and ingenious in matching, the correct installation position of the femur resection protection block can be ensured, and the consistency of the medical workers in operation on the operation of the patient using instrument method can be ensured.
In this osteotomy positioning assembly, the femur resection block is fixed in the femur and then the unnecessary portions of the femur are resected in accordance with the predetermined slot pattern, and the femur resection positioning guide and the distal alignment positioning device serve as a guide rotation device, matching the parallel vertical lines. Among them, the femur resection protection block as shown in fig. 1 is the most important part because it is required to cut off unnecessary parts according to a predetermined groove shape after being fixed in the femur. The other two components are guiding and rotating devices matched with the parallel vertical lines.
As used herein, the term "distal" refers to the portion of the femur that is to be resected. As used herein, the terms "riser" and "riser" are used interchangeably to refer to a straight instrument that is used externally to a physician. The vertical line is used to match whether the femoral angle instrument is properly installed.
The vertical wire rod is a rod-shaped object matched with the far-end alignment device, one end of the vertical wire rod can be provided with a pointed end, the vertical wire rod can be conveniently inserted into the far-end alignment device, and the vertical wire rod can be further provided with threads matched with the far-end alignment device.
The procedure is that the stem is inserted into the distal alignment fixture, the femoral resection block 300 of fig. 1 is then installed in connection with the femoral resection positioning guide 100 of the present invention by adjusting the desired angle, and then inserted into the distal alignment fixture 200 of fig. 2.
The femoral resection block 300 of fig. 1 is then secured to the patient's femur by means of a locating pin so that the physician can find the desired angle to resect the distal portion of the femur. The angle of normal line pole of normal fit to and through the cooperation connection of spring button, ensure that thighbone excision protection piece mounted position is correct.
In the operation process, firstly, the function of cutting bones is ensured, screw holes at different positions are arranged in the femur resection protection block, and the femur resection protection block can be accurately positioned while adjusting the instrument, so that the femur resection amount in the operation is ensured to be stable. The locating pin holes and the sawing grooves in the osteotomy are important structures in the operation. Wherein the accuracy of the position of the saw groove is high. In order to ensure the rotation fit of the vertical line angle, the femur osteotomy distal end alignment positioning device is utilized to ensure that the vertical line rod can rotate to a certain position. Meanwhile, the precision of the matched features is very high, and a stable and accurate connection mode can be achieved each time. In order to ensure quick and convenient connection, the femur osteotomy positioning guide device is used for ensuring accurate connection and high matching precision.
Fig. 1 is a perspective view of a femoral resection block and fig. 2 is a front view of a distal alignment positioning device, as shown in fig. 1-2, with a femoral resection positioning guide 100 of the present invention for use in connection with the femoral resection block 300 of fig. 1 and the distal alignment positioning device of fig. 2.
The inventive femoral resection positioning guide is described in detail below with reference to fig. 3-7.
Fig. 3 is an exploded perspective view of the femoral resection positioning guide of the present invention, and fig. 4 is a perspective view of the femoral resection positioning guide of the present invention. As shown in fig. 3 and 4, the femoral resection positioning guide 100 generally includes a guide body 10, a slider 20, a connector 30, and a locking member 40. The guide body 10 is provided at the bottom thereof with a guide bar 11 to be coupled with the distal alignment positioning device 200, the slider 20 is slidably coupled with the guide body 10, the coupling member 30 is mounted at the rear of the slider 20 and is used to couple the femur resection protection block 300, and the locking member 40 is rotatably coupled with the slider 20. The femoral resection positioning guide 100 and the femoral resection protection block 300 can be interlocked or unlocked by manipulating the rotation of the locking member 40 relative to the slide 20.
Fig. 5 is an exploded perspective view of the guide body 10 of the present invention. The guide body 10 of the present invention will be described in detail with reference to fig. 5. As shown in fig. 5, the guide body 10 generally has a trapezoidal shape with a relatively wide bottom end and a relatively narrow top end, the bottom end being provided with a notch 12, the notch 12 being shaped to match the shape of the tail of the slider 20 so as to accommodate the tail of the slider 20, as will be further described below.
Guide rod mounting holes 13 are formed in the left side and the right side of the notch 12, the top ends of the two guide rods 11 are respectively accommodated in the guide rod mounting holes 13 on the two sides of the notch 12 and fixedly connected with the guide body 10, a sliding groove 14 extending in the front-rear direction is formed in the guide body in front of the notch 12, and the sliding groove 14 is used for being matched with a sliding rail 22 of the sliding piece 20 so as to slidably connect the sliding piece 20 to the guide body 10. The front end of the chute 14 is provided with a pin hole 15 perpendicular to the bottom of the chute 14, the pin hole 15 is matched with a limiting piece 151, and the limiting piece 151 is matched with a limiting groove at the bottom of the sliding rail 22 of the sliding piece 20, so that the sliding displacement of the sliding rail 22 along the chute 14 is limited, and the sliding rail 22 cannot slide forwards along the chute 14 any more and exceeds the foremost end of the guider main body 10.
The bottom of the chute 14 is also provided with four symmetrically distributed support holes 16 (only two of which are shown on one side and the other two are hidden from view by a baffle above the chute). The support hole 16 is matched with the support pin 161, and the support pin 161 extends into the support hole from bottom to top and supports the bottom of the slide rail 21 so as to reduce friction between the slide rail and the slide groove.
With continued reference to fig. 5, the guide body 10 is also provided with graduations 17, the graduations 17 being disposed on either side of the chute 14, the graduations 17 being operative to indicate the angle through which the guide body 17 is rotated relative to the femoral resection block. Thereby facilitating the doctor to grasp the operation precision more intuitively when operating. The chute 14 is also provided with shaped holes 18 on both sides, the shaped holes 18 extending from the lower surface to the upper surface in the thickness direction of the guide body 10. The anisotropic holes 18 facilitate, in operation, the observation from above of whether the guide bar 11 is aligned with the guide holes of the distal alignment fixture, thereby facilitating the insertion of the guide bar 11 into the guide holes 210 of the distal alignment fixture 200.
Fig. 6 is a front view of the slide, connector and locking member of the femoral resection positioning guide of the present invention, fig. 7 is a front view of the slide and connector of the femoral resection positioning guide of the present invention, and fig. 8 is a top view of the slide and connector of the femoral resection positioning guide of the present invention. As shown in fig. 6-8, slider 20 generally includes a body portion 21 and a slide rail 22 integrally extending forwardly from body portion 21. The body portion 21 is formed in a rectangular or square body as a whole and is formed with an opening 23 at the rear, and the shape of the opening 23 is matched with the shape of the projection 41 at the bottom of the locking member 40 so that the projection 41 of the locking member 40 can be projected into and accommodated in the opening 22 at the rear of the slider 20.
The baffle plate 24 is formed at both sides of the opening 23, and the baffle plate 24 is provided with a pin hole 25, the pin hole 25 is matched with a pin shaft 251, and the pin shaft 251 penetrates into the rotating hole 42 of the locking member 40 after passing through the pin hole 25, so that the locking member 40 is rotatably connected to the sliding member 20. The front of the opening 23 is provided with a spring hole 24 extending from top to bottom, the spring hole 24 is matched with a spring 241, the lower end of the spring 241 is arranged in the spring hole 24, and the upper end of the spring 241 abuts against the bottom of the locking piece 40. As will be described in further detail below.
The lower portion of the main body portion 21 of the slider 20 is provided with a connector mounting hole 26 extending in the length direction of the slide rail 22, and the connector mounting hole 26 is located below the slide rail 22. The connector 30 is generally cylindrical and includes a relatively larger diameter rear portion 31 and a relatively smaller diameter front portion 32, the rear portion 31 being adapted to be received within the attachment bore of the femoral resection block, the front portion 32 being fixedly mounted within the mounting bore 26 of the slider 20. Preferably, the length of the front portion 32 is greater than the thickness of the body portion 21 of the slider 20, such that the front portion 32 passes through the mounting hole 26 and protrudes beyond the surface of the body portion 21. Accordingly, a pin hole (not shown) is provided in the notch 12 of the guide body 10 to be fitted with the front portion 31 of the link 30, and the rear portion 31 of the link 30 passes through the mounting hole 26 of the slider 20 and protrudes into the pin hole of the link 30 to serve to position the slider 20 and the guide body 10 with each other.
In this embodiment, the front portion 32 of the connector 30 is provided with a fixing hole 321 in the radial direction of the connector, which cooperates with a fixing pin connected to fix the spring, which fixes the spring into the spring hole 24 of the slider 20 and further protrudes into the fixing hole 321.
On both sides of the slide rail 22 of the slide 20 are sliding portions 221 that are engaged with the slide groove 14, and the thickness of the sliding portions 221 is thinner than that of the main body portion of the slide rail 22, so that the sliding portions can be engaged with the slide groove 14 better. A projection 222 projecting upward is provided at the front end of the slide rail 22. The bottom of the slide rail 22 is provided with a limit groove 223 extending along the length direction of the slide rail 22, the limit groove 223 is matched with a limit piece 151 on the guider main body 10, and when the slide rail 22 of the slider 21 slides along the slide groove 14 of the guider main body 10, the limit piece 151 is matched in the limit groove 223 for limiting.
With continued reference to fig. 6-8, retaining member 40 has a rectangular parallelepiped body 44 with a projection 41 integrally projecting downwardly from a bottom surface of body 43, projection 41 being shaped to mate with opening 23 of slider 20 for receipt within opening 23. The protruding portion 41 is provided with a rotation hole 42 in the width direction, the rotation hole 42 is provided at the bottom of the protruding portion 41 and cooperates with the pin hole 25 of the slider 20 to penetrate the pin shaft 251, and the locking member 40 and the slider 20 are rotatably connected to each other by fitting the protruding portion 41 of the locking member 40 into the opening 23 and penetrating the pin shaft 251 into the pin hole 25 and the optional hole 42.
The locking part 44 is provided at the rear of the bottom surface of the locking member body 43, and the locking part 44 is a protrusion integrally protruding downward from the bottom surface of the locking member body 43 in this embodiment, the protrusion is located at one side of the protruding part 41 where the connecting member 30 is located, and the locking part 44 is engaged with a locking groove of the femur osteotomy protection block, so that the guide 100 and the femur osteotomy protection block can be locked to each other.
The upper surface of the locker body 43 is provided with a plurality of grooves and protrusions arranged at intervals to increase friction between the finger and the surface during manual operation, thereby playing a role in preventing slip. The locker body 43 is further provided with a spring fixing hole 46, and the spring fixing hole 46 extends from an upper surface to a lower surface of the locker body 43 to receive a spring pin (not shown) fixing the spring 241. The spring fixing hole 46 and the locking portion 44 are located at both front and rear sides of the protruding portion 41, respectively. When unlocking is required, the front part of the locking member body 43 is pressed, the locking member body 43 applies downward force to the spring 241 to overcome the spring force and retract the spring 231, the locking member 43 rotates around the pin shaft 251 by taking the protruding part 41 as a fulcrum, the locking part 44 lifts up to withdraw from the locking groove 320 of the femur resection protection block 300, and the whole guide 100 is pulled forwards, so that the connecting post 30 withdraws from the connecting hole 310 of the femur resection positioning protection block 300, and the guide 100 is separated from the femur resection protection block 300.
When it is necessary to connect the guide 100 with the femoral resection protection block 300, the femoral resection protection block and the guide 100 are connected to each other and locked by inserting the rear portion 31 of the connection member 30 into the connection hole 310 of the femoral resection protection block 300 and then pressing the locker body 43 to apply pressure to the spring 241 to force the spring 231 to contract against the elastic force of the spring, thereby lifting the locking portion 44 to be caught in the locking groove 320 of the femoral resection protection block 300. During surgery, the positioning device may be aligned by rotating the distal end to adjust the angle, at which point the scale 17 may indicate the angle of rotation.
The femur osteotomy positioning guide of the invention conveniently and rapidly connects the distal alignment positioning device to the femur resection protection block, has accurate and reliable connection, ensures that the distal alignment positioning device can effectively and efficiently position the femur resection protection block, has high repeated positioning precision, and ensures the operation effects of different patients. Simultaneously, the position of the locking piece relative to the sliding piece can be adjusted, the rotating angle in the operation process can be indicated, and meanwhile, the sliding connection mode of the locking piece and the sliding piece and the visual cooperation operation of the guide rod and the guide hole bring great convenience to the operation.
While the preferred embodiments of the present application have been described in detail, it will be appreciated that those skilled in the art, upon reading the above teachings, may make various changes and modifications to the application. Such equivalents are also intended to fall within the scope of the application as defined by the following claims.
Claims (11)
1. A femoral resection positioning guide for connecting a femoral resection protection block and a distal alignment positioning device, the femoral resection positioning guide comprising:
A guide body, the bottom of which is provided with a guide rod to be connected with the distal end alignment positioning device,
A slider slidably coupled to the guide body,
A connector mounted to the rear of the slider for connecting the femoral resection protection block, an
A locking member rotatably coupled to the slider, wherein
The femur osteotomy positioning guide and the femur resection protection block can be mutually locked or unlocked by operating the locking member to rotate relative to the sliding member;
The guide body having a relatively wide bottom end and a relatively narrow top end, the bottom end being provided with a notch having a shape matching the shape of the tail of the slider to accommodate the tail of the slider; guide rod mounting holes are formed in the left side and the right side of the notch, the top end of the guide rod is contained in the guide rod mounting holes and fixedly connected with the guide body, and the guide rod is inserted into the guide holes of the far-end alignment positioning device;
The sliding piece comprises a main body part and a sliding rail integrally extending from the main body part, wherein an opening is formed in the main body part along the opposite direction of the sliding rail, the locking piece is formed with a convex part, and the shape of the opening is matched with that of the convex part at the bottom of the locking piece, so that the convex part of the locking piece can extend into and be accommodated in the opening; the two sides of the opening are provided with baffle plates, the baffle plates are provided with pin holes, the pin holes are matched with pin shafts, and the pin shafts penetrate into rotating holes of the locking pieces after penetrating through the pin holes, so that the locking pieces are rotatably connected to the sliding pieces; the lower part of the main body part of the sliding part is provided with a connecting part mounting hole extending along the length direction of the sliding rail, and the connecting part mounting hole is positioned below the sliding rail;
A sliding groove extending along the front-rear direction is arranged on the guider main body in front of the notch and is used for being matched with the sliding rail of the sliding piece, so that the sliding piece is slidably connected to the guider main body; the femur osteotomy positioning guide device further comprises a limiting piece, the front end of the sliding groove is provided with a pin hole perpendicular to the bottom of the sliding groove and used for installing the limiting piece, the bottom of a sliding rail of the sliding piece is provided with a limiting groove, and the limiting piece is matched with the limiting groove to limit the sliding displacement of the sliding rail along the sliding groove;
the connecting piece comprises a rear part with a relatively larger diameter and a front part with a relatively smaller diameter, the rear part penetrates into a connecting hole of the femur resection protection block, and the front part is fixedly arranged in the connecting piece mounting hole of the sliding piece;
the retaining member has a cuboid-shaped main body, the bottom surface of the main body integrally downwards extends out of the protruding portion, the shape of the protruding portion is matched with that of the opening of the sliding member so as to be contained in the opening, the protruding portion is provided with a rotary hole along the width direction, the rotary hole is arranged at the bottom of the protruding portion and matched with a pin hole of the sliding member so as to penetrate into a pin shaft, the retaining member is rotatably connected with the sliding member, a locking portion is arranged at the rear of the bottom surface of the retaining member main body, the locking portion integrally downwards extends out of the bottom surface of the retaining member main body so as to be formed, and the locking portion is matched with a locking groove of the femur osteotomy protection block so as to lock the guide and the femur osteotomy protection block.
2. The femoral resection positioning guide of claim 1, wherein the guide body is further provided with graduations disposed on either side of the chute.
3. The femoral resection positioning guide of claim 1, wherein the runner is further provided with shaped holes on both sides thereof, the shaped holes extending from a lower surface to an upper surface along a thickness direction of the guide body.
4. The femoral resection positioning guide of claim 1, wherein a spring hole extending from top to bottom is provided in front of the opening, and a lower end of the spring is mounted in the spring hole.
5. The femoral resection positioning guide of claim 4, wherein the length of the front portion is greater than the thickness of the body portion of the slider such that the front portion passes through the mounting hole and protrudes from a surface of the body portion.
6. The femoral resection positioning guide of claim 4, wherein the anterior portion of the connector has a fixation hole along a radial direction of the connector that mates with a fixation pin that secures the spring within the spring hole of the slider and further extends into the fixation hole.
7. The femoral resection positioning guide of claim 4, wherein the slide rail of the slide is provided with a slide portion on both sides thereof that mates with the runner, the slide portion having a thickness that is thinner than a thickness of a body portion of the slide rail so as to better mate with the runner.
8. The femoral resection positioning guide of claim 4, wherein the front end of the slide is provided with an upwardly projecting tab.
9. The femoral resection positioning guide of claim 4, wherein the bottom of the slide rail has a limit slot extending along the length of the slide rail, the limit slot mating with a limit feature on the guide body.
10. The femoral resection positioning guide of claim 1, wherein the upper surface of the locking member body is provided with a plurality of spaced grooves and protrusions to increase the friction of the finger with the surface during manual operation.
11. The femoral resection positioning guide of claim 1, wherein the retaining member body further has a spring retention hole extending from an upper surface of the retaining member body to a lower surface to receive a spring pin that secures the spring.
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| CN201910719172.7A CN110477994B (en) | 2019-08-08 | 2019-08-08 | Femur osteotomy positioning guide |
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| CN201910719172.7A CN110477994B (en) | 2019-08-08 | 2019-08-08 | Femur osteotomy positioning guide |
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| CN110477994B true CN110477994B (en) | 2024-08-02 |
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| CN111053591B (en) * | 2019-12-30 | 2024-06-04 | 北京市春立正达医疗器械股份有限公司 | Intercondylar osteotomy guide |
| CN111281476B (en) * | 2020-03-10 | 2021-04-27 | 北京市春立正达医疗器械股份有限公司 | Medullary cavity filing handle |
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| KR100566767B1 (en) * | 2004-04-27 | 2006-03-31 | 서재곤 | Lineup copulative device for copulating femur cutter with tibia cutter |
| US20080119938A1 (en) * | 2006-11-17 | 2008-05-22 | Sang Soo Oh | Knee joint prosthesis for bi-compartmental knee replacement and surgical devices thereof |
| CN107647899B (en) * | 2016-07-26 | 2020-06-26 | 北京蒙太因医疗器械有限公司 | Osteotomy device for knee replacement surgery |
| CN208319272U (en) * | 2017-08-24 | 2019-01-04 | 北京纳通医学科技研究院有限公司 | Knee joint femoral cuts positioning guide plate |
| CN109846528B (en) * | 2019-03-01 | 2021-04-02 | 山东新华联合骨科器材股份有限公司 | Joint replacement surgery auxiliary positioning method and system based on inertial navigation |
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