Femoral osteotomy positioning component

Abstract

The present invention discloses a femoral osteotomy positioning assembly, comprising a femoral resection protection block, a femoral osteotomy positioning guide, and a distal alignment positioning device. The femoral osteotomy positioning guide is provided with a guide rod and a connecting column, the distal alignment positioning device is provided with a guide hole, the femoral resection protection block is provided with a connecting hole, the distal alignment positioning device and the femoral osteotomy positioning guide are connected to each other by extending the guide rod into the guide hole, the femoral positioning guide and the femoral resection protection block are connected to each other by inserting the connecting column into the connecting hole, and the femoral positioning guide is also provided with a locking piece. The femoral resection protection block is provided with a locking groove, and the locking piece cooperates with the locking groove to lock the femoral osteotomy positioning guide and the femoral resection protection block to each other. The osteotomy positioning assembly has a simple structure, is easy to operate, and can be accurately positioned.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more particularly to a femoral osteotomy positioning component. Background Art

[0002] In some orthopedic surgeries, it is necessary to cut off part of the distal femur bone to install a prosthesis, and the shape of the cutoff and the prosthesis should match in position, so a distal osteotomy positioning device is needed for precise positioning. However, the osteotomy positioning device in the prior art has a complex structure and is difficult to operate. Therefore, the art is in urgent need of developing a new osteotomy positioning device with a simple structure and easy operation to improve the efficiency of the operation. Summary of the invention

[0003] The purpose of the present invention is to provide an osteotomy positioning device which has a simple structure, is easy to operate and has accurate positioning.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an osteotomy positioning component, which includes a femoral resection protection block, a femoral osteotomy positioning guide and a distal alignment positioning device, the femoral osteotomy positioning guide is provided with a guide rod and a connecting piece, the distal alignment positioning device is provided with a guide hole, the femoral resection protection block is provided with a connecting hole, the distal alignment positioning device and the femoral osteotomy positioning guide are connected to each other by extending the guide rod into the guide hole, the femoral positioning guide and the femoral resection protection block are connected to each other by inserting the connecting piece into the connecting hole, the femoral positioning guide is also provided with a locking piece, the femoral resection protection block is provided with a locking groove, and the locking piece cooperates with the locking groove to lock the femoral osteotomy positioning guide and the femoral resection protection block to each other.

[0005] In one embodiment, the femoral resection protection block is provided with a pin hole pair and a saw groove, the saw groove is arranged at the front end of the femoral resection protection block, the pin hole pair is arranged behind the saw groove, and the osteotomy positioning assembly is fixed to the femur by driving a pin through the pin hole pair into the femur.

[0006] In one embodiment, the locking groove is disposed behind the saw groove and between the pair of pin holes.

[0007] In one embodiment, the upper surface of the femoral resection protection block is also provided with a slide groove, which extends backward along the width direction of the femoral resection block. A locking hole is provided in the slide groove to cooperate with the locking piece on the femoral osteotomy positioning guide to lock the femoral osteotomy positioning guide with the femoral resection protection block.

[0008] In one embodiment, the pin hole pair is arranged on both sides of the slide groove and includes a plurality of pin holes, and the plurality of pin holes correspond to different positions on the femur.

[0009] In one embodiment, the upper surface of the femoral resection protection block is provided with two protrusions, the two protrusions are distributed on both sides of the slide groove, and the pin hole pair is arranged on the protrusions.

[0010] In one embodiment, the upper surface of the femoral resection protection block is further provided with at least two additional pin holes, and the at least two additional pin holes are distributed on both sides of the slide groove and are located outside the two protrusions.

[0011] In one embodiment, a vertical distance between the at least two additional pin holes and the saw groove is smaller than a vertical distance between the pair of pin holes and the saw groove.

[0012] In one embodiment, the lower surface of the femoral resection protection block is an arc-shaped surface to match the shape of the femur at the surgical site.

[0013] In one embodiment, the upper surface of the femoral resection protection block is an arc-shaped surface, the top of the arc-shaped surface is located at the position of the slide groove, and the saw groove extends along the circumference of the arc-shaped surface.

[0014] In one embodiment, the pin hole pairs include two groups of pin holes, the two groups of pin holes are arranged on both sides of the slide slot, and each group of pin hole pairs includes three pin holes, and the hole centers of the three pin holes form three vertices of an equilateral triangle.

[0015] In one embodiment, the connection hole extends from the front surface of the femoral resection protection block to the rear surface of the femoral resection protection block.

[0016] In one embodiment, the femoral osteotomy positioning guide comprises a guide body, and the guide rod and the connecting member are disposed at the bottom of the guide body.

[0017] In one embodiment, the femoral osteotomy positioning guide also includes a sliding member, which is slidably connected to the guide body, the connecting member is installed at the rear of the sliding member and is used to connect the femoral resection protection block, and the locking member is rotatably connected to the sliding member.

[0018] In one embodiment, the guide body has a relatively wider bottom end and a relatively narrower top end, the bottom end is provided with a notch, and the shape of the notch matches the shape of the tail of the slider to accommodate the tail of the slider.

[0019] In one embodiment, guide rod mounting holes are provided on the left and right sides of the notch, and the top end of the guide rod is accommodated in the guide rod mounting hole and fixedly connected to the guide body.

[0020] In one embodiment, a slide groove extending in the front-to-back direction is provided on the guide body in front of the notch, and the slide groove is used to cooperate with the slide rail of the sliding member, so that the sliding member can be slidably connected to the guide body.

[0021] In one embodiment, the femoral osteotomy positioning guide also includes a limiting piece, the front end of the slide groove is provided with a pin hole perpendicular to the bottom of the slide groove for installing the limiting piece, the bottom of the slide rail of the sliding piece is provided with a limiting groove, and the limiting piece cooperates with the limiting groove.

[0022] In one embodiment, the guide body is further provided with scales, and the scales are arranged on both sides of the slide groove.

[0023] In one embodiment, special-shaped holes are further provided on both sides of the slide groove, and the special-shaped holes extend from the lower surface to the upper surface along the thickness direction of the guide body.

[0024] In one embodiment, the sliding member includes a main body portion and a slide rail integrally extending from the main body portion, wherein the main body portion is formed with an opening along the opposite direction of the slide rail, and the locking member is formed with a protrusion, and the shape of the opening matches the shape of the protrusion at the bottom of the locking member so that the protrusion of the locking member can extend into and be accommodated in the opening.

[0025] In one embodiment, baffles are formed on both sides of the opening, and the baffles are provided with pin holes, and the pin holes cooperate with the pin shafts. The pin shafts pass through the pin holes and then into the rotating hole of the locking member, so that the locking member can be rotatably connected to the sliding member.

[0026] In one embodiment, a spring hole extending from top to bottom is provided in front of the opening, and the lower end of the spring is installed in the spring hole.

[0027] In one embodiment, a connector mounting hole extending along the length direction of the slide rail is provided at the lower portion of the main body portion of the slide member, and the connector mounting hole is located below the slide rail.

[0028] In one embodiment, the connecting member includes a rear portion with a relatively larger diameter and a front portion with a relatively smaller diameter, the rear portion penetrates into the connecting hole of the femoral resection protection block, and the front portion is fixedly installed in the installation hole of the sliding member.

[0029] Preferably, the length of the front portion is greater than the thickness of the main body portion of the sliding member, so that the front portion passes through the mounting hole and protrudes from the surface of the main body portion.

[0030] In one embodiment, a fixing hole is provided at the front of the connecting member along the radial direction of the connecting member, and the fixing hole cooperates with a fixing pin of a fixing spring, and the fixing pin fixes the spring into the spring hole of the sliding member and further extends into the fixing hole.

[0031] In one embodiment, sliding parts cooperating with the slide groove are arranged on both sides of the slide rail of the sliding member, and the thickness of the sliding parts is thinner than the thickness of the main body of the slide rail, so that they can better cooperate with the slide groove.

[0032] In one embodiment, the front end of the slide rail is provided with a protrusion protruding upward.

[0033] In one embodiment, a limiting groove extending along the length direction of the slide rail is provided at the bottom of the slide rail, and the limiting groove cooperates with a limiting piece on the guide body.

[0034] In one embodiment, the locking member has a rectangular parallelepiped body, and a protrusion extends downward from the bottom surface of the body. The shape of the protrusion matches the opening of the sliding member so as to be accommodated in the opening.

[0035] In one embodiment, the protrusion is provided with a rotation hole along the width direction, the rotation hole is arranged at the bottom of the protrusion and cooperates with the pin hole of the sliding member to penetrate the pin shaft, so as to rotatably connect the locking member and the sliding member to each other.

[0036] In one embodiment, a locking portion is provided at the rear of the bottom surface of the locking member body, and the locking portion is integrally extended downward from the bottom surface of the locking member body, and the locking portion cooperates with the locking groove of the femoral osteotomy protection block to lock the guide and the femoral osteotomy protection block together.

[0037] In one embodiment, the upper surface of the locking member body is provided with a plurality of grooves and protrusions arranged at intervals to increase the friction between the finger and the surface during manual operation.

[0038] In one embodiment, a spring fixing hole is further provided on the locking member body, and the spring fixing hole extends from the upper surface of the locking member body to the lower surface to accommodate a spring pin for fixing the spring.

[0039] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as embodiments) can be combined with each other to form a new or preferred technical solution. Due to space limitations, they will not be described one by one here.

[0040] The main advantages of the present invention include:

[0041] (a) The osteotomy positioning assembly of the present invention has a simple structure;

[0042] (b) The various components of the osteotomy positioning assembly of the present invention are respectively connected and fixed by spring buttons and bolts, which is easy to operate, and is convenient to install and disassemble, greatly improving the efficiency of doctors in using the instrument;

[0043] (c) The osteotomy positioning assembly of the present invention rotates to match the angle of the vertical rod, effectively ensuring that the femoral resection protection block is installed in the correct position, thereby improving the efficiency of the operation;

[0044] (d) The osteotomy positioning assembly of the present invention has accurate and reliable connection features and high repeated positioning accuracy, thereby ensuring that different patients can achieve consistent surgical results by using the osteotomy positioning assembly of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a stereoscopic view of a femoral resection protection block of the present invention;

[0046] Figure 2 is a top view of the femoral resection protection block of the present invention;

[0047] Figure 3 is a bottom view of the femoral resection protection block of the present invention;

[0048] Figure 4 is a front view of a femoral resection protection block of the present invention;

[0049] Figure 5 is a partial cross-sectional view of a femoral resection protection block of the present invention;

[0050] Figure 6 The femoral resection protection block of the present invention is Figure 4 A sectional view taken through the plane FF in FIG.

[0051] Figure 7 The femoral resection protection block of the present invention is Figure 6 A cross-sectional view taken along line GG in FIG.

[0052] Figure 8 is a three-dimensional exploded view of the femoral osteotomy positioning guide of this embodiment;

[0053] Fig. 9 is a stereoscopic view of the femoral osteotomy positioning guide of this embodiment;

[0054] Fig.10 is a three-dimensional exploded view of the guide body of the present invention;

[0055] Fig.11 It is a front view of the sliding member, the connecting member and the locking member of the femoral osteotomy positioning guide of the present invention;

[0056] Fig.12It is a front view of the sliding member and the connecting member of the femoral osteotomy positioning guide of the present invention;

[0057] Fig.13 It is a top view of the sliding member and the connecting member of the femoral osteotomy positioning guide of the present invention;

[0058] Fig.14 A front view showing the distal end alignment positioning device of the present invention; and

[0059] Fig.15 A perspective exploded view of the distal end alignment and positioning device of the present invention is shown. DETAILED DESCRIPTION

[0060] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods for the unrecorded specific conditions in the following examples are usually based on conventional conditions or the conditions recommended by the manufacturer. Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0061] It should be noted that in the claims and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] After extensive and in-depth research, the inventor has developed a simple osteotomy positioning assembly for the first time from the perspective of convenience for medical workers. The assembly includes a femoral resection protection block, a femoral osteotomy positioning guide, and a distal alignment positioning device. The three components are detachably fixed and connected by means of spring buckle connection, positioning pin thread locking connection, etc., which are convenient to disassemble and cleverly matched, and can ensure the correct installation position of the femoral resection protection block and ensure the consistency of the medical worker's instrument technique on the patient during the operation. In the osteotomy positioning assembly, after the femoral resection protection block is fixed in the femur, the unnecessary part of the femur is cut off according to the established groove shape. The femoral osteotomy positioning guide and the distal alignment positioning device are used as guide rotation devices to match the parallel vertical lines.

[0063] The present invention has been completed on this basis.

[0064] Terminology

[0065] As used herein, the term "distal end" refers to the portion of the femur that needs to be amputated.

[0066] As used herein, the terms "stand wire" and "stand wire rod" are used interchangeably to refer to a straight instrument that is external to the surgeon. The stand wire is used to match the angle of the femur to determine if the instrument is properly installed.

[0067] In some surgical procedures, it is necessary to cut off part of the distal femur bone, and the shape of the cut bone and the position of the implant need to match. Figure 1 The femoral resection protection block shown is the most important positioning part, because after fixing it in the femur, the unnecessary part needs to be cut off according to the established groove shape. The other two components are guide rotation devices for matching parallel vertical lines.

[0068] The sequence of the operation is to insert the wire rod into the distal alignment device, adjust the required angle, and then connect and install the femoral resection protection block with the femoral osteotomy positioning guide, and then insert it into the distal alignment device. The wire rod is a rod-shaped object that matches the distal alignment device. The wire rod can be made with a pointed head at one end to facilitate insertion into the distal alignment device. The wire rod can also be provided with a thread that matches the distal alignment device. The femoral resection protection block is then fixed to the patient's femur by a positioning pin, so that the doctor can find a predetermined angle to resect the distal part of the femur. The angle of the wire rod is turned to match, and the matching connection through the spring button ensures that the femoral resection protection block is installed in the correct position.

[0069] During the operation, first ensure that the function is to cut the head. There are screw holes in different positions in the femoral resection protection block. While adjusting the instrument, it can be accurately positioned to ensure the stability of the femoral osteotomy during the operation. The positioning pin hole and sawing groove in the osteotomy are necessary features in the operation. The position accuracy of the sawing groove is very high. In order to ensure the rotational coordination of the vertical line angle, the femoral osteotomy distal end alignment positioning device is used to ensure that the vertical line rod can be rotated to a certain position. At the same time, the coordination feature accuracy is very high, and a stable and accurate connection method can be achieved every time. In order to ensure quick and convenient connection, a positioning guide is used to ensure accurate connection and high coordination accuracy. The design of the spring button is easy to operate and quick and reliable to use.

[0070] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0071] like Figure 1-15As shown, a typical osteotomy positioning assembly of the present invention generally comprises a femoral osteotomy positioning guide 100A, a femoral resection protection block 100B and a distal alignment positioning device 100C, wherein the femoral resection protection block 100B is connected to the femoral osteotomy positioning guide 100A, wherein the femoral osteotomy positioning guide 100A is provided with a guide rod 11A and a connecting column 30A.

[0072] The distal alignment positioning device 100C is provided with a guide hole 31C. The femoral resection protection block 100B is provided with a connecting hole 310B, and the distal alignment positioning device 100C and the femoral osteotomy positioning guide 100A are connected to each other by extending the guide rod 11A into the guide hole 31C. The femoral positioning guide 100A and the femoral resection protection block 100B are connected to each other by inserting the connecting column 30A into the connecting hole 310B. The femoral osteotomy positioning guide 100A is also provided with a locking member 40A. The femoral resection protection block 100B is provided with a locking groove 41B. The locking member 40A cooperates with the locking groove 41B to lock the femoral osteotomy positioning guide 100A and the femoral resection protection block 100B to each other.

[0073] Refer to the following Figure 1-7 The femoral resection protection block of the present invention is described in detail. Figure 1 is a stereoscopic view of a femoral resection protection block of the present invention, Figure 2 is a top view of the femoral resection protection block of the present invention, Figure 3 is a bottom view of the femoral resection protection block of the present invention, Figure 4 is a front view of the femoral resection protection block of the present invention, Figure 5 is a partial cross-sectional view of a femoral resection protection block of the present invention, Figure 6 The femoral resection protection block of the present invention is Figure 4 The cross-sectional view of the surface FF in FIG. Figure 7 It is a cross-sectional view of the femoral resection protection block of the present invention taken along line GG in FIG6 .

[0074] like Figure 1-7 As shown, the femoral resection protection block 100B of the present invention is provided with a connecting hole 10B, a pair of pin holes 20B and a saw groove 30B. The connecting hole 10B is arranged on the front surface of the femoral resection protection block 100B and extends to the rear surface of the femoral resection protection block 100B, and is used to be connected with the femoral osteotomy positioning guide 100A ( Figure 8-13 The femoral osteotomy positioning guide 100A is connected by inserting the guide rod 11A into the guide hole 31C of the distal alignment positioning device 100C. The saw groove 30B is provided on the upper surface of the femoral resection protection block 100B and extends along the length direction of the femoral resection protection block 100B. The pin hole pair 20B is provided behind the saw groove 30B. During surgery, the femoral resection protection block 100B is fixed to the femur by inserting the pin into the pin hole pair and driving it into the femur.

[0075] like Figure 6 As shown, in this embodiment, the connection hole 10B extends from the front surface of the femoral resection protection block 100B to the rear surface of the femoral resection protection block 100B, that is, the connection hole 10B runs through the entire femoral resection protection block 100B from front to back.

[0076] A slide groove 40B is also provided on the upper surface of the femoral resection protection block 100B. The slide groove 40B is located in the middle of the upper surface of the femoral resection protection block and extends from the front surface to the rear surface (i.e., the same direction as the connecting hole 10B) along the width direction of the femoral resection protection block 100B. A locking hole 41B is provided in the slide groove 40B to cooperate with the locking piece 230B on the femoral osteotomy positioning guide to lock the femoral osteotomy positioning guide 200B with the femoral resection protection block 100B.

[0077] like Figure 1 As shown, the pin hole pair 20B is arranged on both sides of the slide 40B and includes a plurality of pin holes 21B, and the plurality of pin holes 21B correspond to different positions on the femur. The femoral resection protection block 100B is fixed to the femur by driving the pins into the femur through the pin holes 21B. The plurality of pin holes 21B correspond to different positions on the femur, so the most suitable pin hole can be selected to drive the pins during surgery. In this embodiment, the pin hole pair 20B actually includes two groups of pin holes, and the two groups of pin holes are arranged on both sides of the slide 40B, and each group of pin hole pairs 20B includes three pin holes 21B, and the hole centers of the three pin holes 21B form the three vertices of an equilateral triangle. In this way, the shape of the femur can be matched to the greatest extent, so that at least one pin hole 21B is suitable for driving the pins.

[0078] like Figure 1 , 4 As shown in FIG. 7 , the upper surface of the femoral resection protection block 100B is provided with two protrusions 50B, which are distributed on both sides of the slide groove 40B, and the pin hole pair 20B is provided on the protrusions 50B. The upper surface of the femoral resection protection block 100B is also provided with at least two additional pin holes 60B, which are located on both sides of the slide groove 40B and on the outside of the two protrusions 50B.

[0079] The vertical distances between the at least two additional pin holes 60B and the saw groove 30B are smaller than the vertical distance between the pin hole pair 20B and the saw groove 30B.

[0080] like Figure 6 As shown, the lower surface 70B of the femoral resection protection block 100B is an arc-shaped surface to match the shape of the femur at the surgical site, so that the femoral resection protection block 100B can be fixed on the femur more snugly.

[0081] like Figure 4 , 5As shown in 7, the upper surface 80B of the femoral resection protection block 100B is also an arc-shaped surface, and the top of the arc-shaped surface 80B is located at the position of the slide groove 40B, and the saw groove 30B extends circumferentially along the arc-shaped surface 80B, so that the slide groove 40B presents a configuration with low ends and high middle. During surgery, when the scalpel is inserted from one end of the saw groove 40B into the saw groove 30B for operation, force can be applied conveniently and the bone cut can be easily slid down without blocking the operation of the scalpel.

[0082] Please refer to the attached Figure 8-13 The femoral osteotomy positioning guide 100A of the present invention is described. Figure 8 is a three-dimensional exploded view of the femoral osteotomy positioning guide of this embodiment, Fig. 9 2 is a stereoscopic view of the femoral osteotomy positioning guide of this embodiment. Figure 8 and Fig. 9 As shown, the femoral osteotomy positioning guide 100A generally comprises a guide body 10A, a sliding member 20A, a connecting member 30A and a locking member 40A. The bottom of the guide body 10A is provided with a guide rod 11A to connect with the distal alignment positioning device 100C, the sliding member 20A is slidably connected to the guide body 10A, the connecting member 30A is installed at the rear of the sliding member 20A and is used to connect the femoral resection protection block 100B, and the locking member 40A is rotatably connected to the sliding member 20A. By operating the locking member 40A to rotate relative to the sliding member 20A, the femoral osteotomy positioning guide 100A and the femoral resection protection block 100B can be locked or unlocked with each other.

[0083] Fig.10 This is a perspective exploded view of the guide body 10A of the present invention. Fig.10 The guide body 10A of the present invention is described in detail. Fig.10 As shown, the guide body 10A has a trapezoidal shape as a whole, having a relatively wide bottom end and a relatively narrow top end, and a notch 12A is provided at the bottom end, the shape of which matches the shape of the tail of the sliding member 20A, thereby accommodating the tail of the sliding member 20A, which will be further described below.

[0084] The left and right sides of the notch 12A are provided with guide rod mounting holes 13A, the top ends of the two guide rods 11A are respectively accommodated in the guide rod mounting holes 13A on both sides of the notch 12A and fixedly connected to the guide body 10A, and the guide body in front of the notch 12A is provided with a slide groove 14A extending in the front-to-back direction, and the slide groove 14A is used to cooperate with the slide rail 22A of the sliding member 20A, so that the sliding member 20A can be slidably connected to the guide body 10A. The front end of the slide groove 14A is provided with a pin hole 15A perpendicular to the bottom of the slide groove 14A, and the pin hole 15A cooperates with a stopper 151A, and the stopper 151A cooperates with the stopper groove at the bottom of the slide rail 22A of the sliding member 20A, so as to limit the displacement of the slide rail 22A sliding along the slide groove 14A, so that the slide rail 22A cannot slide forward along the slide groove 14A and exceed the front end of the guide body 10A.

[0085] The bottom of the slide 14A is also provided with four symmetrically distributed support holes 16A (only two support holes on one side are shown in the figure, and the other two support holes are blocked by the baffle above the slide and are not visible). The support hole 16A cooperates with the support pin 161A, and the support pin 161A extends from the bottom to the top into the support hole and supports the bottom of the slide rail 21A and reduces the friction between the slide rail and the slide.

[0086] Continue to refer to Fig.10 The guide body 10A is also provided with a scale 17A, which is arranged on both sides of the slide 14A. The scale 17A during the operation can indicate the angle of the guide body 17A relative to the femoral resection protection block. This facilitates the doctor to grasp the operation accuracy more intuitively during the operation. Special-shaped holes 18A are also provided on both sides of the slide 14A. The special-shaped holes 18A extend from the lower surface to the upper surface along the thickness direction of the guide body 10A. The special-shaped holes 18A are convenient for observing from above whether the guide rod 11A is aligned with the guide hole of the distal alignment positioning device during operation, thereby facilitating the insertion of the guide rod 11A into the guide hole of the distal alignment positioning device.

[0087] Fig.11 This is a front view of the sliding member, the connecting member and the locking member of the femoral osteotomy positioning guide of the present invention. Fig.12 It is a front view of the sliding member and the connecting member of the femoral osteotomy positioning guide of the present invention, Fig.13 FIG. 2 is a top view of the sliding member and the connecting member of the femoral osteotomy positioning guide of the present invention. Figure 11-13As shown, the sliding member 20A generally includes a main body 21A and a slide rail 22A integrally extending forward from the main body 21A. The main body 21A is generally in the shape of a cuboid or a cube and has an opening 23A formed at the rear. The shape of the opening 23A matches the shape of the protrusion 41A at the bottom of the locking member 40A, so that the protrusion 41A of the locking member 40A can extend into and be accommodated in the opening 22A at the rear of the sliding member 20A.

[0088] Baffles 24A are formed on both sides of the opening 23A. Pin holes 25A are provided on the baffles 24A. The pin holes 25A cooperate with the pin shaft 251A. The pin shaft 251A passes through the pin holes 25A and then passes into the rotation hole 42A of the locking member 40A, so that the locking member 40A is rotatably connected to the sliding member 20A. A spring hole 24A extending from top to bottom is provided in front of the opening 23A. The spring hole 24A cooperates with the spring 241A. The lower end of the spring 241A is installed in the spring hole 24A, and the upper end of the spring 241A abuts against the bottom of the locking member 40A. This will be described in further detail below.

[0089] The lower part of the main body 21A of the sliding member 20A is provided with a connecting member mounting hole 26A extending along the length direction of the slide rail 22A, and the connecting member mounting hole 26A is located below the slide rail 22A. The connecting member 30A is cylindrical as a whole, and includes a rear portion 31A with a relatively large diameter and a front portion 32A with a relatively small diameter, the rear portion 31A is used to penetrate into the connecting hole of the femoral resection protection block, and the front portion 32A is fixedly installed in the mounting hole 26A of the sliding member 20A. Preferably, the length of the front portion 32A is greater than the thickness of the main body 21A of the sliding member 20A, so that the front portion 32A passes through the mounting hole 26A and protrudes from the surface of the main body 21A. Correspondingly, a pin hole (not shown) that cooperates with the front part 31A of the connecting member 30A is provided in the notch 12A of the guide body 10A, and the rear part 31A of the connecting member 30A passes through the mounting hole 26A of the sliding member 20A and extends into the pin hole of the connecting member 30A, so as to position the sliding member 20A and the guide body 10A relative to each other.

[0090] In this embodiment, a fixing hole 321A is provided on the front portion 32A of the connecting member 30A along the radial direction of the connecting member, and the fixing hole cooperates with a fixing pin that fixes the spring. The fixing pin fixes the spring to the spring hole 24A of the sliding member 20A and further extends into the fixing hole 321A.

[0091] On both sides of the slide rail 22A of the slide member 20A are sliding parts 221A that cooperate with the slide groove 14A. The thickness of the sliding part 221A is thinner than the thickness of the main part of the slide rail 22A, so that it can better cooperate with the slide groove 14A. A protrusion 222A protruding upward is provided at the front end of the slide rail 22A. A limiting groove 223A extending along the length direction of the guide rail 22A is provided at the bottom of the slide rail 22A. The limiting groove 223A cooperates with the limiting member 151A on the guide body 10A. When the slide rail 22A of the slide member 21A slides along the slide groove 14A of the guide body 10A, the limiting member 151A cooperates with the limiting groove 223A to limit.

[0092] Continue to refer to Figure 11-13 The locking member 40A has a rectangular parallelepiped body 44A, and a protrusion 41A extends downward from the bottom surface of the body 43A. The shape of the protrusion 41A matches the opening 23A of the sliding member 20A so as to be accommodated in the opening 23A. The protrusion 41A is provided with a rotation hole 42A along the width direction. The rotation hole 42A is provided at the bottom of the protrusion 41A and cooperates with the pin hole 25A of the sliding member 20A to penetrate the pin shaft 251A. By installing the protrusion 41A of the locking member 40A in the opening 23A and inserting the pin shaft 251A into the pin hole 25A and the optional hole 42A, the locking member 40A and the sliding member 20A are rotatably connected to each other.

[0093] A locking portion 44A is provided at the rear of the bottom surface of the locking member body 43A. In this embodiment, the locking portion 44A is a protrusion that extends downward from the bottom surface of the locking member body 43A as a whole. The protrusion is located on the side where the connecting member 30A of the protruding portion 41A is located. The locking portion 44A cooperates with the locking groove of the femoral osteotomy protection block, so that the guide 100A and the femoral osteotomy protection block 100B can be locked with each other.

[0094] The upper surface of the locking member body 43A is provided with a plurality of grooves and protrusions arranged at intervals to increase the friction between the finger and the surface during manual operation, thereby playing an anti-slip role. The locking member body 43A is also provided with a spring fixing hole 46A, which extends from the upper surface of the locking member body 43A to the lower surface to accommodate a spring pin (not shown) for fixing the spring 241A. The spring fixing hole 46A and the locking portion 44A are respectively located at the front and rear sides of the protruding portion 41A. When unlocking is required, the front part of the locking member body 43A is pressed, and a downward force is applied to the spring 241A through the locking member body 43A to overcome the spring elastic force and cause the spring 231A to contract. The locking member 43A rotates around the pin shaft 251A with the protrusion 41A as a fulcrum, and the locking portion 44A is lifted up to exit the locking groove 41B of the femoral resection protection block 100B. Then, the entire guide 100A is pulled forward, so that the connecting column 30A exits the connecting hole 310B of the femoral osteotomy positioning protection block 100B, so as to separate the guide 100A from the femoral osteotomy resection protection block 100B.

[0095] When the guide 100A needs to be connected to the femoral resection protection block 100B, the rear portion 31A of the connector 30A is inserted into the connection hole 310B of the femoral resection protection block 100B, and then the locking member body 43A is pressed to apply pressure to the spring 241A to overcome the elastic force of the spring to force the spring 231A to contract, thereby lifting the locking portion 44A to snap into the locking groove 41B of the femoral resection protection block 100B, and the femoral resection protection block 100B and the guide 100A are connected and locked. During the operation, the distal end alignment positioning device 100C can be rotated to adjust the angle, and the scale 17A can indicate the rotation angle.

[0096] Fig.14 A front view of the distal end alignment positioning device 100C of the present invention is shown, Fig.15 FIG. 2 shows a perspective exploded view of the distal end alignment positioning device 100C of the present invention. Figure 14-15 The distal alignment positioning device 100C includes a swing table 30C, a swing positioning member 32C and a positioning rod 33C. The swing table 30C is provided with a mounting hole 301C. One end of the positioning rod 33C extends into the mounting hole 301C and can rotate in the mounting hole 301C. The swing positioning member 32C is fixedly connected to the swing table 31C and can rotate relative to the positioning rod 33C together with the swing table 31C. The interior of the positioning rod 33C is provided with a through hole 331C extending along the length direction of the positioning rod. The through hole 331C is used to insert a vertical line rod (not shown). During surgery, the vertical line rod passes through the through hole 331C and enters the femur.

[0097] The guide hole 31C extends from the upper surface of the swing table 30C to the lower surface of the swing table 30C, and the axis of the guide hole 31C is perpendicular to the axis of the mounting hole 301C. The distal end alignment positioning device 100C also includes a swing handle 34C. A handle hole 302C is provided on the side of the swing table 30C. The swing handle 34C is installed in the handle hole 302C. The swing table 30C is operated to move by the swing handle 34C.

[0098] Continue to refer to Figure 14-15 The swing positioning member 32C has a fan-shaped body, and a scale is provided on the surface of the fan-shaped body. The scale corresponds to the angle of rotation of the swing positioning member relative to the positioning rod. The scale is an angle scale, which is used to mark and adjust the angle of femoral resection. The angle scale is symmetrical, the middle scale is zero, and the left and right scales respectively mark the degree of left or right deviation of the resection angle. The doctor can find the predetermined angle to resect the distal part of the femur according to the markings on the dial.

[0099] The handle hole 302C is connected to the guide hole 31C, and the swing handle 34C can be inserted into the guide hole 31C from the handle hole 302C, so that the swing handle 34 can also fix the guide rod 21C in the guide hole 31C.

[0100] The connection mode of the spring button of the present invention is easy to operate and convenient to install and disassemble.

[0101] The distal alignment positioning device 100C of the present invention is mounted on a vertical rod (not shown) and connected to the femoral osteotomy positioning guide 100A. The entire osteotomy positioning assembly rotates to match the angle of the vertical rod, effectively ensuring that the femoral resection protection block 100B is installed in the correct position, thereby improving the efficiency of the operation.

[0102] The femoral resection protection block 100B is provided with a pair of pin holes 21B and a saw groove 30B, and the pair of pin holes 21B is used to fix the osteotomy positioning assembly on the femur. In this embodiment, the number of the pair of pin holes 21B is three groups, and each group has different sizes. Different pin hole pairs can be used to adjust the amount of femur to be cut.

[0103] The osteotomy positioning assembly of the present invention has accurate and reliable connection features and high repeated positioning accuracy, thereby ensuring that different patients can achieve consistent surgical effects by using the osteotomy positioning assembly of the present invention.

[0104] In this embodiment, the osteotomy positioning assembly of the present invention is used to optimize complex instruments to the maximum extent with the simplest mechanical principle, thus saving operation time and making positioning more reliable.

[0105] All documents mentioned in the present invention are cited as references in this application, just as each document is cited as reference individually. In addition, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A femoral osteotomy positioning assembly, characterized in that: The osteotomy positioning assembly comprises a femoral resection protection block, a femoral osteotomy positioning guide and a distal alignment positioning device, the femoral osteotomy positioning guide is provided with a guide rod and a connecting piece, the distal alignment positioning device is provided with a guide hole, the femoral resection protection block is provided with a connecting hole, the distal alignment positioning device and the femoral osteotomy positioning guide are connected to each other by extending the guide rod into the guide hole, the femoral osteotomy positioning guide and the femoral resection protection block are connected to each other by inserting the connecting piece into the connecting hole, the femoral osteotomy positioning guide is also provided with a locking piece, the femoral resection protection block is provided with a locking groove, the locking piece cooperates with the locking groove to lock the femoral osteotomy positioning guide and the femoral resection protection block to each other; The femoral resection protection block is provided with a pin hole pair and a saw groove, wherein the saw groove is arranged at the front end of the femoral resection protection block, and the pin hole pair is arranged behind the saw groove, and the osteotomy positioning assembly is fixed to the femur by driving a pin through the pin hole pair into the femur; The femoral osteotomy positioning guide comprises a guide body, the guide rod and the connecting member are arranged at the bottom of the guide body, the femoral osteotomy positioning guide further comprises a sliding member, the sliding member is slidably connected to the guide body, the connecting member is installed at the rear of the sliding member and is used to connect the femoral resection protection block, and the locking member is rotatably connected to the sliding member; The distal alignment positioning device includes a swinging table, a swinging positioning piece and a positioning rod. The swinging table is provided with a mounting hole. One end of the positioning rod extends into the mounting hole and can rotate in the mounting hole. The swinging positioning piece is fixedly connected to the swinging table and can rotate relative to the positioning rod together with the swinging table. The interior of the positioning rod is provided with a through hole extending along the length direction of the positioning rod. The through hole is used to insert a wire rod. During surgery, the wire rod passes through the through hole and enters the femur.

2. The femoral osteotomy positioning assembly according to claim 1, characterized in that: The locking groove is arranged behind the saw groove and between the pair of pin holes.

3. The femoral osteotomy positioning assembly according to claim 2, characterized in that: The upper surface of the femoral resection protection block is also provided with a slide groove, which extends backward along the width direction of the femoral resection block. A locking hole is provided in the slide groove to cooperate with the locking piece on the femoral osteotomy positioning guide to lock the femoral osteotomy positioning guide with the femoral resection protection block.

4. The femoral osteotomy positioning assembly according to claim 3, characterized in that: The pin hole pair is arranged on both sides of the slide groove and includes a plurality of pin holes, and the plurality of pin holes correspond to different positions on the femur.

5. The femoral osteotomy positioning assembly according to claim 3, characterized in that: The upper surface of the femoral resection protection block is provided with two protrusions, the two protrusions are distributed on both sides of the slide groove, and the pin hole pair is arranged on the protrusions.

6. The femoral osteotomy positioning assembly according to claim 5, characterized in that: The upper surface of the femoral resection protection block is also provided with at least two additional pin holes, and the at least two additional pin holes are distributed on both sides of the slide groove and are located outside the two protrusions.

7. The femoral osteotomy positioning assembly according to claim 6, characterized in that: The vertical distances between the at least two additional pin holes and the saw groove are smaller than the vertical distance between the pair of pin holes and the saw groove.

8. The femoral osteotomy positioning assembly according to claim 2, characterized in that: The lower surface of the femoral resection protection block is an arc-shaped surface to match the shape of the femur at the surgical site.

9. The femoral osteotomy positioning assembly according to claim 3, characterized in that: The upper surface of the femoral resection protection block is an arc-shaped surface, the top of the arc-shaped surface is located at the position where the slide groove is located, and the saw groove extends along the circumference of the arc-shaped surface.

10. The femoral osteotomy positioning assembly according to claim 3, characterized in that: The pin hole pairs include two groups of pin holes, which are arranged on both sides of the slide slot, and each group of pin hole pairs includes three pin holes, and the hole centers of the three pin holes form three vertices of an equilateral triangle.

11. The femoral osteotomy positioning assembly according to claim 2, characterized in that: The connection hole extends from the front surface of the femoral resection protection block to the rear surface of the femoral resection protection block.

12. The femoral osteotomy positioning assembly according to claim 1, characterized in that: The guide body has a relatively wide bottom end and a relatively narrow top end, the bottom end is provided with a notch, the shape of the notch matches the shape of the tail of the sliding member to accommodate the tail of the sliding member.

13. The femoral osteotomy positioning assembly according to claim 12, characterized in that: Guide rod mounting holes are arranged on the left and right sides of the notch, and the top end of the guide rod is accommodated in the guide rod mounting hole and fixedly connected to the guide body.

14. The femoral osteotomy positioning assembly according to claim 13, characterized in that: A slide groove extending in the front-to-back direction is arranged on the guide body in front of the notch, and the slide groove is used to cooperate with the slide rail of the sliding member, so that the sliding member can be slidably connected to the guide body.

15. The femoral osteotomy positioning assembly according to claim 14, characterized in that: The femoral osteotomy positioning guide also includes a limiting member, the front end of the slide groove is provided with a pin hole perpendicular to the bottom of the slide groove for installing the limiting member, the bottom of the slide rail of the sliding member is provided with a limiting groove, and the limiting member cooperates with the limiting groove.

16. The femoral osteotomy positioning assembly according to claim 14, characterized in that: The guide body is also provided with scales, and the scales are arranged on both sides of the slide groove.

17. The femoral osteotomy positioning assembly according to claim 14, characterized in that: Special-shaped holes are also provided on both sides of the slide groove, and the special-shaped holes extend from the lower surface to the upper surface along the thickness direction of the guide body.

18. The femoral osteotomy positioning assembly according to claim 14, characterized in that: The sliding member includes a main body part and a slide rail integrally extending from the main body part, wherein the main body part is formed with an opening along the opposite direction of the slide rail, and the locking member is formed with a protrusion, and the shape of the opening matches the shape of the protrusion at the bottom of the locking member so that the protrusion of the locking member can extend into and be accommodated in the opening.

19. The femoral osteotomy positioning assembly according to claim 18, characterized in that: Baffles are formed on both sides of the opening, and the baffles are provided with pin holes, which cooperate with the pin shaft. The pin shaft passes through the pin holes and then penetrates into the rotating hole of the locking member, so that the locking member is rotatably connected to the sliding member.

20. The femoral osteotomy positioning assembly according to claim 18, characterized in that: 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.

21. The femoral osteotomy positioning assembly according to claim 18, characterized in that: A connector mounting hole extending along the length direction of the slide rail is provided at the lower part of the main body of the slide member, and the connector mounting hole is located below the slide rail.

22. The femoral osteotomy positioning assembly according to claim 1, characterized in that: The connecting member includes a rear portion with a relatively large diameter and a front portion with a relatively small diameter. The rear portion penetrates into the connecting hole of the femoral resection protection block, and the front portion is fixedly installed in the installation hole of the sliding member.

23. The femoral osteotomy positioning assembly according to claim 22, characterized in that: The length of the front portion is greater than the thickness of the main body portion of the slider, so that the front portion passes through the mounting hole and protrudes from the surface of the main body portion.

24. The femoral osteotomy positioning assembly according to claim 22, characterized in that: The front part of the connecting member is provided with a fixing hole along the radial direction of the connecting member, and the fixing hole cooperates with a fixing pin of a fixing spring. The fixing pin fixes the spring into the spring hole of the sliding member and further extends into the fixing hole.

25. The femoral osteotomy positioning assembly according to claim 18, characterized in that: Sliding parts cooperating with the sliding grooves are arranged on both sides of the sliding rail of the sliding member, and the thickness of the sliding parts is thinner than that of the main body of the sliding rail.

26. The femoral osteotomy positioning assembly according to claim 25, characterized in that: The front end of the slide rail is provided with a protruding portion protruding upward.

27. The femoral osteotomy positioning assembly according to claim 25, characterized in that: The bottom of the slide rail is provided with a limiting groove extending along the length direction of the slide rail, and the limiting groove cooperates with the limiting piece on the guide body.

28. The femoral osteotomy positioning assembly according to claim 18, characterized in that: The locking member has a rectangular main body, and a protrusion extends downward from the bottom surface of the main body. The shape of the protrusion matches the opening of the sliding member so as to be accommodated in the opening.

29. The femoral osteotomy positioning assembly according to claim 28, characterized in that: The protruding portion is provided with a rotation hole along the width direction. The rotation hole is arranged at the bottom of the protruding portion and cooperates with the pin hole of the sliding member to penetrate the pin shaft, so as to rotatably connect the locking member and the sliding member to each other.

30. The femoral osteotomy positioning assembly according to claim 28, characterized in that: A locking portion is provided at the rear of the bottom surface of the main body of the locking piece, and the locking portion extends downward from the bottom surface of the main body of the locking piece as a whole. The locking portion cooperates with the locking groove of the femoral osteotomy protection block to lock the guide and the femoral osteotomy protection block together.

31. The femoral osteotomy positioning assembly according to claim 30, characterized in that: The upper surface of the main body of the locking member is provided with a plurality of grooves and protrusions arranged at intervals to increase the friction between the fingers and the surface during manual operation.

32. The femoral osteotomy positioning assembly according to claim 28, characterized in that: The main body of the locking member is also provided with a spring fixing hole, which extends from the upper surface of the locking member main body to the lower surface to accommodate a spring pin for fixing the spring.

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