CN110974345A

CN110974345A - Femoral osteotomy positioning assembly

Info

Publication number: CN110974345A
Application number: CN201910730062.0A
Authority: CN
Inventors: 王俊文
Original assignee: Beijing Jinchali Artificial Joint Technology Co ltd; Kuanyue Medical Equipment Suzhou Co ltd
Current assignee: Beijing Jinchali Artificial Joint Technology Co ltd; Kuanyue Medical Equipment Suzhou Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-10

Abstract

The invention discloses a femoral resection positioning component which comprises a femoral resection protection block, a femoral resection positioning guider and a distal end alignment positioning device. The femur osteotomy positioning guider is provided with a guide rod and a connecting column, the distal end aligning and positioning device is provided with a guide hole, the femur resection protection block is provided with a connecting hole, the distal end aligning and positioning device and the femur osteotomy positioning guider are mutually connected by stretching the guide rod into the guide hole, the femur positioning guider and the femur resection protection block are mutually connected by inserting the connecting column into the connecting hole, and the femur positioning guider is further provided with a locking part. The femur resection protection block is provided with a locking groove, and the locking part is matched with the locking groove to lock the femur resection positioning guider and the femur resection protection block mutually. The osteotomy positioning component is simple in structure, easy to operate and capable of accurately positioning.

Description

Femoral osteotomy positioning assembly

Technical Field

The invention relates to the technical field of medical instruments, in particular to a femoral osteotomy positioning assembly.

Background

In some orthopedic procedures, the distal portion of the femur needs to be cut off of bone to install the prosthesis, and the cut-off shape and prosthesis should match in position, thus requiring precise positioning using a distal osteotomy positioning device. The osteotomy positioning device in the prior art has a complex structure and great operation difficulty. Therefore, there is a great need in the art to develop a new osteotomy positioning device that is simple in structure and easy to operate, so as to improve the efficiency of the surgery.

Disclosure of Invention

The invention aims to provide an osteotomy positioning device which is simple in structure, easy to operate and accurate in positioning.

In order to achieve the above object, the present invention provides an osteotomy positioning assembly comprising a femoral resection protection block, a femoral resection positioning guide, and a distal alignment positioning device, the femur osteotomy positioning guider is provided with a guide rod and a connecting piece, the distal end aligning and positioning device is provided with a guide hole, the femur resection protection block is provided with a connecting hole, the distal end alignment positioning device and the femur osteotomy positioning guider are mutually connected by extending the guide rod into the guide hole, the femur positioning guider and the femur resection protection block are mutually connected by inserting the connecting piece into the connecting hole, the femur positioning guider is also provided with a locking part, the femur resection protecting block is provided with a locking groove, the locking piece is matched with the locking groove to lock the femoral osteotomy positioning guider and the femoral resection protection block mutually.

In one embodiment, the femoral resection protection block is provided with a pair of pin holes and a saw slot, the saw slot is arranged at the front end of the femoral resection protection block, the pair of pin holes is arranged at the rear of the saw slot and is used for fixing the osteotomy positioning component on the femur by driving a pin into the femur through the pair of pin holes.

In one embodiment, the locking slot is disposed rearward of the saw slot and between the pair of pin holes.

In one embodiment, the upper surface of the femoral resection protection block is further provided with a sliding groove, the sliding groove extends backwards along the width direction of the femoral resection protection block, and a locking hole matched with a locking piece on the femoral resection positioning guider is arranged in the sliding groove so as to lock the femoral resection positioning guider and the femoral resection protection block.

In one embodiment, the pin hole pair is disposed on both sides of the sliding groove and includes a plurality of pin holes corresponding to different positions on the femur.

In one embodiment, the upper surface of the femur resection protection block is provided with two protrusions distributed on two sides of the sliding groove, and the pin hole pair is arranged on the protrusions.

In one embodiment, the upper surface of the femur resection protection block is further provided with at least two additional pin holes which are distributed on two sides of the sliding groove and positioned on the outer sides of the two protrusions.

In one embodiment, the at least two additional pin holes are at a smaller perpendicular distance from the saw slot than the pair of pin holes.

In one embodiment, the lower surface of the femoral resection protection block is an arcuate surface to match the shape of the femur at the surgical site.

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 sliding groove, and the saw groove extends along the circumferential direction of the arc-shaped surface.

In one embodiment, the pin hole pairs include two sets of pin holes arranged on both sides of the chute, and each set of pin hole pairs includes three pin holes whose hole centers form three vertices of an equilateral triangle.

In one embodiment, the attachment aperture extends from an anterior surface of the femoral resection protection block to a posterior surface of the femoral resection protection block.

In one embodiment, the femoral resection positioning guide has a guide body with the guide rod and the connector disposed at a bottom of the guide body.

In one embodiment, the femoral resection positioning guide further comprises a slider slidably coupled to the guide body, a connector mounted to a rear portion of the slider for coupling to the femoral resection protection block, and a lock rotatably coupled to the slider.

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 receive the tail of the slider.

In one embodiment, the left side and the right side of the notch are provided with guide rod mounting holes, and the top end of the guide rod is accommodated in the guide rod mounting holes and fixedly connected with the guider main body.

In one embodiment, a sliding groove extending in the front-rear direction is provided on the guide body in front of the notch, the sliding groove being adapted to cooperate with a sliding rail of the sliding member, so that the sliding member is slidably coupled to the guide body.

In one embodiment, the femoral osteotomy positioning guide further includes a limiting member, a pin hole perpendicular to the bottom of the sliding groove and used for mounting the limiting member is disposed at the front end of the sliding groove, a limiting groove is disposed at the bottom of the sliding rail of the sliding member, and the limiting member is engaged with the limiting groove.

In one embodiment, the guider body is further provided with scales, and the scales are arranged on two sides of the sliding groove.

In one embodiment, both sides of the chute are further provided with a shaped hole extending from a lower surface to an upper surface in a thickness direction of the guide body.

In one embodiment, the sliding member includes a main body portion and a sliding rail integrally extended from the main body portion, wherein the main body portion is formed with an opening in a direction opposite to the sliding rail, and the locking member is formed with a protrusion, and the shape of the opening matches with the shape of the protrusion at the bottom of the locking member, so that the protrusion of the locking member can be inserted into and received 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 through the pin hole and then penetrates into the rotating hole of the locking member, so that the locking member is rotatably connected to the sliding member.

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

In one embodiment, the lower portion of the main body portion of the slider is provided with a connector mounting hole extending in the 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 hole of the femoral resection protection block and a relatively smaller diameter anterior portion that is fixedly mounted in the mounting hole of the slider.

Preferably, the length of the front portion is greater than the thickness of the body portion of the slider, so 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 link member is provided with a fixing hole in the radial direction of the link member, which is engaged with a fixing pin fixing the spring, the fixing pin fixing the spring into the spring hole of the slider and further extending into the fixing hole.

In one embodiment, the sliding part is provided at two sides of the sliding rail of the sliding part, and the thickness of the sliding part is thinner than that of the main body part of the sliding rail, so as to be better matched with the sliding groove.

In one embodiment, the front end of the slide rail is provided with a projection projecting upward.

In one embodiment, a limiting groove extending along the length direction of the slide rail is formed in the bottom of the slide rail, and the limiting groove is matched with the limiting piece on the guider main body.

In one embodiment, the locking member has a rectangular parallelepiped-shaped body, and a projection is integrally projected downward from a bottom surface of the body, and the projection is shaped to match the opening of the slider so as to be received in the opening.

In one embodiment, the protrusion is provided with a rotation hole in a width direction, and the rotation hole is disposed at a bottom of the protrusion and is matched with a pin hole of the sliding member to penetrate a pin shaft, so as to rotatably interconnect the locking member and the sliding member.

In one embodiment, a locking part is arranged behind 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 and is matched with a locking groove of the femoral osteotomy protection block so as to mutually lock the guider and the femoral osteotomy protection block.

In one embodiment, the upper surface of the retaining member body is provided with a plurality of spaced recesses and projections to increase the friction of the fingers against the surface during manual manipulation.

In one embodiment, the locker body is further provided with a spring fixing hole extending from an upper surface to a lower surface of the locker body to receive a spring pin fixing the spring.

It is to be understood that within the scope of the present invention, the above-described features of the present invention and those specifically described below (e.g., in the examples) may be combined with each other to form new or preferred embodiments. Not to be reiterated herein, but to the extent of space.

The main advantages of the invention include:

(a) the osteotomy positioning component has a simple structure;

(b) all parts of the osteotomy positioning assembly are fixedly connected through the spring buttons and the bolts respectively, so that the osteotomy positioning assembly is easy to operate and convenient to assemble and disassemble, and the efficiency of using instruments by doctors is greatly improved;

(c) the osteotomy positioning component is rotatably matched with the angle of the vertical line rod, so that the correct installation position of the femoral resection protection block is effectively ensured, and the operation efficiency is improved;

(d) the osteotomy positioning component has accurate and reliable connection characteristics and high repeated positioning precision, ensures different patients, and achieves consistent operation effect by using the osteotomy positioning component.

Drawings

FIG. 1 is a perspective view of a femoral resection protection block of the present invention;

FIG. 2 is a top view of the femoral resection protection block of the present invention;

FIG. 3 is a bottom view of the femoral resection protection block of the present invention;

FIG. 4 is a front view of the femoral resection protection block of the present invention;

FIG. 5 is a partial cross-sectional view of a femoral resection protection block of the present invention;

FIG. 6 is a cross-sectional view of the femoral resection protection block of the present invention taken along plane F-F of FIG. 4;

FIG. 7 is a cross-sectional view of the femoral resection protection block of the present invention taken along line G-G of FIG. 6;

FIG. 8 is an exploded perspective view of the femoral resection positioning guide of the present embodiment;

FIG. 9 is a perspective view of the femoral resection positioning guide of the present embodiment;

FIG. 10 is an exploded perspective view of the guide body of the present invention;

FIG. 11 is a front view of the slide, connector and retaining member of the femoral resection positioning guide of the present invention;

FIG. 12 is a front view of the slide and link of the femoral resection positioning guide of the present invention;

FIG. 13 is a top view of the slide and link of the femoral resection positioning guide of the present invention;

FIG. 14 shows a front view of the distal alignment positioning device of the present invention; and

fig. 15 shows an exploded perspective view of the distal alignment positioning device of the present invention.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out under conventional conditions or conditions recommended by the manufacturers. Unless otherwise indicated, percentages and parts are percentages and parts by weight.

It is to be noted that in the claims and the description of the present patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

The inventor is through extensive and intensive research, from the angle that makes things convenient for medical practitioner to use, a simple structure's osteotomy locating component has been developed for the first time, this subassembly includes thighbone resection protection piece, thighbone resection location director and distal end alignment positioner, these three parts are connected through spring buckle respectively, mode detachably fixed connection such as locating pin screw thread locking connection, it is ingenious to conveniently dismantle and cooperate, can ensure that thighbone resection protection piece mounted position is correct, and ensure the uniformity that medical practitioner used the apparatus gimmick to patient in the operation. In the osteotomy positioning assembly, the femur resection protection block is fixed in the femur to resect the unnecessary part of the femur according to a predetermined groove shape, and the femur resection positioning guide and the distal end alignment positioning device are used as a guide rotation device to match with the parallel vertical lines.

The present invention has been completed based on this finding.

Description of the terms

As used herein, the term "distal" refers to a portion of a femur that needs to be resected.

As used herein, the terms "stand wire" and "stand wire rod" are used interchangeably to refer to a linear instrument that is used externally by a surgeon. The vertical line is used to match the angle of the femur if the instrument is installed correctly.

In some surgical procedures, bone is cut off from the distal portion of the femur, and the cut-off shape is matched to the position of the plant prosthesis. Among them, the femoral resection protection block as shown in fig. 1 is the most important positioning part because it is required to cut off unnecessary parts according to a predetermined groove shape after it is fixed in the femur. And the other two assemblies are guiding rotating devices matched with the parallel vertical lines.

The sequence in the operation is that after the vertical line rod is inserted into the far-end aligning and positioning device, the femur resection protection block is connected and installed with the femur osteotomy positioning guider by adjusting the required angle, and then the vertical line rod is inserted into the far-end aligning and positioning device. The thread erecting rod is a rod-shaped object matched with the far-end aligning device, one end of the thread erecting rod can be made into a pointed end which is convenient to insert into the far-end aligning device, and threads matched with the far-end aligning device can be arranged on the thread erecting rod. The femoral resection block is then secured to the patient's femur by the locating pins so that the surgeon can find the desired angle to resect the distal portion of the femur. The angle of the vertical line rod is matched in a rotating mode, and the right installation position of the femur resection protection block is ensured through the matching connection of the spring buttons.

In the operation process, firstly, the function of cutting the bone is ensured, screw holes at different positions are arranged in the femur resection protection block, and the instrument is adjusted, meanwhile, the accurate positioning can be realized, and the stability of the femur resection amount in the operation is ensured. Alignment pin holes and saw cuts in osteotomies are essential features in the procedure. Wherein the positional accuracy of the saw grooves is high. In order to ensure the rotation fit of the vertical line angle, the alignment positioning device of the distal end of the femoral osteotomy is utilized to ensure that the vertical line rod can rotate to a certain position. Meanwhile, the matching characteristic precision is very high, and a stable and accurate connection mode can be achieved each time. In order to ensure quick and convenient connection, a positioning guider is used to ensure accurate connection and high matching precision. The design of the spring button is convenient to operate and quick and reliable to use.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-15, an exemplary resection positioning assembly of the present invention generally includes a femoral resection positioning guide 100A, a femoral resection guard 100B, and a distal alignment positioning device 100C, the femoral resection guard 100B coupled to the femoral resection positioning guide 100A. The femoral osteotomy positioning guide 100A is provided with a guide rod 11A and a connecting post 30A.

The distal alignment positioning device 100C is provided with a guide hole 31C. The femoral resection protection block 100B is provided with a coupling hole 310B, and the distal alignment positioning device 100C and the femoral resection positioning guide 100A are coupled 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 interconnected by insertion of the connection post 30A into the connection hole 310B. The femoral resection positioning guide 100A is also provided with a retaining member 40A. The femoral resection protection block 100B is provided with a locking slot 41B. The locking member 40A cooperates with the locking slot 41B to lock the femoral resection positioning guide 100A and the femoral resection block 100B to one another.

The femoral resection protection block of the present invention is described in detail below with reference to fig. 1-7. Fig. 1 is a perspective view of a femoral resection protection block of the present invention, fig. 2 is a top view of the femoral resection protection block of the present invention, fig. 3 is a bottom view of the femoral resection protection block of the present invention, fig. 4 is a front view of the femoral resection protection block of the present invention, fig. 5 is a partial cross-sectional view of the femoral resection protection block of the present invention, fig. 6 is a cross-sectional view of the femoral resection protection block of the present invention taken along plane F-F in fig. 4, and fig. 7 is a cross-sectional view of the femoral resection protection block of the present invention taken along line G-G in fig. 6.

As shown in FIGS. 1-7, the femoral resection protection block 100B of the present invention is provided with a connection hole 10B, a pin hole pair 20B, and a saw slot 30B. The attachment hole 10B is provided on the anterior surface of the femoral resection block 100B and extends toward the posterior surface of the femoral resection block 100B for attachment to the attachment post 30A of the femoral resection positioning guide 100A (shown in figures 8-13), which is attached to the femoral resection positioning guide 100A by inserting the guide rod 11A into the guide hole 31C of the distal alignment fixture 100C. The saw groove 30B is provided on the upper surface of the femoral resection protection block 100B and extends in the longitudinal direction of the femoral resection protection block 100B, the pin hole pair 20B is provided behind the saw groove 30B, and the femoral resection protection block 100B is fixed to the femur by inserting a pin into the pin hole pair and driving the pin into the femur during surgery.

As shown in fig. 6, in the present embodiment, the connection hole 10B extends from the front surface of the femoral resection protection block 100B all the way to the rear surface of the femoral resection protection block 100B, i.e., the connection hole 10B extends through the entire femoral resection protection block 100B from the front to the rear.

The upper surface of the femoral resection protection block 100B is further provided with a sliding groove 40B, the sliding 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., in the same direction as the connecting hole 10B) in the width direction of the femoral resection protection block 100B, and a locking hole 41B which is matched with the locking member 230B on the femoral resection positioning guide is provided in the sliding groove 40B to lock the femoral resection positioning guide 200B with the femoral resection protection block 100B.

As shown in fig. 1, the pin hole pair 20B is disposed on both sides of the sliding groove 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 secured to the femur by driving a pin through the pin hole 21B into the femur. The plurality of pin holes 21B correspond to different positions on the femur, so that the most suitable pin hole can be selected for driving the pin at the time of surgery. In the present embodiment, the pin hole pair 20B actually includes two sets of pin holes, the two sets of pin holes are arranged on both sides of the slide groove 40B, and each pin hole pair 20B includes three pin holes 21B, and the hole centers of the three pin holes 21B form three vertices of an equilateral triangle. This allows the shape of the femur to be matched to the maximum extent that at least one pin hole 21B is suitable for pin driving.

As shown in fig. 1, 4 and 7, the upper surface of the femur resection protection block 100B is provided with two protrusions 50B, the two protrusions 50B are distributed on both sides of the sliding slot 40B, and the pin hole pair 20B is provided on the protrusions 50B. The upper surface of the femoral resection protection block 100B is further provided with at least two additional pin holes 60B, and the at least two additional pin holes 60B are positioned on both sides of the sliding groove 40B and on the outer sides of the two protrusions 50B.

The perpendicular distance of the at least two additional pin holes 60B from the saw slot 30B is less than the perpendicular distance of the pin hole pair 20B from the saw slot 30B.

As shown in FIG. 6, the lower surface 70B of the femoral resection block 100B is curved to match the shape of the femur at the surgical site so that the femoral resection block 100B can be more snugly secured to the femur.

As shown in fig. 4, 5 and 7, the upper surface 80B of the femur resection protection block 100B is also an arc surface, the top of the arc surface 80B is located at the position of the sliding slot 40B, and the saw slot 30B extends along the circumferential direction of the arc surface 80B, so that the sliding slot 40B presents a configuration with two low ends and a high middle part, and when a scalpel is inserted into the saw slot 30B from one end of the saw slot 40B during surgery, force can be conveniently applied, bone resection can easily slide off and not block the operation of the scalpel.

The femoral resection positioning guide 100A of the present invention is described with reference to FIGS. 8-13. Fig. 8 is an exploded perspective view of the femoral resection positioning guide of the present embodiment, and fig. 9 is a perspective view of the femoral resection positioning guide of the present embodiment. As shown in fig. 8 and 9, the femoral resection positioning guide 100A generally includes a guide body 10A, a slide 20A, a connecting member 30A, and a locking member 40A. The guide body 10A is provided at the bottom thereof with a guide bar 11A to be coupled with the distal alignment positioning means 100C, the slider 20A is slidably coupled with the guide body 10A, the coupling member 30A is installed at the rear of the slider 20A and serves to couple with the femoral resection protection block 100B, and the locking member 40A is rotatably coupled with the slider 20A. The femoral resection positioning guide 100A and the femoral resection protection block 100B can be locked or unlocked with respect to each other by rotating the locking member 40A relative to the slide 20A.

Fig. 10 is an exploded perspective view of the guide body 10A of the present invention. The guide body 10A of the present invention is described in detail below with reference to fig. 10. As shown in fig. 10, the guide body 10A has a generally trapezoidal shape with a relatively wide bottom end and a relatively narrow top end, the bottom end being provided with a notch 12A, the notch 12A having a shape matching the shape of the tail of the slider 20A so as to accommodate the tail of the slider 20A, as will be further described below.

Guide rod mounting holes 13A are formed in the left side and the right side of the notch 12A, the top ends of the two guide rods 11A are respectively accommodated in the guide rod mounting holes 13A in the two sides of the notch 12A and fixedly connected with the guide main body 10A, a sliding groove 14A extending in the front-rear direction is formed in the guide main body in front of the notch 12A, and the sliding groove 14A is used for being matched with a sliding rail 22A of the sliding part 20A so that the sliding part 20A can be slidably connected to the guide main body 10A. The front end of the sliding groove 14A is provided with a pin hole 15A perpendicular to the bottom of the sliding groove 14A, the pin hole 15A is engaged with a limiting member 151A, and the limiting member 151A is engaged with a limiting groove at the bottom of the sliding rail 22A of the sliding member 20A, so as to limit the displacement of the sliding rail 22A sliding along the sliding groove 14A, and the sliding rail 22A cannot further slide forward along the sliding groove 14A and exceed the foremost end of the guide body 10A.

The bottom of the chute 14A is also provided with four support holes 16A distributed symmetrically (only two support holes on one side are shown in the figure, and the other two support holes are hidden from view by the baffle above the chute). The support hole 16A is engaged with a support pin 161A, and the support pin 161A protrudes into the support hole from the bottom to the top and supports the bottom of the slide rail 21A and reduces friction between the slide rail and the slide groove.

With continued reference to FIG. 10, the guide body 10A is further provided with graduations 17A, the graduations 17A are disposed on both sides of the slot 14A, and the graduations 17A can indicate the angle of rotation of the guide body 17A relative to the femoral resection protection block during the operation. Thereby being convenient for doctors to more intuitively master the operation precision during operation. The slide groove 14A is also provided with a shaped hole 18A on both sides thereof, and the shaped hole 18A extends from the lower surface to the upper surface in the thickness direction of the guide body 10A. The opposite-sex aperture 18A facilitates in operation to see from above whether the guide rod 11A is aligned with the guide aperture of the distal alignment fixture, thereby facilitating insertion of the guide rod 11A into the guide aperture of the distal alignment fixture.

Figure 11 is a front view of the slide, connector and locking member of the femoral resection positioning guide of the present invention, figure 12 is a front view of the slide and connector of the femoral resection positioning guide of the present invention, and figure 13 is a top view of the slide and connector of the femoral resection positioning guide of the present invention. As shown in fig. 11 to 13, the slider 20A generally includes a main body portion 21A and a slide rail 22A integrally formed extending forward from the main body portion 21A. The main body portion 21A is formed with an opening 23A in the rear portion thereof as a whole in a rectangular parallelepiped or square shape, and the shape of the opening 23A is matched with the shape of the projection 41A of the bottom portion of the locker 40A so that the projection 41A of the locker 40A can be inserted into and received in the opening 22A of the rear portion of the slider 20A.

A blocking plate 24A is formed on both sides of the opening 23A, a pin hole 25A is formed on the blocking plate 24A, the pin hole 25A is engaged with the pin shaft 251A, and the pin shaft 251A passes through the pin hole 25A and then passes through the rotating hole 42A of the locking member 40A, thereby rotatably coupling the locking member 40A to the sliding member 20A. The front of the opening 23A is provided with a spring hole 24A extending from top to bottom, the spring hole 24A is matched with the spring 241A, the lower end of the spring 241A is arranged in the spring hole 24A, and the upper end of the spring 241A abuts against the bottom of the locking piece 40A. As will be described in further detail below.

The lower portion of the main body portion 21A of the slider 20A is provided with a link mounting hole 26A extending in the longitudinal direction of the slide rail 22A, and the link mounting hole 26A is located below the slide rail 22A. The connecting member 30A is generally cylindrical and includes a relatively larger diameter posterior portion 31A for insertion into the connecting hole of the femoral resection protection block and a relatively smaller diameter anterior portion 32A, the anterior portion 32A being fixedly mounted in the mounting hole 26A of the slider 20A. Preferably, the length of the front portion 32A is greater than the thickness of the main body portion 21A of the slider 20A, so that the front portion 32A passes through the mounting hole 26A and protrudes from the surface of the main body portion 21A. Accordingly, a pin hole (not shown) is provided in the notch 12A of the guide body 10A to be engaged with the front portion 31A of the link 30A, and the rear portion 31A of the link 30A passes through the mounting hole 26A of the slider 20A and extends into the pin hole of the link 30A to function to position the slider 20A and the guide body 10A with respect to each other.

In the present embodiment, the front portion 32A of the link 30A is provided with a fixing hole 321A in the radial direction of the link, which is engaged with a fixing pin connecting the spring to be fixed, the fixing pin fixing the spring into the spring hole 24A of the slider 20A and further protruding into the fixing hole 321A.

Both sides of the slide rail 22A of the slider 20A are slide portions 221A that engage with the slide groove 14A, and the thickness of the slide portions 221A is thinner than the thickness of the main body portion of the slide rail 22A, so that they can better engage with the slide groove 14A. A projection 222A projecting upward is provided at the front end of the slide rail 22A. A stopper groove 223A extending in the longitudinal direction of the guide rail 22A is provided at the bottom of the slide rail 22A, the stopper groove 223A engages with the stopper 151A of the guide body 10A, and when the slide rail 22A of the slider 21A slides along the slide groove 14A of the guide body 10A, the stopper 151A engages with the stopper groove 223A to perform stopper.

With continued reference to fig. 11-13, the locking member 40A has a main body 44A of a rectangular parallelepiped shape, and a projection 41A projects downward integrally from the bottom surface of the main body 43A, and the projection 41A is shaped to match the opening 23A of the slider 20A so as to be received in the opening 23A. The projection 41A is provided with a rotation hole 42A in the width direction, and the rotation hole 42A is provided at the bottom of the projection 41A and cooperates with the pin hole 25A of the slider 20A to penetrate the pin shaft 251A, by mounting the projection 41A of the locker 40A in the opening 23A, and penetrating the pin shaft 251A into the pin hole 25A and the optional hole 42A, thereby rotatably interconnecting the locker 40A and the slider 20A.

A locking portion 44A is provided rearward of the bottom surface of the locker body 43A, the locking portion 44A is a projection integrally downwardly projected from the bottom surface of the locker body 43A in this embodiment, the projection is located at a side of the coupling 30A of the projection 41A, and the locking portion 44A is engaged with the locking groove of the femoral resection block, so that the guide 100A and the femoral resection block 100B can be locked to each other.

The upper surface of the locker body 43A is provided with a plurality of grooves and protrusions provided at intervals to increase the friction force between the fingers and the surface at the time of manual operation, thereby performing an anti-slip function. The locker body 43A is further provided with a spring fixing hole 46A, and the spring fixing hole 46A extends from the upper surface to the lower surface of the locker body 43A to receive a spring pin (not shown) fixing the spring 241A. The spring fixing hole 46A and the locking portion 44A are located on the front and rear sides of the projection 41A, respectively. When unlocking is required, the front part of the locking piece body 43A is pressed, the locking piece body 43A applies downward force to the spring 241A to overcome the spring force to contract the spring 231A, the locking piece 43A rotates around the pin shaft 251A by taking the protrusion 41A as a fulcrum, the locking part 44A is lifted upwards to withdraw from the locking groove 41B of the femoral resection protection block 100B, and the whole guide 100A is pulled forwards, so that the connecting column 30A is withdrawn from the connecting hole 310B of the femoral resection positioning protection block 100B to separate the guide 100A from the femoral resection protection block 100B.

When it is desired to couple the guide 100A to the femoral resection protection block 100B, the femoral resection protection block 100B is coupled and locked to the guide 100A by inserting the rear portion 31A of the coupling member 30A into the coupling hole 310B of the femoral resection protection block 100B, and then pressing the locking member body 43A to apply pressure to the spring 241A to force the spring 231A to contract against the spring force, thereby lifting the locking portion 44A to snap into the locking groove 41B of the femoral resection protection block 100B. During surgery, the distal alignment positioning device 100C may be adjusted in angle by rotating, at which time the scale 17A may indicate the angle of rotation.

Fig. 14 shows a front view of the distal alignment positioning device 100C of the present invention, and fig. 15 shows an exploded perspective view of the distal alignment positioning device 100C of the present invention. As shown in fig. 14 to 15, the distal end aligning and positioning device 100C includes a swing table 30C, a swing positioning element 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 element 32C is fixedly connected to the swing table 31C and can rotate with the swing table 31C relative to the positioning rod 33C, a through hole 331C extending along the length direction of the positioning rod is provided inside the positioning rod 33C, the through hole 331C is used for inserting a standing wire rod (not shown), and the standing wire rod passes through the through hole 331C and enters into the femur during the operation.

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 and the axis of the mounting hole 301C are perpendicular to each other. The distal alignment positioning device 100C further comprises a swing handle 34C, a handle hole 302C is formed in a side portion of the swing table 30C, and the swing handle 34C is installed in the handle hole 302C, and the swing table 30C is operated to move through the swing handle 34C.

With continued reference to fig. 14-15, the swing positioning member 32C has a fan-shaped body with a scale on the watch that corresponds to the angle of rotation of the swing positioning member relative to the positioning rod. The scale is an angle scale and is used for marking and adjusting the angle for resecting the femur, the angle scale is symmetrical left and right, the scale in the middle is zero, the left scale and the right scale respectively mark the degree of leftwards or rightwards deviation of the resecting angle, and a doctor can find out a set angle to resect the distal part of the femur according to the marking of the dial.

The handle hole 302C communicates with 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.

The spring button is easy to connect and operate, and is convenient to mount and dismount.

The distal end alignment positioning device 100C of the present invention is sleeved on a vertical rod (not shown) and connected with the femoral resection positioning guide 100A, and the whole resection positioning assembly is rotationally matched with the angle of the vertical rod, so as to effectively ensure the correct installation position of the femoral resection protection block 100B and improve the efficiency of the operation.

The femoral resection protection block 100B is provided with a pair of pin holes 21B and a saw slot 30B, the pair of pin holes 21B being used to secure the osteotomy positioning assembly to the femur. In this embodiment, the number of pin hole pairs 21B is three, each having a different size, and different amounts of the femur can be cut and adjusted using different pin hole pairs.

The osteotomy positioning component has accurate and reliable connection characteristics and high repeated positioning precision, ensures different patients, and achieves consistent operation effect by using the osteotomy positioning component.

In the embodiment, the osteotomy positioning component provided by the invention is utilized to optimize complex instruments to the maximum extent by the simplest mechanical principle, so that the operation time is saved, and the positioning is more reliable.

All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications of the present invention can be made by those skilled in the art after reading the above teachings of the present invention, and these equivalents also fall within the scope of the present invention as defined by the appended claims.

Claims

1. A femoral osteotomy positioning component is characterized in that the osteotomy positioning component comprises a femoral resection protection block, a femoral resection positioning guider and a distal end alignment positioning device, the femur osteotomy positioning guider is provided with a guide rod and a connecting piece, the distal end aligning and positioning device is provided with a guide hole, the femur resection protection block is provided with a connecting hole, the distal end alignment positioning device and the femur osteotomy positioning guider are mutually connected by extending the guide rod into the guide hole, the femur positioning guider and the femur resection protection block are mutually connected by inserting the connecting piece into the connecting hole, the femur positioning guider is also provided with a locking part, the femur resection protecting block is provided with a locking groove, the locking piece is matched with the locking groove to lock the femoral osteotomy positioning guider and the femoral resection protection block mutually.

2. The femoral resection positioning assembly of claim 1, wherein the femoral resection protection block is provided with a pair of pin holes and a saw slot, the saw slot being disposed at a front end of the femoral resection protection block, the pair of pin holes being disposed rearward of the saw slot and securing the resection positioning assembly to the femur by driving a pin through the pair of pin holes and into the femur.

3. The femoral resection positioning assembly of claim 2 wherein the locking slot is disposed posterior to the saw slot and between the pair of pin holes.

4. The femoral resection positioning assembly of claim 1 wherein the femoral resection positioning guide has a guide body with the guide rod and the connector disposed at a bottom of the guide body.

5. The femoral resection positioning assembly of claim 4 wherein the guide body has a relatively wide bottom end and a relatively narrow top end, the bottom end being provided with a notch shaped to match the shape of the tail of the slide to receive the tail of the slide.

6. The femoral resection positioning assembly of claim 5, wherein the notch is provided with guide rod mounting holes on the left and right sides, and the top end of the guide rod is accommodated in the guide rod mounting holes and fixedly connected with the guide body.

7. The femoral resection positioning assembly of claim 6 wherein the guide body anterior to the notch is provided with a sliding slot extending in an anterior-posterior direction for engaging a sliding track of the slide such that the slide is slidably coupled to the guide body.

8. The femoral resection positioning assembly of claim 7, wherein the femoral resection positioning guide further comprises a limiting member, the front end of the sliding slot is provided with a pin hole perpendicular to the bottom of the sliding slot for installing the limiting member, the bottom of the sliding rail of the sliding member is provided with a limiting groove, and the limiting member is matched with the limiting groove.

9. The femoral resection positioning assembly of claim 7 wherein the guide body further comprises graduations disposed on either side of the chute.

10. The femoral resection positioning assembly of claim 7 wherein the slider includes a body portion and a track integrally formed extending from the body portion, wherein the body portion defines an opening opposite the track, and wherein the retaining member defines a projection, the opening having a shape that matches the shape of the projection of the base of the retaining member to allow the projection of the retaining member to extend into and be received within the opening.