CN112932606B - Adjustable tibia osteotomy guider - Google Patents

Abstract

The application relates to a tibia osteotomy guide, which belongs to the technical field of orthopedic medical instruments and comprises an osteotomy guide part, a driving component for driving the osteotomy guide part to move and a retroversion adjusting component for adjusting a retroversion angle of a tibia; the osteotomy guide piece comprises an arc-shaped plate and a fixed plate, the arc-shaped plate and the fixed plate are vertically arranged, and the arc-shaped plate is fixedly connected with the fixed plate; the arc-shaped plate is provided with a transverse osteotomy guide groove extending along the length direction of the arc-shaped plate, and the transverse osteotomy guide groove penetrates through two sides of the arc-shaped plate; the fixing plate is provided with a longitudinal bone cutting guide groove which penetrates through two sides of the fixing plate. This application has when knee joint unicondylar replacement quick adjustment cuts bone position, accurate regulation hypsokinesis angle, and the doctor of being convenient for is accurate fast carries out the effect of excision to shin bone pathological change department, improves the success rate of operation, reduces patient's misery, guarantees patient's satisfaction.

Description

Adjustable tibia osteotomy guider

Technical Field

The application relates to the technical field of orthopedic medical instruments, in particular to an adjustable tibial osteotomy guider.

Background

Knee osteoarthritis is a common disease, patients with knee osteoarthritis are often accompanied with lower limb changes and varus deformity, the quality of life of people is seriously harmed, and in order to improve knee osteoarthritis, unicondylar replacement surgery is usually performed on knee joints, and proximal tibial osteotomy is the most important step of the unicondylar knee replacement surgery.

A tibia osteotomy guide is commonly used in a unicondylar knee joint replacement operation, the tibia osteotomy guide is used for determining a tibia osteotomy position and adjusting an osteotomy back inclination angle in the joint replacement operation, the existing tibia osteotomy guide is mainly used for positioning the tibia osteotomy position through an external marrow force line, medical staff determine the osteotomy position according to naked eyes, hand feeling and experience, the external marrow force line adjusting position is far away from the tibia osteotomy position, the adjusting process is unstable, the tibia osteotomy position is deviated, the osteotomy angle of the tibia osteotomy guide is fixed, and a proper osteotomy back inclination angle cannot be selected according to different patients.

Disclosure of Invention

In order to improve the unable quick adjustment of shin bone cutting director when unicondylar knee joint replacement cuts the defect of bone position, accurate regulation osteotomy hypsokinesis angle, this application provides an adjustable shin bone cutting director.

The application provides a pair of adjustable shin bone cuts bone director adopts following technical scheme:

an adjustable tibial resection guide comprises a resection guide, a driving component for driving the resection guide to move and a retroversion adjusting component for adjusting the retroversion angle of a tibia;

the osteotomy guide piece comprises an arc-shaped plate and a fixed plate, the arc-shaped plate and the fixed plate are vertically arranged, and the arc-shaped plate is fixedly connected with the fixed plate;

the arc-shaped plate is provided with a transverse osteotomy guide groove extending along the length direction of the arc-shaped plate, and the transverse osteotomy guide groove penetrates through two sides of the arc-shaped plate;

the fixing plate is provided with a longitudinal osteotomy guide groove which penetrates through two sides of the fixing plate.

By adopting the technical scheme, the transverse osteotomy guide groove is arranged at the proximal end of the unicondylar tibial osteotomy, so that compared with the proximal end of the unicondylar tibial osteotomy guide groove which is more convenient to adjust on a tibial marrow external force line, the transverse movement is accurate and flexible, the tibial osteotomy position is convenient to accurately determine, the tibial osteotomy position deviates, and the success rate of the operation is ensured;

the retroversion angle adjusting component has a retroversion adjusting function of 0-13 degrees, so that the angle of the osteotomy groove of the tibial osteotomy guider can be conveniently adjusted, medical staff can perform personalized adjustment according to different patients, different patients can select an osteotomy angle suitable for the medical staff, the success rate of the operation is improved, the pain of the patient is reduced, and the satisfaction degree of the patient on the operation is ensured;

increase the vertical cut bone groove of shin bone on cutting the bone guide, when the knee joint unicondylar shin bone was cut, the location is cut to the vertical cut bone groove of accessible preset, and medical personnel can fix a position fast when the shin bone is cut, reduces the vertical cut bone direction of shin bone and position and does not to cutting the bone many times, reduces patient's misery, practices thrift operating time, improves the success rate of operation.

Optionally, the driving assembly comprises a transverse sliding guide plate, a guide block and a fixed block, the guide block is fixedly connected to the side wall of the transverse sliding guide plate, and the fixed block is fixedly connected to the lower surface of the transverse sliding guide plate;

the arc-shaped plate is provided with a sliding groove for the guide block to move, and the sliding groove penetrates through two ends of the arc-shaped plate.

Through adopting above-mentioned technical scheme, the guide block can remove in the spout, is convenient for cut the bone guide and remove at the horizontal direction, and then makes the alignment shin bone that cuts on the bone guide that the horizontal bone guide way of cutting can be quick accurate cut the bone position, and accommodation process is simple and convenient, reduces the shin bone and cuts the phenomenon that the skew appears in the bone position, guarantees the success rate of operation.

Optionally, a sleeve is arranged on the side wall of the arc-shaped plate, a longitudinal locking bolt is installed in the sleeve, and one end of the longitudinal locking bolt extends into the sliding groove and abuts against the guide block.

Through adopting above-mentioned technical scheme, manual rotation vertical locking bolt can realize cutting the removal and the fixed of bone guide, is convenient for cut the locking and the location of bone guide, and then makes medical personnel can be fast, the accurate shin bone of aiming at need cut the bone position, and operation process is simple swift.

Optionally, the lower surface of the fixed block is fixedly connected with a limiting plate, and two ends of the limiting plate are fixedly connected with a rotating fixed shaft;

the hypsokinesis adjusting component comprises an adjusting seat, a groove for accommodating the limiting plate is formed in the adjusting seat, and a limiting groove for the rotating fixing shaft to be placed is formed in the adjusting seat.

Through adopting above-mentioned technical scheme, rotatory fixed axle rotates in the spacing inslot, realizes the hypsokinesis regulatory function of hypsokinesis regulating assembly 0-13, is convenient for adjust the osteotomy groove angle of shin bone osteotomy director, compares in the fixed osteotomy angle of traditional shin bone osteotomy director, and hypsokinesis regulating assembly can carry out individualized regulation according to the patient, satisfies different patients to the demand of osteotomy angle.

Optionally, a threaded hole is formed in the side wall of the adjusting seat, a lead screw penetrates through the threaded hole, and the lead screw is in threaded connection with the adjusting seat through the threaded hole.

Through adopting above-mentioned technical scheme, adjust hypsokinesis adjustment button for the lead screw is rotatory, promotes inside adjusting module and rotates around rotatory fixed axle, realizes cutting the regulation of bone groove angle, and then makes medical personnel can carry out the angle modulation according to different patients' shin bone specification, is applicable to different patients, guarantees the patient to the satisfaction of operation, reduces the possibility of operation failure.

Optionally, the lower surface of the adjusting seat is fixedly connected with an L-shaped fixing support, and a marrow external force line rod matching hole is formed in the center of the upper surface of the L-shaped fixing support.

Through adopting above-mentioned technical scheme, install marrow external force line pole in the marrow external force line pole mating holes, the cooperation of marrow external force line pole and marrow external force line mating holes for medical personnel can cut the bone position according to marrow external force line adjustment.

Optionally, the upper surface of the L-shaped fixing bracket is provided with a positioning hole, and a positioning pin is inserted into the positioning hole.

Through adopting above-mentioned technical scheme, installation locating pin in the locating hole, the locating pin makes fastening bolt's motion receive the restriction, realizes fastening bolt's spacing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. compared with the traditional tibia osteotomy guider which adjusts the osteotomy position by means of tibia marrow external force lines, the transverse osteotomy guiding groove is more convenient to adjust and accurate and flexible in transverse movement, so that the tibia osteotomy position is determined more quickly and accurately, the operation time is saved, and the success rate of the operation is improved;

2. the angle of the osteotomy groove can be conveniently adjusted by arranging the retroversion adjusting component, so that the osteotomy groove can meet the osteotomy requirements of different patients, medical workers can adjust the osteotomy angle according to the osteotomy requirements of different patients, the success rate of the operation is increased, the discomfort of the patient after the osteotomy caused by the improper osteotomy angle is reduced, and the satisfaction degree of the patient on the operation is ensured;

3. through the setting of vertically cutting the bone guide way, set up vertically in advance and cut the bone guide way for medical personnel can fix a position the required bone position of cutting fast, are convenient for carry out accurate location to the bone position of cutting, make the reproducibility of operation improve, increase the success rate of operation, reduce and do not cut the bone to needs many times because of cutting the bone position, practice thrift operation time.

Drawings

Fig. 1 is a schematic view of the overall construction of a tibial resection guide in an embodiment of the present application.

Fig. 2 is an exploded view of a tibial resection guide in an embodiment of the present application.

Fig. 3 is a schematic view of a highlighted chute in an embodiment of the present application.

Fig. 4 is an exploded view of an L-shaped fixing bracket in an embodiment of the present application.

Fig. 5 is a partially enlarged view of a in fig. 4.

Description of reference numerals: 1. an osteotomy guide; 11. an arc-shaped plate; 111. a transverse osteotomy guide slot; 112. a fixing hole; 113. a chute; 114. a sleeve; 115. a longitudinal locking bolt; 12. a fixing plate; 121. a longitudinal osteotomy guide slot; 2. a drive assembly; 21. a lateral sliding guide plate; 22. a guide block; 23. a fixed block; 24. a limiting plate; 25. a limiting hole; 26. rotating the fixed shaft; 3. a recline adjustment assembly; 31. an adjusting seat; 32. a groove; 33. a limiting groove; 34. a threaded hole; 35. a lead screw; 36. a backward tilting adjustment button; 4. a fixing assembly; 41. an L-shaped fixed bracket; 42. a marrow external force line rod matching hole; 43. positioning holes; 44. positioning pins; 45. bolt holes; 46. and fastening the bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses adjustable shin bone osteotomy director. Referring to fig. 1 and 2, the adjustable tibial resection guide includes aresection guide 1, adrive assembly 2, a posteriorslope adjustment assembly 3, and afixation assembly 4; cutbone guide 1 and be used for fixing a position the required department of cutting bone of knee joint unicondylar shin bone,drive assembly 2 is used for the drive to cutbone guide 1 and moves on horizontal direction and vertical direction for knee joint unicondylar shin bone replacement operation medical personnel can quick adjustment shin bone cuts the bone position, hypsokinesis adjustingpart 3 can be adjusted according to different patients' shin bone angle, realize the regulation that knee joint unicondylar shin bone cuts the back inclination, in order to adapt to the shin bone angle of cutting of different age patients, accomplish the excision that knee joint unicondylar shin bone cuts the bone, fix the instrument of cutting the bone through fixedsubassembly 4.

Referring to fig. 1 and 2,osteotomy guide 1 includescurved plate 11 and fixedplate 12 that sets up perpendicularly withcurved plate 11, and fixedplate 12 fixed connection is at the upper surface ofcurved plate 11, sets up the horizontal osteotomy guideway 111 that extends alongcurved plate 11 length direction on thecurved plate 11, and horizontal osteotomy guide way 111 runs through in the both sides setting ofcurved plate 11, and horizontal osteotomy guideway 111 is close to the setting of shin bone osteotomy near-end, is convenient for to the determination of shin bone osteotomy position.

Referring to fig. 1 and 2, a longitudinalosteotomy guide groove 121 is formed in the fixingplate 12, the longitudinalosteotomy guide groove 121 penetrates through two sides of the fixingplate 12, and the longitudinalosteotomy guide groove 121 is preset to facilitate a doctor to quickly position a longitudinal osteotomy position, so that reproducibility of an operation is improved, repeated osteotomy caused by incorrect osteotomy direction and position of the longitudinal osteotomy of a tibia is reduced, operation time is wasted, and pain of a patient is reduced.

Referring to fig. 1 and 2, a fixinghole 112 communicated with the longitudinalosteotomy guiding groove 121 is formed right below the longitudinalosteotomy guiding groove 121, and the fixinghole 112 facilitates fixing of theosteotomy guiding member 1, so that theosteotomy guiding member 1 is fixed with the tibia.

Referring to fig. 2 and 3, a slidinggroove 113 is formed in thearc plate 11 and arranged along the length direction of thearc plate 11, the end of the slidinggroove 113 is formed in the middle of thearc plate 11, the slidinggroove 113 penetrates through the two ends of thearc plate 11 and is formed, the drivingassembly 2 comprises a transverse slidingguide plate 21, aguide block 22 and a fixedblock 23, theguide block 22 is fixedly connected with the side wall of the transverse slidingguide plate 21, the fixedblock 23 is fixedly connected with the lower surface of the transverse slidingguide plate 21, theguide block 22 can move in the slidinggroove 113, so that theosteotomy guide part 1 moves in the horizontal direction, the position of the transverseosteotomy guide groove 111 can be conveniently adjusted, a doctor can quickly and accurately position the osteotomy position, and resection of a single tibial condyle lesion is completed.

Referring to fig. 2 and 3, asleeve 114 is fixedly connected to a side wall of thearc plate 11, alongitudinal locking bolt 115 is connected to thesleeve 114 in a threaded manner, one end of thelongitudinal locking bolt 115 extends into the slidinggroove 113 and abuts against theguide block 22, when the osteotomy position of the tibia in the horizontal direction needs to be adjusted, thelongitudinal locking bolt 115 is rotated, thelongitudinal locking bolt 115 moves to a side away from theguide block 22, so that the end of thelongitudinal locking bolt 115 does not abut against theguide block 22 tightly, theosteotomy guide 1 is moved, the transverseosteotomy guide groove 111 on theosteotomy guide 1 is aligned with the position of the osteotomy required by the human body, then thelongitudinal locking bolt 115 is rotated, one end of thelongitudinal locking bolt 115 abuts against theguide block 22 again, and theosteotomy guide 1 is fixed, so that a medical worker can perform osteotomy on the unicondylar tibial lesion.

Referring to fig. 1 and 2, a limitingplate 24 is fixedly connected to the lower surface of the fixingblock 23, a limitinghole 25 is formed in the middle of the limitingplate 24, and both ends of the limitingplate 24 are fixedly connected with arotating fixing shaft 26; thehypsokinesis adjusting component 3 is including adjustingseat 31, adjusts the central point ofseat 31 upper surface and puts and offer therecess 32 that holds limitingplate 24, and the spacing groove 33 that holds rotatory fixedaxle 26 is all offered to the both sides ofrecess 32, has seted up threadedhole 34 on adjustingseat 31's the lateral wall, and threadedhole 34 female connection haslead screw 35, and fixedly connected withhypsokinesis adjusting button 36 is connected to leadscrew 35's one end.

Specifically, when needs are adjusted the angle of cuttingbone guide 1 according to the hypsokinesis angle of different patients 'shin bones, presshypsokinesis adjustment button 36 forlead screw 35 removes,lead screw 35 drives driveassembly 2 back-and-forth movement, and at this moment, driveassembly 2 receives the restraint of rotatory fixedaxle 26, and then makes transverse drivingassembly 2 turn into the rotary motion around rotatory fixedaxle 26 by the horizontal migration around, realizes hypsokinesis angle adjustment's regulation, so that adapt to the shin bone angle of cutting of different human specifications.

Referring to fig. 4 and 5, the fixingassembly 4 includes an L-shapedfixing bracket 41, an external medullary force linerod matching hole 42 is formed in the upper surface of the L-shapedfixing bracket 41, and the external medullary force linerod matching hole 42 is used for the insertion of an external medullary force line rod, so that medical staff can control the external medullary force line rod conveniently to complete the guiding in the unicondylar tibia osteotomy operation.

Referring to fig. 4 and 5, apositioning hole 43 is vertically formed in the upper surface of the L-shaped fixingsupport 41, apositioning pin 44 is inserted into the positioning hole, abolt hole 45 is formed in the side wall of the L-shaped fixingsupport 41, afastening bolt 46 is connected to thebolt hole 45 in an internal thread manner, one end of thefastening bolt 46 can extend to the marrow external force linerod matching hole 42 through thebolt hole 45, the side wall of thepositioning pin 44 is abutted to the side wall of thefastening bolt 46, the locking function of thefastening bolt 46 is achieved, and the marrow external force line rod is convenient to fix.

The implementation principle of the tibial osteotomy guide of the embodiment of the application is as follows: when the tibia osteotomy guide is used, firstly, an extramedullary force line rod is installed in the extramedullary force line rod matching hole 42, the fastening bolt 46 is manually screwed, so that the extramedullary force line rod is fixed in the extramedullary force line rod matching hole 42, then the positions of the transverse osteotomy guide groove 111 and the longitudinal osteotomy guide groove 121 are adjusted according to the position of the desired osteotomy, when the position of the desired osteotomy needs to be adjusted, the longitudinal locking bolt 115 is rotated, so that the longitudinal locking bolt 115 moves to one side far away from the osteotomy guide part 1, then the driving component 2 is pushed, the guide block 22 moves in the sliding groove 113 on the osteotomy guide part 1, when the transverse osteotomy guide groove 111 is aligned with the desired osteotomy position, the longitudinal locking bolt 115 is rotated, and the longitudinal locking bolt 115 abuts against the side wall of the guide block 22, so that the accurate positioning of the transverse osteotomy guide groove 111 is realized; when the backward tilting angle needs to be adjusted, the backward tilting adjusting button 36 is pressed, the backward tilting angle is adjusted according to different human body specifications, the backward tilting angle is made to adapt to human bodies of different specifications, the adjustment of the backward tilting angle is completed, and the adjusting position is fast and accurate.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (4)

1. An adjustable shin bone cuts bone director which characterized in that: comprises an osteotomy guide (1), a driving component (2) for driving the osteotomy guide (1) to move and a retroversion adjusting component (3) for adjusting the retroversion angle of the tibia;

the osteotomy guide piece (1) comprises an arc-shaped plate (11) and a fixed plate (12), the arc-shaped plate (11) and the fixed plate (12) are vertically arranged, and the arc-shaped plate (11) is fixedly connected with the fixed plate (12);

the arc-shaped plate (11) is provided with a transverse osteotomy guide groove (111) extending along the length direction of the arc-shaped plate (11), and the transverse osteotomy guide groove (111) penetrates through two sides of the arc-shaped plate (11);

a longitudinal osteotomy guide groove (121) is formed in the fixing plate (12), and the longitudinal osteotomy guide groove (121) penetrates through two sides of the fixing plate (12);

the driving assembly (2) comprises a transverse sliding guide plate (21), a guide block (22) and a fixing block (23), the guide block (22) is fixedly connected to the side wall of the transverse sliding guide plate (21), and the fixing block (23) is fixedly connected to the lower surface of the transverse sliding guide plate (21);

the arc-shaped plate (11) is provided with a sliding chute (113) for the guide block (22) to move, and the sliding chute (113) penetrates through two ends of the arc-shaped plate (11);

the lower surface of the fixed block (23) is fixedly connected with a limiting plate (24), and two ends of the limiting plate (24) are fixedly connected with a rotary fixed shaft (26);

the backward tilting adjusting component (3) comprises an adjusting seat (31), a groove (32) for accommodating the limiting plate (24) is formed in the adjusting seat (31), and a limiting groove (33) for placing the rotating fixing shaft (26) is further formed in the adjusting seat (31);

the side wall of the adjusting seat (31) is provided with a threaded hole (34), a lead screw (35) penetrates through the threaded hole (34), and the lead screw (35) is in threaded connection with the adjusting seat (31) through the threaded hole (34).

2. The adjustable tibial resection guide of claim 1, wherein: the side wall of the arc-shaped plate (11) is provided with a sleeve (114), a longitudinal locking bolt (115) is installed in the sleeve (114), and one end of the longitudinal locking bolt (115) extends into the sliding groove (113) and is abutted to the guide block (22).

3. The adjustable tibial resection guide of claim 1, wherein: the lower surface of the adjusting seat (31) is fixedly connected with an L-shaped fixing support (41), and a marrow external force line rod matching hole (42) is formed in the center of the upper surface of the L-shaped fixing support (41).

4. The adjustable tibial resection guide of claim 3, wherein: the upper surface of the L-shaped fixing support (41) is provided with a positioning hole (43), and a positioning pin (44) is inserted into the positioning hole (43).

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