CN211985574U

CN211985574U - Tibia osteotomy positioning device for knee joint replacement operation

Info

Publication number: CN211985574U
Application number: CN202020208502.4U
Authority: CN
Inventors: 邬黎平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-11-24
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses a tibia osteotomy positioning device for knee replacement surgery, which comprises an osteotomy device, a retroversion angle regulator and a first two-toe aligner, wherein the inner side of the osteotomy device is provided with an arc-shaped contact surface, the outer side of the osteotomy device is provided with an osteotomy groove which runs through the osteotomy device, the upper end and the lower end of the osteotomy groove are respectively provided with a plurality of first positioning holes and a plurality of second positioning holes, the number of the first positioning holes is larger than that of the second positioning holes, the first positioning holes and the second positioning holes can be detachably provided with a fixer for fixing the osteotomy device on the tibia surface, when the osteotomy device is fixed on the tibia through the fixer passing through the first positioning holes and the second positioning holes, most of the fixer is nailed into the bones of the tibia spinous processes above the osteotomy groove, and the bones of the tibia spinous processes above the osteotomy groove are cut off in the surgery, thereby greatly reducing the injury of the fixer to the tibia, reduce postoperative pain and improve the postoperative recovery effect of patients.

Description

Tibia osteotomy positioning device for knee joint replacement operation

Technical Field

The utility model relates to an operation appurtenance technical field, in particular to a shin bone cuts bone positioner for knee joint replacement operation.

Background

When the cutting tool is used for cutting off the bones at the far end of the femur and the near end of the tibia in the knee joint replacement surgery, the positioning device is generally required to be positioned, so that the cutting tool can perform accurate osteotomy operation through the positioning device. When current positioner fixes on the shin bone, need fix inside the shin bone through four or more set screw nails in the osteotomy groove below, this can cause great injury to patient's shin bone itself, influences the recovery of postoperative.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a shin bone cuts bone positioner for knee joint replacement operation, it can reduce the injury to the shin bone, reduces patient's postoperative pain, improves the recovery effect of patient's postoperative.

According to the utility model discloses a shin bone cuts bone positioner for knee joint replacement operation of first aspect embodiment, include: the bone cutter comprises a bone cutter, wherein an arc-shaped contact surface is arranged on the inner side of the bone cutter, a bone cutting groove penetrating through the bone cutter is arranged on the outer side of the bone cutter, a plurality of first positioning holes and a plurality of second positioning holes are respectively arranged at the upper end and the lower end of the bone cutting groove, the number of the first positioning holes is greater than that of the second positioning holes, both the first positioning holes and the second positioning holes can be detachably provided with a fixer for fixing the bone cutter on the outer surface of a tibia, and a back-tilting angle adjuster; the first toe-toe aligner is arranged on the osteotome.

According to the utility model discloses a shin bone cuts bone positioner for knee joint replacement operation has following beneficial effect at least: this shin bone cuts bone positioner is through being equipped with a plurality of first locating holes and a plurality of second locating hole respectively at cut bone groove upper end and lower extreme, the quantity in first locating hole is greater than the quantity of second locating hole, consequently pass first locating hole and second locating hole through the fixer and will cut the bone ware when fixing on the shin bone, most fixer nail goes into the bone of cutting bone groove top shin bone spinous process part, and the bone of cutting bone groove top shin bone spinous process part will be amputated in the operation, thereby can significantly reduce the injury of fixer to shin bone itself, reduce the postoperative pain, improve the recovery effect of patient's postoperative.

According to some embodiments of the present invention, the osteotome upper end both sides are further provided with a first guard plate and a second guard plate, respectively, the first guard plate and the second guard plate by the osteotome upper end both sides extend rearwardly.

According to some embodiments of the invention, the first guard plate and the second guard plate are curved plates.

According to some embodiments of the utility model, the alignment ware between first little toe is the laser instrument, the osteotomy ware upper end is equipped with the mounting hole, the laser instrument install in the mounting hole.

According to some embodiments of the utility model, the regulating plate is equipped with the angle scale mark, the locating plate be equipped with angle scale mark complex indicating line.

According to some embodiments of the utility model, the regulating plate is equipped with the commentaries on classics hole, the locating plate be equipped with rotatable install in change downthehole pivot.

According to the utility model discloses a some embodiments, the angle scale mark is located change the hole periphery, the instruction line is located in the pivot.

According to some embodiments of the utility model, the pivot is still installed can with the locating plate lock in locking head on the regulating plate.

According to some embodiments of the present invention, the locking head is provided with anti-slip lines on its outer surface.

According to the utility model discloses a some embodiments, first locating hole is equipped with two, two first locating hole distribute in cut bone groove upper end both sides.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a tibial osteotomy positioning device for knee replacement surgery according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a tibial osteotomy positioning device for knee replacement surgery according to an embodiment of the present invention mainly includes an osteotomy 100, an angle adjuster 200, and a first ambidigital aligner 300. The inner side of the osteotomy 100 is provided with an arc-shaped contact surface 160, and the contact surface 160 is contacted with the proximal front part of the tibia, so that the contact surface 160 is set into an arc shape which can be better matched with the proximal front bony structure of the tibia, and the contact surface is more attached to the contact of the tibia. The osteotomy 100 is provided with an osteotomy slot 110 extending through the osteotomy 100 at an outer side thereof, the osteotomy slot 110 is generally horizontally disposed, and a cutter is used for cutting a bone through the osteotomy slot 110 during an operation. The upper end and the lower end of the osteotomy groove 110 are respectively provided with a plurality of first positioning holes 120 and a plurality of second positioning holes 130, the number of the first positioning holes 120 is larger than that of the second positioning holes 130, both the first positioning holes 120 and the second positioning holes 130 can be detachably provided with a fixer for fixing the osteotome 100 on the front surface of the tibia, and the fixer can be a columnar screw or other structures. The reclining angle adjuster 200 is provided with an adjusting plate 210 and a positioning plate 220, the inner side of the positioning plate 220 may be arc-shaped, the positioning plate 220 may be rotatably connected to the lower end of the adjusting plate 210, and the adjusting plate 210 may be fixedly connected to the lower end of the osteotome 100 by welding or integrally forming, etc. The posterior slope angle of the osteotome 100 can be adjusted by the posterior slope angle adjuster 200, thereby adjusting the posterior slope angle of the osteotome slot 110 such that the tibial resection surface slope angle meets the surgical requirements. The first interphalangeal aligner 300 is disposed on the osteotome 100, and the lateral position of the osteotome 100 can be positioned by aligning the first interphalangeal aligner 300 between the first and second toes.

During operation, the position of an osteotomy line on the front surface of the tibia is determined by cutting the distal end of the femur, then the osteotomy groove 110 of the osteotomy device 100 is aligned with the osteotomy line, the positioning plate 220 is aligned with the central axis of the tibia and is tightly attached to the front surface of the tibia, then the osteotomy device 100 fixedly connected with the adjusting plate 210 is inclined backwards to a proper angle through rotating the adjusting plate 210, the backward inclination angle is usually 0-7 degrees, then the osteotomy device 100 is horizontally rotated to enable the first two-toe aligner 300 to be aligned between the first and second toes, so that the osteotomy device 100 is aligned, finally the fixator penetrates through the first positioning hole 120 and the second positioning hole 130 to fix the osteotomy device 100 on the tibia, and then a cutter can extend into the osteotomy groove 110 and move along the osteotomy groove 110 to cut the bone.

This shin bone cuts bone positioner is through being equipped with a plurality of first locating holes 120 and a plurality of second locating hole 130 respectively at cut bone groove 110 upper end and lower extreme, the quantity of first locating hole 120 is greater than the quantity of second locating hole 130, consequently pass first locating hole 120 and second locating hole 130 through the fixer and fix cut bone ware 100 on the shin bone, the bone of the shin bone spinous process part of cut bone groove 110 top is nailed into to most fixers, and the bone of the shin bone spinous process part of cut bone groove 110 top will be amputated in the operation, thereby can significantly reduce the injury of fixer to shin bone itself, reduce postoperative pain, improve the recovery effect of patient's postoperative.

In some embodiments, the osteotome 100 is further provided with a first guard plate 140 and a second guard plate 150 on both sides of the upper end thereof, the first guard plate 140 and the second guard plate 150 may be fixed to both sides of the upper end of the osteotome 100 by screws or welding, and the first guard plate 140 and the second guard plate 150 extend rearward from both sides of the upper end of the osteotome 100. By arranging the first guard plate 140 and the second guard plate 150, the ligament nerve vessels on the outer surfaces of two sides of the bone can be protected, and the ligament nerve vessels can be prevented from being cut off when the bone is cut off by a cutter.

Specifically, the first guard plate 140 and the second guard plate 150 are both arc-shaped plates, so that the outer surface of the tibia of the human body can be matched better, and more ligament nerve vessels can be protected.

In some embodiments, the first interphalangeal alignment device 300 may be a laser, and may have a mounting hole in the upper end of the osteotome 100, in which the laser is mounted, and a mounting plate extending outward from the middle of the upper end of the osteotome 100, in which the mounting hole is formed. The laser instrument is small, can reduce this positioner's volume greatly, and its simple structure moreover, and the installation is all more convenient with the use, only needs open the laser instrument, and the laser ray that the laser instrument sent shines on the toe, rotates osteotomy device 100 through the level, can make laser ray remove to first, between the two toes to realize the alignment shin bone axis setting of osteotomy device. The laser can be powered by a built-in power supply, is convenient to operate, and can also be powered by an external power supply, so that the laser is convenient to disinfect before an operation.

The first interphalangeal alignment device 300 may also be of a structure, for example, including a vertical rod vertically connected to the lower end of the osteotome 100, the middle part of the vertical rod is vertically connected to a cross rod extending outward, and the rotation of the osteotome 100 can enable the horizontal projection line of the cross rod to align to the middle axis of the tibia between the first and second interphalangeal toes, thereby realizing the alignment of the osteotome 100 to the middle axis of the tibia.

In some embodiments, the adjusting plate 210 is provided with angle calibration lines, and the positioning plate 220 is provided with indication lines 223 matched with the angle calibration lines. By the above arrangement, when the caster angle is adjusted by the adjustment plate 210, the numerical value of the caster angle can be intuitively obtained through the angle scale lines and the indication lines. Rely on the mode of bore hole range estimation regulation hypsokinesis angle relatively at present, the utility model discloses an adjust more accurately to can improve the precision of cutting the bone greatly.

In some embodiments, the adjusting plate 210 has a rotating hole, the positioning plate 220 has a rotating shaft 221 rotatably installed in the rotating hole, and the positioning plate 220 is rotatably connected to the adjusting plate 210 through the rotating shaft 221.

Specifically, the angle scale lines can be arranged on the periphery of the rotating hole, and the indicating lines 223 are arranged on the rotating shaft 221, so that the numerical value of the backward tilting angle can be seen more visually.

In some embodiments, the shaft 221 further has a locking head 222 for locking the positioning plate 220 to the adjusting plate 210, and the shaft 221 can be locked by the locking head 222 to limit the rotation thereof, so as to fix the positioning plate 220.

Specifically, the locking head 222 is provided with anti-slip lines on the outer surface, so that the operation is more convenient.

In some embodiments, the number of the first positioning holes 120 is two, the two first positioning holes 120 are distributed on two sides of the upper end of the osteotomy groove 110 at intervals, and the number of the second positioning holes 130 is one, so that after the bone above the osteotomy groove 110 is resected, the osteotomy 100 can still be fixed on the tibia, the situation that the osteotomy 100 is loosened to affect the operation in the osteotomy process is avoided, meanwhile, the damage to the tibia caused by the nailing of too many fixators is reduced, meanwhile, the number of the fixators is reduced as much as possible, and the operation time is shortened.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. A tibial osteotomy positioning device for use in a knee replacement procedure, comprising:

the bone cutter is characterized in that an arc-shaped contact surface is arranged on the inner side of the bone cutter, a bone cutting groove penetrating through the bone cutter is arranged on the outer side of the bone cutter, a plurality of first positioning holes and a plurality of second positioning holes are respectively arranged at the upper end and the lower end of the bone cutting groove, the number of the first positioning holes is larger than that of the second positioning holes, and both the first positioning holes and the second positioning holes can be detachably provided with a fixer for fixing the bone cutter on the outer surface of a tibia;

the bone osteotome comprises a bone osteotome body, a back-tilting angle adjuster and a back-tilting angle adjusting mechanism, wherein the back-tilting angle adjuster is provided with an adjusting plate and a positioning plate, the positioning plate is rotatably connected to the lower end of the adjusting plate, and the adjusting plate is fixedly connected to the lower end of the bone osteotome;

the first toe-toe aligner is arranged on the osteotome.

2. The tibial osteotomy positioning device for a knee replacement procedure of claim 1, wherein: the bone cutter is characterized in that a first protection plate and a second protection plate are further arranged on two sides of the upper end of the bone cutter respectively, and the first protection plate and the second protection plate extend backwards from two sides of the upper end of the bone cutter.

3. The tibial osteotomy positioning device for a knee replacement procedure of claim 2, wherein: the first guard plate and the second guard plate are both arc-shaped plates.

4. The tibial osteotomy positioning device for a knee replacement procedure of claim 1, wherein: the first interphalangeal alignment device is a laser, a mounting hole is formed in the upper end of the osteotome, and the laser is mounted in the mounting hole.

5. The tibial osteotomy positioning device for a knee replacement procedure of claim 1, wherein: the regulating plate is provided with angle scale marks, and the locating plate is provided with an indicating line matched with the angle scale marks.

6. The tibial osteotomy positioning device for a knee replacement procedure of claim 5, wherein: the adjusting plate is provided with a rotating hole, and the positioning plate is provided with a rotating shaft which is rotatably arranged in the rotating hole.

7. The tibial osteotomy positioning device for a knee replacement procedure of claim 6, wherein: the angle scale lines are arranged on the periphery of the rotary hole, and the indicating lines are arranged on the rotary shaft.

8. The tibial osteotomy positioning device for a knee replacement procedure of claim 6, wherein: the rotating shaft is also provided with a locking head which can lock the positioning plate on the adjusting plate.

9. The tibial osteotomy positioning device for a knee replacement procedure of claim 8, wherein: the locking head surface is equipped with anti-skidding line.

10. The tibial osteotomy positioning device for a knee replacement procedure of any one of claims 1 to 9, wherein: the first locating holes are two in number and are distributed on two sides of the upper end of the osteotomy groove.