CN219594728U

CN219594728U - Combined bone cutter

Info

Publication number: CN219594728U
Application number: CN202320736091.XU
Authority: CN
Inventors: 王春梅; 李树学; 潘成建
Original assignee: Hangzhou Lanshuo Medical Technology Co ltd
Current assignee: Hangzhou Lanshuo Medical Technology Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-08-29
Anticipated expiration: 2033-04-04

Abstract

The utility model belongs to the technical field of medical appliances, and discloses a combined bone cutter which is characterized by comprising a motor shell, a U-shaped track, bone cutters and gears, wherein a motor groove is formed in the motor shell, a fixed motor is fixedly arranged in the motor groove, a gear shaft is arranged on the fixed motor, one end of the gear shaft penetrates through the motor groove to be positioned outside, the gear is fixedly arranged at one end of the gear shaft positioned outside, the gears are in meshed transmission with the U-shaped track, the U-shaped groove is formed in the U-shaped track and in meshed transmission with the gears, four positioning holes are symmetrically formed in the center of the U-shaped track, and the bone cutters are rotationally arranged in the U-shaped groove. According to the utility model, through the design of the motor shell, the U-shaped track, the osteotome and the gear, the movement of the osteotome 4 is realized through the extension and contraction between the motor shell 1 and the fixed block 2, so that one-position punching can be realized, osteotome treatment can be carried out at a plurality of positions, and the pain of a patient is relieved.

Description

Combined bone cutter

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a combined osteotomy device.

Background

Bone surgery often requires osteotomies at special deep tissue sites, and osteotomies are usually performed by using osteotomies during femoral osteotomies of the knee joint. One surface of the osteotomy device is attached to the femur, and osteotomy is realized through an osteotomy groove on the osteotomy device. Knee joint replacement has been developed clinically for many years as a treatment means for treating osteoarthritis and other diseases, and has been a main treatment in the market, in which a prosthetic knee joint prosthesis is installed after a diseased portion is removed by osteotomy of a femur and a tibia of a patient. Wherein the bone cutter is used as an important surgical instrument and used as a knee joint surgical tool for cutting off redundant bone positions on the femur to match with the prosthesis;

chinese utility model patent: the utility model discloses a corner osteotome, application number CN202120251768.1, publication number CN216876492U discloses a corner osteotome, install hollow drive handle on the corner osteotome body, install the shell on the hollow drive handle, the speed adjust knob is installed to the shell bottom, and shift knob is installed to the speed adjust knob lower extreme, and the charging mouth is installed to shell bottom side, installs driving motor in the shell, and driving motor axle head connection installs the bearing, and the transmission shaft is installed in the bearing connection, and transmission gear is installed to the transmission shaft end, and pulley is installed in the transmission gear axle head connection. The utility model has the advantages that: the corner osteotome can be operated in parallel with the bone column, and can be peeled off under periosteum, so that the surgical trauma is greatly reduced, and the surgical safety is improved; periosteum is stripped, and important vascular nerves nearby are not injured; the electric osteotomy technology is adopted, so that the accuracy is improved, the operation strength of doctors is reduced, and the operation fatigue can be effectively relieved;

in the practical use process of the osteotome, the hole site for fixing the osteotome needs to be drilled at the distal end of the femur, the osteotome is provided with the nail position, the nail position is fixed after being arranged in the hole site of the distal end of the femur, the osteotome cannot move, and when osteotomy is carried out at multiple positions, holes are needed to be punched and fixed at multiple positions, the operation is affected, the pain of a patient is increased, so that the combined osteotome is designed to solve the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a combined osteotome, which can solve the problems that the prior osteotome is relatively fixed in position and needs to be perforated and fixed at a plurality of positions, and the pain of a patient is increased.

The combined osteotome is characterized by comprising a motor shell, a U-shaped track, an osteotome and a gear;

the motor shell is internally provided with a motor groove, the motor groove is internally fixedly provided with a fixed motor, the fixed motor is provided with a gear shaft, one end of the gear shaft penetrates through the motor groove and is located outside, one end of the gear shaft located outside is fixedly provided with a gear, meshing transmission is arranged on the gear, the U-shaped groove is internally provided with a U-shaped track, the U-shaped groove is in meshing transmission with the gear, four positioning holes are symmetrically formed in the U-shaped track, and a bone cutter is arranged in the U-shaped groove in a rotating mode.

Preferably, two motor shells are internally and symmetrically provided with fixing blocks, the end faces of the bottom ends of the fixing blocks are also provided with rotary tables in a rotating mode, and two bone nails are symmetrically and fixedly arranged on the rotary tables.

Preferably, the osteotome is provided with a locating rod in a sliding manner, and the locating rod is aligned with the locating hole.

Preferably, the U-shaped groove is in a rack shape and is meshed with the gear for transmission.

Preferably, three clamping blocks are symmetrically and fixedly arranged on the inner side of the U-shaped track.

Preferably, the outer end of the clamping block is coated with a silica gel layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the combined osteotome, through the design of the motor shell, the U-shaped track, the osteotome and the gear, the movement of the osteotome 4 is realized through the extension and contraction between the motor shell 1 and the fixed block 2, so that one position can be perforated, osteotome treatment can be carried out at a plurality of positions, and the pain of a patient is relieved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of a motor housing according to the present utility model;

FIG. 3 is a schematic perspective view of a U-shaped track according to the present utility model;

FIG. 4 is a cross-sectional view of the motor housing of the present utility model;

in the figure: 1. the motor comprises a motor shell, 1-1, a motor groove, 2, a fixed block, 3, a U-shaped track, 3-1, a U-shaped groove, 3-2, a positioning hole, 4, a bone cutter, 5, a turntable, 6, bone nails, 7, a clamping block, 8, a gear, 9, a gear shaft, 10, a positioning rod, 11 and a fixed motor.

Detailed Description

Referring to fig. 1-4, a combined osteotomy device is shown, which is a combined osteotomy device with movable position, without requiring multiple holes for fixation, and for alleviating pain of patients. Concretely, a combined osteotome comprises a motor shell 1, a U-shaped track 3, an osteotome 4 and a gear 8.

The motor shell 1 is internally provided with a motor groove 1-1, a fixed motor 11 is fixedly arranged in the motor groove 1-1, a gear shaft 9 is arranged on the fixed motor 11, one end of the gear shaft 9 penetrates through the motor groove 1-1 and is positioned outside, one end of the gear shaft 9 positioned outside is fixedly provided with a gear 8, the gear 8 is provided with a U-shaped track 3 in a meshed transmission manner, the U-shaped groove 3-1 is internally provided with a U-shaped groove 3-1 in a meshed transmission manner with the gear 8, the U-shaped track 3 is provided with four positioning holes 3-2 in a central symmetry manner, the U-shaped groove 3-1 is rotationally provided with a bone cutting knife 4, and the bone cutting knife 4 can be moved through the expansion and contraction between the motor shell 1 and the fixed block 2, so that one-position punching can be realized, and the bone cutting treatment can be carried out at a plurality of positions, thereby relieving the pain of patients.

Two fixing blocks 2 are symmetrically arranged in the motor shell 1, two fixing blocks 2 are fixedly arranged on the two fixing blocks 12, the rotation of the end face of the bottom end of each fixing block 2 is provided with a rotary table 5, and two bone nails 6 are symmetrically and fixedly arranged on the rotary tables 5.

The osteotome 4 is provided with a locating rod 10 in a sliding way, and the position of the locating rod 10 is aligned with the locating hole 3-2.

The U-shaped groove 3-1 is in a rack shape and is meshed with the gear 8 for transmission.

Three clamping blocks 7 are symmetrically and fixedly arranged on the inner side of the U-shaped track 3.

The outer end of the clamping block 7 is coated with a silica gel layer.

Working principle: the U-shaped track 3 is arranged at a part needing osteotomy, the angle of the osteotome 4 is adjusted through the clamping block 7, the osteotome 4 is contacted and abutted with the osteotome part, the positioning rod 10 is inserted into the positioning hole 3-2 for fixing, the fixed motor 11 is started, the fixed motor 11 drives the gear shaft 9 to rotate, the gear shaft 9 drives the gear 8 to rotate, the gear 8 drives the U-shaped track 3 to rotate, the U-shaped track 3 drives the osteotome 4 to rotate to start osteotomy, and when the osteotome 4 clamps the inner side surface of a bone column, the incision is from shallow to deep, and the exposed area of the incision is reduced;

after the periosteum within the safe visual range of the pedicle is partially stripped, the periosteum is continuously stripped around the bone column by the osteotome 4, so that the periosteum is stripped to one hundred eighty degrees, and three hundred sixty degrees of periosteum can be stripped after the operation in the opposite direction, so that the important vascular nerves nearby are not damaged, and the safety of the operation is improved.

Claims

1. The combined osteotome is characterized by comprising a motor shell (1), a U-shaped track (3), an osteotome (4) and a gear (8);

a motor groove (1-1) is formed in a motor shell (1), a fixed motor (11) is fixedly arranged in the motor groove (1-1), a gear shaft (9) is arranged on the fixed motor (11), one end of the gear shaft (9) penetrates through the motor groove (1-1) and is located outside, a gear (8) is fixedly arranged at one end of the gear shaft (9) located outside, a U-shaped track (3) is arranged on the gear (8) in a meshed transmission mode, a U-shaped groove (3-1) is formed in the U-shaped track (3), the U-shaped groove (3-1) is in meshed transmission with the gear (8), four positioning holes (3-2) are formed in the U-shaped track (3) in a central symmetry mode, and a bone cutting knife (4) is arranged in the U-shaped groove (3-1) in a rotating mode.

2. A modular osteotome according to claim 1, wherein: two fixing blocks (2) are symmetrically arranged in the motor shell (1), the bottom end face of each fixing block (2) is also provided with a rotary table (5) in a rotary mode, and two bone nails (6) are symmetrically and fixedly arranged on the rotary table (5).

3. A modular osteotome according to claim 1, wherein: a positioning rod (10) is arranged on the osteotome (4) in a sliding way, and the position of the positioning rod (10) is aligned with the positioning hole (3-2).

4. A modular osteotome according to claim 1, wherein: the U-shaped groove (3-1) is in a toothed shape and is meshed with the gear (8) for transmission.

5. A modular osteotome according to claim 1, wherein: three clamping blocks (7) are symmetrically and fixedly arranged on the inner side of the U-shaped track (3).

6. A modular osteotome according to claim 5, wherein: the outer end of the clamping block (7) is coated with a silica gel layer.