CN211066863U

CN211066863U - Swing type U-shaped ring saw

Info

Publication number: CN211066863U
Application number: CN201920434741.9U
Authority: CN
Inventors: 李志忠; 沃金; 黄石书; 孙国栋; 周霖; 焦根龙; 林永新; 李学仕
Original assignee: Jinan University
Current assignee: Jinan University
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-07-24
Anticipated expiration: 2029-04-01

Abstract

The utility model provides an oscillating U type trepan, including drill bit and swing mechanism, the one end of drill bit is the tubulose, and the tubulose tip is concave establishes into U type sawtooth structure, and the other end of drill bit is the exposed core, and swing mechanism is connected with the exposed core transmission of drill bit to drive the drill bit with the positive and negative reciprocating rotation of acute angle. The utility model discloses oscillating U type ring saw adopts drill bit and swing mechanism to cooperate, and swing mechanism drives the drill bit with the positive and negative reciprocating rotation of acute angle, and the U type cutting is realized to the U type of the U type sawtooth structure ability laminating centrum trailing edge of drill bit, so, can reduce the risk of spinal cord injury, improves the security of operation.

Description

Swing type U-shaped ring saw

Technical Field

The utility model relates to a cervical vertebra surgical instrument, in particular to an oscillating U-shaped trepan.

Background

At present, a commonly used trepan for orthopedics is a dentate flat head saw, however, the back edge of a human vertebral body is U-shaped, and if a flat head trepan is used for surgical operation to cut off the vertebral body, spinal cord and nerve tissues at the back edge of the vertebral body are easily damaged. Therefore, in order to reduce the risk of spinal cord injury, it is necessary to design a new trepan to solve the above existing problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a swing type U type trepan. The swing type U-shaped trepan can reduce the risk of spinal cord injury and improve the safety of operation.

The utility model relates to a technical solution:

the utility model provides an oscillating U type ring saw, includes drill bit and swing mechanism, and the one end of drill bit is the tubulose, and the tubulose tip is sunken to establish U type sawtooth structure, and the other end of drill bit is the exposed core, and swing mechanism is connected with the exposed core transmission of drill bit to drive the drill bit with the positive and negative reciprocating rotation of acute angle.

Further, the acute angle is 20 degrees.

Furthermore, the swing mechanism comprises a rotating shaft, a gear, a rack and a push rod motor, wherein the gear is fixedly connected to the rotating shaft, the rack is installed at the telescopic end of the push rod motor, and the rack and the gear are installed in a meshed mode.

Furthermore, the oscillating type U-shaped ring saw further comprises a shell, the oscillating mechanism further comprises two bearings, two bearing holes are formed in the shell, the two bearings are fixed in the two bearing holes respectively, and two ends of the rotating shaft are installed in the two bearings respectively.

Furthermore, one end of the rotating shaft extends out of the shell, and a clamping head is installed at the extending end of the rotating shaft.

Further, the push rod motor is fixed in the shell, a sliding groove is formed in the inner wall of the shell, and the rack is arranged in the sliding groove in a sliding mode.

Further, a switch button for controlling the push rod motor to work is arranged on the shell.

Furthermore, a bone taking window is arranged on the peripheral wall of the drill bit and close to the U-shaped sawtooth structure.

The utility model discloses oscillating U type ring saw adopts drill bit and swing mechanism to cooperate, and swing mechanism drives the drill bit with the positive and negative reciprocating rotation of acute angle, and the U type cutting is realized to the U type of the U type sawtooth structure ability laminating centrum trailing edge of drill bit, so, can reduce the risk of spinal cord injury, improves the security of operation.

Drawings

Fig. 1 is a schematic structural view of the oscillating U-shaped trepan of the present invention.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1, the present invention provides a swing type U-shaped trepan, which includes a drill bit 1 and a swing mechanism 2, wherein one end of the drill bit 1 is tubular, the tubular end is recessed to form a U-shaped saw tooth structure 11, the other end of the drill bit 1 is a clamping end, the swing mechanism 2 is in transmission connection with the clamping end of the drill bit 1 to drive the drill bit 1 to rotate forward and backward at an acute angle, preferably, the acute angle is 20 degrees.

The swing mechanism 2 comprises a rotating shaft 21, a gear 22, a rack 23 and a push rod motor 24, wherein the gear 22 is fixedly connected to the rotating shaft 21, the rack 23 is installed at the telescopic end of the push rod motor 24, and the rack 23 is installed with the gear 22 in a meshed mode. The push rod motor 24 drives the rack 23 to reciprocate linearly, and the rack 23 further drives the gear 22 to rotate in a forward and reverse reciprocating manner.

Swing type U type ring saw still includes casing 3, swing mechanism 2 still includes two bearings 25, be equipped with two dead eye in the casing 3, two bearings 25 are fixed in two dead eye respectively, the both ends of rotation axis 21 are installed respectively in two bearings 25, the one end of rotation axis 21 stretches out outside casing 3, the holding head 26 is installed to the end that stretches out of rotation axis 21 to supply the exposed end of locking drill bit 1, push rod motor 24 is fixed in casing 3, the 3 inner walls of casing are equipped with the spout, rack 23 slides and sets up in the spout.

The housing 3 is provided with a switch button 31 for controlling the operation of the pusher motor 24.

A bone taking window 12 is arranged on the outer peripheral wall of the drill bit 1 near the U-shaped sawtooth structure 11 so as to take out the vertebra contained in the drill bit 1 and ensure the integrity of the vertebra.

The utility model discloses oscillating U type ring saw adopts drill bit 1 and swing mechanism 2 to cooperate, and swing mechanism 2 drives drill bit 1 with the positive and negative reciprocating rotation of acute angle, and the U type cutting is realized to the U type of the centrum trailing edge that can laminate to the U type sawtooth structure 11 of drill bit 1, so, can reduce the risk of spinal cord injury, improves the security of operation.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification does, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. The utility model provides a swing type U type trepan which characterized in that includes drill bit (1) and swing mechanism (2), and the one end of drill bit (1) is the tubulose, and the tubulose tip is concave establishes into U type sawtooth structure (11), and the other end of drill bit (1) is the exposed core, and swing mechanism (2) are connected with the exposed core transmission of drill bit (1) to drive drill bit (1) with the positive and negative reciprocating rotation of acute angle.

2. The oscillating U-ring saw of claim 1 wherein the acute angle is 20 degrees.

3. The oscillating type U-shaped trepan according to claim 1, wherein the oscillating mechanism (2) comprises a rotating shaft (21), a gear (22), a rack (23) and a push rod motor (24), the gear (22) is fixedly connected to the rotating shaft (21), the rack (23) is installed at the telescopic end of the push rod motor (24), and the rack (23) and the gear (22) are installed in a meshed mode.

4. The oscillating type U-shaped trepan according to claim 3, further comprising a housing (3), wherein the oscillating mechanism (2) further comprises two bearings (25), two bearing holes are formed in the housing (3), the two bearings (25) are respectively fixed in the two bearing holes, and two ends of the rotating shaft (21) are respectively installed in the two bearings (25).

5. The oscillating type U-shaped trepan according to claim 4, wherein one end of the rotating shaft (21) is protruded out of the housing (3), and the protruded end of the rotating shaft (21) is mounted with a clamping head (26).

6. The oscillating type U-shaped trepan according to claim 4, characterized in that the push rod motor (24) is fixed in the housing (3), the inner wall of the housing (3) is provided with a sliding groove, and the rack (23) is arranged in the sliding groove in a sliding manner.

7. The oscillating U-ring saw according to claim 4, characterized in that the housing (3) is provided with a switch button (31) for controlling the operation of the push rod motor (24).

8. The oscillating U-ring saw of claim 1, characterized in that the outer peripheral wall of the drill bit (1) is provided with a bone access window (12) adjacent to the U-saw tooth structure (11).