CN106821452B

CN106821452B - Bone arc hole puncher

Info

Publication number: CN106821452B
Application number: CN201710097427.1A
Authority: CN
Inventors: 马立泰; 洪瑛; 刘浩; 杨毅; 戴丽娟; 宁宁
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2017-02-22
Filing date: 2017-02-22
Publication date: 2020-08-07
Anticipated expiration: 2037-02-22
Also published as: CN106821452A

Abstract

The invention relates to a bone arc hole puncher, which comprises a flexible arm and a vibration punching device, wherein the front end of the flexible arm is connected with the vibration punching device, the vibration punching device is provided with a pair of steering cables, the steering cables are positioned on the outer side of the flexible arm, the vibration punching device comprises an ultrasonic transducer and a tool head connected with the ultrasonic transducer, and the tool head is positioned at the foremost end of the vibration punching device. The invention can process a curved hole or an arc hole on the bone in a single direction through the combined action of the flexible arm and the steering cable; in addition, in the processing process, the processing track can be adjusted according to the requirement, and the flexibility is strong.

Description

Bone arc hole puncher

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bone arc-shaped hole puncher.

Background

At present, the bone holes are mainly made of straight screws, Kirschner wires, Steiner wires, straight metal rods, straight absorbable rods and the like, but arc-shaped drilling holes are needed clinically sometimes, the arc-shaped holes are suitable for arrangement of steel wires or other internal fixing systems which can be developed later, the length and holding force of the internal fixation on bones can be increased through the arc-shaped holes, and the bone ends or irregular bone structures have advantages over the straight holes. Human bones are irregular, particularly in the ends of long bones, pelvis, spine and the like, fractures or lesions of the parts need to be drilled and fixed on the bones, straight hole drilling can be difficult to a certain extent, and arc-shaped holes can be drilled at the parts which are not shielded.

Patent document CN 1122567 a discloses a device for drilling a curved hole, but the device is used for machining two holes on a bone in two directions, and then the two holes are communicated to realize the machining of the curved hole. Bidirectional punching can only be carried out according to a preset track, the flexibility is low, and the track of the holes is inconvenient to adjust according to different bone properties and different treatment requirements. And the device can only punch a bent hole and cannot punch a straight hole.

Disclosure of Invention

The invention aims to provide a bone arc hole puncher, which can realize bending holes on bones in a single direction, is convenient to adjust a processing track and has strong flexibility.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a bone arc hole puncher, includes flexible arm and vibration perforating device, flexible arm front end is connected with vibration perforating device, be equipped with a pair of steering cable on the vibration perforating device, steering cable is located the flexible arm outside, vibration perforating device includes ultrasonic transducer and the instrument head that links to each other with ultrasonic transducer, the instrument head is located vibration perforating device's foremost.

Furthermore, a channel is axially arranged in the flexible arm, a through hole is formed in the tool head, a liquid through pipe is arranged in the channel, and the front end of the liquid through pipe is communicated with the through hole.

Further, the tool head is in a shape of a circular plate. Further preferably, the front end surface of the tool head is a rough surface.

Further, the steering cables are connected to the rear end face of the tool head, and the two steering cables are located on opposite sides of the flexible arm. Further preferably, the edge of the rear end face of the tool head is rounded.

Furthermore, the vibration perforating device also comprises an ultrasonic amplitude transformer, the ultrasonic amplitude transformer is connected with an ultrasonic transducer, and the tool head is connected with the ultrasonic amplitude transformer.

Further, the bone arc hole puncher further comprises a handle, and the rear end of the flexible arm is connected with the handle.

Furthermore, two steering cables all are connected with electric putter, steering cable one end is connected with vibration perforating device, and the steering cable other end is connected with electric putter's push rod, electric putter installs in the handle, be equipped with control electric putter's switch on the handle.

Further, two turn to the cable and all be connected with winding device, winding device includes the motor and the spool of being connected with the motor, turn to cable one end and be connected with vibration perforating device, turn to the cable other end and be connected with the spool, winding device installs in the handle, be equipped with the switch of control motor on the handle.

Further, the switch includes a left turn switch and a right turn switch.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can process a curved hole or an arc hole on the bone in a single direction through the combined action of the flexible arm and the steering cable; in the processing process, the processing track can be adjusted according to the requirement, and the flexibility is strong;

2. the invention can be used for punching arc-shaped holes and straight holes; in the course of working, can realize turning to of arc hole, also can realize turning to of straight hole to satisfy the demand of punching of irregular form skeleton.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the tool head;

FIG. 3 is a schematic view of the present invention being used to create a curved hole in bone;

in the figure: 1-mattress body, 2-flexible arm, 3-vibration punching device, 4-steering cable, 5-liquid pipe, 6-through hole, 7-tool head, 8-left turn switch, 9-right turn switch, 10-bulge, 11-arc transition surface and 12-bone.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in figure 1, the bone arc hole puncher disclosed by the invention comprises a flexible arm 2 and a vibration punching device 3, wherein the front end of the flexible arm 2 is connected with the vibration punching device 3, the vibration punching device 3 is provided with a pair of steering cables 4, the steering cables 4 are positioned on the outer side of the flexible arm 2, the vibration punching device 3 comprises an ultrasonic transducer and a tool head 7 connected with the ultrasonic transducer, and the tool head 7 is positioned at the foremost end of the vibration punching device. The ultrasonic transducer is externally connected with an ultrasonic generator through a lead. Two steering cables 4 are located on opposite sides of the flexible arm 2.

Furthermore, a channel is axially arranged in the flexible arm 2, a through hole 6 is arranged in the tool head 7, a liquid through pipe 5 is arranged in the channel, and the front end of the liquid through pipe 5 is communicated with the through hole 6. Through the liquid conduit 5, a cooling or rinsing liquid can be supplied between the tool head 7 and the surface to be machined. In addition, the outer end of the liquid through pipe 5 is connected with a negative pressure device, so that bone fragments can be conveniently discharged.

Ultrasonic machining is a tool which utilizes ultrasonic frequency to vibrate in small amplitude, and can utilize a tool head to carry out hammering action on a machined surface so as to gradually crush the surface of a workpiece material; the surface of the workpiece material can be gradually crushed by the hammering effect of the grinding material which is free in the liquid between the workpiece material and the surface to be processed, and the liquid with the grinding material can be added through the liquid through pipe 5, so that the punching efficiency is improved. Of course, in order to further improve the working efficiency, an ultrasonic horn may be added to the vibration perforating device 3, the transducer generates longitudinal vibration of ultrasonic frequency, and the amplitude is amplified by the ultrasonic horn, so as to drive the tool head 7 to perform ultrasonic vibration, impact and polish the surface to be processed.

Preferably, the tool bit 7 has a disc shape. As shown in fig. 2, the front end surface of the tool head 7 is rough, which can improve the punching efficiency, and the front end surface of the tool head 7 is provided with a protrusion 10. The steering cable 4 is connected to the rear end surface of the tool head 7. Further preferably, the edge of the rear end face of the tool head 7 is rounded to form a circular arc transition surface.

When in use, the flexible arm 2 is held, the front end surface of the vibration punching device 3 is contacted with the bone surface of the bone 12, and the steering of the vibration punching device 3 is realized by pulling and releasing the steering cable 4. When a hole with a right bend needs to be punched, the right steering cable 4 is properly tensioned, and the left steering cable 4 is loosened, as shown in fig. 3.

In order to be convenient to hold, the bone arc hole puncher also comprises a handle 1, and the rear end of the flexible arm 2 is connected with the handle 1. The operator holds the handle 1 to drive the vibrating punch device 3 forward and backward.

In order to facilitate the steering of the inhaul cable 4, an operator can complete bone punching by one person, and operators are reduced. The pulling and releasing of the steering cable 4 can be controlled by a motor. There are many ways for controlling the pulling and releasing of the steering cable 4 by the motor, and the invention discloses the following two ways.

The first method comprises the following steps: two steering cables 4 all are connected with electric putter, and 4 one ends of steering cables are connected with vibration perforating device 3, and the 4 other ends of steering cables are connected with electric putter's push rod, and electric putter installs in handle 1, is equipped with control electric putter's switch on handle 1, and the switch includes left-turn switch 8 and right-turn switch 9. When a left bent hole needs to be drilled, the left-turning switch 8 is pressed, and at the moment, the push rod of the electric push rod of the left-side steering cable 4 is controlled to pull back to tighten the steering cable 4; however, the push rod of the electric push rod which controls the right steering cable 4 extends forwards, the steering cable 4 is loosened, the tool head 7 is rotated to the left, and when the rotation angle is proper, the left-turn switch 8 is closed. If it is desired to further increase the curvature of the bend, the left-turn switch 8 can be pressed again and when adjusted to the appropriate angle, the left-turn switch 8 is closed. When a right-bent hole needs to be punched, the operation method is the same as the above.

And the second method comprises the following steps: two turn to cable 4 and all be connected with winding device, winding device include the motor and with the spool that the motor is connected, turn to 4 one ends of cable and be connected with vibration perforating device 3, turn to 4 other ends of cable and be connected with the spool, winding device installs in handle 1, is equipped with the switch of control motor on handle 1, the switch includes left-handed switch 8 and right-handed switch 9. When a left bent hole needs to be drilled, the left-turning switch 8 is pressed, and at the moment, the motor of the left-side steering cable 4 is controlled to drive the winding shaft to rotate, so that the steering cable 4 is wound back; however, the motor controlling the right steering cable 4 drives the winding shaft to rotate, the steering cable 4 is released, the tool head 7 is rotated to the left, and when the rotation angle is proper, the left-turn switch 8 is closed. If it is desired to further increase the curvature of the bend, the left-turn switch 8 can be pressed again and when adjusted to the appropriate angle, the left-turn switch 8 is closed. When a right-bent hole needs to be punched, the operation method is the same as the above.

The power supply for supplying power to the motor can be a battery built in the handle 1 or an external power supply. The device can be used for drilling a bending hole and a straight hole, and only the flexible arm 2 needs to be moved and the steering inhaul cable 4 does not need to be pulled when the straight hole is drilled.

The invention can be used for drilling curved holes and straight holes, can be used for processing curved holes or arc-shaped holes on bones in a single direction under the combined action of the flexible arm and the steering inhaul cable, can adjust the processing track according to the requirements in the processing process and has strong flexibility.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.

Claims

1. The bone arc hole puncher is characterized by comprising a flexible arm (2) and a vibration punching device (3), wherein the front end of the flexible arm (2) is connected with the vibration punching device (3), a pair of steering cables (4) are arranged on the vibration punching device (3), the steering cables (4) are positioned on the outer side of the flexible arm (2), the vibration punching device (3) comprises an ultrasonic transducer and a tool head (7) connected with the ultrasonic transducer, and the tool head (7) is positioned at the foremost end of the vibration punching device;

a channel is axially arranged in the flexible arm (2), a through hole (6) is arranged in the tool head (7), a liquid through pipe (5) is arranged in the channel, and the front end of the liquid through pipe (5) is communicated with the through hole (6).

2. The bone arc hole punch of claim 1, wherein: the tool head (7) is in a disc shape.

3. The bone arc hole punch of claim 1 or 2, wherein: the front end surface of the tool head (7) is a rough surface.

4. The bone arc hole punch of claim 1 or 2, wherein: the steering cables (4) are connected with the rear end face of the tool head (7), and the two steering cables (4) are located on the opposite sides of the flexible arm (2).

5. The bone arc hole punch of claim 1, wherein: the vibration perforating device (3) further comprises an ultrasonic amplitude transformer, the ultrasonic amplitude transformer is connected with an ultrasonic transducer, and the tool head (7) is connected with the ultrasonic amplitude transformer.

6. The bone arc hole punch of claim 1, wherein: the flexible arm is characterized by further comprising a handle (1), and the rear end of the flexible arm (2) is connected with the handle (1).

7. The bone arc hole punch of claim 6, wherein: two turn to cable (4) and all be connected with electric putter, turn to cable (4) one end and be connected with vibration perforating device (3), turn to cable (4) other end and be connected with electric putter's push rod, electric putter installs in handle (1), be equipped with control electric putter's switch on handle (1).

8. The bone arc hole punch of claim 6, wherein: two turn to cable (4) and all be connected with winding device, winding device includes the motor and the spool of being connected with the motor, turn to cable (4) one end and be connected with vibration perforating device (3), turn to cable (4) other end and spool connection, winding device installs in handle (1), be equipped with the switch of control motor on handle (1).

9. The bone arc hole punch of claim 7 or 8, wherein: the switches include a left turn switch (8) and a right turn switch (9).