CN114159119A

CN114159119A - Disposable bendable electric bone drill

Info

Publication number: CN114159119A
Application number: CN202111625264.2A
Authority: CN
Inventors: 张赟轩; 葛立; 俞威
Original assignee: Shanghai Ligetai Medical Equipment Co ltd
Current assignee: Shanghai Ligetai Medical Equipment Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-03-11

Abstract

The invention discloses a disposable bendable electric bone drill, which comprises an inner cutter tube and an outer cutter tube, wherein the inner cutter tube is arranged in the outer cutter tube, one end of the flexible metal pipe is connected with a connecting part used for connecting a motor driving shaft, the other end of the flexible metal pipe is cut into a flexible metal pipe through laser, a drill bit is clamped at the end part of the flexible metal pipe, an outer cutter pipe is arranged on the periphery of an inner cutter pipe, one end of the drill bit is provided with a bending part, the end part of the bending part is provided with a cutter hole, the other end of the outer cutter pipe is provided with an outer cutter holder and an adjusting part, the adjusting part comprises a shell, an adjusting wrench and a spring, the adjusting wrench comprises a clamping block and a wrench, the spring, the outer cutter holder and the clamping block are sequentially arranged in the shell, the clamping block is matched with the outer cutter holder, when the spanner is pulled, the inner cutter tube moves relative to the outer cutter tube, and due to the arrangement of the bending part, the operation can be accurately drilled and positioned at each part of the joint without making an access incision for many times; the setting of adjustment portion has realized accomodating and the release function of drill bit, avoids the damage that the maloperation brought.

Description

Disposable bendable electric bone drill

Technical Field

The invention relates to the field of medical instruments, in particular to a disposable bendable electric bone drill.

Background

The bone drill is used for drilling through holes or positioning holes on bone tissues in a bone joint operation, the front section is a cutting edge part of a drill bit, and the tail end is a straight rod which can be directly connected to a motor.

Most of the existing bone drills are reusable straight drill bits, and the structure has the following defects:

1. the arthroscopic surgery has narrow operation range, the straight drill bit is difficult to drill and position at certain narrow or corner positions, the instrument stretching angle is often required to be changed, and the incision is made again, so that the surgery difficulty is increased, the surgery time is prolonged, and more injuries are caused to a patient.

2. The existing drill bit is integrally made of stainless steel through heat treatment, the hardness and the rigidity are high, and the risk of breakage or edge breakage exists during operation.

3. The existing drill bits are all reusable instruments, cross infection risks exist, disposable consumables are provided for sterility, and safety of products is guaranteed.

4. The existing drill bit is lack of a cutting edge protection mechanism, so that surrounding tissues are very easy to stab when the drill bit is inserted into a human body, and the human body is injured.

Disclosure of Invention

The invention aims to solve the problems and provides a disposable bendable electric bone drill which comprises an inner cutter tube and an outer cutter tube, wherein one end of the inner cutter tube is provided with a connecting part connected with a motor driving shaft, the other end of the inner cutter tube is a flexible metal tube, the end part of the flexible metal tube is clamped with a drill bit, and the tail end of the drill bit is provided with a limiting block;

the outer cutter tube is arranged on the periphery of the inner cutter tube, the outer cutter tube is arranged on the periphery of the flexible metal tube, a bending portion is arranged at the end of the bending portion and used for a cutter hole for extending a drill bit, and an adjusting portion for enabling the inner cutter tube to extend out of and retract back to the outer cutter tube is arranged on the periphery of the other end of the outer cutter tube, which deviates from the cutter hole.

Furthermore, the adjusting part comprises a shell, a spring and an adjusting wrench, the outer cutter tube is provided with an outer cutter holder inside the shell, the outer cutter holder is matched with the adjusting wrench, the outer cutter holder is arranged between the spring and the adjusting wrench, and the spring is clamped between the inner end part of the shell and the outer cutter holder.

Furthermore, the adjusting wrench is provided with a wrench and a clamping block, the wrench and the clamping block are fixedly connected, the shell is provided with a slot, the wrench extends out of the shell through the slot, the clamping block is arranged inside the shell, and the clamping block is matched with the outer cutter holder; the outer cutter holder is provided with a first clamping position and a second clamping position on the matching surface of the outer cutter holder and the clamping block.

Further, when the wrench is wrenched downwards, the fixture block pushes the outer cutter holder, the fixture block is clamped in the second clamping position, and the drill extends out of the cutter hole; when the spanner is pulled back upwards, the spanner drives the fixture block to rotate, the spring extrudes the outer cutter holder to clamp the fixture block in the second clamping position, and the drill bit retracts into the outer cutter holder.

Furthermore, another end face of the outer cutter holder departing from the clamping block extends along the periphery of the outer cutter tube in the direction of the connecting part to form a cylindrical protruding block, the cylindrical protruding block extends out of the shell, and the spring is sleeved on the periphery of the cylindrical protruding block.

Further, the periphery of interior sword pipe is still overlapped and is equipped with the magnetic induction portion, the magnetic induction portion is located between casing and the connecting portion, install magnet in the magnetic induction portion.

Further, the number of the magnets is at least 1.

Compared with the prior art, the invention has the following beneficial effects: the bone drill bent in multiple angles is provided, so that the accurate drilling and positioning of all parts of the joint can be realized without making access incisions for multiple times during the operation; according to the invention, the structure of the drill bit is redesigned, the middle part adopts a hollow metal pipe structure, and the metal pipe can be bent at multiple angles through laser cutting treatment, so that the toughness of the drill bit is greatly enhanced, and the risk of the drill bit breaking is effectively reduced; the invention is a disposable consumable provided aseptically, which can ensure the safety of products and avoid the risk of cross infection.

Drawings

FIG. 1 is an internal structure view of a disposable bendable electric bone drill according to the present invention;

FIG. 2 is a schematic view of the wrench of FIG. 1 shown pulled down;

FIG. 3 is a schematic view illustrating the positions of the outer tool holder and the clamping block when the wrench is not wrenched;

FIG. 4 is a schematic view showing the positions of the outer tool post and the fixture block after the wrench is pulled down.

In the figure, 1, connecting part; 2. an inner cutter tube; 3. a flexible metal tube; 4. a drill bit; 5. a limiting block; 6. an outer cutter tube; 7. an outer cutter holder; 8. a cylindrical bump; 9. a spring; 10. a housing; 11. a clamping block; 12. a wrench; 13. and a magnet.

Detailed Description

A more detailed description of the present invention, now directed to a disposable bendable electric bone drill, will be described in more detail, with reference to the accompanying schematic drawings, wherein there is shown preferred embodiments of the present invention, it is to be understood that modifications of the invention herein described may be made by those skilled in the art, while still achieving the advantageous results of the present invention, and therefore, the following description is to be taken as an extensive overview of the invention, and not as a limitation thereof.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

As shown in fig. 1 and 2, the disposable bendable electric bone drill comprises a connecting part 1 connected with a motor driving shaft, a magnetic induction part for identifying the installed product specification, an inner cutter tube 2 connected with the connecting part 1, an outer cutter tube 6 sleeved on the periphery of the inner cutter tube 2, and an adjusting part for adjusting the position relation between the inner cutter tube 2 and the outer cutter tube.

One end of the inner cutter tube 2 is fixedly connected with the connecting part 1, the other end of the inner cutter tube is a flexible metal tube 3 formed by laser cutting, and a drill bit 4 is arranged at the orifice of the flexible metal tube 3; outer sword pipe is for not taking the form tubular metal resonator of buckling of blade, and the mouth of pipe is equipped with the tool bore, and ordinary during out-of-operation, inside flexible tubular metal resonator 3 and drill bit 4 are accomodate in outer sword pipe 6, when needing to use, make drill bit 4 stretch out drilling through regulating part, release drill bit 4, and 4 tail ends of drill bit are equipped with

stopper

5, and 5 diameters of stopper are greater than the diameter of drilling, prevent that 4 heads of drill bit from droing.

In addition, the structure of the drill bit 4 is redesigned, the front end cutting edge of the drill bit 4 can reach extremely high hardness through heat treatment, the requirement of drilling is met, the middle part of the drill bit 4 is of a hollow metal pipe structure, the metal pipe can be bent at multiple angles through laser cutting treatment, the toughness of the drill bit 4 is greatly enhanced, and the risk of fracture of the drill bit 4 is effectively reduced. Of course, the shape of the drill 4 is not unique, and the shape of the drill 4 can be changed according to the needs, for example, the shape of the drill 4 in this embodiment is a tip drill, and if a larger hole needs to be drilled, the tip drill can be changed into a twist drill, which does not affect the use effect of the present invention. Similarly, the embodiment of the invention realizes the characteristic of bending through the laser cutting process, and the characteristic can also be realized through other schemes, such as the connection of a bending part by using a hose or a gear transmission mode.

The adjusting part is fixed on the periphery of the outer cutter tube 6, that is, the inner cutter tube 2 and the outer cutter tube 6 both pass through the adjusting part, and the adjusting part comprises a shell 10, a spring 9 and an adjusting wrench. The adjusting spanner comprises a spanner 12 and a clamping block 11 which are mutually connected and fixed, the left end of the outer cutter tube 6 penetrates through the adjusting part and is provided with an outer cutter seat 7 inside the adjusting part, the outer cutter seat 7, the spring 9 and the clamping block 11 are all arranged inside the shell 10, and the outer cutter seat 7 is arranged between the spring 9 and the clamping block 11. The outer cutter holder 7 is integrally fixed with a cylindrical projection 8 on the left end face, and the other end of the cylindrical projection 8 extends out of the shell 10 and is flush with the end part of the outer cutter tube 6. The periphery of the cylindrical bump 8 is sleeved with the spring 9, so that the spring 9 is prevented from moving too much to generate position deformation and lose the function.

Referring to fig. 3 and 4, the outer holder 7 and the locking block 11 are disposed in a matching manner, and the surface of the outer holder 7 matching with the locking block 11 is a slope surface and slopes to the bottom. The clamping block 11 is matched with the slope surface in a local arc arrangement, the slope surface is provided with a first clamping position and a second clamping position, the first clamping position and the second clamping position are concave arc pits, when the arc head of the clamping block 11 is clamped in the arc pits, the arc pits can oppositely fix the clamping block 11, correspondingly, the state of the outer cutter holder 7 is fixed, and therefore the two clamping positions are used for fixing the state after the adjustment of the adjusting part. And the wrench 12 protrudes out of the housing 10 through a slot provided in the housing 10.

When the start work, wrench 12 is pulled downwards, wrench 12 drives fixture block 11 rotatory, and because domatic, make extrusion outer blade holder 7 move left, outer blade holder 7 moves left and drives outer tool tube 6 and move left for interior tool tube 2, and extrusion spring 9, when the circular arc head of fixture block 11 rotated to the second screens, fixture block 11 blocked with outer blade holder 7 and formed fixed state, at this moment, because outer tool tube 6 moved left for interior tool tube 2, the drill bit 4 of 3 tip of flexible tubular metal 3 of interior tool tube 2 must be in order to stretch out the drilling, and the spacing block card of drill bit is in the drill hole department of interior tool tube 2, make drill bit 4 can not rock easily.

When not needing the work, wrench 12 is pulled back upwards, wrench 12 drives the fixture block 11 rotatory, the round arc head breaks away from the second screens, because domatic setting, make be formed with the space between fixture block 11 and the outer blade holder 7, the outer blade holder is under the resilience force of spring 9, the displacement right, drive outer knife pipe 6 and move right for interior knife pipe 2, when fixture block 11 rotates to the first screens of outer blade holder 7, fixture block 11 and outer blade holder 7 block and form fixed state, at this moment, because outer knife pipe 6 moves right for interior knife pipe 2, stretch out drilling 4 withdrawal drilling of drilling, prevent the maloperation, because the damage of drill bit 4 one-tenth people or property.

The planing system is further provided with a magnetic induction part, a plurality of magnet installation grooves are formed in the magnetic induction part, the planing system is provided with 4 planing systems, when the planing system is installed on a handle of the planing system, the handle can sense the number of the magnets 13, and therefore the specification of the installed planing system product is identified, the rotating speeds required by different specifications of the planing system are different, for example, one magnet 13 represents the first-gear rotating speed, two magnets 13 represent the second-gear rotating speed, and the like. Therefore, when the present invention is mounted to the handle, the handle senses the number of the magnets 13 of the magnetic induction portion, and the rotation speed is automatically adjusted. Of course, the magnetic induction function of the present invention is realized by identifying the position and the number of the magnets 13, and the scheme can be realized by identifying the magnetic induction intensity instead, without affecting the use effect of the present invention.

It is worth mentioning that the disposable consumable material is provided aseptically, can ensure the safety of products and avoid the risk of cross infection.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The disposable bendable electric bone drill is characterized by comprising an inner cutter tube and an outer cutter tube, wherein one end of the inner cutter tube is provided with a connecting part connected with a motor driving shaft, the other end of the inner cutter tube is a flexible metal tube, a drill bit is clamped at the end part of the flexible metal tube, and the tail end of the drill bit is provided with a limiting block;

2. The disposable bendable electric bone drill according to claim 1, wherein the adjusting part comprises a housing, a spring and an adjusting wrench, the outer tool tube is provided with an outer tool post inside the housing, the outer tool post is matched with the adjusting wrench, the outer tool post is arranged between the spring and the adjusting wrench, and the spring is clamped between the inner end of the housing and the outer tool post.

3. The disposable bendable electric bone drill according to claim 2, wherein the adjusting wrench is provided with a wrench and a clamping block, the wrench and the clamping block are fixedly connected, the housing is provided with a slot, the wrench extends out of the housing through the slot, the clamping block is arranged inside the housing, and the clamping block is arranged in cooperation with the outer tool holder; the outer cutter holder is provided with a first clamping position and a second clamping position on the matching surface of the outer cutter holder and the clamping block.

4. The disposable bendable electric bone drill according to claim 3, wherein when the wrench is wrenched downwards, the fixture block pushes the outer tool apron, and the fixture block is clamped in the second clamping position, and the drill bit extends out of the tool hole; when the spanner is pulled back upwards, the spanner drives the fixture block to rotate, the spring extrudes the outer cutter holder to clamp the fixture block in the second clamping position, and the drill bit retracts into the outer cutter holder.

5. The disposable bendable electric bone drill according to claim 4, wherein the other end surface of the outer cutter holder away from the fixture block extends with a cylindrical protrusion along the outer circumference of the outer cutter tube in the direction of the connection portion, the cylindrical protrusion extends out of the housing, and the spring is sleeved on the outer circumference of the cylindrical protrusion.

6. The disposable bendable electric bone drill according to claim 5, wherein the outer circumference of the inner cutter tube is further sleeved with a magnetic induction part, the magnetic induction part is arranged between the shell and the connecting part, and a magnet is installed in the magnetic induction part.

7. The disposable bendable electric bone drill according to claim 6, wherein the number of the magnets is at least 1.