CN212679210U - Kirschner wire clamping mechanism and hollow drill handle - Google Patents

Abstract

The utility model discloses a kirschner wire clamping mechanism and be provided with this kirschner wire clamping mechanism's core drill handle, this kirschner wire clamping mechanism compress tightly the piece and set up the elastic component on the core section of thick bamboo including seting up the through-hole on the core section of thick bamboo wall of core drill handle, being located this through-hole, and this elastic component is located the through-hole or keeps off outside the through-hole, works as when the kirschner wire is packed into in the core section of thick bamboo, the activity compresses tightly the piece extrusion the elastic component makes the elastic component produces after elastic deformation and makes the activity compress tightly the elastic force that the piece compressed tightly the kirschner wire. The utility model discloses a ke shi needle clamping mechanism and core drill handle can make the ke shi needle in the core section of thick bamboo by the centre gripping all the time under the elastic force effect, is favorable to avoiding the ke shi needle to drop at operation in-process or transmission in-process, has improved the security and the reliability of core drill handle.

Description

Kirschner wire clamping mechanism and hollow drill handle

Technical Field

The utility model relates to a medical instrument, concretely relates to kirschner wire clamping mechanism and core drill handle of core drill.

Background

In the prior art, the hollow drill handle utilizes the elastic chuck to clamp the kirschner wire, the elastic chuck is arranged at the front end of a core barrel of the hollow drill handle, a pushing structure used for pushing the chuck is arranged in the hollow drill handle, the pushing structure comprises a pressing part arranged on the periphery of the handle, the pushing structure pushes the chuck by pressing the pressing part, and the chuck clamps the kirschner wire in the core barrel after being deformed. However, if the pressing portion is not pressed all the time during the operation or the transfer, the collet will loosen the k-wire, and the k-wire may be dropped.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art not enough, the utility model aims to provide a kirschner wire clamping mechanism and hole drill handle to avoid the kirschner wire to drop, improve the security and the reliability of core drill handle.

In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:

a k-wire clamping mechanism comprising:

the through hole is formed in the wall of the core barrel of the hollow drill handle;

the movable pressing piece is positioned in the through hole; and

the elastic piece, the elastic piece sets up on a core section of thick bamboo, the elastic piece is located in the through-hole or the elastic piece keeps off outside the through-hole, works as when the kirschner wire is packed into in the core section of thick bamboo, the activity compresses tightly the piece, and the activity compresses tightly the piece extrusion the elastic piece, makes the elastic piece takes place to produce after elastic deformation and makes the activity compress tightly the elastic force that the piece compressed tightly the kirschner wire.

Optionally, the movable pressing piece is a steel ball;

or

The movable pressing piece is a sliding block, and a guide surface facing the insertion direction of the Kirschner wire is arranged on the sliding block.

Optionally, the elastic member is an elastic sleeve, and the elastic sleeve is sleeved on the core barrel and is blocked outside the through hole.

Optionally, a limiting structure for limiting the axial position of the elastic sleeve is arranged on the core barrel.

Optionally, a limiting ring groove is formed in the core barrel, and the elastic sleeve is embedded in the limiting ring groove;

or

The elastic sleeve is mounted on the core barrel through a fastener.

Optionally, the elastic member is elastic rubber or a spring, and the elastic member is filled in the through hole.

Optionally, the number of the through holes is one or more, when the number of the through holes is multiple, the movable pressing member is configured in each through hole, and each through hole is arranged along the circumferential direction of the core barrel.

Optionally, the number of the through holes is 3.

A hollow drill handle comprising:

the core barrel is provided with any one of the Kirschner wire clamping mechanisms;

the chuck is arranged at the front end of the core barrel; and

and the chuck control mechanism is used for controlling the chuck to clamp or release the Kirschner wire.

The utility model discloses a ke shi needle clamping mechanism and core drill handle can make the ke shi needle in the core section of thick bamboo by the centre gripping all the time under the elastic force effect, is favorable to avoiding the ke shi needle to drop at operation in-process or transmission in-process, has improved the security and the reliability of core drill handle.

Drawings

FIG. 1 is a schematic view of the structure of a hollow drill handle according to the present invention;

FIG. 2 is a schematic view showing the structure of a cartridge;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural view of the kirschner wire clamping mechanism of the present invention clamping a type of kirschner wire;

fig. 5 is a schematic structural view of the kirschner wire clamping mechanism of the present invention clamping another type of kirschner wire;

part number description:

the device comprises an elastic part 1, a movable pressing part 2, a core barrel 3, a Kirschner wire 4, a chuck 31, a through hole 32 and a limiting ring groove 33.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

With reference to fig. 1 to 5, the utility model discloses a kirschner wire clamping mechanism, including seting up through-hole 32 on the 3 section of thick bamboo walls of core barrel of hollow drill handle, be located the activity of this through-hole 32 and compress tightly 2 and set up the elastic component 1 on a core barrel 3, this elastic component 1 is located through-hole 32 or keeps off outside through-hole 32, works as when the kirschner wire 4 is packed into in a core barrel 3, the activity is compressed tightly 5, and the activity is compressed tightly 5 extrusion elastic component 1 makes elastic component 1 takes place to produce after elastic deformation and makes the activity compress tightly 5 elastic force that compress tightly kirschner wire 4.

In particular, when the core barrel 3 is thin enough to accommodate the elastic member 1, the elastic member 1 is blocked outside the through hole 32, which is suitable for a small-sized hollow drill handle; when the wall thickness of the cartridge 3 is thick, the elastic member 1 can be inserted into the through hole 32.

When using the hollow drill handle, no matter whether chuck 31 of hollow drill handle presss from both sides tight kirschner wire 4, as long as there is kirschner wire 4 in the core barrel 3, elastic component 1 can produce the elastic force that extrudes movable pressing component 2 passively under the extrusion of kirschner wire 4, make movable pressing component 2 compress tightly kirschner wire 4 in core barrel 3, make kirschner wire 4 be by the centre gripping all the time, if will take out kirschner wire 4, need overcome this elastic force, kirschner wire 4 is difficult for dropping at operation in-process or transmission in-process, the security and the reliability of hollow drill handle have been improved.

This type of k-wire clamping mechanism is suitable for clamping k-wires of different diameters, for example, in fig. 4, the diameters of the k-wire and the movable pressing member are both 2mm, while in fig. 5, the diameter of the movable pressing member is still 2mm, but the diameter of the k-wire is only 0.6 mm.

In some embodiments, the movable pressing member 2 is a steel ball, and the size of the steel ball is selected according to the diameter of the through hole 32, however, in practical implementation, the movable pressing member 2 may also be a slider or a pin, and the slider or the pin is cooperatively disposed in the through hole 32, but a guide surface is required to be disposed on the slider, and the guide surface faces the insertion direction of the k-wire 4, so that the k-wire 4 can be smoothly inserted into the core barrel 3.

In some embodiments, the elastic element 1 is an elastic sleeve, which is sleeved on the core barrel 3 and is blocked outside the through hole 32. In practical implementation, the elastic member 1 may be made of an elastic material such as silicone rubber.

When the kirschner wire 4 is inserted, the kirschner wire 4 firstly extrudes the movable pressing piece 2, the movable pressing piece 2 moves in the through hole 32 and extrudes the elastic sleeve, the elastic sleeve deforms and generates an elastic force which drives the movable pressing piece 2 to press the kirschner wire 4, and the elastic force always exists in the using or transferring process, so that the kirschner wire 4 cannot fall off; when the Kirschner wire 4 is withdrawn, the elastic member 1 releases the elastic force, and the movable pressing member 2 moves toward the center of the core barrel 3.

In some embodiments, the core barrel 3 is provided with a limiting structure for limiting the axial position of the elastic sleeve, so that the elastic sleeve is always kept out of the through hole 32, on one hand, the movable pressing piece 2 can be reliably limited and prevented from coming out of the through hole 32 from the through hole 32, and on the other hand, the elastic force for pressing the kirschner wire 4 can be reliably provided.

Specifically, in some embodiments, the core barrel 3 is provided with a limiting ring groove 33, the elastic sleeve is embedded in the limiting ring groove 33, and the elastic sleeve can be installed in the limiting ring groove 33 without providing other installation structures due to the elasticity of the elastic sleeve, so that the axial positioning is realized. Of course, in practical implementation, the elastic sleeve can be mounted on the core barrel 3 through a fastener to realize axial positioning.

In other embodiments, the elastic member is an elastic rubber (e.g., silicone rubber), and the elastic member is filled in the through hole 32 (not shown). At this time, the elastic member may be adhered to the through hole 32 by an adhesive, or a positioning sleeve may be set outside the through hole 32 to prevent the elastic adhesive from being extruded out of the through hole 32.

In some embodiments, the through hole 32 is plural, the movable pressing member 2 is disposed in each through hole 32, and the through holes 32 are arranged along the circumferential direction of the core barrel 3. After the kirschner wire 4 is drawn out from the core cylinder 3, each movable pressing part 2 moves towards the central line direction of the core cylinder 3 under the utilization of the elastic parts 1, and the elastic parts 1 are mutually contacted and supported, so that each movable pressing part 2 can be prevented from being completely separated from the through hole 32 and completely entering the core cylinder 3.

In some embodiments, the number of the through holes 32 is 3, so that each elastic element 1 forms a three-point support for the k-wire 4, and can clamp the k-wire 4 more stably.

In other embodiments, the through hole 32 is one (not shown), and the diameter of the elastic member 1 needs to be larger than the inner diameter of the core barrel 3.

Correspondingly, the utility model also provides a core drill handle, including a core section of thick bamboo 3, set up at the chuck 31 of a core section of thick bamboo 3 front end, be used for controlling the chuck that the chuck presss from both sides tightly or relaxs the kirschner wire and control the mechanism, be provided with any one of the aforesaid on a core section of thick bamboo 3 kirschner wire clamping mechanism.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not being in direct contact, but rather being in contact with each other via additional features between them. The third feature being "between" the first and second features may include the third feature being in direct contact with the first and second features, or the third feature being in contact with the first and second features, not directly, but via another feature therebetween.

In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, and/or groups thereof.

Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (9)

1. A k-wire clamping mechanism, comprising:

the through hole is formed in the wall of the core barrel of the hollow drill handle;

the movable pressing piece is positioned in the through hole; and

the elastic piece, the elastic piece sets up on a core section of thick bamboo, the elastic piece is located in the through-hole or the elastic piece keeps off outside the through-hole, works as when the kirschner wire is packed into in the core section of thick bamboo, the activity compresses tightly the piece, and the activity compresses tightly the piece extrusion the elastic piece, makes the elastic piece takes place to produce after elastic deformation and makes the activity compress tightly the elastic force that the piece compressed tightly the kirschner wire.

2. The k-wire clamping mechanism of claim 1, wherein:

the movable pressing piece is a steel ball;

or

The movable pressing piece is a sliding block, and a guide surface facing the insertion direction of the Kirschner wire is arranged on the sliding block.

3. The k-wire clamping mechanism of claim 1, wherein: the elastic piece is an elastic sleeve which is sleeved on the core barrel and is blocked outside the through hole.

4. The k-wire clamping mechanism of claim 3, wherein: and the core barrel is provided with a limiting structure for limiting the axial position of the elastic sleeve.

5. The k-wire clamping mechanism of claim 4, wherein:

the core barrel is provided with a limiting ring groove, and the elastic sleeve is embedded into the limiting ring groove;

or

The elastic sleeve is mounted on the core barrel through a fastener.

6. The k-wire clamping mechanism of claim 1, wherein: the elastic piece is elastic glue or a spring, and the elastic piece is filled in the through hole.

7. The k-wire clamping mechanism of claim 1, wherein: the number of the through holes is one or more, when the number of the through holes is multiple, the movable pressing piece is configured in each through hole, and the through holes are arranged along the circumferential direction of the core barrel.

8. The k-wire clamping mechanism of claim 2, wherein: the number of the through holes is 3.

9. A core drill handle, its characterized in that:

the Kirschner wire clamping mechanism comprises a core barrel, wherein the core barrel is provided with the Kirschner wire clamping mechanism of any one of claims 1-8;

the chuck is arranged at the front end of the core barrel; and

and the chuck control mechanism is used for controlling the chuck to clamp or release the Kirschner wire.

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