CN218165359U

CN218165359U - Broken nail extractor capable of clamping

Info

Publication number: CN218165359U
Application number: CN202122508168.1U
Authority: CN
Inventors: 杨建东; 尹逊
Original assignee: Northern Jiangsu Peoples Hospital
Current assignee: Northern Jiangsu Peoples Hospital
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-12-30
Anticipated expiration: 2031-10-18

Abstract

The utility model provides a broken nail extractor capable of clamping forceps, relating to the technical field of medical instruments. The broken nail extractor capable of clamping comprises a clamp and a nail path expansion drill bit; the forceps holder comprises two clamping forceps arms and extension arms thereof; the two clamping arms are movably connected through a pin shaft; one end of the clamping forceps arm is provided with a grip, and the other end of the clamping forceps arm is movably connected with the extension arm; the tail end of the extension arm is provided with a clamp side block. The clamping forceps arms are movably connected with the extension arm, and the included angle between the extension arm and the clamping forceps arms can be freely adjusted; the nail path expansion drill bit is internally provided with a fixing bayonet, so that the clamp can be fixed with the nail path expansion drill bit, and the pulling operation is convenient to carry out.

Description

Broken nail extractor capable of clamping

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to but disconnected nail extractor of forceps holder.

Background

In bone surgery, screws are typically driven into the bone in order to fix the bone of a patient. However, in practical operation, after the screw is implanted into a bone, due to the action of bearing force and muscle reaction force, the bone screw is often broken from the nut and the joint of the screw and even from a position far away from the nut, and the broken screws remain in a human body, which not only can bring certain psychological barrier to a patient, but also can cause infection and cause complications.

Most broken nails are implanted without nail covers and lack parts which can be clamped, the existing medical instruments are difficult to rapidly take out the broken nails, and the surrounding tissues are often damaged in order to take out the broken nails. Meanwhile, the broken nail is positioned in a human skeleton, soft tissues such as muscles and the like are arranged around the broken nail, the exposed space is limited, and common instruments such as sharp-nose pliers and the like are difficult to effectively clamp the broken nail screw rod due to the large appearance of the jaw part and limited holding force, so that the taking-out difficulty is increased, and the fracture patient is additionally subjected to much pain; how to remove broken nails and reduce bone damage as much as possible becomes the biggest challenge for orthopedists.

Therefore, a new broken nail extractor is needed to be provided to reduce the difficulty of extracting the broken nail.

SUMMERY OF THE UTILITY MODEL

For solving the problem that the broken nail is difficult to take out in the bone surgery, the utility model provides a following technical scheme:

a broken nail extractor with a clamp comprises a clamp and a nail path expansion drill bit; the clamp comprises two clamping clamp arms and extension arms thereof; the two clamping arms are movably connected through a pin shaft; one end of the clamping forceps arm is provided with a grip, and the other end of the clamping forceps arm is movably connected with the extension arm; the tail end of the extension arm is provided with a clamp side block; the end part of the expansion drill bit is provided with a sawtooth drilling opening; a spike hole is arranged in the center of the expansion drill bit; expansion holes are formed in the two sides of the nail path hole; the expansion hole is connected with the nail path hole through a clamping jaw; and a fixing bayonet is arranged on the inner wall of the expansion hole.

Preferably, the distance between the pin shaft and the handle is greater than the distance between the pin shaft and the tail end of the clamping forceps arm.

Preferably, a clamp lock is arranged at a position corresponding to one side of the handle.

Preferably, a ratchet wheel is arranged at the connecting position of the clamping forceps arm and the extension arm.

Preferably, the jaw side pieces are semi-cylindrical.

Preferably, the inner side of the forceps holder is provided with a groove, and a thread is arranged in the groove.

The utility model has the advantages that: the clamping forceps arms are movably connected with the extension arm through ratchet selection, so that the included angle between the extension arm and the clamping forceps arms can be freely adjusted, different operating environments are adapted, and the applicability of the broken nail extractor is effectively improved; meanwhile, under the action of the ratchet wheel, the extension arm and the clamping forceps arm are firmly combined, and are not easy to change due to overlarge stress, so that the stability of the forceps is improved.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a jaw configuration;

FIG. 2 is a schematic view of the nail path expanding drill;

FIG. 3 is a sectional view of the structure of the nail path expanding drill bit;

FIG. 4 is a schematic view of a jaw side block configuration;

fig. 5 is a schematic view of the working state of the present invention;

in the figure: 1-holding the tong arm: 2-a grip; 3-a pin shaft; 4-ratchet wheel; 5-an extension arm; 6-clamping the side block; 7-a clamp lock; 8-expanding holes; 9-breaking the nail; 10-spike hole; 11-sawtooth drilling; 12-fixing the bayonet; 13-jaw opening.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b):

referring to fig. 1, a clip-on broken nail extractor, the clip part comprises two clamping arms 1 and an extension arm 5 thereof; the two clamping arms 1 are movably connected through a pin shaft 3; one end of the clamping forceps arm 1 is provided with a grip 2, and the other end is movably connected with an extension arm 5; the tail end of the extension arm 5 is provided with a clamp side block 6;

as shown in fig. 2-3, the end of the nail path expansion drill bit is provided with a sawtooth drill hole 11; a spike hole 10 is arranged in the center of the expansion drill bit; expansion holes 8 are formed in the two sides of the nail path hole 10; the expansion hole 8 is connected with the spike hole 10 through a clamping jaw 13; a fixing bayonet 12 is arranged on the inner wall of the expansion hole 8; the clamp can be fixed on the expansion drill bit through the fixing bayonet 12, so that the broken nail pulling work is convenient to carry out.

Specifically, the distance between the pin shaft 3 and the handle 2 is larger than the distance between the pin shaft 3 and the tail end of the clamping forceps arm 1, so that the length of the power arm is larger than that of the resistance arm when the forceps are clamped in use, the lever effect is fully exerted, and the clamping effect is improved. The corresponding position of one side of the handle 2 is provided with a clamp lock, and the clamp lock can lock the position of a clamp to fix a clamped object, thereby improving the stability of operation. The connecting position of the clamping arm 1 and the extension arm 5 is provided with the ratchet wheel 4, the ratchet wheel 4 can only rotate in one direction, the included angle between the clamping arm 1 and the extension arm 5 is effectively locked, and the applicability of the clamp is improved.

As shown in fig. 4, the forceps holder side block 6 is a semi-cylinder, a groove is formed in the inner side of the forceps holder, threads are arranged in the groove, the forceps holder side block 6 can be better attached to a broken nail through the threads, and friction is increased.

As shown in fig. 5, when the clip-clamping broken nail extractor of the present invention is used, firstly, the nail path expanding drill bit is used to drill and expand the affected part, the saw tooth drill hole 11 at the bottom of the drill bit can drill the affected part, and the broken nail position is observed and determined through the nail path hole 10; then, adjusting the ratchet wheel 4 according to actual conditions to enable an included angle between the clamping forceps arm 1 and the extension arm 5 to reach a proper angle, enabling the forceps holder side block 6 to penetrate through the forceps holder mouth 13 to contact the broken nail, and adjusting the angle of the forceps holder side block 6 to enable the forceps holder side block to be attached to the broken nail as much as possible; and then the forceps holder is fixed on the nail path expansion drill bit through the fixing bayonet 12, the forceps lock 7 at the tail end of the fixing forceps holder can be pulled out, the operation is simple and quick, and the injury to tissues around the affected part of a patient is small.

In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A clampable broken nail extractor, characterized in that: comprises a clamp and a nail path expansion drill bit; the forceps holder comprises two clamping forceps arms and extension arms thereof; the two clamping forceps arms are movably connected through a pin shaft; one end of the clamping forceps arm is provided with a grip, and the other end of the clamping forceps arm is movably connected with the extension arm; the tail end of the extension arm is provided with a clamp side block; the end part of the expansion drill bit is provided with a sawtooth drill hole; a spike hole is arranged in the center of the expansion drill bit; expansion holes are formed in the two sides of the nail path hole; the expansion hole is connected with the nail path hole through the clamping jaw; a fixed bayonet is arranged on the inner wall of the expansion hole;

a clamp lock is arranged at a corresponding position on one side opposite to the handle; and a ratchet wheel is arranged at the connecting position of the clamping forceps arm and the extension arm.

2. A graspable broken nail extractor according to claim 1, further comprising: the distance between the pin shaft and the handle is larger than the distance between the pin shaft and the tail end of the clamping tong arm.

3. A graspable broken nail extractor according to claim 1, wherein: the forceps holder side block is a semi-cylinder.

4. A graspable broken nail extractor according to claim 3, further comprising: the inner side of the forceps holder is provided with a groove, and threads are arranged in the groove.