CN211243668U

CN211243668U - Orthopedic smooth screw extractor

Info

Publication number: CN211243668U
Application number: CN201921197143.0U
Authority: CN
Inventors: 王先辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-08-14
Anticipated expiration: 2029-07-29

Abstract

The utility model discloses an orthopedic smooth screw extractor, which comprises a component A, a component B and a component C, wherein the component A comprises a sleeve and a handle, the handle is welded and fixed with the sleeve, the sleeve is wide at the top and narrow at the bottom, the whole body is in a spoon shape, and two grooves are arranged on the handle; the utility model has the advantages of reasonable design, high durability and convenient use, it is fast to take out orthopedics smooth silk screw, part A can prevent effectively that metal piece from falling into soft tissue on every side when smooth silk screw distal end is drilled, part B has the drill bit from taking the limit deep, can let the doctor more directly perceived when using this drill bit to punch, it is faster safer to punch, the afterbody of triangular prism body can let the drill bit match with the electric drill installation more easily, part C's head is a reverse drill bit, even go up the electric drill after, when the electric drill is anti-bored, can pressurize between drill bit and the smooth silk screw, frictional force can strengthen, utilize this frictional force can take out smooth silk screw, and is swift convenient, and is simple and practical.

Description

Orthopedic smooth screw extractor

Technical Field

The utility model belongs to the technical field of the surgical instruments, specifically be an orthopedic smooth silk screw extractor.

Background

The most common operation method for treating fracture at present is internal fixation of a fracture incision reduction steel plate screw, and the steel plate and the screw in the body need to be taken out after fracture healing. On one hand, the friction force between the screw and the bone is greatly increased after the fracture is healed, and on the other hand, the screw is deformed when bearing large stress in the body, so that the resistance of the screw is very large when the screw is taken out, and the situation that the screw slides frequently occurs. Particularly, in recent years, the locking steel plate and the locking screw are widely applied, the locking steel plate and the matched locking screw tail are locked by fine threads, and in limb load activities after fracture healing, the threads between the screw tail and the locking hole on the bone fracture plate are deformed easily due to stress bearing of the screw, so that the screw is more difficult to screw out, and the probability of screw thread slipping during strong rotation is greatly increased. The screw sliding thread can obviously increase the taking-out difficulty, prolong the operation time, increase the infection probability, cause the serious complications such as taking-out failure and even re-fracture, and the like, and the existing orthopedic sliding thread screw extractor has poor use effect and is difficult to meet the requirements of taking out different types of screw sliding threads.

To solve the problems in the related art, no effective solution has been proposed, and for this reason, an orthopedic smooth-wire screw extractor has been proposed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a smooth silk screw extractor of orthopedics has convenient to use, punches advantages such as safety, has solved current smooth silk screw extractor of orthopedics and has used inconvenient, easily cause smooth silk scheduling problem of screw.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an orthopedic smooth silk screw extractor, includes part A, part B and part C, part A wholly is the spoon form, part A includes sleeve and handle, handle and sleeve welded fastening, it is wide narrow down on the sleeve, be provided with two recesses on the handle, part B includes part B somatic part, part B afterbody, limit for depth portion and forward drill bit, part B somatic part with part B afterbody is fixed, the limited deep of part B somatic part one end is fixed, limit for depth portion one end is fixed with the forward drill bit, part C includes part C somatic part, part C afterbody and anti-spiral twist flat head brill, part C somatic part is fixed with part C afterbody, anti-spiral twist flat head brill is fixed in part C somatic part one end, anti-spiral twist flat head brill top is the flat head, and the drilling body surface is provided with the cutting edge of slope.

In a further refinement, the component a is a component made of 304 stainless steel.

In a further improvement, the component B is a member made of black steel with the hardness of 75 HRC.

In a further development, the component C is a component made of HSS high-speed steel with a hardness of 70 HRC.

In a further improvement, the groove is internally provided with anti-skid lines.

In a further improvement, the part B body and the part C body are both cylindrical.

In a further improvement, the tail part of the component B and the tail part of the component C are triangular prisms.

(III) advantageous effects

Compared with the prior art, the utility model provides a smooth silk screw extractor of orthopedics possesses following beneficial effect:

1. this smooth silk screw extractor of orthopedics, structural design is reasonable, takes out smooth silk screw of orthopedics fast, and in part A can effectively prevent that the metal piece from falling into soft tissue on every side when smooth silk screw distal end is drilled, part B has the drill bit from taking the limit deep, can let the doctor more directly perceived when using this drill bit to punch, punches faster safer.

2. This smooth silk screw extractor of orthopedics, the afterbody of triangular prism body can let the drill bit match with the electric drill installation more easily, and part C's head is a reverse bit, even after the electric drill, when the electric drill back-drilling, can pressurize between drill bit and the smooth silk screw, and frictional force can strengthen, utilizes this frictional force can take out smooth silk screw, and is swift convenient, simple and practical.

3. This smooth silk screw extractor of orthopedics is provided with anti-skidding line in the recess, when picking up the handle, can improve antiskid nature, lets thumb and recess can closely laminate, can play the antiskid effect, and it is more stable to take part A.

Drawings

FIG. 1 is a perspective view of the component A of the present invention;

FIG. 2 is a top view of the present invention component A;

FIG. 3 is a schematic structural view of a component B of the present invention;

fig. 4 is a schematic structural view of a component C of the present invention.

In the figure: 1. a component A; 101. a sleeve; 102. a grip; 103. a groove; 2. a component B; 201. a component B body; 202. the tail part of the component B; 203. limiting the depth; 204. a forward drill bit; 3. a component C; 301. A component C body; 302. reverse-spiral-twisting flat-head drilling; 303. part C tail.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an orthopedic sliding wire screw extractor comprises a component A1, a component B2 and a component C3, wherein the component A1 is spoon-shaped as a whole, the component A1 comprises a sleeve 101 and a grip 102, the grip 102 is fixedly welded with the sleeve 101, the sleeve 101 is wide at the top and narrow at the bottom, two grooves 103 are formed in the grip 102, the component B2 comprises a component B body 201, a component B tail 202, a depth limiting part 203 and a forward drill bit 204, the component B body 201 is fixed with the component B tail 202, one end of the component B body 201 is fixed with the depth limiting part 203, one end of the depth limiting part 203 is fixed with the forward drill bit 204, the component C3 comprises a component C body 301, a component C tail 303 and a reverse twist flat drill 302, the component C body 301 is fixed with the component C tail 303, the reverse twist flat drill 302 is fixed at one end of the component C301, the top 302 is flat, the surface of the drill body is provided with an inclined cutting edge.

As shown in fig. 1, the groove 103 is provided with anti-slip lines, so that when an operator holds the component a, the thumb and the groove 103 can be tightly attached to each other, and an anti-slip effect can be achieved.

As shown in fig. 2 and 3, the body 201 of the component B and the body 301 of the component C are both cylindrical.

As shown in fig. 2 and 3, the tail part 202 of the component B and the tail part 303 of the component C are triangular prisms, and the tail parts of the triangular prisms can make the drill bit more easily matched with a drill for installation.

The part a1 is a member made of 304 stainless steel, which is repeatedly autoclavable and corrosion resistant.

The component B2 is a member made of black steel with the hardness of 75HRC, has very hard texture, can be repeatedly sterilized at high temperature, and is wear-resistant.

The part C3 is a member made of HSS high speed steel with a hardness of 70HRC, is very tough, can be used repeatedly, is resistant to wear, can be sterilized repeatedly at high temperatures, and is corrosion resistant.

The working principle is as follows: when the drill is used, the narrow opening of the sleeve 101 of the component A1 is firstly propped against the tail part of the sliding wire screw, the component B2 is installed on the electric drill, a drill bit of the component B2 installed on the electric drill is used for drilling at the tail part of the sliding wire screw, the depth of the drilled hole is drilled to the position of the depth limiting part 203, metal debris can fall from the narrow opening of the sleeve 101 during drilling, the debris is prevented from falling onto a wound, after the hole is drilled, the metal debris generated during drilling is carefully cleaned by an aspirator, then the component A1 is removed, the component B2 on the electric drill is taken down, the component C3 is installed, the reverse-twist flat-head drill 302 of the component C3 is propped against the hole which is just drilled, the drill bit is propped forcibly, pressure is applied to the electric drill, the electric drill is set to rotate reversely, and the electric drill is started, so that the sliding wire screw is reversely screwed.

In summary, the utility model has reasonable structural design, the speed of taking out the orthopedic sliding screw is high, the component A1 can effectively prevent metal debris from falling into surrounding soft tissues when the distal end of the sliding screw is drilled, and the component B2 has the drill bit self-limiting deep part 203, so that doctors can more intuitively drill holes by using the drill bit, and the holes can be drilled faster and safer; the tail part of the triangular prism body can enable a drill bit to be more easily installed and matched with an electric drill, the head part of the component C3 is a reverse drill bit, after the electric drill is connected, when the electric drill reversely drills, the pressure between the drill bit and a sliding screw can be increased, the friction force can be increased, the sliding screw can be taken out by utilizing the friction force, and the electric drill is quick, convenient, simple and practical; be provided with anti-skidding line in recess 103, when picking up handle 102, can improve antiskid nature, let thumb and recess 103 can closely laminate, can play the antiskid effect, and it is more stable to take part A1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" 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 simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An orthopedic smooth-silk screw extractor comprising a component a (1), a component B (2), and a component C (3), characterized in that: the part A (1) is integrally spoon-shaped, the part A (1) comprises a sleeve (101) and a handle (102), the handle (102) and the sleeve (101) are welded and fixed, the sleeve (101) is wide at the top and narrow at the bottom, two grooves (103) are formed in the handle (102), the part B (2) comprises a part B body (201), a part B tail (202), a depth limiting part (203) and a forward drill bit (204), the part B body (201) is fixed with the part B tail (202), one end of the part B body (201) is fixed with the depth limiting part (203), one end of the depth limiting part (203) is fixed with the forward drill bit (204), the part C (3) comprises a part C body (301), a part C tail (303) and a reverse-twist flat drill bit (302), the part C body (301) is fixed with the part C tail (303), and the reverse-twist flat drill bit (302) is fixed at one end of the part C (301), the top of the reverse-spiral-twisting flat-head drill (302) is a flat head, and the surface of the drill body is provided with an inclined cutting edge.

2. An orthopedic smooth screw extractor as claimed in claim 1, wherein: the component a (1) is a member made of 304 stainless steel.

3. An orthopedic smooth screw extractor as claimed in claim 1, wherein: the component B (2) is a member made of black steel with the hardness of 75 HRC.

4. An orthopedic smooth screw extractor as claimed in claim 1, wherein: the component C (3) is a member made of HSS high speed steel with a hardness of 70 HRC.

5. An orthopedic smooth screw extractor as claimed in claim 1, wherein: anti-skid grains are arranged in the groove (103).

6. An orthopedic smooth screw extractor as claimed in claim 1, wherein: the component B body part (201) and the component C body part (301) are both cylindrical.

7. An orthopedic smooth screw extractor as claimed in claim 1, wherein: the tail part (202) of the component B and the tail part (303) of the component C are triangular prisms.