CN212466146U

CN212466146U - Special clamping and fixing forceps for orthopedic surgery

Info

Publication number: CN212466146U
Application number: CN202020506675.4U
Authority: CN
Inventors: 刘志伟; 余辉辉; 张梦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-02-05
Anticipated expiration: 2030-04-09

Abstract

The utility model relates to a fixed pincers of special centre gripping of bone surgery includes at least: the clamp comprises a left clamp arm (1) and a right clamp arm (3) which are hinged through a pin shaft (2) and provided with a handle ring, the head ends of the left clamp arm (1) and the right clamp arm (3) are two arc-shaped clamping pieces (6) which are symmetrical to each other and provided with anti-skidding lines, an upper rack (41) which is of an integrated structure with the left clamp arm and provided with a trapezoidal upper transverse sawtooth belt (412) is arranged on the inner side wall of the tail end of the left clamp arm (1), and a cavity (7) which can be used for placing a lower rack (42) and is provided with one end with a pressing column (421) is arranged at a position corresponding to the upper rack (41) in the inner side wall of the tail end of the right clamp arm (.

Description

Special clamping and fixing forceps for orthopedic surgery

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a fixed pincers of special centre gripping of bone surgery.

Background

Until now, when the hospital treats fracture patients, the reduction method of screw internal fixation is still adopted. When in operation, the tissue of the fracture part is cut open, and is clamped and fixed by bone holding forceps, and then is reset and fixed by screws. The bone holding forceps used at present are mainly divided into two types of bone holding devices and sharp-nose reduction forceps. Although the bone holder has large clamping force and is difficult to rotate, which is beneficial to the general reduction of the fracture, the bone holder has larger volume and occupies larger incision space, thereby not only influencing the subsequent drilling operation and screwing operation, but also needing larger periosteum stripping range and influencing the blood supply of the fracture. The sharp-nose reduction forceps have the defects of small clamping force, easy breakage and the like although the size is small.

In order to overcome the above disadvantages, the patent document with publication number CN2877595 discloses a clamping and fixing clamp special for orthopedic surgery, which is composed of a movable clamp body and a stationary clamp body hinged together, and is characterized in that the working ends of the movable clamp body and the stationary clamp body are symmetrically provided with quadrilateral clamping spring pieces, the clamping spring pieces are provided with anti-skid folding edges, and the handheld ends of the movable clamp body and the stationary clamp body are fixed by fixing nuts.

Meanwhile, another patent document with publication number CN201123833 discloses a special clamping and fixing clamp for orthopedic surgery, which is characterized in that the front ends of a left clamp arm and a right clamp arm are respectively provided with a clamping piece which is symmetrical to each other and provided with an anti-slip folding edge on the upper surface, an arc-shaped plug with wedge-shaped saw teeth on the outer side is connected to the inner side wall of the rear end of the left clamp arm, a through hole corresponding to the arc-shaped plug is formed in the right clamp arm and communicated with a cavity in the tail end of the right clamp arm, a rectangular opening communicated with the cavity is formed in the inner side wall of the right clamp arm, a handle passes through the rectangular opening and is connected with a plug in the cavity, the front end of the plug is matched with the wedge-shaped saw teeth on the outer side of the arc-shaped.

In summary, although the fixing forceps solve the disadvantages of bone holders and sharp nose reduction forceps, the following problems still exist:

1. above-mentioned two kinds of fixed pincers have all adopted the clamping piece that has designed anti-skidding folded edge as clamping device, though the demand to the bone centre gripping of different positions has been solved in this design, but the existence of folded edge makes actual operation become difficult, and the existence of folded edge can be more or less the restriction range of using the position.

2. Both of the two kinds of fixing forceps adopt the fixing device designed at the tail part of the forceps handle, so that the clamped bone is fixed, but the fixing devices are too long, and the actual operation can be influenced. Thereby affecting the aesthetic and practical properties of the pliers body.

Therefore, the application aims to provide the special clamping and fixing forceps for the orthopedic surgery, which can overcome the defects.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor studied a lot of documents and patents when making the present invention, but the space did not list all details and contents in detail, however, this is by no means the present invention does not possess these prior art features, but on the contrary the present invention has possessed all features of the prior art, and the applicant reserves the right to increase the related prior art in the background art.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a fixed pincers of special centre gripping of bone surgery includes at least: the left tong arm and the right tong arm are hinged through a pin shaft and provided with a hand holding ring. The head ends of the left clamp arm and the right clamp arm are two arc-shaped clamping pieces which are symmetrical to each other and provided with anti-skidding lines. And an upper rack which is integrated with the left clamp arm and is provided with a trapezoidal upper transverse sawtooth belt is arranged on the inner side wall of the tail end of the left clamp arm. And a cavity which can be used for placing one end of the lower rack and is provided with a pressing column is arranged in the position corresponding to the upper rack in the inner side wall of the tail end of the right clamp arm.

According to a preferred embodiment, the lower rack is provided with a lower transverse sawtooth belt capable of being meshed with the upper transverse sawtooth belt of the upper rack, so that the upper rack and the lower rack can be meshed into a whole.

According to a preferred embodiment, the space between the toothed belts of the upper and lower transverse toothed belts is the width of the upper bottom surface of the toothed belt.

According to a preferred embodiment, the pressing column is fixed at the center of the upper bottom surface of the last lower transverse sawtooth belt at one end of the lower rack close to the right forceps arm, and the pressing column can penetrate through a pore channel which is arranged at the center of the cavity and is formed in the upper arm surface of the right forceps arm.

According to a preferred embodiment, the cavity is a cavity with an opening on the inner side wall for placing the end of the lower rack with the pressing post, at a position corresponding to the position of the upper rack on the left jawarm.

According to a preferred embodiment, the pressing column is sleeved in a spring, one end of the spring is fixed to the central position of the upper bottom surface of the lower transverse sawtooth belt, and the other end of the spring is fixed to the inner surface of the pore channel.

According to a preferred embodiment, the left and right jawarms have a thickness set so that the cavity has sufficient space to allow the lower rack to reciprocate within the cavity with movement of the pressing post.

According to a preferred embodiment, said upper and lower transverse toothed belts can be defined by a trapezoidal structure.

According to a preferred embodiment, the upper and lower racks can be defined by arcs.

According to a preferred embodiment, the clamping piece can be limited by an arc shape while the end part thereof is an arc-shaped head, and the clamping inner wall surface thereof is provided with anti-slip lines.

The utility model has the advantages of:

1. through the rack of trapezoidal bench-type sawtooth meshing, arrange the fixed part of orthopedics fixing forceps between two tong arms, prevented that overlength fixing device from influencing the actual operation outside the tong arm and influencing the holistic pleasing to the eye degree of pincers body.

2. The clamping piece is designed into an arc-shaped clamping piece, so that the clamping piece can adapt to the clamping of bones at various complex parts, the antiskid lines in the clamping piece can enable the clamped bones to be difficult to slide off, and the arc-shaped clamping piece does not have a sharp place, so that secondary damage can not be caused to tissues at an affected part.

Drawings

FIG. 1 is a schematic structural view of a preferred clamping and fixing forceps for orthopedic surgery of the present invention;

FIG. 2 is a schematic view of the upper and lower racks of the preferred clamping and fixing forceps for orthopedic surgery of the present invention; and

fig. 3 is an elevation view of the upper and lower racks of the preferred clamp of the present invention.

List of reference numerals

1: left tong arm 2: and (3) pin shaft: right clamp arm

4: rack 41: upper rack 42: lower rack

412: upper cross-shaped toothed belt 421: pressing the column 422: spring

423: lower transverse toothed belt 5: through hole 6: clamping piece

7: hollow cavity

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

As shown in fig. 1 to 3, the utility model provides a special clamping and fixing forceps for orthopedic operation, which at least comprises: a left clamp arm 1 and a right clamp arm 3 which are hinged with each other through a pin shaft 2 and are provided with a handle ring. Preferably, the grip ring may be a circular grip ring. The head ends of the left clamp arm 1 and the right clamp arm 3 are two arc-shaped clamping pieces 6 which are symmetrical to each other and provided with anti-skid lines. The anti-slip threads in the arc-shaped clamping piece 6 can be arranged on a gasket with certain flexibility, and then the gasket is jointed on the inner surface of the arc-shaped clamping piece. The inner side wall of the tail end of the left clamp arm 1 is provided with an upper rack 41 which is integrated with the left clamp arm and is provided with an upper transverse sawtooth belt 412. A cavity 7 which can be used for placing one end of the lower rack 42 with the pressing column 421 is arranged in the inner side wall of the tail end of the right clamp arm 3 at the position corresponding to the upper rack 41. The pressing post may be a cylinder with one end fixed to the lower rack 42 and the other end exposed out of the cavity 7. The exposed end can be sleeved with a soft cap head such as sponge and the like so as to be pressed by fingers of a person, and discomfort can not be caused.

Preferably, the lower rack 42 has a lower horizontal toothed belt 423 capable of meshing with the upper horizontal toothed belt 412 of the upper rack 41. The upper rack 41 and the lower rack 42 can be engaged as one body. After the toothed belts which are staggered with the canines are meshed, the upper rack and the lower rack are integrated, and the anti-stretching and anti-compression capacity is achieved. So that the distance between the two jawarms does not vary.

Preferably, the interval between the tooth belts of the upper transverse toothed belt 412 and the lower transverse toothed belt 423 is the width of the upper bottom surface of the tooth belts, while the inclined belt surface is smooth enough and the surface perpendicular to the belt surface is smooth enough. Facilitating the lower rack 42 to be separated from the upper rack 41 as the pressing pole 421 moves downward. The smooth surface enables the toothed belt to produce less friction during relative movement. The reduction of the effect of the obstruction facilitates the relative movement of the toothed belts. Meanwhile, when the toothed belts are separated, the smooth vertical toothed belt surface can also play a role in reducing obstruction. So that the rack separation is easier to realize.

Preferably, the pressing column 421 is fixed at the center of the upper bottom surface of the last lower transverse sawtooth belt 423 at the end of the lower rack 42 close to the right forceps arm 3, and the pressing column 421 can pass through the hole 5 formed on the upper wall surface of the right forceps arm 3 at the center of the cavity 7. The pressing column is fixed on the toothed belt and can drive the lower rack to move downwards. The hole 5 may be a circular hole having a diameter larger than the diameter of the pressing post. For the pressing column to pass through the through hole.

Preferably, the cavity 7 is a cavity with only an inner wall open for placing the end with the pressing post of the lower rack 42. Which is located at a position corresponding to the position of the upper rack 41 on the left jawarm 1. The cavity may have a thickness of 1cm and the upper rack 41 is located close to the duct by means of a spring connecting the toothed belt and the inner surface of the duct of the cavity, i.e. in the upper part of the cavity in the rest state. Which can move up and down in the cavity with the pressing column.

Preferably, the pressing column 421 is sleeved in the spring 422, and one end of the spring 422 is fixed to the center of the upper bottom surface of the lower transverse sawtooth belt 423. The other end is fixed to the inner surface of the duct 5. The spring may be a very small spring. Its length may be 0.3 cm.

Preferably, the left and right jawarms 1, 3 have a set thickness. Its thickness may be 1.2cm so that the cavity 7 has enough space to allow the lower rack 42 to reciprocate within the cavity 7 with the movement of the pressing column.

Preferably, the upper and lower cross-shaped

toothed belts

412 and 423 can be defined by a trapezoidal mesa structure. The height of the vertical surface of the trapezoidal table on the toothed belt can be 0.2 cm. The thickness of the base sheet connecting all the trapezoidal stages in series may be 0.1 cm.

Preferably, the upper rack 41 and the lower rack 42 can be defined by arcs. Because the two clamp arms do circular motion around the pin shaft in the relative motion process. The upper rack and the lower rack are designed according to circular arcs. According with the movement track of the clamp arm.

Preferably, the holding piece 6 can be defined by an arc shape while its end portion is an arc-shaped head, and its holding inner wall surface is provided with an anti-slip pattern. The design of the arc-shaped head is to avoid the damage to the human body, and anti-skid lines are arranged in the arc-shaped head, so that the clamped bone is not easy to loosen and slip.

For the convenience of understanding, the working principle of the special clamping and fixing clamp for the orthopedic surgery is explained.

When the operation, use the utility model discloses a fixed pincers are got the affected part bone clamp, when pressing from both sides, when two tong arms are inside in opposite directions motion, the meshing is accomplished to the upper and lower sawtooth racks that can mesh mutually, accomplishes simultaneously fixedly, and at this moment, the tong arms have been meshed fixedly, can not produce relative displacement again. Then the screw fixing operation is carried out on the fracture part, after the bone fixation is finished, the pressing column is pressed downwards, the lower rack moves downwards along with the pressing column, and the upper rack is fixed, so that the meshed sawtooth strips are loosened and meshed, the pressing column is pressed all the time, the fingers sleeved in the handle ring expand outwards, the forceps arms move away from each other relatively until the upper rack and the lower rack are separated completely or the separation angle is enough to take off the fixing forceps. This eliminates the fixation.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A special clamping and fixing clamp for orthopedic surgery at least comprises:

a left clamp arm (1) and a right clamp arm (3) which are hinged through a pin shaft (2) and are provided with a handle ring,

it is characterized in that the preparation method is characterized in that,

the head ends of the left clamp arm (1) and the right clamp arm (3) are two mutually symmetrical arc-shaped clamping sheets (6) with anti-skid lines,

an upper rack (41) which is integrated with the left forceps arm and is provided with an upper transverse sawtooth belt (412) is arranged on the inner side wall of the tail end of the left forceps arm (1),

a cavity (7) which can be used for placing one end of the lower rack (42) and is provided with a pressing column (421) is arranged in the inner side wall of the tail end of the right clamp arm (3) at the position corresponding to the upper rack (41).

2. The clamp fixing forceps for orthopedic operations according to claim 1, characterized in that the lower rack (42) is provided with a lower horizontal sawtooth belt (423) capable of meshing with the upper horizontal sawtooth belt (412) of the upper rack (41), so that the upper rack (41) and the lower rack (42) can be meshed into a whole.

3. The special clamping and fixing forceps for orthopedic operations according to claim 2, characterized in that the interval between the toothed belts of the upper transverse toothed belt (412) and the lower transverse toothed belt (423) is the width of the upper bottom surface of the toothed belt.

4. The special clamping and fixing forceps for orthopedic operations as claimed in claim 3, characterized in that the pressing column (421) is fixed at the center of the upper bottom surface of the last lower transverse sawtooth band (423) at one end of the lower rack (42) close to the right forceps arm (3), and the pressing column (421) can pass through the hole (5) formed in the center of the cavity (7) on the upper arm surface of the right forceps arm (3).

5. The clamp for holding bone clamps as claimed in claim 4, characterized in that said cavity (7) is a cavity with an end with a pressing post, open on the inner side wall only, for the placement of said lower rack (42), at a position corresponding to the position of said upper rack (41) on said left tong arm (1).

6. The special clamping and fixing forceps for orthopedic operations as claimed in claim 4, characterized in that the pressing column (421) is sleeved in a spring (422), one end of the spring (422) is fixed on the center of the upper bottom surface of the lower transverse sawtooth band (423), and the other end is fixed on the inner surface of the tunnel (5).

7. The clamp fixation forceps for orthopedic operations as claimed in claim 4, characterized in that the left forceps arm (1) and the right forceps arm (3) have a set thickness, so that the cavity (7) has enough space to make the lower rack (42) reciprocate in the cavity (7) with the movement of the pressing column.

8. The clamp-fixing forceps for orthopedic operations according to claim 2, characterized in that the upper and lower transverse toothed belts (412, 423) can be defined by a trapezoidal table structure.

9. The clamp fixation forceps for orthopedic operations according to claim 1, characterized in that the upper rack (41) and the lower rack (42) can be defined by an arc shape.

10. The special clamping and fixing forceps for orthopedic operations as claimed in claim 1, characterized in that the clamping sheet (6) can be limited by an arc shape while its end is an arc head, and its clamping inner wall surface is provided with anti-slip lines.