CN212788671U

CN212788671U - Patella reduction forceps with slidable guide tube

Info

Publication number: CN212788671U
Application number: CN202020786852.9U
Authority: CN
Inventors: 蒋瑞睿; 陈华
Original assignee: Jiangyin Peoples Hospital
Current assignee: Jiangyin Peoples Hospital
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-03-26
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a stand pipe slidable patella pincers that reset, including the pincers body, be provided with the spurt on the clamping part of the pincers body, the internal surface of clamping part sets up to the arcwall face with patella matched with, is provided with the guide way on the clamping part, and the slip is provided with the stand pipe on the guide way, and the stand pipe is provided with the guiding hole with ke shi needle matched with. Above-mentioned stand pipe slidable patella pincers that reset are rational in infrastructure, and the pincers body is more laminated with the patella, and the stand pipe can shift according to actual demand, and easy operation is convenient.

Description

Patella reduction forceps with slidable guide tube

Technical Field

The utility model belongs to the technical field of medical instrument and specifically relates to a uide tube slidable patella pincers that reset.

Background

The cuboid fracture is one of the common fracture types in clinic, but the reduction forceps used in the fracture reduction process often influence the insertion position of the kirschner wire or cause the problem of poor kirschner wire position and the like, and particularly for doctors with low annual capital and experience, the kirschner wire fixing process can be repeated for many times in the operation.

In order to solve the above problem, as described in CN204971457U, the head of the reduction forceps body is provided with a reduction forceps threaded hole, and the hollow guide sleeve is fixed on the reduction forceps threaded hole through a thread at the front end of the hollow guide sleeve. Although the above scheme can fix the driving direction of the kirschner wire, the hollow guide tube is fixedly connected, the direction of the kirschner wire is fixed after the patella is clamped by the reset forceps, if the patella is driven from a specific direction, the clamping direction needs to be calculated in advance, or multiple reversing tests need to be carried out on the patella, and the use is complex and laborious; and the wrapping surface of the reduction forceps and the patella is small, so that the sliding phenomenon is easy to occur, and the operation process is influenced.

Therefore, there is a need for an improved patella reduction forceps of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defect that exists among the prior art, provide a stand bar slidable patella pincers that reset, the pincers body is more laminated with the patella, and the stand bar can shift according to the actual demand, and easy operation is convenient.

In order to realize the technical effects, the utility model adopts the technical scheme that: the utility model provides a stand pipe slidable patella pincers that reset, includes the pincers body, be provided with the thorn suddenly on the clamping part of the pincers body, the internal surface of clamping part sets up to the arcwall face with patella matched with, be provided with the guide way on the clamping part, the slip is provided with the stand pipe on the guide way, the stand pipe is provided with the guiding hole with ke shi needle matched with. Through the design, the clamp body can clamp the patella more closely, so that the clamp body is prevented from sliding on the patella; meanwhile, the guide tube can be shifted according to the actual condition of the operation, so that the optimal nail needle effect is achieved.

The preferable technical scheme is that the guide pipe comprises a guide pipe body and a connecting pipe, the connecting pipe is arranged at the end part of the guide pipe body, the outer side wall of the connecting pipe is provided with external threads, and the connecting pipe is arranged in the guide groove in a penetrating manner; the guide pipe is characterized by further comprising a locking nut in threaded fit with the connecting pipe, and the opposite end faces of the guide pipe body and the locking nut are in limit fit with the clamping part. Through the design, the purposes of transposition and fixation of the guide pipe in the guide groove can be realized; as an equivalent alternative, also: the guide pipe body is provided with internal threads and a hollow outer stud matched with the internal threads, and the clamping part is clamped between the opposite end faces of the guide pipe body and the hollow outer stud.

The preferable technical scheme is that the periphery of the locking nut is in an even number polygon arrangement, a limiting strip for limiting the rotation of the locking nut is arranged on the inner surface of the clamping part, and the limiting strip is in limiting fit with the locking nut. Through such design, spacing can restrict lock nut and rotate, only need twist the stand pipe body like this and can realize the locking of stand pipe.

The preferable technical scheme is that the thickness of the locking nut and the limiting strip is not more than the height of the protruding thorns. Through such design, avoided lock nut and spacing strip to producing the effect of stabbing and interfered, the stabbing top of being convenient for is tight on the patella and prevents that the pincers body from taking place to slide.

The preferable technical scheme is that the guide groove is arranged in a stepped manner, the guide groove is sequentially provided with a first stepped groove and a second stepped groove from the outer surface to the inner surface of the clamping part, the periphery of the locking nut is arranged in an even number of polygons, and the locking nut is limited in the second stepped groove and only matched in a sliding manner; the connecting pipe is arranged in the first step groove and the second step groove in a penetrating mode and is in locking fit with the locking nut. Through such design, set up lock nut in the middle of the clamping part, can avoid lock nut to produce the interference to the effect of stinging completely.

The utility model has the advantages and the beneficial effects that: the sliding patella reduction forceps of the guide pipe of the utility model has reasonable structure, increases the area for wrapping the patella by arranging the cambered surface of the clamping part, and reduces the sliding phenomenon of the reduction forceps; the guide tube is arranged in a sliding mode, the reset forceps can be used for nailing the Kirschner wire into the optimal point only by moving the guide tube after holding the patella, compared with the prior art, the clamping direction does not need to be calculated in advance, or multiple reversing tests are carried out on the patella, and the use convenience of medical workers is improved.

Drawings

Fig. 1 is a schematic structural view of an embodiment 1 of patella reduction forceps with a slidable guide tube according to the present invention;

fig. 2 is a schematic view of the clamping portion of the patella reduction forceps embodiment 1 with the guide tube slidable according to the present invention;

fig. 3 is an exploded view of the clamping portion of the patella reduction forceps embodiment 1 with the guide tube slidable according to the present invention;

fig. 4 is a schematic view of the clamping portion of embodiment 2 of the patella reduction forceps with the guide tube slidable according to the present invention;

fig. 5 is an exploded view of the clamping portion of embodiment 2 of the patella reduction forceps with a slidable guide tube according to the present invention;

fig. 6 is a side view of the clamping portion of patella reduction forceps embodiment 3 with a slidable guide tube according to the present invention.

In the figure: 1. a clamping portion; 2. bur protruding; 3. a guide groove; 31. a first step groove; 32. a second stepped groove; 4. a guide tube; 41. a guide hole; 42. a guide tube body; 43. a connecting pipe; 44. locking the nut; 5. and (5) a limiting strip.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Reference to "inner surface" and "outer surface" are intended only to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Example 1

As shown in fig. 1 to 3, the patella reduction forceps with a slidable guide tube according to embodiment 1 includes a forceps body, a protruding spine 2 is disposed on a clamping portion 1 of the forceps body, an inner surface of the clamping portion 1 is configured as an arc-shaped surface matched with a patella, a guide groove 3 is disposed on the clamping portion 1, a guide tube 4 is slidably disposed on the guide groove 3, and the guide tube 4 is provided with a guide hole 41 matched with a kirschner wire.

The guide tube 4 comprises a guide tube body 42 and a connecting tube 43, the connecting tube 43 is arranged at the end part of the guide tube body 42, the outer side wall of the connecting tube 43 is provided with external threads, and the connecting tube 43 is arranged in the guide groove 3 in a penetrating way; and the clamping device also comprises a locking nut 44 in threaded fit with the connecting pipe 43, and the opposite end surfaces of the guide pipe body 42 and the locking nut 44 are in limited fit with the clamping part 1.

The periphery of the locking nut 44 is square, the inner surface of the clamping part 1 is provided with a limiting strip 5 for limiting the rotation of the locking nut 44, the limiting strip 5 is parallel to the axial direction of the guide groove 3, and the two limiting strips 5 are adjacent to the parallel edges of the locking nut 44.

The thickness of the locking nut 44 and the limiting strip 5 does not exceed the height of the spurs 2.

In use according to embodiment 1, the patella reduction forceps are clamped to the patella and the guide tube 4 is unscrewed slightly so that the connector 43 remains in the locking nut 44 and the guide tube body 42 is movable within the guide channel 3, and the guide tube 4 is tightened after the guide tube body 42 has moved to the predetermined stapling point.

Example 2

As shown in fig. 4 to 5, embodiment 2 differs from embodiment 1 in that the guide groove 3 is provided in a stepped manner, the guide groove 3 is provided with a first stepped groove 31 and a second stepped groove 32 in this order from the outer surface to the inner surface of the clamping portion 1, the lock nut 44 has a square circumferential shape, and the lock nut 44 is retained in the second stepped groove 32 and is only slidably fitted; the connection pipe 43 is lockingly engaged with the lock nut 44 through the first stepped groove 31.

In use of embodiment 2, the patella reduction forceps are clamped to the patella and the guide tube 4 is unscrewed slightly so that the connector 43 remains in the locking nut 44 and the guide tube body 42 is movable within the second stepped channel 32, and the guide tube 4 is tightened after the guide tube body 42 has moved to the predetermined pinning point.

Example 3

As shown in fig. 6, embodiment 3 differs from embodiment 2 in that three guide grooves 3 are provided in parallel with each other.

Embodiment 3 when in use, after the doctor determines the needle point, the doctor only needs to move the guide tube 4 on the corresponding guide groove 3 to reach the position above the needle point.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A patella reduction forceps with a slidable guide tube is characterized by comprising a forceps body, wherein a clamping part of the forceps body is provided with a spure, the inner surface of the clamping part is provided with an arc-shaped surface matched with a patella, the clamping part is provided with a guide groove, the guide groove is provided with a guide tube in a sliding manner, and the guide tube is provided with a guide hole matched with a Kirschner wire;

the guide pipe comprises a guide pipe body and a connecting pipe, the connecting pipe is arranged at the end part of the guide pipe body, the outer side wall of the connecting pipe is provided with external threads, and the connecting pipe is arranged in the guide groove in a penetrating manner; the guide pipe is characterized by further comprising a locking nut in threaded fit with the connecting pipe, and the opposite end faces of the guide pipe body and the locking nut are in limit fit with the clamping part.

2. The patella reduction forceps with the slidable guide tube according to claim 1, wherein the outer periphery of the lock nut is an even number of polygons, a limiting strip for limiting rotation of the lock nut is arranged on the inner surface of the clamping portion, and the limiting strip is in limited fit with the lock nut.

3. The patellar reduction forceps according to claim 2, wherein the thickness of the locking nut and the limiting strip does not exceed the height of the spinous processes.

4. The patellar reduction forceps with the slidable guide tube according to claim 1, wherein the guide groove is arranged in a stepped manner, the guide groove is provided with a first stepped groove and a second stepped groove in sequence from the outer surface to the inner surface of the clamping part, the periphery of the lock nut is provided with an even number of polygons, and the lock nut is limited in the second stepped groove and is only in sliding fit; the connecting pipe is arranged in the first step groove and the second step groove in a penetrating mode and is in locking fit with the locking nut.