CN213641151U

CN213641151U - Guiding device of Kirschner wire

Info

Publication number: CN213641151U
Application number: CN202020374935.7U
Authority: CN
Inventors: 蒋维利; 牛国旗; 周功; 张井泉; 邓宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-07-09
Anticipated expiration: 2030-03-23

Abstract

The utility model provides a guider of ke shi needle, it includes rack (1), its characterized in that: be equipped with first arm lock (2) in rack (1) one end, be equipped with first guide cylinder (3) on first arm lock (2), it has sleeve (4) to wear to overlap on rack (1), wear to be equipped with pivot (5) on sleeve (4), be equipped with on pivot (5) and correspond complex gear (5 a) with rack (1), be equipped with handle (5 b) in pivot (5) one end, be equipped with on sleeve (4) and correspond complex block tongue (5 c) with rack (1), be equipped with second guide cylinder (6) on sleeve (4), it corresponds complex inner skleeve (7) to set up a set of and second guide cylinder (6) again. The utility model has the advantages of simple structure, convenient use, firm contact between the guide cylinder and the bone during use, and stable performance when effectively ensuring the insertion of the kirschner wire.

Description

Guiding device of Kirschner wire

The technical field is as follows:

the utility model belongs to the technical field of surgical instruments and specifically relates to a guiding device for a kirschner wire.

Background art:

the limb fracture is the most common disease in orthopedics emergency treatment, and is divided into open fracture and closed fracture. Most open fractures need emergency treatment for wound debridement treatment and fracture fixation and braking treatment, the fixation method mostly adopts kirschner wire fixation, and in addition, closed fractures with unobvious partial displacement and uncomplicated fracture degree generally adopt internal fixation of fracture closed reduction kirschner wires. Most of the existing fracture reduction kirschner wire fixing methods are free-hand operation or adopt corresponding traditional simple kirschner wire guiding devices, lead clothes need to be worn during the operation to be performed under the perspective of a C-shaped arm X-ray perspective machine, the direction is not easy to hold, the repeated perspective is needed, the repeated operation is performed, the soft tissue injury is serious, the kirschner wire easily enters the marrow cavity, and the like, so that the bone and soft tissue injury of a patient is serious, and the doctor and the patient are subjected to the defects of larger X-ray radiation and the like. The traditional kirschner wire guider mostly has unilateral guiding, although the problem of the needle inserting direction can be slightly improved, the specification is single, and the hand-holding direction is easy to change; the stability of the guider on the bone can not be ensured when in use.

The utility model has the following contents:

the utility model provides a guiding device of kirschner wire, which aims to overcome the defects in the prior art.

The application provides the following technical scheme:

the utility model provides a guider of ke shi needle, it includes the rack, its characterized in that: the gear rack clamping device is characterized in that a first clamping arm is arranged at one end of a rack, a first guide cylinder is arranged at one end of the first clamping arm, a sleeve is sleeved on the rack in a penetrating manner, a rotating shaft is arranged on the sleeve in a penetrating manner, a gear corresponding to the rack in a matched manner is arranged on the rotating shaft, a knob is arranged at one end of the rotating shaft, a clamping tongue corresponding to the rack in a matched manner is arranged on the sleeve, a second clamping arm is arranged on the sleeve, a second guide cylinder corresponding to the first guide cylinder is arranged at one end of the second clamping arm, and a group of inner sleeves corresponding to the second.

On the basis of the technical scheme, the following further technical scheme can be provided:

one end of the first guide cylinder is provided with a group of first sharp teeth, and one end of the second guide cylinder is provided with a group of second sharp teeth.

The group of inner sleeves comprises a plurality of inner sleeves with different inner hole diameters.

And a handle is arranged at the other end of the rack.

The first clamping arm and the second clamping arm are of arc structures.

The inner sleeve is connected and matched with the second guide cylinder in the existing connection mode, if the inner sleeve is provided with a convex point, the inner wall of the second guide cylinder is provided with a clamping groove which is correspondingly matched, and the second guide cylinder and the inner sleeve are connected in a clamping way through the convex point and the clamping groove; or the outer wall of the inner sleeve and the inner wall of the second guide cylinder are provided with corresponding matched threads which are connected with the second guide cylinder and the inner sleeve through threads; or the cylinder wall of the second guide cylinder is provided with a locking pin which is in locking fit with the outer cylinder of the inner sleeve in a penetrating way, and the second guide cylinder and the inner sleeve are connected together in a mode of locking the inner sleeve by the locking pin.

Utility model advantage:

the utility model has simple structure and convenient use, and is suitable for the needs of different body types and different limb fractures; the sharp teeth on the guide sleeve are designed to ensure that the guide sleeve is firmly contacted with the bone when in use, so that the guide stability when the Kirschner wire is inserted is ensured, and the operation quality when the Kirschner wire is inserted is effectively ensured; the device is suitable for Kirschner wires with different sizes by connecting the inner sleeves with different inner hole diameters in the second guide cylinder, so that the application range of the device is expanded; the arc structures of the first clamping arm and the second clamping arm can prevent soft tissues and other tissues from blocking the first clamping arm and the second clamping arm; the axes of the rack and the axes of the first guide sleeve and the second guide sleeve are distributed in parallel, so that the needle inserting direction of the Kirschner wire can be well determined, and excessive X-ray radiation is avoided.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is an enlarged view of fig. 1 at B.

The specific implementation mode is as follows:

as shown in fig. 1-3, a guiding device for a kirschner wire comprises a rack 1, an arc-shaped first clamping arm 2 fixedly connected to one end of the rack 1, and a cylindrical first guiding cylinder 3 fixedly connected to one end of the first clamping arm 2. A cylindrical handle 9 which is integrally formed with the rack 1 is arranged at the other end of the rack 1, and a group of anti-skid circular grooves 9a are also arranged on the outer wall of the handle 9.

The rack 1 between the first clamping arm 2 and the handle 9 is sleeved with a sleeve 4 which is square and provided with a square tube, the sleeve 4 is penetrated with a rotating shaft 5, the axis of the rotating shaft 5 is vertical to the axis of the sleeve 4, and the rotating shaft 5 in the sleeve 4 is fixedly sleeved with a gear 5a which is correspondingly matched with the rack 1. A knob 5b which is in linkage fit with the rotating shaft 5 is fixedly connected with one end part of the rotating shaft 5 outside the sleeve 4.

The rotating shaft 5 is driven to rotate by rotating the knob 5b, and then the gear 5a is driven to move on the rack 1, so that the sleeve 4 is driven to move on the rack 1.

One end of the sleeve 4 close to the handle 9 is hinged with a clamping tongue 10, one end of the clamping tongue 10 corresponds to the clamping tongue 10 matched with teeth on the rack 1, a torsion spring 10a is sleeved on a hinged shaft of the clamping tongue 10 hinged with the sleeve 4 in a penetrating manner, one end of the torsion spring 10a is in contact with the end part of the other end of the clamping tongue 10, and the other end of the torsion spring 10a is in contact with the inner wall of the sleeve 4.

When the end part of the other end of the latch 10 is not pressed, one end of the latch 10 is lapped on the teeth of the rack 1, the latch 10 moves along with the sleeve 4 when the sleeve 4 moves, and when the sleeve 4 moves to a proper position, one end of the latch 10 is clamped into the corresponding tooth groove on the rack 1, so that the sleeve 4 is prevented from moving towards the handle 9. When the sleeve 4 needs to move towards the handle 9, the end part of the other end of the clamping tongue 10 is pressed, so that one end of the clamping tongue 10 clamped into the tooth groove is lifted from the tooth groove, and the obstruction of the sleeve 4 moving towards the handle 9 is eliminated.

And a second clamping arm 6 is fixedly connected to the outer wall of the sleeve 4, and the second clamping arm 6 and the first clamping arm 2 have the same structure and are symmetrically distributed. One end of the second clamping arm 6 is fixedly connected with a cylindrical second guide cylinder 7, and the second guide cylinder 7 and the first guide cylinder 3 are coaxially distributed.

A group of inner sleeves 8 which can be respectively inserted into the second guide cylinder 7 are arranged, and the inner hole diameters of the inner sleeves 8 are different. A section of fish-scale friction layer 8a is arranged on the outer cylinder wall of one end part of each inner sleeve 8. A convex hull 8b is provided on the outer cylindrical wall of the inner sleeve 8 on the friction layer 8a side.

One end of the first guide cylinder 3 is uniformly provided with a group of first sharp teeth 3a, and one end of the second guide cylinder 7 is also uniformly provided with a group of second sharp teeth 7 a. A set of second tines 7a of the set of first tines 3a are oppositely disposed. An inner ring groove 7b which is distributed corresponding to the convex hull 8b is arranged on the inner cylinder wall of the end part of the other end of the second guide cylinder 7 close to the handle 9, and the inner ring groove 7b is an arc-shaped groove.

According to the diameter of the Kirschner wire to be inserted, the inner sleeve 8 with the corresponding hole diameter is selected, the inner sleeve 8 is inserted into the second guide cylinder 7 by holding the friction layer 8b by hand, and the inner sleeve 8 and the second guide cylinder 7 are connected and fixed when the convex hull is pressed into the inner ring groove. After use and when it is desired to remove the inner sleeve 8, the friction layer 8b can be held by hand to pull the inner sleeve 8 out of the second guide cylinder 7 with a large force.

In addition to the connection by pressing the convex hull into the inner ring groove, the outer wall of the inner sleeve and the inner wall of the second guide cylinder can be provided with corresponding matched threads, and the second guide cylinder and the inner sleeve are connected through threaded connection; or the inner sleeve 8 and the second guide cylinder 7 are connected together by the existing connecting modes, such as the mode that the inner sleeve is locked by the locking pin to connect the second guide cylinder and the inner sleeve together, and the like. Since these are prior art, no further remark is given.

The above-mentioned fixed connection is made by the conventional connection method in the prior art, such as welding.

The using method comprises the following steps:

during operation, firstly, performing manual fracture closed reduction (open fracture direct reduction), then, selecting proper positions on two sides of a fracture end as a Kirschner wire inserting position and a Kirschner wire withdrawing position after the fracture reduction is good under fluoroscopy, and fixedly connecting an inner sleeve with proper dimensions to an outer sleeve.

A hand holds the handle 9 with one hand to attach the first pointed tooth of the first guide cylinder to one side of the bone. Then the other hand drives the rotating shaft 5 to rotate through the rotating knob 5b, and then drives the gear 5a to move on the rack 1, so as to drive the sleeve 4 to move on the rack 1, further drive the second guide cylinder to approach the first guide cylinder, so that the second sharp tooth and the first sharp tooth clamp the two sides of the bone, and prick the bone from the two sides by a distance, so that the whole device can be relatively fixed on the bone, then the fracture end is subjected to perspective, the position close to the first guide cylinder and the second guide cylinder is good, and the connecting line of the end ends of the two guide sleeves just passes through the fracture center position, and then the Kirschner wire implantation can be carried out.

And (3) driving the kirschner wire into the fracture broken end by using an electric drill, enabling the kirschner wire to enter from the inner sleeve 8 of the second guide cylinder and come out from the first guide cylinder, and finishing the implantation of the kirschner wire. Then the end part of the other end of the clamping tongue is pressed, so that one end of the clamping tongue clamped in the tooth groove is tilted from the tooth groove, the sleeve 4 can be moved towards the handle 9 by manually pulling (or reversely rotating the rotating knob 5 b), the second sharp teeth and the first sharp teeth are separated from the bone, the whole device can be removed, and the operation is completed.

Claims

1. The utility model provides a guider of ke shi needle, it includes rack (1), its characterized in that: be equipped with first arm lock (2) in rack (1) one end, be equipped with first guide cylinder (3) in first arm lock (2) one end, it has sleeve (4) to wear to overlap on rack (1), wear to be equipped with pivot (5) on sleeve (4), be equipped with on pivot (5) and correspond complex gear (5 a) with rack (1), be equipped with knob (5 b) in pivot (5) one end, be equipped with on sleeve (4) and correspond complex block tongue (10) with rack (1), be equipped with second arm lock (6) on sleeve (4), be equipped with second guide cylinder (7) corresponding with first guide cylinder (3) in second arm lock (6) one end, it corresponds complex inner skleeve (8) to set up a set of and second guide cylinder (7) again.

2. A k-wire guide as claimed in claim 1, wherein: one end of the first guide cylinder (3) is provided with a group of first sharp teeth (3 a), and one end of the second guide cylinder (7) is provided with a group of second sharp teeth (7 a).

3. A k-wire guide as claimed in claim 1, wherein: the group of inner sleeves (8) comprises a plurality of inner sleeves (8) with different inner hole diameters.

4. A k-wire guide as claimed in claim 1, wherein: and a handle (9) is arranged at the other end of the rack (1).

5. A k-wire guide as claimed in claim 1, wherein: the first clamping arm (2) and the second clamping arm (6) are arc-shaped structures.