CN215605968U

CN215605968U - Kirschner wire spreader

Info

Publication number: CN215605968U
Application number: CN202122002989.8U
Authority: CN
Inventors: 吴云峰
Original assignee: Fourth Affiliated Hospital of Anhui Medical University
Current assignee: Fourth Affiliated Hospital of Anhui Medical University
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-25
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a Kirschner wire distractor which comprises a left Kirschner wire and a right Kirschner wire, wherein a universal ball is arranged on each Kirschner wire, and a universal ball type rotating mechanism which takes a ball center as a center and is convenient for adjusting the angle of the Kirschner wires inserted into bones is arranged on the outer side of each universal ball. The device also comprises a guide mechanism which is arranged between the two rotating mechanisms and is used for guiding left and right, and a threaded push-pull mechanism which drives the rotating mechanisms at two sides to move left and right. The Kirschner wire is installed on universal ball, can be rotatory round the spherical shell, changes the angle, uses the centre of sphere of universal ball as the center here, and the fulcrum ratio is nearer, for the swing on the market, and the arm of force is long, poor stability, and the arm of force here is short, and stability is better, and the structure is compacter simple, and the first fastening knob of unscrewing, alright in order to adjust the angle of universal ball, changes the insertion angle of Kirschner wire.

Description

Kirschner wire spreader

Technical Field

The utility model relates to the field of spreading of Kirschner wires, in particular to a Kirschner wire spreader.

Background

In the comminuted operation of the cadre of limbs, need to pass through the spreader, strut two bones, so that the operation is corrected the shortening and is shifted, conveniently maintain and reset, the installation steel sheet, current spreader, not only be used for the bone on same straight line to strut, also be applicable to not being on a straight line, this is to strut the position and can swing rotatoryly, function abundance like this, but, also, there is a shortcoming, that is exactly that the structure is complicated, the stability is poor, strut the dynamics is little, and strut on a straight line in reality more, only need adjust the ke shi needle inclination slightly can, therefore, how to reduce the complexity of spreader, improve the dynamics of strutting, be the problem that this field of technical staff urgently need to solve.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a k-wire distractor to solve the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a ke shi needle struts ware, includes two ke shi needles about, install universal ball on the ke shi needle, and the outside of universal ball is provided with the universal ball formula rotary mechanism who uses the centre of sphere as the convenient adjustment ke shi needle of center and insert the bone angle.

The device also comprises a guide mechanism which is arranged between the two rotating mechanisms and is used for guiding left and right, and a threaded push-pull mechanism which drives the rotating mechanisms at two sides to move left and right.

Preferably, the rotating mechanism comprises a spherical shell which is sleeved on the outer side of the universal ball and is provided with openings at the upper end and the lower end, and the outer side of the spherical shell is in threaded connection with a butterfly-shaped first fastening knob of which the inner end can tightly support the universal ball.

Preferably, the inner end of the first fastening knob is in a circular arc shape attached to the universal ball so as to increase the contact area.

Preferably, the adjusting mechanism is arranged between the universal ball and the Kirschner wire and is convenient for replacing and moving the Kirschner wire up and down.

Preferably, the adjusting mechanism comprises a guide hole which is formed in the universal ball and is used for inserting the kirschner wire into the universal ball and penetrates through the universal ball from top to bottom, a supporting cylinder which is sleeved on the kirschner wire is fixed to the outer end of the guide hole, a movable gap is reserved between the supporting cylinder and the opening of the ball shell, and the supporting cylinder is in threaded connection with a second fastening knob of which the butterfly-shaped inner end abuts against the kirschner wire.

Preferably, the guide mechanism comprises a guide rod and a matched sleeve which are respectively fixed on the opposite ends of the two spherical shells, and the guide rod can move telescopically along the sleeve.

Preferably, the push-pull mechanism comprises push plates fixed on the upper ends of the guide rod and the sleeve in the opposite side direction, the opposite ends of the two push plates are provided with threaded cylinders with opposite openings, the two threaded cylinders are connected through a bidirectional threaded rod, and the middle of the bidirectional threaded rod is provided with a rotary rod facilitating rotary force application.

Preferably, the middle part of the bidirectional threaded rod is provided with a rotating hole for inserting the rotating rod, and two ends of the bidirectional threaded rod are fixed with anti-slip balls for preventing slipping.

Compared with the prior art, the utility model has the beneficial effects that:

1. the Kirschner wire is arranged on the universal ball and can rotate around the ball shell to change the angle, the center of the universal ball is taken as the center, the fulcrum is closer, and compared with the swinging on the market, the Kirschner wire has the advantages of long force arm, poor stability, short force arm, better stability and more compact and simple structure, and the angle of the universal ball can be adjusted by loosening the first fastening knob to change the insertion angle of the Kirschner wire;

2. the Kirschner wire can be replaced or pulled up and down to change the position by unscrewing the second fastening knob, so that the position is convenient to adjust, and different Kirschner wires can be replaced;

3. when in opening, the rotating rod is rotated, the two threaded cylinders are driven by the bidirectional threaded rod to mutually approach or separate, so that the opening or the closing is realized, and meanwhile, the two threaded cylinders synchronously approach or separate, so that the speed is higher;

4. the guide rod is matched with the sleeve, the moving stability is guaranteed, the left and right movement can be carried out along a straight line, and the stability is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is an isometric view of the present invention;

fig. 5 is an exploded view of the present invention.

In the figure: 1. a Kirschner wire; 11. a universal ball; 12. a spherical shell; 13. a first fastening knob; 14. a support cylinder; 15. a second fastening knob; 2. a guide bar; 21. a sleeve; 3. pushing the plate; 31. a threaded barrel; 32. a bidirectional threaded rod; 33. rotating the rod; 34. the ball is prevented from falling off.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a kirschner wire spreader, which comprises: the utility model provides a kirschner wire struts ware, includes two kirschner wires 1 about, installs universal ball 11 on the kirschner wire 1, and the outside of universal ball 11 is provided with the universal ball formula rotary mechanism who uses the centre of sphere as the convenient adjustment kirschner wire 1 of center and insert the bone angle.

The rotating mechanism comprises a spherical shell 12 which is sleeved on the outer side of the universal ball 11 and is matched with the universal ball, wherein the upper end and the lower end of the spherical shell 12 are both provided with openings, and the outer side of the spherical shell 12 is in threaded connection with a butterfly-shaped first fastening knob 13, the inner end of the butterfly-shaped first fastening knob can tightly support the universal ball 11. The first fastening knob 13 is tightly abutted against the universal ball 11 to realize fixation, wherein the first fastening knob 13 is butterfly-shaped, so that force application and rotation are facilitated, and certainly, in order to pursue higher fastening strength, the lever principle can be utilized by means of a vice or a rod-shaped tail part. The inner end of the first fastening knob 13 is in the shape of a circular arc fitted to the universal ball 11 to increase the contact area. The contact area is increased, the fixing effect is better, the diameter of the first fastening knob 13 can be made larger, the fixing force is larger, and meanwhile, the threaded block matched with the first fastening knob 13 can be arranged on the spherical shell 12 to increase the length of threaded connection.

The adjusting mechanism comprises a guide hole which is formed in the universal ball 11 and is used for inserting the Kirschner wire 1 to penetrate through up and down, a supporting cylinder 14 which is sleeved on the Kirschner wire 1 is fixed at the outer end of the guide hole, a movable gap is reserved between the supporting cylinder 14 and the opening of the spherical shell 12, and a butterfly-shaped second fastening knob 15 with the inner end abutting against the Kirschner wire 1 is in threaded connection with the supporting cylinder 14. The second fastening knob 15 clamps the kirschner wire 1 to realize fixation, and loosening is convenient for replacing different thicknesses and moving up and down.

The adjusting mechanism is arranged between the universal ball 11 and the Kirschner wire 1 and is convenient for replacing and moving the Kirschner wire 1 up and down. This is convenient for moving the kirschner wire 1 up and down, and simultaneously, is also convenient for replacing the kirschner wires 1 with different thicknesses. The guide mechanism comprises a guide rod 2 and a matched sleeve 21 which are respectively fixed on the opposite ends of the two spherical shells 12, and the guide rod 2 can move telescopically along the sleeve 21. The guide rod 2 is inserted in the sleeve 21 to realize guiding, and the section of the guide rod 2 can be polygonal, so that the stability is better.

The device also comprises a guide mechanism which is arranged between the two rotating mechanisms and is used for guiding left and right, and a threaded push-pull mechanism which drives the rotating mechanisms at two sides to move left and right. The screw thread type thrust is large, and the bone can be better propped open. And the guide mechanism avoids the relative rotation of the two rotating mechanisms and performs left-right movement guide.

Push-and-pull mechanism is including fixing the push pedal 3 that carries on the back one side upwards in guide bar 2 and sleeve 21 upper end, and the one end that two push pedal 3 are relative all is provided with the opposite screw thread section of thick bamboo 31 of the relative screw thread turning direction of opening, connects through two-way threaded rod 32 between two screw thread section of thick bamboo 31, and the mid-mounting of two-way threaded rod 32 has the swing arm 33 of convenient rotatory application of force. Here, the two screw cylinders 31 are rotated in opposite directions, and the two screw cylinders 31 are urged toward or away from each other by the rotation of the two-way screw rod 32, and the screw directions of both ends of the two-way screw rod 32 are also opposite to each other, corresponding to the screw cylinders 31. A rotation hole for inserting the rotation rod 33 is formed in the middle of the bidirectional threaded rod 32, and anti-slip balls 34 for preventing slipping are fixed at two ends of the bidirectional threaded rod 32. Can increase the arm of force with swing rod 33 pull to one side like this, rotatory dynamics is bigger, and simultaneously, the distance space of two-way threaded rod 32 to sleeve 21 that needs is also little, and the stability to the push-and-pull of push pedal 3 is better like this. The utility model provides a ware struts in market sets up nut and slide cartridge on the lead screw, rotates the nut, and the slide cartridge that promotes installation kirschner wire removes, and this rotation in-process produces frictional force between the two, and the resistance is also big, also is inconvenient for rotatory.

Here, the universal ball 11, the ball housing 12, the first fastening knob 13, the second fastening knob 15, the guide bar 2, the sleeve 21, the push plate 3, the threaded cylinder 31, the bidirectional threaded rod 32, and the rotary bar 33 may be made of an aluminum alloy, and have high strength and light weight, or may be made of another material having high strength and light weight.

The working principle is as follows: the Kirschner wire 1 is installed on the universal ball 11, can rotate around the spherical shell 12, changes the angle, uses the centre of sphere of the universal ball 11 as the center here, and the fulcrum is nearer, and for the swing on the market, the arm of force is long, poor stability, and the arm of force here is short, and stability is better, and the structure is compacter simple, and the first fastening knob 13 of unscrewing, alright in order to adjust the angle of universal ball 11, change the insertion angle of Kirschner wire 1. The second fastening knob 15 is unscrewed, so that the Kirschner wire 1 can be replaced or the position can be changed by pulling up and down, thereby facilitating the position adjustment and replacing different Kirschner wires 1. When the two-way threaded rod is unfolded, the rotating rod 33 is rotated, the two threaded cylinders 31 are driven by the two-way threaded rod 32 to be close to or far away from each other, so that unfolding or closing is achieved, and meanwhile, the two threaded cylinders 31 are close to or far away from each other synchronously, and the speed is higher. The guide rod 2 is matched with the sleeve 21, so that the moving stability is guaranteed, the left and right movement can be realized along a straight line, and the stability is better.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a ke shi needle struts ware, includes about two ke shi needles (1), its characterized in that: the Kirschner wire (1) is provided with a universal ball (11), and the outer side of the universal ball (11) is provided with a universal ball type rotating mechanism which takes a ball center as a center and is convenient for adjusting the angle of the Kirschner wire (1) inserted into the bone;

2. The k-wire distractor of claim 1, wherein: the rotating mechanism comprises a spherical shell (12) which is sleeved on the outer side of the universal ball (11) and is provided with openings at the upper end and the lower end, and the outer side of the spherical shell (12) is in threaded connection with a butterfly-shaped first fastening knob (13) of which the inner end can abut against the universal ball (11).

3. A k-wire distractor as claimed in claim 2, wherein: the inner end of the first fastening knob (13) is in a circular arc shape attached to the universal ball (11) so as to increase the contact area.

4. A k-wire distractor according to claim 3 wherein: the adjusting mechanism is arranged between the universal ball (11) and the Kirschner wire (1) and is convenient to replace and move the Kirschner wire (1) up and down.

5. The k-wire distractor of claim 4, wherein: the adjusting mechanism comprises a guide hole which is formed in the universal ball (11) and is used for inserting the Kirschner wire (1) and penetrates up and down, the outer end of the guide hole is fixedly provided with a supporting cylinder (14) which is sleeved on the Kirschner wire (1), a movable gap is reserved between the supporting cylinder (14) and the opening of the ball shell (12), and the supporting cylinder (14) is connected with a second fastening knob (15) with a butterfly-shaped inner end abutting against the Kirschner wire (1) in a threaded manner.

6. The k-wire distractor of claim 5, wherein: the guide mechanism comprises a guide rod (2) and a matched sleeve (21), wherein the guide rod (2) and the matched sleeve (21) are respectively fixed at the opposite ends of the two spherical shells (12), and the guide rod (2) can move telescopically along the sleeve (21).

7. The k-wire distractor of claim 6, wherein: push-and-pull mechanism is including fixing in guide bar (2) and sleeve (21) upper end back of the body ascending push pedal (3) of a side, and the one end that two push pedal (3) are relative all is provided with the opposite screw thread of opening and revolves to opposite screw thread section of thick bamboo (31), connects through two-way threaded rod (32) between two screw thread section of thick bamboo (31), and the mid-mounting of two-way threaded rod (32) has swing arm (33) of convenient rotatory application of force.

8. The k-wire distractor of claim 7, wherein: the middle part of the bidirectional threaded rod (32) is provided with a rotating hole for inserting the rotating rod (33), and two ends of the bidirectional threaded rod (32) are fixed with anti-slip balls (34) for preventing slipping.