Bending device capable of controlling rotation direction

Abstract

The utility model relates to the technical field of medical instruments, in particular to a bending device capable of controlling the rotation direction, which comprises a vertical section and a bending section fixedly connected to the end part of the vertical section, the outer wall of the bending section is provided with a through hole, the inner wall of the vertical section is fixedly connected with a rotating sleeve, the inner side of the rotating sleeve is rotatably connected with a threaded sleeve, and the threaded sleeve is provided with a through hole. The inner wall of the threaded sleeve is in threaded connection with a screw rod, the lower end face of the threaded sleeve is fixedly connected with a connecting cylinder, the rotary knob drives the threaded sleeve to rotate on the inner side of the rotating sleeve through the connecting cylinder, and when the threaded sleeve rotates, due to the threaded connection of the screw rod and the threaded sleeve, the screw rod is driven to move upwards, and the pressing block is further driven to move upwards. The elastic intramedullary nail is pressed and fixed in the bending device through the pressing block, so that the anti-rotation effect is achieved, the purpose of rotating the elastic intramedullary nail can be achieved by swinging the bending device, the device is simple in structure and convenient to operate, and the bending operation of the elastic intramedullary nail achieves the ideal effect.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a bender capable of controlling the rotation direction. Background Art

[0002] With the continuous improvement of new materials and technologies, more and more children's fractures are treated with minimally invasive surgery, especially for fractures of long bones in children's limbs. Intramedullary fixation technology has been widely accepted. Clinical data show that children's elastic intramedullary nails are the best method for treating children's long bone fractures. At present, children's elastic intramedullary nail technology has become the mainstream technology for the treatment of children's long bone fractures, and has been used and promoted in many countries around the world. The principle of elastic intramedullary nails is to insert two elastic intramedullary nails symmetrically from the epiphysis, use the good elastic restoring force of titanium alloy or stainless steel to act on the bone, and convert it into thrust and pressure through the three contact points in the medullary cavity, thereby reducing the fracture;

[0003] After the elastic intramedullary nail is inserted, it must be cut off and bent at the end to stick to the bone surface as much as possible. Excessive bending may irritate the soft tissue, affect the functional exercise of the adjacent joints, and ultimately leave functional disorders. When the conventional bender in the prior art is used, the elastic intramedullary nail only passes through the end of the bender and cannot fix the elastic intramedullary nail, resulting in the inability to control the rotation of the elastic intramedullary nail and fail to achieve the best effect. Utility Model Content

[0004] The utility model aims to provide a bender capable of controlling the rotation direction, which has the characteristics of simple structure and convenient operation and enables the bending operation of the elastic intramedullary nail to achieve an ideal effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bender with controllable rotation direction, comprising a vertical section and a bending section fixedly connected to the end of the vertical section, the outer wall of the bending section is provided with a through hole, the inner wall of the vertical section is fixedly connected with a rotating sleeve, the inner side of the rotating sleeve is rotatably connected with a threaded sleeve, the inner wall of the threaded sleeve is threadedly connected with a screw, the lower end surface of the threaded sleeve is fixedly connected with a connecting tube, one end of the screw penetrates the threaded sleeve and extends to the interior of the connecting tube, the other end of the connecting tube extends to the outside and below of the vertical section and is fixedly connected with a knob, and the other end of the screw is fixedly connected with a clamping block.

[0006] In order to facilitate the bending of the elastic intramedullary nail, as a preferred bender of the utility model with controllable rotation direction, the vertical section and the bending section are of an integrated structure and the connection is at an angle of 150-160 degrees.

[0007] In order to match the elastic intramedullary nail that passes through obliquely, as a preferred bender with controllable rotation direction of the utility model, the upper end face of the clamping block is an inclined surface parallel to the bending section and the upper end face of the inclined surface is fixedly connected with a plurality of evenly distributed anti-slip teeth.

[0008] In order to limit the screw, as a preferred bender that can control the rotation direction of the utility model, the inner wall of the vertical section is provided with two symmetrically arranged sliding grooves, and the outer wall of the screw is fixedly connected with two symmetrically arranged limiting rods, and the two limiting rods are respectively slidably connected to the two sliding grooves.

[0009] In order to increase the friction force of the outer wall of the knob, as a preferred embodiment of the bender capable of controlling the rotation direction of the utility model, the outer wall of the knob is provided with a plurality of evenly distributed ridges.

[0010] In order to improve the friction force of the outer wall of the vertical section, as a preferred bender capable of controlling the rotation direction of the utility model, a plurality of evenly distributed friction particles are arranged on the lower half of the outer wall of the vertical section.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] When the bender is in use, the elastic intramedullary nail is passed through the port of the bending section and out through the perforation, and then the knob is turned. The knob drives the threaded sleeve to rotate inside the rotating sleeve through the connecting tube. When the threaded sleeve rotates, the screw rod and the threaded sleeve are threadedly connected, thereby driving the screw rod to move upward, and further driving the clamping block to move upward, so that the elastic intramedullary nail is pressed and fixed inside the bender through the clamping block, thereby achieving an anti-rotation effect. The purpose of rotating the elastic intramedullary nail can be achieved by swinging the bender. The device has a simple structure and is easy to operate, so that the bending operation of the elastic intramedullary nail can achieve an ideal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall external structure diagram of the utility model;

[0014] Figure 2 This is the overall cross-sectional structural diagram of the utility model;

[0015] Figure 3 For this utility model Figure 2 Enlarged structural diagram of part a in the middle.

[0016] In the figure: 1, vertical section; 2, bending section; 3, perforation; 4, rotating sleeve; 5, threaded sleeve; 6, screw; 7, connecting tube; 8, knob; 9, clamping block; 10, anti-slip teeth; 11, friction particles; 12, slide groove; 13, limit rod. DETAILED DESCRIPTION

[0017] See also Figures 1 to 3 A bender with controllable rotation direction comprises a vertical section 1 and a bending section 2 fixedly connected to the end of the vertical section 1, a through hole 3 is opened on the outer wall of the bending section 2, a rotating sleeve 4 is fixedly connected to the inner wall of the vertical section 1, a threaded sleeve 5 is rotatably connected to the inner side of the rotating sleeve 4, a screw 6 is threadedly connected to the inner wall of the threaded sleeve 5, a connecting tube 7 is fixedly connected to the lower end surface of the threaded sleeve 5, one end of the screw 6 passes through the threaded sleeve 5 and extends to the inside of the connecting tube 7, the other end of the connecting tube 7 extends to the outside and below of the vertical section 1 and is fixedly connected to a knob 8, and the other end of the screw 6 is fixedly connected to a pressing block 9.

[0018] In this embodiment: when the bender is in use, the elastic intramedullary nail is passed through the port of the bending section 2 and out through the perforation 3, and then the knob 8 is turned. The knob 8 drives the threaded sleeve 5 to rotate inside the rotating sleeve 4 through the connecting tube 7. When the threaded sleeve 5 rotates, the screw rod 6 and the threaded sleeve 5 are threadedly connected, thereby driving the screw rod 6 to move upward, and further driving the clamping block 9 to move upward, so that the elastic intramedullary nail is pressed and fixed inside the bender through the clamping block 9, thereby achieving the anti-rotation effect. The purpose of rotating the elastic intramedullary nail can be achieved by swinging the bender. The device has a simple structure and is easy to operate, so that the bending operation of the elastic intramedullary nail can achieve an ideal effect.

[0019] As a technical optimization solution of the utility model, the vertical section 1 and the bending section 2 are an integrated structure and the connection is at an angle of 150-160 degrees.

[0020] In this embodiment, the vertical section 1 and the bending section 2 are an integrated structure and the connection is at an angle of 150-160 degrees, which facilitates the bending of the elastic intramedullary nail.

[0021] As a technical optimization solution of the utility model, the upper end surface of the pressing block 9 is an inclined surface parallel to the bending section 2, and a plurality of evenly distributed anti-slip teeth 10 are fixedly connected to the upper end surface of the inclined surface.

[0022] In this embodiment: the upper end surface of the clamping block 9 is an inclined surface parallel to the bending section 2, so as to remain parallel to the elastic intramedullary nail passing through the perforation 3, which is convenient for clamping and fixing. By providing anti-slip teeth 10, the friction between the clamping block 9 and the elastic intramedullary nail is increased, thereby improving the fixing effect.

[0023] As a technical optimization solution of the utility model, the inner wall of the vertical section 1 is provided with two symmetrically arranged slide grooves 12, and the outer wall of the screw rod 6 is fixedly connected with two symmetrically arranged limit rods 13, and the two limit rods 13 are slidably connected with the two slide grooves 12 respectively.

[0024] In this embodiment, the two limiting rods 13 are slidably connected to the two sliding grooves 12 respectively, and the limiting rod 13 is fixedly connected to the screw rod 6, so as to limit the screw rod 6 so that it can only move in the vertical direction.

[0025] As a technical optimization solution of the present invention, the outer wall of the knob 8 is provided with a plurality of evenly distributed ridges.

[0026] In this embodiment: the outer wall of the knob 8 is provided with a plurality of evenly distributed ridges, which increase the friction of the outer wall of the knob 8 and facilitate twisting and rotation.

[0027] As a technical optimization solution of the present invention, a plurality of evenly distributed friction particles 11 are arranged on the lower half of the outer wall of the vertical section 1 .

[0028] In this embodiment: a plurality of evenly distributed friction particles 11 are arranged on the lower half of the outer wall of the vertical section 1 to increase the friction force of the outer wall of the vertical section 1 and facilitate the holding and operation of the bender.

[0029] Working principle: When the bender is in use, the elastic intramedullary nail is passed through the port of the bending section 2 and out through the perforation 3, and then the knob 8 is turned. The knob 8 drives the threaded sleeve 5 to rotate inside the rotating sleeve 4 through the connecting tube 7. When the threaded sleeve 5 rotates, the screw rod 6 and the threaded sleeve 5 are threadedly connected, thereby driving the screw rod 6 to move upward, and further driving the clamping block 9 to move upward, so that the elastic intramedullary nail is pressed and fixed inside the bender through the clamping block 9, thereby achieving an anti-rotation effect. The purpose of rotating the elastic intramedullary nail can be achieved by swinging the bender.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bender capable of controlling the direction of rotation, comprising a vertical section (1) and a bending section (2) fixedly connected to the end of the vertical section (1), characterized in that: The outer wall of the bending section (2) is provided with a through hole (3); the inner wall of the vertical section (1) is fixedly connected to a rotating sleeve (4); the inner side of the rotating sleeve (4) is rotatably connected to a threaded sleeve (5); the inner wall of the threaded sleeve (5) is threadedly connected to a screw rod (6); the lower end surface of the threaded sleeve (5) is fixedly connected to a connecting tube (7); one end of the screw rod (6) passes through the threaded sleeve (5) and extends to the inside of the connecting tube (7); the other end of the connecting tube (7) extends to the outside and below of the vertical section (1) and is fixedly connected to a knob (8); the other end of the screw rod (6) is fixedly connected to a pressing block (9).

2. A bender with controllable rotation direction according to claim 1, characterized in that: The vertical section (1) and the bent section (2) are of an integrated structure and the connection portion forms an angle of 150-160 degrees.

3. A bender with controllable rotation direction according to claim 1, characterized in that: The upper end surface of the pressing block (9) is an inclined surface parallel to the bending section (2), and a plurality of evenly distributed anti-slip teeth (10) are fixedly connected to the upper end surface of the inclined surface.

4. The bender with controllable rotation direction according to claim 1, characterized in that: The inner wall of the vertical section (1) is provided with two symmetrically arranged sliding grooves (12), and the outer wall of the screw rod (6) is fixedly connected with two symmetrically arranged limiting rods (13), and the two limiting rods (13) are respectively slidably connected with the two sliding grooves (12).

5. The bender with controllable rotation direction according to claim 1, characterized in that: The outer wall of the knob (8) is provided with a plurality of evenly distributed ridges.

6. The bender with controllable rotation direction according to claim 1, characterized in that: A plurality of evenly distributed friction particles (11) are arranged on the lower half of the outer wall of the vertical section (1).

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