CN204744365U - External fixation frame can multi -direction multi -angle adjusted anchor clamps of threading a needle - Google Patents

Abstract

The utility model discloses an external fixation frame can multi -direction multi -angle adjusted anchor clamps of threading a needle, including upper and lower slide bar, upper and lower slider, controlling slide bar and ke shi needle clamping device, upper and lower slide bar is equipped with the screw hole that runs through and adjusts the locking bolt through upper and lower slide bar and fix on the external fixation frame for the cross section is square cuboid slide bar on the upper and lower slide bar, sliding block suit is on upper and lower slide bar from top to bottom, being equipped with the through -hole of two ascending mutually orthogonals of horizontal wind on the upper and lower slider, controlling the slide bar and pass one of them through -hole, the both ends of another through -hole are equipped with respectively controls slide bar regulation fixing bolt and upper and lower slider regulation locking bolt. The utility model discloses have the regulation of no pole position and arbitrary angle, can finely tune, successfully overcome the hole site blind area of the upper and lower immobilization in the external fixation frame, overcome the follow -up ke shi needle and the problem of fixed loop nonparallel from top to bottom, can realize that the regulation of four degrees of freedom on the keshi needle is fixed.

Description

A Needle Threading Fixture for External Fixator that Can Be Adjusted in Multiple Directions and Multiple Angles

technical field

The utility model relates to the field of medical equipment, more specifically, relates to a multi-direction and multi-angle adjustable needle-piercing jig for an external fixator used for orthopedic surgery correction and fracture reduction.

Background technique

When treating fractures in clinical surgery, the use of fixation devices is essential. External fixation is mainly to fix broken bones outside the human body through mechanical devices, which can be used for minimally invasive treatment. The commonly used external fixation devices are mainly Ilizarov external fixators. The Ilizarov technique uses multiplanar thin Kirschner wires to penetrate the limb and bone tissue and connect to a ring fixator. Dr. Taylor improved the Ilizarov external fixation system by connecting six telescopic extension rods obliquely to the proximal and distal rings, and they can rotate freely at the connection point. As long as the length of one of the extension rods is adjusted, one ring will Change position relative to another ring. The Taylor frame is a six-degree-of-freedom parallel mechanism of the standard Stewart platform, which has the characteristics of high rigidity, strong bearing capacity, no accumulation of position errors, high stability, and high precision. During the operation, the Kirschner wire is generally fixed to the appropriate fracture position of the human body, and the needle threading fixture is used to fix the Kirschner wire. The upper and lower rings of the human body fracture and the external fixator are fixedly connected to each other. However, in the actual operation, the position of the perforation is not symmetrical, and the angle of the perforation is not completely parallel to the corresponding fixing ring. During the operation, there is an error in the angle or position of the Kirschner wire inserted into the human body, which corresponds to the position of the upper and lower fixing rings of the external fixator. Not in the corresponding hole position, because the position of the hole position on the upper and lower fixing rings of the external fixator is fixed, there is a certain blind area, and a small error will bring great pain to the patient. When using Kirschner wires to fix the external fixation device on the bone, due to the different surgical skills of doctors, the fixation pins fixed on the same side of the bone are not completely parallel, which is not conducive to the installation of the external fixation device and brings difficulties to the operation. .

Utility model content

The purpose of the utility model is to overcome the deficiency of the existing needle-piercing jig for external fixation, and provide a needle-piercing jig for external fixation that can be adjusted in multiple directions and angles, which can improve the safety line of surgery and reduce the difficulty of surgery. Fine-tuning the fixation and overcoming the problem of blind holes and non-parallel Kirschner wires can not only improve the accuracy and safety of clinical fracture reduction, but also reduce the operation intensity of clinicians and greatly improve the success rate of operations.

The utility model achieves the above-mentioned purpose through the following technical solutions: a needle threading jig for an external fixator that can be adjusted in multiple directions and angles, including an up and down sliding bar, an up and down sliding block, a left and right sliding bar and a Kirschner wire clamping device. The upper and lower sliding rods are cuboid sliding rods with a square cross section. The upper and lower sliding rods are provided with threaded holes that are perpendicular to the direction of the cross section and run through the upper and lower sliding rods. The bottom of the upper and lower sliding rods is fixed by adjusting the locking bolts of the upper and lower sliding rods On the external fixation frame, the upper and lower sliding rods can adjust the angle of the upper and lower sliding rods relative to the external fixing frame through the upper and lower sliding rod adjustment locking bolts; The upper and lower sliders slide up and down; the upper and lower sliders are provided with two mutually orthogonal through holes in the horizontal wind direction, the left and right sliders pass through one of the through holes, and the two ends of the other through hole are respectively set There are left and right slider adjustment fixing bolts for fixing the left and right sliders and up and down slider adjustment locking bolts for fixing the up and down sliders on the up and down sliders.

Further, the Kirschner wire clamping device includes a sleeve and a Kirschner wire adjustment locking bolt, the side of the sleeve is connected to one end of the left and right slide bars, and the Kirschner wire passes through the sleeve and is adjusted and locked by the Kirschner wire. Screws are adjusted and fixed.

Further, the Kirschner wire clamping device includes a V-shaped clamping groove device and a Kirschner wire adjustment lock nut, and one end of the left and right slide rods is provided with an external thread matched with the Kirschner wire adjustment lock nut, The left and right sliding rods pass through the V-shaped clamping groove device and clamp the Kirschner wire through the Kirschner wire adjusting lock nut.

The beneficial effect of the utility model is that: the utility model has infinite position and arbitrary angle adjustment, can be fine-tuned, and successfully overcomes the blind spot of the upper and lower fixed holes in the external fixator, and overcomes that the subsequent Kirschner wires are not parallel to the upper and lower fixing rings It can realize the adjustment and fixation of four degrees of freedom of the Kirschner wire, so that the Kirschner wire can be inserted into the bone tissue at any angle and position, which improves the accuracy and safety of clinical fracture reduction, and reduces the operation intensity of clinicians, greatly improving the success rate of surgery.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of an external fixator threading jig that can be adjusted in multiple directions and angles according to the present invention.

Fig. 2 is a structural schematic diagram of Embodiment 2 of an external fixator threading jig that can be adjusted in multiple directions and angles according to the present invention.

Fig. 3 is a schematic diagram of the composition of the Taylor frame device and the needle threading jig in the prior art.

Fig. 4 is a schematic diagram of the assembly composition of the lower fixing ring with Embodiment 1 and Embodiment 2.

In the figure, 1-traditional needle threading fixture, 2-Kirschner wire, 3-connecting rod, 4-lower fixing ring, 5-upper fixing ring, 6-up and down sliding rod, 7-up and down sliding slider, 8-left and right sliding rod , 9-up and down slider adjustment locking bolts, 10-left and right slider adjustment fixing bolts, 11-up and down slider adjustment locking bolts, 12-sleeve, 13-Kirschner wire adjustment locking bolts, 14-V-shaped clamp Tight groove device, 15-K-wire adjustment lock nut.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 3, the Taylor frame device and the needle threading fixture in the prior art include a traditional needle threading fixture 1, a connecting rod 3, a lower fixing ring 4 and an upper fixing ring 5, and the lower fixing ring 4 and the upper fixing ring 5 are connected in parallel through six The connecting rod 3 is connected, the traditional needle threading fixture 1 is fixed on the upper fixing ring 4 and the lower fixing ring 5, and the Kirschner wire 2 is fixed on the traditional needle threading fixture 1.

Embodiment one:

As shown in Figure 1, a needle threading jig for an external fixator that can be adjusted in multiple directions and angles includes an up and down slide bar 6, an up and down slide bar 7, a left and right slide bar 8 and a Kirschner wire clamping device, the up and down slide bar 6 is a rectangular parallelepiped slide bar with a square cross section. The upper and lower slide bar 6 is provided with a threaded hole perpendicular to the direction of the cross section and passing through the upper and lower slide bar 6. The bottom of the upper and lower slide bar 6 adjusts the locking bolt through the upper and lower slide bar. 11 is fixed on the external fixing frame, and the up and down sliding rod 6 can adjust the angle of the up and down sliding rod 6 relative to the external fixing frame by adjusting the locking bolt 11; the up and down sliding slider 7 is set on the up and down sliding on the rod 6 and can slide up and down along the upper and lower sliding rods 6; the upper and lower sliders 7 are provided with two mutually orthogonal through holes in the horizontal wind direction, and the left and right sliding rods 8 pass through one of the through holes, so The two ends of another through hole are respectively provided with the left and right slide bar adjustment fixing bolts 10 for fixing the left and right slide bars 8 and the up and down slide adjustment locking bolts 9 for fixing the up and down slide bars 7 on the up and down slide bars 6 .

The Kirschner wire clamping device includes a sleeve 12 and a Kirschner wire adjusting locking bolt 13, the side of the sleeve 12 is connected to one end of the left and right slide bars 8, and the Kirschner wire 2 passes through the sleeve 12 and passes through the Kirschner wire Adjust the locking bolt 13 to adjust and fix.

Embodiment two:

As shown in Figure 2, a needle threading fixture for an external fixator that can be adjusted in multiple directions and angles includes an up and down slide bar 6, an up and down slide bar 7, a left and right slide bar 8 and a Kirschner wire clamping device, the up and down slide bar 6 is a rectangular parallelepiped slide bar with a square cross section. The upper and lower slide bar 6 is provided with a threaded hole perpendicular to the direction of the cross section and passing through the upper and lower slide bar 6. The bottom of the upper and lower slide bar 6 adjusts the locking bolt through the upper and lower slide bar. 11 is fixed on the external fixing frame, and the up and down sliding rod 6 can adjust the angle of the up and down sliding rod 6 relative to the external fixing frame by adjusting the locking bolt 11; the up and down sliding slider 7 is set on the up and down sliding on the rod 6 and can slide up and down along the upper and lower sliding rods 6; the upper and lower sliders 7 are provided with two mutually orthogonal through holes in the horizontal wind direction, and the left and right sliding rods 8 pass through one of the through holes, so The two ends of another through hole are respectively provided with the left and right slide bar adjustment fixing bolts 10 for fixing the left and right slide bars 8 and the up and down slide adjustment locking bolts 9 for fixing the up and down slide bars 7 on the up and down slide bars 6 .

The Kirschner wire clamping device includes a V-shaped clamping groove device 14 and a Kirschner wire adjustment lock nut 15, and one end of the left and right slide bars 8 is provided with an external thread matched with the Kirschner wire adjustment lock nut 15 , the left and right sliding rods 8 pass through the V-shaped clamping groove device 14 and clamp the Kirschner wire 2 through the Kirschner wire adjusting lock nut 15 .

During the specific clamping process, adjust the position of the upper and lower sliders 7 relative to the upper and lower sliders by adjusting the locking bolt 9, so that the Kirschner wire 2 can move in the up and down direction; The bolt 10 adjusts the position of the left and right sliders 8 relative to the upper and lower sliders, so that the Kirschner wire 2 can move in the horizontal direction; adjust the locking bolt 11 to adjust the position of the upper and lower sliders 6 relative to the external fixation frame by adjusting the upper and lower sliders , so that the Kirschner wire 2 can rotate in the horizontal direction; in the process of adjustment, the position or angle of related components can be adjusted through proper adjustment, and the infinite adjustment of the position of the Kirschner wire and the adjustment of any angle can be realized.

The above-described embodiments are only preferred embodiments of the present utility model, and are not limitations to the technical solutions of the present utility model. As long as the technical solutions that can be realized on the basis of the above-mentioned embodiments without creative work, all should be regarded as falling into the scope of this invention. within the protection scope of utility model patents.

Claims (3)

1. A needle-threading jig for an external fixator that can be adjusted in multiple directions and angles, is characterized in that: it includes an up and down slide bar, an up and down slide bar, a left and right slide bar and a Kirschner wire clamping device, and the up and down slide bar is a cross section It is a square cuboid sliding rod, and the upper and lower sliding rods are provided with threaded holes that are perpendicular to the cross-sectional direction and run through the upper and lower sliding rods. The angle of the upper and lower sliders relative to the external fixation frame can be adjusted by adjusting the locking bolts of the upper and lower sliders; the upper and lower sliders are set on the upper and lower sliders and can slide up and down along the upper and lower sliders; The upper and lower sliders are provided with two through holes orthogonal to each other in the horizontal wind direction, the left and right sliding rods pass through one of the through holes, and the two ends of the other through hole are respectively provided with holes for fixing the left and right sliding rods. The left and right sliding rod adjustment fixing bolts and the upper and lower slider adjustment locking bolts for fixing the upper and lower sliders on the upper and lower sliders. 2. A needle threading jig for an external fixator that can be adjusted in multiple directions and angles according to claim 1, wherein the Kirschner wire clamping device includes a sleeve and a Kirschner wire adjustment locking bolt, the sleeve One end of the left and right sliding rods is connected to the side of the cylinder, and the Kirschner wire passes through the sleeve and is adjusted and fixed by the Kirschner wire adjusting locking bolt. 3. A needle threading jig for external fixator that can be adjusted in multiple directions and angles according to claim 1, wherein the Kirschner wire clamping device includes a V-shaped clamping groove device and a Kirschner wire adjustment lock One end of the left and right sliding rods is provided with an external thread matched with the Kirschner wire adjusting lock nut, the left and right sliding rods pass through the V-shaped clamping groove device and are clamped by the Kirschner wire adjusting lock nut Kirschner wire.