SU1734719A1 - Forearm bone fracture reposition device - Google Patents

Abstract

Use: ensuring rotation of fragments and reducing the time of application of the apparatus. SUMMARY OF THE INVENTION: A device for repositioning fractures of the forearm bones comprises a base 1, made in the form of two concave guides, on each of which tubular rods 2 are mounted with rods 3 with clamps 4 fixed to them. in the form of two convex guides. Tubular rods 6 are mounted on each of the guides with rods 7 fixed in them with clamps 8. 4 Il.

Description

The invention relates to medicine, namely to traumatology, and can be applied for the treatment of forearm bone fractures.

A device for repositioning bone fractures of the forearm is known, comprising a guide with an elbow grip and elements of fastening the fragments of the forearm, a lumbar strap and a finger restraint hinged on the guide and fixed in the desired position.

The disadvantages of this device are the impossibility of ensuring the rotation of the fragments and the lack of convenience in the application of the prolonged fastening of numerous belts, as well as the long time of matching the fragments.

Also known is an apparatus for repositioning fractures of the bones of the forearm, containing the shoulder rest, the stop under the radiocarpal joint, the holder, and the extension mechanism. The cage holder and the stop under the radiocarpal joint are mounted on a pivot arm with the possibility of changing the distance between -: they are connected to the shoulder rest using a pull mechanism. The keeper holder is made in the form of clamping plates hinged on the sliding brackets, and the stop under the arm is made in the form of a fixing ring.

However, rotational movements are not provided in the device and its application requires a long time to reposition the radius in a typical place (8-10 minutes).

The closest technical solution to the invention is an apparatus that contains a shoulder rest with a stand and a cage holder and an associated pull mechanism located on the stand and made in the form of a lever, a spring, a sector scale, and a worm shaft with a gear and drum. with a cable and hook mounted on the other arm of the lever. The holder is made in the form of plates with holes, connected by means of a rod and a U-shaped clamp, one of which is hinged. The plates have microporous lining, and the shoulder rest is provided with a pneumatic cushion.

The drawbacks of the device are the lack of ensuring the rotation of fragments and the relatively long time of application of the apparatus.

The purpose of the invention is to ensure the rotation of fragments while reducing the time of application of the apparatus.

The goal is achieved by those. that in the device for repositioning bone fractures of the forearm, containing the base, the fastening elements and the holder, the basement is made in the form of two concave guides, on each of which are installed tubular bars with the rods in them with clamps, on the rods a frame is fixed, made in the form of two

0 convex guides, on each of them are installed tubular bars with rods fastened in them with clamps. The rods are connected by a strap, in the center of which the threaded rod with two

5 lambs with the possibility of its spatial displacement, and the caster holder is fixed at the end of the rod.

FIG. 1 shows a device for the reposition of fractures of the bones of the forearm, axiom; 2 shows a device for treating fractures of the bones of the forearm; on fig.Z - section aa in figure 2; figure 4 - view B in figure 2.

Device for reposition of fractures

The 5 bones of the forearm contain a base 1 with tubular rods 2 and the rods 3 which enter them with locking clips A. On the rods x 3 a frame 5 is fixed, with which the upper tubular braces are rigidly connected.

0 rods 6 with the rods 7 entering into them and locking clips 8.

5 the end of the rod 11 is rigidly attached to the tong holder 14 in the form of a plate with belts 15 and 16. The base 1 and the frame 5 are assembled from slats fastened with nuts, their components are not in separate positions

0 rendered as functionally they work as one.

The base 1 is made concave, and the frame 5 is made respectively convex to cover them through the foam moldings (not shown) of the back and front surfaces of the shoulder. The whole structure is made of light aluminum alloys (D16AT grade duralumin). Position 2a in figure 4 shows a second embodiment with four tubular bars between the base and the frame.

A device for repositioning fractures of the forearm is used as follows.

5 After sedation and laying the patient on the operating table on the back of the right upper limb (in the 90 ° retraction position and bending in the elbow joint at 90 °), the back surface of the shoulder is placed on the concave surface of the bases 1 (through a foam pad). The rods 3 are lowered into the holes of the rods 2 until the convex surface of the frame 5 (also through the foam pad) comes into contact with the front surface of the shoulder, the lambs 4 are tightened. The upper limb is bent at the elbow joint, and the fingers of the hand are fixed on the wrist-holder plate 14 by straps 15 and 16. The strap 16 fixes the brush at the level of the bones of the wrist. The area of the lumina-ray joint is treated with a solution of iodine, and the Novocainic anesthesia of the radial and ulnar side is produced. After 4-5 minutes, distraction is given.

Distraction is performed as follows.

Lambs 8 and 13 are weakened, and lamb 12 is rotated clockwise (when viewed from the top) to the required height (depending on the standing and setting of the fragments). The fragments are repositioned, then a control X-ray is performed in two projections in the operating room. If necessary, additional distraction or rotation of the forearm is given or vice versa

12 the tension weakens, then the thumb

13 contoured lamb 12. All forearms are treated three times with iodine. The device and the patient's entire body are insulated with sterile sheets, allowing for the imposition of a compression-destructive apparatus or other manipulations. Subsequent fixation of the forearm with a gypsum dressing, half-man and KDA is possible.

The proposed device has the ease of construction, stability in a vertical position on the side table, its application automatically gives the correct position and ratio of the bones to the forearm with the bones of the wrist and the humerus. The design in one action fits into any size of the upper limbs and represents full access both along the entire length and around the circumference of the forearm. The device realizes the possibility of rotational movements by 5 turning the plate around the axis of the rod 11 rigidly attached to it, the device is manipulated without wrenches by rotating the butterfly. After a production intervention on the forearm (open intervention or external fixation in the KDA), it is easily removed by loosening the wing 4, the vertical position of the forearm provides less bleeding in the wound or in places

5 input and output spokes.

Correction by the external fixation device minimizes or eliminates the need for it altogether; the distance between the stags of 21 cm makes it possible to use KDA rings from the smallest to the D rings 180 mm, and the matching time of bone fragments is on average 1 -2 minutes (versus 8-10 minutes in devices — but rax imposed).

Claims (1)

5 Formula of Invention A device for repositioning bone fractures of the forearm, containing a base, fastening elements, a holder, characterized in that, in order to ensure the rotation of fragments, the base is made in the form of two curved guides, each of which has tubular bars with rods entering them with clamps, a frame is fixed on the rods, made in the form of two guides curved in the opposite direction, on each of them are installed tubular rods with rods fixed in them with clamps, the rods 0 are connected by a strap, in the center of which a threaded rod is fixed with the possibility of its spatial displacement, and the holder is fixed on the end of the rod inside the frame, five