RU164787U1 - SPEEDER - Google Patents

Abstract

The hitch containing jaws, a hinge, a cremallera located on the back of the jaws is an eccentric knitting mechanism for the knitting needles, and on the front jaw there is a hole coaxial with it, in which the tip is located with the possibility of turning it 360 ° with an axial channel, supporting arcuate cheeks and frame - a guide with a jumper, characterized in that the jumper of the tip contains a spoke channel coaxial to the axis of rotation of the tip, and the latter is fixed.

Description

The device relates to medical equipment, namely to traumatology and orthopedics and can be used in surgical treatment with spoke devices (Ilizarov apparatus and analogues) and skeletal traction for tensioning the spokes.

A device is known (1) Krivoshchekova E.P. et al., containing two branches on a hinge with a guide on one of them and a slider with a hole for a spoke and a cam mechanism for fixing the knitting needle. The latter is carried out by turning the cam lever, and the tension - by moving the slider with a spoke fixed in it, carried out by compression of the jaw.

The disadvantage of this device is the need to hold compressed jaws while holding the knitting needle (tightened), as well as the impossibility of holding the spoke holder in the correct orientation in adjacent ring openings, which sometimes requires repositioning of the spoke or remounting of these elements with a significant loss of time or deviation from the operation plan. In addition, the device is not applicable in all positions relative to the rings of the apparatus.

Known device N.K. Nigmatullina et al. (2), in which the gear grips seize the spoke, jamming the needle in the conical groove with its own thrust, and the branches after compression are held by the cremallera fixation mechanism.

The disadvantage of this device is the flat surface of the stop, leading to a skew of the device relative to the ring being pulled by a spoke, which leads to a loss of tension, or it must be kept from skewing by hand, spending significant forces. This makes the job difficult. In addition, the adjacent elements (in adjacent holes) create the same difficulties as with the device according to AS No. 1591970, which in total can make the tension of the spokes in a number of holes almost impossible.

The protractor was selected according to the patent of the Russian Federation No. 2164101 (3), which contains two branches, a hinge, a cremallera, an eccentric mechanism for fixing the knitting needles on one of the branches and an opening coaxial with it in the second branch, in which a removable tip with an axial channel, arcuate supporting cheeks and a guide frame with a jumper, and a removable tip is installed in the hole with the possibility of rotation in it through 360 °.

The disadvantage of this device is that the removable tip during operation is quickly lost during the sterilization process, either due to the influence of the human factor or due to breakage of the locking screw that it holds in the opening of the front jaw.

The technical result of the utility model is to increase the versatility of the device (the tension of the spokes in any spoke device) while simplifying the design without losing ergonomics.

The technical result of the utility model is achieved by the fact that in the known device containing branches, a hinge, a rack, an eccentric mechanism for fixing the spokes located on the rear branch, and a hole coaxial with it, in which the tip is located with the possibility of turning it 360 ° with axial channel, supporting arcuate cheeks and a guide frame with a jumper which contains a spoke channel coaxial to the axis of rotation of the tip, the latter being made non-removable.

The illustrations show:

FIG. 1. Spreader - a general view when using the Ilizarov apparatus on the ring (the lips are closed, the jaws are apart, the tip is worn on the head of the spoke holder, the needle is passed through the axial channel and under the jumper (not passed through the spoke channel), but not clamped by the eccentric locking mechanism. front ("fixed") jaw - 1; and rear ("movable") jaw - 2; hinge - 3; cremallera - 4; working end of front jaw - 5; hole - 6; tip - 7; axis of rotation - 8; axial channel - 9; supporting arcuate cheeks - 10; guide frame - 11; bridges ka - 12; spitsevoj channel - 13, the working end of the rear jaws - 14; a fixed jaw - 15; eccentric - 16; lever - 17; borehole - 18; ring apparatus Ilizarov - 19; the front end of the spokes - 20; head spitsederzhatelya - 21.

FIG. 2. The same. Front view. The position of the jaws relative to the ring is arbitrary; capture by the tip of the spoke holder is shown, and there is no interference with the operation of the key. The spoke is passed through the axial channel and under the jumper (not passed through the spoke channel).

Positions: front ("motionless") branch - 1; and back ("mobile") branch - 2; hinge - 3; axial channel - 9; supporting arcuate cheeks - 10; guide frame - 11; jumper - 12; spoke channel - 13; lever - 17; knitting needle - 18; the Ilizarov apparatus ring - 19; spoke holder head - 21; nut - 23; wrench - 24.

FIG. 3. The tensioner pulls the needle in the extreme hole of the open half-ring (the lever is raised, the needle is clamped and pulled: the branches are closed, the rack is closed. Three positions are selected from the infinite for example: A - for a left-handed surgeon, B - for a right-handed grip, C - for Assistant on the opposite edge of the table.

Positions: cremallera - 4; axial channel - 9; guide frame - 11; jumper - 12; spoke channel - 13; the working end of the back branch - 14; eccentric - 16; lever - 17; knitting needle - 18; the front end of the knitting needle - 20; spoke holder head - 21; the rear end of the knitting needle is 22.

FIG. 4. The tip is shown enlarged when used on the Ilizarov apparatus (part of Fig. 3) and the relative position of the spoke and jumper: the needle is passed through the axial channel and under the jumper: the spoke channel is free, the jumper lies on the spoke.

Positions: working end of the front branch - 5; tip - 7; axial channel - 9; supporting arcuate cheeks - 10; guide frame - 11; jumper - 12; spoke channel - 13; knitting needle - 18; the Ilizarov apparatus ring - 19; spoke holder head - 21.

FIG. 5. The spreader - a general view when used on a bracket for skeletal traction. The orientation of the spoke and its location are shown (passed through the spoke hole). The relationship between the tip 7, the hole 6, the spoke 18 and the bracket 25 are shown in sections.

Positions: front ("motionless") branch - 1; and back ("mobile") branch - 2; hinge - 3; cremallera - 4; the working end of the front branch - 5; hole - 6; tip - 7; rotation axis - 8; axial channel - 9; supporting arcuate cheeks - 10; guide frame - 11; jumper - 12; spoke channel - 13; the working end of the back branch - 14; fixed sponge - 15; eccentric - 16; lever - 17; knitting needle - 18; the front end of the knitting needle - 20; spoke holder head - 21; nut - 23; brace for skeletal traction - 25.

The device consists of a front ("fixed") 1 and a back ("movable") jaw 2 connected by a hinge 3 and a rack 4. The working end 5 of the front jaw 1 contains an opening 6 in which a fixed tip 7 is fixed with a possibility of rotation through 360 °. The latter contains an axis 8 with an axial channel 9, supporting arcuate cheeks 10 and a guide frame 11 with a jumper 12, and a spoke channel 13 coaxial to the axial channel 9. At the working end 14 of the rear jaw 2 there is a fixed jaw 15 and an eccentric 16 with a lever 17.

The device is used differently depending on in which orthopedic device the needle is pulled: in the Ilizarov apparatus or in the bracket for traction.

In the Ilizarov apparatus, after holding the knitting needle 18 in the ring 19, its front end 20 is rigidly fixed (clamped) by the head of the spoke holder 21 (Fig. 1-4.). On the rear end 22 of the spokes 18 put on the head of the second spoke holder 21 and "bait" the nut 23 until it stops. The tip 7 is put on the spoke 18, passing the last 18 through the axial channel 9 between the fixed jaw 15 and the cam 16, put the guide frame 11 on the head the holder 21 until the cheek 10 contacts the head of the holder 21 or the ring 19, and the jumper 12 is laid on the spoke 18. As a result, the head of the holder 21 is self-oriented along the spoke 18. The jaws 1 and 2 are opened until the working ends 5 and 14 are closed, and then they are lifted with effort growl ag 17, pressing the eccentric 16 to the spoke 18 to the fixed jaw 15. In this case, the fixed jaw 15 and the eccentric 16 bite the spoke 18, which ensures its rigid grip 18. The surgeon takes jaws 1 and 2 with his hand, turning the entire device into a position convenient for himself, compresses them with force and closes the cremallera 4, like a vascular clamp, until the knitting needle is fully tensioned (Fig. 3). Knitting needle 18 - taut. By turning the wrench 24 (Fig. 2), tighten the nut of the holder 23 for the final fixation of the tensioned spokes 18, then open the rack 4 and lowering the lever 17 to its original position, remove the device from the spokes 18.

If the device has to be used on the bracket 25 for skeletal traction 25, then the tip 7 is supported by passing the spokes 18 first through the spoke channel 13, and then, as in the previous case, through the axial channel 9. The tensioner abuts against the spoke device (for example, bracket 25 or otherwise) by the spoke channel 13, and not by the cheek 10. Further actions are identical to those described above.

The device allows you to quickly (in a few seconds) pull any needle fixed in any orthopedic and traumatological device, significantly reduce the duration of tension and fixation, which, in comparison with the traditional tensiator included in the Ilizarov apparatus, can be up to half the time of transosseous osteosynthesis operation. Efficiency is equally high at points inaccessible when using known devices, and the quality of the tension of the knitting needles and ergonomic comfort are provided without special skills, both for a right-handed and left-handed (left-handed) surgeon.

Bibliography:

1. Copyright certificate SU No. 1591970

2. Copyright certificate SU No. 1710021

3. Patent RU No. 2164101.

Claims (1)

A spreader rod containing jaws, a hinge, a cremallera located on the back of the jaws with an eccentric pin fixing mechanism, and on the front jaw there is a hole coaxial with it, in which the tip is located with the possibility of turning it 360 ° with an axial channel, supporting arcuate cheeks and frame a guide with a jumper, characterized in that the jumper of the tip contains a spoke channel coaxial to the axis of rotation of the tip, and the latter is fixed.

Images