SU1217400A1 - Arrangement for fixing splints - Google Patents

Description

The invention relates to medicine, namely to dentistry, and is intended to be fixed with wire ligatures of various structures of dental tires in the treatment of fractures of the jaws.

The purpose of the invention is to improve the usability.

FIG. 1 shows a device for fixing tires, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The device comprises a hollow shaft 1 with a gear wheel 2 mounted in the housing 3, a rod 4 with an emphasis installed in the cavity of the shaft 1 and containing a return spring 5. The device is equipped with a clamp in the form of conical jaws 6 pivotally mounted on the hollow shaft 1 and kinematically pomoply connected with the slide 7 with the rod 4. The toothed rail 8 has a finger 9, by means of which through an actuator made in the form of a rocker arm 10, one arm of which has a groove 11 with the finger 9 located in it, is connected to the body 3. hinge 12, spring gate 13. The device has a handle 14, a retaining ring 15, a fastening screw 16 and a washer 17.

The device works as follows.

Holding the device with the hand for the handle 14, with the thumb press the stop of the rod 4, together with it a forward movement, which in turn with the help of the curtain 7 is transformed

Aa

into the movement of the conical jaws 6, which open up. The device is inserted into the oral cavity, in the region of the protruding ends of the wire ligature 18, which covers the tooth and the adjacent splint. The thumb is removed from the stop of the rod 4. Due to the action of the return spring 5, the rod moves to its original position and through the wings 7 communicates the approaching movement of the conical jaws 6, which

0 closing firmly holds the ligature 18. The index finger of the same hand, pressing the short arm of the rocker arm 10, imparts rotational movement to the other arm around the hinge 12, which through the finger 9 moves down the gear rail 8. Due to the unidirectionality of the teeth of the wheel 2 and the rail 8, the bevel Jaws 6 through the hollow shaft 1 receive a rotational motion, thereby automatically twisting the wire ligature 18. When released

0 of the short arm of the rocker arm 10 with the aid of the return spring 13 of the rack and pinion 8, returns to its original position.

The proposed device for fixing the tires allows, to a considerable degree, to mechanize the process of fixing the tires, to carry out manipulations with one hand with a good visual overview of the surgical field. This device allows to increase the efficiency and quality of the operation and the injuries to the mucosa and the tooth-gingival margin in the hard-to-reach areas of the oral cavity.

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five

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fig.g

Compiled by l. Gochstein

Editor M. DylynTe.hred I. VeresKorrektor L. Patay

Order 1024/7 Circulation 659 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (2)

1. DEVICE FOR TIRE FIXING, comprising a housing with a gear rack and a shaft with a gear wheel mounted therein, working jaws mounted on the end of the shaft, and a handle and drive connected to the housing, characterized in that it is provided with a view to increasing ease of use a spring-loaded rod with an emphasis on one end, the shaft is hollow, a spring-loaded rod is installed in the cavity of the shaft, while the other end of the rod is kinematically connected to the working jaws. 2. The device according to π. 1, characterized in that the finger is mounted on the gear rack, and the drive is made in the form of a rocker arm, one shoulder of which is spring-loaded relative to the housing and has a through groove, while the pin of the gear rack is located in the latter. Srig. 1