RU2001600C1 - Device for tightening wire - Google Patents

Abstract

Use in traumatology and orthopedics for tensioning needles The invention includes a cylindrical housing 1 with a handle 8 located along the axis of the housing 1 a threaded hole for a clamping screw 4 diametrically arranged perpendicular to the axis of the threaded hole channels under the spoke and with a thrust pad, the abutting surface of which is located in the plane of the tangent to the channels 2 The thrust surface and the end of the clamping screw 4 are made with protrusions and grooves 5 il

Description

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The invention relates to medical equipment, namely to traumatology and orthopedics, and can be used to tension spokes in transosseous osteosynthesis with apparatuses.

Knitters are widely used in medical practice in transosseous osteosynthesis by apparatuses, which include a cylindrical body with an axial channel made therein for receiving the end of a tensioned needle fixed in the channel with a clamping screw installed in a threaded hole perpendicular to the spoke channel. The spinator extender also comprises a spoke tensioning mechanism made in the form of a screw pair.

The disadvantage of this design is that the knitting procedure is time-consuming, it involves a series of sequential steps: installing the tensioner needle on the support with the tensioner centered relative to the clamp on the apparatus support, fixing the knitting needle, tensioning the knitting needle, checking the tension of the knitting needle , releasing the spoke, removing the spoke, which takes considerable time. The thread of the tensioning rod is quickly activated in the spinner and the entire spinner accordingly fails.

The design of the givatel spacenate does not allow the spokes fixed on the edge of the support to be tensioned, since this does not provide contact between the housing and the support.

There is also known a Spacer, which comprises a housing with a handle, with a channel for accommodating the end of the spoke, to which a threaded hole for the clamping screw is located perpendicularly. The clamping screw used in contact with the spoke end face with a smooth surface of the threaded end, as a rule, does not withstand the loads and applied to the tension of the spoke. slipping on a spoke, frees her.

The aim of the invention is to increase the convenience and reliability of the tension of the spokes. This goal is achieved by the fact that the channels for the spokes are diametrically arranged and opposite the clamping screw installed along the longitudinal axis of the housing, there is a thrust surface on which concentric acute-angled alternating grooves and protrusions are made on the end of the clamping screw.

In FIG. 1 depicts Spitsenat givatel. general view, in FIG. 2 is a section AA in FIG. 1; in FIG. 3 is a section BB in FIG. 1; in FIG. 4 is a section bb in FIG. 1; in FIG. 5-node I in FIG. 3

The specimen extractor comprises a cylindrical body 1 in which diametrically placed channels 2 are made for installing the end of the spokes 3 in one of them.

Along the longitudinal axis of the housing 1 perpendicular to the diametrically placed channels 2, a clamping screw 4 is installed in the threaded hole. Opposite it, with a gap to the transverse dimension of the channel 2

the abutment surface 5 is located, on which concentric, acute-angled alternating grooves 6 and protrusions 7 are made on the end of the clamping screw 4. The spinner also contains a mechanism

tensioning the knitting needles in the form of a handle 8. mounted on the housing 1. At the end of the handle 8, a hole 9 is made to bend the end of the tensioned needle.

Spicenate givatel is used as follows.

One end of the knitting needles is fixed in the ring of the apparatus, and the opposing end is put on the opposite end of the knitting needles 3 through one of diametrically located channels 2. The knitting needle 3 is clamped in the spigot givator with a screw 4. By moving the handle 8, the spokes spigot givator is turned around the axis of the cylindrical body 1. The knitting needle 3 is pulled and clamped in

ring apparatus.

Thus, in the proposed specimen givator, the spoke is securely fixed between the two end surfaces of the abutment surface 5 and the clamping screw

4. on which concentric acute-angled alternating grooves and protrusions are made. Since there are several grooves diametrically spaced for the spokes, it is not difficult to insert the end of the spokes into any hole most conveniently located.

The proposed device allows to simplify the process of tensioning the needles and, accordingly, reduce the time required

for tensioning.

(56) Osteosynthesis. A guide for doctors. / Ed. S.S. Tkachenko. Leningrad: Medicine, p. 124, fig. 78 (16). USSR copyright certificate

G 1171023. cl. A 61 B 17 / 58.1984.

Claims (1)

The claims DIGITAL TAPER comprising a cylindrical body with a handle and mutually perpendicular channel under the spoke and a threaded hole for the clamping screw, characterized in that, in order to increase the convenience and reliability of the tension of the spokes, the housing is made with diametrically placed Aa FIG. 3 perpendicular to the axis of the threaded hole with additional channels, the threaded hole is located along the axis case, the thrust pad is installed in the housing, the thrust surface of which is placed in a plane tangent to the channels, and concentrically arranged acute-angled protrusions and grooves are made on the thrust surface and on the end of the clamping screw. FIG. 4 6 FIG. 5 I 7