RU1777907C - Conductive probe for drainage tube - Google Patents

Abstract

The invention relates to the field of medicine and is intended for conducting drainage tubes. The goal is to reduce traumatic ™ by eliminating radial deformation. The essence of the proposed solution is. that the conductor is provided with the ability to adjust the stiffness (in length). For this purpose, it is made in the form of a tension cable interacting with a coaxially double helical spring with intersecting directions of coils mounted on it. The spring abuts on one side of the annular stop at the outer end of the tension cable, and on the other hand, on the end face of the handle of the probe body. A cable tension mechanism is provided. 2 s. p. f-ly, 2 silt,

Description

(L

WITH

The invention relates to medicine, in particular to devices for forming a transhepatic drainage during operations on the bile ducts by means of drainage tubes.

Conducting probes are known for forming drainage, for example a probe with removable olives.

It has two olives. One for forming a tunnel in the liver for drainage, the other for fixing and dragging the drainage tube. A major and significant disadvantage of this probe is that. that it inevitably and significantly injures the liver parenchyma, bile ducts and a large number of liver vessels, including large ones.

A conductor is also known, which contains a metal spiral, inside of which a tension cable is passed with it fixedly fixed at one end

its olive. The conductor comprises a cable tensioning mechanism. A significant drawback of this design is that when the conductor passes through a significant narrowing or with a complete stop of the olive, radial forces that can deform the spiral are inevitable. And even an elastic radial deformation of the spiral will inevitably lead to an operating injury, not to mention the dangers posed by the residual deformation of the spiral.

The purpose of the invention is to create a conductor probe design that allows a significant reduction in operational trauma by eliminating radial deformations of the elastic flexible conductor.

In the proposed solution, the goal is achieved by making an elastic-flexible conductor having |

XI XI

Yu Oh x |

1 female cable inside, in the form of two coaxially mounted coil springs having spiral turns opposite to each other. The tension cable interacts with these springs by means of a rigidly fixed tip.

With this arrangement and relative positioning, the outer coil spring serves as the inner shell for supporting the radial forces arising, and the mutual intersection of the spiral coils virtually eliminates any radial deformation of both springs.

With such a technical solution, the probe conductor retains the necessary flexibility and adjustable stiffness.

In FIG. 1–2 is a general view of the conductor probe assembly with the selection of characteristic nodes in a section.

The probe conductor comprises a tensioned trusic 1 with annular protrusions-stops 2 at the ends. One of the stops 2 is rigidly articulated with a tip 3 under the drainage tube, and the other emphasis 2 is rigidly articulated with a faceted portion 4, articulated in turn with a screw 5 of the cable tensioning mechanism interacting with a nut 6 (of the same mechanism), which has its own peripheral ring interact with the rear end of the cylindrical hollow handle-housing 7 during its rotation (to tension or loosen the cable).

The cable 1 is passed through coaxially mounted coil springs 8 and 9 (8 is internal, 9 is external with the intersecting directions of the coils. The springs 8 and 9 abut against a stop 2 at the outer end of the cable 1 and into a stop 10 on the other end of the handle case 7, while in the stop 10 a central hole is provided for free passage of the cable 1. and in the handle-body 7 there is a partition 11. having a through hole for a faceted section 4 corresponding to its section.

The probe conductor operates as follows.

When the nut 6 rotates to the right (with the right thread), screw 5 receives axial movement and carries the cable 1 along, which, due to the stop 2, at its outer end

presses the springs 8 and 9 to the stop 10: the cable 1 is tensioned and the conductor stiffness increases. When the nut 6 is rotated in the opposite direction, the end of the cable 1 located inside the handle body 7

moves in the direction of the tip 3 and the entire tension system relaxes - the conductor gains flexibility, which increases with this reverse rotation of the nut 6. Thus, the stiffness of the probe conductor is continuously adjustable.

Conductor probes are made with different diameters of the tips 3 and the outer diameters of the springs 8 and 9, depending on the diameters of the bile ducts.

Claims (3)

1. A probe conductor for a drainage tube containing a coil spring with a cable placed inside it, having an olive and one handle on one end with its tensioning mechanism, characterized in that, in order to reduce trauma due to the exclusion of radial deformation, it is equipped with an additional coil spring placed coaxially on the main one, while the spiral coils are directed opposite to each other, and the cable has ring stops, one of which is located between the olive and the spring, and the other is in the hollow handle. 2. The probe conductor according to claim 1, with a tout and the fact that the tension mechanism is made in the form of a screw pair, the screw of which is rigidly articulated with a cable, and the cylindrical nut has an annular protrusion interacting with the rear end handles .1 3. The probe conductor according to paragraphs. 1 and 2, characterized in that, for the purpose of exclusion the rotation of the cable, the joint section of the screw and the cable is faceted, and the handle has a partition with a hole for the section. FIG. 1 Editor M. Egorova fc Compiled by A. Fedin tehred M. Morgenthal Corrector Slisina