SU442795A1 - Intravascular Surgery Device - Google Patents

Description

This invention relates to the field of medicine and relates to surgical instruments.

A device for intravascular operations is known, which comprises a recurrent element made in the form of a cylindrical raspator, and a flexible shaft with a movable collet shank.

However, the operation may cause injury to the inner walls of the court.

In order to avoid injury to the inner walls of the vessel and to ensure the removal of individual blood clots, the proposed device contains a flexible tubular body with a fitting for connecting to a vacuum source and a hard tip, and the cutting element is designed as a screw-shaped knife with an oblique angle and installed in hard end,

on . I shows the proposed device for intra (

1operad {th, view; on phage. view along arrow A in figure 1; in fig. 3 is a section along BB in FIG. 2.

The device for intravascular 5 operations consists of a thin-walled, made in the shape of a truncated cone, a rigid tip I, a screw-shaped knife 2, a tubular core 3 and a flexible shaft 4. 0 135. cutting edges 5.

The housing 3 with the distal end is mounted on the stepped shoulder of tip I, is flush with it, and the other is connected through the nozzle 6 by the source BaiQryMa,

The nozzle has a hollow screw 7 for adjusting the degree of vacuum of the B device.

Through an incision in the vessel wall, the device is inserted into the vessel lumen at a location where a clinically thrombus is not detected. The device advances I through the vessel to the thrombus, turns on

SOURCE of vacuum. The thrombus, due to the vacuum in the T-4DO-IOOO vahsuan system (mm Hg), is sucked into the hard tip and dissected fractionally with a knife with sharp edges at the end. Thromootic masses are evacuated with blood into a collection canister and a pui filter. Blood, if necessary, after filtration through a multi-layer nylon fabric, is poured onto the patient.

When performing a thrombosis, the edges of the hard tip are removed beyond the intima after preliminary detachment of it at the insertion point of the device. The elasticity, solidity of the tubular body and the tip with a rotating inside the sheath, performing the operation and the screw,. create convenience and safety of the introduction of the device on the ool

the depth of progression of rotational and translational advancement of the surgeon with his hand.

IMPLEMENTING INVENTOR

A device for intravascular surgery containing a flexible shaft and a cutting element, distinguished by the fact of HTO, in order to avoid injury to the inner walls of the vessel and ensure the removal of separated blood clots, it contains a flexible tubular body with a fitting for connecting to a vacuum source and a hard tip, and made in the form of a helical knife with face cutting edges, located at an obtuse angle, and installed in a hard tip.

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