SU1498473A1 - Venoextractor - Google Patents

Abstract

The invention relates to medical technology, in particular, to surgical cutting tools. The purpose of the invention is to reduce the morbidity of the operation by eliminating the coagulation of the paravasal fiber. The venoextractor contains an annular knife 1 with a cutting edge 2 around the perimeter of the ring and a dielectric, an electrical wire installed in the dielectric, connected to the annular knife, and a handle 5. The cutting edge of the knife is opposite the handle with a protrusion 6, in the hole of which a dielectric sleeve is mounted with a fixed in it, an electrode located asymmetrically to the projection longitudinal axis. The handle is made removable with the possibility of movement along the conductor 10, in which an electrical wire and an electrode are installed. A fixing device 11 is mounted on the handle. The electric wire and the electrode are connected to the contacts 12 and 13 separated by a dielectric sleeve 14. The venoextractor is used as follows. Handle 5 is removed. Conductor 10 is connected through pins 12 and 13 into the lumen of the vein and run along the vein. The vein is then intersected at the level of the projecting end of the conductor 10. Conductor 10 is pulled out until the proximal end of the vein is gripped by a knife. Handle 5 put on the conductor. Handle the venextractor in the distal direction by the handle 5. By successive tightening of the conductor, its rotation, switching on high-frequency currents, the intersection and coagulation of the venous ducts and the removal of the surface veins are carried out.

Description

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The invention relates to medical technology, in particular to surgical cutting tools.

The purpose of the invention is to reduce the trauma of the operation by eliminating the coagulation of paravasal fiber.

FIG. 1 shows the venous extractor, general view; in fig. 2 - annular knife venoextractor from the side of the ledge; in fig. 3 is a section A-A in FIG. 2

The venoextractor contains an annular knife 1 with a cutting edge 2 and a dielectric 3 mounted in a dielectric, an electrical wire 4 connected to an annular knife. The cutting edge of the knife is made opposite the handle 5 with a protrusion 6; a sleeve 7 of a dielectric with an electrode 8 fixed in it is mounted in the knife hole, which is asymmetrically aligned with the longitudinal axis 9 of the protrusion.

The handle is made removable with the possibility of movement along the conductor 10 and with the fixing device 11. An electrical wire and an electrode are installed in the conductor. The electrical wire and the electrode are connected to the contacts 12 and 13, separated by a dielectric sleeve 14.

The venoextractor is used as follows.

The mouth of the large saphenous vein is exposed, tied and crossed. In the distal direction, the conductor Yukonts with contacts 12 and 13 is inserted into the lumen of the veins (after removing the handle 5). The conductor 10 is advanced into the lumen of the vein until it stops moving and this end is protruded through soft tissues. An incision is made in the skin, subcutaneous tissue at the level of the protruding end of the conductor 10, the vein is exposed, tied near the end of the conductor 10 and intersected. Hand-pull the end of the conductor 10 removed from the vein until the proximal end of the crossed large saphenous vein is gripped by a knife. Put the handle 5 on the conductor 10 and fix it with the fixing device. Pins 12 and 13 are connected to the electric appliance. Tighten the distal direction of the handle 5 with the venextractor 5;

by the rim edge 2 of the circular knife 1, the paravascular fiber is until sensation of resistance and the appearance of deformation on the skin, which indicates that the venous inflows are captured by the circular knife.

After that, the venoextractor is rotated by the handle 5, taking into account the position of the electrode 8 (counterclockwise) up to the stop of the protrusion 6 into the venous inflow, which is determined by the resistance to rotation, include high-frequency currents and venous inflows are cauterized. The venous extractor is advanced in the distal direction and, with an emphasis by an annular knife 1 into the tributaries of the veins, they are processed. At the same time, the venous tributaries simultaneously intersect the cutting edge of the protrusion 6 from the side of the electrode 8 and coagulate on the same side due to the asymmetric arrangement of the electrode 8 in the bore of the sleeve 7. After the intersection and coagulation of all venous tributaries is completed, the venextractor along with the vein is removed from wounds. Both wounds heal, overlay dressings. Similarly, superficial veins are also removed in the lower leg area.

Claims (2)

Invention Formula . A veno extractor containing an annular knife with a cutting edge around the perimeter of the ring and a dielectric, installed in a dielectric, an electrical wire connected to an annular knife, and a handle, characterized in that, in order to reduce the morbidity of the operation by eliminating coagulation of the paravasal tissue, the cutting edge of the knife made with a protrusion opposite the handle, in the hole of which a dielectric sleeve is installed with an electrode fixed in it, which is located asymmetrically to the longitudinal axis of the protrusion. 2. A venoextractor according to claim 1, characterized in that the handle is removable and movable along a conductor and with a locking device. Phage.2