SU980698A1 - Device for shunting blood vessels - Google Patents

Description

(54) DEVICE FOR SHUNTING BLOOD SUPPLIES

one

The invention relates to medicine, in particular to traumatology, and is intended for temporary prosthetic blood vessels in emergency surgery.

A device is known for temporarily restoring blood flow through the main 5 vessels (shunt), made in the form of a specially processed tubule of cane, which is shaped to fit into the vessel lumen, with annular grooves at both ends for fixing the tube with ligatures in the vessel lumen 1 .

A disadvantage of the known device is that, because of its rigidity, it cannot vary in length. This limits the use of the shunt in injuries of the magne- sic vessels of the extremities, since the distance between the ends of the damaged vessel changes as the latter moves, which causes the shunt to slide out of the vessel. In such cases, the locking-, ligating devices in the form of ligatures are unreliable; in addition, they could injure the walls of the vessel.

A device for shunting blood vessels, containing a tube with casos.

nulls with annular grooves and clamps 2.

The main disadvantage of this shunt is its large length, which causes rapid thrombus formation in it, difficulty introducing it into the vessel and unreliable fixation.

The purpose of the invention is to reduce blood clots and improve the fixation of vessels of various sizes.

To achieve this goal, in the device for shunting blood vessels containing a tube with cannulas having annular grooves and clamps, the cannulas have conical sections, and each clip contains spring rings with spikes on the inner surfaces and eyelets on the outer ones.

FIG. 1 shows the device, a general view; in fig. 2 - clamp.

The device for shunting of blood vessels consists of an elastic corrugated tube 1 with cannulas 2 injected into its ends from plastic. The cannulas 2 in the middle part have conical sections 3, allowing the device to be used in shunting vessels of different diameters, and annular grooves 4 for fastening the clamps 5. The clamps 5 are spring rings with two lugs 6 on the outer surfaces and four spikes 7 on internal. The device operates as follows. The set 2 is installed in the vessel lumen. The spring rings of the clips 5 open, skipping the ends of the vessel over the annular grooves 4, then the rings are under the action of elastic force (the end of the vessel is compressed and fixed. The displacement of the ends of the damaged vessel relative to each other is compensated by stretching the elastic corrugated tube 1. The proposed device compensates the displacement ends of the damaged vessel, elongated by an amount equal to the amount of displacement, while the device does not undergo rapid thrombus formation. x cannula makes the device more versatile, since it can be used for different receptacles bypass diametJ 4

FIG. one

Claims (2)

t ditch. The clamps allow you to quickly and securely fix the ends of the icicle to the cannulas. An apparatus for shunting blood vessels, comprising a tube with cannulas having annular grooves and clamps, characterized in that, in order to reduce thrombus formation and improve the fixation of vessels of various sizes, the tube is corrugated, the cannulas have conical sections, and each clip contains spring rings with spikes on the inner surfaces and eyelets on the outer. Ptochniki information taken into account in the examination 1. For Japan Japan number 49-19596, cl. A 61 B 17/11, 1974. 2. Tokpanov S. I. Temporary prosthetics of arterial main vessels in emergency and military field surgery. Dis. on the competition degree, cand. honey. sciences. Karaganda, 1973.