DE2062204A1 - Varicose vein dilator - Google Patents

Description

The present invention relates to a disposable varicose vein dilator, which consists of a flexible and tensile wire and a There is an olive-shaped device which is attached to one of the ends, namely the rear end, of the wire. The object of the present invention is to provide a disposable convulsive f [ vein dilator or varicose vein bougie to get that easily one Pass the Kraiapfader, i.e. a vein swollen by blood can, having varicose vein surgery with a minimal incision can be carried out and the risk of infections is reduced.

There are already known varicose vein dilators that essentially consist of a steel wire, the front end of which with a

109833/1292

conical end section and its rear end with a sop-on called Olive is provided, which is firmly connected to the wire. With a varicose vein dilator of this type, varicose veins are formed performed by removing varicose veins.

For example, in the operation of a varicose vein in a leg, the vein is exposed below the fracture site and the dilator is exposed is inserted into the vein, front end first. The expansion probe, which generally has a length of about 1,000 mm., is introduced, and the purpose is to fit the break point

and the anterior end through the vein near the groin pull out. The entire dilatation probe is pulled in, hooking the vein on the olive, the one much larger Diameter than the vein, and is pulled out of the leg, removing the break. The laughing part of so far well-known varicose vein dehnsonde'n is the. that they send Schv when passing the fracture points revealed where the blood veins often have a very tortuous course. The vein had to do this to be laid bare and operated on piece by piece., run several

α there were fractures in the same vein, and this implied that many incisions had to be made in the torment, whereby the The risk of infection became great. Wounds on the legs are usually very slow to heal, which makes it desirable that the figure of incisions on the leg is minimized so that the patient does not suffer more than necessary.

The previously known expansion probes or Bougie3 are intended for repeated use, so that the expansion probe between each operation must be cleaned, washed and sterilized. The Ver-

109833/1292

BATH

Twisting a steel wire causes the blood to be easily squeezed between the threads in the wire. so that the wire can not be cleaned -complete and the risk of transmission and introduction of bacteria into the tissue greatly enlarged T ^r ird. These obvious disadvantages are completely eliminated by the present invention, which is characterized in that the dilator or bougie is made of a homogeneous, compact or tubular soft plastic material and the front end is formed in a spiral shape.

Suitably has the spiral I-iindung at the front end a slope μ 'of at most 3/4 of a ¹ turn per cm, preferably 1/4 of one turn per cm. ·

The invention is further explained below with reference to the drawing, which shows a side view of a varicose vein dilator according to the invention shows.

The reference numeral 1 denotes a wire which consists of plastic material, which is flexible and tear-resistant and has a diameter of 2.5 mm. The wire is compact or tubular. " M

As a suitable material, for example, ^':. Macro lon ¹ ^ ^"1 can be mentioned, which is a polycarbonate with a large tensile strength of the wire 1 is provided at the one end, namely the rear end with an olive-shaped device 2, which in one piece is made with the wire 1, and this device 2 has a diameter and a length of up to 15 mm.

1098 33/1292 '

The wire 1, which has a length of about 1,000 mm , is formed in a spiral shape at the other end, the front end 3, and is somewhat enlarged at its tip 4 and provided with a conically tapering end. The spiral formation has a length of about 5 cm and a diameter of 7 to 8 mm. The pitch of the spiral is 1/4 of a turn per cm, which means that the spiral has a length of 1 1/4 turns.

The spiral shape is obtained by heating and winding the front end 3 of wire 1.

For example, if a varicose vein operation is performed in one leg should be, the vein is below the varicose vein The fracture is exposed and the dilator is inserted into the vein. At the point of the break, the expansion probe becomes helical gedr, eht, whereby the front end 3 pierces its way through and finds its way through the tortuous passage and further through the vein. If there are multiple breaks in the same vein, as in any other tortuous course of the vein, the one becomes helical Movement repeated. When you reach the groin the dilatation probe is removed, whereupon the entire vein can be pulled out by pulling on the free front end, which is hooked onto the olive-shaped device. In this way, the entire fracture as well as the entire vein will go through removed an operation.

The expansion probe, which has a soft surface, which means that it easily passes through the vein, can be varied with respect to the spiral shape in such a way that the pitch is less per cm, and the spiral winding can be cylindrical

1098 33/1292

BATH

- r - 20B2204

■: 5

or look tapered forward. The different ones depend on it Forms and the degree of slope of the type of varicose veins Vein to be penetrated.

BAD ORfGINAL

109833/1292

Claims (3)

20G2204 Patent claims (1. lllegwerfbare Kramofaderdehnsonde. Consisting of a flexible and tear-resistant wire and one on one of the wire ends, nätrlich the rear end _s fastened olivenförmi ^ en means, characterized in that the dilator from a homogeneous, compact or consists of tubular plastic material, and that the front end ( 3) ₃ which is turned away from the olive-shaped device _{3 is formed in a} spiral shape. 2. spasmodic vein dilatation probe according to claim 1, characterized in that fiaß the spiral-shaped section on the Vorderer.de (3) has a pitch of a maximum of 3/4 of a bond. per cm. 3. Varicose vein dilation probe according to claim 2, characterized in that the slope is l / k of a turn-per cm. 109833/129 2 BATH ORIGINAL