FR2604619A1 - HOOK OF EVEINAGE - Google Patents

Abstract

THE INVENTION CONCERNS A SURGICAL STORAGE INSTRUMENT, CALLED BREEDING HOOK. A FEEDING HOOK IN ACCORDANCE WITH THE INVENTION INCLUDES A ROD 20 HAVING AT ONE END A HOOK 22 WHICH IS ESSENTIALLY LOCATED ON ONE SIDE OF THE ROD: PREFERABLY THE END OF THE HOOK OCCUPIES A MAXIMUM END POSITION, AND THE HOOK IS CURVED ON AN ARC SENSITIVELY EQUAL TO 180.

Description

The present invention

object a stray hook.

  The term "stray hook" as used herein refers to a surgical instrument used in procedures to remove varicose veins. when

  should remove varicose veins, the conventional method

  you mark them in pencil while the patient is standing, as this inflates the veins. After extraction of the main veins with a vein-puller, attention is paid to the particular varicosities. The vein to be pulled is cut. A stray hook, a surgical instrument having a thin, elongated stem with a hook-shaped head, is then inserted into the incision and used to catch the vein and pull it out.

  the incision. An extra effort often makes it possible

  pull one end of the vein before it breaks. In this way, by the use of a series of incisions, it is possible to extract, in stages, a vein

whole and leave it intact.

  The only stripping hook known to the Applicant is a hook resembling a shepherd's crook, namely a hook that first tilts on one side of the stalk and then turns on itself on the other side of the stalk. the stem. The known form of the hook is illustrated in FIG. It is not known why the conventional vein hook has such a shape, but the Applicant has long been of the opinion that it was not the ideal form. The surgeon often makes a large number of incisions on veins and dissec. These incisions need to be sutured, which makes the procedure lengthy. The incisions are, moreover, unattractive. It is desirable to make incisions limited in number and size as much as possible. When using a haemostat to extract the vein, there is some difficulty in preventing damage to nearby nerves, which may be extracted with the vein. This is particularly the case around the ankle and the foot, where the vein and the

  nerves meet and are superficial.

  One of the objects of the invention is to provide a stripping hook which leaves a more

small incision to use.

  The invention relates to a stripping hook comprising a rod having at one end a hook which is essentially on one side of the rod.

According to an important configuration

  aunt, the end of the hook occupies an external position

maximum.

According to one form of the invention,

  the hook is bent in an arc extending over

1800.

The present invention will be better

  included in the description that will be made on the one hand of a

  hook of the prior art, and secondly of the two embodiments of a hook according to the invention, in relation

  with the figures of the attached single plate, in which

  FIG. 1 is a partial illustration of a hook of the prior art, FIG. 2 is an illustration of a stripping hook of the invention according to a first embodiment, and FIG. Fig.3 is an illustration of a hook of the invention according to a second embodiment.

In fig.2, the snap hook

  The rod can from the handle, become regularly more and more thin, or (as shown in FIG. 3), it can be staggered, so as, in one as in the other case, lose its diameter and go from 3 mm around the handle to about 1 mm at its end, where it turns

  on itself on an arch of 1800, to form a hook 22.

  The end of the hook is between 0.5 and 0.75 mm. To facilitate sterilization, strength and durability, the stripping hook is made of stainless steel. The hook 22 is a little smaller than the hook of

  the conventional instrument, with an internal diameter of about

  2.5 mm, but its main feature is that

  projects only one side of the stem, the transverse

  dirty (A dimension) of the illustrated example being 4 mm.

Both the stem and the tip of

  the instrument are uniform and polite.

The size and shape of the

  are important for the effectiveness of the instru-

  is lying. The use of this hooked instrument as described normally results in incisions as small as 4 to 6 mm in length. Note that the reduction of these dimensions can not go below that of the outer diameter of the hook. The reason for this is that the instrument can be turned at least 900 and

  that the hook can be introduced first, by the inci-

  if we. This is not feasible with the Convention

  nel. If the hook were bent over 1800, it would be just as difficult to extract the vein by the smallest incision possible, since the stem and the hook should pass together through the incision. If the hook formed an arc less than 180 angular aperture, it would be difficult to grasp the vein and extract it by

  the incision, since the vein would tend to escape

per hook.

  The use of a vein hook, the size and shape described allows even the extraction of larger veins. Incisions of this required size do not require suturing

  and cause barely visible scars. Polisa-

  the end of the hook prevents tearing of the vein but its fine size can not prevent the end of

  hang in the wall of a big vein.

Sometimes thin filaments

  want, especially in the foot and ankle, are

  extracted at the same time as the vein since they are localized

  near this one. In these specific circumstances,

  may, according to the invention, use a first detection hook.

  swim to extract the entire nerve / vein from the incision and a second to dissect the nerve filaments from the vein. This is almost impossible when using square brackets

anterior vein.

Although we have described and

  represented a particular embodiment of the invention.

  It should be understood that the scope of the latter is not limited to that form, but extends to the general features defined here, taken separately or in combination and making it possible to distinguish the invention from

the prior art.

Claims (2)

R E V E N D I C A T I 0 N S   1.- Stripping hook, characterized in that it comprises a rod (20) having at one end a hook (22) which is essentially on one side of the rod; 2. Stripping hook according to claim 1, characterized in that the end of the hook occupies a position of maximum externality;   3. Stripping hook according to claim 2, characterized   se: in that the hook is curved   on an arc substantially equal to 180.