FR2571249A1 - Fastening and protective bandage for dressing consisting of self-adhesive extendable gum - Google Patents

Abstract

This invention relates to the fields of health and hygiene and its aim is, in view of its flexibility and its ease of use, to offer fastening and effective protection of any dressing, compress, bandage and splint. This invention is in the form of a highly extendable band which allows complete freedom of movement of the previously dressed limb. Its standard available sizes allow its use with various types of injury. The main point of interest of this band however, is that it is resistant to water, to certain fatty bodies and detergent products, and therefore effectively protects any dressing or compress against any possible soiling. It consists of an elastic material which by pressing adheres spontaneously to itself and therefore avoids the use of pins or other stapling devices. The band then remains welded to itself and can no longer be detached. Being self-adhesive, it adheres neither to the skin or to the hair, and is therefore is of great use not only for various treatments of the human body but also for the treatment of animals. The fastener allows, on the other hand, advantageous replacement of a rubber fingerstall (cot). It matches the outline of a finger perfectly, while always maintaining the size of the latter, being neither too wide nor too narrow. Its additional advantage over adhesive dressings is that it does not become unstuck in water, and does not leave viscous marks on the skin. The composition of the band is prepared starting from a colloidal suspension of isoprene which constitutes the sap of various species of plant, in particular hevea. After various processing phases, it acquires some flexibility which gives it the required properties mentioned above. After having employed the conventional therapy for each type of wound, the bandage effectively protects small injuries, cuts, corns, chaps and cracks, and can therefore perform various functions taking account of its various uses. Being extendable, non-allergenic and having micropores, this novel band, taking account of its various uses, as well as the substantial for potential to users, allows it to be a preferred component compared to other bandaging techniques which have doubtless been of much use for many years, but which nevertheless remain of restricted use and consequently require a wide range of dressings to be available.

Description

the aims of the present invention are achieved thanks to the components of said strip, which allow it to adhere spontaneously to itself, and therefore avoid the use of stapling means such as pins or the like, and making it possible to grip any part of the body when
different treatments.

The material of the strip comes from natural latex which is a natural collcidale suspension
isoprene constituting, among other things, the sap of hevea, as well as other plant species.

The preparation of the strip will be obtained with a mixture of 2 different varieties of substantially equal proportions and coming from 2 varieties of rubber trees such as the variety CLONE PB 86 and the variety CLOUES GT I.

The preparation of said material constituting the strip will comprise the following steps, based on a collofdale solution of latex.

a) First step: Precoauulation
The latex is added with water at the rate of a quantity of water of 10 to 20% of the volume of latex, the addition water being at a pH of between 6 and 8 and comprising in solution calcium salts and / or magnesium, the yellow precipitate which can form then being separated from the initial colloidal suspension; the separation of the yellow precipitate can advantageously be carried out by filtration.

b) Second step: Coagulation
The colloidal suspension, rid of its yellow precipitate, is then added with sodium bisulfite to complete the discoloration, then with an organic acid in an amount sufficient to cause total coagulation of the latex; advantageously the organic acid may be acetic acid or formic acid or a mixture of the two.

c) Third stage: separation - calendering
The coagulum formed is kneaded and washed abundantly with demineralized water until complete disappearance of the products added for coagulation, then it is calendered between cylinders to be in the form of a sheet of about I m / m d 'thickness d) Fourth stage: drying at room temperature the leaves of the coagulum are left for several days at room temperature (I6 - 400C) until dry (defined by a loss of weight less than I / .. during one hour of maintaining N 400 under a pressure of 0.1 bar).

e) Fifth step: cut-out
The sheets are cut into strips # your tapes are laid on a sheet of support material, a gauze is placed on the tape, then another sheet of protective material. The tapes are then placed in a dry heat oven in a ventilated atmosphere, for 6 hours at a temperature of between 100 and 100, to give stretchy and self-adhesive tapes.

The strip then completed with the gauze, its support material and its protective material, is wound or folded on itself in order to suit different packaging models for which it may be intended.

The strips used as support and protective material must protrude by approximately 1 cm on either side of the rubber strip in order to prevent the edges of the latter from sticking
spontaneously with each other.

the figures of the appended plates illustrate in fig. I-a general mode of presentation of a strip according to the invention in different aspects, and in FIGS. 2a and 2b, 3, 4, 5, 6, 7,
E, and 9, some examples of its use.

In the drawings of fig. I a strip of rubber "a" according to the invention is laid on a dig "b" of a support material, polyester film or paper. A gauze pad is
esée on the strip of gum. then is added in order to protect the go = e strip and the gauze press, a sheet "c" of a protective material, polyester film or paper. the respective strips are then folded on themselves. Note that the films "b" and "c" exceed a certain width of approx. Icm on each edge of the eraser.

in fig. 2a and 2b, the strip is used as a finger-pocket, and effectively protects the
ear infections such as cracks, cuts, chapped skin, against any possible contamination.

 In fig. 2a, after having used the usual therapy for each type of wound, the gauze c-press is placed at the site of the wound, then a piece previously cut from the strip of gum is put in such a way that be it edge to edge. It is then enough to press the ends following the finger storyteller, and to cut as in fig.

b the excess gum.

In fig. 3, a scalp dressing is held in position by the strip of the invention which adheres to itself at various points in FIG. 4, an effective maintenance and protection of a dressing on the knee was carried out.

In this situation, the invasion tape also buys on itself at different points in order to maintain the dressing.

 S fig. 5, a compressive bandage is carried out on a forearm, by means of the g imT ~ r.tion band.

In fig. 6 which relates to a cow, the bandage is used for a repair of horn, for the protection of the hooves, as well as for the treatment of teat wound without sutures.

In fig. 7, the strip can be used for cats, after removal of the ovaries and suturing of the wound (usual therapeutic follow-up), in order to maintain the gauze pad previously placed on the wound and in order to protect it from any stain outside.

 In fig. 8, the strip does not adhere to the dog's hair and protects the limbs such as tail, paws, etc.

In fig. 9, for the horse, the band is used to ensure effective protection of crevices, biting teeth, cannons and cannonballs.

Claims (4)

CLAIMS I - Strip of flexible and extensible material intended to be used in various body care operations, spontaneously adhering to itself, which therefore avoids the use of stapling means such as pins or the like; the strip then remains welded on itself and can no longer come off. It is therefore perfectly suited to all types of restraint; said material comes from natural latex, which is an isoprene polymer characterized in that said latex will be obtained with a mixture of 2 varieties of rubber tree such as the truth CLONE GT I and the variety CLONE PB 86. Band according to the claim I, characterized in that the preparation of said strip material will comprise the following steps, based on a colloidal solution of latex - a) First step: precoagulation The latex is added with water at a rate of an amount corresponding to 10 or 20% of the volume of latex, this addition water being at a pH between 6 and 8 and comprising in solution calcium and / or magnesium salts. A yellow precipitate can then form. It must be separated from the initial colloidal suspension, preferably by filtration. - b) Second step: coagulation The colloidal suspension, then rid of its yellow precipitate, is added with sodium bisulfite in order to perfect the discoloration. In order to cause total coagulation of the latex, an organic acid of the formic or acetic type, or else a mixture of the two, will be added to this preparation. - c) Third stage: separation - calendering. The coagulum born from the preparation is kneaded and rinsed abundantly with demineralized water in order to make the various products added during congulation disappear. fl is then placed and calendered between cylinders so that it e. take iotas the strength of a leaf about I m / m thick. d) Fourth stage: Drying The leaves of the coagulum formed, about I m / m thick, are placed for several days at an ambient temperature between 160 and 400 until dry (defined by a loss of weight less than I / .. for at least one hour holding at 400 for a pressure of OII bar). e) Fifth etane: Cutting your leaves are cut into strips. The strips are laid on a sheet of support material. A gauze is placed on the strip, then another fire binds with a protective material. the strips are then placed in an oven with dry heat and a ventilated atmosphere, for approximately 6 hours at a temperature between 900 and 1000, to give stretchy and self-adhesive strips. The strip then completed with the gauze, its support material and its protective material, is wound or folded on itself in order to be suitable for different packaging models for which it may be intended. 3 - Strip according to claim 4 characterized,  in that the strips serve as material for  support and pactection must exceed approx. Iem on both sides  of the rubber band in order to prevent the edges of the latter from  spontaneously inherit from each other. 4 - Strip according to claim 3, characterized,  in that the strip of support material  and protective is a polyester film. 5 - Banda according to claim 3, characterized,  in that the strip of support material  and protective is a film of paper. 6 - Strip according to claim 2 cutting, characterized,  with a gauze pad (from  preferably pure cotton) applied to the rubber band and inserted in  sort it and the protective material.