DE2656042A1 - Surgical bandage material - with one yarn forming loops and others laid in much offset weft - Google Patents

Abstract

A surgical bandage material consists of a woven fabric with one yarn forming a stitch and three others laid in offset weft. One of the latter is greatly twisted and runs at right angle to the warp direction. Good absorptive is combined with secretion retentive capacity and a strong tunnel effect. When cut, the edges do not fray.

Description

Wound dressing

Tissues are known as wound textiles with which the surface structure can be glued with the wound surface when wound moisture enters, especially wound exudate, Pus, blood and the like should be prevented or at least weakened.

Known fabrics shrink, vary in length or swell the threads or thread parts of the tissue when exposed to wound moisture and lead in the process, mutual movements result in the threads or thread parts sticking to one another and reduce or prevent with the wound.

In order to achieve the same effect as stated above, is a knitted fabric has been proposed in which a strong thread of a thin, meshed thread is involved, whereby the strong thread upturned, straight and bound by at least one minimally twisted thread is. The strongly twisted thread has the dimension 34/2 and the minimal twisted thread the dimension 40/1. In this known knitted fabric, the so-called Tunnel effect, i.e. the lifting of the knitted fabric from the wound, i.e. not sticking with the wound, due to the fact that twisted threads, i.e. crepe threads, are combined with weakly twisted single threads, the high twisted threads S-twist direction and the soft-twisted threads have Z-twist direction. Even Depending on the m2 weight, instead of a thread of the dimension Nm 40/1, a thread of the Dimension 34/1 and instead of a thread of dimension Nm 34/2 as crepe paths Thread of the dimension Nm 40/2 can be used as crepe threads.

Likewise, instead of threads of the dimension Nm 34/1, spider crepe threads, i.e. high-twisted single threads, e.g. of the dimension Nm 20/1, are used.

The object of the present invention is to provide a wound dressing material to create, in addition to a suction capacity and secretion retention capacity, an extraordinary one strong controllable lifting effect ("tunnel effect") and in the cutting process in ribbons not the stand-up hard wire weft through the known knitted fabrics Cutting the stitch frayed out laterally and complications during further processing leads.

To solve this problem, a wound dressing is proposed, according to the invention by a flat structure made of a knitted fabric with a mesh and with threads L2, L3, L4 laid in strongly staggered wefts, one of which is a thread or several threads L2, L3 or L4 twisted strongly and perpendicular to the warp direction are running, is marked.

According to a further feature of the invention, the knitted fabric of the flat structure Stitches L1 with the basic weave of the open fringe 2.o - o.2 or o.2 - 2.o, the closed fringe 2.o or o.2, the open jersey o.2 - 4.2 or the closed Jerseys 2.o - 2.4 on. Furthermore, the knitted fabric of the fabric can be made with threads L1 e.g. of dimension Nm 40/1, threads L2 of dimension Nm 40/1 and with threads L3 of Dimension Nm 34/2 or 40/2 in the form of crepe threads or crepe of the dimension Nm 34/1 provided as a highly twisted single thread of the dimension Nm 40/1 or Nm 34/1 be.

In the drawing, the object of the invention is shown, for example, and specifically shows: FIG. 1 a binding cartridge of an embodiment of the knitted fabric formed surface structure, Fig. 2 a section of a after the binding cartridge according to FIG. 1 correspondingly produced knitted fabric in a view from above, Fig. 3 is an exploded explanation of the threading to the binding cartridge according to FIG Fig. 1, Fig. 4 an exploded explanation of a further thread laying in Form of a closed fringe, Fig. 5 is an exploded view of a further threading in the form of a closed jersey and FIG. 6 an exploded view Explanation of another thread laying in the form of an open jersey.

In the flat structure shown in FIG. 2 and denoted by lo the warp direction is indicated at 20 and the weft direction at 30. The mesh is formed by the thread L1, while the laying rails, the threads L2, L3 and L4 are inserted in strongly staggered shots. Of the threads L2, L3, L4 is the Thread L2 is strongly developed, twisted up and runs perpendicular to the warp direction 20th

The following basic bonds can be used as stitches L1: a) open fringe 2.o-o.2 or o.2-2.o (Fig. 1 to 3) b) closed fringe 2.o or o.2 (Fig. 4) c) open jersey o.2 - 4.2 (Fig. 6) d) closed jersey 2.o - 2.4 (Fig. 5) as well as all known simple types of weave, such as cloth, atlas weaves etc.

The guide rails for the threads L2, L3 and L4 lead the following Standing shot variations from: L2 o.o - 4.4 o.o - 6.6 L3 o.o - 4.4 o.o - 6.6 where the Laying for the threads L2 and L3 can be varied as follows: L2 o.o - 4.4 L3 o.o - 4.4 L2 o.o - 4.4 L3 o.o - 6.6 L2 o.o - 6.6 L3 o.o - 6.6 L2 I o.o - 6.6 L3 o.o - 4.4 L4 can be offset by one or more needles. - It there is also the possibility of further laying types and variation possibilities for the threads L2 and L3 undertake by z.

B. the laying takes place over several needles. The following arrangements of the different threads can be made in the laying: thread L1 of dimension Nm 40/1 thread L2 of dimension Nm 401 thread L3 of dimension Nm 34/2 crepe thread or spinning crepe Nm 34/1 a strongly twisted single thread) L4 thread of dimension Nm 40/1 or thread L1 of dimension Nm 40/1 thread L2 of dimension Nm 34/2 or Spinning crepe Nm 34/1 (a strongly twisted single thread) L4 thread of dimension Nm 40/1 Depending on the m2 weight, instead of threads of the dimension Nm 40/1, Nm 34/1 and instead of threads of the dimension Nm 34/1 as crepe threads crepe threads of the Dimension Nm 40/2 can be used. Also instead of threads of the dimension Nm 34/2 Spinning crepe threads, i.e. highly twisted single threads of the dimension Nm 20, can be used will. Furthermore, yarns of other dimensions can also be used with a similar laying and corresponding Rotation ever 2 can be used according to the desired m2 weight.

The thread L4 can be inserted as a thick, voluminous thread, what is of great use in wound treatment.

This thread can, depending on the arrangement of the crepe thread, also through the Guide rails L2 or L3 be laid more or less heavily.

After the thread has been sewn, a favorable padding is achieved.

Instead of single threads, other thread dimensions can also be used will. There is also the option of using thick, very voluminous single yarns use, which facilitate the formation of a cushion (rough cushion) and the absorbency (Pore volume) increase.

- patent claims -

Claims (4)

PATENT CLAIMS: 1. Wound dressing material, characterized by a flat structure (lo) from a knitted fabric with a stitch (L1) and with strongly offset wefts inserted threads (L2, L3, L4), of which one or more threads (L2, L3 or L4) are highly turned up and perpendicular to the chain direction (20). 2. Wound dressing according to claim 1, characterized in that the Knitted fabric of the flat structure (lo) stitches (Ll) with the basic weave of the open fringe 2.o-o.2 or o.2-2.o, the closed fringe 2.o or o.2, the open jersey o.2-4.2 or the closed jersey 2.o-2.4. 3. Wound dressing according to one of claims 1 and 2, characterized in that that the knitted fabric of the fabric (lo) with threads (L1) of the dimension Nm 40/1, threads (L2) of dimension Nm 40/1, with threads (L3) of dimension Nm 34/2 or Nm 40/2 in Form of crepe thread or spinning crepe of the dimension Nm 34/1 as a highly twisted one Single thread and is provided with threads (L4) of the dimension Nm 40/1. 4. Wound dressing according to one of claims 1 to 3, characterized in that that the thread (L4) of the fabric (lo) roughened as thicker, more voluminous Thread is formed.