RU2775111C1 - Venous tourniquet - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment and is intended to restrict the circulation of venous blood in human limbs during venipuncture. Venous tourniquet includes a tape passed through the body of a lock and equipped with a latch with a tip at one end and a lock tip at the other end, wherein the latch is configured to be secured in the body of the lock, forming a tape loop. The tips of the latch and lock have grooves for pulling in the tape, with a thickness of no more than one layer, and cavities for placing the ends of the tape. The end sections of the tape are bent, forming double-layer end thickenings, and placed in the cavities of the tips of the latch and lock with the end thickenings of the tape abutting against the wall of the groove of the corresponding tip.

EFFECT: use of the invention provides a structural simplification of retaining the ends of the tourniquet tape in the fastening elements, contributing to the reliability of use of the entire structure even with the elastic tape being strongly tensioned.

3 cl, 3 dwg

Description

Technical field

The claimed invention relates to medicine and is intended to limit the circulation of venous blood in the limbs of a person during venipuncture. The device can be used both for the formation of individual and group first-aid kits, and for equipping a professional physician. The minimum weight and dimensions of the tourniquet allow you to place it in any individual first aid kit.

State of the art

Hemostatic tourniquets and tourniquets are widely used to assist the wounded and injured. Models of SurvCat, Soft Gen, SurvMed manufacturers are known: from simple, often torn rubber and silicone models for manual dressing to effective tactical tourniquet tourniquets with automatic fixation (https://voenka.pro/collection/turniketyzhguty).

An important feature of tourniquet tourniquets is the possibility of applying them with one hand, that is, if necessary, such a tourniquet can be applied by the victim himself. Hemostatic tourniquet (tourniquet) provides uniform compression, dosed compression and does not injure the skin and tissues.

Such harnesses are known, for example, from patent sources RU72131, 76791, 103465. The design of the harness is maximally simplified, it can be easily applied independently with one hand, with minimal physical effort.

The tourniquet contains an elastic band connected to form a loop with a lock. The lock contains a base over which a rocking rocker is installed. The harness is rigidly connected to one end of the rocker, on the lower side of the other end of which a fixing element is made, under which the free end of the harness passes along the guides. When the tourniquet loop is tightened on the wounded limb, the base, resting on the bend, occupies a vertical position, the fixed end of the tourniquet is pulled perpendicular to the plane of the rocker, and the fixing element tightly presses the free end of the tourniquet. The uniform distribution of tension along the loop made it possible to increase the tightening of the tourniquet until the arterial circulation stopped without the risk of pulling individual skin areas under the tourniquet. You can loosen the tourniquet by lightly pressing on the shoulder of the rocker with the fixed end of the tourniquet.

The closest in technical essence to the claimed invention is a tourniquet disclosed in the materials of the publication RU2255682. The device contains an elastic band detachably fixed by means of a latch block on one side to the lock body, which consists of a base, two side walls and a cover on its upper side, and on the other side to the latch block (latch body, in terms of the claimed invention) . The other free end of the harness, directed or directed to form a loop, is located between the rocker arm and the partition located under the rocker arm. The free end is pressed by a rocker to the front section of the partition, which is connected to the lock body. The partition has a spring section spaced to the upper side, by which the locking block is raised in its inner section and, in the inserted position, is pressed by the rear upper side against the counter-support fixedly located on the body. The block-retainer by the rear retaining element and/or the front retaining part, when interacting with the mating element or the mating part of the lock body, is kept from being pulled back and can be released by pressing its rear section.

The body of the block-retainer in this solution is made detachable from two parts - a cover and a molded fixing block, which creates a risk of poor-quality connection between them. The fixing insert does not provide a secure connection to the housing. In addition, when clamping the end of the bundle, it is necessary to precisely align the spikes and holes, otherwise the fastening will be unreliable.

The technical problem solved by the claimed invention is the need to overcome the shortcomings inherent in analogues and the prototype, by creating a hemostatic tourniquet design that provides reliable fixation of the victim's limb area.

Brief disclosure of the essence of the invention

The technical result achieved by using the claimed invention is to simplify the design of holding the ends of the harness tape in the fasteners, which contributes to the reliability of the use of the entire structure even with a strong tension of the elastic tape.

The claimed technical result is achieved by the fact that a hemostatic venous tourniquet has been developed, including a tape passed through the lock body and equipped with a latch with a tip from one end, and a lock tip from the other end, while the latch is configured to be fixed in the lock body to form a tape loop, in which, according to the technical solution, the tips of the latch and the lock have grooves for inserting a tape, not more than one layer thick, cavities for accommodating the ends of the tape, while the end sections of the tape are bent to form two-layer end thickenings with a length of at least 5 mm, and placed in the cavities of the latch and lock tips with the stop of the end thickenings of the tape against the wall of the groove of the corresponding tip. The height of the cavities of the tips provides the possibility of placing a two-layer end thickening of the tape. The stop of the end thickening of the tape prevents the possibility of its reverse pulling through the grooves of the tips.

Brief description of the drawings

The claimed invention is illustrated by the following images, where

In FIG. 1 shows a general view of the harness assembly,

In FIG. 2 shows a section of the structure,

In FIG. 3 shows a general view of the lock without a harness tape, disassembled.

Positions in the drawings indicate:

1 - tape,

2 - lock,

3 - lock tip,

4 - latch tip,

5 - lock body,

6 - lock rocker,

7 - protruding part of the rocker,

8 - protrusion in the body,

9 - latch,

10 - latch groove,

11 - latch retainer,

12 - pressure plate of the latch retainer,

13 - lock button,

14 - groove of the tip of the tape,

15 - strap.

Implementation of the invention

The inventive device includes a tape 1 made of elastic materials, and a means of its fixation, which is a lock 2, made with the possibility of fixing the tip 4 of the latch 9 in it. on the other hand, it will reduce the time of the tourniquet fixation procedure, and on the other hand, it is quite sufficient for fixing any limb. The width of the tape is no more than 25 mm, which allows you to pinch the limb.

The design of the lock 2 provides for its implementation in the form of a body 5, divided into two: upper and lower cavities. Button 13 of the lock 2 is located on the outer side of the body 5, from the side of its upper wall. On the lower wall of the housing 5 in the lower cavity there is a rocker arm 6 that changes its position (tilt) when the direction of displacement of the tape 1 is changed. and her release. Above the rocker arm 6 there is a bar 15 with a protrusion at the end, to which the tape 1 is pressed at the moment of its fixation in the taut state.

One end of the tape 1 is inserted and fixed in the tip 4 of the latch 9. The tip 4 is associated with the latch 11, placed in the upper cavity of the body 5. The latch 9 consists of a hollow tip 4 and latch 11, with a pressure plate 12. The latch 9 is a one-piece part, made, for example, of plastic. In the interface zone of the latch 11 and the tip 4 in the latch 9, a narrow transverse groove 10 is made, designed to insert the tape through it into the cavity of the tip 4. The width of the groove 10 is comparable to the thickness of the tape and is selected to provide the possibility of pulling through it one layer of tape 1 with resistance, without the possibility of its free displacement in both directions. The length of the groove 10 corresponds to the width of the tape 1, and the height of the cavity of the tip 4 corresponds to the double width of the tape 1. The end of the tape 1 is inserted through the groove 10 of the latch 9 and the cavity of the tip 4 is brought out. The end of the tape 1 is tucked up (folded in half) and securely fixed to the main fabric of the tape 1 (sewn or fixed in another way) with the formation of an end thickening. Then the tape 1 with end thickening is pulled back through the cavity of the tip 4. The end section of the tape 1 folded in half rests against the wall of the groove, which excludes the possibility of it being pulled through the narrow groove 10. Thus, one end of the tape 1 is securely, without the possibility of displacement, fixed in latch 9. The latch 11 of the latch 9 is placed in the upper cavity of the housing 5, while the pressure plate 12, when the latch 11 is placed in the correct position, is pressed out, rests against the wall of the housing 5, preventing the possibility of reverse motion. By pressing the button 13 of the lock 2, the pressure plate 12 of the latch 11 is pressed, after which the latch 11 no longer rests against the wall of the housing 5, and can be removed from it.

The other end of the tape 1 is also fixed in its own tip 3, which is a hollow part with an end groove 14 wide enough to insert only one layer of the tape. The end section of the tape, wound through the groove 14, is folded in half with the formation of an end thickening, fixed in the folded form (sewn or fixed in another way), after which the tape 1 is pulled back through the groove 14, as a result of which the end of the tape 1 folded in half is located in the cavity of the tip 3 without the possibility of displacement in one direction or another, rests against the wall of the groove.

The inventive tourniquet hemostatic venous can be used as follows.

Pre-working harness is characterized by a position in which the ends of the tape 1 is securely fixed in the corresponding tips 3 and 4, the tape 1 is passed through the lower cavity of the lock 2 with the formation of a loop. If it is necessary to fix the limb with a tourniquet tape (part of the tape on the side of the latch with a latch) cover the fixed limb. The latch 11 of the latch 9 is inserted into the body 5 of the lock 2 until it clicks, corresponding to the position in which the pressure plate 12 is depressed, abuts against the wall of the body 5 under the button 13. Thus, the limb (for example, a hand) is located in the loop of the tape 1. To tighten harness, the other end of the tape 1 (from the side of the tip of the lock) is pulled through the lower cavity of the lock 2 to the required tension of the tape 1. The plane of the rocker 6 is tilted, freely passing the web of the tape 1. When the maximum tension is reached, the tape 1 is released, and it rests against the ledge on the bar 15, preventing its reverse movement, as a result of which the tape 1 is securely fixed. If a slight loosening is required, the protruding part 7 of the rocker arm 6 is pressed, and the tape 1 is loosened. If it is necessary to instantly remove the harness, press the button 13 of the lock 2, as a result of which the latch 11 comes out of the body 5 of the lock 2, and the loop of the harness opens. The application time of such a tourniquet is no more than 15 seconds. In this case, the ends of the tape securely hold the tape in a taut state, without the possibility of their displacement and, moreover, falling out of the latch and tip.

Example of a specific implementation

A tourniquet of the claimed design was made as a prototype. The harness tape has a length of 1 m and a width of 2.5 cm, made of a polymeric material. The ends of the tape are folded in half to form a thickening 2 cm long and placed, respectively, in the tip of the latch and the tip of the tape. The tape is stretched through the lower cavity of the lock, equipped with a rocker to prevent the tape from moving in the opposite direction.

The use of a hemostatic tourniquet of the claimed design will allow:

- reduce the tourniquet application time to 10-15 seconds with minimal physical effort;

- apply a tourniquet and dose compression without visual control;

- apply a tourniquet directly on the skin without the use of additional materials, as well as minimize complications by maintaining blood microcirculation.

Claims (3)

1. A hemostatic venous tourniquet, including a tape passed through the lock body and equipped with a latch with a tip at one end and a lock tip at the other end, while the latch is configured to be fixed in the lock body to form a tape loop, characterized in that latch and lock tips have grooves for inserting a tape, not more than one layer thick, cavities for accommodating tape ends, while the end sections of the tape are bent to form two-layer end thickenings and are placed in the cavities of the latch and lock tips with the end thickenings of the tape resting against the wall groove of the corresponding tip. 2. The harness according to claim 1, characterized in that the height of the cavities of the tips makes it possible to accommodate a two-layer end thickening of the tape. 3. The harness according to claim 1, characterized in that the stop of the end thickenings of the tape prevents it from being pulled back through the grooves of the tips.

Images