DE102013112597A1 - Contracting device for body parts, particularly tourniquet, has contracting band definable around body part and closure device, by which contracting band is lockable in its tensioned condition to loop - Google Patents

Abstract

The contracting device has a contracting band (10) definable around a body part and a closure device (30), by which the contracting band is lockable in its tensioned condition to a loop. A voltage indicator (101) is provided for detecting a voltage condition of the contracting band. The voltage indicator is formed in a manner such that a defined voltage condition is seen by a user. The voltage indicator is arranged on the outer side of the contracting band, where the outer side faces away from the body part in the use condition.

Description

The invention relates to a constriction device for body parts, in particular venous tourniquet, with a leg part about a Abschnürband which is itself elastic in the circumferential direction or is provided with at least one elastic portion, and with a closure device by means of which the Abschnürband in his order Body part laid tensioned state is lockable to a loop.

A pinch of this kind is in the US 2012/0071917 A1 specified. In this known pinch-off device, which is particularly useful in injuries to prevent severe bleeding of a body part, a tensioning device for achieving a high voltage of the tightening around the body part to a loop Abschnürbandes and a stress indicator are provided with a generated tension of Abschnürbandes tactile or visual can be determined. For example, this is how in the local 14A and 14B with description, a tension fabric folded and fixed in the fold area at attachment points that tear at excessive tension. The attachment points may have different amounts of attachment points over the width of the tension tissue, whereby the attachment points tear at correspondingly different tensile stress. However, such a high tension must first be applied in order to cause tearing at the attachment point (s), after which, however, the tensile stress abruptly decreases. With these measures, a metered voltage, as it comes for example in venous stasis to the effect to stagnate a venous blood flow, difficult to reach and recognizable. Also, the closure device is relatively expensive.

Other Abschnürvorrichtungen for body parts show the US 5,653,728 A , the WO 2006/015987 A1 , the GB 2 424 189 A , the US 3,628,536 A , the US 3,930,506 A , the US 6,525,238 B2 , the US 2008/0312682 A1 as well as the US 6,250,047 B1 , The constriction devices are provided with different closure devices, wherein the locking or fixing is sometimes cumbersome or the structure consuming. Here are, for example, in the US 5,653,728 A and the WO 2006/015987 A1 also discloses disposable designs of pinch devices after use, as are often required in the clinical field to comply with hygiene regulations.

The invention has for its object to provide a constriction device for body parts of the type mentioned above, which has a simple structure with a secure function and with the use is facilitated.

This object is achieved with the features of claim 1. It is provided that the closure device is designed as a hook and loop fastener with two locking interlocking parts interlocking. The structure provides easy handling with a few simple steps when fixing to the body part, in particular arm, with sufficient tension z. As for the stowing of a vein. Advantageously, the disposable sequestration device can be used to meet sanitary requirements. The two closure parts, preferably with hooks on the one hand and loops on the other hand, provide a stable connection with high tensile strength in the surface or circumferential direction of the body part.

A particularly advantageous construction for the production and a simple use is obtained by forming a first closure part from the strip material of the pinch-off strip itself and a second closure part from a material section fastened on the strip material.

An advantageous for the function and the application training is that the Abschnürband is made of fluffy, tear-resistant material of high tensile strength.

A further advantageous embodiment results from the fact that the Abschnürband is made of a non-woven, such as spunbonded fabric, or felt or Papierartigem material with roughened surface.

Various further advantageous embodiments are obtained in that the pinch-off made of polyester, polypropylene and / or viscose material.

Further advantages result for use in that at least one stress indicator is present for determining a state of tension of the pinch-off strip, which is designed in such a way that a defined state of tension can be recognized by a user.

With these measures, the user, for example, when training the tourniquet as venous tourniquet, the relatively low tensile stress required to inhibit blood flow (of, for example, about 10 mm Hg in the area of capillaries or <25 mm Hg in the area of larger veins ) set exactly. As a result, the treated person is no longer burdened as necessary.

An advantageous embodiment for detecting the tensile stress generated is that the stress indicator as an elastic portion on Abschnürband in the stretching direction between two fixing points with a defined excess length is formed with respect to the unloaded Abschnürbandes bridging track section of a flexible inelastic material. If the path section executed with an excess length with respect to the distance of the fixing points in the tension-free state of the pinch-off strip (eg as a folded section) is still loose, a defined predetermined state of tension has not yet been reached. If, on the other hand, the flexible inelastic web section extends completely along the pinch-off belt as a result of the stretched elastic section between the fixing points, then the defined tension state is z. B. to suppress venous blood flow. Due to the excess length of the web section between the two fixing points, a desired defined state of stress for a particular application can thus be predetermined by the manufacturer, which is easily and clearly recognizable and adjustable during use by the user.

An advantageous embodiment variant consists in the fact that the Abschnürband is formed of a flexible inelastic material and the web portion forms an integral part of the Abschnürbandes, wherein at the fixing an elastic portion forming the elastic element is connected.

Another advantageous embodiment variant is that the Abschnürband itself is at least partially formed as an elastic band and the web portion of inelastic material is attached to the fixing points on the elastic band.

An advantageous for a single use Abschnürorrichtung is that the elastic portion or another portion of the elastic band is provided with a at a first stretch irreversibly tearing or damaged use indicator, such as. B. of paper or paint. The break-through force of the use indicator is advantageously low, so that it influences the tensioning process of the pinch-off as little as possible and the tear, for example, even at low elongation of a few percent of the strain at the defined stress state (eg not more than 10% or 20% of Elongation in the defined stress state). This can be achieved by z. B. appropriate choice of material and / or material thickness and / or shape of the user indicator or by demolition at a connection point can be achieved.

For the production and function of the measures are advantageous that the connection is made by attaching the second closure member and optionally the elastic portion or the web portion to the Abschnürband at the fixing by gluing, welding, thermoplastic processes or sewing.

The invention will be explained in more detail by means of embodiments with reference to the drawings. Show it:

1A and 1B A first embodiment of a pinch-off in two different perspective views,

2 the constriction after 1A in plan view, in side view and in a view from below,

3A and 3B a further embodiment of the pinch-off in the non-tensioned state of the pinch-off and in the tensioned state thereof in plan view, side view, bottom view and perspective view and enlarged detail views in the two states and

4A and 4B a further embodiment of a pinch in the unstressed and in the tensioned state in side view and bottom view.

1A and 1B show a first embodiment of a pinch-off 1 with a pinch tape 10 for laying at least partially a blood flow in the form of a closed loop around a body part and in the tensioned state by means of a closure device 30 can be fixed. The closure device 30 is as a Velcro fastener with two locking interlocking closure parts, namely a first closure part 300 and a second closure part 301 educated.

The pinch-off device 1 has a voltage indicator in the embodiment shown 101 on, with which the clamping force of the pinch-off 10 in the region of the loop placed around a body part can be recognized by a user.

The stress indicator 101 is preferably in the vicinity of the closure-side band portion 120 arranged so that in each case it is subject to the force exerted by the loop on the applied body part clamping force.

In the in the 1A and 1B the embodiment shown is the pinch 10 even as the first closing part 300 the closure device 30 formed while the second closure part 301 as on the pinch tape 10 attached material portion is formed. An advantageous embodiment consists in that the Abschnürband 10 from a fluffy, regarding the occurring tensile forces sufficiently tear-resistant or sufficiently high tensile strength having material is produced, which forms loops for the hook and loop fastener, while the second closure part 301 as a short section of flat material with the loops of the first closure part 300 adapted hook elements is executed. Advantageously, the loops and hooks of the two closure parts are designed as microelements, so that the tourniquet feels fluffy even in direct contact with the skin of a body part to be cut off. Investigations have shown that the hook-and-loop fastener formed in this way in the applied state has sufficiently high tensile forces parallel to the surface or in the circumferential direction of the pinch-off belt 10 absorbs the required Abschnürung z. B. of veins to ensure. For putting on and taking off, the Velcro fastener can be easily and quickly closed or opened.

The Z. B. between 1.5 and 5 cm wide Abschnürband 10 can be cut from very thin roll or sheet material and is very flexible with high tear resistance. It can even be a z. B. have low intrinsic elasticity, so that it generates an elastic clamping force after applying to the body part itself. Alternatively or additionally, the clamping force by an elastic element made of suitable material 20 generated in the area of the stress indicator 101 or outside of it at the tourniquet 10 is attached.

The second closure part 301 advantageously has the same width as the Abschnürband 10 and a short length z. B. between 1 cm and 5 cm. The second closure part 301 is in turn made of thin, flexible material and z. By welding (laser welding, ultrasonic welding or the like), gluing, thermoplastic bonding, sewing or the like in an end portion of the pinch tape 10 attached. To lock or close the hook and loop fastener, only the other loop portion placed around the body part needs the fastener part 301 to be pressed, with which the closure parts interlock.

Suitable materials for the Abschnürband or Velcro are viscose, polyester, polypropylene, wherein advantageously spunbond is used in skin-friendly design.

2 shows a portion of the pinch with the pinch 10 , a stress indicator 101 with a stretch section 100 and a bridging elastic member and a second closure member 301 Velcro in plan view, side view and bottom view.

In 3A is the pinch-off device 1 in the unclamped state of the Abschnürbands 10 shown in plan view, in side view and in bottom view. In 3B the pinch-off device is in a tensioned state of the pinch tape 10 also with an enlarged detail B in the area of the stress indicator 101 reproduced, wherein the Schnschnband 10 in the region of a stretch section 100 in which an elastic element 20 is arranged to stretch a defined path length. Once this defined distance, starting from the untensioned state of Abschnürbandes 10 or a less tensioned state is reached, there is a defined state of stress of the pinch-off 10 in front. The clamping force caused thereby can be achieved by the formation of the expansion section 100 , z. B. by a relevant choice of material (material properties and / or geometric properties, such as length, thickness, width, recesses or the like.) Are set defined during manufacture. In the 3A and 3B is also a usage indicator described in more detail below 40 shown.

In the embodiment shown, the Abschnürband 10 even made of inelastic but flexible material. It may be in the manufacture of the tourniquet device 1 kept as roll goods and according to the desired length of the Abschnürbandes 10 be cut to length. Advantageously, a recyclable material, with z. B. natural reinforcing fibers from renewable raw materials and also the other parts, such as closure device, expansion section, fasteners and the like. Can be selected taking into account a good recyclability. The manufacture, operation and design of the tourniquet device 1 are advantageous interpretable also in terms of a single use only.

The stress indicator 101 is at the in 1A and 1B shown embodiment z. B. as part of a substantially inelastic Abschnürbandes 10 itself formed by being excessively at two spaced in the stretching direction fixing points on the elastic material existing Dehnabschnitt 100 is connected. Between the two fixation points there runs the stress indicator 101 forming pinch tape 10 wrinkle-shaped, wherein the excess length to the desired, defined stress state to be generated also in dependence on the formation of the Dehnabschnitts 100 is tuned. The connection to the fixation is done sufficiently firmly z. As by gluing, welding (laser welding, ultrasonic welding or the like.), Thermoplastic bonding method, sewing or the like .. When clamping the Abschnürbandes 10 the user can be on the basis of more and more the expansion section 100 approaching fold control the stretching process and thus the increasing clamping force and clearly recognize when the two fixing points bridging track portion of the Abschnürbandes 10 has reached its maximum stretch position. At this moment is also the set, defined state of tension or the optimal clamping force of the pinch-off belt produced thereby 10 reached. Should z. B. the venous blood flow in the region of the capillaries in the transition region between the arterioles and venules are prevented, reaches a correspondingly set, defined state of stress of about 10 mm Hg, the person to be treated is little burdened. In the area of veins, the blood flow or the pulsation z. B. by a state of tension of the Abschnürbandes 10 can be achieved according to a pressure of less than 25 mm Hg. For this or other applications can be made with the above measures appropriately trained Abschnürvorrichtungen 1 be provided, the stress indicator 101 and the stretching section 100 are precisely tailored to the particular application.

In a corresponding manner, more than one stress indicator can preferably be attached with differently defined stress states.

In another embodiment of the tourniquet device 1 can the pinch tape 10 even be made of elastic material. Is it at in the expansion direction spaced apart fixing points a stress indicator 101 connected with a defined excess length, it consists advantageously of flexible inelastic material, as in the previous embodiment. Will the pinch tape 10 stretched, the folded web section of the stress indicator settles 101 more and more to the outside surface of the Abschnürbandes 10 at. In this case, the excess length of the web section is matched to the bridged portion of the elastic Abschnürbands, which then the elastic element 20 according to the previous embodiments, in such a way that when fully extending the web portion along the relevant portion of the Abschnürbands 10 without folding the desired defined state of tension is reached. In this state, then the fixation of the loop by the user by means of Velcro, without tightening the Abschnürband even more.

A further embodiment of the tourniquet device 1 is in 3A and 3B shown. Here, the pinch according to the embodiment according to 1A with a voltage indicator 101 provided as an excess length of track with respect to the unloaded Abschnürbandes an elastic element 20 bridged between two fixing points, as described in more detail above. Also the closure device 30 is according to the embodiment according to 1A educated. In addition, however, is a usage indicator 40 present, which in the embodiment shown also the elastic element 20 or at least bridging a longitudinally extending portion thereof.

The usage indicator 40 is formed as in the longitudinal direction or stretching direction extending tear element, which upon elongation of the elastic element 20 With little effort tears before the final elongation is reached, which is present at the defined state of stress. Similar to the tearing element can also be another irreversible element to be damaged, such. As a paint can be attached. The region in which the tear-through element should tear during the stretching process can likewise be prevented by a certain excess length between two fixing points or fastening points of the break-through element on the elastic element 20 be determined, wherein the excess length of the tear element but in any case is less than the excess length of the voltage indicator 101 provided railway section. For example, it can be determined in this way that the tear element already tears when the elongation of the elastic element z. B. about 20%, about 50% or about 80% or another, lower intermediate value has reached relative to the strain present at the defined stress state. Any intermediate values for a tear can be set exactly in this way. Is the tear element of the use indicator 40 Torn, it means that the tourniquet device 1 was already in use and thus there is no first use, as it is in Abschnürvorrichtungen 1 is required for single use. The tear element can, for. B. consist of a slightly tearing paper strip or strip of fibers and is preferably inelastic, but flexible.

Are the fixation points of the stress indicator 101 and the attachment points of the use indicator 40 In plan view congruent, so both indicators can be easily manufactured in a common step and also matched as a functional unit to each other exactly in the desired manner.

The connection of the for the use indicator 40 used tear element at the respective fixing points or attachment points can be done in a corresponding manner, as in connection with the elastic element 20 described, so for example by gluing, welding (laser welding, ultrasound, printing by means of printing technology or the like.), Sewing or a thermoplastic connection technology or another suitable method of attachment. In the enlarged view of the section A, a connecting portion (attachment point) is shown, wherein the elastic element 20 on its top at the pinch tape 10 is fixed and is connected on its underside with the relevant attachment portion of the tearing element.

In the 3B is the stretched state of the pinch tape 10 shown, for example, as it is in the defined state of stress. Here is the tear element of the user indicator 40 already torn by the expansion, wherein the two edges on the crack side are spaced apart from each other by a relatively large expansion gap, ie the tear has already taken place in a correspondingly early stage of the expansion. In the enlarged view of the tear-through area (detail B), the one (shutter-side) remaining portion of the break-away member is the elastic member becoming thinner upon elongation 20 and the stretched track portion of the stress indicator 101 to see.

As 4A and 4B can show the pinching device 1 also independent of a stress indicator 101 or offset longitudinally thereof a usage indicator 40 at the pinch tape 10 have, the latter being an elastic element 20 bridged between two fixing points or attachment points with (or alternatively without) excess length, similar to the embodiment according to 3A . 3B described. The pinch tape 10 can be outside the elastic element 20 again be made of inelastic (= inelastic), flexible material or elastic material.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2012/0071917 A1 [0002]
• US 5653728 A [0003, 0003]
• WO 2006/015987 A1 [0003, 0003]
• GB 2424189 A [0003]
• US 3628536 A [0003]
• US 3930506 A [0003]
• US 6525238 B2 [0003]
• US 2008/0312682 A1 [0003]
• US 6250047 B1 [0003]

Claims (11)

Abschnürvorrichtung for body parts, in particular venous tourniquet, with a surrounding part of a body Abschnürband ( 10 ), which is itself elastic in the circumferential direction or provided with at least one elastic portion, and with a closure device ( 30 ), by means of which the tightening strap ( 10 ) is locked in its placed around a body part tensioned state to form a loop, characterized in that the closure device is designed as a hook and loop fastener with two locking interlocking locking parts. Tying device according to claim 1, characterized in that a first closure part ( 300 ) from the strip material of the Abschnürbandes ( 10 ) itself and a second closure part ( 301 ) is formed of a fastened on the band material material portion. The tourniquet device according to claim 1 or 2, characterized in that the tourniquet strap ( 10 ) is made of fluffy, tear-resistant material of high tensile strength. Tying device according to one of the preceding claims, characterized in that the pinch-off ( 10 ) is made of a nonwoven or felt or papery material. Tying device according to one of the preceding claims, characterized in that the Abschnürband made of polyester, polypropylene and / or viscose material is made. Tying device according to one of the preceding claims, characterized in that at least one stress indicator ( 101 ) for determining a state of tension of the pinch-off band ( 10 ) formed in such a way that a defined state of tension is recognizable by a user. Tying device according to claim 6, characterized in that the stress indicator ( 101 ) as an elastic portion on the tourniquet (FIG. 10 ) in the stretching direction between two fixing points with a defined excess length with respect to the unloaded pinch-off strip ( 10 ) bridging web portion is formed of a flexible inelastic material. The tourniquet device according to claim 7, characterized in that the tourniquet strap ( 10 ) is formed of a flexible inelastic material and the web portion an integral part of the Abschnürbandes ( 10 ), wherein at the fixing points an elastic member forming the elastic portion ( 20 ) is attached. The tourniquet device according to claim 7, characterized in that the tourniquet strap ( 10 ) is itself at least partially formed as an elastic band and the web portion of inelastic material is attached to the fixing points on the elastic band. Tying device according to one of claims 7 to 9, characterized in that the elastic portion or another portion of the elastic band with a break-in at a first extension of use indicator ( 40 ) is provided. Tying device according to one of claims 2 to 10, characterized in that the connection of the second closure part ( 301 ) and optionally the elastic portion or the web portion at the pinch-off ( 10 ) is produced at the fixing points by means of gluing, welding, thermoplastic methods or sewing.

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