COMPRESSION AID

Abstract

The present invention relates to a compression aid for compressing a puncture site of a patient, wherein the compression aid comprises a peripheral band whose circumference can be adjusted, with a constant force spring being arranged in the peripheral band.

Claims

1. A compression aid for compressing a puncture site of a patient, characterized in that the compression aid comprises a peripheral band whose circumference can be adjusted, with a constant force spring being arranged in the peripheral band.

2. A compression aid in accordance with claim 1, characterized in that a display element is preferably located at the outer side of the constant force spring and is configured to display the deflection of the constant force spring.

3. A compression aid in accordance with claim 2, characterized in that the display element is configured to display the range of the constant force to the user.

4. A compression aid in accordance with claim 1, characterized in that an element is provided by means of which the exerted force can be increased over the range of the constant force applied by the constant force spring.

5. A compression aid in accordance with claim 4, characterized in that the element is a spring that preferably at least regionally has a linear dependency between the stroke and the force.

6. A compression aid in accordance with claim 4, characterized in that the element is connected in parallel with the constant force spring.

7. A compression aid in accordance with claim 1, characterized in that the band has two ends, with the one end of the band being insertable into the other end and being fixable there.

8. A compression aid in accordance with claim 1, characterized in that the band has a closure that is manually releasable.

9. An compression aid in accordance with claim 1, characterized in that constant force spring is designed as mechanical and/or magnetic.

10. A compression aid in accordance with claim 1, characterized in that the compression aid has a color coding that is correlated with the force applied by the constant force spring.

Description

[0029] There are shown: FIG. 1: a perspective view of a compression aid in accordance with the invention; and

[0030] FIG. 2: force-distance curves of a conventional spring and of a constant force spring.

[0031] FIG. 1 shows a compression aid in accordance with the invention in a perspective view.

[0032] The compression aid comprises a peripheral band 10 in which a constant force spring 20 is integrated over a partial circumference. As can be seen from FIG. 2b, it has the advantage that the spring exerts a constant force on the puncture site over a specific stroke. It thus differs from the characteristic curve of a conventional spring in accordance with FIG. 2a in which the exerted force increases linearly with the deflection, i.e. with the stroke.

[0033] The constant force spring has the effect that the force by which the band is pressed onto the puncture site is constant over a specific stroke. The ideal position is marked by the reference numeral P1 in FIG. 2b. This position represents the center of the stroke at a constant stroke.

[0034] Reference numeral 30 characterizes an element in the form of a conventional spring that, as shown in FIG. 1, is arranged in parallel or in series with the constant force spring 10. The conventional spring is, however, not present in a preferred embodiment.

[0035] This element 30 serves to compress the puncture site more strongly by means of the closure 40 to be able to stop bleeding in the case of too great a tightening outside the ideal position P1 or in an emergency. The element 30 can for this purpose e.g. partially have a conventional spring constant (elastic modulus) up to an abutment or can be designed as a kind of “safety chain”.

[0036] As can be seen from FIG. 1, the band can be designed as a cable tie or like a cable tie. The term “band” is to be given a broad interpretation and also comprises cuffs, etc., for example.

[0037] A scale in the form of a transparent window (e.g. of plastic) is marked by reference numeral 50 and is preferably located above the constant force spring.

[0038] The scale has a max. and a min. mark that display the range of the constant force. It serves the ideal tightening of the cable tie or of another band. The normal range that is marked by P1 in FIG. 2b is located between the max. and min. marks.

[0039] The closure 40 can furthermore again be openable (reuse, removal of the compression aid).

[0040] Different strengths of the compression aid (constant force spring) can be provided, also while taking account of the girth of the forearm of a person/patient. This can e.g. be made visible by color coding of the “compression aid/bracelet”.

[0041] There can be named as advantages with respect to the prior art in a preferred embodiment: [0042] Intrinsically safe since too tight a compression can be precluded from a construction aspect by the constant force spring to the extent that said element is not provided. If it is provided, it is, however, made clear to the operator by the scale that he is leaving the range of the mechanical compression adjustment by the constant force spring element; [0043] The compression aid is preferably again manually openable via the closure; [0044] Simple in design and thus inexpensive. No expensive and complex hardware and software development. Simplification of the risk analysis; [0045] Increased comfort in wear (due to slim design without wiring) and mechanical compression regulation by a constant force spring; [0046] Abutment for tightening in an emergency with impending blood loss possible; [0047] Risk of damage to the venous access port drops; [0048] Compensation of muscle movements by the arm/hand (mechanical adjustment); [0049] Simple to use, i.e. also in the domestic area by less well-trained staff; [0050] High availability (no rechargeable battery and no charge status dependency, ...); [0051] Reusable or as disposable business for reasons of hygiene; [0052] Greater confidence of the users since the risk of too great a tightening is eased or is prevented from a construction aspect; [0053] Easier technical implementation without any great sustaining effort (discontinuation of electronics hardware, ...); [0054] Can be implemented less expensively.