Surgery – Truss – Pad
Patent
1987-03-12
1989-04-04
Apley, Richard J.
Surgery
Truss
Pad
128DIG20, 1281181, A61F 1300
Patent
active
048175951
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a pressure bandage for the staunching of a bleeding external wound, with a hollow gastight compress, having at least one elastically deformable wall section which is to be laid with its outside on the wound to be dressed and which is to be deformed outwardly by being acted upon from the inside by a flow medium under pressure above ambient pressure.
When speaking of a "pressure bandage" hereinabove or hereinbelow, this term should not be understood to mean exclusively a self-holding bandage whose compress is held on the patient's body by means of a gauze bandage, an adhesive plaster or the like. Rather, the pressure bandage according to the invention, as will be evident at once to the competent specialist, can be used in special cases even without special fastening means. Such a case may be present, for example, when dressing a root canal after extracting a tooth.
When speaking of a "compress" hereinabove or hereinbelow, this means an element with which a certain compression is to be exerted on a wound to be dressed, so as to prevent bleeding or to staunch bleeding that has already begun.
So-called compression or pressure bandages have long been known for the dressing of wounds. In this regard, reference is made only, for example, to German Pat. No. 188 337 or German Pat. No. 550 751. In these (pressure) "bandages" known for many decades, the compress is made of textile or textile-like material, e.g., gauze-enveloped wadding, absorbent gauze or the like.
Basically nothing has changed in these matters for many years. Thus, for example, in the 1965 DIN standard 13153 concerning "Fire wound bandage packs" it is written that this consists of a basket-weave staple-fiber fabric having a certain structure. A corresponding situation holds, for example, for the bandage compresses of the German Army (see the "Technical Delivery Conditions" TL 6510-002/3 of the Federal Office for Military Technology and Procurement, dated 1967).
Newer developments for pressure bandages (or at least bandages intended and suited as alternatives for them) also have as compress a blood-staunching pressure member which consists of a wound-up gauze bandage or the like (see, e.g., German patent application No. 28 40 667, applied for in 1978 and published in 1981). 6" represents the section of valve 6' in connection with annular valve seat 4'.
Although the compresses of the previously known pressure bandages that have been used millions of times to date have proved best in a large number of cases, there remains a neglected number of cases in which conventional pressure bandages fail or lead to some quite considerable difficulties. Such cases occur everyday in the professional area, e.g., in dental care, when, for example, a patient has had a tooth extracted, such patients not necessarily having to be among those having unusually low blood coagulation capacity (=bleeders or quasi-bleeders), but also in first-aid cases in which wounds generally first have to be provisionally dressed by laymen.
In the case of such after-bleeding from wounds (especially external ones) the treating physician has heretofore applied a so-called pressure tamponade, made of gauze or the like, and requested the affected patient, e.g., after extraction of a tooth, to press the upper and lower jaws tightly together for a certain (generally lengthy) time interval, so as to stop the bleeding. Apart from the fact that in many patients this can lead to variciform conditions in the jaw region in conjunction with a certain degree of psychic stress, this measure also frequently does not lead at all to the desired result, i.e., a quick staunching of bleeding from the affected wound.
A corresponding situation holds for many other medical cases, of which we shall cite as examples only the dressing of the chest after prior opening by means of a so-called imbricated bandage (recommended or prescribed by the DRK [German Red Cross]) or the dressing of an opened carotid artery, the last-cited case being especially critical not only because of the relatively lar
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Apley Richard J.
Flaxman Howard
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