Surgical Dressings or Bandages.
Year: 1886

page_text: Date of Application, 1st May, 1886.
Complete Left, 1st Feb., 1887
Complete Accepted, 29th Mar., 1887.
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Surgical Dressings or Bandages.
I, JAMES GRIEVE LORRAIN of of Norfolk House, Norfolk Street, London W.C.,
Consulting Engineer, do hereby declare the nature of this invention to be as
follows:
My invention relates to media or materials for respirators and medical or surgical
dressings or bandages by the use of which certain advantages are obtained.
At present many antiseptic materials or media are employed for medical or surgical
purposes a common form consisting of tissue, wool, fibre or the like impregnated with
chemicals or substances capable of acting upon organic matter. These chemicals or
substances present the drawback that they become altered or require renewal from
time to time. As they become altered they become less efficacious and their renewal
is attended with considerable expense. The object of my invention is to provide
materials or media which do not deteriorate by use and do not require renewal.
In carrying my invention into effect I take advantage of the phenomenon known as
catalysis by which the combination of distinct bodies or the decomposition of a
compound are caused by the presence or contact of a body which has itself no tendency
to unite with either of the bodies which it causes to combine or with the compound
whose decomposition it brings about or with the components thereof but remains
unaffected by the actions which it effects. To bring about this catalytic action I
employ platinum, palladium or other metallic body capable of producing catalytic
action and preferably in a porous or finely divided state or in a state presenting
greatly extended surface for example if platinum be the catalytic metal employed it
may be used in the form of spongy platinum or platinum black. In order to
economise the catalytic metal and at the same time obtain extended surface I may
deposit it on the surface of any suitable material as for example on carbonised tissue
or fabric carbon plates or blocks crushed retort carbon broken or powdered wood
charcoal bone black animal charcoal asbestos or asbestos cloth pumice unglazed porous
earthenware dried clay or the like. The catalytic metal may be deposited on the
surface or in the pores of the suitable material above referred to by electro-deposition
chemical deposition or otherwise. For example if platinum be the catalytic metal

page_text: employed it may be deposited on the surface and in the pores of a porous material by
dipping the said porous material in a solution of platinous chloride Pt Cl, and then
heating to a dark red heat in a closed vessel.
For the purposes of this specification I shall hereinafter for the sake of brevity refer
to the catalytic metal or material coated or impregnated with a catalytic metal by the
term "catalytic material."
I may place the catalytic material between layers or folds of fabric or porous or
more or less open tissue or fabric or gauze or other similar or equivalent bodies for the
sake of protection or support.
I generally prefer to keep the catalytic material moist when in use. This moistening
may be effected in any convenient manner. When employed as a respirator the
catalytic material may be sufficiently moistened by the breath.
The action of my invention is as follows:-The catalytic material not only acts
mechanically as a sieve or air-filter separating and retaining solid matter suspended or
floating in the air but by virtue of its catalytic action it acts antiseptically or
therapeutically by producing combination between the oxygen of the air whether free
or dissolved in the film of moisture with which the catalytic material is moistened and
the
germs or organic or putrescent or other oxidisable matter whose hurtful action it
is desirable to guard against.
The catalytic material suitably protected and supported as above referred to may be
applied in the form of a bandage or otherwise and may serve as a dressing when
applied to wounds or sores or as a respirator when applied to the mouth preventing
the passage to or from such wounds or sores or the mouth or lungs of dangerous
matter as aforesaid.

page_text: Improved Media or Materials for Respirators and Medical or.
Surgical Dressings or Bandages.
I JAMES GRIEVE LORRAIN of Norfolk House Norfolk Street London W.C. Consulting
Engineer do hereby declare the nature of this invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the following
statement:
My invention relates to media or materials for respirators and medical or surgical
dressings or bandages by the use of which certain advantages are obtained.
At present many antiseptic materials or media are employed for medical or surgical
purposes a common form consisting of tissue wool fibre or the like impregnated with
chemicals or substances capable of acting chemically upon organic matter. These
chemicals or substances present the drawback that they become altered or require
renewal from time to time. As they become altered they become less efficacious and
their renewal is attended with considerable expense. The object of my invention is to
provide materials or media which do not deteriorate by use and do not require
renewal.
፡፡
In carrying my invention into effect. I take advantage of the phenomenon known as
catalysis" by which the combination of distinct bodies or the decomposition of a
compound are caused by the presence or contact of a body which has itself no tendency
to unite with either of the bodies which it causes to combine or with the compound
whose decomposition it brings about or with the components thereof but remains
unaffected by the actions which it effects. To bring about this catalytic action I
employ platinum palladium or other metallic body capable of producing catalytic
action and preferably in a porous or finely divided state or in a state presenting
greatly extended surface. For example if platinum be the catalytic metal employed
it may be used in the form of spongy platinum or platinum black. In order to
economise the catalytic metal and at the same time obtain extended surface I deposit
it on the surface of a suitable material as for example on carbonised tissue or fabric
carbon plates or blocks crushed retort carbon broken or powdered wood charcoal bone
black animal charcoal asbestos or asbestos cloth pumice unglazed porous earthenware
dried clay or the like. The catalytic metal is deposited on the surface and in the
pores of the suitable material above referred to by electro-deposition chemical
deposition or otherwise. For example if platinum be the catalytic metal employed it
is conveniently deposited on the surface and in the pores of a porous material by
dipping the said porous material in a solution of platinous chloride Pt Cl, and then
heating to a dark red heat in a closed vessel.
For the purposes of this specification I shall hereinafter for the sake of brevity refer
to the catalytic metal or material coated or impregnated with a catalytic metal by the
term "catalytic material."

page_text: I prefer to place the catalytic material between layers or folds of fabric or porous or
more or less open tissue or fabric or gauze or other similar or equivalent material for
the sake of protection or support.
I treat the catalytic material with water or keep it moist when in use.
This may
be effected in any convenient manner such as by occasional dipping into or treating
with water or by contact with a piece of sponge or other material capable of absorbing
and retaining moisture or by dipping in water and then covering with an impervious
tissue or material such as rubber tissue or oiled silk or the like or by providing the
bandage or respirator with a trough containing water or by any other similar or
equivalent device. When employed as a respirator the catalytic material may be
sufficiently moistened by the breath.
The action of my invention is as follows:-The catalytic material not only acts
mechanically as a sieve or air-filter separating and retaining solid matter suspended or
floating in the air but by virtue of its catalytic action it acts antiseptically or
therapeutically by producing combination between the oxygen of the air whether free
or dissolved in the film of moisture with which the catalytic material is moistened and
the germs or organic or putrescent or other oxidisable inatter whose hurtful action it
is desirable to guard against.
The catalytic material suitably protected and supported as above referred to is
applied in the form of a bandage or as a dressing when applied to wounds or sores or
as a respirator when applied to the mouth preventing the passage to or from such
wounds or sores or the mouth or lungs of dangerous matter as aforesaid.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is:-
:-
1. The improved media or materials for respirators and medical or surgical
dressings or bandages consisting in materials of porous or open texture coated
treated and arranged substantially as described.
2. The improved media or materials for respirators and medical or surgical
dressings or bandages consisting in a catalytic metal in a porous or finely divided
state or in a state presenting greatly extended surface treated and arranged
substantially as described.
Dated 11
די
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