Disclosed is a method for controlling an electrochemical pump, comprising: providing an electrochemical pump, and causing a control circuit of the electrochemical pump to generate a pulse signal to enable an electrochemical reaction on electrodes of the electrochemical pump, wherein the pulse signal has alternating on-periods and off-periods where the pulse signal is off, and wherein each on-period has a plurality of on-times where the pulse signal is on and a plurality of off-times where the pulse signal is off, the on- and off-times being alternatingly arranged.

A negative pressure assembly includes a drape, a sealing element, a reactor, and a mechanical pump assembly. The drape covers a dressing site on a patient and seals against the skin upon application of a vacuum while maintaining a negative pressure underneath the drape. When applied to the skin, the sealing element cooperates with the drape to define an enclosed volume covered by the drape and surrounded by the sealing element. The reactor is located with respect to the drape and the sealing element to be in fluid communication with the enclosed volume when the drape is covering the dressing site and is configured to react with and consume a selected gas found in air. The mechanical pump assembly is connectable to the enclosed volume and has a pump chamber in fluid communication with the enclosed volume to draw air from the enclosed volume into the pump chamber.

The invention relates to a fluid pump or rotary cutter having at least one first element (9, 10) which can be brought from a transport slate into an operating state by changing at least one mechanical property. Such a pump can, for example, be a blood pump for the medical, microinvasive area. The object of achieving a transition between the transport state and the operating stale which is as comfortable as possible and in so doing leaving a freedom in the design of the corresponding apparatus, in particular of a pump, which is as large as possible, is achieved using the means of the invention in that the first element at least partly comprises a material (24, 25, 26, 27) or can be filled with a material or material mixture which passes through a chemical reaction, in particular cross-linking, or a crystallization for transition into the operating state.

A capsule to be ingested by a subject, the capsule may include an outer enclosure configured to dissolve in gastric juice; a secondary enclosure that is permeable for gastric juice, is at least partially surrounded by the outer enclosure when in a folded state, and has a fully expanded volume; and an expandable polymer element that is surrounded by the secondary enclosure; wherein a fully expanded volume of the expandable polymer element exceeds the fully expanded volume of the secondary enclosure.

A wound therapy device and method includes a skin contacting element, a reactor, and a reactor housing element. The skin contacting element is configured for covering an associated tissue site, the reactor for creating a pressure condition at the associated tissue site upon actuation thereof, and the reactor housing element for accommodating the reactor. The skin contacting element has a skin contacting side and an interface side, which is opposite the skin contacting side. The reactor housing element has a lower affixing side and an upper side, which is opposite the lower affixing side.

The invention relates to a fluid pump or rotary cutter having at least one first element (9, 10) which can be brought from a transport state into an operating state by changing at least one mechanical property. Such a pump can, for example, be a blood pump for the medical, microinvasive area. The object of achieving a transition between the transport state and the operating state which is as comfortable as possible and in so doing leaving a freedom in the design of the corresponding apparatus, in particular of a pump, which is as large as possible, is achieved using the means of the invention in that the first element at least partly comprises a material (24, 25, 26, 27) or can be filled with a material or material mixture which passes through a chemical reaction, in particular cross-linking, or a crystallization for transition into the operating state.

The invention relates to a fluid pump or rotary cutter having at least one first element (9, 10) which can be brought from a transport state into an operating state by changing at least one mechanical property. Such a pump can, for example, be a blood pump for the medical, microinvasive area. The object of achieving a transition between the transport state and the operating state which is as comfortable as possible and in so doing leaving a freedom in the design of the corresponding apparatus, in particular of a pump, which is as large as possible, is achieved using the means of the invention in that the first element at least partly comprises a material (24, 25, 26, 27) or can be filled with a material or material mixture which passes through a chemical reaction, in particular cross-linking, or a crystallization for transition into the operating state.

A wound therapy device and method includes a skin contacting element, a reactor, and a reactor housing element. The skin contacting element is configured for covering an associated tissue site, the reactor for creating a pressure condition at the associated tissue site upon actuation thereof, and the reactor housing element for accommodating the reactor. The skin contacting element has a skin contacting side and an interface side, which is opposite the skin contacting side. The reactor housing element has a lower affixing side and an upper side, which is opposite the lower affixing side.

A controlled pressure device includes a reactor housing element, a reactor, and a cosmetic liquid or cream. The reactor housing element is configured to at least partially define an at least substantially air-tight enclosed volume around a tissue site when fixed in space in relation to the tissue site. The reactor is positioned in the enclosed volume and is configured to react with a selected gas found in air. The reactor consumes the selected gas within the enclosed volume. The cosmetic liquid or cream is also located in the enclosed volume.

A respiration system is provided with a container (1) in which, by an exothermic chemical reaction of a reaction material, CO.sub.2 is removed from the respiration air or oxygen is generated, and with an indicator of the consumption of the reaction material. The consumption indicator has a predetermined amount (7) of material which can be melted by the reaction heat of the exothermic chemical reaction. The material is kept in thermal contact with the container interior in such a manner that a measurement of the total reaction heat, and thus the consumption of reactive material, can be read from the degree of melting of the meltable material.