Patent ID: 11878108
Assignee: BRIGHTWAKE LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An apparatus for negative pressure therapy of a topical wound, the apparatus comprising:
a vacuum pump that occupies a volume of less than 10 cm3;
a first chamber in fluid communication with the vacuum pump such that the source of reduced pressure is operable to generate a negative pressure in the first chamber;
a pressure release means, in communication between the first chamber and ambient surroundings, that prevents the negative pressure in the first chamber from exceeding a predetermined maximum negative pressure value by permitting the entry of ambient gas into the first chamber when pressure in the first chamber reaches the predetermined maximum negative pressure value;
a second chamber comprising means for establishing fluid communication between the second chamber and a wound;
a valve located between the first chamber and the second chamber, the valve permitting the negative pressure in the second chamber to increase in response to an increase in the negative pressure in the first chamber, and preventing the negative pressure in the second chamber from dropping in response to a drop in the negative pressure in the first chamber,
wherein the first and second chambers are defined by housings and wherein the housing of the first chamber and the housing of the second chamber are structurally identical and each housing defines a single chamber.