Disposable defibrillator electrode assembly
A disposable electrode assembly for a portable defibrillator ( 12 ) comprises defibrillator electrodes ( 14 ), batteries ( 24 ) for powering the defibrillator, and a connector ( 22 ) for connecting the electrodes and batteries to the defibrillator. The connector has power output terminals ( 20 ) for connecting the battery to the defibrillator and high voltage input terminals ( 20 ) for applying a defibrillation voltage to the electrodes. The batteries ( 24 ) are housed in the connector ( 22 ) or mounted on the rear of one electrode.
1. A portable defibrillator comprising a main housing containing defibrillator circuitry and a disposable sub-housing removably fitted to the main housing, the sub-housing comprising an electrode storage location containing a pair of defibrillator electrodes, at least one battery within said sub-housing for powering the defibrillator circuitry, and a connector for electrically connecting the sub-housing to the main housing, wherein the connector has power output terminals for connecting the at least one battery to the defibrillator circuitry and at least one high voltage input terminal for receiving a defibrillation voltage to be applied to the electrodes, wherein the electrodes are electrically connected by a frangible connection which is broken when the electrodes are deployed from the storage location, and wherein the defibrillator circuitry determines when the frangible connection is broken to complete a power circuit in the main housing for energizing the electrodes.
2. A defibrillator as claimed in claim 1 , wherein the sub-housing is slidable into a complementary recess in the main housing, the sliding movement bringing the terminals on the the main housing and the sub-housing into engagement.
3. A defibrillator claimed in claim 2 , wherein the sub-housing comprises a shallow upper tray-like recess for accommodating the defibrillator electrodes and a deeper battery-containing recess occupying part of the area of the tray-like recess, wherein the main housing has a stepped recess complementary to that of the lower surface of the sub-housing, wherein the sub-housing is slid into the recess in the main housing from an edge thereof in a direction substantially parallel to the plane of the tray-like recess, and wherein the engaging terminals are located on riser portions of the lower surface of the sub-housing and the complementary recess in the main housing.
4. A defibrillator as claimed in claim 1 , wherein removing the electrodes from the storage location breaks the frangible connection.
5. A defibrillator as claimed in claim 1 , wherein removing the electrodes from the stowage location and separating the electrodes for use breaks the frangible connection.