Sequence switch for ventricular defibrillator
First Claim
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1. IN A CARDIAC DEFIBRILLATOR, IN COMBINATION WITH A PAIR OF ELECTRODES, A SEQUENCE SWITCH FOR SERIALLY DISCHARGING PULSES OF CURRENT FROM A HIGH VOLTAGE SOURCE THROUGH THE ELECTRODES, THE SEQUENCE SWITCH COMPRISING:
- A PAIR OF ELECTRICALLY CONDUCTING BRIDGING MEMBERS MOUNTED IN FIXED AXIALLY SPACED AND INSULATED RELATION TOEACH OTHER, MEANS GUIDING THE BRIDGING MEMBERS FOR LINEAR AXIAL RECIPROCATION ALONG A DEFINED PATH, SPRING MEANS FOR MOVING THE BRIDGING MEMBERS RAPIDLY IN ONE DIRECTION AND FOR NORMALLY HOLDING THEM IN AN UNCOCKED POSITION AT ONE END OF THEIR PATH, MEANS FOR MANUALLY MOVING THE BRIDGING MEMBERS IN THE OPPOSITE DIRECTION TO A COCKED POSITION, RELEASABLE LATCH MEANS FOR HOLDING THE BRIDGING MEMBERS IN THEIR COCKED POSITION, MEANS FOR RELEASING THE LATCH MEANS TO CAUSE THE BRIDGING MEMBERS TO MOVE RAPIDLY UNDER THE URGING OF THE SPRING MEANS TOWARDS THEIR UNCOCKED POSITION, A PLURALITY OF AXIALLY SPACED SETS OF CONTACT MEMBERS ADAPTED TO BE MOMENTARILY AND SUCCESSIVELY ENGAGED BY THE SURFACES OF THE BRIDING MEMBERS WHEN THE BRIDGING MEMBERS ARE MOVING FROM THEIR COCKED TO THEIR UNCOCKED POSITION, EACH SET OF CONTACT MEMBERS INCLUDING TWO CONTACTS SEPARATED FROM EACH OTHER BUT LYING IN SUBSTANTIALY THE SAME PLANE AT RIGHT ANGLES TO THE AXIS OF TRAVEL OF THE BRIDGING MEMBERS, EACH SET OF CONTACT MEMBERS BEING AXIALLY SPACED FROM AN ADJACENT SET BY A DISTANCE SUBSTANTIALLY EQUAL TO THE AXIAL DISTANCE BETWEEN THE LEADING EDGE OF THE CONTACT ENGAGING SURFACE OF THE FIRST BRIDGING MEMBER AND THE CORRESPONDING EDGE OF THE SECOND BRIDGING MEMBER, WHEREBY WHEN THE BRIDGING MEMBERS ARE MOVING FROM THEIR COCKED TO THEIR UNCOCKED POSITION THE FIRST BRIDGING MEMBER WILL MOMENTARILY CONNECT TOGETHER THE CONTACTS OF ONE SET OF CONTACT MEMBERS AT THE SAME TIME AS THE SECOND BRIDGING MEMBER MOMENTARILY CONNECTS TOGETHER THE CONTACTS OF AN ADJACENT SET OF CONTACT MEMBERS, AND ELECTRICAL CONDUCTORS CONNECTING THE FIRST CONTACTS OF THE SETS OF CONTACT MEMBERS TO THE HIGH VOLTAGE SOURCE AND THE SECOND CONTACTS OF THE SETS TO THE ELECTRODES.
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1 Claim
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1. IN A CARDIAC DEFIBRILLATOR, IN COMBINATION WITH A PAIR OF ELECTRODES, A SEQUENCE SWITCH FOR SERIALLY DISCHARGING PULSES OF CURRENT FROM A HIGH VOLTAGE SOURCE THROUGH THE ELECTRODES, THE SEQUENCE SWITCH COMPRISING:
- A PAIR OF ELECTRICALLY CONDUCTING BRIDGING MEMBERS MOUNTED IN FIXED AXIALLY SPACED AND INSULATED RELATION TOEACH OTHER, MEANS GUIDING THE BRIDGING MEMBERS FOR LINEAR AXIAL RECIPROCATION ALONG A DEFINED PATH, SPRING MEANS FOR MOVING THE BRIDGING MEMBERS RAPIDLY IN ONE DIRECTION AND FOR NORMALLY HOLDING THEM IN AN UNCOCKED POSITION AT ONE END OF THEIR PATH, MEANS FOR MANUALLY MOVING THE BRIDGING MEMBERS IN THE OPPOSITE DIRECTION TO A COCKED POSITION, RELEASABLE LATCH MEANS FOR HOLDING THE BRIDGING MEMBERS IN THEIR COCKED POSITION, MEANS FOR RELEASING THE LATCH MEANS TO CAUSE THE BRIDGING MEMBERS TO MOVE RAPIDLY UNDER THE URGING OF THE SPRING MEANS TOWARDS THEIR UNCOCKED POSITION, A PLURALITY OF AXIALLY SPACED SETS OF CONTACT MEMBERS ADAPTED TO BE MOMENTARILY AND SUCCESSIVELY ENGAGED BY THE SURFACES OF THE BRIDING MEMBERS WHEN THE BRIDGING MEMBERS ARE MOVING FROM THEIR COCKED TO THEIR UNCOCKED POSITION, EACH SET OF CONTACT MEMBERS INCLUDING TWO CONTACTS SEPARATED FROM EACH OTHER BUT LYING IN SUBSTANTIALY THE SAME PLANE AT RIGHT ANGLES TO THE AXIS OF TRAVEL OF THE BRIDGING MEMBERS, EACH SET OF CONTACT MEMBERS BEING AXIALLY SPACED FROM AN ADJACENT SET BY A DISTANCE SUBSTANTIALLY EQUAL TO THE AXIAL DISTANCE BETWEEN THE LEADING EDGE OF THE CONTACT ENGAGING SURFACE OF THE FIRST BRIDGING MEMBER AND THE CORRESPONDING EDGE OF THE SECOND BRIDGING MEMBER, WHEREBY WHEN THE BRIDGING MEMBERS ARE MOVING FROM THEIR COCKED TO THEIR UNCOCKED POSITION THE FIRST BRIDGING MEMBER WILL MOMENTARILY CONNECT TOGETHER THE CONTACTS OF ONE SET OF CONTACT MEMBERS AT THE SAME TIME AS THE SECOND BRIDGING MEMBER MOMENTARILY CONNECTS TOGETHER THE CONTACTS OF AN ADJACENT SET OF CONTACT MEMBERS, AND ELECTRICAL CONDUCTORS CONNECTING THE FIRST CONTACTS OF THE SETS OF CONTACT MEMBERS TO THE HIGH VOLTAGE SOURCE AND THE SECOND CONTACTS OF THE SETS TO THE ELECTRODES.
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Current AssigneeEarl M. Becker, John J. Bridge
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Original AssigneeEarl M. Becker, John J. Bridge
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InventorsBecker, Earl M., Bridge, John J.
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Application NumberUS04/204,947Time in Patent Office1,205 DaysField of SearchUS Class Current607/5CPC Class CodesA61N 1/39046 User protection from shockA61N 1/3912 Output circuitry therefor, ...H01H 15/02 DetailsH01H 17/00 Switches having flexible op...H01H 3/503 making use of electromagnetsH01H 43/12 stopping automatically afte...
