CA1103761A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Electrode assembly for sensing heart activity
Assignee: HP Inc
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Filing: 1977-12-21
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Granted: 1981-06-23
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Expires: 1997-12-21
Abstract
Abstract ELECTRODE ASSEMBLY FOR SENSING HEART ACTIVITY Abstract of the Disclosure An electrode assembly for sensing heart activity from body tissue includes a flexible guide tube, a spiral retaining coil disposed in one end of the guide tube, a handle disposed at the other end of the guide tube, and twisted wires inside the tube interconnecting the retain-ing coil and the handle. Rotation of the handle rotates the twisted wires, which in turn rotate the retaining coil to screw it into body tissue. Thereafter, the guide tube and handle are disengaged from the retaining coil and wires. A safety stop releasably disposed on the guide tube limites the rotation of the retaining coil and thus limits its depth of penetration into the body tissue.
Inventors
- 👤 John B. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-31 07:14
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/43; A61B5/4306; A61B5/4343; A61B5/4362; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/288; A61B5/316; A61B5/318; A61B5/344
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
An electrode apparatus for sensing heart activity from body tissue comprising: a guide tube having proximal and distal ends; a rotatable electrode assembly including a holder disposed in said guide tube at the proximal end thereof, and two electrode elements disposed on said holder, one of said electrode elements being an electrically conduc-tive helical retaining coil extending toward the proximal end of said guide tube; a pair of rotatable torque-trans-mitting twisted wires attached to said holder to rotate said retaining coil disposed thereon, said wires extending through said guide tube to the distal end thereof, said twisted wires being signal leads electrically coupled to said two electrode elements, respectively; and a handle rotatably disposed at the distal end of said guide tube, said handle being in engagement with said twisted wires, said handle being coupled to apply torque to said twisted wires to rotate said holder by rotating said wires and screw said retaining coil into body tissue.
Claim 2
Dependent Claim
158 words
An electrode apparatus for sensing heart activity from body tissue comprising: a guide tube having proximal and distal ends; a rotatable electrode assembly including a holder disposed in said guide tube at the proximal end thereof, and two electrode elements disposed on said holder, one of said electrode elements being an electrically conduc-tive helical retaining coil extending toward the proximal end of said guide tube; a pair of rotatable torque-trans-mitting twisted wires attached to said holder to rotate said retaining coil disposed thereon, said wires extending through said guide tube to the distal end thereof, said twisted wires being signal leads electrically coupled to said two electrode elements, respectively; and a handle rotatably disposed at the distal end of said guide tube, said handle being in engagement with said twisted wires, said handle being coupled to apply torque to said twisted wires to rotate said holder by rotating said wires and screw said retaining coil into body tissue.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 wherein said handle threadedly engages the distal end of said guide tube thereby to permit displacement of said handle from said guide tube along the longitudinal axis of said guide tube by rotation of said handle.
Claim 4
Dependent Claim
33 words
The apparatus of claim 2 further including an externally threaded collar attached to the distal end of said guide tube and wherein said handle has an internally threaded portion engaging said threaded collar.
Claim 5
Dependent Claim
17 words
The apparatus of claim 1 wherein said handle has a slot therein releasably engaging said twisted wires.
Claim 6
Dependent Claim
36 words
The apparatus of claim 4 wherein said twisted wires are folded back on themselves at the distal end of said guide tube, the folded end of said wires being disposed in the slot of said handle.
Claim 7
Dependent Claim
50 words
The apparatus of claim 5 wherein said handle is movable along the longitudinal axis of said guide tube and wherein the slot in said handle engaging said wires is dis-posed on said longitudinal axis, thereby to permit longitu-dinal disengagement of the said wires from said slot by moving said handle.
References Cited (Backward Citations)
No citation records indexed.
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