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US 11,890,690 B2Granted
Preparation of micro-electrodes
AssigneeBiosense Webster (Israel) Ltd.
InventorsAssaf Govari, Christopher Thomas Beeckler, Joseph Thomas Keyes
Life of this patent
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Abstract
A method, consisting of providing a metal wire having a wire diameter and an end, and positioning a conductor at a distance from the end of the wire. The method further includes creating an electrical discharge between the conductor and the end, while setting the distance and an electrical potential of the discharge, so as to create a bead of a predefined size on the end. The method also includes assembling the wire with the created bead into an invasive probe, so that the bead is positioned at an outer surface of the probe.
Claims14
An apparatus comprising:
- (a) a metal wire comprising:
- (i) a proximal end defining a wire diameter, and
- (ii) a distal end that includes a solderless spherical bead defining a spherical bead surface and a bead diameter that is greater than the wire diameter;
- and
- (b) a conductor wire with a proximal end that is directly coupled with the proximal end of the metal wire at a joint, the joint being soldered or welded;
- (c) an invasive probe that includes a distal end, the distal end of the invasive probe comprising:
- (i) an electrically conductive dome with a wall comprising a circumferential portion and an end portion and defining a cavity therein;
- (ii) an inner surface,
- (iii) an outer surface,
- (iv) at least one irrigation aperture at one location in the dome, and
- (v) at least one assembly aperture at another location in the dome extending between the inner and outer surfaces, wherein the solderless spherical bead is positioned at least partially within the assembly aperture and fixedly sealed therein with adhesive in one of three positions of (i) the spherical bead surface protruding past the outer surface of the distal end of the invasive probe by a radius of the spherical bead;
- (ii) the spherical bead surface being flush with the outer surface, or (iii) the spherical bead surface being recessed from the outer surface by the radius of the spherical bead;
- and
- (d) an elongated electrically-insulative expandable sleeve with a distal end within the assembly aperture, generally proximal of the solderless spherical bead, and circumferentially surrounding the proximal end of the metal wire and at least a distal portion of the conductor wire extending through the cavity.
11 more elements
An apparatus comprising:
- (a) an inert metal wire comprising:
- (i) a proximal end defining a wire diameter of approximately 175 microns;
- and
- (ii) a distal end that includes a solderless spherical bead defining a bead diameter of approximately 400 microns;
- and
- (b) a conductor wire directly coupled with the proximal end of the metal wire at a joint that is soldered or welded, the conductor wire having a diameter lesser than the wire diameter;
- and
- (c) an invasive probe that includes an electrically-conductive distal end, the distal end of the invasive probe comprising a shell with:
- (i) an inner surface,
- (ii) an outer surface, and
- (iii) at least one aperture extending between the inner and outer surfaces, wherein the solderless spherical bead is positioned at least partially within the aperture.
8 more elements
An apparatus comprising:
- (a) a metal wire comprising:
- (i) a proximal end defining a wire diameter, and
- (ii) a distal end that includes a solderless spherical bead defining a spherical bead surface and a bead diameter that is greater than the wire diameter;
- and
- (b) a conductor wire with a proximal end that is directly coupled with the proximal end of the metal wire at a joint, the joint being soldered or welded and
- (c) an invasive probe that includes a distal end, the distal end of the invasive probe comprising:
- (i) an electrically conductive dome with a wall comprising a circumferential portion and an end portion and defining a cavity therein;
- (ii) an inner surface,
- (iii) an outer surface,
- (iv) at least one irrigation aperture at one location in the dome, and
- (v) at least one assembly aperture at another location in the dome extending between the inner and outer surfaces, wherein the solderless spherical bead is positioned at least partially within the assembly aperture and fixedly sealed therein with adhesive in one of three positions of (i) the spherical bead surface protruding past the outer surface of the distal end of the invasive probe by a radius of the spherical bead;
- (ii) the spherical bead surface being flush with the outer surface, or (iii) the spherical bead surface being recessed from the outer surface by the radius of the spherical bead.
9 more elements
Dependencies are inferred from the claim text.