主权项 |
1. A monopolar snare comprising:
a first snare portion defined by an electrical conductor that has a first length, a first proximal end, and a first distal end, said first snare portion being devoid of electrical insulation extending from the first proximal end towards the first distal end, a second snare portion defined by a wire having a second length equal to the first length, a second proximal end, and a second distal end, said second snare portion having electrical insulation element covering said wire from said second distal end to said second proximal end; a catheter having an open end; and a manipulation wire movably disposed inside said catheter,wherein
(i) each of the first and second proximal ends is affixed to an end of the manipulation wire nearest said open end, and (ii) the first and second distal ends are affixed to one another to form a distal connecting portion that closes a symmetrical loop of said snare, the first snare portion defining a first half of said symmetrical loop and the second snare portion defining a second half of said symmetrical loop. |