Surgery – Truss – Pad
Patent
1993-09-14
1994-12-20
Hindenburg, Max
Surgery
Truss
Pad
A61B 500
Patent
active
053738560
ABSTRACT:
The invention concerns a catheter guide (1) comprising a wire (2) having a proximal part (6) of approximately constant cross section and a tapered distal part (8) and a supple protective sheath (4) formed by a helicoidal spring extended at least around the length of the tapered distal part (8) the wire (2) being fixed to the sheath (4) by at least the free end of its proximal part by means of a first solder joint (10) at a proximal part (12) of the sheath, the free end (14) of the distal part of the sheath (4) being provided with a second solder joint (16) forming a rounded end, wherein the spring forming the sheath comprises, along its entire length, a first strand (18) wound with a first pitch for forming a series of first windings S18 and at least a second strand (20,22,24) wound with a second pitch of a value slightly greater than that of the first pitch for forming a series of second windings (S20,S22,S24) such that the first windings (S18) exert a compressive force on the second windings (S20, S22, S24).
REFERENCES:
patent: 4003369 (1977-01-01), Heilman et al.
patent: 4020829 (1977-05-01), Willson et al.
patent: 4721117 (1988-01-01), Mar et al.
patent: 5241970 (1993-09-01), Johlin et al.
Hindenburg Max
Nivarox-FAR S.A.
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