US Patent No: 5,488,959

Number of patents in Portfolio can not be more than 2000

Medical guidewire and welding process

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process is provided which is particularly suitable for manufacturing medical guidewires. The resulting products have a weld that has good pull strength and is of minimum brittleness even when one of the components being welded together is a fine wire of material that is susceptible to damage and severe deterioration when subjected to harsh heating conditions. The invention is particularly suitable when that material is a Nitinol alloy. The process supports the other component to be welded such as a coil within a collet such that a substantial portion of it projects beyond the collet and is not supported thereby. A heat source renders this projecting portion molten, after which the other component made of Nitinol, for example, is embedded into the molten mass, usually still under the influence of the heat source, to thereby effect a joining which, after cooling, provides the improved weld without imparting brittleness to either component.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CORDIS CORPORATIONMIAMI LAKES, FL834

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ales, Francisco Hialeah, FL 2 58

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ADVANCED CARDIOVASCULAR SYSTEMS, INC. (4)
4,538,622 Guide wire for catheters 319 1983
4,619,274 Torsional guide wire with attenuated diameter 155 1985
RE33911 Catheter guide wire with short spring tip and method of using the same 85 1986
4,721,117 Torsionally stabilized guide wire with outer jacket 225 1986
 
TERUMO KABUSHIKI KAISHA (2)
4,925,445 Guide wire for catheter 396 1989
5,069,226 Catheter guidewire with pseudo elastic shape memory alloy 259 1990
 
CORDIS CORPORATION (1)
4,846,186 Flexible guidewire 196 1988
 
EV3 INC. (1)
4,984,581 Flexible guide having two-way shape memory alloy 397 1988
 
MEDTRONIC AVE, INC. (1)
4,763,647 Dual coil steerable guidewire 148 1987
 
MEDTRONIC, INC. (1)
4,665,906 Medical devices incorporating sim alloy elements 1266 1986
 
Nippon Zeon Co., Ltd. (1)
4,969,890 Catheter 450 1988
 
The United States of America as represented by the Secretary of the Navy (1)
4,283,233 Method of modifying the transition temperature range of TiNi base shape memory alloys 36 1980
 
VERSAFLEX DELIVERY SYSTEMS INC. (1)
4,813,434 Steerable guidewire with deflectable tip 82 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BOSTON SCIENTIFIC SCIMED, INC. (17)
6,306,105 High performance coil wire 103 1998
7,955,272 High performance coil wire 1 2001
6,832,715 Guidewire distal tip soldering method 21 2001
7,077,811 Guidewire tip construction 7 2002
8,113,916 Straightening and centerless grinding of wire for use with medical devices 0 2003
7,044,921 Medical device with changeable tip flexibility 8 2003
8,167,821 Multiple diameter guidewire 0 2003
7,182,735 Elongated intracorporal medical device 49 2003
7,169,118 Elongate medical device with distal cap 11 2003
7,785,273 Guidewire with reinforcing member 1 2003
7,237,313 Elongated medical device for intracorporal use 26 2003
7,316,656 Elongated intracorporal medical device 2 2003
8,222,566 Elongated intracorporal medical device 0 2005
7,998,088 Guidewire tip construction 0 2006
8,022,331 Method of making elongated medical devices 0 2007
8,137,292 Elongated medical device for intracorporal use 0 2007
7,841,994 Medical device for crossing an occlusion in a vessel 0 2007
 
COOK MEDICAL TECHNOLOGIES LLC (12)
6,254,550 Preformed wire guide 114 1999
6,383,146 Guidewire 77 2000
6,589,227 Endovascular medical device with plurality of wires 35 2001
7,025,758 Endovascular medical device with plurality of wires 16 2003
8,075,497 Wire guide having distal coupling tip 0 2006
8,137,291 Wire guide having distal coupling tip 0 2006
7,758,565 Identifiable wire guide 1 2006
7,731,693 Coupling wire guide 1 2006
7,811,238 Wire guide having distal coupling tip 0 2007
7,798,980 Wire guide having distal coupling tip for attachment to a previously introduced wire guide 1 2007
7,785,275 Wire guide having distal coupling tip 0 2007
8,133,190 Weldable wire guide with distal coupling tip 0 2007
 
ABBOTT CARDIOVASCULAR SYSTEMS INC. (2)
7,998,090 Guide wire with core having welded wire segments 1 2009
8,454,537 Guide wire with core having welded wire segments 0 2011
 
BOSTON SCIENTIFIC CORPORATION (2)
6,000,601 Welding method 5 1996
6,379,392 Welding method 23 2000
 
BRIDGEPOINT MEDICAL, INC. (2)
8,202,246 Crossing occlusions in blood vessels 0 2009
8,337,425 Endovascular device with a tissue piercing distal probe and associated methods 0 2009
 
SCIMED LIFE SYSTEMS, INC. (2)
7,470,239 High performance coil wire 4 2000
7,946,999 High performance coil wire 0 2008
 
TARGET THERAPEUTICS, INC. (2)
5,833,631 Fiber tip guidewire 42 1996
5,827,201 Micro-braided guidewire 79 1996
 
CODMAN & SHURTLEFF, INC. (1)
5,733,400 Intravascular catheter 71 1996
 
COOK INCORPORATED (1)
7,901,367 Wire guide advancement system 0 2006
 
COOK, WILLIAM (1)
6,348,041 Guidewire 95 2000
 
CORDIS CORPORATION (1)
6,039,699 Stiff catheter guidewire with flexible distal portion 53 1996
 
EDISON WELDING INSTITUTE, INC. (1)
6,875,949 Method of welding titanium and titanium based alloys to ferrous metals 12 2003
 
MEDTRONIC AVE, INC. (1)
5,776,100 Nickel titanium guide wires for occlusion and drug delivery 38 1996
 
NEOMETRICS, INC. (1)
8,308,658 Medical guidewire 0 2007
 
SCIMED SYSTEMS, INC. (1)
8,377,035 Unbalanced reinforcement members for medical device 0 2003