Composite radiopaque intracorporeal product
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorMarc Mehrzad Jalisi
Life of this patent
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Abstract
The invention is directed to a guidewire having a distal flexible member, such as a helical coil, which is formed with at least one highly radiopaque component and at least one high strength component. In a presently preferred embodiment, the highly radiopaque component is at least 10% and less than about 60% of the transverse cross-section of the flexible member, preferably at least 20% but less than 40%. The highly radiopaque component may be formed of radiopaque material such as platinum, gold, iridium and the like and the high strength component may be formed of a material such as tantalum, stainless steel, NiTi alloys, Co—Cr—Mo alloys and the like.
Claims15
A guidewire for intraluminal advancement of a medical device within a patient, comprising:
- a) an elongated core member which has a proximal core section and a distal core section;
- and
- b) a flexible body which is disposed about and secured to a portion of the distal core section and which is formed of a wire having a highly radiopaque exterior formed of at least one material selected from the group consisting of platinum, palladium, iridium and alloys thereof and a high strength radiopaque interior which is made from a material selected from the group consisting of tantalum, tungsten and alloys thereof which is less radiopaque than the material of the exterior.
A guidewire for intraluminal advancement of a medical device within a patient, comprising:
- a) an elongated core member which has a proximal core section and a distal core section having at least one taper in the distal direction;
- b) a first helical coil which is disposed about and secured to a portion of the distal core section and which is formed of a wire having a highly radiopaque exterior formed of at least one material selected from the group consisting of platinum, palladium, iridium and alloys thereof and high strength interior formed of at least one material selected from the group consisting of tantalum, tungsten and alloys thereof;
- and
- c) a second helical coil which is disposed about and secured to a portion of the distal core section and which is disposed proximal to the first helical coil.
A flexible body for an intracorporeal device comprising a helically shaped wire having a transverse cross-sectional area, a high strength interior core and a highly radiopaque exterior cladding that is at least 10% but not more than 60% of the transverse cross-sectional area of the flexible body.
A guidewire for intraluminal advancement of a medical device within a patient, comprising:
- a) an elongated core member which has a proximal core section and a distal core section;
- and
- b) a flexible body disposed about and secured to a portion of the distal core section, and which if formed of an element having a transverse cross sectional area, and which has a highly radiopaque component comprising at least 10% but not more than 60% of the transverse cross-sectional area of the flexible body and a high strength component.
Dependencies are inferred from the claim text.