Patent ID: 8308658
Filing Date: 2012-11-13
Classification: A61M

Abstract:
1. A medical guidewire, comprising: a core having a proximal end and a distal end; a wire coil, the core extending through the wire coil, the wire coil in contact with a distal end of the core and extending proximally from the core distal end along an extent of the core, the wire coil having a proximal end portion with spaced apart coil turns with gaps formed between the coil turns, wherein the core has a distally facing shoulder provided uniformly around the core, wherein the shoulder extends axially into the core by a first distance and forms a platform or seat for the wire coil proximal end portion, and wherein the wire coil proximal end portion is seated proximate to the distally facing shoulder; and a bonding agent joining the core to the proximal end portion of the wire coil, the bonding agent comprising an adhesive, the bonding agent filling the gaps between a plurality of the spaced apart coil turns at the proximal end portion of the wire coil, whereby the bonding agent filled in the gaps provides a significant junction area between the core and the wire coil as well as flexibility at the junction area during advancement of the guidewire through a patient's body lumens or vessels, the bonding agent entirely filling area between the plurality of spaced apart coil turns at the proximal end portion of the wire coil and the core.