Intravascular devices, systems, and methods having an adhesive filled flexible element

Abstract

Intravascular devices are disclosed, comprising a core member and a radiopaque marker element formed of a single length of material wound in a coil, wherein a first pitch of a first portion of the coil differs from a second pitch of a second portion of the coil.

1 . A guidewire comprising:
 a core member;   a radiopaque marker element formed of a single length of material wound in a coil, wherein the core member extends within a lumen of the coil,   wherein a first pitch of a first portion of the coil differs from a second pitch of a second portion of the coil; and   the core member is coupled to the radiopaque marker element.   
     
     
         2 . The guidewire of  claim 1 , comprising multiple portions of the coil having the first pitch and multiple portions of the coil having the second pitch, wherein the portions with different pitches alternate along the length of the core member. 
     
     
         3 . The guidewire of  claim 2 , wherein a distance between consecutive portions of the coil having the first pitch is in the range of 0.5 to 5 cm. 
     
     
         4 . The guidewire of  claim 1 , wherein a width of the first portion of the coil is in the range of 1.0 to 5 mm. 
     
     
         5 . The guidewire of  claim 4 , wherein the first portion of the coil has closed pitch of tightly compressed turns and the second portion of the coil has an open pitch in the range of 1.1938 to 1.3462 mm. 
     
     
         6 . The guidewire according to  claim 1 , wherein the material wound in coil is coated with a radiopaque material. 
     
     
         7 . The guidewire of  claim 1 , wherein the radiopaque marker element is positioned within a polymer tube and is embedded in flexible adhesive. 
     
     
         8 . The guidewire of  claim 7 , further comprising a sensing element coupled to the polymer tube. 
     
     
         9 . The guide wire of  claim 8 , wherein the sensing element includes a pressure sensor and/or a flow sensor.