Intravascular devices systems and methods with an adhesively attached shaping ribbon
The present disclosure is directed to intravascular devices, systems, and methods having a core member coupled to a shaping ribbon with an adhesive. In some aspects, a sensing guide wire is provided. The sensing guide wire can include a flexible elongate member; and a sensing element coupled to a distal portion of the flexible elongate member, wherein the distal portion of the flexible elongate member includes: a core member; and a shaping ribbon fixedly secured to the core member by an adhesive and at least one connecting sleeve. In other aspects, methods of forming a sensing guide wire are provided.
1. A sensing guide wire, comprising:
a flexible elongate member comprising a proximal portion and a distal portion;
a housing structure coupled to the distal portion of the flexible elongate member; and
a sensing element disposed within the housing structure,
wherein the distal portion of the flexible elongate member includes:
a core member; and
a shaping ribbon comprising:
a proximal end at a proximal-most point of the shaping ribbon;
a distal end at a distal-most point of the shaping ribbon;
a length that extends from the proximal-most point to the distal-most point of the shaping ribbon; and
a flattened shape comprising a thickness and a width larger than the thickness, wherein a size of the flattened shape is the same at every point along the length of the shaping ribbon from the proximal-most point to the distal-most point,
wherein the shaping ribbon is fixedly secured to the core member by an adhesive and a connecting sleeve such that the connecting sleeve is disposed distal to and spaced from the sensing element.
2. The guide wire of claim 1 , wherein the core member is formed of nitinol.
3. The guide wire of claim 1 , further comprising a rounded tip coupled to the distal portion of the flexible elongate member, wherein the rounded tip is soldered to the distal portion of the flexible elongate member.
4. The guide wire of claim 1 , wherein the shaping ribbon extends distally from the core member.
5. The guide wire of claim 1 , wherein the adhesive includes an adhesive selected from a group of adhesives consisting of urethane adhesives, silicon adhesives, epoxies, and acrylates.
6. The guide wire of claim 1 , wherein the connecting sleeve comprises a polymer connecting sleeve.
7. The guide wire of claim 1 , wherein the sensing element includes a pressure sensor or a flow sensor.
8. The guide wire of claim 1 , wherein the shaping ribbon is coupled to the housing structure.
9. The guide wire of claim 8 , wherein the connecting sleeve is positioned around the core member and a first segment of the length of the shaping ribbon.
10. The guide wire of claim 9 , wherein the connecting sleeve is secured around an outer surface of the first segment of the length of the shaping ribbon and an outer surface of the core member.
11. The guide wire of claim 9 , wherein a second segment of the length of the shaping ribbon extends:
proximally from the connecting sleeve;
proximate to the core member; and
between the housing structure and the connecting sleeve.
12. The guide wire of claim 11 ,
wherein the shaping ribbon is fixedly secured to the core member by the adhesive and a plurality of connecting sleeves,
wherein the plurality of connecting sleeves comprises the connecting sleeve and an additional connecting sleeve spaced from the connecting sleeve.
13. The guide wire of claim 12 , wherein a first length of the connecting sleeve is configured to provide a first stiffness at a first location of the distal portion of the flexible elongate member and a second length of the additional connecting sleeve is configured to provide a second stiffness at a second location of the distal portion of the flexible elongate member.
14. The guide wire of claim 13 , wherein the first length is different from the second length.
15. The guide wire of claim 12 ,
wherein the shaping ribbon is fixedly secured to the core member by the adhesive and an additional adhesive different from the adhesive,
wherein the adhesive is disposed within the connecting sleeve and the additional adhesive is disposed within the additional connecting sleeve.
16. The guide wire of claim 12 , wherein the additional connecting sleeve is disposed distal to the sensing element.
17. The guide wire of claim 12 , wherein a second segment of the shaping ribbon extends between the connecting sleeve and the additional connecting sleeve.
18. The guide wire of claim 1 ,
wherein the proximal end of the shaping ribbon is proximal of and spaced from a portion of the core member around which the connecting sleeve is positioned, and
wherein a proximal portion of the connecting sleeve is proximal of a distal end of the core member.
19. The guide wire of claim 1 , wherein the connecting sleeve is positioned around a distal end of the core member.
20. The guide wire of claim 1 , wherein the shaping ribbon is formed of stainless steel.