Medical device components
Medical device components, such as tube-shaped catheter components, are disclosed. In some embodiments, a medical device component includes a region that includes a polyamide having a post buckle fracture tensile strength of at least about 6500 psi.
1. A component of a balloon catheter, comprising:
an elongate shaft including a hypotube and a sheath disposed on the hypotube;
wherein the elongate shaft includes a region that comprises a polyamide, the polyamide having a post buckle fracture tensile strength of at least about 6500 psi, wherein the region of the component is tube-shaped.
2. The component of claim 1 , wherein the region that comprises a polyamide includes a first layer and a second layer, the first layer having a different flexibility from the second layer.
3. The component of claim 1 , wherein the post buckle fracture tensile strength of the polyamide is at least about 8000 psi.
4. The component of claim 1 , wherein the polyamide has a tensile strength of at least about 21,000 psi.
5. The component of claim 1 , wherein the polyamide has a hoop stress of at least about 3300 psi.
6. The component of claim 1 , wherein the polyamide comprises a copolymer.
7. A tube-shaped portion of a catheter, the tube-shaped portion including a hypotube and a sheath disposed on the hypotube, the sheath including a region that comprises a polyamide, the polyamide having a post buckle fracture tensile strength of at least about 6500 psi.
8. The tube-shaped portion of claim 7 , wherein the sheath comprises a first layer and a second layer, the first layer having a different flexibility from the second layer.
9. The tube-shaped portion of claim 7 , wherein the post buckle fracture tensile strength of the polyamide is at least about 8000 psi.
10. The tube-shaped portion of claim 7 , wherein the polyamide has a tensile strength of at least about 21,000 psi.
11. The tube-shaped portion of claim 7 , wherein the polyamide has a hoop stress of at least about 3300 psi.
12. The tube-shaped portion of a catheter of claim 7 , wherein the polyamide comprises a copolymer.
13. A balloon catheter, comprising:
a hypotube;
a sheath disposed on the hypotube, wherein the sheath includes a polyamide, the polyamide having a post buckle fracture tensile strength of at least about 6500 psi,
a midshaft coupled to the sheath;
a distal outer member attached to the midshaft;
a distal inner member at least partially disposed within the distal inner member; and
a balloon attached to the distal outer member.
14. A balloon catheter, comprising:
a hypotube;
a sheath disposed on the hypotube, the sheath including a material having a post buckle fracture tensile strength of at least about 6500 psi.
15. The balloon catheter of claim 14 , wherein the material is selected from the group consisting of polyamides and copolymers of polyamides.