Medical device components and processes
View Patent ↗Medical device components and processes are disclosed. For example, tube-shaped catheter components and processes of making tube-shaped catheter components are disclosed. Devices and systems, including medical devices and systems, such as catheters, containing tube-shaped catheter components are also disclosed.
1. A balloon catheter having a proximal end and a distal end, comprising:
a catheter shaft;
a balloon having a proximal end and a distal end, the balloon disposed on the catheter shaft such that a length of the catheter shaft extending between the proximal end of the catheter shaft and the proximal end of the balloon has no balloons attached thereto,
wherein the catheter shaft includes a region that comprises a polyamide having a tensile strength of at least about 21,000 psi, wherein the region is tube-shaped and has a wall thickness of about 0.001 inch to about 0.04 inch, wherein the region is at least partially disposed proximally of the proximal end of the balloon.
2. The balloon catheter of claim 1 , wherein the region comprises a first layer and a second layer, the first layer having a different flexibility from the second layer.
3. The balloon catheter of claim 1 , wherein the tensile strength of the polyamide is at least about 22,500 psi.
4. The balloon catheter of claim 1 , wherein the polyamide has a hoop stress of at least about 3300 psi.
5. The balloon catheter of claim 1 , wherein the polyamide comprises a copolymer.
6. The balloon catheter of claim 1 , wherein the region has a wall thickness of about 0.001 inch to about 0.003 inch.
7. The balloon catheter of claim 1 , wherein the region defines a distal inner lumen that extends through the balloon.
8. The balloon catheter of claim 7 , wherein the distal inner lumen is a guide wire lumen.
9. The balloon catheter of claim 1 , further comprising a guide wire hub and wherein the region is a mid-shaft portion having a proximal end longitudinally separated from the guide wire hub and a distal end longitudinally separated from the balloon.
10. The balloon catheter of claim 1 , wherein the region defines a lumen in fluid communication with the balloon for carrying inflation fluid.
11. The balloon catheter of claim 1 , wherein the region defines an outer wall of the catheter shaft.
12. The balloon catheter of claim 11 , wherein the region is attached to a proximal waist of the balloon.
13. The balloon catheter of claim 1 , wherein the region has a wall thickness of about 0.003 inch to about 0.04 inch.
14. A balloon catheter having a proximal end and a distal end, comprising
a catheter shaft;
a balloon having a proximal end and a distal end, the balloon disposed on the catheter shaft such that a length of the catheter shaft extending between the proximal end of the catheter shaft and the proximal end of the balloon has no balloons attached thereto,
wherein the catheter shaft includes a region that comprises a polyamide having a hoop stress of at least about 3300 psi, wherein the region is tube-shaped and has a wall thickness of about 0.001 inch to about 0.04 inch, wherein the region is at least partially disposed proximally of the proximal end of the balloon.
15. The balloon catheter of claim 14 , wherein the region comprises a first layer and a second layer, the first layer having a different flexibility from the second layer.
16. The balloon catheter of claim 14 , wherein the hoop stress of the polyamide is at least about 3500 psi.
17. The balloon catheter of claim 14 , wherein the polyamide comprises a copolymer.
18. The balloon catheter of claim 14 , wherein the region has a wall thickness of about 0.001 inch to about 0.003 inch.
19. The balloon catheter of claim 14 , wherein the region has a wall thickness of about 0.003 inch to about 0.04 inch.