Patent ID: 11969568
Assignee: GYRUS ACMI, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A ureteral stent comprising:
a first end comprising a retention feature, wherein the retention feature comprises a coiled portion forming a substantially spherical periphery shape, the coiled portion having a fluid entrance aperture into the coiled portion at a distal end of the coiled portion, wherein the first end is configured to be located in a kidney of a patient;
a second end opposite the first end; and
a middle portion between the first end and the second end, the middle portion comprising a conduit for flow of fluid from the first end to the second end,
wherein the coiled portion extends towards the middle portion from the first end,
where the first end is configured to be located in a kidney of a patient, where a distal end of the substantially spherical periphery shape has a fluid entrance aperture into the coiled portion, and wherein the coiled portion forms a substantially closed tube between the fluid entrance aperture and the middle portion.