Devices and methods for local delivery of drug to upper urinary tract
US10010400B2 · kind B2 · utility
2Cited by
41References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Mar 30, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0068
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Drug delivery devices include a flexible elongate body having a bladder end portion, a kidney end portion, and a drug lumen extending therebetween; and a drug reservoir which is located at the bladder end portion, contains a drug, and is defined at least in part by a semi-permeable wall. Methods include inserting the device into the ureter of a patient and permitting water in the bladder to diffuse through the semi-permeable wall to create an osmotic pressure to pump the drug through the drug lumen and out of the device at the kidney end portion and into the renal pelvis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.