Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion
US11918754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Jan 7, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1082
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A ureteral catheter for placement in a kidney, renal pelvis, and/or in a ureter adjacent to the renal pelvis of a patient, includes: an elongated tube having a proximal end, a distal end, and a sidewall extending therebetween defining at least one drainage lumen extending through the tube, wherein a proximal portion of the elongated tube is essentially free of or free of openings; and an expandable retention portion which defines a three-dimensional shape positioned to maintain fluid flow from the kidney through at least the distal end of the tube and inhibit tissue of the ureter or renal pelvis from occluding the at least one drainage lumen at the distal end of the elongated tube upon application of negative pressure through the drainage lumen, wherein the three-dimensional space defined by the expandable retention portion encloses at least a portion of the distal end of the elongated tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.