Systems and methods for reducing or preventing backflow in a delivery system
US10065016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Dec 19, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0693
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods are disclosed herein that generally involve CED devices with various features for reducing or preventing backflow. In some embodiments, CED devices include a tissue-receiving space disposed proximal to a distal fluid outlet. Tissue can be compressed into or pinched/pinned by the tissue-receiving space as the device is inserted into a target region of a patient, thereby forming a seal that reduces or prevents proximal backflow of fluid ejected from the outlet beyond the tissue-receiving space. In some embodiments, CED devices include a bullet-shaped nose proximal to a distal fluid outlet. The bullet-shaped nose forms a good seal with surrounding tissue and helps reduce or prevent backflow of infused fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.