Interventional medical systems, catheters, and subassemblies
US9844664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2015 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Sep 2, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2001/0578
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An engagement subassembly of a catheter, for retrieving an implanted medical device, may include at least three segments or, alternately, capture members being spring biased outward from a longitudinal axis of the subassembly, wherein a device receptacle of the catheter forces the capture members/segments, against the spring bias thereof, toward the axis. Each capture member includes a spring-biased wire and a grip, which is located between proximal and distal portions of the corresponding wire, and which is configured to interlock within a gap between a device attachment feature and housing; a length of each wire distal portion may be approximately equal to that of the device housing. An interlocking edge of each segment interlocks within the gap between the attachment feature and housing, when a distal-facing surface of each segment, which tapers outward from the axis in a distal direction, comes into confronting engagement with the device housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.