Spooling pullback for catheter imaging and therapy cores
US5797858A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Mar 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pullback device for axial positioning of a core of an intravascular catheter, including a pullback chassis having a catheter extension extending therefrom for attachment of the intravascular sheath with a distal passage therethrough and an interface unit extension for attachment of an interface unit with a proximal passage therethrough. An intermediate sheath receives and encloses the intravascular catheter drive cable and has a pullback loop for enclosing the drive cable. The pullback loop includes a fixed segment attached to the proximal passage through the interface unit extension and a variable segment extending towards the distal end of the intravascular sheath and having a sliding section adjoining the distal end of the intravascular sheath. When the catheter is attached to the device, the catheter drive cable extends from the proximate end of the intravascular catheter and through the distal passage, the intermediate sheath and the proximal passage for connection to the interface unit wherein the drive cable forms a loop contained within the intermediate sheath pullback loop forming a loop between the distal and proximal passages. The intermediate sheath is attached to an …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.