Tissue-penetrating catheter device
US4763667A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Sep 19, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2010/045
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tissue-penetrating catheter device for use within the body consists of: an outer catheter assembly including an outer catheter having distal and proximal ends, and a terminal member joined to the proximal end; an inner catheter assembly including an inner catheter extending within the outer catheter and having distal and proximal ends, and defining a conduit therethrough, a fluid connector at the proximal end for connecting the conduit to a fluid flow device, and a tissue-penetrating element, e.g., a needle, at the distal end sized to enter the distal end of the outer catheter. Also included are: structure for moving the inner catheter axially with respect to the outer catheter in a manner to move the needle axially between a protected position in which the tissue-penetrating means is disposed within the outer catheter and a projected position with the needle projecting beyond the outer catheter, exposed to enter tissue; and a pair of cooperating stop surfaces associated with respective portions of the catheter assemblies for limiting the distance of relative distal axial movement of the catheters. One of the stop surfaces is carried by a presettable, axially adjustable member ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.