Percutaneous access device and method for implanting same
US4634422A · kind A · utility
Inventors
Key dates
| Filing date | May 31, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | May 31, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A percutaneous access device (PAD) is provided with a sleeve or separable member which may be detached from the device to enable the culturing of a multilayer fibroblast coating on the member in a stable and undisturbed environment. The member is constructed so that when it is assembled into the device and the device is implanted in a patient, the cultured coating of the member is exposed to the patient's dermis whose fibroblasts will, after a relatively short healing period, merge with the fibroblasts of the coating to form a barrier layer interlocked with the member to prevent epidermal ingrowth or marsupialization of the implanted device. Implantation techniques for further facilitating the formation of the dermal barrier are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.