DermaPort: A Novel Ported Vascular Access System for Hemodialysis
| Autor: | Thomas J Lobl, Buzz Moran, Abram D Janis |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Biomedical Engineering Biophysics Hemodialysis Catheter Vascular access Bioengineering 030204 cardiovascular system & hematology Biomaterials 03 medical and health sciences 0302 clinical medicine Port (medical) Catheters Indwelling Renal Dialysis Materials Testing Medicine Animals Humans Sheep business.industry General Medicine Marsupialization Surgery Clinical trial Catheter 030228 respiratory system Female Implant Hemodialysis Rabbits business Vascular Access Devices |
| Zdroj: | ASAIO journal (American Society for Artificial Internal Organs : 1992). 66(1) |
| ISSN: | 1538-943X |
| Popis: | Safe, ported access to the body for hemodialysis and other medical uses is increasingly necessary for modern medical therapy. Long-term hemodialysis offers unique challenges with its requirements for high blood flow, chronic implantation, and risks of infection. Although widely used, the polyester, cuffed, delete word and space hemodialysis catheter is far from ideal, and there is a need for an improved vascular access system to allow catheter adjustment and replacement, to reduce infections and to reduce medical costs. The DermaPort ported vascular access system (PVAS) was developed to meet this need. This report describes the design and testing of the PVAS port in vitro and in vivo. The results demonstrate that the system provides superior tissue integration coupled with infection-resisting slidability, allowing reposition and exchange of an indwelling catheter. Within 3 weeks, there was strong tissue ingrowth and establishment of a sterile barrier and over 13 weeks there was no evidence of infection or marsupialization. Additionally, an explanted PVAS sample from a 38 patient human clinical study showed the bulk of the metal mesh was associated with a macrophage-giant cell response and contained collagen and vascular elements. From these data, we conclude that the PVAS permitted stable ported access following a single stage implant procedure. |
| Databáze: | OpenAIRE |
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