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Definition
 
enEnglish
Polytetrafluoroethylene definition: Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
Sutures, Synthetic, Nonabsorbable, Polytetrafluoroethylene definition: Synthetic sutures made of expanded polytetrafluoroethylene (ePTFE, also known as Teflon), a nonabsorbable (i.e., nonbiodegradable) polymer. These sutures are typically available in sterile monofilament uncoated thread sections (e.g., 18, 30 in [45, 76 cm] long) attached to a single-use needle as an integral device; they are frequently colored for easy identification during surgery. Polytetrafluoroethylene nonabsorbable synthetic sutures keep their tensile strength for very long periods of time and are not absorbed by tissues; their intended use includes vessel and vessel-graft anastomosis and other internal surgical procedures (e.g., hernia repair).
SUTURE, SURGICAL, NONABSORBABLE, EXPANDED, POLYTETRAFLOUROETHYLENE definition: Nonabsorbable expanded polytetrafluoroethylene (ePTFE) surgical suture is a monofilament, nonabsorbable, sterile, flexible thread prepared from ePTFE and is intended for use in soft tissue approximation and ligation, including cardiovascular surgery. It may be undyed or dyed with an approved color additive and may be provided with or without an attached needle(s).
MATERIAL, POLYTETRAFLUOROETHYLENE VITREOUS CARBON, FOR MAXILLOFACIAL RECONSTRUCTION definition: A polytetrafluoroethylene with carbon fibers composite implant material is a porous device material intended to be implanted during surgery of the chin, jaw, nose, or bones or tissue near the eye or ear. The device material serves as a space-occupying substance and is shaped and formed by the surgeon to conform to the patient's need.
MATERIALS, POLYTETRAFLUOROETHYLENE VITREOUS CARBON, FOR MAXILLOFACIAL ALVEOLAR RIDGE AUGMENTATION definition: Polytetrafluoroethylene (PTFE) vitreous carbon material is a device composed of polytetrafluoroethylene (PTFE) vitreous carbon intended for use in maxillofacial alveolar ridge augmentation (building up the upper or lower jaw area that contains the sockets in which teeth are rooted) or intended to coat metal surgical implants to be placed in the alveoli (sockets in which the teeth are rooted) or the temporomandibular joints (the joint between the upper and lower jaws).
 
Examples
 

This paper discusses various areas to be investigated and principles for deciding on test materials, tests, and test conditions, polytetrafluoroethylene (PTFE) and fluorinated polyethylene-propylene (PFEP) pyrolysis studies being used as an illustrative case history.

R S Waritz

Environmental Health Perspectives 11 (7), 01 Jun 1975

Polysterene grafted on the surface of polytetrafluoroethylene has been found to be an adequate support.

V K Potapov et al.

Nucleic Acids Research 6 (6), 1979

Both aneurysms were resected and a polytetrafluoroethylene (PTFE) femoropopliteal interposition graft was placed successfully.

Theodossios P Perdikides et al.

Journal of Medical Case Reports 2 (7), 20 Apr 2008

We hypothesized that adventitial transplantation of blood outgrowth endothelial cells (BOEC) to the vein-to-graft anastomosis of polytetrafluoroethylene grafts will reduce neointimal hyperplasia by reducing hypoxia inducible factor-1α (HIF-1α), by increasing angiogenesis in a porcine model of chronic renal insufficiency with haemodialysis polytetrafluoroethylene grafts.

Deborah Hughes et al.

Nephrology Dialysis Transplantation 24 (1), 01 Jan 2009

Keywords blood outgrowth endothelial cells haemodialysis graft failure hypoxia restenosis vascular biology Introduction In the United States, over half of the patients undergoing chronic haemodialysis require polytetrafluoroethylene (PTFE) grafts for vascular access [ 1 ].

Deborah Hughes et al.

Nephrology Dialysis Transplantation 24 (1), 01 Jan 2009

4 further examples >>
Publications
 

An industrial approach to evaluation of pyrolysis and combustion hazards.: ... and test conditions, polytetrafluoroethylene (PTFE) and fluorinated ...

R S Waritz

Environmental Health Perspectives , 01 Jun 1975

Rapid synthesis of oligodeoxyribonucleotides on a grafted polymer support.: ... on the surface of polytetrafluoroethylene has been found to be an ...

V K Potapov et al.

Nucleic Acids Research , 1979

Bilateral giant femoropopliteal artery aneurysms: a case report: ... were resected and a polytetrafluoroethylene (PTFE) femoropopliteal ...

Theodossios P Perdikides et al.

Journal of Medical Case Reports , 20 Apr 2008

Adventitial transplantation of blood outgrowth endothelial cells in porcine haemodialysis grafts alleviates hypoxia and decreases neointimal proliferation through a matrix metalloproteinase-9-mediated pathway—a pilot study: ... anastomosis of polytetrafluoroethylene grafts will reduce ...

Deborah Hughes et al.

Nephrology Dialysis Transplantation , 01 Jan 2009

Small-Diameter PTFE Portosystemic Shunts: Portocaval vs Mesocaval: ... supported, ringed polytetrafluoroethylene prosthesis of either 10 ...

Robert Shields

HPB Surgery , 1998

Pancreatic and multiorgan resection with inferior vena cava reconstruction for retroperitoneal leiomyosarcoma: ... of the IVC with a polytetrafluoroethylene graft. The patient ...

John A Stauffer et al.

World Journal of Surgical Oncology , 06 Jan 2009

Dacron ® vs. PTFE as bypass materials in peripheral vascular surgery – systematic review and meta-analysis: ... used materials, polytetrafluoroethylene (PTFE) or polyester ...

Stephanie Roll et al.

BMC Surgery , 19 Dec 2008

In vitro evaluation of various bioabsorbable and nonresorbable barrier membranes for guided tissue regeneration: ... as three nonresorbable polytetrafluoroethylene (PTFE) membranes [ACE ...

Adrian Kasaj et al.

Head & Face Medicine , 14 Oct 2008

Surgical strategy to prevent cardiac injury during reoperation in infants: ... and a 3.5 mm expanded polytetrafluoroethylene (ePTFE) graft was ...

Christopher J Knott-Craig et al.

Journal of Cardiothoracic Surgery , 28 Feb 2008