PT88710A - Low temp. forming of polymer article pref. vascular prosthesis - by coagulation from organic solv - Google Patents

Low temp. forming of polymer article pref. vascular prosthesis - by coagulation from organic solv

Info

Publication number
PT88710A
PT88710A PT88710A PT8871088A PT88710A PT 88710 A PT88710 A PT 88710A PT 88710 A PT88710 A PT 88710A PT 8871088 A PT8871088 A PT 8871088A PT 88710 A PT88710 A PT 88710A
Authority
PT
Portugal
Prior art keywords
coagulation
pref
forming
polymer
vascular prosthesis
Prior art date
Application number
PT88710A
Other languages
Portuguese (pt)
Other versions
PT88710B (en
Inventor
David Charlesworth
Christopher John Underwood
Kerm Sin Chian
Original Assignee
Newtec V P Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Newtec V P Ltd filed Critical Newtec V P Ltd
Priority to PT88710A priority Critical patent/PT88710B/en
Publication of PT88710A publication Critical patent/PT88710A/en
Publication of PT88710B publication Critical patent/PT88710B/en

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  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A polymer material dissolved in an organic solvent is shaped by coagulation in a coagulant at a temp. below that which will degrade the polymer. The viscosity of the polymer soln. is controlled by controlling the shear forces thereon, e.g. by using as injection means a piston and cylinder arrangement in which the piston (19) and cylinder are relatively rotatable. An apparatus for making a polymer tube by coagulation comprises a rotatable mandrel (39) arranged horizontally in a coagulating bath. The mandrel (39) extends through an extrusion head which is arranged to rotate with the mandrel.
PT88710A 1988-10-07 1988-10-07 PROCESS AND APPARATUS FOR THE MANUFACTURE OF A POLYMERIC MATERIAL PT88710B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT88710A PT88710B (en) 1988-10-07 1988-10-07 PROCESS AND APPARATUS FOR THE MANUFACTURE OF A POLYMERIC MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT88710A PT88710B (en) 1988-10-07 1988-10-07 PROCESS AND APPARATUS FOR THE MANUFACTURE OF A POLYMERIC MATERIAL

Publications (2)

Publication Number Publication Date
PT88710A true PT88710A (en) 1990-11-20
PT88710B PT88710B (en) 1995-05-04

Family

ID=20084327

Family Applications (1)

Application Number Title Priority Date Filing Date
PT88710A PT88710B (en) 1988-10-07 1988-10-07 PROCESS AND APPARATUS FOR THE MANUFACTURE OF A POLYMERIC MATERIAL

Country Status (1)

Country Link
PT (1) PT88710B (en)

Also Published As

Publication number Publication date
PT88710B (en) 1995-05-04

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