Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-02-28
1995-12-26
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
264520, 264521, 264573, A61M 2900
Patent
active
054783194
ABSTRACT:
An inflatable medical balloon (40) at its distal end for introduction into a body part especially through an endoscope (46) and method of making the balloon. When fully inflated, the balloon (40) is a continuous body of balloon material (which may be formed of one or more polymeric layers) with a generally cylindrical shape and four ribs (44) formed in the body. The ribs (44) are longitudinally and equidistantly arranged around an axis (A) which extends from the proximal end to the distal end of the balloon (40). The ribs (44) are formed of stressed balloon material. Webs (45) of less stressed balloon material are disposed between the ribs (44), the ribs and the webs forming the balloon (40) and being expandable from a folded condition for insertion into the body part to an expanded condition with a generally cylindrical shape and a diameter substantially greater than the folded condition whereby to provide medical treatment and, after treatment, being revertible into a folded condition of predetermined configuration with the webs (45) between the ribs (44) collapsing inwardly towards the axis (A). The balloon with its ribs is made by placing an untensioned balloon in a mold (15) having a square cross section with pyramidal end members (3). The mold is heated and balloon is inflated to form ribs (44) of stressed balloon material with webs (45) of less stressed material between them.
REFERENCES:
patent: 4935190 (1990-06-01), Tennerstedt
patent: 5209799 (1993-05-01), Vigil
patent: 5350361 (1994-09-01), Tsukashima et al.
patent: 5370614 (1994-12-01), Amundson et al.
patent: 5411477 (1995-05-01), Saab
Barry, Jr. Ralph J.
Campbell Andrew J.
Boston Scientific Corp.
Yasko John D.
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