US 12,303,379 B2Granted

Implant with elastomeric membrane and methods of fabrication thereof

AssigneeMentor Worldwide LLC

InventorPeter Renke

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Abstract

A method of forming an implant includes providing a preformed shell formed from at least one cured elastomeric layer. The shell includes an outer surface, an inner surface, and an opening for accessing an interior volume of the shell. The method further includes expanding the shell to an expanded state, in which the interior volume is greater than the interior volume of the shell at a time of forming the shell and forming an inner zone having at least one inner elastomeric layer on at least a portion of the inner surface of the shell, while the shell is in the expanded state, thereby forming a multi-zone shell. The method further includes reducing the interior volume of the multi-zone shell, thereby contracting the at least one inner elastomeric layer of the inner zone and causing texturing of the at least one inner elastomeric layer.

Claims20

Dependent claims

A method of forming a shell for an implant comprising an elastomeric membrane, the implant being configured to volumetrically alter, replace, expand, or augment body tissues, the method comprising:

forming an outer zone of the elastomeric membrane by casting in a casting mold enclosing a first volume, the outer zone comprising at least one outer elastomeric layer and an opening;
positioning the formed outer zone in a vacuum chamber mold enclosing a second volume that is greater than the first volume and pressurizing an interior cavity defined by the outer zone through the opening to inflate the outer zone to an expanded state in which an exterior surface of the outer zone contacts an inner surface of the vacuum chamber mold;
and
with the outer zone in the expanded state, forming an inner zone of the elastomeric membrane comprising at least one inner elastomeric layer on an inner surface of the outer zone.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/274,615Filed 9 Sep 2019 · continuation
Priority: 10 Sep 2018
Published: US 2022/0047380 A117 Feb 2022
Granted: 20 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification47 codes

A61F 2/12
Prostheses implantable into the body: mammary prostheses
A61B 90/02
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
B29C 35/0266
Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould: local curing
B29C 39/10
For making articles of definite length, i.e. discrete articles: incorporating preformed parts or layers, e.g. casting around inserts or for…

Family

Application16/126,232Parent of this continuation · filed 10 Sep 2018
US 2022/0047380 A1Pre-grant publication · published 17 Feb 2022
US 10,820,984 B2Parent of this continuation
US 2019/0000608 A1Published application
US 12,303,379 B2This patent

From the US filing history. Foreign family members aren’t listed.