Mammary prosthesis

• US 5,171,269 A
• Filed: 08/29/1991
• Issued: 12/15/1992
• Est. Priority Date: 08/29/1991
• Status: Expired due to Fees

• Current Assignee: Medical Engineering Corporation
• Original Assignee: Medical Engineering Corporation
• Inventors: Bark, Jeffrey E.
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): Gualtieri, Gina
• Application Number:
  US07/752,288
• Time in Patent Office: 474 Days
• Field of Search: 623/7, 623/8, 623/11
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants

Abstract

A mammary prosthesis for augmentation mammoplasty is comprised of a shell containing an insoluble, fibrous material which when the shell is inflated with inflating fluid adjusts the feel and appearance of the inflated shell to approximate natural mammary tissue. The shell is sealed except for a valve which can be used to inflate the shell.

Claims

1. A mammary prosthesis comprising:

(a) a hollow shell of physiologically inert material having a relatively flat base and a collapsible domed top;

(b) an insoluble, fibrous material partially filling said shell and preventing the collapsible top and bottom from touching when the shell is uninflated, said fibrous material being present in an amount and having a density which when the shell is filled with an inflating liquid results in the inflated prosthesis having fluid hydraulic properties approximating natural mammary tissue;

(c) an inflating liquid filling the remainder of and inflating said shell; and

(d) valve means sealing said hollow shell and providing means by which inflating liquid can be introduced into or removed from said shell.

2. A prosthesis of claim 1 in which the fibrous material comprises coiled solid plastic strands.

3. A prosthesis of claim 1 in which the fibrous material comprises coiled hollow plastic strands.

4. A prosthesis of claim 1 in which an outer surface of the shell is textured.

5. An implantable mammary prosthesis comprising:

(a) A hollow inflatable shell of physiologically inert material having a relatively flat base and a collapsible domed top;

(b) an insoluble, fibrous polyester material partially filling said shell and preventing the top and bottom from touching when the shell is uninflated, said fibrous material having a density of about 0.01 mg/cc and being present in an amount which when the shell is filled with saline solution results in the inflated prosthesis having the feel and appearance of natural mammary tissue; and

(c) saline solution filling the remainder of and inflating said shell; and

(d) valve means sealing said hollow shell and providing means by which saline solution can be introduced into or removed from said shell.