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EP0784987A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of making in situ filler material for mammary, penile and testicular prosthesis and tissue expanders

Assignee: Mentor Worldwide LLC
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Filing: 1997-01-08
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Granted: —
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Expires: 2017-01-08
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Abstract

Abstract An inflatable prosthesis which contains a dehydrated substance that forms a gel when mixed with an aqueous solution. The dehydrated substance is a biocompatible material such as an hydrophilic polymer which includes but is not limited to polyacrylamide, polyvinylprolidone, hydroxypropyl methylcellulose, polyvinyl alcohol, polyethylene oxides, polypropylene oxides, polyethylene glycol, polylactic, polyglycoloic acids, hydrogel polyurethane, chrondotoin sulfate, hyaluronic acid and alginate. The prosthesis includes a flexible inflatable outer shell that has an inner cavity. The inner cavity may contain the sterile dehydrated substance. The prosthesis is provided to the surgical site while the substance is in the dehydrated state. An initial volume of aqueous solution can be added to the inner cavity of the outer shell. The dehydrated substance combines with the aqueous solution to form a gel within the implant. The semi-inflated prosthesis can be implanted into a breast and inflated to a desired size with an additional volume of aqueous solution. The dehydrated substance may be coated along the inner surface of the prosthesis to form a lubricant which reduces crease-fold rupture. As an alternate embodiment, the dehydrated substance may be supplied in a package separate from the outer shell. An aqueous solution can be added to the package in situ to form a gel which can be subsequently added to the inner cavity of the outer shell.

Inventors

  • 👤 Bobby Purkait

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 09:11
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/18; A61F; A61F2/00; A61F2/0059; A61F2/02; A61F2/12; A61L27/16; A61L27/20; A61L27/50; A61L27/52

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 38 words
A prosthesis that can be filled with a fluid, comprising: an outer shell that has an inner cavity; and, an essentially dehydrated substance within said inner cavity, said dehydrated substance forms a gel when combined with the fluid.
Claim 2
Dependent Claim 13 words
The prosthesis as recited in claim 1, wherein said dehydrated substance is biocompatible.
Claim 3
Dependent Claim 15 words
The prosthesis as recited in claim 2, wherein said dehydrated substance is an hydrophilic polymer.
Claim 4
Dependent Claim 21 words
The prosthesis as recited in claim 1, wherein said dehydrated substance is coated along an inner surface of said outer shell.
Claim 5
Dependent Claim 54 words
A prosthetic assembly that can be filled with a fluid, comprising: an outer shell that has an inner cavity; a secondary package that contains an essentially dehydrated substance that forms a gel when combined with the fluid and, an outer package that encloses said outer shell and said secondary package in a sterile condition.
Claim 6
Dependent Claim 13 words
The assembly as recited in claim 5, wherein said dehydrated substance is biocompatible.
Claim 7
Dependent Claim 15 words
The assembly as recited in claim 6, wherein said dehydrated substance is an hydrophilic polymer.
Claim 8
Dependent Claim 20 words
The assembly as recited in claim 5, wherein said outer shell, said secondary package and said outer package are sterilized.
Claim 9
Independent Claim 59 words
A method for implanting a prosthesis within a body member, comprising the steps of: a) placing an outer shell into the body member, said outer shell having an inner cavity that contains an essentially dehydrated substance; and, b) introducing a fluid into said inner cavity, wherein said fluid and said dehydrated substance form a gel within said outer shell.
Claim 10
Dependent Claim 24 words
The method as recited in claim 9, further comprising a step of introducing additional fluid to said inner cavity to expand said outer shell.
Claim 11
Dependent Claim 26 words
The method as recited in claim 9, wherein the fluid is introduced to said outer shell before said outer shell is placed within the body member.
Claim 12
Independent Claim 72 words
A method for implanting a prosthesis within a body member, comprising the steps of: a) placing an outer shell into the body member, said outer shell having an inner cavity that contains an essentially dehydrated substance coated along an inner surface of said outer shell; and, b) introducing a fluid into said inner cavity, wherein said fluid and said dehydrated substance form a gel within said inner cavity of said outer shell.
Claim 13
Dependent Claim 24 words
The method as recited in claim 12, further comprising a step of introducing additional fluid to said inner cavity to expand said outer shell.
Claim 14
Dependent Claim 26 words
The method as recited in claim 12, wherein the fluid is introduced to said outer shell before said outer shell is placed within the body member.
Claim 15
Independent Claim 97 words
A method for implanting a prosthesis within a body member, comprising the steps of: a) providing a sterile package which contains an outer shell and a secondary package, wherein said secondary package contains a dehydrated substance and said outer shell has an inner cavity; b) removing said outer shell from said sterile package; c) introducing a fluid into said secondary package, wherein the fluid and said dehydrated substance form a gel; d) placing said outer shell into the body member; and, e) transferring said gel from said secondary package to said inner cavity of said outer shell.
Claim 16
Dependent Claim 24 words
The method as recited in claim 15, further comprising a step of introducing additional gel to said inner cavity to expand said outer shell.
Claim 17
Dependent Claim 25 words
The method as recited in claim 15, wherein gel is transferred to said outer shell before said outer shell is placed within the body member.
Claim 18
Independent Claim 39 words
A method of creating a prosthesis within a body member, comprising the step of: a) introducing a dehydrated substance into the body member, wherein said dehydrated substance combines with body fluid to form a gel within the body member.
Claim 19
Dependent Claim 17 words
The method as recited in claim 18, wherein said dehydrated substance is injected into the body member.

References Cited (Backward Citations)

US4643733A Cited
US4731081A Cited
US4772284A Cited
US4787905A Cited
US5219360A Cited

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