Textured surface prosthetic device

• US 5,344,388 A
• Filed: 11/05/1993
• Issued: 09/06/1994
• Est. Priority Date: 05/01/1991
• Status: Expired due to Fees

• Current Assignee: Jack Fisher, Larry Perry, Maxwell G. Patrick
• Original Assignee: Jack Fisher, Larry Perry, Maxwell G. Patrick
• Inventors: Fisher, Jack, Perry, Larry, Maxwell, G. Patrick
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): JONES, MARYBETH O
• Application Number:
  US08/147,453
• Time in Patent Office: 305 Days
• Field of Search: 623/1, 623/8, 600/38-41
• US Class Current: 600/40
• CPC Class Codes: A61F 2/26 Penis implants

Abstract

A penile prosthesis device includes at least one elongate member for implantation into the corpus cavernosum of the penis, the elongate member having an outer surface morphology facilitating tissue adherence to the implanted elongate member and tissue ingrowth.

Claims

1. A penile prosthesis device capable of repeated circumferential expansion and contraction in use for the correction of erectile impotence, comprising at least one flexible elongate member for implantation into a corpus cavernosum of a penis, said elongate member being constructed substantially of silicone rubber and having a fluid impervious inner surface defining an interior chamber and an outer surface, said outer surface having texturing means formed directly in said outer surface which is left exposed to body tissue to facilitate tissue adherence and tissue ingrowth over substantially the entire implanted elongate member to thereby assure repeated circumferential expansion and contraction by a more expandable, compliant and malleable encapsulation of scar tissue with minimal contracture and to thereby prevent at the same time the formation of periprosthetic dead space about the elongate member so as to significantly reduce infection due to cellular trauma and erosion, perforation and uncontrolled movement of the device wherein said texturing in said outer surface has a pore size distribution ranging from approximately 60 microns to approximately 567 microns.

2. The device of claim 1 wherein said outer surface completely encloses said elongate member.

3. The device of claim 1 wherein there are no openings extending through said outer surface of said elongate member.

4. The device of claim 1 further comprising a fluid reservoir and a fluid pump, said reservoir being in fluid communication with said pump and said pump being in fluid communication with said inflatable elongate member.

5. The device of claim 4 wherein said outer surface has a textured surface morphology for facilitating tissue adherence and tissue ingrowth.

6. The device of claim 1 wherein said texturing in said outer surface has a pore density of approximately 2.4 pores per square millimeter of surface area.

7. The device of claim 1 wherein said texturing in said outer surface has a mean pore size of approximately 263 microns.

8. A penile prosthesis device for the correction of erectile impotence which is capable of repeated circumferential expansion and contraction in use by transfer of fluid from and back to a reservoir means for the storage of the fluid when not in use, comprising at least one repeatedly circumferentially expandable and contractable elongate member constructed substantially of silicone rubber for implantation into a corpus cavernosum of a penis, said elongate member including a fluid impervious inner surface defining an interior chamber for containment of a fluid and an outer surface, reservoir means for the storage of said fluid when such fluid is not in said chamber, and means for controllably expanding and contracting said elongate member including pump means for pumping said fluid from said reservoir means into said chamber to circumferentially expand said elongate member, and said elongate member having an outer surface with texturing means over substantially its entire surface, said texturing means being formed directly in said outer surface which is left exposed to body tissue to facilitate formation of an expandable capsule of tissue around said elongate member to thereby assure a more expandable compliant and malleable encapsulation with minimal contracture and to thereby prevent at the same time the formation of periprosthetic dead space about said elongate member so as to significantly reduce infection due to cellular trauma and erosion, perforation and uncontrolled movement of the device wherein said texturing in said outer surface has a pore size distribution ranging from approximately 60 microns to approximately 567 microns.

9. A penile prosthesis device for the correction of erectile impotence which is capable of repeated circumferential expansion and contraction, comprising at least one elongate member for implantation into a corpus cavernosum of a penis, said elongate member being constructed substantially of silicone rubber and having an outer surface with texturing means over substantially its entire surface area, said texturing means being formed directly in said outer surface which is left exposed to body tissue to facilitate tissue adherence and tissue ingrowth over substantially the entire implanted elongate member to thereby assure repeated circumferential expansion and contraction by a more expandable compliant and malleable encapsulation with minimal contraction and to thereby prevent at the same time the formation of periprosthetic dead space about the elongate member so as to significantly reduce infection due to cellular trauma and erosion, perforation and uncontrolled movement of the device wherein said texturing in said outer surface has a pore size distribution ranging from approximately 60 microns to approximately 567 microns.

10. The device of claim 9 wherein said outer surface completely encloses said elongate member.

11. The device of claim 9 wherein there are no openings extending through said outer surface of said elongate member.