Cosmetic and reconstructive prostheses with a microencapsulated biologically compatible rupture indicator for sustained release and methods of detecting compromise of a prosthesis

• US 7,736,391 B2
• Filed: 03/17/2006
• Issued: 06/15/2010
• Est. Priority Date: 02/06/2003
• Status: Expired due to Fees

• Current Assignee: Tonaba Healthscience, LLC
• Original Assignee: Tonaba Healthscience II, LLC
• Inventors: Roballey, Thomas C., Feldman, Nathan, Schwibner, Barry H.
• Primary Examiner(s): SWEET, THOMAS
• Application Number:
  US11/378,983
• Publication Number:
  US 20060161266A1
• Time in Patent Office: 1,551 Days
• Field of Search: 623/7, 623/8
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants

Abstract

A prosthesis for implant in a human patient body has an external envelope, at least one implant filling material, and at least one biologically compatible rupture indicator encapsulated in a sustained release delivery vehicle and disposed in a carrier medium, the rupture indicator capable of leaking out of upon rupture of the external envelope and triggering a signal detectable by the patient as it is released from the delivery vehicle, allowing for detection of a rupture or impending rupture by the patient.

Claims

1. A prosthesis for implant in a human patient body, comprising:

an external envelope made of at least one layer of a first elastomer;

at least one indicator lumen enclosed by the external envelope;

a carrier medium disposed within the indicator lumen;

at least one biologically compatible microencapsulated rupture indicator contained in the carrier medium, the rupture indicator capable of leaking out of the indicator lumen upon rupture of the external envelope and triggering a signal detectable by the patient;

at least one implant lumen enclosed by at least one implant lumen envelope made of at least one layer of a second elastomer, the implant lumen disposed within the indicator lumen; and

an implant filling material contained within the implant lumen; and

wherein the signal is a distinct color in urine of the patient detectable by sight; and

wherein the microencapsulated rupture indicator is phenazopyridine.

2. The prosthesis of claim 1, wherein the implant filling material is selected from the group consisting of silicone gel and saline solution.

3. The prosthesis of claim 1, wherein the microencapsulated rupture indicator comprises a rupture indicator encapsulated in a sustained release delivery system prior to placement in the carrier medium, the sustained release delivery system selected from the group consisting of a microparticle, microsphere, nanoparticle, nanosphere, and combinations of these.

4. The prosthesis of claim 3, wherein selection of the particular sustained release delivery system controls the rate of sustained release of the rupture indicator triggering the signal to the patient.

5. The prosthesis containing a rupture indicator of claim 1, further comprising an external implant lumen which is enclosed by an external implant lumen envelope, and an internal implant lumen enclosed by an internal implant lumen envelope, the internal implant lumen disposed within the external implant lumen envelope.

6. The prosthesis of claim 5, wherein the external implant lumen is disposed internally within the indicator lumen such that the carrier medium surrounds the implant lumen and the implant filing material contained therein.

7. The prosthesis of claim 5, wherein the implant filling material contained in the internal implant lumen is a silicone gel.

8. The prosthesis of claim 5, wherein the implant filling material contained in the external implant lumen is a saline solution.

9. The prosthesis of claim 1, wherein the indicator lumen comprises a filling means for filling the microencapsulated rupture indicator and the carrier medium through the exterior envelope.

10. The prosthesis of claim 1, wherein the exterior envelopes comprise a first inner layer and a first outer layer, both made of the first is elastomer, and a first barrier layer between the first inner and the first outer layers.

11. The prosthesis of claim 1, wherein the indicator lumen envelope comprises a first inner layer and a first outer layer, both made of the first elastomer, and a first barrier layer between the first inner and first outer layers.

12. The prosthesis of claim 1, wherein the implant lumen envelope comprises a second inner layer and a second outer layer, both made of the second elastomer, and a second barrier layer between the second inner and second outer layers.

13. A prosthesis for implant in a human patient body, comprising:

an external envelope made of at least one layer of a first elastomer;

at least one implant filling material contained within the external envelope; and

at least one biologically compatible rupture indicator encapsulated in a sustained release delivery vehicle and disposed in a carrier medium for placement in the external envelope, the rupture indicator capable of leaking out of upon rupture of the external envelope and triggering a signal detectable by the patient as it is released from the delivery vehicle; and

wherein the microencapsulated rupture indicator is phenazopyridine.

14. The prosthesis of claim 13, wherein the sustained release delivery vehicle is selected from the group consisting of a microparticle, microsphere, nanoparticle, nanosphere, and combinations of these.

15. The prosthesis of claim 14, wherein selection of the particular sustained release delivery system controls the rate of sustained release of the rupture indicator triggering the signal to the patient.