IP Library › Granted Patent US 8,337,551
Granted Patent B2
US 8,337,551 · App. 13/226,691 · Granted Dec 25, 2012

Biomedical devices

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Quick Facts
Patent No.
US 8,337,551
App. No.
13/226,691
Granted
Dec 25, 2012
Kind
B2
Abstract

Biomedical devices such as silicone hydrogels formed from a polymerization product of a mixture comprising (a) a siloxane-containing homopolymer which has only one thio carbonyl thio fragment of a reversible addition fragmentation chain transfer (RAFT) agent; and (b) one or more biomedical device-forming comonomers are disclosed.

Claims (17)

1. A biomedical device comprising a polymerization product of a mixture comprising (a) a siloxane-containing homopolymer which has only one thio carbonyl thio fragment of a reversible addition fragmentation chain transfer (RAFT) agent; and (b) one or more biomedical device-forming comonomers.

2. The biomedical device of claim 1 , wherein the thio carbonyl thio fragment is selected from the group consisting of dithioester fragment, xanthate fragment, dithiocarbamate fragment and trithiocarbonate fragment.

3. The biomedical device of claim 1 , wherein the siloxane-containing homopolymer is endcapped with the thio carbonyl fragment of the RAFT agent.

4. The biomedical device of claim 1 , wherein the biomedical device-forming comonomer is a siloxane-containing monomer.

5. The biomedical device of claim 4 , wherein the mixture further comprises a hydrophilic monomer, hydrophobic monomer or both.

6. The biomedical device of claim 1 , wherein the biomedical device-forming comonomer is a hydrophilic monomer or hydrophobic monomer.

7. The biomedical device of claim 1 , wherein the biomedical device-forming comonomer is a hydrophilic monomer selected from the group consisting of an unsaturated carboxylic acid, acrylamide, vinyl lactam, poly(alkyleneoxy)(meth)acrylate, (meth)acrylic acid, hydroxyl-containing-(meth)acrylate, hydrophilic vinyl carbonate, hydrophilic vinyl carbamate monomer, hydrophilic oxazolone monomer, and mixtures thereof.

8. The biomedical device of claim 1 , wherein the biomedical device-forming comonomer is a hydrophilic monomer selected from the group consisting of methacrylic acid, acrylic acid, 2-hydroxyethylmethacrylate, 2-hydroxyethylacrylate, N-vinyl pyrrolidone, N-vinyl caprolactone, methacrylamide, N,N-dimethylacrylamide, ethylene glycol dimethacrylate and mixtures thereof.

9. The biomedical device of claim 1 , wherein the siloxane-containing homopolymer comprises about 0.1 to about 40 weight percent of the mixture and the biomedical device-forming comonomer comprises about 0.1 to about 90 weight percent of the mixture.

10. The biomedical device of claim 1 , wherein the mixture further comprises (c) a crosslinking agent.

11. The biomedical device of claim 1 , wherein the device is a contact lens.

12. The biomedical device of claim 11 , wherein the contact lens is a rigid gas permeable contact lens.

13. The biomedical device of claim 11 , wherein the contact lens is a soft contact lens.

14. The biomedical device of claim 11 , wherein the contact lens is a hydrogel contact lens.

15. The biomedical device of claim 1 , wherein the device is an intraocular lens.

16. The biomedical device of claim 1 , wherein the device is a corneal implant.

17. A silicone hydrogel which is a hydrated polymerization product of a mixture comprising (a) a siloxane-containing homopolymer which has only one thio carbonyl thio fragment of a reversible addition fragmentation chain transfer (RAFT) agent; and (b) a hydrophilic comonomer.

Assignments (26)
RELEASE OF SECURITY INTEREST Recorded Nov 20, 2025
From: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
To: BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH US, LLC; SOLTA MEDICAL, INC.; MEDICIS PHARMACEUTICAL CORPORATION; SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD.; SANTARUS, INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; BAUSCH HEALTH AMERICAS, INC.
Reel/Frame 073654/0242 →
RELEASE OF SECURITY INTEREST Recorded Nov 20, 2025
From: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
To: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
Reel/Frame 073637/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 20, 2025
From: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
To: BAUSCH HEALTH AMERICAS, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH US, LLC; SOLTA MEDICAL, INC.; MEDICIS PHARMACEUTICAL CORPORATION; SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD.; SANTARUS, INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.
Reel/Frame 073637/0126 →
ASSIGNMENT OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (059913/0548) Recorded Aug 14, 2025
From: CITIBANK, N.A., AS RESIGNING AGENT
To: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR AGENT
Reel/Frame 072469/0091 →
PATENT SECURITY AGREEMENT Recorded Jul 1, 2025
From: BAUSCH & LOMB INCORPORATED; ALDEN OPTICAL LABORATORIES, INC.; BAUSCH + LOMB IRELAND LIMITED
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 071773/0871 →
RELEASE OF SECURITY INTEREST Recorded Apr 8, 2025
From: BARCLAYS BANK PLC, AS COLLATERAL AGENT
To: SOLTA MEDICAL, INC.; PRECISION DERMATOLOGY, INC.; BAUSCH HEALTH IRELAND LIMITED (F/K/A/ VALEANT PHARMACEUTICALS IRELAND LIMITED); SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD; SANTARUS, INC.; MEDICIS PHARMACEUTICAL CORPORATION; HUMAX PHARMACEUTICAL S.A.; SOLTA MEDICAL IRELAND LIMITED; BAUSCH & LOMB MEXICO, S.A. DE C.V.; BAUSCH+LOMB OPS B.V.; BAUSCH HEALTH AMERICAS, INC.; BAUSCH HEALTH COMPANIES INC.; BAUSCH HEALTH HOLDCO LIMITED; BAUSCH HEALTH MAGYARORSZAG KFT (A/K/A BAUSCH HEALTH HUNGARY LLC); BAUSCH HEALTH POLAND SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA (F/K/A VALEANT PHARMA POLAND SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA); BAUSCH HEALTH US, LLC; BAUSCH HEALTH, CANADA INC. / SANTE BAUSCH, CANADA INC.; ICN POLFA RZESZOW SPOLKA AKCYJNA (A/K/A ICN POLFA RZESZOW S.A.); ORAPHARMA, INC.; PRZEDSIEBIORSTWO FARMACEUTYCZNE JELFA SPOLKA AKCYJNA (A/K/A PRZEDSIEBIORSTWO FARMACEUTYCZNE JELFA S.A.); SOLTA MEDICAL DUTCH HOLDINGS B.V.; V-BAC HOLDING CORP.; VRX HOLDCO LLC; 1261229 B.C. LTD.; 1530065 B.C. LTD.
Reel/Frame 070778/0199 →
PATENT SECURITY AGREEMENT Recorded Oct 4, 2023
From: BAUSCH & LOMB INCORPORATED
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 065120/0086 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 059121/0001) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED
Reel/Frame 061873/0001 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 043251/0932) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED; TECHNOLAS PERFECT VISION GMBH
Reel/Frame 061872/0099 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 045444/0634) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED; LABORATOIRE CHAUVIN S.A.S.; TECHNOLAS PERFECT VISION GMBH; THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES
Reel/Frame 061872/0295 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 048556/0758) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH COMPANIES INC.; TECHNOLAS PERFECT VISION GMBH; THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES
Reel/Frame 061872/0484 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 056811/0814) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED
Reel/Frame 061872/0669 →
RELEASE OF SECURITY INTEREST IN SPECIFIED PATENTS (REEL/FRAME 045444/0299) Recorded Oct 26, 2022
From: BARCLAYS BANK PLC
To: BAUSCH & LOMB INCORPORATED; TECHNOLAS PERFECT VISION GMBH; THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES; PF CONSUMER HEALTHCARE 1 LLC; LABORATOIRE CHAUVIN S.A.S.
Reel/Frame 061779/0001 →
RELEASE OF SECURITY INTEREST IN SPECIFIED PATENTS (REEL/FRAME 031156/0508) Recorded Oct 26, 2022
From: BARCLAYS BANK PLC
To: BAUSCH & LOMB INCORPORATED
Reel/Frame 061778/0446 →
RELEASE OF SECURITY INTEREST IN SPECIFIED PATENTS (REEL/FRAME 034749/0689) Recorded Oct 26, 2022
From: BARCLAYS BANK PLC
To: BAUSCH & LOMB INCORPORATED; UNIVERSITY OF ROCHESTER
Reel/Frame 061778/0146 →
PATENT SECURITY AGREEMENT Recorded May 10, 2022
From: BAUSCH & LOMB INCORPORATED
To: CITIBANK, N.A. AS COLLATERAL AGENT
Reel/Frame 059913/0548 →
SECURITY AGREEMENT Recorded Feb 10, 2022
From: BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH US, LLC; SOLTA MEDICAL, INC.; MEDICIS PHARMACEUTICAL CORPORATION; SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD.; SANTARUS, INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; BAUSCH HEALTH AMERICAS, INC.
To: THE BANK OF NEW YORK MELLON
Reel/Frame 059121/0001 →
SECURITY INTEREST Recorded Jun 8, 2021
From: BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH US, LLC; SOLTA MEDICAL, INC.; MEDICIS PHARMACEUTICAL CORPORATION; SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD.; SANTARUS, INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; BAUSCH HEALTH AMERICAS, INC.
To: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
Reel/Frame 056811/0814 →
SECURITY INTEREST Recorded Mar 11, 2019
From: BAUSCH HEALTH AMERICAS, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH HEALTH US, LLC; SOLTA MEDICAL, INC.; MEDICIS PHARMACEUTICAL CORPORATION; SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD.; SANTARUS, INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.
To: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
Reel/Frame 048556/0758 →
SECURITY INTEREST Recorded Feb 26, 2018
From: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 045444/0299 →
SECURITY INTEREST Recorded Feb 26, 2018
From: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
To: THE BANK OF NEW YORK MELLON, AS COLLATERAL AGENT
Reel/Frame 045444/0634 →
SECURITY INTEREST Recorded Jul 19, 2017
From: BAUSCH & LOMB INCORPORATED
To: THE BANK OF NEW YORK MELLON
Reel/Frame 043251/0932 →
NOTICE OF SUCCESSION OF AGENCY Recorded Jan 9, 2015
From: GOLDMAN SACHS LENDING PARTNERS, LLC
To: BARCLAYS BANK PLC, AS SUCCESSOR AGENT
Reel/Frame 034749/0689 →
SECURITY AGREEMENT Recorded Sep 4, 2013
From: BAUSCH & LOMB INCORPORATED
To: GOLDMAN SACHS LENDING PARTNERS LLC, AS COLLATERAL AGENT
Reel/Frame 031156/0508 →
RELEASE OF SECURITY INTEREST Recorded Aug 13, 2013
From: CITIBANK N.A., AS ADMINISTRATIVE AGENT
To: WP PRISM INC. (N/K/A BAUSCH & LOMB HOLDINGS INC.); BAUSCH & LOMB INCORPORATED; ISTA PHARMACEUTICALS
Reel/Frame 030995/0444 →
SECURITY AGREEMENT Recorded Aug 6, 2012
From: BAUSCH & LOMB INCORPORATED; EYEONICS, INC.
To: CITIBANK N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 028728/0645 →