IP Library › Granted Patent US 12,186,449
Granted Patent B2
US 12,186,449 · App. 18/379,190 · Granted Jan 7, 2025

Dermal fillers and applications thereof

Inventors: Oded Shoseyov (Shoham, IL); Nadav Orr (Mazkeret Batya, IL); Jasmine Seror Maknouz (Tel-Aviv, IL); Revital Zarka (Mazkeret Batya, IL)
Assignee: CollPlant Ltd.
A61L27/26A61K8/042A61K8/65A61K8/735A61L27/3687A61Q19/08C08L5/08C08L89/04C12N15/8257A61K2800/59A61K2800/81A61K2800/91A61L2400/06A61L2430/34
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Quick Facts
Patent No.
US 12,186,449
App. No.
18/379,190
Granted
Jan 7, 2025
Kind
B2
Abstract

The disclosure herein relates to photoinitiated dermal fillers, hyaluronic acid-rhCollagen double crosslinked dermal fillers and hyaluronic acid-rhCollagen semi interpenetrated network, each comprising plant-derived human collagen, as well as methods of using the same.

Claims (45)

1. A polymerizable solution comprising:

a cross-linkable, plant-derived recombinant type 1 human collagen (rhcollagen);

a hyaluronic acid (HA), a modified HA derivative, a poly(vinyl alcohol) (PVA), a modified PVA derivative, a polyethylene glycol (PEG), a modified PEG derivative, oxidized cellulose (OC), a modified OC derivate, polymethylmethacrylate (PMMA) microspheres, modified PMMA microsphere derivatives, tricalcium phosphate (TCP), a modified TCP derivative, calcium hydroxylapatite (CaHA), a modified CaHA derivative, carboxymethylcellulose, a modified carboxymethylcellulose derivative, crystalline nanocellulose (CNC), a modified CNC derivative, or a combination thereof; and

a photoinitiator.

2. The polymerizable solution of claim 1 , wherein the cross-linkable, plant-derived human collagen is methacrylated or thiolated plant-derived recombinant type 1 human collagen (rhcollagen).

3. The polymerizable solution of claim 1 , wherein the modified derivative of hyaluronic acid (HA), poly(vinyl alcohol) (PVA), polyethylene glycol (PEG), oxidized cellulose (OC), polymethylmethacrylate (PMMA) microspheres, tricalcium phosphate (TCP), calcium hydroxylapatite (CaHA), carboxymethylcellulose, or crystalline nanocellulose (CNC) comprises a methacrylated or thiolated derivative.

4. The polymerizable solution of claim 1 , wherein the hyaluronic acid (HA), poly(vinyl alcohol) (PVA), polyethylene glycol (PEG), oxidized cellulose (OC), polymethylmethacrylate (PMMA) microspheres, tricalcium phosphate (TCP), calcium hydroxylapatite (CaHA), carboxymethylcellulose, or crystalline nanocellulose (CNC) comprises a crosslinked hyaluronic acid (HA), crosslinked poly(vinyl alcohol) (PVA), crosslinked polyethylene glycol (PEG), crosslinked oxidized cellulose (OC), crosslinked polymethylmethacrylate (PMMA) microspheres, crosslinked tricalcium phosphate (TCP), crosslinked calcium hydroxylapatite (CaHA), crosslinked carboxymethylcellulose, or crosslinked crystalline nanocellulose (CNC).

5. The polymerizable solution of claim 1 , comprising:

methacrylated or thiolated plant-derived recombinant type 1 human collagen (rhcollagen); a crosslinked hyaluronic acid (HA), crosslinked poly(vinyl alcohol) (PVA), crosslinked polyethylene glycol (PEG), crosslinked oxidized cellulose (OC), crosslinked polymethylmethacrylate (PMMA) microspheres, crosslinked tricalcium phosphate (TCP), crosslinked calcium hydroxylapatite (CaHA), crosslinked carboxymethylcellulose, or crosslinked crystalline nanocellulose (CNC); and

said photoinitiator.

6. The polymerizable solution of claim 1 , comprising:

methacrylated plant-derived recombinant type 1 human collagen (rhcollagen);

a hyaluronic acid (HA), a crosslinked hyaluronic acid (HA), a methacrylated or thiolated hyaluronic acid (HA) or any combination of said hyaluronic acid (HA), said crosslinked hyaluronic acid (HA), and said methacrylated or thiolated hyaluronic acid (HA); and

a photoinitiator.

7. The polymerizable solution of claim 6 , wherein a ratio of said hyaluronic acid (HA), said crosslinked hyaluronic acid (HA), said methacrylated or thiolated hyaluronic acid (HA) or said combination thereof to said methacrylated plant-derived recombinant type 1 human collagen (rhcollagen) ranges from 6:1 to 1:6.

8. The polymerizable solution of claim 7 , wherein said ratio ranges from 4:1 to 1:4 or from 3:1 to 1:3, or from 3:1 to 2:1.

9. The polymerizable solution of claim 1 , wherein the cross-linkable, plant-derived recombinant type 1 human collagen and the photoinitiator are included together and independently from said hyaluronic acid (HA), said modified HA derivative, said poly(vinyl alcohol) (PVA), said modified PVA derivative, said polyethylene glycol (PEG), said modified PEG derivative, said oxidized cellulose (OC), said modified OC derivate, said polymethylmethacrylate (PMMA) microspheres, said modified PMMA microsphere derivatives, said tricalcium phosphate (TCP), said modified TCP derivative, said calcium hydroxylapatite (CaHA), said modified CaHA derivative, said carboxymethylcellulose, said modified carboxymethylcellulose derivative, said crystalline nanocellulose (CNC), said modified CNC derivative, or said combination thereof.

10. The polymerizable solution of claim 1 , wherein the cross-linkable, plant-derived recombinant type 1 human collagen, said hyaluronic acid (HA), said modified HA derivative, said poly(vinyl alcohol) (PVA), said modified PVA derivative, said polyethylene glycol (PEG), said modified PEG derivative, said oxidized cellulose (OC), said modified OC derivate, said polymethylmethacrylate (PMMA) microspheres, said modified PMMA microsphere derivatives, said tricalcium phosphate (TCP), said modified TCP derivative thereof, said calcium hydroxylapatite (CaHA), said modified CaHA derivative, said carboxymethylcellulose, said modified carboxymethylcellulose derivative, said crystalline nanocellulose (CNC), said modified CNC derivative, or said combination thereof, and said photoinitiator are included together.

11. The polymerizable solution of claim 1 , further comprising a non-modified plant-derived recombinant type 1 human collagen.

12. The polymerizable solution of claim 1 , wherein a concentration of said cross-linkable, plant-derived recombinant type 1 human collagen ranges from 1 to 12 mg/ml.

13. The polymerizable solution of claim 1 , being an injectable solution at the temperature of use, and/or having a texture and viscosity which permits flow through a suitable delivery device.

14. The polymerizable solution of claim 1 , being a photocurable solution.

15. The polymerizable solution of claim 1 , wherein the photoinitiator induces polymerization of the polymerizable solution in response to visible light having a wavelength of 390-800 nm.

16. The polymerizable solution of claim 1 , being a dermal filler.

17. The polymerizable solution of claim 1 , being capable of augmenting a tissue in a subject.

18. The polymerizable solution of claim 17 , wherein said tissue is skin tissue.

19. The polymerizable solution of claim 1 , being capable of filling a tissue space under an epidermis.

20. A double crosslinked dermal filler comprising:

(a) a plant-derived recombinant human type 1 collagen; and

(b) a crosslinked hyaluronic acid;

wherein the plant-derived human collagen is crosslinked to the crosslinked hyaluronic acid.

21. The double crosslinked dermal filler of claim 20 , further comprising a non-crosslinked hyaluronic acid.

22. The double crosslinked dermal filler of claim 20 , wherein the crosslinker linking the crosslinked hyaluronic acid differs from the crosslinker linking the plant-derived recombinant human type 1 collagen with the crosslinked hyaluronic acid.

23. The double crosslinked dermal filler of claim 20 , wherein a ratio of said crosslinked hyaluronic acid to said plant-derived recombinant human type-1 collagen ranges from 6:1 to 1:6.

24. The double crosslinked dermal filler of claim 20 , wherein a concentration of said crosslinked hyaluronic acid ranges from 5 to 50 mg/ml.

25. The double crosslinked dermal filler of claim 23 , wherein a concentration of said crosslinked hyaluronic acid ranges from 5 to 50 mg/ml.

26. The double crosslinked dermal filler of claim 20 , wherein the crosslinker crosslinking said hyaluronic acid and the crosslinker crosslinking said plant-derived recombinant human type 1 collagen are each independently selected from 1, 4-butanediol diglycidyl ether (BDDE), 1-[3-(Dimethylamino)propyl]-3-ethylcarbodiimide methiodide (EDC), N,N′-dicyclohexylcarbodiimide (DCC), N,N′-diisopropylcarbodiimide (DIC), Divinyl Sulfone (DVS) and glutaraldehyde.

27. A method of preparing a double crosslinked dermal filler comprising a plant-derived recombinant human type-1 collagen crosslinked to a crosslinked hyaluronic acid, the method comprising:

crosslinking hyaluronic acid;

neutralization of the crosslinked hyaluronic acid;

neutralization of the plant-derived human collagen;

mixing the neutralized crosslinked hyaluronic acid with the neutralized plant-derived human collagen;

adding lower molecular weight hyaluronic acid (MW HA);

crosslinking the mix of crosslinked hyaluronic acid and plant-derived human collagen; and

dialyzing double crosslinked hyaluronic acid-plant-derived human collagen dermal filler.

Assignments (2)
SECURITY INTEREST Recorded May 20, 2026
From: EVENLITE, LLC
To: BMO BANK N.A., AS AGENT
Reel/Frame 074703/0514 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 19, 2024
From: SHOSEYOV, ODED; ORR, NADAV; SEROR MAKNOUZ, JASMINE; ZARKA, REVITAL
To: COLLPLANT LTD.
Reel/Frame 066175/0568 →
Continuity (3)
Division 17052216
Provisional Application 62666267 · May 3, 2018
Related Publication 20240042099A1 · Feb 8, 2024
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