IP Library Granted Patent US 11,395,837
Granted Patent B2
US 11,395,837 · App. 17/106,916 · Granted Jul 26, 2022

Placental tissue component compositions for treatment of skin defects and methods using same

Inventors: Rick LeVaughn (Marietta, GA); Sivakkumar Arjunon (Marietta, GA); Olivia Taylor (Marietta, GA)
Assignee: MiMedx Group, Inc.
A61K35/50A61K9/0019A61K9/146A61K9/19A61K35/51A61L27/3683A61L27/3804
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Quick Facts
Patent No.
US 11,395,837
App. No.
17/106,916
Filed
Nov 30, 2020
Granted
Jul 26, 2022
Kind
B2
Examiner
MI, QIUWEN
Art Unit
1655
USPC
424/583
Abstract

The present disclosure provides methods of treating defects such as wrinkles or scars via a subdermal injection of placental tissue components. It also provides placental tissue compositions maintained within the barrel of a syringe, which may be for use in treating such defects.

Claims (16)

1. A method of preparing an injectable placental tissue composition, said method comprising:

a) decellularizing placental disk;

b) dehydrating the placental disk;

c) dehydrating one or more of amniotic membrane, chorionic membrane, and umbilical cord;

d) combining the dehydrated placental disk with the one or more of dehydrated amniotic membrane, chorionic membrane, and umbilical cord; and

e) milling the composition formed in step d) so as to form dehydrated particles.

2. The method of claim 1 , further comprising sifting the dehydrated particles using a sieve having a size from 50-500 μm.

3. The method of claim 2 , further comprising rehydrating the sifted, dehydrated particles so as to form a rehydrated composition.

4. The method of claim 3 , further comprising placing the rehydrated composition in a syringe.

5. The method of claim 1 , wherein the dehydrated particles are about 1-20% dehydrated amniotic membrane and/or chorionic membrane particles, if present, about 1-30% dehydrated umbilical cord particles, if present, and about 50-98% dehydrated, decellularized placental disc particles, by weight.

6. The method of claim 1 , wherein the particles comprise placental disc and amniotic membrane.

7. The method of claim 1 , wherein the particles comprise placental disc and chorionic membrane.

8. The method of claim 1 , wherein the particles comprise placental disc, amniotic membrane, and chorionic membrane.

9. The method of claim 1 , wherein the particles comprise placental disc and umbilical cord.

10. The method of claim 1 , wherein the particles comprise placental disc, amniotic membrane, chorionic membrane, and umbilical cord.

11. The method of claim 1 , wherein the particles have a size from about 50-150 μm.

Assignments (2)
SECURITY INTEREST Recorded Jan 25, 2024
From: MIMEDX GROUP, INC.
To: CITIZENS BANK, N.A.
Reel/Frame 066371/0136 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2021
From: LEVAUGHN, RICK; ARJUNON, SIVAKKUMAR; TAYLOR, OLIVIA
To: MIMEDX GROUP, INC.
Reel/Frame 055441/0700 →