Viable disc regenerative composition and method of manufacture and use
A viable disc regenerative composition has a micronized material of nucleus pulposus and a biological composition made from a mixture of mechanically selected allogeneic biologic material derived from bone marrow having non-whole cellular components including vesicular components and active and inactive components of biological activity, cell fragments, cellular excretions, cellular derivatives, and extracellular components; and wherein the mixture is compatible with biologic function and further includes non-expanded whole cells. The biological composition is predisposed to demonstrate or support elaboration of active volume or spatial geometry consistent in morphology with that of disc tissue. The viable disc regenerative composition extends regenerative resonance that compliments or mimics disc tissue complexity.
1. A method of making a viable disc regenerative composition, comprising:
a) obtaining bone marrow from cadaverous bone that has been cut to form bulk cortical-cancellous bone chips;
b) separating cellular and non-cellular components of bone marrow from cadaverous bone utilizing four cycles of tumbling, sieving and decanting, in cycle 1 the bulk cortical-cancellous bone chips are tumbled with processing media, sieved then fluid is decanted, the decanted fluid is discarded, in cycles 2-4 the bulk cortical-cancellous bone chips are tumbled again with processing media, sieved then fluid is decanted, the decanted fluid from cycles 2-4 are then combined to form a decanted fluid containing the cellular and non-cellular components of bone marrow;
c) concentrating the cellular and non-cellular components of bone marrow from the decanted fluid by centrifugation and filtering;
d) separating the cellular and non-cellular components of bone marrow by density gradient centrifugation;
e) collecting cells or non-cellular components or combinations thereof;
f) washing the cells or non-cellular components or combinations thereof to create a mixture;
g) suspending the mixture in a polyampholyte cryoprotectant;
h) freezing the mixture; and
i) adding to the mixture a composition of micronized nucleus pulposus having particles in the size range of less than 300 μm.
2. A method of making a viable disc regenerative composition, comprising:
a) obtaining bone marrow from cadaverous bone that has been cut to form bulk cortical-cancellous bone chips;
b) separating cellular and non-cellular components of bone marrow from cadaverous bone utilizing four cycles of tumbling, sieving and decanting, in cycle 1 the bulk cortical-cancellous bone chips are tumbled with processing media, sieved then fluid is decanted, the decanted fluid is discarded, in cycles 2-4 the bulk cortical-cancellous bone chips are tumbled again with processing media, sieved then fluid is decanted, the decanted fluid from cycles 2-4 are then combined to form a decanted fluid containing the cellular and non-cellular components of bone marrow;
c) concentrating the cellular and non-cellular components of bone marrow from the decanted fluid by centrifugation and filtering;
d) separating the cellular and non-cellular components of bone marrow by density gradient centrifugation;
e) collecting cells or non-cellular components or combinations thereof;
f) washing the cells or non-cellular components or combinations thereof to create a mixture;
g) suspending the mixture in a polyampholyte cryoprotectant;
h) freezing the mixture; and
i) packaging separately (a) the mixture and (b) a composition of micronized nucleus pulposus having particles in the size range of less than 300 μm.
3. The method of making a viable disc regenerative composition of claim 2 , wherein the micronized nucleus pulposus is made by the following steps:
a) obtaining cadaveric spine segments having discs with cancellous bone and vertebral endplate junctions;
b) removing the discs by cutting between the cancellous bone and the vertebral endplate junctions;
c) removing normal nucleus pulposus;
d) freeze drying the normal nucleus pulposus from multiple disc segments; and
e) placing the freeze dried normal nucleus pulposus into a cryomill to produce the micronized nucleus pulposus.
4. The method of claim 3 , wherein the cadaveric spine segments are from T9 to L5.
5. The method of claim 3 , further comprising
f) placing the micronized disc material from step e) into a sterile container for later use.
6. The method of claim 5 , further comprising
g) rehydrating the micronized disc material and introducing the rehydrated material into a syringe or injectable device.