1. A method for using a programmable system-on-a-chip including an analog-to-digital converter (ADC) to monitor power supply current comprising:
sampling a power line current at a predetermined sampling rate;
inputting a sampled current value to an ADC;
converting the sampled current value to a digital value;
comparing the digital value to a first warning threshold and setting a flag if the digital value exceeds the first warning threshold;
comparing the digital value to a shutdown threshold and disabling at least one power MOSFET if the digital value exceeds the shutdown threshold;
comparing the digital value to a second warning threshold and setting a flag if the second warning threshold exceeds the digital value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for shaping a tissue matrix, comprising:
selecting a collagen-containing tissue matrix;
partially dehydrating the tissue matrix;
applying mechanical forces to the tissue matrix to change the orientation of collagen fibers within the tissue matrix; and
exposing the tissue matrix to radiation.
2. The method of claim 1, wherein the tissue matrix is an acellular tissue matrix.
3. The method of claim 1, wherein the tissue matrix comprises a dermal tissue matrix.
4. The method of claim 1, wherein the tissue is selected from fascia, pericardial tissue, dura, umbilical cord tissue, placental tissue, cardiac valve tissue, ligament tissue, tendon tissue, arterial tissue, venous tissue, neural connective tissue, urinary bladder tissue, ureter tissue, and intestinal tissue.
5. The method of claim 1, wherein partially dehydrating the tissue matrix includes removing water to produce a tissue matrix containing between 95% (ww) and 50% (ww) water content.
6. The method of claim 5, wherein the water content is between 80% (ww) and 65% (ww).
7. The method of claim 1, further comprising rehydrating the tissue matrix.
8. The method of claim 1, wherein the radiation is applied at a dose between 5 Gy and 50 kGy.
9. The method of claim 1, wherein the radiation is applied at a dose between 5 Gy and 20 kGy.
10. The method of claim 1, wherein the radiation is applied at a dose of less than 10 kGy.
11. The method of claim 1, wherein the radiation is applied at a dose of less than 5 kGy.
12. The method of claim 1, wherein the radiation is applied at a dose of less than 1 kGy.
13. The method of claim 1, wherein the radiation is selected from gamma radiation, e-beam radiation, and X-ray radiation.
14. A tissue product, comprising:
an extracellular tissue matrix comprising collagen, wherein the extracellular tissue matrix has a stable three-dimensional shape formed by a process, comprising:
partially dehydrating the extracellular tissue matrix;
applying mechanical forces to the tissue matrix to reorient collagen fibers within the tissue matrix; and
exposing the tissue matrix to radiation.
15. The product of claim 14, wherein the tissue matrix is an acellular tissue matrix.
16. The product of claim 14, wherein the tissue matrix comprises a dermal tissue matrix.
17. The product of claim 14, wherein the tissue is selected from fascia, pericardial tissue, dura, umbilical cord tissue, placental tissue, cardiac valve tissue, ligament tissue, tendon tissue, arterial tissue, venous tissue, neural connective tissue, urinary bladder tissue, ureter tissue, and intestinal tissue.
18. The product of claim 14, wherein partially dehydrating the tissue matrix includes removing water to produce a tissue matrix containing between 95% (ww) and 50% (ww) water content.
19. The product of claim 18, wherein the water content is between 80% (ww) and 65% (ww).
20. The product of claim 14, wherein the three-dimensional shape is a cup-like shape.
21. The product of claim 14, wherein the three-dimensional shape is a tubular shape.
22. The product of claim 14, wherein the radiation is applied at a dose between 5 Gy and 50 kGy.
23. The product of claim 14, wherein the radiation is applied at a dose between 5 Gy and 20 kGy.
24. The product of claim 14, wherein the radiation is applied at a dose of less than 10 kGy.
25. The product of claim 14, wherein the radiation is applied at a dose of less than 5 kGy.
26. The product of claim 14, wherein the radiation is applied at a dose of less than 1 kGy.
27. The product of claim 14, wherein the radiation is selected from gamma radiation, e-beam radiation, and X-ray radiation.
28. The product of claim 14, wherein the tissue matrix has a permeability to fluids that is less than the permeability of the tissue matrix before dehydration, application of mechanical forces, and radiation.
29. A tissue product, comprising:
an extracellular tissue matrix comprising collagen fibers, wherein at least some of the collagen fibers within the matrix have an orientation that is different than the orientation of the fibers in a tissue from which the matrix is produced and the matrix forms a stable three dimensional shape, and wherein the matrix has a denaturation temperature as measured with differential scanning calorimetry that is within 5\xb0 C. of the denaturation temperature of the tissue from which the matrix is produced.
30. The product of claim 29, wherein the denaturation temperature as measure with differential scanning calorimetry that is within 3\xb0 C. of the denaturation temperature of the tissue from which the matrix is produced.
31. The product of claim 29, wherein the tissue matrix is an acellular tissue matrix.
32. The product of claim 29, wherein the tissue matrix comprises a dermal tissue matrix.
33. The product of claim 29, wherein the tissue is selected from fascia, pericardial tissue, dura, umbilical cord tissue, placental tissue, cardiac valve tissue, ligament tissue, tendon tissue, arterial tissue, venous tissue, neural connective tissue, urinary bladder tissue, ureter tissue, and intestinal tissue.
34. The product of claim 29, wherein the extracellular tissue matrix forms a stable three dimensional shape that is different than a three-dimensional shape of a tissue from which the tissue matrix is produced.
35. The product of claim 29, wherein the three-dimensional shape is a cup-like shape.
36. The product of claim 29, wherein the three-dimensional shape is a tubular shape.
37. The product of claim 29, wherein the radiation is applied at a dose between 5 Gy and 50 kGy.
38. The product of claim 29, wherein the radiation is applied at a dose between 5 Gy and 20 kGy.
39. The product of claim 29, wherein the product is substantially impermeable to fluids.
40. A tissue product, comprising:
an extracellular tissue matrix comprising collagen fibers, wherein at least some of the collagen fibers within the matrix have an orientation that is different than the orientation of the fibers in a tissue from which the matrix is produced, and wherein the matrix forms a stable three-dimensional shape without use of chemical cross-linking agents.
41. The product of claim 40, wherein the tissue matrix is an acellular tissue matrix.
42. The product of claim 40, wherein the tissue matrix comprises a dermal tissue matrix.
43. The product of claim 40, wherein the extracellular tissue matrix forms a stable three dimensional shape that is different than a three-dimensional shape of a tissue from which the tissue matrix is produced.