Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Operating activities
Net loss	$ (1,934,000)	$ (3,844,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	503,000	89,000
Amortization of stock issued for services	22,000	614,000
Stock issued under severance agreements		805,000
Stock issued to investors to amend subscription agreements	131,000
Depreciation and amortization	51,000	73,000
Change in fair value of derivative liability	1,000	58,000
Changes in operating assets and liabilities:
Accounts receivable		(13,000)
Inventories	18,000	(65,000)
Prepaid expenses	(80,000)	(4,000)
Accounts payable and accrued liabilities	(955,000)	42,000
Deferred rent	(1,000)	(1,000)
Net cash used in operating activities	(2,244,000)	(2,246,000)
Investing activities
Investment in patents	(4,000)	(12,000)
Purchases of property, plant and equipment		(11,000)
Net cash used in investing activities	(4,000)	(23,000)
Financing activities
Net proceeds from the sale of common stock	7,493,000	3,163,000
Net proceeds from the exercise of warrants		163,000
Payment on note payable		(21,000)
Net cash provided by financing activities	7,493,000	3,305,000
Net increase in cash and cash equivalents	5,245,000	1,036,000
Cash and cash equivalents at beginning of period	86,000	32,000
Cash and cash equivalents at end of period	5,331,000	1,068,000
Supplemental disclosure of cash flow information
Cash paid for taxes
Supplemental disclosure of non-cash investing and financing activities
Common stock issued for prepaid services		175,000
Common stock issued in connection with financing		252,000
Settlement of warrant liability		$ 56,000