Condensed Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Operating activities
Net loss	$ (7,627,000)	$ (11,050,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	2,382,000	2,958,000
Amortization of stock issued for services	115,000	679,000
Stock issued under severance agreements		825,000
Stock issued to investors to amend subscription agreements		285,000
Settlement of vendor payables		182,000
Fair value of penalty warrants issued		23,000
Gain on extinguishment of debt		(727,000)
Gain on fixed asset sale		7,000
Stock issued for services		25,000
Warrants Issued For Services		121,000
Depreciation and amortization	206,000	248,000
Change in fair value of derivative liability	(5,000)	55,000
Inventory reserve	0	128,000
Changes in operating assets and liabilities:
Accounts receivable	(142,000)	(29,000)
Inventories	42,000	(12,000)
Restricted cash	(75,000)
Prepaid expenses		66,000
Accounts payable and accrued liabilities	(955,000)	(96,000)
Deferred rent	(4,000)
Net cash used in operating activities	(6,063,000)	(6,326,000)
Investing activities
Investment in patents	(26,000)	(91,000)
Proceeds from sale of fixed assets		66,000
Purchases of property, plant and equipment	(81,000)	(21,000)
Net cash used in investing activities	(107,000)	(46,000)
Financing activities
Net proceeds from the sale of common stock	7,401,000	6,617,000
Net proceeds from the exercise of warrants	4,000	337,000
Payment on note payable		(528,000)
Net cash provided by financing activities	7,405,000	6,426,000
Net increase in cash and cash equivalents	1,235,000	54,000
Cash and cash equivalents at beginning of period	86,000	32,000
Cash and cash equivalents at end of period	1,321,000	86,000
Supplemental disclosure of cash flow information
Cash paid for taxes	1,600	4,000
Supplemental disclosure of non-cash investing and financing activities
Common stock issued for prepaid services	$ 206,000	175,000
Common stock issued in connection with financing		376,000
Settlement of warrant liability		97,000
Issuance of common stock for the cashless exercise of warrants		$ 1,000