Revenue Recognition (Details) - USD ($)	1 Months Ended		12 Months Ended
	Jun. 30, 2020	Apr. 30, 2020	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Revenue Recognition (Details) [Line Items]
Income grants (in Dollars)	$ 1,496	$ 1,496
Clinical Services Revenue [Member]
Revenue Recognition (Details) [Line Items]
Percentage of clinical services business			74.00%	63.00%	63.00%