v3.23.1
Summary of Significant Accounting Policies - Additional Information (Details)
9 Months Ended 12 Months Ended
Jun. 10, 2022
shares
Jan. 31, 2023
USD ($)
$ / shares
Jan. 31, 2022
USD ($)
Apr. 30, 2022
USD ($)
$ / shares
Apr. 30, 2021
USD ($)
$ / shares
Jun. 03, 2022
$ / shares
Summary of Significant Accounting Policies [Line Items]            
Useable life of device over years   7 years   7 years    
Contract assets from contracts with customers   $ 0   $ 0 $ 0  
Contract liabilities from contracts with customers   0   0 0  
Remaining performance obligations   0   0 0  
Depreciation   20,090 $ 20,070 26,566 $ 32,967  
Deferred offering costs   $ 0   $ 246,400    
Reverse stock split, description   1-for-33 reverse stock split   1-for-33 reverse stock split    
Pre-reverse split common stock issued | shares 33          
Pre-reverse split common stock outstanding | shares 33          
Common stock, par value | $ / shares   $ 0.001   $ 0.001 $ 0.001 $ 0.001
Cash in excess of federal insured amount       $ 668,260 $ 473,481  
Percentage of debt instruments       31.00% 54.00%  
Reverse stock split, conversion ratio 0.033     0.033    
Minimum            
Summary of Significant Accounting Policies [Line Items]            
Estimated useful lives   3 years   3 years    
Customers payment terms   30 days   30 days    
Maximum            
Summary of Significant Accounting Policies [Line Items]            
Estimated useful lives   5 years   5 years    
Lease term   12 months   12 months    
Customers payment terms   60 days   60 days