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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2024
Summary of Significant Accounting Policies [Abstract]  
Inventory Stated at Cost, Net of Reserve
Inventory stated at cost, consisted of the following as of December 31:

   
2024
   
2023
 
Materials
 
$
1,308,863
     
367,934
 
Work in progress
   
982,630
     
128,993
 
Finished goods
   
754,830
     
170,191
 
Inventory
 
$
3,046,323
     
667,118
 
Other Assets The Company has included these amounts on the accompanying balance sheets as follows as of December 31:

   
2024
   
2023
 
Prepaid and other current assets
 
$
315,897
     
224,000
 
Other long-term assets
   
714,912
     
704,234
 
Research tax credits available to the Company
 
$
1,030,809
     
928,234
 
Estimated Useful Lives of Assets Depreciation and amortization are computed using the straight‑line method over estimated useful lives of assets as follows:

Leasehold improvements
Shorter of lease term(s) or useful life
Office equipment
5 years
Furniture and fixtures
7 years
Machinery and equipment
5 to 7 years
Intangible Assets Intangible assets consist of the following as of December 31:
 
   
2024
   
2023
 
Cost
 
$
1,755,009
     
1,668,951
 
Accumulated amortization
   
(1,689,091
)
   
(1,668,951
)
Net book value
 
$
65,918
     
 
Accrued Expenses
Accrued expenses consisted of the following as of December 31:

   
2024
   
2023
 
Incentive and other compensation costs
  $ 650,768       1,082,606  
Clinical trial costs
   
354,762
     
276,141
 
Director fees
   
70,000
     
60,210
 
Franchise taxes           12,160  
Other
   
75,519
     
13,179
 
Accrued expenses
 
$
1,151,049
     
1,444,296
 
Clinical Holdback Liability
The following table shows the activity within the clinical holdback liability accounts for the year ended December 31, 2024:

Balance at December 31, 2023
 
$
120,235
 
Clinical holdback retained
   
19,452
 
Clinical holdback paid
   
(11,495
)
Balance at December 31, 2024
 
$
128,192
 
Less: clinical holdback - current portion
   
(88,581
)
Clinical holdback - long-term portion
 
$
39,611
 
 
The following table shows the activity within the clinical holdback liability accounts for the year ended December 31, 2023:

Balance at December 31, 2022
 
$
141,864
 
Clinical holdback retained
   
5,900
 
Clinical holdback paid
   
(27,529
)
Balance at December 31, 2023
 
$
120,235
 
Less: clinical holdback - current portion
   
(65,300
)
Clinical holdback - long-term portion
 
$
54,935
 

Sales by Geographic Region
The following table summarizes the Company’s sales by geographic region for the years ending December 31:

Primary geographical markets
 
2024
   
2023
U.S.
 
$
1,073,508
     
1,013,925
International
   
555,600
     
58,045
Total
 
$
1,629,108
     
1,071,970