Organization and Liquidity - Additional Information (Detail)						12 Months Ended
	Sep. 28, 2016 USD ($) shares	Jul. 05, 2016 USD ($) shares	Jun. 07, 2016 USD ($) Tranche shares	Apr. 04, 2015 USD ($) shares	Nov. 15, 2013 shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($)
Organization Nature Of Operations And Liquidity [Line Items]
Incorporation date						Dec. 22, 2003
Cash and cash equivalents						$ 930,397	$ 21,547	$ 216,733
Working capital deficit						3,500,000
Accumulated deficit						(117,449,942)	(114,531,714)
Net cash used in operating activities						(2,023,607)	(1,052,895)
Proceeds from sales or subscription of common stock						3,000,000	$ 600,000
Proceeds from preferred stock issuable						$ 3,000,000
Number of tranches | Tranche			2
Business acquisition, purchase of number of shares | shares					33,441
Shenzhen Qianhai Taxus [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Business acquisition, date of agreement						Apr. 04, 2015
Business acquisition, purchase price				$ 3,000,000
Business acquisition, purchase of number of shares | shares				600,000
Payment for business acquisition				$ 600,000
Series A Convertible Preferred Stock [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Series A Convertible Preferred stock, shares authorized | shares						40,000,000	40,000,000
Series A Convertible Preferred stock, shares issued | shares						928	1,041
Series A Convertible Preferred Stock [Member] | Initial Tranche [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Proceeds from preferred stock issuable		$ 1,000,000
Series A Convertible Preferred stock, shares issued | shares		200,000
Series A Convertible Preferred Stock [Member] | Second Tranche [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Proceeds from preferred stock issuable	$ 2,000,000
Series A Convertible Preferred stock, shares issued | shares	400,000
Angionetics Inc. [Member] | Series A Convertible Preferred Stock [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Proceeds from preferred stock issuable	$ 2,000,000	$ 1,000,000
Series A Convertible Preferred stock, shares issued | shares	400,000	200,000
Share Purchase Agreement [Member] | Angionetics Inc. [Member] | Series A Convertible Preferred Stock [Member]
Organization Nature Of Operations And Liquidity [Line Items]
Series A Convertible Preferred stock, shares authorized | shares			600,000
Proceeds from preferred stock issuable			$ 3,000,000