| Note 6 - Related Party Notes Payable | 3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Mar. 31, 2012 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Notes Payable [Text Block] | 
     
      6.    
    
      Related
 
      Party Notes Payable
    
     
    
      Related
  
      Party BSC Convertible Notes Payable
     
     
    
      In
  
      October 2009, the Company entered into a convertible note
    
      payable arrangement with BSC. During October, November and
     
      December 2009, the Company borrowed an aggregate of
   
      $3,500,000 from BSC under this arrangement pursuant to three
  
      convertible notes payable (the “BSC Notes”).
 
      These borrowings accrued interest at 10% per year and were
     
      scheduled to mature on the second anniversary of the date on
  
      which the funds were advanced.  Effective February
     
      2, 2012, the Company entered into a loan modification (also
 
      see Note 5) with BSC pursuant to which (i) interest accrued
 
      under each of the BSC Notes as of February 2, 2012 was added
  
      to the principal balance of the note, (ii) beginning February
   
      2, 2012, the interest rate of each of the BSC Notes was
  
      reduced from 10% per year to 0%, and (iii) the maturity date
  
      of each of the BSC Notes was extended by three years (until
 
      October through December 2014).  As of February 2,
     
      2012, the outstanding aggregate loan balance, including
  
      principal and interest, owed to BSC was
 
      $4,338,601.  Pursuant to ASC 470-60, Troubled Debt
     
      Restructurings by Debtors, the loan modification was
    
      considered a “Troubled Debt Restructuring”.
     
      However, because the total future cash payments required
   
      under the new terms of the BSC Notes were not reduced from
     
      what was owed at the time of the loan modification, no gain
 
      was recorded under Troubled Debt Restructuring
   
      accounting.
 
     
    
      The
   
      Company will be required to prepay all or a portion of the
     
      BSC Notes upon the consummation of any future
  
      “qualified financing,” which is defined as any
   
      equity financing in which shares of the Company’s
 
      preferred stock are issued  in exchange for cash
   
      proceeds. Upon consummation of a qualified financing from
    
      Medtronic, Inc., St. Jude Medical, Inc., or Johnson &
   
      Johnson, or any of their respective subsidiaries or
   
      affiliates, up to 100% of the cash proceeds from such
     
      qualified financing must be used to prepay the outstanding
     
      balance of the BSC Notes. Upon consummation of a qualified
     
      financing from any other investor, up to 25% of the cash
   
      proceeds from such qualified financing must be applied by the
   
      Company to prepay the outstanding balance of the BSC Notes.
 
      The Company has not conducted a qualified financing since
    
      entering into the loan arrangement with BSC under which the
 
      Company issued the BSC Notes. The Company can prepay the BSC
  
      Notes at any time. Each of the BSC Notes is convertible, at
 
      the option of the holder, at any time prior to the earlier of
   
      the maturity date or the consummation of a qualified initial
  
      public offering (which is defined as a bona fide first
 
      underwritten public offering of the Company’s common
    
      stock on a firm commitment basis in which the aggregate gross
   
      proceeds received by the Company at the public offering price
   
      equals or exceeds $20,000,000), into one share of the
     
      Company’s  preferred stock at a conversion
  
      price equal to the lower of $8.00 per share or the price per
  
      share paid by investors in a future qualified
  
      financing  conducted  by the Company. The
    
      terms of the preferred stock into which BSC may elect to
   
      convert the BSC Notes, other than in the context of a
     
      qualified financing, must be agreed upon between the Company
  
      and BSC no later than May 31, 2012. The BSC Notes are secured
   
      by a first priority security interest in all of the
   
      Company’s assets.
  
     
    
      Related
  
      Party 2011 Unsecured Convertible Notes Payable
 
     
    
      In
  
      June through September 2011, the Company issued unsecured
    
      convertible notes (the “Summer 2011 Notes”) in
   
      the aggregate amount of $1,310,000 to six non-employee
 
      directors of the Company. The note holders also received
   
      warrants to purchase 1,310,000 shares of the Company’s
 
      common stock in the aggregate. The Summer 2011 Notes had
   
      two-year maturities and accrued interest at 15% per year. The
   
      warrants were fully vested upon issuance, have a term of five
   
      years, and have an exercise price of $0.01 per share. The
    
      original terms of the Summer 2011 Notes provided for
    
      automatic conversion of the notes into shares of the
    
      Company’s common stock upon consummation of an initial
 
      public offering of shares of the Company’s common
 
      stock, based on a conversion price equal to 60% of the public
   
      offering price. In addition, the original terms of the Summer
   
      2011 Notes provided for optional conversion of the notes, at
  
      the election of the note holder, upon consummation of a
  
      reverse merger of the Company into a public shell company,
     
      based on a conversion price equal to 60% of the fair market
 
      value of the Company’s common stock at the time of the
 
      merger. The Summer 2011 Notes were amended in December 2011
 
      to provide for automatic conversion of the principal and all
  
      accrued interest into shares of the Company’s common
    
      stock upon the effectiveness of a Form 10 filed by the
 
      Company with the SEC under the Exchange Act, based on a
  
      conversion price of $0.60 per share. Upon the effectiveness
 
      of the Company’s Form 10 on February 27, 2012, all of
     
      the Summer 2011 Notes, representing an aggregate of
   
      $1,425,865 in principal and accrued interest, were converted
  
      into 2,376,447 shares of the Company’s common
  
      stock.  In conjunction with the conversion of the
    
      Summer 2011 Notes, the Company applied the guidance in ASC
     
      470-20, Debt with Conversion and Other Options, and wrote-off
   
      the unamortized discount of $405,602 associated with the
   
      relative fair value of the warrants, which were issued with
 
      the Summer 2011 Notes, against additional paid-in
 
      capital.
   
     
    
      The
   
      table below summarizes related party notes payable at:
    
     
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