Common use of AMENDMENTS; WAIVERS; TERMINATIONS; GOVERNING LAW; HEADINGS Clause in Contracts

AMENDMENTS; WAIVERS; TERMINATIONS; GOVERNING LAW; HEADINGS. This Selling Agent’s Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. This Selling Agent’s Warrant shall be governed by and construed and interpreted in accordance with the laws of the State of Florida. The headings in this Selling Agent’s Warrant are for convenience of reference only and are not part of this Selling Agent’s Warrant. DATED: , 2005 iVOW, Inc. By: FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers to the right represented by the within Selling Agent’s Warrant, No. SAW2-1, as such right may apply to shares of Common Stock which are the subject of the within Selling Agent’s Warrant, together with all rights, title and interest therein, and does hereby irrevocably constitute and appoint attorney to transfer such Selling Agent’s Warrant on the warrant register of the within named Company, with full power of substitution. DATED: , 2005. Signature: (Signature must conform in all respects to name of Holder as specified on the face of the Selling Agent’s Warrant) Signature Guaranteed:

AMENDMENTS; WAIVERS; TERMINATIONS; GOVERNING LAW; HEADINGS. This Selling Agent’s Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. This Selling Agent’s Warrant shall be governed by and construed and interpreted in accordance with the laws of the State of Florida. The headings in this Selling Agent’s Warrant are for convenience of reference only and are not part of this Selling Agent’s Warrant. DATED: February 22, 2005 2006 iVOW, Inc. By: FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers to the right represented by the within Selling Agent’s Warrant, No. SAW2-1IVOWDJ- , as such right may apply to shares of Common Stock Units which are the subject of the within Selling Agent’s Warrant, together with all rights, title and interest therein, and does hereby irrevocably constitute and appoint attorney to transfer such Selling Agent’s Warrant on the warrant register of the within named Company, with full power of substitution. DATED: , 2005. 200 Signature: (Signature must conform in all respects to name of Holder as specified on the face of the Selling Agent’s Warrant) Signature Guaranteed:

AMENDMENTS; WAIVERS; TERMINATIONS; GOVERNING LAW; HEADINGS. This Selling Agent’s Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. This Selling Agent’s Warrant shall be governed by and construed and interpreted in accordance with the laws of the State of Florida. The headings in this Selling Agent’s Warrant are for convenience of reference only and are not part of this Selling Agent’s Warrant. DATED: May 26, 2005 iVOW2004 VISTA MEDICAL TECHNOLOGIES, Inc. INC. By: /s/ Xxxxxxx X. Xxxxx FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers to the right represented by the within Selling Agent’s Warrant, No. SAW2-1SAW-1, as such right may apply to shares of Common Stock which are the subject of the within Selling Agent’s Warrant, together with all rights, title and interest therein, and does hereby irrevocably constitute and appoint attorney to transfer such Selling Agent’s Warrant on the warrant register of the within named Company, with full power of substitution. DATED: , 20052004. Signature: (Signature must conform in all respects to name of Holder as specified on the face of the Selling Agent’s Warrant) Signature Guaranteed: