Document:

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                                                                    Exhibit 10.2

                      INVESTMENT MANAGEMENT TRUST AGREEMENT

            This Agreement is made as of ___________, 2005 by and between
HEALTHCARE ACQUISITION CORP. (the "COMPANY") and CONTINENTAL STOCK TRANSFER &
TRUST COMPANY (the "TRUSTEE").

            WHEREAS, the Company's Registration Statement on Form S-1, File No.
333-124712 (the "REGISTRATION STATEMENT"), for its initial public offering of
securities (the "IPO") has been declared effective as of the date hereof by the
Securities and Exchange Commission (the "EFFECTIVE DATE"); and

            WHEREAS, Maxim Group LLC ("MAXIM") is acting as the representative
of the underwriters in the IPO; and

            WHEREAS, as described in the Company's Registration Statement, and
in accordance with the Company's Certificate of Incorporation, $57,600,000 of
the gross proceeds of the IPO ($66,414,000 if the underwriters over-allotment
option is exercised in full) will be delivered to the Trustee to be deposited
and held in a trust account for the benefit of the Company and the holders of
the Company's common stock, par value $.0001 per share, issued in the IPO as
hereinafter provided (the amount to be delivered to the Trustee will be referred
to herein as the "PROPERTY"; the stockholders for whose benefit the Trustee
shall hold the Property will be referred to as the "PUBLIC STOCKHOLDERS," and
the Public Stockholders and the Company will be referred to together as the
"BENEFICIARIES"); and

            WHEREAS, the Company and the Trustee desire to enter into this
Agreement to set forth the terms and conditions pursuant to which the Trustee
shall hold the Property;

            NOW, THEREFORE, in consideration of the mutual agreements herein
contained, the parties hereto agree as follows:

        1.  Agreements and Covenants of Trustee. The Trustee hereby agrees and
covenants to:

              (a) Hold the Property in trust for the Beneficiaries in accordance
with the terms of this Agreement in a segregated trust account ("TRUST ACCOUNT")
established by the Trustee at a branch of JPMorgan Chase NY Bank selected by the
Trustee;

              (b) Manage, supervise and administer the Trust Account subject to
the terms and conditions set forth herein;

              (c) In a timely manner, upon the instruction of the Company, to
invest and reinvest the Property in any "GOVERNMENT SECURITY." As used herein,
Government Security means any Treasury Bill issued by the United States, having
a maturity of one hundred and eighty days or less;

<PAGE>

              (d) Collect and receive, when due, all principal and income
arising from the Property, which shall become part of the "PROPERTY," as such
term is used herein;

              (e) Promptly notify the Company of all communications received by
it with respect to any Property requiring action by the Company;

              (f) Supply any necessary information or documents as may be
requested by the Company in connection with the Company's preparation of the tax
returns for the Trust Account;

              (g) Participate in any plan or proceeding for protecting or
enforcing any right or interest arising from the Property if, as and when
instructed by the Company to do so;

              (h) Render to the Company and to Maxim, and to such other person
as the Company may instruct, monthly written statements of the activities of and
amounts in the Trust Account reflecting all receipts and disbursements of the
Trust Account; and

              (i) Commence liquidation of the Trust Account only after receipt
of and only in accordance with the terms of a letter ("TERMINATION LETTER"), in
a form substantially similar to that attached hereto as either Exhibit A or
Exhibit B, signed on behalf of the Company by its Chief Executive Officer or
President and Secretary, and complete the liquidation of the Trust Account and
distribute the Property in the Trust Account only as directed in the Termination
Letter and the other documents referred to therein. The Trustee understands and
agrees that disbursements from the Trust Account shall be made only pursuant to
a duly executed Termination Letter, together with the other documents referenced
herein. In all cases, the Trustee shall provide Maxim with a copy of any
Termination Letters and/or any other correspondence that it receives with
respect to any proposed withdrawal from the Trust Account promptly after it
receives same.

       2. Agreements and Covenants of the Company. The Company hereby agrees
and covenants to:

              (a) Give all instructions to the Trustee hereunder in writing,
signed by the Company's Chief Executive Officer or President. In addition,
except with respect to its duties under paragraph 1(i) above, the Trustee shall
be entitled to rely on, and shall be protected in relying on, any verbal or
telephonic advice or instruction which it in good faith believes to be given by
any one of the persons authorized above to give written instructions, provided
that the Company shall promptly confirm such instructions in writing;

              (b) Hold the Trustee harmless and indemnify the Trustee from and
against, any and all expenses, including reasonable counsel fees and
disbursements, or loss suffered by the Trustee in connection with any action,
suit or other proceeding brought against the Trustee involving any claim, or in
connection with any claim or demand which in any way arises out of or relates to
this Agreement, the services of the Trustee hereunder, or the Property or any
income earned from investment of the Property, except for expenses and losses
resulting from the Trustee's gross negligence or willful misconduct. Promptly
after the receipt by the Trustee of notice of demand or claim or the
commencement of any action, suit or proceeding, pursuant to which the Trustee
intends to seek indemnification under this paragraph, it shall notify the
Company in writing of such claim (hereinafter referred to as the "INDEMNIFIED
CLAIM"). The Trustee shall have the right to conduct and manage the defense
against such Indemnified Claim, provided, that the Trustee shall obtain the
consent of the Company with respect to the selection of counsel, which consent
shall not be unreasonably withheld. The Trustee may not agree to settle any
Indemnified Claim without the prior written consent of the Company. The Company
may participate in such action with its own counsel; and

                                      -2-
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              (c) Pay the Trustee an initial acceptance fee of $1,000 and an
annual fee of $3,000 (it being expressly understood that the Property shall not
be used to pay such fee). The Company shall pay the Trustee the initial
acceptance fee and first year's fee at the consummation of the IPO and
thereafter on the anniversary of the Effective Date. The Trustee shall refund to
the Company the fee (on a pro rata basis) with respect to any period after the
liquidation of the Trust Fund. The Company shall not be responsible for any
other fees or charges of the Trustee except as may be provided in paragraph 2(b)
hereof (it being expressly understood that the Property shall not be used to
make any payments to the Trustee or be subject to any setoff or claim by the
Trustee, under such paragraph or under any other section of this Agreement).

        3.  Limitations of Liability. The Trustee shall have no responsibility
or liability to:

              (a) Take any action with respect to the Property, other than as
directed in paragraph 1 hereof and the Trustee shall have no liability to any
party except for liability arising out of its own gross negligence or willful
misconduct;

              (b) Institute any proceeding for the collection of any principal
and income arising from, or institute, appear in or defend any proceeding of any
kind with respect to, any of the Property unless and until it shall have
received instructions from the Company given as provided herein to do so and the
Company shall have advanced or guaranteed to it funds sufficient to pay any
expenses incident thereto;

              (c) Change the investment of any Property, other than in
compliance with paragraph 1(c);

              (d) Refund any depreciation in principal of any Property;

              (e) Assume that the authority of any person designated by the
Company to give instructions hereunder shall not be continuing unless provided
otherwise in such designation, or unless the Company shall have delivered a
written revocation of such authority to the Trustee;

              (f) The other parties hereto or to anyone else for any action
taken or omitted by it, or any action suffered by it to be taken or omitted, in
good faith and in the exercise of its own best judgment, except for its gross
negligence or willful misconduct. The Trustee may rely conclusively and shall be
protected in acting upon any order, notice, demand, certificate, opinion or
advice of counsel (including counsel chosen by the Trustee), statement,
instrument, report or other paper or document (not only as to its due execution
and the validity and effectiveness of its provisions, but also as to the truth
and acceptability of any information therein contained) which is believed by the
Trustee, in good faith, to be genuine and to be signed or presented by the
proper person or persons. The Trustee shall not be bound by any notice or
demand, or any waiver, modification, termination or rescission of this agreement
or any of the terms hereof, unless evidenced by a written instrument delivered
to the Trustee signed by the proper party or parties and, if the duties or
rights of the Trustee are affected, unless it shall give its prior written
consent thereto;

                                      -3-
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              (g) Verify the correctness of the information set forth in the
Registration Statement or to confirm or assure that any acquisition made by the
Company or any other action taken by it is as contemplated by the Registration
Statement; and

              (h) Pay any taxes on behalf of the Trust Account (it being
expressly understood that the Property shall not be used to pay any such taxes
and that such taxes, if any, shall be paid by the Company from funds not held in
the Trust Account).

         4. Termination. This Agreement shall terminate as follows:

              (a) If the Trustee gives written notice to the Company that it
desires to resign under this Agreement, the Company shall use its reasonable
efforts to locate a successor trustee, during which time the Trustee shall
continue to act in accordance with this Agreement. At such time that the Company
notifies the Trustee that a successor trustee has been appointed by the Company
and has agreed to become subject to the terms of this Agreement, the Trustee
shall transfer the management of the Trust Account to the successor trustee,
including but not limited to the transfer of copies of the reports and
statements relating to the Trust Account, whereupon this Agreement shall
terminate; provided, however, that, in the event that the Company does not
locate a successor trustee within ninety days of receipt of the resignation
notice from the Trustee, the Trustee may submit an application to have the
Property deposited with the United States District Court for the Southern
District of New York and upon such deposit, the Trustee shall be immune from any
liability whatsoever;

              (b) At such time that the Trustee has completed the liquidation of
the Trust Account in accordance with the provisions of paragraph 1(i) hereof,
and distributed the Property in accordance with the provisions of the
Termination Letter, this Agreement shall terminate except with respect to
Paragraph 2(b); or

              (c) On such date after _________, 2007, when the Trustee deposits
the Property with the United States District Court for the Southern District of
New York in the event that, prior to such date, the Trustee has not received a
Termination Letter from the Company pursuant to paragraph 1(i).

                                      -4-
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        5.  Miscellaneous.

              (a) The Company and the Trustee each acknowledge that the Trustee
will follow the security procedures set forth below with respect to funds
transferred from the Trust Account. Upon receipt of written instructions, the
Trustee will confirm such instructions with an Authorized Individual at an
Authorized Telephone Number listed on the attached Exhibit C. The Company and
the Trustee will each restrict access to confidential information relating to
such security procedures to authorized persons. Each party must notify the other
party immediately if it has reason to believe unauthorized persons may have
obtained access to such information, or of any change in its authorized
personnel. In executing funds transfers, the Trustee will rely upon account
numbers or other identifying numbers of a beneficiary, beneficiary's bank or
intermediary bank, rather than names. The Trustee shall not be liable for any
loss, liability or expense resulting from any error in an account number or
other identifying number, provided it has accurately transmitted the numbers
provided.

              (b) This Agreement shall be governed by and construed and enforced
in accordance with the laws of the State of New York, without giving effect to
conflict of laws. It may be executed in several counterparts, each one of which
may be delivered by facsimile transmission and each of which shall constitute an
original, and together shall constitute but one instrument.

              (c) This Agreement contains the entire agreement and understanding
of the parties hereto with respect to the subject matter hereof. This Agreement
or any provision hereof may only be changed, amended or modified by a writing
signed by each of the parties hereto; provided, however, that no such change,
amendment or modification may be made without the prior written consent of
Maxim, who, along with the other underwriters of the IPO, the parties
specifically agree, are and shall be a third-party beneficiary for purposes of
this Agreement. As to any claim, cross-claim or counterclaim in any way relating
to this Agreement, each party waives the right to trial by jury.

              (d) The parties hereto consent to the jurisdiction and venue of
any state or federal court located in the State and County of New York for
purposes of resolving any disputes hereunder. The parties hereto irrevocably
submit to such jurisdiction, which jurisdiction shall be exclusive. The parties
hereto hereby waive any objection to such exclusive jurisdiction and that such
courts represent an inconvenient forum.

              (e) Any notice, consent or request to be given in connection with
any of the terms or provisions of this Agreement shall be in writing and shall
be sent by express mail or similar private courier service, by certified mail
(return receipt requested), by hand delivery or by facsimile transmission:

         if to the Trustee, to:

             Continental Stock Transfer
               & Trust Company
             17 Battery Place
             New York, New York 10004
             Attn: Steven G. Nelson
             Fax No.: (212) 509-5150

                                      -5-
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         if to the Company, to:

             Healthcare Acquisition Corp.
             2116 Financial Center
             666 Walnut Street
             Des Moines, Iowa 50309
             Attn: Matthew P. Kinley
             Fax No.: (515) 244-2346

         in either case with a copy to:

             Maxim Group LLC
             405 Lexington Avenue
             New York, New York 10174
             Attn: Clifford Teller
             Fax No.: (212) 895-3500

              (f) This Agreement may not be assigned by the Trustee without the
prior consent of the Company.

              (g) Each of the Trustee and the Company hereby represents that it
has the full right and power and has been duly authorized to enter into this
Agreement and to perform its respective obligations as contemplated hereunder.
The Trustee acknowledges and agrees that it shall not make any claims or proceed
against the Trust Account, including by way of set-off, and shall not be
entitled to any funds in the Trust Account under any circumstance.

              (h) Each of the Company and the Trustee hereby acknowledge that
Maxim is a third party beneficiary of this Agreement.

                  [Remainder of Page Intentionally Left Blank]

                                      -6-
<PAGE>

           IN WITNESS WHEREOF, the parties have duly executed this Investment
Management Trust Agreement as of the date first written above.

                                          CONTINENTAL STOCK TRANSFER & TRUST
                                          COMPANY, as Trustee

                                          By:
                                          --------------------------
                                          Name:
                                          Title:

                                          HEALTHCARE ACQUISITION CORP.

                                          By:
                                          ---------------------------
                                          Name: Matthew P. Kinley
                                          Title: President

                                      -7-
<PAGE>

                                    EXHIBIT A

                             [LETTERHEAD OF COMPANY]

                                  [INSERT DATE]

Continental Stock Transfer
  & Trust Company
17 Battery Place
New York, New York 10004
Attn:  Steven Nelson

         Re: Trust Account No. _______________ Termination Letter

Gentlemen:

         Pursuant to paragraph 1(i) of the Investment Management Trust Agreement
between Healthcare Acquisition Corp. ("COMPANY") and Continental Stock Transfer
& Trust Company ("TRUSTEE"), dated as of ________, 2005 ("TRUST AGREEMENT"),
this is to advise you that the Company has entered into an agreement ("BUSINESS
AGREEMENT") with __________________ ("TARGET BUSINESS") to consummate a business
combination with Target Business (a "BUSINESS COMBINATION") on or about [INSERT
DATE]. The Company shall notify you at least 48 hours in advance of the actual
date of the consummation of the Business Combination ("CONSUMMATION DATE").

         In accordance with the terms of the Trust Agreement, we hereby
authorize you to commence liquidation of the Trust Account to the effect that,
on the Consummation Date, all of funds held in the Trust Account will be
immediately available for transfer to the account or accounts that the Company
shall direct on the Consummation Date.

         On the Consummation Date (i) counsel for the Company shall deliver to
you written notification that the Business Combination has been consummated and
(ii) the Company shall deliver to you written instructions with respect to the
transfer of the funds held in the Trust Account ("INSTRUCTION LETTER"). You are
hereby directed and authorized to transfer the funds held in the Trust Account
immediately upon your receipt of the counsel's letter and the Instruction
Letter, in accordance with the terms of the Instruction Letter. In the event
that certain deposits held in the Trust Account may not be liquidated by the
Consummation Date without penalty, you will notify the Company of the same and
the Company shall direct you as to whether such funds should remain in the Trust
Account and distributed after the Consummation Date to the Company. Upon the
distribution of all the funds in the Trust Account pursuant to the terms hereof,
the Trust Agreement shall be terminated.

                                      -8-
<PAGE>

         In the event that the Business Combination is not consummated on the
Consummation Date described in the notice thereof and we have not notified you
on or before the original Consummation Date of a new Consummation Date, then the
funds held in the Trust Account shall be reinvested as provided in the Trust
Agreement on the business day immediately following the Consummation Date as set
forth in the notice.

                                                 Very truly yours,

                                                 HEALTHCARE ACQUISITION CORP.

                                                 By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

                                                 By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

cc: Maxim Group LLC

                                      -9-
<PAGE>

                                    EXHIBIT B

                             [LETTERHEAD OF COMPANY]

                                  [INSERT DATE]

Continental Stock Transfer
  & Trust Company
17 Battery Place
New York, New York 10004
Attn:

         Re: Trust Account No. _______________ Termination Letter

Gentlemen:

         Pursuant to paragraph 1(i) of the Investment Management Trust Agreement
between Healthcare Acquisition Corp. ("COMPANY") and Continental Stock Transfer
& Trust Company ("TRUSTEE"), dated as of __________, 2005 ("TRUST AGREEMENT"),
this is to advise you that the Board of Directors of the Company has voted to
dissolve and liquidate the Trust Account. Attached hereto is a copy of the
minutes of the meeting of the Board of Directors of the Company relating
thereto, certified by the Secretary of the Company as true and correct and in
full force and effect.

         In accordance with the terms of the Trust Agreement, we hereby
authorize you, to commence liquidation of the Trust Account. You will notify the
Company and JPMorgan Chase NY Bank ("DESIGNATED PAYING Agent") in writing as to
when all of the funds in the Trust Account will be available for immediate
transfer ("TRANSFER DATE"). The Designated Paying Agent shall thereafter notify
you as to the account or accounts of the Designated Paying Agent that the funds
in the Trust Account should be transferred to on the Transfer Date so that the
Designated Paying Agent may commence distribution of such funds in accordance
with the Company's instructions. You shall have no obligation to oversee the
Designated Paying Agent's distribution of the funds. Upon the payment to the
Designated Paying Agent of all the funds in the Trust Account, the Trust
Agreement shall be terminated.

                  [Remainder of Page Intentionally Left Blank]

                                Very truly yours,

                                      -10-
<PAGE>

                                                 HEALTHCARE ACQUISITION CORP.

                                                 By:
                                                 -------------------------------
                                                 Name:
                                                 Title

                                                 By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

cc:  Maxim Group LLC

                                      -11-
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                                    EXHIBIT C

AUTHORIZED INDIVIDUAL(S)                             AUTHORIZED
FOR TELEPHONE CALL BACK                              TELEPHONE NUMBER(S)
-----------------------                              -------------------

COMPANY:

Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309
Attn: Matthew P. Kinley                              (575) 244-5746

TRUSTEE:

Continental Stock Transfer
  & Trust Company
17 Battery Place
New York, New York 10004
Attn:  Steven G. Nelson, Chairman                    (212) 845-3200

                                      -12-<PAGE>

                                                                    Exhibit 10.3

                             STOCK ESCROW AGREEMENT

         STOCK ESCROW AGREEMENT, dated as of __________, 2005 (the "AGREEMENT"),
by and among HEALTHCARE ACQUISITION CORP., a Delaware corporation (the
"COMPANY"), JOHN PAPPAJOHN, DERACE L. SCHAFFER, M.D., MATTHEW P.KINLEY, EDWARD
B. BERGER AND WAYNE A. SCHELLHAMMER (collectively the "INITIAL STOCKHOLDERS")
and CONTINENTALSTOCK TRANSFER & TRUST COMPANY, a New York corporation (the
"ESCROW AGENT").

         WHEREAS, the Company has entered into an Underwriting Agreement, dated
__________, 2005 (the "UNDERWRITING AGREEMENT"), with Maxim Group LLC ("MAXIM")
acting as representative of the several underwriters (collectively, the
"UNDERWRITERS"), pursuant to which, among other matters, the Underwriters have
agreed topurchase 8,000,000 units (the "UNITS") of the Company. Each Unit
consists of one share of the Company's Common Stock, par value $.0001 per share,
and one Warrant, each Warrant to purchase one share of Common Stock, all as more
fully described in the Company's final Prospectus, dated ___________, 2005 (the
"PROSPECTUS") comprising part of the Company's Registration Statement on Form
S-1 (File No. 333-124712) under the Securities Act of 1933, as amended (the
"REGISTRATION STATEMENT"), declared effective on _________, 2005 (the "EFFECTIVE
DATE").

         WHEREAS, the Initial Stockholders have agreed as a condition of the
sale of the Units to deposit their shares of Common Stock of the Company, as set
forth opposite their respective names in Exhibit A attached hereto (collectively
the "ESCROW SHARES"), in escrow as hereinafter provided.

         WHEREAS, the Company and the Initial Stockholders desire that the
Escrow Agent accept the Escrow Shares, in escrow, to be held and disbursed as
hereinafter provided.

         IT IS AGREED:

         1. Appointment of Escrow Agent. The Company and the Initial
Stockholders hereby appoint the Escrow Agent to act in accordance with and
subject to the terms of this Agreement and the Escrow Agent hereby accepts such
appointment and agrees to act in accordance with and subject to such terms.

         2. Deposit of Escrow Shares. On or before the Effective Date, each of
the Initial Stockholders shall deliver to the Escrow Agent certificates
representing his respective Escrow Shares, to be held and disbursed subject to
the terms and conditions of this Agreement. Each Initial Stockholder
acknowledges that the certificate representing his Escrow Shares is legended to
reflect the deposit of such Escrow Shares under this Agreement.

<PAGE>

         3. Disbursement of the Escrow Shares. The Escrow Agent shall hold the
Escrow Shares until the third anniversary of the Effective Date (the "ESCROW
PERIOD"), on which date it shall, upon written instructions from each Initial
Stockholder, disburse each of the Initial Stockholder's Escrow Shares to such
Initial Stockholder; provided, however, that if the Escrow Agent is notified by
the Company pursuant to Section 6.7 hereof that the Company is being liquidated
at any time during the Escrow Period, then the Escrow Agent shall promptly
destroy the certificates representing the Escrow Shares and; provided further,
that if, after the Company consummates a Business Combination (as such term is
defined in the Registration Statement), it (or the surviving entity)
subsequently consummates a liquidation, merger, stock exchange or other similar
transaction which results in all of the stockholders of such entity having the
right to exchange their shares of Common Stock for cash, securities or other
property, then the Escrow Agent will, upon receipt of a certificate, executed by
the Chief Executive Officer or Chief Financial Officer of the Company, in form
reasonably acceptable to the Escrow Agent, that such transaction is then being
consummated, release the Escrow Shares to the Initial Stockholders upon
consummation of the transaction so that they can similarly participate. The
Escrow Agent shall have no further duties hereunder after the disbursement or
destruction of the Escrow Shares in accordance with this Section 3.

         4. Rights of Initial Stockholders in Escrow Shares.

              4.1 Voting Rights as a Stockholder. Subject to the terms of the
Insider Letter described in Section 4.4 hereof and except as herein provided,
the Initial Stockholders shall retain all of their rights as stockholders of the
Company during the Escrow Period, including, without limitation, the right to
vote such shares.

              4.2 Dividends and Other Distributions in Respect of the Escrow
Shares. During the Escrow Period, all dividends payable in cash with respect to
the Escrow Shares shall be paid to the Initial Stockholders, but all dividends
payable in stock or other non-cash property (the "NON-CASH DIVIDENDS") shall be
delivered to the Escrow Agent to hold in accordance with the terms hereof. As
used herein, the term "Escrow Shares" shall be deemed to include the Non-Cash
Dividends distributed thereon, if any.

              4.3 Restrictions on Transfer. During the Escrow Period, no sale,
transfer or other disposition may be made of any or all of the Escrow Shares
except (i) by gift to a member of Initial Stockholder's immediate family or to a
trust, the beneficiary of which is an Initial Stockholder or a member of an
Initial Stockholder's immediate family, (ii) by virtue of the laws of descent
and distribution upon death of any Initial Stockholder, or (iii) pursuant to a
qualified domestic relations order; provided, however, that such permissive
transfers may be implemented only upon the respective transferee's written
agreement to be bound by the terms and conditions of this Agreement and of the
Insider Letter signed by the Initial Stockholder transferring the Escrow Shares.
During the Escrow Period, the Initial Stockholders shall not pledge or grant a
security interest in the Escrow Shares or grant a security interest in their
rights under this Agreement.

              4.4 Insider Letters. Each of the Initial Stockholders has executed
a letter agreement with Maxim and the Company, dated as indicated on Exhibit A
hereto, and which is filed as an exhibit to the Registration Statement (the
"INSIDER LETTER"), respecting the rights and obligations of such Initial
Stockholder in certain events, including but not limited to the liquidation of
the Company.

                                      -2-
<PAGE>

         5. Concerning the Escrow Agent.

              5.1 Good Faith Reliance. The Escrow Agent shall not be liable for
any action taken or omitted by it in good faith and in the exercise of its own
best judgment, and may rely conclusively and shall be protected in acting upon
any order, notice, demand, certificate, opinion or advice of counsel (including
counsel chosen by the Escrow Agent), statement, instrument, report or other
paper or document (not only as to its due execution and the validity and
effectiveness of its provisions, but also as to the truth and acceptability of
any information therein contained) which is believed by the Escrow Agent to be
genuine and to be signed or presented by the proper person or persons. The
Escrow Agent shall not be bound by any notice or demand, or any waiver,
modification, termination or rescission of this Agreement unless evidenced by a
writing delivered to the Escrow Agent signed by the proper party or parties and,
if the duties or rights of the Escrow Agent are affected, unless it shall have
given its prior written consent thereto.

              5.2 Indemnification. The Escrow Agent shall be indemnified and
held harmless by the Company from and against any expenses, including counsel
fees and disbursements, or loss suffered by the Escrow Agent in connection with
any action, suit or other proceeding involving any claim which in any way,
directly or indirectly, arises out of or relates to this Agreement, the services
of the Escrow Agent hereunder, or the Escrow Shares held by it hereunder, other
than expenses or losses arising from the gross negligence or willful misconduct
of the Escrow Agent. Promptly after the receipt by the Escrow Agent of notice of
any demand or claim or the commencement of any action, suit or proceeding, the
Escrow Agent shall notify the other parties hereto in writing. In the event of
the receipt of such notice, the Escrow Agent, in its sole discretion, may
commence an action in the nature of interpleader in an appropriate court to
determine ownership or disposition of the Escrow Shares or it may deposit the
Escrow Shares with the clerk of any appropriate court or it may retain the
Escrow Shares pending receipt of a final, non-appealable order of a court having
jurisdiction over all of the parties hereto directing to whom and under what
circumstances the Escrow Shares are to be disbursed and delivered. The
provisions of this Section 5.2 shall survive in the event the Escrow Agent
resigns or is discharged pursuant to Sections 5.5 or 5.6 below.

              5.3 Compensation. The Escrow Agent shall be entitled to reasonable
compensation from the Company for all services rendered by it hereunder. The
Escrow Agent shall also be entitled to reimbursement from the Company for all
expenses paid or incurred by it in the administration of its duties hereunder
including, but not limited to, all counsel, advisors' and agents' fees and
disbursements and all taxes or other governmental charges.

              5.4 Further Assurances. From time to time on and after the date
hereof, the Company and the Initial Stockholders shall deliver or cause to be
delivered to the Escrow Agent such further documents and instruments and shall
do or cause to be done such further acts as the Escrow Agent shall reasonably
request to carry out more effectively the provisions and purposes of this
Agreement, to evidence compliance herewith or to assure itself that it is
protected in acting hereunder.

                                      -3-
<PAGE>

              5.5 Resignation. The Escrow Agent may resign at any time and be
discharged from its duties as escrow agent hereunder by its giving the other
parties hereto written notice and such resignation shall become effective as
hereinafter provided. Such resignation shall become effective at such time that
the Escrow Agent shall turn over to a successor escrow agent appointed by the
Company, the Escrow Shares held hereunder. If no new escrow agent is so
appointed within the 60 day period following the giving of such notice of
resignation, the Escrow Agent may deposit the Escrow Shares with any court it
reasonably deems appropriate.

              5.6 Discharge of Escrow Agent. The Escrow Agent shall resign and
be discharged from its duties as escrow agent hereunder if so requested in
writing at any time by the Company and a majority of the Initial Stockholders,
jointly, provided, however, that such resignation shall become effective only
upon acceptance of appointment by a successor escrow agent as provided in
Section 5.5.

              5.7 Liability. Notwithstanding anything herein to the contrary,
the Escrow Agent shall not be relieved from liability hereunder for its own
gross negligence or its own willful misconduct.

         6. Miscellaneous.

              6.1 Governing Law. This Agreement shall for all purposes be deemed
to be made under and shall be construed in accordance with the laws of the State
of New York, without regard to the conflicts of laws principles thereof.

              6.2 Third Party Beneficiaries. Each of the Initial Stockholders,
the Company, and Escrow Agent hereby specifically acknowledge and agree that the
Underwriters are third party beneficiaries of this Agreement and this Agreement
may not be modified or changed without the prior written consent of Maxim.

              6.3 Entire Agreement. This Agreement contains the entire agreement
of the parties hereto with respect to the subject matter hereof and, except as
expressly provided herein, may not be changed or modified except by an
instrument in writing signed by the party to be charged.

              6.4 Headings. The headings contained in this Agreement are for
reference purposes only and shall not affect in any way the meaning or
interpretation thereof.

              6.5 Binding Effect. This Agreement shall be binding upon and inure
to the benefit of the respective parties hereto and their legal representatives,
successors and assigns.

              6.6 Notices. Any notice or other communication required or which
may be given hereunder shall be sufficiently given when so delivered if by hand
or overnight delivery or if sent by certified mail or private courier service
within five days after deposit of such notice, postage prepaid, or sent by
facsimile transmission (with confirmation of receipt), addressed as follows:

                                      -4-
<PAGE>

     If to the Company, to:

              Healthcare Acquisition Corp.
              2116 Financial Center
              666 Walnut Street
              Des Moines, Iowa 50309
              Attn:  Matthew P. Kinley

     If to a Stockholder, to his address set forth in Exhibit A.

     and if to the Escrow Agent, to:

              Continental Stock Transfer & Trust Company
              17 Battery Place
              New York, New York 10004
              Attn: Chairman

     A copy of any notice sent hereunder shall be sent to:

              Ellenoff Grossman & Schole LLP
              370 Lexington Avenue
              New York, New York 10017
              Attn: Stuart Neuhauser, Esq.

     and:

              Maxim Group LLC
              405 Lexington Avenue
              New York, New York 10174
              Attn: Clifford Teller, Managing Director

     and:

              Lowenstein Sandler PC
              65 Livingston Avenue
              Roseland, New Jersey 07068
              Attn: Steven Skolnick, Esq.

              The parties may change the persons and addresses to which the
notices or other communications are to be sent by giving written notice to any
such change in the manner provided herein for giving notice.

              6.7 Liquidation of Company. The Company shall give the Escrow
Agent written notification of the liquidation and dissolution of the Company in
the event that the Company fails to consummate a Business Combination within the
time period(s) specified in the Prospectus.

                                      -5-
<PAGE>

              6.8 Counterparts. This Agreement may be executed in several
counterparts, each one of which shall constitute an original and may be
delivered by facsimile transmission, and together shall constitute one
instrument.

         WITNESS the execution of this Agreement as of the date first above
written.

                                                 HEALTHCARE ACQUISITION CORP.

                                                    By:
                                                        ------------------------
                                                        Name: Matthew P. Kinley
                                                        Title: President

                                                        INITIAL STOCKHOLDERS

                                                    ----------------------------
                                                    John Pappajohn

                                                    ----------------------------
                                                    Derace L. Shaffer, M.D.

                                                    ----------------------------
                                                    Matthew P. Kinley

                                                    ----------------------------
                                                    Edward B. Berger

                                                    ----------------------------
                                                    Wayne A. Schellhammer

                                      -6-
<PAGE>

CONTINENTAL STOCK TRANSFER
& TRUST COMPANY

By:
     ------------------------
     Name:
     Title:

                                      -7-
<PAGE>

                                    EXHIBIT A

<TABLE>
<CAPTION>

NAME AND ADDRESS OF                      NUMBER         STOCK                      DATE OF
INITIAL STOCKHOLDER                      OF SHARES      CERTIFICATE NUMBER         INSIDER LETTER
-------------------                      ---------      ------------------         --------------

<S>                                      <C>                                      <C>
John Pappajohn                           784,000                                   5/6/05
c/o Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309

Derace L. Schaffer, M.D.                 784,000                                   5/6/05
c/o Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309

Matthew P. Kinley                        392,000                                   5/6/05
c/o Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309

Edward B. Berger                         20,000                                    6/8/05
c/o Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309

Wayne A. Schellhammer                    20,000                                    6/8/05
c/o Healthcare Acquisition Corp.
2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309
</TABLE>

                                      -8-

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