Document:

EXHIBIT 10.14

As of ___________, 2005

Casimir Capital LP
489 Fifth Avenue
New York, New York 10017

Re:   Platinum Energy Resources, Inc..

Gentlemen:

This letter will confirm the agreement of the undersigned to purchase warrants
("Warrants") of Platinum Energy Resources, Inc.. ("Company") included in the
units ("Units") being sold in the Company's initial public offering ("IPO") upon
the terms and conditions set forth herein. Each Unit is comprised of one share
of Common Stock and one Warrant. The shares of Common Stock and Warrants will
not be separately tradable until 90 days after the effective date of the
Company's IPO unless Casimir Capital LP ("Underwriter") informs the Company of
its decision to allow earlier separate trading.

The undersigned agrees that this letter agreement constitutes an irrevocable
order for Casimir Capital LP to purchase for the undersigned's account within
the forty-trading day period commencing on the date separate trading of the
Warrants commences ("Separation Date") up to 1,666,667 Warrants at market prices
not to exceed $1.20 per Warrant ("Maximum Warrant Purchase"). Casimir (or such
other broker dealer(s) as Casimir may assign the order to) agrees to fill such
order in such amounts and at such times as it may determine, in its sole
discretion, during the forty-trading day period commencing on the Separation
Date. Casimir further agrees that it will not charge the undersigned any fees
and/or commissions with respect to such purchase obligation.

The undersigned may notify Casimir that all or part of the Maximum Warrant
Purchase will be made by an affiliate of the undersigned (or another person or
entity introduced to Casimir by the undersigned (a "Designee")) who (or which)
has an account at Casimir and, in such event, Casimir will make such purchase on
behalf of said affiliate or Designee; provided, however, that the undersigned
hereby agrees to make payment of the purchase price of such purchase in the
event that the affiliate or Designee fails to make such payment.

The undersigned agrees that neither the undersigned nor any affiliate or
Designee of the undersigned shall sell or transfer the Warrants until the
earlier of the consummation of a merger, capital stock exchange, asset
acquisition or other similar business combination and acknowledges that, at the
option of Casimir, the certificates for such Warrants shall contain a legend
indicating such restriction on transferability.

                                                 Very truly yours,

                                                 -------------------------------
                                                 [Name]Unassociated Document

WARRANT
AGREEMENT

Agreement
made as of ___________, 2005 between HEALTHCARE ACQUISITION CORP., a Delaware
corporation, with offices at 2116 Financial Center, 666 Walnut Street, Des
Moines, Iowa 50309 (the "Company"), and
CONTINENTAL STOCK TRANSFER & TRUST COMPANY, a New York corporation, with
offices at 17 Battery Place, New York, New York 10004 (the "Warrant
Agent").

 WHEREAS, the
Company is engaged in a public offering (a "Public
Offering") of
Units (the "Units") and,
in connection therewith, has determined to issue and deliver up to (i) 6,900,000
Warrants (the "Public
Warrants") to
the public investors, and (ii) 300,000 Warrants to Maxim Group LLC.
("Maxim") or its
designees (the "Representative's
Warrants" and,
together with the Public Warrants, the "Warrants"), each
of such Public Warrants evidencing the right of the holder thereof to purchase
one share of common stock, par value $.0001 per share, of the Company's Common
Stock (the "Common
Stock") for
$6.00, subject to adjustment as described herein; and

 WHEREAS, the
Company has filed with the Securities and Exchange Commission a Registration
Statement, No. 333-124712 on Form S-1 (as the same may be amended from time to
time, the "Registration
Statement") for
the registration, under the Securities Act of 1933, as amended (the
"Act") of,
among other securities, the Warrants and the Common Stock issuable upon exercise
of the Warrants; and

 WHEREAS, the
Company desires the Warrant Agent to act on behalf of the Company, and the
Warrant Agent is willing to so act, in connection with the issuance,
registration, transfer, exchange, redemption and exercise of the Warrants;
and

 WHEREAS, the
Company desires to provide for the form and provisions of the Warrants, the
terms upon which they shall be issued and exercised, and the respective rights,
limitation of rights, and immunities of the Company, the Warrant Agent, and the
holders of the Warrants; and

 WHEREAS, all
acts and things have been done and performed which are necessary to make the
Warrants, when executed on behalf of the Company and countersigned by or on
behalf of the Warrant Agent, as provided herein, the valid, binding and legal
obligations of the Company, and to authorize the execution and delivery of this
Agreement.

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

 

1.
 Appointment
of Warrant Agent. The
Company hereby appoints the Warrant Agent to act as agent for the Company for
the Warrants, and the Warrant Agent hereby accepts such appointment and agrees
to perform the same in accordance with the terms and conditions set forth in
this Agreement.

2. Warrants.

 

  2.1.
 Form
of Warrant. Each
Warrant shall be issued in registered form only, shall be in substantially the
form of Exhibit
A hereto,
the provisions of which are incorporated herein and shall be signed by, or bear
the facsimile signature of, the Chief Executive Officer or President and
Treasurer, Secretary or Assistant Secretary of the Company and shall bear a
facsimile of the Company's seal. In the event the person whose facsimile
signature has been placed upon any Warrant shall have ceased to serve in the
capacity in which such person signed the Warrant before such Warrant is issued,
it may be issued with the same effect as if he or she had not ceased to be such
at the date of issuance.

   2.2.
 Effect
of Countersignature. Unless
and until countersigned by the Warrant Agent pursuant to this Agreement, a
Warrant shall be invalid and of no effect and may not be exercised by the holder
thereof.

    2.3.
 Registration.

   2.3.1.
 Warrant
Register. The
Warrant Agent shall maintain books (the "Warrant
Register"), for
the registration of original issuance and the registration of transfer of the
Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall
issue and register the Warrants in the names of the respective holders thereof
in such denominations and otherwise in accordance with instructions delivered to
the Warrant Agent by the Company.

   2.3.2.
 Registered
Holder. Prior
to due presentment for registration of transfer of any Warrant, the Company and
the Warrant Agent may deem and treat the person in whose name such Warrant shall
be registered upon the Warrant Register (the "registered
holder"), as
the absolute owner of such Warrant and of each Warrant represented thereby
(notwithstanding any notation of ownership or other writing on the Warrant
Certificate made by anyone other than the Company or the Warrant Agent), for the
purpose of any exercise thereof, and for all other purposes, and neither the
Company nor the Warrant Agent shall be affected by any notice to the
contrary.

   2.4.
 Detachability
of Warrants. The
securities comprising the Units will not be separately transferable until 90
days after the date hereof unless Maxim informs the Company of its decision to
allow earlier separate trading, but in no event will Maxim allow separate
trading of the securities comprisinf the Units until the Company files a Current
Report on Form 8-K which includes an audited balance sheet reflecting the
receipt by the Company of the gross proceeds of the Public Offering, including
the proceeds received by the Company from the exercise of the Underwriter’s
over-allotment option, if the over-allotment option is exercised prior to the
filing of the Form 8-K.

   2.5
 Warrants
and Representative's Warrants. The
Representative's Warrants shall have the same terms and be in the same form as
the Public Warrants, except with respect to the Warrant Price as set forth below
in Section 3.1.

-2-

3.
Terms
and Exercise of Warrants.

    3.1.
 Warrant
Price. Each
Warrant shall, when countersigned by the Warrant Agent, entitle the registered
holder thereof, subject to the provisions of such Warrant and of this Warrant
Agreement, to purchase from the Company the number of shares of Common Stock
stated therein, at the price of $6.00 per whole share, subject to the
adjustments provided in Section 4 hereof and in the last sentence of this
Section 3.1. The term "Warrant Price" as used in this Warrant Agreement refers
to the price per share at which Common Stock may be purchased at the time a
Warrant is exercised. The Company in its sole discretion may lower the Warrant
Price at any time prior to the Expiration Date.

   3.2.
 Duration
of Warrants. A
Warrant may be exercised only during the period (the "Exercise
Period")
commencing on the later of (i) the consummation by the Company of a merger,
capital stock exchange, asset acquisition or other similar business combination
(a "Business
Combination") (as
described more fully in the Company's Registration Statement) and (ii)
_________, 2006, and terminating at 5:00 p.m., New York City time on the earlier
to occur of (i) ____________, 2009 or (ii) the date fixed for redemption of the
Warrants as provided in Section 6 of this Agreement (the "Expiration
Date").
Except with respect to the right to receive the Redemption Price (as set forth
in Section 6 hereunder), each Warrant not exercised on or before the Expiration
Date shall become void, and all rights thereunder and all rights in respect
thereof under this Agreement shall cease at the close of business on the
Expiration Date. The Company in its sole discretion may extend the duration of
the Warrants by

delaying
the Expiration Date.

   3.3.
 Exercise
of Warrants.

   3.3.1.
 Payment. Subject
to the provisions of the Warrant and this Warrant Agreement, a Warrant, when
countersigned by the Warrant Agent, may be exercised by the registered holder
thereof by surrendering it, at the office of the Warrant Agent, or at the office
of its successor as Warrant Agent, in the Borough of Manhattan, City and State
of New York, with the subscription form, as set forth in the Warrant, duly
executed, and by paying in full, in lawful money of the United States, in cash,
good certified check or good bank draft payable to the order of the Company (or
as otherwise agreed to by the Company), the Warrant Price for each full share of
Common Stock as to which the Warrant is exercised and any and all applicable
taxes due in connection with the exercise of the Warrant, the exchange of the
Warrant for the Common Stock, and the issuance of the Common Stock.

3.3.2.
 Issuance
of Certificates. As soon
as practicable after the exercise of any Warrant and the clearance of the funds
in payment of the Warrant Price, the Company shall issue to the registered
holder of such Warrant a certificate or certificates for the number of full
shares of Common Stock to which he is entitled, registered in such name or names
as may be directed by him, her or it, and if such Warrant shall not have been
exercised in full, a new countersigned Warrant for the number of shares as to
which such Warrant shall not have been exercised. Notwithstanding the foregoing,
the Company shall not be obligated to deliver any securities pursuant to the
exercise of a Warrant unless a registration statement under the Act with respect
to the Common Stock is effective. Warrants may not be exercised by, or
securities issued to, any registered holder in any state in which such exercise
would be unlawful.

-3-

3.3.3.
 Valid
Issuance. All
shares of Common Stock issued upon the proper exercise of a Warrant in
conformity with this Agreement shall be validly issued, fully paid and
nonassessable.

3.3.4.
 Date
of Issuance. Each
person in whose name any such certificate for shares of Common Stock is issued
shall for all purposes be deemed to have become the holder of record of such
shares on the date on which the Warrant was surrendered and payment of the
Warrant Price was made, irrespective of the date of delivery of such
certificate, except that, if the date of such surrender and payment is a date
when the stock transfer books of the Company are closed, such person shall be
deemed to have become the holder of such shares at the close of business on the
next succeeding date on which the stock transfer books are open.

3.3.5.
 Warrant
Solicitation and Warrant Solicitation Fee.

a.
 The
Company has engaged Maxim, on a non-exclusive basis, as its agent for the
solicitation of the exercise of the Warrants. The Company, at its cost, will (i)
assist Maxim with respect to such solicitation, if requested by Maxim, and (ii)
provide Maxim, and direct the Company's transfer agent and the Warrant Agent to
deliver to Maxim, lists of the record and, to the extent known, beneficial
owners of the Company's Warrants. The Company hereby instructs the Warrant Agent
to cooperate with Maxim in every respect in connection with Maxim's solicitation
activities, including, but not limited to, providing to Maxim, at the Company's
cost, a list of record and beneficial holders of the Warrants and circulating a
prospectus or offering circular disclosing the compensation arrangements
referenced in Section 3.3.5(b) below to holders of the Warrants at the time of
exercise of the Warrants. In addition to the conditions set forth in Section
3.3.5(b), Maxim shall accept payment of the warrant solicitation fee provided in
Section 3.3.5(b) only if it has provided bona fide services to the Company in
connection with the exercise of the Warrants and only to the extent that an
investor who exercises his Warrants specifically designates, in writing, that
Maxim solicited his exercise. In addition to soliciting, either orally or in
writing, the exercise of Warrants by a Warrant holder, such services may also
include disseminating information, either orally or in writing, to Warrant
holders about the Company or the market for the Company's securities, or
assisting in the processing of the exercise of Warrants.

b.
 In each
instance in which a Warrant is exercised, the Warrant Agent shall promptly give
written notice of such exercise to the Company and Maxim (the "Warrant
Agent's Exercise Notice"). If,
upon the exercise of any Warrant more than one year from the effective date of
the Registration Statement, (i) the market price of the Company's Common Stock
is greater than the Warrant Price, (ii) disclosure of compensation arrangements
between the Company and Maxim with respect to the solicitation of the exercise
of the Warrants was made both at the time of the Public Offering and at the time
of exercise (by delivery of the Prospectus or as otherwise required by
applicable law, rule or regulation), (iii) the holder of the Warrant confirms in
writing that the exercise of the Warrant was solicited by Maxim, (iv) the
Warrant was not held in a discretionary account, and (v) the solicitation of the
exercise of the Warrant was not in violation of Regulation M (as such rule or
any successor rule may be in effect as of such time of exercise) promulgated
under the Securities Exchange Act of 1934, as amended, then the Warrant Agent,
simultaneously with the distribution of the Common Stock underlying the Warrants
so exercised in accordance with the instructions from the Company following
receipt of the proceeds to the Company received upon exercise of such
Warrant(s), shall, on behalf of the Company, pay to Maxim a fee of 4% of the
cash proceeds received upon exercise of the Warrants, and 4% of the value of the
Common Stock (based on the Fair Market Value of the Common Stock) received by
the holder upon the cashless exercise of the Warrants pursuant to Section 3.3.1,
to Maxim, provided that Maxim delivers to the Warrant Agent within ten (10)
business days from the date on which Maxim has received the Warrant Agent's
Exercise Notice, a certificate that the conditions set forth in the preceding
clauses (iii), (iv) and (v) have been satisfied. Notwithstanding the foregoing,
no fee will be paid to Maxim with respect to the exercise by the Underwriters or
their affiliates or the Company's officers or directors of Warrants purchased by
it or them and still held by them for its or their own account. Maxim and the
Company may at any time during business hours, examine the records of the
Warrant Agent, including its ledger of original Warrant certificates returned to
the Warrant Agent upon exercise of Warrants.

-4-

c.
 The
provisions of this Section 3.3.5. may not be modified, amended or deleted
without the prior written consent of Maxim.

4. Adjustments.

4.1.
 Stock
Dividends - Split-Ups. If
after the date hereof, and subject to the provisions of Section 4.6 below, the
number of outstanding shares of Common Stock is increased by a stock dividend
payable in shares of Common Stock, or by a split-up of shares of Common Stock,
or other similar event, then, on the effective date of such stock dividend,
split-up or similar event, the number of shares of Common Stock issuable on
exercise of each Warrant shall be increased in proportion to such increase in
outstanding shares of Common Stock.

   4.2.
 Aggregation
of Shares. If
after the date hereof, and subject to the provisions of Section 4.6, the number
of outstanding shares of Common Stock is decreased by a consolidation,
combination, reverse stock split or reclassification of shares of Common Stock
or other similar event, then, on the effective date of such consolidation,
combination, reverse stock split, reclassification or similar event, the number
of shares of Common Stock issuable on exercise of each Warrant shall be
decreased in proportion to such decrease in outstanding shares of Common
Stock.

   4.3
 Adjustments
in Exercise Price.
Whenever the number of shares of Common Stock purchasable upon the exercise of
the Warrants is adjusted, as provided in Section 4.1 and 4.2 above, the Warrant
Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price
immediately prior to such adjustment by a fraction (x) the numerator of which
shall be the number of shares of Common Stock purchasable upon the exercise of
the Warrants immediately prior to such adjustment, and (y) the denominator of
which shall be the number of shares of Common Stock so purchasable immediately
thereafter.

    4.4.
 Replacement
of Securities upon Reorganization, etc. In case
of any reclassification or reorganization of the outstanding shares of Common
Stock (other than a change covered by Section 4.1 or 4.2 hereof or that solely
affects the par value of such shares of Common Stock), or in the case of any
merger or consolidation of the Company with or into another corporation (other
than a consolidation or merger in which the Company is the continuing
corporation and that does not result in any reclassification or reorganization
of the outstanding shares of Common Stock), or in the case of any sale or
conveyance to another corporation or entity of the assets or other property of
the Company as an entirety or substantially as an entirety in connection with
which the Company is dissolved, the Warrant holders shall thereafter have the
right to purchase and receive, upon the basis and upon the terms and conditions
specified in the Warrants and in lieu of the shares of Common Stock of the
Company immediately theretofore purchasable and receivable upon the exercise of
the rights represented thereby, the kind and amount of shares of stock or other
securities or property (including cash) receivable upon such reclassification,
reorganization, merger or consolidation, or upon a dissolution following any
such sale or transfer, that the Warrant holder would have received if such
Warrant holder had exercised his, her or its Warrant(s) immediately prior to
such event; and if any reclassification also results in a change in shares of
Common Stock covered by Section 4.1 or 4.2, then such adjustment shall be made
pursuant to Sections 4.1, 4.2, 4.3 and this Section 4.4. The provisions of this
Section 4.4 shall similarly apply to successive reclassifications,
reorganizations, mergers or consolidations, sales or other
transfers.

-5-

4.5.
 Notices
of Changes in Warrant. Upon
every adjustment of the Warrant Price or the number of shares issuable upon
exercise of a Warrant, the Company shall give written notice thereof to the
Warrant Agent, which notice shall state the Warrant Price resulting from such
adjustment and the increase or decrease, if any, in the number of shares
purchasable at such price upon the exercise of a Warrant, setting forth in
reasonable detail the method of calculation and the facts upon which such
calculation is based. Upon the occurrence of any event specified in Sections
4.1, 4.2, 4.3 or 4.4, then, in any such event, the Company shall give written
notice to the Warrant holder, at the last address set forth for such holder in
the warrant register, of the record date or the effective date of the event.
Failure to give such notice, or any defect therein, shall not affect the
legality or validity of such event.

   4.6.
 No
Fractional Shares.
Notwithstanding any provision contained in this Warrant Agreement to the
contrary, the Company shall not issue fractional shares upon exercise of
Warrants. If, by reason of any adjustment made pursuant to this Section 4, the
holder of any Warrant would be entitled, upon the exercise of such Warrant, to
receive a fractional interest in a share, the Company shall, upon such exercise,
round up to the nearest whole number the number of the shares of Common Stock to
be issued to the Warrant holder.

   4.7.
 Form
of Warrant. The
form of Warrant need not be changed because of any adjustment pursuant to this
Section 4, and Warrants issued after such adjustment may state the same Warrant
Price and the same number of shares as is stated in the Warrants initially
issued pursuant to this Agreement. However, the Company may at any time in its
sole discretion make any change in the form of Warrant that the Company may deem
appropriate and that does not affect the substance thereof, and any Warrant
thereafter issued or countersigned, whether in exchange or substitution for an
outstanding Warrant or otherwise, may be in the form as so changed.

-6-

5.
 Transfer
and Exchange of Warrants.

 

5.1.
 Registration
of Transfer. The
Warrant Agent shall register the transfer, from time to time, of any outstanding
Warrant upon the Warrant Register, upon surrender of such Warrant for transfer,
properly endorsed with signatures properly guaranteed and accompanied by
appropriate instructions for transfer. Upon any such transfer, a new Warrant
representing an equal aggregate number of Warrants shall be issued and the old
Warrant shall be cancelled by the Warrant Agent. The Warrants so cancelled shall
be delivered by the Warrant Agent to the Company from time to time upon
request.

   5.2.
 Procedure
for Surrender of Warrants.
Warrants may be surrendered to the Warrant Agent, together with a written
request for exchange or transfer, and thereupon the Warrant Agent shall issue in
exchange therefor one or more new Warrants as requested by the registered holder
of the Warrants so surrendered, representing an equal aggregate number of
Warrants; provided, however, that in the event that a Warrant surrendered for
transfer bears a restrictive legend, the Warrant Agent shall not cancel such
Warrant and issue new Warrants in exchange therefor until the Warrant Agent has
received an opinion of counsel for the Company stating that such transfer may be
made and indicating whether the new Warrants must also bear a restrictive
legend.

   5.3.
 Fractional
Warrants. The
Warrant Agent shall not be required to effect any registration of transfer or
exchange which will result in the issuance of a warrant certificate for a
fraction of a warrant.

   5.4.
 Service
Charges. No
service charge shall be made for any exchange or registration of transfer of
Warrants.

5.5.
 Warrant
Execution and Countersignature. The
Warrant Agent is hereby authorized to countersign and to deliver, in accordance
with the terms of this Agreement, the Warrants required to be issued pursuant to
the provisions of this Section 5, and the Company, whenever required by the
Warrant Agent, will supply the Warrant Agent with Warrants duly executed on
behalf of the Company for such purpose.

6.
 Redemption.

6.1.
 Redemption. Subject
to Section 6.4 hereof, not less than all of the outstanding Warrants may be
redeemed, at the option of the Company, at any time after they become
exercisable and prior to their expiration, at the office of the Warrant Agent,
upon the notice referred to in Section 6.2., at the price of $.01 per Warrant
(the "Redemption
Price"),
provided that the last sales price of the Common Stock has been at least $11.50
per share, on each of twenty (20) trading days within any thirty (30) trading
day period ending on the third business day prior to the date on which notice of
redemption is given The provisions of this Section 6.1 may not be modified,
amended or deleted without the prior written consent of Maxim.

-7-

6.2.
 Date
Fixed for, and Notice of, Redemption. In the
event the Company shall elect to redeem all of the Warrants, the Company shall
fix a date for the redemption. Notice of redemption shall be mailed by first
class mail, postage prepaid, by the Company not less than 30 days prior to the
date fixed for redemption to the registered holders of the Warrants to be
redeemed at their last addresses as they shall appear on the registration books.
Any notice mailed in the manner herein provided shall be conclusively presumed
to have been duly given whether or not the registered holder received such
notice.

6.3.
 Exercise
After Notice of Redemption. The
Warrants may be exercised, for cash in accordance with Section 3 of this
Agreement at any time after notice of redemption shall have been given by the
Company pursuant to Section 6.2. hereof and prior to the time and date fixed for
redemption. On and after the redemption date, the record holder of the Warrants
shall have no further rights except to receive, upon surrender of
the

Warrants,
the Redemption Price.

   6.4
 Outstanding
Warrants Only. The
Company understands that the redemption rights provided for by this Section 6
apply only to outstanding Warrants. To the extent a person holds rights to
purchase Warrants, such purchase rights shall not be extinguished by redemption.
However, once such purchase rights are exercised, the Company may redeem the
Warrants issued upon such exercise provided that the criteria for redemption is
met. The provisions of this Section 6.4 may not be modified, amended or deleted
without the prior written consent of Maxim.

7.
 Other
Provisions Relating to Rights of Holders of Warrants.

   7.1.
 No
Rights as Stockholder. A
Warrant does not entitle the registered holder thereof to any of the rights of a
stockholder of the Company, including, without limitation, the right to receive
dividends, or other distributions, exercise any preemptive rights to vote or to
consent or to receive notice as stockholders in respect of the meetings of
stockholders or the election of directors of the Company or any other
matter.

   7.2.
 Lost,
Stolen, Mutilated, or Destroyed Warrants. If any
Warrant is lost, stolen, mutilated, or destroyed, the Company and the Warrant
Agent may on such terms as to indemnity or otherwise as they may in their
discretion impose (which shall, in the case of a mutilated Warrant, include the
surrender thereof), issue a new Warrant of like denomination, tenor, and date as
the Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall
constitute a substitute contractual obligation of the Company, whether or not
the allegedly lost, stolen, mutilated, or destroyed Warrant shall be at any time
enforceable by anyone.

   7.3.
 Reservation
of Common Stock. The
Company shall at all times reserve and keep available a number of its authorized
but unissued shares of Common Stock that will be sufficient to permit the
exercise in full of all outstanding Warrants issued pursuant to this
Agreement.

-8-

   7.4.
 Registration
of Common Stock. The
Company agrees that prior to the commencement of the Exercise Period, it shall
file with the Securities and Exchange Commission a post-effective amendment to
the Registration Statement, or a new registration statement, for the
registration, under the Act, of, and it shall take such action as is necessary
to qualify for sale, in those states in which the Warrants were initially
offered by the Company, the Common Stock issuable upon exercise of the Warrants.
In either case, the Company will use its best efforts to cause the same to
become effective and to maintain the effectiveness of such registration
statement until the expiration of the Warrants in accordance with the provisions
of this Agreement. The provisions of this Section 7.4 may not be modified,
amended or deleted without the prior written consent of Maxim.

8. Concerning
the Warrant Agent and Other Matters.

   8.1.
 Payment
of Taxes. The
Company will from time to time promptly pay all taxes and charges that may be
imposed upon the Company or the Warrant Agent in respect of the issuance or
delivery of shares of Common Stock upon the exercise of Warrants, but the
Company shall not be obligated to pay any transfer taxes in respect of the
Warrants or such shares.

   8.2.
 Resignation,
Consolidation, or Merger of Warrant Agent.

   8.2.1.
Appointment
of Successor Warrant Agent. The
Warrant Agent, or any successor to it hereafter appointed, may resign its duties
and be discharged from all further duties and liabilities hereunder after giving
sixty (60) days' notice in writing to the Company. If the office of the Warrant
Agent becomes vacant by resignation or incapacity to act or otherwise, the
Company shall appoint in writing a successor Warrant Agent in place of the
Warrant Agent. If the Company shall fail to make such appointment within a
period of 30 days after it has been notified in writing of such resignation or
incapacity by the Warrant Agent or by the holder of the Warrant (who shall, with
such notice, submit his Warrant for inspection by the Company), then the holder
of any Warrant may apply to the Supreme Court of the State of New York for the
County of New York for the appointment of a successor Warrant Agent at the
Company's cost. Any successor Warrant Agent, whether appointed by the Company or
by such court, shall be a corporation organized and existing under the laws of
the State of New York, in good standing and having its principal office in the
Borough of Manhattan, City and State of New York, and authorized under such laws
to exercise corporate trust powers and subject to supervision or examination by
federal or state authority. After appointment, any successor Warrant Agent shall
be vested with all the authority, powers, rights, immunities, duties, and
obligations of its predecessor Warrant Agent with like effect as if originally
named as Warrant Agent hereunder, without any further act or deed; but if for
any reason it becomes necessary or appropriate, the predecessor Warrant Agent
shall execute and deliver, at the expense of the Company, an instrument
transferring to such successor Warrant Agent all the authority, powers, and
rights of such predecessor Warrant Agent hereunder; and upon request of any
successor Warrant Agent the Company shall make, execute, acknowledge, and
deliver any and all instruments in writing for more fully and effectually
vesting in and confirming to such successor Warrant Agent all such authority,
powers, rights, immunities, duties, and obligations.

   8.2.2.  Notice
of Successor Warrant Agent. In the
event a successor Warrant Agent shall be appointed, the Company shall give
notice thereof to the predecessor Warrant Agent and the transfer agent for the
Common Stock not later than the effective date of any such
appointment.

 

-9-

   8.2.3.
 Merger
or Consolidation of Warrant Agent. Any
corporation into which the Warrant Agent may be merged or with which it may be
consolidated or any corporation resulting from any merger or consolidation to
which the Warrant Agent shall be a party shall be the successor Warrant Agent
under this Agreement without any further act.

 

   8.3.
 Fees
and Expenses of Warrant Agent.

   8.3.1.
 Remuneration. The
Company agrees to pay the Warrant Agent reasonable remuneration for its services
as such Warrant Agent hereunder and will reimburse the Warrant Agent upon demand
for all expenditures that the Warrant Agent may reasonably incur in the
execution of its duties hereunder.

   8.3.2.
 Further
Assurances. The
Company agrees to perform, execute, acknowledge, and deliver or cause to be
performed, executed, acknowledged, and delivered all such further and other
acts, instruments, and assurances as may reasonably be required by the Warrant
Agent for the carrying out or performing of the provisions of this
Agreement.

   8.4.
 Liability
of Warrant Agent.

   8.4.1.
 Reliance
on Company Statement.
Whenever in the performance of its duties under this Warrant Agreement, the
Warrant Agent shall deem it necessary or desirable that any fact or matter be
proved or established by the Company prior to taking or suffering any action
hereunder, such fact or matter (unless other evidence in respect thereof be
herein specifically prescribed) may be deemed to be conclusively proved and
established by a statement signed by the President or Chairman of the Board of
the Company and delivered to the Warrant Agent. The Warrant Agent may rely upon
such statement for any action taken or suffered in good faith by it pursuant to
the provisions of this Agreement.

   8.4.2.
 Indemnity. The
Warrant Agent shall be liable hereunder only for its own negligence, willful
misconduct or bad faith. The Company agrees to indemnify the Warrant Agent and
save it harmless against any and all liabilities, including judgments, costs and
reasonable counsel fees, for anything done or omitted by the Warrant Agent in
the execution of this Agreement except as a result of the Warrant Agent's
negligence, willful misconduct, or bad

faith.

   8.4.3.
 Exclusions. The
Warrant Agent shall have no responsibility with respect to the validity of this
Agreement or with respect to the validity or execution of any Warrant (except
its countersignature thereof); nor shall it be responsible for any breach by the
Company of any covenant or condition contained in this Agreement or in any
Warrant; nor shall it be responsible to make any adjustments required under the
provisions of Section 4 hereof or responsible for the manner, method, or amount
of any such adjustment or the ascertaining of the existence of facts that would
require any such adjustment; nor shall it by any act hereunder be deemed to make
any representation or warranty as to the authorization or reservation of any
shares of Common Stock to be issued pursuant to this Agreement or any Warrant or
as to whether any shares of Common Stock will when issued be valid and fully
paid and nonassessable.

-10-

8.5.
 Acceptance
of Agency. The
Warrant Agent hereby accepts the agency established by this Agreement and agrees
to perform the same upon the terms and conditions herein set forth and among
other things, shall account promptly to the Company with respect to Warrants
exercised and concurrently account for, and pay to the Company, all moneys
received by the Warrant Agent for the purchase of shares of the Company's Common
Stock through the exercise of Warrants.

9.
 Miscellaneous
Provisions.

   9.1.
 Successors. All the
covenants and provisions of this Agreement by or for the benefit of the Company
or the Warrant Agent shall bind and inure to the benefit of their respective
successors and assigns.

   9.2.
 Notices. Any
notice, statement or demand authorized by this Warrant Agreement to be given or
made by the Warrant Agent or by the holder of any Warrant to or on the Company
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 (until another address is filed in writing
by the Company with the Warrant Agent), as follows:

Healthcare
Acquisition Corp.

2116
Financial Center

666
Walnut Street

Des
Moines, Iowa 50309

Attn:

Any
notice, statement or demand authorized by this Agreement to be given or made by
the holder of any Warrant or by the Company to or on the Warrant Agent 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 (until another address is filed in writing by
the Warrant Agent with the
Company), as follows:

Continental
Stock Transfer & Trust Company

17
Battery Place

New York,
New York 10004

Attn:
Compliance Department

with a
copy in each case to:

Ellenoff
Grossman & Schole LLP

370
Lexington Avenue

New York,
New York 10017

Attn:
Stuart Neuhauser, Esq.

-11-

and

Lowenstein
Sandler PC

65
Livingston Avenue

Roseland,
New Jersey 07068

Attn:
Steven Skolnick, Esq.

and

Maxim
Group LLC.

405
Lexington Avenue

New York,
New York 10174

Attn:
Clifford Teller, Managing Director

   9.3.
 Applicable
Law. The
validity, interpretation, and performance of this Agreement and of the Warrants
shall be governed in all respects by the laws of the State of New York, without
giving effect to conflict of laws. The Company hereby agrees that any action,
proceeding or claim against it arising out of or relating in any way to this
Agreement shall be brought and enforced in the courts of the State of New York
located in New York County or the United States District Court for the Southern
District of New York, and irrevocably submits to such jurisdiction, which
jurisdiction shall be exclusive. The Company hereby waives any objection to such
exclusive jurisdiction and that such courts represent an inconvenience forum.
Any such process or summons to be served upon the Company may be served by
transmitting a copy thereof by registered or certified mail, return receipt
requested, postage prepaid, addressed to it at the address set forth in Section
9.2 hereof. Such mailing shall be deemed personal service and shall be legal and
binding upon the Company in any action, proceeding or claim

   9.4.
 Persons
Having Rights under this Agreement.
 Nothing
in this Agreement expressed and nothing that may be implied from any of the
provisions hereof is intended, or shall be construed, to confer upon, or give
to, any person or entity other than the parties hereto and the registered
holders of the Warrants (who shall, for all purposes hereunder, be deemed third
party beneficiaries of this Agreement) and, for the purposes of Sections 3.3.5,
6.1, 6.4, 7.4 and 9.2 hereof, Maxim, any right, remedy, or claim under or by
reason of this Warrant Agreement or of any covenant, condition, stipulation,
promise, or agreement hereof. Maxim shall be deemed to be a third-party
beneficiary of this Agreement with respect to Sections 3.3.5, 6.1, 6.4, 7.4 and
9.2 hereof. All covenants, conditions, stipulations, promises, and agreements
contained in this Warrant Agreement shall be for the sole and exclusive benefit
of the parties hereto (and Maxim with respect to the Sections 3.3.5, 6.1, 6.4,
7.4 and 9.2 hereof) and their successors and assigns and of the registered
holders of the Warrants.

   9.5.  Examination
of the Warrant Agreement. A copy
of this Agreement shall be available at all reasonable times at the office of
the Warrant Agent in the Borough of Manhattan, City and State of New York, for
inspection by the registered holder of any Warrant. The Warrant Agent may
require any such holder to submit his Warrant for inspection by it.

-12-

   9.6.
 Counterparts. This
Agreement may be executed in any number of counterparts and each of such
counterparts shall for all purposes be deemed to be an original, and all such
counterparts shall together constitute but one and the same
instrument.

   9.7.
 Effect
of Headings. The
Section headings herein are for convenience only and are not part of this
Warrant Agreement and shall not affect the interpretation thereof.

 

[Remainder
of Page Intentionally Left Blank]

-13-

IN
WITNESS WHEREOF, this Agreement has been duly executed by the parties hereto as
of the day and year first above written.

 

	 	 	 
	 	HEALTHCARE ACQUISITION
      CORP.
	 
 	 
 	 
 
	 	By:  	 
	 	
      

      Name:
	 	Title 

	 	 	 
	 	
      CONTINENTAL
      STOCK TRANSFER

        
      & TRUST COMPANY

	 
 	 
 	 
 
	 	By:  	 
	 	
      

      Name: Steven Nelson
	 	Title:
Chairman

 

 

-14-

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