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                                                                   EXHIBIT 10.32

                          REGISTRATION RIGHTS AGREEMENT

     REGISTRATION RIGHTS AGREEMENT (this "AGREEMENT"), dated as of December 21,
2001, by and among Cambridge Heart, Inc., a corporation organized under the laws
of the State of Delaware (the "COMPANY"), and the undersigned (together with
their affiliates, the "INITIAL INVESTORS").

     WHEREAS:

     A.   In connection with the Securities Purchase Agreement of even date
herewith by and between the Company and the Initial Investors (the "SECURITIES
PURCHASE AGREEMENT"), the Company has agreed, upon the terms and subject to the
conditions contained therein, to issue and sell to the Initial Investors (i)
shares of the Company's common stock, par value $.001 per share (the "COMMON
STOCK") and (ii) warrants (the "WARRANTS") to acquire shares of Common Stock.

     B.   To induce the Initial Investors to execute and deliver the Securities
Purchase Agreement, the Company has agreed to provide certain registration
rights under the Securities Act of 1933, as amended, and the rules and
regulations thereunder, or any similar successor statute (collectively, the
"SECURITIES ACT"), and applicable state securities laws.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company and the Initial
Investors hereby agree as follows:

     1.   DEFINITIONS.

          (a)  As used in this Agreement, the following terms shall have the
following meanings:

               (i)  "INVESTORS" means the Initial Investors and any transferees
or assignees who agree to become bound by the provisions of this Agreement in
accordance with Section 9 hereof.

               (ii) "REGISTER," "REGISTERED," and "REGISTRATION" refer to a
registration effected by preparing and filing a Registration Statement or
Statements in compliance with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering securities on a
continuous basis ("RULE 415"), and the declaration or ordering of effectiveness
of such Registration Statement by the United States Securities and Exchange
Commission (the "SEC").

               (iii) "REGISTRABLE SECURITIES" means (A) the Common Stock
purchased by the Initial Investors or their assignees at the Closing (as defined
in the Securities Purchase

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Agreement), (B) the Common Stock issuable upon exercise of or otherwise pursuant
to the Warrants, or (C) any shares of capital stock issued or issuable, from
time to time (with any adjustments), as a distribution on or in exchange for or
otherwise with respect to any of the foregoing.

               (iv) "REGISTRATION STATEMENT" means a registration statement of
the Company under the Securities Act.

          (b)  Capitalized terms used herein and not otherwise defined herein
shall have the respective meanings set forth in the Securities Purchase
Agreement.

     2.   REGISTRATION.

          (a)  MANDATORY REGISTRATION. The Company shall prepare promptly and
file with the SEC as soon as practicable, but in no event later than thirty (30)
days from the date hereof (the "FILING DATE") a Registration Statement on Form
S-3 (or, if Form S-3 is not then available, on such form of Registration
Statement as is then available to effect a registration of all of the
Registrable Securities, subject to the consent, not to be unreasonably withheld,
of The Tail Wind Fund, Ltd. ("TAIL WIND FUND")) covering the resale of 2,212,643
Registrable Securities. The Registration Statement filed hereunder, to the
extent allowable under the Securities Act and the rules promulgated thereunder
(including Rule 416), shall state that such Registration Statement also covers
such indeterminate number of additional shares of Common Stock as may become
issuable to prevent dilution resulting from stock splits, stock dividends or
similar transactions. The Registrable Securities included in the Registration
Statement shall be allocated to the Investors as set forth in Section 11(k)
hereof. The Registration Statement (and each amendment or supplement thereto,
and each request for acceleration of effectiveness thereof) shall be provided to
(and subject to the approval, which shall not be unreasonably withheld or
delayed, of) the Tail Wind Fund and its counsel prior to its filing or other
submission.

          (b)  UNDERWRITTEN OFFERING. If any offering pursuant to the
Registration Statement pursuant to Section 2(a) hereof involves an underwritten
offering, the Investors who hold a majority in interest of the Registrable
Securities subject to such underwritten offering, with the consent of the
Initial Investors if they are still holding Registrable Securities, shall have
the right to select one legal counsel to represent the Investors and an
investment banker or bankers and manager or managers to administer the offering,
which investment banker or bankers or manager or managers shall be reasonably
satisfactory to the Company. Notwithstanding the foregoing, if the offering does
not involve an underwritten offer, the Investors shall not be entitled to
require that the offering be underwritten.

          (c)  PAYMENTS BY THE COMPANY. The Company shall use its best efforts
to cause the Registration Statement required to be filed pursuant to Section
2(a) hereof to become effective as soon as practicable, but in no event later
than the ninetieth (90th) day following the Closing Date. At the time of
effectiveness, the Company shall ensure such Registration Statement covers at
least 2,212,643 Registrable Securities. If (i) such Registration Statement

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covering all of the Registrable Securities is not declared effective by the SEC
on or before the one hundred twentieth (120th) day following the Closing Date
(the "REGISTRATION DEADLINE") or (ii) after such Registration Statement has been
declared effective by the SEC, sales of any of the Registrable Securities
required to be covered by such Registration Statement cannot be made pursuant to
such Registration Statement (by reason of a stop order and/or because the
Registration Statement contains misstatements or omissions due to the Company's
failure to update the Registration Statement or because of any other reason
outside the control of the Investors) or (iii) the Common Stock is not listed or
included for quotation on the Nasdaq National Market ("NNM"), the Nasdaq
SmallCap Market ("SMALLCAP"), the New York Stock Exchange (the "NYSE") or the
American Stock Exchange (the "AMEX") at any time after the Registration Deadline
hereunder, then the Company will make payments to the Investors in such amounts
and at such times as shall be determined pursuant to this Section 2(c) as
partial relief for the damages to the Investors by reason of any such delay in
or reduction of their ability to sell the Registrable Securities (which remedy
shall not be exclusive of any other remedies available at law or in equity).
Notwithstanding the foregoing, no payments shall accrue pursuant to this Section
2(c) during any "black-out" period permitted pursuant to Section 4(f). In the
event the Investors fail to provide, within five (5) business days, information
reasonably requested by the Company for inclusion in the Registration Statement
or to provide their approval (or comments to) the Registration Statement (or any
amendment or supplement thereto), there shall be a day-for-day extension of any
period within which the Company is required to act hereunder, and no payments
shall accrue during such extension pursuant to this Section 2(c). The Company
shall pay to each Investor an amount equal to the product of (i) the aggregate
purchase price of the Common Stock purchased by such Investor (the "AGGREGATE
SHARE PRICE"), multiplied by (ii) two hundredths (.02), for each thirty (30) day
period (or portion thereof) (A) after the Registration Deadline and prior to the
date the Registration Statement covering all of the Registrable Securities is
declared effective by the SEC, and (B) during which sales of any Registrable
Securities cannot be made pursuant to any such Registration Statement after the
Registration Statement has been declared effective or the Common Stock is not
listed or included for quotation on the NNM, the SmallCap, the NYSE or the AMEX.
(For example, if the Registration Statement covering all of the Registrable
Securities is not effective by the Registration Deadline, the Company would pay
$20,000 for each thirty (30) day period thereafter with respect to each
$1,000,000 of Aggregate Share Price until the Registration Statement becomes
effective.) Such amounts shall be paid in cash. Payments of cash pursuant hereto
shall be made within five (5) days after the end of each period that gives rise
to such obligation, provided that, if any such period extends for more than
thirty (30) days, interim payments shall be made for each such thirty (30) day
period.

          (d)  INTENTIONALLY OMITTED.

          (e)  ELIGIBILITY FOR FORM S-3. The Company represents and warrants
that it meets the requirements for the use of Form S-3 for registration of the
sale by the Initial Investors and any other Investor of the Registrable
Securities and the Company shall file all reports required to be filed by the
Company with the SEC in a timely manner so as to thereafter maintain such
eligibility for the use of Form S-3.

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          (f)  RULE 416. The Company and the Investors each acknowledge that an
indeterminate number of Registrable Securities shall be registered pursuant to
Rule 416 under the Securities Act so as to include in such Registration
Statement any and all Registrable Securities which may become issuable to
prevent dilution resulting from stock splits, stock dividends or similar
transactions (collectively, the "RULE 416 SECURITIES"). In this regard, the
Company agrees to take all steps necessary to ensure that all Rule 416
Securities are registered pursuant to Rule 416 under the Securities Act in the
Registration Statement and, absent guidance from the SEC or other definitive
authority to the contrary, the Company shall affirmatively support and not take
any action adverse to the position that the Registration Statements filed
hereunder cover all of the Rule 416 Securities. If the Company determines that
the Registration Statement(s) filed hereunder do not cover all of the Rule 416
Securities, the Company shall immediately provide to each Investor written
notice (a "RULE 416 NOTICE") setting forth the basis for the Company's position
and the authority therefor.

     3.   OBLIGATIONS OF THE COMPANY.

          In connection with the registration of the Registrable Securities, the
Company shall have the following obligations:

          (a)  The Company shall prepare and file with the SEC the Registration
Statement required by Section 2(a) as soon as practicable (but in no event later
than the Filing Date), and cause such Registration Statement relating to
Registrable Securities to become effective as soon as practicable after such
filing but in no event later than the Registration Deadline), and keep such
Registration Statement effective pursuant to Rule 415 at all times until such
date as is the earlier of (i) the date on which all of the Registrable
Securities have been sold and (ii) the date on which all of the Registrable
Securities (in the reasonable opinion of counsel to the Initial Investors, which
shall be sought upon the reasonable request of the Company) may be immediately
sold to the public without registration or restriction pursuant to Rule 144(k)
under the Securities Act or any successor provision (the "REGISTRATION PERIOD"),
which Registration Statement (including any amendments or supplements thereto
and prospectuses contained therein and all documents incorporated by reference
therein) shall not contain any untrue statement of a material fact or omit to
state a material fact required to be stated therein, or necessary to make the
statements therein not misleading, and (iii) shall comply in all material
respects with the requirements of the Securities Act and the rules and
regulations of the SEC promulgated thereunder. The financial statements of the
Company included in the Registration Statement or incorporated by reference
therein will comply as to form in all material respects with the applicable
accounting requirements and the published rules and regulations of the SEC
applicable with respect thereto. Such financial statements will be prepared in
accordance with U.S. generally accepted accounting principles, consistently
applied, during the periods involved (except (i) as may be otherwise indicated
in such financial statements or the notes thereto, or (ii) in the case of
unaudited interim statements, to the extent they may not include footnotes or
may be condensed on summary statements and fairly present in all material
respects the consolidated financial position of the Company and its consolidated
subsidiaries as of the dates thereof and the consolidated results of their
operations and cash flows for the periods then ended (subject, in the case of
unaudited statements, to immaterial year-end adjustments).

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          (b)  The Company shall prepare and file with the SEC such amendments
(including post-effective amendments) and supplements to the Registration
Statement and the prospectus used in connection with the Registration Statement
as may be necessary to keep the Registration Statement effective at all times
during the Registration Period, and, during such period, comply with the
provisions of the Securities Act with respect to the disposition of all
Registrable Securities of the Company covered by the Registration Statement
until the earlier of (i) such time as all of such Registrable Securities have
been disposed of in accordance with the intended methods of disposition by the
seller or sellers thereof as set forth in the Registration Statement or (ii) the
expiration of the Registration Period.

          (c)  The Company shall furnish to each Investor whose Registrable
Securities are included in the Registration Statement and its legal counsel (i)
promptly after the same is prepared and publicly distributed, filed with the
SEC, or received by the Company, one copy of the Registration Statement and any
amendment thereto, each preliminary prospectus and prospectus and each amendment
or supplement thereto, and, in the case of the Registration Statement referred
to in Section 2(a), each letter written by or on behalf of the Company to the
SEC or the staff of the SEC (including, without limitation, any request to
accelerate the effectiveness of the Registration Statement or amendment
thereto), and each item of correspondence from the SEC or the staff of the SEC,
in each case relating to the Registration Statement (other than any portion, if
any, thereof which contains information for which the Company has sought
confidential treatment), (ii) on the date of effectiveness of the Registration
Statement or any amendment thereto, a notice stating that the Registration
Statement or amendment has been declared effective, and (iii) such number of
copies of a prospectus, including a preliminary prospectus, and all amendments
and supplements thereto and such other documents as such Investor may reasonably
request in order to facilitate the disposition of the Registrable Securities
owned by such Investor.

          (d)  The Company shall use reasonable commercial efforts to (i)
register and qualify the Registrable Securities covered by the Registration
Statement under such other securities or "blue sky" laws of such jurisdictions
in the United States as each Investor who holds Registrable Securities being
offered reasonably requests, (ii) prepare and file in those jurisdictions such
amendments (including post-effective amendments) and supplements to such
registrations and qualifications as may be necessary to maintain the
effectiveness thereof during the Registration Period, (iii) take such other
actions as may be necessary to maintain such registrations and qualifications in
effect at all times during the Registration Period, and (iv) take all other
actions reasonably necessary or advisable to qualify the Registrable Securities
for sale in such jurisdictions; PROVIDED, HOWEVER, that the Company shall not be
required in connection therewith or as a condition thereto to (A) qualify to do
business in any jurisdiction where it would not otherwise be required to qualify
but for this Section 3(d), (B) subject itself to general taxation in any such
jurisdiction, (C) file a general consent to service of process in any such
jurisdiction, (D) provide any undertakings that cause the Company undue expense
or burden, or (E) make any change in its charter or bylaws, which in each case
the Board of Directors of the Company determines to be contrary to the best
interests of the Company and its stockholders.

          (e)  INTENTIONALLY OMITTED.

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          (f)  As promptly as practicable after becoming aware of such event,
the Company shall notify each Investor by telephone and facsimile of the
happening of any event, of which the Company has knowledge, as a result of which
the prospectus included in the Registration Statement, as then in effect,
includes an untrue statement of a material fact or omission to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading, and, use commercially reasonable efforts promptly to prepare a
supplement or amendment to the Registration Statement to correct such untrue
statement or omission, and deliver such number of copies of such supplement or
amendment to each Investor as such Investor may reasonably request.

          (g)  The Company shall use commercially reasonable efforts (i) to
prevent the issuance of any stop order or other suspension of effectiveness of a
Registration Statement, and, if such an order is issued, to obtain the
withdrawal of such order at the earliest practicable moment (including in each
case by amending or supplementing such Registration Statement) and (ii) to
notify each Investor who holds Registrable Securities being sold (or, in the
event of an underwritten offering, the managing underwriters) of the issuance of
such order and the resolution thereof (and if such Registration Statement is
supplemented or amended, deliver such number of copies of such supplement or
amendment to each Investor as such Investor may reasonably request).

          (h)  The Company shall permit a single firm of counsel designated by
the Initial Investors to review the Registration Statement and all amendments
and supplements thereto a reasonable period of time prior to its filing with the
SEC, and not file any document in a form to which such counsel reasonably
objects.

          (i)  The Company shall make generally available to its security
holders as soon as practical, but not later than ninety (90) days after the
close of the period covered thereby, an earnings statement (in form complying
with the provisions of Rule 158 under the Securities Act) covering a
twelve-month period beginning not later than the first day of the Company's
fiscal quarter next following the effective date of the Registration Statement.

          (j)  At the request of any Investor in the case of an underwritten
public offering, the Company shall furnish, on the date of effectiveness of the
Registration Statement (i) an opinion, dated as of such date, from counsel
representing the Company addressed to the Investors and in form, scope and
substance as is customarily given in an underwritten public offering and (ii) a
letter, dated such date, from the Company's independent certified public
accountants in form and substance as is customarily given by independent
certified public accountants to underwriters in an underwritten public offering,
addressed to the underwriters, if any, and the Investors.

          (k)  INTENTIONALLY OMITTED.

          (l)  The Company shall hold in confidence and not make any disclosure
of information concerning an Investor provided to the Company unless (i)
disclosure of such information is necessary to comply with federal or state
securities laws, (ii) the disclosure of

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such information is necessary to avoid or correct a misstatement or omission in
any Registration Statement, (iii) the release of such information is ordered
pursuant to a subpoena or other order from a court or governmental body of
competent jurisdiction, (iv) such information has been made generally available
to the public other than by disclosure in violation of this or any other
agreement, or (v) such Investor consents to the form and content of any such
disclosure. The Company agrees that it shall, upon learning that disclosure of
such information concerning an Investor is sought in or by a court or
governmental body of competent jurisdiction or through other means, give prompt
notice to such Investor prior to making such disclosure, and allow the Investor,
at its expense, to undertake appropriate action to prevent disclosure of, or to
obtain a protective order for, such information.

          (m)  The Company shall use commercially reasonable efforts to promptly
cause all of the Registrable Securities covered by the Registration Statement to
be listed on the NNM, the SmallCap, the NYSE or the AMEX or another national
securities exchange and on each additional national securities exchange on which
securities of the same class or series issued by the Company are then listed, if
any, if the listing of such Registrable Securities is then permitted under the
rules of such exchange, and, without limiting the generality of the foregoing,
to arrange for or maintain at least two market makers to register with the
National Association of Securities Dealers, Inc. as such with respect to such
Registrable Securities.

          (n)  The Company shall provide a transfer agent and registrar, which
may be a single entity, for the Registrable Securities not later than the
effective date of the Registration Statement.

          (o)  The Company shall cooperate with the Investors who hold
Registrable Securities being offered and the managing underwriter or
underwriters, if any, to facilitate the timely preparation and delivery of
certificates representing Registrable Securities to be offered pursuant to the
Registration Statement and enable such certificates to be in such denominations
or amounts, as the case may be, as the managing underwriter or underwriters, if
any, or the Investors may reasonably request and registered in such names as the
managing underwriter or underwriters, if any, or the Investors may request, and,
within three (3) business days after the Registration Statement which includes
Registrable Securities is ordered effective by the SEC, the Company shall
deliver, and shall cause legal counsel selected by the Company to deliver, to
the transfer agent for the Registrable Securities (with copies to the Investors
whose Registrable Securities are included in such Registration Statement), an
opinion of such counsel in the form attached hereto as EXHIBIT 1.

          (p)  At the request of any Investor, the Company shall prepare and
file with the SEC such amendments (including post-effective amendments) and
supplements to a Registration Statement and the prospectus used in connection
with such Registration Statement as may be necessary in order to change the plan
of distribution set forth in such Registration Statement.

          (q)  The Company shall comply with all applicable laws related to a
Registration Statement and offering and sale of securities and all applicable
rules and regulations of governmental authorities in connection therewith
(including, without limitation, the Securities

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Act and the Securities Exchange Act of 1934, as amended (the "EXCHANGE ACT"),
and the rules and regulations promulgated by the SEC.)

          (r)  From and after the date of this Agreement, the Company shall not,
and shall not agree to, allow the holders of any securities of the Company to
include any of their securities which are not Registrable Securities in the
Registration Statement under Section 2(a) hereof or any amendment or supplement
thereto under Section 3(b) hereof without the consent of the holders of a
majority in interest of the Registrable Securities other than as identified on
SCHEDULE 3(r) hereto.

     4.   OBLIGATIONS OF THE INVESTORS.

          In connection with the registration of the Registrable Securities, the
Investors shall have the following obligations:

          (a)  It shall be a condition precedent to the obligations of the
Company to complete the registration pursuant to this Agreement with respect to
the Registrable Securities of a particular Investor that such Investor shall
furnish to the Company such information regarding itself, the Registrable
Securities held by it and the intended method of disposition of the Registrable
Securities held by it as shall be reasonably required to effect the registration
of such Registrable Securities and shall execute such documents in connection
with such registration as the Company may reasonably request. At least five (5)
trading days prior to the first anticipated filing date of the Registration
Statement, the Company shall notify each Investor of the information the Company
requires from each such Investor.

          (b)  Each Investor, by such Investor's acceptance of the Registrable
Securities, agrees to cooperate with the Company as reasonably requested by the
Company in connection with the preparation and filing of the Registration
Statement hereunder, unless such Investor has notified the Company in writing of
such Investor's election to exclude all of such Investor's Registrable
Securities from such Registration Statement. The Company shall not be required
to include in any Registration Statement the Registrable Securities of any
Investor who fails to cooperate with the Company as reasonably requested in
connection with the preparation and filing of the Registration Statement.

          (c)  Intentionally omitted.

          (d)  Each Investor agrees that, upon receipt of any notice from the
Company of the happening of any event of the kind described in Sections 3(f) or
3(g), such Investor will immediately discontinue disposition of Registrable
Securities pursuant to the Registration Statement covering such Registrable
Securities until such Investor's receipt of the copies of the supplemented or
amended prospectus contemplated by Sections 3(f) or 3(g) and, if so directed by
the Company, such Investor shall deliver to the Company (at the expense of the
Company) or destroy (and deliver to the Company a certificate of destruction)
all copies in such Investor's possession, of the prospectus covering such
Registrable Securities current at the time of receipt of such notice.

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          (e)  No Investor may participate in any underwritten distribution
hereunder unless such Investor (i) agrees to sell such Investor's Registrable
Securities on the basis provided in any underwriting arrangements in usual and
customary form entered into by the Company, (ii) completes and executes all
questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents reasonably required under the terms of such underwriting
arrangements, (iii) agrees to pay its pro rata share of all underwriting
discounts and commissions and any expenses in excess of those payable by the
Company pursuant to Section 5 below, and (iv) complies with all applicable laws
in connection therewith. Notwithstanding anything in this Section 4(e) to the
contrary, this Section 4(e) is not intended to limit an Investor's rights under
Sections 2(a) or 3(b) hereof.

          (f)  In the event that in the judgment of the Company, it is advisable
to suspend the use of a Prospectus included in the Registration Statement due to
pending material developments or other events which have not yet been publicly
disclosed and as to which the Company believes public disclosure would be
detrimental to the Company, the Company shall notify each Investor to such
effect, and, upon receipt of such notice, each Investor shall immediately
discontinue any sales of Registerable Securities pursuant to the Registration
Statement until the Investors receive copies of a supplemental or amended
Prospectus or until such Investors are advised in writing by the Company that
the then current Prospectus may be used and have received copies of any
additional or supplemental filings that are incorporated or deemed incorporated
by reference in such Prospectus. In the event that any such black-out occurs
during the period which the Company is required to cause a Registration
Statement to remain effective under Section 3 above, such a period shall be
extended for the number of days equal to the duration of such black-out.
Notwithstanding anything to the contrary herein, the Company shall not exercise
its rights under this Section 4(f) to suspend sales of Registerable Securities
for more than a total of 60 days in any 365-day period or for more than 15
consecutive days.

     5.   EXPENSES OF REGISTRATION. All reasonable expenses incurred by the
Company or the Investors in connection with registrations, filings or
qualifications pursuant to Sections 2 and 3 above, including, without
limitation, all registration, listing and qualifications fees, printers and
accounting fees, the fees and disbursements of counsel for the Company and the
reasonably incurred fees and disbursements of one counsel selected by the
Investors (not to exceed $5,000) shall be borne by the Company. In addition, the
Company shall pay all of the Investors' costs and expenses (including legal
fees) incurred in connection with the enforcement of the rights of the Investors
hereunder. The Company's obligations pursuant to this Section 5 shall be in
addition to the Company's obligations pursuant to Section 4(f) of the Securities
Purchase Agreement.

     6.   INDEMNIFICATION. In the event any Registrable Securities are included
in a Registration Statement under this Agreement:

          (a)  To the extent permitted by law, the Company will indemnify, hold
harmless and defend (i) each Investor who holds such Registrable Securities, and
(ii) the directors, officers, partners, members, employees and agents of such
Investor and each person

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who controls any Investor within the meaning of Section 15 of the Securities Act
or Section 20 of the Exchange Act, if any, (each, an "INDEMNIFIED PERSON"),
against any joint or several losses, claims, damages, liabilities or expenses
(collectively, together with actions, proceedings or inquiries by any regulatory
or self-regulatory organization, whether commenced or threatened, in respect
thereof, "CLAIMS") to which any of them may become subject insofar as such
Claims arise out of or are based upon: (i) any untrue statement or alleged
untrue statement of a material fact in a Registration Statement under which
Registrable Securities were registered under the Securities Act or the omission
or alleged omission to state therein a material fact required to be stated or
necessary to make the statements therein not misleading, (ii) any untrue
statement or alleged untrue statement of a material fact contained in any
preliminary prospectus if used prior to the effective date of such Registration
Statement, or contained in the final prospectus (as amended or supplemented, if
the Company files any amendment thereof or supplement thereto with the SEC) or
the omission or alleged omission to state therein any material fact necessary to
make the statements made therein, in light of the circumstances under which the
statements therein were made, not misleading, or (iii) any violation or alleged
violation by the Company of the Securities Act, the Exchange Act, any other law,
including, without limitation, any state securities law, or any rule or
regulation thereunder relating to the offer or sale of the Registrable
Securities (the matters in the foregoing clauses (i) through (iii) being,
collectively, "VIOLATIONS"). The Company shall reimburse the Investors and each
other Indemnified Person, promptly as such expenses are incurred and are due and
payable, for any reasonable legal fees or other reasonable expenses incurred by
them in connection with investigating or defending any such Claim.
Notwithstanding anything to the contrary contained herein, the indemnification
agreement contained in this Section 6(a) shall not apply to a Claim arising out
of or based upon a Violation which occurs in reliance upon and in conformity
with information furnished in writing to the Company by such Indemnified Person
expressly for use in the Registration Statement or any such amendment thereof or
supplement thereto. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of the Indemnified Person
and shall survive the transfer of the Registrable Securities by the Investors
pursuant to Section 9 hereof.

          (b)  In connection with any Registration Statement in which an
Investor is participating, each such Investor agrees severally and not jointly
to indemnify, hold harmless and defend, to the same extent and in the same
manner set forth in Section 6(a), the Company, each of its directors, each of
its officers who signs the Registration Statement, its employees, agents and
each person, if any, who controls the Company within the meaning of Section 15
of the Securities Act or Section 20 of the Exchange Act, each underwriter (if
any) and any other stockholder selling securities pursuant to the Registration
Statement or any of its directors or officers or any person who controls such
stockholder within the meaning of the Securities Act or the Exchange Act
(collectively and together with an Indemnified Person, an "INDEMNIFIED PARTY"),
against any Claim to which any of them may become subject, under the Securities
Act, the Exchange Act or otherwise, insofar as such Claim arises out of or is
based upon any Violation, in each case to the extent (and only to the extent)
that such Violation occurs in reliance upon and in conformity with written
information furnished to the Company by such Investor expressly for use in
connection with such Registration Statement; and subject to Section 6(c) such
Investor will reimburse any legal or other expenses (promptly as such expenses
are

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incurred and are due and payable) reasonably incurred by them in connection with
investigating or defending any such Claim; PROVIDED, HOWEVER, that the indemnity
agreement contained in this Section 6(b) shall not apply to amounts paid in
settlement of any Claim if such settlement is effected without the prior written
consent of such Investor, which consent shall not be unreasonably withheld;
PROVIDED, FURTHER, HOWEVER, that the Investor shall be liable under this
Agreement (including this Section 6(b) and Section 7) for only that amount as
does not exceed the net proceeds actually received by such Investor as a result
of the sale of Registrable Securities pursuant to such Registration Statement.
Such indemnity shall remain in full force and effect regardless of any
investigation made by or on behalf of such Indemnified Party and shall survive
the transfer of the Registrable Securities by the Investors pursuant to Section
9 hereof. Notwithstanding anything to the contrary contained herein, the
indemnification agreement contained in this Section 6(b) with respect to any
preliminary prospectus shall not inure to the benefit of any Indemnified Party
if the untrue statement or omission of material fact contained in the
preliminary prospectus was corrected on a timely basis in the prospectus, as
then amended or supplemented.

          (c)  Promptly after receipt by an Indemnified Person or Indemnified
Party under this Section 6 of notice of the commencement of any action
(including any governmental action), such Indemnified Person or Indemnified
Party shall, if a Claim in respect thereof is to made against any indemnifying
party under this Section 6, deliver to the indemnifying party a written notice
of the commencement thereof, and the indemnifying party shall have the right to
participate in, and, to the extent the indemnifying party so desires, jointly
with any other indemnifying party similarly noticed, to assume control of the
defense thereof with counsel mutually satisfactory to the indemnifying party and
the Indemnified Person or the Indemnified Party, as the case may be; PROVIDED,
HOWEVER, that such indemnifying party shall not be entitled to assume such
defense and an Indemnified Person or Indemnified Party shall have the right to
retain its own counsel with the fees and expenses to be paid by the indemnifying
party, if, in the reasonable opinion of counsel retained by the indemnifying
party, the representation by such counsel of the Indemnified Person or
Indemnified Party and the indemnifying party would be inappropriate due to
actual or potential conflicts of interest between such Indemnified Person or
Indemnified Party and any other party represented by such counsel in such
proceeding or the actual or potential defendants in, or targets of, any such
action include both the Indemnified Person or the Indemnified Party and the
indemnifying party and any such Indemnified Person or Indemnified Party
reasonably determines that there may be legal defenses available to such
Indemnified Person or Indemnified Party which are in conflict with those
available to such indemnifying party. The indemnifying party shall pay for only
one separate legal counsel for the Indemnified Person or the Indemnified
Parties, as applicable, and such legal counsel shall be selected by Investors
holding a majority-in-interest of the Registrable Securities included in the
Registration Statement to which the Claim relates (with the approval of the
Initial Investor if it holds Registrable Securities included in such
Registration Statement), if the Investors are entitled to indemnification
hereunder, or by the Company, if the Company is entitled to indemnification
hereunder, as applicable. The failure to deliver written notice to the
indemnifying party within a reasonable time of the commencement of any such
action shall not relieve such indemnifying party of any liability to the
Indemnified Person or Indemnified Party under this Section 6, except

                                       11
<Page>

to the extent that the indemnifying party is actually prejudiced in its ability
to defend such action. The indemnification required by this Section 6 shall be
made by periodic payments of the amount thereof during the course of the
investigation or defense, as such expense, loss, damage or liability is incurred
and is due and payable.

     7.   CONTRIBUTION. To the extent any indemnification by an indemnifying
party is prohibited or limited by law, the indemnifying party agrees to make the
maximum contribution with respect to any amounts for which it would otherwise be
liable under Section 6 to the fullest extent permitted by law as is appropriate
to reflect the relative fault of the indemnifying party, on the one hand, and
the Indemnified Person or Indemnified Party, as the case may be, on the other
hand, with respect to the Violation giving rise to the applicable Claim;
PROVIDED, HOWEVER, that (i) no contribution shall be made under circumstances
where the party would not have been liable for indemnification under the fault
standards set forth in Section 6, (ii) no person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any seller of Registrable Securities who
was not guilty of such fraudulent misrepresentation, and (iii) contribution
(together with any indemnification or other obligations under this Agreement) by
any seller of Registrable Securities shall be limited in amount to the net
amount of proceeds received by such seller from the sale of such Registrable
Securities.

     8.   REPORTS UNDER THE EXCHANGE ACT. With a view to making available to the
Investors the benefits of Rule 144 promulgated under the Securities Act or any
other similar rule or regulation of the SEC that may at any time permit the
Investors to sell securities of the Company to the public without registration
("RULE 144"), the Company agrees to:

          (a)  file with the SEC in a timely manner and make and keep available
all reports and other documents required of the Company under the Securities Act
and the Exchange Act so long as the Company remains subject to such requirements
(it being understood that nothing herein shall limit the Company's obligations
under Section 4(c) of the Securities Purchase Agreement) and the filing and
availability of such reports and other documents is required for the applicable
provisions of Rule 144; and

          (b)  furnish to each Investor so long as such Investor owns
Registrable Securities, promptly upon request, (i) a written statement by the
Company that it has complied with the reporting requirements of Rule 144, the
Securities Act and the Exchange Act, (ii) a copy of the most recent annual or
quarterly report of the Company and such other reports and documents so filed by
the Company, and (iii) such other information as may be reasonably requested to
permit the Investors to sell such securities under Rule 144 without
registration.

     9.   ASSIGNMENT OF REGISTRATION RIGHTS. The rights of the Investors
hereunder, including the right to have the Company register Registrable
Securities pursuant to this Agreement, shall be automatically assignable by each
Investor to any transferee of at least 10,000 shares of Registrable Securities
or any assignee of the Securities Purchase Agreement if: (i) the Investor agrees
in writing with the transferee or assignee to assign such rights, and a copy of
such agreement is furnished to the Company after such assignment, (ii) the
Company is

                                       12
<Page>

furnished with written notice of (A) the name and address of such transferee or
assignee, and (B) the securities with respect to which such registration rights
are being transferred or assigned, and (iii) the transferee or assignee agrees
in writing for the benefit of the Company to be bound by all of the provisions
contained herein. In addition, and notwithstanding anything to the contrary
contained in this Agreement, the Registrable Securities may be pledged, and all
rights of the Investors under this Agreement or any other agreement or document
related to the transactions contemplated hereby may be assigned, without further
consent of the Company, to a bona fide pledgee in connection with an Investor's
margin or brokerage account, subject to compliance with all applicable laws,
rules and regulations including all applicable securities laws.

     10.  AMENDMENT OF REGISTRATION RIGHTS. Provisions of this Agreement may be
amended and the observance thereof may be waived (either generally or in a
particular instance and either retroactively or prospectively), only with
written consent of the Company and Investors who hold a majority in interest of
the Registrable Securities or, in the case of a waiver, with the written consent
of the party charged with the enforcement of any such provision; PROVIDED,
HOWEVER, that no consideration shall be paid to an Investor by the Company in
connection with an amendment hereto unless each Investor similarly affected by
such amendment receives a pro-rata amount of consideration from the Company.
Unless an Investor otherwise agrees, each amendment hereto must similarly affect
each Investor. Any amendment or waiver effected in accordance with this Section
10 shall be binding upon each Investor and the Company.

     11   MISCELLANEOUS.

          (a)  A person or entity is deemed to be a holder of Registrable
Securities whenever such person or entity owns of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more persons or entities with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions,
notice or election received from the registered owner of such Registrable
Securities.

          (b)  Any notices required or permitted to be given under the terms of
this Agreement shall be sent by certified or registered mail (return receipt
requested) or delivered personally or by courier or by confirmed telecopy, and
shall be effective five (5) days after being placed in the mail, if mailed, or
upon receipt or refusal of receipt, if delivered personally or by courier or
confirmed telecopy, in each case addressed to a party. The addresses for such
communications shall be:

               If to the Company:

               Cambridge Heart, Inc.
               1 Oak Park Drive
               Bedford, Massachusetts 01730
               Telephone: (781) 271-1200
               Facsimile: (781) 276-7924
               Attn: President

                                       13
<Page>

               with a copy simultaneously transmitted by like means to:

               Hale and Dorr LLP
               60 State Street
               Boston, Massachusetts  02109
               Telephone: (617) 526-6000
               Facsimile: (617) 526-5000
               Attn: John A. Burgess, Esquire

               and if to any Investor, at such address as such Investor shall
have provided in writing to the Company, or at such other address as each such
party furnishes by notice given in accordance with this Section 11(b).

          (c)  Failure of any party to exercise any right or remedy under this
Agreement or otherwise, or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

          (d)  This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware applicable to contracts made and to be
performed in the State of Delaware. The Company and each Investor irrevocably
consents to the jurisdiction of the United States federal courts and the state
courts located in the State of Delaware in any suit or proceeding based on or
arising under this Agreement and irrevocably agrees that all claims in respect
of such suit or proceeding may be determined in such courts. The Company and
each Investor irrevocably waives the defense of an inconvenient forum to the
maintenance of such suit or proceeding. The parties further agree that service
of process upon the other party, mailed by first class mail shall be deemed in
every respect effective service of process upon such party in any such suit or
proceeding. Nothing herein shall affect the parties' right to serve process in
any other manner permitted by law. Each party agrees that a final non-appealable
judgment in any such suit or proceeding shall be conclusive and may be enforced
in other jurisdictions by suit on such judgment or in any other lawful manner.

          (e)  This Agreement and the Securities Purchase Agreement (including
all schedules and exhibits thereto) constitute the entire agreement among the
parties hereto with respect to the subject matter hereof and thereof. There are
no restrictions, promises, warranties or undertakings, other than those set
forth or referred to herein and therein. This Agreement and the Securities
Purchase Agreement supersede all prior agreements and understandings among the
parties hereto with respect to the subject matter hereof and thereof.

          (f)  Subject to the requirements of Section 9 hereof, this Agreement
shall inure to the benefit of and be binding upon the successors and assigns of
each of the parties hereto.

          (g)  The headings in this Agreement are for convenience of reference
only and shall not limit or otherwise affect the meaning hereof.

                                       14
<Page>

          (h)  This Agreement may be executed in two or more counterparts, each
of which shall be deemed an original but all of which shall constitute one and
the same agreement. This Agreement, once executed by a party, may be delivered
to the other party hereto by facsimile transmission of a copy of this Agreement
bearing the signature of the party so delivering this Agreement.

          (i)  Each party shall do and perform, or cause to be done and
performed, all such further acts and things, and shall execute and deliver all
such other agreements, certificates, instruments and documents, as the other
party may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated
hereby.

          (j)  All consents, approvals and other determinations to be made by
the Investors pursuant to this Agreement shall be made by the Investors holding
a majority in interest of the Registrable Securities held by all Investors.

          (k)  The initial number of Registrable Securities included on any
Registration Statement and each increase to the number of Registrable Securities
included thereon shall be allocated pro rata among the Investors based on the
number of Registrable Securities held by each Investor at the time of such
establishment or increase, as the case may be. In the event an Investor shall
sell or otherwise transfer any of such holder's Registrable Securities, each
transferee shall be allocated a pro rata portion of the number of Registrable
Securities included on a Registration Statement for such transferor. Any shares
of Common Stock included on a Registration Statement and which remain allocated
to any person or entity which does not hold any Registrable Securities shall be
allocated to the remaining Investors pro rata based on the number of shares of
Registrable Securities then held by such Investors.

          (l)  Each party to this Agreement has participated in the negotiation
and drafting of this Agreement. As such, the language used herein shall be
deemed to be the language chosen by the parties hereto to express their mutual
intent, and no rule of strict construction will be applied against any party to
this Agreement.

          (m)  For purposes of this Agreement, the term "business day" means any
day other than a Saturday or Sunday or a day on which banking institutions in
the State of New York are authorized or obligated by law, regulation or
executive order to close, and the term "trading day" means any day on which NNM
or, if the Common Stock is not then traded on NNM, the principal securities
exchange or trading market where the Common Stock is then listed or traded, is
open for trading.

                            [SIGNATURE PAGE FOLLOWS]

                                       15
<Page>

     IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed as of the date first above written.

CAMBRIDGE HEART, INC.


By: /s/ David A. Chazanovitz
   --------------------------------
Name: David A. Chazanovitz
     ------------------------------
Its: President and CEO
    -------------------------------


PURCHASERS:


THE TAIL WIND FUND, LTD.


By: /s/ A.P. MacKellar
   --------------------------------
Name: A.P. MacKellar
     ------------------------------
Its: Director
    -------------------------------

/s/ Robert P. Khederian
-----------------------------------
Robert P. Khederian