Exhibit 10.3

                             ASSIGNMENT OF SUBLEASE

     This  Assignment of Sublease (the  "Assignment")  is entered into this 30th
day of March,  2001, by and between  HORIZON MEDICAL  PRODUCTS,  INC., a Georgia
Corporation (the "Assignor"),  VASCUTECH ACQUISITION LLC, a Delaware corporation
(the  "Assignee"),  and IDEAS FOR  MEDICINE,  INC.,  formerly  known as CryoLife
Acquisition Corporation, a Florida corporation (the "Sublessor").

     WHEREAS,  Sublessor  entered into that certain  Commercial  Lease Agreement
dated  March 5, 1997,  ("Master  Lease") by which  Sublessor  leased from Secret
Promise, Ltd., as  successor-in-interest to J. Crayton Pruitt Family Trust u/t/a
9/17/76 ("Landlord"),  certain premises ("Premises") located at 3101 37th Avenue
North, St.  Petersburg,  Florida,  as more  particularly  described in Exhibit A
attached hereto;

     WHEREAS,  Assignor, as Sublessee,  entered into that certain Sublease dated
October 9, 2000  ("Sublease"),  by which  Assignor  subleased  the Premises from
Sublessor;

     WHEREAS,   Assignor  entered  into  that  certain  Assignment  of  Sublease
(Sublessee's  Interest)  dated on or about  October  9,  2000  (the  "Collateral
Assignment") with Bank of America ("BOA");

     WHEREAS,  the Master Lease  provides  that  Sublessor  may not enter into a
sublease or permit any other  entity to occupy the Premises  without  Landlord's
prior written approval;

     WHEREAS,  the Sublease  provides that Assignor may not assign its rights or
interests without Sublessor's prior written approval;

     WHEREAS,  the Collateral  Assignment  provides that Assignor may not assign
its rights or interests under the Sublease  without the prior written consent of
BOA; and

     WHEREAS,  Landlord  and  Sublessor  have  approved  and  consented  to this
Assignment  pursuant to that certain  Consent to  Assignment of Sublease of even
date herewith.

     NOW, THEREFORE,  for good and valuable consideration by each of the parties
hereto  to  the  other,   the  receipt  and   sufficiency  of  which  is  hereby
acknowledged, the parties agree as follows:

     1. Assignor hereby assigns to Assignee all of its right, title and interest
in and to the Sublease and the Premises and Assignee  hereby assumes all rights,
promises, covenants, conditions and duties under the Sublease to be performed by
the subtenant under the Sublease which accrue after the date hereof.

     2.  Sublessor  does hereby  consent to the  assignment  of the  Sublease as
provided  herein,  and hereby  acknowledges and agrees that Assignor will not be
liable or  obligated  for the payment of any sums due under the  Sublease or the
performance  of any  obligations  under the Sublease which accrue after the date

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hereof, and Assignee will not be liable or obligated for the payment of any sums
due under the Sublease or the performance of any obligations  under the Sublease
which accrued prior to the date hereof.

     3.  All  notices,   demands,   requests,   elections,   consents  or  other
communications  required or permitted  to be given  pursuant to the terms of the
Sublease shall be addressed as follows:

Sublessor:                 IDEAS for Medicine, Inc.
                           c/o CryoLife, Inc.
                           1655 Roberts Boulevard
                           Kennesaw, Georgia  30144
                           Attn:  Vice president of Finance

with a copy to:            Arnall Golden & Gregory, LLP
                           2800 One Atlantic Center
                           1201 West Peachtree Street
                           Atlantic, Georgia  30309-3450
                           Attn:  Clinton D. Richardson, Esq.

Sublessee:                 Vascutech Acquisition LLC
                           164 Middlesex Turnpike
                           Burlington, MA  01803
                           Attn:  Corporate Controller

     4. By execution  hereof the parties hereto covenant and warrant,  except as
herein  amended and as amended by the Consent to  Assignment  of  Sublease,  the
Sublease  remains  unchanged and is in full force and effect in accordance  with
the terms and provisions contained therein.

     In addition, by execution hereof Assignor hereby represents and warrants to
each of Assignee and Sublessor that the Collateral Assignment has been released,
satisfied and terminated by BOA on or before the date hereof,  and that Assignor
has the full right and authority to enter into and  consummate  this  Assignment
without notice to, or the consent or approval of, BOA. As a condition  precedent
to the effectiveness of the release of Assignor from future obligations accruing
after the date of this  Assignment,  Assignor  agrees to provide to Assignee and
Sublessor a copy of the executed written instrument of release,  satisfaction or
termination of the Collateral Assignment by BOA in recordable form.

                                       2
<PAGE>


     IN WITNESS  WHEREOF,  the parties  hereto have hereunto set their hands and
seals as of the day and year first above written.

                            Assignor :

                            Horizon Medical Products, Inc.
                            By:   /s/ William E. Peterson, Jr.
                                  --------------------------------------
                            Its:  President
                                  --------------------------------------


                            Assignee:

                            Vascutech Acquisition LLC
                            By:   /s/ David B. Roberts
                                  --------------------------------------
                            Its:  Chief Financial Officer
                                  --------------------------------------

                            Sublessor:

                            IDEAS for Medicine, Inc.
                            By:   /s/ D.A. Lee
                                  --------------------------------------
                            Its:  VP Finance and CFO
                                  --------------------------------------


                                       3
<PAGE>


                      Guarantee of Payment and Performance

     In consideration of the Sublessor's  consent to this Assignment of Sublease
to Assignee,  the  undersigned  VASCUTECH,  INC., a  corporation  organized  and
existing  under  the laws of  Delaware  and the 100%  parent  of  Assignee  (the
"Guarantor"),  hereby unconditionally guarantees to Sublessor that Assignee will
duly and  punctually  pay or perform all  obligations  under the  Sublease  (the
"Guaranteed  Obligations").  This  Guaranty is an  absolute,  unconditional  and
continuing guaranty of the full and punctual payment and performance by Assignee
of the Guaranteed  Obligations and not of their collectibility only and is in no
way conditioned upon any requirement that Sublessor first attempt to collect any
of the Guaranteed  Obligations  from Assignee or resort to any security or other
means of obtaining payment of any of the Guaranteed Obligations.

     The  Guarantor  further  agrees,  as the  principal  obligor  and  not as a
guarantor only, to pay to Sublessor  forthwith upon demand, in funds immediately
available to Sublessor, all reasonable costs and expenses (including court costs
and legal  expenses)  incurred or expended by Sublessor in connection  with this
Guarantee and the enforcement thereof.

                           VASCUTECH, INC.



                           By: /s/ David B. Roberts
                                   Name: David B. Roberts
                                   Title:  CFO



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