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Acorn Cardiovascular, Inc.
Status: Private
Fund: Fund III, Vintage Fund
St. Paul, MN
http://www.acorncv.com
Medical devices for the treatment of congestive heart failure.
Alsius Corporation
Status: Public "ALUS"
Fund: Fund II
Irvine, CA
http://www.alsius.com
Proprietary technology targeting severe traumatic brain injury, ischemic stroke and cardiac arrest.
Altiva Corporation
Status: Private
Fund: Fund III
Charlotte, NC
www.altivacorp.com
Medical devices for the spine.
AngioGuard, Inc.
Status: Acquired, Exited
Fund: Fund II
Minneapolis, MN
Proprietary medical devices to reduce the risk of embolization in interventional procedures. Acquired by Johnson & Johnson in July 1999.

Anulex, Inc.
Status: Private
Funds: Fund III, IV, Vintage Fund
Minnetonka, MN
http://www.anulex.com
Medical devices for repairing the anulus, the outer wall of the spinal disc. (Spinout from ProtoStar incubator)

Asthmatx, Inc.
Status: Private
Fund: Fund III
Mountain View, CA
http://www.asthmatx.com
Developing an interventional medical device for the bronchoscopic treatment of patients with severe asthma.
(Spinout from Broncus)

Atritech, Inc.
Status: Private
Funds: Fund III, IV, Vintage Fund
Plymouth, MN
http://www.atritech.net
Medical devices for the prevention of atrial fibrillation related stroke.
Axya Medical, Inc.
Status: Private, Exited
Fund: Fund II
Beverly, MA
http://www.axya.com
Proprietary technology for the welding of surgical sutures and polymers for minimally invasive surgery and tissue approximation.
Broncus Technologies, Inc.
Status: Private
Fund: Fund III, Vintage Fund
Mountain View, CA
www.broncus.com
Medical devices for the treatment of emphysema.
CardioGenesis Corporation
Status: Public, Exited, Since Acquired
Fund: Fund I
Irvine, CA
Medical devices for the treatment of coronary artery disease. Acquired by Eclipse Surgical Technologies in March 1999.
Conceptus, Inc
Status: Public "CPTS", Exited
Fund: Fund I
San Carlos, CA
http://www.conceptus.com
Less invasive technology for use in reproductive medicine.
CVRx, Inc.
Status: Private
Funds: Fund III, IV, Vintage Fund
Maple Grove, MN
www.cvrx.com
Medical devices for the cardiovascular market. (Spin out from Protostar incubator)
Endocardial Solutions, Inc.
Status: Public "ECSI", Exited, Since Acquired
Fund: Fund I
St Paul, MN
http://www.endocardial.com
Minimally invasive technology for the diagnosis of abnormal heart rhythms. Acquired by St. Jude Medical in January 2005.
Endovascular Technologies, Inc.
Status: Public, Exited, Since Acquired
Fund: Fund I
Menlo Park, CA
Technology that enables endovascular repair of diseased or damaged vascular structures. Acquired by Guidant in December 1997.
Exogen, Inc.
Status: Public, Acquired, Exited
Fund: Fund I
Piscataway, NJ
Medical technologies focused on the biophysical treatment of musculoskeletal injury and disease. Acquired by Smith and Nephew in September 1999.
Fox Hollow Technologies, Inc.
Status: Public "FOXH", Exited
Fund: Fund II
Menlo Park, CA
http://www.foxhollowtech.com
Medical devices primarily for the treatment of peripheral artery disease.
InnerDyne, Inc.
Status: Public, Exited, Since Acquired
Fund: Fund I
Sunnyvale, CA
Minimally invasive surgical access products. Acquired by Tyco in October 2000.
Innovasive Devices, Inc.
Status: Public, Exited, Since Acquired
Fund: Fund I
Marlborough, MA
Proprietary tissue repair systems which facilitate the repair of soft tissue injuries. Acquired by Johnson & Johnson in November 1999.
InSound Medical, Inc.
Status: Private
Fund: Fund III, Vintage Fund
Newark, CA
http://www.insoundmedical.com
Minimally invasive implantable hearing device.
Insulet Corporation
Status: Public "PODD", Exited
Fund: Fund IV
Beverly, MA
http://www.insulet.com/
Disposable insulin pumps for treatment of diabetes.
LipoScience, Inc.
Status: Private
Fund: Fund III, Vintage Fund
Raleigh, NC
http://www.liposcience.com
Developer of a diagnostic test that determines an individual's propensity to be at risk for Coronary Heart Disease through the analysis of lipoprotein subclasses.
Micro Interventional Systems, Inc.
Status: Acquired, Exited
Fund: Fund I
Sunnyvale, CA
Medical technologies for the interventional neuroradiology and interventional radiology markets. Acquired by Medtronic in November 1995.
Solarant Medical
Status: Acquired, Exited
Fund: Fund II
Pleasanton,CA
Innovative technology to cure female stress urinary incontinence.
Acquired by American Medical Systems in May 2006.
Spine Wave, Inc.
Status: Private
Fund: Fund III
Shelton, CT
http://www.spinewave.com
Medical devices for the orthopedic market. (Spinout from ProtoStar incubator)

Suros Surgical Systems, Inc.
Status: Acquired, Exited
Fund: Fund IV
Indianapolis, IN
http://www.surossurgical.com
Medical device manufacturer of a minimally-invasive tissue excision and biopsy device. Acquired by Hologic, Inc. in July 2006.
Verax Biomedical, Inc.
Status: Private
Fund: Fund IV
Worcester, MA
www.veraxbiomedical.com
Develops bacterial testing techniques intended to address key unmet medical and safety needs.
Urologix, Inc.
Status: Public "ULGX", Exited
Fund: Fund I
Minneapolis, MN
http://www.urologix.com
Minimally-invasive medical devices for the treatment of urological disorders.
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