›Portfolio Companies

Past, Present and Future Leaders

InterWest is proud and privileged to partner with visionary management teams who are shaping the future of Information Technology and Healthcare. The companies they have started are vital parts of the portfolio of industry-leading startups that InterWest has helped over the last four decades.

Our Companies

Early stage IT and Healthcare Investing



Spinal Dynamics

Fri, 06/15/2012 - 10:09 -- anonghost

Spinal Dynamics was a medical device company that developed one of the leading artificial disk implants, Aeto, to replace natural intervertebral disks damaged by degenerative joint disease. The company was acquired by Medtronic in 2002.


Fri, 06/15/2012 - 10:07 -- anonghost

PercuSurge pioneered a new market segment in interventional cardiology products with a series of balloon catheters designed to trap and remove the potentially harmful debris that breaks loose during balloon angioplasty and stent placement procedures. The company was acquired by Medtronic in 2000.


Fri, 06/15/2012 - 10:06 -- anonghost

Nanogen's advanced technologies provided researchers, clinicians and physicians worldwide with improved methods and tools to predict, diagnose, and ultimately, help treat disease. The company's products included real-time PCR reagents, the NanoChip(R) 400 electronic microarray platform and a line of rapid, point-of-care diagnostic tests. Nanogen was acquired by Epoch Biosciences in 2009.

LenSx Lasers

Fri, 06/15/2012 - 10:05 -- anonghost

LenSx Lasers developed a next-generation femtosecond laser that operates inside the eye to make cataract surgery safer and more effective. The founding team is the same team from IntraLase, a highly successful InterWest company that manufactured lasers for vision correction.


Fri, 06/15/2012 - 10:04 -- anonghost

IntraLase developed a revolutionary all-laser surgical technology that made precise surgical flaps for laser vision correction procedures that has seen enormous success in the field of refractive surgery. IntraLase had an initial public offering in 2004 and was acquired by Advanced Medical Optics in 2007. Advanced Medial Optics was acquired by Abbott Labs in 2009.

InterVentional Technologies

Fri, 06/15/2012 - 10:02 -- anonghost

IVT was founded in 1983 to develop new technologies and devices for use in the field of intravascular intervention in arteriosclerotic disease. The company introduced tools for use in vascular microsurgery as well as in traditional balloon dilatation intervention. The company was acquired by Boston Scientific in 2001.

Innovasive Devices

Fri, 06/15/2012 - 10:01 -- anonghost

Innovasive Devices made and sold sports medicine devices used in the surgical repair of soft tissue in the knees and shoulders. It was acquired by Johnson & Johnson in 1999.

Epicor Medical

Fri, 06/15/2012 - 10:00 -- anonghost

Epicor Medical was founded in 1999 to develop new devices and procedures for the treatment of atrial fibrillation using high-intensity focused ultrasound. Epicor Medical's innovative approach to treating atrial fibrillation stands to cure patients, while minimizing complications associated with most invasive treatments available today. St. Jude Medical acquired the company in 2004.


Fri, 06/15/2012 - 09:59 -- anonghost

ArthroCare develops and manufactures surgical devices, instruments, and implants that enhance surgical techniques and improve patient outcomes. Many of ArthroCare’s devices use its patented Coblation technology, which precisely dissolves target tissue and limits damage to surrounding healthy tissue.

Signal Pharmaceuticals

Fri, 06/15/2012 - 09:57 -- anonghost

Signal was established to develop a new generation of small molecule pharmaceuticals based on recent discoveries about the way genes are regulated. The company's products used gene control — essentially turning genes on and off — to treat inflammatory diseases, viral infections, and neurobiological disorders. The company was acquired by Celgene in September 2000.


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