When was Keystone Heart founded?

Keystone Heart was founded in 2004 and raised its 1st funding round 10 years after it was founded.

Where is Keystone Heart located?

Keystone Heart is headquartered in Tampa, United States.

How many employees does Keystone Heart have?

As of Jul 01, 2024, the latest employee count at Keystone Heart is 51 - 200.

Is Keystone Heart a funded company?

Keystone Heart is a funded company, having raised a total of $***** in its 1st and only funding round, a Series B round on May 2014.

When was the latest funding round of Keystone Heart?

Keystone Heart's latest funding was a $***** Series B round on May 2014, with participation from 1 investor. Its primary sector is Neurology. In United States, the Neurology sector has seen $3.08B in funding in 2026 to date.

Where does Keystone Heart rank among its competitors?

Keystone Heart ranks 9th amongst 16 active competitors, of which 7 are funded. It stands 7th in terms of total funding among its competitors. The most recent competitor to raise funding was Emboline, which secured $20M in Mar, 2026.

Who are the top competitors of Keystone Heart?

Keystone Heart's top competitors include Synaptive Medical, Emboline and Claret Medical. Among them, Emboline secured the most recent funding round in March, 2026.

Keystone Heart - 2026 Company Profile, Funding & Competitors

Company Details

Keystone Heart produces TriGuard, embolic cerebral protection devices to decrease the risk of stroke, neurocognitive decline and dementia caused by brain emboli during cardiovascular procedures such as Surgical valve replacement, Ablation for Atrial fibrillation, TAVR etc... The TriGuard device uses a self deploying and self positioning Nitinol frame and mesh to provide coverage to all three major blood vessels arising from the Aortic arch. TriGuard is not commercially available in USA as of June 2016.

Website: keystoneheart.com
Email ID: *****@keystoneheart.com

Key Metrics

Founded Year

2004

Location

Tampa, United States

Stage

Acquired

Total Funding

$14M in 1 round

Latest Funding Round

Series B, May 2014, $*****

Investors

Western Technology Investment & 1 more

Ranked

9^th among 16 active competitors

Employee Count

51 - 200 as on Jul 01, 2024

Similar Companies

Synaptive Medical & 19 more

Exit Details

Acquired by Venus MedTech (Sep 25, 2018)

View Keystone Heart's full profile

Keystone Heart got acquired by Venus MedTech on Sep 25, 2018 at an acquisition amount of $*****.

Click here to take a look at Keystone Heart's acquisition in detail

Keystone Heart has raised a total funding of $14M over 1 round. Its latest funding round was a Series B round on May 2014 for $*****. 1 investor participated in its latest round. Keystone Heart has 2 institutional investors.

Here is the list of recent funding rounds of Keystone Heart:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
May 2014	2844878	Series B	2765825	5977457	3111304	4515513

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View details of Keystone Heart's funding rounds and investors

Keystone Heart's employee count trend

Keystone Heart has 51 - 200 employees as of Jul 24. Here is Keystone Heart's employee count trend over the years:

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Top competitors of Keystone Heart include Synaptive Medical, Emboline and Claret Medical. Here is the list of Top 10 competitors of Keystone Heart, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Synaptive Medical 2012, Mississauga (Canada), Series C	Planning and imaging solutions for neurosurgery	$76.8M	General Atlantic, Sensegain Capital & 10 others	63/100
2nd	Emboline 2011, Santa Cruz (United States), Series D	Developer of an aortic embolic protection device	$102M	SV Tech Ventures, Matrix Capital Management ... & 9 others	56/100
3rd	Claret Medical 2009, Santa Rosa (United States), Acquired	Developer of cerebral vascular protection systems for use during endovascular procedures	$51.4M	Sante Ventures, Lightstone Ventures & 6 others	53/100
4th	Protembis 2013, Aachen (Germany), Public	Manufacturer of cerebral protection device	$45.2M	Coparion, Segulah Medical Acceleration & 19 others	47/100
5th	Filterlex Medical 2015, Tel Aviv (Israel), Series B	Developer of an embolic protection device	$16.9M	Medical Technology Venture Partners, Europa ... & 4 others	46/100
6th	Transverse Medical 2011, Golden (United States), Series B	Developer of a device to prevent stroke during transcatheter aortic valve replacement heart procedures	$26.8M	Grant Park Ventures, Flight Partners Capital	40/100
7th	NeuraMedica 2014, Oregon City (United States), Seed	Developer of a dural clip that helps in durotomy and orthopedic spinal closures	$1.85M	NIH, HHS & 1 others	35/100
8th	Invictus Medical 2010, San Antonio (United States), Series A	Innovating NICU environments, improving newborn lives through noise reduction technology	$8.93M	-	35/100
9th	Keystone Heart 2004, Tampa (United States), Acquired	Embolic cerebral protection devices	$14M	Western Technology Investment, Orbimed	32/100
10th	Embrella Cardiovascular 2007, Malvern (United States), Acquired	Cardiovascular procedure protection	$6.7M	BioStar Capital, 415 CAPITAL & 2 others	32/100