Four Houston companies showed the city what they're made of at TMCx's recent Demo Day. Courtesy of TMCx

Earlier this month, 16 medical device companies wrapped up their time at the Texas Medical Center's accelerator program and pitched their companies to fellow health professionals, guests, and more. While each made important connections in the local ecosystem during the program, a quarter of the entrepreneurs had roots in Houston already.

Four of the 16 TMCx09 companies that are headquartered in Houston. They have built solutions within sepsis, surgery, and transplant spaces in health care. Here's a little more about the homegrown companies that pitched at the event.

CorInnova

Photo via corinnova.com

The standard practice for acute heart failure patients is very invasive, says William Altman, CEO of CorInnova.

"The problem with existing devices is that they have invasive blood contact," Altman says. "Problem with that is blood contact is bad. It can cause up to 15 percent rate of stroke, which could kill you, and after five to seven days it provides 10 percent rate of blood destruction and has a 47 percent rate of kidney disfunction."

CorInnova's technology features a device that can be easily inserted through a 1-inch incision, and then be used for increase blood pumping by 50 percent.

"Surgeons tell us this is less invasive than minimally invasive aortic valve replacement, which is a widely done surgery, so this promises widespread adoption for our technology as we get it approved," Altman says.

The human prototype is expected to be ready in two years, with the next year being focused on animal studies. CorInnova is raising $12 million to accomplish its goals.

Ictero Medical

Getty Images

An estimated 10 to 15 percent of the United States population will get a gallstone in their lifetime. Should one of those stones cause trouble or blockages, the only solution is to remove the gallbladder completely through surgery. However, Matthew Nojoomi, CEO and co-founder of Ictero Medical, has another idea.

Ictero Medical has created a minimally invasive treatment that uses cryoablation to defunctionize the gallbladder without having to remove it.

"The CholeSafe System not only treats the source of the disease, but it leverages existing clinical workflows that doctors use to access the gallbladder," says Nojoomi, adding that the process only uses mild station and pain control.

The company expects to get to humans in the next two years, and has launched a financing round.

PATH EX

path ex

Photo via tmc.com

Currently, sepsis is hard to identify in patience. Even if a patient is in a hospital, and that hospital knows the patient has sepsis, the individual still has a 38 percent chance of dying, says Sinead Miller, CEO of PATH EX.

"Right now the problems associated with sepsis are very clear," she says. "It's the leading cause of death in our ICUs, and it's also associated with the highest hospital cost and readmission rates."

PATH EX's technology allows medical professionals to better diagnose and treat sepsis. The PATH EX therapeutic device can be hooked up to a patient and flow his or her blood through the machine to capture bacteria, clean and recirculate the blood, and faster diagnose what sort of bacteria the patient has attracted. The device technology is similar to hemo hemodialysis, Miller explains.

The Houston company, which recently won big at the Ignite Healthcare Network's Fire Pitch Competition, was named an honoree within the Johnson and Johnson Breakthrough Medical Technologies Quickfire Challenge.

The company was recently received clearance from the Food and Drug Administration as a breakthrough device technology. PATH EX closed its $615,000 seed round — with plans for a series A next year — and has received $1 million in SBIR grant funding. The company was founded two years ago, and relocated to call Houston HQ this year.

Volumetric

Jordan Miller/Rice University

Volumetric is banking on their technology being among the inventions that will lead the medical industry into the future. The human tissue-printing technology company has created the 3D printer and the "ink" that can create whole organs for transplant.

"We can create complicated vascular architectures inside of soft water-based gels, in this case, mimicking the structure and function of human lung tissue," says Jordan Miller, CEO. "We can oxygenate red blood cells."

The company is commercializing its technology and has three streams of revenue, which as generated almost $1 million in revenue in Volumetric's second year. The company is also in the process of closing its seed round of fundraising.

Earlier this year, the startup, which works out of Rice University, was featured on the cover of Science magazine.

In 2020, the TMCx program will become a needs-based accelerator looking to solve problems the Texas Medical Center's member institutions face on a regular basis. Courtesy of TMC

TMC Innovation Institute announces redesign of its acceleration program for 2020

X-citing news

TMCx has been helping medical device and digital health startups create solid business plans and lasting relationships with Texas Medical Center institutions for five years, and on the accelerator's fifth anniversary, the team announced it's mixing things up a little to better accomplish those goals.

On Nov. 7, TMCx celebrated the conclusion of its ninth cohort, and 16 medical device companies pitched to a crowd at the TMC Innovation Institute. The companies in this cohort, just like the ones before it, were selected based on their technologies that solved a problem using digital health or medical devices. However, previously, the TMC's member institutions weren't directly part of the process until after the cohort was selected.

Based on feedback from alumni, member institutions, corporate partners, and stakeholders, TMCx has redesigned the program so that next year, the accelerator will focus on the specific needs of the needs that the organizations within the TMC have identified.

"Our focus going forward is on our member institutions — the clinics, the hospitals, and our partners who really bring forward these technologies into the future," says Emily Reiser, innovation strategist at the TMC Innovation Institute.

TMCx will become a needs-based accelerator program, Reiser says, and the team at the accelerator will partner with member institutions to run specific cohorts matched to their areas of interests.

The first step will be to identify these areas of interest, then in February of 2020, TMCx will invite a number of companies related to those interests to Houston for two weeks. The TMCx team, member institutions, and other stakeholders will get to interact with the companies and see how they stack up against each other, and to see if they can really fill the needs of the hospitals, clinics, and more.

Finally, after narrowing down the companies, the final startups and entrepreneurs will be invited to participate in a six-month accelerator program that will provide the same resources, connections, and programming that TMCx has always provided to advance the health startups.

Reiser says the TMCx team and all its partners will help identify the missing pieces these companies have and provide solutions, as well as making the right connections to all the right pilot partners, investors, clinical trial experts, and more.

"We'll be here to help them fill those gaps and make sure they have lasting relationships with our clinical partners in the hospitals," Reiser says.

At TMCx's Demo Day, the cohort's companies boasted of local deals and accomplishments. Courtesy of TMC

TMCx companies plant Houston roots with pilots, partnerships, and more

Lasting impact

At the conclusion of TMCx's recent Digital Health cohort — the most international group to date — there was only one Houston company among the 19. However, most of that group have developed a presence in Houston throughout the program.

Besides just being based here in Houston for four months, TMCx associate director, Lance Black, says the city has a lot to offer these startups.

"Why Houston? Why are these companies coming from everywhere to be here? Three big reasons," he says to the crowd at Demo Day. "The size and scale of the Texas Medical Center, the diversity of Houston, and the willingness and hunger of Houstonians wanting to be involved in innovation."

From pilots and partnerships to funding and mentorship, these TMCx08 companies announced the impact they've made on Houston at the Demo Day on Thursday, June 6. Meanwhile, TMCx had its own announcement that it would create early stage programming for professionals connected to the Texas Medical Center.

"It is the TMC's mission to advance health care, research, and education. It's our mission at the Innovation Institute to bring value back to the med center through health care technology," Black says. "And, through TMCx, we do that through startup companies."

Here are some examples of TMCx companies setting foundations in the Houston ecosystem.

Virti

Photo via virti.com

California-based Virti has developed an extended reality simulation technology for training medical staff. It's a cheaper, more effective way to train personnel, says Alex Young, CEO of the company.

Virti was selected to be in England's National Health Service accelerator — the only evidence-based AR/VR training company ever to be picked for the program, says Young.

With a presence in California and England, Young says he's also planted roots in Texas too, with sales representation based in the TMCx offices.

"In the time that we've been here, we've closed deals in Texas and back in California," Young adds.

Optellum

Photo via optellum.com

Optellum is changing the way lung cancer is being detected. With the startup's artificial intelligence-enabled detection software, oncologists can better identify at-risk patients, which translates into more treatment for those in need, and less for those who don't.

The company, which is based in the United Kingdom, has raised funds abroad while networking locally.

"TMCx has been amazing for a small British company like us. We have started pilots and trials at four TMC member institutions," says Vaclav Potesil, CEO.

Oncora Medical

Photo via oncoramedical.com

Angela Holmes, the director of product and customer solutions of Oncora Medical, sets the stage at her company's Demo Day pitch by telling a story of her friend's daughter who was diagnosed with cancer. She was forced to pick between two treatment options. She had no data or insights to help.

Oncora Medical's mission is to help fight cancer using data. Though based in Philadelphia, Oncora has Houston ties, since it formed a partnership with MD Anderson Cancer Center in April of 2017.

"We are so honored and gratified to be in a strategic, multi-year collaboration with MD Anderson to build this software system to save the world," Holmes says.

PreOp MD

Cody Duty/TMC

Within health care, the projected annual aggregate surgical expenditure by 2025 is expected to be $912 billion, says Christiana Obi, founder and CEO of PreOp MD, and a Houston-based anesthesiologist. She sees lack of information causing wasted surgical resources regularly.

PreOp MD — the only Houston-based TMCx company this cohort — has an app that allows for pre-procedure education, communication, and more that aims to prevent surgical delays.

While based here, PreOp is truly rooted in Houston, and even more so with their latest news.

"We are happy and excited to say that we have landed our first medical pilot at an medical right here in town," Obi says.

RoundTrip

Cody Duty/TMC

RoundTrip has a solution to 3.6 million missed or postponed medical visits that happen annually that are inconvenient to hospitals and a major health risk to the population: Ride sharing.

The Philadelphia-based company enables all forms of transportation and puts the power in the hands of the medical institution. From ambulances to other medical vehicles, the company can optimize utilization of all vehicles to get patients to their appointments and even has a partnership with Lyft.

While completing the TMCx program, RoundTrip closed its Series A round of $5.14 million led by Virginia-based Motley Fool Ventures in April. The funds will be used for expansion.

"Now we have all this new money to expand really rapidly. Texas, we're coming for you, whether you're ready or not," says Jackson Steeger, account supervisor.

Meru Health

Photos via meruhealth.com

Meru Health is also one of the 2019 TMCx Digital Health companies that has raised money while in the program. Palo Alto, California-based Meru completed a $4.2M raise in April 2019. The round was led by San Francisco-based Freestyle Capital.

Access to mental health professionals is increasingly more difficult, so Meru Health has created a low-cost digital clinic that offers an app-based treatment program from licensed therapists. Kristian Ranta, CEO and founder, while not yet providing specifics, that they aren't done in Texas.

"I'm happy to say there's some good stuff brewing here in Texas for us. More to follow," says Ranta.

Cloud 9

Photo via cloud9psych.com

Mental health is a key contributing factor in the legal system cycle, but it doesn't have to be Liz Truong, co-founder of Cloud 9. Better educating officers and providing them with mental health resources is the best way to get them out of the hospitals and court rooms and back out in the field to protect the city.

While some police departments have instituted ride-along programs with mental health professionals that have showed success, it's expensive for the police department and risky for those professionals. Cloud 9 has created a digital solution.

"We proved this works in the Harris County Sheriff's office right here in Houston," says Truong. "Officers reported that 97 percent of Cloud 9 care was superior or equal to their current program and showed an immediate 632 percent return on investment for our customers in the same budget cycle compared to what they were already spending."

Truong also says they have other local customers they are working with, including the Harris County Health Department.

Axem Neurotechnology

Photos via axemneuro.com

Recovering stroke patients need rehabilitation to get back to 100 percent, but getting patients into the facility is challenging and at-home compliance is hard to track.

Canadian company Axem Neurotechnology has a solution. With their external device and mobile application, physical therapists can track progress and communicate with patients remotely.

"When we talk to rehab professionals, they are excited about what we're doing," says Tony Ingram, CEO and co-founder. "That's why we have leading institutions in both Canada and the U.S. onboard for clinical trials — this includes TMC's own TIRR, which is consistently ranked in the top five rehab centers in the U.S. We're collecting core baseline data in the most diverse city in the country."


Correction: A previous version of this article said Oncora's partnership with MD Anderson was formed during the TMCx program, when the partnership began in 2017.

Ad Placement 300x100
Ad Placement 300x600

CultureMap Emails are Awesome

Air taxi network to land in 'Texas triangle' of Houston, Austin, DFW next year

taking flight

San Jose, California-based aerospace company Archer Aviation is bringing its air-taxi system to the “Texas triangle” of Houston, Austin and Dallas-Fort Worth.

Currently, the planned zero-emission electric air taxi networks will use Archer’s Midnight air taxi to “turn 60- to 90-minute drives to major airports, business districts and major destinations into 10- to 20-minute flights,” the company said in a news release. Archer plans to begin flights in the Texas triangle next year.

The Midnight air taxi is an all-electric vertical takeoff and landing (eVTOL) aircraft. It can carry four passengers and a pilot and is designed for consecutive flights of about 20 miles.

Archer cites the Texas triangle as one of the busiest and fastest-growing “megaregions” in the country due to its proximity to coastal regions, major airports, and a number of business districts.

Archer Chief Commercial Officer Nikhil Goel described the air taxi experience to CW Houston as “100 times quieter than a helicopter for the price of an Uber Black.” He added that the air taxis are a combination of a helicopter, a small airplane and a drone.

In Houston, Archer’s air taxi network will aim to connect George Bush Intercontinental, William P. Hobby and Sugar Land Regional Airport with downtown destinations, including the Thompson Hotel helipad, and Galveston.

In Austin, it plans to link the city's Austin-Bergstrom International Airport and Austin Executive Airport with the F1 Circuit Helipad at the Circuit of the Americas. Archer debuted its Midnight aircraft at the F1 Prix in the Fan Zone and the F1 Paddock at Austin’s Circuit of the Americas. The Dallas-Fort Worth network is slated to include Dallas-Fort Worth International Airport, Dallas Love Field, Addison Airport, Arlington Municipal Airport, Fort Worth Meacham International Airport and Perot Field Fort Worth Alliance Airport, plus major business hubs like Frisco Station.

“Texas is setting the bar for America’s leadership in the next generation of aviation,” Adam Goldstein, founder and CEO of Archer Aviation, said in the release. “Our planned networks will make the benefits of electric air taxis real for Texans — trading hours in traffic for minutes in the air, while connecting the biggest airports, business districts and sporting hubs in ways that America’s largest megaregion needs to grow.”

Archer is working with state and local partners to develop charging infrastructure and plans to pursue Texas operations through the White House’s eVTOL Integration Pilot Program, according to the release. It recently completed its "No Roads" flight tour, which included multiple flights over the San Francisco Bay, and flew to seven cities over three days.

5 Houston deep tech startups pushing the boundaries of their industries

meet the finalists

Houston has long been at the forefront of innovation, from NASA’s Johnson Space Center to its startup ecosystem using technology to disrupt industries.

As part of the 2026 Houston Innovation Awards, our Deep Tech Business category will honor an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics and space sectors.

Five deep tech companies have been named finalists for the 2026 award.

Read more about these businesses, their founders and their breakthrough technologies below. The 2026 winners will be announced on InnovationMap.com in mid-November.

Casimir

Battery tech startup Casimir develops semiconductor chips that produce continuous electrical power straight from the quantum vacuum, without the need for a battery, cord or external charge source. The company is targeting commercialization for its first-generation MicroSparc chip by 2028.

Harold “Sonny” White founded Casimir in 2023 after nearly two decades at NASA. The company emerged from stealth with a $12 million seed round in 2026. It was also awarded an STTR Phase I contract from the U.S. Space Force's SpaceWERX to support the development of the company's solid-state generator for potential use by the Department of the Air Force earlier this year.

FocisAI

Artificial intelligence startup FocisAI helps refinery owner-operators unlock actionable insights from 3D scans and images.

FocisAI was founded by CEO Tyler Wooten, COO Colin Snell and CTO Kyle Snell in 2026. It is a member of Greentown Labs and launched a seed round in September, which is expected to close by the end of the year, according to the company's application. It has rolled out 10 pilot programs and is looking to move into recurring, facility-scale deployments and scale its team in Houston this year.

Machine Saver Inc.

Industrial tech startup Machine Saver Inc. builds wireless and wired vibration and proximity sensors to tell heavy industry when a machine is about to fail. The company's technology runs on an 8-plus-year battery life and helps operators reduce downtime, improve maintenance and extend equipment life.

Machine Saver was founded by CEO Colton Bach and Quentin Bach in 2013. Its customers and partners include Houston Methodist, Blue Bell, Genemco, as well as energy and heavy industry, food and beverage, and cold chain companies, according to its application. The company is raising a Series A.

Square Robot

Energytech startup Square Robot develops and operates submersible inspection robotics that inspect aboveground storage tanks while they remain in service. The robots reduce downtime and costs, improve worker safety and limit hydrocarbon emissions.

Square Robot launched its Houston office in 2019 and closed a Series B in 2025. It plans to complete its first U.S. Navy demonstrator tank in November and is also developing real-time inspection software.

Venus Aerospace

Spacetech company Venus Aerospace is developing a high-thrust rotating detonation rocket engine (RDRE) that replaces the subsonic combustion used in conventional rocket engines. The RDRE is a compact, simpler engine that can deliver up to 15 percent greater efficiency for defense and space applications. It completed its first U.S. flight test of the engine last summer.

Venus Aerospace was founded in 2020 by CEO Cassie Duggleby and CTO Andrew Duggleby. It raised a $20 million Series A in 2022 and $42 million Series A2 in 2025. It closed a $91 million Series B earlier this year and expanded its leadership team. The company is working toward longer-duration and higher-thrust testing and advancing its flight program.

Houston leads U.S. with the biggest surge in millionaire renters

Rent Report

The number of millionaire renters and homeowners in the U.S. has surged over the last five years, and Houston has soared ahead of the rest with the largest growth rate among these affluent renter households.

Houston leads the nation with the No. 1 increase in millionaire renters from 2020 to 2024, a new RentCafe study found. The number of these wealthy households increased from 18 to 232 over the last five years, representing a 1,189 percent growth rate.

"The pandemic accelerated the shift as remote work pushed the wealthy to relocate to lower-tax metros like Houston, where millionaire renters grew 13-fold, versus 3.9-fold for owners," the report said. "Granted, 232 households is still a tiny fraction of the Houston metro’s roughly 2.7 million households, but the growth rate far outpaces any other major metro."

Nationwide, the number of millionaire renter households grew 229 percent from 2020 to 2024, outpacing the 193 percent growth rate among millionaire homeowners.

Dallas was the only other Texas metro to crack the top 10. The number of millionaire renter households in North Texas has more than quintupled, from just 30 in 2020 to 165 in 2024. That represents a growth rate of 450 percent, which — surprisingly — is only the eighth highest nationwide.

But when it comes to the largest populations of millionaire renters, New York City and San Francisco still lead the way. New York claimed the No. 1 spot with nearly 7,300 millionaire renters living in the city in 2024. Houston ranked 12th on that list.

Elsewhere in Texas, Austin and Dallas ranked as the 16th and 17th, respectively, for the largest population of millionaire renters. There were 206 millionaire renters living in Austin in 2024, and 165 in Dallas.

This is who the typical millionaire renter is
The report also revealed a surprising statistic about the typical millionaire renter in the U.S. — a lot of them are millennials working in "white-collar, high-earning fields."

"Nearly half (49 percent) of millionaire renters are Millennials, and the number of affluent Millennial renter households surged 392 percent during the five-year period," the report said. "Gen X follows with 33 percent of millionaire Gen X households renting after increasing by 147 percent."

The report continued, "Although Gen Z still represents a small share of millionaire renters (just 2 percent of the total), no generation has expanded faster: Gen Z millionaire renter households leaped from fewer than a dozen to more than 400 — a tiny cohort today, but one that was virtually nonexistent five years ago."

The top three most common professions for millionaire renters are chief executives, software developers, and managers, the report additionally found. In Houston, the surge of wealthy newcomers are mostly executives, professional athletes, and entertainers.

"These roles tend to generate steady, substantial income without necessarily tying workers to one location, making renting a practical fit, rather than a financial necessity," the report said.

Hotspots for millionaire homeowners
In RentCafe's separate list comparing the top 10 most popular U.S. metros for millionaire homeowners, Houston ranked 12th nationally with 4,374 millioniare homeowners living in the metro as of 2024. These wealthy Houstonians are most likely working as chief executives, physicians, managers, and lawyers and judges.

Houston has already proven to be a hotspot for millennial homebuyers, and the latest RentCafe data says millennials make up 19 percent of all millionaire homeowners in the U.S. Gen Xers and Baby Boomers still maintain the largest shares of millionaire homeowners nationwide, at 45 and 33 percent, respectively.

Dallas (No. 10) and Austin (No. 20) also appeared among the hottest metros for millionaire homeowners.

Only one Texas city appeared among RentCafe's list of the 20 fastest-growing metros for millionaire homeowners: College Station ranked 13th nationwide with a growth rate of 1,329 percent. From 2020-2024, the number of millionaire homeowners residing in College Station grew from 14 to 200.

---

This article originally appeared on CultureMap.com.