One balloon.
Every vessel in the body.
From a single inflation in a Zurich cath lab to hundreds of balloon geometries working across the entire body — the story of how one deceptively simple device rebuilt interventional medicine, and where it's headed next.
The spark that reopened cardiology
Three names carry the weight of this entire field. Their work, decades apart, is the reason a folded balloon can now travel to almost anywhere in the human body.
Charles Dotter's first move
A decade before coronary work began, Dr. Dotter performed the first angioplasty of any kind in a leg artery — proving a vessel could be reopened from the inside, without a scalpel.
Andreas Gruentzig's leap
Building directly on Dotter's work, Gruentzig performed the first balloon angioplasty on a human coronary artery, restoring flow to dying heart tissue and igniting a new specialty overnight.
A field left too soon
Gruentzig died in a plane crash before he could see the long-term outcome data on his own technique — but the revolution he started never slowed down.
Where "POBA" actually came from
The shorthand "Plain Old Balloon Angioplasty" wasn't a marketing line — it was coined almost in passing, in a conversation between Dr. Donald Baim of Harvard Medical School and Carl Simpson, the first employee at pioneering balloon company Advanced Cardiovascular Systems. Decades later, the phrase still anchors how the industry talks about the simplest form of the therapy.
One mechanism, six very different jobs
Inflate a controlled shape inside a controlled space — that's the entire premise. What changes from application to application is everything else: pressure, compliance, material, and geometry.
PTCA — plain old angioplasty
The original move: snake a catheter to a blockage, inflate briefly, restore flow, withdraw. Still the mainstay wherever a patient can't reliably stay on post-stent medication.
Stent delivery
Angioplasty alone often lets plaque regrow. Stent balloons apply broad, even pressure to seat a metal scaffold — now used well beyond the coronaries, into the airway and biliary tract.
Valvuloplasty & valve delivery
Balloons expand stenosed heart valves — and increasingly deliver the replacement valves themselves, entirely through a catheter, without opening the chest.
Textile-reinforced balloons
A braided fiber shell laminated over a thermoplastic bladder pushes burst pressure well past what a single-layer balloon can survive — at a real cost to flexibility.
Energy delivery & ablation
The same expanded balloon becomes a delivery platform for heat, extreme cold, radiofrequency, or laser light — used to deliberately destroy tissue, not save it.
Vascular occlusion
Sometimes the goal is the opposite of opening: a compliant balloon expands to block flow entirely, controlling bleeding or containing kidney-stone fragments.
Reinforcement in practice: braided vs. single-layer
A 26×40 braided balloon nearly triples the burst pressure of a same-class single-layer balloon, at a matched folded profile.
The levers engineers actually pull
Pressure class, compliance, hardness, and profile — four dials that, tuned together, decide whether a balloon can even do its job.
High pressure
Rated burst pressures reaching roughly 40 atmospheres, made possible by a braided reinforcement shell. Reserved for dilating highly calcified vessels that simply won't yield to lower pressure.
Material comparison
Filter by pressure class to see which polymers belong in the conversation.
| Material | Pressure | Compliance % | Hardness (Shore) | Profile (Fr) |
|---|---|---|---|---|
| PET | Ultra High | 3–7 | 70–85 | 1.5–3 |
| Nylon 11 | High | 3–9 | 70–80 | 1–3 |
| Nylon 12 | High | 3–9 | 70–85 | 1–3 |
| PEBA | Moderate | 4–150 | 25–74 | 2–4 |
| Polyurethane | Low | 10–300 | 25–70 | 6–20 |
| Multi-layer | High | 3–15 | 60–80 | 1–3 |
| Blends | Ultra High | 3–15 | 60–80 | 1–3 |
| PVC | Moderate | 4–100 | 35–60 | 4–8 |
| Hytrel | Moderate | 4–50 | 25–72 | 2–4 |
| Arnitel | High | 3–15 | 45–72 | 2–4 |
| NeuSoft | Low | 10–300 | 25–70 | 6–20 |
| Chronoprene | Low | 10–300 | 25–70 | 6–20 |
| Polyethylene | Low | 3–9 | 45–70 | 3–6 |
| UHMWPE | Ultra High | 2–5 | 25–65 | 2–4 |
Twelve ways to shape an end
Body shape, neck, and taper geometry are chosen against the anatomy, not the other way around.
Where else the balloon shows up
Every specialty below runs on the same four levers — pressure, compliance, material, geometry — tuned for a completely different part of the body.
Dr. Terry King
First transcatheter closure of an atrial septal defect using an experimental device.
Dr. Kurt Amplatz
A family of septal occluder devices that expanded treatment options for congenital defects.
Dr. Phillipp Bonhoeffer
First transcatheter pulmonary valve replacement, deploying a balloon-mounted tissue valve.
Dr. Alan Cribier
First clinical transcatheter aortic valve replacement (TAVR), using a similar balloon-assisted approach.
MitraClip® and beyond
A milestone that sparked investment in 30+ companies now developing balloon-based TMVR and TMVr systems.
Have an idea that needs its own balloon?
Freeway Medical works across the full design pipeline — mechanics, materials, dimensions, and shape — to take a concept from sketch to a manufacturable, testable device.
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