The invention of the balloon-expandable stent
Witness History28 Loka 2025

The invention of the balloon-expandable stent

An estimated 2 million stents are implanted into people’s hearts around the world each year – making it one of the key treatments for heart disease.

The treatment was invented by Argentinian doctor Julio Palmaz, who credits a piece of metal being left by a construction worker in his home as inspiration for the structure of the stent.

Collaborating with a US Army cardiologist and getting funding from the owner of a fast-food chain and a pharmaceutical giant; the coronary stent was approved for use in human beings in the 1990s.

Julio Palmaz speaks to Tim O’Callaghan about his invention.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.

(Photo: Julio holding a stent. Credit: Julio Palmaz)

Jaksot(2000)

The longest musical composition

The longest musical composition

On 31 December 1999, a piece of music started playing in a lighthouse on the River Thames in east London. It’s called Longplayer, and it’s set to keep going, without repeating, until the year 2999. It...

31 Joulu 202510min

Radio Free Europe

Radio Free Europe

Seventy-five years ago, Radio Free Europe started broadcasting news to audiences behind the Iron Curtain.It initially broadcast to Bulgaria, Czechoslovakia, Hungary, Poland and Romania and programmes ...

30 Joulu 20259min

SMS: The invention of text messaging

SMS: The invention of text messaging

In October 1984, as the market for mobile phones was just opening up, one man decided it would be useful if the new technology could be used to send and receive short, electronic messages.But colleagu...

29 Joulu 202510min

Creating the board game Catan

Creating the board game Catan

In 1995, Klaus Teuber’s board game Catan launched in Germany. The board is made up of hexagonal tiles, and it's a game about strategy and collecting resources.It's since sold over 40 million copies an...

26 Joulu 202510min

Tamagotchi is born

Tamagotchi is born

The Tamagotchi was first released in Japan in 1996 after it was developed by Akihiro Yokoi and his colleagues at his toy development company.Measuring just a few centimetres long, the egg-shaped digit...

25 Joulu 20259min

How the hoverboard was created

How the hoverboard was created

It was Back to the Future II that made a generation of children dream of travelling by hoverboard.In the 1989 film, the hero Marty McFly escapes from his arch nemesis Biff by jumping on a flying skate...

24 Joulu 202510min

Inventing Play-Doh

Inventing Play-Doh

In 1956, one of the world’s most beloved children’s toys went on sale for the first time, but its origins were surprising.The modelling clay had started out as a household cleaning product. In the day...

23 Joulu 202510min

The invention of Jenga

The invention of Jenga

It's just over 30 years since the brick game was introduced to the world at a department store in London. Made of 54 wooden blocks stacked into a tower in rows of three by three, each player takes a t...

22 Joulu 202510min

Suosittua kategoriassa Yhteiskunta

olipa-kerran-otsikko
siita-on-vaikea-puhua
i-dont-like-mondays
gogin-ja-janin-maailmanhistoria
kolme-kaannekohtaa
poks
antin-palautepalvelu
aikalisa
kaksi-aitia
sita
yopuolen-tarinoita-2
mamma-mia
rss-palmujen-varjoissa
rss-murhan-anatomia
rss-ootsa-kuullut-tasta
meidan-pitais-puhua
loukussa
rss-nikotellen
ootsa-kuullut-tasta-2
lahko