facts about Naomi L. Nakao inventor of The Nakao Snare™ in 1991.
AT A GLANCE:
Nakao, is a practicing gastroenterologist, company founder and inventor
of the Nakao Snare in 1991.
A passionate inventor, she
founded the Granit
Medical Innovations to provide a vehicle for taking her intellectual
property from idea to medical device. On
November 5, 1991 she filed an application for Surgical retrieval
assembly and related method, now known as The Nakao Snare™.
She also has medical inventions that are licensed to companies such as Ethicon,
ConMed, Wilson Cook and Stryker Corporation.
WHERE TO FIND
DID YOU KNOW?
||Naomi L. Nakao, MD, FACG
||January 13th, 1948 in Jerusalem, Israel
The Nakao Snare™ in 1991
trademark / named after inventor
instrument assembly for use in snare cauterization operations
comprises a tubular sheath member, a metallic cauterization loop,
and a metal wire operatively connected to the loop, the wire passing
longitudinally through the sheath.
5,201,740 (US) issued April 13, 1993
1961 Naomi L. Nakao moves to the United States
Medical Innovations was founded by Dr. Naomi Nakao, in New York City.
1991 November 5 files application for Surgical retrieval assembly and
1993 Patent granted April 13, 1993
2002 Approved for use and marketing by the U.S. Food and Drug
2006 The Nakao Snare Line, to be distributed by
ConMed Endoscopic Technologies beginning May
Nakao, Naomi L. Nakao, Naomi L. Nakao MD, Dr. Naomi L. Nakao,
Nakao Snare, Nakao Snare Line, conmed, inventor, biography, profile, history,
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Naomi Nakao, Associate Professor of Medicine at Beth
Israel Medical Center and the Albert Einstein School of Medicine, is a Board
Certified Gastroenterologist practicing in New York City. Dr. Nakao is an
active member in the American Society for Gastrointestinal Endoscopy (ASGE)
& the American College of Gastroenterology (ACG). A passionate inventor,
she has served on the ASGE Technology Committee, and is the current Chair of
the ASGE Invention Innovation Special Interest Group (II-SIG). This role has
enabled Dr. Nakao to form collaborative relationships with medical
innovators in the US and worldwide. She is deeply involved in the most
cutting edge research and development of medical technology with a strong
predilection toward interventional gastrointestinal endoscopy.
Dr. Nakao has an avid interest in advancing women's
interests in Medicine. She has been an active member of the ACG Women's
Committee for the past 6 years. The Naomi Nakao Gender Based Research Award
is granted yearly at the National ACG Meetings for the best research paper
published about gender-related diseases and their treatment. A recipient of
the honorary title of Fellow of the American College of Gastroenterology,
Dr. Nakao has authored fourteen articles, and has 54 United States Patents
and patent-pending applications to her name.
Granit Medical Innovations was founded by Dr. Naomi Nakao, a board certified
gastroenterologist practicing in New York City. In 1989, Dr. Nakao and a
surgical colleague Dr. Peter Wilk were treating a young woman for a
postoperative leak after gastric bypass surgery for morbid obesity. The
patient's condition continued to deteriorate until she was too ill to be
operated on. “I wish there were a way to close the leak through an
endoscope. If only we had an endoscopic stapling device,” said Dr. Nakao. In
1991 Drs. Nakao and Wilk were granted the first patent ever issued for a
stapling device that would pass through a flexible endoscope.
Dr. Nakao went on to search for solutions that would address shortcomings in
medical devices. During a 20 year journey that resulted in 56 patents and
patent pending applications, she learned a great deal about the problems
that an inventor encounters. Granit Medical Innovations (GMI) was created in
order to provide a vehicle for taking Dr. Nakao's intellectual property from
idea to medical device. GMI has been achieving this objective through
collaborative alliances with medical equipment manufacturers, biomedical
engineers, FDA advisors, and distribution channels.
A company not encumbered by bureaucracy, GMI is in the business of bringing
new products to the market for a relatively small cost and in a
comparatively short period of time. A large portion of the Company's
resources is allocated towards development of flexible endoscopic surgical
devices used during transluminal surgery. These instruments are geared
chiefly toward bariatric surgery for the morbidly obese patient, and other
intra-abdominal operations to be performed through a natural orifice.
The Nakao Snare™ Line was invented in order to address
the problem of the lost polyp syndrome. Colonic polyps, precursors to colon
cancer, are removed during a colonoscopic procedure. Resected with a cautery
snare, they often roll into the colon necessitating a polyp search in order
to retrieve the specimen for pathologic evaluation. The rate of lost polyps
is 10-15% in the best of hands, a problem that is quite concerning: the
treatment for a cancerous polyp differs significantly from that of a benign
one. It is therefore crucial for the patient that every polyp be retrieved.
Because it is so important to examine every polyp for cancer cells, the
physician must often engage in a difficult and time-consuming polyp chase.
The additional time spent in search of the lost polyp adds to the procedure
increases risk and patient discomfort. In the worst case the polyp is never
found, and the prognosis and proper management of the patient remain
The Nakao Snare Line, to be distributed by
ConMed Endoscopic Technologies beginning May 2006, will offer three
different snares designed to address the “lost polyp syndrome”. The Nakao
Snare I is a double lumen snare, which houses a regular cautery snare in one
lumen and a retrieval basket in another. The cautery snare is used to resect
the polyp in the usual fashion. After the polyp is severed, without removing
the catheter from the working channel of the endoscope a second snare with
net is used to retrieve the specimen. The retrieving net is specially
designed to slide up and down the snare, gently cradling the delicate
specimen so that it may be delivered unharmed to the pathologist.
The Nakao Cautery Retrieval Snare cuts and retrieves the polyp in the same
maneuver. This device combines two loops constructed in a coplanar
configuration. The same delicate net described above is attached to the
lager of the two loops, while the smaller, inner loop constitutes the
cutting wire. The polyp is captured, cautery is performed and the severed
polyp falls into the net. Thus, both cutting and retrieval occur
simultaneously, eliminating the polyp chase altogether.
The Nakao retrieval Net is a retrieval net utilizing the delicate pouch
specially tethered to the inner wall of the catheter to enable its sliding
up and down the snare for proper positioning around the specimen. The Nakao
Green Net is utilized in cases wherein a very large polyp is resected in
several segments. The segmental resection is performed with a cutting snare,
leaving behind a number of pieces which are then harvested with the
The cutting snares may come in a thin mono-filament used for the smaller
polyps, and for cold polypectomy (polypectomy without cautery), and
retrieval nets come in small, medium and large sizes.
Women Inventors, A Class Act from The Great Idea Finder
Healthcare History from The Great Idea Finder
ON THE BOOKSHELF:
Why Aren't There More Women Gastroenterologists?
by Caron Schwartz Ellis / Download
Digital: 4 HTML pages / The Boulder County
If you've been dreading that five syllable screening test - colonoscopy
don't listen to your friends. They are going to tell you it's invasive,
embarrassing and that the worst part of all is the preparation. The truth is
it's easy. And once it's over you have a five- to 10-year reprieve before
you need another one.
ON THE WEB:
Dr. Nakao has authored fourteen articles, and has 54 United States Patents
and patent-pending applications to her name and is Chair of the
Invention Innovation Special Interest group of the American Society for
Gastrointestinal Endoscopy. Women Inventors, A
Granit Medical Innovations (GMI) was created in order to provide a vehicle
for taking Dr. Nakao's intellectual property from idea to medical device.
GMI has been achieving this objective through collaborative alliances with
medical equipment manufacturers, biomedical engineers, FDA advisors, and
distribution channels. Medical
inventions are currently licensed to companies such as Ethicon, ConMed,
Wilson Cook and Stryker Corporation.
Nakao Snare Line
The Nakao Snare™ Line was invented in order to address the problem of the
lost polyp syndrome. Colonic polyps, precursors to colon cancer, are removed
during a colonoscopic procedure.
Innovation Aids Polyp Removal
However, there is a simplified version of this procedure that decreases the
chance of losing the polyp. The Nakao-snare, developed by Naomi Nakao, MD,
of New York, combines the snare and the net. Article by Kelli M. Donley for
US FDA Review of Nakao Snare
Approved for use and marketing March 15, 2002. Requires Adobe Reader. PDF
WHERE TO FIND:
A global medical technology company that specializes in the development and
sale of products and services that allow our physician customers to deliver
high quality care and as a result, enhanced clinical outcomes for their
patients. The Nakao
Snare™ will begin distribution in May, 2006 through their
WORDS OF WISDOM:
"I don't just invent, I develop all my
inventions into a final clinical device, and only then license it for
distribution. I am therefore a well known novelty in the medical industry,
and have the large companies visiting me frequently. Some have called me A
POWERHOUSE." - Naomi L. Nakao, 2005
DID YOU KNOW?
Dr. Nakao has authored fourteen articles, and has 54
United States Patents and patent-pending applications to her name.
Dr. Nakao is a practicing gastroenterologist in
New York City and enjoys her patients very much.
Dr. Nakao is
married, and has one daughter Maya,
Dr. Nakao is featured on a video entitled Mothers
of Invention, which is distributed to high schools in the US.
- In the Gastroenterology profession, only
10% are women
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Reference Sources in BOLD Type.
This page revised October, 2005.
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