General · EdgepediaOctober 10, 20263 min read

Ryūzō Torigata

Ryūzō Torigata (鳥潟隆三) was a Japanese physician, professor emeritus of Kyoto Imperial University, and president of the Japan Surgical Society, remembered for advocating the normal-pressure thoracotomy (平圧開胸術) in 1925 and for founding an immune research institute. He is identified as a surgeon and immunologist: the National Diet Library authority record cites his Torigata Surgical Clinical Lectures (鳥潟外科学臨牀講義), and the digitized papers identified here from 1932 to 1938 are surgical clinical lectures.¹^•²

Key fact	Detail
Identity	Medical doctor, professor emeritus of Kyoto Imperial University, president of the Japan Surgical Society¹
Dates	1877–1952 per Odate City's English page; 1878–1952 per the NDL authority record; 1887–1952 per Odate's tourism page, an unresolved conflict¹^•²^•³
Study abroad	Bern University, Switzerland, 1912; research on serum bacteriology and the "Impedin theory"¹
Surgical contribution	Advocated the normal-pressure thoracotomy (平圧開胸術) in 1925, credited with markedly improving Japanese surgical operations¹^•³
Immunology	Founded the Torikata immune research institute with an affiliated hospital and invented the external medicine "Koktigen" (コクチゲン)¹
Publications	Japanese-language clinical lectures, 1932–1938, co-authored with named collaborators, digitized in IRDB
Commemoration	The former Torigata family residence and garden preserved as the Torigata Kaikan museum in Odate³

Life and education

Torigata was born in Hakodate, Hokkaido. He attended Oita junior high school and Daiichi High School in Tokyo before enrolling at Kyoto Imperial University on the advice of Kanō Jigorō (嘉納治五郎), the founder of judo and a noted educationalist.¹ In 1912 he went abroad to study at the University of Bern in Switzerland, where he researched serum bacteriology and advocated what his commemorative page calls the "Impedin theory."¹ On returning to Japan he established the Torikata immune research institute with an affiliated hospital and invented the external medicine Koktigen.¹

His academic standing is documented in his own publications: the 1932 paper records him as 教授医学博士, Professor and Doctor of Medicine.

Scientific work

The contributions credited to Torigata are surgical and immunological rather than physiological. In 1925 he advocated the normal-pressure thoracotomy, a technique the Odate pages credit with markedly improving Japanese surgical operations, and he led the Japan Surgical Society as its president.¹^•³

A local anecdote records that he sent vaccine from Osaka to his hometown when a typhoid fever outbreak spread there.¹

Publications and language

The digitized records identified here are Japanese-language clinical lectures co-authored with named collaborators, preserved in the IRDB repository:

腹部腫瘍及膽石症 (Abdominal Tumors and Cholelithiasis), 20 May 1932, with Jitsusaburo Nakata
中樞神經系統深部ニ於ケル先天性癒合障碍, 1 January 1933, with Chisato Araki (講師医学博士)
臨床講義：直腸癌 (Clinical Lecture: Rectal Cancer), 20 July 1935, with Shozo Shoyama
甲狀腺腫 (臨床講義) (Goiter), 1 July 1937, and 特發脱疽 (臨床講義), 1 March 1938, with Shiro Yamanaka

Comparison with contemporaries

The German-training model that shaped Meiji-era Japanese medical researchers is illustrated by his contemporary Sunao Tawara (田原淳, 1873–1952), a pathologist at Kyushu Imperial University who worked under Ludwig Aschoff at Marburg, published his roughly 200-page monograph on the cardiac stimulus conduction system in 1906, and received the Imperial Academy Prize (帝国学士院恩賜賞) in 1914 for the discovery.⁴ Torigata's 1912 study abroad at Bern fits the same pattern of Japanese physicians training in German-speaking Europe.¹^•⁴

References

Topic: Encyclopedia › Life and health › Life and health scientists › Medical and health researchers › Surgery and surgical researchers › Cardiothoracic and cardiovascular surgeons

Initially written Oct 10, 2026 · Edited: Oct 11, 2026; Oct 15, 2026; Oct 21, 2026

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