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Prof. Yasuyoshi Hayashi (Japan)
Name: Prof. Yasuyoshi Hayashi (Japan)
History: Present position:  
1) Director  
Department of Ob/Gyn, 
Kawasaki Municipal Hospital 
2) Visiting Professor of Chinese Capital University of Medical Sciences ((Beijing) 
3) Visiting Professor of Xian Medical University (Xian)  
Personal clinical experiences  
Diagnostic hysteroscopies: more than 13764 cases from 1983 to 2003. 
Resectoscopic operations : 2541 cases performed from 1985 to April 2004, including 1893 cases of Submucous fibroid, 273 cases of Endometrial Polyps, 164 cases of Uterine Anomalies, 123 cases of Asherman Syndrome and 88 cases of Endometrial Ablation.  
 
Number of published papers ( first author ) : 89 
 
Contributions: 
1. Developed a small caliber diagnostic flexible hysteroscope in 1985 and a small caliber operating flexible hysteroscope in 1987 that enabled to perform hsyteroscopy without using a tenaculum, cervical dilatation and anesthesia. This development subsequently brought the effect of changing the whole world hsyteoscopes into small caliber instrument.  
2. first doctor to use ultrasound for monitoring hysteroscopic operation. 
3. first doctor to perform Roller ball endometrial ablation in 1988. 
4. Developed modified laparosocpic monitoring method for hysteroscopic operation in 1990. 
5. Developed modified cystoscopy to evaluate unilateral traumatic injury of the ureter during pelvic surgery in 1990. 
6. First doctor to describe sinking phenomenon of a deeply invasive submucous myoma during hysteroscopic procedures in 1998. 
7. Developed dissecting operative technique for hysteroscopic removal of submucous Myoma in 1999. 
8. Developed the following Lin instruments :  
a) for hysteroscopic operations  
1). myoma graspers, 2). tenaculum 3) dissecting loop 4). Speculum for operating flexible hsysteroscopy.  
b) for diagnostic flexible hysteroscopy  
1) hard type outer sheath 2) soft type outer sheath 3) Speculum for diagnostic flexible hysteroscopy.  
d) for operating flexible hysteroscopy  
1. giant biopsy forceps 2. giant grasping forceps 3. giant scissors forcesp 
These instruments facilitated the procedures of both diagnostic and operative hysteroscopies. 
Contact: E-mail: lin@kmh.gr.jp
   
   
 
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