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Search: authors:"Ryoichi Nakamura"

4 papers found.
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Two-way least-incision transformable end-effector forceps for robot-assisted surgery

In laparoscopic surgery, smaller incisions produce good clinical results for patients. Therefore, there is a great need to develop thinner instruments for use in laparoscopic surgery. However, thinner instruments have smaller end effectors that limit the functionality of the instruments. To address this problem, we previously developed a new type of forceps that uses a least...

A neurosurgical navigation system based on intraoperative tumour remnant estimation

This paper proposes a method to intra-operatively visualize the process of tumour resection until complete resection is accomplished. A fuzzy connectedness method that is robust against image noises was used to identify the tumour position and volume. Based on the tumour segmentation results, the removed area and the residual tumour tissues were examined with reference to the...

Independent predictors of restenosis after percutaneous coronary revascularization in haemodialysis patients

Background. Percutaneous balloon angioplasty has become a well‐established and routine procedure for coronary revascularization of haemodialysis patients with coronary artery disease. However, the incidence of restenosis after balloon angioplasty is significantly higher in haemodialysis patients than in the general population. We performed a retrospective study comparing balloon...

Favourable long‐term outcome by repeated percutaneous coronary revascularization in diabetic haemodialysis patients

Background. Diabetic haemodialysis patients have a high prevalence of coronary events and very high mortality rates. Percutaneous coronary intervention has become a well‐established and routine procedure for coronary revascularization. This study investigated the long‐term outcome of multiple repeated interventions in diabetic haemodialysis patients with coronary artery disease...