A Novel Successive Suturing Device for Laparoscopic Surgery.

Suturing is one of the more tiresome and difficult tasks during laparoscopic surgeries. To cope with this problem, we aimed to develop a novel successive suturing device. A novel needle holding and locking mechanism is proposed to transfer the needle between the upper and bottom jaws.

Vision-based variable impedance control with oscillation observer for respiratory motion compensation during robotic needle insertion: a preliminary test.

Background: To reduce the radiation exposure of patients and physicians during needle-based procedures, robotic needle insertion systems have been widely developed. However, during robotic needle insertion, the respiratory motion of the patient can cause serious injury.

Methods: A vision-based variable impedance control algorithm was introduced to compensate for the respiratory motion.

A novel semi-automatic snake robot for natural orifice transluminal endoscopic surgery: preclinical tests in animal and human cadaver models (with video).

Background And Study Aims: Natural orifice transluminal endoscopic surgery (NOTES) is an emerging surgical technique. We aimed to design, create, and evaluate a new semi-automatic snake robot for NOTES.

Materials And Methods: The snake robot employs the characteristics of both a manual endoscope and a multi-segment snake robot.

Development of biopsy gun for aspiration and drug injection.

Tumor samples are required for pathological examinations, and different instruments are generally used to obtain samples of different types of tumors. Among the many methods available for obtaining tumor tissues, gun biopsy is widely used because it is much simpler than incisional biopsy and can collect many more samples than aspiration biopsy. However, conventional biopsy guns cannot simultaneously perform biopsy aspiration, bleeding prevention, and marker injection.

Percutaneous navigation surgery of osteoid osteoma of the femur neck.

Surgery on benign bone tumors such as osteoid osteoma does not necessarily require bone exposure through a surgical incision. In most reported cases of the osteoid osteoma resection through computer-assisted surgery, registration and surgery were performed by exposing the bone. We have succeeded in performing percutaneous registration and navigated burr excision of the osteoid osteoma using computer-assisted navigation.