Surgical navigation system and method for determining needle insertion depth of tip of medical instrument

• Main Authors: SONG CHENGQIAN, TANG YUNXIAN, YE ZEQUN, CAI GUANGJIE
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2023
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention discloses a surgical navigation system and a method for determining the needle insertion depth of the tip of a medical instrument. The system comprises a mechanical arm and a surgical instrument, and the surgical instrument is connected to the tail end of the mechanical arm through a sleeve; the first dynamic reference, the second dynamic reference and the third dynamic reference are fixedly arranged on the mechanical arm, the surgical part of the patient and the surgical instrument respectively; the imaging equipment is used for acquiring a medical image of a surgical site before an operation; the stereo camera is used for collecting images of the image equipment, the first dynamic reference, the second dynamic reference and the third dynamic reference; and the processing equipment is used for determining the relative position relation between the tip of the surgical instrument and the third dynamic reference, determining the real-time tip position of the surgical instrument according to the re