In-vitro magnetic anchoring system for magnetic anchoring surgical instrument

Abstract

Disclosed is an in-vitro magnetic anchoring system for a magnetic anchoring surgical instrument. The in-vitro magnetic anchoring system comprises a permanent magnet set, a magnetic shielding case and a pushing device. The permanent magnet set is of a section type structure and is formed by stacking a plurality of cylinder sub magnets which are completely the same in the axial direction. The magnetic shielding case enables an external magnetic field generated by the permanent magnet set to be constrained in the long axis direction of the permanent magnet set, so that the intensity of the magnetic field around the magnetic shielding case is weakened. The pushing device helps the permanent magnet set to go in and out of the magnetic shielding case. The in-vitro magnetic anchoring system can further comprise support ring devices, the support ring devices can be fixed at any position on the side face of the magnetic shielding case through positioning screw rods and be connected with the magnetic shielding case through connecting nuts on the support ring devices, and accordingly two in-vitro magnetic anchoring system bodies can be combined. According to the in-vitro magnetic anchoring system for the magnetic anchoring surgical instrument, magnetic force can be adjusted according to the thickness of the abdominal wall of a patient, the interference to other surgical instruments by the permanent magnets in the system can be reduced, the mutual interference between the in-vitro magnetic anchoring system bodies can further be resisted, collaborative matching of a plurality of in-vitro magnetic anchoring system bodies can be achieved, and the in-vivo locating and navigation requirements of a special magnetic anchoring surgical instrument are met.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, in particular to an in vitro magnetic anchoring system for magnetically anchoring surgical instruments. Background technique [0002] The transumbilical single-port laparoscopic surgery (LESS) developed in recent years is the result of surgeons’ pursuit of ultra-minimally invasive surgery. The surgical scars will be covered by the folds of the umbilical foramen, which greatly satisfies patients’ expectations for postoperative cosmetic effects. Pursue. However, in the LESS technique, the surgical instruments placed in the abdominal cavity are concentrated in a "single hole", which is not conducive to the formation of the "operating triangle", and at the same time, mutual interference between instruments will inevitably occur. These operational difficulties have seriously hindered the promotion and application of LESS technology. The interaction between the magnets is realized in the ...

AI Technical Summary

Problems solved by technology

However, in the current research and development process of magnetic anchoring surgical instruments, due to the lack of awareness that the difference in the abdominal wall of patients will have a significant impact on the magnetic force, the design of the external magnetic anchoring system is often composed of simple external magnets with fixed specifications: On the one hand, When the patient is obese, the magnetic force will be insufficient and adverse events will occur; on the other hand, when the patient is thin, the magnetic force will cause damage to the abdominal wall of the patient.

In addition, the current design of the external magnetic anchoring system does not realize that the magnetic field generated by the external magnet will significantly interfere with other surgical instruments and external magnets, thereby affecting the normal surgical operation

These deficiencies make it impossible for magnetically anchored surgical instruments to achieve good positioning and navigation in the abdominal cavity, thus limiting their role in promoting LESS technology

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