Puncture locating system applicable to meniscus suture

Abstract

The invention provides a puncture locating system applicable to meniscus suture. The puncture locating system comprises a puncture needle (1), an optical fiber force sensor (2), a cavity (3), a near-end solenoid coil (4) and a far-end solenoid coil (5), wherein the optical fiber force sensor (2) is arranged on the tube wall at a far end part of the puncture needle (1), and iron powder is arranged in the cavity (3); the near-end solenoid coil (4), the cavity (3) and the far-end solenoid coil (5) are arranged sequentially. When the optical fiber force sensor detects that the far end of the puncture needle reaches a soft tissue interface, the iron powder is attracted to the near end and the far end of the cavity alternately, so that density distribution in the cavity is changed alternately, the far end part of the puncture needle in an ultrasonographic image is obviously different from other static parts, and the fact that the far end of the puncture end is located in the interface of the soft tissue at the moment can be known.

Description

technical field [0001] The present invention relates to puncture positioning, in particular, to a puncture positioning system suitable for meniscus suture. Background technique [0002] Meniscus tear is a relatively common sports injury caused by external torsional force. The tear is usually difficult to heal. Once diagnosed, it should be treated in time according to the injury. Currently, meniscus plasty or meniscus suture by arthroscopic minimally invasive surgery is the main treatment for meniscal tears. [0003] In the process of suturing the meniscus in the joint cavity, the suture needle accurately passes through the meniscus tissue from the meniscus tear and reaches the outside of the joint capsule, which will affect the speed and success of the entire operation. At present, the process of puncture and suture of the meniscus from the inside to the outside is blind puncture, which basically depends on the feel of the puncture needle used by the surgeon at the soft tis...

AI Technical Summary

Problems solved by technology

The traditional ultrasonic puncture navigation mainly adopts the guiding device method. This technology is relatively mature, but the angle between the direction of the puncture needle and the sound beam is still small, and the puncture needle is not parallel to the scanning plane, which easily leads to misjudgment of the position of the needle tip. Partial volume effect also often causes errors in monitoring and guidance, and the judgment of the location of the lesion largely depends on the experience of clinicians and other shortcomings, which can easily lead to puncture errors, trauma and complications

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