Puncture Positioning System for Meniscal Sutures

A positioning system and meniscus technology, applied in the direction of puncture needles, trocars, etc., can solve the problems of wrong judgment of needle tip position, volume effect monitoring and guidance errors, puncture errors, etc.

CN107019547BInactive Publication Date: 2019-05-10SHANGHAI TENTH PEOPLES HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-05-10
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

technical field

[0001] The invention relates to puncture positioning, in particular to a puncture positioning system suitable for meniscal suture. Background technique

[0002] Meniscus tear is a relatively common sports injury, mostly caused by torsional external force. The tear is usually not easy to heal. Once diagnosed, it should be treated in time according to the injury situation. Currently, minimally invasive arthroscopic meniscoplasty or meniscus suture is the mainstay of treatment for meniscus tears.

[0003] In the process of suturing the meniscus in the joint cavity, the speed and success of the entire operation will be affected by the precise penetration of the suturing needle from the meniscus tear through the meniscus tissue to the outside of the joint capsule. At present, the puncture of the meniscus from inside to outside is done blindly, basically relying on the hand feel of the puncture needle at the soft tissue interface and the rough estimation of the pu...

Examples

Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] A puncture positioning system suitable for meniscus suture provided according to the present invention, comprising a puncture needle 1, an optical fiber force sensor 2, a cavity 3, a proximal electromagnetic coil 4, and a distal electromagnetic coil 5; the distal part of the puncture needle 1 An optical fiber force sensor 2 is arranged on the tube wall of the puncture needle 1; A proximal electromagnetic coil 4 and a distal electromagnetic coil 5 are provided, wherein, in the direction from the p...