Device and method for welding biological tissue through double-beam laser

Abstract

The invention belongs to the field of laser medicine, and particularly relates to a device and method for welding biological tissue through double-beam laser. Comprising a first laser, a second laser, a walking mechanism, an imaging system, a temperature detection system, a workbench and a controller. A biological tissue to be welded is placed on the workbench, the power of the second laser is larger than that of the first laser, the walking mechanism controls the first laser and the second laser to move according to a control instruction of the controller, and the temperature detection system is used for monitoring the temperature of the biological tissue to be welded in real time and transmitting a signal to the controller. The imaging system is used for obtaining a three-dimensional image of the surface of the welded biological tissue and transmitting the image to the controller, and the controller controls the walking mechanism and the laser device according to the temperature and the three-dimensional image. According to the invention, the most suitable laser parameters can be freely combined according to different tissues of different parts of organisms, and low-damage and high-performance skin tissue laser welding is realized.

Description

technical field [0001] The invention belongs to the field of laser medicine, and in particular relates to a device and method for welding biological tissue by using a double beam laser. Background technique [0002] With the gradual improvement of the level of science and technology, surgical suture in medical treatment has also undergone a series of developments. Suture materials have changed from the most traditional needle thread suture to suture glue to absorbable suture thread, and suture technology has developed from the initial manual to mechanical suture. have undergone a step-by-step improvement. However, whether it is the change of suture technique or the development of suture material, the scarring after surgery is caused. Even if intradermal suture is used to avoid the "centipede-like" suture scar after suture, it is impossible to avoid the occurrence of postoperative scar. However, the emergence of laser suture technology will greatly improve this situation. T...

AI Technical Summary

Problems solved by technology

[0003] Laser welding adopts single-beam laser welding for biological tissues, which is prone to insufficient tissue bonding strength and may cause bleeding and exudate in the incision to crack the incision. Single-wavelength laser welding incision connects the wound gap by producing collagen fibers or proteins, but the strength is low. If More bleeding or exudate inside the wound will gradually soften the protein used for connection, destroy this cross-linking fusion, and make the incision crack

And the penetration ability of a single laser is single, and it is impossible to achieve full-layer welding, such as: CO 2 Infrared lasers such as Ho:YAG are easily absorbed by water and can generate heat deposition on the skin surface at 2-20um to fuse tissues, but they are only suitable for thin-layer wound welding and cannot achieve deep-seated welding; when using Nd:YAG laser with strong tissue penetration When performing skin welding, proper heat can be generated in the deep tissue to achieve the effect of deep wound welding, but there is damage to the superficial tissue

Therefore, there are great limitations in the use of single-wavelength lasers for tissue welding

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