Retractable brush for arthroscope

Abstract

The invention discloses a retractable brush for an arthroscope. The retractable brush comprises a brush head, a brush handle and a casing tube; the brush head is arranged at the front end of the brushhandle; the inner diameter of the casing pipe is greater than the outer diameter of the brush handle, the casing tube sleeves the brush head and the brush handle, and the length of the casing tube isgreater than or equal to that of the brush head. The retractable brush is convenient to operate. Compared with conventional planing cutter heads and radio frequency vaporization cutter heads, the retractable brush has the advantages that not only can diseased tissue on the surface of a joint be removed to the maximum extent, but also the cartilago articularis cannot be damaged, and convenience isprovided for the brush to get in or get out of a micro incision.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a retractable brush for arthroscopy. Background technique [0002] Thanks to the rapid development of arthroscopic minimally invasive technology and instruments, the indications for arthroscopic surgery are becoming more and more extensive, and the surgical effect is constantly improving. Many autoimmune diseases, such as rheumatoid arthritis, systemic lupus erythematosus, and ankylosing spondylitis, can cause synovial inflammation in different joints throughout the body. When such patients fail to respond to regular conservative treatment, they can be completely resected by arthroscopic surgery. Diseased synovial tissue to relieve symptoms and improve joint function. However, during the operation, it is often found that many diseased synovial tissues are attached to the surface of articular cartilage (such as Figures 9 to 11 shown); when conservative treatment of g...

AI Technical Summary

Problems solved by technology

However, during the operation, it is often found that many diseased synovial tissues are attached to the surface of articular cartilage (such as Figures 9 to 11 shown); when conservative treatment of gouty synovitis cannot relieve pain or joint dysfunction occurs, arthroscopic surgery is also required to clear the diseased synovium and urate crystals in the joint cavity, and a large number of white urate crystals will be found during the operation Urate crystals attached to the surface of articular cartilage; in addition, when intra-articular infection occurs after artificial joint replacement, arthroscopic surgery may also be required to clean the lesion. At this time, a layer of pseudomembrane covered by infection will be found during the operation on the prosthetic surface

All of the above situations need to remove the diseased tissue on the surface of the articular cartilage or joint prosthesis, and the more thorough and clean the removal, the more conducive to improving the postoperative effect, but the currently used removal tool is only a planer head (such as Figure 12 shown) and RF vaporization cutter head (such as Figure 13 As shown), the front end of the planing cutter head is divided into toothed and non-toothed, but both are relatively sharp, which will inevitably damage the smooth, fragile and difficult-to-regenerate articular cartilage or polished artificial joint prosthesis in the process of cleaning diseased tissue ; while the radio frequency vaporization cutter head will have a certain thermal effect on the cartilage when cleaning the lesion on the surface of the cartilage, and it is difficult to control the cleaning depth, and it is easy to damage the normal cartilage tissue below it while removing the lesion by vaporization

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