Memory alloy C ring and implanting and taking-out device thereof

Abstract

The invention discloses a memory alloy C ring and an implanting and taking-out device thereof. The C ring is composed of a beam, two clasping claws and two oblique shoulders. The implanting and taking-out device comprises a lead screw, a frame, a sliding block, a screw rod, a left hook, a right hook and a knob. The memory alloy C ring is convenient to implant due to the small size and will not injure ribs due to the gentle strength; the distance between the two hooks of the implanting and taking-out device of the C ring can be adjusted, C rings of different specifications can be quickly and conveniently arranged on a funnel chest orthopedic plate and the ribs in a clasping mode, the C rings recover to a preset C shape at the body temperature after being implanted in the body, and thus fixation of the orthopedic plate and the ribs is achieved without additional suture fixation; when it is needed to take out the product, the C rings do not need to be cooled, and the C rings of differentspecifications can be easily and quickly taken out through a small incision and operation space by means of the implanting and taking-out device, so that it is easy and fast to implant and take out the orthopedic plate, and the operation time is greatly shortened.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a memory alloy C-shaped ring and a device for taking it out. Background technique [0002] Pectus excavatum is a depression and angle of the sternum and the lower costal cartilage connected to it toward the spine, forming a funnel-shaped depression of the anterior chest wall centered on the junction of the xiphoid process of the sternum. It is the most common deformity in the chest wall deformity, accounting for all chest wall deformities. More than 90% of. In the 1990s, the new minimally invasive technique of NUSS correction for pectus excavatum came out, that is, the pectus excavatum orthosis was implanted into the patient’s body, and the patient’s sunken sternum was supported by the orthosis, and the pectus excavatum orthosis was taken out in about two years to achieve the treatment of pectus pectus excavatum. patient's purpose. This method has less trauma, simple operation, a...

AI Technical Summary

Problems solved by technology

The fixed piece of the existing pectus excavatum orthosis needs to be sutured and fixed. When it is implanted in the body and taken out after treatment, the assembly and disassembly of the fixed piece and the orthopedic plate are difficult, requiring a large operating space, and the surgical incision is large and the operation time is long. Longer, which increases the difficulty of the operation and the pain of the patient

[0004] At the same time, the Chinese patent No. ZL201620299677.4 discloses a kind of "memory alloy encircling clavicular bone set extraction tool" which is suitable for the extraction tool of memory alloy clavicle bone set; While the ends can be stretched together, the operation is simple and the force is small; however, due to the characteristics of the clavicular bone setter, this type of extraction tool neither needs nor can change the distance between the support points of the extraction hooks, which makes the distance between the extraction hooks cannot be increased. Amplitude adjustment makes it difficult to apply to C-shaped rings that require multiple models; and the quality of this extraction tool is concentrated at both ends of the tool, which requires a long familiarization process when using it, and it takes time to practice to achieve proficient operation

Images