Degradable and absorbable magnesium alloy rib fracture fixing plate and fixing instrument system

Abstract

The invention relates to a degradable and absorbable magnesium alloy rib fracture fixing plate and a fixing instrument system. The degradable and absorbable magnesium alloy rib fracture fixing plate is made of biodegradable Mg-Nd-Zn-Zr magnesium alloy, is of a rectangular sheet structure, is 1.0-2.8 mm thick, and is provided with at least two rows of fixing holes, and the upper edge and the loweredge of the degradable and absorbable magnesium alloy rib fracture fixing plate are each provided with a row of arc-shaped notches and further provided with through holes or strip-shaped grooves. Thefixing instrument system comprises a rib threading hook and the fixing plate, wherein the rib threading hook is provided with a handle and a crochet hook, and the crochet hook comprises a crochet hookrod and a U-shaped crochet hook head connected with the crochet hook rod in a 90-degree mode. The rib fracture fixing device can achieve the effects of fixing rib fractures and promoting healing of the rib fractures and can preserve the compliance of ribs or chest walls to the maximum extent to relieve local foreign matter discomfort and tissue reaction; operation injuries are reduced, surgical operation is easy and convenient, the current minimally invasive surgery principle is better met, and the needed cost is reduced compared with that of foreign similar products.

Description

Technical field [0001] The invention relates to a medical surgical implantation instrument, in particular to a degradable and absorbing magnesium alloy rib fracture fixing plate and a fixing instrument system. Background technique [0002] Rib fractures are the most common chest trauma, and tens of thousands of patients undergo surgical treatment of rib fractures every year. The products related to rib fracture fixation are: 1. Imported products: A. Absorbable products: made of PLA and other polymer materials. If the two ends are pointed, the rib intramedullary fixation nail can be inserted into the two broken ends of the rib for fixing. There are also flat, long plate-shaped, slightly longitudinally curved, and fixed holes along the longitudinal axis. The ribs are drilled and fixed on the fractured ribs with absorbable screws or sutures to play the role of rib fracture fixation. The absorbable rib fixation plate (this product has not yet entered the Chinese market). B. Non-ab...

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Problems solved by technology

[0003] Absorbable rib intramedullary nails have disadvantages such as difficult installation, poor fixation effect, and high cost, and are rarely used in clinical practice.

Absorbable rib fixation plates have not yet entered the Chinese market, and have the same disadvantages as the imported titanium alloy rib fixation plates, such as complicated installation procedures, large damage, unsuitable for minimally invasive surgery, and high cost. In addition, metal products are not absorbable, There are disadvantages such as local foreign body sensation, possible allergies to the steel plate, and discomfort. Some patients need to be removed after surgery, so it is difficult to popularize and apply

Although the installation of domestic rib bone plate is easier than the imported plate, it needs to separate the rib and intercostal muscles, which will damage the periosteum and intercostal muscles of the ribs, affect the blood supply and regeneration of the ribs, and affect the healing of rib fractures. When the ribs are squeezed, the ribs will be deformed and cause new injuries or fractures. The metal surrounding the rib fixator is wider and thicker, and the hardness of the metal is higher, which reduces the compliance of the local chest wall and has a relatively greater impact on breathing. Local foreign bodies, The discomfort is stronger, so some patients strongly require another operation to remove the foreign body

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