Cartilage particle harvesting device

Abstract

The invention discloses a chondroconia obtaining device, and belongs to the technical field of medical apparatuses and instruments. The chondroconia obtaining device comprises a grinding drill for cutting chondroconia, a collecting system for collecting the chondroconia, a motor for driving the drill to rotate and a negative pressure protection sleeve installed on the grinding drill in a sleeving mode; a spherical or taper cutting head is arranged at the front end of the grinding drill, and a grinding drill rod is arranged at the back end of the grinding drill; wedge-shaped sawtooth blades which are spirally distributed are arranged on the surface of the cutting head, an annular particle channel is formed by the inner surface of the negative pressure protection sleeve, and the outer surface of the grinding drill rod and the closed end of the negative pressure protection sleeve. The collecting system comprises a negative pressure device which is arranged outside the negative pressure protection sleeve and can generate attraction force on the particle channel and a collector which is communicated with the particle channel and is used for collecting the chondroconia. By means of the chondroconia obtaining device, preparing and collecting of the chondroconia can be completed at a time, the time is saved, the efficiency is improved, it is guaranteed that the chondroconia ranges from 100 micrometers to 150 micrometers, the viability of chondrocyte in the chondroconia is high, and the cracking multiplication capacity is high.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for obtaining cartilage particles. Background technique [0002] Articular cartilage defects are common in clinical practice. According to statistics, more than 60% of knee arthroscopic surgery patients are accompanied by cartilage defects, of which 42% are focal hyaline cartilage defects, that is, the depth of the defect does not exceed the calcified cartilage layer, and the defect area is 2-4cm 2 between. Since hyaline cartilage has no blood vessels, nerves, and lymphatic system, its natural repair ability is low, and defects with a diameter of more than 4mm can hardly be completely repaired. If left untreated, the damage can progress and lead to arthritis, painful, swollen, deformed joints. For this kind of cartilage defect, the traditional treatment strategy is to use microfracture method to exude blood from the bone marrow, and use the mesenchy...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the patent of the present invention is to develop a device for obtaining autologous cartilage particles to solve the technical problems of autologous cartilage particles. Using this device can efficiently obtain cartilage particles with a particle size of 100-150 μm, and at the same time minimize the production process of cartilage particles. Mechanical injury of cells to ensure the proliferative activity of chondrocytes in cartilage microparticles

At the same time, it solves the problems in the existing technology that the particle size is difficult to control, the labor intensity is high, and the proliferative activity of chondrocytes is low.

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