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...

Examples

Embodiment Construction

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Such as figure 1 As shown, it includes a drill bit 1 for cutting cartilage particles, a collection system for collecting cartilage particles, a motor 5 that drives the drill bit 1 to rotate at high speed, and a negative pressure protective sleeve 2 set on the drill bit 1. The front end of the drill bit 1 It is a spherical or conical cutting head 3, and the rear end is a grinding drill rod 4. The surface of the cutting head 3 is provided with a wedge-shaped serrated blade 16 arranged in a spiral, that is, the thickness of the wedge-shaped serrated blade 16 is determined by the cutting head 3 and the grinding drill rod. 4 to the front end of the wedge-shaped sawtooth blade 16 gradually decreases to form a cutting portion to cut the cartilage, and the sawtooth 21 also has a cutting effect on the cartilage to further reduce the cartilage...

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...

Examples

Embodiment Construction

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Such as figure 1 As shown, it includes a drill bit 1 for cutting cartilage particles, a collection system for collecting cartilage particles, a motor 5 that drives the drill bit 1 to rotate at high speed, and a negative pressure protective sleeve 2 set on the drill bit 1. The front end of the drill bit 1 It is a spherical or conical cutting head 3, and the rear end is a grinding drill rod 4. The surface of the cutting head 3 is provided with a wedge-shaped serrated blade 16 arranged in a spiral, that is, the thickness of the wedge-shaped serrated blade 16 is determined by the cutting head 3 and the grinding drill rod. 4 to the front end of the wedge-shaped sawtooth blade 16 gradually decreases to form a cutting portion to cut the cartilage, and the sawtooth 21 also has a cutting effect on the cartilage to further reduce the cartilage...

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