Bone biopsy needle extractorTechnical field
The present invention relates to a kind of bone biopsy needle, be specifically related to a kind of bone biopsy needle extractor, belong to technical field of medical instruments.
Background technology
At present, bone biopsy needle of the prior art, its drawback takes in process that sclerotin is not easily from disconnected taking-up, and one-time success rate is low, needs to carry out repeatedly sclerotin collection, unnecessary misery is caused to patient,, easily there is sclerotin collection failure, often need surgical incision to get osseous tissue biopsy in particularly Patients with Bone Tumor, for Diagnosis and Treat brings difficulty, be unfavorable for applying clinically.
Summary of the invention
The object of the invention is in order to solve existing bone biopsy needle in gatherer process sclerotin not easily from disconnected taking-up, one-time success rate is low, particularly easily there is sclerotin collection failure in Patients with Bone Tumor, is unfavorable for the problem applied clinically, and then provides a kind of bone biopsy needle extractor.
Technical scheme of the present invention is: bone biopsy needle extractor comprises handle and reverse hook teeth sleeve pipe, described bone biopsy needle extractor is made up of handle and the reverse hook teeth sleeve pipe affixed with handle, the front portion of described reverse hook teeth sleeve pipe is half arc shrouds, and the two edges of described half arc shrouds are reverse hook teeth.
The present invention compared with prior art has following effect: the present invention is by adopting bone biopsy needle extractor, after bone biopsy needle penetrates cortical bone, extract nook closing member, insert bone biopsy needle extractor, the most leading edge of half arc shrouds is concordant with bone biopsy needle needle tube edge, continue reciprocal precession, osseous tissue just enters among half arc shrouds of bone biopsy needle needle tubing and bone biopsy needle extractor, synchronous 360 degree rotate bone biopsy needle and bone biopsy needle extractor, osseous tissue is by completely from disconnected, extract bone biopsy needle extractor, the frictional force that the reverse hook teeth of half arc shrouds is formed successfully can take out bone tissue, put back to the osseous tissue that bone biopsy needle extractor constantly can extract more position, deep, structure of the present invention is simple, easy to operate and safe and reliable, success rate is high, cost is low, decrease the misery of patient, alleviate the labor intensity of medical personnel.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, Fig. 2 bone biopsy needle, and Fig. 3 is the working state figure of bone biopsy needle extractor.
Detailed description of the invention
Composition graphs 1 illustrates present embodiment, the bone biopsy needle extractor 1 of present embodiment comprises handle 1-1 and reverse hook teeth sleeve pipe 1-2, described bone biopsy needle extractor 1 is made up of handle 1-1 and the reverse hook teeth sleeve pipe 1-2 affixed with handle 1-1, the front portion of described reverse hook teeth sleeve pipe 1-2 is half arc shrouds 1-3, and there is reverse hook teeth 1-4 the two edges of described half arc shrouds 1-3.
Using method: composition graphs 1 ~ Fig. 3 illustrates using method of the present invention, as bone biopsy needle 2 is penetrated cortical bone by Fig. 2, take out nook closing member 2-2, as Fig. 3 inserts bone biopsy needle extractor 1, the most leading edge of half arc shrouds 1-3 is concordant with the cutting edge of the needle tubing 2-1 of bone biopsy needle 2, continue reciprocal precession, osseous tissue just enters among the needle tubing 2-1 of bone biopsy needle 2 and half arc shrouds 1-3 of bone biopsy needle extractor 1, synchronous 360 degree rotate bone biopsy needle 2 and bone biopsy needle extractor 1, osseous tissue is by completely from disconnected, extract bone biopsy needle extractor 1, the frictional force that the reverse hook teeth 1-4 of half arc shrouds 1-3 is formed successfully can take out bone tissue, put back to the osseous tissue that bone biopsy needle extractor 1 constantly can extract more position, deep.