Ultrasound-induced positioning type puncture assembly and sleeve type small needle knife
AssigneeBeijing Longfu Hospital
InventorsYuanli Wang, Qingpu Wang, Yanli Lu, Zhijun Tian
Life of this patent
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Abstract
An ultrasound-induced positioning type puncture assembly and a sleeve type small needle knife are provided. The small needle knife includes a cutting assembly and a puncture assembly. The puncture assembly includes a puncture needle core and a puncture sleeve; an annular groove facing an ultrasound equipment probe is formed in an outer wall of the puncture sleeve along a circumferential direction; and a cross section of the annular groove is of lug-shaped.
Claims12
A sleeve type small needle knife comprising a cutting assembly and an ultrasound-induced positioning type puncture assembly, wherein the ultrasound-induced positioning type puncture assembly comprises:
- a puncture needle core;
- and
- a puncture sleeve sleeved on an outer side of the puncture needle core, wherein an annular groove facing an ultrasound equipment probe is formed in an outer wall of the puncture sleeve along a circumferential direction of the puncture sleeve;
- and a cross section of the annular groove along a radial direction of the puncture sleeve comprises an arc edge and a straight e connected with the are edge;
- the straight edge is close to ultrasound development equipment;
- and the arc edge is close to a puncture end of the puncture assembly;
- the cutting assembly comprises a cutting needle knife and a cutting sleeve sleeved on an outer side of the cutting needle knife;
- wherein a cutting edge is formed on a side surface of a cutting end of the cutting needle knife;
- a cutting end of the cutting sleeve is of arc-shaped;
- and part of all of a side surface of the cutting sleeve is provided with a cutting seam.
Dependencies are inferred from the claim text.