3D printing-based percutaneous puncture needle structure for urology

Abstract

The invention provides a 3D printing based percutaneous puncture needle structure for the urinary surgery, and discloses a puncture needle structure which realizes manufacture of puncture needle sections by 3D printing, forms a complete puncture needle spliced by multiple puncture needle sections and capable of performing bending rotation and performs bending adjustment through a built-in soft tube. The puncture needle structure is characterized by comprising multiple puncture needle sections based on the 3D printing and the soft tube penetrating through the needle sections, each puncture needle section is of a vacuum ring sleeve structure, one end is retracted inwards to form a circular truncated cone surface, the other end is bent inwards to form an internal flange, multiple adjusting grooves are formed in the internal flange, the internal flange is divided into multiple independent areas by the adjusting grooves, multiple clamping blocks are arranged on the edge of the internal flange and correspond to the middle positions of the independent areas, each clamping block is of a T-shaped structure, multiple clamping grooves are formed in the circular truncated cone surfaces of oneends of the puncture needle sections and are in one-to-one correspondence with clamping rings, and each clamping groove is of a T-shaped structure.

Description

technical field [0001] The invention relates to a 3D printed urological percutaneous puncture needle structure, relates to a puncture needle structure for urological percutaneous puncture using 3D printing technology in the medical process, and belongs to the field of medical devices. In particular, it relates to a puncture needle structure in which a puncture needle section is manufactured by 3D printing, and a complete puncture needle capable of bending is formed by splicing a plurality of puncture needle sections, and the bending adjustment is performed through a built-in soft air tube. Background technique [0002] When performing some urological operations, the surgeon needs to use a puncture needle to puncture the abdominal cavity, deliver gas to the abdominal cavity, and establish a passage for the endoscope and surgical instruments to enter and exit the abdominal cavity from the outside, or to apply medicine to the lesion through the puncture needle, This percutaneou...

AI Technical Summary

Problems solved by technology

[0005] Notification number CN109498126A discloses a flexible puncture needle device, including a puncture needle, an outer sleeve, and a central tube. When the device is inserted, its rigidity is controlled only by the length of the central tube extending into the outer sleeve. It is supported by the central tube, and the central tube is a flexible hose, which is hindered by muscle tissue during puncture, and is easily squeezed and bent, causing the overall deflection of the outer tube, and causing the puncture direction to deviate from the predetermined position.

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