Reusable Automatic Synchronous Negative Pressure Biopsy Sampling Device

Abstract

The invention discloses a reusable self-synchronizing negative pressure type biopsy sampling device. The reusable self-synchronizing negative pressure type biopsy sampling device comprises a piston barrel, a springback rotary knob and a switch; an inner chamber of the piston barrel is sleeved onto a piston rod; a piston spring is arranged between the piston barrel and the piston rod; a rubber ring is arranged at the head of the piston rod; the piston rod is connected with a springback holder through a screw; a springback spring is arranged between the springback holder and an outer casing; the springback rotary knob is connected with a springback connecting rod through a springback rotary shaft; the springback connecting rod is fixed on the outer casing through the springback connecting rod rotary shaft; the switch is connected with a triggering connecting rod through a switch rotary shaft; the trigger connecting rod is fixed on the outer casing through a trigger connecting rod rotary shaft. The reusable self-synchronizing negative pressure type biopsy sampling device has the advantages of being short in dwell time inside a human body, small in patient pain, small in wound and complete in sampling, enabling a biopsy device to be used repeatedly, being free of sterilization, only enabling puncture needles to be replaced, being convenient to operate and saving time.

Description

technical field [0001] The invention relates to the field of biopsy sampling, in particular to a reusable automatic synchronous negative pressure biopsy sampling device. Background technique [0002] At present, there are two methods used in needle biopsy operations in China, one using cutting biopsy guns (such as patent Nos. 200720024214.8 and 200920121078.3), and the other using negative pressure biopsy guns (such as patent No. 97247829.9). The main problem of the former is that the cutting type sampling is more traumatic to the patient than the negative pressure type. The problem of the latter is that it is inconvenient to operate. After the puncture needle enters the human body, it is necessary to withdraw the needle once to carry out the next sampling action, which has higher requirements for the operator, and the time for the puncture needle to enter the human body is long. Contents of the invention [0003] The purpose of the present invention is to overcome the ab...

AI Technical Summary

Problems solved by technology

The problem of the latter is that it is inconvenient to operate. After the puncture needle enters the human body, it is necessary to withdraw the needle once to perform the next sampling action, which has higher requirements for the operator, and the time for the puncture needle to enter the human body is long.

Images