Inhalation miniature sampling apparatus

Abstract

An inhalation micro-sampling device relates to a pill-type swallowable sampling device, which is used for collecting liquid in the digestive tract of animals or human bodies. The device includes a casing, a control mechanism, a power mechanism and a movable mechanism. Sharp objects are fixed on the movable mechanism; before the movable mechanism moves, the movable mechanism is fixedly connected with the control mechanism; The inlet end of the airbag has an open hole which communicates with the airbag and extends out of the airbag. There is a sealing plug in the opening hole. After the control mechanism is installed in the airbag, it is transitionally matched with the inner wall of the shell. A power mechanism and a movable mechanism are installed in the hole of the control mechanism. mechanism, the control mechanism is additionally provided with a through hole to communicate with the airbags on both sides of the control mechanism, and there is a mechanism for opening or sealing the sampling through hole at the sampling end of the shell. The device has high sampling reliability, low energy consumption and simple structure.

Description

Technical field: [0001] The invention relates to a swallowable sampling device, in particular to a pill type swallowable sampling device for collecting liquid in the digestive tract of animals or human bodies. Background technique: [0002] US Patent No. 5,395,366 discloses a pill-type sampling device, which includes a sampling chamber for storing sampling liquid, a piston for generating a partial vacuum, a spring for driving the piston, and a control for controlling the movement of the piston. Mechanism, the device is used to collect fluid in the digestive tract of animals. The device uses the energy of the compressed spring to drive the piston, and the piston moves from one end of the sampling chamber with a one-way valve to the other end, and the partial vacuum generated during the movement sucks the liquid outside the device into the sampling chamber. There are following deficiencies in this device. First of all, the biggest disadvantage of the device is its complex st...

AI Technical Summary

Problems solved by technology

First of all, the biggest disadvantage of the device is the complex structure

Since the device uses the movement of the piston to generate a partial vacuum for sampling, the piston must exhaust gas when it moves to one end, so a vent hole is specially designed in the device, and the vent hole is blocked with a detachable plug , when sampling, the piston uses air pressure to squeeze out the plug. If the plug cannot be disengaged during the operation, sampling cannot be performed, and the reliability is reduced

In addition, the thrust of the spring is used to make the piston move. In order to overcome the friction force and air discharge, etc., it needs a large power to drive, and the drive mechanism with large control energy needs to consume more energy to control. The control mechanism of the device needs Larger current is used to control, while increasing energy, it also increases the volume of the control mechanism

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