Pressure and volume controlled hybrid type needle cylinder device

Abstract

An injector able to control pressure and the quantity of injection for generating high pressure to push the substance contained in it is composed of a boosting push rod with a screwed straight rod, a grasped control part with a screwed through hole for match with said push rod, and a sleeve cylinder with a hollow cylinder and a sleeve part. It features that said hollow cylinder is matched with said sleeve part in movable mode.

Description

technical field [0001] The invention relates to a pressure-controlled volume-controlled mixing syringe device, especially a medical device that can generate high pressure to push the contents of the cylinder, and through the design of the mechanism, it can be easily and conveniently advanced or retreated. Controlled volume mixing syringe device. Background technique [0002] In the past, when medical personnel administered slurry-like medicines with high viscosity to patients, most of them still used conventional injection syringes to hold the medicines and then injected them with push rods. In this method, if the target position in the patient's body to be injected is a high-pressure position, such as when the collapsed vertebral joints need to be stretched and reset, the traditional injection syringe will be greatly increased due to the reaction force, or the As the medicine gradually solidifies, it becomes more and more difficult for the medical staff to inject more and ...

AI Technical Summary

Problems solved by technology

In this method, if the target position in the patient's body to be injected is a high-pressure position, such as when the collapsed vertebral joints need to be stretched and reset, the traditional injection syringe will be greatly increased due to the reaction force, or the The medicines in the condition are gradually solidified, making it more and more difficult for the medical staff to inject more and more pressure or physical exertion. Even when the pressure is weakened, the medicine or syringe that has been injected The push rod is pushed back by the reaction force, causing the stretched area to collapse again, and the operation fails

[0003] Furthermore, in addition to the shortcomings of traditional injection syringes that cannot continue to pressurize and fix the pressure to prevent back pressure, the high-pressure injection syringe device required by medical staff also needs to have a hollow sleeve that can still be used for ordinary syringes Part of the function, and the device can quickly push the injection and retreat, or can slowly fine-tune the push to control the multiple functions of the dose. However, most of these pressurizing devices available on the market are complex in structure, difficult to clean and disinfect, and expensive , products or patents that cannot be used and discarded, and may imply circular pollution, such as US patents 5,800,405, 5,599,315, 5,057,078, and 5,047,015, etc.

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