Pen-type drip controller

Abstract

The invention provides a pen holding type liquid dropping controller, and belongs to the field of medical apparatuses and instruments. The pen holding type liquid dropping controller comprises a syringe needle, an infusion tube, a flow control hand wheel, a holding rod and an adjusting press sheet. A guide rail, a hand wheel shaft hole and an infusion tube channel are arranged in the holding rod, a slope is arranged on the front section of the infusion tube channel, and a clamping pit is formed in the most front end of the infusion tube channel. The infusion tube is connected with a syringe needle sleeve cap, the sleeve cap is clamped through the clamping pit, and the front part of the infusion tube is laid on the slope. The flow control hand wheel is provided with a wheel disc, a gear and a rotating shaft. The rotating shaft penetrates into the hand wheel shaft hole in the holding rod, and a part of the wheel disc protrudes out of the surface of the holding rod. The adjusting press sheet is provided with a gear rack, a sliding wing and a pressing block, the sliding wing is embedded into the guide rail in the holding rod, the gear rack is meshed with the gear, the adjusting pressing sheet is pushed to move horizontally above the slope when the flow control hand wheel rotates, and therefore the depth pressed by the pressing block in the infusion tube is changed. According to the pen holding type liquid dropping controller, liquid dropping operation is carried out in a pen holding posture, doctors can work more conveniently, and flow control can be carried out more easily. The pen holding type liquid dropping controller is suitable for being used in microsurgery of otology departments, brain departments and the like.

Description

technical field [0001] The invention belongs to medical equipment, in particular to a drip control device. Background technique [0002] In the microsurgery that requires the use of a microscope, such as otology or brain surgery, often because of the need for electric drills to grind bones, it is necessary to drip water on the drill working area during the operation to prevent a large amount of bone debris generated during the high-speed rotation of the drill. Sawdust is "dusty", which will not only affect the surgical field of view, but also pollute the microscope lens and the face of the doctor working at the desk. The infiltration of water can prevent the bone debris from flying everywhere; More heat, because it will generate heat due to friction when the drill is in contact with the bone. At this time, dripping water is needed to cool the drill bit and prevent tissue damage due to local overheating. [0003] At present, the commonly used devices for controlling the drop...

AI Technical Summary

Problems solved by technology

There are many disadvantages of using the infusion tube assembly as a substitute: first, the rotating shaft of its pulley is not fixed, so that the pulley can be translated and rotated, which is easy to cause when the drip speed is adjusted, either no water will drip out, or it will burst out For a column of water, it often takes a long time to find the most suitable speed under the microscope

The second is that the connecting part between the drip speed switch and the needle of the infusion tube is not fixed, and a soft connection is formed between the two, and the position of the needle cannot be controlled when holding the drip speed switch; in actual operation, when adjusting the drip speed, often Two hands are required to operate: one hand is responsible for fixing the needle in the microscope field area, and the other hand is responsible for moving the pulley to adjust the drip speed; in this way, the needle often disappears in the microscope field of view when adjusting the drip speed, and the doctor has to Take the eye away from the microscope and put the needle back into the field of view of the microscope under direct vision; or in order to find the pulley, the doctor must also move his eye away from the eyepiece of the microscope to find it. Such repeated operations waste a lot of surgical time and effort

The third is that the fingers only hold the needle part, which is too small in size and has high requirements on the muscles of the fingers. In particular, microscopic surgery usually takes a long time, which is likely to cause fatigue of the doctor's hands and lead to other fine manipulation errors during the operation. increased surgical risk

Up to now, there are no surgical components specially used to control the velocity of water droplets in microscopy in the domestic market

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