Mouth and nose secretion suction device
A technology for suctioning devices and secretions, which is applied to suction devices, suction and delivery systems, hypodermic injection devices, etc., can solve the problems of cross-contamination of suction bags, easy damage to nasal mucosa, etc., and achieves reduced damage, good effect, and reliable pressure. poor effect
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Embodiment 1
[0022] Embodiment 1, a kind of oral and nasal secretion suction device, such as figure 1 As shown, it includes a sputum suction tube 2, and a negative pressure unit 1 is connected to the rear end of the sputum suction tube 2, and the negative pressure unit 1 can make the sputum suction tube 2 suck and discharge secretions in the mouth and nose.
[0023] The negative pressure unit 1 includes a shell 1-1 communicated with the sputum suction tube 2, a piston 1-2 is arranged inside the shell 1-1, a piston rod 1-5 is connected to the rear center of the piston 1-2, the piston 1 -2 Divide the inner chamber of the shell 1-1 into a rod chamber 1-3 and a rodless chamber 1-4, the rear end of the suction tube 2 communicates with the rodless chamber 1-4, and the rodless chamber 1-4 connects with the suction chamber A first one-way valve 4 is arranged between the sputum tubes 2, and a second one-way valve 5 is arranged on the side walls of the rodless chambers 1-4. The first one-way valve ...
Embodiment 2
[0030]Embodiment 2, a kind of oral and nasal secretion suction device, such as figure 1 As shown, the outer side of the housing 1-1 is provided with a fixed handle 1-7, and the fixed handle 1-7 is hinged with a movable handle 1-6 inserted into the housing 1-1. The rear ends of the rods 1-5 are hinged. When the operator holds the movable handle 1-6 and rotates relative to the fixed handle 1-7, the movable handle 1-6 will drive the piston rod 1-5 to move, and then drive the piston 1-2 to move in the shell 1-1, thereby realizing a single Negative pressure is formed by hand operation, and the operation is very convenient.
[0031] Specifically, the rear end of the piston rod 1-5 is provided with a pin shaft 1-8, and one end of the movable handle 1-6 protruding into the housing 1-1 is provided with a long hole 1-9 which is slidingly and hingedly fitted with the pin shaft. The operator can discharge the air in the rodless cavity 1-4 by reciprocatingly pressing the movable handle 1...
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