Pre-filled catheter flusher capable of reducing injection resistance
A technology of a flusher and a catheter, applied in the direction of a catheter, etc., can solve the problems of difficult piston, no flusher, and inability to retreat, and achieve the effects of reducing frictional resistance, increasing frictional force, and avoiding backflow and blood return.
Inactive Publication Date: 2016-12-21
SAIKE SAISI BIOTECH CO LTD
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Problems solved by technology
At the same time, in order to avoid the return of blood caused by the reflux of the liquid medicine, the piston of the flushing device needs to have a good position maintaining function, that is, the piston is not easy or cannot retreat, but the existing flushing devices generally do not have this function
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Such as figure 1 and figure 2 As shown, the cross-sectional view of the structural schematic diagram of the prefilled catheter flusher of the present invention is provided respectively, and the shown prefilled catheter flusher is composed of a syringe 2, a piston 4, a push rod 5, a connector 6, a protective cap 1 and The contents 3 are composed, the syringe 2 shown is in the shape of a cylinder, and the interior is a cavity for storing the contents 3 . The joint 6 is arranged on the front end of the syringe 2, and the protective cap 1 is arranged on the joint 6 to realize the sealing of the joint 6; when in use, the protective cap 1 is removed from the joint 6, and the joint 6 is matched with the catheter, that is The contents 3 can be passed into the catheter through the connection 6 . The shown push rod 5 and piston 4 are located in the syr...
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The invention discloses a pre-filled catheter flusher capable of reducing injection resistance. The pre-filled catheter flusher comprises a syringe, a push rod, a piston and a protective cap; the pre-filled catheter flusher is characterized in that one or more layer of Y-shaped sealing lip is arranged on the periphery of the piston in a length direction of the piston, wherein the Y-shaped sealing lip is in a direction which is opposite to the direction that contents are pushed and injected outwards by virtue of the piston, so that the injection resistance is reduced and resistance in the opposite direction is increased; therefore, the occurrence of content reflux and blood return phenomenons is avoided. According to the pre-filled catheter flusher disclosed by the invention, the one or more layer of Y-shaped sealing lip, which is arranged on the periphery of the piston, is bent backwards when the contents are pushed and injected outwards, so that friction resistance between the piston and the inner wall of the syringe is reduced; and the Y-shaped sealing lip becomes expanded when the piston is drawn and pulled backwards, so that the friction force between the piston and the inner wall of the syringe is increased, and the occurrence of the content reflux and blood return phenomenons is avoided.
Description
technical field [0001] The present invention relates to a prefilled catheter irrigator, more specifically, to a prefilled catheter irrigator which reduces injection resistance by arranging one or more layers of Y-shaped sealing lips facing the tail of the push rod. Background technique [0002] In recent years, prefilled catheter irrigators in which medical solutions are prefilled in medical packaging materials have been widely used. Such a catheter irrigator does not need to extract the medicinal solution from the medicine bottle when flushing the catheter, shortens the time of the flushing operation, and prevents the medicinal solution from being polluted during the extraction process. [0003] In the prior art, the catheter flusher achieves sealing of the flusher through the interference fit between the piston and the syringe, and elastic deformation of the piston. Most of the medical staff, especially nurses, are women, and it is generally reported that the bolus is too...
Claims
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IPC IPC(8): A61M25/00
CPCA61M25/00A61M2025/0019
Inventor 张旭东宋万学吴圣强徐艳丽黄琳静孙春明
Owner SAIKE SAISI BIOTECH CO LTD