CN209933696U

CN209933696U - Flow stopping device for pump infusion apparatus

Info

Publication number: CN209933696U
Application number: CN201920353571.1U
Authority: CN
Inventors: 朱建新; 刘冬莲
Original assignee: Zhiyi Industrial (shanghai) Co Ltd
Current assignee: Zhiyi Industrial (shanghai) Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-01-14
Anticipated expiration: 2029-03-20

Abstract

The utility model relates to the field of medical equipment, specifically a flow stopping device for pump infusion apparatus, including the drip chamber body, the drip chamber body includes the drip chamber, goes up the drip chamber top and is connected with the feed liquor pipe, goes up the drip chamber lower extreme and is connected with down the drip chamber, drip chamber bottom is connected with the drain pipe down, be equipped with the fixed plate in the drip chamber down, be equipped with the valve port on the fixed plate, be equipped with the sleeve down in the drip chamber, the sleeve endotheca is equipped with the case with valve port matched with. The utility model has the advantages that: the valve core is pressed downwards by the pressure generated by the liquid medicine in the area above the fixed plate, the valve port is opened, the liquid medicine enters the area below the fixed plate and flows out from the liquid outlet pipe, after the liquid medicine in the liquid inlet pipe is dripped, the liquid medicine in the area above the fixed plate is gradually reduced, the pressure generated by the liquid medicine is smaller than the elastic force of the spring, the valve port is sealed by the upward movement of the valve core, and the blood in the human body can be prevented from flowing back under the action of the residual liquid medicine at the bottom of the lower dropping funnel and the human body.

Description

Flow stopping device for pump infusion apparatus

Technical Field

The utility model relates to the field of medical equipment, in particular to a flow stopping device for a pump infusion apparatus.

Background

The infusion apparatus is a common medical consumable, and a channel between a vein and liquid medicine is established through aseptic treatment for intravenous infusion. When patient transfused, need medical personnel to pay close attention to more and protect the infusion disease, in time change the liquid medicine or extract the scalp acupuncture when the infusion finishes, otherwise can appear the blood and flow back to the intraductal phenomenon of transfusion, because of medical personnel's shortage, working strength is big, and nursing ability is limited, and this type of phenomenon also takes place occasionally in the infusion treatment, consequently needs a flow stopping device for when the liquid medicine is transfused soon, flow stopping device can stop the transfusion system, prevents the blood backward flow.

Chinese patent (publication No. CN207024345U) discloses an automatic liquid-stopping measuring cylinder infusion apparatus, be equipped with the ball valve in the dropping bottle in the device, after the liquid medicine gets into the dropping bottle, the ball valve is received the effect of buoyancy and is floated gradually, the liquid medicine flows through the end opening of dropping bottle, after the liquid medicine in the dropping bottle reduces gradually, buoyancy reduces, the ball valve whereabouts, the unable end opening through the dropping bottle of liquid medicine flows this moment, however, the liquid medicine drips into the dropping bottle, the ball valve can move about after floating, the position is indefinite, when the liquid medicine reduces, can not guarantee during the ball valve whereabouts just in time to seal the end opening of dropping bottle after the whereabouts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flow stopping device for pump transfusion system to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the flow stopping device for the infusion apparatus for the pump comprises a dropping funnel body, wherein the dropping funnel body comprises an upper dropping funnel, the top of the upper dropping funnel is connected with a liquid inlet pipe and a first vent pipe, the lower end of the upper dropping funnel is connected with a lower dropping funnel, the bottom of the lower dropping funnel is connected with a liquid outlet pipe, a fixed plate is arranged in the lower dropping funnel, a valve port is arranged on the fixed plate, a sleeve is arranged in the lower dropping funnel, a mounting plate is arranged in the sleeve, a valve core matched with the valve port is sleeved in the sleeve, a spring is arranged at the top of the mounting plate, and the other end of the spring is connected with the top.

As a further aspect of the present invention: the bottom of the side wall of the upper dropping funnel is provided with an internal thread, and the top of the side wall of the lower dropping funnel is provided with an external thread matched with the internal thread.

As a further aspect of the present invention: and a limiting ring is arranged on the periphery of the lower dripping bucket and is positioned below the external thread.

As a further aspect of the present invention: the sleeve is provided with a plurality of through holes.

As a further aspect of the present invention: be equipped with first filtration membrane in the first permeability cell, first permeability cell tip cover is equipped with first rubber sleeve.

As a further aspect of the present invention: and a micro-filtration membrane is arranged in the lower dropping hopper and is positioned above the fixing plate.

As a further aspect of the present invention: one side of the lower dropping funnel is connected with a second vent pipe, a second air filtering membrane is arranged in the second vent pipe, and a second rubber sleeve is sleeved at the end of the second vent pipe.

Compared with the prior art, the beneficial effects of the utility model are that: when the regional liquid medicine in funnel body dead plate top is abundant, the pressure that the liquid medicine produced pushes down the case, the valve port is opened, the liquid medicine gets into the region of dead plate below this moment and flows out by the drain pipe, to the human body transport, after the liquid medicine in the drain pipe has dripped, the regional liquid medicine in dead plate top reduces gradually, when its pressure that produces is less than the elasticity of spring, the case upwards moves under the spring elastic action and seals the valve port, under the effect of remaining liquid medicine in drip chamber bottom and human venous pressure, the liquid medicine stops to the human body transport, can prevent the internal blood backward flow of human body, for make full use of liquid medicine, take off the second rubber sleeve, under the effect of external atmospheric pressure, the remaining liquid medicine accessible drain pipe in drip chamber bottom continues to carry to the human body down.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: 1-upper dropping funnel, 2-liquid inlet pipe, 3-first vent pipe, 4-first air filtering membrane, 5-first rubber sleeve, 6-lower dropping funnel, 7-spacing ring, 8-fixing plate, 9-valve port, 10-valve core, 11-spring, 12-sleeve, 13-mounting plate, 14-through hole, 15-liquid outlet pipe, 16-microporous filtering membrane, 17-second vent pipe, 18-second air filtering membrane, 19-second rubber sleeve.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1:

referring to fig. 1, a flow stopping device for a pump infusion apparatus comprises a dropping funnel body, the dropping funnel body comprises an upper dropping funnel 1, the top of the upper dropping funnel 1 is connected with a liquid inlet pipe 2 and a first vent pipe 3, the first vent pipe 3 can balance the air pressure inside and outside the dropping funnel body, so that liquid medicine can drop smoothly, the lower end of the upper dropping funnel 1 is connected with a lower dropping funnel 6, the bottom of the lower dropping funnel 6 is connected with a liquid outlet pipe 15, a fixing plate 8 is arranged in the lower dropping funnel 6, a valve port 9 is arranged on the fixing plate 8, a sleeve 12 is arranged in the lower dropping funnel 6, a plurality of through holes 14 are arranged on the sleeve 12, a mounting plate 13 is arranged in the sleeve 12, a valve core 10 matched with the valve port 9 is sleeved in the sleeve 12, a spring 11 is arranged at the top of the mounting plate 13, the other end of the spring 11 is connected with the top of the valve core 10, before the liquid medicine, after the liquid medicine enters the funnel body, when enough liquid medicine is in the area above the fixed plate 8, the pressure generated by the liquid medicine presses the valve core 10 downwards, the valve port 9 is opened, the liquid medicine enters the area below the fixed plate 8 and flows out from the liquid outlet pipe 15, when the liquid medicine in the liquid inlet pipe 2 is dripped, the liquid medicine in the area above the fixed plate 8 is gradually reduced, the pressure generated by the liquid medicine is smaller than the elastic force of the spring 11, the valve core 10 moves upwards under the elastic force of the spring 11 to seal the valve port 9, and the sleeve 12 enables the valve core 10 to move more stably when moving upwards and downwards;

furthermore, internal threads are arranged at the bottom of the side wall of the upper dropping funnel 1, external threads matched with the internal threads are arranged at the top of the side wall of the lower dropping funnel 6, a limiting ring 7 is arranged on the periphery of the lower dropping funnel 6, the limiting ring 7 is positioned below the external threads, and the situation that the upper dropping funnel 1 and the lower dropping funnel continue to rotate to install damaged threads after reaching the limit positions when workers assemble the upper dropping funnel 1 and the lower dropping funnel 6 can be prevented by arranging the limiting ring 7;

further, a first air filtering membrane 4 is arranged in the first vent pipe 3, a first rubber sleeve 5 is sleeved at the end of the first vent pipe 3, the first rubber sleeve 5 needs to be taken down before infusion is performed on a patient, so that gas in the funnel body can be discharged to the outside, the air pressure in the dropping funnel body is balanced with the external air pressure, liquid medicine is dropped smoothly, and the first air filtering membrane 4 can effectively prevent dust, microorganisms and the like in the external air from entering the dropping funnel body;

further, a micro-filtration membrane 16 is arranged in the lower dropping funnel 6, the micro-filtration membrane 16 is positioned above the fixing plate 8, and the micro-filtration membrane 16 can filter particles in the liquid medicine to prevent the particles from entering a human body.

The principle of the embodiment is as follows: before infusion is carried out on a patient, the first rubber sleeve 5 needs to be taken down firstly, so that gas in the funnel body can be discharged to the outside, the air pressure in the dropping funnel body is balanced with the air pressure outside, liquid medicine drops smoothly, the first air filtering membrane 4 can effectively prevent dust, microorganisms and the like in the outside air from entering the dropping funnel body, the valve core 10 seals the valve port 9 before the liquid medicine enters the dropping funnel body, after the liquid medicine enters the funnel body, when the liquid medicine in the area above the fixing plate 8 is enough, the valve core 10 is pressed downwards by the pressure generated by the liquid medicine, the valve port 9 is opened, the liquid medicine enters the area below the fixing plate 8 and flows out from the liquid outlet pipe 15, after the liquid medicine in the liquid inlet pipe 2 is dropped, the liquid medicine in the area above the fixing plate 8 is gradually reduced, and when the generated pressure is smaller than the elastic force of the spring 11, the valve core 10 moves upwards under the elastic force of the spring 11 to seal the valve, the sleeve 12 makes the valve core 10 more stable when moving up and down, and after the valve port 9 is closed, the liquid medicine stops being conveyed to the human body under the action of the liquid medicine remained at the bottom of the lower dropping funnel 6 and the human body venous pressure, and meanwhile, the blood in the human body cannot flow back into the liquid outlet pipe 15.

Example 2:

referring to fig. 2, compared with embodiment 1, this embodiment further includes a second ventilation pipe 17, one end of the second ventilation pipe 17 is connected to one side of the lower dropping funnel 6, a second air filtering membrane 18 is disposed in the second ventilation pipe 17, and a second rubber sleeve 19 is sleeved at the other end of the second ventilation pipe 17.

In order to fully use the liquid medicine, the second rubber sleeve 19 is taken down, and the liquid medicine remained at the bottom of the lower dropping funnel 6 can be continuously conveyed to the human body through the liquid outlet pipe 15 under the action of the external atmospheric pressure.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The flow stopping device for the infusion apparatus for the pump comprises a dropping funnel body and is characterized in that the dropping funnel body comprises an upper dropping funnel (1), the top of the upper dropping funnel (1) is connected with a liquid inlet pipe (2) and a first vent pipe (3), the lower end of the upper dropping funnel (1) is connected with a lower dropping funnel (6), the bottom of the lower dropping funnel (6) is connected with a liquid outlet pipe (15), a fixing plate (8) is arranged in the lower dropping funnel (6), a valve port (9) is arranged on the fixing plate (8), a sleeve (12) is arranged in the lower dropping funnel (6), a mounting plate (13) is arranged in the sleeve (12), a valve core (10) matched with the valve port (9) is sleeved in the sleeve (12), a spring (11) is arranged at the top of the mounting plate (13), and the other end of the spring (11) is connected with the top of the valve.

2. The flow stopping device for the infusion set for the pump according to claim 1, wherein the bottom of the side wall of the upper dropping funnel (1) is provided with internal threads, and the top of the side wall of the lower dropping funnel (6) is provided with external threads matched with the internal threads.

3. The flow stopping device for the infusion set for the pump according to claim 2, wherein a limiting ring (7) is arranged on the periphery of the lower dropping funnel (6), and the limiting ring (7) is positioned below the external thread.

4. The flow stop device for a pump infusion set according to claim 1 or 3, wherein the sleeve (12) is provided with a plurality of through holes (14).

5. The flow stopping device for the pump infusion set according to claim 4, wherein a first air filtering membrane (4) is arranged in the first vent pipe (3), and a first rubber sleeve (5) is sleeved at the end part of the first vent pipe (3).

6. The flow stopping device for a pump infusion set according to claim 5, wherein a micro-porous filtering membrane (16) is arranged in the lower dropping funnel (6), and the micro-porous filtering membrane (16) is positioned above the fixing plate (8).

7. The flow stopping device for the pump infusion set according to claim 5 or 6, wherein one side of the lower dropping funnel (6) is connected with a second vent pipe (17), a second air filtering membrane (18) is arranged in the second vent pipe (17), and a second rubber sleeve (19) is sleeved at the end part of the second vent pipe (17).