CN106860949B

CN106860949B - Automatic liquid-stopping infusion apparatus

Info

Publication number: CN106860949B
Application number: CN201710113526.4A
Authority: CN
Inventors: 朱保群
Original assignee: Nanning Jian Jia Network Technology Co Ltd
Current assignee: Nanning Jianjia Network Technology Co ltd
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2020-03-27
Anticipated expiration: 2037-02-28
Also published as: CN106860949A

Abstract

The invention discloses an automatic liquid-stopping infusion apparatus, which comprises a drip cup, wherein the drip cup is provided with an input port and an output port, the inner wall of the drip cup is fixedly connected with a liquid-stopping device, a cavity chamber with a closed upper end and an opening facing the output end of the drip cup is formed inside the liquid-stopping device, a floating ball is arranged in the cavity chamber, and the lower end of the cavity chamber in the liquid-stopping device is funnel-shaped; the liquid stopping device is characterized in that a first channel and a second channel are formed by the non-fit part of the outer wall of the liquid stopping device and the inner wall of the drip cup, the first channel and the second channel are oppositely arranged, a liquid inlet hole is formed in the outer wall surface of the second channel, opposite to the liquid stopping device, and the liquid inlet hole penetrates through the cavity. According to the invention, after the liquid medicine is completely dripped, the floating ball isolates air from entering the liquid conveying pipe connected with the output end of the drip cup, a certain amount of liquid medicine is always present in the first channel and the second channel, the liquid medicine has the same liquid level, the effect of sealing the cavity chamber is achieved, the pressure in the cavity chamber is increased to form negative pressure, and when the backflow pressure of the liquid dropping is balanced with the negative pressure, the backflow of the liquid dropping is stopped, so that the effect of really preventing blood return is achieved.

Description

Automatic liquid-stopping infusion apparatus

Technical Field

The invention relates to the technology of medical intravenous infusion sets, in particular to an automatic liquid-stopping infusion set capable of preventing blood return.

Background

In the clinical treatment process, many patients often need to be transfused so as to cure the diseases by the treatment means of transfusing. Thus, a large number of infusion sets are required. Present transfusion system is disposable transfusion system basically, a disposable consumptive material for establishing passageway between vein and the liquid medicine, has played profitable effect to preventing the cross infection between the patient, however, there are more problems in using these disposable transfusion systems, in addition medical personnel intensity of labour is very big, patient's infusion in a plurality of wards is looked after to a medical personnel usually, often appear because of medical personnel, patient or patient's family members fail in time to observe the interior liquid medicine of infusion bottle and have been lost, can not in time change the phenomenon of infusion bottle or pull out the infusion syringe needle, lead to in patient's blood rises back to the transfusion system pipeline, cause multiple unnecessary to influence: the needle head is easy to block due to blood backflow, so that the medical liquid can not play a role in treatment due to stagnation, and the working strength of medical staff is increased; the reflux blood forms a small thrombus on the wall of the infusion tube, and the reflux blood can cause embolism in the body of a patient; the patient is easy to be nervous and panic to the transfusion blood return and has larger emotion to the nursing work, which brings unnecessary trouble to the medical care personnel.

At present, a common medical disposable infusion apparatus has no automatic closing function when an infusion bottle is replaced and infusion is finished, namely, has no blood return prevention function, so that a large number of infusion devices with blood return prevention function appear. There are various applications for blood return prevention, but these applications have complex structure and poor blood return prevention effect, and some applications cannot achieve the purpose of blood return prevention. At present there is such design, sets up a circular floater in the drip chamber of transfusion system, and the floater can float when its purpose has the liquid medicine in the drip chamber, and the floater can fall down until stopping up the liquid outlet of drip chamber along with the reduction of liquid level in the drip chamber, nevertheless because the floater is less and lighter, can not fall on the liquid outlet of drip chamber in time after the whereabouts again, and the liquid outlet of drip chamber can not effectively be stopped up to the floater in the use, still can take place the phenomenon of blood return, and its security is lower.

For example, the Chinese patent is a micropore blood return prevention infusion set (patent number: 201110126833.9), and if the sealing film is thin, the film cannot be formed because the periphery is not stressed; if the forming can be carried out to a certain thickness, because of the limitation of the process and the structure, two rigid surfaces cannot be sealed absolutely, the residual liquid can flow out quickly, and the slow release can not be achieved, so that the blood return within a certain time can be prevented. In other schemes, the filtering membrane is adopted to reduce the speed of the liquid medicine, the blood return prevention effect cannot be achieved actually, if the filtering membrane is in long flowing liquid or flowing liquid with high concentration, membrane holes are easy to block, when the next bottle of liquid medicine is used for transfusion, the transfusion is not smooth, the flow rate is difficult, and thus certain difficulty is brought to slow release and blood return prevention.

For example, a blood return prevention infusion bottle (patent number: 201520048866. X) in Chinese patent has a sheet with buoyancy, a plurality of pins are arranged on the peripheral edge of the sheet, the pins are positioned between the inner wall of a bottle mouth and a bottle stopper, when the bottle stopper is inserted into the bottle mouth of the bottle body, the pins are fixed between the inner wall of the bottle mouth and the bottle stopper, when liquid exists in an infusion flat bottle, the sheet floats in the liquid, when the liquid level drops to the position where the sheet normally floats, the sheet can also drop along with the liquid level along with the drop of the liquid level until the liquid level is lower than a puncture outfit of the infusion apparatus, the sheet immediately wraps and attaches the head of the puncture apparatus, and the infusion apparatus is isolated from air, so. The patent mainly has the problems that when a patient needs to transfuse more than a plurality of infusion bottles, the device needs to be installed on each infusion bottle, waste exists, and the standard is difficult to unify.

Disclosure of Invention

The invention aims to: aiming at the defects of the prior art, the automatic liquid-stopping infusion apparatus is provided, after the liquid medicine is dripped to the greatest extent, the floating ball isolates the air at the opening end in the cavity chamber, certain liquid medicine always exists in the first channel and the second channel, the liquid levels of the liquid medicine in the two channels are the same, and the air cannot enter the first channel from the second channel and then enters the input end of the drip cup, so that double protection is achieved, the blood return prevention effect is achieved fundamentally, and the safety is good.

In order to solve the technical problems, the invention adopts the technical scheme that:

automatic liquid-stopping infusion apparatus, including dripping the kettle, drip the kettle and have input port and delivery outlet, its characterized in that: the inner wall of the drip cup is fixedly connected with a liquid stopping device, a cavity chamber with a closed upper end and an opening facing the output end of the drip cup is formed inside the liquid stopping device, a floating ball is arranged in the cavity chamber, and the lower end of the cavity chamber in the liquid stopping device is funnel-shaped;

end one side invagination of liquid device outer wall and drip a kettle inner wall and form first passageway, first passageway begins to drip a kettle input port and ends in dripping kettle inner wall bottom, the hypomere invagination of the opposite side of liquid device outer wall forms the second passageway with the kettle inner wall, the second passageway begins to drip kettle inner wall bottom and ends in the ladder surface of the hypomere in the opposite side of liquid device outer wall, first passageway and second passageway are relative setting the second passageway is relative it has a feed liquor hole to open on the outer wall of liquid device to end, the feed liquor hole link up the plenum chamber.

As a preferred technical scheme of the invention, a baffle is arranged in the cavity chamber, the height of the baffle is slightly lower than that of the liquid inlet hole, the floating ball is arranged below the baffle in the cavity chamber, a plurality of through holes are uniformly distributed on the baffle, and the diameter of each through hole is smaller than that of the floating ball. The design of separation blade is in order to control the floater can not float to other positions on cavity upper portion, the better restriction floater floating range.

Further, the diameter of the floating ball is larger than or equal to the diameter of the output end of the hollow chamber.

Furthermore, the floating ball is a spherical or inverted conical floating ball.

Further, the density of the floating ball is lower than that of all liquid medicines used for infusion or lower than that of water. The floating ball can float on the liquid level.

Further, the wall thickness of the outer wall of the drip cup is the same as that of the outer wall of the liquid stopping device, PET or PP without plasticizer is adopted, and a transparent or semitransparent ultraviolet-proof layer is uniformly coated on the outer wall of the drip cup. The adopted material effectively prevents toxic substances such as plasticizer and the like from invading human body, reduces the adsorption of the medicine, and is beneficial to the health of patients and the safety of transfusion; the outer wall coating of the drip cup can effectively meet the light-shading effect of the medicine requirement.

Furthermore, the cross section of the first channel or the second channel, which corresponds to the invagination of the outer wall of the liquid stopping device, is arc-shaped or triangular.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

according to the invention, after the liquid medicine is completely dripped, the liquid medicine can not enter the liquid medicine again through the liquid inlet hole, the floating ball is a first layer of protection, the floating ball falls along with the liquid level in the cavity chamber to block the opening end in the cavity chamber, so that the passage below the output port of the drip cup is completely closed, air can not enter the liquid conveying pipe connected with the output port of the drip cup, the second layer of protection is that if the floating ball can not block the liquid medicine backflow phenomenon, the liquid levels of the residual liquid medicine in the first passage and the second passage formed by the liquid stopping device in the drip cup are always kept the same and lower than the liquid inlet hole, at the moment, the pressure in the cavity chamber is increased to form negative pressure, when the liquid medicine backflow pressure is balanced with. The liquid stopping device can effectively prevent air from entering the infusion pipeline, so that medical personnel can more flexibly arrange the time for ending infusion or replacing liquid medicine, and the working efficiency of the medical personnel is improved.

Drawings

Fig. 1 is a schematic structural view of an automatic liquid-stopping infusion set of embodiment 1 of the invention;

FIG. 2 is a top cross-sectional view of a drip cup in the automatic liquid stop infusion set of FIG. 1;

FIG. 3 is a cross-sectional view A-A of a drip cup in the automatic fluid stop infusion set of FIG. 2;

FIG. 4 is a schematic view of the automatic fluid-stopping infusion set of FIG. 3 with the drip chamber being filled with a continuously dripping medical fluid;

FIG. 5 is a schematic view of the automatic fluid-stopping infusion set of FIG. 3 showing the drip chamber filled with the medicinal fluid;

the labels in the figure are: 10-bottle stopper puncture outfit, 20-infusion tube, 30-three-way joint, 40-drip cup, 50-flow regulator, 60-liquid medicine filter, 70-intravenous infusion needle, 80-air inlet tube, 90-air filter, 41-input port, 42-liquid stopping device, 420-first channel, 421-second channel, 43-blocking piece, 44-floating ball, 45-output port, 46-liquid inlet hole, 47 and cavity chamber.

Detailed Description

The present invention will be described in further detail with reference to the attached drawings, wherein like reference numerals designate identical or similar parts throughout the several views, and which are provided in a simplified form for understanding only the specific structure of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and do not limit the scope of the present invention.

Example 1

The specific embodiment of the automatic liquid-stopping infusion apparatus of the invention is shown in fig. 1, fig. 2 and fig. 3, and comprises a bottle stopper puncture outfit 10, an infusion tube 20, a three-way joint 30, a drip cup 40, a flow regulator 50, a liquid medicine filter 60, an intravenous infusion needle 70, an air inlet tube 80 and an air filter 90, wherein the drip cup 40 is provided with an input port 41 and an output port 45, the three-way joint is provided with an input end, an output end and a medicine adding port, the output end of the three-way joint 30 is connected with the input port 41 of the drip cup 40, and the output port 45 of the drip cup.

The inner wall of the drip cup 40 is fixedly connected with a liquid stopping device 42, a hollow chamber 47 with a closed upper end and an opening facing the output port 45 of the drip cup 40 is formed in the liquid stopping device 42, a floating ball 44 is arranged in the hollow chamber 47, and the lower end of the hollow chamber 47 in the liquid stopping device 42 is funnel-shaped; end one side invagination of liquid device 42 outer wall and drip 40 inner walls of kettle and form first passageway 420, first passageway 420 begins to drip 40 input ports and ends in 40 inner walls bottom of kettle, the middle and lower section invagination of the opposite side of liquid device 42 outer wall forms second passageway 421 with 40 inner walls of kettle, second passageway 421 begins to drip 40 inner walls bottom and ends in the ladder surface of the middle and lower section of liquid device 42 outer wall opposite side, first passageway 420 and second passageway 421 are relative setting second passageway 421 is relative it has a feed liquor 46 to open on the liquid device 42 outer wall, feed liquor hole 46 link up plenum chamber 47.

A blocking piece 43 is arranged in the hollow chamber 47, the height of the blocking piece 43 is slightly lower than that of the liquid inlet hole 46, the floating ball 44 is arranged below the blocking piece in the hollow chamber 47, a plurality of through holes are uniformly distributed on the blocking piece 43, and the diameter of each through hole is smaller than that of the floating ball. The design of the blocking piece 43 is to control the floating ball 44 not to float to other positions at the upper part of the cavity, so as to better limit the floating range of the floating ball 44.

The diameter of the float ball 44 is greater than or equal to the diameter of the open end of the hollow chamber. When the liquid medicine drips out, the floating ball can suck the opening end of the empty cavity under the action of pressure, and air is prevented from continuously entering the empty cavity.

The ball 44 is spherical or inverted conical.

As shown in fig. 4 and 5, the density of the floating ball 44 is lower than that of all the liquid medicine for infusion or lower than that of water, so that the requirement can be met, the floating ball 44 can float on the liquid level of the liquid medicine, and when the liquid medicine is completely dripped, the open end of the hollow chamber can be smoothly blocked by the floating ball.

The wall thickness of the outer wall of the drip cup 40 is the same as that of the outer wall of the liquid stopping device 42, PET or PP without plasticizer is adopted, and a transparent or semitransparent ultraviolet-proof layer is uniformly smeared on the outer wall of the drip cup 40. The adopted materials effectively prevent toxic substances such as plasticizer and the like from harming human bodies, reduce the adsorptivity of the medicine and are beneficial to the health of patients and the safety of transfusion; the outer wall coating of the drip cup 40 can effectively meet the light-shading effect of the medicine requirement.

The cross section of the first channel 420 or the second channel 421 corresponding to the inward sinking of the outer wall of the liquid stopping device 42 is arc-shaped or triangular.

As shown in fig. 1, 4 and 5, the automatic liquid-stopping infusion apparatus of the present invention is an improvement of a drip cup on the basis of a conventional infusion apparatus, wherein a liquid-stopping device is arranged in the drip cup, a hollow chamber 47 with a closed upper end and an opening facing an output port 45 of the drip cup 40 is formed in the liquid-stopping device 42, a floating ball 44 is arranged in the hollow chamber 47, and the lower end of the hollow chamber 47 in the liquid-stopping device 42 is funnel-shaped; the outer wall of the liquid stopping device 42 and the non-fit part of the inner wall of the drip cup 40 form a first channel 420 and a second channel 421, the first channel 420 and the second channel 421 are oppositely arranged, the second channel 421 is opposite to the outer wall of the liquid stopping device 42, a liquid inlet hole 46 is formed in the outer wall of the liquid stopping device 42, and the liquid inlet hole 46 penetrates through the cavity chamber 47. When a patient normally transfuses, the liquid level of the first channel 420 is always higher than the liquid level of the second channel 421 and higher than the liquid inlet hole 46, the floating ball 44 always floats on the liquid level of the liquid medicine, when the liquid medicine of the medicine bag or the medicine bottle completely drips, the floating ball falls along with the liquid level to block the opening end of the cavity chamber, namely the dropping liquid outlet 45, air is isolated from entering the infusion tube 20 connected with the outlet of the drip cup 40, negative pressure is formed below the infusion tube 20, and the effect of automatically stopping liquid is achieved; if the floater 44 can not block the open end of the cavity chamber 47, when the liquid medicine backflow special phenomenon occurs, because the liquid levels of the residual liquid medicine in the first channel 420 and the second channel 421 are always kept the same and are lower than the liquid inlet hole 46, the effect of sealing the cavity chamber 47 is achieved, at the moment, the pressure in the cavity chamber 47 is increased to form negative pressure, and when the dropping liquid backflow pressure is balanced with the negative pressure, the dropping liquid backflow is stopped, so that the real blood backflow prevention effect and the safety of the transfusion process are achieved. Due to the action of negative pressure, when the liquid medicine is changed again, after the bottle stopper puncture outfit 10 is inserted into the liquid medicine, the liquid medicine enters the cavity chamber 47, the floating ball 44 slowly floats on the liquid medicine liquid level due to the buoyancy of the liquid medicine, and the liquid medicine smoothly enters the infusion tube 20 connected with the output port 45 of the drip cup 40, so that normal infusion is carried out, any manual operation is not needed, the working efficiency of medical personnel is improved, and the working strength of the medical personnel is reduced. Due to the arrangement of the liquid stopping device 42, air can be effectively prevented from entering the infusion pipeline, so that the time arrangement of the medical staff for ending infusion or replacing liquid medicine is more flexible, and the working efficiency of the medical staff is improved.

Claims

1. Automatic liquid infusion set ends, including dripping kettle (40), drip kettle (40) and have input port (41) and delivery outlet (45), its characterized in that: the inner wall of the drip cup (40) is fixedly connected with a liquid stopping device (42), a cavity chamber (47) with a closed upper end and an opening facing an output port (45) of the drip cup (40) is formed inside the liquid stopping device (42), a floating ball (44) is arranged in the cavity chamber (47), and the lower end of a cavity chamber (48) in the liquid stopping device (42) is funnel-shaped;

one side of the outer wall of the liquid stopping device (42) is sunken inwards to form a first channel (420) with the inner wall of the drip cup (40), the first channel (420) starts from an input port (41) of the drip cup (40) and ends at the bottom end of the inner wall of the drip cup (40), the middle-lower section of the other side of the outer wall of the liquid stopping device (42) is sunken inwards to form a second channel (421) with the inner wall of the drip cup (40), the second channel starts from the bottom end of the inner wall of the drip cup (40) and ends at the stepped surface of the middle-lower section of the other side of the outer wall of the liquid stopping device (42), the first channel (420) and the second channel (421) are arranged oppositely, a liquid inlet hole (46) is formed in the outer wall surface of the second channel (421) opposite to the liquid stopping device (42), and the liquid inlet hole (46); a blocking piece (43) is arranged in the hollow chamber (47), the height of the blocking piece (43) is slightly lower than that of the liquid inlet hole (46), the floating ball (44) is arranged below the blocking piece (43) in the hollow chamber (47), a plurality of through holes are uniformly distributed in the blocking piece (43), and the diameter of each through hole is smaller than that of the floating ball (44).

2. The automatic liquid-stopping infusion set according to claim 1, wherein: the diameter of the floating ball (44) is larger than or equal to the diameter of the output end of the hollow chamber (47).

3. The automatic liquid-stopping infusion set according to claim 2, wherein: the floating ball (44) is a spherical or inverted conical floating ball.

4. The automatic liquid-stopping infusion set according to claim 3, wherein: the density of the floating ball (44) is lower than that of all liquid medicines used for transfusion or lower than that of water.

5. The automatic liquid-stopping infusion set according to claim 1, wherein: the wall thickness of the outer wall of the drip cup (40) is the same as that of the outer wall of the liquid stopping device (42), PET or PP without plasticizer is adopted, and a transparent or semitransparent ultraviolet-proof layer is uniformly coated on the outer wall of the drip cup (40).

6. The automatic liquid-stopping infusion set according to claim 1, wherein: the cross section of the first channel (420) or the second channel (421) which corresponds to the inward sinking of the outer wall of the liquid stopping device (42) is arc-shaped or triangular.