CN109481795B - Double liquid-stopping self-exhausting safety dropping funnel - Google Patents

Double liquid-stopping self-exhausting safety dropping funnel Download PDF

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Publication number
CN109481795B
CN109481795B CN201811634489.2A CN201811634489A CN109481795B CN 109481795 B CN109481795 B CN 109481795B CN 201811634489 A CN201811634489 A CN 201811634489A CN 109481795 B CN109481795 B CN 109481795B
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China
Prior art keywords
floating body
liquid
hole
exhausting
liquid medicine
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CN201811634489.2A
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CN109481795A (en
Inventor
雷冰
陈浩
代永祥
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Sichuan Prius Biotechnology Co ltd
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Sichuan Prius Biotechnology Co ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
    • A61M5/40Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body using low-level float-valve to cut off media flow from reservoir

Abstract

The invention discloses a double liquid-stopping self-exhausting safe dropping funnel, which solves the problem that the existing planar membrane is easy to deform and shift in the processes of assembly, sterilization and use, and the liquid-stopping effect of the dropping funnel is affected. The invention comprises a shell and a floating body, wherein a liquid inlet is formed in the upper end of the shell, a liquid outlet is formed in the bottom of the shell, the floating body is positioned in the shell, the floating body comprises an upper floating body and a lower floating body which is detachably connected with the upper floating body, a bottom film is arranged at the bottom of the lower floating body, the lower floating body comprises a plug-in connection part, the plug-in connection part comprises a plug-in board and a stand column which is vertically arranged in the middle of the plug-in board, a through hole is formed in the stand column in a penetrating manner along the axial direction, the through hole comprises a central hole and a side hole, the upper floating body comprises a central shaft, and the central shaft is plugged in the central hole. The invention has the advantages of good sealing performance of the bottom film, good liquid stopping effect of the dropping funnel, and the like.

Description

Double liquid-stopping self-exhausting safety dropping funnel
Technical Field
The invention relates to the technical field of infusion apparatuses, in particular to a double-liquid-stopping self-exhausting safe dropping funnel.
Background
The dropping funnel is one of key components of the infusion apparatus, can observe the output speed of the liquid medicine through the dropping funnel, can judge whether to block, whether the liquid medicine is completely infused or not and other important information, and has important significance for ensuring the safety of infusion patients.
However, even if the dropping funnel exists, the situation that the medical liquid in the dropping funnel cannot be timely noticed due to carelessness is avoided, when the medical liquid is completely infused, if the needle is not timely pulled out, air can enter, if the air enters the blood vessel along the infusion tube, embolism can be caused, death can be caused in serious cases, and therefore, the setting of the dropping funnel capable of stopping the medical liquid has important significance for preventing risks.
In order to solve this problem, a great deal of research has been conducted, and a patent such as CN102813984B, CN102813983B, CN103800963B has been issued.
In the prior art, a floating body structure is adopted to drive a planar membrane to seal a liquid outlet so as to realize automatic liquid stopping, but in actual conditions, local gaps can occur on the planar membrane due to the influence of a specific floating body structure and an assembly process, so that the final tightness is influenced, and therefore, how to strengthen the fixation of the planar membrane and ensure the tightness of the planar membrane is a problem to be overcome by a safe drip chamber.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the existing planar membrane is easy to deform and shift in the processes of assembly, sterilization and use, and the liquid stopping effect of the dropping funnel is affected.
The invention provides a double liquid-stopping self-exhausting safe dropping funnel which solves the problems.
The invention is realized by the following technical scheme:
the utility model provides a dual liquid stopping self-exhausting safety dropping funnel, includes casing and body, the casing upper end sets up the inlet, the bottom of casing sets up the liquid outlet, the body is located in the casing, the body include the body and with go up the body and dismantle the lower body of being connected, the bottom of body sets up the basement membrane down, the body includes grafting portion down, grafting portion includes the plugboard and sets up perpendicularly the stand in plugboard middle part, the stand runs through along the axial and sets up the through-hole, the through-hole includes centre bore and side opening, go up the body and include the center pin, the center pin peg graft in realize the connection of body and body down in the centre bore.
The design principle of the invention is as follows: the structure comprises an upright post, an upper floating body, a central hole, a bottom film, a plug board, a sealing cavity, a side hole, a through hole, a central hole, a sealing cavity and a sealing cavity, wherein the upright post of the lower floating body is axially provided with the through hole; on the other hand, in the process of negative pressure sterilization, the problem that the pressure of the sealing cavity is larger than the negative pressure outside the floating body to generate outward pressure on the bottom film to deform and fall off can be avoided. The side hole penetrates from the sealing cavity to the top of the upright post, the side hole is positioned below the top of the upper floating body and has a certain gap with the inner side of the top of the upper floating body, namely, the side hole is in a shielded but non-blocking state, when in transfusion, liquid medicine drops on the top of the upper floating body and cannot enter the side hole, in addition, when in transfusion, the floating force generated by the liquid medicine enables the floating body to float, the side hole is always positioned above the liquid level, and no liquid medicine enters the sealing cavity along the side hole.
The invention discloses a double-liquid-stopping self-exhausting safe dropping funnel, which is characterized in that the lower floating body further comprises an annular base, a flange in the horizontal direction is arranged at the bottom of the annular base, a bottom film is placed on the flange, and a plug board is clamped into the annular base to fasten the bottom film.
Further, a convex ring is arranged at the bottom of the plug board, after the plug board is clamped into the annular base, the convex ring pushes the bottom film on the flange to tightly fix the bottom film, and a cavity is formed between the bottom film and the central shaft.
The invention preferably discloses a double-liquid-stopping self-exhausting safe dropping funnel, the side holes are communicated with two sides of the central hole, so that when a central shaft is inserted into the through hole in the assembly process, air pressure is firstly generated at the inserted part, and the side holes are communicated with the through hole, so that the air pressure generated by the insertion of the central shaft along the through hole can be immediately discharged through the side holes, thereby preventing the expansion deformation displacement of a bottom film and the like caused by high air pressure in a sealing cavity.
The invention preferably discloses a double-liquid-stopping self-exhausting safe dropping funnel, the size of the side hole is gradually reduced from the outer side direction of the central hole until the side hole is closed, the structure formed in the way can exhaust well, when the liquid medicine reaches the side hole, under the condition that the surface tension of water is the same, the effective spherical radius of the liquid medicine drops entering the side hole is reduced by the tip structure, the additional pressure which needs to be overcome is increased, the liquid medicine is difficult to enter the side hole, and the waterproof and air-exhausting functions are achieved.
The invention discloses a double-liquid-stopping self-exhausting safe dropping funnel, wherein the lower end of an upper floating body is provided with an outwards convex arc structure, a sealing ring is arranged between the inner side of the upper floating body and a stand column, and the diameter of the sealing ring is larger than the distance between the bottom of the upper floating body and the outer side of the stand column, so that the sealing ring can fall between the upper floating body and a lower floating body to seal the gap between the upper floating body and the lower floating body.
The invention preferably discloses a double liquid stopping self-exhausting safe dropping funnel, wherein a thin groove is arranged on the side wall of a stand column, when the liquid medicine is quickly conveyed, the liquid medicine in the dropping funnel is gradually reduced, when the liquid medicine outside a floating body is lower than the liquid level in an upper floating body cavity, the liquid medicine in the upper floating body cavity can slowly flow down along the thin groove, and the outflow speed of the liquid medicine in the upper floating body cavity can be regulated and controlled through the size and the number of the thin groove.
The design principle of the invention is as follows: the floating body is arranged to be of a circular arc structure with the lower end protruding outwards, the sealing ring is arranged in the circular arc structure, when the liquid medicine is in the dropping funnel, the floating body floats upwards under the action of the buoyancy force, when the floating body floats upwards to the baffle ring, the baffle ring can be limited by the baffle ring and cannot continue to rise, at the moment, the liquid medicine can enter the cavity of the floating body to lift the sealing ring, a gap exists between the sealing ring and the inner side of the floating body and the outer side of the upright post of the lower floating body, the liquid medicine can continuously enter until the liquid medicine reaches the same liquid level as the liquid medicine outside the floating body, when the liquid medicine gradually decreases, the liquid medicine surface outside the floating body gradually decreases along with the descending of the liquid medicine, when the liquid medicine descends to the position where the buoyancy force borne by the sealing ring is smaller than the sum of the gravity of the liquid medicine at the upper part, the sealing ring can rapidly descend, when the sealing ring descends to contact the inner side of the floating body and the outer side of the lower upright post of the floating body, the sealing ring is locked, the liquid medicine in the floating body can flow out of the whole body more quickly due to the existence of the gravity of the floating body, the liquid medicine can reach the bottom film to the liquid medicine can reach the bottom opening of the lower body and the sealed liquid medicine can flow out of the hollow body even if the liquid medicine gradually flows out of the hollow body is further and can not flow out of the hollow body.
And when the subsequent needs continue to infuse, new liquid enters the drip chamber, when the liquid level reaches the sealing ring, and when the gravity of the sealing ring is greater than the buoyancy of the liquid medicine, the sealing ring is still in a relatively sealed state, the liquid can not enter or can only enter in a small amount, at the moment, the upper floating body cavity is mainly filled with air, the buoyancy force born by the floating body is larger relative to the open cavity structure, and the bottom film is beneficial to separating from the liquid outlet.
The invention preferably provides a double-liquid-stopping self-exhausting safe dropping funnel, wherein a baffle plate is arranged above the position with the largest distance from the upright post to the inner side of the upper floating body, so that the maximum height of the sealing ring under the action of the buoyancy of liquid medicine is limited at the position with the largest size of a floating body cavity, and the liquid medicine is facilitated to enter.
The invention preferably provides a double liquid-stopping self-exhausting safe dropping funnel, wherein convex ribs are arranged on the outer side wall of an annular base, the number of the convex ribs is at least 3 and are distributed at intervals, and the convex ribs and the inner wall of a shell are small, so that a floating body can move and can always move up and down along the shell without deviation, and the bottom film is ensured to seal liquid-stopping better.
The invention preferably provides a double-liquid-stopping self-exhausting safe dropping funnel, wherein a baffle ring is arranged on the inner side of a shell, and a retainer ring is arranged at the bottom of an upper floating body, so that the floating body can be prevented from floating up to a liquid inlet to stop dropping liquid.
Further, the bottom film is silica gel.
The invention has the following beneficial effects:
1. the side holes are arranged in the upright post of the lower floating body and are used for exhausting air during assembly and negative pressure sterilization, so that the problems of expansion, deformation, falling and the like of the bottom film are effectively prevented.
2. The side hole is communicated with the central hole and gradually reduces from the outer side of the central hole until the side hole is closed, so that not only can enough space be reserved for exhausting, but also the difficulty of liquid medicine entering is increased because the tip structure enables the additional pressure to be overcome when liquid medicine drops enter the side hole even if the liquid medicine reaches the side hole, and the liquid medicine entering is better prevented.
3. According to the invention, the lower end of the upper floating body is provided with the convex arc-shaped structure, the buffer storage of the liquid medicine in the upper floating body cavity is realized by arranging the sealing ring, the gravity of the floating body is increased, so that the floating body can block the liquid outlet earlier, meanwhile, the liquid medicine flowing out along the thin groove can relieve the air from entering, in addition, when new liquid medicine is added again, the sealing ring can prevent the liquid medicine from entering the upper floating body cavity too early and reserving longer air, and the liquid medicine is beneficial to being added to increase the buoyancy of the floating body, so that the bottom film is better separated from the liquid outlet for re-transfusion.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
fig. 1 is a schematic cross-sectional view of a first embodiment of the present invention.
Fig. 2 is a schematic bottom view of a plugging portion according to a second embodiment of the invention.
Fig. 3 is a schematic cross-sectional view of a third embodiment of the present invention.
Fig. 4 is a schematic front view of a plugging portion according to a third embodiment of the present invention.
In the drawings, the reference numerals and corresponding part names:
1-shell, 2-upper floating body, 20-central shaft, 3-lower floating body, 30-plugboard, 300-bulge loop, 31-stand column, 310-central hole, 311-side hole, 32-annular base, 320-flange, 4-bottom film, 5-sealing ring, 6-baffle, 7-baffle ring, 8-retainer ring, 9-bulge rib, 10-thin groove, 11-liquid inlet and 12-liquid outlet.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The utility model provides a dual liquid stopping self-exhausting safety dropping funnel, includes casing 1 and body, casing 1 upper end sets up inlet 11, casing 1's bottom sets up liquid outlet 12, the body is arranged in casing 1, the body include go up body 2 and with go up body 2 detachable lower body 3 of being connected, lower body 3's bottom sets up basement membrane 4, lower body 3 includes grafting portion, grafting portion includes pinboard 30 and sets up perpendicularly the stand 31 at pinboard 30 middle part, stand 31 runs through along the axial and sets up the through-hole, the through-hole includes centre bore 310 and side opening 311, go up body 2 includes center pin 20, center pin 20 peg graft in realize the connection of body 2 and lower body 3 in the centre bore 310.
The central hole 310 is located along the central axis of the upright 31 so that the float remains balanced throughout its movement.
The top of the upper floating body 2 is provided with a circular arc head, so that the splashing condition of the liquid medicine when the liquid medicine is dripped from the liquid inlet pipe 11 can be relieved.
The vertical column 31 of the lower floating body 3 is axially provided with a through hole, the upper floating body 2 is provided with a central shaft 20 matched with the through hole, the central shaft 20 is inserted into the central hole 310, the connection of the upper floating body 2 and the lower floating body 3 is realized, a sealing cavity is formed by the bottom film 4, the plug board 30 and the central shaft 20, a side hole 311 is also arranged in the axial direction of the vertical column 31, the side hole 311 is communicated with the sealing cavity and the outside of the floating body, and the structure can prevent the pressure generated by the space reduction of the sealing cavity in the process of inserting the central shaft 20 into the through hole in the assembly process, and the pressure expands the bottom film 4, so that the bottom film 4 falls off in severe cases; on the other hand, in the process of negative pressure sterilization, the problem that the pressure of the sealing cavity is larger than the negative pressure outside the floating body to generate outward pressure on the bottom film 4 to deform and fall off can be avoided. The side hole 311 penetrates from the sealing cavity to the top of the upright column 31, the side hole 311 is positioned below the top of the upper floating body 2, a certain gap is formed between the side hole 311 and the inner side of the top of the upper floating body 2, namely, the side hole 311 is in a shielded but non-blocking state, when in transfusion, liquid medicine drops on the top of the upper floating body 2 and cannot enter the side hole 311, in addition, when in transfusion, the floating force generated by the liquid medicine enables the floating body to float, the side hole 311 is always positioned above the liquid level, and no liquid medicine enters the sealing cavity along the side hole 311.
The lower floating body 3 further comprises an annular base 32, a flange 320 is arranged at the bottom of the annular base 32, the bottom film 4 is placed on the flange 320, and the plug board 30 is clamped into the annular base 32 to fasten the bottom film 4.
The bottom of the plug board 30 is provided with a convex ring 300, after the plug board 30 is clamped into the annular base 32, the convex ring 300 pushes the bottom film 4 on the flange 320 to tightly fix the bottom film 4, and a cavity is formed among the convex ring 300, the bottom film 4 and the central shaft 20.
The side holes 311 are communicated with the two sides of the central hole 310, so that when the central shaft 20 is inserted into the through hole in the assembly process, air pressure is firstly generated at the insertion part, and because the side holes 311 are communicated with the through hole, the air pressure generated by the insertion of the central shaft 20 along the through hole can be immediately discharged through the side holes 311, so that the expansion deformation displacement of the bottom film 4 and the like caused by high air pressure in the sealing cavity are prevented, in addition, the side holes 311 are communicated with the through hole, and the hole can be formed once when the hole is formed in the processing of the hole, so that the process is simple.
The bottom film 4 is silica gel.
Example 2
The difference between this embodiment and embodiment 1 is that the size of the side hole 311 gradually decreases from the outer side of the central hole 310 until it is closed, so that the structure formed can exhaust well, and when the liquid medicine reaches the side hole 311, the effective spherical radius of the liquid medicine drop entering the side hole 311 is reduced by the tip structure under the condition that the surface tension of the water is the same, the additional pressure to be overcome is increased, so that the liquid medicine is difficult to enter the side hole 311, and the waterproof and air-exhausting effects are achieved.
Example 3
The difference between this embodiment and embodiment 2 is that the lower end of the upper floating body 2 is provided with a convex arc structure, a sealing ring 5 is provided between the inner side of the upper floating body 2 and the upright post 31, and the diameter of the sealing ring 5 is larger than the distance between the bottom of the upper floating body 2 and the outer side of the upright post 31, so that the sealing ring 5 can drop between the upper floating body 2 and the lower floating body 3 to seal the gap.
The side wall of the upright post 31 is provided with a thin groove 10, after the liquid medicine is quickly infused, the liquid medicine in the dropping funnel gradually decreases, when the liquid medicine outside the floating body is lower than the liquid level in the upper floating body cavity, the liquid medicine in the upper floating body cavity can slowly flow down along the thin groove 10, and the outflow speed of the liquid medicine in the upper floating body cavity can be regulated and controlled through the size and the number of the thin groove 10.
The upper floating body 2 is arranged to be of an arc structure with the lower end protruding outwards, the sealing ring 5 is arranged in the arc structure, when liquid medicine is in the dropping funnel, the floating body floats upwards under the action of buoyancy, when the floating body floats upwards to the baffle ring 7, the baffle ring 8 can be limited by the baffle ring 7 and cannot continue to ascend, at the moment, the liquid medicine can enter into the cavity of the upper floating body to lift the sealing ring 5, a gap exists between the sealing ring 5 and the inner side of the upper floating body 2 and the outer side of the upright post 31 of the lower floating body 3, the liquid medicine can continuously enter until the liquid medicine is the same as the liquid level outside the floating body, when the liquid medicine gradually decreases, the liquid medicine surface outside the floating body gradually decreases, the floating body descends along with the descending of the liquid medicine, when the liquid medicine descends to the buoyancy borne by the sealing ring 5 is smaller than the gravity of the upper liquid medicine, and the sealing ring 5 rapidly descends when the sealing ring 5 descends to be contacted with the inner side of the upper floating body 2 and the outer side of the upright post 31 of the lower floating body 3, the liquid medicine in the floating body is locked, the liquid medicine in the cavity is more rapidly due to the existence of the whole gravity is increased, the liquid medicine can flow out of the whole body is more rapidly, and the liquid medicine can not flow out of the upright post 31 and reaches the whole air channel, and the liquid medicine can flow well below the bottom channel is more gradually, even the liquid medicine can flow out from the bottom channel is more gradually and the liquid medicine can flow down to the liquid medicine 3.
And when the follow-up needs to continue the infusion, new liquid enters the shell 1, and when the liquid level reaches the sealing ring 5, the sealing ring 5 is still in a relatively sealed state because the gravity of the sealing ring 5 is greater than the buoyancy of the liquid medicine, and the liquid can not enter or can only enter in a small amount, at the moment, the cavity of the upper floating body 2 is mainly filled with air, and the buoyancy of the floating body is large relative to the open cavity structure, so that the bottom film 4 is beneficial to separating from the liquid outlet 12.
The stand column 31 is arranged above the position with the largest distance from the inner side of the upper floating body 2, and is provided with a baffle 6, so that the maximum height of the sealing ring 5, which can be reached under the action of the buoyancy of the liquid medicine, is limited at the position with the largest size of the floating body cavity, and the liquid medicine can enter the floating body cavity conveniently.
Set up protruding muscle 9 on the lateral wall of annular base 32, protruding muscle 9 be 6 and evenly distributed in the outside of annular base 32, protruding muscle 9 with the inner wall clearance of casing 1 is little for the body can be movable and can remain all the time along casing 1 up-and-down motion can not squint, guarantees that carrier film 4 seals the liquid that ends better.
The inner side of the shell 1 is provided with a baffle ring 7, and the bottom of the upper floating body 2 is provided with a retainer ring 8, so that the floating body can be prevented from floating up to the liquid inlet 11 to block liquid drops.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (7)

1. The utility model provides a dual liquid stopping self-exhausting safe dropping funnel, includes casing (1) and body, casing (1) upper end sets up inlet (11), the bottom of casing (1) sets up liquid outlet (12), the body is located in casing (1), the body include go up body (2) and with go up body (2) detachable lower body (3) of being connected, the bottom of lower body (3) sets up carrier film (4), a serial communication port, lower body (3) include grafting portion, grafting portion includes pinboard (30) and sets up perpendicularly stand (31) at pinboard (30) middle part, stand (31) are run through along the axial and are set up the through-hole, the through-hole includes centre bore (310) and side opening (311), go up body (2) include center pin (20), center pin (20) peg graft in centre bore (310).
The lower end of the upper floating body (2) is provided with an outwards convex arc structure, a sealing ring (5) is arranged between the inner side of the upper floating body (2) and the upright post (31), and the diameter of the sealing ring (5) is larger than the distance between the bottom of the upper floating body (2) and the outer side of the upright post (31);
the side wall of the upright post (31) is provided with a thin groove (10);
the bottom of the plugboard (30) is provided with a convex ring (300).
2. The double-liquid-stopping self-exhausting safe drip chamber according to claim 1, wherein the lower floating body (3) further comprises an annular base (32), a flange (320) is arranged at the bottom of the annular base (32), the bottom film (4) is placed on the flange (320), and the plug board (30) is clamped into the annular base (32) to fasten the bottom film (4).
3. A dual liquid stop self venting safety drip chamber as claimed in claim 1 or 2 wherein said side holes (311) are through the sides of said central hole (310).
4. A dual liquid stop self venting safety drip chamber as claimed in claim 1 or 2 wherein said side aperture (311) decreases in size from the central aperture (310) to the outside until closed.
5. The double-liquid-stopping self-exhausting safe dropping funnel according to claim 1, wherein the stand column (31) is arranged above the position with the largest distance from the inner side of the upper floating body (2) to be provided with a baffle (6).
6. The double-liquid-stopping self-exhausting safe drip chamber according to claim 2, wherein ribs (9) are arranged on the outer side wall of the annular base (32), and the ribs (9) are at least 3 and distributed at intervals.
7. The double-liquid-stopping self-exhausting safe drip chamber according to any one of claims 1, 2 or 5-6, wherein a baffle ring (7) is arranged on the inner side of the shell (1), and a retainer ring (8) is arranged at the bottom of the upper floating body (2).
CN201811634489.2A 2018-12-29 2018-12-29 Double liquid-stopping self-exhausting safety dropping funnel Active CN109481795B (en)

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Publication number Priority date Publication date Assignee Title
JP3163771U (en) * 2010-08-20 2010-10-28 賢宗 汪 Infusion device
CN102772842A (en) * 2012-08-06 2012-11-14 戴建达 Safe and automatic hydraulic control opening and closing valve and infusion apparatus with safe and automatic hydraulic control opening and closing valve
CN102813984A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus
CN102813983A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
CN103083752A (en) * 2013-01-30 2013-05-08 戴建达 Automatic solution stopping mechanism and infusion apparatus with the same
CN204106756U (en) * 2014-08-06 2015-01-21 安徽宏宇五洲医用器材有限公司 A kind of automatic liquid-stopping transfusion apparatus
CN106823038A (en) * 2015-12-07 2017-06-13 黄超 A kind of soft floating body automatic liquid-stopping transfusion apparatus of limiting platform
CN210542724U (en) * 2018-12-29 2020-05-19 四川普瑞斯生物科技有限公司 Dual-liquid-stopping self-exhaust safe dropping funnel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8480635B2 (en) * 2010-03-04 2013-07-09 Hsien-Tsung Wang Automatic intravenous fluid flow control device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3163771U (en) * 2010-08-20 2010-10-28 賢宗 汪 Infusion device
CN102772842A (en) * 2012-08-06 2012-11-14 戴建达 Safe and automatic hydraulic control opening and closing valve and infusion apparatus with safe and automatic hydraulic control opening and closing valve
CN102813984A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus
CN102813983A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
CN103083752A (en) * 2013-01-30 2013-05-08 戴建达 Automatic solution stopping mechanism and infusion apparatus with the same
CN204106756U (en) * 2014-08-06 2015-01-21 安徽宏宇五洲医用器材有限公司 A kind of automatic liquid-stopping transfusion apparatus
CN106823038A (en) * 2015-12-07 2017-06-13 黄超 A kind of soft floating body automatic liquid-stopping transfusion apparatus of limiting platform
CN210542724U (en) * 2018-12-29 2020-05-19 四川普瑞斯生物科技有限公司 Dual-liquid-stopping self-exhaust safe dropping funnel

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