CN104689411A - Novel universal medical infusion head with automatic infusion bottle changing function - Google Patents
Novel universal medical infusion head with automatic infusion bottle changing function Download PDFInfo
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- CN104689411A CN104689411A CN201510146603.7A CN201510146603A CN104689411A CN 104689411 A CN104689411 A CN 104689411A CN 201510146603 A CN201510146603 A CN 201510146603A CN 104689411 A CN104689411 A CN 104689411A
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- transfusion
- liquid
- valve
- bottle
- float
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
- A61M2005/1623—Details of air intake
Abstract
The invention relates to a novel universal medical infusion head with an automatic infusion bottle changing function. The infusion head comprises an infusion head body, two passages arranged on the infusion head body, a floater valve chamber, a liquid inlet tube and a liquid outlet tube, wherein the two passages are an air-liquid passage and a liquid passage, the top ends of the two passages are communicated into a bottle or bag, and a valve is disposed on each passage; the bottom-end opening of the air-liquid passage is formed in the top of the floater valve chamber, and the bottom-end opening of the liquid passage is formed in the liquid outlet tube; a floater with two valve rods at the top is disposed in the floater valve chamber, and a liquid outlet communicated with the liquid outlet tube is formed in the bottom of the floater valve chamber; the two valve rods on the floater respectively correspond to the valves on the two passages, and the bottom end of the floater faces directly to the liquid outlet. The novel universal medical infusion head has the advantages that the two valves are driven by one floater, and the two valves of two valve chambers are opened and closed synchronously; by the three openings of the valve chambers, floater valve movements and a liquid passage directly communicating to the liquid outlet tube, suction force in the tube is fully utilized, and pulse infusion is achieved.
Description
Technical field
The present invention relates to the infusion set of medical industry, refer in particular to a kind of when realizing many bottles of soft bottles, many bottles of hard bottles or many bottles of soft or hard bottles mixing transfusion the continue novel universal type medical infusion of liquid of automatic decanting automatically to continue liquid transfusion head.
Background technology
In medical industry, continuous transfusion is also uncommon, single bottle of traditional transfusion, manually changes bottle, brings great labor intensity to medical worker, easily because casual carelessness causes some malpracticees yet.In order to solve the problem, realize continuous transfusion automatic decanting object, present inventor have developed the several generations product of the liquid that can realize automatically continuing.
Patent of invention ZL2012104089744 " the double passage transfusion head that a kind of automatic control liquid, gas divide phase to input ", although have employed two channels designs and ball float control, but the program can not be used for the transfusion of soft bag, because soft bag does not need air inlet, just start transfusion as long as be communicated with.All liq bottle can be caused to infuse if this is designed for soft bag liquid simultaneously, cause all liq to mix further, cause security incident.In addition, the inlet end of a bottle also can cause liquid to backflow to cause excessive because of law of connected vessels at first, causes waste.And the program float valve design cause the strength of closing very little, far can not the pressure of liquid in the soft bottle of facedown, therefore float valve structure needs to improve.
Present inventor also specially devises automatic decanting device for soft bottle transfusion, application number 2014107308437 disclosed " a kind of liquid transfusion head that automatically continues for soft bag infusion ", the transfusion utilizing improved float valve (ingenious be counteracted that the fluid pressure that soft bottle liquid is huge) to realize current soft bottle is waited for, wait for when last bottle input air makes ball float sinking valve open remove transfusion, realize the automatic decanting of soft bottle transfusion.But this theory structure can not be applicable to the automatic decanting demand of hard bottle transfusion simultaneously.
In order to meet general requirement, present inventor improves again, patent application 201410730840.3 " a kind of universal liquid transfusion head that automatically continues " discloses a kind of transfusion header structure being applicable to soft, hard infusion vessel, attempt the principle of integration two kinds of physical control automatic decantings, namely control hard bottle liquid in due course air inlet to realize hard bottle transfusion automatic decanting, and allow soft bag below realize transfusion wait, and stop waiting for these the two kinds of automatic decanting principles of automatic decanting realizing the transfusion of soft bottle in good time.Also to prevent liquid from backflowing during certain soft bottle transfusion.But in reality processing and use, find that this universal design also exists some problems.Such as: the structure employing Liang Ge valve box and two valves, add manufacture difficulty of processing, reduce working (machining) efficiency, and the less buoyancy of ball float is not enough.The valve opening and closing of Liang Ge valve box can not be accomplished synchronously, cause the air when the transfusion of hard bottle to enter the valve box near feed tube but the valve near drain pipe is not opened (not having air to enter), at this moment the opening of all connection drain pipes is all closed and is caused transfusion to suspend.Even if solve valve synchronous after (as at ball float bottom rigid connection, in interval, valve box, opening the movement slots of rigid connection bar) when can not realize the transfusion of hard bottle after two valves are opened simultaneously, effectively realize continuous transfusion.Because so synchronous valve design can cause the air entered in last valve box can after the movement slots of bottom, interval, valve box enters in a valve box, and produce two consequences, one is that the gas entered in a rear valve box directly may enter drain pipe, and gas can be caused to enter in human body; Even if two is that gas does not flow into drain pipe and flows to the pipeline tapping on top, valve box, in this bottle that also can affect this opening, liquid flows out, because the air pressure of former and later two valve box's top end openings is equal, liquid does not flow out.
In sum; in last generation, product can not be used for soft bag infusion; the transfusion of hard bottle can only be used for; and also having bleeding trouble in actual use, head of infusing seals defects such as (not so have gas through the opening of transfusion crown end and enter drain pipe) when not inserting in infusion bottle with transfusion head protection cover.And the design being applied to soft bottle automatic decanting can not simultaneously for automatic decanting that hard bottle is infused.The universal product of next generation is at the hard bottle of integration, have breakthrough in soft bottle automatic decanting principle, but defect is also comparatively obvious, and original basis is carried out minor modifications (as rigid connection makes valve synchronous) can not thoroughly deal with problems.Therefore the original combination thoughts of the universal product of next generation will be broken, on the basis of float valve physical control, emphasis solves two problems, one is valve stationary problem, two is that the fluid passage that another side is opened when inlet channel is opened on one side is wanted initiatively from pumping liquid in bottle, air is additionally related to multi-functional passive entry in bottle and (is certain to like this in bottle because gas can not initiatively enter and causes transfusion to stop).
Summary of the invention
The object of the invention is for the shortcoming existed in background technology and problem improvement and bring new ideas in addition, automatic decanting principle when reintegrating the transfusion of soft, hard bottle, provides a kind of by changing float valve cell structure and lose-lose liquid expanding channels structure realizes soft, hard infusion vessel automatic decanting, the novel universal type medical infusion of continuous transfusion continues automatically liquid transfusion head.
Technical scheme of the present invention is that structure one includes transfusion head main body, is arranged on the two passes on transfusion head main body, is arranged on the float valve room of transfusion head main body bottom, with the transfusion head of liquid inlet and outlet pipe being communicated with float valve room, wherein:
Described two passes is gas-liquid double-purpose passage and fluid passage, and the top of two passages is all communicated in bottle bag, and two passages are provided with valve; Wherein the bottom end opening of gas-liquid double-purpose passage is arranged on the top of float valve room, and the bottom end opening of fluid passage is arranged on drain pipe;
Described float valve number of chambers amount is set to one, and its indoor are provided with the ball float of top tape two valve lever, is provided with a fluid opening be connected with drain pipe at the bottom of room; Valve on the corresponding two passes of two valve levers difference on described ball float, ball float bottom is just to fluid opening; Described ball float floating drive two valve lever uplink synchronous is closed two valves, is blocked two passes; Described ball float gravity sinking drive two valve lever down-going synchronous opens two valves, two passes leads to again, and descending ball float bottom surface and fluid openings contact are closed, and block this opening fluid simultaneously.
The bottom end opening of above-mentioned gas-liquid double-purpose passage, on top, valve box, only enters in valve box when liquid flows out through it.Aforesaid liquid passage is indoor without float valve, but is connected directly between on drain pipe by outlet bottom, is conducive to the suction force directly active pumping liquid in hard bottle that drain pipe is formed when hard bottle transfusion, the air in valve box is additionally related to multi-functional passive entry in rigid bottles.When hard bottle transfusion, suction force also can make the fluid closure of openings of ball float bottom better and bottom float valve room, prevents the gas in valve box from entering drain pipe, improves infusion safety.
In order to ensure effective outflow of effective admission and liquid, overcome reflux problem, wherein in an embodiment, described feed tube is communicated with in side, float valve room, and feed liquor tube wall end face and float valve locular wall end face are in same level; Described drain pipe is arranged on bottom float valve room, with the fluid open communication of bottom surface, float valve room.The matching design of this feed tube and float valve room, is conducive to air when hard bottle is infused and enters gas-liquid double-purpose passage smoothly; The matching design of drain pipe and valve box's fluid opening, can effectively prevent liquid return in drain pipe.
In order to pulsed when active suction force when making full use of the transfusion of hard bottle and the transfusion of soft bottle prevents the physical principle of backflowing, wherein in an embodiment, described side, float valve room arranges a feed tube entrance, top arranges a gas-liquid double-purpose channel inlet or fluid opening, bottom arranges a fluid open communication drain pipe, and float valve indoor arrange the ball float of a upper and lower motion; Its feed tube and gas-liquid double-purpose passage form the air inlet runner during transfusion of hard bottle.Gas-liquid double-purpose passage, float valve room, fluid opening and drain pipe etc. prevent the pulsed transfusion runner backflowed when coordinating the ball float of upper and lower motion to form the transfusion of soft bottle.Its fluid passage, drain pipe add the suction runner that the fluid opening closed when upper floating ball sinks forms liquid in energy active suction bottle when hard bottle is infused.In this example, float valve room is only provided with three openings, an open communication feed tube, an open communication gas-liquid double-purpose passage, an open communication drain pipe, and fluid passage is without float valve room; When head of infusing is used for the transfusion of hard bottle, gas enters valve box through last empty bottle, feed tube, ball float is floated downward and is synchronously led to two passes again, fluid opening simultaneously bottom the downward closing valve room of ball float, the liquid of flowing in the pipeline after this bottle produces huge active swabbing action by suction runner to the liquid in bottle, thus make the air in valve box be additionally related to multi-functional passive entry in bottle through air inlet runner, realize automatic decanting.When head of infusing is used for soft bag infusion (coordinating transfusion without the need to lasting air inlet), air enters valve box through last soft bag and feed tube, ball float is floated downward and is synchronously led to two passes again, and in soft bag, liquid finally flows into drain pipe through fluid passage and above-mentioned pulsed transfusion runner, realizes automatic decanting function.Its pulsed is prevented backflowing being embodied as of function: it is indoor and valve box's inner accumulated (because fluid opening is closed) that the liquid in soft bottle enters float valve through gas-liquid shared pathway, when the liquid in valve box soon enters feed tube, at this moment when buoyancy suffered by ball float is greater than its gravity, ball float floats, fluid opening is opened, liquid in valve box flows to drain pipe through fluid opening, when buoyancy is less than gravity, ball float sinking closes fluid opening again, achieves pulsed transfusion like this and also prevents liquid reflux to last soft bottle simultaneously.
Fluid passage of the present invention, drain pipe add the suction runner that the fluid opening closed when upper floating ball sinks forms liquid in energy active suction bottle when hard bottle is infused.Described fluid passage is directly communicated in drain pipe in bottle, bag, the fluid opening that drain pipe communicates with float valve room is simultaneously closed under ball float effect, after drain pipe, liquid forms suction force initiatively under continuing the effect of flowing in fluid passage and drain pipe, liquid exports through fluid passage, and air is additionally related to multi-functional passive entry in bottle through gas-liquid double-purpose passage.
The present invention's liquid that automatically continues is cascaded structure, the feed tube of namely described transfusion head main body connects the drain pipe of last transfusion head main body, the feed tube of a transfusion head main body after drain pipe connects, form the continuous transfusion head group of cascaded structure, the wherein feed tube access gas of the first transfusion head main body, the drain pipe of last transfusion head main body connects transfusion needle.The transfusion head group of described cascaded structure is when carrying out continuous transfusion, first the first transfusion head main body insertion infusion bottle or transfusion bag are started transfusion (to insert during soft bag, the soft pipeline for connecting need be extruded during hard infusion bottle, liquid in hard bottle is initiatively pumped out), when liquid flows through follow-up each transfusion head and full each float valve room successively, namely the equal rising synchronous of ball float of follow-up each transfusion head blocks two passages be opened in bottle of follow-up each transfusion head.After liquid enters human body, then in the infusion bottles to be conveyed such as follow-up each transfusion head insertion or transfusion bag, before to have infused the transfusion that will start in order below, realize automatic decanting, continuous transfusion.
The present invention adopts a float valve room and a floating ball structure, not only simplifies the structure, facilitates processing, but also add the volume of ball float, increase buoyancy, makes the opening and closing of valve more tightly, freely.The present invention's ball float drives two valves, accomplish the valve synchronous opening/closing of Liang Ge valve box dexterously, the scheme air when hard bottle transfusion solving the Liang Ge valve box of original design entered valve box near feed tube but near the valve of drain pipe do not open (not having air to enter) thus cause the problem suspended of infusing.Also after avoiding the rigid improvement synchronously of valve, the problem that the air intercommunication of Liang Ge valve box and air pressure balance cause transfusion to suspend.The present invention is by three openings of appropriate design valve box and coordinate float valve to move, and fluid passage is directly communicated to the design of drain pipe, the problem of backflowing when not only solving the transfusion of soft bottle, but also the fluid passage that when solving the transfusion of hard bottle, another side is opened when on one side inlet channel is opened wants active from pumping liquid in bottle, air is made to be additionally related to multi-functional passive entry problem in bottle.Compared to the design of Liang Ge valve box, though the present invention be the transfusion of soft bottle, the transfusion of hard bottle or soft or hard bottle mixing transfusion time its principle and path cheer and bright, neat and tidy, merge the principle (namely the air inlet of hard bottle controls to change a bottle principle, the timed wait principle of soft bottle) of soft or hard bottle transfusion automatic decanting preferably.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is key component decomposing schematic representation of the present invention.
Fig. 3 is valve-closed state structural representation of the present invention.
Fig. 4 is valve open state structural representation of the present invention.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.First-selected embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, the object of these embodiments is provided to be make to disclosure of the present invention more thoroughly comprehensively.
It should be noted that, when element is considered to " setting " on another element, it can be directly arrange or be connected on another element or may there is centering elements simultaneously.The transfusion of hard bottle or the transfusion of soft bottle refer to that present infusion head to insert in hard bottle or soft bottle and to infuse.
Unless otherwise defined, all technology used herein are identical with the implication that those skilled in the art of the present invention understand usually with scientific terminology.The term used in description, just in order to describe concrete enforcement object, is not intended to be restriction the present invention.
As shown in Figures 1 to 4, the concrete structure of transfusion head is as follows:
1, head main body of infusing only is provided with a float valve room 12, and indoor establish a ball float 1 to control two valve levers 2,21, realize synchronous open and close.
2, two passes: is gas-liquid double-purpose passage 4, its one end connects the pipeline tapping 8 opened in top, float valve room 12, and other end opening 6 is communicated in infusion bottle or transfusion bag.Another is fluid passage 5, its one end open 61 is communicated in infusion bottle or transfusion bag, the other end is then communicated with the fluid opening 7 be opened on drain pipe 11, fluid passage 5 is led directly in bottle after valve 31, liquid in active " suction " bottle under law of connected vessels effect, forces gas to enter in bottle through the valve 3 of gas-liquid double-purpose passage 4 through opening when hard bottle transfusion.
3, liquid-in pipe 10 is opened on the top of float valve room 12 sidewall, and when the liquid in valve box does not arrive liquid-in pipe 10 opening lower limb, ball float 1 floats and closes two valves.
4, drain pipe 11 is connected to the bottom of float valve room 12, and top communicates with the fluid opening 9 bottom valve box, and can close this fluid opening 9 when ball float 1 declines completely.
Ball float 1 stroke that drifts along meets the following conditions: when sinking (float valve indoor are full of air) completely, and valve 3,31 is opened completely and closed fluid opening 9 completely; When liquid level in float valve room 12 also not close to liquid-in pipe 10 when the lower edge of liquid-in pipe opening, ball float starts namely to start to float, until valve 3,31 is closed, fluid opening 9 is opened, and in float valve room 12, liquid flows into drain pipe 11 through fluid opening 9.
During hard bottle transfusion, air enters float valve room 12 from liquid-in pipe 10, ball float 2 sinks, close fluid opening 9, simultaneously valve 3,31 is synchronously opened, because fluid passage 5 and drain pipe 11 form a complete pipeline, and realize the effect of liquid in active " suction " bottle, make air enter gas-liquid double-purpose passage 4 through pipeline tapping 8 first and enter bottle, current hard bottle starts transfusion, automatic decanting success.
During soft bottle transfusion, when air enters in float valve room 12, valve 3,31 is synchronously opened, and the transfusion stopping current soft bottle is waited for, current bottle automatic decanting success, in bottle, liquid flows out through gas-liquid double-purpose passage 4 and fluid passage 5.Liquid through gas-liquid double-purpose passage 4 flows into float valve room 12, when amount of liquid reach a certain amount of after, ball float 1 rises, valve-off 3,31, and the liquid in valve box is flowed out through drain pipe 11 by fluid opening 9, after liquid declines again, valve 3,31 is synchronously opened, and liquid enters valve box, goes round and begins again, realize pulsed transfusion, and can prevent the liquid of valve box from refluxing through liquid-in pipe 10.
The work process of the continuous automatic infusion of the present invention:
First the first transfusion head is inserted infusion bottle or the transfusion bag of the first order, aerofluxus is not needed during soft bag, the soft pipeline for connecting need be extruded during hard infusion bottle, liquid in hard bottle is initiatively pumped out, air is additionally related to multi-functional passive entry in hard bottle, transfusion continues, liquid flows through each transfusion head follow-up successively by the drain pipe of the first transfusion head and fills and close double valve, follow-up each transfusion head all completes transfusion and waits for, to straight double valve of closing last transfusion head, liquid enters human body through transfusion needle again, at this moment head of being infused by postorder again inserts each infusion bottle or transfusion bag successively.Treat that the liquid in the infusion bottle of the first order or transfusion bag is totally lost, air complies with that to enter the second transfusion head valve door indoor, valve open, hard bottle then starts passive air inlet, and soft bottle then stops transfusion and waits for, current bottle transfusion starts, automatic decanting completes, and Subsequent infusions head proceeds transfusion and waits for.Complete automatic infusion in order in order successively like this.
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not design of the present invention and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various modification that in this area, engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (5)
1. novel universal type medical infusion automatically continue liquid transfusion a head, include transfusion head main body, be arranged on transfusion head main body on two passes, be arranged on transfusion head main body bottom float valve room, the liquid inlet and outlet pipe with being communicated with float valve room, is characterized in that:
Described two passes is gas-liquid double-purpose passage and fluid passage, and the top of two passages is all communicated in bottle bag, and two passages are provided with valve; Wherein the bottom end opening of gas-liquid double-purpose passage is at top, float valve room, and the bottom end opening of fluid passage is arranged on drain pipe;
Described float valve room arranges one, and its indoor are provided with the ball float of top tape two valve lever, is provided with a fluid opening be connected with drain pipe bottom valve box; Valve on the corresponding two passes of two valve levers difference on described ball float, ball float bottom is just to fluid opening; Described ball float floating drive two valve lever uplink synchronous is closed two valves, is blocked two passes; Described ball float gravity sinking drive two valve lever down-going synchronous opens two valves, two passes leads to again, and descending ball float bottom surface and fluid openings contact are closed, and block this opening fluid simultaneously.
2. novel universal type medical infusion according to claim 1 continues liquid transfusion head automatically, it is characterized in that described feed tube is communicated with in side, float valve room, and feed liquor tube wall end face and float valve locular wall end face is in same level; Described drain pipe is arranged on bottom float valve room, with the fluid open communication of bottom surface, float valve room.
3. novel universal type medical infusion according to claim 1 automatically continue liquid transfusion head, it is characterized in that described side, float valve room arranges a feed tube entrance, top arranges a gas-liquid double-purpose channel inlet or fluid opening, bottom arranges a fluid open communication drain pipe, float valve indoor arrange the ball float of a upper and lower motion, and its feed tube and gas-liquid double-purpose passage form air inlet runner required when hard bottle is infused; Gas-liquid double-purpose passage, float valve room, fluid opening and drain pipe prevent the pulsed transfusion runner backflowed when coordinating the ball float of upper and lower motion to form the transfusion of soft bottle.
4. novel universal type medical infusion according to claim 1 continues liquid transfusion head automatically, it is characterized in that described fluid passage, drain pipe adds when the fluid opening closed when upper floating ball sinks forms the transfusion of hard bottle can the initiatively suction runner of liquid in suction bottle.
5. novel universal type medical infusion according to claim 1 automatically continue liquid transfusion head, it is characterized in that the feed tube of described transfusion head main body connects the drain pipe of last transfusion head main body, the feed tube of a transfusion head main body after drain pipe connects, form the continuous transfusion head group of cascaded structure, the wherein feed tube access gas of the first transfusion head main body, the drain pipe of last transfusion head main body connects transfusion needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510146603.7A CN104689411B (en) | 2015-03-31 | 2015-03-31 | A kind of universal medical infusion is automatic after liquid transfusion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510146603.7A CN104689411B (en) | 2015-03-31 | 2015-03-31 | A kind of universal medical infusion is automatic after liquid transfusion head |
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| Publication Number | Publication Date |
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| CN104689411A true CN104689411A (en) | 2015-06-10 |
| CN104689411B CN104689411B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510146603.7A Expired - Fee Related CN104689411B (en) | 2015-03-31 | 2015-03-31 | A kind of universal medical infusion is automatic after liquid transfusion head |
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| CN (1) | CN104689411B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106421967A (en) * | 2016-10-27 | 2017-02-22 | 浙江理工大学 | Infusion system achieving automatic bottle replacing |
| CN108478896A (en) * | 2018-04-11 | 2018-09-04 | 刘玮 | Universal decompression and central controlled medical infusion automatic decanting device |
| CN113041661A (en) * | 2021-05-08 | 2021-06-29 | 陈灿 | Wastewater treatment equipment |
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| US3990443A (en) * | 1975-10-14 | 1976-11-09 | Data Service Co. Of America, Inc. | Drop rate sensing and regulating apparatus |
| US4534758A (en) * | 1983-07-15 | 1985-08-13 | Eli Lilly & Company | Controlled release infusion system |
| CN202844240U (en) * | 2012-10-24 | 2013-04-03 | 刘玮 | Two-channel infusion head capable of automatically controlling liquid and gas time-sharing phase input |
| CN104353156A (en) * | 2014-12-05 | 2015-02-18 | 刘玮 | Automatic liquid following infusion head for soft bag infusion |
| CN104383622A (en) * | 2014-12-05 | 2015-03-04 | 刘玮 | Universal infusion head with automatic infusion continuing function |
| CN204521792U (en) * | 2015-03-31 | 2015-08-05 | 刘玮 | A kind of novel universal type medical infusion continues liquid transfusion head automatically |
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2015
- 2015-03-31 CN CN201510146603.7A patent/CN104689411B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3990443A (en) * | 1975-10-14 | 1976-11-09 | Data Service Co. Of America, Inc. | Drop rate sensing and regulating apparatus |
| US4534758A (en) * | 1983-07-15 | 1985-08-13 | Eli Lilly & Company | Controlled release infusion system |
| CN202844240U (en) * | 2012-10-24 | 2013-04-03 | 刘玮 | Two-channel infusion head capable of automatically controlling liquid and gas time-sharing phase input |
| CN104353156A (en) * | 2014-12-05 | 2015-02-18 | 刘玮 | Automatic liquid following infusion head for soft bag infusion |
| CN104383622A (en) * | 2014-12-05 | 2015-03-04 | 刘玮 | Universal infusion head with automatic infusion continuing function |
| CN204521792U (en) * | 2015-03-31 | 2015-08-05 | 刘玮 | A kind of novel universal type medical infusion continues liquid transfusion head automatically |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106421967A (en) * | 2016-10-27 | 2017-02-22 | 浙江理工大学 | Infusion system achieving automatic bottle replacing |
| CN108478896A (en) * | 2018-04-11 | 2018-09-04 | 刘玮 | Universal decompression and central controlled medical infusion automatic decanting device |
| CN108478896B (en) * | 2018-04-11 | 2023-07-28 | 刘玮 | Universal type pressure-reducing and centralized-control automatic bottle changing device for medical transfusion |
| CN113041661A (en) * | 2021-05-08 | 2021-06-29 | 陈灿 | Wastewater treatment equipment |
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| CN104689411B (en) | 2017-05-31 |
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