CN106730316B - Anti-reflux multi-way tube for transfusion - Google Patents
Anti-reflux multi-way tube for transfusion Download PDFInfo
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- CN106730316B CN106730316B CN201611240186.3A CN201611240186A CN106730316B CN 106730316 B CN106730316 B CN 106730316B CN 201611240186 A CN201611240186 A CN 201611240186A CN 106730316 B CN106730316 B CN 106730316B
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- plug
- conical
- channel
- tube
- infusion
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Classifications
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M2039/0205—Access sites for injecting media
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
- A61M2039/0673—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof comprising means actively pressing on the device passing through the seal, e.g. inflatable seals, diaphragms, clamps
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a backflow-preventing multi-way tube for transfusion, which comprises: the upper end of the main pipe is provided with a liquid inlet used for being communicated with an infusion tube, and the lower end of the main pipe is provided with a liquid outlet used for being communicated with the infusion tube; the medicine adding branch pipe comprises a pipe body, a plug channel and a push plug, wherein one end of the pipe body is communicated with the side part of the main pipe, the plug channel is arranged at the other end of the pipe body, and the push plug is arranged in the plug channel in a matched mode; the plug channel comprises a cylindrical channel section and a conical channel section which are sequentially arranged from outside to inside; the push plug comprises a plug cap, a cylindrical plug body and a conical plug body which are sequentially connected with the plug cap. The anti-reflux multi-way tube for transfusion is provided with the push plug and the plug channel in the dosing branch tube, so that the leakproofness of the dosing branch tube can be always kept when the anti-reflux multi-way tube is used, the liquid reflux in the dosing branch tube can be effectively prevented, and the anti-reflux multi-way tube is simple in structure and convenient to use.
Description
Technical Field
The invention relates to the technical field of medical infusion equipment, in particular to an anti-reflux multi-way tube for infusion.
Background
In the clinical treatment of critically ill patients, certain drugs are often infused into the veins of the body using infusion or micro-pumps. Liquid or micro pumps require a "tee" connection to the iv needle. The clinical use of the tee has the following hidden troubles:
1. the drugs injected by the micro pump are often some drugs (such as pressure-boosting drugs or vasodilators) which have more severe influence on the physiological functions of human bodies. The micro-pump can control the speed of the medicine entering the human body to be very accurate dosage, and the medicine can be injected into the human body by a few tenths of milliliters to a few milliliters per hour. Infusion of critically ill patients often lasts for 24 hours to several days. In many cases, there may be a blockage between the needle and the tee, such as a patient in sleep may press the needle or tubing shut due to involuntary movement (e.g., turning over, etc.), and a needle blockage. At the moment, the micro pump still continuously injects the medicine, so that the medicine can reversely flow into the transfusion tube or the medicine bag for maintaining the liquid through the three-way valve and is accumulated. When the patient does not turn over autonomously again or the pressed infusion tube is returned to circulation by medical staff, the medicine which flows back into the infusion bag can be injected into the human body in a short time, the medicine which flows back into the infusion bag can be accumulated for a period of time, and after the circulation is returned again, the dosage of the medicine which is injected into the human body per minute can be increased by many times, so that the vital signs of the patient can fluctuate violently, and the patient can be damaged or even die.
2. Even if a micro pump is not used, infusion needles of a patient sometimes need to be connected with infusion bags of different medicines for infusion, under the condition, three-way connection of different infusion bags and infusion needles is needed, and due to different liquid bag pressures, backflow of a medicine with high pressure to a medicine bag with low pressure occurs, so that the curative effect is influenced, and other hazards caused by chemical reaction of the medicine can be caused; in addition, when the three-way is used for transfusion for a long time, a needle, a transfusion tube and the three-way are connected and separated from each other and are not found in clinic, so that a large amount of blood loss is caused and accidents occur.
Therefore, a three-way pipe or a multi-way pipe for transfusion, which has a simple structure, is convenient to use and can prevent reverse flow, is needed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a backflow-preventing multi-way tube for infusion, which aims at the defects in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an anti-reflux multi-way tube for infusion, comprising: a main pipe and at least one drug adding branch pipe arranged at the side part of the main pipe,
the upper end of the main pipe is provided with a liquid inlet communicated with the infusion tube, and the lower end of the main pipe is provided with a liquid outlet communicated with the infusion tube;
the dosing branch pipe comprises a pipe body, a plug channel and a push plug, wherein one end of the pipe body is communicated with the side part of the main pipe;
the plug channel comprises a cylindrical channel section and a conical channel section which are sequentially arranged from outside to inside;
the push plug comprises a plug cap, a cylindrical plug body and a conical plug body which are sequentially connected with the plug cap.
Preferably, at least two limiting grooves are formed in the inner wall of the middle section of the cylindrical passage section.
Preferably, a polyvinylidene chloride layer is arranged on the inner wall of the conical channel section.
Preferably, a one-way valve is arranged on the outlet at the tail end of the conical channel.
Preferably, the one-way flap comprises a circular baffle and an arc-shaped elastic sheet connecting the circular baffle to the side wall at the tail end of the conical channel.
Preferably, the diameter of the circular baffle is larger than the diameter of the outlet at the end of the conical passage.
Preferably, the outer wall of the cylindrical plug body is provided with a limit convex body matched with the limit groove.
Preferably, a polytetrafluoroethylene layer is arranged on the outer wall of the conical plug body.
Preferably, the diameter of the conical plug body end is smaller than the diameter of the outlet of the conical passage end.
Preferably, the push plug is made of rubber, and the push plug is inserted into the plug channel in a matching manner.
The invention has the beneficial effects that: the anti-reflux multi-way tube for transfusion is provided with the push plug and the plug channel in the dosing branch tube, so that the leakproofness of the dosing branch tube can be always kept when the anti-reflux multi-way tube is used, the liquid reflux in the dosing branch tube can be effectively prevented, the structure is simple, the use is convenient, the anti-reflux multi-way tube can be provided with a plurality of dosing branch tubes to realize 'tee joint', 'four-way', 'five-way' and the like, and thus, various medicaments can be conveniently injected.
Drawings
FIG. 1 is a schematic structural view of a backflow prevention multi-way tube for infusion according to the present invention;
FIG. 2 is a schematic view of the structure of the plug channel of the present invention;
fig. 3 is a schematic structural diagram of the plunger of the present invention.
Description of reference numerals:
1-main pipe 1; 2-dosing branch pipe; 3-a liquid inlet; 4-a liquid outlet; 5, a pipe body; 6, plugging the channel; 7, pushing a plug; 60-a cylindrical channel section; 61-a conical channel section; 62, limiting grooves; 63-a polyvinylidene chloride layer; 64-one-way valve; 65-circular baffle; 66-arc shaped elastic sheet; 67-outlet; 70-plug cap; 71-a cylindrical plug body; 72-conical plug body; 73-limit convex body; 74-Polytetrafluoroethylene layer.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 3, the backflow prevention multi-way tube for infusion of the present embodiment includes: a main pipe 1 and at least one drug adding branch pipe 2 arranged at the side part of the main pipe 1,
the upper end of the main pipe 1 is provided with a liquid inlet 3 communicated with the infusion tube, and the lower end of the main pipe 1 is provided with a liquid outlet 4 communicated with the infusion tube;
the medicine adding branch pipe 2 comprises a pipe body 5, a plug channel 6 and a push plug 7, wherein one end of the pipe body 5 is communicated with the side part of the main pipe 1, the plug channel 6 is arranged at the other end of the pipe body 5, and the push plug 7 is arranged in the plug channel 6 in a matched mode.
The plug channel 6 comprises a cylindrical channel section 60 and a conical channel section 61 which are arranged from outside to inside in sequence; at least two limiting grooves 62 are formed on the inner wall of the middle section of the cylindrical passage section 60; the polyvinylidene chloride layer 63 is arranged on the inner wall of the conical passage section 61, and the polyvinylidene chloride layer 63 can effectively improve the wear resistance and the sealing performance of the inner wall of the conical passage section 61; be provided with one-way flap 64 on the export 66 of conical passageway section 61 end, one-way flap 64 includes a circular baffle 65 and connects circular baffle 65 in the arc shell fragment 65 on the terminal lateral wall of conical passageway section 61, arc shell fragment 65 is the plastics material, under natural state, arc shell fragment 65 contracts, make circular baffle 65 lid locate conical passageway section 61 end export 66 on, and when leading to in the transfer line has liquid, liquid still can press circular baffle 65 to conical passageway section 61 end export 66, make circular baffle 65 cover tightly on export 66, prevent that liquid from being by export 66 adverse current to stopper way 6.
Wherein the diameter of the circular baffle 65 is larger than the diameter of the outlet 66 at the end of the conical channel section 61 to ensure the tightness.
The plunger 7 includes a plug cap 70, a cylindrical plug body 71 and a conical plug body 72 which are connected in sequence to the plug cap 70. The outer wall of the cylindrical plug body 71 is provided with a limiting convex body 73 matched with the limiting groove 62, and the limiting convex body 73 can only slide in the limiting groove 62, so that the push plug 7 can not be excessively inserted inwards and can not fall out outwards; a polytetrafluoroethylene layer 74 is arranged on the outer wall of the conical plug body 72; the push plug 7 is made of rubber, and the push plug 7 is tightly inserted into the plug channel 6, so that the tightness of the dosing branch pipe 2 is further enhanced; wherein the diameter of the end of conical plug 72 is smaller than the diameter of outlet 66 at the end of the conical passage, the diameter of the widest end of conical plug 72 is equal or similar to the diameter of the widest end of conical passage section 61, and the diameter of cylindrical plug 71 is slightly smaller than the diameter of cylindrical passage section 60.
Before use, the push plug 7 is inserted into the plug channel 6, but the conical plug body 72 does not pass through the outlet 66 at the end of the conical channel section 61, the conical plug body 72 is positioned at the outer side of the end of the conical channel, the push plug 7 is tightly matched with the plug channel 6, the one-way valve 64 is in a closed state, the medicine adding branch pipe 2 is kept closed, and the liquid in the main pipe 1 cannot flow out of the medicine adding branch pipe 2. When the medicine adding branch pipe 2 is used for adding medicine, the push plug 7 is pressed to be inserted forwards into the plug channel 6, the diameter of the tail end of the conical plug body 72 is smaller than the diameter of the outlet 66 of the tail end of the conical channel section 61, the tail end of the conical plug body 72 penetrates through the outlet 66 of the tail end of the conical channel section 61 and pushes the circular baffle 65 of the one-way valve 64 open, but the conical plug body 72 is still tightly attached to the conical channel, so that liquid in the medicine adding branch pipe 2 cannot flow backwards outwards through the plug channel 6, the medicine adding branch pipe 2 is kept sealed and still remains sealed, and the conical plug body 72 cannot be excessively inserted inwards under the matching of the limiting convex body 73 and the limiting groove 62, so that the one-way valve 64 and the medicine adding branch pipe 2 can be prevented from being damaged, then the puncture needle is inserted into the push plug 7, penetrates through the push plug 7, enters the medicine adding branch pipe 2, is injected into the medicine adding branch pipe 2 and flows into the main pipe 1 for infusion. When the medicine adding branch pipe 2 is not needed to add medicine any more, the push plug 7 is pulled outwards, the conical plug body 72 is returned to the conical channel, the round baffle plate 65 of the one-way valve 64 is covered on the outlet 66 at the tail end of the conical channel section 61 under the action of liquid pressure and the contraction force of the arc-shaped elastic sheet 65, the medicine adding branch pipe 2 is kept sealed continuously, and then the puncture needle is pulled out, so that the liquid in the medicine adding branch pipe 2 can be prevented from flowing backwards, air bubbles can be prevented from entering the medicine adding branch pipe 2 from a needle hole reserved by the puncture needle on the push plug 7 when the puncture needle is pulled out, and the push plug 7 cannot fall outwards due to excessive pulling-out due to the matching of the limiting convex body 73 and the limiting groove 62.
The invention is used for medical transfusion, in particular to the transfusion with various medicines, when in use, the anti-reflux multi-way tube for transfusion is connected to a transfusion hose, and then the medicine adding branch tube 2 is used for adding medicine.
The anti-reflux multi-way tube for transfusion can always keep the tightness of the medicine adding branch tube 2 when in use, can effectively prevent the liquid in the medicine adding branch tube 2 from flowing backwards, has simple structure and convenient use, can be provided with a plurality of medicine adding branch tubes 2 to realize three-way, four-way, five-way and the like, thereby being convenient to inject a plurality of medicines.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept as defined by the claims and their equivalents.
Claims (5)
1. An anti-reflux multi-way tube for infusion, which is characterized by comprising: a main pipe and at least one drug adding branch pipe arranged at the side part of the main pipe,
the upper end of the main pipe is provided with a liquid inlet communicated with the infusion tube, and the lower end of the main pipe is provided with a liquid outlet communicated with the infusion tube;
the dosing branch pipe comprises a pipe body, a plug channel and a push plug, wherein one end of the pipe body is communicated with the side part of the main pipe;
the plug channel comprises a cylindrical channel section and a conical channel section which are sequentially arranged from outside to inside;
the push plug comprises a plug cap, a cylindrical plug body and a conical plug body which are sequentially connected with the plug cap;
a one-way valve is arranged on an outlet at the tail end of the conical channel;
the one-way valve comprises a circular baffle and an arc-shaped elastic sheet which connects the circular baffle to the side wall at the tail end of the conical channel;
the diameter of the circular baffle is larger than that of the outlet at the tail end of the conical channel;
the outer wall of the cylindrical plug body is provided with a limiting convex body matched with the limiting groove;
the inner wall of the middle section of the cylindrical channel section is provided with at least two limiting grooves;
before the dosing branch pipe is used, the push plug is inserted into the plug channel, but the conical plug body does not penetrate through the outlet at the tail end of the conical channel section, the conical plug body is positioned at the outer side of the tail end of the conical channel, the one-way valve is in a closed state, and the dosing branch pipe is kept closed;
when the medicine adding branch pipe is used for adding medicine, the pushing plug is pressed to be inserted into the plug channel forwards, the tail end of the conical plug body penetrates through the outlet at the tail end of the conical channel section and pushes open the circular baffle of the one-way valve, then the puncture needle is inserted into the pushing plug and penetrates through the pushing plug to enter the medicine adding branch pipe, and medicine is injected into the medicine adding branch pipe and flows into the main pipe for infusion.
2. The anti-reflux multi-way tube for infusion according to claim 1, wherein a polyvinylidene chloride layer is disposed on an inner wall of the conical channel section.
3. The anti-reflux multi-way tube for infusion according to claim 1, wherein a polytetrafluoroethylene layer is disposed on an outer wall of the conical plug body.
4. The anti-reflux multi-way tube for infusion as set forth in claim 3, wherein the diameter of the end of the conical stopper is smaller than the diameter of the outlet of the end of the conical channel.
5. The anti-reflux multi-way tube for infusion according to any one of claims 1 to 4, wherein the push plug is made of rubber and is inserted into the plug channel in a matching manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240186.3A CN106730316B (en) | 2016-12-28 | 2016-12-28 | Anti-reflux multi-way tube for transfusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240186.3A CN106730316B (en) | 2016-12-28 | 2016-12-28 | Anti-reflux multi-way tube for transfusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106730316A CN106730316A (en) | 2017-05-31 |
| CN106730316B true CN106730316B (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611240186.3A Active CN106730316B (en) | 2016-12-28 | 2016-12-28 | Anti-reflux multi-way tube for transfusion |
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| CN (1) | CN106730316B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042137A (en) * | 1979-02-07 | 1980-09-17 | Nat Res Dev | Dispensing valves |
| EP0684050A2 (en) * | 1994-05-27 | 1995-11-29 | Ivac Corporation | Needleless injection site with bypass valve arrangement |
| DE102004005372A1 (en) * | 2004-02-03 | 2005-08-18 | Fresenius Medical Care Deutschland Gmbh | Apparatus and method for introducing a stopper into a patient connector for peritoneal dialysis |
| CN201179271Y (en) * | 2008-01-31 | 2009-01-14 | Amsino医疗集团控股有限公司 | One-way positive pressure valve |
| JP2010022453A (en) * | 2008-07-16 | 2010-02-04 | Nippon Sherwood Medical Industries Ltd | Liquid coinfusion unit |
| CN202982922U (en) * | 2012-06-05 | 2013-06-12 | 李静 | Anti-counterflow positive-pressure needleless four-way joint |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797431A (en) * | 1995-06-23 | 1998-08-25 | Est Group, Inc. | Inner diameter pipe plug |
| CN201543108U (en) * | 2008-09-27 | 2010-08-11 | 司福中 | Anti-reflux infusion tee |
| CN102989061A (en) * | 2012-12-04 | 2013-03-27 | 苏州市雅思精密模具有限公司 | Disposable syringe |
| KR200475695Y1 (en) * | 2013-11-01 | 2014-12-23 | 박효남 | Stop Cock Type Multi-Way Connector Device For Intravenous Injection With Reduced Injection Resistance |
| CN103691025A (en) * | 2014-01-07 | 2014-04-02 | 江苏苏云医疗器材有限公司 | Needleless connection type infusion apparatus |
| CN203694233U (en) * | 2014-01-07 | 2014-07-09 | 江苏苏云医疗器材有限公司 | Injector preventing backflow |
| CN207055734U (en) * | 2016-12-28 | 2018-03-02 | 苏州科技城医院 | The more siphunculus of transfusion counterflow-preventing |
-
2016
- 2016-12-28 CN CN201611240186.3A patent/CN106730316B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042137A (en) * | 1979-02-07 | 1980-09-17 | Nat Res Dev | Dispensing valves |
| EP0684050A2 (en) * | 1994-05-27 | 1995-11-29 | Ivac Corporation | Needleless injection site with bypass valve arrangement |
| DE102004005372A1 (en) * | 2004-02-03 | 2005-08-18 | Fresenius Medical Care Deutschland Gmbh | Apparatus and method for introducing a stopper into a patient connector for peritoneal dialysis |
| CN201179271Y (en) * | 2008-01-31 | 2009-01-14 | Amsino医疗集团控股有限公司 | One-way positive pressure valve |
| JP2010022453A (en) * | 2008-07-16 | 2010-02-04 | Nippon Sherwood Medical Industries Ltd | Liquid coinfusion unit |
| CN202982922U (en) * | 2012-06-05 | 2013-06-12 | 李静 | Anti-counterflow positive-pressure needleless four-way joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106730316A (en) | 2017-05-31 |
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