CN103432640A - Anti-blood return medical infusion set - Google Patents
Anti-blood return medical infusion set Download PDFInfo
- Publication number
- CN103432640A CN103432640A CN201310345700XA CN201310345700A CN103432640A CN 103432640 A CN103432640 A CN 103432640A CN 201310345700X A CN201310345700X A CN 201310345700XA CN 201310345700 A CN201310345700 A CN 201310345700A CN 103432640 A CN103432640 A CN 103432640A
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- China
- Prior art keywords
- blood return
- return prevention
- liquid
- flexible pipe
- medical transfusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000008280 blood Substances 0.000 title claims abstract description 108
- 238000001802 infusion Methods 0.000 title claims abstract description 29
- 230000000875 corresponding Effects 0.000 claims abstract description 6
- 210000004369 Blood Anatomy 0.000 claims description 95
- 230000002265 prevention Effects 0.000 claims description 89
- 239000007788 liquid Substances 0.000 claims description 71
- 239000012528 membrane Substances 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 210000000214 Mouth Anatomy 0.000 claims description 6
- 210000003462 Veins Anatomy 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 229920000126 Latex Polymers 0.000 claims description 3
- 230000002209 hydrophobic Effects 0.000 claims description 3
- 239000004816 latex Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract 4
- 238000001990 intravenous administration Methods 0.000 abstract 4
- 239000007799 cork Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 3
- 210000004204 Blood Vessels Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention discloses an anti-blood return medical infusion set and belongs to the technical field of medical instruments. The anti-blood return medical infusion set comprises a cork puncture unit, a Murphy's pipe, an intravenous infusion needle and an infusion tube; a liquid-stopping device is arranged at the infusion pipeline between the cork puncture unit and the intravenous infusion needle; the anti-blood return medical infusion unit also comprises a volume reduction anti-blood return hose with elasticity lower than the infusion tube; two ends of the volume reduction anti-blood return hose are connected with the infusion tube between the liquid-stopping device and the intravenous infusion needle; when the anti-blood return medical infusion unit is used for infusion, the vertical distance between the lower end part of the volume reduction anti-blood return hose and the port of the intravenous infusion needle is not smaller than the height of a medical cylinder corresponding to the human body venous pressure. The anti-blood return medical infusion set is simple in structure, excellent in anti-blood return effect, and capable of changing the anti-blood return time of the anti-blood return medical infusion set by changing the hardness and/or the length of the volume reduction anti-blood return hose.
Description
Technical field
The present invention relates to technical field of medical instruments, especially relate to a kind of medical Transfusion device that prevents blood backflow in the process of transfusion.
Background technology
Existing most of medical Transfusion device is in infusion process, and the medicinal liquid in transfusion device flows down always, until medicinal liquid just stops during the gravitational equilibrium of the venous pressure of human body and transfusion device Chinese medicine.After medicinal liquid stops, due to the diffusion of liquid, the blood in human body can be back in the tube for transfusion of transfusion device, this phenomenon not only can cause that patient's is terrified, need the nurse to take time and order about the blood flowing human body, but also have thrombosed possibility, even cause the generation of malpractice.
For addressing these problems, have relevant blood return prevention infusion set both at home and abroad, it mainly adopts following two schemes:
Wherein a kind of scheme is: adopt the structures such as ball float or buoy, in infusion process, ball float floats, and medicinal liquid is under the slit flow of ball float or buoy and tube for transfusion; During stopping infusion, ball float sinks, and the gap between itself and tube for transfusion is blocked, and makes medicinal liquid in tube for transfusion in weightlessness, with this, reaches the blood return prevention function.As application number is the Chinese patents such as " 200720186093.7 ", " 201120565710.0 ".But after weightlessness, the effect that the effect of pressing due to human vein and liquid have the phase counterdiffusion, cause blood to flow backwards, so this scheme can not reach the effect of blood return prevention, misleads user when medicinal liquid.
Another kind of scheme is: when approaching transfusion and completing, exist a components to block the discharging tube front end, or slow down the flow velocity of medicinal liquid with flow slowing device, medicinal liquid is within the regular hour, slowly flow into blood, reach an effect to the blood vessel forward, thereby can reach the effect of blood return prevention.As application number is the Chinese patents such as " 201210103562.7 ", " 201210189228.0 ".In current embodiment, discharging tube all only is provided with an inlet, the flow velocity of medicinal liquid blocks the assembly of discharging tube front end by part or the structure of flow slowing device is controlled, relevant due to medicinal liquid flow velocity and pressure, aperture, use the uncontrollable medicinal liquid flow velocity of a small amount of debris, and medicinal liquid is difficult to Uniform Flow, process of producing product is difficult to control simultaneously, complex process, production cost is high, is difficult to reach the blood return prevention effect of expection.
Summary of the invention
The object of the invention is, provides a kind of simple in structure, the medical Transfusion device that the blood return prevention effect is superior.This purpose is achieved through the following technical solutions:
A kind of blood return prevention medical Transfusion device, comprise bottle plug puncture unit, Murphy pipe, venoclysis needle, tube for transfusion, and the infusion channel between bottle plug puncture unit and venoclysis needle is provided with only liquid device; This blood return prevention medical Transfusion device also comprises that elasticity holds the blood return prevention flexible pipe lower than subtracting of tube for transfusion, and this subtracts and holds blood return prevention flexible pipe two ends and only be engaged on the infusion channel between liquid device, venoclysis needle; During the transfusion of this blood return prevention medical Transfusion device, subtract and hold blood return prevention flexible pipe bottom and be not less than human vein with the vertical distance of venoclysis needle pin mouth and press corresponding powder column height.
Described only liquid device is a kind of when approaching the transfusion, can, to lower tube for transfusion automatic liquid-stopping, automatically avoid air to enter lower tube for transfusion.Wherein, lower tube for transfusion refers to the infusion channel of stopping between liquid device and venoclysis needle pin mouth.
During this blood return prevention medical Transfusion device normal infusion, medicinal liquid passes through successively bottle plug puncture unit, stops liquid device, subtracts and hold blood return prevention flexible pipe, the laggard pedestrian's body of venoclysis needle; Preferably the described internal diameter that holds the blood return prevention flexible pipe that subtracts equates with the internal diameter of tube for transfusion, thereby subtract appearance blood return prevention flexible pipe, can not affect the flow velocity of normal infusion process herb liquid.
Being provided with the only common medical Transfusion device of liquid device (be not provided with to subtract and hold the blood return prevention flexible pipe) approaches while having infused, only liquid device stops gas to enter lower tube for transfusion, lower tube for transfusion is closed, the hydraulic pressure that lower tube for transfusion is closed in rear common medical Transfusion device reduces, medicinal liquid is in weightlessness, endovascular venous pressure during higher than the hydraulic pressure of transfusion device blood will reflux.
And this blood return prevention medical Transfusion device approaches while having infused, only liquid device stops gas to enter lower tube for transfusion, lower tube for transfusion is closed, the hydraulic pressure that lower tube for transfusion is closed in rear blood return prevention medical Transfusion device reduces, as ignore atmospheric effect, medicinal liquid will be in weightlessness, and on realizing, the atmosphere extruding subtracts holds blood return prevention flexible pipe Slow Deformation, make to subtract appearance blood return prevention flexible pipe medicinal liquid is produced to pressure, force medicinal liquid to carry out human body with flow velocity slowly within the regular hour, thereby reach the function of blood return prevention within the regular hour; And subtract hardness and/or the length of holding the blood return prevention flexible pipe by change, can change the time of blood return prevention medical Transfusion device blood return prevention.
The described appearance blood return prevention flexible pipe that subtracts is preferably silica gel hose or latex flexible pipe or PVC flexible pipe.
Blood return prevention medical Transfusion device of the present invention is simple in structure, and the blood return prevention effect is superior, and subtracts by change hardness and/or the length of holding the blood return prevention flexible pipe, can change the time of blood return prevention medical Transfusion device blood return prevention.
The accompanying drawing explanation
The structural representation that Fig. 1 is blood return prevention medical Transfusion device embodiment mono-of the present invention.
The structural representation that Fig. 2 is blood return prevention medical Transfusion device embodiment bis-of the present invention.
The structural representation that Fig. 3 is blood return prevention medical Transfusion device embodiment tri-of the present invention.
In figure: 1-bottle plug puncture unit, 2-Murphy pipe, 3-filter, 4-subtracts appearance blood return prevention flexible pipe, 5-flow regulator, 6-venoclysis needle, the 7-tube for transfusion, the 8-hydrophilic stops the liquid liquid medicine filtering membrane, the 9-filter membrane, the 10-housing, the 11-ball float, 12-funnel, 13-housing, the 14-air vent, the 15-air-permeable, hydrophobic film that blocks water.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is described further below in conjunction with accompanying drawing and embodiment.
Figure 1 shows that blood return prevention medical Transfusion device embodiment mono-of the present invention.This blood return prevention medical Transfusion device comprises bottle plug puncture unit 1, Murphy pipe 2, stops liquid device, subtracts and hold blood return prevention flexible pipe 4, flow regulator 5, venoclysis needle 6, tube for transfusion 7, in this embodiment, only liquid device is provided with the filter 3 that hydrophilic stops liquid liquid medicine filtering membrane 8 in being.Bottle plug puncture unit 1, Murphy pipe 2, filter 3, subtract and hold blood return prevention flexible pipe 4, flow regulator 5, venoclysis needle 6 and be connected successively by tube for transfusion 7.Subtract the elasticity of holding blood return prevention flexible pipe 4 lower than tube for transfusion 7, and its position is during with this blood return prevention medical Transfusion device transfusion, subtracts and hold blood return prevention flexible pipe 4 bottoms and be not less than human vein with the vertical distance of venoclysis needle 6 pin mouths and press corresponding powder column height to be as the criterion.
During this blood return prevention medical Transfusion device normal infusion, medicinal liquid passes through successively bottle plug puncture unit 1, Murphy pipe 2, filter 3, subtracts and hold blood return prevention flexible pipe 4, flow regulator 5, the laggard pedestrian's body of venoclysis needle 6.The described internal diameter that holds blood return prevention flexible pipe 4 that subtracts equates with the internal diameter of tube for transfusion 7, thereby subtract appearance blood return prevention flexible pipe 4, can not affect the flow velocity of normal infusion process herb liquid.
This blood return prevention medical Transfusion device approaches while having infused, hydrophilic stops liquid liquid medicine filtering membrane 8 and stops gas to enter lower tube for transfusion 7, lower tube for transfusion 7 is closed, the hydraulic pressure that lower tube for transfusion 7 is closed in rear blood return prevention medical Transfusion device reduces, as ignore atmospheric effect, medicinal liquid will be in weightlessness, and on realizing, the atmosphere extruding subtracts holds blood return prevention flexible pipe 4 Slow Deformations, make to subtract 4 pairs of medicinal liquids of appearance blood return prevention flexible pipe and produce pressure, force medicinal liquid to carry out human body with flow velocity slowly within the regular hour, thereby reach the function of blood return prevention within the regular hour.In this embodiment, this subtracts appearance blood return prevention flexible pipe 4 is silica gel hose, should be appreciated that, this subtracts appearance blood return prevention flexible pipe 4 can also be latex flexible pipe, PVC flexible pipe or other suitable flexible pipe.The time of this blood return prevention medical Transfusion device blood return prevention can subtract hardness and/or the length of holding blood return prevention flexible pipe 4 by change and change.
Figure 2 shows that blood return prevention medical Transfusion device embodiment bis-of the present invention.
This blood return prevention medical Transfusion device comprise bottle plug puncture unit 1, Murphy pipe 2, only liquid device, subtract and hold blood return prevention flexible pipe 4, flow regulator 5, be provided with the diaphragm of liquid function only of filter membrane 9() filter 3, venoclysis needle 6, tube for transfusion 7, bottle plug puncture unit 1, Murphy pipe 2, only liquid device, subtract and hold blood return prevention flexible pipe 4, flow regulator 5, filter 3, venoclysis needle 6 and be connected successively by tube for transfusion 7.Subtract the elasticity of holding blood return prevention flexible pipe 4 lower than tube for transfusion 7, and its position is during with this blood return prevention medical Transfusion device transfusion, subtracts and hold blood return prevention flexible pipe 4 bottoms and be not less than human vein with the vertical distance of venoclysis needle 6 pin mouths and press corresponding powder column height to be as the criterion.
In this embodiment, only liquid device comprises housing 10 and ball float 11, and the diameter of ball float 11 just in time can be stopped up the liquid outlet of housing 10.When approaching the transfusion, only liquid device can, to lower tube for transfusion 7 automatic liquid-stoppings, avoid air to enter lower tube for transfusion 7 automatically.Should be appreciated that, described only liquid device can also be for comprising housing and being located at the only liquid film component devices between housing inlet and liquid outlet, or other suitable device.
Figure 3 shows that blood return prevention medical Transfusion device embodiment tri-of the present invention.
This blood return prevention medical Transfusion device comprises bottle plug puncture unit 1, be provided with liquid device only Murphy pipe 2, subtract and hold blood return prevention flexible pipe 4, flow regulator 5, venoclysis needle 6, tube for transfusion 7.Between bottle plug puncture unit 1 and Murphy pipe 2, all be connected by tube for transfusion 7 between flow regulator 5 and venoclysis needle 6.Subtract the drain pipe (can also adopt other suitable method will subtract appearance blood return prevention flexible pipe 4 and be connected with the drain pipe of Murphy pipe 2, as welding) that an end that holds blood return prevention flexible pipe 4 is socketed on Murphy pipe 2, the other end is connected with flow regulator 5 by tube for transfusion 7.Subtract the elasticity of holding blood return prevention flexible pipe 4 lower than tube for transfusion 7, and its position is during with this blood return prevention medical Transfusion device transfusion, subtracts and hold blood return prevention flexible pipe 4 bottoms and be not less than human vein with the vertical distance of venoclysis needle 6 pin mouths and press corresponding powder column height to be as the criterion.
These Murphy pipe 2 bottoms are provided with only liquid device, and in this embodiment, only liquid device comprises funnel 12, with the tight closely sealed hydrophilic of funnel 12 upper end inward flanges, stops liquid liquid medicine filtering membrane 8, subtracts the drain pipe that an end that holds blood return prevention flexible pipe 4 is socketed on funnel 12.Housing 13 inwalls of funnel 12 outer walls and Murphy pipe 2 are tight, to prevent medicinal liquid, between housing 13 inwalls of funnel 12 outer walls and Murphy pipe 2, flow out.
Housing 13 tops of this Murphy pipe 2 also are provided with air vent 14, and Murphy pipe 2 is provided with and is positioned at the inner and air-permeable, hydrophobic that cover air vent 14 of housing 13 film 15 that blocks water.The function that the Murphy pipe 2 of the present embodiment has aerofluxus, stops liquid, filtration.
The above embodiment has only expressed three kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a blood return prevention medical Transfusion device, comprise bottle plug puncture unit, Murphy pipe, venoclysis needle, tube for transfusion, and the infusion channel between bottle plug puncture unit and venoclysis needle is provided with only liquid device; It is characterized in that: also comprise that elasticity holds the blood return prevention flexible pipe lower than subtracting of tube for transfusion, this subtracts and holds blood return prevention flexible pipe two ends and only be engaged on the infusion channel between liquid device, venoclysis needle; During the transfusion of this blood return prevention medical Transfusion device, subtract and hold blood return prevention flexible pipe bottom and be not less than human vein with the vertical distance of venoclysis needle pin mouth and press corresponding powder column height.
2. blood return prevention medical Transfusion device according to claim 1 is characterized in that: described only liquid device comprises housing and is located at the only liquid film between housing inlet and liquid outlet.
3. blood return prevention medical Transfusion device according to claim 1 is characterized in that: described only liquid device is provided with the filter that hydrophilic stops the liquid liquid medicine filtering membrane in being.
4. blood return prevention medical Transfusion device according to claim 1 is characterized in that: described only liquid device comprises housing and ball float, and the diameter of ball float just in time can be stopped up the liquid outlet of housing.
5. blood return prevention medical Transfusion device according to claim 1 is characterized in that: described Murphy pipe bottom is provided with described only liquid device, described only liquid device comprise funnel, with funnel upper end inward flange closely closely sealed hydrophilic stop the liquid liquid medicine filtering membrane; The inner walls of funnel outer wall and Murphy pipe is tight.
6. blood return prevention medical Transfusion device according to claim 5, it is characterized in that: the housing top of described Murphy pipe also is provided with air vent, and the Murphy pipe is provided with the air-permeable, hydrophobic that is positioned at enclosure interior and the covers air vent film that blocks water.
7. blood return prevention medical Transfusion device according to claim 1 is characterized in that: describedly subtract that to hold the blood return prevention flexible pipe be silica gel hose.
8. blood return prevention medical Transfusion device according to claim 1 is characterized in that: describedly subtract that to hold the blood return prevention flexible pipe be the latex flexible pipe.
9. blood return prevention medical Transfusion device according to claim 1 is characterized in that: describedly subtract that to hold the blood return prevention flexible pipe be the PVC flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310345700XA CN103432640A (en) | 2013-08-09 | 2013-08-09 | Anti-blood return medical infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310345700XA CN103432640A (en) | 2013-08-09 | 2013-08-09 | Anti-blood return medical infusion set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103432640A true CN103432640A (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310345700XA Pending CN103432640A (en) | 2013-08-09 | 2013-08-09 | Anti-blood return medical infusion set |
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| CN (1) | CN103432640A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933642A (en) * | 2013-12-21 | 2014-07-23 | 山东中保康医疗器具有限公司 | Membrane type infusion set liquid flow control device |
| CN104906659A (en) * | 2015-06-09 | 2015-09-16 | 河南曙光健士医疗器械集团股份有限公司 | Dynamic medicine liquid filter for pump and infusion system made by the same |
| CN111163816A (en) * | 2017-05-19 | 2020-05-15 | 珀雷克斯公司 | Infusion device with hydrophilic sintered porous plastic or hydrophilic porous fiber air blocking filter |
| CN113368337A (en) * | 2021-07-14 | 2021-09-10 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
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| CN201244235Y (en) * | 2008-09-01 | 2009-05-27 | 张幼禽 | Saving type self-closing safety transfusion device |
| CN101791444A (en) * | 2010-03-01 | 2010-08-04 | 江西洪达医疗器械集团有限公司 | Safe bubble-free infusion set |
| CN202223684U (en) * | 2011-08-15 | 2012-05-23 | 孙少东 | Safe liquid level self-locking structure for transfusion tube |
| CN102631733A (en) * | 2012-05-10 | 2012-08-15 | 浙江康泰医疗器械有限公司 | Automatic exhaust and liquid stop and anti-blood backflow high-speed precision intelligent security infusion set |
| CN103120811A (en) * | 2013-02-28 | 2013-05-29 | 黄陵娥 | Transfusion device capable of resisting blood return and medical infusion instrument thereof |
| CN203090052U (en) * | 2012-12-31 | 2013-07-31 | 曾家宏 | No-residual-liquid infusion apparatus |
| CN203417366U (en) * | 2013-08-09 | 2014-02-05 | 广州友安医疗科技有限公司 | Blood return preventing medical infusion set |
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2013
- 2013-08-09 CN CN201310345700XA patent/CN103432640A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1181065B1 (en) * | 1999-05-03 | 2003-07-30 | BD Infusion Therapy GmbH | Infusion apparatus |
| CN201244235Y (en) * | 2008-09-01 | 2009-05-27 | 张幼禽 | Saving type self-closing safety transfusion device |
| CN101791444A (en) * | 2010-03-01 | 2010-08-04 | 江西洪达医疗器械集团有限公司 | Safe bubble-free infusion set |
| CN202223684U (en) * | 2011-08-15 | 2012-05-23 | 孙少东 | Safe liquid level self-locking structure for transfusion tube |
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| CN103120811A (en) * | 2013-02-28 | 2013-05-29 | 黄陵娥 | Transfusion device capable of resisting blood return and medical infusion instrument thereof |
| CN203417366U (en) * | 2013-08-09 | 2014-02-05 | 广州友安医疗科技有限公司 | Blood return preventing medical infusion set |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933642A (en) * | 2013-12-21 | 2014-07-23 | 山东中保康医疗器具有限公司 | Membrane type infusion set liquid flow control device |
| CN104906659A (en) * | 2015-06-09 | 2015-09-16 | 河南曙光健士医疗器械集团股份有限公司 | Dynamic medicine liquid filter for pump and infusion system made by the same |
| CN104906659B (en) * | 2015-06-09 | 2019-01-29 | 河南曙光健士医疗器械集团股份有限公司 | A kind of dynamic pump liquid medicine filter and its manufactured transfusion system |
| CN111163816A (en) * | 2017-05-19 | 2020-05-15 | 珀雷克斯公司 | Infusion device with hydrophilic sintered porous plastic or hydrophilic porous fiber air blocking filter |
| CN113368337A (en) * | 2021-07-14 | 2021-09-10 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
| CN113368337B (en) * | 2021-07-14 | 2022-08-02 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
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| PB01 | Publication | ||
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Application publication date: 20131211 |