CN203417366U - Blood return preventing medical infusion set - Google Patents

Blood return preventing medical infusion set Download PDF

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Publication number
CN203417366U
CN203417366U CN201320485646.4U CN201320485646U CN203417366U CN 203417366 U CN203417366 U CN 203417366U CN 201320485646 U CN201320485646 U CN 201320485646U CN 203417366 U CN203417366 U CN 203417366U
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CN
China
Prior art keywords
blood return
return prevention
liquid
return preventing
transfusion
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Expired - Lifetime
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CN201320485646.4U
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Chinese (zh)
Inventor
魏安
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Zixing You'an Technology Co ltd
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Guangzhou Youan Medical Science & Technology Co Ltd
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Priority to CN201320485646.4U priority Critical patent/CN203417366U/en
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Publication of CN203417366U publication Critical patent/CN203417366U/en
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Abstract

The utility model discloses a blood return preventing medical infusion set, and belongs to the technical field of medical instruments. The blood return preventing medical infusion set comprises a bottle stopper puncture device, a Murphy's drooper, an intravenous infusion needle and an infusion tube, and a liquid stop device is arranged on an infusion channel between the bottle stopper puncture device and the intravenous infusion needle. The blood return preventing medical infusion set further comprises a volume reduction blood return preventing hose with elasticity lower than that of the infusion tube, and the two ends of the volume reduction blood return preventing hose are connected to an infusion channel between the liquid stop device and the intravenous infusion needle. When infusion is carried out through the blood return preventing medical infusion set, the vertical distance between the lower end portion of the volume reduction blood return preventing hose and the needle mouth of the intravenous infusion needle is not smaller than a medicine column height corresponding to the human venous pressure. The blood return preventing medical infusion set is simple in structure and excellent in blood return preventing effect, and the blood return preventing time of the blood return preventing medical infusion set can be changed by changing the hardness and/or length of the volume reduction blood return preventing hose.

Description

A kind of blood return prevention medical Transfusion device
Technical field
This utility model relates to technical field of medical instruments, especially relates 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 nurse to take time and order about 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:
Be wherein: 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 blood return prevention function.If application number is the Chinese patents such as " 200720186093.7 ", " 201120565710.0 ".But when medicinal liquid is after weightlessness, the effect that the effect of pressing due to human vein and liquid have phase counterdiffusion, causes blood to flow backwards, so this scheme can not reach the effect of blood return prevention, misleads user.
Another kind of scheme is: when approaching transfusion and completing, exist a components to block discharging tube front end, or with flow slowing device, slow down the flow velocity of medicinal liquid, medicinal liquid is within the regular hour, slowly flow into blood, reach an effect to blood vessel forward, thereby can reach the effect of blood return prevention.If application number is the Chinese patents such as " 201210103562.7 ", " 201210189228.0 ".In current embodiment, discharging tube is all only provided with an inlet, the flow velocity of medicinal liquid is by partly blocking the assembly of discharging tube front end 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.
Utility model content
This utility model object is, provides a kind of simple in structure, the medical Transfusion device that blood return prevention effect is superior.This object is achieved through the following technical solutions:
A medical Transfusion device, comprises 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 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 be only engaged in 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 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; The internal diameter that subtracts appearance blood return prevention flexible pipe preferably 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 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, 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 with flow velocity slowly, to carry out human body within the regular hour, thereby within the regular hour, reach the function of blood return prevention; And by change, subtract hardness and/or the length of holding blood return prevention flexible pipe, 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.
This utility model blood return prevention medical Transfusion device is simple in structure, and blood return prevention effect is superior, and subtracts by change hardness and/or the length of holding blood return prevention flexible pipe, can change the time of blood return prevention medical Transfusion device blood return prevention.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model blood return prevention medical Transfusion device embodiment mono-.
Fig. 2 is the structural representation of this utility model blood return prevention medical Transfusion device embodiment bis-.
Fig. 3 is the structural representation of this utility model blood return prevention medical Transfusion device embodiment tri-.
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, 7-tube for transfusion, 8-hydrophilic stops liquid liquid medicine filtering membrane, 9-filter membrane, 10-housing, 11-ball float, 12-funnel, 13-housing, 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 below in conjunction with accompanying drawing and embodiment, this utility model is described further.
Figure 1 shows that this utility model blood return prevention medical Transfusion device embodiment mono-.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 that to hold the elasticity of 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 subtracts appearance blood return prevention flexible pipe 4 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, 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 with flow velocity slowly, to carry out human body within the regular hour, thereby within the regular hour, reach the function of blood return prevention.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 this utility model blood return prevention medical Transfusion device embodiment bis-.
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 that to hold the elasticity of 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 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 this utility model blood return prevention medical Transfusion device embodiment tri-.
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, be all connected by tube for transfusion 7 between flow regulator 5 and venoclysis needle 6.The one end that subtracts appearance blood return prevention flexible pipe 4 is socketed on the drain pipe of Murphy pipe 2 (can also adopt other suitable method to be connected with the drain pipe of Murphy pipe 2 subtracting appearance blood return prevention flexible pipe 4, as welding), and the other end is connected with flow regulator 5 by tube for transfusion 7.Subtract that to hold the elasticity of 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, stops liquid liquid medicine filtering membrane 8 with the tight closely sealed hydrophilic of funnel 12 upper end inward flanges, and the one end that subtracts appearance blood return prevention flexible pipe 4 is socketed on the drain pipe of funnel 12.Housing 13 inwalls of funnel 12 outer walls and Murphy pipe 2 are tight, to prevent that medicinal liquid from flowing out between housing 13 inwalls of funnel 12 outer walls and Murphy pipe 2.
Housing 13 tops of this Murphy pipe 2 are also provided with air vent 14, and Murphy pipe 2 is provided with and is positioned at housing 13 air-permeable, hydrophobic inner and that cover air vent 14 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 utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.

Claims (6)

1. a blood return prevention medical Transfusion device, comprises 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 blood return prevention flexible pipe lower than subtracting of tube for transfusion, this subtracts and holds blood return prevention flexible pipe two ends and be only engaged in 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 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, and described only liquid device comprises funnel, stops liquid liquid medicine filtering membrane with the tight closely sealed hydrophilic of funnel upper end inward flange; The inner walls of funnel outer wall and Murphy pipe is tight.
6. blood return prevention medical Transfusion device according to claim 5, is characterized in that: the housing top of described Murphy pipe is also provided with air vent, and Murphy pipe is provided with the air-permeable, hydrophobic that is positioned at enclosure interior and the covers air vent film that blocks water.
CN201320485646.4U 2013-08-09 2013-08-09 Blood return preventing medical infusion set Expired - Lifetime CN203417366U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103432640A (en) * 2013-08-09 2013-12-11 广州友安医疗科技有限公司 Anti-blood return medical infusion set
CN106310442A (en) * 2016-08-31 2017-01-11 中山嘉合医疗科技有限公司 Novel infusion tube
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
CN113425937A (en) * 2021-07-30 2021-09-24 新疆医科大学第四附属医院 Safety type vein puncture needle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103432640A (en) * 2013-08-09 2013-12-11 广州友安医疗科技有限公司 Anti-blood return medical infusion set
CN106310442A (en) * 2016-08-31 2017-01-11 中山嘉合医疗科技有限公司 Novel infusion tube
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
CN113425937A (en) * 2021-07-30 2021-09-24 新疆医科大学第四附属医院 Safety type vein puncture needle

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20171115

Address after: Jiangbei Industrial Park Road 423499 Chenzhou City, Hunan province Hanning Zixing Economic Development Zone (Electronic Technology Co. Ltd. factory 4 Building 1 layer)

Patentee after: Zixing You'an Technology Co.,Ltd.

Address before: 510000 ABCD1, Guangzhou, Guangzhou, Guangdong Province, 111 Sports West Road, No. 21 building, ABCD1 self-made room B05 room

Patentee before: GUANGZOU YOUAN MEDICAL TECHNOLOGY Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140205