CN203090048U - Anti-backflow infusion set drip chamber and anti-backflow infusion set - Google Patents
Anti-backflow infusion set drip chamber and anti-backflow infusion set Download PDFInfo
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- CN203090048U CN203090048U CN 201220695383 CN201220695383U CN203090048U CN 203090048 U CN203090048 U CN 203090048U CN 201220695383 CN201220695383 CN 201220695383 CN 201220695383 U CN201220695383 U CN 201220695383U CN 203090048 U CN203090048 U CN 203090048U
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- blocking solution
- medicinal liquid
- blood return
- liquid
- return prevention
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Abstract
The utility model discloses an anti-backflow infusion set drip chamber which comprises a chamber body and a stop film inside the same. A stop disc is fixed below the stop film. One side of the stop disc, opposite to the stop film, is provided with a circular storage groove, a pillar with one end close to the stop film is formed in the area enclosed by the inner peripheral edge of the storage groove, the center of the pillar is provided with an axial liquid medicine hole, and the part of the pillar, between the liquid medicine hole and the storage groove, is provided with an overflow channel by which the liquid medicine hole is communicated with the storage groove. The utility model further discloses an anti-backflow infusion set which comprises the anti-backflow infusion set drip chamber. The stop disc is designed above the stop film, so that dripping time of liquid is prolonged effectively, backflow of blood is prevented and sufficient time is preserved for a nurse to pull an injection needle out of the body of a patient.
Description
Technical field
This utility model relates to a kind of infusion set, especially relates to a kind of infusion unit titrimeter of blood return prevention and comprises its transfusion device.
Background technology
Therefore because transfusion device has the advantages that to make medicinal liquid slowly enter blood of human body, field such as transfusion in slowly infusion treatment and operation process has a wide range of applications.
The traditional infusion device after the liquid transfusion of transfusion bag or infusion bottle finishes, need in time pull out pin, otherwise the situation of backflow of blood, i.e. blood back phenomenon can take place.In case the blood back phenomenon occurs, can cause the blood coagulation in bulk that flows back in the transfusion device, if clot enters human body, the situation of thrombosis artery-clogging then may occur, even serious malpractice such as nosocomial infection, septicemia takes place, be detrimental to health.
As shown in Figure 1, a kind of existing blood return preventing infusion device comprises:
Bottle plug puncture unit protective sleeve 1, bottle plug puncture unit 2, dropping funnel 15, pipeline 8, flow regulator 9, injection member 10, outer cone joint 11, outer cone joint protective cover 12, injection needle 13.Dropping funnel 15 comprises the blocking solution film 5 in bucket body 14 and the bucket body 14.Bucket body 14 comprises dropper 3, overhead guard 4, base 7.
In normal use, when infusion process nearly finishes, dropper is dropping liquid in dropping funnel no longer, medicinal liquid liquid level in the dropping funnel descends gradually, and when liquid level dropped to the position of blocking solution film, medicinal liquid can be because the adsorption of blocking solution film, form the air-locked liquid film of one deck on the filter membrane surface, because the effect of air negative pressure, medicinal liquid stops following, has stoped the air admission infusion pipeline.Though when transfusion closed to an end, the blocking solution film can slow down the decrease speed of dropping funnel inner liquid medicine liquid level,, thereby can not reach the purpose of blood return prevention because the degree of slowing down is limited.
The defective that this patent exists aspect blood return prevention is, because the blocking solution film is very little to the drag effect of medicinal liquid, can't fundamentally avoid the generation of blood back phenomenon.If hospital's transfusion is overstaffed, at nurse shortages or under, can not in time injection needle be extracted from human body than busy situation, can cause blood of human body to flow backward in transfusion device because there is certain pressure in blood in human body in liquid this moment.In case the blood back phenomenon takes place, not only there is the risk that patient's health of human body is caused significant damage, but also may cause serious problems such as nosocomial infection, septicemia, moreover, easily the patient and accompany family members and generate a panic psychologically, cause discontented to the hospital services quality of patient and family members.
The utility model content
This utility model provides a kind of infusion unit titrimeter of blood return prevention and has comprised its transfusion device, by the improvement to infusion unit titrimeter, can effectively prevent the generation of blood back phenomenon.
The infusion unit titrimeter of blood return prevention of the present utility model, comprise bucket body and the intravital blocking solution film of bucket, described blocking solution film below is fixed with the blocking solution dish, relative blocking solution film one side of described blocking solution dish has annular reservoir, form the projection of an end by reservoir inner ring edge institute area surrounded near the liquid storage film, the projection center is provided with axial medicinal liquid hole, on the projection between medicinal liquid hole and the reservoir overflow ducts that is communicated with them is arranged.
During operate as normal, medicinal liquid splashes in the dropping funnel from dropper, and through the blocking solution membrane filtration, following row enters the blocking solution dish, through pipeline, enters blood of human body.
The blocking solution dish provides drag effect to following of medicinal liquid.The reason that this resistance produces is, during by narrow and small reservoir and tiny overflow ducts,, make medicinal liquid interact at medicinal liquid with blocking solution film and blocking solution dish inwall because medicinal liquid self exists surface tension and viscosity, thereby cause the medicinal liquid constricted flow, flow velocity reduces.
When normal injection, because the pressure of medicinal liquid is bigger, the resistance that the blocking solution dish is provided, also not obvious to the influence of medicinal liquid flow velocity.But when injection process when finishing because dropper no longer splashes into medicinal liquid in dropping funnel, thereby make the medicinal liquid liquid level in the dropping funnel begin slow decline.Decline along with the medicinal liquid liquid level, the pressure of medicinal liquid diminishes gradually, the influence that medicinal liquid is subjected to blocking solution dish drag effect displays gradually, and the time of following of medicinal liquid this moment can the increase gradually with the reduction of liquid level, finally remains on to splash into a drops physic liquor downwards by dropping funnel in per tens seconds.Because in the infusion process, as long as guarantee that medicinal liquid can splash into one of human body about one minute, can avoid the generation of blood back phenomenon, this utility model can make that medicinal liquid continues slowly to splash in the human body body, thereby has fundamentally avoided the generation of blood back phenomenon.
When dropping funnel inner liquid medicine liquid level is reduced to blocking solution film when surface, the blocking solution film can adsorb medicinal liquid on self surface, forms one deck medicinal liquid liquid film, thereby stops blocking solution film top air by the blocking solution film, in pipeline enters the human body body.
Medicinal liquid can form liquid film on blocking solution film surface, and its reason is that these micropore inwalls have adsorption to medicinal liquid, can make medicinal liquid overcome gravity, are attracted to the surface of blocking solution film owing to have many sinuate micropores in the blocking solution film.
In order to ensure when dropping liquid closes to an end, the blocking solution dish is obvious to the drag effect of medicinal liquid, and the distance between described projection and the blocking solution film is for being not more than 2mm.
Be communicated with reservoir and medicinal liquid hole by overflow ducts is set, can guarantee that the medicinal liquid in the reservoir can enter the medicinal liquid hole smoothly, and splash into pipeline, enter in the human body body through the medicinal liquid hole.As preferably, described overflow ducts is a teeth groove of being located at the projection end face, its objective is blocking solution dish die sinking for convenience, reduces manufacturing cost.
Described blocking solution film top is coated with spongy body, can better delay following process of dropping funnel inner liquid medicine.In infusion process, inhale in the spongy body a small amount of medicinal liquid is arranged, when infusion process is about to finish, medicinal liquid liquid level in the dropping funnel begins slow decline, when liquid level dropped to the spongy body upper surface, the medicinal liquid in the spongy body can slowly flow out spongy body, because spongy body has water absorption, the decrease speed of medicinal liquid when the rate of outflow can be significantly less than no spongy body, thus time of dropping liquid effectively prolonged.
Described bucket body comprises base and overhead guard, and base and overhead guard are connected by the blocking solution dish.As preferably, described blocking solution dish and base are one-body molded.Its objective is to have made things convenient for the dropping funnel die sinking, and strengthened whole safety, eliminated the seal point of blocking solution dish and base, thereby avoided because the seal point sealing is not good, and the generation of phenomenons such as the leakage that causes, air inlet.
Each several part in the described blocking solution dish, what provide the maximum resistance effect to medicinal liquid is the medicinal liquid hole, the size in medicinal liquid hole has directly determined the speed of medicinal liquid by following of blocking solution dish, and excessive medicinal liquid hole can cause the following speed of medicinal liquid too fast, makes the effect that the blocking solution dish is set reduce; And too small medicinal liquid hole may cause, because there is surface tension in medicinal liquid self, finally can't the medicinal liquid hole following, and make transfusion do sth. in advance end.As preferably, the aperture in described medicinal liquid hole is 1 ~ 2mm.
This utility model also provides a kind of blood return preventing infusion device, comprises the infusion unit titrimeter of described blood return prevention.
Compared with prior art, the beneficial effects of the utility model: owing to below the blocking solution film, design a blocking solution dish, before feasible transfusion closes to an end, the residual medicinal liquid in dropping funnel internal resistance liquid film top can continue following slowly, effectively prolonged the time of dropping liquid, stoped the generation of blood back phenomenon, for the nurse extracts the competent time of having reserved with injection needle in patient's body.
Description of drawings
Fig. 1 is the structural representation of existing blood return preventing infusion device;
Fig. 2 is the structural representation of this utility model blood return preventing infusion device;
Fig. 3 is the structure for amplifying sketch map of blocking solution dish among Fig. 2;
Fig. 4 is the vertical view of blocking solution dish among Fig. 3;
Fig. 5 is the another kind of blood return preventing infusion device dropping funnel of this utility model (blocking solution film top covers one deck spongy body);
Fig. 6 is another blood return preventing infusion device of this utility model (base is the design of one with the blocking solution dish).
The specific embodiment
Embodiment 1
With reference to Fig. 2, blood return preventing infusion device of the present utility model comprises bottle plug puncture unit protective sleeve 1, bottle plug puncture unit 2, dropping funnel 15, pipeline 8, flow regulator 9, injection member 10, outer cone joint 11, outer cone joint protective cover 12, injection needle 13; This utility model improves the improvement that mainly is dropping funnel, and remainder and existing structure are similar, and wherein, dropping funnel 15 comprises the blocking solution film 5 in bucket body 14 and the bucket body 14; Bucket body 14 comprises dropper 3, overhead guard 4, base 7.
With reference to Fig. 3 and Fig. 4, blocking solution dish 6 relative blocking solution film 5 one sides have annular reservoir 62, form the projection 64 of an end by reservoir 62 inner ring edge institute area surrounded near liquid storage film 5, distance between projection 64 and the blocking solution film 5 is 1mm, and projection 64 centers are provided with the axial medicinal liquid hole 61 that the aperture is 2mm.
With reference to shown in 4, the quantity of overflow ducts 63 is 4, has avoided being provided with very fewly because of overflow ducts 63, and indivedual overflow ducts 63 are blocked, make resistance increase considerably; But if overflow ducts 63 quantity are too much, then can cause blocking solution dish 6 die sinking difficulty to increase, complex manufacturing, production cost increase.
It is 5 microns microporous filter membrane that present embodiment blocking solution film 5 is selected precision for use, and pipeline 8 internal diameters are about 2.8mm.
During use; unplug bottle plug puncture unit protective sleeve 1; bottle plug puncture unit 2 is inserted in transfusion bag or the infusion bottle; then with after the emptying of transfusion device inner air; flow regulator 9 is placed the closed position; again injection needle 13 is pierced through the patient's vein blood vessel, then flow regulator 9 is adjusted to needed liquid droping speed position.This moment, the bottle inner liquid medicine was through bottle stopper penetrator 2, dropper 3 flows in the dropping funnel 15, medicinal liquid gathers on blocking solution film 5 faces, medicinal liquid liquid level in the dropping funnel 15 rises, under action of gravity, medicinal liquid overcomes the resistance that blocking solution film 5 micropores produce, flow to the downstream by blocking solution film 5, the part medicinal liquid is along medicinal liquid hole 61 flowing into pipeline 8, the part medicinal liquid flows in the reservoir 62 of blocking solution dish 6, in reservoir 62, gather medicinal liquid, contact covers the downstream face of blocking solution film 5, and the medicinal liquid in the reservoir 62 overflows simultaneously, flows to the medicinal liquid hole 61 of blocking solution dish 6 by overflow ducts 63, then medicinal liquid fills up the cavity of base 7 and 6 formation of blocking solution dish, continue to flow to pipeline 8, through flow regulator 9, injection needle 13 enters human body at last.
In the infusion process,, be enough to overcome blocking solution film 5 micropore inwalls to the absorption affinity of medicinal liquid and the resistance of blocking solution dish 6 because dropping funnel 15 inner liquid medicine fluid columns are higher, thus to transfusion not have smoothly influence.
When transfusion nearly finishes, dropper 3 is dropping liquid in dropping funnel 15 no longer, dropping funnel 15 inner liquid medicine liquid levels begin to descend gradually, the medicinal liquid liquid-column height is more and more littler, and this moment, the resistance of blocking solution film 5 and 6 pairs of medicinal liquids of blocking solution dish displayed all the more, and the interval that transfusion device is following is elongated gradually, through for a long time slow dropping liquid, medicine liquid droplet in the dropping funnel 15 is clean, and final dropping liquid stops, and infusion process finishes.
In order better to explain embodiment 1, below be one group experimental data, as table 1, wherein used medicinal liquid is the normal saline of mass fraction 0.9%.
| Following drops physic liquor sequence number | The adjacent following time (second) | Remarks |
| First | 48 | Transfusion stops to pick up counting after the continuous-flow |
| Second | 55 | |
| The 3rd | 60 |
Table 1
With reference to Fig. 5, blood return preventing infusion device of the present utility model, main composition is identical with embodiment 1, difference is, be positioned at above the blocking solution film 5, covered the spongy body 16 of a layer thickness 5mm, in infusion process, there is a small amount of medicinal liquid in the spongy body 16 always, treat that transfusion finishes nearly, dropper 3 is dropping liquid in dropping funnel 15 no longer, and dropping funnel 15 inner liquid medicine liquid levels begin to descend gradually, the medicinal liquid liquid-column height is more and more littler, when liquid level was lower than spongy body 16 upper surfaces, spongy body 16 beginnings slowly discharged medicinal liquid, compare with embodiment 1 in fact, slow down following speed of blocking solution film 5 top 5mm thickness medicinal liquids, thereby more effectively prolonged the time of dropping liquid.
With reference to Fig. 6, blood return preventing infusion device of the present utility model, main composition is identical with embodiment 1, and difference is that base 7 is formed in one with blocking solution dish 6.Medicinal liquid hole 61 directly is connected with pipeline 8, this design mainly be for transfusion device in manufacture process, the convenience of die sinking has been simplified the manufacturing process of transfusion device.
Claims (8)
1. the infusion unit titrimeter of a blood return prevention, comprise bucket body and the intravital blocking solution film of bucket, it is characterized in that, described blocking solution film below is fixed with the blocking solution dish, relative blocking solution film one side of described blocking solution dish has annular reservoir, form an end near the projection of liquid storage film by reservoir inner ring edge institute area surrounded, the projection center is provided with axial medicinal liquid hole, on the projection between medicinal liquid hole and the reservoir overflow ducts that is communicated with them is arranged.
2. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, the distance between described projection and the blocking solution film is for being not more than 2mm.
3. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, described overflow ducts is a teeth groove of being located at the projection end face.
4. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, described blocking solution film top is coated with spongy body.
5. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, described bucket body comprises base and overhead guard, and base and overhead guard are connected by the blocking solution dish.
6. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, described blocking solution dish and base are one-body molded.
7. the infusion unit titrimeter of blood return prevention as claimed in claim 1 is characterized in that, the aperture in described medicinal liquid hole is 1 ~ 2mm.
8. a blood return preventing infusion device is characterized in that, comprises the infusion unit titrimeter of the arbitrary described blood return prevention of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695383 CN203090048U (en) | 2012-12-14 | 2012-12-14 | Anti-backflow infusion set drip chamber and anti-backflow infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695383 CN203090048U (en) | 2012-12-14 | 2012-12-14 | Anti-backflow infusion set drip chamber and anti-backflow infusion set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203090048U true CN203090048U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220695383 Expired - Lifetime CN203090048U (en) | 2012-12-14 | 2012-12-14 | Anti-backflow infusion set drip chamber and anti-backflow infusion set |
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| CN (1) | CN203090048U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041468A (en) * | 2012-12-14 | 2013-04-17 | 杭州科诺过滤器材有限公司 | Infusion apparatus drip chamber and infusion apparatus capable of preventing blood return |
| CN106730136A (en) * | 2017-02-14 | 2017-05-31 | 闫婷婷 | Medical infusion device |
| CN106823042A (en) * | 2017-03-10 | 2017-06-13 | 长沙职业技术学院 | Transfusion system |
| CN106902413A (en) * | 2017-02-16 | 2017-06-30 | 陶云霞 | Medical infusion device |
-
2012
- 2012-12-14 CN CN 201220695383 patent/CN203090048U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041468A (en) * | 2012-12-14 | 2013-04-17 | 杭州科诺过滤器材有限公司 | Infusion apparatus drip chamber and infusion apparatus capable of preventing blood return |
| CN106730136A (en) * | 2017-02-14 | 2017-05-31 | 闫婷婷 | Medical infusion device |
| CN106902413A (en) * | 2017-02-16 | 2017-06-30 | 陶云霞 | Medical infusion device |
| CN106823042A (en) * | 2017-03-10 | 2017-06-13 | 长沙职业技术学院 | Transfusion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 311404 Fuyang Xindeng Town Industrial Park Patentee after: HANGZHOU ANOW MICROFILTRATION Co.,Ltd. Address before: Hangzhou City, Zhejiang province 311404 Fuyang Xindeng Town Industrial Park Patentee before: HANGZHOU ANOW MICROFILTRATION Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |