CN103272313B - Filter with blood return preventing time controllable on medical infusion set and medical infusion set - Google Patents
Filter with blood return preventing time controllable on medical infusion set and medical infusion set Download PDFInfo
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- CN103272313B CN103272313B CN201310205510.8A CN201310205510A CN103272313B CN 103272313 B CN103272313 B CN 103272313B CN 201310205510 A CN201310205510 A CN 201310205510A CN 103272313 B CN103272313 B CN 103272313B
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Abstract
The invention discloses a filter with blood return preventing time controllable on a medical infusion set and a medical infusion set. The filter comprises a barrel body with two communicated ends and a liquid stopping type filtering membrane dividing the inner cavity of the barrel body into an upper portion and a lower portion, the filter further comprises a water storage tank, the water storage tank is fixedly arranged on the upper half portion of the inner cavity of the barrel body, at least one through hole is formed in the water storage tank, each through hole is connected with a flow control plug in a clamping mode to form a clearance, at least one permeable filtering membrane layer is sleeved on the flow control plug, and the permeable filtering membrane is in close fit with the through holes through the flow control plug. The filter has the functions of preventing no dripping and preventing backflow, can guarantee that residual medicine liquid in the water storage tank has enough time to drip slowly through the clearances when the medical infusion set will complete infusion, the venous pressure generated in the blood spread of the human body is overcome, the fact that the medical infusion set has enough preparation time to prevent blood return in an infusion process is guaranteed, and the time of preventing the blood return is made to be capable of being controlled.
Description
Technical field
The filter that the blood return prevention time on a kind of medical Transfusion device of the present invention relates to is controlled and medical Transfusion device.
Background technology
The liquid medicine filter of existing transfusion device has two kinds, a kind of is the filter of disposable infusion set, this is straight to filter, upper connecting tube is perpendicular to filter cover, and lower linking tube, perpendicular to filter lower cover, is generally placed on the front of the intravenous needle of transfusion device, the microgranule of more than 15 microns can only be filtered, filter membrane is circular, and diameter is generally all smaller, is generally not more than 12.5mm; Another kind is accurate filter, can filter the microgranule of more than 5 microns, and General Requirements filter area is enough large, is generally greater than 350mm
2, because area is excessive, for the ease of producing, so accurate filter is not preferably straight to filter, therefore all use horizontal tray type structure, namely upper connecting tube and lower linking tube are all parallel with the upper and lower covers of filter.
Existing most of transfusion device will be when when infusing, medicinal liquid will flow, and the medicinal liquid in transfusion device can flow down always, until medicinal liquid just stops flowing during the gravitational equilibrium of the venous pressure of human body and transfusion device Chinese medicine.Now, due to the diffusion of liquid, the blood in human body can be back in the conduit of transfusion device, and this phenomenon not only causes the terrified of patient and nurse to spend the aerofluxus etc. again of a lot of time, and can form thrombosis very soon, even can cause the generation of malpractice.In order to address these problems, patented product both domestic and external has automatic liquid-stopping transfusion apparatus, and principle bottom Murphy pipe or in the below of Murphy pipe, installs a device, after medicinal liquid stream is complete, go out water surface self-closed, this type of patented product is thought by mistake can blood return prevention.But set forth in " during transfusion the position of actuator and the research of a blood back " literary composition of " the southern nursing magazine nineteen ninety-five volume Two first phase ", after going out water surface self-closed, the liquid at the back side is in complete agravity state (be namely similar to actuator in article and shut state), because the effect of human vein pressure and liquid have the effect of phase counterdiffusion, cause blood can flow back in transfusion device, so the effect of blood return prevention cannot be reached, and more easily can cause the formation of thrombosis like this, more easily cause the generation of malpractice.Also the effect by arranging a drainage strip a small amount of debris being reached blood return prevention by the front end that the method for syphon drainage introduces scalp acupuncture is had in addition in prior art, but drainage strip processing technology compares and is difficult to molding, manufacturing cost is relatively expensive, be difficult to formation scale, therefore this product is also difficult to become real practical product.
Summary of the invention
The technical problem to be solved in the present invention can not realize the function of blood return prevention to overcome transfusion device in prior art, causes the defect easily causing malpractice, the filter providing the blood return prevention time on a kind of medical Transfusion device controlled and medical Transfusion device.
The present invention solves above-mentioned technical problem by following technical proposals:
The filter that the blood return prevention time on a kind of medical Transfusion device of the invention provides is controlled, its feature is, filter comprises the only liquid type filter membrane that bowl inner chamber is separated into top and the bottom by staving and that two ends communicate, described filter also comprises an aqua storage tank, described aqua storage tank is fixedly arranged on the first half of described bowl inner chamber, described aqua storage tank is provided with at least one through hole, each described through hole is all formed with a gap with the mutual clamping of a flow control plug, described flow control is arranged with at least one deck permeability filter membrane beyond the Great Wall, described permeability filter membrane is closely cooperated by described flow control plug and described through hole.
Filter of the present invention is provided with described aqua storage tank, aqua storage tank can store enough medicinal liquids when described medical Transfusion device is infused, and the medicinal liquid stored in described aqua storage tank just can be utilized to carry out anti-return blood like this when described medical Transfusion device is near completion transfusion.And in order to dripping of allowing the medicinal liquid of described aqua storage tank inside can be slow and unobstructed, in the present invention, described aqua storage tank is offered at least one through hole described, and each described through hole is all formed with a gap with the mutual clamping of a flow control plug, like this, utilize the gap between described through hole and described flow control plug that medicinal liquid just can be made slowly to drip.Simultaneously, by at least one deck permeability filter membrane described in sheathed beyond the Great Wall in described flow control, and described permeability filter membrane and described through hole closely cooperate, just make medicinal liquid when dripping through described at least one deck permeability filter membrane, delay the time that described medicinal liquid drips further, and then also just extend the time of blood return prevention.
And by just can control the speed that the medicinal liquid in described aqua storage tank flows down particularly to the adjustment of the described size of at least one deck permeability filter membrane and the thickness of filter membrane, reaching can the effect of regulable control blood return prevention time.
Like this, utilize filter of the present invention just can ensure in described medical Transfusion device, to keep medicinal liquid to have time enough sluggish flow to overcome the venous pressure of blood of human body diffusion, and then ensure that medical Transfusion device can have anti-return blood of sufficient time when infusing.
Preferably, described filter also comprises at least one intake tunnel and at least one exhaust passage.Wherein, while medicinal liquid enters described filter, just by least one exhaust passage described, aqua storage tank in filter and the air only between liquid type filter membrane can be discharged, and first the medicinal liquid in filter also can flow down from least one intake tunnel described.
Preferably, described permeability filter membrane is hydrophilic filter film, for blood return prevention effect.
Preferably, described permeability filter membrane is the circular fiber film that internal diameter is more than or equal to 1mm.Certainly, described permeability filter membrane also can be the filter membrane that the permeability such as nylon membrane or poly (ether sulfone) film is strong.
Preferably, the weight of described circular fiber film of every square metre is more than or equal to 50g.
Preferably, described permeability filter membrane and described through hole are by clamping or bonding to realize closely cooperating.
Preferably, the spacing in described gap is less than or equal to 1mm.
By the spacing in described gap being set to be less than or equal to 1mm, ensure that described flow control plug just can be connected in described through hole under without the need to the assosting effect of adhesive etc., medicinal liquid can be allowed slowly to drip along described gap simultaneously.Meanwhile, the gap between described through hole and flow control plug can be set to erratic shape, the time that this makes it possible to the medicinal liquid of same volume is flow down is uncertain, and then also just can extend the time of blood return prevention to greatest extent.
Preferably, at least one through hole described is arranged at bottom described aqua storage tank.
Preferably, the shape of described flow control plug is cylindrical or polygon solid figure.Certainly, the shape of described flow control plug also can be set to other shape, as long as can realize function of the present invention.
Preferably, described filter also comprises one and the close-fitting upper cover of described staving, covers and offer at least one air vent on described, and the lower surface of described upper cover is sticked and covers the hydrophobic filter film that blocks water of at least one air vent described.
Described filter the first half inside offers at least one air vent, described air vent at least airtight covering water preventing ability hydrophobic filter film.
At least one air vent described is covered by the described hydrophobic filter film phonograph seal that blocks water, just can ensure when medicinal liquid is full of described filter, medicinal liquid can not flow out from least one air vent described, and be full of in the process of described filter at medicinal liquid, make when described filter and outside air can be kept unobstructed air pressure in described filter and atmospheric pressure consistent, and then ensure that the stable speed of dripping of medicinal liquid.
Preferably, described staving is provided with at least one steam vent, distance between described steam vent and described upper cover is 1/1 to two/3rd of described staving length, and the inwall of described staving is sticked and covers the hydrophobic filter film that blocks water of at least one steam vent described.
Because Murphy pipe requires that liquid level wherein must not exceed 2/1 to three/2nds of Murphy pipe total height, therefore, in the present invention, described staving is offered at least one steam vent described, and the distance between described steam vent and described upper cover is 1/1 to two/3rd of described staving length.Like this, when the medicinal liquid in described filter does not arrive the height of at least one steam vent described, air wherein can be discharged by least one steam vent described, and first medicinal liquid can be full of filter until reach the height of at least one steam vent described.And after complete moistening at least one steam vent described of medicinal liquid, block water hydrophobic filter film described in described inner wall of barrel is sticked, air is caused to be discharged by least one steam vent described again.Now, due to the action of gravity of medicinal liquid self, medicinal liquid is just made to drip.
Further, due at least one steam vent described, make the liquid level of filter of the present invention can not exceed 2/1 to three/2nds of the total height of described staving, and then filter of the present invention can directly be used as Murphy pipe.
Preferably, described filter also comprises one to insert described staving inside hollow tubing conductor from described upper cover, distance between the bottom of described hollow tubing conductor and described upper cover is 1/1 to two/3rd of described staving length, and the inside of described hollow tubing conductor is provided with one and blocks water hydrophobic filter film.
Utilize described hollow tubing conductor that the liquid level of filter of the present invention can be made equally can not to exceed 2/1 to three/2nds of the total height of described staving, and then make filter of the present invention directly to use as Murphy pipe equally.Its specific implementation principle is opened on described staving close with at least one above-mentioned steam vent, just repeats no more at this.
Preferably, described staving adopts flexible material to make.Like this, flexible material can make described staving can deformation, such as adopt PVC(polrvinyl chloride) etc. soft material manufacture described staving, just manually described staving can be set to arbitrary shape, thus just when liquid enters described staving, the air in staving can be discharged, also the liquid level of the medicinal liquid in staving can be maintained 2/1 to three/2nds of the total height that can not exceed described staving, thus described staving can be used as Murphy pipe equally.
The object of the invention is to additionally provide a kind of medical Transfusion device, its feature is, it comprises and carries out by infusion tube the bottle plug puncture unit, Murphy pipe, flow regulator and the intravenous needle that connect successively, described medical Transfusion device also comprises above-mentioned filter, and described filter is arranged between described bottle plug puncture unit and described intravenous needle by infusion tube.And the vertical height of described medical Transfusion device entirety is higher than the vertical height of the venous pressure of the optional position of human body when infusing, and described medical filter is made to have the function of blood return prevention.
The object of the invention is to additionally provide a kind of medical Transfusion device, its feature is, it comprises and carries out the bottle plug puncture unit connected, the above-mentioned filter as Murphy pipe, flow regulator and intravenous needle successively by infusion tube.
Above-mentioned filter can use as Murphy pipe, like this, while making medical Transfusion device of the present invention normally to work equally, also has the function of blood return prevention.
Positive progressive effect of the present invention is: filter of the present invention can ensure that the medicinal liquid of medical Transfusion device when completing transfusion in aqua storage tank is had time enough slowly to be dripped down by gap and overcome the venous pressure of blood of human body diffusion, and then ensure that medical Transfusion device can have anti-return blood of sufficient time when infusing, and can delay by filter membrane the time that described medicinal liquid drips further, and then also extend the time of blood return prevention further.Meanwhile, the present invention can be applicable to any one medical Transfusion device or can be used as Murphy pipe use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blood return prevention time controlled filter on the medical Transfusion device of embodiments of the invention 1.
Fig. 2 be embodiments of the invention 1 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug axonometric chart when combining.
Fig. 3 be embodiments of the invention 1 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug upward view when combining.
Fig. 4 be embodiments of the invention 2 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug axonometric chart when combining.
Fig. 5 be embodiments of the invention 2 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug upward view when combining.
Fig. 6 be embodiments of the invention 3 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug axonometric chart when combining.
Fig. 7 be embodiments of the invention 3 medical Transfusion device on blood return prevention time controlled filter in aqua storage tank and flow control plug upward view when combining.
Fig. 8 is the structural representation of the blood return prevention time controlled filter on the medical Transfusion device of embodiments of the invention 4.
Fig. 9 is the structural representation of the blood return prevention time controlled filter on the medical Transfusion device of embodiments of the invention 5.
Figure 10 is the first explosive view of the blood return prevention time controlled filter on the medical Transfusion device of embodiments of the invention 6.
Figure 11 is the second explosive view of the blood return prevention time controlled filter on the medical Transfusion device of embodiments of the invention 6.
Figure 12 is the structural representation of the medical Transfusion device of embodiments of the invention 7.
Figure 13 is the structural representation of the medical Transfusion device of embodiments of the invention 8.
Figure 14 is the structural representation of the medical Transfusion device of embodiments of the invention 9.
Detailed description of the invention
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1, Figure 2 and Figure 3, the controlled filter of the blood return prevention time on the medical Transfusion device of the present embodiment comprises a staving 1 and close-fitting upper cover 2 and base 3 with described staving respectively.Described upper cover 2 and base 3 are inserted with water inlet pipe 21 and outlet pipe 31 respectively, seal between described base 3 and described staving 1 and be fixed with an only liquid filter membrane 4.
Described filter also comprises an aqua storage tank 5, it is inner that described aqua storage tank 5 is fixedly arranged on described staving 1, described aqua storage tank 5 is provided with at least one through hole 51, each described through hole 51 all with a flow control plug 6 mutually clamping be formed with a gap 7, described flow control plug 6 is arranged with at least one deck filter membrane 8, described filter membrane 8 closely cooperates with described through hole 51.
Filter of the present invention is provided with described aqua storage tank 5, aqua storage tank 5 can store enough medicinal liquids when described medical Transfusion device is infused, and the medicinal liquid stored in described aqua storage tank 5 just can be utilized to carry out anti-return blood like this when described medical Transfusion device is near completion transfusion.And in order to dripping of allowing the medicinal liquid of described aqua storage tank 5 inside can be slow and unobstructed, in the present invention, described aqua storage tank 5 is offered at least one through hole 51 described, and each described through hole 51 all with a flow control plug 6 mutually clamping be formed with a gap 7, like this, utilize the gap 7 between described through hole 51 and described flow control plug 6 that medicinal liquid just can be made slowly to drip.Simultaneously, by at least one deck filter membrane 8 described in sheathed on described flow control plug 6, and described filter membrane 8 closely cooperates with described through hole 51, just make medicinal liquid when dripping through described at least one deck filter membrane 8, delay the time that described medicinal liquid drips further, and then also just extend the time of blood return prevention.
And by just can control the speed that the medicinal liquid in described aqua storage tank 5 flows down particularly to the adjustment of the described size of at least one deck filter membrane 8 and the thickness of filter membrane 8, reaching can the effect of regulable control blood return prevention time.
Like this, utilize filter of the present invention just can ensure in described medical Transfusion device, to keep medicinal liquid to have time enough sluggish flow to overcome the venous pressure of blood of human body diffusion, and then ensure that medical Transfusion device can have anti-return blood of sufficient time when infusing.
Preferably, the spacing in described gap 7 is less than or equal to 1mm.
By the spacing in described gap 7 being set to be less than or equal to 1mm, ensure that described flow control plug 6 just can be connected in described through hole 51 under without the need to the assosting effect of adhesive etc., medicinal liquid can be allowed slowly to drip along described gap 7 simultaneously.Meanwhile, the gap 7 between described through hole 51 and flow control plug 6 can be set to erratic shape, the time that this makes it possible to the medicinal liquid of same volume is flow down is uncertain, and then also just can extend the time of blood return prevention to greatest extent.
Preferably, at least one through hole 51 described is arranged at the bottom of described aqua storage tank 5, thus can ensure that the medicinal liquid stored in described aqua storage tank 5 can be flowed out by least one through hole 51 described completely, and then can extend the time of blood return prevention to greatest extent.
Preferably, the shape of described flow control plug 6 is cylindrical or polygon solid figure.Certainly, the formation of described flow control plug 6 also can be set to other shape, as long as can realize function of the present invention.
In specific embodiment of the invention process, described upper cover 2 also offers at least one air vent 22, be sticked in the lower surface of described upper cover 2 simultaneously and cover the hydrophobic filter film 23 that blocks water of at least one air vent 22 described.
At least one air vent 22 described is covered by described hydrophobic filter film 23 sealing that blocks water, just can ensure when medicinal liquid is full of described filter, medicinal liquid can not flow out from least one air vent 22 described, and be full of in the process of described filter at medicinal liquid, make when described filter and outside air can be kept unobstructed air pressure in described filter and atmospheric pressure consistent, and then ensure that the stable speed of dripping of medicinal liquid.
And described filter membrane 8 can adopt hydrophilic filter film (i.e. permeability filter membrane), interior diameter specifically can be adopted to be more than or equal to the circular fiber film of 1mm.Certainly, described filter membrane 8 also can be nylon membrane or poly (ether sulfone) film.And preferably, the weight of the described circular fiber film of every square metre can be set to 90g.Meanwhile, described filter membrane 8 and described through hole 51 specifically can realize closely cooperating by clamping or bonding mode.
The specific works principle of filter of the present invention is: after medicinal liquid enters described staving 1 by the water inlet pipe 21 of the upper cover 2 of described filter, because the medicinal liquid that enters is by described after only liquid filter membrane 4 soaks, under the effect that air in described staving 1 extrudes in the flowing of medicinal liquid, can be discharged by block water described on described upper cover 2 hydrophobic filter film 23 and at least one air vent 22 described.Block water after hydrophobic filter film 23 when medicinal liquid covers full wafer, due to the resistance effect of the described hydrophobic filter film 23 that blocks water, medicinal liquid just cannot be discharged by least one air vent 22 described.Now, medicinal liquid will break through described only liquid filter membrane 4, flows out described filter, get final product normal infusion after flowing to the intravenous needle of described medical Transfusion device by the outlet pipe 31 of described base 3.
And all medicinal liquid streams outside the aqua storage tank 5 in described staving 1 complete after, during liquid automatic liquid-stopping below described only liquid filter membrane 4, medicinal liquid in described aqua storage tank can be dripped by the gap 7 formed between described flow control plug 6 and described through hole 51, medicinal liquid can through described at least one deck filter membrane 8 when dripping, delay the time that described medicinal liquid drips further, and then also just extend the time of blood return prevention.Finally, medicinal liquid is proceeded with regard to making whole infusion process by described only liquid filter membrane 4 again, thus maintain one slowly transfusion state to overcome human vein pressure, effectively serve the effect of blood return prevention.Simultaneously, because the gap 7 formed between described through hole 51 and described flow control plug 6 can irregularly be arranged, size and the thickness of adding described filter membrane 8 sheathed on flow control plug 6 can regulate, just can control the speed that the medicinal liquid in described aqua storage tank 5 drips down, reaching can the effect of time of regulable control blood return prevention.
Embodiment 2:
As shown in Figures 4 and 5, the difference of the present embodiment and embodiment 1 is: in the present embodiment, described flow control plug 6 is provided with the fluting 61 that spacing is not more than 0.5mm, and the inwall that described flow control plug 6 removes remainder outside described fluting 61 and described through hole 51 forms and is sealed and matched.Like this, just gap can be formed between described fluting 61 and described through hole 51.And the medicinal liquid in described aqua storage tank 5 just can be flowed out by described gap, again through can the filter membrane 8 of regulable control flow velocity to described only liquid filter membrane 4, and then just whole infusion process is proceeded, thus maintain one slowly transfusion state to overcome human vein pressure, equally effectively serve the effect of blood return prevention.
Embodiment 3:
As shown in FIG. 6 and 7, the difference of the present embodiment and embodiment 1 is: in the present embodiment, the edge of described through hole 51 is provided with the fluting 52 that spacing is not more than 0.5mm, and described flow control plug 6 forms with the edge remainder removed outside described fluting 52 of described through hole 51 and is sealed and matched.Like this, just gap can be formed between described fluting 52 and described flow control plug 6.And the medicinal liquid in described aqua storage tank 5 just can be flowed out by described gap, again through can the filter membrane 8 of regulable control flow velocity to described only liquid filter membrane 4, and then just whole infusion process is proceeded, thus maintain one slowly transfusion state to overcome human vein pressure, equally effectively serve the effect of blood return prevention.
Embodiment 4:
As shown in Figure 8, the difference of the present embodiment and embodiment 1 is: in the present embodiment, described staving 1 is provided with at least one steam vent 11, distance between described steam vent 11 and described upper cover 2 be described staving 1 length 1/1 to two/3rd between arbitrary value, the inwall of described staving 1 is sticked and covers the hydrophobic filter film 12 that blocks water of at least one steam vent 11 described.And in the present embodiment, described staving 1 is not provided with at least one air vent 22 described, block water described in also not having hydrophobic filter film 23.
Because Murphy pipe requires that liquid level wherein must not exceed 2/1 to three/2nds of Murphy pipe total height, therefore, in the present invention, described staving 1 is offered at least one steam vent 11 described, and the distance between described steam vent 11 and described upper cover 2 be described staving 1 length 1/1 to two/3rd between arbitrary value.Like this, when medicinal liquid instills in described filter, and when the medicinal liquid in described filter does not arrive the height of at least one steam vent 11 described, due to the effect of described only liquid filter membrane 4, first medicinal liquid can form extruding to the air in filter and medicinal liquid can not be flowed out along described outlet pipe 31.And air can be discharged by least one steam vent 11 described, first medicinal liquid can be full of filter until reach the height of at least one steam vent 11 described.And when complete moistening at least one steam vent 11 described of medicinal liquid and described in block water after hydrophobic filter film 12, block water hydrophobic filter film 12 described in described staving 1 inwall is sticked, and causes air to be discharged by least one steam vent 11 described again.And medicinal liquid can continue to instill in described filter, until after the air pressure in described filter adds that the gravity of medicinal liquid self makes medicinal liquid overcome the resistance of described only liquid filter membrane 4, medicinal liquid is just made to drip, and can keep liquid level the total height of described staving 1 2/1 to three/2nds position, meet the standard of Murphy pipe, and then filter of the present invention can directly be used as Murphy pipe.
Embodiment 5:
As shown in Figure 9, the difference of the present embodiment and embodiment 1 is: in the present embodiment, described filter also comprises one to insert described staving 1 inside hollow tubing conductor 9 from described upper cover, distance between the bottom of described hollow tubing conductor 9 and described upper cover 2 is 1/1 to two/3rd of described staving 1 length, and the inside of described hollow tubing conductor 9 is provided with one and blocks water hydrophobic filter film 91.
When there being medicinal liquid to instill in described filter, and when the medicinal liquid in described filter does not arrive the height of at least one steam vent 11 described, due to the effect of described only liquid filter membrane 4, first medicinal liquid can form extruding to the air in filter and medicinal liquid can not be flowed out along described outlet pipe 31.And air can be discharged by described hollow tubing conductor 9, and after medicinal liquid arrives the bottom of described hollow tubing conductor 9, block water described in continuing to rise to along described hollow tubing conductor 9 hydrophobic filter film 91, if described in the hydrophobic filter film 91 that blocks water be arranged at the bottom of described hollow tubing conductor 9, after the hydrophobic filter film 91 that blocks water then bottom the moistening described hollow tubing conductor 9 of described medicinal liquid, air just cannot be derived by described hollow tubing conductor 9 again.And medicinal liquid can continue to instill in described filter, until after the air pressure in described filter adds that the gravity of medicinal liquid self makes medicinal liquid overcome the resistance of described only liquid filter membrane 4, medicinal liquid is just made to drip, and can keep liquid level the total height of described staving 1 2/1 to three/2nds position, meet the standard of Murphy pipe, make filter of the present invention directly to use as Murphy pipe equally.
Certainly, the soft materials such as PVC are specifically used to manufacture described staving in the present embodiment, thus just manually described staving 1 can be set to arbitrary shape, thus just when liquid enters described staving 1, the air in staving 1 can be discharged, also the liquid level of the medicinal liquid in staving can be maintained 2/1 to three/2nds of the total height that can not exceed described staving 1, thus described staving can be used as Murphy pipe equally.
Embodiment 6:
As shown in Figures 10 and 11, the difference of the present embodiment and embodiment 1 is: in the present embodiment, described filter also comprises at least one intake tunnel and at least one exhaust passage, and in the specific implementation process of the present embodiment, described filter comprises water inlet pipe 15 and an escape pipe 16.Wherein, while medicinal liquid enters described filter, just by described escape pipe 16, the air in filter only between liquid filter membrane 4 and aqua storage tank 5 can be discharged, and first the medicinal liquid in filter also can flow down from described water inlet pipe 15.Certainly, described intake tunnel and described exhaust passage also can realize in other way, as long as can meet corresponding function.
In addition, in the present embodiment, described staving 1 also can use as described aqua storage tank 5 simultaneously, and the part lower than described water inlet pipe 15 of described staving 1 can use as described aqua storage tank 5.
Embodiment 7:
As shown in figure 12, the medical Transfusion device of the present embodiment comprises and carries out by infusion tube 61 bottle plug puncture unit 62 that connects successively, Murphy pipe 63, flow regulator 64 and intravenous needle 65, also comprise as embodiment 1, filter described in 2 or 3, described filter is serially connected between described Murphy pipe 63 and described flow regulator 64 by infusion tube 61, and the vertical height of described medical Transfusion device entirety is higher than the vertical height of the venous pressure of the optional position of human body when infusing, thus make the medical Transfusion device of the present embodiment have blood return prevention function, and can time of regulable control blood return prevention.
Embodiment 8:
As shown in figure 13, the difference of the present embodiment and embodiment 7 is: in the present embodiment, described filter is serially connected between described bottle plug puncture unit 62 and described Murphy pipe 63 by infusion tube 61, and the vertical height of described medical Transfusion device entirety is higher than the vertical height of the venous pressure of the optional position of human body when infusing, thus make the medical Transfusion device of the present embodiment have blood return prevention function, and can time of regulable control blood return prevention.
Embodiment 9:
As shown in figure 14, the medical Transfusion device of the present embodiment comprises that the bottle plug puncture unit 62, the filter as described in embodiment 4 or embodiment 5 that carry out successively connecting by infusion tube 61 use as Murphy pipe, flow regulator 64 and intravenous needle 65, and the vertical height of described medical Transfusion device entirety is higher than the vertical height of the venous pressure of the optional position of human body when infusing.Wherein, the filter in embodiment 4 or embodiment 5 can use as Murphy pipe, and the medical Transfusion device of the present embodiment can be made to have blood return prevention function, and can time of regulable control blood return prevention.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection scope of the present invention.
Claims (15)
1. the filter that the blood return prevention time on a medical Transfusion device is controlled, it is characterized in that, filter comprises the only liquid type filter membrane that bowl inner chamber is separated into top and the bottom by staving and that two ends communicate, described filter also comprises an aqua storage tank, described aqua storage tank is fixedly arranged on the first half of described bowl inner chamber, described aqua storage tank is provided with at least one through hole, each described through hole is all formed with a gap with the mutual clamping of a flow control plug, described flow control is arranged with at least one deck permeability filter membrane beyond the Great Wall, described permeability filter membrane is closely cooperated by described flow control plug and described through hole.
2. filter as claimed in claim 1, it is characterized in that, described filter also comprises at least one intake tunnel and at least one exhaust passage.
3. filter as claimed in claim 1, it is characterized in that, described permeability filter membrane is hydrophilic filter film.
4. filter as claimed in claim 3, it is characterized in that, described permeability filter membrane is the circular fiber film that internal diameter is more than or equal to 1mm.
5. filter as claimed in claim 4, is characterized in that, the weight of the described circular fiber film of every square metre is more than or equal to 50g.
6. filter as claimed in claim 1, it is characterized in that, described permeability filter membrane and described through hole are by clamping or bonding to realize closely cooperating.
7. filter as claimed in claim 1, it is characterized in that, the spacing in described gap is less than or equal to 1mm.
8. filter as claimed in claim 1, it is characterized in that, at least one through hole described is arranged at bottom described aqua storage tank.
9. as the filter in claim 1-8 as described in any one, it is characterized in that, the shape of described flow control plug is cylindrical or polygon solid figure.
10. filter as claimed in claim 9, it is characterized in that, described filter also comprises one and the close-fitting upper cover of described staving, covers and offer at least one air vent on described, and the lower surface of described upper cover is sticked and covers the hydrophobic filter film that blocks water of at least one air vent described.
11. filters as claimed in claim 10, it is characterized in that, described staving is provided with at least one steam vent, distance between described steam vent and described upper cover is 1/1 to two/3rd of described staving length, and the inwall of described staving is sticked and covers the hydrophobic filter film that blocks water of at least one steam vent described.
12. filters as claimed in claim 10, it is characterized in that, described filter also comprises one to insert described staving inside hollow tubing conductor from described upper cover, distance between the bottom of described hollow tubing conductor and described upper cover is 1/1 to two/3rd of described staving length, and the inside of described hollow tubing conductor is provided with one and blocks water hydrophobic filter film.
13. filters as claimed in claim 10, is characterized in that, described staving adopts flexible material to make.
14. 1 kinds of medical Transfusion devices, it is characterized in that, it comprises and carries out by infusion tube the bottle plug puncture unit, Murphy pipe, flow regulator and the intravenous needle that connect successively, described medical Transfusion device also comprises as the filter in claim 1-10 as described in any one, and described filter is arranged between described bottle plug puncture unit and described intravenous needle by infusion tube.
15. 1 kinds of medical Transfusion devices, is characterized in that, it comprise carry out successively connecting by infusion tube bottle plug puncture unit, if the filter in claim 11-13 as described in any one is as Murphy pipe, flow regulator and intravenous needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103623478B (en) * | 2013-10-31 | 2015-03-04 | 上海金塔医用器材有限公司 | Disposable liquid-stopping and flow-slowing infusion apparatus |
| CN103977486A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Blood return prevention time-controllable filter for medical infusion apparatus and medical infusion apparatus |
| CN105079917A (en) * | 2015-09-16 | 2015-11-25 | 武汉智迅创源科技发展股份有限公司 | Automatic anti-bubble liquid-stopping filter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202637636U (en) * | 2012-03-16 | 2013-01-02 | 魏安 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
| CN202699734U (en) * | 2012-07-07 | 2013-01-30 | 祁健 | Disposable safe infusion set |
| CN202892521U (en) * | 2012-06-21 | 2013-04-24 | 陆春梅 | Anti-blood-return filter capable of exhausting air automatically of medical infusion apparatus |
| CN203075349U (en) * | 2012-08-07 | 2013-07-24 | 陆春梅 | Anti-blood-reflux filter capable of discharging air automatically on medical transfusion system and medical transfusion system thereof |
| CN203389171U (en) * | 2013-05-28 | 2014-01-15 | 上海金塔医用器材有限公司 | Filter controllable in blood return preventing time and used in medical infusion set and medical infusion set |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202637636U (en) * | 2012-03-16 | 2013-01-02 | 魏安 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
| CN202892521U (en) * | 2012-06-21 | 2013-04-24 | 陆春梅 | Anti-blood-return filter capable of exhausting air automatically of medical infusion apparatus |
| CN202699734U (en) * | 2012-07-07 | 2013-01-30 | 祁健 | Disposable safe infusion set |
| CN203075349U (en) * | 2012-08-07 | 2013-07-24 | 陆春梅 | Anti-blood-reflux filter capable of discharging air automatically on medical transfusion system and medical transfusion system thereof |
| CN203389171U (en) * | 2013-05-28 | 2014-01-15 | 上海金塔医用器材有限公司 | Filter controllable in blood return preventing time and used in medical infusion set and medical infusion set |
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| CN103272313A (en) | 2013-09-04 |
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Application publication date: 20130904 Assignee: Hubei Jinta Medical Equipment Co.,Ltd. Assignor: SHANGHAI JINTA MEDICAL Co.,Ltd. Contract record no.: X2022310000173 Denomination of invention: Filter and medical infusion set with controllable anti blood return time on medical infusion set Granted publication date: 20150304 License type: Common License Record date: 20221213 |