CN103656780A - Novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device - Google Patents
Novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device Download PDFInfo
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- CN103656780A CN103656780A CN201210333229.8A CN201210333229A CN103656780A CN 103656780 A CN103656780 A CN 103656780A CN 201210333229 A CN201210333229 A CN 201210333229A CN 103656780 A CN103656780 A CN 103656780A
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Abstract
The invention relates to a novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device. A double-direction negative pressure flow stopping device, a negative pressure conducting tee joint and a one-way pressure check valve are arranged between the lower section of a Murphy's tube and a lower infusion duct of disposable infusion apparatus, so that the infusion apparatus can be cut off automatically after completion of infusion or in the process of infusion, and backflow blood return can be prevented in any state. Meanwhile, pressure change information is generated and conducted. The negative pressure conducting tee joint on the device is used for reserving a port for external acoustic alarm and outputting information. According to the negative pressure conducting device, original infusion apparatus is improved little, cost is low, industrial production can be realized easily, the working habits of medical workers are not changed, and popularization and application are convenient. Moreover, the negative pressure conducting device can effectively improve the working efficiency of nurses and reduce patient pain.
Description
Technical field
The present invention relates to a kind of automatic cut-off device of new disposable venous transfusion, particularly a kind of can be in infusion process, the positive/negative pressure that utilizes transfusion device inner liquid medicine gravity to produce is realized automatic cut-off, anti-return blood, is provided with the automatic cut-off device that produces and utilize air negative pressure conducting structure simultaneously.
Background technology
The disposable intravenous infusion set using in the market, because there is no automatic cut-off function, in venous transfusion process, when medicinal liquid is totally lost, if not in time close flow control valve stopping infusion, or continuous bottle is changed dressings, will cause lower tube for transfusion air inlet, blood back, blood coagulation phenomenon, giving continues to infuse causes obstacle, to patient, increases extra misery, also easily form thrombosis, to patient, bring potential hazard; Existing disposable transfusion device is because threeway pressure detecting mouth is not set, and the pressure in the time of cannot be according to transfusion in tube for transfusion changes, and utilizes the simplest and the most direct, economic, practical method, carries out Real-time Monitor Management, has expended a large amount of recessiveness of medical personnel and has worked; Family members look after patient's transfusion and have taken a large amount of human resourcess, have consumed a large amount of public resource of hospital and society; Not can accurately grasp the time of changing medicinal liquid or stopping infusion, can not guarantee that transfusion work can access timely processing, affected medical personnel's service quality and work efficiency; Before inventor, once design multiple technologies scheme and solved the problems referred to above, in a plurality of problems, obtain innovation and break through, but inventor is still exploring and attempting to find and thoroughly existing automatic cut-off in solution venous transfusion, the anti-optimal path of problem and the methods of the simplest and the most direct practicality such as blood, negative pressure utilization of flowing back to.
Summary of the invention
The object of the present invention is to provide a kind of existing shortcoming and defect of prior art that overcomes, realize infusion-completed automatic cut-off, under any state, prevent the anti-blood that flows back to, and the device of negative pressure conduction function can be provided by threeway pressure interface.
In order to achieve the above object, technical scheme of the present invention is achieved in that the two-way positive/negative pressure cut-off of a kind of single intravenous infusion negative pressure conduction device 1, particularly can automatic cut-off, under any state, prevent the anti-automatic cut-off device that flows back to blood, possesses negative pressure conduction function, it is characterized in that: described positive/negative pressure cut-off negative pressure conduction device 1 and Murphy's dropper hypomere 1-1 Integral design, it is by Murphy's dropper hypomere 1-1, bi-directional negative pressure flow-stop valve 1-2, threeway negative pressure conduction module 1-3, uniaxial pressure stop valve 1-4 forms; Its structural relation is: bi-directional negative pressure flow-stop valve 1-2, be arranged in Murphy's dropper hypomere 1-1, valve body drain pipe 1-2-1-8 on its flow-stop valve body structure part of bi-directional negative pressure flow-stop valve 1-2 1-2-1, is arranged under Murphy's dropper in the vacuum current-stopping valve construction section 1-1-1-1 in liquid outlet channel 1-1-2; Threeway negative pressure conduction module 1-3 is arranged between the assembly and uniaxial pressure stop valve 1-4 of Murphy's dropper hypomere 1-1 and bi-directional negative pressure flow-stop valve 1-2; Threeway negative pressure conduction module 1-3, the upper binding head 1-3-1-1 of its longitudinal pipe 1-3-1, in the threeway module construction section 1-1-1-2 on the lower liquid outlet channel 1-1-2 of embedding Murphy's dropper hypomere 1-1, is enclosed within outside bi-directional negative pressure flow-stop valve drain pipe 1-2-1-8; Threeway assembling outer ring surface 1-4-1-3 on the valve body structure part 1-4-1 of its lower union joint and uniaxial pressure stop valve 1-4 is connected, and is assemblied in its outside; The medicine liquid outlet 1-4-3-5 of uniaxial pressure stop valve 1-4 is connected and communicates with transfusion catheter 1-5 under transfusion device.
The two-way positive/negative pressure cut-off of described disposable intravenous infusion set negative pressure conduction device, its vacuum current-stopping valve 1-2, is positioned at Murphy's dropper hypomere 1-1; It is by flow-stop valve body structure part 1-2-1, elasticity fluid stopping latex diaphragm 1-2-2, and flow-stop valve air pressure cover 1-2-3 forms; T shape flow-stop valve body structure part 1-2-1 is by flow-stop valve lead channel 1-2-1-1, flow-stop valve inlet opening 1-2-1-2, flow-stop valve sealing inlet 1-2-1-3, flow-stop valve sealing liquid outlet 1-2-1-4, flow-stop valve sealing guide face 1-2-1-5, fluid stopping film annular seal groove 1-2-1-6, flow-stop valve air pressure cover is installed anchor ring 1-2-1-7, valve body drain pipe 1-2-1-8, latex tubing collar extension limiting stand 1-2-1-9, valve body liquid outlet 1-2-1-10 forms; Flow-stop valve lead channel 1-2-1-1, flow-stop valve inlet opening 1-2-1-2, flow-stop valve sealing inlet 1-2-1-3, flow-stop valve sealing liquid outlet 1-2-1-4, flow-stop valve sealing guide face 1-2-1-5, fluid stopping film annular seal groove 1-2-1-6, flow-stop valve air pressure cover is installed anchor ring 1-2-1-7, is located at T shape flow-stop valve structural member top, and outward appearance is on circular solid, a plurality of flow-stop valve lead channel 1-2-1-1 are the radial circular geometry downside periphery that is located at, and are communicated with space in Murphy's dropper; A plurality of flow-stop valve inlet opening 1-2-1-2 in the form of a ring array in circular geometry, up/down perforation, it is suitable for reading for fluid stopping valve seal inlet 1-2-1-3, its end opening and flow-stop valve lead channel 1-2-1-1 corresponding connection one by one; Solid upside disc is fluid stopping valve seal guide face 1-2-1-5, and flow-stop valve sealing inlet 1-2-1-4 distributes on its face in the form of a ring; The center of flow-stop valve sealing guide face 1-2-1-5 is fluid stopping valve seal liquid outlet 1-2-1-4, it is extended for valve body drain pipe 1-2-1-8 downwards liquid outlet, drain pipe termination is valve body liquid outlet 1-2-1-10, drain pipe periphery, and approaching liquid outlet place is latex tubing limiting stand 1-2-1-9; Flow-stop valve elasticity fluid stopping latex diaphragm 1-2-2, it is by fluid stopping latex face, 1-2-2-1, fluid stopping latex film sheet annular edge 1-2-2-2 two parts form; Its fluid stopping latex face 1-2-2-1 is fitted on weight valve sealing guide face 1-2-1-5 in assembly, and its fluid stopping latex film sheet annular edge 1-2-2-2 embeds in fluid stopping film annular seal groove 1-2-1-6; Flow-stop valve air pressure cover 1-2-3 is by air pressure cover assembling inner ring surface 1-2-3-1, fluid stopping zona shape limit limiting stand 1-2-3-2, air pressure cover atmospheric pressure cavity 1-2-3-3 formation; Flow-stop valve air pressure cover 1-2-3, by the air pressure cover assembling inner ring surface 1-2-3-1 on it, flow-stop valve air pressure cover with T-valve structural member 1-2-1 on it is installed anchor ring 1-2-1-7 and is coordinated, air pressure cover fluid stopping film limiting stand 1-2-3-2 is just in time pressed on fluid stopping latex film sheet annular edge 1-2-2-2, on fluid stopping latex diaphragm 1-2-2-2, and between flow-stop valve air pressure cover, form airtight flow-stop valve valve atmospheric pressure cavity.
The two-way positive/negative pressure fluid stopping of described single intravenous infusion negative pressure conduction device, 1-3 is by threeway longitudinal pipe 1-3-1 in its negative pressure conduction threeway, threeway transverse pipe 1-3-2,, latex catheter 1-3-3 forms, pressurized seal cap 1-3-4; Its threeway longitudinal pipe upper binding head 1-3-1-1 is respectively on it: upper binding head latex tubing limiting stand 1-3-1-1-1, upper assembling inner ring surface 1-3-1-1-2, upper assembling outer ring surface 1-3-1-1-3, outer limiting stand 1-3-1-1-4; On it, assembling inner ring surface 1-3-1-1-2, upper assembling outer ring surface 1-3-1-1-3, coordinate installation with vacuum current-stopping valve drain pipe 1-2-1-8, Murphy's dropper liquid outlet channel threeway module construction section 1-1-1-2 respectively; Threeway longitudinal pipe lower union joint 1-3-1-2, is respectively on it: lower union joint latex tubing limiting stand 1-3-1-2-1, lower assembling inner ring surface 1-3-1-2-2; Latex catheter 1-3-3 its by conduit part 1-3-3, collar extension 1-3-3 on conduit, under conduit, collar extension 1-3-3-3 forms; Latex catheter 1-3-3-1 is positioned at threeway longitudinal pipe 1-3-1, on latex catheter, collar extension 1-3-3-2 is arranged on the latex tubing collar extension limiting stand 1-2-1-9 of bi-directional negative pressure flow-stop valve drain pipe on it, and between its upper binding head latex tubing limiting stand of threeway longitudinal pipe 1-3-1-1-1; Under latex catheter, collar extension is arranged on tee T lower union joint latex tubing limiting stand 1-3-1-2-1, and between the latex mozzle collar extension limiting stand 1-4-1-1 on pressure stop valve valve core structure part; On threeway longitudinal pipe 1-3-1, between its upper binding head 1-3-1-1 and lower union joint 1-3-1-2, have three through hole 1-3-1-3, three through hole 1-3-1-3 connect threeway longitudinal pipe 1-3-1 and threeway transverse pipe 1-3-2; Confined space in threeway longitudinal pipe 1-3-1 and its pipe between latex catheter 1-3-3, by three port 1-3-1-3, threeway transverse pipe 1-3-2 is communicated with outside; Threeway transverse pipe 1-3-3 and threeway longitudinal pipe 1-3-1 are structure as a whole, and its termination mouth 1-3-2-1 is external system connector, and its termination outer ring surface 1-3-2-2 is external system connector joint face.
Described threeway negative pressure conduction module 1-3, its transverse pipe 1-3-2 is upper with pressurized seal cap 1-3-4; Pressurized seal cap 1-3-4 outward appearance is column, and one in a tubular form; It comprises installing port 1-3-4-1, seal head 1-3-4-2, sealing-plug 1-3-4-3; Sealing cap installing port 1-3-4-1 is enclosed within on the outside connector 1-3-2-1 of threeway transverse pipe, and sealing-plug 1-3-4-3 embeds in its mouth of pipe.
The two-way positive/negative pressure fluid stopping of described disposable intravenous infusion set negative pressure conduction device, its pressure stop valve 1-4 is by valve core structure part 1-4-1, latex flow guide sleeve 1-4-2, stop valve kuppe 1-4-3 forms; The outward appearance of its valve core structure part 1-4-1, each section of cross section is the unequal positive circular cylindrical shape solid of diameter, is respectively pressure stop valve inlet 1-4-1-1 from top to bottom, latex mozzle collar extension limiting stand 1-4-1-2, outer ring surface 1-4-1-3, mounting limit platform 1-4-1-4 are installed in threeway; Spool mozzle 1-4-1-7, spool liquid outlet 1-4-1-8, spool end socket 1-4-1-9; In assembly 1, its inlet 1-4-1-1 is corresponding to be embedded in the lower collar extension 1-3-3-2 of the inner latex tubing of threeway longitudinal pipe, and latex mozzle collar extension limiting stand 1-4-1-2 is just in time pressed under latex catheter on collar extension 1-3-3-1; The corresponding installation of lower assembling inner ring surface 1-3-1-2-2 of outer ring surface 1-4-1-3 and threeway longitudinal pipe lower end is installed in its threeway, and the anchor ring mouth of lower assembling inner ring surface 1-3-1-2-2 and mounting limit platform 1-4-1-4 are identical; Latex flow guide sleeve 1-4-2, it is by flow guiding casing tube 1-4-2-1 suitable for reading, flow guiding casing tube end opening 1-4-2-2, flow guiding casing tube tube wall 1-4-2-3 forms; Latex flow guide sleeve 1-4-2 is sleeved on above spool mozzle 1-4-1-7, flow guiding casing tube suitable for reading with valve core structure part on flow guiding casing tube collar extension limiting stand 1-4-1-6 laminating, spool liquid outlet 1-4-1-8 is just in time pressed in below latex flow guide sleeve, the medicinal liquid flowing out from spool liquid outlet 1-4-1-8, flows out from flow guiding casing tube end opening 1-4-2-2; Stop valve kuppe 1-4-3, it is by kuppe installing port 1-4-3-1, and kuppe is installed inner ring surface 1-4-3-2, the spacing lattice 1-4-3-3 of flow guide sleeve, diversion cavity 1-4-3-4, stop valve medicine liquid outlet 1-4-3-5 forms; Stop valve kuppe 1-4-3 installs outer ring surface 1-4-1-5 by kuppe installing port 1-4-3-1 with the kuppe of valve core structure part and coordinates, be assembled on valve core structure part, its diversion cavity 1-4-3-4 just in time covers on the outside of flow guide sleeve 1-4-2, form airtight diversion cavity, flow guiding casing tube end opening 1-4-2-2 is placed on flow guide sleeve restriction lattice 1-4-3-3, both limited flow guide sleeve it is not glided with liquid stream in infusion process, grid shape structure also makes medicinal liquid flow out smoothly; The lower extension of stop valve kuppe 1-4-3 is stop valve medicine liquid outlet 1-4-3-5, and the medicinal liquid flowing out from flow guiding casing tube end opening 1-4-2-3, flows into airtight diversion cavity, from stop valve medicine liquid outlet 1-4-3-5, flows out.Stop valve liquid outlet 1-4-3-5 is communicated with lower tube for transfusion 1-5.
Beneficial effect
Can realize the automatic cut-off of transfusion device infusion-completed, under any circumstance anti-return blood is derived air positive/negative pressure by conduction three ports simultaneously, drives corollary system work, and transfusion is guarded and managed.This is practical little to former transfusion system structure change, and cost is low, easily realizes suitability for industrialized production, and does not change medical personnel's work habit, is easy to be extended and applied, and more effectively improves nurse job efficiency, reduces patient painful.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, also can be used as Figure of abstract.
Fig. 2 is Murphy's dropper hypomere structural representation of the present invention
Fig. 3 is bi-directional negative pressure flow-stop valve body structure schematic diagram of the present invention.
Fig. 4 is bi-directional negative pressure flow-stop valve body structure part schematic diagram of the present invention.
Fig. 5 is bi-directional negative pressure flow-stop valve body structure part side view of the present invention
Fig. 6 elasticity fluid stopping latex diaphragm schematic diagram
Fig. 7 flow-stop valve air pressure cover schematic diagram.
Fig. 8 negative pressure conduction threeway modular structure generalized section
Fig. 9 tee T longitudinal pipe, threeway transverse pipe schematic diagram.
Figure 10 latex catheter schematic diagram
The horizontal mouth of pipe sealing cap of Figure 11 threeway schematic diagram
Figure 12 uniaxial pressure stop valve structure schematic diagram
Figure 13 uniaxial pressure stop valve valve core structure part schematic diagram
Figure 14 latex flow guiding casing tube
Figure 15 stop valve kuppe
Wherein: 1, two-way positive/negative pressure cut-off negative pressure conduction device
1-1 Murphy's dropper hypomere
1-1-1 Murphy's dropper upper-lower section installation opening
Liquid outlet channel under 1-1-2 Murphy's dropper
1-1-1-1 vacuum current-stopping valve construction section
1-1-1-2 channel outlet threeway module construction section
1-2, bi-directional negative pressure flow-stop valve
1-2-1 flow-stop valve body structure part
1-2-2 elasticity fluid stopping latex diaphragm
1-2-3 flow-stop valve air pressure cover
1-2-1-1 flow-stop valve lead channel
1-2-1-2 flow-stop valve inlet opening
1-2-1-3 flow-stop valve sealing inlet
1-2-1-4 flow-stop valve sealing liquid outlet
1-2-1-5 flow-stop valve sealing guide face
1-2-1-6 fluid stopping film annular seal groove
1-2-1-7 flow-stop valve air pressure cover is installed anchor ring
1-2-1-8 valve body drain pipe
1-2-1-9 latex tubing collar extension limiting stand
1-2-1-10 valve body liquid outlet
1-2-2-1 fluid stopping latex film
1-2-2-2 fluid stopping latex film annular edge
1-2-3-1 air pressure cover assembling inner ring surface
1-2-3-2 fluid stopping zona shape limit limiting stand
1-2-3-3 air pressure cover atmospheric pressure cavity
1-3, negative pressure conduction threeway module:
1-3-1 tee T longitudinal pipe
1-3-2 threeway transverse pipe
1-3-3 latex catheter
1-3-4 pressurized seal plug
1-3-1-1 threeway longitudinal pipe upper binding head
1-3-1-2 threeway longitudinal pipe lower union joint
1-3-1-3 negative pressure cavity
1-3-1-1-1 upper binding head latex tubing limiting stand
The upper assembling of 1-3-1-1-2 inner ring surface
The upper assembling of 1-3-1-1-3 outer ring surface
1-3-1-2-1 lower union joint latex tubing limiting stand
Under 1-3-1-2-2, assemble inner ring surface
The horizontal mouth of pipe of 1-3-2-1 threeway
The horizontal mouth of pipe sealing cap of 1-3-2-2 threeway
1-3-2-3 adnexa assembling outer ring surface
Collar extension on 1-3-3-1 latex catheter
Collar extension under 1-3-3-2 latex catheter
1-3-4-1 seal
1-3-4-2 seal head
1-3-4-3 sealing-plug
1-4, uniaxial pressure stop valve
1-4-1 valve core structure part
1-4-2 latex flow guiding casing tube
1-4-3 stop valve kuppe
1-4-1-1 pressure stop valve inlet
1-4-1-2 latex mozzle collar extension limiting stand
1-4-1-3 threeway assembling outer ring surface
1-4-1-4 mounting limit platform
1-4-1-5 kuppe is installed outer ring surface
1-4-1-6 flow guiding casing tube collar extension limiting stand
1-4-1-7 spool mozzle
1-4-1-8 spool liquid outlet
1-4-1-9 spool end socket
1-4-2-1 flow guiding casing tube is suitable for reading
1-4-2-2 flow guiding casing tube end opening
1-4-2-3 flow guiding casing tube tube wall
1-4-3-1 kuppe installing port
1-4-3-2 kuppe is installed inner ring surface
The spacing lattice of 1-4-3-3 flow guide sleeve
1-4-3-4 diversion cavity
1-4-3-5 stop valve medicine liquid outlet
1-5, lower transfusion catheter
The specific embodiment
Now with regard to structural representation, with regard to this patent, do to illustrate: shown in accompanying drawing 1, in reality transfusion application, medicinal liquid flows into transfusion device Murphy's dropper hypomere 1-1 from medicine bottle, medicinal liquid in its pipe under action of gravity successively from the lead channel 1-2-1-1 of bi-directional negative pressure flow-stop valve 1-2, flow into inlet opening 1-2-1-2, under medicinal liquid pressure-acting, the elasticity fluid stopping latex diaphragm 1-2-2 that medicinal liquid in inlet 1-2-1-3 promotes to cover above it expands, medicinal liquid flows in the expansion space under it, flow to flow-stop valve sealing liquid outlet 1-2-1-4 and the valve body drain pipe 1-2-1-8 at flow-stop valve sealing guide face 1-2-1-5 center simultaneously, from valve body liquid outlet 1-2-1-10, flow out, the latex flowing into again in negative pressure conduction tee T 1-3 is led in 1-3-3 pipe, continue to flow downward, by latex catheter 1-3-3, in its spool mozzle of the inlet inflow valve core structure part 1-4-1 of uniaxial pressure stop valve 1-4 1-4-1-7, under pressure, the latex flow guide sleeve 1-4-2 that medicinal liquid promotes to cover on spool liquid outlet 1-4-1-8 expands, medicinal liquid enters in expansion mozzle latex flow guiding casing tube 14-2, from flow guiding casing tube liquid outlet 1-4-2-3 mouth, flow out, enter in unidirectional stop valve diversion cavity 1-4-3-4, from stop valve liquid outlet 1-4-3-5, flow out again, enter in lower tube for transfusion 1-5.
In infusion process, when the medicinal liquid in liquid bottle is totally lost, medicinal liquid face in upper tubing declines, medicinal liquid pressure in Murphy's dropper 1-1 is more and more less, when liquid level is down to Murphy's dropper center line, elasticity fluid stopping latex diaphragm 1-2-2 shrinks the upper flow-stop valve sealing inlet 1-2-1-3 of airtight flow-stop valve sealing guide face 1-2-1-5 and flow-stop valve sealing liquid outlet 1-2-1-4, medicinal liquid face in Murphy's dropper no longer declines, this at present the medicinal liquid in tube for transfusion 1-5 under action of gravity, still flow downward, airtight inlet 1-2-1-3 and liquid outlet 1-2-1-4 completely cut off liquid gas passage, make tube for transfusion produce negative pressure, first negative pressure inhales flat by the latex catheter 1-3-3 in threeway longitudinal pipe 1-3-1, the latex catheter before expanding is stained with threeway longitudinal pipe 1-3-1, during contraction, in pipe, produce space, air is flowed into from threeway transverse pipe 1-3-2, if (transverse tube of airtight tee T, produces negative pressure in tee T, if be tightly connected with capillary vessel, the negative pressure in tee T is exported and is used, ) now in tube for transfusion under the combined effect of medicinal liquid gravity and negative pressure, there is pressure balance, medicinal liquid face is static no longer to decline and rises, realizes so-called fluid stopping effect, has effectively avoided medicinal liquid instead to flow and blood back phenomenon, if but now patient body position's change, as sit up, stand or walk about, will break the pressure balance in tube for transfusion 1-5, make medicinal liquid produce anti-stream, there is blood back phenomenon, uniaxial pressure stop valve 1-4 provided by the present invention, the project organization of its valve core structure part 1-4-1 and latex flow guide sleeve 1-4-2, make the medicinal liquid flowing into from pressure stop valve inlet 1-4-1-1, with small pressure, just can make latex flow guide sleeve 1-4-2 open, unimpeded to guarantee that medicinal liquid flows, otherwise, the medicinal liquid flowing into from other direction, its pressure-acting is in the outside of latex flow guide sleeve 1-4-2, pressure is larger, shrinks tighter, airtight tighter, thoroughly stop medicinal liquid to flow, so this invention can make medicinal liquid only to a direction, flow, effectively avoid the generation of various blood back phenomenons.
Most of structural member of the present invention can design injection mold, adopts injection moulding process manufacture.The valve body of bi-directional negative pressure flow-stop valve and Murphy's dropper can be designed to integrated injection molding part, also can be designed to respectively single moulding and be assembled into one, valve body liquid in-out membrana oralis sheet binding face, can be designed to plane, also can be designed to arcwall face, its latex film plate shape can be designed to circular flat, also can be designed as the circular cambered surface identical with valve body binding face, diaphragm thickness and elasticity will meet harmomegathus and seal request, the water conservancy diversion that can expand under medicinal liquid pressure, and medicinal liquid pressure weakens can shrink airtight fluid stopping; The latex mozzle of negative pressure conduction threeway can adopt the softer latex material of quality to make, and in pressure and the less situation of negative pressure, just can put in place by dilation, guarantees negative pressure transmission effect; The water conservancy diversion rubber finger sleeve of uniaxial pressure stop valve coordinates the requirement of data material strict with spool, to avoid ending tight and to affect transfusion effect, also will avoid the thickness of latex flow guide sleeve undesirable simultaneously, affects guide performance, then affects the performance of transfusion device; The spool of uniaxial pressure stop valve adopts cylindrical, also can adopt other shape, and spool face is wanted smooth rule, guarantees airtight cut-off effect.
The present invention constructs novelty, practical, safe and reliable, can effectively alleviate medical worker's labor intensity, saves a large amount of light current sufferers and the work of family members' manpower thereof, has huge Social benefit and economic benefit after popularization; And the present invention does not change the structure of Murphy's dropper and medical personnel's work habit, and manufacturability is strong, low cost of manufacture is easily accepted by transfusion device manufacturer and market.
Claims (5)
1. the two-way positive/negative pressure of single intravenous infusion ends negative pressure conduction device (1), it is characterized in that: positive/negative pressure cut-off negative pressure conduction device (1) and Murphy's dropper hypomere (1-1) Integral design, it is by Murphy's dropper hypomere (1-1), bi-directional negative pressure flow-stop valve (1-2), threeway negative pressure conduction module (1-3), uniaxial pressure stop valve (1-4) forms; Its structural relation is: bi-directional negative pressure flow-stop valve (1-2), be arranged in Murphy's dropper hypomere (1-1), valve body drain pipe (1-2-1-8) on its flow-stop valve body structure part (1-2-1) of bi-directional negative pressure flow-stop valve (1-2), is arranged in the vacuum current-stopping valve construction section (1-1-1-1) in liquid outlet channel under Murphy's dropper (1-1-2); Threeway negative pressure conduction module (1-3) is arranged between the assembly and uniaxial pressure stop valve (1-4) of Murphy's dropper hypomere (1-1) and bi-directional negative pressure flow-stop valve (1-2); Threeway negative pressure conduction module (1-3), the upper binding head (1-3-1-1) of its longitudinal pipe (1-3-1), in threeway module construction section (1-1-1-2) on the lower liquid outlet channel (1-1-2) of embedding Murphy's dropper hypomere (1-1), be enclosed within outside bi-directional negative pressure flow-stop valve drain pipe (1-2-1-8); Threeway assembling outer ring surface (1-4-1-3) on the valve body structure part (1-4-10) of its lower union joint and uniaxial pressure stop valve (1-4) is connected, and is assemblied in its outside; The medicine liquid outlet (1-4-3-5) of uniaxial pressure stop valve (1-4) is connected and communicates with transfusion catheter under transfusion device (1-5).
2. according to the two-way positive/negative pressure cut-off of the disposable intravenous infusion set described in claim one negative pressure conduction device, its vacuum current-stopping valve (1-2), is positioned at Murphy's dropper hypomere (1-1); It is by flow-stop valve body structure part (1-2-1), elasticity fluid stopping latex diaphragm (1-2-2), and flow-stop valve air pressure cover (1-2-3) forms; T shape flow-stop valve body structure part (1-2-1) is by flow-stop valve lead channel (1-2-1-1), flow-stop valve inlet opening (1-2-1-2), flow-stop valve sealing inlet (1-2-1-3), flow-stop valve sealing liquid outlet (1-2-1-40, flow-stop valve sealing guide face (1-2-1-5), fluid stopping film annular seal groove (1-2-1-6), flow-stop valve air pressure cover is installed anchor ring (1-2-1-7), valve body drain pipe (1-2-1-8), latex tubing collar extension limiting stand (1-2-1-9), valve body liquid outlet (1-2-1-10) forms; Flow-stop valve lead channel (1-2-1-1), flow-stop valve inlet opening (1-2-1-2), flow-stop valve sealing inlet (1-2-1-3), flow-stop valve sealing liquid outlet (1-2-1-4), flow-stop valve sealing guide face (1-2-1-5), fluid stopping film annular seal groove (1-2-1-6), flow-stop valve air pressure cover is installed anchor ring (1-2-1-7), be located at T shape flow-stop valve structural member top, outward appearance is on circular solid, a plurality of flow-stop valve lead channel (1-2-1-1) are the radial circular geometry downside periphery that is located at, and are communicated with space in Murphy's dropper; A plurality of flow-stop valve inlet openings (1-2-1-2) in the form of a ring array in circular geometry, up/down perforation, it is suitable for reading for fluid stopping valve seal inlet (1-2-1-3), its end opening and flow-stop valve lead channel (1-2-1-1) corresponding connection one by one; Solid upside disc is fluid stopping valve seal guide face (1-2-1-5), and flow-stop valve sealing inlet (1-2-1-4) distributes on its face in the form of a ring; The center of flow-stop valve sealing guide face (1-2-1-5) is fluid stopping valve seal liquid outlet (1-2-1-4), it is extended for valve body drain pipe (1-2-1-8) downwards liquid outlet, drain pipe termination is valve body liquid outlet (1-2-1-10), drain pipe periphery, approaching liquid outlet place is latex tubing limiting stand (1-2-1-9); Flow-stop valve elasticity fluid stopping latex diaphragm (1-2-2), it is by fluid stopping latex face, and (1-2-2-1), fluid stopping latex film sheet annular edge (1-2-2-2) two parts form; (it is upper that 1-2-2-10 is fitted in weight valve sealing guide face (1-2-1-5) to its fluid stopping latex face in assembly, and its fluid stopping latex film sheet annular edge (1-2-2-2) embeds in fluid stopping film annular seal groove (1-2-1-6); Flow-stop valve air pressure cover (1-2-3) is by air pressure cover assembling inner ring surface (1-2-3-1), fluid stopping zona shape limit limiting stand (1-2-3-2), air pressure cover atmospheric pressure cavity (1-2-3-3) formation; Flow-stop valve air pressure cover (1-2-3), by the air pressure cover assembling inner ring surface (1-2-3-1) on it, flow-stop valve air pressure cover with T-valve structural member (1-2-1) on it is installed anchor ring (1-2-1-7) and is coordinated, air pressure cover fluid stopping film limiting stand (1-2-3-2) is just in time pressed on fluid stopping latex film sheet annular edge (1-2-2-2), on fluid stopping latex diaphragm (1-2-2-2), and between flow-stop valve air pressure cover, form airtight flow-stop valve valve atmospheric pressure cavity.
3. according to the two-way positive/negative pressure fluid stopping of the single intravenous infusion negative pressure conduction device described in claim one, its negative pressure conduction threeway (1-3) is by threeway longitudinal pipe (1-3-10), threeway transverse pipe (1-3-2), latex catheter (1-3-3) forms; Its threeway longitudinal pipe upper binding head (1-3-1-1) is respectively on it: upper binding head latex tubing limiting stand (1-3-1-1-1), upper assembling inner ring surface (1-3-1-1-2), upper assembling outer ring surface (1-3-1-1-3), outer limiting stand (1-3-1-1-4); On it, assembling inner ring surface (1-3-1-1-2), upper assembling outer ring surface (1-3-1-1-3), coordinate installation with vacuum current-stopping valve body drain pipe (1-2-1-8), Murphy's dropper liquid outlet channel threeway module construction section (1-1-1-2) respectively; Threeway longitudinal pipe lower union joint (1-3-1-20), is respectively on it: lower union joint latex tubing limiting stand (1-3-1-2-1), lower assembling inner ring surface (1-3-1-2-2); Latex catheter (1-3-30 its by conduit part (1-3-3-1), collar extension on conduit (1-3-3-2), collar extension under conduit (1-3-3-3) forms; Latex catheter (1-3-3-1) is positioned at threeway longitudinal pipe (1-3-1), latex catheter pressed on ring (1-3-3-2) is arranged on the latex tubing collar extension limiting stand (1-2-1-9) of bi-directional negative pressure flow-stop valve drain pipe on it, and between its upper binding head latex tubing limiting stand (1-3-1-1-1) of threeway longitudinal pipe; Under latex catheter, collar extension is arranged on tee T lower union joint latex tubing limiting stand (1-3-1-2-1), and between the latex mozzle collar extension limiting stand (1-4-1-1) on pressure stop valve valve core structure part; It comprises threeway transverse pipe adnexa photo outer ring surface (1-3-1) its threeway transverse pipe (1-3-2), the threeway mouth of pipe (1-3-2-2), threeway mouth of pipe sealing cap (1-3-2-3).
4. according to the threeway negative pressure conduction module (1-3) of the two-way positive/negative pressure fluid stopping of the disposable intravenous infusion set negative pressure conduction device described in claim one, its transverse pipe (1-3-2) is upper with pressurized seal cap (1-3-4); Pressurized seal cap (1-3-4) outward appearance is column, and one in a tubular form; It comprises installing port (1-3-4-1), seal head (1-3-4-2), sealing-plug (1-3-4-3); Sealing cap installing port (1-3-4-1) is enclosed within on the outside connector of threeway transverse pipe (1-3-2-1), and sealing-plug (1-3-4-3) embeds in its mouth of pipe.
5. according to the two-way positive/negative pressure fluid stopping of the disposable intravenous infusion set negative pressure conduction device described in claim one, its pressure stop valve (1-4) is by valve core structure part (1-4-1), latex flow guiding casing tube (1-4-2), stop valve kuppe (1-4-3) forms; The outward appearance of its valve core structure part (1-4-1), each section of cross section is the unequal positive circular cylindrical shape solid of diameter, be respectively pressure stop valve inlet (1-4-1-1) from top to bottom, latex mozzle collar extension limiting stand (1-4-1-2), outer ring surface (1-4-1-3), mounting limit platform (1-4-1-4) are installed in threeway; Spool mozzle (1-4-1-5), spool liquid outlet (1-4-1-6), spool end socket (1-4-1-7); In assembly (1), in the lower collar extension (1-3-3-1) of the inner latex tubing of the corresponding embedding of its inlet (1-4-1-1) threeway longitudinal pipe, latex mozzle collar extension limiting stand (1-4-1-2) is just in time pressed in collar extension under latex catheter (1-3-3-1); The corresponding installation of lower assembling inner ring surface (1-3-1-2-2) of outer ring surface (1-4-1-3) and threeway longitudinal pipe lower end is installed in its threeway, the anchor ring mouth of lower assembling inner ring surface (1-3-1-2-2) and mounting limit platform pipe (1-4-2), it is by flow guiding casing tube (1-4-2-1) suitable for reading, flow guiding casing tube end opening (1-4-2-2), flow guiding casing tube tube wall (1-4-2-3) forms; Latex flow guide sleeve (1-4-2) is sleeved on spool mozzle (1-4-1-5) above, flow guiding casing tube (1-4-2-2) suitable for reading is fitted with the flow guiding casing tube limiting stand suitable for reading (1-4-1-6) on valve core structure part, spool liquid outlet (1-4-1-8) is just in time pressed in below latex flow guide sleeve, the medicinal liquid flowing out from spool liquid outlet (1-4-1-8), flows out from flow guiding casing tube end opening (1-4-2-2); Stop valve kuppe (1-4-3), it is by kuppe installing port (1-4-3-1), and kuppe is installed inner ring surface (1-4-3-2), the spacing lattice of flow guide sleeve (1-4-3-3), diversion cavity (1-4-3-4), stop valve medicine liquid outlet (1-4-3-5) forms; Stop valve kuppe (1-4-3) is installed outer ring surface (1-4-1-5) by kuppe installing port (1-4-3-1) with the kuppe of valve core structure part and is coordinated, be assembled on valve core structure part, its flow guide sleeve limiting stand (1-4-3-3) just in time keeps off on flow guiding casing tube (1-4-2-1) suitable for reading, its diversion cavity (1-4-3-4) just in time covers on the outside of flow guide sleeve (1-4-2), forms airtight diversion cavity; The lower extension of stop valve kuppe (1-4-3) is stop valve medicine liquid outlet (1-4-3-5), and the medicinal liquid flowing out from flow guiding casing tube end opening (1-4-2-3), flows into airtight diversion cavity, from stop valve medicine liquid outlet (1-4-3-5), flows out.Stop valve liquid outlet (1-4-3-5) is communicated with lower tube for transfusion (1-5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210333229.8A CN103656780A (en) | 2012-09-11 | 2012-09-11 | Novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device |
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| CN201210333229.8A CN103656780A (en) | 2012-09-11 | 2012-09-11 | Novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device |
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| CN103656780A true CN103656780A (en) | 2014-03-26 |
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| CN201210333229.8A Pending CN103656780A (en) | 2012-09-11 | 2012-09-11 | Novel disposable venous transfusion double-direction positive pressure and negative pressure cut-off negative pressure conducting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104399158A (en) * | 2014-11-14 | 2015-03-11 | 贾宇东 | Sensitive blood return blocking-preventing needle system structure with air removing safety function |
| CN106492306A (en) * | 2016-12-28 | 2017-03-15 | 天津哈娜好医材有限公司 | Transfusion device back-flow preventer and its using method |
| CN106668977A (en) * | 2016-12-28 | 2017-05-17 | 天津哈娜好医材有限公司 | Check valve used for infusion apparatus and use method of check valve |
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Application publication date: 20140326 |