CN102686254B - One-way valve with opening function, tube unit provided with the one-way valve, and drug solution injection system - Google Patents
One-way valve with opening function, tube unit provided with the one-way valve, and drug solution injection system Download PDFInfo
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- CN102686254B CN102686254B CN201080055768.9A CN201080055768A CN102686254B CN 102686254 B CN102686254 B CN 102686254B CN 201080055768 A CN201080055768 A CN 201080055768A CN 102686254 B CN102686254 B CN 102686254B
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- check valve
- syringe
- valve body
- liquid
- valve
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
- A61M5/16881—Regulating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1825—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with flexible valve members
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
- A61M2039/2446—Flexible disc
- A61M2039/246—Flexible disc being fixed along all or a part of its periphery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2209/00—Ancillary equipment
- A61M2209/04—Tools for specific apparatus
- A61M2209/045—Tools for specific apparatus for filling, e.g. for filling reservoirs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/007—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for contrast media
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/14546—Front-loading type injectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
Abstract
Disclosed is a one-way valve wherein, although the flow of liquid in only one direction is usually allowed, a flow path can be opened as necessary. Specifically disclosed is a one-way valve (250) which has a casing comprising a valve chamber in which an inlet port (255) and outlet port (261) of liquid are open, a valve body (270) disposed within the valve chamber, and an opening button (265) that is mounted on the casing in a manner so as to allow movement, and is manually operated. The valve body (270) has flexibility, and opens the inlet port (255) when the liquid flows into the valve chamber from the inlet port (255) side, but blocks the inlet port (255) when the liquid flows into the valve chamber from the outlet port (261) side. The opening button (265) is formed integrally with an action unit (266) that deforms the valve body (270) so that the inlet port (255) is opened by being brought into contact with the valve body (270) by the movement.
Description
Technical field
The present invention relates to a kind of one-way valve structures that is suitable for the chemical liquid infusion system that the medicinal liquid that is filled in medical liquid container is injected via flexible pipe.
Background technology
Have CT (Computed Tomography: computer tomography) scanning device, MRI (Magnetic Resonance Imaging: nuclear magnetic resonance) device, PET (Positron Emission Tomography: positron emission tomography) device, angiography (Angio: angiography) device and MRA (MR Angio: magnetic resonance angiography) device etc. as therapeutic medical image diagnosing system.When using these devices to take testee's image, large multidirectional testee injects the medicinal liquid such as contrast agent and normal saline.
Injecting medicinal liquid to testee uses liquid medicine injection apparatus automatically to carry out conventionally.Liquid medicine injection apparatus has: dismounting is provided with the injection head of the syringe that is filled with medicinal liquid freely; Control the injection control unit of the action of injection head.Syringe has syringe and can axially movably insert the piston in syringe along syringe, and medicinal liquid is filled in syringe.Injection head has piston drive mechanism, this piston drive mechanism so that the mode that the piston of the syringe being mounted at least advances with respect to syringe move.
Use in contrast agent and the situation of normal saline as medicinal liquid, mostly use and there is the injection head of two piston drive mechanisms, thereby two syringes can be installed and operate respectively each syringe.In two syringes, fill respectively contrast agent and normal saline, the end side of each syringe links with the branching hose that branches into two.The front end of branching hose is connected with probe, can inject contrast agent and normal saline via this branching hose.
Normal saline is mainly used in: injecting after contrast agent the contrast agent that pushing is injected into; Prevent solidifying of blood in flexible pipe to rinsing in flexible pipe; By inject and dilute contrast agent with contrast agent simultaneously.
In the situation that using this chemical liquid infusion system to inject medicinal liquid, especially because contrast agent viscosity is high, therefore many especially with the situation of high pressure injection medicinal liquid.In the time that the medicinal liquid of a side injects with high pressure, this high pressure is the syringe side transmission to opposite side via branching hose, thus, there is following probability,, the piston of the syringe of opposite side retreats, and is imported into the medicinal liquid in the syringe that is filled in a side in this syringe.
In order to prevent the circulation of the medicinal liquid between this syringe, following liquid medicine injection apparatus is disclosed in patent documentation 1, it has to retreat forbids mechanism, when this retreats and forbids mechanism the piston drive mechanism in forward travel state and opposite side is in halted state at the piston drive mechanism of a side, forbid that the piston drive mechanism of opposite side retreats.As retreating the example of forbidding mechanism, in patent documentation 1, electromagnetic brake is disclosed.
[formerly technical literature]
[patent documentation]
Patent documentation 1: TOHKEMY 2002-102343 communique
But in the time that chemical liquid infusion system is used for MRI device, the parts that are conventionally arranged near the formation of MRI device injection head can not use the parts that contain magnetic of electromagnetic brake and so on.Therefore, as simpler structure, consider, to each end of branching hose, check valve is installed, only allow the front of medicinal liquid from syringe side to branching hose to flow.Thus, the medicinal liquid that prevents other syringes flows in a certain syringe.
But, in liquid medicine injection apparatus, existing in order to confirm whether probe inserts in blood vessel reliably, the piston that makes the syringe of a side retreats and makes the situation of the medicinal liquid adverse current in branching hose.If flow in flexible pipe because this operation makes blood, probe has inserted in blood vessel.But, if check valve is installed at each end of branching hose, cannot makes piston retreat and make the medicinal liquid adverse current in branching hose.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of can be applicable to via branching hose by the medicinal liquid in multiple medical liquid containers respectively or concurrently injected chemical liquid infusion system and liquids in general only can flow but can open as required the check valve of stream and utilize the system of this check valve to single direction.
To achieve these goals, the check valve of the open function of band of the present invention has: housing, and its formation offers the inflow entrance of liquid and the valve chamber of flow export; Valve body, it has flexible and is disposed in valve chamber, when liquid is opened inflow entrance from time in inflow entrance side inflow valve chamber, and because liquid is from choking flow entrance in valve chamber described in flow export side inflow; Control member, it is arranged on movably on described housing and is manually actuated, and this control member has service portion, and this service portion is by mobile and with described valve body butt and make described valve body deformation to open described inflow entrance.
Tube unit of the present invention comprises: the check valve of the open function of band of the invention described above that have the flexible pipe of front end and end, links with the end of flexible pipe.
And then chemical liquid infusion system of the present invention injects the medicinal liquid in medical liquid container via flexible pipe, and has: for the liquid medicine injection apparatus that the medicinal liquid that is filled in medical liquid container is injected; There is the flexible pipe of front end and end; Flow export side is connected with the end of described flexible pipe and the check valve of the open function of the band of the invention described above that inflow entrance side is connected with medical liquid container directly or indirectly.
Invention effect
According to the present invention, the general check valve flowing that check valve only can flow from inflow entrance lateral flow outlet side usually used as liquid play a role, but as required, can control member be operated and open stream by manually coming.Thus, check valve of the present invention especially can be preferred for following chemical liquid infusion system, that is, and and the common chemical liquid infusion system that requires to prevent the adverse current of medicinal liquid but can make as required medicinal liquid adverse current.
The chemical liquid infusion system that injects multiple-medicinal-liquid if this check valve is applicable to use branching hose, in medicinal liquid injection process arbitrarily, can prevent that medicinal liquid from flowing into another end side of branching hose, and can confirm simply by open check valve whether the front of branching hose normally inserts testee.And, can all be formed by nonmagnetic material for parts and the unit of chemical liquid infusion system, thus, chemical liquid infusion system of the present invention and the MRI device that produces high-intensity magnetic field can be used in combination.
Brief description of the drawings
Fig. 1 is the axonometric chart of the penetrating and shooting system of an embodiment of the present invention.
Fig. 2 is the axonometric chart of the liquid medicine injection apparatus shown in Fig. 1.
Fig. 3 is the axonometric chart that the injection head shown in Fig. 2 is illustrated together with the syringe being mounted thereon.
Fig. 4 is the axonometric chart of the check valve of the open function of the band shown in Fig. 3.
Fig. 5 is the longitudinal section of the flow direction along liquid of the check valve shown in Fig. 4.
Fig. 6 is the figure of the cyclic rib of the check valve shown in presentation graphs 4 and the configuration of multiple outer ribs.
Fig. 7 is the figure obtaining from the lid member of a part for the unidirectional valve housing shown in valve chamber side observation pie graph 4.
Fig. 8 is with Fig. 5 same cutaway view of liquid while importing from inflow pipe side.
Fig. 9 is the cutaway view same with Fig. 5 under the state that is pressed of open button.
Figure 10 is the axonometric chart of other examples of the check valve of the open function of band.
Detailed description of the invention
Secondly, with reference to accompanying drawing, embodiments of the present invention are described.
Known with reference to Fig. 1, show and there is the penetrating and shooting system 1000 that an embodiment of the present invention of liquid medicine injection apparatus 100 and fluoroscopic 300 relates to.Fluoroscopic 300 interconnects with the mode that liquid medicine injection apparatus 100 can be synchronizeed with both actions.Fluoroscopic 300 can be the filming apparatus arbitrarily such as X ray CT device, MRI device, PET device, angiography or MRA device.
Fluoroscopic 300 has: carry out the scanning device 301 of taking action; The shooting control unit 302 that the action of scanning device 301 is controlled.In Fig. 1, though whole structural element of penetrating and shooting system 1000 is configured in same indoor and illustrate, but in fact when testee's image is taken, take control unit 302 and be configured in different from scanning device 301 and liquid medicine injection apparatus 100 indoor.
For example, as shown in Figure 2, liquid medicine injection apparatus 100 has: the injection head 110 of installing via arm 112 on the top of support 111; The injection control unit 101 being connected with injection head 110 by cable 102.Injecting control unit 101 has: main operation panel 103; Double as the touch panel 104 for indication mechanism and input mechanism; And be handle unit 107 etc. by cable 108 with the complementary input mechanism that the main body of injecting control unit 101 is connected.
As shown in Figure 3, injection head 110 has two recesses 114 that form as syringe maintaining part at the upper surface of head main body 113, can dismantle respectively at these recesses 114 the syringe 200C, the 200P that are provided with as medical liquid container.Syringe 200C, 200P have syringe 210 and piston 220.Fill medicinal liquid to syringe 200C, 200P respectively in advance, for example, can fill contrast agent to the syringe 200C of a side, fill normal saline to the syringe 200P of opposite side.
On injection head 110, be provided with accordingly two piston drive mechanisms 130 with each recess 114, these two piston drive mechanisms 130 drive independently of each other, and the piston 220 of the syringe 200C, the 200P that are installed on recess 114 is moved.These piston drive mechanisms 130 operate by the piston 220 of syringe 200C, 200P to being installed on respectively recess 114, thereby can will be filled in contrast agent and the normal saline difference of syringe 200C, 200P or inject to testee simultaneously.
For in injection head 110 for syringe 200C, 200P being held in to mechanism and the piston drive mechanism 130 of head main body 113, can adopt the well known organization that is generally used for this injection device.
For the contrast agent and the normal saline that are filled in each syringe 200C, 200P being injected to testee, branching hose unit and syringe 200C, 200P link.Branching hose unit has: front end is connected with for example probe (not shown) and end side branches into the branching hose 230 of two in order to be connected with each syringe 200C, 200P; With allow that medicinal liquid flows from syringe 200C, 200P side direction probe side towards the check valve 240,250 being connected with each end of branching hose 230.Thereby the end by branching hose 230 connects check valve 240,250, thereby branching hose 230 linked with syringe 200C, 200P by check valve 240,250 and syringe 200C, being connected of 200P.
These syringes 200C, 200P and branching hose unit combination are called to chemical liquid infusion system in the present invention to the system of liquid medicine injection apparatus 100.Syringe 200C, 200P can be at the on-the-spot syringe of filling Liquid medicine type of medical treatment, can be also manufacture manufacturer is provided to the on-the-spot type that is pre-charged with of medical treatment syringes with the state of populated medicinal liquid.In addition, syringe 200C, 200P, branching hose 230 and check valve 240,250 can provide respectively; Or branching hose 230 and check valve 240,250 are combined and provided as branching hose unit; Or syringe 200C, the 200P, branching hose 230 and check valve 240,250 combinations that are pre-charged with type are provided as injector instrument bag; Or combination in any provides.Using 240,250 combinations of branching hose 230 and check valve as branching hose unit provides in the situation that, branching hose 230 and check valve 240,250 can connect in advance, also can not connect.Equally, also can connect syringe 200C, 200P, branching hose 230 and check valve 240,250 at injector instrument bag in advance, also can not connect.
At this, importantly, the check valve 240 being connected with the syringe 200C of contrast agent is for only allowing the common check valve of liquid from the end side forward end side flow of branching hose 230, with respect to this, the check valve 250 being connected with the syringe 200P of normal saline is opened the check valve of function to the band of the mobile open state of two directions for can switch to a liquid state to one way flow and liquid by the operation of regulation.Below, this on limits check valve 250 is elaborated.
As shown in Figure 4, check valve 250 has: the housing 251 that forms the general cylindrical shape shape of valve chamber; The inflow pipe 253 extending from one end of housing 251; The effuser 259 extending from the other end of housing 251; Be located at the open button 265 on housing 251.Inflow pipe 253 links with the front end of syringe 200P (with reference to Fig. 3), and effuser 259 links with the end of branching hose 230 (with reference to Fig. 3).These links are preferably the connecting structure of screw socket (Luer lock) formula, form respectively the external screw thread of screw type at the front end of inflow pipe 253 and effuser 259.In addition, as shown in figure 10, the one or more blade part 259a and the effuser 259 that extend to radial direction outside from the outer peripheral face of effuser 259 are integrally formed, in the time that check valve 250 is connected with syringe, if can catch on this blade part 259a and with respect to syringe rotary check valve 250 with finger, can easily carry out being connected of check valve 250 and syringe.In Figure 10, show blade part 259a and be formed on the example on effuser 259, but also can on inflow pipe 253, form blade part (not shown).
As shown in Figure 5, housing 251 has: the housing body 252 that is formed with inflow pipe 253; Form effuser 259 and with the liquid-tight lid member 258 engaging of housing body 252.By in liquid-tight mode, this housing body 252 being engaged with lid member 258, thus 261 the mutual opposed valve chambers of flow export that form the inflow entrance 255 being communicated with inflow pipe 253 and be communicated with effuser 259 in the inside of housing 251.
In valve chamber, in housing body 252, cyclic rib 254 forms in the mode of the surrounding of encirclement inflow entrance 255, and then, be formed with multiple outer ribs 256 in its radial direction outside.Outer ribs 256 is than cyclic rib 254 height, and as shown in Figure 6, outer ribs 256 is configured to radial around cyclic rib 254.
In valve chamber, dispose and have flexible and be formed as discoid valve body 270.The diameter of valve body 270 is larger than the external diameter of cyclic rib 254, and an interarea of valve body 270 is bearing on the front end face of cyclic rib 254., cyclic rib 254 is brought into play the effect as valve seat.And then the diameter of valve body 270 is less than the diameter in space of inner side that is formed at multiple outer ribs 256, by described multiple outer ribs 256, valve body 270 cannot substantially be moved along radial direction.
In addition, lid member 258 on, valve body pressing piece 260 in valve chamber with the opposed formation of valve body 270.As shown in Figure 5 and 7, valve body pressing piece 260 has taking base the structure that mode that cross section cross-sectional flow export 261 is intersected in the length direction central authorities on base mutually as two ribs of isosceles triangle shape combines.The summit of valve body pressing piece 260 is positioned at the substantial middle place of the radial direction of valve body 270, contact with valve body 270 or slightly vacate with gap and leave with valve body 270, by this valve body pressing piece 260, the central part that is supported on the valve body 270 on cyclic rib 254 is retained described valve body 270 and cannot moves along the medicinal liquid flow direction between inflow entrance 255 and flow export 261 is substantive.
By the structure in valve chamber as above, when medicinal liquid is during from the interior inflow of inflow pipe 253 side direction check valve 250, the pressure of the medicinal liquid of inflow puts on valve body 270.Now, as mentioned above, because the central part of valve body 270 is kept by valve body pressing piece 260, so as shown in Figure 8, the peripheral part of valve body 270 is out of shape to effuser 259 sides under the pressure-acting of medicinal liquid.Thus, inflow entrance 255 is communicated with valve chamber, and medicinal liquid can be by valve chamber to effuser 259 side flow.
Otherwise when medicinal liquid is during from effuser 259 side inflow, under this pressure-acting, as shown in Figure 5, valve body 270 is subject to cyclic rib 254 and presses, thus choking flow entrance 255.Thereby, prevent that medicinal liquid is from effuser 259 side direction inflow pipe 253 side flow.
But, in the chemical liquid infusion system of the manner, there is the situation of medicinal liquid from effuser 259 side direction inflow pipe 253 side flow.In order to realize above-mentioned situation, check valve 250 has can manually operated open button 265.
As shown in Figure 4, open button 265 is installed on the side face of housing 251, carries out manual operation by operator from the outside of housing 251.
And then with reference to Fig. 5, open button 265 can be arranged in housing body 252 movably along the radial direction of valve body 270, by helical spring 268 by radial direction outside (away from the direction of the valve body 270) application of force to housing body 252.In open button 265, be formed with the service portion 266 by open button 265 is pressed to the valve body 270 acting in valve chamber to the radial direction inner side of housing body 252.Service portion 266 is the shaft-like part of extending along the moving direction of open button 265 towards valve chamber, and leading section enters in valve chamber via the through hole 257 of the side face that is formed at housing body 252.In order to ensure the liquid-tight property in the gap between through hole 257 and service portion 266, mounting O-shaped sealing ring 267 on the outer peripheral face of service portion 266.
Open button 265 and housing body 252 have the suitable position limiting structure that the moving range of open button 265 is limited in to prescribed limit, limit the housing body 252 of open button 265 along the moving range of radial direction by this position limiting structure.The moving range of open button 265 is the scope between primary importance and the second position, described primary importance is the position (with reference to Fig. 5) that service portion 267 leaves from the outer circumference end of valve body 270, and the second position is so that the mode that the peripheral part of valve body 270 is deformed to valve body 270 peripheral part along the thickness direction of valve body 270 floats this degree from cyclic rib 254 makes the position (with reference to Fig. 9) of service portion 266 and the peripheral part butt of valve body 270.In the time overcoming the active force of helical spring 268 and press open button 265, open button 265 is positioned at the second position, but open button 265 is while leaving, and open button 265 is returned to primary importance under the active force of helical spring 268., open button 265 is only positioned at the second position during being pressed.
According to the structure of open button 265 as above, as shown in Figure 9, when pressing open button 265 while making open button 265 be positioned at the second position, the peripheral part butt of service portion 266 and valve body 270, so that the mode that valve body 270 leaves from a part for cyclic rib 254 makes valve body 270 to its thickness direction distortion.Thus, inflow entrance 255 is communicated with valve chamber.When medicinal liquid under this state is during from flow export 259 side inflow valve chamber, the pressure of the medicinal liquid of inflow is so that valve body 270 is pressed the mode effect of cyclic rib 254, and valve body 270 maintains the state that peripheral part is floated from cyclic rib 254 under the effect of service portion 266.Consequently, the medicinal liquid of inflow valve chamber can flow to inflow pipe 253 by inflow entrance 255.In the time that open button 265 is decontroled, under the active force effect of helical spring 268, open button 265 is positioned at primary importance, service portion 266 leaves from valve body 270, valve body 270 illustrates above-mentioned performance according to the direction of the pressure-acting of medicinal liquid, therefore, medicinal liquid is not from effuser 259 side direction inflow pipe 253 side flow.
Thereby, according to the check valve 250 of the manner, only can play a role from the general check valve of inflow pipe 253 side direction effuser 259 side flow usually used as medicinal liquid, but can just can open the stream between inflow pipe 253 and effuser 259 by only pressing the so extremely shirtsleeve operation of open button 265 as required.In addition, valve body 270 keeps central part by valve body pressing piece 260, thus can make open button 265 operation realize valve body 270 stabilization and reliably carry out.And open check valve 250 only, during pressing open button 265, therefore, can prevent from becoming open state because operate miss etc. makes check valve 250 in inessential situation.
In order to make service portion 267 more reliable to the effect of valve body 270, in the manner, the part in the flow direction downstream of the medicinal liquid in the valve chamber of effuser 259 sides from inflow pipe 253 sides of the leading section of service portion 267 is tilted to be sheared and becomes wedge shape.By making the leading section of service portion 267 become this shape, the process moving to the second position from primary importance in open button 265, after service portion 267 contacts with valve body 270, move to valve body on the inclined plane being sheared of service portion 267, thereby make the peripheral part of valve body 270 lift and open inflow entrance 255 from cyclic rib 254.Consequently, valve body 270 can be followed the movement of open button 265 and be out of shape swimmingly.And then, being positioned in open button 265 under the state of the second position, the part that valve body 270 is out of shape is applied the inclined plane supporting of portion 267, therefore can maintain reliably the open state of check valve 250.
In addition, be that the summit of the service portion 267 that forms of wedge shape is positioned near cyclic rib 254 and contact surface valve body 270 by making cross section.Thus, the leading section of service portion 267 easily enters between valve body 270 and cyclic rib 254, therefore can make swimmingly valve body 270 start distortion.
Secondly the step, being installed on after injection head 110 since two syringe 200C, 200P illustrates an example of carrying out the injection order of medicinal liquid by the chemical liquid infusion system of the manner.
Be installed on the stage of injection head 110 at syringe 200C, 200P, branching hose 230 is connected with the front end of syringe 200C, 200P.Each end of the branch of branching hose 230 has two check valves 240,250 to allow liquid from its end side forward end side flow, and syringe 200C, 200P are connected with branching hose 230 via check valve 240,250.In addition, the syringe 200C and the check valve 240 that are filled with contrast agent link, and the syringe 200P and the check valve 250 that are filled with normal saline link.Syringe 200C, 200P are installed on after injection head 110, and operator suitably drives each piston drive mechanism 130 and fills up in branching hose 230 with contrast agent and normal saline, thereby carries out the aerofluxus of branching hose 230.
After branching hose 230 aerofluxuss, operator inserts the probe linking with the front end of branching hose 230 in testee's blood vessel.Secondly, operator confirms whether probe has inserted in testee's blood vessel.This confirmation is carried out in the following way, that is, the piston drive mechanism 130 that the syringe 200P that check valve 250 is linked is operated moves and this piston 220 is retreated, thereby makes liquid flow in branching hose 230 and carry out from probe.
Before the piston 220 that makes syringe 200P retreats, the open button 265 of operator presses check valve 250.During pressing open button 265, liquid can, from branching hose 230 side direction syringe 200P side shiftings, therefore, pressed under the state of open button 265, and operator moves piston drive mechanism 130 and the piston 220 of syringe 200P is retreated.
As long as to retreat by the piston 220 of syringe 200P the liquid flowing in branching hose 230 be blood, be judged as in the blood vessel that probe normally inserts testee.In addition in the situation that, mean that probe is not normally inserted in testee's blood vessel, therefore, operator piston drive mechanism 130 is stopped and hands from the open button 265 of check valve 250 is left, reinsert probe and repeat above-mentioned confirmation step until probe inserts in testee's blood vessel.
Confirm probe normally insert testee's blood vessel in after, operator stops piston drive mechanism 130 and hands leaves from the open button 26 of check valve 250.
Secondly, operator sets the injection condition of medicinal liquid according to testee's inspection object etc.The setting of injection condition can be carried out with main operation panel 103, touch panel 104 etc.In the time that after injection condition is set, operator carries out the predetermined operation for injecting beginning, inject control unit 101 according to the action of the injection condition control piston driving mechanism 130 being set, thus medicinal liquid is injected to testee.
In the injection of medicinal liquid, conventionally for making contrast agent, the injection rate of the contrast agent with few arrives desired area, injecting saline injection after contrast agent, push contrast agent by normal saline.In addition, also use normal saline in order to rinse branching hose 230.
In any situation, during only injecting contrast agent, the pressure that the injection of contrast agent produces not only acts on the front of branching hose 230, also acts on the end of the side that check valve 250 connects.But in the injection process of contrast agent, the open button 265 of check valve 250 is not pressed, under this state, liquid cannot be from branching hose 230 side direction syringe 20P side flow.Thus, in contrast agent injection process, can prevent that part that contrast agent flows into branching hose 230 branches is to being connected with between the end of a side of check valve 250.Consequently, the contrast agent of aequum is injected testee reliably, therefore can utilize well fluoroscopic 300 to carry out the shooting of testee's fluoroscopy images.In addition, as mentioned above, by preventing that contrast agent from flowing into the end portion of normal saline side, can prevent the consumption of insignificant contrast agent.
Equally, during saline injection only, the pressure-acting that the injection of normal saline produces is in the end portion of the contrast agent side of branching hose 230.But, because the end of syringe 200C and branching hose 230 is connected via check valve 240, therefore,, in saline injection process, can prevent that the part of branch that normal saline is injected into branching hose 230 is to being connected with between the end of check valve 240 1 sides.
As described above, according to the chemical liquid infusion system of the manner, being configured to two syringe 200C, 200P is connected with branching hose 230 via check valve 240,250 respectively, in a side medicinal liquid injection process, can prevent that medicinal liquid from flowing into the opposing party's of branching hose 230 end side, meanwhile, also can make check valve 250 open and confirm simply whether probe normally inserts in testee's blood vessel.
And, due to only during pressing open button 265 check valve 250 be open state, therefore, can prevent that check valve 250 keeps open state constant after above-mentioned confirmation.And then the operation of open button 265 does not need Electromagnetic Control by manually carrying out, and therefore, all can be made up of nonmagnetic material for parts and the unit of chemical liquid infusion system.Its result, even if the chemical liquid infusion system of the manner uses any problem that also can not produce together with producing the MRI device of high-intensity magnetic field.
In addition, the check valve 250 of the manner is configured to following mode,, keeps the central part of valve body 270 by valve body pressing piece 260 that is, utilizes the distortion of the peripheral part of valve body 270 to open stream, and therefore, inflow entrance 255 only has part of opening.But when check valve 250 is used for to chemical liquid infusion system according to aforesaid purposes, making stream opening is that object does not lie in liquid filling in syringe 200P for whether Visual Confirmation blood is to the interior adverse current of branching hose 230.Thereby, in check valve 250, make the amount of liquid countercurrent seldom, only a part of opening of inflow entrance 255 is enough to.In other words, by the check valve of the manner 250 being located between the syringe and branching hose of chemical liquid infusion system, can realize required object with extremely simple structure, the check valve 250 of the manner is particularly suitable for chemical liquid infusion system.
In above-mentioned mode, show the example of band being opened to the check valve 250 of function and having filled the syringe 200P link of normal saline.But, also the syringe 200C that has filled contrast agent can be linked with the check valve 250 of the open function of band, syringe 200P and the common check valve 240 of having filled normal saline are linked.In this case, whether normally insert and be confirmed to be that piston 220 by making the syringe 200C that is filled with contrast agent retreats to carry out in testee's blood vessel for probe.And then, can make the check valve 250 with open function link with two sides' of branching hose 230 end.
Conventionally, contrast agent is sold mainly with the state being pre-charged with in syringe.The syringe that is pre-charged with contrast agent and sell is different and different according to manufacturer.Therefore,, for injection head, in order to be applicable to various syringes, be configured to being filled with the piston drive mechanism that the piston of syringe of contrast agent operates the structure that is not to control the end of piston and only press.In this injection head, can not make the piston of the syringe of having filled contrast agent retreat, therefore, same with aforesaid embodiment, will fill the syringe of normal saline link with the check valve of the open function of band, whether normally insert for probe and be confirmed to be that piston by making the syringe that is filled with normal saline retreats to carry out in testee's blood vessel.
In addition, in aforesaid way, show the example of the chemical liquid infusion system with the injection head that two syringes can be installed, but the quantity that the syringe of injection head can be installed can be one, can be also more than three.Be more than three injection heads in the quantity that uses the syringe that can install, branching hose end in advance branch can be arranged on the quantity of the syringe on injection head, the end of therein at least one links the check valve of the open function of above-mentioned band, links common check valve at remaining end.When use can mounting of syringe quantity only when the injection head of, the flexible pipe being connected with syringe uses the not common flexible pipe of branch of end, links the check valve of above-mentioned band opening function at the end of this flexible pipe.
It should be noted that, be the injection head of and only inject a kind of medicinal liquid to testee in the quantity that uses the syringe that can install, also can in syringe, not flow into the medicinal liquid in other syringes even without check valve.But, in this case, also can between syringe and flexible pipe, open the check valve of function conventionally only to allow the mode sandwiched of medicinal liquid from syringe side to flexible pipe side flow that above-mentioned band is installed, thereby prevent from because unfavorable condition any in medicinal liquid injection process causes piston to retreat, testee's blood being flowed in syringe, and, before injection medicinal liquid, the open check valve of state being connected with the front end of flexible pipe with medical liquid container attracts medicinal liquid from medical liquid container in syringe.
In addition, in aforesaid way, as medicinal liquid, exemplified with contrast agent and normal saline, the present invention, except these liquid, can also be applicable to inject the system of the various medicinal liquids such as nutrient and biocide.
For liquid medicine injection apparatus, in aforesaid way, illustrate that the piston-advance by making the syringe of having filled medicinal liquid injects the liquid medicine injection apparatus of the medicinal liquid in syringe, still, in the present invention, can use liquid medicine injection apparatus arbitrarily.As the example of the liquid medicine injection apparatus of other kinds, exemplify out by built-in flexible pipe from the throughput direction upstream side of medicinal liquid downstream side push successively and carry the liquid medicine injection apparatus of the peristaltic pump formula of medicinal liquid.
In the situation that using peristaltic pump, medicinal liquid is filled in the medical liquid containers such as packaging bag, is connected with flexible pipe pump intake by linking flexible pipe.In addition, be connected the hose end of use and the flow export side of the check valve of the open function of the band described in detail connects with testee, the inlet side of this check valve is connected with the ejiction opening of peristaltic pump.Or, between check valve and ejiction opening, can also be connected other flexible pipe.In any situation, the inflow entrance side of the check valve of the open function of band is connected with medical liquid container indirectly via peristaltic pump.Be configured to have multiple suction inlets and ejiction opening and can inject multiple-medicinal-liquid in the situation that at peristaltic pump, branching hose is connected with ejiction opening.Certainly, at least one in each end of branching hose is connected with the check valve of the open function of above-mentioned band, and remaining end is connected with common check valve.
In addition, in aforesaid way, although control the check valve that uses the open function of band of the present invention as object taking the flow direction of the stream between medical liquid container side and testee's side to medicinal liquid, but the check valve of the open function of band also can be disposed in the circulation of the changeable liquid in chemical liquid infusion system and any stream of blocking-up, for making only the flowing for unidirectional or by the mobile blocking-up of liquid of liquid in this stream.
For example, in chemical liquid infusion system, exist and use by the pressure in the flexible pipe being connected with testee's blood vessel being measured to the situation that uses the blood pressure determination device that testee's blood pressure is measured.The flexible pipe that this blood pressure determination device is used via blood pressure determination and be independent of liquid medicine injection lambda line and be connected with the flexible pipe that is connected in testee.The flexible pipe that testee's blood pressure is used via blood pressure determination acts on blood pressure determination device, thereby can measure testee's blood pressure.
But, in the time keeping blood pressure determination device and be connected in testee's the state of soft pipe connection, in the injection process of medicinal liquid, the injection pressure that has a medicinal liquid injecting with higher high pressure acts on blood pressure determination device and causes the situation of blood pressure determination device breakage, therefore, in the injection process of medicinal liquid, needing to block the flexible pipe that medicinal liquid uses from blood pressure determination flows to blood pressure determination device.Therefore, the check valve of the open function of above-mentioned band is folded in the flexible pipe that is connected with testee and blood pressure determination with between flexible pipe, between the centre of the flexible pipe used of blood pressure determination or flexible pipe and blood pressure determination device that blood pressure determination is used, thus the common flexible pipe side flow that only allows medicinal liquid to be connected with testee from blood pressure determination device side direction.Thus, in medicinal liquid injection process, can prevent that the pressure-acting of medicinal liquid is in blood pressure determination device, can in medicinal liquid injection process, in addition check valve be opened and mensuration testee's blood pressure simultaneously.
Self-evidently, the check valve of the open function of band of the present invention is not limited to chemical liquid infusion system, in the various Apparatus and systems that flow of following liquid, can be used according to liquid is only opened in any purposes of stream to the needs of one way flow conventionally.
[symbol description]
100 liquid medicine injection apparatus
110 injection heads
130 piston drive mechanisms
200C, 200P syringe
210 syringes
220 pistons
230 branching hoses
240 check valves
250 (the open function of band) check valve
251 housings
252 housing body
253 inflow pipes
254 cyclic ribs
255 inflow entrances
256 outer ribs
258 lid members
259 effusers
260 valve body pressing pieces
261 flow exports
265 open button
266 service portions
268 helical springs
270 valve bodies
300 fluoroscopics
1000 penetrating and shooting systems
Claims (11)
1. the check valve with open function, it has:
Housing, its formation offers the inflow entrance of liquid and the valve chamber of flow export;
Discoid valve body, it has flexible and is disposed in described valve chamber, when liquid is opened described inflow entrance from time in valve chamber described in described inflow entrance side inflow, and because liquid is from inaccessible described inflow entrance in valve chamber described in described flow export side inflow;
Open button, it can be arranged on described housing movably along the radial direction of described valve body, and this open button has service portion, and this service portion is by mobile and with described valve body butt and make described valve body deformation to open described inflow entrance,
Described service portion is following shaft-like part: moving direction extension and front end along described open button are formed as wedge shape, by operating described open button, the front end of described wedge shape enters between described valve body and valve seat from the radial direction outside of described valve body, opens the mode of described inflow entrance move to lift the peripheral part of described valve body.
2. the check valve of the open function of band according to claim 1, is characterized in that,
Also have in described valve chamber and the valve body pressing piece of described valve body arranged opposite, this valve body pressing piece is held in described valve body by the central part of described valve body and cannot substantially moves to the flow direction of the liquid between described inflow entrance and described flow export.
3. the check valve of the open function of band according to claim 1, is characterized in that,
Described service portion enters described valve chamber via the through hole that is formed at described housing.
4. the check valve of the open function of band according to claim 1, is characterized in that,
Described open button is the button being integrally formed with described service portion, by force application component to this open button to the direction application of force of leaving described valve body, thereby service portion and described valve body butt described in only in the time that this button is pressed.
5. the check valve of the open function of band according to claim 1, is characterized in that,
Described check valve is applicable to the chemical liquid infusion system that the medicinal liquid being filled in medical liquid container is injected via flexible pipe,
Described check valve also has the effuser of being located at the inflow pipe being communicated with described inflow entrance on described housing and being communicated with described flow export,
Described inflow pipe is connected with described medical liquid container directly or indirectly, and the end of described effuser and described flexible pipe links.
6. the check valve of the open function of band according to claim 5, is characterized in that,
Described medical liquid container is syringe, and described inflow pipe is connected with the front end of described syringe.
7. a tube unit, it comprises:
There is the flexible pipe of front end and end;
The check valve of the open function of band claimed in claim 1 linking with the end of described flexible pipe.
8. tube unit according to claim 7, is characterized in that,
Described flexible pipe is that end side branches into multiple branching hoses,
At least one of the open check valve of function of described band and the end of described branching hose links, and the remaining end of described branching hose links from the check valve of the end side forward end side flow of described branching hose with only allowing liquid.
9. a chemical liquid infusion system, it injects the medicinal liquid in medical liquid container and have via flexible pipe:
For the liquid medicine injection apparatus that the medicinal liquid that is filled in medical liquid container is injected;
There is the flexible pipe of front end and end;
Flow export side is connected with the end of described flexible pipe and the check valve of the open function of band claimed in claim 1 that inflow entrance side is connected with described medical liquid container directly or indirectly.
10. chemical liquid infusion system according to claim 9, is characterized in that,
Described medical liquid container is syringe,
Described liquid medicine injection apparatus has injection head, and this injection head has piston drive mechanism, and described piston drive mechanism removably carries described syringe and drives in order to make the piston action of described syringe,
The inflow entrance side of the check valve of the open function of described band is connected with described syringe.
11. chemical liquid infusion systems according to claim 9, is characterized in that,
Described liquid medicine injection apparatus has injection head,
Described injection head has multiple piston drive mechanisms, and the plurality of piston drive mechanism removably carries as multiple syringes of described medical liquid container and in order to make the piston action of each described syringe and drive,
Described flexible pipe is that end side branches into multiple branching hoses in order to be connected with each described syringe,
At least one of the open check valve of function of described band and the end of described branching hose links,
The remaining end of described branching hose links from the check valve of the end side forward end side flow of described branching hose with only allowing liquid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009256365 | 2009-11-09 | ||
| JP2009-256365 | 2009-11-09 | ||
| PCT/JP2010/069711 WO2011055790A1 (en) | 2009-11-09 | 2010-11-05 | One-way valve with opening function, tube unit provided with the one-way valve, and drug solution injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102686254A CN102686254A (en) | 2012-09-19 |
| CN102686254B true CN102686254B (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080055768.9A Expired - Fee Related CN102686254B (en) | 2009-11-09 | 2010-11-05 | One-way valve with opening function, tube unit provided with the one-way valve, and drug solution injection system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5800713B2 (en) |
| CN (1) | CN102686254B (en) |
| WO (1) | WO2011055790A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5936825B2 (en) * | 2011-06-15 | 2016-06-22 | 株式会社根本杏林堂 | One-way valve with opening function |
| WO2013008929A1 (en) * | 2011-07-14 | 2013-01-17 | 株式会社根本杏林堂 | Fluid circuit kit for medical use and fluid circuit system using same |
| CN105079915B (en) * | 2014-05-13 | 2020-08-04 | 弘人工业股份有限公司 | Infusion auxiliary pushing device |
| JP6757401B2 (en) | 2016-03-22 | 2020-09-16 | テルモ株式会社 | Medical connector, infusion set and fluid collection method |
| JP7387158B2 (en) | 2017-12-08 | 2023-11-28 | 株式会社根本杏林堂 | Chemical injection device |
| US10837565B2 (en) | 2018-11-29 | 2020-11-17 | Carefusion 303, Inc. | Check valve with integrated filter |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819814U (en) * | 1981-03-19 | 1983-02-07 | 東和工業株式会社 | Weather strip for automobile windows |
| JPS59125664U (en) * | 1983-02-14 | 1984-08-24 | 日産自動車株式会社 | Check valve structure |
| JPS6051369U (en) * | 1983-09-16 | 1985-04-11 | ヤンマ−産業株式会社 | Release device for backflow prevention valve for faucets |
| US4683916A (en) * | 1986-09-25 | 1987-08-04 | Burron Medical Inc. | Normally closed automatic reflux valve |
| JPH0171281U (en) * | 1987-10-30 | 1989-05-12 | ||
| US5613515A (en) * | 1995-05-16 | 1997-03-25 | Huang; Tien-Tsai | Apparatus for connecting an inflatable article to a compressor |
| JPH11159641A (en) * | 1997-11-26 | 1999-06-15 | Miura Co Ltd | Constant flow valve having check mechanism |
| JP2004065736A (en) * | 2002-08-08 | 2004-03-04 | Nemoto Kyorindo:Kk | Liquid medicine injection apparatus |
| CN103143079B (en) * | 2004-03-03 | 2016-09-28 | 株式会社根本杏林堂 | Chemical liquid infusion system |
| EP1970608B1 (en) * | 2007-03-10 | 2009-09-23 | Festo AG & Co. KG | Choke valve |
-
2010
- 2010-11-05 WO PCT/JP2010/069711 patent/WO2011055790A1/en active Application Filing
- 2010-11-05 JP JP2011539401A patent/JP5800713B2/en active Active
- 2010-11-05 CN CN201080055768.9A patent/CN102686254B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102686254A (en) | 2012-09-19 |
| JPWO2011055790A1 (en) | 2013-03-28 |
| WO2011055790A1 (en) | 2011-05-12 |
| JP5800713B2 (en) | 2015-10-28 |
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