CN204910337U - A fluid infusion device for being directed at patient doses - Google Patents

Abstract

The utility model provides a fluid infusion device for being directed at patient doses, this fluid infusion device can include: the reservoir for storage infusion fluid, the plunger, be located the reservoir inside and with the infusion fluid is injectd together to the reservoir, and this plunger configures into can follow the reservoir motion, the injection button with plunger operability ground simultaneous movement, configures into and to be operated, displacement limiting mechanism sets up with the reservoir is parallel, configures into and is removed the predetermined distance at the injection button by operation time limit fixed column stopper in the reservoir to fluid transport with predetermined quantity in the reservoir. Above -mentioned device is implemented, the whole size of device can be enough reduced, the process that sets up that again can the volume of simplifying the infusion, convenience of customers uses.

Description

For carrying out the fluid infusion apparatus of administration to patient

Technical field

This utility model relates to field of fluid, in particular to a kind of fluid infusion apparatus for carrying out administration to patient that can realize bolus quantities injection.

Background technology

The metabolic disease of diabetes to be a kind of with hyperglycemia be feature.Hyperglycemia be generally due to defect of insulin secretion or its biological agent impaired, or both comprehensive functions cause.In diabetics body, long-standing hyperglycemia can cause chronic lesion, the dysfunction of multiple organ (such as, eye, kidney, heart, blood vessel, nervous system etc.).

Diabetes clinical diagnosis can be divided into type 1 diabetes and type 2 diabetes mellitus.Type 1 diabetes, also referred to as insulin dependent diabetes mellitus (IDDM), patient condition appears at child or adolescence usually, is a kind of disease by congenital Inheritance.Type 1 diabetes belongs to a kind of autoimmune disease, and the immune system of health makes attack to the β cell producing insulin in body, finally causes cannot producing insulin in body.The islets of langerhans of this kind of needs of patients injection of exogenous blood sugar level usually in control volume.Type 1 diabetes patient generally needs 24 hours carrying electronic formula insulin pump in treatments, such as, and Medtronic Minimed series insulin pump.Type 2 diabetes mellitus, also claims non-insulin-dependent diabetes mellitus, and general patient is adult, particularly obese people, and its disease can cause becoming thin.The possible cause of disease comprises: insulin resistant, makes health effectively can not use insulin; The minimizing of insulin secretion, cannot meet needed for health.Early stage type 2 diabetes mellitus patient can be controlled by the mode of making the life better (such as, health diet, moderate exercise, safe fat-reducing, give up smoking and avoid second hand smoking etc.), even cures diabetes.Most of type 2 diabetes mellitus patient helps to control health blood sugar level or control blood sugar level by interim insulin injection by oral antidiabetic drug.Current Most patients adopts novopen injector to inject insulin.Novopen has the structure of similar pen, comprise a body, penholder and cap three part, before insulin injection, need supporting insulin pen-cartridge to be installed in penholder, then rotate and regulate button, injection volume is controlled by the mobile of screw rod, then press injection button, complete injection by screw drive pen core, that is, existing novopen needs the amount of movement of each manual adjustments screw rod to control infusion amount, and setting up procedure is comparatively complicated.And, by arranging screw rod in novopen, adding the entire length of device, being unfavorable for the portable use of device.

Summary of the invention

For solving above-mentioned technical problem, this utility model provides the fluid infusion apparatus for carrying out administration to patient, can arrange infusion quantity simply, quickly, and can the overall dimensions of reduction device.

According to the first aspect of this utility model embodiment, provide a kind of fluid infusion apparatus for carrying out administration to patient, this device can comprise: reservoir, for storing infused fluid; Plunger, be positioned at reservoir inside and limit infused fluid together with described reservoir, this plunger is configured to move along described reservoir; Injection button, is operatively synchronized with the movement with described plunger, is configured to be operated; Offset qualification mechanism, arranges with described reservoir is parallel, is configured to be limited described plunger mobile preset distance in described reservoir when described injection button operates, thus is exported by the fluid of predetermined quantity in described reservoir.

In some embodiments, described offset qualification mechanism can comprise: pedestal, there are multiple guide chutes that length is equal, sliding part, be connected with described injection button operability, be configured to be pushed when described injection button is pressed slide along the first guide chute in described multiple guide chute and depart from described first guide chute when described injection button is released and proceed to the second guide chute adjacent in described multiple guide chute.

In some embodiments, described offset qualification mechanism also can comprise: energy storage component, be connected with described sliding part operability, be configured to the store mechanical energy when described sliding part slides along described first guide chute and discharge described mechanical energy when described sliding part proceeds to described second guide chute return to make described sliding part the state be not pushed.

In some embodiments, described sliding part can comprise: activation button, be connected with described injection button operability, there is circumferentially equally distributed multiple first protuberance that can embed described guide chute, and described first protuberance has driving inclined-plane, rotary slider, engage with described activation button and described energy storage component operability, there is circumferentially equally distributed multiple second protuberance that can embed described guide chute, and described second protuberance have the passive inclined-plane corresponding with described driving inclined-plane.

In some embodiments, described offset qualification mechanism can comprise: auxiliary section, there is the first opening and second opening of fixed distance, Elastic buckle, be synchronized with the movement with described injection button and described plunger, be configured to eject from described first opening when described injection button is pressed and move described fixed range to be assembled to described second opening.

In some embodiments, described auxiliary section also can comprise: SR, coordinates with described second opening, is configured to be pressed to make described Elastic buckle eject described second opening.

In some embodiments, described offset qualification mechanism also can comprise: energy storage component, be connected with described Elastic buckle operability, be configured to the store mechanical energy when described Elastic buckle moves to described second opening from described first opening and discharge described mechanical energy to make described Elastic buckle move described fixed range thus to be assembled to described first opening when described Elastic buckle ejects from described second opening.

According to the second aspect of this utility model embodiment, provide a kind of fluid infusion apparatus for carrying out administration to patient, this fluid infusion apparatus can comprise: reservoir, for storing the fluid treating infusion, injection button, has the plunger that can move along described reservoir, syringe, for receiving described reservoir, and can be synchronized with the movement with described reservoir, sealing member, be arranged at the outside of described syringe, first hollow penetrating member, the cardinal extremity of this first hollow penetrating member is communicated with described reservoir, the forward end seal of this first hollow penetrating member is in described sealing member, can with described reservoir, described injection button, described syringe is synchronized with the movement, wherein, described reservoir is driven when described injection button is pressed, described syringe and described first hollow penetrating member synchronously move to make described first hollow penetrating member run through described sealing member along first direction and are exported by the fluid in described reservoir.

In some embodiments, this fluid infusion apparatus also can comprise: energy storage component, be connected with described injector operations, be configured to the store mechanical energy when described injection button is pressed and discharge described mechanical energy when described injection button is released thus described first hollow penetrating member is sealed in described sealing member.

In some embodiments, this fluid infusion apparatus also can comprise: the second hollow penetrating member, is communicated with described reservoir operability, can when being communicated with described reservoir to described reservoir input fluid.

In some embodiments, described second hollow penetrating member can also shrink in described plunger when described injection button is pressed.

According to the third aspect of this utility model embodiment, provide a kind of fluid infusion apparatus for carrying out administration to patient, this device can comprise: reservoir, for storing infused fluid; Output valve, is connected with the export operation of described reservoir; Flexible membrane, covers on described reservoir; Injection button, be positioned on described flexible membrane, there is the filling member being full of described reservoir, be configured to be pressed to make described filling member be full of described reservoir together with described flexible membrane, force described reservoir fluid pressure to be opened by described output valve, allow the fluid in described reservoir to export.

In some embodiments, described fluid infusion apparatus also can comprise: input valve, be connected with the entry operation of described reservoir, SR, be connected with described injection button operability, be configured to be pressed described filling member is lifted from described reservoir together with described flexible membrane, impel described output valve to close, described input valve open, thus to described reservoir input fluid.

In some embodiments, described output valve can comprise ball valve.

In some embodiments, described input valve can comprise ball valve.

The fluid infusion apparatus that this utility model embodiment provides, had both been conducive to the overall dimensions reducing infusion device, and had made device compact as much as possible, be convenient to user and dress under several scenes, be conducive to again user and arrange infusion quantity quickly and easily.

Accompanying drawing explanation

Fig. 1 is the schematic cross-section of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;

Fig. 2 is the perspective view of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;

Fig. 3 is the schematic partial cross-sectional view of the amplification according to this utility model first embodiment;

Fig. 4 is the free state schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;

Fig. 5 is the working state schematic representation of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;

Fig. 6 a is the structural representation of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;

Fig. 6 b is the enlarged diagram of the parts according to this utility model second embodiment;

Fig. 7 is the schematic cross-section of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 3rd embodiment;

Fig. 8 a to Fig. 8 e is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 3rd embodiment;

Fig. 9 is the schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 4th embodiment;

Figure 10 a and Figure 10 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 4th embodiment.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model is described in further detail.It should be noted that this utility model is not limited to piece construction shown in the drawings and/or layout, when not departing from this utility model essence, various different combination can also be carried out to various embodiment of the present utility model.

This utility model embodiment provides a kind of fluid infusion apparatus for carrying out administration to patient, and this fluid infusion apparatus can comprise reservoir, plunger, injection button and offset qualification mechanism.Wherein, reservoir can have the shape that can store infused fluid, such as, have the container structure of upper surface, lower surface and outer surface.In some embodiments, reservoir is cylindric.The storable infused fluid of reservoir can be various liquid, gas etc. for carrying out administration to patient.In some embodiments, fluid can be the therapeutic fluid medicine of such as insulin and so on.Plunger, is positioned at reservoir inner and limit infused fluid together with reservoir, and being configured to can moving along reservoir, thus fluid is released reservoir or fluid is sucked reservoir.When reservoir is cylindric, plunger can along the axially-movable of reservoir.Injection button, is operatively synchronized with the movement with plunger, can be operated, and such as, can be pressed by user or discharge.Offset qualification mechanism, arrange with described reservoir is parallel, to can be configured to when injection button is operated (such as, be pressed or releasing operation time) limit plunger mobile preset distance in reservoir, thus the fluid of predetermined quantity corresponding for this preset distance in reservoir to be exported.Such as, can by offset qualification organization establishes in the outside of the outer surface of reservoir or inner side, its geometry imaginary center line and the geometry virtual center line parallel of reservoir.When reservoir is cylindric, the plunger in reservoir moves along the axis of reservoir, offset qualification mechanism preferably with the axis being parallel of reservoir.By offset qualification mechanism relative to the parallel placement of reservoir, the scheme of reservoir infusion amount adjustment is directly carried out (in this scheme by screw rod with existing, as the screw rod of displacement mechanism and reservoir on the same line, considerably increase the size of single unit system) compare, the overall dimensions of fluid infusion apparatus can be reduced, make device compacter, facilitate user to dress in various scene (such as, Outdoor Scene etc.) and use; And the distance limiting plunger movement at every turn by limiting mechanism determines infusion amount, without the need to manual adjustments screw rod, simplify the process that infusion amount regulates.

[the first embodiment]

Fig. 1 is the schematic cross-section of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 2 is the perspective view of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 3 is the schematic partial cross-sectional view of the amplification according to this utility model first embodiment; Fig. 4 is the free state schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 5 is the working state schematic representation of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment.

As shown in Figure 1 to Figure 3, fluid infusion apparatus 100 can comprise: reservoir 101, plunger 102, injection button 103, pedestal 104, activation button 105, rotary slider 106, spring 107.Reservoir 101 can be bolus quantities reservoir, stores the Fluid Volume of a shot.And, reservoir (such as, cylindric reservoir) 101 can via the penetrating member 1012 of check valve 1011 and hollow (such as, the draw point etc. of hollow) be communicated with, to open check valve 1011 (such as along reservoir when axially (direction from Graph-Oriented 1) moves at plunger 102 downwards, the direction of the arrow indication on the right side of check valve in Fig. 1 1011) fluid in reservoir 101 is exported by penetrating member 1012, such as, patient is delivered to.Reservoir 101 can also be communicated with fluid Supply House 1014 via check valve 1013, motive force can be applied (such as to fluid Supply House 1014, the sensing of the arrow on the right side of fluid Supply House 1014 in Fig. 1 applies motive force), force check valve 1013 along its on the upside of the direction of arrow open, thus to reservoir 101 supply fluid.

As depicted in figs. 1 and 2, injection button 103, pedestal 104, activation button 105, rotary slider 106 and spring 107 can be arranged in parallel relative to reservoir 101, wherein, pedestal 104, activation button 105, rotary slider 106 and spring 107 can together with form offset qualification mechanism, the geometric center lines of this offset qualification mechanism can be parallel with the moving direction of reservoir 101 inner plunger 102.This offset qualification mechanism can coordinate with injection button 103, limits plunger 102 mobile preset distance in reservoir 101.Injection button 103 be can act on plunger 102 and activation button 105 simultaneously and there is the interlock button of column structure 1031, the axis direction (i.e. the geometric center lines direction of offset qualification mechanism) being arranged to column structure 1031 is parallel with the axis direction (i.e. the moving direction of plunger 102) of reservoir 101, and with can be parallel along the plunger 102 moved axially of reservoir 101, be connected coaxially with the activation button 105 be positioned at below injection button 103, that is, pressing injection button 103 can make plunger 102 and activation button 105 be synchronized with the movement side by side.Rotary slider 106 can be the below that axle is arranged at activation button 105 coaxially with the column structure 1031 of injection button 103.When injection button 103 is pressed, rotary slider 106 can the length direction of column structure 1031 along injection button 103 under the effect of activation button 105 move downward.Spring 107 can be coil tension spring, and be nested with and be positioned on upper and coaxial with the column structure 1031 of injection button 103 cylindrical part 110 of base 109 (such as, the base of circular surface), top covers spring compressor 108.The top surface of spring compressor 108 contacts with the lower surface of the column structure 1031 of injection button 103, and when injection button 103 is pressed, the spring 107 in spring compressor 108 is subject to downward active force, and spring 107 is compressed thus store mechanical energy.Pedestal 104 can be the structure of similar cylindrical shape, activation button 105, rotary slider 106, spring 107 and spring compressor 108 can be wrapped up, cylinder-like structure be circumferentially evenly distributed with multiple (such as, more than 2) guide chute 1041, be be communicated with at end or lower end (direction from Graph-Oriented 1) between guide chute 1041, allow rotary slider 106 to slide from guide chute and proceed to another adjacent guide chute.Such as, pedestal 104 can be arranged on base 109, and interlock button 103, activation button 105, rotary slider 106, spring compressor 108, spring 107 are accommodated in the space of pedestal 104 and base 109 restriction jointly.In some other embodiment, the structure that pedestal 104 can form as one with base 109.

Activation button 105 can be connected with injection button 103 operability, and when pressing injection button 103 and making it move downward, activation button 105 also can move downward with injection button 103.Activation button 105 has circumferentially equally distributed multiple protuberance 1051, and each protuberance 1051 has driving inclined-plane 1052, and these protuberances 1051 are corresponding with guide chute 1041 position of pedestal 104, and can embed corresponding guide chute 1041.

Rotary slider 106 can engage with activation button 105 operability, there is circumferentially equally distributed multiple protuberance 1061, protuberance 1051 location matches of these protuberances 1061 and activation button 105, there is the passive inclined-plane 1062 corresponding with driving inclined-plane 1052, the guide chute 1041 of pedestal 104 can be embedded accordingly.Protuberance 1051 and the protuberance 1061 of activation button 105 and rotary slider 106 are passable, as shown in Figure 3, embed the guide chute 1041 of pedestal 104, and the passive inclined-plane 1062 of rotary slider 106 can slide along guide chute 1041 under the driving on the driving inclined-plane 1052 of activation button 105.

Spring 107 can contact with rotary slider 106 operability, be subject to when pressing active force moves downward along guide chute as energy storage component store mechanical energy at rotary slider 106, the mechanical energy release will stored when rotary slider 106 proceeds to another guide chute, apply driving force (such as, the restoring force of spring) to rotary slider 106 and be back to make rotary slider 106 state be not pressed.

The protuberance 1051 of activation button 105 and the protuberance 1061 of rotary slider 106 are arranged in the guide chute 1041 of pedestal 104 by similar spline mode, under the support of spring 107, remain on free state, as shown in Figure 4.When user presses injection button 103, the passive inclined-plane 1062 of the protuberance 1061 of rotary slider 106 moves downward along guide chute under the effect on the driving inclined-plane 1052 of activation button 105, when moving to the end of guide chute, as shown in Figure 5, the protuberance 1061 of rotary slider 106 departs from guide chute and rotates, and enters adjacent guide chute.The process store mechanical energy that spring 107 moves downward along guide chute at rotary slider 106.When rotary slider 106 proceeds to another guide chute, spring 107 discharges the mechanical energy stored, and applies driving force, make rotary slider 106 return to the free state shown in Fig. 4 together with activation button 105 to rotary slider 106.Pressing injection button 103, while driving activation button 105 and rotary slider 106 to move downward along guide chute, also identical displacement is produced with the plunger 102 that injection button 103 is synchronized with the movement, because the length of guide chute is equal, thus each also mobile fixing distance of plunger 102, releases the fluid of fixed qty from reservoir 101.

By the parts such as the pedestal 104, activation button 105, rotary slider 106 and the spring 107 that are arranged in parallel with reservoir, this utility model embodiment is engaged at every turn that pressing injection button 103 time limit fixed column plug 102 moves fixing distance, both the overall dimensions of device had been reduced significantly, it also avoid complicated injection volume setting up procedure, very convenient user uses.

[the second embodiment]

Fig. 6 a is the structural representation of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment; Fig. 6 b is the enlarged diagram of the parts according to this utility model second embodiment.

As shown in Figure 6 a, fluid infusion apparatus 200 can comprise reservoir 201, plunger 202, injection button 203, auxiliary section 204, Elastic buckle 205.Wherein, plunger 202 can one end of closed circular cylindricality reservoir 201, and can move axially along reservoir in reservoir 201.Injection button 203 contacts reservoir 201 inner chamber contrary one end with plunger 202 connects, and the junction between injection button 203 and plunger 202 is provided with Elastic buckle 205.Auxiliary section 204 is set to parallel with the length bearing of trend of reservoir 201, and corresponding with the position of Elastic buckle 205.Injection button 203 can drive plunger 202 and Elastic buckle 205 synchronously to move.In some other embodiment, the structure that plunger 202, Elastic buckle 205 and injection button 203 can form as one.

Auxiliary section 204 is arranged in parallel relative to reservoir 201, can be arranged in the top of reservoir 201 as shown in 6a, such as, can be nested with the outer surface at reservoir 201, or, can to form as one structure with reservoir 201.Auxiliary section 204 is provided with two openings 2041 and 2042 of fixed distance, and Elastic buckle 205 can be assembled in opening 2041 and 2042.

When pressing injection button 203, one end of Elastic buckle 205 is ejected from the opening 2041 of auxiliary section 204, and mobile fixed range, arrive the position of the second opening 2042, and be assembled to the second opening 2042, meanwhile, plunger 202 also correspondingly moves above-mentioned fixed range, force the fluid exerts pressure in reservoir 201 thus open output valve 2011 (such as, check valve), fluid is released from reservoir 201, by the fluid of release via the output channel 2013 be communicated with output valve 2011 (such as, the entry needle etc. of hollow) be delivered to patient, as shown in the arrow points in left side in Fig. 6 a, reservoir 201 is converted to the state of fluid evacuation from the shape body that fluid is full of.Wherein, output valve 2011 can be the check valve of one end contrary with plunger 202 structure being as shown in Figure 6 b arranged at reservoir 201.This one-way valve structures can have two half-duplex channels, and one can be served as output valve, and another can serve as input valve, and such structure can be conducive to the manufacturing process of simplification device.Due to Elastic buckle 205 from opening 2041 to the distance of opening 2042 movement be fixing, thus the distance of each movement of plunger 202 is also fixing, and the amount of fluid of output is also determined, avoids and manually arranges infusion amount at every turn, simplify the setting up procedure of infusion amount, user-friendly.

Fluid infusion apparatus 200 also can comprise the energy storage component be connected with Elastic buckle 205 operability, such as, and coil tension spring etc.Energy storage component can move to the process store mechanical energy of opening 2042 at Elastic buckle 205 from opening 2041.This energy storage component forms offset qualification mechanism together with auxiliary section 204 and Elastic buckle 205, and this offset qualification mechanism coordinates with injection button 203, limits plunger 202 mobile preset distance in reservoir 201.

Auxiliary section 204 also can comprise SR 2043, coordinates with opening 2042, and pressing SR 2043 can make SR 2043 embed opening 2042 to force Elastic buckle 205 to eject opening 2042.The mechanical energy stored by energy storage component release can drive Elastic buckle 205 to move to opening 2041 from opening 2042, meanwhile, reservoir 201 can open input valve 2012 (such as, the check valve of structure as shown in Figure 6 b), fluid is sucked reservoir 201 via the input channel 2014 (such as, the pin etc. of hollow) be communicated with input valve 2012.As shown in the arrow points on right side in Fig. 6 a, reservoir 201 is the state that fluid is full of from the State Transferring of fluid evacuation.

[the 3rd embodiment]

Fig. 7 is the schematic cross-section of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 3rd embodiment; Fig. 8 a to Fig. 8 e is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 3rd embodiment.

As shown in Figure 7, fluid infusion apparatus 300 can comprise reservoir 301, injection button 302, syringe 303, sealing member 304, first hollow penetrating member 305.Wherein, reservoir 301 can store treat infusion fluid (such as, insulin etc.), one end of injection button 302 can with the plunger 311 that can move vertically in reservoir 301 (such as, silica piston etc.) operability connection, such as, one end of injection button 302 can be made to be accommodated in plunger 311, pressing injection button 302 can promote plunger 311 and move in reservoir 301.Reservoir 301 can entirety be accommodated in syringe 303, such as, can be accommodated in the cylindrical recess of syringe 303 central authorities.Syringe 303 can be movable, synchronously can move with reservoir 301.Sealing member 304 can be arranged at the outside of syringe 303, such as, can be arranged at the outside of close output channel 310 side of syringe 303.First hollow penetrating member 305 can be arranged between reservoir 301 and sealing member 304, and its cardinal extremity can run through syringe 303 and be communicated with reservoir 301, and forward end seal is in sealing member 304.During pressing injection button 302, the first hollow penetrating member 305 can move along with the motion of reservoir 301, syringe 303.

Sealing member 304 can be the parts that such as silica gel plug and so on has sealing function, can be arranged at a fixed position of the outside of syringe 303, can not move along with the movement of syringe 303.In the embodiment shown in figure, sealing member 304 is arranged at the below of movable syringe 303, such as, can be fixed on the support unit 306 of supporting syringe 303.

First hollow penetrating member 305 can be the draw point with hollow structure, cardinal extremity is communicated with (such as with reservoir 301, syringe 303 can be pierced through and insert in the chamber of reservoir 301), a part for the sealing member 304 outside syringe 303 is pierced through in front end, and be sealed in sealing member 304, under the state of this sealing, the fluid in reservoir 301 can not flow out via the first hollow penetrating member 305.In the forward end seal of the first hollow penetrating member 305 in sealing member 304 when, pressing injection button 302, because the fluid in reservoir 301 is incompressible, injection button 302 drives plunger 311, and together with reservoir 301, syringe 303, first hollow penetrating member 305, downwards (direction from Graph-Oriented 7) move a segment distance, until the first hollow penetrating member 305 runs through sealing member 304, the fluid in reservoir 301 is exported via the first hollow penetrating member 305.

Fluid infusion apparatus 300 also can comprise energy storage component 307, such as, and coil tension spring etc.Energy storage component 307 can be connected with syringe 303 operability, such as, the outer surface of the recess of the storage reservoir 301 of syringe 303 can be arranged at, and can when injection button 302 is pressed, along with syringe 303 and reservoir 301 move down and compressed, thus store mechanical energy.

Fluid infusion apparatus 300 can also comprise the second hollow penetrating member 308, such as, has the draw point etc. of hollow structure.Second hollow part 308 can be bent, and such as, can be bent 90 degree, is fixed on the side above syringe 303 by the fixed stop 309 being arranged at (direction from Graph-Oriented 7) above syringe 303.Second hollow penetrating member 308 can be communicated with reservoir 301 operability, such as, can injection button 302 be pressed against the first hollow penetrating member 305 run through sealing member 304 time, be accommodated in plunger 311, be not communicated with reservoir 301 fluid, thus allow fluid only to flow out via the first hollow penetrating member 305; Can at release injection button 302, energy storage component 307 discharge mechanical energy move upward together with reservoir 301 and the first hollow penetrating member 305 with injector-actuated 303 and the first hollow penetrating member 305 bounces back in sealing member 304 time, be communicated with reservoir 301 fluid, allow external fluid only to flow into reservoir 301 via the second hollow penetrating member 308.

Fig. 8 a to Fig. 8 e shows each mode of operation of fluid infusion apparatus 300.As shown in Figure 8 a, fluid infusion apparatus 300 is in free state, first hollow penetrating member 304 is sealed in sealing member 304, the front end of the second hollow penetrating member 308 is positioned at reservoir 301, be full of fluid in reservoir 301, the fixed stop 309 fixing the second hollow penetrating member 308 contacts with the upper surface of syringe 303, next, apply external force and press injection button 302 downwards, because the fluid in reservoir 301 is incompressible, the plunger 311 of injection button 302 drives reservoir 301, receive the syringe 303 of reservoir 301 and move down a segment distance together with inserting the first hollow penetrating member 305 of reservoir 301, until the first hollow penetrating member 305 runs through sealing member 304, second hollow penetrating member 308 shrinks in plunger 311 simultaneously, reservoir 301 is communicated with outside fluid delivery pipeline 310 fluid, syringe 303 can not continue to move downward, as shown in Figure 8 b.Continue pressing injection button 302 downwards, plunger 311 continues to move down in reservoir 301, all exports the fluid of reservoir 301 to output channel 310 via the first hollow penetrating member 305, and as shown in Figure 8 c, the fluid infusion in reservoir 301 is complete.In the process that pressing injection button 302 makes plunger 311 move down, energy storage component 307 store mechanical energy.After the fluid infusion of reservoir 301 is complete, release injection button 302, energy storage component 307 can discharge the mechanical energy of storage, order about syringe 303, reservoir 301 moves upward together with the first hollow penetrating member 305, as shown in figure 8d, first hollow penetrating member 305 moves up in sealing member 304, be sealed in sealing member 304, shrink the second hollow penetrating member 308 in plunger 311 along with moving upward of plunger 311 and can expose from plunger 311, reservoir 301 is communicated with the second hollow penetrating member 308 fluid, outside fluid is allowed to flow into reservoir 301, the upper surface of simultaneously movable syringe 303 contacts with the fixed stop 309 fixing the second hollow penetrating member 308, stop that syringe 303 can not continue to move upward.The mechanical energy actuation plunger 311 that energy storage component 307 discharges continues to move up, and allows fluid to continue to flow into reservoir 301, to reservoir 301 fill fluid via the second hollow penetrating member 308.

The fluid infusion apparatus 300 of this utility model embodiment can be fabricated to wearable equipment, such as, can adhere on patient skin with the direction parallel with the length direction of reservoir 301.

This utility model embodiment makes plunger distance of movement in the process of injection and fill fluid fix by the cooperation of multiple parts such as injection button 302, syringe 303, sealing member 304, first hollow penetrating member 305, second hollow penetrating member 308, energy storage component 307, realize once pressing the fluid output that injection button can realize fixed qty, eliminate the complicated setting up procedure of infusion amount, be user-friendly to.

[the 4th embodiment]

Fig. 9 is the schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 4th embodiment; Figure 10 a and Figure 10 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model the 4th embodiment.

As shown in Fig. 9, Figure 10 a and Figure 10 b, fluid infusion apparatus 400 can comprise reservoir 401, output valve 402, flexible membrane 403, injection button 404, input valve 405, SR 406 and pedestal 407.Wherein, SR 406, injection button 404 can be installed on pedestal 407, such as, have the housing type pedestal of accommodation space.And reservoir 401, output valve 402 and input valve 405 can be accommodated in the accommodation space of pedestal 407, as shown in Figure 9.The opening of reservoir 401 can flush with the outer surface of pedestal 407, and flexible membrane 403 is covered on this outer surface, thus is isolated from the outside by reservoir 401.Wherein, SR 406 can be installed in the installing hole 4071 of pedestal 407 side, is accommodated in completely in the installing hole 4071 of pedestal 407 under the state do not contacted with injection button 404, and its end face flushes with the outer surface of pedestal 407; Injection button 404 can be installed on the position parallel with SR 406 of pedestal 407, when injection button 404 is pressed, its Embedded Division 4042 can embed the installing hole 4071 of pedestal 407, thus a part for SR 406 is ejected installing hole 4071 part.Reservoir 401 can be used for the fluid storing infusion, such as, can be profile be as as-shown-in figures 10 a and 10b bowl-shape container, its outlet and entrance respectively with output valve 402 (such as, ball valve etc.) and the connection of input valve 405 (such as, ball valve etc.) operability.Such as, output valve 402 can be arranged at immediately below reservoir 401, and the fluid of reservoir 401 can flow to syringe cylinder etc. via output valve 402.Input valve 405 can be arranged at position parallel with output valve 402 below reservoir, and fluid line can be arranged the outlet of input valve 405 is communicated with bowl-shape reservoir 401, thus enable outside fluid flow to reservoir 401 via input valve 405.Reservoir 401 can be arranged at the below of injection button 404, specifically, can be arranged at the below of the filling member 4041 of injection button 404.Flexible membrane 403 is also provided with between reservoir 401 and filling member 4041, specifically, can as shown in Fig. 9 and Figure 10 a and Figure 10 b, flexible membrane 403 is covered in the opening of reservoir 401, flexible membrane 403 surface is contacted with reservoir 401, and another surface can contact with filling member 4041.Flexible membrane 403 can be have elastic relatively thin film, strengthens sealing when can be used for filling, such as, and pellosil etc., thus the fluid in reservoir 401 is isolated from the outside.

Injection button 404 can be arranged on flexible membrane 403, has the filling member 4041 being full of reservoir 401.In the embodiment shown in Fig. 9, filling member 4041 is the bowl-shape implant of class can filling up bowl-shape reservoir 401.In some other embodiment, filling member 4041 can also be other shapes of mating with the overall dimensions of reservoir 401, such as, cylindrical etc.From the direction of Graph-Oriented 10a, downward active force is applied to injection button 404, injection button 404 drives filling member 4041 to move downward together with flexible membrane press-in reservoir 401, make the space of reservoir 401 be filled part 4041 to fill up, force the fluid exerts pressure in reservoir 401 thus output valve 402 is opened, allowing the fluid of reservoir 401 to export.

Injection button 404 can be connected with SR 406 operability.Such as, injection button 404 can have Embedded Division 4042, it can embed SR 406 installing hole 4071 on pedestal 407, move down (such as at injection button 404, the direction of arrow shown in above injection button 404 in Figure 10 a applies active force makes injection button 404 move down) and when being full of reservoir 401, Embedded Division 4042 can insert the installing hole 4071 of SR 406 at pedestal 407, the direction of arrow of a part for SR 406 on the right side of SR 406 in Figure 10 a is ejected the outer surface of pedestal 407.

As shown in fig. lob, the direction of arrow on the right side of SR 406 applies pressed by external force SR 406, partially retracted pedestal 407 surface that SR 406 is ejected, impel the Embedded Division 4042 of injection button 404 to eject installing hole 4071 simultaneously, the direction of arrow above injection button 404 in Figure 10 b moves upward, filling member 4041 is driven to lift from reservoir 401 together with flexible membrane 403, the negative pressure formed in reservoir 401 can impel the output valve 402 be communicated with reservoir 401 to close, input valve 405 is opened, fluid is allowed to flow into reservoir 401, realize the fluid filled to reservoir 401.

The fluid of reservoir 401 internal fixtion quantity just can be exported by the often pressing shot button 404 that is engaged in of multiple parts such as injection button 404, flexible membrane 403 and output valve 402 by this utility model embodiment, avoid complicated infusion amount setting program, simplify infusion amount setting up procedure, very convenient user uses.

It should be noted that; although each side of said apparatus is described by specific order and specific structural configuration; but this only for illustrating, does not form restriction to this utility model, claimed theme is not limited to described order and structural configuration.It will be appreciated by those skilled in the art that when not departing from this utility model essence, various amendment can be made to invention, and equivalent replacement can be carried out.Therefore, the claimed theme of this utility model is not limited to above-mentioned disclosed detailed description of the invention, also can comprise all technical schemes and technical scheme equivalent with it that fall into claims.In addition, in the claims, except as otherwise noted, all terms should be understood by the most wide in range rational meaning.

Claims (15)

1. the fluid infusion apparatus for carrying out administration to patient, is characterized in that, comprising:

Reservoir, for storing infused fluid;

Plunger, be positioned at described reservoir inside and limit infused fluid together with described reservoir, this plunger is configured to move along described reservoir;

Injection button, is operatively synchronized with the movement with described plunger, is configured to be operated;

Offset qualification mechanism, arranges with described reservoir is parallel, is configured to be limited described plunger mobile preset distance in described reservoir when described injection button operates, thus is exported by the fluid of predetermined quantity in described reservoir.

2. device according to claim 1, is characterized in that, described offset qualification mechanism comprises:

Pedestal, has multiple guide chutes that length is equal,

Sliding part, be connected with described injection button operability, be configured to be pushed when described injection button is pressed slide along the first guide chute in described multiple guide chute and depart from described first guide chute when described injection button is released and proceed to the second guide chute adjacent in described multiple guide chute.

3. device according to claim 2, is characterized in that, described offset qualification mechanism also comprises:

Energy storage component, be connected with described sliding part operability, be configured to the store mechanical energy when described sliding part slides along described first guide chute and discharge described mechanical energy when described sliding part proceeds to described second guide chute return to make described sliding part the state be not pushed.

4. device according to claim 3, is characterized in that, described sliding part comprises:

Activation button, is connected with described injection button operability, have circumferentially equally distributed multiple first protuberance that can embed described guide chute, and described first protuberance has driving inclined-plane,

Rotary slider, engages with described activation button and described energy storage component operability, have circumferentially equally distributed multiple second protuberance that can embed described guide chute, and described second protuberance has the passive inclined-plane corresponding with described driving inclined-plane.

5. device according to claim 1, is characterized in that, described offset qualification mechanism comprises:

Auxiliary section, has the first opening and second opening of fixed distance,

Elastic buckle, synchronously moves with described injection button and described plunger, is configured to eject from described first opening when described injection button is pressed and move described fixed range to be assembled to described second opening.

6. device according to claim 5, is characterized in that, described auxiliary section also comprises:

SR, coordinates with described second opening, is configured to be pressed to make described Elastic buckle eject described second opening.

7. device according to claim 6, is characterized in that, described offset qualification mechanism also comprises:

Energy storage component, be connected with described Elastic buckle operability, be configured to the store mechanical energy when described Elastic buckle moves to described second opening from described first opening and discharge described mechanical energy to make described Elastic buckle move described fixed range thus to be assembled to described first opening when described Elastic buckle ejects from described second opening.

8. the fluid infusion apparatus for carrying out administration to patient, is characterized in that, comprising:

Reservoir, for storing the fluid treating infusion;

Injection button, is connected with the plunger operability of moving along described reservoir, is configured to be operated;

Syringe, for receiving described reservoir, and synchronously can move with described reservoir,

Sealing member, is arranged at the outside of described syringe,

First hollow penetrating member, the cardinal extremity of described first hollow penetrating member is communicated with described reservoir, and forward end seal, in described sealing member, synchronously can be moved with described reservoir, described injection button, described syringe,

Wherein, drive described reservoir, described syringe and described first hollow penetrating member synchronously mobile to make described first hollow penetrating member run through described sealing member by the fluid output in described reservoir when described injection button is pressed.

9. device according to claim 8, is characterized in that, also comprises:

Energy storage component, is connected with described injector operations, is configured to the store mechanical energy when described injection button is pressed and discharges described mechanical energy when described injection button is released thus described first hollow penetrating member is sealed in described sealing member.

10. device according to claim 9, is characterized in that, also comprises:

Second hollow penetrating member, is communicated with described reservoir operability, can when being communicated with described reservoir to described reservoir input fluid.

11. devices according to claim 10, is characterized in that, described second hollow penetrating member can also shrink in described plunger when described injection button is pressed.

12. 1 kinds for the fluid infusion apparatus of carrying out administration to patient, is characterized in that, comprising:

Reservoir, for storing infused fluid;

Output valve, is connected with the export operation of described reservoir;

Flexible membrane, covers on described reservoir;

Injection button, be positioned on described flexible membrane, there is the filling member being full of described reservoir, be configured to be pressed to make described filling member be full of described reservoir together with described flexible membrane, force described reservoir fluid pressure to be opened by described output valve, allow the fluid in described reservoir to export.

13. devices according to claim 12, is characterized in that, also comprise:

Input valve, is connected with the entry operation of described reservoir,

SR, is connected with described injection button operability, is configured to be pressed described filling member is lifted from described reservoir together with described flexible membrane, impels described output valve to close and described input valve open, thus to described reservoir input fluid.

14. devices according to claim 12 or 13, it is characterized in that, described output valve comprises ball valve.

15. devices according to claim 13, is characterized in that, described input valve comprises ball valve.