CN204699169U - Hydraulic and fluid infusion device - Google Patents
Hydraulic and fluid infusion device Download PDFInfo
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- CN204699169U CN204699169U CN201520344302.0U CN201520344302U CN204699169U CN 204699169 U CN204699169 U CN 204699169U CN 201520344302 U CN201520344302 U CN 201520344302U CN 204699169 U CN204699169 U CN 204699169U
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Abstract
This utility model provides hydraulic, fluid infusion device for fluid infusion device.Wherein, this fluid infusion device is used for carrying out administration to patient, and also comprise fluid reservoir, hydraulic comprises: the first hydraulic pressure chamber, being connected, accommodating hydraulic fluid in the first hydraulic pressure chamber by first piston with providing the external power supply of driving force; Second hydraulic pressure chamber, accommodates hydraulic fluid in the second hydraulic pressure chamber; And flow selection mechanism, first hydraulic pressure chamber is communicated with by this flow selection mechanism fluid with the second hydraulic pressure chamber, driving force is reached the second piston between fluid reservoir and the second hydraulic pressure chamber so that the infused fluid in this fluid reservoir is delivered to patient by hydraulic fluid, further, flow selection mechanism is also arranged to select the flow flowing to the hydraulic fluid of the second hydraulic pressure chamber from the first hydraulic pressure chamber to determine to carry from fluid reservoir to patient the flow of infused fluid with selectivity.Implement said apparatus, equipment, the basal insulin amount of multiple different flow can be provided to inject, insulin pump volume can also be reduced, and be more conducive to patient's wearing.
Description
Technical field
This utility model relates to the fluid infusion field for carrying out administration to patient, in particular to the hydraulic for fluid infusion device and the fluid infusion device with this hydraulic.
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 patients helps blood glucose or interim injection of insulin in control volume by orally-taken blood sugar reducing medicine.
The treatment of type 2 diabetes mellitus, current clinical most of patients adopts insulin pen injectors, as promise and, gift the brand such as to carry out, and also have small part patient to take Insulin Pump Therapy, but two kinds of technology all exists drawback at present.
The shortcoming of novopen comprises cannot realize continued therapy, treatment when being not easy to outdoor activity, multiple injection are poor for patient comfort degree, and easily causes the sclerosis etc. of patient's injection place skin.
And the existing insulin pump being suitable for type 2 diabetes mellitus patient has electronic type and mechanical type two kinds, these two kinds of insulin pumps all need optimized integration amount injection simultaneously and bolus quantities to inject two kinds of infusion of insulin modes.Wherein, basic crack injection and bolus quantities injection are integrated in a set of infusion system by electronic type insulin pump, often complex structure, and weight is comparatively large, and expensive.And basic crack injection and bolus quantities injection are generally separated into two cover systems be parallel to each other by existing mechanical insulin pump, finally be aggregated into same infusion orifice and realize injection, mechanical insulin pump directly provides propelling movement power often through Compress Spring, moving component is more, volume is comparatively large and ratio of precision is poor, and a kind of basal insulin amount of single flow often can only be provided to inject, be unfavorable for that patient adjusts in real time according to self diet and health.
Utility model content
For solving the problem, this utility model provides a kind of and can select the hydraulic of the flow of different conveying infused fluid and comprise the fluid infusion device of this hydraulic.
According to the first aspect of this utility model embodiment, provide a kind of hydraulic for fluid infusion device, this fluid infusion device is used for carrying out administration to patient, also comprise fluid reservoir, hydraulic can comprise: the first hydraulic pressure chamber, being connected with providing the external power supply of driving force by first piston, in this first hydraulic pressure chamber, accommodating hydraulic fluid; Second hydraulic pressure chamber, accommodates hydraulic fluid in this second hydraulic pressure chamber; And flow selection mechanism, first hydraulic pressure chamber is communicated with by flow selection mechanism fluid with the second hydraulic pressure chamber, driving force is applied to the second piston between fluid reservoir and the second hydraulic pressure chamber so that the infused fluid in this fluid reservoir is delivered to patient by described hydraulic fluid, and flow selection mechanism is arranged to select the flow flowing to the hydraulic fluid of described second hydraulic pressure chamber from described first hydraulic pressure chamber to determine to carry from fluid reservoir to patient the flow of infused fluid with selectivity.
In some embodiments, this flow selection mechanism comprises: restricted flow passage, is communicated with by the first hydraulic pressure chamber with the second hydraulic pressure chamber fluid; Passages regulate device, for regulating space that in restricted flow passage, hydraulic fluid can pass through to select the flow of the hydraulic fluid flowing to the second hydraulic pressure chamber from the first hydraulic pressure chamber.This passages regulate device can be removable plunger, by this removable plunger mobile to regulate the space that in restricted flow passage, hydraulic fluid can pass through.
In some embodiments, restricted flow passage can be tapered channel, and the stopper head of removable plunger is the taper corresponding with this tapered channel or rounded nose, by this removable plunger mobile to regulate the gap between this stopper head and described restricted flow passage.
In some embodiments, restricted flow passage can be the multiple through holes on the partition that is arranged between the first hydraulic pressure chamber and the second hydraulic pressure chamber, regulates the space that in restricted flow passage, hydraulic fluid can pass through by mobile removable plunger with the part closed in multiple through hole.
In other embodiments, this flow selection mechanism comprises: at least two restricted flow passages, is communicated with by the first hydraulic pressure chamber with the second hydraulic pressure chamber fluid; Channel selecting mechanism, for optionally opening or closing the partial throttle passage at least two restricted flow passages.
In further embodiment, channel selecting mechanism comprises: mechanism body, and be connected with each at least two restricted flow passages and have the groove corresponding with each restricted flow passage, this groove is connected with corresponding restricted flow passage; Be covered in the barrier film above groove; And being positioned at the button of diaphragm, this button is provided with the projection corresponding with groove, and is arranged to press button to make protruding press-in together with barrier film in groove to block the flowing flowing through the hydraulic fluid of corresponding restricted flow passage.Preferably, to be set to the flow of the hydraulic fluid flowed in these at least two restricted flow passages different at least two restricted flow passages.
In some embodiments, hydraulic also comprises: bolus quantities injection mechanism, for applying pressure to the hydraulic fluid in the second hydraulic pressure chamber to be applied for the driving force of bolus quantities injection to the second piston; And accommodating the 3rd hydraulic pressure chamber of hydraulic fluid, the 3rd hydraulic pressure chamber is communicated with the second hydraulic pressure chamber fluid, for supplementing the hydraulic fluid in the second hydraulic pressure chamber.Preferably, one end of the 3rd hydraulic pressure chamber is communicated with the second hydraulic pressure chamber fluid by check valve, and the other end is communicated with atmospheric environment by the 3rd piston.Alternatively, this bolus quantities injection mechanism is positioned at the side of the second hydraulic pressure chamber and is connected with the second hydraulic pressure chamber.
According to the second aspect of this utility model embodiment, provide a kind of fluid infusion device for carrying out administration to patient, this equipment comprises: housing; Fluid reservoir, is positioned at housing and for holding infused fluid; Infusion assembly, is communicated with fluid reservoir fluid, for being delivered in patient body by the infused fluid in fluid reservoir; And hydraulic as above, this hydraulic is positioned at housing, by hydraulic fluid, driving force is applied to the second piston so that the infused fluid in this fluid reservoir is delivered to patient.
The said apparatus that this utility model embodiment provides, equipment, because hydraulic of the present utility model comprises flow selection mechanism, therefore, it is possible to selectivity determines the flow carrying infused fluid from fluid reservoir to patient, make fluid infusion device of the present utility model can realize multiple different flow basic crack injection, be conducive to patient adjust in real time according to own situation and flow select more accurate.Simultaneously, because hydraulic of the present utility model comprises the first hydraulic pressure chamber and the second hydraulic pressure chamber, make this hydraulic can be changed the direction of driving force by hydraulic fluid, thus significantly reduce the volume of fluid infusion device, like this, this fluid infusion device can stick in patient skin (such as housing can be suitable for being worn on patient skin), or is worn on belt, is placed in pocket etc., be convenient to patient dress, conveniently carry out the normal Working Lifes such as outdoor activity.
Accompanying drawing explanation
Describe nonrestrictive and feature that is non-exclusive with reference to the following drawings, wherein identical Reference numeral refers to identical part in various figures:
Fig. 1 is the sectional view comprising the fluid infusion device of hydraulic according to a kind of embodiment of this utility model;
Fig. 2 is the sectional view comprising the fluid infusion device of hydraulic according to the another kind of embodiment of this utility model;
Fig. 3 is the perspective view of the fluid infusion device shown in Fig. 2;
Fig. 4 is the sectional view comprising the fluid infusion device of hydraulic according to another embodiment of this utility model;
Fig. 5 A and Fig. 5 B is the unlatching of channel selecting mechanism in the hydraulic shown in Fig. 4, schematic diagram when closing respectively;
Fig. 6 is the schematic appearance of the fluid infusion device shown in Fig. 4;
Fig. 7 is the perspective view of the fluid infusion device shown in Fig. 4;
Fig. 8 is the method schematic diagram for the manufacture of hydraulic;
Fig. 9 is the method schematic diagram for the manufacture of the fluid infusion device with hydraulic.
In figure, 1-fluid infusion device, 100, 200-hydraulic, 10-matrix, 11-first hydraulic pressure chamber, 12-second hydraulic pressure chamber, 13-second piston, 14, the selection mechanism of 24-flow, 141, 145-restricted flow passage, 142-passages regulate device, 143-knob, 144-stopper head, 146-plunger arm, 2411, 2412, 2413-restricted flow passage, 242-channel selecting mechanism, 2421-mechanism body, 2422-groove, 2423-barrier film, 2424-button, 2425-is protruding, 15-bolus quantities injection mechanism, 16-the 3rd hydraulic pressure chamber, 161-check valve, 162-the 3rd piston, 17-first piston, 18-biasing member, 30-fluid reservoir, 40-infusion assembly.
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.Embodiment of the present utility model disclosed herein provides the hydraulic for fluid infusion device of the infused fluid basic crack injection that can realize different flow, thus provides volume significantly to reduce and the fluid infusion device of patient's wearing of being more convenient for.Content disclosed herein is also provided for the method manufacturing this hydraulic and corresponding fluids infusion apparatus.
As described in detail below, exemplary embodiment of the present utility model relates to the hydraulic for fluid infusion device, this hydraulic changes the direction of driving force by hydraulic fluid, and is injected by the infused fluid basic crack that the various flows of hydraulic fluid realizes different flow to mode.In some embodiments, fluid infusion device comprises fluid reservoir, and this hydraulic can comprise: the first hydraulic pressure chamber, is connected with providing the external power supply of driving force by first piston, accommodates hydraulic fluid in this first hydraulic pressure chamber; Second hydraulic pressure chamber, accommodates hydraulic fluid in this second hydraulic pressure chamber; And flow selection mechanism, first hydraulic pressure chamber is communicated with by this flow selection mechanism fluid with the second hydraulic pressure chamber, driving force is applied to the second piston between fluid reservoir and the second hydraulic pressure chamber so that the infused fluid in this fluid reservoir is delivered to patient by hydraulic fluid, and this flow selection mechanism is arranged to select the flow flowing to the hydraulic fluid of described second hydraulic pressure chamber from the first hydraulic pressure chamber to determine to carry from fluid reservoir to patient the flow of infused fluid with selectivity.Wherein, flow is the Fluid Volume passed through in the unit time, and Fluid Volume can calculate with volume.In some embodiments, fluid can comprise liquid medicine, such as, and insulin etc.When the fluid of infusion is insulin, the unit of flow can be unit/hour (unit/hour), wherein, unit/hour in unit and the substitution ratio of milliliter be 100:1, that is, 1 milliliter is 100 units.
[the first embodiment]
Fig. 1 is the sectional view comprising the fluid infusion device of hydraulic according to a kind of embodiment of this utility model.As shown in Figure 1, hydraulic of the present utility model can be used as an assembly of fluid infusion device, for applying driving force so that the infused fluid in the fluid reservoir of fluid infusion device is delivered to patient by hydraulic fluid to the second piston, infused fluid wherein can include, but is not limited to insulin, also can be the other drug fluids etc. such as analgesics.As shown in Figure 1, fluid infusion device 1 comprises: housing is (not shown, such as housing can be suitable for being worn on patient skin so that patient's portable use, or can be non-be worn on patient skin but be convenient to patient's portable use other arrange, such as make fluid infusion device be worn on belt, to be placed in pocket); Be positioned at housing and fluid reservoir 30 for holding infused fluid; Infusion assembly 40, is communicated with fluid reservoir fluid, for being delivered in patient body by the infused fluid in fluid reservoir 30; And hydraulic 100, this hydraulic is positioned at housing, applies driving force so that the infused fluid in fluid reservoir 30 is delivered to patient by hydraulic fluid.Infusion assembly 40 can by for thrusting pin 41 in patient body and silicagel pad 42 forms.
Hydraulic 100 comprises: the first hydraulic pressure chamber 11 accommodating hydraulic fluid, accommodate the second hydraulic pressure chamber 12 of hydraulic fluid, flow selection mechanism 14 between the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12, wherein, first hydraulic pressure chamber 11 provides being connected with external power supply of driving force by first piston 17, first hydraulic pressure chamber 11 is communicated with by flow selection mechanism 14 fluid with the second hydraulic pressure chamber 12, driving force is applied to the second piston 13 between fluid reservoir 30 and the second hydraulic pressure chamber 12 so that the infused fluid in this fluid reservoir 30 is delivered to patient by hydraulic fluid, flow selection mechanism 14 determines to carry from fluid reservoir to patient the flow of infused fluid with selectivity for the flow selecting to flow to the hydraulic fluid of described second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11.Such as, the first hydraulic pressure chamber 11 can be compression chamber, for accepting driving force from outside thus being promoted in next hydraulic pressure chamber (i.e. the second hydraulic pressure chamber 12) by hydraulic fluid wherein.Such as, second hydraulic pressure chamber 12 can be conduction chamber, after hydraulic fluid is pushed into the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11, driving force is applied to the second piston 13 between the fluid reservoir 30 and the second hydraulic pressure chamber 12 of fluid infusion device, thus the infused fluid in this fluid reservoir 30 is delivered to patient, this second piston 13 separates the hydraulic fluid in hydraulic pressure chamber and the infused fluid in fluid reservoir 30, and can move according to driving force.In alternative embodiments, the shell of the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12 can be interconnected, and is formed as matrix 10.In alternative embodiments, external power supply is the biasing member 18 be arranged in housing, and this biasing member 18 provides driving force by first piston 17 to the first hydraulic pressure chamber 11.Such as, alternatively, this biasing member 18 can be spring, but, those skilled in the art are to be understood that, external power supply involved by this utility model is not limited to this mode and provides driving force, and such as this power source also can be the power source (such as providing human body motive force etc.) from the housing external world, now accepts extraneous such as motive force etc. by first piston.
In further embodiment, flow selection mechanism 14 comprises restricted flow passage 141 and passages regulate device 142.Restricted flow passage 141 is between the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12 and be communicated with the second hydraulic pressure chamber 12 fluid by the first hydraulic pressure chamber 11, such as, hydraulic fluid flows to the second hydraulic pressure chamber 12 by this restricted flow passage from the first hydraulic pressure chamber 11, for ease of controlling the width in the space that hydraulic fluid can pass through in this restricted flow passage, this restricted flow passage 141 can be tapered channel.But the restricted flow passage 141 involved by present embodiment is not limited thereto, also can be the passage of other other shapes that the first hydraulic pressure chamber 11 can be communicated with the second hydraulic pressure chamber 12 fluid known in the art.Passages regulate device 142 is for regulating the width in the space that hydraulic fluid can pass through in restricted flow passage to select the flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11, preferably, this passages regulate device 142 can be removable plunger, and this removable plunger is configured to be moved to block restricted flow passage 141 thus regulates the width in the space that hydraulic fluid can pass through in restricted flow passage 141.Alternatively, this removable plunger can comprise stopper head 144, at the knob 143 of tail end and the plunger arm 146 between stopper head 144 and knob 143, this stopper head 144 is the taper corresponding with restricted flow passage 141 or rounded nose, and knob 143 can be used for this removable plunger mobile makes it be pressed in restricted flow passage 141.Such as, corresponding helicitic texture is had between plunger arm 146 and matrix 10, this removable plunger is rotated by knob, it can be made to stretch in the first hydraulic pressure chamber 11, in press-in restricted flow passage 141, can control to select removable plunger to enter the length of the first hydraulic pressure chamber 11 by rotating, thus regulate the width in the gap between this stopper head and restricted flow passage 141, namely regulate the width in the space selecting hydraulic fluid to pass through, select the flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11.But the removable plunger involved by present embodiment is not limited to above-mentioned mode in rotary moving, such as, also can be pushed in restricted flow passage 141.When fluid infusion device works, biasing member 18 (such as power spring) promotes first piston 17 and moves to the direction of the first hydraulic pressure chamber 11, compresses and promote hydraulic fluid to enter the second hydraulic pressure chamber 12 by restricted flow passage 141 from the first hydraulic pressure chamber 11.Due to hydraulic fluid communication, inner pressure is equal everywhere, by the second hydraulic pressure chamber, namely the driving force that biasing member 18 provides conducts on the second piston 13 by hydraulic fluid, thus promotion the second piston 13 moves to the direction of fluid reservoir 30, is entered in patient body by infused fluid (such as insulin) infusion in fluid reservoir 30.Like this, select the flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11 by regulating fluid passes through in restricted flow passage 141 space size, and then the flow carrying infused fluid from fluid reservoir to patient can be determined by selectivity.
In further embodiment, flow selection mechanism 14 also comprises bolus quantities injection mechanism 15 and accommodates the 3rd hydraulic pressure chamber 16 of hydraulic fluid.This bolus quantities injection mechanism 15 is for applying pressure to be applied for the driving force of bolus quantities injection to the second piston 13 directly to the hydraulic fluid in the second hydraulic pressure chamber 12, preferably, this bolus quantities injection mechanism 15 can be positioned at the side (such as relative with the second piston 13 one end) of the second hydraulic pressure chamber 12 and be connected with the second hydraulic pressure chamber 12.3rd hydraulic pressure chamber 16 is communicated with the second hydraulic pressure chamber 12 fluid, and for supplementing the hydraulic fluid in the second hydraulic pressure chamber after bolus quantities injection, such as the shell of the 3rd hydraulic pressure chamber 16 also can be connected with the shell of the first hydraulic pressure chamber 11 with the second hydraulic pressure chamber 12.Preferably, one end of the 3rd hydraulic pressure chamber 16 is communicated with the second hydraulic pressure chamber 12 fluid by check valve 161, and the other end is communicated with atmospheric environment by the 3rd piston 162.
Such as, bolus quantities injection mechanism 15 can comprise injection button 151 and bolus quantities injecting cavity 152, is all positioned at one end that the second hydraulic pressure chamber 12 is relative with the second piston 13.Wherein, in injection button 151, can spring be comprised, accept extraneous power be pressed lower after, can set back under the action of the spring, bolus quantities injecting cavity 152 can be connected with the second hydraulic pressure chamber, such as, preferably link into an integrated entity.Extraneous power is subject to when being depressed on button 151, hydraulic fluid in bolus quantities injecting cavity 152 is pushed to the second hydraulic pressure chamber 12, hydraulic fluid in bolus quantities injecting cavity 152 can directly be drained, therefore these hydraulic fluids move to the direction of fluid reservoir 30, the driving force second piston 13 being applied for bolus quantities injection moves to the direction of fluid reservoir 30 to promote the second piston 13, thus realizes bolus quantities injection.When button 151 is released, button 151 is resetted by rebounding under the action of the spring, now because the hydraulic fluid in bolus quantities injecting cavity 152 is drained, hydraulic fluid can directly suck from the second hydraulic pressure chamber 12 by the negative pressure that button 151 resets and produces, therefore second hydraulic pressure chamber 12 also produces negative pressure, in the 3rd hydraulic pressure chamber 16, sucked the hydraulic fluid of equivalent by check valve, supplement the hydraulic fluid flow volume siphoned away by bolus quantities injecting cavity 152 in the second hydraulic pressure chamber 12.Usually, often press shot button 151 and can complete a bolus quantities injection.Alternatively, the amount of bolus quantities injection, depending on patient's real needs, often presses shot button 151 and carries out a least unit injection, repeatedly presses button 151 and can complete a bolus quantities injection.
But hydraulic of the present utility model is not limited to comprise bolus quantities injection mechanism and the 3rd hydraulic pressure chamber, in other embodiments, also visual patient need abandon bolus quantities function of injection, omit bolus quantities injection mechanism and the 3rd hydraulic pressure chamber.
In addition, bolus quantities injection mechanism involved by this utility model is also not limited to above-mentioned structure, such as, also only can comprise simple piston structure or other known in the artly accept extraneous power to execute stressed structure to the hydraulic fluid in the second hydraulic pressure chamber 12; Such as also can not comprise bolus quantities injecting cavity 152, when bolus quantities injection mechanism accepts extraneous power after the hydraulic fluid applying pressure in the second hydraulic pressure chamber 12, when bolus quantities injection mechanism resets, can directly by negative pressure from the 3rd hydraulic pressure chamber 16 inhalant liquid hydraulic fluid with supplement the second hydraulic pressure chamber 12, etc.
In above-mentioned embodiment, describe a kind of implementation of the flow selection mechanism of hydraulic 100, in addition, the flow that other structures also can be adopted to make flow selection mechanism select to flow to the hydraulic fluid of the second hydraulic pressure chamber from the first hydraulic pressure chamber determines to carry from fluid reservoir to patient the flow of infused fluid with selectivity.Below, embodiment like this is described.
[the second embodiment]
Fig. 2 is the sectional view comprising the fluid infusion device of hydraulic according to the another kind of embodiment of this utility model; Fig. 3 is the perspective view of the fluid infusion device shown in Fig. 2.As shown in Figures 2 and 3, this structure comprising the fluid infusion device of hydraulic is roughly the same with the structure comprising the fluid infusion device of hydraulic of the first embodiment, and difference is the restricted flow passage 141 that instead of with restricted flow passage 145 in present embodiment in the first embodiment.
The restricted flow passage 145 that flow selection mechanism 14 in present embodiment comprises can be the multiple through holes on the partition between the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12, can close the part in multiple through hole thus regulate the width in the space that hydraulic fluid can pass through in restricted flow passage by mobile removable plunger.
When fluid infusion device works, hydraulic fluid enters the second hydraulic pressure chamber 12 by the first hydraulic pressure chamber 11, partition between the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12 is provided with multiple through hole, the shape of through hole and size can be different, when hydraulic fluid flows through through hole, flow can be slack-off, and therefore the combination of the through hole of difform through hole or varying number has different restriction regulating actions to the flow flowing through hydraulic fluid.Similar with the structure of the removable plunger in Fig. 1, removable plunger in Fig. 2 also can comprise the knob 143 of tail end and the plunger arm 146 between stopper head 144 and knob 143, corresponding helicitic texture is had between this plunger arm 146 and matrix 10, rotating this removable plunger by knob can make it stretch in the first hydraulic pressure chamber 11, namely, removable plunger can be selected to enter the length of the first hydraulic pressure chamber 11 by rotating, thus shelter from the through hole of varying number, thus form the different flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11.Like this, by selecting the number of turns of such as rotary knob, the different flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11 can be selected, determine with final selectivity the flow carrying infused fluid from fluid reservoir to patient.
[the 3rd embodiment]
Fig. 4 is the sectional view comprising the fluid infusion device of hydraulic according to another embodiment of this utility model; Fig. 5 A and Fig. 5 B is respectively unlatching, the closedown schematic diagram of the channel selecting mechanism in the hydraulic shown in Fig. 4; Fig. 6 is the schematic appearance of the fluid infusion device shown in Fig. 4; Fig. 7 is the perspective view of the fluid infusion device shown in Fig. 4.As shown in Figures 4 to 7, this structure comprising the fluid infusion device of hydraulic is roughly the same with the structure comprising the fluid infusion device of hydraulic of the first embodiment, and difference is mainly that the flow selection mechanism in hydraulic is different.
In the present embodiment, the flow selection mechanism 24 of hydraulic 200 can comprise at least two restricted flow passages (such as 3 restricted flow passages 2411,2412,2413) and the channel selecting mechanism 242 for optionally opening or close the partial throttle passage in these restricted flow passages that are communicated with the second hydraulic pressure chamber 12 fluid between the first hydraulic pressure chamber 11 and the second hydraulic pressure chamber 12 and by the first hydraulic pressure chamber 11.But the restricted flow passage involved by present embodiment is not limited to 3, may be selected to be 2,4 or more, can adjust the requirement of different infusion of insulin flows according to different patient.
As shown in Fig. 4, Fig. 5 A, Fig. 5 B, Fig. 6 and Fig. 7, one of them restricted flow passage 2411 is selected to be example, known: channel selecting mechanism 242 can comprise: mechanism body 2421, be connected with restricted flow passage and have the groove 2422 (such as spherical) corresponding with this restricted flow passage, this groove 2422 is connected with corresponding restricted flow passage 2411; Be covered in the barrier film 2423 (being such as silica gel thin film) above groove 2422; And the button 2424 be positioned at above barrier film 2423, this button 2424 is provided with the projection 2425 corresponding with groove, and is arranged to be pressed to make protruding 2425 to be pressed into together with barrier film 2423 in groove 2422 to block the flowing flowing through the hydraulic fluid of restricted flow passage 2411.As shown in Fig. 4 and Fig. 5 A, Fig. 5 B, aforementioned mechanism body and groove, barrier film, projection etc. is provided with for each restricted flow passage, the mechanism body be connected with each restricted flow passage such as can be integrally formed and as a wholely also can to arrange respectively, and button, groove, barrier film and projection are separately positioned on each corresponding restricted flow passage.Preferably, each restricted flow passage can be set to the flow difference of the hydraulic fluid flowed in each restricted flow passage.Such as, the diameter of each restricted flow passage is different.But the channel selecting mechanism 242 involved by present embodiment is not limited thereto, also open or closed portion restricted flow passage by other way selection, etc.
When fluid infusion device works, biasing member 18 promotes first piston 17 and moves to the direction of the first hydraulic pressure chamber 11, compresses and promote hydraulic fluid to enter the second hydraulic pressure chamber 12 by multiple restricted flow passage 2411,2412,2413 from the first hydraulic pressure chamber 11.Such as, multiple restricted flow passage 2411,2412,2413 also can be connected, and hydraulic fluid can pass multiple restricted flow passage 2411,2412,2413 successively to realize deceleration repeatedly.Restricted flow passage is also provided with channel selecting mechanism 242, closedown or the unlatching of this restricted flow passage can be controlled by the corresponding button pressed or each restricted flow passage that resets is corresponding.When a select button of correspondence is activated, the flow that in this restricted flow passage, hydraulic fluid passes through, is hydraulic fluid enters the second hydraulic pressure chamber 12 flow from the first hydraulic pressure chamber 11.When multiple select buttons of correspondence are activated, the amount sum that in corresponding multiple restricted flow passages, hydraulic fluid passes through, is hydraulic fluid enters the second hydraulic pressure chamber 12 total amount from the first hydraulic pressure chamber 11.Namely the driving force that biasing member 18 provides conducts on the second piston 13 by hydraulic fluid, thus promotion the second piston 13 moves to the direction of fluid reservoir 30, is entered in patient body by infused fluid (such as insulin) infusion in fluid reservoir 30.By selecting the flow of the hydraulic fluid flowing to the second hydraulic pressure chamber 12 from the first hydraulic pressure chamber 11, just the flow carrying infused fluid from fluid reservoir to patient can be determined by selectivity.
As shown in Figure 4, such as, bolus quantities injection mechanism 15 also can in one end between restricted flow passage and the second piston of the second hydraulic pressure chamber 12.
[the 4th embodiment]
Additionally provide the method for a kind of manufacture for the hydraulic of fluid infusion device herein.Fig. 8 is the method schematic diagram for the manufacture of hydraulic.As shown in Figure 8, the method comprises: step S101, provides the first hydraulic pressure chamber and the second hydraulic pressure chamber that accommodate hydraulic fluid, and wherein, the first hydraulic pressure chamber is connected with providing the external power supply of driving force by first piston; Step S102, flow selection mechanism is provided, first hydraulic pressure chamber is communicated with by this flow selection mechanism fluid with the second hydraulic pressure chamber, driving force is applied to the second piston between fluid reservoir and the second hydraulic pressure chamber so that the infused fluid in this fluid reservoir is delivered to patient by hydraulic fluid, and this flow selection mechanism is arranged to can select to flow to the flow of the hydraulic fluid of described second hydraulic pressure chamber to select to determine to carry from fluid reservoir to patient the flow of infused fluid from the first hydraulic pressure chamber.
[the 5th embodiment]
Additionally provide a kind of method manufacturing fluid infusion device herein.Fig. 9 is the method schematic diagram for the manufacture of fluid infusion device.As shown in Figure 9, the method comprises: S201, provides housing; S202, provides and is positioned at housing and fluid reservoir for holding infused fluid; S203, provides the infusion assembly be communicated with fluid reservoir fluid, is arranged for by this infusion assembly and is delivered in patient body by the infused fluid in fluid reservoir; S204, provides hydraulic as above, and this hydraulic is positioned at housing, and driving force is applied to the second piston so that the infused fluid in this fluid reservoir is delivered to patient by the hydraulic fluid be arranged through by this hydraulic wherein.
It should be noted that; although each side of said apparatus, equipment and method etc. 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 utility model, 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 (11)
1., for a hydraulic for fluid infusion device, this fluid infusion device is used for carrying out administration to patient, and comprises fluid reservoir, and it is characterized in that, described hydraulic comprises:
First hydraulic pressure chamber, is connected with providing the external power supply of driving force by first piston, accommodates hydraulic fluid in described first hydraulic pressure chamber;
Second hydraulic pressure chamber, accommodates hydraulic fluid in described second hydraulic pressure chamber; And
Flow selection mechanism, described first hydraulic pressure chamber is communicated with by this flow selection mechanism fluid with described second hydraulic pressure chamber, described driving force is applied to the second piston between described fluid reservoir and the second hydraulic pressure chamber so that the infused fluid in this fluid reservoir is delivered to patient by described hydraulic fluid, and described flow selection mechanism is arranged to select the flow flowing to the hydraulic fluid of described second hydraulic pressure chamber from described first hydraulic pressure chamber to determine to carry from described fluid reservoir to described patient the flow of infused fluid with selectivity.
2. hydraulic according to claim 1, is characterized in that, described flow selection mechanism comprises:
Restricted flow passage, is communicated with described first hydraulic pressure chamber with the second hydraulic pressure chamber fluid;
Passages regulate device, for regulating space that described in described restricted flow passage, hydraulic fluid can pass through to select the flow of the hydraulic fluid flowing to described second hydraulic pressure chamber from described first hydraulic pressure chamber.
3. hydraulic according to claim 2, is characterized in that,
Described passages regulate device is removable plunger, by this removable plunger mobile to regulate the space that described in restricted flow passage, hydraulic fluid can pass through.
4. hydraulic according to claim 3, is characterized in that,
Described restricted flow passage is tapered channel, and the stopper head of described removable plunger is the taper corresponding with this tapered channel or rounded nose, by mobile described removable plunger to regulate the gap between this stopper head and described restricted flow passage.
5. hydraulic according to claim 3, is characterized in that,
Described restricted flow passage is be arranged at the multiple through holes on the partition between described first hydraulic pressure chamber and described second hydraulic pressure chamber, regulates the space that described in described restricted flow passage, hydraulic fluid can pass through by mobile described removable plunger with the part closed in described multiple through hole.
6. hydraulic according to claim 1, is characterized in that, described flow selection mechanism comprises:
At least two restricted flow passages, are communicated with described first hydraulic pressure chamber with the second hydraulic pressure chamber fluid;
Channel selecting mechanism, for the partial throttle passage optionally opened or at least two restricted flow passages described in closedown.
7. hydraulic according to claim 6, is characterized in that, described channel selecting mechanism comprises:
Mechanism body, be connected with each in described at least two restricted flow passages and have the groove corresponding with each restricted flow passage, this groove is connected with corresponding restricted flow passage;
Be covered in the barrier film above described groove;
Be positioned at the button of described diaphragm, described button is provided with the projection corresponding with groove, and is arranged to make described projection be pressed into together with barrier film in described groove to block the flowing flowing through the hydraulic fluid of corresponding restricted flow passage when pressing button.
8. hydraulic according to claim 7, is characterized in that, the flow that described at least two restricted flow passages are set to the hydraulic fluid flowed in these at least two restricted flow passages is different.
9. hydraulic as claimed in any of claims 1 to 8, is characterized in that, described hydraulic also comprises:
Bolus quantities injection mechanism, for applying pressure to be applied for the driving force of bolus quantities injection to described second piston to the hydraulic fluid in the second hydraulic pressure chamber; And
Accommodate the 3rd hydraulic pressure chamber of hydraulic fluid, the 3rd hydraulic pressure chamber is communicated with described second hydraulic pressure chamber fluid, for supplementing the hydraulic fluid in the second hydraulic pressure chamber.
10. hydraulic according to claim 9, is characterized in that,
One end of described 3rd hydraulic pressure chamber is communicated with described second hydraulic pressure chamber fluid by check valve, and the other end is communicated with atmospheric environment by the 3rd piston,
Described bolus quantities injection mechanism is positioned at the side of described second hydraulic pressure chamber and is connected with described second hydraulic pressure chamber.
11. 1 kinds for the fluid infusion device of carrying out administration to patient, is characterized in that, comprising:
Housing;
Fluid reservoir, is positioned at described housing and for holding infused fluid;
Infusion assembly, is communicated with described fluid reservoir fluid, for being delivered in patient body by the infused fluid in described fluid reservoir; And
Hydraulic as claimed in any of claims 1 to 10, described hydraulic is positioned at described housing, by hydraulic fluid, driving force is applied to the second piston so that the infused fluid in this fluid reservoir is delivered to patient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344302.0U CN204699169U (en) | 2015-05-25 | 2015-05-25 | Hydraulic and fluid infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344302.0U CN204699169U (en) | 2015-05-25 | 2015-05-25 | Hydraulic and fluid infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204699169U true CN204699169U (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520344302.0U Expired - Fee Related CN204699169U (en) | 2015-05-25 | 2015-05-25 | Hydraulic and fluid infusion device |
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| Country | Link |
|---|---|
| CN (1) | CN204699169U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267464A (en) * | 2015-05-25 | 2017-01-04 | 美敦力公司 | Hydraulic, fluid infusion device and manufacture method thereof |
| CN106902419A (en) * | 2015-12-23 | 2017-06-30 | 美敦力公司 | For the fluid infusion apparatus being administered to patient |
-
2015
- 2015-05-25 CN CN201520344302.0U patent/CN204699169U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267464A (en) * | 2015-05-25 | 2017-01-04 | 美敦力公司 | Hydraulic, fluid infusion device and manufacture method thereof |
| CN106902419A (en) * | 2015-12-23 | 2017-06-30 | 美敦力公司 | For the fluid infusion apparatus being administered to patient |
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Granted publication date: 20151014 Termination date: 20210525 |