CN204864339U - Fluid infusion device - Google Patents
Fluid infusion device Download PDFInfo
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- CN204864339U CN204864339U CN201520342030.0U CN201520342030U CN204864339U CN 204864339 U CN204864339 U CN 204864339U CN 201520342030 U CN201520342030 U CN 201520342030U CN 204864339 U CN204864339 U CN 204864339U
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Abstract
The utility model provides a carry out the fluid infusion device that doses to the patient, the device includes: the reservoir has and is used for saving infusion fluidic arc cavity, the pole is injected to the arc, configures the pitch arc direction that can follow the arc cavity into and removes in the arc cavity, the injection button, the ration displacement mechanism is injected the pole operability with the arc and is connected, configures into can promote the arc inject the pole remove the predetermined distance in the arc cavity when injection button is operated to fluid transport with predetermined quantity in the reservoir. Implement above -mentioned device, can reduce the whole volume of device, again the quantity of flow control infusion accurately.
Description
Technical field
This utility model relates to fluid infusion field, in particular to a kind of fluid infusion apparatus for carrying out administration to patient.
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 congenital diseases by 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.
The existing insulin pump being suitable for type 2 diabetes mellitus patient has electronic type and mechanical type two kinds of insulin pumps, and two kinds of insulin pumps all need optimized integration amount injection simultaneously and bolus quantities to inject two kinds of infusion of insulin modes.Electronic type insulin pump often complex structure, weight is comparatively large, and expensive, and the feasibility can popularizing use is not high.But existing mechanical insulin pump configuration generally adopts straight line stepping type to control bolus quantities injection volume, but such control mode adds the length dimension of insulin pump, add overall volume, be unfavorable for the portable use of insulin pump.Under the prerequisite not increasing insulin pump overall volume, existing insulin pump structure is difficult to accurately control the injection volume of bolus quantities per injection.
Summary of the invention
For solving above-mentioned technical problem, this utility model provides a kind of fluid infusion apparatus and manufacture method thereof for carrying out administration to patient, this fluid infusion apparatus has reservoir, injects bar and can be promoted arc when injection button operates inject bar at arc-shaped cavity indoor moving preset distance in reservoir along the arc of arc direction movement, thus by the quantitative displacement mechanism of the fluid of predetermined quantity in reservoir output, the overall volume of infusion device can either be reduced, accurately can also control the quantity of fluid infusion.
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, has the arc chambers for storing infused fluid; Arc injects bar, and being configured to can along the arc direction of described arc chambers at described arc-shaped cavity indoor moving; Injection button; Quantitative displacement mechanism, injects bar operability with described arc and is connected, and is configured to be promoted described arc when described injection button operates and injects bar at described arc-shaped cavity indoor moving preset distance, thus exported by the fluid of predetermined quantity in described reservoir.
In some embodiments, described quantitative displacement mechanism can comprise: driving lever, injects bar operability and engages and described arc can be driven to inject bar and be synchronized with the movement, have multiple first tooth with described arc; Tooth bar, contact with described injection button operability, the second tooth that there is curved body and be arranged on described curved body and the 3rd tooth, described second tooth and the 3rd tooth are configured to coordinate to be operated the number of teeth of driving lever movement described in limit at described injection button with described multiple first tooth; Energy storage component, is connected with described driving lever operability, store mechanical energy and be configured to apply driving force to described driving lever and move the predetermined number of teeth to make described driving lever.
In some embodiments, the second tooth of described tooth bar can be arranged at the side of described curved body, is configured to allow when described injection button is pressed described driving lever under the driving force of described energy storage component, cross over described second tooth and moves the predetermined number of teeth; 3rd tooth of described tooth bar can be arranged at the opposite side of described curved body, is configured to locate described driving lever with the number of teeth limiting described driving lever movement when described injection button is released.
Described device also comprises base and housing in some embodiments, and wherein, described reservoir, described quantitative displacement mechanism can be installed in the space that described base and described housing limit.
In some embodiments, the stem portion that described driving lever can have curved body and extend to the outside of described housing from described curved body, wherein, the lateral surface of the curved body of described driving lever is evenly distributed with described multiple first tooth, one lateral tooth flank of described first tooth is the flank of tooth mated with described second tooth, the opposite side flank of tooth is the flank of tooth mated with described 3rd tooth, and the stem portion of described driving lever is configured to be struck described curved body is moved along arc direction.
In some embodiments, the side of the curved body of described driving lever can have the conjugate foramen that the described arc of assembling injects the installation portion of bar.
In some embodiments, the stem portion of described driving lever can extend to the outside of described housing from the opening of described housing, and can be struck in described opening.
In some embodiments, the stroke that the stem portion of described driving lever is stirred can be equal with the length of described arc chambers.
In some embodiments, described energy storage component can comprise coil tension spring.
In some embodiments, described coil tension spring can be positioned in the arc groove of described base, one end of described coil tension spring is installed on the end face of described arc groove, the curved body that the other end is installed on described driving lever is injected the contrary side of bar with described arc.
In some embodiments, the stem portion that described driving lever can have circular body and extend from the outside of the circumferential described housing of described circular body, wherein, the first area of the circular body of described driving lever is evenly distributed with the first tooth that multiple and described second tooth mates, second area is evenly distributed with the first tooth that multiple and described 3rd tooth mates, and the stem portion of described driving lever is configured to be struck described circular body is circumferentially moved.
In some embodiments, described first area and described second area are symmetrical and have the first tooth of equal densities and quantity about the diameter shaft of described circular body.
In some embodiments, the stem portion of described driving lever can have staircase structural model, described arc injects the installation portion that bar has the arc body of rod and extends along the radial direction of the described arc body of rod, described installation portion has the recess extended along described radial direction, wherein, the high portion of the staircase structural model of described stem portion embeds the recess that described arc injects bar and engages so that described driving lever is injected bar with described arc.
In some embodiments, the stem portion of described driving lever can extend to the outside of described housing from the opening of described housing and described base joint, and can have the slide rail for described stem portion movement on described base.
In some embodiments, described energy storage component can comprise torsion spring.
In some embodiments, described torsion spring can be positioned in the circular groove of described base, and one end of described torsion spring is installed on described base, and the other end is installed on the circular body of described driving lever.
In some embodiments, described tooth bar can have the keyway engaged with the cylindrical parts on described base, and can rotate in the length range of described keyway.
In some embodiments, described housing can be provided with the scale corresponding with described predetermined quantity in the lift area that described driving lever is stirred.
Fluid infusion apparatus and manufacture method thereof for carrying out administration to patient that this utility model embodiment provides, by by the chamber of reservoir with inject bar and be designed to arcuate structure, the overall dimensions of infusion device can be reduced, make infusion device compact as much as possible, be convenient to user and dress under several scenes; Further, by the quantitative displacement mechanism of various structures form and the cooperation of injection button, the injection volume that bolus quantities is injected accurately is controlled, simplify the setting up procedure of injection volume.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 2 a is the decomposition view of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 2 b is the enlarged diagram of the driving lever shown in Fig. 2 a;
Fig. 2 c is the enlarged diagram of the tooth bar shown in Fig. 2 a;
Fig. 3 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 3 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 3 c is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 4 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 4 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 4 c is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment;
Fig. 5 is the assembling schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;
Fig. 6 a is the decomposition view 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 driving lever shown in Fig. 6 a;
Fig. 6 c is the method schematic diagram of the tooth bar shown in Fig. 6 a;
Fig. 7 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;
Fig. 7 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;
Fig. 8 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;
Fig. 8 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment;
Fig. 9 is the schematic flow sheet of the method manufacturing fluid infusion apparatus.
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 device can comprise reservoir, arc injects bar, injection button and quantitative displacement mechanism.Wherein, reservoir has the arc chambers storing infused fluid, and this arc chambers has certain radian, such as, and π/4, π/3, pi/2 etc.The storable fluid of arc chambers can comprise various different liquid etc.In some embodiments, the storable fluid of arc chambers comprises the therapeutic fluid medicine of such as insulin, analgesic and so on, and in such embodiment, arc chambers can be arc medicine bag.Arc injects the rod-like structure that bar can have radian corresponding to arc chambers, this shaft-like mechanism can arrange piston (such as in one end of arc-shaped cavity indoor moving, silica gel plug), thus can move along the arc direction of arc chambers and the fluid in arc chambers can not be allowed to flow out, the other end can be connected with quantitative displacement mechanism, when injection button is operated (such as, user injection button is pressed or the operation such as release time) arc direction be pushed along arc chambers moves preset distance, thus the fluid of predetermined quantity corresponding for this preset distance in reservoir is exported.Wherein, the above-mentioned predetermined quantity of fluid can be injected bar by the internal diameter of arc chambers and arc and jointly determined at the preset distance of arc-shaped cavity indoor moving.
[the first embodiment]
Fig. 1 is the assembling schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 2 a is the decomposition view of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 2 b is the enlarged diagram of the driving lever shown in Fig. 2 a; Fig. 2 c is the enlarged diagram of the tooth bar shown in Fig. 2 a; Fig. 3 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 3 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 3 c is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 4 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 4 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment; Fig. 4 c is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model first embodiment.
As shown in Fig. 1 and Fig. 2 a to Fig. 2 c, fluid infusion apparatus 100 can comprise reservoir 101, arc injects bar 102, injection button 103, driving lever 104, tooth bar 105, energy storage component (such as, coil tension spring etc.) 106, base 107 and housing 108.Wherein, reservoir 101, driving lever 104, tooth bar 105, energy storage component 106 can be installed on base 107 and be accommodated in housing 108 (such as, the cover case of covering base 107).Reservoir 101 has the arc chambers 1011 of storage infused fluid (such as, the liquid of such as insulin and so on), and arc injects bar 102 can be mobile in arc chambers 1011 along the arc direction of arc chambers 1011.
Driving lever 104, tooth bar 105 and energy storage component 106 can form quantitative displacement mechanism, operated (such as at injection button 103, being pressed and releasing operation) time promotes arc and injects bar 102 in arc chambers 1011 mobile preset distance is (such as, the number of teeth preset), thus the fluid of predetermined quantity corresponding for this preset distance in reservoir 101 is exported, realize the bolus quantities injection of exact dose.
Injection button 103 can contact with the side surface operability of the side, tooth 1051 place of tooth bar 105, such as, contacts and presses tooth bar 105 1 side surface, do not contact when injection button 103 is released with tooth bar 105 when injection button 103 is pressed.Variform two teeth 1051 and 1052 that tooth bar 105 has curved body 1053 and is arranged on this curved body 1053, curved body 1053 also has a keyway 1054 of the column 1071 of engaging base 107, the keyway 1054 of tooth bar 105 engages with described column 1071 this tooth bar 105 can be rotated around column 1071.Two teeth 1051 and 1052 are separately positioned on the both sides of curved body 1053, wherein, from the direction in the face of Fig. 2 a, the left and right tooth face of the tooth 1051 in left side is symmetrical, can be used for the motion temporarily intercepting driving lever 104, the right flank of the tooth 1052 on right side is pawl shape, can be used for driving lever 104 to locate.Two teeth 1051 and 1052 of tooth bar 105 can respectively with multiple teeth of driving lever 104 (such as, be more than or equal to two teeth) the left and right sides flank of tooth coordinate to be moved the predetermined number of teeth at injection button 103 by operation limit driving lever 104, such as, the tooth 1051 allowing driving lever 104 to cross over tooth bar 105 under the driving force of energy storage component 106 when injection button 103 is pressed moves 1 tooth, tooth on driving lever 104 is located by tooth 1052 when injection button 103 is released, thus the tooth leap tooth 1051 on restriction driving lever 104 continues mobile, the distance that the arc be synchronized with the movement with driving lever 104 injects bar 102 movement is limited by the number of teeth of restriction driving lever 104 movement.
Driving lever 104 and arc are injected bar 102 and are engaged and arc can be driven to inject bar 102 and be synchronized with the movement, such as, receive by the conjugate foramen 1041 on driving lever 104 installation portion 1021 (such as, protuberance or cylindrical portion etc.) that arc injects on bar 102 to engage.Driving lever 104 can have curved body 1042 and from this curved body 1042 to the stem portion 1043 that the outside of housing 108 extends.Wherein, the lateral surface of the curved body 1042 of driving lever 104 is evenly distributed with multiple tooth 1044, one lateral tooth flank of each tooth 1044 (such as, right flank) be the flank of tooth mated with the symmetrical flank of tooth of the tooth 1051 of tooth bar 105, the opposite side flank of tooth (such as, left flank) is the pawl flank of tooth mated with the pawl flank of tooth of tooth 1052.
Injection button 103 can be designed to can contact with the side surface of the left side tooth 1051 of tooth bar 105.When pressing injection button 103 (such as, direction along below arrow indication in Fig. 3 a) time, the side surface of the left side tooth 1051 of injection button 103 contact arc tooth bar 105, press tooth bar 105 to rotate clockwise, the left side tooth 1051 turning to tooth bar 105 as shown in Figure 3 a contacts the bottom between two teeth of driving lever 104, the releasing right flank of right side tooth 1052 of tooth bar 105 engages with the left flank of the tooth 1044 of driving lever 104, also just relieves the location of tooth bar 105 pairs of driving levers 104.Under the state shown in Fig. 3 a, tooth 1044 on driving lever 104 can clockwise (such as under the driving force of energy storage component 106, along the direction shown in upper arrow in Fig. 3 a) rotate, make the left side tooth 1051 of tooth bar 105 can cross 1 tooth of driving lever 104, then injection button 103 is discharged (such as, direction along below arrow indication in Fig. 3 b), tooth bar 105 is made to rotate counterclockwise state as shown in Figure 3 b, driving lever 104 continues to rotate clockwise under the driving force of energy storage component 106, the right side tooth 1052 of tooth bar 105 enters between two teeth of driving lever 104, along with driving lever 104 continue rotate clockwise and the rotating counterclockwise of tooth bar 105, the tooth of driving lever 104 is blocked by the right side tooth 1052 of tooth bar 105, as shown in Figure 3 c, realize the location to driving lever 104, restriction driving lever 104 continues mobile.The tooth 1044 of driving lever 104 has rotated clockwise the distance of 1 tooth, stem portion 1043 also moves the distance of 1 tooth thereupon, inject bar 102 distance that also moving 1 tooth is corresponding in arc chambers 1011 with the arc that driving lever 104 is synchronized with the movement, thus the infusion orifice 1012 of the fluid of this distance respective amount from reservoir 101 is released.
Because the tooth 1044 on driving lever 104 is for being uniformly distributed, often presses shot button 103 and driving lever just can be made to move the distance of 1 tooth, driving arc to inject bar 102 and the fluid of interior for arc chambers 1,011 1 tooth respective amount is exported.Often press the fluid that shot button 103 can be considered injection 1 unit, accurately can be set the total amount of injecting fluid by the number of times pressing injection button 103, the injection operation of very convenient user.
The stem portion 1043 of driving lever 104 can stretch out from the opening 1081 of housing 108, and can be struck in opening 1081, and the length of opening 1081 can be equal with the stroke that stem portion 1043 is stirred.The stem portion 1043 of driving lever 104 move can drive arc inject bar 102 (such as, by arc chambers inject mouth) arcuately the arc direction of chamber 1011 move in the length range of arc chambers 1011.The length of arc chambers 1011 can be set to equal with the stroke of stem portion 1043, and under such a condition, stem portion 1043 is struck one end of opening 1081, the state being exactly fluid evacuation in arc chambers 1011 or filling up.Further, can to arrange in opening 1081 both sides of housing 108 and the stem portion 1043 of driving lever 104 moves scale corresponding to amount of fluid corresponding to 1 tooth.Under such a condition, the distance of driving lever movement can be obtained according to scale, and need not the compression number of injection button 103 be counted, further facilitate the operation of user.
Reservoir 101, driving lever 104, tooth bar 105, energy storage component 106 can be installed on base 107 and be accommodated in housing 108.Such as, reservoir 101 can be directly fixed on base 107, driving lever 104 to coordinate with the installation portion on base 107 by junction surface to be installed, tooth bar 105 is installed on the column 1071 of base 107 by the keyway 1054 on curved body 1053 and installs, energy storage component 106 (such as, coil tension spring etc.) can be arranged on base 107 arc groove 1072 in, its one end is installed on the end face of arc groove 1072, what the other end was installed on driving lever 104 injects opposite end that bar 102 engages (such as with arc, the cylindricality end 1045 of driving lever 104 can be installed on), and energy storage component 106 can be compressed and be discharged in arc groove 1072, promote driving lever 104 to move.Be installed on the reservoir 101 of base 107, driving lever 104, tooth bar 105 and energy storage component 106 can be accommodated in the cover case 108 of covering base 107.
Described above is the process that the fluid of predetermined quantity in reservoir 101 exports by the cooperation of injecting the parts such as bar 102 and injection button 103 by driving lever 104, tooth bar 105, energy storage component 106, arc.The cooperation of being injected the parts such as bar 102 by driving lever 104, tooth bar 105 and arc can also be realized to reservoir 101 fill fluid.As Fig. 4 a, shown in Fig. 4 b and Fig. 4 c, stir the stem portion 1043 of driving lever 104 counterclockwise, energy storage component (such as, coil tension spring) 106 to be compressed, memory action power, from the direction of Graph-Oriented 4, the right flank of the tooth 1044 on driving lever 104 contacts with the left flank of right side tooth 1052 with the left side tooth 1051 of tooth bar 105 respectively repeatedly, tooth bar 105 can swing repeatedly around rotating shaft, rotating shaft can be the column 1071 of base 107, the curved body 1053 of tooth bar 105 has the keyway 1054 engaging column 1071, tooth bar 105 can rotate in the length range of keyway 1054.But the swing repeatedly of tooth bar 105, can not stop that counterclockwise (such as, along the direction shown in Fig. 4 a to Fig. 4 c upper arrow) of driving lever 104 rotates.Rotating counterclockwise of driving lever 104 can drive arc to inject bar 102 movement counterclockwise in arc chambers 1011, makes to form negative pressure in arc chambers 1011, sucks fluid by the input port 1013 of reservoir 101.
In some other embodiment, reservoir 101 can be set to disposable discardable parts, not need to stir driving lever 104 counterclockwise fluid to be sucked repeatedly the process of arc chambers 1011.Arc chambers 1011 can be the medicine bag directly filling fluid, can be communicated with by penetrating member with infusion orifice 1012 fluid of reservoir 101, drives arc to inject bar 102 carry out infusion by driving lever 104.
[the second embodiment]
Fig. 5 is the assembling schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment; Fig. 6 a is the decomposition view 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 driving lever shown in Fig. 6 a; 6c is the method schematic diagram of the tooth bar shown in Fig. 6 a; Fig. 7 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment; Fig. 7 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment; Fig. 8 a is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment; Fig. 8 b is the mode of operation schematic diagram of the fluid infusion apparatus for carrying out administration to patient according to this utility model second embodiment.
As shown in Fig. 5 and Fig. 6 a to Fig. 6 c, fluid infusion apparatus 200 can comprise reservoir 201, arc injects bar 202, injection button 203, driving lever 204, tooth bar 205, energy storage component (such as, torsion spring etc.) 206 and base 207.Reservoir 201, driving lever 204, tooth bar 205, energy storage component 206 can be installed on base 207, and can be accommodated in housing (not shown).Reservoir 201 has the arc chambers 2011 of storage infused fluid (such as, the liquid of such as insulin and so on), and arc injects bar 202 can be mobile in arc chambers 2011 along the arc direction of arc chambers 2011.Wherein, arc injects the installation portion 2022 that bar 202 can have the arc body of rod 2021 and extend from the radial direction of the arc body of rod 2021, and installation portion 2022 has the recess extended along radial direction, can be used for engaging with driving lever 204.
Driving lever 204, tooth bar 205 and energy storage component 206 can form quantitative displacement mechanism, operated (such as at injection button 203, being pressed and releasing operation) time promotes arc and injects bar 202 in arc chambers 2011 mobile preset distance is (such as, the number of teeth preset), thus the fluid of predetermined quantity corresponding for this preset distance in reservoir 201 is exported, realize the bolus quantities injection of exact dose.
Tooth bar 205 can contact with injection button 203 operability, such as, contacts when injection button 203 is pressed with tooth bar 205, does not contact when injection button 203 is released with tooth bar 205.Variform two teeth 2051 and 2052 that tooth bar 205 has curved body 2053 and is arranged on this curved body, curved body 2053 is also respectively arranged with the keyway 2054 of two columns 2071 on engaging base 207 in the both sides near tooth 2051 and tooth 2052, tooth bar 205 can rotate in the length range of keyway 2054.Tooth 2051 and tooth 2052 are separately positioned on the both sides of curved body 2053, from the direction in the face of Fig. 6 a, the left and right tooth face of left side tooth 2051 is symmetrical, can be used for the motion temporarily intercepting driving lever 204, the right flank of right side tooth 2052 is pawl shape, can be used for driving lever 204 to locate, the movement of restriction driving lever 204.The left side tooth 2051 of tooth bar 205 and right side tooth 2052 can coordinate with the part tooth of driving lever 204 respectively and moved the predetermined number of teeth to operate limit driving lever 204 at injection button 203, such as, the left side tooth 2051 allowing driving lever 204 to cross over tooth bar 205 under the driving force of energy storage component 206 when injection button 203 is pressed moves 1 tooth, tooth on driving lever 204 is located by right side tooth 2052 when injection button 203 is released, thus the tooth leap left side tooth 2051 on restriction driving lever 204 continues mobile, the distance that the arc be synchronized with the movement with driving lever 204 injects bar 202 movement is limited by the number of teeth of restriction driving lever 204 movement.
The stem portion 2042 that driving lever 204 can have circular body 2041 and extend from the outside of the circumferential housing of circular body 2041, wherein, a region A of circular body 2041 is evenly distributed with the tooth 2043 that predetermined number is mated with the symmetrical flank of tooth of the left side tooth 2051 of tooth bar 205, also the tooth 2043 mated with the pawl flank of tooth of the right side tooth 2052 of tooth bar 205 is evenly distributed with about the axisymmetric region A ' of circular body diameter at the region A of circular body 2041, the flank of tooth is that sawtooth is barb-like, the density of the upper tooth 2043 of region A and region A ' is equal with quantity, concrete quantity and density are determined by the capacity of reservoir and the dosage of each precise hydrodynamics.
The stem portion 2042 of driving lever 204 has staircase structural model, and the high portion of this staircase structural model can embed the recess that arc injects the installation portion 2022 of bar 202, thus by driving lever 204 with inject bar 202 and engage.The installation portion 2022 that arc injects bar 202 also has circular hole 20221 at the virtual circle centre position of arch section, this circular hole 20221 can with the circular hole 20411 of the circle centre position of the circular body 2041 of driving lever 204 coaxial and same size, the column 2072 of base 207 can be mounted to coaxially, allow driving lever 204 and arc to inject bar 202 and rotate coaxially.
Injection button 203 can contact with the side surface operability of the left side tooth 2051 of tooth bar 205, such as, contacts and presses tooth bar 205 left-hand face, do not contact when injection button 203 is released with tooth bar 205 when injection button 203 is pressed.When pressing injection button 203, the left-hand face of tooth bar 205 is pressed, its length direction along keyway 2054 is rotated, as shown in Figure 7a, remove the right side tooth 2052 of tooth bar 205 to engage with the location of the tooth of the region A ' of driving lever 204, the left side tooth 2051 allowing the tooth in driving lever 204 region A to cross over tooth bar 205 under the driving force of energy storage component 206 moves 1 tooth, and the circular body 2041 of driving lever 204 moves the radian of 1 tooth clockwise simultaneously.When discharging injection button 203, driving lever 204 continues to rotate clockwise under the driving force of energy storage component 206, makes the right side tooth 2052 of tooth bar 205 catch on the tooth of the region A ' of driving lever 204, positions, as shown in Figure 7b to driving lever 204.Driving lever 204 has rotated clockwise the radian of 1 tooth, and drive is injected bar 202 with the arc of its coaxial rotation in arc chambers 2011, rotated distance corresponding to 1 tooth, thus is released by the infusion orifice of the fluid of this distance respective amount from reservoir 201.
Because the tooth on the region A of the circular body 2041 of driving lever 204 and region A ' distributes symmetrically, often pressing shot button 203 just can make driving lever move the distance of 1 tooth, drives arc to inject bar 202 and is exported by the fluid of interior for arc chambers 2,011 1 tooth respective amount.Often press the fluid that shot button 203 can be considered injection 1 unit, accurately can be set the total amount of injecting fluid by the number of times pressing injection button 203, the injection operation of very convenient user.Such as, the scale that injection button presses the amount of fluid that can inject at every turn can be set for driving lever is stirred on housing lift area.User can check the total amount of injection by scale.
The stem portion 2042 of driving lever 204 can extend to the outside of housing from the opening of housing and base 207 joint, user can stir stem portion 2042 from housing makes the circular body 2041 of driving lever 204 circumferentially move.And base 207 can arrange the slide rail 2073 of the lower curtate movement of the staircase structural model of user's stem portion 2042, such as, slide rail 2073 can with the surperficial forming station hierarchic structure of base 207, restriction stem portion 2042 slide stroke.The length of slide rail 2073 can be equal with the stroke that driving lever 204 is stirred.
Reservoir 201, energy storage component (such as, torsion spring) 206 can be installed on base 207.Such as, reservoir 201 can have installing component 2012 (such as, cylindrical parts), and this installing component 2012 can engage with the installing hole 2074 on base 207, and reservoir 201 is fixedly installed in base 207.Base can arrange circular groove 2075 for placing energy storage component 206, and one end of energy storage component 206 is installed on base, and the other end is installed on the circular body 2041 of driving lever 204.Base 207 also can arrange short distance slide rail 2076 and slide for injection button 203 short distance pressing.
Described above is the process that the fluid of predetermined quantity in reservoir 201 exports by the cooperation of injecting the parts such as bar 202 and injection button 203 by driving lever 204, tooth bar 205, energy storage component 206, arc.But the cooperation of being injected the parts such as bar 202 by driving lever 204, tooth bar 205 and arc can also complete fluid input.
As shown in Figure 8 a, fluid infusion apparatus 200 is in original state, and arc injects the bottom that bar is positioned at arc chambers, does not have fluid in arc chambers, and infusion orifice and the input port of reservoir are all in closed condition.Then the stem portion 2042 of driving lever 204 is stirred counterclockwise, the right side tooth 2052 of tooth bar 205 allows the tooth of region A and A ' of the circular body 2041 of driving lever 204 to rotate counterclockwise, driving lever 204 toggles it to the state shown in Fig. 8 b, then the stem portion 2042 of driving lever 204 is discharged, the right side tooth 2052 of tooth bar 205 blocks the tooth of the region A ' of the circular body 2041 of driving lever 204, the circular body 2041 of driving lever 204 located, restriction driving lever 204 turns round.In the process of stirring driving lever 204 counterclockwise, energy storage component (such as, torsion spring) 206 memory action power, injecting bar 202 with the arc of driving lever 204 coaxial rotation also rotates corresponding radian simultaneously, from the input port of reservoir 201, fluid is sucked arc chambers 2011.By stirring the radian that driving lever rotates, the quantity sucking fluid can be determined easily.
Implementation method additionally provides a kind of method manufacturing above-mentioned various fluid infusion apparatus herein.Fig. 9 is the schematic flow sheet of the method for the fluid infusion apparatus manufactured for carrying out administration to patient, and the method can comprise: step S101, provides reservoir, and this liquid storage apparatus has the arc chambers for storing infused fluid; Step S102, provides arc to inject bar, and wherein, this arc is injected bar and is configured to the arc direction of arcuately chamber at arc-shaped cavity indoor moving; Step S103, provides injection button, and wherein, this injection button can be operated (such as, being pressed); Step S104, the quantitative displacement mechanism injecting bar operability with arc and be connected is provided, wherein, this quantitative displacement mechanism is configured to be promoted arc when injection button operates and injects bar at arc-shaped cavity indoor moving preset distance, thus is exported by the fluid of predetermined quantity in reservoir.Wherein, reservoir, arc inject bar, injection button and quantitative displacement mechanism can be the various different form of implementation that reservoir, the arc described in above-mentioned embodiment injects bar, injection button and quantitative displacement mechanism.
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 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 (18)
1. the fluid infusion apparatus for carrying out administration to patient, is characterized in that, comprising:
Reservoir, has the arc chambers for storing infused fluid;
Arc injects bar, and being configured to can along the arc direction of described arc chambers at described arc-shaped cavity indoor moving;
Injection button;
Quantitative displacement mechanism, injects bar operability with described arc and is connected, and is configured to be promoted described arc when described injection button operates and injects bar at described arc-shaped cavity indoor moving preset distance, thus exported by the fluid of predetermined quantity in described reservoir.
2. device according to claim 1, is characterized in that, described quantitative displacement mechanism comprises:
Driving lever, injects bar operability with described arc and engages and described arc can be driven to inject bar and be synchronized with the movement, have multiple first tooth;
Tooth bar, contact with described injection button operability, the second tooth that there is curved body and be arranged on described curved body and the 3rd tooth, described second tooth and the 3rd tooth are configured to coordinate to be operated the number of teeth of driving lever movement described in limit at described injection button with described multiple first tooth;
Energy storage component, is connected with described driving lever operability, store mechanical energy and be configured to apply driving force to described driving lever and move the predetermined number of teeth to make described driving lever.
3. device according to claim 2, it is characterized in that, second tooth of described tooth bar is arranged at the side of described curved body, is configured to allow when described injection button is pressed described driving lever under the driving force of described energy storage component, cross over described second tooth and moves the predetermined number of teeth;
3rd tooth of described tooth bar is arranged at the opposite side of described curved body, is configured to locate described driving lever with the number of teeth limiting described driving lever movement when described injection button is released.
4. device according to claim 3, is characterized in that, described device also comprises base and housing, and wherein, described reservoir, described quantitative displacement mechanism are installed in the space that described base and described housing limit.
5. device according to claim 4, is characterized in that, the stem portion that described driving lever has curved body and extends to the outside of described housing from described curved body, wherein,
The lateral surface of the curved body of described driving lever is evenly distributed with described multiple first tooth, and a lateral tooth flank of described first tooth is the flank of tooth mated with described second tooth, and the opposite side flank of tooth is the flank of tooth mated with described 3rd tooth,
The stem portion of described driving lever is configured to be operated to described curved body and moves along arc direction.
6. device according to claim 5, is characterized in that, the side of the curved body of described driving lever has the conjugate foramen that the described arc of assembling injects the installation portion of bar.
7. device according to claim 6, is characterized in that, the stem portion of described driving lever extends to the outside of described housing from the opening of described housing, and can be struck in described opening.
8. device according to claim 7, is characterized in that, the stroke that the stem portion of described driving lever is stirred is equal with the length of described arc chambers.
9. device according to claim 8, is characterized in that, described energy storage component comprises coil tension spring.
10. device according to claim 9, it is characterized in that, described coil tension spring is positioned in the arc groove of described base, one end of described coil tension spring is installed on the end face of described arc groove, the curved body that the other end is installed on described driving lever is injected the contrary side of bar with described arc.
11. devices according to claim 4, is characterized in that, the stem portion that described driving lever has circular body and extends from the outside of the circumferential described housing of described circular body, wherein,
The first area of the circular body of described driving lever is evenly distributed with the first tooth that multiple and described second tooth mates, and second area is evenly distributed with the first tooth that multiple and described 3rd tooth mates,
The stem portion of described driving lever is configured to be operated to described circular body and circumferentially moves.
12. devices according to claim 11, is characterized in that, described first area and described second area are symmetrical and have the first tooth of equal densities and quantity about the diameter shaft of described circular body.
13. devices according to claim 12, it is characterized in that, the stem portion of described driving lever has staircase structural model, and described arc injects the installation portion that bar has the arc body of rod and extends along the radial direction of the described arc body of rod, described installation portion has the recess extended along described radial direction
Wherein, the high portion of the staircase structural model of described stem portion embeds the recess that described arc injects bar and engages so that described driving lever is injected bar with described arc.
14. devices according to claim 13, is characterized in that, the stem portion of described driving lever extends to the outside of described housing from the opening of described housing and described base joint, and on described base, have the slide rail for described stem portion movement.
15. devices according to claim 14, is characterized in that, described energy storage component comprises torsion spring.
16. devices according to claim 15, is characterized in that, described torsion spring is positioned in the circular groove of described base, and one end of described torsion spring is installed on described base, and the other end is installed on the circular body of described driving lever.
17., according to the device in claim 4 to 16 described in any one, is characterized in that, described tooth bar has the keyway engaged with the cylindrical parts on described base, and can rotate in the length range of described keyway.
18., according to the device in claim 4 to 16 described in any one, is characterized in that, the lift area that described housing is stirred at described driving lever is provided with the scale corresponding with described predetermined quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342030.0U CN204864339U (en) | 2015-05-25 | 2015-05-25 | Fluid infusion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342030.0U CN204864339U (en) | 2015-05-25 | 2015-05-25 | Fluid infusion device |
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| CN204864339U true CN204864339U (en) | 2015-12-16 |
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| CN201520342030.0U Expired - Fee Related CN204864339U (en) | 2015-05-25 | 2015-05-25 | Fluid infusion device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267447A (en) * | 2015-05-25 | 2017-01-04 | 美敦力公司 | A kind of fluid infusion apparatus and manufacture method thereof |
| CN108837298A (en) * | 2018-06-21 | 2018-11-20 | 浙江大学 | A kind of subcutaneous medicament delayed release device |
-
2015
- 2015-05-25 CN CN201520342030.0U patent/CN204864339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267447A (en) * | 2015-05-25 | 2017-01-04 | 美敦力公司 | A kind of fluid infusion apparatus and manufacture method thereof |
| CN108837298A (en) * | 2018-06-21 | 2018-11-20 | 浙江大学 | A kind of subcutaneous medicament delayed release device |
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Granted publication date: 20151216 Termination date: 20210525 |