CN202875953U - Ration supply mechanism of trace amount medicine liquid - Google Patents
Ration supply mechanism of trace amount medicine liquid Download PDFInfo
- Publication number
- CN202875953U CN202875953U CN 201220363915 CN201220363915U CN202875953U CN 202875953 U CN202875953 U CN 202875953U CN 201220363915 CN201220363915 CN 201220363915 CN 201220363915 U CN201220363915 U CN 201220363915U CN 202875953 U CN202875953 U CN 202875953U
- Authority
- CN
- China
- Prior art keywords
- memory material
- ratchet
- driving body
- material driving
- fork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model relates to a ration supply mechanism of trace amount medicine liquid, is applied to transportation of medical liquid and chemical agents and is particularly suitable for precisely controlling trace amount supplying of insulin, anesthetic medicine and chemical analysis reagents. The ration supply mechanism of trace amount medicine liquid comprises a medicine sac (10), a medicine sac piston (11) and a screw rod (3) and is characterized in that a support (1) is fixedly installed on the upper end face of the medicine sac (10), a screw rod nut (2) is movably connected in a hole which is formed in the center of the support (1), the screw rod (3) is connected with the screw rod nut (2) in a spiral mode, the lower end of the screw rod (3) contacts the upper end face of the medicine sac piston (11) and is connected with the upper end face of the medicine sac piston (11), and the outer side of the screw rod nut (2) is connected with a ratchet mechanism. The ration supply mechanism of trace amount medicine liquid has the advantages of being reliable in structure and easy to control, achieving trace amount control and supply of the medicine, greatly reducing manufacturing cost and being convenient to carry due to the fact that the whole device is small in size.
Description
Affiliated technical field
This utility model relates to a kind of micro-medicinal liquid weight feed mechanism, is applied to the conveying of medical fluid, chemical reagent etc.Be particularly suitable for the accurate control of insulin, anaesthetic, the supply of biochemical analysis reagent micro.
Background technology
Some special occasions need the supply of lasting, controlled, the accurate and atomic a small amount of of medicine.Such as diabetics, different time period in one day, need not commensurability insulin to supply with, to control its blood sugar level.In recent years, the appearance of portable insulin pump, can be in 24 hours continuously, controllably for the patient carries insulin, thereby avoided patient's self-injection repeatedly, and allowed the patient to keep normal daily routines, improved widely Quality of Life.The advantage of insulin pump is that it can be with the basic dose sustainable supply of minimum, the heavy dose of supply of cumulative realization that also can measure by the basis according to demand.But require the supply of dose must be accurately, the deficiency of dose and excessively all can bring serious consequence.The basis amount of General Requirements is in the microlitre magnitude, as adopt the insulin of every milliliter of 100 units, if the basis amount is made as 0.1 unit, then requiring each liquid-conveying amount is 1 microlitre (1 milliliter=1000 microlitre), thereby the control accuracy of liquid transporting body has been proposed strict requirement.
Present disclosed technology about insulin pump mainly adopts miniature servo motor to realize accurately control.There is following shortcoming in this design: 1, miniature servo motor need to slow down, and requires to be furnished with accurate micro speed reducing mechanism, the problem such as cause the cost of product high, volume is large, weight is large; 2, servo motor requires have driver and controller to be used in conjunction with and just can finish control and driving, causes the complicated of control circuit, and the cost of product is risen; 3, because miniature servo motor is very responsive to electromagnetic interference, and the disturbance of external electromagnetic field may cause the maloperation of motor, produces serious consequence, thereby product requirement has the design of very high level electromagnetic protection, and the cost of product is further risen.
The utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, provide a kind of low cost, easy to use, can realize micro-medicinal liquid weight feed mechanism, be specially adapted to the portable insulin pump.
A kind of micro-medicinal liquid weight feed mechanism comprises medicine bag, medicine bag piston and screw mandrel, it is characterized in that, is installed with support in the medicine bag upper surface, is flexibly connected a feed screw nut in the hole of carriage center, and screw mandrel is connected with feed screw nut's spiral; The screw mandrel lower end is connected with the contact of medicine bag piston upper surface; Be fixedly connected with ratchet mechanism in the feed screw nut outside, ratchet mechanism comprises ratchet, fork, check pawl, the active ratchet, left limit pin and right limit pin, ratchet is fixedly connected on feed screw nut's the outside, fork is movably connected in the axis outside of ratchet, initiatively ratchet is installed on the fork, initiatively ratchet is connected on the fork by gyroaxis, initiatively ratchet spring sheet one end is fixed on the fork, one side pressure is in the active pawl side, check pawl is rack-mount, the check pawl spring leaf is installed on the support, and check pawl spring leaf one end is fixedly mounted on the support, and a side pressure is in the side of check pawl; Also be installed with left limit pin and right limit pin on the support, left limit pin and right limit pin are used for the range of activity of restriction fork, are connected with driving device on the fork.
Described ratchet mechanism also comprises a worm gear and a worm gear pole, the engagement of worm gear worm and wheel, and ratchet is fixedly connected with an end of worm gear pole, and worm gear is fixedly connected with the feed screw nut, and ratchet sends rotation to feed screw nut by worm gear and worm gear pole; Worm gear pole is connected on the support by clutch shaft bearing bearing and the second bearing spider.
Described screw mandrel is connected with resetting-mechanism, resetting-mechanism comprises left guide pillar and the right guide pillar that is fixed on the support, upper bracket is fixed on the upper end of left guide pillar and right guide pillar, and slide plate slides is connected on left guide pillar and the right guide pillar, and left guide pillar and right guide pillar respectively two holes from the slide plate pass; The upper end of screw mandrel is the spindle nose that step is arranged, and the hole that spindle nose passes on the slide plate is fixedly connected with right gear, and right gear is connected with motor on being fixed on slide plate by left gear wheel again.
Described driving device is to comprise left side memory material driving body, the right memory material driving body, left side memory material driving body, the right memory material driving body is by wire and be connected on the power supply, left side memory material driving body, the right memory material driving body connecting place are fixed on the fork outer end, also have two-way switch in the loop, two-way switch is controlled respectively conducting and the disconnection of left side memory material driving body or the right memory material driving body.
Described driving device comprises that with left side memory material driving body and the right memory material driving body be silk, helical spring or flaky material by memory alloy material or nonmetal memory material.
Described two-way switch is electrical switch or hand switch.
Described driving device is the reciprocator that micro linear motor, rotation motor drive leading screw or connecting rod formation.
Described screw mandrel lower end is fixedly connected with the screw mandrel pad, is connected with the contact of medicine bag piston upper surface by the screw mandrel pad.
This utility model reliable in structure, control denier simple, that realized medicine are accurately controlled and are supplied with, and this utility model greatly reduces manufacturing cost than prior art, and the single unit system volume is little, is easy to carry.
Description of drawings
Fig. 1, be the structural representation of this utility model embodiment one;
Fig. 2, be the top view of Fig. 1;
Fig. 3, be the structural representation that memory material drives among this utility model embodiment one;
Fig. 4, be the structural representation of this utility model embodiment two;
Fig. 5, be the top view of Fig. 4;
Fig. 6, be the structural representation of this utility model embodiment three
Fig. 7, be the structural representation of this utility model embodiment four;
Fig. 8, be the structural representation of this utility model embodiment five;
Wherein, 1 is support, and 2 is the feed screw nut, and 3 is screw mandrel, 4 is ratchet, and 5 is fork, and 6 is check pawl, 7 is the active ratchet, and 8 is the left limit pin, and 9 is the right limit pin, 10 is medicine bag, and 11 is the medicine bag piston, and 12 is the screw mandrel pad, 13 is medicinal liquid, and 14 is the medicinal liquid that is extruded, and 15 is left side memory material driving body, 16 is the right memory material driving body, and 17 is two-way switch, and 18 is left fulcrum, 19 is right fulcrum, and 20 is power supply, and 21 is wire, 22 is worm gear, and 23 is worm gear pole, and 24 is the clutch shaft bearing bearing, 25 is the second bearing spider, and 26 is the side plate of support, and 27 is left guide pillar, 28 is right guide pillar, and 29 is upper bracket, and 30 is slide plate, 31 is spindle nose, and 32 is right gear, and 33 is motor, 34 is left gear, and 35 is spring body, and 36 is reciprocator, 37 is push rod, and 38 is the hinges bearing, and 601 is the check pawl gyroaxis, 602 is non-return ratchet spring sheet, and 701 is gyroaxis, and 702 is active ratchet spring sheet.
The specific embodiment
A kind of micro-medicinal liquid weight feed mechanism, comprise medicine bag 10, medicine bag piston 11 and screw mandrel 3, it is characterized in that, be installed with support 1 in medicine bag 10 upper surfaces, be flexibly connected a feed screw nut 2 in the hole at support 1 center, screw mandrel 3 is connected with feed screw nut's 2 spirals; Screw mandrel 3 lower ends are connected with the contact of medicine bag piston 11 upper surfaces; Be fixedly connected with ratchet mechanism in feed screw nut 2 outsides, ratchet mechanism comprises ratchet 4, fork 5, check pawl 6, active ratchet 7, left limit pin 8 and right limit pin 9, ratchet 4 is fixedly connected on feed screw nut 2 the outside, fork 5 is movably connected in the axis outside of ratchet 4, initiatively ratchet 7 is installed on the fork 5, initiatively ratchet 7 is connected on the fork 5 by gyroaxis 701, initiatively ratchet spring sheet 702 1 ends are fixed on the fork 5, one side pressure is in active ratchet 7 sides, check pawl 6 is installed on the support 1 by gyroaxis 601, check pawl spring leaf 602 is installed on the support 1, check pawl spring leaf 602 1 ends are fixedly mounted on the support 1, and a side pressure is in the side of check pawl 6; Also be installed with left limit pin 8 and right limit pin 9 on the support 1, left limit pin 8 and right limit pin 9 are used for the range of activity of restriction fork 5, are connected with driving device on the fork 5.
Described ratchet mechanism also comprises a worm gear 22 and a worm gear pole 23, worm gear pole 23 and worm gear 22 engagements, ratchet 4 is fixedly connected with an end of worm gear pole 23, and worm gear 22 is fixedly connected with feed screw nut 2, and ratchet 4 sends rotation to feed screw nut 2 by worm gear 22 and worm gear pole 23; Worm gear pole 23 is connected on the support 1 by clutch shaft bearing bearing 24 and the second bearing spider 25.
Described screw mandrel 3 is connected with resetting-mechanism, resetting-mechanism comprises left guide pillar 27 and the right guide pillar 28 that is fixed on the support 1, upper bracket 29 is fixed on the upper end of left guide pillar 27 and right guide pillar 28, slide plate 30 is slidingly connected on left guide pillar 27 and the right guide pillar 28, and left guide pillar 27 and right guide pillar 28 respectively two holes from the slide plate 30 pass; The upper end of screw mandrel 3 is spindle noses 31 that step is arranged, and the hole that spindle nose 31 passes on the slide plate 30 is fixedly connected with right gear 32, and right gear 32 is connected with motor 33 on being fixed on slide plate 30 by left gear wheel 34 again.
Described driving device is to comprise left side memory material driving body 15, the right memory material driving body 16, left side memory material driving body 15, the right memory material driving body 16 is by wire 21 and be connected on the power supply 20, left side memory material driving body 15, the right memory material driving body 16 connecting places are fixed on fork 5 outer ends, also have two-way switch 17 in the loop, two-way switch 17 is controlled respectively conducting and the disconnection of left side memory material driving body 15 or the right memory material driving body 16.
The left side memory material driving body 15 that described driving device comprises and the right memory material driving body 16 are silk, helical spring or the flaky materials by memory alloy material or nonmetal memory material.
Described two-way switch 17 is electrical switch or hand switch.
Described driving device is the reciprocator 36 that micro linear motor, rotation motor drive leading screw or connecting rod formation.
Described screw mandrel 3 lower ends are fixedly connected with screw mandrel pad 12, are connected with the contact of medicine bag piston 11 upper surfaces by screw mandrel pad 12.
A kind of micro-medicinal liquid feed mechanism of accurate control comprises support 1, feed screw nut 2, screw mandrel 3, ratchet 4, fork 5, check pawl 6, active ratchet 7, left limit pin 8, right limit pin 9, medicine bag 10 and medicine bag piston 11.In support 1 hole feed screw nut 2 is installed, is fixed with ratchet 4 on the feed screw nut 2, feed screw nut 2 and ratchet 4 combinations can be rotated in the hole of support 1, but axially cannot move.At ratchet 4 fork 5 is installed, fork 5 can rotate around ratchet 4.Screw mandrel 3 is connected with nut by the threaded engagement connection, is installed with screw mandrel pad 12 in screw mandrel 3 lower ends.Initiatively ratchet 7 is installed on the fork 5 by gyroaxis 701, and the active ratchet spring sheet 702 that is fixed on the fork 5 provides a lasting active force for active ratchet 7, guarantees that initiatively ratchet 7 contacts with ratchet 4.Check pawl 6 is installed on the support 1 by check pawl gyroaxis 601, and spring leaf 602 is fixedly mounted on the support 1.Check pawl 6 can prevent ratchet 4 reversings.Be installed in left limit pin 8 and right limit pin 9 on the support 1, can limit the hunting range of fork 5, when making fork 5 each the swing, initiatively ratchet 7 promotes ratchet 4 and rotates a fixing ratchet number, drives simultaneously feed screw nut 2 and rotates an angle of determining.Screw mandrel 3 moves downward a definite displacement under feed screw nut 2 effect.Under the promotion of screw mandrel 3, medicine bag piston 11 moves down, and medicinal liquid 13 is extruded from the medicine bag opening part.
Fixing on the described feed screw nut 2, can be worm gear 22, worm gear pole 23 and worm gear 22 engagements, and be installed with ratchet 4 on the worm gear pole are realized larger speed reducing ratio.
Described micro-medicinal liquid feed mechanism can be with the resetting-mechanism of screw mandrel 3.Resetting-mechanism has on the left guide pillar 27 and right guide pillar 28 that is fixed on the support 1, upper bracket 29, slide plate 30 and be fixed on motor 33 on the slide plate 30.Slide plate 30 can slide up and down along left guide pillar 27 and right guide pillar 28.Be provided with step 31 in screw mandrel 3 upper ends, the screw mandrel spindle nose passes the hole on the slide plate 30, and can rotate in the hole.Be installed with gear 32 at spindle nose 31, screw mandrel 3 and gear 32 can rotate together.Downside at slide plate 30 is installed with motor 33.The axle of motor 33 passes the hole of slide plate 30, is installed with gear 34 at the upside of slide plate 30, the axle of motor 33.Motor gear 34 and screw gear 32 engagements.Driving screw mandrel 3 when motor 33 energisings are rotated rotates.Because screw mandrel 3 and feed screw nut 2 pass through threaded engagement, feed screw nut 2 is limited on the support 1 up and down play, simultaneously again because nut 2 and worm gear 22 are fixing, worm gear 22 is subject to the restriction of worm gear pole 23 and can not rotates, so under the driving of motor 33, screw mandrel 3 will move up, and realize resetting of screw mandrel 3.
Described worm gear pole 23 also can directly be driven by motor 39.Motor 39 can be surveyed and control the rotation of motor 39 with code-disc 40 and detector 42 by controller 43, make motor 39 drive fixing angle of worm gear pole 23 each rotations.
Described active ratchet spring sheet 702 and check pawl spring leaf 602 can be lamellar, helical spring, or other form.
Described medicine bag 10 is for to have the cylindrical container of certain sectional area, and has certain rigidity, is provided with medicine liquid outlet in the lower end, and cross sectional shape is not limit.
Described medicine bag 10 can be connected with support 1, but can dismantle; Can not be connected with support 1 yet, be fixed on other structure, fixed form is not limit.
The driving of described fork 5 can be left side memory material driving body 15 and the right memory material driving body 16.Left side memory material driving body 15 and the right memory material driving body 16 1 ends are connected on the fork 5, and other end stuck-at-１ 8 is that left fulcrum and 19 is on the right fulcrum; When memory material driving body 15 and 16 is switched on respectively heating, will shrink, pulling fork 5 is mobile in the opposite direction, has realized the reciprocal driving to fork 5.Left side memory material driving body 15 and the right memory material driving body 16 are connected in parallel on the power supply 20 by wire 21, be connected with two-way switch 17 on the wire, two-way switch 17 is controlled respectively conducting and the disconnection of note left side memory material driving body 15 and the right memory material driving body 16.
Described left side memory material driving body 15 and the right memory material driving body 16 are made of shape-memory material, can be memory alloy material or nonmetal memory material.Form can be silk, helical spring, sheet, or other form.
Described two-way switch 17 is the electrical switches by signal of telecommunication control, or hand switch.
Described the right memory material driving body 16 can not be memory material, but the elastomer 35 of similar steel spring or gum elastic etc.When 15 energisings of on the left side memory material driving body were shunk, elastomer 35 was elongated, and after 15 outages of left side memory material driving body, intensity begins to descend, and elastomer 35 shrinks, and note left side memory material driving body 15 is elongated.Realization is to the reciprocal driving of fork 5.
The driving of described fork 5 can be the reciprocator 36 that micro linear motor or rotation motor drive leading screw or connecting rod formation.
The driving of described fork can be the driving of Electromagnetic Drive, motor or other form.
Embodiment one:
This utility model comprises support 1, feed screw nut 2, screw mandrel 3, ratchet 4, fork 5, check pawl 6, active ratchet 7, left limit pin 8 and right limit pin 9, medicine bag 10 and medicine bag piston 11.Feed screw nut 2 is installed in the hole of support 1, is fixed with ratchet 4 on the feed screw nut 2, feed screw nut 2 and ratchet 4 combinations can be rotated in the hole of support 1, but axially cannot move.At ratchet 4 fork 5 is installed, fork 5 can rotate around ratchet 4.Screw mandrel 3 is connected with nut and is connected by threaded engagement.Be installed with screw mandrel pad 12 in screw mandrel 3 lower ends.At fork 5 gyroaxis 701 is arranged, initiatively ratchet 7 is installed on the axle 701, and the active ratchet spring sheet 702 that is fixed on the fork provides a lasting active force for active ratchet 7, guarantees that ratchet 7 initiatively contacts with ratchet on the ratchet 4.At support check pawl gyroaxis 601 is installed, and check pawl spring leaf 602, check pawl 6 is installed on the check pawl gyroaxis 601, check pawl spring leaf 602 provides a lasting active force for check pawl 6, guarantee the contacting of ratchet of check pawl 6 and ratchet 4, to prevent ratchet 4 reversings.Be installed with left limit pin 8 and right limit pin 9 at support 1, with the hunting range of restriction fork 5, when making fork 5 each the swing, initiatively ratchet 7 promotes ratchet 4 and rotates a fixing ratchet number, drives simultaneously feed screw nut 2 and rotates an angle of determining.Below support, be fixed with medicine bag 10, medicine bag piston 11 and medicinal liquid 13 are arranged in medicine bag 10.Medicine bag is the rigidity open containers with certain sectional area.The fixed form of medicine bag 10 is not limit.Screw mandrel pad 12 withstands on the top of medicine bag piston 11.Such as Fig. 1 and Fig. 2.
When fork 5 swung clockwise, because the restriction of check pawl 6 being arranged, ratchet 4 did not rotate, and initiatively ratchet 7 then slips over ratchet surface, and fork 5 stops to the position of right limit pin 9.When fork 5 counter-clockwise swing, under the promotion of active ratchet 7, ratchet 4 and feed screw nut 2 rotate, and stop when fork 5 arrives the position of left limit pin 8, and this moment, ratchet 4 and feed screw nut 2 rotated a θ angle.Because the effect of the frictional force between screw mandrel pad 12 and the medicine bag piston 11, this moment, screw mandrel 3 did not rotate along with feed screw nut 2 rotation, but under feed screw nut 2 effect, move downward a definite displacement, its displacement is determined by the angle θ of feed screw nut's 2 rotations and the pitch of screw mandrel 3.When screw mandrel 3 moves downward, promote moving downward of medicine bag piston 11, medicinal liquid 13 is extruded from the medicine bag opening part.Because medicine bag 10 has constant cross-sectional area, thereby the volume of the medicinal liquid 14 that is extruded is determined.Thereby realized the accurate supply of micro-medicinal liquid.
Active ratchet spring sheet 702 described in this utility model and check pawl spring leaf 602 can be lamellar, helical spring, or other form.
Fork 5 described in this utility model can be driven by left side memory material driving body 15, the right memory material driving body 16.
The memory effect of shape-memory material refers to that material is out of shape under certain condition, the function that its shape can be recovered automatically when being heated.The heat that memory material needs can from external thermal source, also can make by electric current and himself generate heat to obtain.This utility model is to adopt the method for current flow heats to realize memory alloy driven.
Left side memory material driving body 15 described in this utility model, the right memory material driving body 16, one ends are connected on the fork 5, and the other end is fixed on left fulcrum 18 and the right fulcrum 19; When left side memory material driving body 15, the right memory material driving body 16 are switched on respectively heating, will shrink, pulling fork 5 is mobile in the opposite direction, has realized the reciprocal driving to fork 5.Left side memory material driving body 15, the right memory material driving body 16 are connected in parallel on the power supply 20 by wire 21, be connected with two-way switch 17 on the wire, two-way switch 17 is controlled respectively conducting and the disconnection of left side memory material driving body 15, the right memory material driving body 16.Such as Fig. 3.
Left side memory material driving body 15 described in this utility model, the right memory material driving body 16 are made of shape-memory material, can be memory alloy material or nonmetal memory material.Form can be silk, helical spring, sheet, or other form.
Two-way switch 17 described in this utility model is the electrical switches by signal of telecommunication control, or hand switch.
Left side memory material driving body 15 described in this utility model, the right memory material driving body 16 can not be memory materials also, but the driving of Electromagnetic Drive, motor or other form.
Embodiment two:
Fig. 4 and shown in Figure 5 in, such as embodiment one described invention, its difference is: feed screw nut 3 fixing be not ratchet, but worm gear 22, worm gear 22 and worm gear pole 23 engagements, worm gear pole 23 is installed on the support 1 by bearing spider 24 and 25.At fastening ratchet 4 and the fork 5 of being equipped with of an end of worm gear pole 23, fork 5 can rotate around worm gear pole 23 axles.Side plate 26 at support is equipped with check pawl gyroaxis 601, and check pawl spring leaf (602), check pawl 6 is installed on the check pawl gyroaxis 601, check pawl spring leaf 602 provides a lasting active force for check pawl 6, guarantee the contacting of ratchet of check pawl 6 and ratchet 4, to prevent ratchet 4 reversings.At fork 5 gyroaxis 701 is arranged, initiatively ratchet 7 is installed on the axle 701, and the active ratchet spring sheet 702 that is fixed on the fork provides an one by one active force that continues for active ratchet 7, guarantees that ratchet 7 initiatively contacts with ratchet on the ratchet 4.Be installed with left limit pin 8 and right limit pin 9 at rack side plate 26, hunting range with restriction fork 5, when making fork 5 each the swing, initiatively ratchet 7 drives worm gear pole 23 and rotates an angle of determining, worm gear pole 23 drives again worm gear 22 and feed screw nut 2 rotates a less angle, thereby promoting little displacement of screw mandrel 3 generations, this displacement is by the speed reducing ratio of angle, worm gear 22 and the worm gear pole 23 of fork 5 swings, and the thread pitch of screw mandrel 3 determines jointly.
Embodiment three:
Shown in Figure 6, such as embodiment two described this utility model, its difference is: on the basis of embodiment two, increased the screw mandrel resetting-mechanism.Be installed with left guide pillar 27 and right guide pillar 28 at support 1, the upper end of left guide pillar 27 and right guide pillar 28 and upper bracket 29 are fixing.At guide pillar slide plate 30 is installed.Slide plate 30 can slide up and down along left guide pillar 27 and right guide pillar 28.The upper end of screw mandrel 3 is provided with step and forms spindle nose 31, and spindle nose 31 passes the hole of slide plate 30, and can rotate in the hole.Be installed with gear 32 at spindle nose 31.Because the step on the screw mandrel 3 and the restriction of gear 32, relative play can not occur with screw mandrel 3 in slide plate 30, and screw mandrel 3 and gear 32 can rotate together.Downside at slide plate 30 is installed with motor 33.The axle of motor 33 passes the hole of slide plate 30, is installed with gear 34 at the upside of slide plate 30, the axle of motor 33.Motor gear 34 and screw gear 32 engagements.When motor 33 energising rotation driven gears 34 rotated, also driven gear 32 and screw mandrel 3 rotated simultaneously.Because screw mandrel 3 and feed screw nut 2 pass through threaded engagement, feed screw nut 2 is limited on the support 1 up and down play, simultaneously again because nut 2 and worm gear 22 are fixing, worm gear 22 is subject to the restriction of worm gear pole 23 and can not rotates, so under the driving of motor 33, screw mandrel 3 will move up, and realize resetting of screw mandrel 3.When screw mandrel 3 moved up, slide plate 30 was also in company with moving up.
Embodiment four:
Such as embodiment one embodiment two described this utility model, wherein said memory material driving body 16 can not be memory material, but the elastomer 35 of similar steel spring or gum elastic etc.During on the left side memory material driving body 15 energising heat shrink, elastomer 35 is elongated; After 15 outages of left side memory material driving body, intensity begins to descend, and elastomer 35 shrinks, and left side memory material driving body 15 is elongated.Realization is to the reciprocal driving of fork 5.Such as Fig. 7.
Embodiment five:
Such as embodiment one and embodiment two described this utility model, the driving of wherein said fork 5 also can be finished by miniature linear actuator 36.The push rod 37 of driver 36 is flexibly connected with fork 5, and push rod 37 can move back and forth, and drives fork 5 motions.Driver 36 is fixed on the hinges bearing 38.Such as Fig. 8.
Claims (10)
1. micro-medicinal liquid weight feed mechanism, comprise medicine bag (10), medicine bag piston (11) and screw mandrel (3), it is characterized in that, be installed with support (1) in medicine bag (10) upper surface, be flexibly connected a feed screw nut (2) in the hole at support (1) center, screw mandrel (3) is threaded with feed screw nut (2); Screw mandrel (3) lower end is connected with the contact of medicine bag piston (11) upper surface; Be fixedly connected with ratchet mechanism in feed screw nut (2) outside, ratchet mechanism comprises ratchet (4), fork (5), check pawl (6), active ratchet (7), left limit pin (8) and right limit pin (9), ratchet (4) is fixedly connected on the outside of feed screw nut (2), fork (5) is movably connected in the axis outside of ratchet (4), initiatively ratchet (7) is installed on the fork (5), initiatively ratchet (7) is connected on the fork (5) by gyroaxis (701), initiatively ratchet spring sheet (702) one ends are fixed on the fork (5), one side pressure is in active ratchet (7) side, check pawl (6) is installed on the support (1) by gyroaxis (601), check pawl spring leaf (602) is installed on the support (1), check pawl spring leaf (602) one ends are fixedly mounted on the support (1), and a side pressure is in the side of check pawl (6); Also be installed with left limit pin (8) and right limit pin (9) on the support (1), left limit pin (8) and right limit pin (9) are used for the range of activity of restriction fork (5), and fork is connected with driving device on (5).
2. a kind of micro-medicinal liquid weight feed according to claim 1 mechanism, it is characterized in that, described ratchet mechanism also comprises a worm gear (22) and a worm gear pole (23), worm gear pole (23) and worm gear (22) engagement, ratchet (4) is fixedly connected with an end of worm gear pole (23), worm gear (22) is fixedly connected with feed screw nut (2), and ratchet (4) sends rotation to feed screw nut (2) by worm gear (22) and worm gear pole (23); Worm gear pole (23) is connected on the support (1) by clutch shaft bearing bearing (24) and the second bearing spider (25).
3. a kind of micro-medicinal liquid weight feed according to claim 1 and 2 mechanism, it is characterized in that, described screw mandrel (3) is connected with resetting-mechanism, resetting-mechanism comprises left guide pillar (27) and the right guide pillar (28) that is fixed on the support (1), upper bracket (29) is fixed on the upper end of left guide pillar (27) and right guide pillar (28), slide plate (30) is slidingly connected on left guide pillar (27) and the right guide pillar (28), and left guide pillar (27) and right guide pillar (28) respectively two holes from the slide plate (30) pass; The upper end of screw mandrel (3) is the spindle nose (31) that step is arranged, the hole that spindle nose (31) passes on the slide plate (30) is fixedly connected with right gear (32), and right gear (32) is connected with motor (33) on being fixed on slide plate (30) by left gear wheel (34) again.
4. a kind of micro-medicinal liquid weight feed according to claim 1 and 2 mechanism, it is characterized in that, described driving device is to comprise left side memory material driving body (15), the right memory material driving body (16), left side memory material driving body (15), the right memory material driving body (16) is by wire (21) and be connected on the power supply (20), left side memory material driving body (15), the right memory material driving body (16) connecting place is fixed on fork (5) outer end, also have two-way switch (17) in the loop, two-way switch (17) is controlled respectively conducting and the disconnection of left side memory material driving body (15) and the right memory material driving body (16).
5. a kind of micro-medicinal liquid weight feed according to claim 3 mechanism, it is characterized in that, described driving device is to comprise left side memory material driving body (15), the right memory material driving body (16), left side memory material driving body (15), the right memory material driving body (16) is by wire (21) and be connected on the power supply (20), left side memory material driving body (15), the right memory material driving body (16) connecting place is fixed on fork (5) outer end, also have two-way switch (17) in the loop, two-way switch (17) is controlled respectively conducting and the disconnection of left side memory material driving body (15) and the right memory material driving body (16).
6. a kind of micro-medicinal liquid weight feed according to claim 5 mechanism, it is characterized in that, the left side memory material driving body (15) that described driving device comprises and the right memory material driving body (16) are silk, helical spring or the flaky materials by memory alloy material or nonmetal memory material.
7. a kind of micro-medicinal liquid weight feed according to claim 5 mechanism is characterized in that, described two-way switch (17) is electrical switch or hand switch.
8. a kind of micro-medicinal liquid weight feed according to claim 1 and 2 mechanism is characterized in that, described driving device is that micro linear motor, rotation motor drive the reciprocator (36) that leading screw or connecting rod form.
9. a kind of micro-medicinal liquid weight feed according to claim 3 mechanism is characterized in that, described driving device is that micro linear motor, rotation motor drive the reciprocator (36) that leading screw or connecting rod form.
10. a kind of micro-medicinal liquid weight feed according to claim 1 mechanism, it is characterized in that, described screw mandrel (3) lower end is fixedly connected with screw mandrel pad (12), is connected with the contact of medicine bag piston (11) upper surface by screw mandrel pad (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363915 CN202875953U (en) | 2012-07-26 | 2012-07-26 | Ration supply mechanism of trace amount medicine liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363915 CN202875953U (en) | 2012-07-26 | 2012-07-26 | Ration supply mechanism of trace amount medicine liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202875953U true CN202875953U (en) | 2013-04-17 |
Family
ID=48067424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363915 Withdrawn - After Issue CN202875953U (en) | 2012-07-26 | 2012-07-26 | Ration supply mechanism of trace amount medicine liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202875953U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463695A (en) * | 2012-07-26 | 2013-12-25 | 东莞市立中新材料科技有限公司 | Quantitative supply mechanism for trace medicine liquid |
| CN106214152A (en) * | 2016-08-11 | 2016-12-14 | 赛客（厦门）医疗器械有限公司 | A kind of respiration simulator calibrating lung function instrument |
| WO2019014895A1 (en) * | 2017-07-20 | 2019-01-24 | 东莞市立中新材料科技有限公司 | Precise linkage structure and micro liquid injector using same |
| CN113959542A (en) * | 2021-11-04 | 2022-01-21 | 宁夏环保集团有限责任公司 | Accurate weighing and putting device for medicament |
-
2012
- 2012-07-26 CN CN 201220363915 patent/CN202875953U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463695A (en) * | 2012-07-26 | 2013-12-25 | 东莞市立中新材料科技有限公司 | Quantitative supply mechanism for trace medicine liquid |
| CN103463695B (en) * | 2012-07-26 | 2015-07-29 | 东莞市立中新材料科技有限公司 | A kind of micro-medicinal liquid weight feed mechanism |
| CN106214152A (en) * | 2016-08-11 | 2016-12-14 | 赛客（厦门）医疗器械有限公司 | A kind of respiration simulator calibrating lung function instrument |
| WO2019014895A1 (en) * | 2017-07-20 | 2019-01-24 | 东莞市立中新材料科技有限公司 | Precise linkage structure and micro liquid injector using same |
| CN109451730A (en) * | 2017-07-20 | 2019-03-08 | 东莞市立中新材料科技有限公司 | A kind of precision serial verb construction and the micro liquid syringe using the structure |
| CN113959542A (en) * | 2021-11-04 | 2022-01-21 | 宁夏环保集团有限责任公司 | Accurate weighing and putting device for medicament |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103463695B (en) | A kind of micro-medicinal liquid weight feed mechanism | |
| CN202875953U (en) | Ration supply mechanism of trace amount medicine liquid | |
| CN202449061U (en) | Detecting device for position of steering wheel | |
| CN202223641U (en) | Intelligent safe transfusion system | |
| CN201127756Y (en) | Electric up-down infusion rack | |
| CN203417371U (en) | Infusion pump | |
| CN201692426U (en) | Insulin pump with servo mechanism | |
| CN202812033U (en) | Hand-screw releasing structure for electric pushing rod | |
| CN202310986U (en) | Adjustable electric heater | |
| CN215608357U (en) | Transfusion system regulating and controlling device | |
| CN206762262U (en) | A kind of arm attachment structure of toy robot | |
| CN103072366B (en) | A kind of binding machine reversible-turn driving mechanism and gluing machine | |
| CN205437479U (en) | Ultrasonic welding machine and elevating gear thereof | |
| CN101116757A (en) | Transfer pump automatic pipe pressing device | |
| CN207145555U (en) | Automatic clutch loading device | |
| CN205823600U (en) | A kind of dosing electronic pump | |
| KR20130124424A (en) | Apparatus for supplying medicinal fluid | |
| CN203365447U (en) | Multi-Tip-head variable spacing device used in full-automatic sampling instrument | |
| CN201832207U (en) | Portable infusion apparatus | |
| CN215780496U (en) | Multifunctional box of intelligent infusion manager | |
| CN205064208U (en) | Liquid chromatogram high -pressure transfusion pump that connects in parallel | |
| CN205442594U (en) | Desk -top ceramic pump liquid filling machine | |
| CN105947410B (en) | A kind of acid waste liquid retracting device | |
| CN103278656B (en) | Multiple Tip head distance varying device applied to full-automatic sample feeder | |
| CN202802345U (en) | Insulin pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20150729 |
|
| RGAV | Abandon patent right to avoid regrant |