CN102389596B - Hand-held medical liquid dispensing device - Google Patents
Hand-held medical liquid dispensing device Download PDFInfo
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- CN102389596B CN102389596B CN 201110188710 CN201110188710A CN102389596B CN 102389596 B CN102389596 B CN 102389596B CN 201110188710 CN201110188710 CN 201110188710 CN 201110188710 A CN201110188710 A CN 201110188710A CN 102389596 B CN102389596 B CN 102389596B
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Abstract
The invention relates to a hand-held medical liquid dispensing device. The hand-held medical liquid dispensing device comprises a shell, and a drive device and a main control circuit board which are positioned in the shell, wherein the drive device comprises a support frame, a direct current motor, a driving screw gear, a driven screw gear, synchronous belt wheels, synchronous belts, a push-pull head and a guide rod; the driving screw gear is mounted on a gear shaft connected with the direct current motor; the driven screw gear is mounted on a back rotation shaft; the driving screw gear and the driven screw gear are matched with each other; both sides of the driven screw gear on the back rotation shaft are respectively provided with one synchronous belt wheel; the two synchronous belts are mounted between the synchronous belt wheels; the lower part of the push-pull head is fixedly connected with the synchronous belts; and the rotating motion of the direct current motor is converted into the linear reciprocating motion of the push-pull head through the transmission of the screw gears and synchronous belts, thereby pushing/pulling a core rod of a syringe. The hand-held medical liquid dispensing device has the advantages of reasonable structure, small volume, light weight, convenient operation process and simple and reliable power transmission, and can be used with a common disposable syringe for medical liquid dispensing.
Description
Technical field
The present invention relates to a kind of medical equipment, specifically a kind of hand-held medical liquid dispensing device.Mainly be applicable to operator and carry out the liquid medicine configuration.
Background technology
As everyone knows, the in-patient department of hospital need to be that the medicinal liquid that every patient prepares variety classes and ratio is used for injection according to doctor formula, and owing to concerning life and health, so dosing work is very important.The present stage work of making up a prescription of hospital all adopts disposable syringe manually to carry out by the nurse, needs constantly to draw, injects the emitter core bar to finish the work in the process of making up a prescription, and operator's labor intensity is larger.When hospital patient quantity was more, the dosing workload will be very heavy, and the staff is large because of the concern over mistakes stress, and then greatly reduce dosing efficient.
at present, also there is Medical liquid mixer open on patent gazette, a kind of Medical liquid mixer is disclosed as ZL200720103640.0, comprise a housing with openable upper cover and confession syringe needle export, the housing Inner Front End is offered the cabin for accommodating syringe, in housing, the rear end is equipped with micromachine and is subjected to it to control actuating device and the traction apparatus that drives, the on and off switch of micromachine is positioned at hull outside, described traction apparatus is for extending into the leading screw in syringe push-pull bar centre bore, the feed screw nut front end is with the draw-in groove that matches with the push-pull bar of syringe, the leading screw tail end is connected with the output shaft of micromachine via actuating device, it mainly adopts the guilde screw drives structure, and for the disposable syringe structure that is mated use, specific (special) requirements is arranged, the core bar that is syringe is necessary for hollow-core construction to hold the cantilever and screw bolt in body, syringe as disclosed in ZL2007201031680.Above-mentioned Medical liquid mixer has following drawback: (1) leading screw must stretch in the core bar of syringe, and leading screw is fixing cantilever design, can not dismantle sterilization, has increased the possibility of medicine cross-contamination; (2) in case when using, liquid dispenser breaks down and can't turn round, make syringe to take out in syringe core rod because leading screw stretches into, thereby cause the medicinal liquid in syringe to discard, cause waste; (3) can't compatible common disposable syringe, even to use this liquid dispenser, just can only buy supporting with it special syringe, reduce the versatility of equipment, and increased customer using cost.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes the aspects such as above-mentioned prior art compatibility, self-cleaning, saving, man-machine performance, provide a kind of rational in infrastructure, volume is little, lightweight, easy and simple to handle, power transmission is simple, reliable, can compatible common disposable syringe, can avoid cross-contamination fully, can not cause liquid waste, have good man-machine performance's hand-held medical liquid dispensing device.
the technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of hand-held medical liquid dispensing device, it comprises a housing, housing is provided with an openable transparency cover, in housing, the front portion is provided with the cylindrical cabin of placing syringe, the rear portion is provided with driving device and main control board, it is characterized in that: described driving device comprises support frame, direct current generator, main helical gear, from helical gear, synchronous pulley, Timing Belt, the push-and-pull head, guide post, two guide posts are installed between the front and back riser of described support frame, front rotary shaft and rear rotating shaft are installed between the vertical plates on both sides of support frame, described push-and-pull head and the dead in line of cylindrical cabin and can be connected with the syringe core rod push pedal, the push-and-pull head is provided with the pilot hole that coordinates with guide post, on the gear shaft that main helical gear is arranged on direct current generator is connected, be arranged in rear rotating shaft from helical gear, main helical gear and be composed of gear drive between alternating axis from helical gear, from the both sides of helical gear, a synchronous pulley is installed respectively in rear rotating shaft, two synchronous pulleys are installed on front rotary shaft accordingly, two Timing Belts are installed between the synchronous pulley of rear rotating shaft and front rotary shaft, a push-and-pull bottom is fixedly connected with Timing Belt, drive the push-and-pull head by Timing Belt and move back and forth along guide post, realize the push-and-pull to syringe core rod.
Push-and-pull head of the present invention is split type, its by core bar push pedal union joint be connected guide holder and form, connect guide holder and be provided with the pilot hole that coordinates with guide post, the bottom is fastenedly connected by screw buckle and two Timing Belts.
Rear rotating shaft one end face of the present invention is provided with the screw edge of a knife, and housing is provided with the emergency operation hole corresponding with screw edge of a knife position.When control system breaks down or extraneous power supply when interrupting, can use common straight screwdriver from emergency operation hole insertion, adopt manual mode to rotate rear rotating shaft, drive the push-and-pull head and move, and then push away, draw the disposable syringe core bar, avoid the liquid waste that causes syringe interior.
Housing of the present invention comprises upper shell, lower house, transparency cover, and housing consists of a complete enclosed space, and wherein transparency cover can opening and closing, and its below is a cylindrical cabin, is used for placing disposable syringe.Housing adopts Ergonomics design, and upper shell is the streamlined structure with depression, and lower house has one or more grooves, so that staff is puted forth effort to hold with a firm grip.The operational and controlled key buttons such as forwarding button, back, speed-regulating switch are positioned over the positive inferoanterior of lower house, so that use forefinger to control, and left hand or the right hand all can facilitate one-handed performance.
the two-stage drive mode that driving device of the present invention adopts helical gear drive to combine with toothed belt transmission, direct current generator drives main helical gear rotation, with rotating from helical gear of its engagement thereupon, then drive synchronous pulley by rear rotating shaft, the Timing Belt motion, rotatablely moving of direct current generator is converted to the rectilinear motion parallel with the direct current generator axis, as the push-and-pull head of end effector and Timing Belt connects firmly and be slidably matched with guide post, by controlling the forward of direct current generator, counter-rotating realizes the straight reciprocating motion of push-and-pull head, realize the push-and-pull of syringe core rod, complete the medicinal liquid preparation.Against existing technologies, the present invention is rational in infrastructure, and volume is little, and is lightweight, easy and simple to handle, and power transmission is simple, reliable, can compatible common disposable syringe, can avoid cross-contamination fully, can not cause liquid waste, have good man-machine performance.Mainly be applicable to the medical care operator and carry out the liquid medicine configuration.
Description of drawings
Fig. 1 is that the present invention forms structural representation.
The generalized section of Fig. 2 driving device of the present invention.
The perspective view of Fig. 3 driving device of the present invention.
Fig. 4 push-and-pull header structure of the present invention schematic diagram.
Number in the figure is: 1. syringe, 2. transparency cover, 3. cabin, 4. front rotary shaft, 5. push-and-pull head, 6. upper shell, 7. guide post, 8. support frame, 9. rear rotating shaft, 10. from helical gear, 11. main helical gears, 12. gear shafts, 13. direct current generator, 14. lower houses, 15. main control boards, 16. Timing Belt, 17. synchronous pulleys, 18. backs, 19. forwarding button, 20. speed-regulating switch, 21. synchronous pulleys, the 22. screw edges of a knife, 23. supply hub, 51. core bar push pedal union joint, 52. connect guide holder, 53. pilot holes.
The specific embodiment
As can be seen from Figure 1, a kind of hand-held medical liquid dispensing device, it comprises a housing, described housing comprises upper shell 6, lower house 14, transparency cover 2, and housing consists of a complete enclosed space, and wherein transparency cover 2 can opening and closing, its below is a cylindrical cabin 3, it is anterior that cabin 3 is positioned at housing, and cylindrical cabin 3 is provided with neck bush and external bushing, is used for placing disposable syringe 1.After syringe was put into described cabin 3, the disposable syringe overcoat coordinates with external bushing to be realized radially fixing, and wherein the crimping of syringe jacket end embeds in the annular groove of external bushing, realizes the axial restraint of syringe jacket.Syringe 1 syringe needle is positioned at the liquid dispenser outer front end, and syringe 1 core bar push pedal and push-and-pull 5 is connected, and the transparency cover 2 that closes just can be completed the installation of disposable syringe.Housing adopts Ergonomics design, the streamlined structure of upper shell 6 for having depression, and lower house 14 has one or more grooves, so that staff is puted forth effort to hold with a firm grip.The operational and controlled key buttons such as forwarding button 19, back 18, speed-regulating switch 20 are positioned over the positive inferoanterior of lower house 14, so that use forefinger to control, and left hand or the right hand all can facilitate one-handed performance.The housing rear portion is provided with supply hub 23, is used for being connected with power supply quick plug and the power line that is attached thereto.
Can find out from Fig. 1, Fig. 2, Fig. 3, in housing of the present invention, the rear portion is provided with driving device and main control board 15.Described driving device is as individual components, and integral installation is in the closed space that upper shell 6 and lower house 14 form.Described driving device comprises support frame 8, direct current generator 13, main helical gear 11, from helical gear 10, synchronous pulley 17, synchronous pulley 21, Timing Belt 16, push-and-pull 5, guide post 7 etc.All parts of driving device, element all pass through support frame 8 and realize location and assembling.Specifically: two guide posts 7 are installed between the front and back riser of described support frame 8, front rotary shaft 4 and rear rotating shaft 9 are installed between the vertical plates on both sides of support frame 8, described push-and-pull 5 is with 3 deads in line of cylindrical cabin and can be connected with syringe 1 core bar push pedal, push-and-pull 5 is provided with the pilot hole 53 that coordinates with guide post 7, and push-and-pull 5 realizes straight-line guidance by coordinating with two guide posts 7; Main helical gear 11 is arranged on the gear shaft 12 that is connected with direct current generator 13, driving main helical gear 11 by direct current generator 13 rotates, be arranged in rear rotating shaft 9 from helical gear 10, main helical gear 11 and be composed of gear drive between alternating axis from helical gear 10, thus rotatablely moving of direct current generator 13 is converted to rotatablely moving of square crossing direction.From the both sides of helical gear 10, a synchronous pulley 21 is installed respectively in rear rotating shaft 9, two synchronous pulleys 17 are installed on front rotary shaft 4 accordingly, two Timing Belts 16 are installed between the master and slave synchronous pulley 21,17 of rear rotating shaft 9 and front rotary shaft 4, after being fixed on same from helical gear 10, synchronous pulley 21 in rotating shaft 9, therefore the rotation from helical gear 10 will drive main synchronous pulley 21 rotations, and then transfer the motion to driven synchronous pulley 17 by two Timing Belts 16, so far complete motor 13 and rotatablely move to the straight-line conversion of Timing Belt 16.The bottom of push-and-pull 5 is fastenedly connected by screw buckle and two Timing Belts 16, and the axis of guide post 7 is parallel with Timing Belt 16, orders about push-and-pull 5 by Timing Belt 16 and moves back and forth along guide post 7.When Timing Belt 16 motion, will drive push-and-pull 5 motion thereupon.By controlling the forward and reverse of direct current generator 13, just can change the Linear transmission direction of Timing Belt 16, and then realize the reciprocating motion of push-and-pull 5, finally pull the core bar of disposable syringe to complete and extract and function of injection.
The present invention is in order effectively to utilize the inner space, and main control board 15 is arranged between the pilled-in selvedge of Timing Belt 16, slack list.Main control board 15 mainly comprises single-chip microcomputer, peripheral circuit, position sensor, power management module etc., its Position Sensor is for detection of the shift position of push-and-pull 5 and related data is fed back to single-chip microcomputer, to realize the global position closed loop control of liquid dispenser.Main control board 15 belongs to prior art, repeats no more.
As can be seen from Figure 4, push-and-pull of the present invention 5 is split type, its by core bar push pedal union joint 51 be connected guide holder 52 and form.Core bar push pedal union joint 51 be connected guide holder 52 and can connect by the mode of screw thread, buckle or screw, both are fixed together becomes complete push-and-pull 5.Core bar push pedal union joint 51 can compatible common disposable syringe.Connect guide holder 52 and be provided with the pilot hole 53 that coordinates with guide post 7, the bottom is fastenedly connected by screw buckle and two Timing Belts 16.All parts that contact with disposable syringe of the present invention are all detachably sterilized, core bar push pedal union joint 51 on the push-and-pull head that comprise the neck bush that contacts with syringe jacket, the external bushing that contacts with syringe core rod, contacts with syringe core rod by hands etc., thus the possibility of medicine cross-contamination avoided.
Rear rotating shaft 9 one end faces of the present invention are provided with the screw edge of a knife 22, and as shown in Figure 3, housing is provided with the emergency operation hole corresponding with screw edge of a knife position.When main control board 15 dispatch control systems break down or extraneous power supply when interrupting, can use common straight screwdriver from emergency operation hole insertion, rotating shaft 9 after adopting manual mode to rotate, drive push-and-pull 5 motion, and then push away, draw the disposable syringe core bar, medicinal liquid in syringe jacket is discharged, avoid the liquid waste that causes syringe interior.
The present invention retreats button 18 by operation, and forward key 19 is controlled retreating and advancing of push-and-pull 5, and then realizes retreating and advancing of syringe core rod, finally completes extraction and the action of injection of disposable syringe; In addition, have the speed stage switch, be used for controlling the translational speed of push-and-pull syringe core rod, can adopt geared-down speed to guarantee to extract precision when extracting the low capacity medicinal liquid, can adopt high-grade speed to improve dosing efficient when extracting the larger capacity medicinal liquid.Negotiation speed driving switch 20 can be regulated the translational speed of core bar, can carry out as required the rate conversion more than two grades, to satisfy the needs of different operating modes.
when the present invention uses, but the operator inserts the power supply quick plug of self-locking in liquid dispenser afterbody supply hub 23, the liquid dispenser rear execution initialization operation that powers on, the buzzer prompting is ready, then open transparency cover 2, put into disposable syringe 1, syringe jacket is coordinated with external bushing, and syringe core rod push pedal and push-and-pull 5 coordinates, transparency cover 2 closes, use the right hand or left hand to hold liquid dispenser, utilize forefinger to control to be positioned at the lower house bottom on the front retreat button 18 and forward key 19, just can realize extraction and the function of injection of disposable syringe, in addition can be according to using needs, regulate the pumping velocity of syringe by stirring speed-regulating switch 20.After completing the above-mentioned action of one or many, can change as required syringe, so repeatedly, thereby the manpower that thoroughly substitutes in the dosing process extracts and injection.
Volume of the present invention is little, and is lightweight, simple to operate, and human engineering is good, can compatible common disposable syringe, and possess the anti-cross-contamination ability, and can greatly reduce dosing personnel's labor intensity, can be widely used in health system.
Above, with reference to the accompanying drawings of embodiments of the present invention, but the invention is not restricted to illustrated embodiment.Wherein the helical gear commutating structure also can be the worm gear-endless screw drive mechanism, and synchronous pulley-toothed belt transmission also can be synchronizing wheel-wire rope gearing or other band kind of drive.For illustrated embodiment, in the scope identical with this invention, or in equal scope, can add various corrections or distortion.
Claims (1)
1. hand-held medical liquid dispensing device, it comprises a housing, housing is provided with an openable transparency cover, in housing, the front portion is provided with the cylindrical cabin of placing syringe, the rear portion is provided with driving device and main control board, it is characterized in that: described driving device comprises support frame, direct current generator, main helical gear, from helical gear, synchronous pulley, Timing Belt, the push-and-pull head, guide post, two guide posts are installed between the front and back riser of described support frame, front rotary shaft and rear rotating shaft are installed between the vertical plates on both sides of support frame, described push-and-pull head and the dead in line of cylindrical cabin and can be connected with the syringe core rod push pedal, the push-and-pull head is provided with the pilot hole that coordinates with guide post, on the gear shaft that main helical gear is arranged on direct current generator is connected, be arranged in rear rotating shaft from helical gear, main helical gear and be composed of gear drive between alternating axis from helical gear, from the both sides of helical gear, a synchronous pulley is installed respectively in rear rotating shaft, two synchronous pulleys are installed on front rotary shaft accordingly, two Timing Belts are installed between the synchronous pulley of rear rotating shaft and front rotary shaft, a push-and-pull bottom is fixedly connected with Timing Belt, drive the push-and-pull head by Timing Belt and move back and forth along guide post, realize the push-and-pull to syringe core rod, described push-and-pull head is split type, its by core bar push pedal union joint be connected guide holder and form, connect guide holder and be provided with the pilot hole that coordinates with guide post, the bottom is fastenedly connected by screw buckle and two Timing Belts, described rear rotating shaft one end face is provided with the screw edge of a knife, and housing is provided with the emergency operation hole corresponding with screw edge of a knife position, described main control board is arranged between pilled-in selvedge at Timing Belt, slack list, it mainly comprises single-chip microcomputer, peripheral circuit, position sensor, power management module, its Position Sensor detects the shift position of push-and-pull head and related data is fed back to single-chip microcomputer, realizes the global position closed loop control of liquid dispenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188710 CN102389596B (en) | 2011-07-07 | 2011-07-07 | Hand-held medical liquid dispensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188710 CN102389596B (en) | 2011-07-07 | 2011-07-07 | Hand-held medical liquid dispensing device |
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| Publication Number | Publication Date |
|---|---|
| CN102389596A CN102389596A (en) | 2012-03-28 |
| CN102389596B true CN102389596B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110188710 Active CN102389596B (en) | 2011-07-07 | 2011-07-07 | Hand-held medical liquid dispensing device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2682142A1 (en) * | 2012-07-06 | 2014-01-08 | Sanofi-Aventis Deutschland GmbH | Autoinjector |
| CN105943385A (en) * | 2016-06-24 | 2016-09-21 | 珠海市硕泰科技有限公司 | Handheld portable medicine dispenser |
| CN111544297A (en) * | 2019-03-20 | 2020-08-18 | 华中科技大学同济医学院附属协和医院 | Medical hand-held type electron syringe that dispenses |
| CN112043919B (en) * | 2020-09-10 | 2022-07-29 | 郑州瑞宇科技有限公司 | Insulin pump high-precision intelligent control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2845813Y (en) * | 2005-11-25 | 2006-12-13 | 种立刚 | Medical liquid mixer |
| CN201006084Y (en) * | 2007-02-15 | 2008-01-16 | 种立刚 | Medical dosage device |
| CN201668723U (en) * | 2010-06-07 | 2010-12-15 | 陈仕勇 | Medical liquid distributor |
-
2011
- 2011-07-07 CN CN 201110188710 patent/CN102389596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2845813Y (en) * | 2005-11-25 | 2006-12-13 | 种立刚 | Medical liquid mixer |
| CN201006084Y (en) * | 2007-02-15 | 2008-01-16 | 种立刚 | Medical dosage device |
| CN201668723U (en) * | 2010-06-07 | 2010-12-15 | 陈仕勇 | Medical liquid distributor |
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| CN102389596A (en) | 2012-03-28 |
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