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Quantitative supply mechanism for trace medicine liquid

A technology of quantitative supply and liquid medicine, which is applied in the field of precise control of trace supply of insulin, anesthetics, and biochemical analysis reagents. Simple control and reliable structure

Active Publication Date: 2013-12-25
DONGGUAN LIZHONG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design has the following disadvantages: 1. The micro servo motor needs to be decelerated, and it is required to be equipped with a precise micro deceleration mechanism, which leads to problems such as high cost, large volume, and heavy weight of the product; 2. The servo motor requires a driver and a controller to work together. In order to complete the control and drive, it will complicate the control circuit and increase the cost of the product; 3. Since the micro servo motor is very sensitive to electromagnetic interference, the disturbance of the external electromagnetic field may cause the misoperation of the motor and cause serious consequences. The product requires a very high level of electromagnetic protection design, which further increases the cost of the product

Method used

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  • Quantitative supply mechanism for trace medicine liquid
  • Quantitative supply mechanism for trace medicine liquid
  • Quantitative supply mechanism for trace medicine liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The present invention comprises bracket 1, screw nut 2, screw rod 3, ratchet 4, swing lever 5, non-return ratchet 6, active ratchet 7, left limit pin 8 and right limit pin 9, medicine bag 10 and medicine bag Balloon piston 11. A screw nut 2 is installed in the hole of the bracket 1, and a ratchet 4 is fixed on the screw nut 2. The combination of the screw nut 2 and the ratchet 4 can rotate in the hole of the bracket 1, but cannot move in the axial direction. A fork 5 is installed on the ratchet 4, and the fork 5 can rotate around the ratchet 4. The screw mandrel 3 and the nut 2 are connected by threaded fit. A screw washer 12 is fixedly installed at the lower end of the screw mandrel 3 . There is a rotary shaft 701 on the swing bar 5, and the active pawl 7 is installed on the shaft 701. The active pawl spring sheet 702 fixed on the swing bar provides a continuous active force for the active pawl 7, ensuring that the active pawl 7 is in contact with the active pawl. R...

Embodiment 2

[0057] Figure 4 and Figure 5 In the shown, as the invention described in Embodiment 1, the difference is: what is fixed on the screw nut 3 is not a ratchet wheel, but a worm wheel 22, and the worm wheel 22 is engaged with the worm gear rod 23, and the worm gear rod 23 passes through the bearing support 24 and 25 are installed on the support 1. One end of the worm gear 23 is fastened with a ratchet 4 and a fork 5 , and the fork 5 can rotate around the worm 23 axis. On the side plate 26 of the support, a non-return pawl rotating shaft 601 and a non-return pawl spring sheet (602) are installed. The non-return pawl 6 is installed on the non-return pawl rotating shaft 601. 602 The non-return pawl 6 provides a continuous force to ensure the contact between the non-return pawl 6 and the ratchet teeth of the ratchet 4 to prevent the ratchet 4 from turning backwards. There is a rotary shaft 701 on the swing bar 5, and the active pawl 7 is installed on the shaft 701. The active paw...

Embodiment 3

[0059] Figure 6As shown, the difference of the present invention as described in the second embodiment is that on the basis of the second embodiment, a screw reset mechanism is added. A left guide post 27 and a right guide post 28 are fixedly installed on the support 1, and the upper ends of the left guide post 27 and the right guide post 28 are fixed with the upper support 29. A slide plate 30 is installed on the guide post. The slide plate 30 can slide up and down along the left guide post 27 and the right guide post 28 . The upper end of the screw mandrel 3 is provided with a step to form a shaft head 31, and the shaft head 31 passes through the hole of the slide plate 30 and can rotate in the hole. A gear 32 is fixedly mounted on the shaft head 31 . Due to the limitation of the step on the screw mandrel 3 and the gear 32, the slide plate 30 and the screw mandrel 3 cannot move relative to each other, and the screw mandrel 3 and the gear 32 can rotate together. A motor ...

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Abstract

The invention relates to a quantitative supply mechanism for trace medicine liquid, is applied to transportation of medical liquid, chemical reagents and the like, and is particularly suitable for precisely controlling the trace supply of insulin, anesthetic medicine and biochemical analysis reagents. The quantitative supply mechanism for the 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 bracket (1) is fixedly installed on the upper end surface of the medicine sac (10); a screw rod nut (2) is movably connected into a hole in the center of the bracket (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) is connected with the upper end surface of the medicine sac piston (11) in a contact way; a ratchet mechanism is fixedly connected outside of the screw rod nut (2). The quantitative supply mechanism for the trace medicine liquid is reliable in structure and easy to control; trace control and supply of the medicine are realized; by the quantitative supply mechanism, the manufacturing cost is greatly reduced, and the overall device is small in size and convenient to carry compared with the prior art.

Description

Technical field [0001] The invention relates to a micro-dosage liquid quantitative supply mechanism, which is applied to the transportation of medical liquids, chemical reagents and the like. It is especially suitable for precise control of micro-supply of insulin, anesthetic drugs, and biochemical analysis reagents. Background technique [0002] Some special occasions require continuous, controllable, precise and extremely small supply of drugs. For example, diabetic patients need different amounts of insulin supply at different times of the day to control their blood sugar levels. In recent years, the emergence of portable insulin pumps can continuously and controllably deliver insulin to patients within 24 hours, thus avoiding repeated self-injection and allowing patients to maintain normal daily activities, which greatly improves the quality of life of patients . The advantage of the insulin pump is that it can supply continuously with the minimum amount of basal drug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/145
CPCA61M5/145
Inventor 王中
Owner DONGGUAN LIZHONG NEW MATERIAL TECH
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