CN2514841Y - Protable continuous transfusion pump - Google Patents

Abstract

The utility model relates to a portable transfer pump, which can be carried about without affecting the work or study. A liquid medicine bag in flexible package is arranged in an upper case body, the liquid medicine bag is connected with the pump body by a tube, an automatic controlling circuit is arranged in a lower case body, the automatic controlling circuit and the pump body connected with the automatic controlling circuit form a transfusion system through a worm and gear mechanical transmission part.

Description

Portable continuous infusion pump

This utility model belongs to medical device product, relates in particular to a kind of human transfusion with importing pump.

Present venous transfusion is commonly called as beats garter, is injecting fluid is hung over the enterprising pedestrian's vena systemica injection of patient bed preceding shelf, because liquid measure is big, inject time is long, taken patient's long period, and needs of patients is when moving, it is very inconvenient also to need have the human hands lifting bottle in addition.

The purpose of this utility model provides a kind of portable continuous infusion pump, and transfusion and importing pump are carried by the patient, imports regularly a certain amount of medicinal liquid of input in human body of pump.

For achieving the above object, the following technical scheme of this novel employing: a kind of portable continuous infusion pump, it is made up of with the lower house that importing pump and control circuit are housed the upper shell of dress medicinal fluid bag, it is characterized in that: import have in the pump can move left and right piston ring, be connected with piston rod on the piston ring, piston rod links to each other with screw mandrel by shaft coupling, screw mandrel drives move left and right by the worm and gear reduction gearing mechanism, the two ends of the pump housing are equipped with feed liquor check valve and fluid check valve respectively, the feed liquor check valve links to each other with medicinal fluid bag by tube for transfusion, and the output catheter is housed on the fluid check valve.

Performance also is provided with selector switch, regularly button, import volume are set button in order to improve.

This is novel for the patient provides a kind of convenient and practical fluid delivery apparatus, and especially busy patient can not influence work.

Below in conjunction with accompanying drawing and further specify novel by embodiment:

Fig. 1 is this novel structural representation;

Fig. 2 is the structural representation of liquid in-out check valve on the pump housing;

Fig. 3 is this novel appearance side view;

Embodiment: 1 side cover; Be used to place the plastic flexible package medicinal fluid bag in 2 upper shells, the upper shell; 3 import volumes are set button, are used for being provided with each import volume, as 5 milliliters or 10 milliliters; 4 right input check valves, 37 lower houses, wiring board, importing pump and its running part all are contained in the lower house; 5 shaft couplings, it is fixed on the left end of screw mandrel 9, and the step of piston rod 19 right-hand members is stuck in its intermediary groove, and screw mandrel 9 and piston rod 19 are connected as a single entity.6 worm gears, the step on its both sides is contained in the hole of bracing frame 7, and can freely rotate, and the center of worm gear is screwed hole, and screw mandrel 9 is spun on its center; The 8th, microswitch, its contact is facing to the right part of screw mandrel 9; The 10th, worm screw, it be contained in small machine 12 the axle on, the tooth of screw thread on the worm screw and worm gear 6 matches.The 11st, motor base, bracing frame 7 also be fixed on it above, 13 right output check valves, are used for outlet tube 16 being connected with the intravital thin tube for transfusion of injection people and locking 15 union joints.16 outlet tubes, its end of one are contained in and are connected on then on the three way cock on delivery 32 and the right output check valve 13, and delivery 32 connects together with left side output check valve body 20.17 batteries; 18 battery covers; 19 piston rods, its left end are connected with piston ring 21.The interior table of the periphery of piston ring 21 and the pump housing 14 is for movingly.There is input head 35 on 22 left side input check valve body, its left side, are connected with conduit 26 on the input head 35, and conduit 26 links to each other and links to each other with liquid storing bag 29 by the three way cock with right side input check valve 4.The 23rd, acoustical generator, prompting replacing medicinal fluid bag after liquid is totally lost.24 wiring boards, be used for device electronic component and gauge tap, the 25th, the enclosing cover of lower house 37,27 selector switches; 28 timing buttons; 30 jump rings, jump ring itself are fixed on the housing, the clamping pump housing 14 in the jump ring, and the pump housing 14 can load and unload easily.31 collars; 33 soft sheet or the sheet rubbers moulded, the external diameter of collar 31 and valve block internal diameter are tight fit, be used for moulding sheet 33 extruding and being fixed in the valve body with soft, when piston ring 21 moves to left end, the liquid of band pressure is pushed the soft sheet 33 of moulding open left through collar 31 intermediary holes, enters the person by capillary vessel again through delivery 32 and outlet tube 16.When piston ring 21 when right-hand member moves, pump housing left end internal pressure reduces, the soft pressure of moulding sheet 33 left ends is pushed the soft sheet of moulding to hole that collar 31 is blocked on the right, the medicinal liquid that makes the left side is not to pump housing internal reflux.34 soft sheet or the sheet rubbers moulded, the external diameter of 36 collars, collar and valve block internal diameter are tight fit, are used for moulding sheet 34 extruding and being fixed in the valve body soft.When piston ring 21 moved right, pump housing left end pressure reduced, and the soft medicinal liquid of moulding sheet 34 left sides pushes away bending deformation to the right with the soft sheet of moulding, and medicinal liquid is entered in the pump housing.When piston ring 21 was moved to the left, pump housing left end pressure increased, and moulded sheet 34 push and block left and lived the hole of input head 35 soft, and medicine can not be refluxed, and from delivery 32 outputs.The input and output check valve operation principle of right-hand member is identical with it.Be fixed with hook 38 on one side of housing, be used for housing is hung on the belt between waist or on the coat pocket.Open battery cover 18 during use, with No. 5 batteries of two joints lid that closes in the battery case of packing into.Open side cover 1 and the lid corresponding with the pump housing, the medicinal fluid bag and the pump housing that connects is respectively charged in upper shell 2 and the lower house 37, the pump housing is stuck in two draw-in grooves 30, the lid that closes is connected union joint 15 with the intravital capillary vessel of prior injection.Open selector switch 27 then, respectively operation timing button 28 and import volume set 3 pairs of importings of button number of times just import volume and at every turn importing set blanking time.Small machine 12 rotates when importing pump work, be with worm gear 6 to rotate with the worm screw 10 that motor is connected as a single entity, because worm gear 6 centre bores have screw thread, screw mandrel 9 moves right when worm gear 6 rotates, the shaft joint 5 of screw mandrel left end is being with piston rod 19 and piston ring 21 to move right together, by check valve with the medicinal liquid suction pump housing left end in the medicated bag 29, screw mandrel 9 makes the motor drive direction counter-rotating after continuing to walk to touch microswitch 8 to the right, screw mandrel 9 also is moved to the left immediately, pushing away piston ring 21 is moved to the left, the intravital medicinal liquid of pump is injected in the human body slowly through check valve body 20, and effect was identical with it when piston ring moved right.The number of times that injects is set button 3 by import volume and is set by Single-chip Controlling.Medicinal liquid in the medicinal fluid bag 29 uses up the back and takes out replacing together with the pump housing 14, and this equipment can also continue to use.

Claims (4)

1, a kind of portable continuous infusion pump, it comprises the upper shell that medicinal fluid bag is housed and the lower house that imports pump and control circuit is housed and forms, it is characterized in that: import have in the pump can move left and right piston ring, be connected with piston rod on the piston ring, piston rod links to each other with screw mandrel by shaft coupling, screw mandrel drives move left and right by the worm and gear reduction gearing mechanism, the two ends of the pump housing are equipped with feed liquor check valve and fluid check valve respectively, the feed liquor check valve links to each other with medicinal fluid bag by tube for transfusion, and the output catheter is housed on the fluid individual event valve.

2, portable continuous infusion pump as claimed in claim 1 is characterized in that: the two ends that import the pump housing are equipped with intake valve and air outlet valve respectively

3,, portable continuous infusion pump as claimed in claim 1 or 2, it is characterized in that: the mobile dependence worm and gear of piston ring drives.

4, as claim 1 or 2 or 3 described portable continuous infusion pump, it is characterized in that: control circuit is provided with selector switch, and regularly button and import volume are set button.

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