A kind of insulin pumpTechnical field
This utility model relates to a kind of insulin pump.
Background technology
At present treatment and the control to diabetes mainly contains two kinds of methods: one is conventional method treatment, every day 1-2 insulin injection and blood sugar monitoring; Another kind is to adopt intensive treatment method, repeatedly carries out blood sugar monitoring every day, and adjusts diet and insulin dosage, makes as far as possible blood glucose approach normal level, and mostly this kind of method is to realize with insulin pump.Existing insulin pump generally comprises disposable use conducting tube, medicine storage, power set, due to existing medicine storage and insulin pump housing seal poor, in the time that user is had a bath, insulin pump must be pulled down, wear again after after a bath, increase patient's misery.
Summary of the invention
The technical problems to be solved in the utility model is to provide the insulin pump that a kind of medicine storage good airproof performance, the Shi Buxu that has a bath are pulled down.
For solving the problems of the technologies described above, this utility model comprises insulin pump housing, in insulin pump housing, be provided with drug storage tank and motor mounting groove, in described drug storage tank, medicine storage is installed, in described motor mounting groove, motor and deceleration device are installed, it is characterized in that described motor is bi-directional drive direct current generator, described deceleration device comprises intermeshing the first gear successively, the second gear, the 3rd gear and the 4th gear, described the first gear is arranged on the output shaft of motor, the inside groove of described the 4th gear is regular polygon, the screw mandrel that its rear end and inside groove shape adapt is installed in the inside groove of the 4th gear, described the first gear, the second gear, the 3rd gear and the stacked setting of the 4th gear, the front end of described screw mandrel can with medicine storage in piston be spirally connected, the housing at the corresponding drug storage tank of described insulin pump housing place is transparent shell, described medicine storage comprises transparent medicine-storing tube, the outer surface of described medicine-storing tube is provided with graduation mark, in medicine-storing tube, be provided with piston, the rear end of piston is provided with connecting hole, in connecting hole, be provided with the female thread for being connected with push rod or screw mandrel, the inner surface of described medicine-storing tube rear end is provided with the boss for preventing that piston from deviating from of annular, the outer surface of described medicine-storing tube is provided with for its spiral shell dress is fixed on to the screw thread in drug storage tank, the front end of described medicine-storing tube is installed with the end shield of being made up of silica gel, and the outer surface of end shield is step surface, and described insulin pump housing is provided with the hole clipping adapting with end shield outer surface.
The rear end face of described boss is the conical surface, and the conical surface is reduced gradually by rear end forward end diameter; The front end face of described boss is the plane perpendicular to medicine-storing tube axis.
Described medicine-storing tube front end is installed with grug transportation tube joint, the outer surface of medicine-storing tube barrel front end portion is the conical surface, the inner surface of described grug transportation tube joint is the conical surface adapting with the medicine-storing tube barrel front end portion conical surface, the outer surface of described grug transportation tube joint is equipped with and clamps platform, and on described end shield, correspondence clamps platform and is provided with draw-in groove.
The rear end of described medicine-storing tube is installed with ringwise silicagel pad, and the internal diameter of described silicagel pad is identical with internal diameter and the external diameter of medicine-storing tube respectively with external diameter.
In described piston, be installed with the adapter sleeve of being made by acetal resin, in described adapter sleeve, be provided with connecting hole.
In described piston, be provided with two or more card holding troughs, the longitudinal section of described card holding trough is inverted cone, and the outer surface of described adapter sleeve is provided with the annular snap ear that can snap in card holding trough.
The inner surface of described medicine-storing tube barrel front end portion is cambered surface, and the leading section of described piston is the conical surface.
The outer surface of described piston is provided with annular mounting groove, is provided with O RunddichtringO in mounting groove.
The flank of tooth of described the first gear tooth is provided with projection, and described projection is parallel to the centrage setting of the first gear, forms line and engage between described the first gear and the second gear, and the hardness of described the first gear is greater than the hardness of the second gear.
Described screw mandrel is made up of stainless steel material.
Adopt after said structure, when use, first push rod and piston are spirally connected, at the front end connecting needle of medicine-storing tube, after getting quantitative medicine, push rod is unloaded, then medicine-storing tube spiral shell is contained in drug storage tank and screw mandrel is connected with adapter sleeve, the silicagel pad of medicine-storing tube rear end is close to and on housing, makes medicine-storing tube back-end sealing, thereby the end shield of medicine-storing tube front end and the sealing of insulin pump housing hole clipping make medicine-storing tube front end and housing seal, thereby ensure the sealing that medicine storage is installed, anti-sealing enters impact use of the present utility model in housing.It is simple in structure, compact, reasonable in design that this insulin pump has, and volume is little, lightweight, good airproof performance, advantage easy to use.
Brief description of the drawings
Below in conjunction with the drawings and the specific embodiments, this utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of medicine-storing tube;
Fig. 3 is the structural representation of piston.
Detailed description of the invention
As shown in Figure 1 to Figure 3, insulin pump comprises insulin pump housing 1, in insulin pump housing 1, be provided with drug storage tank and motor mounting groove, in drug storage tank, medicine storage is installed, motor 16 and deceleration device are installed in motor mounting groove, aforementioned motor 16 is bi-directional drive direct current generator, deceleration device comprises intermeshing the first gear 11 successively, the second gear 12, the 3rd gear 13 and the 4th gear 14, the first gear 11 is arranged on the output shaft of motor 16, the inside groove of the 4th gear 14 is square, the screw mandrel 15 that its rear end and inside groove shape adapt is installed in the inside groove of the 4th gear 14, the cross section that is screw mandrel 15 rear ends is square, this kind of syndeton screw mandrel 15 can move with the 4th gear 14 well, prevent that both power from connecting unstable, the first gear 11, the second gear 12, the 3rd gear 13 and the stacked setting of the 4th gear 14, can make this utility model in limited space, the rotating speed of motor be reduced and be sent to screw mandrel 15, ensure the stability of transmission.Because the rotating speed of the first gear 11 and the second gear 12 is very fast, therefore be also two the most serious gears that wear and tear, on the flank of tooth of first gear 11 gear teeth, projection is set, projection is parallel to the centrage setting of the first gear 11, make to form line between the first gear 11 and the second gear 12 and engage, can effectively reduce the friction between gear, slow down gear impaired, in the service life that extends gear, wherein the hardness of the first gear 11 is greater than the hardness of the second gear 12.Screw mandrel 15 is made up of stainless steel material, the front end of screw mandrel 15 can with medicine storage in piston 4 be spirally connected.
The housing at the corresponding drug storage tank of insulin pump housing place is transparent shell, medicine storage comprises transparent medicine-storing tube 21, the outer surface of medicine-storing tube 21 is provided with graduation mark, in medicine-storing tube 21, be provided with piston 4, the inner surface of medicine-storing tube 21 barrel front end portions is cambered surface, and the leading section of piston 4 is the conical surface, and piston 4 is different from the end face of cylindrical shell, piston 4 is not easy to be stuck in cylindrical shell, uses more convenient.In piston 4, be installed with the adapter sleeve 5 of being made by acetal resin, in adapter sleeve 5, be provided with connecting hole 51, in connecting hole 51, be provided with the female thread for being connected with push rod or screw mandrel 15.In piston 4, be provided with two or more card holding troughs, the longitudinal section of card holding trough is inverted cone, and the outer surface of adapter sleeve 5 is provided with the annular snap ear 52 that can snap in card holding trough, and the card holding trough of inverted cone can prevent that adapter sleeve 5 from deviating under the drive of screw mandrel 15 in piston 4.For the sealing that ensures that piston 4 is connected with medicine-storing tube 21, be provided with annular mounting groove at the outer surface of piston 4, mounting groove is two, its interval arranges, and is provided with O RunddichtringO 6 in each mounting groove.The inner surface of medicine-storing tube 21 rear ends is provided with the boss 24 for preventing that piston 4 from deviating from of annular, and the rear end face of boss 24 is the conical surface, and the conical surface is reduced gradually by rear end forward end diameter; The front end face of boss 24 is the plane perpendicular to medicine-storing tube 21 axis, and boss 24 can well prevent that piston 4 from deviating from, and strengthens the convenience using.The outer surface of medicine-storing tube 21 is provided with for its spiral shell dress is fixed on to the screw thread in drug storage tank; The front end of described medicine-storing tube 21 is installed with the end shield 23 of being made up of silica gel, and the outer surface of end shield 23 is step surface, and insulin pump housing 1 is provided with the hole clipping adapting with end shield 23 outer surfaces.
Medicine-storing tube 21 front ends are installed with grug transportation tube joint 25, the outer surface of medicine-storing tube 21 barrel front end portions is the conical surface, the inner surface of grug transportation tube joint 25 is the conical surface adapting with the medicine-storing tube 21 barrel front end portion conical surfaces, the outer surface of grug transportation tube joint 25 is equipped with and clamps platform 26, and on end shield 23, correspondence clamps platform 26 and is provided with draw-in groove.The rear end of medicine-storing tube 21 is installed with ringwise silicagel pad 22, and the internal diameter of silicagel pad 22 is identical with internal diameter and the external diameter of medicine-storing tube 21 respectively with external diameter, and silicagel pad 22 can be well by the rear end of medicine-storing tube 21 and housing seal.
In insulin pump housing 1, be also provided with battery compartment, battery 3 is installed in battery compartment, battery 3 is motor, control system and LCDs power supply.LCDs is arranged on the inner side of insulin pump housing 1, and on insulin pump housing 1, corresponding LCDs is provided with transparency protected window.Insulin pump operation keyboard is installed on insulin pump housing 1, the electrical connection between battery, motor, control system, LCDs and insulin pump operation keyboard and control system be set to prior art, do not repeat them here.
When use, first push rod and piston 4 are spirally connected, at the front end connecting needle of medicine-storing tube 21, after getting quantitative medicine, push rod is unloaded, then medicine-storing tube 21 spiral shells are contained in drug storage tank and screw mandrel 15 is connected with adapter sleeve 5, the silicagel pad 22 of medicine-storing tube 21 rear ends is close to and on housing, makes medicine-storing tube 21 back-end sealings, thereby the end shield of medicine-storing tube 21 front ends 23 makes medicine-storing tube 21 front ends and housing seal with the 1 hole clipping sealing of insulin pump housing, thereby ensure the sealing that medicine storage is installed, anti-sealing enters impact use of the present utility model in housing.When work, control system timing is sent instruction to motor infusion control system, is produced to move accurately and drive piston 4 to move insulin is inputted to human body at regular time and quantity accurately by motor.Motor forward driven gear rotates, and drives screw mandrel 15 to rotate, and screw mandrel 15 promotes piston 4 and pushes ahead along the inner chamber of medicine storage, and the insulin in medicine storage is injected to human body at regular time and quantity by grug transportation tube joint 25 and the infusion pipeline of the medicine storage port of export.In the time that direct current generator overturns, screw mandrel 15 drives piston 4 to move backward along the inner chamber of medicine storage, is returned to original position, i.e. reset motor.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model.Previous embodiment has been described in detail this utility model, and for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.In every case within inventive concept scope of the present utility model, any amendment of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.