CN112618859A

CN112618859A - Liquid medicine infusion mechanism based on separation of medicine storage device and injector

Info

Publication number: CN112618859A
Application number: CN202110011667.1A
Authority: CN
Inventors: 侯景山; 黄孝民
Original assignee: Kailian Medical Technology Shanghai Co ltd
Current assignee: Kailian Medical Technology Shanghai Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-04-09

Abstract

The invention discloses a liquid medicine infusion mechanism based on separation of a medicine storage device and an injector, which comprises the medicine storage device, a reversing valve, a valve control device, the injector, a propelling mechanism and an injection needle, wherein the reversing valve is arranged on the medicine storage device; the reversing valve comprises a valve sliding block and a valve shell, and the valve sliding block is arranged in the valve shell; the valve sliding block is provided with a slot, and the valve shell is provided with more than one opening; the opening at one side of the valve shell is connected with the medicine storage device, the opening in the middle of the valve shell is connected with the injector, and the opening at the other side of the valve shell is connected with the injection needle; the valve control device comprises a valve slide block clamp and an axial electromagnet. The invention can be fully miniaturized and miniaturized, has a small pipe diameter, improves the precision according to the proportion of the area ratio, reduces the volume of the pump body on the premise of keeping enough dosage, is convenient for a user to wear, adopts flexible pipelines for connection among the medicine storage device, the reversing valve and the injector, has larger layout freedom degree, and reduces the use cost of the user.

Description

Liquid medicine infusion mechanism based on separation of medicine storage device and injector

Technical Field

The invention relates to the field of medicine, in particular to a liquid medicine infusion mechanism based on separation of a medicine storage device and an injector.

Background

At present, gear motor drives the lead screw and promotes medicine storage device and realize the liquid medicine infusion mostly in all kinds of medical treatment formula infusion pumps that apply, as shown in fig. 1, traditional infusion pump comprises medicine storage device 17, fixed container 18, piston 19, gear and slip screw 20, lead screw 21 and gear motor 22, and at infusion pump during operation, the medicine storage device that is full of the liquid medicine is arranged in fixed container and is passed through piston and lead screw in close contact with, and gear motor drives the slip screw rotation through the gear. Because the screw nut is in a fixed state, under the reaction force of the screw nut, the screw rod drives the piston to push forwards under the driving of the screw nut, and the rotary motion of the motor is converted into linear motion, so that the infusion operation of the liquid medicine is realized; but the space utilization rate is low, the infusion precision is difficult to improve, the layout of the pump body is difficult, and the use by a user is not facilitated.

Disclosure of Invention

The invention aims to solve the technical problems that a design mode of combining a traditional infusion pump medicine storage device and a traditional syringe is abandoned, the medicine storage device and the syringe are independently designed, the flow direction of liquid medicine is controlled by utilizing a micro valve, the syringe is miniaturized and miniaturized, the internal space of a pump body can be fully utilized, the medicine storage device and other parts are flexibly designed and distributed, and the contradiction between the liquid medicine storage amount and the space utilization rate is solved.

The invention relates to a liquid medicine infusion mechanism based on separation of a medicine storage device and an injector, which is realized by the following technical scheme: comprises a medicine storage device, a reversing valve, a valve control device, an injector, a propelling mechanism and an injection needle;

the reversing valve comprises a valve sliding block and a valve shell, and the valve sliding block is arranged in the valve shell; the valve sliding block is provided with a slot, and the valve shell is provided with more than one opening; the opening at one side of the valve shell is connected with the medicine storage device, the opening in the middle of the valve shell is connected with the injector, and the opening at the other side of the valve shell is connected with the injection needle; the valve control device comprises a valve slide block clamp and an axial electromagnet; the valve sliding block fixture is arranged on the valve sliding block, and the axial electromagnet is arranged at one end of the valve sliding block fixture.

As a preferred technical scheme, the injector comprises an injector container, an injector piston and a piston connecting rod; the injector piston is arranged in the injector container, and the piston connecting rod is arranged on the injector piston; the propulsion mechanism is mounted on the piston connecting rod.

The propulsion mechanism comprises more than one bearing seat and a speed reducing motor; a screw rod is arranged between more than one bearing seat, and a connecting rod clamp is arranged on the screw rod; the propulsion mechanism is connected with the piston connecting rod through the connecting rod clamp.

As a preferred technical scheme, the speed reducing motor is arranged on one side of the screw rod, and a motor shaft of the speed reducing motor and the screw rod are both provided with gears; the motor shaft of the speed reducing motor is meshed with the gear on the screw rod.

The invention has the beneficial effects that: the invention can be fully miniaturized and miniaturized, has a small pipe diameter, improves the precision according to the proportion of the area ratio, reduces the volume of the pump body on the premise of keeping enough dosage, is convenient for a user to wear, adopts flexible pipelines for connection among the medicine storage device, the reversing valve and the injector, has larger layout freedom degree, and reduces the use cost of the user.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a prior art diagram;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the medical fluid extraction process of the present invention;

fig. 4 is a schematic view illustrating a liquid medicine injection process according to the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-3, the liquid medicine infusion mechanism based on the separation of the medicine storage device and the injector of the invention comprises a medicine storage device 1, a reversing valve, a valve control device, an injector, a propelling mechanism and an injection needle 6;

the reversing valve comprises a valve sliding block 2 and a valve shell 3, and the valve sliding block 2 is arranged in the valve shell 3; the valve sliding block 2 is provided with a slot 15, and the valve shell 3 is provided with more than one opening 16; the opening 16 on one side of the valve shell 3 is connected with the medicine storage device 1, the opening 16 in the middle of the valve shell 3 is connected with the injector, the opening 16 on the other side of the valve shell 3 is connected with the injection needle 6, and the pipeline switching of extracting the liquid medicine from the medicine storage device 1 and infusing the liquid medicine to the patient is realized through the movement of the valve slide block 2; the valve control device comprises a valve slide block clamp 4 and an axial electromagnet 5; the valve slide block clamp 4 is arranged on the valve slide block 2, the axial electromagnet 5 is arranged at one end of the valve slide block clamp 4, and the valve control device can control the moving direction of the reversing valve through an electric signal to realize the switching of valve pipelines; when the axial electromagnet 5 is connected with a forward power supply, the valve slide block 2 clamp is pushed, the valve slide block clamp 4 pushes the valve slide block 2 to move leftwards or rightwards to communicate with a left pipeline or a right pipeline, and when the axial electromagnet 5 is connected with a reverse power supply, the reverse operation can be realized.

In this embodiment, the syringe includes a syringe container 7, a syringe piston 8, and a piston rod 9; the injector piston 8 is arranged in the injector container 7, and the piston connecting rod 9 is arranged on the injector piston 8; the pushing mechanism is arranged on the piston connecting rod 9, and the injector is used as a temporary storage space when extracting the liquid medicine and carries out infusion operation under the driving of the speed reducing motor.

In the present embodiment, the propulsion mechanism includes one or more bearing blocks 11 and a reduction motor 14; a screw rod 12 is arranged between more than one bearing seat 11, and a connecting rod clamp 10 is arranged on the screw rod 12; the propulsion mechanism is connected to the piston rod 10 by a rod clamp 10.

In this embodiment, the gear motor 14 is disposed at one side of the screw rod 12, and a motor shaft of the gear motor 14 and the screw rod 12 are both provided with a gear 13; the motor shaft of the reducing motor 14 is meshed with the gear 13 on the screw rod 12, the rotating motion of the reducing motor 14 is converted into the reciprocating motion of the injector, and the extraction and injection of the liquid medicine are realized under the coordination of the reversing valve.

The working principle is as follows:

when injection is needed, the liquid medicine is required to be extracted from the medicine storage device, the valve is communicated with the medicine storage device pipeline and the injector pipeline, the screw rod pulls the injector piston outwards under the driving action of the motor, negative pressure is formed in the injector, and the liquid medicine is extracted from the medicine storage device into the injector; when the syringe is filled with the liquid medicine, the internal pressure and the external pressure are balanced, and the liquid medicine is stopped being extracted;

after the liquid medicine extraction is accomplished, valve UNICOM syringe needle pipeline and syringe pipeline, the syringe piston is inside to be impeld under the drive of motor, with the liquid medicine from syringe propelling movement to patient internal.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a liquid medicine infusion mechanism based on medicine storage device and syringe separation which characterized in that: comprises a medicine storage device (1), a reversing valve, a valve control device, an injector, a propelling mechanism and an injection needle (6);

the reversing valve comprises a valve sliding block (2) and a valve shell (3), and the valve sliding block (2) is arranged in the valve shell (3); the valve sliding block (2) is provided with a slot (15), and the valve shell (3) is provided with more than one opening (16); an opening (16) at one side of the valve shell (3) is connected with the medicine storage device (1), an opening (16) in the middle of the valve shell (3) is connected with the injector, and an opening (16) at the other side of the valve shell (3) is connected with the injection needle (6); the valve control device comprises a valve slide block clamp (4) and an axial electromagnet (5); the valve sliding block fixture (4) is installed on the valve sliding block (2), and the axial electromagnet (5) is installed at one end of the valve sliding block fixture (4).

2. The separate drug solution infusion mechanism based on a drug reservoir and syringe of claim 1, wherein: the injector comprises an injector container (7), an injector piston (8) and a piston connecting rod (9); the injector piston (8) is arranged in the injector container (7), and the piston connecting rod (9) is arranged on the injector piston (8); the propelling mechanism is arranged on the piston connecting rod (9).

3. The separate drug solution infusion mechanism based on a drug reservoir and syringe of claim 1, wherein: the propulsion mechanism comprises more than one bearing seat (11) and a speed reducing motor (14); a screw rod (12) is arranged between the more than one bearing seats (11), and a connecting rod clamp (10) is arranged on the screw rod (12); the propulsion mechanism is connected with the piston connecting rod (10) through a connecting rod clamp (10).

4. The separate drug solution infusion mechanism based on a drug reservoir and syringe of claim 1, wherein: the speed reducing motor (14) is arranged on one side of the screw rod (12), and a motor shaft of the speed reducing motor (14) and the screw rod (12) are both provided with gears (13); and a motor shaft of the speed reducing motor (14) is meshed with a gear (13) on the screw rod (12).