CN108744162A - Injector assembly - Google Patents

Injector assembly Download PDF

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Publication number
CN108744162A
CN108744162A CN201810823562.4A CN201810823562A CN108744162A CN 108744162 A CN108744162 A CN 108744162A CN 201810823562 A CN201810823562 A CN 201810823562A CN 108744162 A CN108744162 A CN 108744162A
Authority
CN
China
Prior art keywords
electric machine
shell
inner screw
machine assembly
screw sheath
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810823562.4A
Other languages
Chinese (zh)
Inventor
任雪梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201810823562.4A priority Critical patent/CN108744162A/en
Publication of CN108744162A publication Critical patent/CN108744162A/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31525—Dosing
    • A61M5/31528—Dosing by means of rotational movements, e.g. screw-thread mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31546—Electrically operated dose setting, e.g. input via touch screen or plus/minus buttons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2006—Having specific accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M2005/31588—Constructional features or modes of drive mechanisms for piston rods electrically driven

Abstract

The present invention provides a kind of injector assembly, which is characterized in that including dosage load button, control chip, injection tube assembly, electric machine assembly, external thread sleeve and inner screw sheath；The injection tube assembly includes shell, the piston being set in shell and the push rod being connect with piston, the tail end of the shell is detachably connected with the first end of the inner screw sheath, the electric machine assembly is set to the tail end of the shell and is connect with the end of the push rod, which connect with the shaft of the electric machine assembly；The external thread sleeve is connect with the inner screw sheath spiral so that it can advance or retreat along the axial screw of the inner screw sheath, to drive the push rod to be advanced axially relative or retreat, the dosage load button is set to one end far from the injection tube assembly of inner screw sheath and is connect with control chip communication, the dosage that the control chip is used to be inputted according to dosage load button controls electric machine assembly electricity rotation corresponding angle.

Description

Injector assembly
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of injector assembly.
Background technology
In the prior art, using syringe when carrying out Liquid extracting or injection, operating personnel are often by eye Observation injection volume or extraction amount are gone, and hand, when operating its push rod, the advance of the push rod or backway also can not essences Really control.
Therefore, the prior art is defective, needs to improve.
Invention content
The embodiment of the present invention provides a kind of injector assembly, has the advantageous effect of quantitative extraction or injecting fluid.
The present invention provides a kind of injector assemblies, including dosage load button, control chip, injection tube assembly, motor Component, external thread sleeve and inner screw sheath；
The injection tube assembly includes shell, the piston being set in shell and the push rod being connect with piston, the shell The first end of tail end and the inner screw sheath be detachably connected, the electric machine assembly be set to the tail end of the shell and with the push rod End connects, which connect with the shaft of the electric machine assembly；
The external thread sleeve connect with the inner screw sheath spiral so that its can along the axial screw of the inner screw sheath advance or Person retreats, and to drive the push rod to be advanced axially relative or retreat, which is set to separate note of inner screw sheath It penetrates one end of tube assembly and is connect with control chip communication, the dosage which is used to be inputted according to dosage load button, Control electric machine assembly electricity rotation corresponding angle.
Further include a metal screw in injector assembly of the present invention, which passes through the metal screw It is detachably connected with inner screw sheath realization, the first conductive metal layer is provided on the outer wall of the external thread sleeve, the shell Side wall and tail end on be provided with the second conductive metal layer, the internal thread structure of the inner screw sheath is conductive metal, the outer spiral shell The external thread structure of line set is conductive metal；
One positive output port of the dosage load button passes sequentially through first conductive metal layer, the second conductive metal layer It is electrically connected with a positive input port of the electric machine assembly；
One negative output port of the dosage load button passes sequentially through the internal thread structure, external thread structure and the motor One negative input port of component is electrically connected.
In injector assembly of the present invention, the end of the electric machine assembly connects with the circumferential activity in the end of the push rod It connects, and axial restraint, the end of the electric machine assembly and the shell are circumferentially fixed.
In injector assembly of the present invention, the position for closing on end of electric machine assembly is provided with accommodating chamber and at this End set has the through-hole being connected to the accommodating chamber, and a rotatably round connecting plate, the connecting plate are provided in the accommodating chamber Axis at offer an irregularly-shaped hole, the end of the push rod, which passes through the through-hole and crosses win cooperation with the irregularly-shaped hole on the connecting plate, to be connected It connects.
In injector assembly of the present invention, it is provided with limit protrusion on the tail end of the shell, the electric machine assembly End set has limiting groove, which is plugged in the limiting groove.
The present invention by dosage load button control motor rotational angle come realize to the push rod advance or retreat away from From accurately control, quantitative extract or injecting fluid may be implemented.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the injector assembly in the embodiment of the present invention.
Fig. 2 is the annexation figure of push rod and the electric machine assembly.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic. " first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.? In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can Can also be to be electrically connected or can mutually communicate to be mechanical connection；It can be directly connected, it can also be by between intermediary It connects connected, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill of this field For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower" It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter, This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with Recognize the application of other techniques and/or the use of other materials.
Please referring to Fig. 1, Fig. 1 is the structural schematic diagram of the injector assembly in one embodiment of the invention, the injector assembly, Including control chip, dosage load button 60, injection tube assembly 10, electric machine assembly 20, external thread sleeve 30 and inner screw sheath 40.
Wherein, which includes shell 11, the piston 12 being set in shell 11, is pushed away with what piston 12 was connect Bar 13, be set to the shell 11 head end syringe needle 14.The tail end of the shell 11 and the first end of the inner screw sheath 40 are detachable Connection, such as can disassemble and use and snap connection, or in the present embodiment, the first end of the tail end of the shell 11 and the inner screw sheath 40 It is detachably connected by the metal screw 50 realization.
The shell is detachably connected by the metal screw and inner screw sheath realization, the outer wall of the external thread sleeve On be provided with the first conductive metal layer, be provided with the second conductive metal layer on the side wall and tail end of the shell, the inner screw sheath Internal thread structure be conductive metal, the external thread structure of the external thread sleeve is conductive metal；One of the dosage load button Positive output port passes sequentially through the positive input port electricity of first conductive metal layer, the second conductive metal layer and the electric machine assembly Connection；One negative output port of the dosage load button passes sequentially through the internal thread structure, external thread structure and the control core Piece is electrically connected, which is electrically connected with a negative input port of the electric machine assembly.
The electric machine assembly 20 is set to the tail end of the shell 11 and is connect with the end of the push rod 13, the external thread sleeve 30 with The shaft of the electric machine assembly 20 connects；The external thread sleeve 30 is connect with 40 spiral of inner screw sheath so that it can be along the internal thread The axial screw of set 40 is advanced or is retreated, and to drive the push rod 13 to be advanced axially relative or retreat, which sets Be placed on the electric machine assembly 20 for controlling the rotation angle of the electric machine assembly 20, so control the push rod 13 advance or after Move back distance.The control chip is used for the dosage that is inputted according to dosage load button, calculates the stroke distances of the push rod, and according to The trip distance calculates the electric machine assembly and needs the angle rotated, then controls electric machine assembly electricity rotation corresponding angle.
In the present embodiment, the end of the electric machine assembly 20 is circumferentially flexibly connected with the end of the push rod 13, and axial solid Fixed, the end of the electric machine assembly 20 and the shell 11 are circumferentially fixed.For example, limit can be arranged on the end cap of the shell 11 Accordingly limit protrusion is arranged on the end of the electric machine assembly 20 in hole.The limit protrusion is plugged in the limit hole.
The position for closing on end of electric machine assembly 20 is provided with accommodating chamber 21 and has and the accommodating chamber 21 in the end set The through-hole of connection is provided with a rotatably round connecting plate 22 in the accommodating chamber 21, one is offered at the axis of the connecting plate Irregularly-shaped hole, the end of the push rod 13, which passes through the through-hole and crosses win with the irregularly-shaped hole on the connecting plate 22, to be connected.And the connection The diameter of plate 22 is more than the diameter of the through-hole.
The dosage load button 60 includes control circuit and power supply, which can be battery.
The present invention realizes the control of the forward or backward distance of the push rod by the dosage load button and electric machine assembly System, so as to realize quantitative extraction liquid or calibrated shot liquid.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
In conclusion although the present invention is disclosed above with preferred embodiment, above preferred embodiment is not to limit The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention Decorations, therefore protection scope of the present invention is subject to the range that claim defines.

Claims (5)

1. a kind of injector assembly, which is characterized in that including dosage load button, control chip, injection tube assembly, motor group Part, external thread sleeve and inner screw sheath；
The injection tube assembly includes shell, the piston being set in shell and the push rod being connect with piston, the tail of the shell The first end with the inner screw sheath is held to be detachably connected, which is set to the tail end of the shell and the end with the push rod Connection, the external thread sleeve are connect with the shaft of the electric machine assembly；
The external thread sleeve connect with the inner screw sheath spiral so that its can along the axial screw of the inner screw sheath advance or after It moves back, to drive the push rod to be advanced axially relative or retreat, which is set to separate injection-tube of inner screw sheath One end of component and connect with control chip communication, which is used for the dosage that is inputted according to dosage load button, controls The electric machine assembly electricity rotates corresponding angle.
2. injector assembly according to claim 1, which is characterized in that further include a metal screw, which passes through The metal screw is detachably connected with inner screw sheath realization, and the first conductive gold is provided on the outer wall of the external thread sleeve Belong to layer, the second conductive metal layer is provided on the side wall and tail end of the shell, the internal thread structure of the inner screw sheath is conduction The external thread structure of metal, the external thread sleeve is conductive metal；
One positive output port of the dosage load button passes sequentially through first conductive metal layer, the second conductive metal layer and is somebody's turn to do One positive input port of electric machine assembly is electrically connected；
One negative output port of the dosage load button passes sequentially through the internal thread structure, external thread structure and the electric machine assembly A negative input port electrical connection.
3. injector assembly according to claim 1, which is characterized in that the end of the electric machine assembly and the end of the push rod Portion is circumferentially flexibly connected, and axial restraint, the end of the electric machine assembly and the shell are circumferentially fixed.
4. injector assembly according to claim 3, which is characterized in that the position for closing on end of electric machine assembly is provided with Accommodating chamber and there is the through-hole being connected to the accommodating chamber in the end set, a rotatably round connection is provided in the accommodating chamber Plate, offers an irregularly-shaped hole at the axis of the connecting plate, the end of the push rod pass through the through-hole and with the abnormity on the connecting plate Hole crosses win and is connected.
5. injector assembly according to claim 3, which is characterized in that it is provided with limit protrusion on the tail end of the shell, The end set of the electric machine assembly has limiting groove, which is plugged in the limiting groove.
CN201810823562.4A 2018-07-25 2018-07-25 Injector assembly Withdrawn CN108744162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810823562.4A CN108744162A (en) 2018-07-25 2018-07-25 Injector assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810823562.4A CN108744162A (en) 2018-07-25 2018-07-25 Injector assembly

Publications (1)

Publication Number Publication Date
CN108744162A true CN108744162A (en) 2018-11-06

Family

ID=63971112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810823562.4A Withdrawn CN108744162A (en) 2018-07-25 2018-07-25 Injector assembly

Country Status (1)

Country Link
CN (1) CN108744162A (en)

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Application publication date: 20181106