CN106964027A - The interface of the instrument used for injection of injector for medical purpose - Google Patents

The interface of the instrument used for injection of injector for medical purpose Download PDF

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Publication number
CN106964027A
CN106964027A CN201710345517.8A CN201710345517A CN106964027A CN 106964027 A CN106964027 A CN 106964027A CN 201710345517 A CN201710345517 A CN 201710345517A CN 106964027 A CN106964027 A CN 106964027A
Authority
CN
China
Prior art keywords
overcoat
core bar
injection
circumferential
projection
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.)
Granted
Application number
CN201710345517.8A
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Chinese (zh)
Other versions
CN106964027B (en
Inventor
张奕奕
张祖仁
徐维华
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.)
Shanghai Best Medical Instrument Co Ltd
Original Assignee
Shanghai Best Medical Instrument Co Ltd
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 Shanghai Best Medical Instrument Co Ltd filed Critical Shanghai Best Medical Instrument Co Ltd
Priority to CN201710345517.8A priority Critical patent/CN106964027B/en
Publication of CN106964027A publication Critical patent/CN106964027A/en
Priority to PCT/CN2017/109253 priority patent/WO2018209899A1/en
Priority to US16/082,169 priority patent/US11154664B2/en
Application granted granted Critical
Publication of CN106964027B publication Critical patent/CN106964027B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • 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
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • 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
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables

Abstract

A kind of interface of the instrument used for injection of injector for medical purpose, realize the interface that instrument used for injection is made up of the conehead and circular cone inclined-plane of overcoat and the taper lip and bellmouth of instrument used for injection, when the bellmouth of injection needle is inserted on the conehead of overcoat, injection needle is fixed on the conehead of overcoat, reach by inject be needled into human body muscle or it is intravascular when avoid the needle point of injection needle from swinging purpose, so as to avoid causing operational error；After use of the syringe, only need to pinch the taper lip of the flat injection needle away from injection needle, injection needle can depart from the conehead of the overcoat of syringe, both the injection needle carried disease germs can be put into collecting box, the injection needle carried disease germs can also be taken in the utensil intracavitary of the core bar of syringe, the purpose that syringe needle is avoided contact in operating process is reached, so as to avoid the injection needle carried disease germs from injuring human body.

Description

The interface of the instrument used for injection of injector for medical purpose
Technical field
The present invention relates to various injector for medical purpose, various disposable sterilized syringes are related specifically to, also especially It is related to the disposable sterilized syringe of various pre-filled medicinal liquids, relates more specifically to various self-destructed disposables using sterile Syringe, the self-destructed disposable also related more specifically to various pre-filled medicinal liquids uses asepsis injector, also relate more specifically to Various safety-type disposable sterilized syringes, also relate more specifically to the safety-type disposable nothing to various pre-filled medicinal liquids Bacterium syringe, also relates more specifically to various safety self-destructing disposable sterilized syringes, also relates more specifically to various The safety self-destructing disposable sterilized syringe of pre-filled medicinal liquid.
Background technology
Various injector for medical purpose can be used for injecting and export various liquid, can be used for aspirating various liquid, may be used also For being mixed various liquid or mixing various liquid with powder, pumping liquid or mixing in container can be also used for Various liquid or mixing liquid and powder, can be also used for rinsing or cleaning of objects.Plugged on the conehead of various injector for medical purpose After injection needle, various medicaments can be expelled in human body or the subcutaneous of animal, muscle, blood vessel or other histoorgans, also Various liquid can be aspirated out of human body or the histoorgan of animal.Plugged on the conehead of various injector for medical purpose after fog-spray nozzle, On the mucous membrane or other histoorgans that various medicaments can be sent forth to human body or animal.
Known conventional injector for medical purpose includes overcoat and core bar.Enough transparencies are cased with outside.It is cased with overcoat cavity outside. The overcoat cavity end opening before and after overcoat respectively.There is back cover portion the front end of overcoat cavity.Before the back cover portion of overcoat cavity There is conehead at end.The conehead of overcoat can be outer cone joint, or outer cone locked joints.During the conehead of overcoat can be The conehead of hair style, or the conehead of inclined hair style.There is cone head hole in conehead.Cone head hole and overcoat cavity insertion.In overcoat There is overcoat crimping at rear portion.There is volume scale on the outer surface of overcoat.The rear end of core bar has by hand, and there is sealing ring front portion.Core bar Sealing ring inserted at overcoat cavity open rearward end in overcoat cavity after, manipulate core bar can make sealing ring empty in overcoat by hand Intracavitary is moved forward and backward, and the sealing of the outer wall of sealing ring and the inwall formation injector for medical purpose of overcoat cavity coordinates.
The first unsatisfactory place of conventional injector for medical purpose is, after disposable sterilized syringe use, band The injection needle of bacterium is exposed outside, easily cause serious infection to injure human body, also, due to the overcoat of syringe needle and syringe Conehead engagement is tighter, and the action that both hands shed syringe needle and time set sheath closure syringe needle is to cause medical personnel to occur pricking wound most High-risk action.World Health Organization WHO reported just have within every 30 seconds a medical personnel to be contaminated syringe needle and stab in 1999.The Two kinds of unsatisfactory places are, disposable sterilized syringe and injection needle with sheath are separated in packing box； Need first to take out syringe from packing box when in use, then the injection needle with sheath is taken out from packing box, then Remove after sheath by injection needle install on the injector；After use, it is necessary to which injection needle is removed from syringe, then find shield Set entangles injection needle, or is directly entangled the injection needle installed on the injector with sheath, is injured to prevent exposed injection needle Human body；Whole operation process is cumbersome, and also easily user of service is damaged.The third unsatisfactory place is, once Property using asepsis injector by after use, reuse disposable sterilized syringe can harmful to human health.
United States Patent (USP) US20120296277A1, US20150174339A1, US20150314079A1, The various safety-type disposable sterilized syringes introduced in US20160008554A1 and US20160271340A1, are being used Afterwards, the injection needle carried disease germs is taken in the overcoat cavity of syringe using various methods, it is to avoid the injection needle carried disease germs is made to human body Into serious injury.The first unsatisfactory place of above-mentioned various injector for medical purpose is, safety-type disposable sterile note The part of emitter is more more than the part of conventional disposable sterilized syringe more complicated, and the overall volume of injector for medical purpose is more Greatly, assemble also more difficult, therefore production cost is much higher.Second of unsatisfactory place of above-mentioned various injector for medical purpose It is that the chamber that fills of safety-type disposable sterilized syringe has multiple parts, and complete Inside Syringe is difficult to during topping up The gas for filling chamber, can human body intravascular generation aeroembolism, human body is damaged.Above-mentioned various injector for medical purpose The third unsatisfactory place be that after safety-type disposable sterilized syringe use, most of core bar stretches out overcoat, shape It is larger into the overall volume after use, follow-up destroy is made troubles.The 4th kind of above-mentioned various injector for medical purpose makes us Dissatisfied place is to coordinate between the injection needle and overcoat of safety-type disposable sterilized syringe for gap, will disposably make With the injection of asepsis injector be needled into human body muscle and it is intravascular when, the needle point of injection needle is easily swung, cause behaviour Slip up.
By above-mentioned it will be clear that known injector for medical purpose also needs to be improved further so that injector for medical purpose Production cost it is lower, injector for medical purpose convenience more secure when used, injector for medical purpose is more easy to destroy after.
The content of the invention
The first object of the present invention is to propose a kind of injector for medical purpose, realizes conehead and circular cone inclined-plane and note by overcoat The taper lip and bellmouth for penetrating the instrument used for injection of pin or fog-spray nozzle constitute the interface of instrument used for injection, are inserted in the bellmouth of injection needle When on the conehead of overcoat, injection needle is fixed on the conehead of overcoat, and the muscle or blood vessel for being needled into human body will be injected by reaching The purpose for avoiding the needle point of injection needle to swing when interior, so as to avoid causing operational error；After injector for medical purpose use, only The taper lip of the flat injection needle away from injection needle need to be pinched, injection needle can depart from the conehead of the overcoat of injector for medical purpose, both The injection needle carried disease germs can be put into collecting box, the injection needle carried disease germs can also be taken in the utensil of the core bar of injector for medical purpose Intracavitary, reaches the purpose that syringe needle is avoided contact in operating process, so as to avoid the injection needle carried disease germs from injuring human body.
The second object of the present invention is to propose a kind of injector for medical purpose, and realizing the side of core bar has putting for lateral openings Enter the utensil chamber of instrument used for injection, core bar presses hand jagged positioned at the side of utensil chamber.In injector for medical purpose by before use, note Emitter has the utensil intracavitary for being placed into core bar；In injector for medical purpose by use, being set in being pinched by the indentation, there of hand for core bar Enter the taper lip of the instrument used for injection of the utensil intracavitary of core bar, instrument used for injection is taken out at the lateral openings of utensil chamber；Medical Syringe is by after use, after the instrument used for injection being inserted on the conehead of overcoat is removed, then by instrument used for injection from the lateral of utensil chamber Opening disposes the utensil intracavitary into core bar, and then shifting core bar onto behind bottom most of core bar enters in overcoat, reaches and ultimately forms Safety-type injector for medical purpose the less purpose of overall volume, so as to be offered convenience to follow-up destroy.
The third object of the present invention is to propose a kind of injector for medical purpose, and realizing the rear portion of overcoat cavity has the locking of convex Circumferential projection, there is the locking in locking circumferential recess, overcoat cavity the periphery of core bar, and circumferential projection is resiliently flexible crosses core The circumferential projection of locking of bar enters in the locking circumferential recess of core bar.After injector for medical purpose use, aspirate and inject for single Use requirement, it is contemplated that disposable process once completion, automatic start prevent reuse function, by injector for medical purpose Overcoat and core bar lock together, then pinch the taper lip of the flat injection needle away from syringe needle, injection needle can depart from medical injection The conehead of the overcoat of emitter, then the injection needle carried disease germs is put into collecting box；For before single injection core bar can carry out it is many The use requirement of secondary suction, it is contemplated that disposable process once completion, pinch the taper lip of the flat injection needle away from syringe needle, Injection needle can depart from the conehead of the overcoat of injector for medical purpose, and both the injection needle that carried disease germs can be put into collecting box, can also The injection needle carried disease germs is taken in the utensil intracavitary of the core bar of injector for medical purpose, then optionally manually starting prevents from reusing Function, the overcoat and core bar of injector for medical purpose are locked together or do not locked together；Pin will not be touched by reaching in operating process The purpose of head, so as to both the injection needle carried disease germs can be avoided to cause serious injury human body, can avoid being reused again.
The fourth object of the present invention is to propose a kind of injector for medical purpose, and realizing the rear portion of overcoat cavity has the positioning of convex There are multiple positioning circumferential recess of positioning axial projection and the axial arranged distribution along core bar circumferential projection, the periphery of core bar.When Rotation core bar causes the positioning axial projection that the circumferential projection elastic deformation of the positioning in overcoat cavity crosses core bar to enter core bar After in chosen positioning circumferential recess, the sealing ring for the core bar being constrained in overcoat cavity and the back cover portion of overcoat cavity it Between chamber formation injector for medical purpose selected liquid capacity；Cause the circumferential projection of the positioning in overcoat cavity when rotating core bar The positioning circumferential recess that elastic deformation crosses core bar is removed after the positioning circumferential recess of core bar, and manipulate core bar can make sealing by hand Circle is moved forward and backward in overcoat cavity；Reach that the filling amount of injector for medical purpose can be with the purpose of accurate lock.
The fifth object of the present invention is to propose a kind of injector for medical purpose, realizes safety-type disposable sterilized syringe Or the part of safety self-destructing disposable sterilized syringe is than the few injection needle of conventional disposable sterilized syringe Sheath part, the phase of the structure of the topping up chamber of injector for medical purpose of the invention and conventional disposable sterilized syringe Together, injector for medical purpose of the invention, which had both reached, is easy to exclude the gas for filling chamber and is easy to the purpose of assembling, and life is reached again Produce cost and the production cost of conventional disposable sterilized syringe is similar, and than existing safety-type disposable nothing The much lower purpose of the production cost of bacterium syringe or safety self-destructing disposable sterilized syringe.
The purpose of the present invention is achieved through the following technical solutions：
The injector for medical purpose of the present invention includes overcoat and core bar.Enough transparencies are cased with outside.It is cased with overcoat cavity outside.Outside Cover the cavity end opening before and after overcoat respectively.There is back cover portion the front end of overcoat cavity.Front end in the back cover portion of overcoat cavity There is conehead.The conehead of overcoat can be outer cone joint, or outer cone locked joints, can be the conehead of middle hair style, It can also be the conehead of inclined hair style.There is cone head hole in conehead.Cone head hole and overcoat cavity insertion.There is overcoat volume at the rear portion of overcoat Side.There is volume scale on the outer surface of overcoat.The rear end of core bar has by hand, and there is sealing ring front portion.Sealing ring can be with core bar Monoblock type is made, can also be made with core bar split type.It is empty that the sealing ring of core bar inserts overcoat at overcoat cavity open rearward end After intracavitary, manipulate core bar can be such that sealing ring is moved forward and backward in overcoat cavity by hand, outer wall and the overcoat cavity of sealing ring The sealing of inwall formation injector for medical purpose coordinates.
Injection needle, fog-spray nozzle or other various syringes can be plugged on the conehead of the overcoat of the injector for medical purpose of the present invention Tool.There is circular cone inclined-plane the rear end of the conehead of overcoat.There are taper lip and bellmouth in the rear portion of instrument used for injection.The taper of instrument used for injection Lip is located at the rear portion of bellmouth.Axial groove can be distributed with the wall of the taper lip of instrument used for injection.Taper lip The bus of taper can be straight line or curve.The conehead and circular cone inclined-plane of overcoat and the taper lip of instrument used for injection and Bellmouth constitutes the interface of instrument used for injection.When the bellmouth of instrument used for injection is inserted on the conehead of overcoat, instrument used for injection is fixed On the conehead of overcoat.When pinching the taper lip of flat instrument used for injection, the cone inclined of rear end of the taper lip along the conehead of overcoat Face is moved, so that taper lip pushing syringe tool is moved forward so that the bellmouth of instrument used for injection departs from the conehead of overcoat.
The side of the core bar of the injector for medical purpose of the present invention can have the utensil chamber of lateral openings.Utensil intracavitary can insert note Penetrate the instrument used for injection of pin or fog-spray nozzle.There is intracavitary circumferential recess the rear end of utensil chamber.The intracavitary circumferential recess of utensil chamber it is lateral Circumferential width at opening is less than the diameter of the diameter of the taper lip of instrument used for injection and the intracavitary circumferential recess of utensil chamber.Core bar Hand of pressing can be with jagged in the side positioned at utensil chamber.When instrument used for injection is placed into the utensil intracavitary of core bar, instrument used for injection Taper lip elastic deformation cross at the lateral openings of intracavitary circumferential recess of utensil chamber, the intracavitary into utensil chamber is circumferentially recessed In groove so that the taper lip of instrument used for injection is constrained in the intracavitary circumferential recess of utensil chamber, and instrument used for injection is constrained in into device Has intracavitary.In injector for medical purpose by before use, instrument used for injection is placed into the utensil intracavitary of core bar.Used in injector for medical purpose When, in the taper lip of the instrument used for injection that the utensil intracavitary for being placed into core bar is pinched by the indentation, there of hand of core bar, from utensil chamber Lateral openings at take out instrument used for injection, then the bellmouth of instrument used for injection is inserted on the conehead of overcoat so that instrument used for injection quilt It is fixed on the conehead of overcoat.After injector for medical purpose is by use, after the instrument used for injection being inserted on the conehead of overcoat is removed, then The lateral openings of instrument used for injection from utensil chamber are disposed into the utensil intracavitary into core bar.
The rear portion of the overcoat cavity of the injector for medical purpose of the present invention can have the circumferential projection of the positioning of convex.Positioning is circumferential convex There is projection axial constraint inclined-plane the axial both sides of block respectively.There is a projection circumferentially constraint the circumferential both sides of the circumferential projection of positioning respectively Inclined-plane.The periphery of core bar can have positioning circumferential recess.Axial arranged distribution of multiple positioning circumferential recess along core bar.Each is determined Distinguish fluted axial constraint inclined-plane in the axial both sides of position circumferential recess.The circumferential both sides of each positioning circumferential recess have recessed respectively Groove circumferentially constrains inclined-plane.The peripheral side of positioning circumferential recess has positioning axial projection.The peripheral side of positioning axial projection has Projection circumferentially constrains inclined-plane.The circumferential projection elastic deformation of the positioning in overcoat cavity is caused to cross the positioning of core bar when rotating core bar The projection of axial projection is after circumferentially constraint inclined-plane enters in the chosen positioning circumferential recess of core bar, and this of core bar selected is determined Two grooves of position circumferential recess circumferentially constrain two projection circumferences of the inclined-plane respectively with the circumferential projection of positioning in overcoat cavity Constraint inclined-plane is mutually constrained, and hinders core bar to be rotated in overcoat cavity, two of the selected positioning circumferential recess of core bar are recessed Two projection axial constraint inclined-planes of the groove axial constraint inclined-plane respectively with the circumferential projection of positioning in overcoat cavity are mutually constrained, and are hindered Hinder the sealing ring of core bar to be moved forward and backward in overcoat cavity, the front end of the sealing ring for the core bar being constrained in overcoat cavity with it is outer Cover the selected liquid capacity of the chamber formation injector for medical purpose between the back cover portion of cavity.Cause overcoat cavity when rotating core bar The groove that the circumferential projection elastic deformation of interior positioning crosses the positioning circumferential recess of core bar circumferentially removes determining for core bar in constraint inclined-plane After the circumferential recess of position, circumferentially constraint inclined-plane hinders the circumferential projection of the positioning in overcoat cavity to the projection of the positioning axial projection of core bar Into in the positioning circumferential recess of core bar, manipulate core bar can be such that sealing ring is moved forward and backward in overcoat cavity by hand.
The rear portion of the overcoat cavity of the injector for medical purpose of the present invention can have the circumferential projection of the locking of convex.Locking is circumferential convex There is projection axial constraint inclined-plane the axial direction of block.There is a projection circumferentially constraint inclined-plane the circumferential both sides of the circumferential projection of locking respectively.Core The periphery of bar can have locking circumferential recess.Lock the axially fluted axial constraint inclined-plane of circumferential recess.Lock circumferential recess The fluted circumferential constraint inclined-plane of circumferential both sides difference.The peripheral side of locking circumferential recess has locking axial projection.Work as rotation Core bar causes the locking axial projection that the circumferential projection elastic deformation of the locking in overcoat cavity crosses core bar to enter the locking of core bar After in circumferential recess, the groove axial constraint inclined-plane of the locking circumferential recess of core bar and the circumferential projection of the locking in overcoat cavity Projection axial constraint inclined-plane is mutually constrained, and circumferentially constraint inclined-plane is empty with overcoat respectively for two grooves of the locking circumferential recess of core bar Two projections of the circumferential projection of locking of intracavitary are circumferentially mutually constrained on constraint inclined-plane so that core bar is locked on overcoat cavity.
The rear portion of the overcoat cavity of the injector for medical purpose of the present invention can have the circumferential projection of the locking of convex.Locking is circumferential convex There is projection axial constraint inclined-plane the axial direction of block.There is a projection circumferentially constraint inclined-plane the circumferential both sides of the circumferential projection of locking respectively.Core The periphery of bar can have locking circumferential recess.Lock the axially fluted axial constraint inclined-plane of circumferential recess.Lock circumferential recess The fluted circumferential constraint inclined-plane of circumferential both sides difference.The axial sides of locking circumferential recess have the circumferential projection of locking.Work as promotion Core bar causes the circumferential projection of locking that the circumferential projection elastic deformation of the locking in overcoat cavity crosses core bar to enter the locking of core bar After in circumferential recess, the groove axial constraint inclined-plane of the locking circumferential recess of core bar and the circumferential projection of the locking in overcoat cavity Projection axial constraint inclined-plane is mutually constrained, and circumferentially constraint inclined-plane is empty with overcoat respectively for two grooves of the locking circumferential recess of core bar Two projections of the circumferential projection of locking of intracavitary are circumferentially mutually constrained on constraint inclined-plane so that core bar is locked on overcoat cavity.
The overcoat of the injector for medical purpose of the present invention can include liquid filling bottle and outer cover.Liquid filling bottle has the first overcoat cavity.The One overcoat cavity is respectively in front and rear end opening.There is back cover portion the front portion of first overcoat cavity.In the back cover portion of the first overcoat cavity Front end have conehead.There is cone head hole in conehead.Cone head hole and the first overcoat cavity insertion.It is covered with the second overcoat cavity.Second The overcoat cavity end opening before and after outer cover respectively.There is the circumferential projection of the buckle of convex, convex at the rear portion of second overcoat cavity With the overcoat crimping stretched out.When the second overcoat cavity of outer cover is wrapped in the periphery of liquid filling bottle, the second overcoat of outer cover Liquid filling bottle is locked in the second overcoat cavity of outer cover, the cone of liquid filling bottle by the snap hook of cavity on the back edge of liquid filling bottle Head stretches out at the front opening of outer cover.When the sealing ring of core bar inserts the first overcoat sky at the second overcoat cavity open rearward end After intracavitary, manipulate core bar can be such that sealing ring is moved forward and backward in the first overcoat cavity by hand, outside the outer wall of sealing ring and first The sealing for covering the inwall formation injector for medical purpose of cavity coordinates.
The injection of injection needle or fog-spray nozzle can be plugged on the conehead of the front end in the back cover portion of the first overcoat cavity of liquid filling bottle Utensil.There can be the circular cone inclined-plane of high inclination-angle at the front opening of outer cover.When the bellmouth of instrument used for injection is inserted in the cone of liquid filling bottle When on head, instrument used for injection is fixed on the conehead of liquid filling bottle.When pinching the taper lip of flat instrument used for injection, taper lip is outside Circular cone inclined-plane movement at the front opening of cover, taper lip pushing syringe tool is moved forward so that the taper of instrument used for injection Hole departs from the conehead of liquid filling bottle.
Brief description of the drawings
Fig. 1 is the front view for representing the safety self-destructing injector for medical purpose of first embodiment of the invention before use；
Fig. 2 is to represent Fig. 1 injector for medical purpose in front view to be removed or when having inserted injection needle；
Fig. 3 is the rearview for representing Fig. 2；
Fig. 4 is the front view for representing Fig. 1 injector for medical purpose when to be used；
Fig. 5 be represent Fig. 1 injector for medical purpose be in self-locking state when rearview；
Fig. 6 is the 6-6 sectional views for representing Fig. 5；
Fig. 7 is the 7-7 sectional views for representing Fig. 5；
Fig. 8 is the outside drawing of the core bar for the injector for medical purpose for representing Fig. 1；
Fig. 9 is the outside drawing at the back side for representing Fig. 8；
Figure 10 is the outside drawing of the overcoat for the injector for medical purpose for representing Fig. 1；
Figure 11 is the outside drawing of the injection needle for the injector for medical purpose for representing Fig. 1；
Figure 12 is to represent the front view that Figure 11 injection needle is inserted in Fig. 8 core bar；
Figure 13 is the rearview for representing another core bar；
Figure 14 is to represent to configure front view of the injector for medical purpose of the first embodiment of fog-spray nozzle before use；
Figure 15 is the front view for representing Figure 14 injector for medical purpose when having installed fog-spray nozzle；
Figure 16 is the outside drawing for the fog-spray nozzle for representing Figure 15；
Figure 17 is to represent the front view that Figure 16 fog-spray nozzle is inserted in Fig. 8 core bar；
Figure 18 is that the safety self-destructing injector for medical purpose for representing second embodiment of the invention is having been injected into the outer of decoction state See figure；
Figure 19 is the outside drawing for representing Figure 18 injector for medical purpose when to be used；
Figure 20 is the top view for the injector for medical purpose for representing Figure 18；
Figure 21 is the 21-21 sectional views for representing Figure 20；
Figure 22 is the 22-22 sectional views for representing Figure 20；
Figure 23 is to represent the front view of Figure 18 injector for medical purpose after use；
Figure 24 is the front view inserted in core bar of injection needle for the injector for medical purpose for representing Figure 18；
Figure 25 be represent Figure 18 injector for medical purpose be in self-locking state when outside drawing；
Figure 26 is the outside drawing at the back side for representing Figure 25；
Figure 27 is the outside drawing of the end part seal cap for the injector for medical purpose for representing Figure 18；
Figure 28 is the outside drawing of the core bar for the injector for medical purpose for representing Figure 18；
Figure 29 is the outside drawing at the back side for representing Figure 28；
Figure 30 is the outside drawing of the overcoat for the injector for medical purpose for representing Figure 18；
Figure 31 is the outside drawing at the back side for representing Figure 30；
Figure 32 is that the injector for medical purpose for representing second embodiment installs the front view of the injector for medical purpose of fog-spray nozzle；
Figure 33 is the outside drawing for representing the safety-type injector for medical purpose of third embodiment of the invention before use；
Figure 34 is the outside drawing for representing Figure 33 injector for medical purpose when to be used；
Figure 35 is the front view inserted in core bar of injection needle for the injector for medical purpose for representing Figure 33；
Figure 36 is the front view of the overcoat for the injector for medical purpose for representing Figure 33；
Figure 37 is the left view for the overcoat for representing Figure 36；
Figure 38 is the outside drawing for representing the safety-type injector for medical purpose of fourth embodiment of the invention before use；
Figure 39 is the outside drawing for representing Figure 38 injector for medical purpose when to be used；
Figure 40 is the front view of the outer cover for the injector for medical purpose for representing Figure 38；
Figure 41 is the outside drawing for the outer cover for representing Figure 40；
Figure 42 is the front view of the liquid filling bottle for the injector for medical purpose for representing Figure 38；
Figure 43 is the outside drawing for the liquid filling bottle for representing Figure 42；
Figure 44 is the outside drawing of the overcoat for the injector for medical purpose for representing Figure 38；
Figure 45 is the outside drawing of the core bar for the injector for medical purpose for representing Figure 38；
Figure 46 is the outside drawing inserted in core bar of injection needle for the injector for medical purpose for representing Figure 38.
Embodiment
Way of example is used below, and the most preferred embodiment of the injector for medical purpose of the present invention is stated with reference to accompanying drawing.The model of the present invention Enclose and will be indicated in the claims.It should be appreciated that some or all accompanying drawing is provided to illustrate highly preferred embodiment of the present invention Illustrate sketch, and do not depict the full-size(d) of shown part.With reference to the detailed narration of most preferred embodiment, it will clearer Ground, which understands, reaches above-mentioned and other objects and advantages the practical ways of the present invention.
In the the accompanying drawings and the following description, term " near " and " rear " refer to close to the position of injector operations person, and term " remote " and " preceding " refers to the position away from injector operations person.Term " axial direction " is with the long axis direction of the overcoat of injector for medical purpose On the basis of, term " circumference " is on the basis of the contour direction of the radial section of the overcoat of injector for medical purpose.Other positions and side To term can understand with reference to the accompanying drawings with following description.
Fig. 1 to Figure 12 is the safety self-destructing injector for medical purpose 1 for representing first embodiment of the invention.Injector for medical purpose 1 is wrapped Include overcoat 2 and core bar 3.Overcoat 2 (see Fig. 1, Fig. 5, Fig. 6 and Figure 10) has overcoat cavity 4.Overcoat cavity 4 is opened in the rear end of overcoat 2 Mouth 5.There is back cover portion 6 front end of overcoat cavity 4.The conehead 7 of hair style in having in the front end in the back cover portion 6 of overcoat cavity 4.Conehead 7 Inside there is cone head hole 8.Cone head hole 8 is formed through the front opening of overcoat 2 with overcoat cavity 4.There is overcoat crimping at the rear portion of overcoat 2 9.There is volume scale 10 on the outer surface of overcoat 2.The rear end of core bar 3 (see Fig. 8, Fig. 9 and Figure 12) has by hand 11, and front portion has close Seal 12.After the sealing ring 12 of core bar 3 is inserted at the open rearward end 5 of overcoat cavity 4 in overcoat cavity 4, manipulate core bar 2 presses hand 11 can be such that sealing ring 12 is moved forward and backward in overcoat cavity 4, and the outer wall 13 of sealing ring 12 is cured with the formation of inwall 14 of overcoat cavity 4 Coordinated with the sealing of syringe 1.
Injection needle 15 can be plugged on the conehead 7 of overcoat 2 (see Fig. 4).There is the circle of greater obliquity the rear end of the conehead 7 of overcoat 2 Bore inclined-plane 16 (see Fig. 1 to Fig. 3).There are taper lip 17 and bellmouth 18 in the rear portion of injection needle 15 (see Figure 11).Injection needle 15 Taper lip 17 is located at the rear portion of bellmouth 18.Axial groove 19 is distributed with the wall of the taper lip 17 of injection needle 15.Note The groove 19 penetrated in the taper lip 17 of pin 15 can both increase the friction of taper lip 17, can be easy to pinch flat taper lip again 17.The taper lip 17 and bellmouth 18 of the conehead 7 and circular cone inclined-plane 16 of overcoat 2 and injection needle 15 constitute connecing for injection needle 15 Mouthful.When the bellmouth 18 of injection needle 15 is inserted on the conehead 7 of overcoat 2, injection needle 15 be fixed on the conehead 7 of overcoat 2 (see Fig. 4).When pinching the taper lip 17 of flat injection needle 15, the circular cone inclined-plane 16 of rear end of the taper lip 17 along conehead 7 is moved, from And taper lip 17 promotes injection needle 15 to move forward so that the bellmouth 18 of injection needle 15 departs from the conehead 7 of overcoat 2.
There is the utensil chamber 20 of lateral openings the side of core bar 3.Injection needle 15 can be inserted in utensil chamber 20 (see Figure 12).Utensil There is intracavitary circumferential recess 21 rear end of chamber 20 (see Fig. 8).Circumference at the lateral openings of the intracavitary circumferential recess 21 of utensil chamber 20 Width is less than the diameter of the diameter of the taper lip 17 of injection needle 15 and the intracavitary circumferential recess 21 of utensil chamber 20.Core bar 3 is pressed Hand 11 is positioned at the side of injection needle 15 jagged 22 (see Fig. 8).When injection needle 15 is placed into the utensil chamber 20 of core bar 3, The elastic deformation of taper lip 17 of injection needle 15 is crossed at the lateral openings of intracavitary circumferential recess 21 of utensil chamber 20, into utensil In the intracavitary circumferential recess 21 of chamber 20 so that the taper lip 17 of injection needle 15 is constrained on the intracavitary circumferential recess of utensil chamber 20 In 21, injection needle 15 is constrained in utensil chamber 20 (see Figure 12).In injector for medical purpose 1 by before use, injection needle 15 is placed into (see Fig. 1) in the utensil chamber 20 of core bar 3.In injector for medical purpose 1 by use, being pinched at the breach 22 by hand 11 of core bar 3 The taper lip 17 (see Fig. 2) for the injection needle 15 being placed into the utensil chamber 20 of core bar 3, takes at the lateral openings of utensil chamber 20 Go out injection needle 15, then the bellmouth 18 of injection needle 15 is inserted on the conehead 7 of overcoat 2 so that injection needle 15 is fixed on overcoat 2 Conehead 7 on (see Fig. 4).After injector for medical purpose 1 is by use, after the injection needle 15 being inserted on the conehead 7 of overcoat 2 is removed, The lateral openings of injection needle 15 from utensil chamber 20 are disposed in the utensil chamber 20 of core bar 3 (see Fig. 2) again.
There is the circumferential projection 23 of the locking of convex at the rear portion of overcoat cavity 4 (see Figure 10).Locking in overcoat cavity 4 is circumferentially convex There is a high inclination-angle projection axial constraint inclined-plane 24 axial direction of block 23, and the circumferential both sides of the circumferential projection 23 of locking have high inclination-angle convex respectively Block circumferentially constrains inclined-plane 25 and 26.There is locking circumferential recess 27 periphery of core bar 3 (see Fig. 3 and Fig. 9).Lock circumferential recess 27 Axially there is high inclination-angle groove axial constraint inclined-plane 28.The circumferential both sides of locking circumferential recess 27 have high inclination-angle groove circumferential about respectively Beam inclined-plane 29 and 30.The peripheral side of locking circumferential recess 27 has locking axial projection 31.Lock the side point of axial projection 31 Not having small inclination projection, circumferentially constraint inclined-plane 32 and high inclination-angle circumferentially constrain inclined-plane 33.In injector for medical purpose 1 by before use, core bar Circumferentially constraint inclined-plane 33 prevents the circumferential projection 23 in overcoat cavity 4 from deviateing lock to the high inclination-angle projection of 3 locking axial projection 31 Tight axial projection 31 (see Fig. 3).After injector for medical purpose 1 is by use, the injection needle 15 being inserted on the conehead 7 of overcoat 2 is removed Afterwards, injection needle 15 is inserted in the utensil chamber 20 of core bar 7, now, rotates core bar 3 and make it that the locking in overcoat cavity 4 is circumferentially convex The small inclination projection that the elastic deformation of block 23 crosses the locking axial projection 31 of core bar 3 circumferentially constrains inclined-plane 32, into the lock of core bar 3 After in tight circumferential recess 27, in the high inclination-angle groove axial constraint inclined-plane 28 and overcoat cavity 4 of the locking circumferential recess 27 of core bar 3 The high inclination-angle projection axial constraint inclined-plane 24 of the circumferential projection 23 of locking mutually constrain, the two of the locking circumferential recess 27 of core bar 3 Circumferentially two high inclination-angles of the constraint inclined-plane 29 and 30 respectively with the circumferential projection 23 of locking in overcoat cavity 4 are convex for individual high inclination-angle groove Block is circumferentially mutually constrained on constraint inclined-plane 25 and 26；Meanwhile, lock what is sent during circumferential 23 elastic deformation of projection in overcoat cavity 4 Auditory tone cues, core bar 3 and the injection needle 15 being placed into the utensil chamber 20 of core bar 3 have been locked in overcoat 4 (see Fig. 5 to Fig. 7).
Core bar 3 in injector for medical purpose 1 can also be replaced with core bar 34 (see Figure 13).The periphery of core bar 34 has locking circumferential Groove 35 (see Figure 13).There is high inclination-angle groove axial constraint inclined-plane 36 axial direction of locking circumferential recess 35.Lock circumferential recess 35 Circumferential both sides have high inclination-angle groove circumferentially constraint inclined-plane 37 and 38.The axial sides of locking circumferential recess 35 have locking circumferential convex Block 39.There is small inclination projection axial constraint inclined-plane 40 side of the circumferential projection 39 of locking.Cause overcoat cavity 4 when promoting core bar 34 The circumferential elastic deformation of projection 23 of interior locking crosses the small inclination projection axial constraint inclined-plane of the circumferential projection 39 of locking of core bar 34 After 40 enter in the locking circumferential recess 35 of core bar 34, the high inclination-angle groove axial constraint of the locking circumferential recess 35 of core bar 34 is oblique Face 36 and the high inclination-angle projection axial constraint inclined-plane 24 of the circumferential projection 23 of locking in overcoat cavity 4 are mutually constrained, core bar 34 Locking two high inclination-angle grooves of circumferential recess 35, circumferentially constraint inclined-plane 37 and 38 is circumferentially convex with locking in overcoat cavity 4 respectively Two high inclination-angle projections of block 23 are circumferentially mutually constrained on constraint inclined-plane 25 and 26；Meanwhile, the circumferential projection of locking in overcoat cavity 4 The auditory tone cues sent during 23 elastic deformation, core bar 34 has been locked in overcoat cavity 4.
Injection needle 15 in injector for medical purpose 1 can also be replaced with fog-spray nozzle 41.There is taper lip at the rear portion of fog-spray nozzle 41 42 and bellmouth 43 (see Figure 16).The taper lip 42 of fog-spray nozzle 41 is located at the rear portion of bellmouth 43.The taper lip of fog-spray nozzle 41 Axial groove 44 is distributed with the wall on side 42.In injector for medical purpose 1 by before use, fog-spray nozzle 41 is placed into the utensil of core bar 3 (see Figure 14) in chamber 20.When fog-spray nozzle 41 being installed on injector for medical purpose 1, the spray that will can be placed into the utensil chamber 20 of core bar 3 After mist first 41 takes out, the bellmouth 43 of fog-spray nozzle 41 is inserted on the conehead 7 of overcoat 2 so that fog-spray nozzle 41 is fixed on overcoat 2 Conehead 7 on (see Figure 15).After injector for medical purpose 1 is by use, after the fog-spray nozzle 41 being inserted on conehead 7 is removed, fog-spray nozzle 41 are placed into the utensil chamber 20 of core bar 3 (see Figure 17) again.
Figure 18 to Figure 31 is the safety self-destructing injector for medical purpose 50 for the pre-filled medicinal liquid for representing second embodiment of the invention.Doctor Include overcoat 51 and core bar 52 with syringe 50.Overcoat 51 (see Figure 21, Figure 25, Figure 30 and Figure 31) has overcoat cavity 53.Overcoat Open rearward end 54 of the cavity 53 in overcoat 51.There is back cover portion 55 front end of overcoat cavity 53.In the back cover portion 55 of overcoat cavity 53 Front end have the conehead 56 of middle hair style.There is cone head hole 57 in conehead 56.Cone head hole 57 and the insertion of overcoat cavity 53.In overcoat 51 There is overcoat crimping 58 at rear portion.There is volume scale 59 on the outer surface of overcoat 51.The rear end of core bar 52 (see Figure 28 and Figure 29) has Hand 60 is pressed, there is sealing ring 61 front portion.The sealing ring 61 of core bar 52 inserts overcoat cavity 53 at the open rearward end 54 of overcoat cavity 53 After interior (see Figure 21), manipulate core bar 51 can be such that sealing ring 61 is moved forward and backward in overcoat cavity 53 by hand 60, sealing ring 61 The sealing of outer wall 62 and the formation injector for medical purpose 50 of inwall 63 of overcoat cavity 53 coordinates.
There is the circular cone inclined-plane 64 of greater obliquity the rear end of the conehead 56 of overcoat 51 (see Figure 21 and Figure 24 to Figure 26).Conehead cap There are taper lip 66 and bellmouth 67 in 65 rear portion (see Figure 21 and Figure 27).The taper lip 66 of conehead cap 65 is located at bellmouth 67 Rear portion.When the bellmouth 67 of conehead cap 65 is inserted on the conehead 56 of overcoat 51, conehead cap 65 is fixed on the cone of overcoat 51 (see Figure 20 and Figure 21) on first 56.When pinching the taper lip 66 of flat conehead cap 65, rear end of the taper lip 66 along conehead 56 Circular cone inclined-plane 64 is moved, and taper lip 66 promotes conehead cap 65 to move forward so that the bellmouth 67 of conehead cap 65 departs from overcoat 51 conehead 56.
There is the utensil chamber 68 of lateral openings the side of core bar 52 (see Figure 19 and Figure 28).Injection needle can be inserted in utensil chamber 68 15.There is intracavitary circumferential recess 69 rear end of utensil chamber 68.Circumference at the lateral openings of the intracavitary circumferential recess 69 of utensil chamber 68 Width is less than the diameter of the diameter of the taper lip 17 of injection needle 15 and the intracavitary circumferential recess 69 of utensil chamber 68.Core bar 52 is pressed Hand 60 is positioned at the side of injection needle 15 jagged 70.When injection needle 15 is placed into the utensil chamber 68 of core bar (see Figure 24), The elastic deformation of taper lip 17 of injection needle 15 is crossed at the lateral openings of intracavitary circumferential recess 69 of utensil chamber 68, into utensil In the intracavitary circumferential recess 69 of chamber 68 so that the taper lip 17 of injection needle 15 is constrained on the intracavitary circumferential recess of utensil chamber 68 In 69, injection needle 15 is constrained in utensil chamber 68.(see Figure 18) before injector for medical purpose 50 is by use, injection needle 15 is placed into In the utensil chamber 68 of core bar 52.When injector for medical purpose 50 is used (see Figure 19), in pressing at the breach 70 of hand 60 for core bar 52 The taper lip 17 for the injection needle 15 being placed into the utensil chamber 68 of core bar 52 is pinched, is taken out at the lateral openings of utensil chamber 68 Injection needle 15, then the bellmouth 20 of injection needle 15 is inserted on the conehead 56 of overcoat 51 so that injection needle 15 is fixed on overcoat On 51 conehead 56.(see Figure 24) after injector for medical purpose 50 is by use, by the injection needle 15 being inserted on the conehead 56 of overcoat 51 After removing, then the lateral openings of injection needle 15 from utensil chamber 68 are disposed in the utensil chamber 68 of core bar 52.
There is the circumferential projection 71 of the locking of convex at the rear portion of overcoat cavity 53 (see Figure 30).The axial direction of the circumferential projection 71 of locking has High inclination-angle projection axial constraint inclined-plane 72.Circumferentially constraint is oblique for the high inclination-angle projection that has respectively of the circumferential both sides of the circumferential projection 71 of locking Face 73 and 74.There is locking circumferential recess 75 periphery of core bar 52 (see Figure 29).The axial direction of locking circumferential recess 75 has high inclination-angle recessed Groove axial constraint inclined-plane 76.There is high inclination-angle groove circumferentially constraint inclined-plane 77 and 78 the circumferential both sides of locking circumferential recess 75 respectively. The peripheral side of locking circumferential recess 75 has locking axial projection 79.The side of locking axial projection 79 has small inclination projection circumferential Constrain inclined-plane 80.After injector for medical purpose 50 is by use, after the injection needle 15 being inserted on the conehead 56 of overcoat 51 is removed, then will Injection needle 15 inserts in the utensil chamber 68 of core bar 52 (see Figure 24), now, and rotation core bar 52 causes the locking in overcoat cavity 53 The small inclination projection that the circumferential elastic deformation of projection 71 crosses the locking axial projection 79 of core bar 52 circumferentially enters core in constraint inclined-plane 80 After in the locking circumferential recess 75 of bar 52, the high inclination-angle groove axial constraint inclined-plane 76 of the locking circumferential recess 75 of core bar 52 with outside The high inclination-angle projection axial constraint inclined-plane 72 for covering the circumferential projection 71 of the locking in cavity 53 is mutually constrained, and the locking of core bar 52 is circumferential Two high inclination-angle grooves of groove 75 circumferentially constraint inclined-plane 77 and 78 respectively with the circumferential projection 71 of locking in overcoat cavity 53 Two high inclination-angle projections are circumferentially mutually constrained on constraint inclined-plane 73 and 74；Meanwhile, the circumferential bullet of projection 71 of locking in overcoat cavity 53 Property deformation when the auditory tone cues that sends, core bar 52 and the injection needle 15 being placed into the utensil chamber 68 of core bar 52 have been locked in overcoat (see Figure 25 and Figure 26) in 51.
There is the circumferential projection 81 of the positioning of convex at the rear portion of overcoat cavity 53 (see Figure 31).The axial direction two of the circumferential projection 81 of positioning There is projection axial constraint inclined-plane 82 and 83 side respectively.There is projection circumferentially constraint inclined-plane the circumferential both sides of the circumferential projection 81 of positioning respectively 84 and 85.There is positioning circumferential recess 86 periphery of core bar 52 (see Figure 28).Axial direction of multiple positioning circumferential recess 86 along core bar 52 Arranged distribution.Distinguish fluted axial constraint inclined-plane 87 and 88 in the axial both sides of each positioning circumferential recess 86.Each positioning week To the fluted circumferential constraint inclined-plane 89 and 90 of the circumferential both sides difference of groove 86.The peripheral side of positioning circumferential recess 86 has positioning Axial projection 91.The peripheral side of positioning axial projection 91 has projection circumferentially constraint inclined-plane 92.Cause overcoat when rotating core bar 52 The projection for the positioning axial projection 91 that the circumferential elastic deformation of projection 81 of positioning in cavity 53 crosses core bar 52 circumferentially constrains inclined-plane 92 enter rear (see Figure 18 and Figure 20 to Figure 22) in the chosen positioning circumferential recess 93 of core bar 52, and this of core bar 52 is selected Position two grooves of circumferential recess 93 circumferentially constraint inclined-plane 96 and 97 respectively with the circumferential projection 81 of positioning in overcoat cavity 53 Two projections circumferentially mutually constrain on constraint inclined-plane 84 and 85, hinder core bar 52 to rotate in the overcoat cavity 53, core bar 52 should Two groove axial constraint inclined-planes 94 and 95 of selected positioning circumferential recess 93 are circumferential with positioning in overcoat cavity 53 respectively Two projection axial constraint inclined-planes 82 and 83 of projection 81 are mutually constrained, and hinder the sealing ring 61 of core bar 52 in overcoat cavity 53 It is movable, the front end of the sealing ring 61 for the core bar 52 being constrained in overcoat cavity 53 and the back cover portion 55 of overcoat cavity 53 it Between chamber formation injector for medical purpose 50 selected liquid capacity.Make it that the positioning in overcoat cavity 53 is all when rotating core bar 52 The groove that the positioning circumferential recess 93 of core bar 52 is crossed to the elastic deformation of projection 81 circumferentially removes determining for core bar 52 in constraint inclined-plane 96 After the circumferential recess 93 of position (Figure 19, Figure 23 and Figure 24), the projection of the positioning axial projection 91 of core bar 52 circumferentially hinders on constraint inclined-plane 92 The circumferential projection 81 of the positioning in overcoat cavity 53 is hindered to enter in the positioning circumferential recess 86 of core bar 52, manipulate core bar 52 presses hand 60 Sealing ring 61 can be made to be moved forward and backward in overcoat cavity 53.In operation, in overcoat cavity 53 the circumferential projection 81 of positioning The working condition of the auditory tone cues injector for medical purpose 50 sent during elastic deformation has been changed.
Injection needle 15 in injector for medical purpose 50 can also be replaced with fog-spray nozzle 41 (see Figure 32).
Figure 33 to Figure 37 is the safety-type injector for medical purpose 100 for representing third embodiment of the invention.Injector for medical purpose 100 is wrapped Include overcoat 101 and core bar 102.Overcoat 101 (see Figure 36 and Figure 37) has overcoat cavity 103.Overcoat cavity 103 is in overcoat 101 Open rearward end 104.There is back cover portion 105 front end of overcoat cavity 103.There is inclined head in the front end in the back cover portion 105 of overcoat cavity 103 The conehead 106 of formula.There is cone head hole 107 in conehead 106.Cone head hole 107 is formed through the front end of overcoat 101 with overcoat cavity 103 Opening.There is overcoat crimping 108 at the rear portion of overcoat 101.There is volume scale 109 on the outer surface of overcoat 101.Core bar 102 (see Figure 33 to Figure 35) rear end have by hand 110, there is sealing ring 111 front portion.The sealing ring 111 of core bar 102 is after overcoat cavity 103 After being inserted at end opening 104 in overcoat cavity 103, manipulate core bar 101 can make sealing ring 111 in overcoat cavity 103 by hand 110 Interior movable, the sealing of the outer wall 112 of sealing ring 111 and the formation injector for medical purpose 100 of inwall 113 of overcoat cavity 103 is matched somebody with somebody Close.
Injection needle 15 can be plugged on the conehead 106 of overcoat 101 (see Figure 34).The rear end of the conehead 106 of overcoat 101 has larger The circular cone inclined-plane 114 (see Figure 36) at inclination angle.The conehead 106 and circular cone inclined-plane 114 of overcoat 101 and the taper lip 17 of injection needle 15 The interface of injection needle 15 is constituted with bellmouth 18.When the bellmouth 18 of injection needle 15 is inserted on the conehead 106 of overcoat 101, note Pin 15 is penetrated to be fixed on the conehead 106 of overcoat 101.When pinching the taper lip 17 of flat injection needle 15, taper lip 17 is along cone The circular cone inclined-plane 114 of first 106 rear end is moved, so that taper lip 17 promotes injection needle 15 to move forward so that injection needle 15 Bellmouth 18 depart from overcoat 101 conehead 106.
There is the utensil chamber 115 of lateral openings the side of core bar 102.Injection needle 15 can be inserted in utensil chamber 115 (see Figure 35). There is intracavitary circumferential recess 116 rear end of utensil chamber 115 (see Figure 34).The lateral openings of the intracavitary circumferential recess 116 of utensil chamber 115 The circumferential width at place is less than the diameter of the diameter of the taper lip 17 of injection needle 15 and the intracavitary circumferential recess 116 of utensil chamber 115. Core bar 102 presses hand 110 positioned at the side of injection needle 15 jagged 117.When injection needle 15 is placed into the utensil chamber of core bar 102 When in 115, the elastic deformation of taper lip 17 of injection needle 15 crosses the lateral openings of the intracavitary circumferential recess 116 of utensil chamber 115 Place, into the intracavitary circumferential recess 116 of utensil chamber 115 so that the taper lip 17 of injection needle 15 is constrained on utensil chamber 115 Intracavitary circumferential recess 116 in, injection needle 15 is constrained in utensil chamber 115 (see Figure 35).Used in injector for medical purpose 100 Before, injection needle 15 is placed into the utensil chamber 115 of core bar 102 (see Figure 33).In injector for medical purpose 100 by use, in core bar The taper lip 17 for the injection needle 15 being placed into the utensil chamber 115 of core bar 102 is pinched at 102 breach 117 by hand 110, Injection needle 15 is taken out at the lateral openings of utensil chamber 115, then the bellmouth 18 of injection needle 15 is inserted in the conehead of overcoat 101 On 106 so that injection needle 15 is fixed on the conehead 106 of overcoat 101 (see Figure 34).After injector for medical purpose 100 is by use, After the injection needle 15 being inserted on the conehead 106 of overcoat 101 is removed, then by injection needle 15 at the lateral openings of utensil chamber 115 Insert in the utensil chamber 115 of core bar 102.
Figure 38 to Figure 46 is the safety-type injector for medical purpose 120 for representing fourth embodiment of the invention.Injector for medical purpose 120 is wrapped Include overcoat 121 and core bar 122.Overcoat 121 includes liquid filling bottle 123 and outer cover 124 (see Figure 44).Liquid filling bottle 123 and outer cover 124 have Enough transparencies.Liquid filling bottle 123 has the first overcoat cavity 125 (see Figure 42 and Figure 43).First overcoat cavity 125 is respectively preceding Open rearward end.There is back cover portion 126 front portion of first overcoat cavity 125.Front end in the back cover portion 126 of the first overcoat cavity 125 There is conehead 127.There is cone head hole 128 in conehead 127.The insertion of 128 and first overcoat cavity of cone head hole 125.Outer cover 124 has outside second Cover cavity 129 (see Figure 40 and Figure 41).Second overcoat cavity 129 end opening before and after outer cover 124 respectively.Second overcoat cavity There are the buckle 130 of convex, the circumferential projection 131 of convex and the overcoat crimping 132 stretched out in 129 rear portion.When outer cover 124 When second overcoat cavity 129 is wrapped in the periphery of liquid filling bottle 123, the buckle 130 in the second overcoat cavity 129 is hooked in liquid filling bottle On 123 back edge, liquid filling bottle 123 is locked in the second overcoat cavity 129 of outer cover 124, the conehead 127 of liquid filling bottle 123 Stretched out at the front opening of outer cover 124 (see Figure 44).When the sealing ring 133 of core bar 122 is opened from the rear end of the second overcoat cavity 129 After the first overcoat cavity of insertion 125 is interior at mouthful, manipulate core bar 122 can make sealing ring 133 in the first overcoat cavity by hand 134 Moved forward and backward in 125, the formation injector for medical purpose 120 of inwall 136 of the overcoat cavity 125 of outer wall 135 and first of sealing ring 133 Sealing coordinates.
Injection needle 15 can be plugged on the conehead 127 of the front end in the back cover portion of the first overcoat cavity of liquid filling bottle 123.Outer cover There can be the circular cone inclined-plane 137 of high inclination-angle at 124 front opening (see Figure 40).When the bellmouth 20 of injection needle 15 is inserted in topping up When on the conehead 127 of bottle 123, injection needle 15 is fixed on the conehead 127 of liquid filling bottle 123.When the taper for pinching flat injection needle 15 During lip 17, the circular cone inclined-plane 137 at front opening of the taper lip 17 along outer cover 124 is moved, and taper lip 17 promotes injection Pin 15 is moved forward so that the bellmouth 20 of injection needle 15 departs from the conehead 127 of liquid filling bottle 123.
There is the utensil chamber 138 of lateral openings the side of core bar 122 (see Figure 45).Injection needle 15 can be inserted in utensil chamber 138 (see Figure 46).There is intracavitary circumferential recess 139 rear end of utensil chamber 138 (see Figure 45).The intracavitary circumferential recess 139 of utensil chamber 138 Lateral openings at circumferential width be less than injection needle 15 taper lip 17 diameter and the intracavitary circumferential recess of utensil chamber 138 139 diameter.Core bar 122 presses hand 134 positioned at the side of injection needle 15 jagged 140.When injection needle 15 is placed into core bar When in 122 utensil chamber 138, the elastic deformation of taper lip 17 of injection needle 15 crosses the intracavitary circumferential recess 139 of utensil chamber 138 Lateral openings at, into the intracavitary circumferential recess 139 of utensil chamber 138 so that the taper lip 17 of injection needle 15 is restrained In the intracavitary circumferential recess 139 of utensil chamber 138, injection needle 15 is constrained in utensil chamber 138 (see Figure 46).In medical injection Device 120 is by before use, injection needle 15 is placed into the utensil chamber 138 of core bar 122 (see Figure 38).Made in injector for medical purpose 120 Used time, the injection needle 15 that is placed into the utensil chamber 138 of core bar 122 is pinched at the breach 140 by hand 134 of core bar 122 Taper lip 17, takes out injection needle 15, then the bellmouth 18 of injection needle 15 is inserted in into overcoat at the lateral openings of utensil chamber 138 On 121 conehead 127 so that injection needle 15 is fixed on the conehead 127 of overcoat 121 (see Figure 39).In injector for medical purpose 120 After use, after the injection needle 15 being inserted on the conehead 127 of overcoat 121 is removed, then by injection needle 15 from the side of utensil chamber 138 In the utensil chamber 138 for disposing core bar 122 to opening.
Understand that injector for medical purpose of the invention can reach following technique effect according to above-mentioned be discussed in detail：
The injector for medical purpose of the present invention, realizes the conehead and circular cone inclined-plane and injection needle or the syringe of fog-spray nozzle by overcoat The taper lip and bellmouth of tool constitute the interface of instrument used for injection.When the bellmouth of injection needle is inserted on the conehead of overcoat, note Penetrate pin to be fixed on the conehead of overcoat, the muscle that is needled into human body will be injected or avoid the needle point of injection needle when intravascular by reaching The purpose swung, so as to avoid causing operational error；After injector for medical purpose use, it is only necessary to pinch flat remote injection needle The taper lip of injection needle, injection needle can depart from the conehead of the overcoat of injector for medical purpose, can both put the injection needle carried disease germs Enter in collecting box, the injection needle carried disease germs can also be taken in the utensil intracavitary of the core bar of injector for medical purpose, reached in operating process The purpose of syringe needle is avoided contact to, so as to avoid the injection needle carried disease germs from injuring human body.
The injector for medical purpose of the present invention, realizing the side of core bar has the utensil chamber for inserting instrument used for injection of lateral openings, Core bar presses hand jagged positioned at the side of utensil chamber.In injector for medical purpose by before use, instrument used for injection is placed into core bar Utensil intracavitary；In injector for medical purpose by use, being placed into the utensil intracavitary of core bar in pinching by the indentation, there of hand for core bar The taper lip of instrument used for injection, takes out instrument used for injection at the lateral openings of utensil chamber；After injector for medical purpose is by use, it will insert After instrument used for injection on the conehead of overcoat is removed, then the lateral openings of instrument used for injection from utensil chamber are disposed into the utensil into core bar Intracavitary, then shifts behind bottom core bar onto most of core bar and enters in overcoat, reaches the safety-type injector for medical purpose that ultimately forms The less purpose of overall volume, so as to be offered convenience to follow-up destroy.
The injector for medical purpose of the present invention, realizing the rear portion of overcoat cavity has the circumferential projection of the locking of convex, the periphery of core bar There is the circumferential projection of the resiliently flexible locking for crossing core bar of the circumferential projection of the locking in locking circumferential recess, overcoat cavity to enter In the locking circumferential recess of core bar, the auditory tone cues sent during the circumferential projection elastic deformation of locking in overcoat cavity, core bar and The injection needle for being placed into the utensil intracavitary of core bar has been locked in overcoat.After injector for medical purpose use, aspirate and note for single The use requirement penetrated, it is contemplated that disposable process once completion, automatic start prevent reuse function, by medical injection The overcoat and core bar of device are locked together, and then pinch the taper lip of the flat injection needle away from syringe needle, injection needle can depart from medical The conehead of the overcoat of syringe, then the injection needle carried disease germs is put into collecting box；For before single injection core bar can carry out The use requirement repeatedly aspirated, it is contemplated that disposable process once completion, pinch the taper lip of the flat injection needle away from syringe needle Side, injection needle can depart from the conehead of the overcoat of injector for medical purpose, can both the injection needle carried disease germs be put into collecting box, and also might be used With the utensil intracavitary for the core bar that the injection needle carried disease germs is taken in injector for medical purpose, then optionally manually starting prevents from repeating to make With function, the overcoat and core bar of injector for medical purpose are locked together or do not locked together；Reaching in operating process to touch The purpose of syringe needle, so as to both the injection needle carried disease germs can be avoided to cause serious injury human body, can avoid repeatedly being made again With.
The injector for medical purpose of the present invention, realizing the rear portion of overcoat cavity has the circumferential projection of the positioning of convex, the periphery of core bar There are positioning axial projection and multiple positioning circumferential recess along the axial arranged distribution of core bar.Cause when rotating core bar in overcoat cavity The circumferential projection elastic deformation of positioning cross the positioning axial projection of core bar into the chosen positioning circumferential recess of core bar Afterwards, the chamber between the front end of the sealing ring for the core bar being constrained in overcoat cavity and the back cover portion of overcoat cavity forms medical The selected liquid capacity of syringe；The circumferential projection elastic deformation of the positioning in overcoat cavity is caused to cross core bar when rotating core bar Positioning circumferential recess remove core bar positioning circumferential recess after, manipulate core bar can make sealing ring in overcoat cavity by hand before After move；Reach that the pre-filled medicinal liquid amount of injector for medical purpose can be with the purpose of accurate lock.In operation, in overcoat cavity The working condition that auditory tone cues injector for medical purpose is sent during positioning circumference projection elastic deformation has been changed.
The injector for medical purpose of the present invention, realizes that safety-type disposable sterilized syringe or safety self-destructing disposably make It is of the invention with the part of the sheath of the part of an asepsis injector injection needle fewer than conventional disposable sterilized syringe Identical, the of the invention injector for medical purpose of the structure of the topping up chamber of injector for medical purpose and conventional disposable sterilized syringe Both reached and be easy to exclude the gas for filling chamber and be easy to the purpose of assembling, and reached that production cost and routine are disposable again The production cost of asepsis injector is similar, and than existing safety-type disposable sterilized syringe or safety self-destructing one Secondary property uses the much lower purpose of the production cost of asepsis injector.
It will thus be seen that above-mentioned stated target, including by those shown targets described above by effectively Reach.Described here is only the typical optimal form of implementation of the present patent application, can make some changes to said structure Change also without prejudice to the spirit and scope of the present invention.The present invention is not limited to detail set forth herein, and answers It is obvious any to retain as stated in the restriction of claim for art secondary technology personnel Improve or retrofit.

Claims (10)

1. a kind of interface of the instrument used for injection of injector for medical purpose, the injector for medical purpose includes overcoat and core bar；
It is described it is outer be cased with overcoat cavity, the overcoat cavity end opening before and after overcoat, the front end of the overcoat cavity respectively Have back cover portion, having in the front end in the back cover portion of the overcoat cavity has cone head hole in conehead, the conehead, the cone head hole with it is outer Cavity insertion is covered, has overcoat crimping at the rear portion of overcoat, has volume scale on the outer surface of overcoat；
The rear end of the core bar has by hand, and there is sealing ring front portion；The sealing ring of the core bar is inserted at overcoat cavity open rearward end After entering in overcoat cavity, manipulate the core bar can be such that sealing ring is moved forward and backward in overcoat cavity by hand, the outer wall of sealing ring Sealing with the inwall formation injector for medical purpose of overcoat cavity coordinates；
It is characterized in that：Injection needle, fog-spray nozzle or other various instruments used for injection, the cone of overcoat can be plugged on the conehead of the overcoat There is circular cone inclined-plane the rear end of head, and there are taper lip and bellmouth, the taper lip of instrument used for injection in the rear portion of the instrument used for injection Side is located at the rear portion of the bellmouth, and the conehead and circular cone inclined-plane of overcoat and taper lip and the bellmouth composition of instrument used for injection are noted The interface of emitter tool；When the bellmouth of instrument used for injection is inserted on the conehead of overcoat, instrument used for injection is fixed on the conehead of overcoat On；When pinching the taper lip of flat instrument used for injection, the circular cone inclined-plane of rear end of the taper lip along the conehead of overcoat is moved, so as to bore Shape lip pushing syringe tool is moved forward so that the bellmouth of instrument used for injection departs from the conehead of overcoat.
2. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, the cone of the instrument used for injection Axial groove is distributed with the wall of shape lip.
3. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, the side of the core bar has The utensil chamber of lateral openings, the utensil intracavitary can insert the instrument used for injection, and there are intracavitary circumferential recess, device in the rear end of utensil chamber Circumferential width at the lateral openings for the intracavitary circumferential recess for having chamber is less than the diameter of the taper lip of the instrument used for injection With the diameter of the intracavitary circumferential recess of the utensil chamber；When instrument used for injection is placed into the utensil intracavitary of core bar, instrument used for injection The taper lip elastic deformation is crossed at the lateral openings of intracavitary circumferential recess of utensil chamber, and the intracavitary into utensil chamber is circumferential In groove so that the taper lip of instrument used for injection is constrained in the intracavitary circumferential recess of utensil chamber, and instrument used for injection is constrained in Utensil intracavitary.
4. the interface of the instrument used for injection of injector for medical purpose according to claim 3, it is characterized in that, the hand of pressing of the core bar exists Side positioned at the utensil chamber is jagged；In the injector for medical purpose by before use, the instrument used for injection is placed into core bar Utensil intracavitary；In injector for medical purpose by use, being placed into the utensil chamber of core bar in being pinched by the indentation, there of hand for core bar The taper lip of interior instrument used for injection, takes out instrument used for injection at the lateral openings of utensil chamber, then by instrument used for injection The bellmouth be inserted on the conehead of the overcoat so that instrument used for injection is fixed on the conehead of overcoat.
5. the interface of the instrument used for injection of injector for medical purpose according to claim 4, it is characterized in that, in the injector for medical purpose After use, after the instrument used for injection being inserted on the conehead of the overcoat is removed, then by injection needle or the first-class injection of spraying The lateral openings of utensil from the utensil chamber dispose the utensil intracavitary into the core bar.
6. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, after the overcoat cavity There is the circumferential projection of the positioning of convex in portion, and there is projection axial constraint inclined-plane the axial both sides of the circumferential projection of the positioning, positioned respectively The circumferential both sides of circumferential projection have respectively projection circumferentially constraint inclined-plane；There is positioning circumferential recess the periphery of the core bar, multiple Axial arranged distribution of the positioning circumferential recess along core bar, fluted axial direction is distinguished in the axial both sides of each positioning circumferential recess Inclined-plane is constrained, the fluted circumferential constraint inclined-plane of circumferential both sides difference of each positioning circumferential recess positions the circumference of circumferential recess There is positioning axial projection side, and the peripheral side of the positioning axial projection has projection circumferentially constraint inclined-plane；Make when rotating core bar The projection for obtaining the positioning axial projection that the circumferential projection elastic deformation of the positioning in overcoat cavity crosses core bar is circumferentially constrained tiltedly After face enters in the chosen positioning circumferential recess of core bar, two grooves of the selected positioning circumferential recess of core bar Two projections of the circumferential constraint inclined-plane respectively with the circumferential projection of positioning in overcoat cavity are circumferentially mutually constrained on constraint inclined-plane, Core bar is hindered to be rotated in overcoat cavity, two groove axial constraint inclined-planes of the selected positioning circumferential recess of core bar Two projection axial constraint inclined-planes with the circumferential projection of positioning in overcoat cavity are mutually constrained respectively, hinder the institute of core bar State sealing ring to move forward and backward in overcoat cavity, front end and the overcoat cavity of the sealing ring for the core bar being constrained in overcoat cavity The back cover portion between chamber form the selected liquid capacity of the injector for medical purpose；Cause overcoat empty when rotating core bar The groove that the circumferential projection elastic deformation of positioning of intracavitary crosses the positioning circumferential recess of core bar circumferentially removes core bar in constraint inclined-plane Position after circumferential recess, the projection of the positioning axial projection of core bar circumferentially hinders the positioning in overcoat cavity circumferentially convex in constraint inclined-plane Block enters in the positioning circumferential recess of core bar, and manipulating the described of core bar can be such that sealing ring is moved forward and backward in overcoat cavity by hand.
7. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, after the overcoat cavity There is the circumferential projection of the locking of convex in portion, and there are projection axial constraint inclined-plane, the circumferential projection of locking in the axial direction of the circumferential projection of the locking Circumferential both sides have respectively projection circumferentially constraint inclined-plane；There is locking circumferential recess the periphery of the core bar, and the locking is circumferentially recessed The axially fluted axial constraint inclined-plane of groove, the fluted circumferential constraint inclined-plane of circumferential both sides difference of locking circumferential recess, locking The peripheral side of circumferential recess has locking axial projection；When rotating core bar the circumferential projection elasticity of the locking in overcoat cavity is become Shape cross core bar locking axial projection enter core bar locking circumferential recess in after, the locking circumferential recess of core bar it is described recessed The projection axial constraint inclined-plane on groove axial constraint inclined-plane and the circumferential projection of locking in overcoat cavity is mutually constrained, core bar Two grooves for locking circumferential recess circumferentially constrain two institutes of the inclined-plane respectively with the circumferential projection of locking in overcoat cavity State projection circumferentially mutually to constrain on constraint inclined-plane so that core bar is locked on overcoat cavity.
8. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, after the overcoat cavity There is the circumferential projection of the locking of convex in portion, and there are projection axial constraint inclined-plane, the circumferential projection of locking in the axial direction of the circumferential projection of the locking Circumferential both sides have respectively projection circumferentially constraint inclined-plane；There is locking circumferential recess the periphery of the core bar, and the locking is circumferentially recessed The axially fluted axial constraint inclined-plane of groove, the fluted circumferential constraint inclined-plane of circumferential both sides difference of locking circumferential recess, locking The axial sides of circumferential recess have the circumferential projection of locking；When promoting core bar the circumferential projection elasticity of the locking in overcoat cavity is become Shape cross core bar the circumferential projection of locking enter in the locking circumferential recess of core bar after, the locking circumferential recess of core bar it is described recessed The projection axial constraint inclined-plane on groove axial constraint inclined-plane and the circumferential projection of locking in overcoat cavity is mutually constrained, core bar Two grooves for locking circumferential recess circumferentially constrain two institutes of the inclined-plane respectively with the circumferential projection of locking in overcoat cavity State projection circumferentially mutually to constrain on constraint inclined-plane so that core bar is locked on overcoat cavity.
9. the interface of the instrument used for injection of injector for medical purpose according to claim 1, it is characterized in that, the overcoat includes topping up Bottle and outer cover；The liquid filling bottle has the first overcoat cavity, and the first overcoat cavity is respectively in front and rear end opening, and the first overcoat is empty There is back cover portion the front portion of chamber, and having in the front end in the back cover portion of the first overcoat cavity in conehead, the conehead has cone head hole, institute State cone head hole and the first overcoat cavity insertion；Described to be covered with the second overcoat cavity, the second overcoat cavity is respectively in outer cover Front and rear end opening, there are the buckle of convex, the circumferential projection of convex and the overcoat stretched out volume in the rear portion of the second overcoat cavity Side；When the second overcoat cavity of outer cover is wrapped in the periphery of liquid filling bottle, the snap hook of the second overcoat cavity of outer cover exists On the back edge of liquid filling bottle, liquid filling bottle is locked in the second overcoat cavity of outer cover, the conehead of liquid filling bottle is from the front end of outer cover Stretched out at opening；After the sealing ring of the core bar is inserted in the first overcoat cavity at the second overcoat cavity open rearward end, behaviour That indulges the core bar can be such that sealing ring is moved forward and backward in the first overcoat cavity by hand, the outer wall of sealing ring and the first overcoat cavity Inwall formed the injector for medical purpose sealing coordinate.
10. the interface of the instrument used for injection of injector for medical purpose according to claim 9, it is characterized in that, the of the liquid filling bottle Can plug the instrument used for injection of injection needle or fog-spray nozzle on the conehead of the front end in the back cover portion of one overcoat cavity, the outer cover it is described There is the circular cone inclined-plane of high inclination-angle at front opening；When the bellmouth of the instrument used for injection is inserted on the conehead of liquid filling bottle, injection Utensil is fixed on the conehead of liquid filling bottle；When pinching the taper lip of the flat instrument used for injection, taper lip is along before outer cover Circular cone inclined-plane movement at end opening, taper lip pushing syringe tool is moved forward so that the bellmouth of instrument used for injection departs from The conehead of liquid filling bottle.
CN201710345517.8A 2017-05-16 2017-05-16 Interface of injection device of medical injector Active CN106964027B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201710345517.8A CN106964027B (en) 2017-05-16 2017-05-16 Interface of injection device of medical injector
PCT/CN2017/109253 WO2018209899A1 (en) 2017-05-16 2017-11-03 Interface for injection needle of medical syringe injector
US16/082,169 US11154664B2 (en) 2017-05-16 2017-11-03 Interface of needle of medical syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710345517.8A CN106964027B (en) 2017-05-16 2017-05-16 Interface of injection device of medical injector

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CN106964027B CN106964027B (en) 2020-05-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018209899A1 (en) * 2017-05-16 2018-11-22 上海博洽医疗器械有限公司 Interface for injection needle of medical syringe injector
CN108926755A (en) * 2018-08-02 2018-12-04 上海博洽医疗器械有限公司 The injector for medical purpose that anti-needle is stabbed

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US4932941A (en) * 1988-03-14 1990-06-12 Min Kyung M Non-reusable disposable syringe
CN2673419Y (en) * 2004-01-05 2005-01-26 董永华 Self locking type injector
US20060264827A1 (en) * 2005-04-29 2006-11-23 Whang Michael G M Secure injector and operating method thereof
CN201030119Y (en) * 2007-02-14 2008-03-05 董忠浩 Safety syringe with the needle backing automatically
CN201453770U (en) * 2009-07-09 2010-05-12 张亚平 Safety syringe with separate syringe body and needle
CN202113444U (en) * 2011-06-24 2012-01-18 上海双鸽实业有限公司 Special insulin syringe
US20160008554A1 (en) * 2012-12-21 2016-01-14 Dietrich Walter Grabis Safe needle device for syringes
CN105597195A (en) * 2016-02-02 2016-05-25 黄沛敏 Disposable syringe
CN208212260U (en) * 2017-05-16 2018-12-11 上海博洽医疗器械有限公司 The interface of the instrument used for injection of injector for medical purpose

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932941A (en) * 1988-03-14 1990-06-12 Min Kyung M Non-reusable disposable syringe
CN2673419Y (en) * 2004-01-05 2005-01-26 董永华 Self locking type injector
US20060264827A1 (en) * 2005-04-29 2006-11-23 Whang Michael G M Secure injector and operating method thereof
CN201030119Y (en) * 2007-02-14 2008-03-05 董忠浩 Safety syringe with the needle backing automatically
CN201453770U (en) * 2009-07-09 2010-05-12 张亚平 Safety syringe with separate syringe body and needle
CN202113444U (en) * 2011-06-24 2012-01-18 上海双鸽实业有限公司 Special insulin syringe
US20160008554A1 (en) * 2012-12-21 2016-01-14 Dietrich Walter Grabis Safe needle device for syringes
CN105597195A (en) * 2016-02-02 2016-05-25 黄沛敏 Disposable syringe
CN208212260U (en) * 2017-05-16 2018-12-11 上海博洽医疗器械有限公司 The interface of the instrument used for injection of injector for medical purpose

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018209899A1 (en) * 2017-05-16 2018-11-22 上海博洽医疗器械有限公司 Interface for injection needle of medical syringe injector
CN108926755A (en) * 2018-08-02 2018-12-04 上海博洽医疗器械有限公司 The injector for medical purpose that anti-needle is stabbed

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