CN1060217A - Valve for syringe - Google Patents

Valve for syringe Download PDF

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Publication number
CN1060217A
CN1060217A CN91105846A CN91105846A CN1060217A CN 1060217 A CN1060217 A CN 1060217A CN 91105846 A CN91105846 A CN 91105846A CN 91105846 A CN91105846 A CN 91105846A CN 1060217 A CN1060217 A CN 1060217A
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CN
China
Prior art keywords
valve
sub
syringe
valve pocket
pocket
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.)
Pending
Application number
CN91105846A
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Chinese (zh)
Inventor
约翰·亨利·亚当·巴特勒
亚历山大·斯图尔特·理查森
艾伦·福里斯特
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Individual
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Individual
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Publication date
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Publication of CN1060217A publication Critical patent/CN1060217A/en
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    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • 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
    • A61M5/31—Details
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/504—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway
    • A61M2005/5046—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway automatically, e.g. plug actuated by the piston head, one-way valve
    • A61M2005/5053—Valve or plug actuated by fluid flow or fluid pressure allowing initial filling of the syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Filtering Materials (AREA)
  • Ceramic Products (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

A kind of disposable syringe has the cylindrical wall of extending to its needle stand, and described wall has interior cylindrical surface, and this surface cooperates the part with the inner chamber that surrounds variable volume at least with a removable plunger.One valve module is positioned in the inner chamber to prevent the repeated use of syringe.Described valve comprises a valve seat to match with removable valve member, and described valve member can have spherical structure or other configuration.Described valve member can move to the downstream from the upstream side of valve seat to prevent the repeated use of syringe.

Description

Valve for syringe
The present invention relates to a kind of valve that is used for disposable syringe.
Disposable syringe easy to use is well-known, as be used for syringe to the injection of the insulin of diabetics, but have no idea to prevent that these syringes are repeated to use under non-aseptic state, consequently contaminated in use syringe causes transmissions of disease such as acquired immune deficiency syndrome (AIDS), hepatitis.
Therefore, wishing to design a kind of syringe can only disposable use and prevent its repeated use, thereby avoids using the danger of the syringe of infection.
Often have some medicines to deposit with Powdered, generally when this medicine need be used injector to inject, powdery medicine needed elder generation and solvent, and then is inhaled into syringe.
The method of above-mentioned use powdery medicine is not only time-consuming but also expensive.
Existing disposable syringe is normally by to the modification of syringe plunger so that its when full insertion state near syringe needle, the shortcoming of these existing devices be before liquid is inhaled into injector syringe plunger might by unexpected squeeze bad.
British patent 1,550,310 and French Patent (FRP) 2,348,708 have all proposed a kind of disposable syringe, and this syringe has a separable plunger to prevent the repeated use of syringe, in case plunger is moved into least volume position, because plunger rod separates with stopper head, thereby can prevent that plunger from moving and suction liquid once more.The shortcoming of this syringe is because whether plunger and plunger rod are separated and can not check syringe correctly to insert, and this check needs to pull out plunger and realize with the suction small amounts of blood by returning by plunger rod usually.British patent 2,015,883 also disclose similar a kind of syringe, and this device has also used separable plunger, thereby also has above-mentioned shortcoming.
French Patent (FRP) 2,298,340 also disclose a kind of disposable syringe, have a brittle diaphragm on its plunger, in case plunger is moved into least volume position, just have a bar to pierce through described thin film to prevent the repeated use of syringe.British patent 1,454,540 also have similar structures, wherein have one on the plunger and damage the device of syringe body to prevent the repeated use of syringe.The shortcoming of above-mentioned two kinds of syringes is whether correctly they can not test operation to check syringe needle location.
United States Patent (USP) 3,951,146 disclosed a kind of disposable syringes have ratchet device to prevent the rollback of plunger, and whether this special syringe can not check syringe needle to be properly oriented.British patent 2,184,657 also use a ratchet to come to mesh to prevent the repeated use of syringe with the plunger rear portion, and it has same shortcoming.United States Patent (USP) 3,478,937 and 3,890,971 also use ratchet or pawl element to stop the rollback of plunger to move, and they all have similar shortcoming.
United States Patent (USP) 4,233 has a plug element being meshed with a socket when plunger moves to least volume position on 975 disclosed a kind of disposable syringes, so that this plug can not rollback, thereby prevent the repeated use of syringe.
United States Patent (USP) 4,650, each patent of 468 similar above-mentioned discussion is because it has also used a plug or plunger to prevent to reuse to automatically lock the location.
It is that they need that all plunger is moved to least volume position and just can finish the action that it can not be reused that above-mentioned existing various disposable syringes also have a shortcoming.
International Application PCT/AU88/00402 discloses the multiple valve that is used for disposable syringe, every kind of valve all has removable valve member, and these valves are generally all complex-shaped and be difficult to make, in addition, removable valve member should partly be compressed at least at storage configuration, thereby has reduced the time that syringe can be deposited.
At description PCT/GB87/00728(WO88/02640) in a kind of syringe that has valve is disclosed, its valve has reed shape structure, wherein is provided with a valve seat and matches with the removable valve member of reed-type, described reed component can move by side to opposite side from valve seat one.This be it should be noted that this reed component permanently is installed on the valve body, and only turns to the next position that the shortcoming of this special construction is to be difficult to sealing, and device breaks down easily from a position.
By Becton Dickinson ﹠amp; Co. in the Australian patent application 28430/84 of Ti Chuing a kind of pair of composition cartridge syringe proposed, there is a main chamber to be separated in this syringe by a baffle plate, powder is deposited in one of them sub-chamber, another sub-chamber is deposited and is used for the liquid of dissolved powders, when using syringe, baffle plate is moved to certain position so that liquid mixes mutually with powder, and this special syringe is owing to the device that needs baffle plate and be used to remove baffle plate with liquid and powder mixes the time needs very high manufacturing cost.
The objective of the invention is to overcome or overcome above-mentioned shortcoming substantially.
Brief description of the present invention is as follows:
The present invention proposes a kind of disposable syringe valve, and this valve comprises:
One the valve pocket of hollow valve body to provide part to cross for flow of liquid to be injected at least of vertical passage is provided;
One annular lip, this lip extend internally so that a valve port to be provided from described valve body in described passage, and described valve pocket is divided into the first and second sub-valve pockets;
One removable valve member is enclosed in the described valve pocket, and has at least a part to begin to be positioned at the described first sub-valve pocket, but can move to the second sub-valve pocket through described valve port, its moving direction with the injection during the liquid stream direction consistent; It is characterized in that:
Described lip matches with valve member to prevent described valve member moving from the sub-valve pocket of the second sub-valve pocket to the first, and when described valve member is positioned at the second sub-valve pocket, this valve member is closed described valve effectively and is flowed towards the direction opposite with injection direction to stop liquid, to prevent the repeated use of syringe.
As the first best structure of implementing, described valve member has circular cross section, and preferably has spherical structure, and in this structure, described removable valve member only is made up of a described part.
As the second best structure of implementing, removable valve member comprises the another part that is connected to removable valve portion, and this another part always is positioned at the described second sub-valve pocket.
Here also having proposed a kind of syringe comprises:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from syringe;
One is horizontally through the porous wall of described passage, and liquid to be injected moves along with described volumetrical reducing by plunger and flows through this wall;
In described passage, be positioned at the soluble powder of described wall rear side; It is characterized in that:
Described porous wall be used to stop described powder enter syringe needle up to its particle size be decreased to below the given size or described powder dissolved.
Here also further having proposed a kind of disposable syringe comprises:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from plunger;
Be arranged in the valve of described passage, liquid to be injected this valve of must flowing through, this valve can prevent the repeated use of syringe, described valve comprises a leaf arrangement, described reed can be from movable between primary importance and the operating position, and when it was in primary importance, reed was horizontally through described passage and extends to prevent that liquid from flowing towards the direction opposite with injection direction, and when being in the operating position, allow liquid to flow into syringe needle from described inner chamber.
Here also having proposed a kind of syringe comprises:
One needle cylindrical unit, an end of this needle cylindrical unit ends at needle stand, and surrounds a cylindrical cavity;
One has the plunger of the stopper head that is positioned at described intracavity; And
Prevent that described stopper head rollback from described inner chamber from passing through the element of the described needle cylindrical unit other end.
That is to say that the present invention proposes a kind of disposable syringe valve, this valve comprises:
One the valve pocket of hollow valve body to provide part to cross for flow of liquid to be injected at least of vertical passage is provided;
One annular lip, this lip extend internally so that a valve port to be provided from described valve body in described passage, and described valve pocket is divided into the first and second sub-valve pockets;
One removable valve member is enclosed in the described valve pocket, and has at least a part to begin to be positioned at the described first sub-valve pocket, but can move to the second sub-valve pocket through described valve port, its moving direction with the injection during the liquid stream direction consistent; It is characterized in that:
Described lip matches with valve member to prevent described valve member moving from the sub-valve pocket of the second sub-valve pocket to the first, and when described valve member is positioned at the second sub-valve pocket, this valve member is closed described valve effectively and is flowed towards the direction opposite with injection direction to stop liquid, to prevent the repeated use of syringe;
Described removable valve member begins to be positioned at fully the first sub-valve pocket, and when being positioned at the second sub-valve pocket fully by with being sealed and matched of described lip to prevent the repeated use of syringe;
Described removable valve member has spherical structure, and described valve port has circular configuration, and its valve port diameter is less than the diameter of described valve member, described valve member and or described lip can strain so that described valve member moves to the second sub-valve pocket from the first sub-valve pocket;
Described valve body just in time matches with the outer ring wall of syringe;
Two sub-valve pockets all are positioned at described valve body;
Described valve body only surrounds the first sub-valve pocket;
Described valve body is partly formed by hollow cylinder part with the anterior axially extending truncated cone of described cylindrical part, has an annular lip until described valve port on the wherein said truncated cone part, described truncated cone partly has frusto-conical surface in, matches with described valve member from the sub-valve pocket moving process of the first sub-valve pocket to the second at valve member in this surface;
Valve further comprises described valve member is enclosed in part in the described first sub-valve pocket, and this part moves towards the direction opposite with flowing out the first sub-valve pocket in order to prevent described valve member;
The part of surrounding described valve member comprises the boss that is positioned on the valve body, and these boss are in the described passage inwardly protruding of the rear side that is arranged in described valve member;
Valve further comprises a porous wall, and this wall is positioned at the rear side of the described first sub-valve pocket, and liquid passes this wall and injected, and it is characterized in that described porous wall can stop the granule greater than given size to pass through;
The part of surrounding described valve body comprises one and has the wall of a transverse notch so that the described wall of major general is divided into two sheets of living, and described sheet deformable alive is so that pack described valve member in the first sub-valve pocket into;
Described porous wall remains on appropriate location in the syringe with described valve body;
Has the part that matches with described ring wall surface on the described valve body so that valve body is remained on the appropriate location.
Described valve for syringe also can be a kind of like this disposable syringe, and this syringe comprises:
Above-mentioned any one described valve;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand comprises a vertical passage, protruding shoulder is wherein arranged so that described needle stand passage links to each other to avoid might touching described valve member from the needle stand front end with a zigzag passage.
Described valve for syringe also can be a kind of like this disposable syringe, and this syringe comprises:
Described valve;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand matches with described valve body with the basic encirclement described second sub-valve pocket;
Described syringe further comprises and is positioned at the bossing that the second sub-valve pocket matches with described valve member and stops up the liquid flow of injection direction to prevent described valve member.
Described valve for syringe also can be a kind of like this disposable syringe, and this syringe comprises:
Above-mentioned any one described valve;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand comprises a needle stand cover joint and that surrounds described valve and is connected to needle connector on the described cover joint with the valve body engagement valve body is remained in cover saves;
Described removable valve member elastically deformable; It also can be described annular lip elastically deformable;
Described removable valve member is made up of first and second portion, described first constitutes the initial valve member part that is positioned at the first sub-valve pocket, and second portion is enclosed in the second sub-valve pocket, and wherein said first moves to the second sub-valve pocket to prevent the repeated use of syringe from the described first sub-valve pocket;
The longitudinal axis that described first has a guiding surface and valve acutangulates, and matches with lip and to help first's moving towards the second sub-valve pocket;
Described lip has an inclined-plane and matches with described first and move to the second sub-valve pocket to help described first from the first sub-valve pocket;
The lateral dimension of described first is greater than the size of described opening, described first and or the distortion of lip so that described first moves to the second sub-valve pocket from the first sub-valve pocket;
Thereby become to be sealed and matched with described lip when described first is positioned at the second sub-valve pocket and prevent the repeated use of syringe to close described valve port;
Have axially extended passage in the described first, flow of liquid is crossed described first when being positioned at the first sub-valve pocket when first, and when described first was positioned at the second sub-valve pocket, this passage was closed by described lip;
Described passage is the axially extended groove that is positioned on the described first circumference;
Has axially extended passage on the described second portion so that flow of liquid is crossed described second portion;
Described lip elastically deformable; It also can be described removable valve member elastically deformable;
Described lip elastically deformable, and described valve further comprises a ring packing flange, this flange extends axially along described passage to entering the described first sub-valve pocket from described lip, and match with described first in the described first sub-chamber, and resiliently deflectable is so that the liquid reverse flow is crossed described valve pocket;
Described valve further comprises a cyclic spring sealing flange, this flange extends axially to match with second portion when described first is positioned at the second sub-valve pocket along described passage to entering the second sub-valve pocket from described lip, thereby prevent the repeated use of syringe, and strain takes place when liquid flows through described valve pocket with injection direction and break away from sealing with described second portion and contact;
Have annular edge edge in the described first and match, and an annular edge is arranged on the described second portion along matching with the annular lip of charging into the second sub-valve pocket with the annular lip of charging into the first sub-valve pocket;
Described valve further comprises one and keeps second portion to seal the part of described valve port;
Described valve member is made by elastomeric material, and described valve body comprises from described lip to entering the described first sub-valve pocket along the axially extended sealing surfaces of described passage, wherein said first comprises a ring packing flange, this flange matches with described sealing surfaces when first is positioned at the first sub-valve pocket, and matches with described lip when described first is positioned at the second sub-valve pocket and close described valve port;
Strain takes place in described ring packing flange when passing valve port;
Described valve further comprises the element that makes liquid flow through described first along described injection direction when described first is positioned at the second sub-valve pocket;
Described valve is characterized in that, makes liquid comprise the bossing that makes described annular lip strain along the mobile element of described injection direction;
Described valve member is made by elastomeric material, and described valve body comprises from described lip to entering the described second sub-valve pocket along the axially extended sealing surfaces of described passage, and described valve member further comprises a ring packing flange to match to prevent the repeated use of syringe with the sealing surfaces of the second sub-valve pocket when described first is positioned at the second sub-valve pocket;
Described valve further comprises makes liquid flow through the part of described sealing flange along injection direction, and described sealing flange matches with the sealing surfaces of the second sub-valve pocket when first is arranged in the first sub-valve pocket;
Described valve further comprise from described lip to enter the first sub-valve pocket along the axially extended first surface of described passage and from described lip to entering the described second sub-valve pocket along the axially extended second surface of described passage, described first and second surfaces and described first effectively cooperate mobile with the realization valve member;
Described valve member comprises the cervical region that connects first and second portion, and described cervical region passes described valve port extension when first is positioned at the first sub-valve pocket;
Described first generally has circular cross section, and described opening also has circular configuration, and the diameter of first is greater than the diameter of described valve port;
The lateral dimension of described second portion greater than the diameter of described opening to prevent that second portion from passing valve port and entering the first sub-valve pocket;
Described removable valve member is made by elastomeric material, realizes moving from the sub-valve pocket of the first sub-valve pocket to the second so that first can be out of shape;
Described second portion comprises the boss that matches with described lip and prevents that second portion from moving into the first sub-valve pocket from the second sub-valve pocket;
Described first sealing surfaces comprises frusto-conical surface part and shrinks gradually to help first's moving from the sub-valve pocket of the first sub-valve pocket to the second along injection direction;
Described valve further comprises the filter element that is positioned at described passage that a liquid must pass through;
Described valve further comprises the filter element that is positioned at described passage that a liquid must pass through;
Strain when described first rear side has an opening to pass through valve port to help it;
Described first cooperates to prevent the repeated use of syringe with described lip seal when being positioned at the second sub-valve pocket.
Described syringe also comprises:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from syringe;
One is horizontally through the porous wall of described passage, liquid to be injected along with described volume by reducing of moving of plunger and flow through this wall;
In described passage, be positioned at the soluble powder of described wall rear side; It is characterized in that:
Described porous wall be used to stop described powder enter syringe needle up to its particle size be decreased to below the given size or described powder dissolved;
Described wall passes described inner chamber and extends in its front portion;
Described syringe further comprises described valve module and is arranged in its described passage to prevent the repeated use of syringe.
Described valve for syringe also can be to comprise:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from syringe;
Be arranged in the valve of described passage, liquid to be injected this valve of must flowing through, this valve can prevent the repeated use of syringe, described valve comprises a leaf arrangement, described reed can be from movable between primary importance and the operating position, and when it was in primary importance, reed was horizontally through described passage and extends to prevent that liquid from flowing towards the direction opposite with injection direction, and when being in the operating position, allow liquid to flow into syringe needle from described inner chamber;
Described valve comprises a cylinder shape valve and in the anterior truncated cone part of extending of this valve body, described truncated cone partly is separated so that two reed components to be provided at least, and this element can between closed position and operating position resilient bias take place.
The previously described valve that is used for disposable syringe can be referring to accompanying drawing.
Described valve for syringe also can be that a kind of like this syringe comprises:
One needle cylindrical unit, an end of this needle cylindrical unit ends at needle stand, and surrounds a cylindrical cavity;
One has the plunger of the stopper head that is positioned at described intracavity; And
Prevent that described stopper head rollback from described inner chamber from passing through the element of the described needle cylindrical unit other end;
Described syringe is a disposable syringe;
Described element comprises bossing, and this bossing matches with described stopper head during in contiguous described other end place's internal protrusion and when the approaching described other end of described stopper head in described inner chamber;
Described bossing is some ratchets, and described ratchet can be movable between first and second positions, can prevent the rollback of stopper head when described ratchet is in the second position;
Allowing stopper head to pass the described other end when described ratchet is in primary importance is inserted into and is positioned in the inner chamber;
Described bossing comprises the part of described needle cylindrical unit, this part can be by distortion inwardly protruding radially;
Described bossing is deformable boss, this boss can be from movable between radially outer position and the interior location, when it is in external position, allow described stopper head to be positioned in the described inner chamber, and can prevent the rollback of described stopper head when being in interior location by the described other end;
Aforesaid disposable syringe can be referring to accompanying drawing.
For example most preferred embodiment of the present invention is described below with reference to accompanying drawings, wherein:
Fig. 1 is the vertical profile sketch map that comprises the part of the disposable syringe that prevents the reusable valve of syringe;
Fig. 2 is the sketch map of looking closely of syringe part shown in Figure 1;
Fig. 3 is the vertical profile sketch map that syringe shown in Figure 1 partly is in another operating position;
Fig. 4 be equipped with the disposable syringe that prevents the reusable valve of syringe the vertical profile sketch map of a part;
Fig. 5 is the sketch map of looking closely of syringe part shown in Figure 4;
Fig. 6 is the vertical profile sketch map that syringe shown in Figure 4 partly is in another operating position;
Fig. 7 is the sketch map of looking closely that is loaded on the interior removable valve member of syringe shown in Figure 4;
Fig. 8 is the schematic side view of valve member shown in Figure 7;
Fig. 9 is that another of valve member shown in Figure 7 looked closely sketch map;
Figure 10 is the vertical profile sketch map of a part that the disposable syringe of valve is housed;
Figure 11 is the vertical profile sketch map of the part of another disposable syringe that valve is housed;
Figure 12 be comprise the disposable syringe that prevents the reusable valve of syringe the vertical profile sketch map of a part;
Figure 13 is another vertical profile sketch map of syringe shown in Figure 12;
Figure 14 is the local vertical profile sketch map of the disposable syringe after syringe shown in Figure 12 is made amendment;
Figure 15 is the local vertical profile sketch map that syringe shown in Figure 12 is carried out another kind of amended disposable syringe;
Figure 16 be equipped with the disposable syringe that prevents the reusable valve of syringe the vertical profile sketch map of a part;
Figure 17 is the vertical profile sketch map of the part of another syringe;
Figure 18 is the vertical profile sketch map of part shown in Figure 17;
Figure 19 is the vertical profile sketch map of the disposable syringe after syringe shown in Figure 16 is made amendment;
Figure 20 is the exploded sketch of syringe part shown in Figure 19;
Figure 21 is the schematic side view (A) that is loaded on the refill-unit of the valve pocket in the disposable syringe shown in Figure 16, vertical profile sketch map (B) and look closely sketch map (C);
Figure 22 be loaded on valve pocket in the disposable syringe shown in Figure 16 look closely sketch map (A), vertical profile sketch map (B) and schematic side view (C);
Figure 23 be loaded on valve pocket in the disposable syringe shown in Figure 19 look closely sketch map (A), schematic side view (B) and vertical profile sketch map (C);
Figure 24 is the schematic side view of the syringe of syringe;
Figure 25 is the vertical profile sketch map that the end of syringe shown in Figure 24 is cut open along line A-A as shown in figure 26;
Figure 26 is the sketch map of looking closely of syringe shown in Figure 24;
Figure 27 is the schematic side view that syringe shown in Figure 24 is in non-confined state;
Figure 28 vertical profile sketch map that to be syringe shown in Figure 27 end cut open along line B-B as shown in figure 29;
Figure 29 is the sketch map of looking closely of syringe shown in Figure 27;
Figure 30 is the vertical profile sketch map that syringe shown in Figure 24 C-C along the line cuts open;
Figure 31 is the schematic side view of the end of modified syringe;
Figure 32 vertical profile sketch map that to be syringe shown in Figure 31 end cut open along line A-A as shown in figure 33;
Figure 33 is the sketch map of looking closely of syringe shown in Figure 31;
Figure 34 is the syringe shown in Figure 31 vertical profile sketch map that its end is cut open along line B-B as shown in figure 33 when being in non-confined state;
Figure 35 is the sketch map of looking closely of syringe shown in Figure 34 end;
Figure 36 is the schematic side view of the end of another amended syringe;
Figure 37 is the vertical profile sketch map that syringe shown in Figure 36 end C-C along the line cuts open;
Figure 38 vertical profile sketch map that to be syringe shown in Figure 36 end cut open along line A-A as shown in figure 39;
Figure 39 is the sketch map of looking closely of syringe shown in Figure 36 end;
Figure 40 is the cross-sectional sketch map of syringe part shown in Figure 41;
Figure 41 is the vertical profile sketch map of syringe shown in Figure 36 end when being in open mode;
Figure 42 is the sketch map of looking closely of syringe shown in Figure 41 end;
Figure 43 is the schematic side view of injector syringe through the amended end of another kind;
Figure 44 vertical profile sketch map that to be syringe shown in Figure 43 end cut open along line A-A as shown in figure 45;
Figure 45 is the sketch map of looking closely of syringe shown in Figure 43 end;
Figure 46 vertical profile sketch map that to be syringe shown in Figure 43 end cut open along line B-B as shown in figure 47;
Figure 47 is the sketch map of looking closely of syringe shown in Figure 46 end;
Figure 48 is the schematic side view of the plunger assembly that is used with aforementioned various syringes or syringe;
Figure 49 is the cross-sectional sketch map that plunger assembly shown in Figure 48 A-A along the line cuts open;
Figure 50 is the cross-sectional sketch map that plunger assembly shown in Figure 48 B-B along the line cuts open;
Figure 51 is the schematic side view of plunger assembly shown in Figure 48 when being in non-confined state;
Figure 52 is the schematic side view of a syringe;
Figure 53 is the sketch map of looking closely of syringe shown in Figure 52;
Figure 54 is the schematic side view of syringe shown in Figure 1 when syringe being housed being in assembling position;
Figure 55 is the sketch map of looking closely of syringe shown in Figure 54;
Figure 56 is that syringe shown in Figure 54 is along the vertical profile sketch map of cutting open as the timberline A-A of Figure 57 institute;
Figure 57 is the sketch map of looking closely of syringe shown in Figure 56;
Figure 58 is the schematic side view of the plunger end of a syringe;
Figure 59 is the floor map of the part of plunger shown in Figure 58;
Figure 60 is the schematic side view of plunger shown in Figure 58;
Figure 61 is the sketch map of looking closely of plunger shown in Figure 60;
Figure 62 is the floor map of plunger shown in Figure 60;
Figure 63 is the sketch map of looking closely of plunger shown in Figure 62;
Figure 64 is the vertical profile sketch map of syringe end shown in Figure 56.
Fig. 1-3 has schematically described the structure of the targeting part 10 of disposable syringe, this targeting part 10 comprises the needle stand 11 that stretches to cylindrical wall 12, described wall 12 has a cylindrical form interior surface 13, matches with a removable plunger with the part of the inner chamber 14 that surrounds variable volume at least in this surface; Along the plunger extension is that a plunger rod is operated for user, when plunger retreated, liquid to be injected was inhaled into inner chamber 14, for liquid infusion, plunger can be moved towards reducing inner chamber 14 volumetrical directions, thereby force liquid to flow out through needle stand 11 and dress syringe needle thereon.
One valve module 15 is installed in the inner chamber 14 to prevent the repeated use of syringe.
Described valve module comprises a hollow valve body 16, and this valve body has the first valve body part 17 and the second valve body part 18 that cooperatively interact to be passed through for liquid to be injected so that a passage 19 to be provided; One valve pocket 20 is installed in the passage 19 so that a valve pocket 21 to be provided, and has an elastic ring lip 22 on the described valve pocket 20, and this lip is divided into the first sub-valve pocket 23 and the second sub-valve pocket 24 with valve pocket 21, and described lip 22 also forms a valve port 25 simultaneously.
One removable valve member 26 is enclosed in the valve pocket 21, and in this embodiment, this valve member is a ball type device.Described valve member 26 is by making such as glass or the such rigid material of rustless steel.
The described first valve body part 17 has an end wall 27, has passage 28 on it and crosses for flow of liquid and enter valve pocket 21.The second valve body part 18 has end wall 29, has passage 30 on it so that the passage 31 on second valve pocket 24 and the needle stand 11 is connected.
Valve pocket 20(its lip certainly also is) make so that valve member 26 can pass through valve port 25 by the strain of lip by elastomeric material.
When targeting part 10 is housed, when the disposable syringe that valve module 15 is housed of saying so more specifically is used, the plunger of syringe is in the decompression position of proximate valves assembly 15 earlier, user is oppositely twitched plunger liquid to be injected is entered inner chamber 14 by the syringe needle suction and by needle stand 11, flow of liquid is crossed the passage 30 and the second sub-valve pocket 24, liquid flows through the valve port 25 and the first sub-valve pocket 23 by the second sub-valve pocket 24 more then, and flows out by passage 28.Removable valve member 26 has a gap with respect to the wall that forms the first sub-valve pocket 23.Then, depression of plunger is with air-out gently for user, and at this moment, or when liquid is injected, valve member 26 will move and stop up valve port 25.Yet because user affacts the effect of the pressure on the liquid to be injected, valve member 26 makes ring packing lip 22 strains, thereby the valve port 25 that passes after the expansion enters the second sub-valve pocket 24, as shown in Figure 3.Along with plunger is further depressed, liquid will flow through passage 28 and enter the first sub-valve pocket 23, and liquid flows through valve port 25 from the first sub-valve pocket 23 then, and flow out through passage 30 by the second sub-valve pocket 24 again.At this moment, removable valve member 26 has a gap with respect to the wall that forms the second sub-valve pocket 24.In case injection process is finished, owing to pulling out plunger and will make removable valve member 26 retainings on sealed lip 22, seal valve port 25, thereby prevent the repeated use of syringe for the liquid inhalation syringe is returned.Can see that a circular bead surface 32 is arranged on the ring packing lip 22, this circular bead surface matches with valve member 26 and prevents that it from passing through valve port 25 and moving backward.On other direction, sealing lip 22 provides a truncated cone inclined-plane 33 to make sealed lip 22 distortion and make it enter the second sub-valve pocket 24 from the first sub-valve pocket 23 to help removable valve member 26.Should be noted that described sealed lip 22 is made by elastomeric material so that move to the process of the second sub-valve pocket 24 from the first sub-valve pocket 23 at valve member 26, strain only takes place in described sealed lip 22, and in case removable valve member 26 when being positioned at the second sub-valve pocket 24, promptly recovers its normal shape.
In some cases, preferably guarantee that by sucking small amounts of blood syringe needle is properly oriented, this can still realize under the situation in the first sub-valve pocket 23 at removable valve member 26, when air during by emptying, user can insert syringe needle and pumpback plunger and with in the blood inhalation syringe, then, when plunger was depressed, the pressure of liquid can force removable valve member to enter the second sub-valve pocket 24.
At initial position or deposit position, valve member 26 and or lip 22 are pressurizeds not.
In the above-described embodiments, lip 22 is owing to valve member 26 is inflexible the distortion with respect to it.Certainly, as another kind of situation, if lip 22 is inflexible with respect to it, valve member 26 also can be out of shape.As another situation, lip 22 and valve member 26 can be deformable.
Fig. 4-9 has schematically described the structure of the parts 40 of disposable syringe, and these parts 40 comprise the front end of cylindrical wall 41, and this front end points to needle stand 42, has a passage 43 in the described needle stand 42, and liquid to be injected flows through syringe needle by this passage 43 and injected.Described cylindrical wall 41 has a cylindrical form interior surface 44, and this surface becomes to be slidingly matched to change the volume of work inner chamber 45 with plunger.
Be installed in the cylindrical wall 41 is valve module 46, this valve module 46 comprises the hollow valve body 47 of a formation valve pocket 48, what extend internally in described valve pocket 48 is a ring packing lip 49, this lip 49 is divided into the first sub-valve pocket 50 and the second sub-valve pocket 51 with valve pocket 48, described lip 49 is in aggregates with the remainder of valve body 47, and is made by elastomeric material.Have a truncated cone inclined-plane 52 and a circular bead surface 53 on this lip 49, this circular bead surface becomes the plane to extend, and vertical substantially with axle 54.
Removable valve member 55 with first 56 and second portion 57 is positioned at valve pocket 48, and described first 56 is connected with second portion 57 by cervical region 58.
Cervical region 58 passes the valve port 59 that is formed by sealed lip 49.
The structure of removable valve member 55 is shown in Fig. 6-8, described first 56 comprises a cylindrical part 60, one or more axially extended groove 61 is arranged on it, and what connect cervical region 58 and cylindrical part 60 is a frusto-conical surface 62, so that first 56 easily makes lip 49 distortion and passes valve port 59.
Described second portion 57 comprises a cylindrical part 63, has one or more axially extended groove 64 on it, has boss 66 on the end face 65, and described boss is along valve member 55 longitudinal extensions, and abuts against on the surface 53.Groove 61 leaves axle 54 certain distances layout so that its distance that radially arrives axle 54 is more farther than the distance of the medial end that arrives sealed lip 49.The groove 64 of longitudinal extension also has identical structure.
Removable valve member 55 is made by the material that has bigger rigidity than the material of making lip 49.
When the disposable syringe that valve module 46 is housed is used, can removable valve member part 56 be sent into the second sub-valve pocket 51 from the first sub-valve pocket 50 by the strain of sealed lip 49 and prevent the repeated use of syringe.
Valve module 46 is in original position as shown in Figure 4, and when this position, the plunger of syringe is in pressed status, and the reverse withdrawing plunger of user sucks inner chamber 45 with liquid to be injected, and flow of liquid is crossed syringe needle and needle stand 42, and flows through valve module 46 through groove 61 and 64.Described boss 66 avoids 53 one-tenth sealings of groove 64 and wall to contact.Then, the user air in the depression of plunger emptying syringe gently.Can insert syringe needle and returning gently when needing and pull out plunger with the small amounts of blood inhalation syringe, to guarantee the correct location of syringe needle.Then, user is defeated lower plunger so that fluid pressure acts on the moveable part 56 so that lip 49 is out of shape with enough big, enters in the second sub-valve pocket 51, as shown in Figure 6 thereby make moveable part 56 pass valve port 59.Because groove 61 has been sealed surface 52, this moving is inevitable.Therefore, if injecting fluid just must apply enough big power to finish the conveying that moveable part 56 enters the second sub-valve pocket 51.In case enter the second sub-valve pocket 51, liquid can enter injection needle through groove 61 and 64.In case injection process is finished, syringe just can not reuse.As also attempting the liquid inhalation syringe, cylindrical part 56 promptly abuts against on the wall 53 and seals valve port 59, and this point should give the credit to the sealing on 61 pairs of surfaces 53 of groove.
Boss 66 can remove so that the end of valve port 59 is simpler after groove 64 is extended certain degree of depth.
At original position or deposit position, when parts 56 were in the first sub-valve pocket, valve member 55 is pressurized not.
Figure 10 has schematically described the structure of the parts 70 of disposable syringe, and described parts 70 comprise cylindrical wall 71, has a cylindrical form interior surface 72 on this wall 71 becoming to be slidingly matched with plunger, and surrounds the inner chamber 73 of variable volume to small part.One needle stand 74 is arranged for syringe needle 75 is installed on the front end of described wall 71, be provided with a valve module 76 in the inner chamber 73, this valve module comprises the hollow valve body of being made by elastomeric material 77, described valve body 77 provides a valve pocket 78, a sealed lip that extends internally 79 is arranged valve pocket 78 is divided into two sub-valve pockets 80 and 81 on this valve body 77.Have forward an annular lip 82 on the described valve body 77, this flange radially inwardly and towards the direction of needle stand 74 shrinks gradually, and the rear side of this valve body 77 has another flange 83, and this flange has loop configuration.
One removable valve member 84 is enclosed in the valve pocket 78, and this valve member 84 is made by the material bigger than the material stiffness of making valve body 77, and valve body 77 can be made by elastomeric material.
Have first a ring packing edge 85 that matches with flange 83 on the described removable valve member 84, other has one second ring packing edge 86 to match with flange 82.There is the boss 87 that begins to extend from its surface to withstand the surface 88 of lip 79 on the edge 86 to prevent edge 86.
The diameter at edge 85 is greater than the diameter of the valve 89 that is provided by lip 79, and the diameter at edge 86 is also greater than the diameter of valve port 89.
Parts 70 are being housed, and especially in the disposable syringe of valve module 76, liquid is inhaled in the inner chamber 73 through syringe needle 75 and valve pocket 78.To this, it should be noted that flange 83 flexibly outward radial skew to clean annular edge 85 so that the flow of liquid mistake.When the plunger of syringe when the syringe needle direction moves, the pressure in the inner chamber 73 forces the 85 one-tenth sealings in flange 83 and edge to contact.Then, the intravital pressure of liquid forces removable valve member 84 to move so that it enters in the sub-valve pocket 81 fully, this can be when passing valve port 89 along with edge 85 sealed lip 79 strains take place realizes.
Then, air is discharged from syringe.Insert syringe needle and mobile plunger liquid is penetrated from syringe, liquid breaks away from the strain at edge 86 and flows through valve module 76 by flange 82.
By the contact of the sealing between flange 82 and the edge 86, and the repeated use of syringe is realized preventing in edge 85 near sealed lip 79.
Figure 11 has schematically described the structure of the part 90 of disposable syringe, and described part 90 comprises a cylindrical wall 91 so that cylindrical surface 92 to be provided, and this surface becomes to be sealed and matched with plunger so that small part is surrounded the work inner chamber 93 of variable volume.One needle stand 94 is arranged so that syringe needle 95 to be installed on the front end of described wall 91.
One valve module 96 is arranged in inner chamber 93, and this valve module 96 comprises a hollow valve body 97 so that a valve pocket 98 to be provided.Described valve body 97 is made up of two valve body parts 99 and 100, wherein has axially extended muscle 101 on 99, and these muscle are arranged on the apparent surface of valve pocket 98, have axially extended recess 102 on the described valve body part 99.Have a ring packing lip 103 on the valve body part 100 to form a valve port 104, have a supporting surface 105 on the described lip 103.What extend back from described lip 103 is the rear portions of a frusto-conical surface 106 radial expansion towards syringe.Described lip 103 is divided into the first sub-valve pocket 107 and the second sub-valve pocket 108 with valve pocket 98.
What be positioned at valve pocket 98 is a removable valve member 109, and this valve member is made by elastomeric material, and valve body 97 is made by rigid material.Described valve member has first 116 and second portion 117, has an annular lip 110 on the second portion 117 of valve member so that a ring packing edge 111 to be provided.Also have an annular lip that extends back 112 on the described valve member 109, this flange have an annular edge along 113 to form first 116.Edge 111 and 113 radial outer diameter are greater than the diameter of valve port 104.Surface 106 helps to make flange 112 and edge 113 distortion.
What be positioned at valve module 109 centers is some boss 114 that radially extend, and these boss are by preventing that valve module 109 from axially entering sub-valve pocket 107 and crossing moving of position shown in the figure and valve module 109 is remained on the appropriate location.
In use parts 90 are housed, especially during the syringe of valve module 96, liquid moves and is inhaled in the syringe by plunger being deviated from needle stand 94, liquid enters syringe needle 95, and flow through valve pocket 98 through recess 102, annular lip 112 skew is so that annular edge breaks away to seal with surface 106 along 113 contacts, direction mobile plunger towards needle stand 94 applies hydraulic pressure to give valve member 109 then, thereby valve member 109 is moved, so that it enters in the sub-valve pocket 108 fully, this moving can be realized by means of the strain at flange 112 and edge 113, in case it enters sub-valve pocket 108 fully, liquid just can tilt and flow to syringe needle 95 from sub-valve pocket 107 by means of flange 110 and the annular edge inside elasticity along 111, liquid also flows through edge 113 through recess 102, thus by means of annular edge along 111 and the inwall 115 of valve body part 99 between the sealing contact can realize preventing the repeated use of syringe.In addition, also can by means of annular edge along 113 and sealed lip 103 between sealing contact the repeated use that realizes preventing syringe.
Boss 114 as an alternative, available muscle 101 block annular edge along 111 to prevent that valve member 109 from crossing moving axially of position shown in the figure towards sub-valve pocket 107.
Be positioned at the initial period of sub-valve pocket 107 in first 116, valve member 109 is pressurized not.
Figure 12 and 13 has schematically described the structure of the targeting part 120 of disposable syringe, described targeting part 120 comprises a needle stand or cover saves 121 so that syringe needle 122 to be installed, described cover joint 121 is hollow, and to form a truncated cone wall 123, this wall 123 matches with valve module 125.Described valve module 125 comprises one and has anterior 126 valve pocket 124, described anterior 126 also have the truncated cone structure, and to match with wall 123, described valve pocket 124 has a rear portion 127, this rear portion also has the truncated cone structure, to match with the preceding convex portion 128 of injector syringe 129.
Valve module 125 comprises a valve pocket 130 to support removable valve member 131, the sub-valve pocket 133 of sub-valve pocket 132 and back before described valve pocket 130 is divided into by an annular lip 134, and described annular lip 134 forms a valve port 152.Have a circular seal surface 135 on the described lip 134, this radial surface extends, and coaxial with the longitudinal axis of valve pocket 124, and what extend back from sealing surfaces 135 is a truncated cone inclined-plane 137, and this surface extends to cylindrical surface 138 always.Described sub-valve pocket 133 is linked up mutually with the inboard of injector syringe 129.
Sub-valve pocket 133 is surrounded by surface 137 and 138, and sub-valve pocket 132 is surrounded by cylindrical surface 136.
What be fixed on valve pocket 124 front ends is a drainage screen 139, and the front portion of this drainage screen 139 is shaping pieces 154, and this shaping piece abuts against on the edge 141 of cover joint 121.
Removable valve member 131 has a central shaft 140, and this central shaft has circular cross section, so that it has cylindrical structural.The front portion of described axle 140 is to have the radially ratchet part 141 of boss 142, is passage 143 between boss 142.
From the extension of described axle 140 rear sides is the hermetic unit 144 with annular seal surface 145.
In the embodiment shown in Figure 12 and 13, valve pocket 124 is made by the relative stiffness material, and removable valve member 131 is made by deformable elastomeric material.
In the work process of above-mentioned valve module 125, begin removable valve member 131 and be in position as shown in figure 12, but at this position operating syringe to suck liquid by syringe needle, liquid flows through the syringe 129 of valve module 125 up to syringe through valve pocket 130, more particularly, liquid also flows through passage 143.The size of hermetic unit 144 should make liquid to flow through at it with between surperficial 138.
Then, air is discharged from syringe, described air passes through between hermetic unit 144 and surface 138, and discharges through syringe needle 122 by passage 143.In case the back side contacts of liquid and hermetic unit 144, removable valve member 131 just 137 move and cause the strain of hermetic unit 144 along the inclined-plane, thereby hermetic unit 144 will be out of shape to pass lip 134 and be positioned in the sub-valve pocket 132.Therefore, hermetic unit 144 is moved to sub-valve pocket 132 from sub-valve pocket 133 are the action of pressure that exist because of in hermetic unit 144 both sides, and during this period, strains take place valve member 131.
As shown in figure 13, removable valve member 131 is positioned in the sub-valve pocket 132.In this position, liquid passes through between hermetic unit 144 and surface 136, after flow of liquid is crossed hermetic unit 144, flows through passage 143 again and discharges through syringe needle 122.
As shown in figure 13, removable valve member 131 does not extend along the whole length of sub-valve pocket 132, and this makes and can then the liquid in the syringe be discharged by syringe needle 122 with the small amounts of blood inhalation syringe for checking to guarantee that syringe needle correctly inserts the location.
Because removable valve member 131 oppositely moves and makes annular seal surface 145 and sealing surfaces be sealed and matched for 135 one-tenth, thereby has closed valve port 152 effectively, therefore can avoid the repeated use of syringe by means of valve module 125.
As shown in figure 12, boss 142 remained on the tram with removable valve member 131 before using.
Valve module 125 preferably has dividing plate or other pieces are used to prevent that the rear side by valve pocket 124 from damaging removable valve member 131.In addition, in a single day valve module 125 is positioned on the syringe 129, preferably can be fixed and be unlikely to be removed.
Surface 137 helps the distortion of hermetic unit 144.
As modification to valve module 125 shown in above-mentioned Figure 12 and 13, removable valve member 131 can be made by the relative stiffness material, and sealed lip 134 is made by elastomeric material, thereby removable valve member 131 can be realized by means of the strain of lip 134 by moving of lip 134.
Figure 14 has schematically described the modification to valve module 125 shown in Figure 12 and 13, in this embodiment, the valve pocket 124 of valve module 125 is integral with the syringe 129 of syringe, and dividing plate 154 is integral with cover joint 121, and drainage screen 139 directly is clipped between the targeting part and cover joint 121 of valve pocket 124.
In this embodiment, hermetic unit 144 has rear side recess 153 to increase the deformability of hermetic unit 144.
Figure 15 schematically represents the another kind of the valve module 125 shown in Figure 12 and 13 is revised.
In this embodiment, cover joint 121 is closed valve module 125 fully, and cover joint 121 has a frusto-conical surface or cylindrical surface 146, matches with the outer surface 147 of valve pocket 124 in this surface.In addition, have an annular edge along 148 on the cover joint 121, this edge matches with baffle unit 149 to prevent the rear side damage threshold assembly 125 by cover joint 121.Drainage screen 139 is sandwiched in the end of valve pocket 124 and overlaps between the front end of joint 121.
Be fixed on the front portion 128 of syringe 129 for for good and all overlapping joint 121, be provided with a plurality of annular barb 150 and be meshed with the annular recess 151 that cover saves on 121.
In most preferred embodiment shown in Figure 15, valve pocket can be installed in the cover joint 121 in interference fit, so that it relies on the friction location, perhaps also available components 149 is locked in position by being clasped.
In addition, valve pocket 124 is made by the material that has certain rigidity relatively, and removable valve member 131 is made by the elastomeric material that has certain flexibility relatively.As a kind of modification, valve pocket 124 can be made by elastomeric material, and removable valve member 131 is made by rigid material.
In Figure 12-15 illustrated embodiment, removable valve member 131 and or the initial or deposit position of lip 134 when hermetic unit 144 is positioned at sub-valve pocket 133 pressurized not.
Figure 16-22 has schematically described the structure of the targeting part 160 of disposable syringe, described targeting part 160 comprises a needle stand 161, this needle stand 161 extends towards cylindrical wall 162, described wall 162 has a cylindrical form interior surface 163, this surface becomes to be sealed and matched with removable plunger, so that small part is surrounded the work inner chamber 164 of variable volume.One plunger rod begins to extend from plunger to be operated for user.Wherein also be provided with other part and be used for preventing plunger rollback in inner chamber 164.When plunger retreated, liquid to be injected was inhaled into inner chamber 164.When needing injecting fluid, plunger is moved forward to reduce the volume of inner chamber 164, flow out through needle stand and dress syringe needle thereon to force liquid.
Inner chamber 164 is outstanding forward with sutaining valve assembly 165 from cylindrical surface 163, and this valve module 165 can prevent the repeated use of syringe.
Valve module 165 comprises a hollow valve body 166, this valve body 166 comprises a cylindrical part 167, stretch out a truncated cone part 168 forward from this part 167, this truncated cone part 168 has the interior truncated cone wall 193 that extends towards valve port 169, and described truncated cone part 168 ends at valve port 169.Described valve port 169 is linked up mutually with valve pocket 170, and a removable valve member 171 is enclosed in the described valve pocket, and in this particular example, it has cylindrical structural.Described removable valve member 171 is enclosed in the valve pocket 170 by means of bossing 172, described bossing 172 is parts of cylindrical part 167, having three bossings 172 evenly arranges around the longitudinal axis equal angles ground of cylindrical part 167, the shape of described bossing 172 should make removable valve member 171 move by it, and be positioned at position shown in Figure 17, this makes and removable valve member 171 can be placed in the valve pocket 170, be to realize this point, cylindrical part 167 and or removable valve member 171 should be able to strain.
Valve module 165 is positioned in the needle stand 161 by means of an inner circular bead 173 and a porous disc 174, and described porous disc 174 becomes to be clasped in cannelure 175.
Frusto-conical surface 168 elastically deformables and or removable valve member 177 elastically deformables so that removable valve member 171 can pass valve port 169 enter before sub-valve pocket 176.
The fin 177 that has longitudinal extension on the front end of needle stand 161 to be being meshed with removable valve member 171, prevents its inner lip of closing needle stand 161 178 when being positioned at sub-valve pocket 176 when removable valve member 171.One vertical passage 179 is arranged on the needle stand 161, and described fin stretches into this passage, set up in the passage 179 inwardly protruded be that shoulder 180 is to provide the path of a bending with respect to passage 179.
In the operating process of above-mentioned valve module 165, liquid can be inhaled into syringe by moving backward of plunger, when removable valve member 171 is arranged in valve pocket 170, liquid can flow through around removable valve member 171, when liquid needs by injection, plunger is moved forward, and the pressure in the liquid forces removable valve member 171 by means of removable valve member 171 and or the strain of truncated cone part 168 and by valve port 169.In case removable valve member 171 is in the sub-valve pocket 176, because removable valve member 171 is resisted against on the fin 177, liquid can flow through around removable valve member 171.Owing to anyly attempt plunger oppositely moved and the action of liquid inhalation syringe all will be caused oppositely moving until matching with valve seat 181 around valve port 169 of removable valve member 171, thereby can prevent the repeated use of syringe.
Porous disc 174 can flow through liquid from its centre, and stops granule by arriving syringe needle, if deposited powder in the syringe in sub-valve pocket 181, this structure is very useful.In this special construction, pulverous medicine can be stored in syringe, is injected with the liquid mixing and the dissolving back of inhalation syringe then.
Figure 17 and 18 schematically represents the modification to the syringe part 160 shown in Figure 16 and 17, in this embodiment, removed porous disc 174, and valve body 167 is provided with an annular boss 182, and this boss 182 is clasped mutually with annular recess 183 in the needle stand 161.
Figure 19 schematically represents the further modification to syringe part 160, in this embodiment, has a rear wall 184 on the valve body, having a notch 185 on this wall flows through for liquid, described notch 185 is divided into two sheets 186 of living with rear wall 184, and this two lives sheet 186 elastically deformables so that described removable valve member 171 is packed in the valve pocket 170.
In addition, needle stand 161 is divided into cylindrical shroud joint 187 and needle stand adapter 188, have on the cover joint 187 annular boss 189 with adapter 188 in annular recess be clasped for 190 one-tenth.Have shoulder 173 on the adapter 188, and also have shoulder 191 on the wall 161.Having an annular lip 192 on the valve body 166 is sandwiched between the end and shoulder 191 of adapter 188.This ad hoc structure is arranged in valve pocket 164 by making valve body 166, and by means of adapter 188 location that is fixed, and helps the installation of valve module 165.
Figure 21 has schematically represented to replace with valve member 200 structure of valve module 165, in this embodiment, valve member 200 comprises valve body 201, this valve body 201 has cylindrical part 202, and begin to extend to form a tapering part 203 from it, have a transverse notch 204 on the described tapering part 203 tapering part 203 is divided into two reeds, this reed 205 plays leaf valve, and described reed 205 allows liquid to flow towards injection direction.In this embodiment, must add liquid to be injected in advance to syringe.
In the various embodiments described above, removable valve member or lip elastically deformable are exactly because it should be noted that its both elastically deformables just can make valve member pass valve port in whole or in part and move.
Figure 24-30 has schematically described the structure of injector syringe 210.Represented syringe 210 is used for illustrating that the stopper head with plunger assembly is enclosed in syringe in Figure 25.Figure 27 and 30 represented syringes 210 are convenient to the installation of plunger with respect to syringe 210.
Described syringe 210 comprises a cylinder type hollow needle cylindrical unit 211, is needle stand 212 and the inner chamber 213 that is used to install valve module 214 in its front portion, and described valve module 214 can be the valve module shown in Figure 23.Described needle cylindrical unit 211 rear ends are to hold flange 215, this flange 215 extends laterally in the both sides of needle cylindrical unit 211, has ratchet 216 on the next door of flange 215, described ratchet 216 can be movable between radially outer position and inner radial position, can allow the installation of plunger assembly with respect to syringe 210 in the radially outer position, in the inner radial position, stopper head can be remained on nipped position in the needle cylindrical unit 211, this clamps the position shown in Figure 24-26, and the position that the permission plunger is installed is shown in Figure 27-29.Each ratchet 216 all is pivotally connected on the flange 215 with a fillet 217, the distortion of described fillet make coupled ratchet 216 from its external position activity to interior location, in addition, one recess 218 and bossing 219 are all arranged on each ratchet, and pair of openings 220 is arranged on the needle cylindrical unit 211, this two opening is just in time accepted described ratchet 216, so that the part 221 of needle cylindrical unit 211 is clasped for 218 one-tenth with recess.In the described position of clamping, bossing 219 in syringe to projecting inward to prevent the rollback of stopper head.Can prevent in the needle cylindrical unit 211 being installed in the damage of the valve module in the needle cylindrical unit 211 by stopper head being clamped be positioned at.In addition, also can keep away the repeated use that face is equipped with the syringe of check valve assembly, promptly can not only depend on and stopper head is extracted and be reloaded liquid in from syringe 210 rear sides toward syringe, insert stopper head then and realize the loading once more of syringe.
To above-mentioned ratchet 216, it should be noted that ratchet is realized and being clasped of needle cylindrical unit 211 in the mode that moves to radially outer.
Figure 31-35 schematically represents the modification to described injector syringe 210, and in this embodiment, ratchet 230 has rectangular configuration, is located in the opening 220 by distortion.
Figure 36-42 schematically represents to adopt other method that stopper head is clamped to be positioned at the intravital structure of syringe.Figure 36-42 has schematically represented the syringe 240 of syringe, described syringe 240 has a cylindrical needle cylindrical shell 241, its initiating structure has cylinder form as shown in figure 41, yet, in case stopper head is inserted in the needle cylindrical unit 241, the sidepiece 242 of needle cylindrical unit 241 is a strain, and inwardly protruding is to prevent the rollback of stopper head.
Figure 43-47 has schematically described the structure of injector syringe 240, described syringe 240 has needle cylindrical unit 241, has the flange of holding 242 at its end, in this embodiment, having a pair of deformable boss 243 can be movable between radially outer position and inner radial position, in its radially outer position, allows plunger is installed on the syringe 240, and can prevent the rollback of stopper head in its inner radial position, the nipped position of stopper head is shown in Figure 44 and 45.
Various syringes shown in above-mentioned Figure 24-47 are made by elastomeric material, described needle cylindrical unit and corresponding ratchet and or boss and hold flange and all be integral.
Figure 49-51 has schematically described and has been used for the plunger assembly 250 that is connected with aforementioned any syringe, described plunger assembly 250 comprises a plunger axis 251, at the one end one stopper head 254 is arranged, described plunger axis is made up of two sections axially extended shaft parts 252 and 253, this two shaft part is pivotally connected on the stopper head 254 with fillet 255, shaft part 252 and 253 end all have bossing 256, to form flange for the user grasping.The recess 257 that the latter end of described shaft part 252 has a shaping with shaft part 253 on have a shape that is complementary bossing be clasped for 258 one-tenth, plunger 250 under this assembling mode correspondingly has axially extended central opening 259, and described opening 259 will be meshed with the boss 243 shown in the ratchet shown in Figure 24-35 and Figure 43-47.In addition, opening 259 will match with the crushed element 242 shown in Figure 36-42.
Figure 52-57 has schematically described a kind of disposable syringe 260, described syringe 260 comprises an injector syringe 261, one needle stand is arranged with mounting of syringe syringe needle 263 at its front end, one check valve 265 is arranged in the needle cylindrical unit 264, this valve can be a check valve shown in Figure 22, and Figure 64 has more clearly represented needle stand 261 and valve 265.
End at needle cylindrical unit 264 has flange of holding 266 and pair of openings 267.A pair of ratchet 268 is installed in rotation on the flange 266, and described ratchet 268 is externally movable between position (shown in Figure 52) and the interior location (shown in Figure 56).In position shown in Figure 52, the rear side of needle cylindrical unit 264 is inserting with permission stopper head assembly 269 of opening, in case stopper head assembly 269 is positioned in the needle cylindrical unit 264, rotates ratchet 268, and makes its distortion to pass opening 267.In case be in position shown in Figure 56, ratchet 268 just can not rotate again, thereby prevent stopper head 269 rear side rollback, thereby also prevented to pull out stopper head 269 and realize the repeated use of syringe from the rear portion to the syringe liquid of reloading by returning by needle cylindrical unit 264.
Each ratchet 268 all is rotatably mounted by the axle 270 that is supported by flange 266.
Plunger 271 comprises an axially extended plunger axis 272, has axially extended recess 273 to be meshed with ratchet 268 on this axle.For example, the plunger assembly 280 shown in Figure 58-63, described plunger assembly 280 comprises one 281, and this 281 has axially extended recess 282 to be meshed with the ratchet 268 of previous embodiment.Described plunger assembly 280 further comprises a stopper head 283, has a sealing ring 284(or a packing ring on it), the rear end of described axle 281 has the flange of holding 285.

Claims (64)

1, a kind of disposable syringe valve, this valve comprises:
One the valve pocket of hollow valve body to provide part to cross for flow of liquid to be injected at least of vertical passage is provided;
One annular lip, this lip extend internally so that a valve port to be provided from described valve body in described passage, and described valve pocket is divided into the first and second sub-valve pockets;
One removable valve member is enclosed in the described valve pocket, and has at least a part to begin to be positioned at the described first sub-valve pocket, but can move to the second sub-valve pocket through described valve port, its moving direction with the injection during the liquid stream direction consistent; It is characterized in that:
Described lip matches with valve member to prevent described valve member moving from the sub-valve pocket of the second sub-valve pocket to the first, and when described valve member is positioned at the second sub-valve pocket, this valve member is closed described valve effectively and is flowed towards the direction opposite with injection direction to stop liquid, to prevent the repeated use of syringe.
2, valve according to claim 1 is characterized in that, described removable valve member begins to be positioned at fully the first sub-valve pocket, and when being positioned at the second sub-valve pocket fully by with being sealed and matched of described lip to prevent the repeated use of syringe.
3, valve according to claim 2, it is characterized in that, described removable valve member has spherical structure, described valve port has circular configuration, its valve port diameter is less than the diameter of described valve member, and described valve member and/or described lip energy strain are so that described valve member moves to the second sub-valve pocket from the first sub-valve pocket.
4, valve according to claim 3 is characterized in that, described valve body just in time matches with the outer ring wall of syringe.
5, valve according to claim 4 is characterized in that, two sub-valve pockets all are positioned at described valve body.
6, valve according to claim 4 is characterized in that, described valve body only surrounds the first sub-valve pocket.
7, according to the described valve of any one claim in 3 to 6, it is characterized in that, described valve body is partly formed by hollow cylinder part with the anterior axially extending truncated cone of described cylindrical part, has an annular lip until described valve port on the wherein said truncated cone part, described truncated cone partly has frusto-conical surface in, matches with described valve member from the sub-valve pocket moving process of the first sub-valve pocket to the second at valve member in this surface.
8, further comprise according to the described valve of any one claim in 3 to 7 described valve member is enclosed in part in the described first sub-valve pocket, this part moves towards the direction opposite with flowing out the first sub-valve pocket in order to prevent described valve member.
9, valve according to claim 8 is characterized in that, the part of surrounding described valve member comprises the boss that is positioned on the valve body, and these boss are in the described passage inwardly protruding of the rear side that is arranged in described valve member.
10, further comprise a porous wall according to the described valve of any one claim in 3 to 9, this wall is positioned at the rear side of the described first sub-valve pocket, liquid passes this wall and is injected, and it is characterized in that described porous wall can stop the granule greater than given size to pass through.
11, valve according to claim 9 is characterized in that, the part of surrounding described valve body comprises one and has the wall of a transverse notch so that the described wall of major general is divided into two sheets of living, and described sheet deformable alive is so that pack described valve member in the first sub-valve pocket into.
12, valve according to claim 10 is characterized in that, described porous wall remains on appropriate location in the syringe with described valve body.
13, valve according to claim 4 is characterized in that, has the part that matches with described ring wall surface on the described valve body so that valve body is remained on the appropriate location.
14, a kind of disposable syringe comprises:
Any one described valve in the claim 1 to 13;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand comprises a vertical passage, protruding shoulder is wherein arranged so that described needle stand passage links to each other to avoid might touching described valve member from the needle stand front end with a zigzag passage.
15, a kind of disposable syringe comprises:
The described valve of claim 6;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand matches with described valve body with the basic encirclement described second sub-valve pocket.
16, syringe according to claim 15 further comprises and is positioned at the bossing that the second sub-valve pocket matches with described valve member and stops up the liquid flow of injection direction to prevent described valve member.
17, a kind of disposable syringe comprises:
Any one described valve in the claim 1 to 16;
A needle stand, described valve is positioned at this needle stand; It is characterized in that:
Described needle stand comprises a needle stand cover joint and that surrounds described valve and is connected to needle connector on the described cover joint with the valve body engagement valve body is remained in cover saves.
18, according to the described valve of any one claim in 3 to 17, it is characterized in that described removable valve member elastically deformable.
19, according to the described valve of any one claim in 3 to 17, it is characterized in that described annular lip elastically deformable.
20, valve module according to claim 1, it is characterized in that, described removable valve member is made up of first and second portion, described first constitutes the initial valve member part that is positioned at the first sub-valve pocket, and second portion is enclosed in the second sub-valve pocket, and wherein said first moves to the second sub-valve pocket to prevent the repeated use of syringe from the described first sub-valve pocket.
21, valve according to claim 20 is characterized in that, the longitudinal axis that described first has a guiding surface and valve acutangulates, and matches with lip and to help first's moving towards the second sub-valve pocket.
22, valve according to claim 20 is characterized in that, described lip has an inclined-plane and matches with described first and move to the second sub-valve pocket to help described first from the first sub-valve pocket.
23, valve according to claim 20 is characterized in that, the lateral dimension of described first is greater than the size of described opening, described first and or the distortion of lip so that described first moves to the second sub-valve pocket from the first sub-valve pocket.
24, valve according to claim 23 is characterized in that, prevents the repeated use of syringe thereby become to be sealed and matched with described lip when described first is positioned at the second sub-valve pocket to close described valve port.
25, valve according to claim 24, it is characterized in that having axially extended passage in the described first, flow of liquid is crossed described first when being positioned at the first sub-valve pocket when first, and when described first was positioned at the second sub-valve pocket, this passage was closed by described lip.
26, valve according to claim 25 is characterized in that, described passage is the axially extended groove that is positioned on the described first circumference.
27, according to claim 24 or 25 described valves, it is characterized in that having axially extended passage on the described second portion so that flow of liquid is crossed described second portion.
28, according to claim 23 or 24 described valves, it is characterized in that described lip elastically deformable.
29, according to claim 23 or 24 described valves, it is characterized in that described removable valve member elastically deformable.
30, according to claim 23 or 24 described valves, it is characterized in that, described lip elastically deformable, and described valve further comprises a ring packing flange, this flange extends axially along described passage to entering the described first sub-valve pocket from described lip, match with described first in the described first sub-chamber, and resiliently deflectable is so that the liquid reverse flow is crossed described valve pocket.
31, valve according to claim 30 further comprises a cyclic spring sealing flange, this flange extends axially to match with second portion when described first is positioned at the second sub-valve pocket along described passage to entering the second sub-valve pocket from described lip, thereby prevent the repeated use of syringe, and strain takes place when liquid flows through described valve pocket with injection direction and break away from sealing with described second portion and contact.
32, valve according to claim 31 is characterized in that, has annular edge edge in the described first and matches with the annular lip of charging into the first sub-valve pocket, and an annular edge is arranged along matching with the annular lip of charging into the second sub-valve pocket on the described second portion.
33, valve according to claim 32 further comprises the part that a maintenance second portion seals described valve port.
34, valve according to claim 23, it is characterized in that, described valve member is made by elastomeric material, and described valve body comprises from described lip to entering the described first sub-valve pocket along the axially extended sealing surfaces of described passage, wherein said first comprises a ring packing flange, this flange matches with described sealing surfaces when first is positioned at the first sub-valve pocket, and matches with described lip when described first is positioned at the second sub-valve pocket and close described valve port.
35, valve according to claim 34 is characterized in that, strain takes place when passing valve port described ring packing flange.
36, valve according to claim 34 further comprises the element that makes liquid flow through described first along described injection direction when described first is positioned at the second sub-valve pocket.
37, valve according to claim 35 is characterized in that, makes liquid comprise the bossing that makes described annular lip strain along the mobile element of described injection direction.
38, according to claim 23 or 34 or 36 described valves, it is characterized in that, described valve member is made by elastomeric material, and described valve body comprises from described lip to entering the described second sub-valve pocket along the axially extended sealing surfaces of described passage, and described valve member further comprises a ring packing flange to match to prevent the repeated use of syringe with the sealing surfaces of the second sub-valve pocket when described first is positioned at the second sub-valve pocket.
39, further comprise according to the described valve of claim 38 and make liquid flow through the part of described sealing flange along injection direction, described sealing flange matches with the sealing surfaces of the second sub-valve pocket when first is arranged in the first sub-valve pocket.
40, according to claim 20 or 23 or 24 described valves further comprise from described lip to enter the first sub-valve pocket along the axially extended first surface of described passage and from described lip to entering the described second sub-valve pocket along the axially extended second surface of described passage, described first and second surfaces and described first effectively cooperate mobile with the realization valve member.
According to the described valve of claim 40, it is characterized in that 41, described valve member comprises the cervical region that connects first and second portion, described cervical region passes described valve port extension when first is positioned at the first sub-valve pocket.
According to the described valve of claim 41, it is characterized in that 42, described first generally has circular cross section, and described opening also has circular configuration, and the diameter of first is greater than the diameter of described valve port.
43, according to the described valve of claim 42, it is characterized in that, the lateral dimension of described second portion greater than the diameter of described opening to prevent that second portion from passing valve port and entering the first sub-valve pocket.
According to the described valve of claim 39, it is characterized in that 44, described removable valve member is made by elastomeric material, realize moving so that first can be out of shape from the sub-valve pocket of the first sub-valve pocket to the second.
According to the described valve of claim 44, it is characterized in that 45, described second portion comprises the boss that matches with described lip and prevents that second portion from moving into the first sub-valve pocket from the second sub-valve pocket.
According to the described valve of claim 45, it is characterized in that 46, described first sealing surfaces comprises frusto-conical surface part and shrinks gradually to help first's moving from the sub-valve pocket of the first sub-valve pocket to the second along injection direction.
47, further comprise the filter element that is positioned at described passage that a liquid must pass through according to claim 1 or 20 described valves.
48, further comprise the filter element that is positioned at described passage that a liquid must pass through according to the described valve of claim 39.
49, according to the described valve of claim 45, it is characterized in that the strain when described first rear side has an opening to pass through valve port to help it.
According to claim 39 or 43 described valves, it is characterized in that 50, described first cooperates to prevent the repeated use of syringe with described lip seal when being positioned at the second sub-valve pocket.
51, a kind of syringe comprises:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from syringe;
One is horizontally through the porous wall of described passage, liquid to be injected along with described volume by reducing of moving of plunger and flow through this wall;
In described passage, be positioned at the soluble powder of described wall rear side; It is characterized in that:
Described porous wall be used to stop described powder enter syringe needle up to its particle size be decreased to below the given size or described powder dissolved.
According to the described syringe of claim 51, it is characterized in that 52, described wall passes described inner chamber and extends in its front portion.
53, comprise further according to claim 51 or 52 described syringes that any one described valve module is arranged in its described passage to prevent the repeated use of syringe in the claim 1 to 50.
54, a kind of disposable syringe comprises:
One plunger and one is mated the syringe of the work inner chamber that forms variable volume;
One comprises the passage of described inner chamber, and this passage begins to extend and be communicated with described syringe needle from syringe;
Be arranged in the valve of described passage, liquid to be injected this valve of must flowing through, this valve can prevent the repeated use of syringe, described valve comprises a leaf arrangement, described reed can be from movable between primary importance and the operating position, and when it was in primary importance, reed was horizontally through described passage and extends to prevent that liquid from flowing towards the direction opposite with injection direction, and when being in the operating position, allow liquid to flow into syringe needle from described inner chamber.
55, according to the described syringe of claim 54, it is characterized in that, described valve comprises a cylinder shape valve and in the anterior truncated cone part of extending of this valve body, described truncated cone partly is separated so that two reed components to be provided at least, and this element can between closed position and operating position resilient bias take place.
56, the previously described valve that is used for disposable syringe can be referring to accompanying drawing.
57, a kind of syringe comprises:
One needle cylindrical unit, an end of this needle cylindrical unit ends at needle stand, and surrounds a cylindrical cavity;
One has the plunger of the stopper head that is positioned at described intracavity; And
Prevent that described stopper head rollback from described inner chamber from passing through the element of the described needle cylindrical unit other end.
According to the described syringe of claim 57, it is characterized in that 58, described syringe is a disposable syringe.
According to the described syringe of claim 58, it is characterized in that 59, described element comprises bossing, this bossing matches with described stopper head during in contiguous described other end place's internal protrusion and when the approaching described other end of described stopper head in described inner chamber.
According to the described syringe of claim 59, it is characterized in that 60, described bossing is some ratchets, described ratchet can be movable between first and second positions, can prevent the rollback of stopper head when described ratchet is in the second position.
61, according to the described syringe of claim 60, it is characterized in that, when described ratchet is in primary importance, allow stopper head to pass the described other end and be inserted into and be positioned in the inner chamber.
According to the described syringe of claim 59, it is characterized in that 62, described bossing comprises the part of described needle cylindrical unit, this part can be by distortion inwardly protruding radially.
63, according to the described syringe of claim 59, it is characterized in that, described bossing is deformable boss, this boss can be from movable between radially outer position and the interior location, when it is in external position, allow described stopper head to be positioned in the described inner chamber, and can prevent the rollback of described stopper head when being in interior location by the described other end.
64, aforesaid disposable syringe can be referring to accompanying drawing.
CN91105846A 1990-08-29 1991-08-29 Valve for syringe Pending CN1060217A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK2009 1990-08-29
AUPK200990 1990-08-29

Publications (1)

Publication Number Publication Date
CN1060217A true CN1060217A (en) 1992-04-15

Family

ID=3774925

Family Applications (1)

Application Number Title Priority Date Filing Date
CN91105846A Pending CN1060217A (en) 1990-08-29 1991-08-29 Valve for syringe

Country Status (6)

Country Link
EP (1) EP0497958A4 (en)
JP (1) JPH05503236A (en)
KR (1) KR920702238A (en)
CN (1) CN1060217A (en)
BR (1) BR9105889A (en)
WO (1) WO1992004064A1 (en)

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CN105963828A (en) * 2014-07-21 2016-09-28 李为松 Intravenous injector needle
CN106237444A (en) * 2011-04-08 2016-12-21 佳迈特股份有限公司 Filter pin
CN107469196A (en) * 2017-07-31 2017-12-15 郑州康佳医疗器械有限公司 A kind of precision liquid medicine filter
CN109550113A (en) * 2017-09-27 2019-04-02 B.布劳恩梅尔松根股份公司 Medical injector device
CN110236942A (en) * 2019-06-28 2019-09-17 江苏迪沃生物制品有限公司 The accurate dispenser of the universal automatic switchover of one kind and its application method

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WO1993023099A1 (en) * 1992-05-19 1993-11-25 Med-Plastic Ag Single use injection device
AUPM871994A0 (en) * 1994-10-11 1994-11-03 Moore, Colin Campbell Marshall Mini syringe and carry case
KR100902784B1 (en) * 2007-05-28 2009-06-12 김용무 Filter device and medicine injection apparatus comprising the same
US8070721B2 (en) 2008-08-01 2011-12-06 Abu Dhabi National Industrial Projects Co. Auto-disable device for syringes
EP2153856B1 (en) * 2008-08-12 2016-01-13 Abu Dhabi National Industrial Projects Co. Auto disable device for syringes
WO2010105836A1 (en) 2009-03-19 2010-09-23 Csl Behring Gmbh Connecting unit having valve that is opened by the fluid pressure
US20140316336A1 (en) * 2011-01-11 2014-10-23 Abu Dhabi National Industrial Projects Co. Auto-disable safety syringe
WO2012161685A1 (en) * 2011-05-23 2012-11-29 Boehringer Ingelheim International Gmbh Nebulizer
KR102086478B1 (en) * 2017-12-26 2020-03-09 천건혁 A syringe with non-recyclable needle

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CN106237444A (en) * 2011-04-08 2016-12-21 佳迈特股份有限公司 Filter pin
CN105963828A (en) * 2014-07-21 2016-09-28 李为松 Intravenous injector needle
CN105963828B (en) * 2014-07-21 2019-01-01 李为松 A kind of intravenous injector syringe needle
CN107469196A (en) * 2017-07-31 2017-12-15 郑州康佳医疗器械有限公司 A kind of precision liquid medicine filter
CN107469196B (en) * 2017-07-31 2018-10-02 西安互邦过滤膜新材料科技有限公司 a kind of liquid medicine filter
CN109550113A (en) * 2017-09-27 2019-04-02 B.布劳恩梅尔松根股份公司 Medical injector device
CN109550113B (en) * 2017-09-27 2023-06-13 B.布劳恩梅尔松根股份公司 Medical injection device
CN110236942A (en) * 2019-06-28 2019-09-17 江苏迪沃生物制品有限公司 The accurate dispenser of the universal automatic switchover of one kind and its application method

Also Published As

Publication number Publication date
BR9105889A (en) 1992-11-24
EP0497958A4 (en) 1993-09-15
KR920702238A (en) 1992-09-03
WO1992004064A1 (en) 1992-03-19
EP0497958A1 (en) 1992-08-12
JPH05503236A (en) 1993-06-03

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