CN105498045A - Needle-free spring injector - Google Patents
Needle-free spring injector Download PDFInfo
- Publication number
- CN105498045A CN105498045A CN201610019414.8A CN201610019414A CN105498045A CN 105498045 A CN105498045 A CN 105498045A CN 201610019414 A CN201610019414 A CN 201610019414A CN 105498045 A CN105498045 A CN 105498045A
- Authority
- CN
- China
- Prior art keywords
- piston
- switch
- cylindrical shell
- needleless
- needle
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
- A61M5/31571—Means preventing accidental administration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/19—Constructional features of carpules, syringes or blisters
Abstract
The invention relates to the technical field of injectors and particularly discloses a needle-free spring injector. The needle-free spring injector comprises a tube body, a needle-free medicine storage assembly, a piston, a rear end cover and a spring arranged between the piston and the rear end cover. The left side of the piston is provided with a piston push rod of the needle-free medicine storage assembly, the rubber piston is connected to the front end of the piston push rod, and the rubber piston is located in the needle-free medicine storage assembly. A control mechanism for keeping or changing the state of the piston is arranged on the left side of the piston and comprises a switch, an elastic piece and a rotating shaft. The two ends of the switch are located outside the tube body, and the middle of the switch is located in the tube body. The elastic piece is located on the lower side of the rear segment of the switch. The rotating shaft is located in a shaft hole in the switch. A safety ring is arranged on the upper side of the front segment of the switch. The tube body is sleeved with the safety ring. The needle-free spring injector has the advantages that the structure of a triggering and pushing device is greatly simplified, operation is convenient, cost is low, the injection efficiency is high, and reliability is high.
Description
Technical field
The present invention relates to injector technology field, refer to a kind of needleless spring injector especially.
Background technology
Traditional syringe is by a kind of injection system of rustless steel syringe needle by infusion of medicine human body, this injection system is easy to cause local skin to damage, hemorrhage, the situation such as swell and ache, not only pain is remarkable, and make most of patients (especially infant) produce fear, also likely cause the danger of injection site infection.Needleless injection techniques utilizes high-pressure spray principle, makes medicinal liquid form thinner liquid stream, and moment transdermal arrival is subcutaneous, because the change of injection principle, medicinal liquid is at subcutaneous Dispersed precipitate, and onset time is faster, drug absorption rate is higher, can avoid the problems referred to above completely.
According to incompletely statistics, there are tens of manufacturers at present abroad producing nearly hundred kinds of not needleless injector products in specie, have progressively been applied in clinical treatment and family health care in this technology of developed country.The research of China to needleless injection techniques is still in the starting stage, only has only a few Ji Jia domestic enterprise can produce this series products so far.
At present needleless injector kind is on the market comparatively single, and mainly in order to the needleless device of injection of insulin, it drives power mainly to adopt spring powered, but plastic injection quality is compared external business men equipment and also had a certain distance, and while price comparison is high.
Syringe price is too expensive, too low concerning cost performance ordinary populace, due to the impact of the performance factor of power spring, causes injection pressure not enough, and cannot inject by expection requirement, the reliability neither one of injection ensures preferably.
Summary of the invention
The object of this invention is to provide a kind of needleless spring injector, safety, cost are low, injection efficiency is high, reliability is high.
To achieve these goals, present invention employs following technical scheme: a kind of needleless spring injector, comprise cylindrical shell, be installed on described cylindrical shell front end and for the needleless drug storage assembly of splendid attire injection or vaccine, in described cylindrical shell can along the longitudinal direction movement piston, be installed on barrel tip rear end cap, be located at spring between described piston and rear end cap;
The left side of described piston is the piston push rod of needleless drug storage assembly, and the front end of described piston push rod is connected to rubber piston, and described rubber piston is positioned at described needleless drug storage assembly;
The controlling organization keeping or change piston mode is provided with in described piston leftward position;
Described controlling organization comprises switch, shell fragment, gyroaxis; Described switch ends is positioned at outside cylindrical shell, and mid portion is positioned at cylindrical shell; Described shell fragment is positioned on the downside of switch back segment, and described gyroaxis is positioned at the axis hole on switch; On the upside of described switch leading portion, be provided with a relieving ring, described relieving ring is enclosed within cylindrical shell.
Wherein, described switch is connected with cylindrical shell by the flange of both sides on cylindrical shell, and switch is positioned in the middle of two flanges, realizes the relative motion with cylindrical shell with flange by gyroaxis is hinged.
Wherein, the junction of described cylindrical shell and switch is an opening that can hold switch mid portion wraparound axis of rotation.
Beneficial effect of the present invention is: structure of the present invention is simple, and parts are few, easy to make.There is higher stability, reliable plastic injection quality can be provided, ensure the abundant absorption of medicine; Because this syringe is disposable products, so the spring precision that there is not power spring use fatigue and cause reduces, affect the situation of injector to inject quality, so one can be had to ensure reliably to the plastic injection quality of syringe; This product is disposable products, equipment selection and structural design is made every effort under the premise that security is guaranteed succinctly, reliable, cost is low; Lower cost, has the larger market advantage, and market acceptance is comparatively large, is conducive to the universal of needleless injector.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present invention technical scheme, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only that the present invention is in order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in p-embodiment or description of the prior art is briefly described, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the cross-sectional view of the present invention's state to be injected;
Fig. 2 is the cross-sectional view of the present invention's inject state;
Fig. 3 is the contour structures schematic diagram of the present invention's state to be injected.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of needleless spring injector as shown in Figures 1 to 3, comprise cylindrical shell 1, be installed on the front end of described cylindrical shell 1 and for the needleless drug storage assembly 2 of splendid attire injection or vaccine, in described cylindrical shell 1 can along the longitudinal direction movement piston 5, be installed on cylindrical shell 1 end rear end cap 8, be located at spring 7 between described piston 5 and rear end cap 8; The left side of described piston 5 is the piston push rod 10 of needleless drug storage assembly, and the front end of described piston push rod 10 is connected to rubber piston 9, and described rubber piston 9 is positioned at described needleless drug storage assembly 2; When being in state to be injected, be provided with the controlling organization keeping or change piston mode in described piston 5 leftward position.
Described controlling organization comprises switch 4, shell fragment 6, gyroaxis 12; Described switch 4 two ends are positioned at outside cylindrical shell 1, and mid portion is positioned at cylindrical shell 1; Described shell fragment 6 is positioned on the downside of switch 4 back segment, and described gyroaxis 12 is positioned at the axis hole on switch 4; On the upside of described switch 4 leading portion, be provided with a relieving ring 3, described relieving ring 3 is enclosed within cylindrical shell 1.
Described switch 4 is connected with cylindrical shell 1 by the flange 11 of both sides on cylindrical shell 1, and switch 4 is positioned in the middle of two flanges 11, realizes the relative motion with cylindrical shell 1 with flange 11 by gyroaxis 12 is hinged.
Promote piston 5 compression power spring 7, till switch 4 seized piston 5, relieving ring 3 is gone to safety position, now syringe has resetted, the needleless drug storage assembly 2 that vaccine is housed to be tightened on syringe union joint as shown in Figure 1, now syringe has been in state to be injected, in order to prevent the situations such as maloperation, syringe relieving ring 3 should be made to be in reliable safety position; When injecting, relieving ring 3 being gone to inject state, just can carry out injection operation, is discardable syringe after having injected.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a needleless spring injector, is characterized in that: comprise cylindrical shell (1), be installed on the front end of described cylindrical shell (1) and for the needleless drug storage assembly (2) of splendid attire injection or vaccine, in described cylindrical shell (1) can along the longitudinal direction movement piston (5), be installed on cylindrical shell (1) end rear end cap (8), be located at spring (7) between described piston (5) and rear end cap (8);
The left side of described piston (5) is the piston push rod (10) of needleless drug storage assembly, the front end of described piston push rod (10) is connected to rubber piston (9), and described rubber piston (9) is positioned at described needleless drug storage assembly (2);
The controlling organization keeping or change piston mode is provided with in described piston (5) leftward position;
Described controlling organization comprises switch (4), shell fragment (6), gyroaxis (12), and described switch (4) two ends are positioned at cylindrical shell (1) outward, and mid portion is positioned at cylindrical shell (1); Described shell fragment (6) is positioned on the downside of switch (4) back segment, and described gyroaxis (12) is positioned at the axis hole on switch (4);
On the upside of described switch (4) leading portion, be provided with a relieving ring (3), described relieving ring (3) is enclosed within cylindrical shell (1).
2. a kind of needleless spring injector according to claim 1, it is characterized in that: described switch (4) is connected with cylindrical shell (1) by the flange (11) of the upper both sides of cylindrical shell (1), switch (4) is positioned in the middle of two flanges (11), realizes the relative motion with cylindrical shell (1) with flange (11) by gyroaxis (12) is hinged.
3. a kind of needleless spring injector according to claim 2, is characterized in that: described cylindrical shell (1) and the junction of switch (4) are an opening that can hold that switch (4) mid portion wraparound rotating shaft (12) rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019414.8A CN105498045A (en) | 2016-01-13 | 2016-01-13 | Needle-free spring injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019414.8A CN105498045A (en) | 2016-01-13 | 2016-01-13 | Needle-free spring injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105498045A true CN105498045A (en) | 2016-04-20 |
Family
ID=55706588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019414.8A Pending CN105498045A (en) | 2016-01-13 | 2016-01-13 | Needle-free spring injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105498045A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344205A (en) * | 2016-10-31 | 2017-01-25 | 湖北省国融商贸有限公司 | Needle-free high-speed jet flow injection syringe |
| CN108066854A (en) * | 2016-11-16 | 2018-05-25 | 浙江九天寰宇生物科技有限公司 | A kind of needleless hair style syringe |
| CN109621096A (en) * | 2016-11-05 | 2019-04-16 | 王才丰 | A kind of medical needleless injector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569189A (en) * | 1992-09-28 | 1996-10-29 | Equidyne Systems, Inc. | hypodermic jet injector |
| CN103977480A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Manpower-driven energy storage needleless syringe |
| CN205460227U (en) * | 2016-01-13 | 2016-08-17 | 北京步腾医学科技有限公司 | Needleless spring syringe |
-
2016
- 2016-01-13 CN CN201610019414.8A patent/CN105498045A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569189A (en) * | 1992-09-28 | 1996-10-29 | Equidyne Systems, Inc. | hypodermic jet injector |
| CN103977480A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Manpower-driven energy storage needleless syringe |
| CN205460227U (en) * | 2016-01-13 | 2016-08-17 | 北京步腾医学科技有限公司 | Needleless spring syringe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344205A (en) * | 2016-10-31 | 2017-01-25 | 湖北省国融商贸有限公司 | Needle-free high-speed jet flow injection syringe |
| CN109621096A (en) * | 2016-11-05 | 2019-04-16 | 王才丰 | A kind of medical needleless injector |
| CN109621096B (en) * | 2016-11-05 | 2020-05-12 | 胡晓华 | Medical needleless injector |
| CN108066854A (en) * | 2016-11-16 | 2018-05-25 | 浙江九天寰宇生物科技有限公司 | A kind of needleless hair style syringe |
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