CN104288871A - Self-service type injection gun - Google Patents
Self-service type injection gun Download PDFInfo
- Publication number
- CN104288871A CN104288871A CN201410594435.3A CN201410594435A CN104288871A CN 104288871 A CN104288871 A CN 104288871A CN 201410594435 A CN201410594435 A CN 201410594435A CN 104288871 A CN104288871 A CN 104288871A
- Authority
- CN
- China
- Prior art keywords
- syringe
- entry needle
- needle
- quill housing
- self
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/204—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically connected to external reservoirs for multiple refilling
-
- 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
- A61M5/31513—Piston constructions to improve sealing or sliding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/206—With automatic needle insertion
Landscapes
- 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)
Abstract
The invention relates to the field of medical instruments, in particular to a self-service type injection gun. The self-service type injection gun comprises a sleeve shell, an injection device and a pushing device. The injection device comprises an elastic piece, an injection needle, a syringe, a piston and a remaining needle. Sealed contact is adopted between the wall of the lower end of the syringe and the injection needle and between the piston and the side wall of the syringe, so that a sealed cavity is formed in an inner cavity, below the piston, of the syringe. The upper end face of the injection needle is sealed. A through hole is formed in the side wall of the injection needle. The through hole is located in the sealed cavity. The pushing device comprises pressing and feeding pieces and pushing and feeding pieces. One end of each pressing and feeding piece is hinged to the outer wall of the sleeve shell. The outer end of each pushing and feeding device is hinged to the inner surface of the corresponding pressing and feeding piece. Limiting grooves which can be connected with the inner ends of the pushing and feeding pieces in a clamped mode are formed in the outer surface of the side wall of the syringe. The outer end of each pushing and feeding piece penetrates through a hole formed in the side wall of the sleeve shell to be connected with the corresponding limiting groove in the clamped mode. The self-service type injection gun has the advantages of being convenient to carry, easy to operate, accurate in injection and capable of being used for injection on multiple parts of a human body.
Description
Technical field
The present invention relates to field of medical device, be in particular a kind of self-service filling gun.
Background technology
Injection is one of most basic treatment means of modern medicine, is therefore one of the most basic, most hard work of healthcare givers for patient carries out injection in daily curative activity.Due to some objective reasons, the development of the medical resource of current China does not also catch up with the demand of society to medical resource, thus the work of healthcare givers is day by day heavy, also there will be medical personnel one time is difficult to take all sufferers into account when sufferer is numerous, and causes the generation of incuring loss through delay phenomenon inject time.
In order to solve the problem, those skilled in the art also invented some be intended to can the syringe of autonomous operation to alleviate above-described doctors and patients' pressure, such as Chinese patent CN201320485587 discloses a kind of self-service intravenous injector, also has Chinese patent CN200820202109 to disclose another self-help type syringe.But all there is area for improvement in these two kinds of self-service syringes above-mentioned:
1, such as first the Chinese patent CN201320485587 mentioned discloses a kind of self-service intravenous injector, its complex structure and use inconvenient for be difficult to association's operation common patient and manufacturing cost is higher thus cannot penetration and promotion application;
2, second Chinese patent CN200820202109 mentioned discloses another self-help type syringe, this self-help type syringe is the same with the principle of traditional ordinary syringe, all that drug injection is entered in body by the mode extruded by push rod, but such injection system does not fully take into account the physiology mechanism of staff, usually the gesture needing employing two to clamp this device thumb press push rod in use well could hold injection direction thus being inject to centripetal end to injecting usual intravenous basic demand to distal end during oneself injectable drug, such injection is centrifugal closely dirty, blood circulation is fast, therapeutic effect can be played sooner, position except arm is difficult to adopt this posture to inject successfully simultaneously, thus there is the limitation on using.
3, the position that penetrates of these two patents and existing syringe needle and the degree of depth are all rely on the experience of user individual to judge whether to put in place above, and the user of the syringe of autonomous type may not be the personnel's thus very difficult degree of depth held entry needle and penetrate trained by professional medical, if operate miss likely damages self, thus this is also that the syringe of existing autonomous type is difficult to promote one of very important reason.
On the other hand, in Military Medical field, the ability that the battlefield medicine more and more paying attention to individual soldier now is independently saved oneself.In order to the specific demand of satisfied operation, then need a kind of can easy to carry, simple to operate, the self-service accurately syringe of injection, and still there is not a kind of self-help type syringe meeting above-mentioned condition at present.
Summary of the invention
The object of the invention is to: provide a kind of easy to carry, simple to operate, injection accurately, the self-service filling gun of one of human body multiple position injection can be competent at.
The present invention is achieved through the following technical solutions: a kind of self-service filling gun, is characterized in that: it comprise with roof quill housing, be arranged on the injection device in quill housing tube chamber and be arranged on the propulsion plant of quill housing both sides;
Described injection device comprises elastic component, entry needle, syringe, piston, remaining needle; Described entry needle is positioned at syringe, and the lower end of entry needle passes syringe lower end wall; The upper end of entry needle is connected with elastic component lower end, and piston is positioned at the inner chamber of syringe and is installed on entry needle lateral wall; Injector Bushing is located at the periphery that entry needle extends syringe part; The tube chamber that syringe is placed in quill housing is inner, and quill housing is extended in the lower end of entry needle and remaining needle, and elastic component upper end is connected on quill housing inner chamber roof inner surface;
Syringe lower end wall makes the syringe inner chamber be positioned at below piston form sealed chamber with between entry needle and between piston and the sidewall of syringe for sealing to contact; The sealing of described entry needle upper surface, the sidewall of entry needle is provided with through hole, and through hole is positioned at sealed chamber;
Described propulsion plant comprises force feed part and pushing piece, and one end of force feed part is hinged on the outer wall of quill housing, and the outer end of pushing piece is hinged on the inner surface of force feed part; The sidewall of described syringe be provided with in appearance can with the stopper slot of the inner phase clamping of pushing piece, the perforate that the outer end of pushing piece is provided with through quill housing sidewall and stopper slot clamping.
Technology comparatively, beneficial effect of the present invention is:
1, the mode that the present invention changes the push-press type that previously syringe adopts completely is injected, and the feature that make use of wrist after adopting the mode holding extruding to inject can realize independently injecting to centripetal end, simultaneously because injection needle inwardly more can facilitate the self observation of human eye therefore, it is possible to hold the position of injection accurately, such mode not only can be applied to arm simultaneously, and all well can complete injection operation for the position such as chest, leg;
2, the syringe that the present invention is different from the past is the mode be injected directly into by medicine in body, but remaining needle is delivered to corresponding injection site, common injector to inject then both can have been adopted also can to have an intravenous drip, selected various applied range;
3, present invention utilizes the differential pressure principle of air, until pressure difference ends entry needle meeting automatic rebounding during entry needle intravasation, even if the personnel not thus being through professional medical training also can complete injection and need not worry that operation not only makes entry needle puncture bundle and wears blood vessel.
Accompanying drawing explanation
Fig. 1 is embodiment 1 schematic cross-section;
Fig. 2 is A place partial enlarged drawing;
Fig. 3 is B place partial enlarged drawing;
Fig. 4 is embodiment 1 front view;
Fig. 5 is embodiment 1 left view;
Fig. 6 is the view that embodiment 1 renovates when opening;
Fig. 7 is embodiment 2 schematic cross-section
Fig. 8 is entry needle schematic diagram;
Fig. 9 is remaining needle;
Figure 10 is using state schematic diagram of the present invention.
Label declaration: 1-elastic component, 2-entry needle, 3-syringe, 4-piston, 5-remaining needle, 6-sealed chamber, 7-through hole, 8-force feed part, 9-pushing piece, 10-stopper slot, 11-base shell, 12-are renovated, 13-gag, 14-pipe fitting.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and the present invention elaborated:
The present invention includes with roof quill housing, be arranged on the injection device in quill housing tube chamber and be arranged on the propulsion plant of quill housing both sides;
Described injection device comprises elastic component 1, entry needle 2, syringe 3, piston 4, remaining needle 5; Described entry needle 2 is positioned at syringe 3, and the lower end of entry needle 2 passes syringe 3 lower end wall; The upper end of entry needle 2 is connected with elastic component 1 lower end, and piston 4 is positioned at the inner chamber of syringe 3 and is installed on entry needle 2 lateral wall; Remaining needle 5 is set in the periphery that entry needle 2 extends syringe 3 part; The tube chamber that syringe 3 is placed in quill housing is inner, and quill housing is extended in the lower end of entry needle 2 and remaining needle 5, and elastic component 1 upper end is connected on quill housing inner chamber roof inner surface;
Syringe 3 lower end wall makes syringe 3 inner chamber be positioned at below piston 4 form sealed chamber 6 with between entry needle 2 and between piston 4 with the sidewall of syringe 3 for sealing to contact; The sealing of described entry needle 2 upper surface, the sidewall of entry needle 2 is provided with through hole 7, and through hole 7 is positioned at sealed chamber 6;
Described propulsion plant comprises force feed part 8 and pushing piece 9, and one end of force feed part 8 is hinged on the outer wall of quill housing, and the outer end of pushing piece 9 is hinged on the inner surface of force feed part 8; The sidewall of described syringe 3 be provided with in appearance can with the stopper slot 10 of the inner phase clamping of pushing piece 9, the perforate that the outer end of pushing piece 9 is provided with through quill housing sidewall and stopper slot 10 clamping.
Here, in order to make entry needle 2 syringe needle can penetrate skin smoothly, thus entry needle 2 needs to extend remaining needle lower end.
Injection device is core component, is also simultaneously the parts of most vulnerable to pollution, thus usually adopts medical disposable material to be made in case major structure becomes cross infection.And quill housing and propulsion plant after sterilization can Reusabilities, after per injection, only injection device need be changed.
The scheme of two kinds of simple replacement injection devices is below provided.
Embodiment 1:
Further, described quill housing comprises base shell 11 and renovates 12; Elastic component 1 and quill housing roof are removablely be connected that make can by complete for injection device taking-up when renovating 12 and opening.
The quill housing of this scheme adopts the mode of turning over conjunction to complete the replacing of injection device, simple.
Embodiment 2:
Further, described quill housing comprises pipe fitting 14 and is arranged on the gag 13 of pipe fitting 14 upper opening; Injection device puts into pipe fitting 14 by opening, and elastic component 1 is fixedly arranged on gag 13 lower surface.
In this scheme, gag 13 also adopts disposable material to make, and just can be communicated with gag 13 like this take out replacing together when replacing injection device.Its principle and from rear end change pen core water-color paintbrush principle one to.This mode is more more simple and convenient than embodiment 1.
Further, the outer surface of described force feed part 8 is provided with anti-skidding lines or antiskid groove.
The frictional force of contact surface can being increased like this, hand slippage can better be prevented when grasping.
Work process of the present invention is as follows:
During use, first injection device is in place, holds with a hand the present invention afterwards and the syringe needle of entry needle 2 aimed at and inserts injection site; Slowly hold with a firm grip afterwards propulsion plant, the grip force of hand can change into the propulsive force of pushing piece, and so then to promote syringe 3 slowly downward for pushing piece, and drive entry needle 2 and remaining needle to go deep in body simultaneously; When the syringe needle of entry needle 2 penetrates into blood vessel, also remaining needle 5 is stayed Ink vessel transfusing completes all operations to entry needle 2 automatic rebounding.
Operation principle of the present invention is as follows:
In use, after entry needle 2 thrusts skin, owing to being complete sealing state in tissue, thus, sealed chamber 6 and outside air are isolated, and now sealed chamber 6 is sealing state; Syringe needle due to entry needle is positioned at subcutis or muscular tissue, therefore need not worry have air to enter in sealed chamber 6 from syringe needle, move down at the propelling movement effect bottom cylinder 3 of pushing piece afterwards, space now in sealed chamber 6 can be forced to expand, therefore the pressure of airtight chamber is a little less than atmospheric pressure, extraneous pressure energetically can apply a downward pressure to piston 4, to offset the restoring force of elastic component, reduce or stop the space in sealed chamber 6 to expand further, piston 4 drives entry needle 2 to advance in skin; When entry needle 2 penetrates blood vessel, blood rapidly can inject sealed chamber 6 along entry needle 2 internal reflux by through hole 7, the pressure differential between sealed chamber 6 and air can be eliminated gradually after blood flows to sealed chamber 6 li, therefore under the effect of elastic component 1, piston 4 is made again up to move, thus entry needle 2 follows piston back shrinkage, and is continued to stay Ink vessel transfusing by remaining needle.
Although the present invention adopts specific embodiment and alternative thereof illustrate to the present invention and illustrate, only to should be appreciated that otherwise the variations and modifications deviated from scope of the present invention all can be implemented.Therefore, except being to be understood that the restriction of claim except being enclosed and condition of equivalent thereof, the present invention is not by the restriction of going up in all senses.
Claims (4)
1. a self-service filling gun, is characterized in that: it comprise with roof quill housing, be arranged on the injection device in quill housing tube chamber and be arranged on the propulsion plant of quill housing both sides;
Described injection device comprises elastic component (1), entry needle (2), syringe (3), piston (4), remaining needle (5); Described entry needle (2) is positioned at syringe (3), and the lower end of entry needle (2) passes syringe (3) lower end wall; The upper end of entry needle (2) is connected with elastic component (1) lower end, and piston (4) is positioned at the inner chamber of syringe (3) and is installed on entry needle (2) lateral wall; Remaining needle (5) is set in the periphery that entry needle (2) extends syringe (3) part; The tube chamber that syringe (3) is placed in quill housing is inner, and quill housing is extended in the lower end of entry needle (2) and remaining needle (5), and elastic component (1) upper end is connected on quill housing inner chamber roof inner surface;
Syringe (3) inner chamber be positioned at below piston (4) is made to form sealed chamber (6) for sealing to contact between syringe (3) lower end wall with entry needle (2) and between piston (4) and the sidewall of syringe (3); Described entry needle (2) upper surface seals, and the sidewall of entry needle (2) is provided with through hole (7), and through hole (7) is positioned at sealed chamber (6);
Described propulsion plant comprises force feed part (8) and pushing piece (9), one end of force feed part (8) is hinged on the outer wall of quill housing, and the outer end of pushing piece (9) is hinged on the inner surface of force feed part (8); The sidewall of described syringe (3) be provided with in appearance can with the stopper slot (10) of the inner phase clamping of pushing piece (9), the perforate that the outer end of pushing piece (9) is provided with through quill housing sidewall and stopper slot (10) clamping.
2. self-service filling gun according to claim 1, is characterized in that: described quill housing comprises base shell (11) and renovates (12);
Elastic component (1) and quill housing roof are removablely be connected that make can by complete for injection device taking-up when renovating (12) and opening.
3. self-service filling gun according to claim 1, is characterized in that: described quill housing comprises pipe fitting (14) and is arranged on the gag (13) of pipe fitting (14) upper opening; Injection device puts into pipe fitting (14) by opening, and elastic component (1) is fixedly arranged on gag (13) lower surface.
4. the self-service filling gun according to Claims 2 or 3, is characterized in that: the outer surface of described force feed part (8) is provided with anti-skidding lines or antiskid groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594435.3A CN104288871B (en) | 2014-10-29 | 2014-10-29 | Self-service filling gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594435.3A CN104288871B (en) | 2014-10-29 | 2014-10-29 | Self-service filling gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104288871A true CN104288871A (en) | 2015-01-21 |
| CN104288871B CN104288871B (en) | 2016-08-24 |
Family
ID=52308971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410594435.3A Expired - Fee Related CN104288871B (en) | 2014-10-29 | 2014-10-29 | Self-service filling gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104288871B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330430A (en) * | 1993-12-06 | 1994-07-19 | Sullivan Robert J | Retractable syringe applicator |
| EP1946789A1 (en) * | 2001-04-19 | 2008-07-23 | Becton, Dickinson and Company | Safety shield system for prefilled syringes |
| CN201308680Y (en) * | 2008-10-16 | 2009-09-16 | 中山博泰药械有限公司 | Self-service syringe |
| CN103071203A (en) * | 2012-12-12 | 2013-05-01 | 山东新华安得医疗用品有限公司 | Anti-acupuncture intravenous detaining needle |
| CN203425323U (en) * | 2013-08-09 | 2014-02-12 | 陕西逸夫美疗科技有限公司 | Self-service intravenous injector |
| CN204170223U (en) * | 2014-10-29 | 2015-02-25 | 林新颖 | Self-service filling gun |
-
2014
- 2014-10-29 CN CN201410594435.3A patent/CN104288871B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330430A (en) * | 1993-12-06 | 1994-07-19 | Sullivan Robert J | Retractable syringe applicator |
| EP1946789A1 (en) * | 2001-04-19 | 2008-07-23 | Becton, Dickinson and Company | Safety shield system for prefilled syringes |
| CN201308680Y (en) * | 2008-10-16 | 2009-09-16 | 中山博泰药械有限公司 | Self-service syringe |
| CN103071203A (en) * | 2012-12-12 | 2013-05-01 | 山东新华安得医疗用品有限公司 | Anti-acupuncture intravenous detaining needle |
| CN203425323U (en) * | 2013-08-09 | 2014-02-12 | 陕西逸夫美疗科技有限公司 | Self-service intravenous injector |
| CN204170223U (en) * | 2014-10-29 | 2015-02-25 | 林新颖 | Self-service filling gun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104288871B (en) | 2016-08-24 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20171029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |