CN101239210A - Self-destroyed safety syringe - Google Patents
Self-destroyed safety syringe Download PDFInfo
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- CN101239210A CN101239210A CNA2008100269188A CN200810026918A CN101239210A CN 101239210 A CN101239210 A CN 101239210A CN A2008100269188 A CNA2008100269188 A CN A2008100269188A CN 200810026918 A CN200810026918 A CN 200810026918A CN 101239210 A CN101239210 A CN 101239210A
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- needle stand
- syringe
- pushing cylinder
- needle
- boss
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Abstract
The presnent invention provides an auto-disable safe syringe which includes syringe, push cylinder, neilsbed, needle head and auto-retraction device, release locking clamping mechanism. Said neilsbed is placed in the front end cavity of the syringe, a neilsbed locking device is placed on the junction part of said neilsbed and syringe, and it includes a leakage-proof locking ring on upper side of the neilsbed; said technical solution provided by the invention, especially, the technical solution that the neilsbed with the needle head is automatic retracted to cylinder body of the push cylinder by release locking clamping mechanism under the spring force of the auto-retraction device, can automatic retract the neilsbed and needle head and can close them in the push cylinder for preventing repeating use of the syringe. The auto-disable safe syringe has merits of novelty structure, neilsbed auto retracted after injection, short length of retracted syringe, convenient in use and process etc.
Description
Technical field:
The present invention relates to a kind of syringe, particularly relate to a kind of self-destroy safety injector.
Background technology:
Syringe is a most basic a kind of medical apparatus and instruments, in order to reduce the propagation of blood borne disease in patient, make laws one after another and force to promote the use of disposable syringe in the countries in the world that comprise China, but, common disposable syringe all exists and can reuse and not have safety device at present, defectives such as injection back needle tubing exposes, one side is subject to the lawless person or malicious retired scholar utilizes, this disposable only syringe is reused, very easily caused the propagation and the cross infection of virus; The injection back relevant personnel of needle body in collection and processing procedure are careless slightly on the other hand causes infection easily by needle sting, and particularly danger is bigger when handling paroxysmal infectious disease.For preventing the phenomenon that disposable syringe is purchased, peddled, secondary uses and avoid syringe needle in the collection and treatment process, to stab medical personnel that cause medical personnel and infect, self-destroy safety injector is all adopted at research promotion in countries in the world; Present known self-destroy safety injector, the movable needle stand and the clamping apparatus that are mainly one group of band syringe needle constitute, also have at movable needle stand spring is set, when injection finishes push rod is pushed into syringe foremost the time, push rod and needle stand clamping, when push rod once again when the pumpback, be about to needle stand together with needle retractable to syringe, with the syringe needle that prevents from the to give prominence to people of stabbing.This class self-destroy safety injector also has following defective: when having only push rod once again toward pumpback, syringe needle just can bounce back in the syringe, if medical personnel forget the pumpback push rod, still exists needle sting people's danger; In addition, during owing to the push rod pumpback, needle stand just can bounce back in the syringe together with syringe needle, and this has just increased the length of using the useless syringe in back, causes and disposes difficulty etc.Therefore, development and improve and not only can prevent to reuse but also can prevent that the safety injector that needle point is hurted sb.'s feelings from being the problem of constantly exploring in recent years.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, provide in a kind of pushing cylinder 2 and be provided with automatic retracting device, needle stand 3 can bounce back to the self-destroy safety injector of pushing cylinder 2 automatically together with syringe needle 4.
The object of the present invention is achieved like this: described self-destroy safety injector, and comprise syringe 1, pushing cylinder 2, needle stand 3 and place the syringe needle 4 of needle stand 3 bottoms, it is characterized in that:
1). described needle stand 3 is arranged in the cavity 5 of syringe 1 front end, and described needle stand 3 is provided with the needle stand lock uint with the junction of syringe 1, and it comprises the leakproof clamp ring 6 that is socketed in needle stand 3 tops;
2). the empty cylindrical shell that described pushing cylinder 2 has circular hole and needle stand 3 and syringe needle 4 can be placed in one for the bottom, pushing cylinder 2 bottoms are provided with the piston 7 that is slidingly matched with syringe inwall 1.1, be provided with automatic retracting device in the described pushing cylinder 2, described automatic retracting device comprises retraction spring 8, retraction bar 9 and be arranged on pushing cylinder 2 inwalls and retraction bar 9 tops between snap fastener;
3). be provided with between described retraction bar 9 bottoms and/or pushing cylinder 2 bottoms and needle stand 3 tops and take off the pintle hook lock structure of meeting sb. at the airport.
In described needle stand lock uint, have a through hole 13 that is communicated with syringe needle 4 in the middle of the described needle stand 3, needle stand 3 tops are provided with boss 12, the thin portion of boss 12 is and leakproof clamp ring 6 friction tight first platforms 14, first platform, 14 bottoms are second platform 15 with leakproof clamp ring 6 loose fits, promptly second platform, 15 diameters are less than first platform, 14 diameters, second platform, 15 bottoms are provided with spacing collar 26, the junction of described syringe 1 bottom and needle stand 3 is the cavity 5 that is complementary with needle stand 3 and syringe needle 4, described cavity 5 and needle stand 3 and syringe needle 4 loose fits, but under normal operating condition, when leakproof clamp ring 6 was socketed on first platform 14 of needle stand 3, described cavity was by leakproof clamp ring 6 and needle stand 3 tight fits.
In the described automatic retracting device, retraction bar 9 tops are provided with boss 16, have one groove in the middle of the boss 16, stud with elasticity guard ring 18 in the groove, the external diameter of elasticity guard ring 18 is greater than boss 16 external diameters, described pushing cylinder 2 inwalls are provided with the spacing collar 19 of evagination, the external diameter of the internal diameter of spacing collar 19 and elasticity guard ring 18 is interference fit, described spacing collar 19 and elasticity guard ring 18 constitute the snap fastener of automatic retracting devices, when automatic retracting device does not move, the limited circle of the retraction bar 9 of band elasticity guard ring 18 19 is spacing in pushing cylinder 2 bottoms, described retraction spring 8 is compressed and is socketed on the retraction bar 9, retraction spring A end 8.1 is connected with boss 16 bottom surfaces of retraction bar 9, and retraction spring B holds 8.2 to be connected with the inner bottom surface of pushing cylinder 2.
Be socketed with the second leakproof circle 20 between the inner bottom surface of described retraction spring B end 8.2 and pushing cylinder 2.
The described pintle hook lock that takes off is met sb. at the airport in the structure, described bayonet socket 10 is connected retraction bar 9 bottoms by two with the upper clipping claw symmetry, the grab 22 tapered structures of claw, its tapering is complementary with boss 12 outers that are arranged on needle stand 3 tops, the boss 12 external diameter interference fit of described bayonet socket 10 internal diameters and needle stand 3, when the bayonet socket 10 of retraction bar 9 engages with the boss outer 12.1 of needle stand 3, leakproof clamp ring 6 is backed down on the top 21.1 of claw makes the needle stand lock uint place releasing orientation, and the bar bottom surface 11 that bounces back simultaneously engages with the boss end face 12.2 of needle stand 3 and is connected.Snap fastener is applied a counteracting force makes the elasticity guard ring 18 of snap fastener be connected with spacing collar 19 disengagements, at this moment, automatic retracting device will bounce back in the cylindrical shell of pushing cylinder 2 with the needle stand 3 of syringe needle 4 automatically by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring 8.
In order to realize purpose of the present invention, the pintle hook lock structure of meeting sb. at the airport that takes off of the present invention also can adopt and comprises the push rod 28 that is arranged on band barb 27 in the middle of retraction bar 9 bottoms, be arranged on the jacking block 29 of pushing cylinder 2 bottoms, through hole 13 tops on the needle stand 3 are provided with the card chamber 30 that is complementary with push rod 28, the card point 31 in card chamber 30 is interference fit with the barb 27 of push rod 28, when push rod 28 and 30 clampings of card chamber, jacking block 29 backs down leakproof clamp ring 6 simultaneously and snap fastener is applied a counteracting force and makes snap fastener throw off connection, at this moment, automatic retracting device will bounce back in the cylindrical shell of pushing cylinder 2 with the needle stand 3 of syringe needle 4 by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring 8.
In order to realize purpose of the present invention, self-destroy safety injector of the present invention, its syringe 1 front end is provided with the needle guard 23 that can remove; Syringe 1 end is provided with handle 24; Pushing cylinder 2 tops are provided with top plug 25.
The invention has the beneficial effects as follows: owing to use technical solutions according to the invention, particularly adopt under the spring force effect of automatic retracting device, to bounce back to technical scheme in the cylindrical shell of pushing cylinder 2 with the needle stand 3 of syringe needle 4 automatically by taking off the pintle hook lock structure of meeting sb. at the airport, can be effectively needle stand 3 and syringe needle 4 are bounced back automatically and be closed in the pushing cylinder 2, prevent the repeated use of syringe, has novel structure, syringe needle 4 can bounce back automatically after injection finished, retraction back injector length is short, uses and dispose beneficial effects such as convenient.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the needle stand and the structural representation of needle retractable in pushing cylinder of the embodiment of the invention 1;
Fig. 3 is the embodiment of the invention 1 local structural representation that amplifies;
Fig. 4 is the structural representation enlarged drawing of the embodiment of the invention 1 needle stand;
Fig. 5 a is the structural representation enlarged drawing of the embodiment of the invention 1 retraction bar;
Fig. 5 b is the enlarged drawing of overlooking of Fig. 5 a;
Fig. 6 is the structural representation of the embodiment of the invention 1 pushing cylinder.
Fig. 7 is the structural representation of the embodiment of the invention 2;
Fig. 8 is the needle stand and the structural representation of needle retractable in pushing cylinder of the embodiment of the invention 2;
Fig. 9 is the embodiment of the invention 2 local structural representations that amplify;
Figure 10 is the structural representation enlarged drawing of the embodiment of the invention 2 needle stands;
Figure 11 a is the structural representation enlarged drawing of the embodiment of the invention 2 retraction bars;
Figure 11 b is the enlarged drawing of overlooking of Figure 11 a;
Figure 12 is the structural representation of the embodiment of the invention 2 pushing cylinders.
Among the figure: 1, syringe; 1.1, the syringe inwall; 2, pushing cylinder; 3, needle stand; 4, syringe needle; 5, cavity; 6, leakproof clamp ring; 7, piston; 8, retraction spring; 8.1, retraction spring A end; 8.2, retraction spring B end; 9, retraction bar; 10, bayonet socket; 11, retraction bar bottom surface; 12, boss; 12.1, the boss outer; 12.2, the boss end face; 13, through hole; 14, first platform; 15, second platform; 16, boss; 17, groove; 18, elasticity guard ring; 19, spacing collar; 20, the second leakproof circle; 21, claw; 21.1, the top; 22, grab; 23, needle guard; 24, handle; 25, top plug; 26, spacing collar; 27, barb; 28, push rod; 29, jacking block; 30, card chamber; 31, card point;
The specific embodiment:
Embodiment 1: referring to figs. 1 through Fig. 6, in embodiments of the present invention, as shown in Figure 1 and Figure 2, described self-destroy safety injector, comprise syringe 1, pushing cylinder 2, needle stand 3 and place the syringe needle 4 of needle stand 3 bottoms, described needle stand 3 is arranged in the cavity 5 of syringe 1 front end, and described needle stand 3 is provided with the needle stand lock uint with the junction of syringe 1, and it comprises the leakproof clamp ring 6 that is socketed in needle stand 3 tops; As Fig. 3, shown in Figure 6, the hollow cylinder that described pushing cylinder 2 has circular hole and needle stand (3) and syringe needle (4) can be placed in one for the bottom, pushing cylinder 2 bottoms are provided with the piston 7 that is slidingly matched with syringe inwall 1.1, be provided with automatic retracting device in the described pushing cylinder 2, described automatic retracting device comprises retraction spring 8, retraction bar 9 and be arranged on pushing cylinder 2 inwalls and retraction bar 9 tops between snap fastener; Be provided with between described retraction bar 9 bottoms and needle stand 3 tops and take off the pintle hook lock structure of meeting sb. at the airport, the described pintle hook lock structure of meeting sb. at the airport that takes off comprises bayonet socket 10 and the retraction bar bottom surface 11 that is arranged on retraction bar 9 bottoms and is arranged on the boss 12 that needle stand 3 tops and the bayonet socket 10 and the bar bottom surface 11 that bounces back are complementary; When pushing cylinder 2 is pushed into bayonet socket 10 when engaging with boss 12, under the effect of thrust, bayonet socket 10 pressurizeds strut and then with 12.1 clampings of boss outer and back down leakproof clamp ring 6 and make the needle stand lock uint place releasing orientation, the bar bottom surface 11 that bounces back simultaneously engages to be connected and to apply a counteracting force by boss end face 12.2 with the boss end face 12.2 of needle stand 3 and makes snap fastener throw off connection, as shown in Figure 2, at this moment, the retraction spring 8 of automatic retracting device discharges elastic force, will bounce back to automatically in the cylindrical shell of pushing cylinder 2 with the needle stand 3 of syringe needle 4 by taking off the pintle hook lock structure of meeting sb. at the airport.
Some as technical solution of the present invention, in the embodiment of the invention 1, when bayonet socket 10 engages with boss outer 12.1, the critical thrust of leakproof clamp ring 6 is backed down on the top 21.1 that claw 21 is run into critical thrust that boss outer 12.1 strutted and claw 21 or its make a concerted effort (promptly under thrust claw 21 by the top 21.1 of claw 21 when strutting both make a concerted effort when backing down leakproof clamp ring 6 again) should be less than making snap fastener throw off the counteracting force that connects, otherwise can cause bayonet socket 10 not engage fully and/or the top 21.1 of claw 21 when not backing down leakproof clamp ring 6 with boss outer 12.1, snap fastener is thrown off earlier and is connected, cause the misoperation of automatic retracting device, needle stand 3 can not be bounced back in the cylindrical shell of pushing cylinder 2.
As Fig. 1, Fig. 3 and shown in Figure 4, in described needle stand lock uint, have a through hole 13 that is communicated with syringe needle 4 in the middle of the described needle stand 3, needle stand 3 tops are provided with boss 12, the thin portion of boss 12 is and leakproof clamp ring 6 friction tight first platforms 14, first platform, 14 bottoms are second platform 15 with leakproof clamp ring 6 loose fits, promptly second platform, 15 diameters are less than first platform, 14 diameters, second platform, 15 bottoms are provided with spacing collar 19, the junction of described syringe 1 bottom and needle stand 3 is the cavity 5 that is complementary with needle stand 3 and syringe needle 4, described cavity 5 and needle stand 3 and syringe needle 4 loose fits, but under normal operating condition, when leakproof clamp ring 6 was socketed on first platform 14 of needle stand 3, described cavity 5 was by leakproof clamp ring 6 and needle stand 3 tight fits.
As Fig. 1, Fig. 3, shown in Fig. 5 a and Fig. 5 b, in the described automatic retracting device, retraction bar 9 tops are provided with boss 16, have one groove 17 in the middle of the boss 16, stud with elasticity guard ring 18 in the groove 17, the external diameter of elasticity guard ring 18 is greater than boss 16 external diameters, described pushing cylinder 2 inwalls are provided with the spacing collar 19 of evagination, the external diameter of the internal diameter of spacing collar 19 and elasticity guard ring 18 is interference fit, described spacing collar 19 and elasticity guard ring 18 constitute the snap fastener of automatic retracting devices, when automatic retracting device does not move, the limited circle of the retraction bar 9 of band elasticity guard ring 18 19 is spacing in pushing cylinder 2 bottoms, described retraction spring 8 is compressed and is socketed on the retraction bar 9, and retraction spring A end 8.1 is connected with boss 16 bottom surfaces of retraction bar 9, and retraction spring B holds 8.2 to be connected with the inner bottom surface of pushing cylinder 2.
As shown in Figure 3, be socketed with the second leakproof circle 20 between the inner bottom surface of described retraction spring B end 8.2 and pushing cylinder 2.
Shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 a and Fig. 5 b, the described pintle hook lock that takes off is met sb. at the airport in the structure, described bayonet socket 10 is connected retraction bar 9 bottoms by four claw 21 symmetries, the grab 22 tapered structures of claw 21, its tapering is complementary with the boss outer 12 that is arranged on needle stand 3 tops, described bayonet socket 10 internal diameters and boss 12 external diameter interference fit, when bayonet socket 10 engages with boss outer 12.1, leakproof clamp ring 6 is backed down on the top 21.1 of claw 21 makes the needle stand lock uint place releasing orientation, and the bar bottom surface 11 that bounces back simultaneously engages with the boss end face 12.2 of needle stand 3 and is connected.Snap fastener is applied a counteracting force snap fastener throw off to be connected, at this moment, automatic retracting device will bounce back to the needle stand 3 of syringe needle 4 in the cylindrical shell of pushing cylinder 2 automatically by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring 8; Fig. 6 is the structural representation of the embodiment of the invention 1 pushing cylinder.
In order to realize purpose of the present invention, in the embodiment of the invention 1, as shown in Figure 1, and described self-destroy safety injector, its syringe 1 front end is provided with the needle guard 23 that can remove; Syringe 1 end is provided with handle 24; Pushing cylinder 2 tops are provided with top plug 25.
The use and the operation principle of the embodiment of the invention 1 are as follows:
When 1. using, the needle guard of removing 23, syringe needle 4 inserts medicinal liquid, again pushing cylinder 2 is pulled back injection is drawn onto in the syringe, be injectable, at this moment, the needle stand lock uint is in locked state, be that leakproof clamp ring 6 is socketed on first platform 14 of needle stand 3, the cavity 5 of syringe front end is by leakproof clamp ring 6 and needle stand 3 tight fits.When 2. pushing cylinder 2 promotes pistons 7 and advances to injection and will annotate, bayonet socket 10 engages with boss 12 outers, leakproof clamp ring 6 is backed down on the top 21.1 of claw makes the needle stand lock uint place releasing orientation, the bar bottom surface 11 that bounces back simultaneously engages with boss 12 end faces and is connected, snap fastener is applied a counteracting force makes snap fastener elasticity guard ring 18 be connected with spacing collar 19 disengagements, at this moment, automatic retracting device will bounce back in the cylindrical shell of pushing cylinder 2 with the needle stand 3 of syringe needle 4 automatically by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring 8.3. the internal diameter of spring is loose fit simultaneously with retraction bar 9 external diameters and pushing cylinder 2, and spring can not be subjected to other resistance when discharging elastic force jack-up retraction bar 9 like this.4. the second leakproof circle 20 is a tight fit with retraction bar 9, to play anti-leakage effect, guarantees also that simultaneously needing with the counteracting force that bigger thrust produces snap fastener to be thrown off connects.5. because top plug 25 envelopes tightly at pushing cylinder 2 tops, can guarantee that needle stand 3 and syringe needle 4 are closed in the pushing cylinder 2, prevent to reuse, play the purpose of disposable use and safety self-destruct.
Embodiment 2: with reference to Fig. 7 to Figure 12, in the embodiment of the invention 2, extremely shown in Figure 12 as Fig. 7, the described pintle hook lock structure of meeting sb. at the airport that takes off adopts and to comprise that being arranged in the middle of retraction bar 9 bottoms push rod 28 of band barb 27 is arranged on pushing cylinder 2 bottoms and takes off when pintle hook lock is met sb. at the airport the structure clamping and can back down the jacking block 29 of leakproof clamp ring 6, through hole 13 tops on the needle stand 3 are provided with the card chamber 30 that is complementary with push rod 28, the card point 31 in card chamber 30 is interference fit with the barb 27 of push rod 28, when push rod 28 and 30 clampings of card chamber, jacking block 29 backs down leakproof clamp ring 6 simultaneously and snap fastener is applied a counteracting force and makes snap fastener throw off connection, at this moment, as shown in Figure 8, automatic retracting device will bounce back to the needle stand 3 of syringe needle 4 in the cylindrical shell of pushing cylinder 2 by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring 8; Figure 12 is the structural representation of the embodiment of the invention 2 pushing cylinders; The embodiment of the invention 2 all the other conditions and effect are with embodiment 1.
The present invention includes but be not limited to the described embodiment of the foregoing description, also can design other embodiments in conjunction with concrete applicable cases according to technical solutions according to the invention.
Claims (9)
1. self-destroy safety injector comprises syringe (1), pushing cylinder (2), needle stand (3) and places the syringe needle (4) of needle stand (3) bottom, it is characterized in that:
1). described needle stand (3) is arranged in the cavity (5) of syringe (1) front end, and described needle stand (3) is provided with the needle stand lock uint with the junction of syringe (1), and it comprises the leakproof clamp ring (6) that is socketed in needle stand (3) top;
2). the cylindrical shell that described pushing cylinder (2) has circular hole and needle stand (3) and syringe needle (4) can be placed in one for the bottom, pushing cylinder (2) bottom is provided with the piston (7) that is slidingly matched with syringe inwall (1.1), be provided with automatic retracting device in the cylindrical shell of described pushing cylinder (2), described automatic retracting device comprises retraction spring (8), retraction bar (9) and be arranged on pushing cylinder (2) inwall and the snap fastener between bar (9) top of bouncing back;
3). be provided with between described retraction bar (9) bottom and/or pushing cylinder (2) bottom and needle stand (3) top and take off the pintle hook lock structure of meeting sb. at the airport.
2. self-destroy safety injector according to claim 1, it is characterized in that: in described needle stand lock uint, have a through hole (13) that is communicated with syringe needle (4) in the middle of the described needle stand (3), needle stand (3) top is provided with boss (12), the thin portion of boss (12) is and friction tight first platform of leakproof clamp ring (6) (14), first platform (14) bottom is second platform (15) with leakproof clamp ring (6) loose fit, promptly second platform (15) diameter is less than first platform (14) diameter, second platform (15) bottom is provided with spacing collar (26), the junction of described syringe (1) bottom and needle stand (3) is the cavity (5) that is complementary with needle stand (3) and syringe needle (4), described cavity (5) and needle stand (3) and syringe needle (4) loose fit, but under normal operating condition, when first platform (14) that leakproof clamp ring (6) is socketed on needle stand (3) was gone up, described cavity (5) was by leakproof clamp ring (6) and needle stand (3) tight fit.
3. self-destroy safety injector according to claim 1, it is characterized in that: in the described automatic retracting device, retraction bar (9) top is provided with boss (16), have one groove (17) in the middle of the boss (16), stud with elasticity guard ring (18) in the groove (17), the external diameter of elasticity guard ring (18) is greater than boss (16) external diameter, described pushing cylinder (2) inwall is provided with the spacing collar (19) of evagination, the external diameter of the internal diameter of spacing collar (19) and elasticity guard ring (18) is interference fit, described spacing collar (19) and elasticity guard ring (18) constitute the snap fastener of automatic retracting device, when automatic retracting device does not move, the limited circle of retraction bar (9) (19) of band elasticity guard ring (18) is spacing in pushing cylinder (2) bottom, described retraction spring (8) is compressed and is socketed on the retraction bar (9), retraction spring A end (8.1) is connected with boss (16) bottom surface of retraction bar (9), and retraction spring B end (8.2) is connected with the inner bottom surface of pushing cylinder (2).
4. self-destroy safety injector according to claim 3 is characterized in that: be socketed with the second leakproof circle (20) between the inner bottom surface of described retraction spring B end (8.2) and pushing cylinder (2).
5. self-destroy safety injector according to claim 1, it is characterized in that: the described pintle hook lock that takes off is met sb. at the airport in the structure, described bayonet socket (10) is connected retraction bar (9) bottom by two with upper clipping claw (21) symmetry, the tapered structure of grab (22) of claw (21), its tapering is complementary with the boss (12) that is arranged on needle stand (3) top, described bayonet socket (10) internal diameter and boss (12) external diameter interference fit, when bayonet socket (10) and boss outer (12.1) when engaging, leakproof clamp ring (6) is backed down on the top (21.1) of claw (21) makes the needle stand lock uint place releasing orientation, the bar bottom surface (11) that bounces back simultaneously engages with the boss end face (12.2) of needle stand (3) and is connected, snap fastener is applied a counteracting force makes snap fastener throw off connection, at this moment, automatic retracting device will bounce back in the cylindrical shell of pushing cylinder (2) with the needle stand (3) of syringe needle (4) automatically by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring (8).
6. self-destroy safety injector according to claim 1 and 2, it is characterized in that: described take off pintle hook lock meet sb. at the airport structure comprise be arranged on the retraction bar (9) bottom in the middle of the band barb (27) push rod (28), be arranged on the jacking block (29) of pushing cylinder (2) bottom, through hole (13) top on the needle stand (3) is provided with the card chamber (30) that is complementary with push rod (28), the card point (31) in card chamber (30) is interference fit with the barb (27) of push rod (28), when push rod (28) and the clamping of card chamber (30), jacking block (29) backs down leakproof clamp ring (6) simultaneously and snap fastener is applied a counteracting force and makes snap fastener throw off connection, at this moment, automatic retracting device will bounce back in the cylindrical shell of pushing cylinder (2) with the needle stand (3) of syringe needle (4) by taking off the pintle hook lock structure of meeting sb. at the airport under the effect of retraction spring (8).
7. self-destroy safety injector according to claim 1 is characterized in that: described syringe (1) front end is provided with the needle guard (23) that can remove.
8. self-destroy safety injector according to claim 1 is characterized in that: described syringe (1) end is provided with handle (24).
9. self-destroy safety injector according to claim 1 is characterized in that: described pushing cylinder (2) top is provided with top plug (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100269188A CN101239210A (en) | 2008-03-21 | 2008-03-21 | Self-destroyed safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100269188A CN101239210A (en) | 2008-03-21 | 2008-03-21 | Self-destroyed safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101239210A true CN101239210A (en) | 2008-08-13 |
Family
ID=39931211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100269188A Pending CN101239210A (en) | 2008-03-21 | 2008-03-21 | Self-destroyed safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101239210A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012122748A1 (en) * | 2011-03-12 | 2012-09-20 | 徐昊华 | Disposable automatic retracting safety syringe with replaceable syringe needles |
| CN104027874A (en) * | 2014-06-19 | 2014-09-10 | 杨育和 | Retractable type safe injection syringe with changeable needle |
| CN108014397A (en) * | 2017-12-07 | 2018-05-11 | 汕头华尔怡医疗器械有限公司 | Syringe |
-
2008
- 2008-03-21 CN CNA2008100269188A patent/CN101239210A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012122748A1 (en) * | 2011-03-12 | 2012-09-20 | 徐昊华 | Disposable automatic retracting safety syringe with replaceable syringe needles |
| CN104027874A (en) * | 2014-06-19 | 2014-09-10 | 杨育和 | Retractable type safe injection syringe with changeable needle |
| WO2015192485A1 (en) * | 2014-06-19 | 2015-12-23 | 杨育和 | Retractable safe syringe with changeable needle |
| CN108014397A (en) * | 2017-12-07 | 2018-05-11 | 汕头华尔怡医疗器械有限公司 | Syringe |
| WO2019109814A1 (en) * | 2017-12-07 | 2019-06-13 | 杨德怡 | Syringe |
| CN108014397B (en) * | 2017-12-07 | 2019-08-30 | 杨德怡 | Syringe |
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