CN1103608C - Non-reusable safety syringe - Google Patents
Non-reusable safety syringe Download PDFInfo
- Publication number
- CN1103608C CN1103608C CN 94101555 CN94101555A CN1103608C CN 1103608 C CN1103608 C CN 1103608C CN 94101555 CN94101555 CN 94101555 CN 94101555 A CN94101555 A CN 94101555A CN 1103608 C CN1103608 C CN 1103608C
- Authority
- CN
- China
- Prior art keywords
- syringe
- protective casing
- tail end
- tongue piece
- needle stand
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A disposable safe syringe includes a protecting sleeve (12), which is mounted on the outboard of needle tube (1) and can slide along the needle tube longitudinally; thus the protecting sleeve (12) can move from the contracting location without working to safe location forward; the needle(4) reaches out of the protecting sleeve (12) on the contracting location without working; this protecting sleeve (12) has a fixing device (23,25) so as to be automatically kept on the safe location forward and not to contract opposite to the needle tube (1); and the needle seat (3) is kept in the location forward of the protecting sleeve (12) .
Description
Therefore the present invention relates to a kind of disposable syringe, this syringe is and as a kind of safety injector.
More precisely, the present invention relates to a kind of disposable safety injector, comprising:
A) syringe;
B) entry needle that is fixed on the needle stand, needle stand detachably are installed in the front end of syringe and/or on the front end;
C) piston, this piston can slide into the maximum on position that is used for the syringe discharge from being used for the dabbling maximum position of extracting out of syringe in syringe, and a hand lever that stretches out the syringe tail end is housed;
D) maintenance sleeve pipe, this protective casing is contained in the outside of syringe slidably, and make protective casing can move on to home forward from the contraction inoperative position, entry needle protrudes sleeve pipe on the inoperative position shrinking, protective casing extends around entry needle fully on home forward, thereby the whole entry needle that covers;
E) hook-type fixed teeth, this hook-type fixed teeth is positioned at the free tail end of flexibly deformable fixedly tongue piece, fixedly tongue piece is with respect to the protective casing longitudinal extension, be integral with sleeve-shaped, and the complementation on fixed teeth and the syringe tail end keeps the edge to match, so that with respect to syringe protective casing is fixed on its punctured position;
F) one discharges push piece, and this discharges the tail end that push piece is fixed on piston rod, and matches with fixed teeth so that make above-mentioned tooth break away from maintenance edge on the syringe tail end in the insertion end of travel of piston or basic end;
G) spring, this spring is inserted between syringe and the protective casing, and is used to make protective casing to move to its home forward from its contraction inoperative position;
H) two anti-detachment teeth, this anti-detachment tooth radially relatively is arranged in the tail end of syringe, and can flexibly radially outward be separated from each other, and can match with the back side that discharges push piece, and the bar of piston is fixed on the maximum on position in the piston stroke;
I) removable safety device, this device is positioned at the tail end of syringe, to prevent that discharging push piece matches with fixed teeth;
J) fixture; this fixture can either automatically remain on protective casing its home forward; make protective casing can not shrink with respect to syringe; can automatically keep needle stand again; make needle stand axially not pull down from the above-mentioned protective casing upper edge either direction that is in its home forward; this fixture comprises the internal boss of at least one protective casing; be used to make the afterbody location of needle stand; wherein internal boss matches with corresponding exterior boss on the needle stand; and at least one is used for the preceding tongue piece that keeps of elasticity of needle stand; the preceding tongue piece that keeps forms by the perisporium of cutting protective casing; and with respect to the sleeve pipe longitudinal extension; its tail end links to each other with protective casing, and its free tail end matches with the corresponding front boss of needle stand on the position that radially enters protective casing.
In known such syringe, one or more maintenance tongue pieces of protective casing are processed into their free end radially towards telescopic inboard inclination in manufacture process, and these tongue pieces flexibly bend towards the outside.This just needs the making maintainance set plumber skill of relative complex and high price, the increase that brings undesirable syringe cost simultaneously.
The disposible safety syringe that the purpose of this invention is to provide a kind of initial described type, this syringe has fairly simple and both economical design, and in operating aspect, is same reliable and safe with regard to protective casing especially.
The present invention achieves the above object by the disposible safety syringe of initial described type; one or more tab-cut are in keeping telescopic fore-end in said syringe; make these tongue pieces initial and the extension of the basic coplane of telescopic perisporium ground under the situation of pressurized not; when they and end cap interact; make the radially inside pressurized of one or more tongue pieces and be in an obliquity; their end reaches telescopic inboard simultaneously; wherein end cap has necking down; can suits and detachably are fixed to the end of protective casing in the preceding hole that is used for entry needle, entry needle.
According to a special simple embodiment, be arranged on the outside of one or more maintenance tongue pieces with the boss that the inner surface of end cap acts on mutually.Selectively, above-mentioned boss also can be arranged on the inner surface of end cap.
Because the result of above-mentioned layout, protective casing can be made of very simple and economical mode, for example makes by a kind of simple pressing mold or similar technology.
The present invention also has the feature described in accessory claim.
Feature of the present invention and the advantage of bringing therefrom will more be expressly understood by the following description to an embodiment shown in the drawings, wherein:
Fig. 1 is a decomposition diagram according to syringe embodiment of the present invention;
Fig. 2 is a longitudinal section according to the syringe of Fig. 1, and wherein protective casing is in its punctured position;
Fig. 3 is the sleeve portion of protective casing and the vertical profile exploded view of end cap that will be mounted thereto;
Fig. 4 and Fig. 5 are the longitudinal section of protective casing end on two mutually orthogonal planes that end cap is housed on it;
Fig. 6 is the view similar to Fig. 5, and wherein protective casing is in forward home with respect to the syringe of syringe, and needle stand is in the position of protective casing respective front ends.
In following description and accessory claim, " front end of syringe " is meant the end that entry needle is installed on the syringe, and the tail end of syringe is meant the end relative with entry needle.In addition, when being not specifically noted, the whole syringe element except entry needle are all preferably by appropriate plastic material or similar material manufacturing.
Referring to figs. 1 through the embodiment shown in 6, disposable safety injector comprises a syringe 1, this syringe 1 has a tapered front end 2, needle stand 3 is housed on the tapered front end 2, needle stand 3 keeps by utilizing the complementary bellmouth of processing in the needle stand tail end to be connected by friction, and the tail end of entry needle 4 is inserted above-mentioned hole securely.Usually, entry needle 4 is protected by pin cover 5, and pin cover 5 detachably combines with the front end of needle stand 3, makes pin cover 5 be against on the step 103 of above-mentioned end.Piston 6 is axially movable with fluid tight manner in syringe 1, and the termination 8 of hand lever 7 is inserted in the above-mentioned piston 6.The end section of bar 7 extends to the afterbody outside of syringe 1, and on the tail end of bar 7 button is housed.Bar 7 preferably has a kind of non-round transverse section, for example can be T shape or X-shaped.The end section of syringe 1 is strengthened, the feasible jar shape head 10 that forms a substantially cylindrical, and this jar shape head 10 has two along the relative radially enlarged of diametric(al).
The jar shape head 10 at syringe 1 tail end place has a sidewall 33, this sidewall 33 is radially and at the fixing afterbody free end of tongue piece 16 of outer side covers, this afterbody free end is formed with hook-shaped fixed teeth 17, is used for inserting a jar shape head 10 by the hole on jar shape head 10 tail ends 20.Therefore, each fixedly tongue piece 16 can both insert a jar shape head 10, and fixedly the corresponding hook-type fixed teeth 17 of tongue piece 16 can both engage with the end of above-mentioned head 10.Otch on the sidewall of jar shape head 10 provides anti-detachment tooth 21, and this anti-detachment tooth 21 is with respect to the 20 one-tenth 90 ° of layouts in two holes that are used for fixing tongue piece 16.Anti-detachment tooth 21 can flexibly radially outward be separated from each other, and has the relative inner that has spigot surface 22, and this spigot surface 22 is inwardly downward-sloping, and is used for matching with the corresponding inclination outer lateral edges of circular push piece 19.
The front portion of protective casing 12 has the cylindrical component 26 of a pipe end-cap hat.End cap has a preceding hole 28 of taper, and hole 28 just is slightly larger than the end section of entry needle cover 5.End cap 26, and for good and all is connected with sleeve pipe by claw on protective casing 12 from outer cover.Therefore, protective casing 12 has the fore-end that size has reduced, and end cap 26 is fixed on this part, and an annular, outer that makes end cap 26 be against on the protective casing 12 is shunk on the step 39.Protective casing 12 is by two outside boss 37 location that keep, and keeps boss 37 to be on protective casing 12 outsides, the radially relative position, and is stuck in two respective grooves 38 on the end cap 26 as claw.Above-mentioned end cap 26 has an inner annular step 27, and this step 27 is the interior tapered necking down among the embodiment, and shown in Fig. 4 to 6 was detailed, wherein end cap 26 was in its link position, and inner annular step 27 is on the front edge of protective casing 12.
Two radially relative maintenance tongue pieces 23 are in the said front part of protective casing 12, and process on protective casing 12 by the otch on the sleeve pipe 24.Each keeps tongue piece 23 with respect to protective casing 12 longitudinal extensions.As shown in figs. 1 and 3, initial, just do not have under the situation of end cap 26, keep tongue piece to be in the state of not stressing, and extend like this and make the basic coplane of sidewall of they and protective casing 12.Each keeps the front end of tongue piece 23 to link to each other with protective casing 12, is freely and keep the tail end of tongue piece.Keep tongue piece 23 flexibly radially to slope inwardly; make their free tail end be in such position; promptly by outer lug boss 123 on the tongue piece outside and the interaction of outer lug boss 123 and end cap 26 when being contained on the protective casing 12 when end cap 26, the free tail end that keeps tongue piece 23 is at the inside of protective casing 12 protrusion.Outer lug boss 123 is positioned at the fore-end with the maintenance tongue piece 23 that keeps sleeve pipe 12 to link to each other.As shown in Figure 2, be at protective casing 12 and shrink under idle state, this just can make tongue piece in the outer elastic leading thread of syringe 1 to bending.
This situation describes in detail in Fig. 3 to 6, and make protective casing 12 can enough very simple and economical modes, particularly make by the injection compression technology of using simple and cheap mould.
Shown in Fig. 2 and 6, keep the free tail end of tongue piece 23 to be designed to and to act on mutually with the outer periphery step 203 of needle stand 3.Protective casing 12 is having an inner boss 25 that keeps apart from the tail end a distance that keeps tongue piece 23 towards syringe, this boss 25 can be made a ring-shaped step, and its front end can be made up of many ribs (not illustrating) that are positioned at protective casing 12 inboards.Inner maintenance boss 25 is designed for circumferential annular part 303 effects with needle stand 3 tail end edges.Stably be fixed on needle stand 3 on syringe 1 front end 2 and protrude the circumferential surface of syringes 1, needle stand 3 tail ends have circumference edge portion, have just constituted an outside ring-shaped step 303 by this way, and it keeps boss 25 to act on the inside of protective casing 12.
Syringe is sold to the user with state shown in Figure 2, and in this state, piston 6 bounces back slightly from its maximum on position, and wherein syringe is thoroughly discharged medicinal liquid on maximum on position.Under this state of syringe, circular push piece 19 be in syringe 1 tail end place jar shape head 10 the outside a bit, prevent that by removable safety device circular push piece 19 from entering above-mentioned head simultaneously.
Be used for preventing at first that the removable safety device that circular push piece 19 enters the jar shape head 10 that is positioned at syringe 1 tail end from comprising a little cladding element 34, be generally the part of annulus, it has a centre bore 36, so that bar 3 can therefrom be passed.Replace said elements 34, a paper or a paperboard strip removable, that can tear also can be provided, do not illustrate among the figure.Little cladding element 34 is contained on the opening of jar shape head 10 tail ends, and is being furnished with two radially relative chisel teeths 35 towards the front of syringe front end for this purpose.The above-mentioned tooth 35 that extends from cladding element 34 is inserted in jar opening of shape head 10 tail ends, make above-mentioned tooth 35 be deep into two fixedly between the appropriate section of tongue piece 16 and head side wall 33, two fixedly the hook tooth 17 of tongue piece 16 engage with the end of above-mentioned jar of shape head 10.In this way, two teeth 35 are positioned at cladding element on the jar shape head 10 at syringe 1 tail end place, prevent that simultaneously fixedly the afterbody free end of tongue piece 16 is radially outward crooked, thereby prevent that it breaks away from above-mentioned jar of shape head 10.Cladding element 34 partly covers the opening of the jar shape head 10 at syringe 1 tail end place, and therefore prevents that circular push piece 19 from entering above-mentioned head 10.
Before syringe was used for injection, cladding element 34 must be pulled down.In order to pull down cladding element 34, the user of syringe must be caught above-mentioned cladding element 34 with his two fingers, two positions radially relative, that be preferably made profile of tooth on the cladding element periphery, so that in this way above-mentioned cladding element 34 is axially unloaded from the jar shape head 10 of syringe 1 tail end, then it is radially removed from the bar 7 of piston 6.
Protective casing is arranged in it and shrinks idle position, and on this position, fixedly tongue piece 16 is designed to enter by hole 20 the jar shape head 10 of syringe 1.Fixedly the hook-type fixed teeth 17 of tongue piece 16 therefore with the engaged at end of above-mentioned head 10, protective casing 12 is fixed on the syringe 1.When protective casing 12 was in it and shrinks idle position, spring 15 was in stress, compressive state just, and supporting or almost supporting the front of the jar shape head 10 of syringe 1 by the fin 13 that the periphery surface of protective casing 12 radially extends.In addition, when protective casing 12 was in it and shrinks idle position, the fore-end of the necking down of end cap 26 roughly reached the front end of needle stand 3, made that entry needle 4 exposes, and is in salient position when pin cover 5 is taken off forward.The internal diameter in hole 28 is slightly larger than the diameter of pin cover 5, just is slightly larger than the diameter of the complementary end portion of very close end cap 26 front ends.In the above-mentioned state according to the syringe of Fig. 2, piston 6 can freely be extracted out by its bar 7 of pumpback, makes syringe 1 suck injection in common mode by the entry needle 4 that does not have cover.The diameter in hole 28 makes and the front end of needle stand 3 from syringe 1 can not be taken out also less than the diameter of the outer periphery step 203 of needle stand 3, and when protective casing 12 is in it and shrinks idle position from the front end taking-up of protective casing 12.
In order to inject; need take off two fingers of 34 while of cladding element user and arrest syringe; each finger is placed on the front of the corresponding fin 13 that radially extends from protective casing 12 tail end periphery surfaces; mother by user points to the preceding piston 6 that promotes simultaneously, and this mother refers to be placed on the button 9 of piston rod 7.Insert the latter end of strokes at piston 6, circular push piece 19 enters into the jar shape head 10 of syringe 1 by the opening of jar shape head 10 tail ends, and the outer lateral edges of circular push piece 19 is against on the inclined guide surface 18 of fixing tongue piece 16.Therefore, fixedly tongue piece 16 is outwards flexibly separated mutually, makes their hook-type fixed teeth 17 be separated from the end of the jar shape head 10 of syringe 1.Therefore protective casing 12 throws off syringe 1, shrinks idle position but still be in it, and the effect of antagonistic spring 15 pressure is held it in a manner described up to the hands of user.In fixedly tongue piece 16 is outwards opened as mentioned above and/or before, the outer lateral edges of circular push piece 19 contacts with the inclined guide surface 22 of anti-detachment tooth 21, and slips over them.Therefore above-mentioned tooth flexibly separates, and makes them pass through a snap joint and engages with the top of circular push piece 19.Therefore; when injection; insert the terminal or approaching terminal of stroke at piston 6; push piece 19 is fixed in the jar shape head 10 of syringe 1, is between the end and anti-detachment tooth 21 of above-mentioned head 10; fixedly tongue piece 16 keeps it mutually away from state on this position, and therefore protective casing 12 throws off syringe 1.
After injection was finished, released from the peripheral radial fin 13 that protective casing 12 tail ends radially extend, the protective casing of consequently throwing off syringe 1 just now was by spring 15 or move forward to its forward home gradually or suddenly.As shown in Figure 6, on its anterior home, protective casing extends round entry needle 4, so that cover entry needle 4 fully.The inside of protective casing 12 keeps boss 25 can support the formed ring-shaped step 303 of peripheral part at needle stand 3 tail end edges simultaneously, and by end cap 26 and the outer lug boss 123 on it and the free tail end of the fixedly tongue piece 23 of radial skew in the protective casing 12 can support the outside ring-shaped step 203 of needle stand 3 simultaneously.Therefore, at its anterior home, protective casing just for good and all is fixed on the syringe 1 by needle stand 3 along direction of propulsion and pumpback direction along two longitudinal directions.When a people attempts protective casing 12 is taken off so that when reusing syringe from syringe 1 forward; the worst situation is that needle stand 3 is thrown off from the tapered front end of syringe 1; make protective casing 12 unload from syringe 1 with needle stand 3; wherein needle stand 3 is contained in the protective casing 12 non-disconnectablely, and therefore is retained in the above-mentioned protective casing 12 with entry needle 4.Protective casing 12 can be with a kind of simple mode and is made by a kind of plastic material cheaply, and this plastic material will have enough robustnesses and intensity, so that can not broken protective casing and do not damage and abandon useless needle stand 3 and entry needle 4.In addition, the end cap 26 on the protective casing 12 has a hole 28, and this hole 28 is very little, and extends a segment distance above the tip of entry needle 4, makes people's a finger can not contact entry needle 4 from the front end of syringe.
Some place that a bit locate, be preferably in contiguous circular push piece 19 of the bar 7 of piston 6 between the button 9 of circular push piece 19 and bar 7 tail ends can provide the weakening district 32 of a frangibility.Weaken the district if provide such one, then in a single day circular push piece 19 is stuck in the jar shape head 10 of syringe 1 by anti-detachment tooth 21, and when attempting to draw back piston 6 so that reusing syringe, the afterbody of bar 7 part will fracture.
Can make protective casing 12 slidably but can not be assemblied on the syringe 1 rotationally with the known method of expert of the art; an interior projection for example is set on protective casing 12; projection engages slidably with cannelure on syringe 1 outside in this, or projection and groove are set on the contrary.
Certainly, the present invention also can comprise the model that has same function, utilizes same invention thought.
Claims (10)
1. disposible safety syringe comprises:
A) syringe (1);
B) entry needle (4) that is fixed on the needle stand (3), wherein needle stand (3) detachably is contained in the front end of syringe (1) and/or on the front end;
C) piston (6), this piston (6) can slide into the maximum on position that is used for the syringe discharge from being used for the dabbling maximum position of extracting out of syringe in syringe (1), and a hand lever (7) is housed, and this bar (7) protrudes the tail end of syringe (1);
D) protective casing (12), this protective casing (12) is contained in the outside of syringe (1) slidably, and make protective casing can move on to a safety benefit forward from an idle position of contraction, shrinking on the inoperative position, entry needle (4) stretches out protective casing (12), on home forward, protective casing (12) extends round entry needle (4) fully, thereby covers it fully;
E) hook-type fixed teeth (17), this hook-type fixed teeth (17) is positioned at the free tail end of flexibly deformable fixedly tongue piece (16), fixedly tongue piece (16) is with respect to protective casing (12) longitudinal extension, form one with sleeve pipe (12), and the complementation on fixed teeth (17) and syringe (1) tail end keeps the edge to match, so that with respect to syringe (1) protective casing (12) is fixed on its punctured position;
F) one discharges push piece (19), and this push piece (19) is fixed on the tail end of the bar (7) of piston (6), and cooperates with fixed teeth (17) so that make maintenance edge on above-mentioned tooth disengaging syringe (1) tail end in the insertion end of travel of piston (6) or basic end;
G) spring (15), this spring (15) are inserted between syringe (1) and the protective casing (12), and are used to make protective casing to move to its home forward from its contraction inoperative position;
H) two anti-detachment teeth (21), this anti-detachment tooth (21) radially relatively is arranged in the tail end of syringe (1), and can flexibly radially outward be separated from each other, and can match with the back side that discharges push piece (19), the bar (7) of piston (6) is fixed on the maximum on position in piston (6) stroke;
I) removable safety device (34), this device (34) is positioned at the tail end of syringe (1), to prevent to discharge push piece (19) and fixed teeth (17) effect;
J) fixture, this fixture can either automatically remain on its home forward with protective casing (12), make protective casing (12) can not shrink with respect to syringe (1), can automatically keep needle stand (3) again, make needle stand (3) axially not pull down from above-mentioned protective casing (12) the upper edge either direction that is in its forward security position, this fixture comprises the internal boss (25) of at least one protective casing (12), be used to make the afterbody location of needle stand (3), wherein internal boss (25) acts on mutually with corresponding exterior boss (303) on the needle stand (3), and at least one is used for the preceding tongue piece (23) that keeps of elasticity of needle stand (3), the preceding tongue piece (23) that keeps forms by the perisporium of cutting protective casing (12), and with respect to the sleeve pipe longitudinal extension, its tail end links to each other with protective casing (12), and its free tail end on the position that radially enters protective casing (12) with the effect of the corresponding front boss (203) of needle stand (3), one of them keeps tongue piece or a plurality of maintenance tongue piece (23) to cut in the fore-end that keeps sleeve pipe (12), make and keep tongue piece (23) under the condition that does not stress, to extend with the basic coplane of the perisporium of protective casing ground, when they and end cap (26) interact, make radially inside pressurized of one or more tongue pieces (23), be in obliquity, their end reaches the inboard of sleeve pipe (12), wherein end cap (26) has necking down, can suits and detachably are fixed to the end of protective casing (12) in the preceding hole (28) that is used for entry needle (4), entry needle (4);
It is characterized in that: be arranged on the outside of one or more maintenance tongue pieces (23) with the outer lug boss (123) that the inner surface of end cap (26) acts on mutually, when being contained on the sleeve pipe (12), make the inboard radial skew of one or more maintenance tongue pieces (23) towards sleeve pipe (12) with convenient end cap (26).
2. according to the syringe of claim 1; it is characterized in that: keep the outer lug boss (123) of tongue piece (23) or the inner convex platform of end cap (26) all to be arranged on the position that coincides with the fore-end that keeps tongue piece (23), this fore-end makes tongue piece link to each other with protective casing (12).
3. according to the syringe of claim 2, it is characterized in that: two fixedly tongue pieces (16) radially relative and that have inclined guide surface (18) are provided, wherein inclined guide surface (18) mutually facing to and with discharge push piece (19) and act on mutually.
4. according to the syringe of claim 3; it is characterized in that: anti-detachment tooth (21) forms by the sidewall of cutting with syringe (1) tail end all-in-one-piece jar shape head (10); and extend from the fixedly tongue piece (16) that the tail end of protective casing (12) stretches out; make the free tail end that includes hook-type fixed teeth (17) and inclined guide surface (18) pass the above-mentioned jar of respective aperture (20) on shape head (10) end and insert above-mentioned jar of shape head (10); lock-in edge on syringe (1) tail end is made up of the edge in the above-mentioned hole that engages with said fixing tooth (17); jar shape head (10) is processed with an opening on its tail end, can enter above-mentioned head (10) so that make the dish type of bar (7) end section that is fixed to piston (6) discharge push piece (19).
5. according to the syringe of claim 4, it is characterized in that: removable safety device is made into the form of cladding element (34), this cladding element (34) is provided with a radial slot (36) so that the bar (7) of piston (6) can pass through it, and can by extension (35) be assembled to syringe (1) the jar shape head (10) the tail end opening on, wherein extension (35) inserts in the above-mentioned head (10), and be designed in such a way to interact with fixing tongue piece (16), to prevent that above-mentioned tongue piece is bent to its off-position, above-mentioned cladding element (34) is arranged between the tail end of push piece (19) and jar shape head (10).
6. according to the syringe of claim 5, it is characterized in that: removable safety device can be made up of paper removable, that tear or paperboard strip, is arranged between the tail end of push piece (19) and jar shape head (10).
7. according to the syringe of claim 6; it is characterized in that: shrink on the inoperative position at it; protective casing (12) is axially supporting on the stop device (10) that is positioned at syringe (1) tail end; and above-mentioned sleeve pipe is processed with at least two radially relative fins (13) at its tail end; this extends from telescopic circumferential surface fin (13), and is held by two fingers of the user of holding syringe during injecting.
8. according to the syringe of claim 7; it is characterized in that: shrink on the inoperative position at it; protective casing (12) is arranged to its front end (28) near the tail end that detachably is contained in the pin cover (5) of needle stand (3) front end; and the internal diameter of preceding hole (28) dwindles corresponding to the internal diameter of above-mentioned sleeve pipe other parts, and only is slightly larger than the external diameter of the complementary end section of pin cover (5).
9. syringe according to Claim 8, it is characterized in that: the preceding hole (28) that dwindles of protective casing (12) is formed by the preceding hole of end cap (26), and wherein end cap (26) for good and all is installed on the protective casing (12) by claw.
10. according to the syringe of claim 9; it is characterized in that: the outer steps (203) of needle stand (3) has the diameter greater than the hole (28) of protective casing (12) front end place, end cap (26); and form a stop device; preventing that above-mentioned needle stand (3) breaks away from syringe (1), and prevent that needle stand (3) is thrown off protective casing (12) on telescopic contraction inoperative position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITGE930006 IT231828Y1 (en) | 1993-02-26 | 1993-02-26 | DISPOSABLE SAFETY SYRINGE. |
| IT93U000006 | 1993-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092325A CN1092325A (en) | 1994-09-21 |
| CN1103608C true CN1103608C (en) | 2003-03-26 |
Family
ID=11354369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94101555 Expired - Fee Related CN1103608C (en) | 1993-02-26 | 1994-01-08 | Non-reusable safety syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1103608C (en) |
| IT (1) | IT231828Y1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR373001A0 (en) * | 2001-03-14 | 2001-04-12 | Glenord Pty Ltd | Improved non-reusable syringe |
| ATE529143T1 (en) * | 2001-09-24 | 2011-11-15 | Becton Dickinson Co | DISPOSABLE SYRINGE AND PISTON ROD LOCKING DEVICE THEREFOR |
| US7282042B2 (en) | 2003-04-18 | 2007-10-16 | Xiping Wang | Safety syringe |
| CN101099876B (en) * | 2007-08-15 | 2012-07-04 | 张亚根 | Active type safety syringe and safety injection needle |
| CN104548282B (en) * | 2015-01-12 | 2018-07-20 | 江苏磐宇科技有限公司 | A kind of assemble method of anti-needle thorn protective device |
| CN117180560B (en) * | 2023-08-25 | 2024-06-14 | 上海新耀湃科医疗科技股份有限公司 | Protective cover for prefilled syringe |
-
1993
- 1993-02-26 IT ITGE930006 patent/IT231828Y1/en active IP Right Grant
-
1994
- 1994-01-08 CN CN 94101555 patent/CN1103608C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT231828Y1 (en) | 1999-08-06 |
| ITGE930006U1 (en) | 1994-08-26 |
| ITGE930006V0 (en) | 1993-02-26 |
| CN1092325A (en) | 1994-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4309138B2 (en) | Improved single use syringe | |
| US4678461A (en) | Automatic injector with improved glass container protector | |
| JP4327396B2 (en) | Single use injection device | |
| US6752782B2 (en) | Automatically retractable safety syringe | |
| US20020156427A1 (en) | Needle protector assemblage, syringe equipped therewith and needle hub | |
| JP2001521793A (en) | Medical safety syringe | |
| CN1043083A (en) | Disposable syringe | |
| US20060036216A1 (en) | Safety device for a syringe | |
| CA2318594A1 (en) | Disposable safety syringe | |
| US20050096595A1 (en) | Glass safety syringe and relative safety kit for glass syringe | |
| CN1694740A (en) | Guaro mechanism attachable to standard syringe to transform it into a safety syringe | |
| CN1103608C (en) | Non-reusable safety syringe | |
| US5242419A (en) | No stick syringe | |
| US6953449B2 (en) | Hypodermic syringe having plunger pull-out stopping structure | |
| US20110160676A1 (en) | Medical Needle Assembly | |
| CN1518463A (en) | Safety shield system for prefilled syringes | |
| EP0581523B1 (en) | Syringe | |
| CN111888581A (en) | Safety syringe with needle protector | |
| US6994694B2 (en) | Apparatus for retaining concentric parts within one another | |
| CN111888580B (en) | Safety syringe | |
| CA2329780A1 (en) | Needle stick protection apparatus | |
| WO1995031236A1 (en) | A safety syringe | |
| EP1437151B1 (en) | Automatically retractable safety syringe | |
| US6409702B1 (en) | Plunger and needle holder of safety hypodermic syringe | |
| GB2306332A (en) | A hypodermic syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030326 |