CN1404884A - Safety syringe using flexible coupling-bar to automatically deviating syringe - Google Patents
Safety syringe using flexible coupling-bar to automatically deviating syringe Download PDFInfo
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- CN1404884A CN1404884A CN 01124201 CN01124201A CN1404884A CN 1404884 A CN1404884 A CN 1404884A CN 01124201 CN01124201 CN 01124201 CN 01124201 A CN01124201 A CN 01124201A CN 1404884 A CN1404884 A CN 1404884A
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- syringe
- bar
- needle
- flexible coupling
- piston
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Abstract
The present invention relates to a safety syringe which comprises a needle tube, and a declinating bar hole is provided eccentrically in the stem of the needle, the hollow needle shaft is connected in the front end of needle stem portion, and is communicated with the declinating bar, a flexible coupling bar is forward projected from centre of piston, and is aligned with direct-axis of the syringe. When it is used, and after the injection is completed, the flexible coupling bar can be properly bent and fastened into the declinating bar hole of the needle device and coupled with said needle device, the retracted piston and needle device are back-fed into the syringe, the flexible coupling bar axially and elastically is reset, and said needle device is declined, and can not be projected outward to puncture other person.
Description
Technical field
The invention relates to a kind of safety syringe-drum with flexible coupling-bar to automatically deviating.
Background technology
Traditional safety syringe-drum, general in the border that injection finishes, make the deflection pod of piston indent and the shape of needle set rear end such as the discount of arrow fasten, after the needle set that moves back piston and fastened of contracting enters syringe, the deflection pod of piston is the needle set that deflection fastens, so projection is not outwards hurted sb.'s feelings again, has the effect of security protection.Its major defect is:
Since on the needle set discount of shape such as arrow and the buckle of the deflection pod of piston only can do cutting back, the engaging of small size, in case the needle set after the coupling is shunk back after the syringe, the discount of needle set is very little, only do the coupling of small size with the deflection pod of piston, though needle set is deflection, but angle excursion is certain not to the utmost, and easily heavy curtain is moving, can't guarantee fully that needle set is multiple outstandingly to hinder other people again.
Summary of the invention
At above-mentioned defective, the inventor studies improvement, creates the safety syringe-drum with flexible coupling-bar to automatically deviating of the present invention.
The purpose of this invention is to provide a kind of safety syringe-drum, comprise a syringe with flexible coupling-bar to automatically deviating; One needle set contains a partial diagonal hole tiltedly to be located in the pin stem of needle set prejudicially; One hollow needle is connected to pin stem front end and this partial diagonal orifice flow bulk phase is logical; One piston mediad prolapse is established the longitudinal axis that a flexible coupling-bar is aimed at syringe.When injection finishes, this flexible coupling-bar is suitable scratches in the partial diagonal hole that is snapped into this needle set curvedly, with this needle set of coupling, contract and move back after this piston and needle set enter in the syringe, this flexible coupling-bar axial elasticity involution, but needle set so can't projection outwards stab other people, is reached purpose safe in utilization by deflection.
The object of the present invention is achieved like this: a kind of safety syringe-drum with flexible coupling-bar to automatically deviating, comprise needle cylinder device, needle set and piston apparatus, it is characterized in that: this needle set contains a partial diagonal hole tiltedly to be located in the pin stem of needle set prejudicially, and is connected to pin stem front end with a hollow needle and communicates with this partial diagonal hole; The mediad prolapse of this piston apparatus is established a flexible coupling-bar, it aims at the vertical axis of this syringe, this flexible coupling-bar is suitable scratches in the partial diagonal hole that is snapped into this needle set with this needle set of coupling curvedly, or contract and move back this piston and needle set enters in the syringe, should the involution of oar coupling bar axial elasticity, make the needle set deflection and can't projection outside.
This needle cylinder device comprises: for the syringe inside of splendid attire medicinal liquid; Needle guard portion is connected with the front end in this syringe; Shoulder is between this syringe and this needle guard portion; Rear flange is located at this syringe trailing edge; Prominent green ring is located on the trailing edge of this syringe inside adjacent to this rear flange.A needle guard hole is contained in this needle guard portion, and a concentric ring seat ring is located at this front portion, needle guard hole, and a ring groove annular is arranged with on this needle guard hole hole wall.This needle set comprises the hollow needle that contains a mesopore, affixed this hollow needle of this pin stem, one packing ring is located on this pin stem external diameter, be fastened on the ring groove in this needle guard portion, this partial diagonal hole tiltedly is located in this pin stem prejudicially, with the vertical axis of this syringe and this vertical axis coaxial needle set pin hole axle center be eccentric hand in an acute angle.This pin stem ring is established a concentric ring portion, the concentric ring seat of block in this needle guard portion.This piston apparatus comprises: a piston is connected with in the front end of a piston rod, and the flexible coupling-bar of an elastic construction is from this piston forward projection, and is connected with in this piston rod foremost, and this flexible coupling-bar is equipped with most bead rings on this coupling bar.It is curved that the piston rod front end of this piston apparatus is connected with the leading edge of a disk, is provided with at least one ratchet hook portion along the circumferential ring of this disk, the curved slide fastener of the leading edge of this annulus, the bead ring by this syringe trailing edge.This ratchet hook portion forms a plate-like ratchet hook portion.
Further specify below in conjunction with preferred embodiment and accompanying drawing.
Description of drawings
Fig. 1 is a decomposing schematic representation of the present invention.
Fig. 2 is the cross-sectional schematic after of the present invention being used in combination.
Fig. 3 is the cross-sectional schematic of automatic deflected condition of the present invention.
Fig. 4 is the combined structure sketch map of piston of the present invention and piston rod.
The specific embodiment
Consult Fig. 1-shown in Figure 4, safety syringe-drum of the present invention comprises a needle cylinder device 1, a needle set 2 and a piston apparatus 3.
This needle cylinder device 1 comprises: the inner 10 splendid attire injecting liquid drug liquid of tube of a syringe 11, one needle guard portion 12 is connected with in the front end of this syringe 11, one shoulder 13 is between syringe 11 and needle guard portion 12, one rear flange 14 is located at syringe 11 trailing edges, one bead ring 15 is located on inner 10 trailing edges of tube, adjacent this rear flange 14.
This needle guard portion 12 contains needle guard hole 121, one concentric ring seats 122 and is located on this 121 front portions, needle guard hole, and a ring groove 123 annulars are arranged with on the hole wall in this needle guard hole 121.
This needle set 2 comprises: a hollow needle 21 contains mesopore 20, one pin stem, 22 affixed these hollow needles 21 are in pin stem 22 front ends, one packing ring 23 is located on these pin stem 22 external diameters, to be fastened on the ring groove 123 in this needle guard portion 12, and one partial diagonal hole 24 tiltedly be located at prejudicially in this pin stem 22, with the vertical axis X of syringe 11 and this vertical axis X the pin hole axle center 200 of coaxial needle set 2 is eccentric hands over A in an acute angle, this partial diagonal hole 24 is fluid communication with the mesopore 20 of this hollow needle 21.
This pin stem 22 rings are established a concentric ring portion 221, with the concentric ring seat 122 of card shelves in this needle guard portion 12 in, make this needle set 2 be installed on syringe 11 front end needle guard portions 12 interior after, can not release forward by injected hydraulic pressure.
These partial diagonal hole 24 concentric rings are provided with most ratchet rings 241, but are advisable with a circle or two circle ratchet ring 241 usually.
This piston apparatus 3 comprises: a piston 31 is connected with in the front end of a piston rod 30; One flexible coupling-bar 32, from this piston 31 projection forward and is connected with in piston rod 30 foremost by flexual elastic material manufacturing; Be connected with orthogonally in piston rod 30 with a disk 33, with this piston 31 of holding, and by a buckle end 34 these pistons 31 of engaging.
This flexible coupling-bar 32 is equipped with majority (as two circles) bead ring 321 on coupling bar 32, when injection is finished, make this coupling bar 32 scratch and buckle in these pin stem 22 partial diagonal holes 24 curvedly, and the bead ring 321 that makes the coupling bar ratchet ring 341 in this partial diagonal hole 24 of buckle firmly, and move back in contracting after piston 31 is retracted in the syringe 11, draw the needle set 2 that moves back institute's coupling as Fig. 3 in the lump.
Move back owing to contract after piston and needle set enter in the syringe 11, the pliability elasticity automatic axial of flexible coupling-bar 32 mats self is just turned round, but the pin stem 22 of institute's coupling is because of its partial diagonal hole 24 identical coupling bars 32, make the centrally aligned longitudinal axis X in bar hole 24, hand over into deflection acute angle A and pin stem 22 and hollow needle 21 are former with eccentric rod hole 24, so hollow needle 21 is by deflection, as Fig. 3, and outwards projection and going out, unlikelyly stab other people, extrapolation or before when pushing away, hollow needle 21 can the card shelves in shoulder 13, and by bending, can projection not go out.
Because flexible coupling-bar 32 of the present invention has suitable length, and be snapped into to depth the partial diagonal hole 24 of pin stem 22, that also has suitable length, so can engage needle set 2 stably on the coupling bar 32 of piston apparatus, after in the syringe 11 of shrinking back, flexible coupling-bar 32 elasticity involutions, the needle set 2 of automatic deflection institute coupling, the deflection action really, can not move by heavy curtain, so can be really, deflection needle set 2 ideally, reach the security protection purpose of safety syringe-drum really, more creative than traditional safety syringe-drum.
The rear of the disk 33 that piston rod 30 front ends of this piston apparatus 3 are connected with; be set up in parallel a plate-like ratchet hook portion 35 or be provided with most ratchet hook portions 35 along the circumferential ring of disk 33; as Fig. 3; shown in 4; after piston rod 30 is packed syringe inside 10 into; but the curved slide fastener of the leading edge of disk 33; bead ring 15 by the syringe trailing edge; but when drawing when moving back piston rod 30; each ratchet hook portion 13 is that the card shelves are in bead ring 15; be not drawn out; so after injection finishes, guarantee that piston 31 couplings have the needle set of injecting 2 also can not pull out from syringe 11 rears, by being that needle set must not protract; retreating does not have door, guarantees that further the safety of safety syringe-drum of the present invention does not have anxiety.
The present invention is specially adapted to small-sized syringe, be 1.00cc as capacity, but the present invention does not limit its range of application.
All spirit of the present invention and categories do not disobeyed are done appropriate modification or change down, all belong within protection scope of the present invention.
Claims (8)
1, a kind of safety syringe-drum with flexible coupling-bar to automatically deviating, comprise needle cylinder device, needle set and piston apparatus, it is characterized in that: this needle set contains a partial diagonal hole tiltedly to be located in the pin stem of needle set prejudicially, and is connected to pin stem front end with a hollow needle and communicates with this partial diagonal hole; The mediad prolapse of this piston apparatus is established a flexible coupling-bar, it aims at the vertical axis of this syringe, this flexible coupling-bar is suitable scratches in the partial diagonal hole that is snapped into this needle set with this needle set of coupling curvedly, or contract and move back this piston and needle set enters in the syringe, should the involution of oar coupling bar axial elasticity, make the needle set deflection and can't projection outside.
2, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 1, it is characterized in that: this needle cylinder device comprises: for the syringe inside of splendid attire medicinal liquid; Needle guard portion is connected with the front end in this syringe; Shoulder is between this syringe and this needle guard portion; Rear flange is located at this syringe trailing edge; Prominent green ring is located on the trailing edge of this syringe inside adjacent to this rear flange.
3, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 2 is characterized in that: a needle guard hole is contained in this needle guard portion, and a concentric ring seat ring is located at this front portion, needle guard hole, and a ring groove annular is arranged with on this needle guard hole hole wall.
4, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 1, it is characterized in that: this needle set comprises the hollow needle that contains a mesopore, affixed this hollow needle of this pin stem, one packing ring is located on this pin stem external diameter, be fastened on the ring groove in this needle guard portion, this partial diagonal hole tiltedly is located in this pin stem prejudicially, with the vertical axis of this syringe and this vertical axis coaxial needle set pin hole axle center be eccentric hand in an acute angle.
5, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 2 is characterized in that: this pin stem ring is established a concentric ring portion, the concentric ring seat of block in this needle guard portion.
6, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 1, it is characterized in that: this piston apparatus comprises: a piston is connected with in the front end of a piston rod, the flexible coupling-bar of one elastic construction is from this piston forward projection, and be connected with in this piston rod foremost, this flexible coupling-bar is equipped with most bead rings on this coupling bar.
7, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 1, it is characterized in that: it is curved that the piston rod front end of this piston apparatus is connected with the leading edge of a disk, circumferential ring along this disk is provided with at least one ratchet hook portion, the curved slide fastener of the leading edge of this annulus, the bead ring by this syringe trailing edge.
8, the safety syringe-drum with flexible coupling-bar to automatically deviating according to claim 7 is characterized in that: this ratchet hook portion forms a plate-like ratchet hook portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01124201 CN1404884A (en) | 2001-08-13 | 2001-08-13 | Safety syringe using flexible coupling-bar to automatically deviating syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01124201 CN1404884A (en) | 2001-08-13 | 2001-08-13 | Safety syringe using flexible coupling-bar to automatically deviating syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1404884A true CN1404884A (en) | 2003-03-26 |
Family
ID=4665576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01124201 Pending CN1404884A (en) | 2001-08-13 | 2001-08-13 | Safety syringe using flexible coupling-bar to automatically deviating syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1404884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107106787A (en) * | 2014-11-28 | 2017-08-29 | 欧文蒙福德有限公司 | Retractable needles component |
| CN111372633A (en) * | 2017-07-25 | 2020-07-03 | 库瑞恩公司 | Needle assembly with needle safety shield |
-
2001
- 2001-08-13 CN CN 01124201 patent/CN1404884A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107106787A (en) * | 2014-11-28 | 2017-08-29 | 欧文蒙福德有限公司 | Retractable needles component |
| CN111372633A (en) * | 2017-07-25 | 2020-07-03 | 库瑞恩公司 | Needle assembly with needle safety shield |
| US11826527B2 (en) | 2017-07-25 | 2023-11-28 | Kurin, Inc. | Needle assembly with needle safety shield |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |