CN100536942C - Single use safety syringe - Google Patents
Single use safety syringe Download PDFInfo
- Publication number
- CN100536942C CN100536942C CNB028178823A CN02817882A CN100536942C CN 100536942 C CN100536942 C CN 100536942C CN B028178823 A CNB028178823 A CN B028178823A CN 02817882 A CN02817882 A CN 02817882A CN 100536942 C CN100536942 C CN 100536942C
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- CN
- China
- Prior art keywords
- pillar
- guider
- piston
- syringe
- slidably
- 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
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A safety device for a syringe needle which includes a guide and a slidable member having a first portion that is configured to be slid along the guide and a second portion having a formation for a needle, that facilitates the shielding of the sharp point within said formation. A non-reusable syringe, which includes a plunger having a first part with one or more followers and a second part housing a guide.
Description
Technical field
The invention belongs to the safety injector field, refer in particular to prevent entry needle that stab with permanent not re-usable syringe.
Background technology
Along with the danger of aids infection virus and other bloodborne diseasess increase day by day, need a kind of reliable, easy-to-use and safety injector that cost is low in order to reduce medical personnel and patient's infection.There are many schemes to be suggested in this area.But these schemes expose some shortcomings usually, with the hands operate and/or the manufacturing cost height such as the needs medical personnel.Owing to medical care cost reason, the third world countries of many poverties reuse does not have adequately disinfected disposable medical instrument usually.At these national high incidences, this present situation is unacceptable according to acquired immune deficiency syndrome (AIDS) and relevant disease.Patient's education degree is not ideal usually, and these unfamiliar patients are more prone to accept the equipment that is repeated to use.The existing device that not re-usable syringe is provided is relatively more expensive, some syringe even insisted on making by the user can reusable syringe.
Summary of the invention
The invention provides a kind of safety device that is used for the injector to inject pin, it comprises: one is contained in guider on the syringe cylinder or Unitarily molded with syringe cylinder; An assembly slidably, this assembly first is designed to slide along guider, and second portion has a configuration that is used for entry needle, helps needle point is covered in this configuration.
This guider has near-end and far-end.Near-end be defined as one prevent assembly first slidably from near-end break away from the terminal block of guider, sloping portion can connect assembly first slidably, and chamfered edge part before assembly is slidably pushed to and connected needle point, be used for the interim location of first.The far-end of guider is the serration of a marshalling, and it engages the slidably complementary portion of assembly first in use, thus will be slidably assembly be fixed on uncollectible position and syringe needle is enclosed second portion.
Slidably assembly first is made of a carriage and a bar.Bracket design becomes the rake of overlap joint (snap-click) at guider.Slidably the assembly second portion can be cup-shaped or the medicated cap columnar structure that is used for entry needle, or for being used for the eccentric orfice of entry needle, it has the enclosure portion that is used to cover syringe needle.Slidably assembly first can be out of shape with resiliencely and for example depart from it is departed from syringe cylinder, so be pushed to syringe needle before calotte slips over the syringe needle end at assembly slidably, because for the hole of entry needle setting or structure depart from needle point, needle point with regard to crested in calotte.
The inventor thinks, the safety syringe only needs a hands handle needle point safely, so the medical personnel can be used to the another hands to attend to the patient, thereby this hands can be away from needle point.
Another aspect of the present invention has provided a kind of device and has made the not reproducible use of syringe and this device be made up of a piston, and there are one or more followers in piston first, and second portion is installed in a guider and is used for accepting or guiding follower.Sealing-plug can be added in piston end with or the piston second portion constitute an independent assembly.Itself can be made up of the piston second portion two parts: first is installed in guider, and second portion is as a device that connects sealing-plug.
Guider can also can be Z-type or M-type by forming (V-type) with at least two pillars in summit.
M-type guider can comprise first pillar, second pillar, the 3rd pillar and the 4th pillar, and the 3rd summit on first summit between first pillar and second pillar, on second summit between second pillar and the 3rd pillar, between the 3rd pillar and the 4th pillar.
On first summit, second summit and the 3rd summit place, be provided with a kind of device to guarantee the half-duplex channel of follower at guider.This device can be to have the notch cuttype inclined-plane to prevent to enter once more the compressible molded projection of last pillar.When piston when injector head advances, first pillar of M-type guider will be accepted follower.Location when first pillar can be used for the syringe withdrawn fluid, or air in certain amount injected another bottle.Before syringe uses, preferably follower is contained in the guider and with piston and inserts in the syringe cylinder opening.In case follower advances along first pillar, first summit of M-type guider is set to be beneficial to pushes second pillar to.
When piston when injector to inject pin end is return, second pillar of M-type guider will be guided follower.This action is corresponding with the fluids such as medicine, body fluid of packing into to syringe.
Second summit is set to be beneficial to the 3rd pillar of pushing M-type guider to.When piston when pushing syringe end to, the 3rd pillar of M-type guider will be accepted follower.This action with to patient injection medicine or blood or fluid sample injection proper container is corresponding.When attempt to reuse syringe or with piston when syringe cylinder disassembles, the 3rd summit helps pushing to the 4th pillar of M-type guider.When piston when the injector to inject needle end part is return, the 4th pillar of M-type guider will be accepted follower.The 4th pillar links to each other with the outer surface of piston second portion, thereby allows follower to skid off M-type guider, and piston first is separated from second portion, and the piston second portion is stayed the entry needle end of syringe as a result.Pin can be a ready-made part of syringe.
Z-type guider can comprise that first pillar, second pillar the 3rd pillar reaches on second summit of first summit between first pillar and second pillar between second pillar and the 3rd pillar.In this case, syringe just can use when piston inserts syringe fully.Adopted a kind of device to guarantee the half-duplex channel of follower on first summit and second summit.This device can be to have the notch cuttype inclined-plane to prevent to enter once more the compressible molded projection of last pillar.When piston when the injector to inject needle end part is return, first pillar of Z-type guider will be accepted follower.First summit is set to be beneficial to second pillar of pushing Z-type guider to.When piston when injector head advances, second pillar of Z-type guider will be accepted follower.When arriving second summit, will help pushing to the 3rd pillar of Z-type guider.When piston when the injector to inject needle end part is return, the 3rd pillar of Z-type guider will be accepted follower, at this moment the outside of the 3rd pillar and piston joins, allow follower skid off Z-type guider like this, piston first is separated from second portion, and the piston second portion is stayed the injection tube head as a result.Entry needle and injection tube can prefabricatedly be fixed together.
V-type guider can comprise first pillar and second pillar and a summit between first pillar and second pillar.A device is positioned on this summit with the half-duplex channel of guaranteeing follower.This device can be to have the notch cuttype inclined-plane to prevent to enter once more the compressible molded projection of last pillar.When piston when injector head advances, first pillar of V-type guider will be accepted follower.When arriving the summit, follower will help being pushed to second pillar of V-type guider.When piston when the injector to inject needle end part is return, second pillar of V-type guider will be accepted follower.The outside of second pillar and piston joins, and follower skids off V-type guider, and piston first is separated from second portion, and the piston second portion is stayed the entry needle end as a result.The injection tube that has V-type guider can be to install medicine in advance, and its entry needle and injection tube can be together prefabricated.
Description of drawings
Now in conjunction with the accompanying drawings, the present invention is described in more detail by the non-limiting example mode, in the accompanying drawing:
Fig. 1 is this safety device and syringe figure;
Fig. 2 is the guider enlarged drawing;
Fig. 3 and Fig. 4 are slidably assembly enlarged drawings of safety device;
Fig. 5 and Fig. 6 are the enlarged drawings that is used for the configuration of entry needle;
Fig. 7 [a] and Fig. 7 [b] are the application drawings of safety injector;
Fig. 8 is not reproducible use syringe piston figure;
Fig. 9 is the guider enlarged drawing;
Figure 10 is the projection figure in the summit;
Figure 11 [a] and Figure 11 [b] are the application drawings of syringe;
Figure 12 is the not reproducible use syringe figure that connects.
Concrete embodiment
Shown in Fig. 1 to 7, the safety device 10 of entry needle 12 comprises: guider 14 on syringe cylinder 16 that is contained in syringe 18 or Unitarily molded with syringe cylinder 16; An assembly 20 slidably, this assembly first 22 is designed to slide along guider 14, and second portion 24 has a configuration 26 that is used for entry needle, helps needle point 13 is covered in this configuration 26.
Slidably assembly 20 firsts 22 are made of a carriage 23 and a bar 25.Carriage 23 is designed to the rake 30 of overlap joint (snap-click) at guider 14.
Slidably assembly 20 second portions 24 can be cup-shaped 38 or medicated cap shape 40 configurations 26 that are used for syringe needle 13.Configuration 26 has an eccentric orfice 42 that is used for syringe needle 13, and enclosure portion 44 is used to cover syringe needle 13.Entry needle 12 passes the hole 42 of configuration 26, thereby makes when slidably the pillar 23 of assembly 20 is placed in chamfered edge part 32 configuration 26 remain on the root of entry needle 15.Slidably assembly 20 firsts 22 can be out of shape with resiliencely and depart from the syringe cylinder 16 of syringe 18, slip over syringe needle 13 ends so be pushed to entry needle 12 up to calotte 40 at assembly 20 slidably, because the hole 42 or the configuration 26 that are provided with for entry needle 12 depart from needle point 13, needle point is with regard to crested (referring to Fig. 7 [a] and [b]) in calotte 40.
The slidably assembly of this safety injector makes only needs a hands just can handle needle point safely, so the medical personnel can be used to the another hands to attend to the patient, thereby this hands can be away from needle point.
Another aspect of the present invention, shown in Fig. 8 to 11, not re-usable syringe 50 has a piston 52, and there are one or more followers 56 in piston first 54, and this follower is the papillae form on the elastic sheet 57; Second portion 58 is installed in a guider 60, and this guider 60 is used to be installed in or guides follower 56.Sealing-plug 62 can be attached to piston 52 ends or constitute an independent assembly with piston 52 second portions 58.Piston 52 second portions 58 can be made up of two parts itself: first 64 is installed in guider 60, and second portion 66 is as a device that connects sealing-plug 62.
M-type guider 68 can comprise first pillar 70, second pillar 72, the 3rd pillar 74 and the 4th pillar 76, and the 3rd summit 82 on first summit 78 between first pillar 70 and second pillar 72, on second summit 80 between second pillar 74 and the 3rd pillar 76, between the 3rd pillar 74 and the 4th pillar 76.At first summit 78, second summit 80 and 82 places, the 3rd summit, be provided with a kind of device 84 to guarantee the half-duplex channel of follower at guider.This device can be to have the notch cuttype inclined-plane to prevent to enter once more the compressible molded projection 86 of last pillar.When piston 52 when syringe 50 heads advance, first pillar 70 of M-type guider will be accepted follower 56.Location when first pillar 70 can be used for syringe 50 withdrawn fluid, or air in certain amount injected another bottle.Before syringe uses, preferably follower 56 is contained in the guider 60 and and inserts in the syringe cylinder opening 53 piston 52.In case follower 56 advances along first pillar 70, first summit 78 of M-type guider 68 is set to be beneficial to pushes second pillar 72 to.
When piston 52 when return syringe 50 ends 51, second pillar 72 of M-type guider 68 will be guided follower 56.This action is corresponding with the fluids such as medicine, body fluid of packing into to syringe.
Pin can be a ready-made part of syringe.
Reference number
10 safety devices
12 pins
13 needle points
14 guiders
15 entry needle roots
16 syringe cylinders
18 syringes
20 assemblies slidably
22 firsts of assembly slidably
23 carriages
24 second portions of assembly slidably
25 bars
26 configurations
28 terminal block
30 sloping portions
32 chamfered edge parts
34 serrations
36 serrations on the assembly slidably
38 glasss of type configurations
40 shape for hat configurations
42 eccentric orfices
44 enclosure portion
50 not reproducible use injection tubes
The entry needle end of 51 injection tubes
52 pistons
53 syringe cylinder openings
54 piston firsts
56 followers
The flexible thin slice of 57 band mamelons
58 piston second portions
60 guiders
62 sealing-plugs
First section of 64 piston second portions
Second section of 66 piston second portions
68 M-type guiders
70 first pillars
72 second pillars
74 the 3rd pillars
76 the 4th pillars
78 first summits
80 second summits
82 the 3rd summits
84 way flow devices
86 projections
88 junction points
Claims (10)
1. single use safety syringe that comprises the safety device that is used for syringe needle, it comprises:
A guider;
An assembly slidably, this assembly first is arranged on the guider slidably and is positioned at the precalculated position of relative guider, and this part is made of a carriage and the bar that can be out of shape and depart from injection tube with resiliencely; And
Be attached to the second portion on the bar that departs from injection tube, this part has a configuration that is used for the entry needle needle point, and the part of this configuration helps needle point is covered within it when bar departs from injection tube;
Wherein said guider has near-end and far-end, wherein said near-end by prevent assembly slidably from near-end break away from guider terminal block, be used to hold the sloping portion of assembly first slidably and help and partly limiting with the chamfered edge of locating before needle point engages slidably partly temporarily.
2. single use safety syringe as claimed in claim 1, wherein said configuration are in order to cover the calotte of needle point.
3. single use safety syringe as claimed in claim 2, wherein slidably the assembly second portion is made of an eccentric orfice and an enclosure portion in the described calotte, when assembly slidably advances and bar when departing from injection tube along guider, this enclosure portion will be pressed close to needle point.
4. single use safety syringe as claimed in claim 2, wherein when assembly slidably when guider advances, the bar that can be out of shape in its first will make the hole on the configuration depart from needle point with resiliencely, thereby its enclosure portion will cover on the injection needle point.
5. single use safety syringe as claimed in claim 1, the far-end of wherein said guider is partly limited by the serration in the far-end marshalling, described serration engages with the appropriate section of assembly first slidably in use, thereby slidably assembly is locked in a uncollectible position.
6. single use safety syringe as claimed in claim 5, wherein slidably the carriage of assembly has complementary zigzag inward flange, with the serration from the far-end locking guider and prevent the slidably withdrawal of assembly from near-end in use.
7. single use safety syringe as claimed in claim 1, it comprises:
A piston, there are one or more followers in described piston first;
Described piston second portion has been installed with a M-type guider, thereby the follower in the first is directed on pre-routing, and described guider comprises:
First pillar, second pillar, the 3rd pillar, the 4th pillar, have on first summit between first pillar and second pillar, the 3rd summit on second summit between second pillar and the 3rd pillar and between the 3rd pillar and the 4th pillar, comprise a device, be used to facilitate the half-duplex channel of the follower that is positioned at first summit, second summit and the 3rd summit; When piston when injector head advances so that in syringe air row to atmosphere or row to fluidic bottle is housed or with syringe in pre-packed medicine row during to another container, first pillar of M-type guider will be accepted follower; First summit of M-type guider is set to be beneficial to second pillar of pushing M-type guider to; Return when being used for syringe dress liquid from injector to inject pin end when piston, second pillar of M-type guider will be accepted follower; Second summit of M-type guider is set to be beneficial to the 3rd pillar of pushing M-type guider to; When piston when injector to inject pin end advances, the 3rd pillar of M-type guider will be accepted follower; The 3rd summit is set to be beneficial to the 4th pillar of pushing M-type guider to; When piston when injector to inject pin end is return, the 4th pillar of M-type guider will be accepted follower; And wherein thereby the outer surface of the 4th pillar of M-type guider and piston joins and allows follower to skid off M-type guider, and piston first is separated from second portion, and the piston second portion is stayed the entry needle end as a result.
8. single use safety syringe as claimed in claim 7, wherein this syringe comprises the sealing-plug that invests piston end.
9. single use safety syringe as claimed in claim 8, wherein the second portion of its piston is made up of two parts: first is installed in guider, and second portion is suitable for connecting sealing-plug.
10. single use safety syringe as claimed in claim 7, wherein said to facilitate the device of half-duplex channel be the compressible molded projection that has the notch cuttype inclined-plane, enters last pillar once more to prevent follower.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA2001/7538 | 2001-09-13 | ||
| ZA200107538 | 2001-09-13 | ||
| ZA2001/8031 | 2001-10-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1694737A CN1694737A (en) | 2005-11-09 |
| CN100536942C true CN100536942C (en) | 2009-09-09 |
Family
ID=35353389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028178823A Expired - Fee Related CN100536942C (en) | 2001-09-13 | 2002-09-13 | Single use safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100536942C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030344B (en) * | 2015-07-21 | 2017-06-20 | 苏州百利医疗用品有限公司 | A kind of safety shield for medical needles |
-
2002
- 2002-09-13 CN CNB028178823A patent/CN100536942C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1694737A (en) | 2005-11-09 |
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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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20100913 |