CN202569095U - Disposable syringe and push rod for same - Google Patents
Disposable syringe and push rod for same Download PDFInfo
- Publication number
- CN202569095U CN202569095U CN 201220271488 CN201220271488U CN202569095U CN 202569095 U CN202569095 U CN 202569095U CN 201220271488 CN201220271488 CN 201220271488 CN 201220271488 U CN201220271488 U CN 201220271488U CN 202569095 U CN202569095 U CN 202569095U
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- China
- Prior art keywords
- push rod
- platform
- axis
- disposable syringe
- far
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- Expired - Fee Related
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Abstract
The utility model provides a disposable syringe and a push rod for the same. The push rod comprises a near end, a far end and an axis passing through the near end and the far end, wherein a clamping mechanism and a stop platform arranged near the clamping mechanism are formed at the far end of the push rod; and the stop platform comprises a main body part formed around the axis of the push rod and a plurality of fingerlike parts extending from the main body part along the direction deviating from the axis of the push rod. According to the disposable syringe and the push rod, when injection is completed, the stroke needed for mutual clamping of the far end of the push rod and a needle bed can be obtained by continuously applying smaller pushing force to the push rod and the pains of the patients are alleviated at the same time.
Description
Technical field
This utility model relates to a kind of disposable syringe and the push rod that is used for disposable syringe.
Background technology
Reuse problems such as causing cross infection for fear of syringe, in medical practice, use disposable syringe widely.A kind of typical disposable syringe comprise overcoat, can its external sleeve in reciprocating push rod and the plug that contacts with outer casing inner wall.The far-end of push rod is formed with the needle stand that is installed in the overcoat far-end can intermeshing snap fastener.On push rod, also be formed with the retaining platform of the nearside that is positioned at snap fastener, plug is installed between the snap fastener and retaining platform of push rod.The retaining platform is a kind of round table-like structure, compares with plug, is approximately rigidity.In injection process, retaining platform pushing plug makes plug that medicinal liquid is released syringe.Promptly inject when finishing when plug is pulled to zero line, plug is braked.At this moment, continue the pushing push rod, the retaining platform will be oppressed the plug distortion, make push rod can continue distad to advance, thereby make push rod front end and pin base fastener lump together.Then, proximad pulling push rod draws in the inside of overcoat through snap fastener with needle stand, accomplishes the self-destruction of syringe, prevents that syringe is used again
Yet in this disposable syringe of prior art, the push rod far-end continues to advance and mesh required stroke with needle stand in order when injection finishes, to obtain, and need apply bigger power to push rod and make the enough distortion of plug generation.The misery that this causes syringe to use effort and can increase the patient.
The utility model content
In order to address the above problem, this utility model provides a kind of disposable syringe on the one hand, and it comprises overcoat, push rod and plug.Said overcoat comprises the inside of near-end, far-end and hollow, and said inside is by the inner wall limit of tubular.Said push rod be positioned at said overcoat inside and can be said relatively the overcoat motion, said push rod comprises the outside near-end of the near-end that is positioned at said overcoat, be positioned at said overcoat inside far-end and through the near-end of said push rod and the axis of remote extension.The far-end of said push rod is formed with the retaining platform.Said plug is installed on the said push rod, is positioned at the distally of said retaining platform, can contact with the inwall liquid sealing of said overcoat.Wherein, the pushing part that said retaining platform comprises the main part that forms round the axis of said push rod and said plug is extended, is used to push to the direction along the axis that deviates from said push rod from said main part.Wherein, said pushing part is constructed to, and when said plug is stopped at the far-end of said overcoat, only is that said pushing part is out of shape owing to continuing the said plug of pushing.
On the other hand, this utility model provides a kind of push rod that is used for disposable syringe, comprises the axis of near-end, far-end and said near-end of process and remote extension.The far-end of said push rod is formed with the retaining platform.Wherein, said retaining platform comprises main part that forms round the axis of said push rod and the pushing part that the direction along the axis that deviates from said push rod is extended from said main part.
According to this utility model, the retaining platform comprises intermediary main part and from the outward extending pushing part of main part.The pushing part has formed cantilever design, and cantilever design is easily deformable.Therefore,, can when the pushing part continues the pushing plug, have only the distortion of pushing part, engage required stroke each other with needle stand, also alleviate patient's misery simultaneously and obtain the push rod far-end so that plug is after injection finishes to be braked through conventional design.
Description of drawings
Fig. 1 is the cross-sectional schematic of the disposable syringe of a kind of embodiment of this utility model, and wherein, syringe is the state in the injection process.
Fig. 2 is the state of syringe shown in Figure 1 when injection finishes.
Fig. 3 is the front view of the push rod that is used for disposable syringe of a kind of embodiment of this utility model.
Fig. 4 is the enlarged diagram of the distally part of push rod shown in Figure 3.
Fig. 5 is along the cutaway view of A-A intercepting among Fig. 4.
Fig. 6 is along the cutaway view of B-B intercepting among Fig. 4.
The specific embodiment
The specific embodiment is with reference to the accompanying drawings described the disposable syringe and the push rod that is used for disposable syringe of this utility model.It should be appreciated by those skilled in the art that shown in the accompanying drawing only exemplaryly, its objective is explanation this utility model, rather than restriction this utility model.
Employed direction term " far " and " closely " are with respect to for the medical personnel such as nurse of patient infusion in specifically describing hereinafter, correspond respectively to drawing in Fig. 1～3 " on " and D score.
Fig. 1 and Fig. 2 show the disposable syringe that is in the injection process and injects a kind of embodiment of this utility model of two states when finishing respectively.As shown in the figure, the disposable syringe of this utility model comprises overcoat 1, needle stand 2, push rod 3 and plug 4.Overcoat 1 comprises the inside 7 of near-end 5, far-end 6 and hollow.The inside 7 of hollow is that the inwall 8 tubular limits.Plug 4 is installed on the push rod 3, and contacts with inwall 8, is used to realize injecting the liquid sealing of needs and discharge medicinal liquid.Needle stand 2 is positioned at the far-end of overcoat 1 and comprises snap fastener (first snap fastener) 9.
Referring to Fig. 1 and 2, more particularly, plug 4 is installed in the far-end 10 of push rod 3, between second snap fastener 14 and retaining platform 13 of push rod.When push rod 3 distal motion, retaining platform 13 pushing plugs 4 make inside 7 the faller gill through needle stand 2 on of medicinal liquid from overcoat 1 to be gone out plug 4 distal motion thereupon; After plug 4 was braked when injection finishes, retaining platform 13 continued pushing plugs 4, produced the required stroke of push rod 3 engagement needle stands 2.
Referring to Fig. 4,5 and 6, at the push rod that is used for disposable syringe 3 of this utility model, retaining platform 13 is preferably processed with elastomeric material.Retaining platform 13 comprises round the main part 15 of axis 12 formation of push rod and the pushing part 16 that the direction along the axis that deviates from push rod 12 is extended from main part 15.So the pushing part 16 that extends out from main part 15 has formed cantilever design.In the disposable syringe of this utility model, the pushing part 16 of cantilever design is used to push plug 4.
In illustrated specific embodiment, pushing part 16 is made up of a plurality of finger portion.Those skilled in the art are through conventional design, and the for example selection of the selection of material chosen, profile, cross sectional shape can easily make pushing part 16 have predetermined rigidity.In injection process, frictional force and medicinal liquid resistance sum between the inwall 8 of plug 4 and overcoat 1 are very little, so pushing part 16 is when promoting plug 4 distal motion, pushing part 16 self-deformations are very little or indeformable basically.When injection finishes; Plug 4 is stopped at far-end 6 places (being zero line) of overcoat 1; Active force and counteracting force that pushing part 16 continuation pushing plugs 4 are produced will increase, and at this moment, only be that pushing part 16 is out of shape under the retroaction of plug 4; Promptly have only 16 distortion of pushing part, and plug 4 does not deform.The distortion of pushing part 16 provides the front end 11 of push rod 3 to continue distal motion and has made second snap fastener 14 of push rod 3 and the needed stroke of first snap fastener, 9 engagements of needle stand 2.Pushing part 16 is compared with plug 4, more easy deformation.Therefore, with the contrast that needs bigger power to make plug 4 distortion in the prior art, this utility model only needs littler power just can accomplish push rod 3 for making the required stroke of snap fastener engagement, has alleviated patient's misery.In the embodiment shown in Fig. 5 and 6, a plurality of finger portion of pushing part 16 are with respect to the plane through axis 12, and for example plane 17 and 18 is symmetrically distributed, and promptly arranges in the face of claiming.Be appreciated that a plurality of finger portion also can be symmetrically distributed with respect to axis 12, promptly axial symmetry is arranged.Main part 15 among the figure is roughly rectangle; Being positioned at up and down, four finger portion of both sides are of similar shape; Two finger portion that are positioned at the left and right sides are of similar shape, but the length of the finger portion of the finger portion of both sides and the left and right sides is different with width up and down.Be appreciated that main part 15 can be an Any shape.A plurality of finger portion can be identical, also can be different; Can be symmetrically distributed, also can asymmetricly distribute.In the embodiment show in figure 4, retaining platform 13 is the lamellar of cardinal principle perpendicular to said axis on the whole, and perhaps, a plurality of finger portion at least wherein are the lamellar of cardinal principle perpendicular to said axis.
Should be understood that pushing part 16 also can be any other shape outside the finger-like, as long as for example circular, polygon are its distortion that can satisfy the demand.
In order to limit the deformation extent of pushing part 16, excessive for the deflection that prevents to push part 16 in other words, can restriction platform 20 be set at the nearside of the retaining platform 13 of push rod 3.In an object lesson shown in Fig. 3 and 4,, be formed with the platform (for example round platform) 19 that has ratchet at the nearside that keeps off platform 13 at the far-end of push rod 3.Restriction platform 20 is for being formed with the corresponding boss of shape and finger portion 16 on the platform 19.
In the push rod of the further preferred implementation that does not illustrate, the part that the next-door neighbour of push rod 3 keeps off platform 13 nearsides is can crooked flexible part.In this utility model, there is not other structure between two parts of the meaning of " next-door neighbour ".Referring to Fig. 3 and 4, in a concrete embodiment, flexible part 21 is between retaining platform 13 and round platform 19.Flexible part 21 can have littler diameter or thickness forms through comparing with other parts of push rod 3, perhaps, anyly can be produced diastrophic structure and forms by well known by persons skilled in the art.
At whole push rod all is under the inflexible situation, and in when injection, if thrust and push rod axis do not overlap, so, push rod maybe deflection, and then makes plug deflection, cause the water shutoff line afunction between plug and the outer casing inner wall, cause leakage; And in the inside that push rod is assembled to overcoat the time, if the relative syringe axis deflection of push rod axis, so, plug possibly be difficult to put in the overcoat.The existence of flexible part can address the above problem, thereby helps using and assembling of syringe.
Specifically described the embodiment of this utility model above with reference to accompanying drawing.It should be appreciated by those skilled in the art that accompanying drawing and corresponding the description just to the purpose of explaining this utility model thereof, on this basis, those skilled in the art can make other modification and improvement.These modification and improvement fall into the protection domain of this utility model.
Claims (20)
1. disposable syringe comprises:
Overcoat (1), said overcoat (1) comprise the inside (7) of near-end (5), far-end (6) and hollow, and said inside (7) are limited the inwall (8) of tubular;
Push rod (3); Also can move by said relatively overcoat (2) in the inside (7) that is positioned at said overcoat; Said push rod (3) comprises the outside near-end (11) of the near-end (5) that is positioned at said overcoat, be positioned at said overcoat inside (7) far-end (10) and at the axis (12) that extends through the near-end (11) of said push rod and far-end (10), the far-end of said push rod (10) is formed with and keeps off platform (13);
Plug (4), said plug (4) is installed on the said push rod, is positioned at the distally of said retaining platform (13), can contact with inwall (8) liquid sealing of said overcoat,
It is characterized in that said retaining platform (13) comprising:
The main part (15) that forms round the axis (12) of said push rod,
Be used to push the pushing part (16) of said plug, said pushing part (16) is the extension of the direction along the axis that deviates from said push rod (12) from said main part (15),
Wherein, said pushing part is constructed to, and when said plug is stopped at the far-end of said overcoat, only is that said pushing part is out of shape owing to continuing the said plug of pushing.
2. disposable syringe as claimed in claim 1 is characterized in that, also comprises needle stand (2), and said needle stand (2) is positioned at the far-end (6) of said overcoat and comprises first snap fastener (9); The far-end of said push rod (10) is formed with second snap fastener (14); Said second snap fastener is positioned at the distally of said plug (4), and said second snap fastener (14) can be through the distortion and said first snap fastener (9) engagement of said pushing part (16) when injection finishes.
3. disposable syringe as claimed in claim 1 is characterized in that, said retaining platform (13) forms with elastomeric material.
4. disposable syringe as claimed in claim 1 is characterized in that, said pushing part (16) is the lamellar of cardinal principle perpendicular to said axis (12).
5. disposable syringe as claimed in claim 1 is characterized in that, said pushing part (16) is made up of a plurality of finger portion, and said a plurality of finger portion are symmetrically distributed with respect to the plane (17,18) through said axis (12).
6. disposable syringe as claimed in claim 1 is characterized in that, said pushing part (16) is made up of a plurality of finger portion, and said a plurality of finger portion are symmetrically distributed with respect to said axis (12).
7. like each described disposable syringe in the claim 1 to 6, it is characterized in that said push rod (3) comprises the flexible part (21) of next-door neighbour's said retaining platform (13) nearside.
8. like each described disposable syringe in the claim 1 to 6, it is characterized in that said push rod (3) also comprises restriction platform (20), said restriction platform (20) is positioned at the nearside of said retaining platform (13), is used to limit the deflection of said pushing part (16).
9. disposable syringe as claimed in claim 8; It is characterized in that; Said push rod (3) also comprises platform (19), and said platform (19) is positioned at the nearside of said retaining platform (13), and said restriction platform (20) is for being formed on said platform (19) on and the said pushing corresponding boss of (16) shape partly.
10. disposable syringe as claimed in claim 8 is characterized in that, the part between said platform (19) and said retaining platform (13) of said push rod (3) is flexible part (21).
11. a push rod that is used for disposable syringe comprises near-end (11), far-end (10) and the axis (12) that passes through said near-end and remote extension, the far-end of said push rod (10) is formed with retaining platform (13), it is characterized in that said retaining platform (13) comprising:
The main part (15) that forms round the axis (11) of said push rod,
The pushing part (16) that direction from said main part (15) along the axis that deviates from said push rod (12) is extended.
12. push rod as claimed in claim 11 is characterized in that, the far-end of said push rod (10) is formed with snap fastener (14), and said snap fastener is positioned at the distally of said retaining platform (13).
13. push rod as claimed in claim 11 is characterized in that, said retaining platform (13) forms with elastomeric material.
14. push rod as claimed in claim 11 is characterized in that, said pushing part (16) is the lamellar of cardinal principle perpendicular to said axis (12).
15. push rod as claimed in claim 11 is characterized in that, said pushing part (16) is made up of a plurality of finger portion, and said a plurality of finger portion are symmetrically distributed with respect to the plane (17,18) through said axis (12).
16. push rod as claimed in claim 11 is characterized in that, said pushing part (16) is made up of a plurality of finger portion, and said a plurality of finger portion are symmetrically distributed with respect to said axis (12).
17., it is characterized in that said push rod (3) comprises the flexible part (21) of next-door neighbour's said retaining platform (13) nearside like each described push rod in the claim 11 to 16.
18., it is characterized in that said push rod (3) also comprises restriction platform (20) like each described push rod in the claim 11 to 16, said restriction platform (2) is positioned at the nearside of said retaining platform (13).
19. push rod as claimed in claim 18 is characterized in that, said push rod (3) also comprises platform (19), and said platform (19) is positioned at the nearside of said retaining platform (13), and said restriction platform (20) is for being formed on the boss on the said platform (19).
20. disposable syringe as claimed in claim 18 is characterized in that, the part between said platform (19) and said retaining platform (13) of said push rod (3) is flexible part (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271488 CN202569095U (en) | 2012-06-06 | 2012-06-06 | Disposable syringe and push rod for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271488 CN202569095U (en) | 2012-06-06 | 2012-06-06 | Disposable syringe and push rod for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202569095U true CN202569095U (en) | 2012-12-05 |
Family
ID=47238556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220271488 Expired - Fee Related CN202569095U (en) | 2012-06-06 | 2012-06-06 | Disposable syringe and push rod for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202569095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181919A1 (en) * | 2012-06-06 | 2013-12-12 | Shanghai Sol-Millennium Medical Products Co., Ltd. | Disposable syringe and push rod for the same |
| US10537687B2 (en) | 2011-09-01 | 2020-01-21 | Sol-Millennium Medical Hk Limited | Needle protection device and safety needle assembly |
-
2012
- 2012-06-06 CN CN 201220271488 patent/CN202569095U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10537687B2 (en) | 2011-09-01 | 2020-01-21 | Sol-Millennium Medical Hk Limited | Needle protection device and safety needle assembly |
| WO2013181919A1 (en) * | 2012-06-06 | 2013-12-12 | Shanghai Sol-Millennium Medical Products Co., Ltd. | Disposable syringe and push rod for the same |
| CN103463713A (en) * | 2012-06-06 | 2013-12-25 | 上海萌黎国际贸易有限公司 | Disposable syringe and push rod for disposable syringe |
| US9669166B2 (en) | 2012-06-06 | 2017-06-06 | Sol-Millennium Medical Hk Limited | Disposable syringe and push rod for the same |
| CN103463713B (en) * | 2012-06-06 | 2019-09-13 | 千禧光医疗科技(上海)有限公司 | Disposable syringe and push rod for disposable syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 200135 room 58, Zheng Da Cube Edifice, No. 2202 Chang Liu Road, Shanghai, Pudong New Area Patentee after: Shanghai Sol-Millennium Medical Products Co., Ltd. Address before: 200120, room 701-703, building E, Poly Plaza, 18 Dongfang Road, Shanghai, Pudong Patentee before: Shanghai Sol-Millennium Medical Products Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200135 room 58, Zheng Da Cube Edifice, No. 2202 Chang Liu Road, Shanghai, Pudong New Area Patentee after: Millennium Light Medical Technology (Shanghai) Co., Ltd. Address before: 200135 room 58, Zheng Da Cube Edifice, No. 2202 Chang Liu Road, Shanghai, Pudong New Area Patentee before: Shanghai Sol-Millennium Medical Products Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20210606 |