CN202015392U - Disposable syringe and core rod - Google Patents
Disposable syringe and core rod Download PDFInfo
- Publication number
- CN202015392U CN202015392U CN2010206605503U CN201020660550U CN202015392U CN 202015392 U CN202015392 U CN 202015392U CN 2010206605503 U CN2010206605503 U CN 2010206605503U CN 201020660550 U CN201020660550 U CN 201020660550U CN 202015392 U CN202015392 U CN 202015392U
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- CN
- China
- Prior art keywords
- core bar
- sealing
- overcoat
- plug
- syringe
- 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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Abstract
The utility model discloses a disposable syringe and a core rod in medical apparatus and instruments, wherein the syringe is composed of an outer sleeve and a core rod or composed of an outer sleeve and a core rod assembly; the syringe of the utility model without a rubber plug belongs to a two-piece syringe in the traditional location, which is a syringe with simple structure, low cost, good use performance and small side effect; the material of the outer sleeve is medical polypropylene used by a common syringe; the sealing plugs of the core rod and the core rod assembly are injection-moulded by a thermoplastic elastic body injection material; according to the strength and hardness needs of the core rod and the sealing plugs, a certain amount of polypropylene (or polyethylene) can be added in the thermoplastic elastic body to injection-mould; a plurality of pairs of independent holes is formed in the cross ribs of the core rod and a push rod.
Description
Technical field
This utility model belongs to medical instruments field, is specifically related to the disposable syringe in the disposable use medical treatment consumptive materials.
Background technology
Syringe is that Bu Laishi Pascal is greatly about left and right sides utility model in 1650.Syringe and hypodermic needle connect together and are used for liquid being injected into bodily tissue or therefrom extracting out.
Modern medical service syringe majority is made of plastic, is applicable to injecting liquid drug or suction blood such as human body is subcutaneous, muscle, vein, for disposable use, has avoided medical cross infection.Modern syringe of a great variety: ordinary syringe, two-piece type syringe, self-destruction syringe, safe syringe, needleless injector.
Syringe has a lot of deficiencies on the market, and ordinary syringe, self-destroyed syringe, the safety injector cost is higher and the side effect of rubber plug is big; The resistance to sliding of two-piece type injector to inject is big and inhomogeneous, and the structural design waste of material of core bar and overcoat is very big.If reduce the side effect of two-piece type syringe, must utilize the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, but because the thermoplastic elastomer (TPE) injected plastics material has certain elasticity, therefore if adopt this material then can have influence on the sealing of syringe greatly, and production cost is higher, so is sought after a kind of simple in structure, cost is low, serviceability is good, side effect is little syringe on the market.
The utility model content
The purpose of this utility model is to overcome above-mentioned existing disposable syringe deficiency, provides a kind of resistance to sliding little, and production cost is low, and little disposable syringe and the core bar of side effect.
The technical scheme that this utility model technical solution problem is adopted is:
Disposable syringe, form by overcoat, core bar, core bar is loaded on the outer sleeve intracavity, the sealing bulge loop of outer sleeve chamber and core bar is full of fitted seal, it is characterized in that: described overcoat front end has annular protrusion, the conehead that is connected with entry needle is distributed on the annular protrusion, and overcoat inner chamber front end has annular groove, and the overcoat tail end is provided with independent hole by the hands place; Described core bar adopts the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, and the cross muscle of core bar is provided with independent hole; The front end of four muscle of core bar has four breach, and four breach are distributed in by the connector, and the core bar front end is provided with sealing bulge loop and loop buffer groove.
The external diameter of sealing bulge loop of the present utility model is greater than the overcoat cylinder internal diameter.
Connector of the present utility model is a cross or cylindrical.
Sealing bulge loop of the present utility model is on the outer shroud of the front side of seal head, and the loop buffer groove is in the side of seal head.
The core bar of disposable syringe in this utility model, form by push rod and sealing-plug, it is characterized in that: described push rod adopts polypropylene for medical article or polythene material injection mo(u)lding, sealing-plug adopts the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, sealing-plug is provided with cannelure, Ka Tai, front end is provided with the loop buffer groove, and the push rod front end has cross breach, draw-in groove, Ka Tai, and the cannelure of sealing-plug is loaded on the Ka Tainei of push rod and intermittently cooperates; The Ka Tai of sealing-plug is loaded on the interior and intermittently cooperation of draw-in groove of push rod; The Ka Tai side of sealing-plug is stuck on the Ka Tai side of push rod and intermittently and cooperates.
The syndeton of push rod described in this utility model and sealing-plug is the internal and external screw thread syndeton.
Core bar and sealing-plug adopt the injection mo(u)lding of a kind of thermoplastic elastomer (TPE) injected plastics material in this utility model, intensity and hardness needs according to core bar, can in thermoplastic elastomer (TPE), add a certain amount of polypropylene (or polyethylene) injection mo(u)lding, can also in thermoplastic elastomer (TPE), add a certain amount of lubricant injection moulding as required, core bar and sealing-plug intensity promptly remain on shore hardness at 75A to 110A(or 75D between thermoplastic elastic and polypropylene) between.
A lot of independent holes are arranged on the cross muscle of core bar, and these holes can connect, and also can not connect, and these holes are distributed on two muscle or four muscle of cross muscle.The front end of four muscle of core bar has four breach, and four breach are distributed near the connector, and connector is a cross or cylindrical.The core bar front end has sealing bulge loop and loop buffer groove.
The overcoat front end has annular protrusion, the conehead that is connected with entry needle be distributed on the projection or between, overcoat inner chamber front end has annular groove.The overcoat tail end has a lot of independent holes by the hands place, and these holes can connect, and also can not connect.
The beneficial effects of the utility model are:
1, the setting of overcoat employing annular protrusion of the present utility model and annular groove is the change in size that the contraction distortion of plastics causes when being enclosed within injection mo(u)lding outside considering, cause syringe to change too greatly, had annular protrusion and annular groove can alleviate the outer change in size that the contraction distortion of plastics causes when being enclosed within injection mo(u)lding greatly in the time injection thrust that finishes of injection soon.
2, core bar of the present utility model is owing to adopt the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, therefore whole core bar has certain elasticity, if adopt general core bar structure then the sealing of syringe can reduce greatly, therefore this utility model is established four breach on four muscle front ends of core bar, four breach are distributed near the connector, at this place breach is set and connector has reduced the intensity at this place, the core bar that syringe is caused owing to manual operation when injection rocks too big the rocking of sealing bulge loop that can not cause on the seal head, promptly can not influence the sealing of sealing bulge loop, solve simultaneously because adopt the core bar of thermoplastic elastomer (TPE) injected plastics material injection mo(u)lding to bring the technical problem of sealing effectiveness difference to syringe.
3, this utility model belongs to the two-piece-dress syringe without plug on the tradition location, and lagging material is the polypropylene for medical article that ordinary syringe is used; Core bar and sealing-plug adopt the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, according to the intensity and the hardness needs of core bar and sealing-plug, can add a certain amount of polypropylene (or polyethylene) injection mo(u)lding in thermoplastic elastomer (TPE); Having on the cross muscle of core bar and push rod much independent hole, therefore is a kind of simple in structure, cost is low, serviceability is good, side effect is little syringe.
Description of drawings
Fig. 1: be structural representation of the present utility model.
Fig. 2: be cross-sectional view of the present utility model.
Fig. 3: be overcoat cross-sectional view of the present utility model.
Fig. 4: be overcoat upward view of the present utility model.
Fig. 5: be I part enlarged drawing among Fig. 3.
Fig. 6: be core bar 02 structural representation of the present utility model.
Fig. 7: the cross-sectional view that is core bar 02 of the present utility model.
Fig. 8: be the core bar sectional structure sketch map that push rod of the present utility model and sealing-plug are assembled into.
Fig. 9: be sealing-plug perspective view of the present utility model.
Figure 10: be sealing-plug side-looking structural representation of the present utility model.
Figure 11: be K part enlarged drawing among Fig. 7.
Figure 12: be push rod sectional structure sketch map of the present utility model.
Figure 13: be that push rod of the present utility model is looked up structural representation.
Figure 14: be push rod perspective view of the present utility model.
Among the figure: the 01-overcoat; The 02-core bar; The 03-boss; The 04-hole; The 05-groove; The 06-hole; The 07-breach; The 08-connector; The 09-push rod; The 10-sealing-plug; The 11-cannelure; 12-card platform 13-Ka Tai side; 14-seals bulge loop; 15-loop buffer groove; 16-cross breach; The 17-draw-in groove; 18-Ka Tai side 19-Ka Tai; The 20-seal head; The 21-groove.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described further, but protection domain of the present utility model is not limited in following embodiment.
As shown in Figure 1, 2: core bar 02 is loaded on 01 intracavity of overcoat.The sealing bulge loop 14 of 01 chamber of overcoat and core bar 02 is that interference fit realizes sealing.Overcoat 01 material is the polypropylene for medical article that ordinary syringe is used; Core bar 02 adopts the injection mo(u)lding of a kind of thermoplastic elastomer (TPE) injected plastics material, intensity and hardness needs according to core bar 02, can in thermoplastic elastomer (TPE), add a certain amount of polypropylene (or polyethylene) injection mo(u)lding, can also in thermoplastic elastomer (TPE), add a certain amount of lubricant injection moulding as required, core bar 02 intensity is between thermoplastic elastic and polypropylene, and the shore hardness of core bar 02 is at 75A to 110A(or 75D) between.
Thermoplastic elastomer (TPE) (TPE) is the lower elastomeric material of modulus of elasticity normally, can be stretched to repeatedly more than the twice of original length at ambient temperature, and have the ability that almost completely returns to its original length behind stress relieving.
As Fig. 3,4,5: overcoat 01 front end has annular protrusion 03, the conehead that is connected with entry needle be distributed on the annular protrusion 03 or between, overcoat inner chamber front end has annular groove 05.The overcoat tail end has a lot of independent holes 04 by the hands place, and these holes 04 can connect, and also can not connect.These holes reduce cost and consider to be provided with for saving overcoat 01 material, and other syringe jacket reduces material and reduces cost that it can not influence the performance of overcoat by these holes also can be set on hand.The setting of annular protrusion 03 and annular groove 05 is a change in size of considering that the contraction distortion of overcoat 02 plastics when injection mo(u)lding causes, cause syringe to change too greatly, the change in size that has had contraction distortion that annular protrusion 03 and annular groove 05 can be alleviated overcoat 02 plastics when injection mo(u)lding greatly to cause in the time injection thrust that finishes of injection soon.
As Fig. 6,7,11: a lot of independent holes 06 are arranged on the cross muscle of core bar 02, these holes 06 can connect, can not connect yet, these holes 06 are distributed on two muscle or four muscle of cross muscle, these holes reduce cost and consider to be provided with for saving core bar 02 material, these holes also can be set on other syringe core rod cross muscle reduce material and reduce cost.The front end of 02 4 muscle of core bar has 07, four breach of four breach to be distributed in around the connector 08, and connector 08 is a cross or cylindrical.The purpose that this place is provided with breach 07 and connector 08 is to reduce the intensity at this place, the core bar that syringe is caused owing to manual operation when injection rocks too big the rocking of sealing bulge loop 14 that can not cause on the seal head 20, promptly can not influence the sealing of 14 pairs of syringes of sealing bulge loop.Core bar 02 front end has sealing bulge loop 14 and loop buffer groove 15, and sealing bulge loop 14 is on the outer shroud of the front side of seal head 20, and loop buffer groove 15 is in the side of seal head 20, and the external diameter of sealing bulge loop 14 is greater than overcoat 02 cylinder internal diameter.
As Fig. 8,9,10,12,13,14: be the disposable syringe core bar that another kind is applicable to overcoat 01, it is made up of push rod 09 and sealing-plug 10, push rod 09 adopts polypropylene for medical article or polythene material injection mo(u)lding, sealing-plug 10 adopts the injection mo(u)lding of a kind of thermoplastic elastomer (TPE) injected plastics material, intensity and hardness needs according to sealing-plug, can in thermoplastic elastomer (TPE), add a certain amount of polypropylene (or polyethylene) injection mo(u)lding, can also in thermoplastic elastomer (TPE), add a certain amount of lubricant injection moulding as required, sealing-plug intensity is between thermoplastic elastic and polypropylene, and the shore hardness of sealing-plug is at 75A to 110A(or 75D) between.
The syndeton of push rod 09 and sealing-plug 10 also can be designed to the internal and external screw thread syndeton.
During concrete the use core bar 02 is inserted in the overcoat 01 and just can directly uses, also can improve the relative sliding of overcoat 01 and core bar 02 during with core bar 02 assembling earlier to overcoat 01 li spray moderate lubrication agent (silicone oil) at overcoat 01.
Push rod 09 and sealing-plug 10 be assembled together form the core bar assembly, the function that realizes core bar is inserted in the overcoat 01 again and get final product, also the relative slip that can spray moderate lubrication agent (silicone oil) raising overcoat 01 and core bar assembly earlier to 01 li in overcoat during with the core bar assembled at overcoat 01.
To the technical solution of the utility model only make equivalent structure replacement or to core technology of the present utility model make out substantial change also within protection domain of the present utility model.
Claims (7)
1. disposable syringe core bar, form by push rod (09) and sealing-plug (10), it is characterized in that: described push rod (09) adopts polypropylene for medical article or polythene material injection mo(u)lding, sealing-plug (10) adopts the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, sealing-plug (10) is provided with cannelure (11), Ka Tai (12), front end is provided with loop buffer groove (21), push rod (09) front end has cross breach (16), draw-in groove (17), Ka Tai (19), and the cannelure (11) of sealing-plug (10) is loaded on the interior and intermittently cooperation of Ka Tai (19) of push rod (09); The Ka Tai (12) of sealing-plug (10) is loaded on the interior and intermittently cooperation of draw-in groove (17) of push rod (09); The Ka Tai side (13) of sealing-plug (10) is stuck in the Ka Tai side (18) of push rod and goes up and intermittently cooperation.
2. disposable syringe core bar according to claim 1 is characterized in that: the shore hardness of described sealing-plug (10) is between 75A to 110A.
3. disposable syringe that uses the described core bar of claim 1 to make, it is characterized in that: form by overcoat (01), core bar (02), core bar (02) is loaded on overcoat (01) tube intracavity, the sealing bulge loop (14) of overcoat (01) tube chamber and core bar (02) is full of fitted seal, described overcoat (01) front end has annular protrusion (03), the conehead that is connected with entry needle is distributed on the annular protrusion (03), overcoat (01) inner chamber front end has annular groove (05), and overcoat (01) tail end is provided with independent hole (04) by the hands place; Described core bar (02) adopts the injection mo(u)lding of thermoplastic elastomer (TPE) injected plastics material, and the cross muscle of core bar (02) is provided with independent hole (06); The front end of (02) four muscle of core bar has four breach (07), and four breach are distributed in connector (08) on every side, and core bar (02) front end also is provided with sealing bulge loop (14) and loop buffer groove (15).
4. disposable syringe according to claim 3 is characterized in that: the external diameter of sealing bulge loop (14) is greater than the simplified internal diameter of overcoat (01).
5. disposable syringe according to claim 3 is characterized in that: the shore hardness of core bar (02) is between 75A to 110A.
6. disposable syringe according to claim 3 is characterized in that: connector (08) is a cross or cylindrical.
7. disposable syringe according to claim 3 is characterized in that: sealing bulge loop (14) is on the front side outer shroud of seal head (20), and loop buffer groove (15) is in the side of seal head (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206605503U CN202015392U (en) | 2010-12-15 | 2010-12-15 | Disposable syringe and core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206605503U CN202015392U (en) | 2010-12-15 | 2010-12-15 | Disposable syringe and core rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202015392U true CN202015392U (en) | 2011-10-26 |
Family
ID=44809074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206605503U Expired - Fee Related CN202015392U (en) | 2010-12-15 | 2010-12-15 | Disposable syringe and core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202015392U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395620A (en) * | 2018-10-29 | 2019-03-01 | 北京航天新风机械设备有限责任公司 | A kind of disposable tool for the mixing of low dose of thick liquid |
| CN110680603A (en) * | 2019-11-04 | 2020-01-14 | 上海康德莱企业发展集团股份有限公司 | Precise injection device for ophthalmology department |
| CN110786984A (en) * | 2019-11-04 | 2020-02-14 | 上海康德莱企业发展集团股份有限公司 | Special silicone oil-free injector for ophthalmology |
| CN117550214A (en) * | 2024-01-12 | 2024-02-13 | 山东永聚医药科技股份有限公司 | Scratch-resistant nest plate for cycloolefin polymer pre-filled syringe and preparation process thereof |
-
2010
- 2010-12-15 CN CN2010206605503U patent/CN202015392U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395620A (en) * | 2018-10-29 | 2019-03-01 | 北京航天新风机械设备有限责任公司 | A kind of disposable tool for the mixing of low dose of thick liquid |
| CN110680603A (en) * | 2019-11-04 | 2020-01-14 | 上海康德莱企业发展集团股份有限公司 | Precise injection device for ophthalmology department |
| CN110786984A (en) * | 2019-11-04 | 2020-02-14 | 上海康德莱企业发展集团股份有限公司 | Special silicone oil-free injector for ophthalmology |
| CN117550214A (en) * | 2024-01-12 | 2024-02-13 | 山东永聚医药科技股份有限公司 | Scratch-resistant nest plate for cycloolefin polymer pre-filled syringe and preparation process thereof |
| CN117550214B (en) * | 2024-01-12 | 2024-03-15 | 山东永聚医药科技股份有限公司 | Scratch-resistant nest plate for cycloolefin polymer pre-filled syringe and preparation process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |