CN1036139A - Disposable syringe - Google Patents
Disposable syringe Download PDFInfo
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- CN1036139A CN1036139A CN 89105244 CN89105244A CN1036139A CN 1036139 A CN1036139 A CN 1036139A CN 89105244 CN89105244 CN 89105244 CN 89105244 A CN89105244 A CN 89105244A CN 1036139 A CN1036139 A CN 1036139A
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- syringe
- needle
- capsule
- curved surface
- truncated cone
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Abstract
Disposable syringe belongs to medical instruments field.Band agent capsule syringe needle of the present invention is the parts of unique contact agent liquid, also is once to use the unique depleted part in back, and raw materials consumption is reduced, and safety improves.Syringe needle also has repeatedly new function such as tonic of storage liquid, the treatment calm pulse administration of long-term imbedding needle and inserting needle.Syringe needle engages with injection locker mechanism, changes the pressure of the enclosed space between syringe and agent capsule by piston motion, and forces the agent scrotiform to become to finish injection process.
Description
The present invention relates to a kind of disposable syringe, belong to medical instruments field.
The disposable syringe of existing use becomes axial piston (2) movingly by the syringe (1) of band pin mouth on the end socket with the straight tubular inwall (24) of syringe (1), and the syringe needle (3) that entry needle (19) and fixture needle stand (16) thereof constitute is formed.Its operation principle is to utilize piston (2) to extrude or inhalant liquid along the positive/negative pressure that straight tubular inwall (24) power that reciprocatingly slides produces, thereby finishes function of injection.It is worthy of note that all parts of agent liquid and syringe all come in contact, once use the whole syringe in back discarded.This kind disposable syringe structurally with on the function does not roughly have two, the material that has adopted plastics and rubber etc. easily to shape nothing but with the syringe of repeatedly recycling.Retrieve to greatest extent and consult through the inventor, do not find to exceed the relevant patent and the document of disposable syringe of above-mentioned technical characterictic.
About the operating position of this kind disposable syringe, 1986 the 29th the 10th phases of volume of " the practical nursing magazine " that LiaoNing, China province Daliang City " practical nursing magazine " editorial office publishes (publish day: in October, 1986) published " disposable medical plastic injector " literary composition that the 6th Miao of hospital of Beijing sea duckweed is write on the 29th page.By the situation that this article and the inventor understand from other various approach, reflect this kind syringe owing to once use the whole syringe in back discarded, have that to abandon the post processing amount big, storing and outer taking are given first aid to inconvenience, the raw materials consumption height, the country and people's burden heavily waits problem, hinders it and popularizes rapidly.
Only discard syringe needle (3) after the objective of the invention is to develop a kind of once use, the disposable syringe that syringe (1) and piston (2) all can repeatedly reuse, and the long-term imbedding needle loading of tax and inserting needle new function such as supplement liquid repeatedly.
The disposable syringe of the present invention's development as shown in Figure 1 and Figure 2, by syringe (1), become axial piston (2) movingly with the straight tubular inwall (24) of syringe (1), the syringe needle (3) that entry needle (19) and fixture needle stand (16) thereof constitute is formed.Essence of the present invention is, syringe needle (3) has the agent capsule (7) that a flexible liquid-tight material is made, agent capsule (7) is connected with liquor passage (15) outer part of needle stand (16) by capsule oral area (8), and forming with entry needle (19) is the storage liquid inner chamber of import and export.The parts relevant with human infection only limit to syringe needle (3), once use the back waste part also to only limit to syringe needle (3).This change not only makes injection safety improve, and waste part becomes seldom, can bring many advantages.Therefore cause that changing is that syringe (1) is the tubular article of an open at both ends.Its rear end opening is the same with present syringe, can hold piston (2) and freely load and unload; Its front opening can same syringe needle (3) engages, and makes that part becomes an enclosed space outside the agent capsule (7) of syringe (1) inner chamber; Change the pressure of this enclosed space by the reciprocating motion of piston (2), can force agent capsule (7) thereupon deformation suck or extrude agent liquid, finish function of injection.Multiple locker mechanism be can design and syringe needle (3) and the fluid-tight engagement of syringe (1) ensured with syringe (1) front end.This lock class mechanism can be the component part on syringe (1) and syringe needle (3) body, also can be both these external parts.Between syringe (1) front end and the syringe needle (3) potted component can also be arranged, to ensure sealing; The sealing element can be the component part on syringe (1) and syringe needle (3) body equally, also can be the parts outside the body.
Syringe (1), piston (2) and the syringe needle parts such as (3) of the present invention's development have the architectural feature of impelling agent capsule (7) that deformation effectively takes place.As shown in Figure 1, the interior table of syringe (1) connects one section path truncated cone shape inwall (25) formation the preceding by straight tubular inwall (24) front end, and the dotted line in the cut-away view is its demarcation line.Corresponding piston (2) front end connects path bellows body (26) the preceding, and it is made of front end face-convex surface (27) and identical with it truncated cone shape sidewall (30).Leave radially identical bellows crack (6) between wall (24), (25) within truncated cone shape sidewall (30) and the syringe (1).Corresponding with convex surface (27), the liquor passage (15) of needle stand (16) bottom surface is a concave curved surface (17) all around.The function of bellows body (26) is to be exerted pressure in the part of agent capsule (7).Push ahead in the process at piston (2), the pressure that agent capsule (7) capsule bottom that contacts with piston (2) and near part cyst wall thereof are subjected to is big than remainder, forces them tightly to be coated on whole convex surface (27) and the part truncated cone shape sidewall (30); Simultaneously, the reverse static pressure of the interior agent liquid of agent capsule (7) is impelled constantly warpage, extension in bellows crack (6) of cyst wall, coats the protruding curved surface (28) that forms behind one deck cyst wall until convex surface (27) and fits like a glove with concave curved surface (17).Obviously, make in the agent capsule (7) not entraps globule liquid, truncated cone shape sidewall (30) should have identical tapering with truncated cone shape inwall (25); Both axial lengths also should be equal to or greater than half of agent capsule (7) length, and when protruding curved surface (28) was coincide with concave curved surface (17), the method in bellows crack (6) between the two was equivalent to two-layer cyst wall thick (referring to Fig. 2) with width.
On the basis of last joint described syringe (1), piston (2) and syringe needle (3) structure, as shown in Figure 2, after bellows body (29) is put on the resilient bushing (4) of an appearance by truncated cone shape side surface (31) and protruding bent end face (32) formation, better with the anastomose property meeting of truncated cone shape inwall (25) and needle stand (16) bottom surface liquor passage (15) concave curved surface (18) all around.Leave radially identical bellows crack (6) between the inwall (24) of truncated cone shape side surface (31) and syringe (1), (25).The curvature of concave curved surface (18) is a bit larger tham or is equaled the curvature that protruding bent end face (32) coats the protruding curved surface (33) that forms behind one deck cyst wall; And concave curved surface (18) has the periphery that can coincide together with protruding curved surface (33).This cooperation can concentrate on entraps globule liquid the porch of the liquor passage (15) of concave curved surface (18), utilizes resilient bushing (4) deformation with its whole extrusion then.Obviously, truncated cone shape side surface (31) is necessary identical with the tapering of truncated cone shape inwall (25), both axial lengths also should be equal to or greater than half of agent capsule (7) length, and when concave curved surface (18) overlaps with both peripheries of protruding curved surface (33), the normal direction width in the bellows crack (6) between truncated cone shape side surface (31) and the truncated cone shape inwall (25) is equivalent to two-layer cyst wall when thick, and the entraps globule liquid in the agent capsule (7) is all concentrated to concave curved surface (18).
Fig. 1-4 comparatively simple locker mechanism of a class that demonstrates out, i.e. scarce garden post boss (11) on syringe (1) body and the fixedly chuck (14) that cooperates with it.Lack garden post boss (11) and be positioned at syringe (1) front end, the cylinder of its protrusion syringe (1) outer wall and former and later two end faces are all by pawl groove (10) disjunction, fixedly chuck (14) Nei Biao coincide with the gusset and the part front end face of the needle stand (16) that is inserted in, and makes syringe needle (3) can not take place to move forward and rock.Fixedly the remainder of showing in the chuck (14) can form axially reciprocal with scarce garden post boss (11) cylinder that is inserted in and pivot two kinds movingly.Its big opening end has the hook (13) of two energy fastening rear end faces (12) at least; The latter can be along freeing in and out with the pawl groove (10) of hook (13) with number at least.Needle stand (16) front end not with fixing chuck (14) coincide part, be that exposed division can be less, as they (22) among Fig. 1, Fig. 2, when its needle stand (16) adopted half flexible material, syringe needle (3) also was difficult for rocking; Exposed division also can be bigger, and as (23) among Fig. 4, loading and unloading syringe needles (3) can be easy slightly.
Fixedly chuck (5) shown in Figure 5 is on syringe needle (3) body, is the extension of needle stand (16).Though it is some more slightly to discard the material consumption of portion after it once uses, can make injection operation the same convenient with the syringe of existing use.
Make syringe needle (3) and the sealing of syringe (1) front end junction surface, the agent capsule (7) that causes syringe (1) the inner chamber part potted component that becomes enclosed space in addition can be the flanging that needle stand (16) is gone up the capsule oral area (8) that contacts with the pipe end face (9) of syringe (1) front end, also can be a seal washer that adds, so that produce suitability (as shown in Fig. 1,2,3) preferably under external pressure.
Agent capsule (7) can also be made with the liquid-tight membrane material of elasticity.Because its elastic deformation ability, suction agent liquid can be the several times of its normal pressure capacity, and agent capsule (7) itself has possessed and is about to the function that agent hydraulic pressure goes out certainly simultaneously.This syringe needle (3) is specially adapted to needle-embedding therapy or intravenously administrable slowly; Syringe needle (3) can keep after entering the position that human body therapy needs for a long time, by the elastic deformation power of agent capsule (7) agent liquid is slowly imported agents area.This is for acupoint therapy, the liquor-saturated or pain relieving of long-acting local degree, and the process that long-acting contraception etc. slowly discharges the property of medicine all has big meaning.The occasion that some is urgent is not even used syringe (1) and piston (2), only can finish conventional injection with this kind syringe needle (3) of the agent liquid of substituting the bad for the good yet.
Fig. 6 another kind of distinctive dose of capsule (7) of demonstrating out.Its cyst wall can be that aforementioned flexibility or elasticity liquid-tight material are made; The puncture pad (21) that its bottom has a puncture resistant materials to make.Puncture pad (21) can be the additional junctional complex of agent capsule (7) body, also can be the capsule that is shaped of agent capsule (7) time processing at the bottom of.The syringe needle (3) that has a this dose of capsule (7) is used for imbedding needles treatment such as joint described acupoint therapy, long-acting local anesthesia or pain relieving, long-acting contraception or slowly during intravenously administrable, can be by puncture pad (21) supplement liquid repeatedly, the misery of having avoided repeatedly inserting needle to cause.
Can add a needle guard (20) on the entry needle (19), its effect be blockade needle (3) whole inner chamber, prevent to pollute and agent capsule (7) the evacuation after-contraction of empty needle head (3) reunited among concave curved surface (17), (18), use (as Fig. 5 when being convenient to operate.Whole dose of capsule (7) do not analysed and observe among the figure).After the syringe needle (3) that has agent capsule (7) has added needle guard (20), also can directly store some agent liquid and blood sample, reduce the number of turnover, reduce contamination of heavy.
The operation of embodiments of the present invention and this kind disposable syringe has been expressed very detailedly by above-mentioned explanation and accompanying drawing. In addition, it can sealed package before once use section-syringe needle (3) dispatches from the factory, except keep its aseptic, absorbent cotton or the analog that can also pack in the closure and soak sufficient thimerosal are convenient to injection operation and are carried out whenever and wherever possible.
A property syringe of the present invention's development, adopted the syringe needle (3) of band agent capsule (7), in addition, different any other parts contacts of injection liquid, except safety in utilization increased, once using the back waste part also to reduce to only was so widget of syringe needle (3).This point will be brought great positive effect undoubtedly.Parts design outside the syringe needle (3) is also very novel, can ensure that this new-type disposable syringe possesses perfect functions and simple and reliable operation, syringe needle (3) itself also possesses store function, when injection or blood count operation, can reduce agent liquid or blood sample transfer number, in some urgent occasion, also can finish conventional injection without syringe (1) and piston (2).Another new function of this kind syringe needle (3) is to stay successive administration on the human body for a long time, can be used for imbedding needle treatment and intravenously administrable, and can one time inserting needle supplement liquid repeatedly, bring multiple facility to injection.The disposable syringe that can expect the development of such conclusion-of the present invention patent realized the syringe invention and use since once thoroughly change.Enforcement of the present invention and application also will make the storing of disposable syringe and abandon post processing and become simple, and reduce social contamination of heavy; Take use outward, on-the-spot rescue and using when saving oneself in disaster or the war especially, its superiority can be especially outstanding.Consider that from economic angle the present invention can reduce the input of promoting the required raw materials consumption of disposable syringe and equipment, manpower, alleviates the country and people's burden greatly.
Description of drawings:
Fig. 1, not with the B-B profile of the disposable syringe of resilient bushing (4).
The B-B profile of the disposable syringe of Fig. 2, band resilient bushing (4).
Fig. 3, A-A are to profile.
Fig. 4, fixedly chuck (4) sketch map that a kind of exposed division (23) is bigger.
Fig. 5, the fixing sketch map of chuck (5), it is the extension of needle stand (16).
The sketch map of the syringe needle (3) of Fig. 6, agent capsule (7) capsule tail band puncture pad (21).
More than among each figure:
(1) syringe; (2) piston; (3) syringe needle; (4) resilient bushing; (5) fixing chuck; (6) bellows crack; (7) agent capsule; (8) capsule oral area; (9) pipe end face; (10) pawl groove; (11) lack garden post boss; (12) rear end face; (13) hook; (14) fixing chuck; (15) liquor passage; (16) needle stand; (17) concave curved surface; (18) concave curved surface; (19) entry needle; (20) needle guard; (21) puncture pad; (22) exposed division; (23) exposed division; (24) straight tubular inwall; (25) truncated cone shape inwall; (26) bellows body; (27) convex surface; (28) protruding curved surface; (29) bellows body; (30) truncated cone shape sidewall; (31) truncated cone shape side surface; (32) protruding bent end face; (33) protruding curved surface.
Claims (9)
1, disposable syringe belongs to medical instruments field.By syringe (1), become axial piston (2) movingly with the straight tubular inwall (24) of syringe (1), the syringe needle (3) that entry needle (19) and fixture needle stand (16) thereof constitute is formed, the invention is characterized in: the two ends of said syringe (1) are unlimited, said syringe needle (3) has the agent capsule (7) that a flexible liquid-tight material is made, agent capsule (7) is connected with liquor passage (15) outer part of needle stand (16) by capsule oral area (8), on said syringe (1) and syringe needle (3) body or have outside the body and make syringe needle (3) fluid-tight engagement at syringe (1) front end and make the agent capsule (7) of syringe (1) inner chamber partly become the locker mechanism and the corresponding potted component of enclosed space in addition.
2, disposable syringe according to claim 1, it is characterized in that: straight tubular inwall (24) front end of said syringe (1) is connected with one section path truncated cone shape inwall (25) the preceding, said piston (2) front end connects path bellows body (26) the preceding, front end face-convex surface (27) that the latter has truncated cone shape sidewall (30) and coincide with it, identical and both axial length of the tapering of truncated cone shape sidewall (30) and truncated cone shape inwall (25) is all more than or equal to half of agent capsule (7) length, the liquor passage (15) of said needle stand (16) bottom surface is one can coat the concave curved surface (17) that the protruding curved surface (28) that forms behind one deck cyst wall is coincide with convex surface (27) all around, the inwall (24) of bellows body (26) and syringe (1), (25) leave radially identical bellows crack (6) between, when said protruding curved surface (28) was coincide with concave curved surface (17), it is thick that the normal direction width of bellows crack (6) is equivalent to two-layer cyst wall.
3, disposable syringe according to claim 1, it is characterized in that: straight tubular inwall (24) front end of said syringe (1) is connected with one section path truncated cone shape inwall (25) the preceding, said piston (2) front end connects a bellows body (29) bellows body (29) and wears the resilient bushing (4) that an appearance is made of truncated cone shape side surface (31) and protruding bent end face (32), identical and both axial lengths of the tapering of said truncated cone shape side surface (31) and truncated cone shape inwall (25) are all more than or equal to half of agent capsule (7) length, the liquor passage (15) of said needle stand (16) bottom surface is a concave curved surface (18) all around, its curvature coats the curvature of the protruding curved surface (33) that forms behind one deck cyst wall more than or equal to protruding bent end face (32), concave curved surface (18) has the periphery that can coincide together with protruding curved surface (33), the inwall (24) of said truncated cone shape side surface (31) and syringe (1), (25) leave radially identical bellows crack (6) between, when both peripheries of said protruding curved surface (33) and concave curved surface (18) overlapped, it is thick that the normal direction width of bellows crack (6) is equivalent to two-layer cyst wall.
4, disposable syringe according to claim 1, it is characterized in that: said locker mechanism for the scarce garden post boss (11) that protrudes syringe (1) outer wall and in table coincide with needle stand (16) gusset that is inserted in and part front end face, and two movingly the fixedly chucks (14) that can form with the cylinder of the scarce garden post boss (11) that is inserted in axially back and forth and pivot, fixedly the big opening end of chuck (14) has at least two energy fastenings to lack garden post boss (11) hook (13) of end face (12) afterwards, lacks to have the pawl groove (10) of counting and hook (13) being freed in and out together with hook (13) on the garden post boss (11) at least.
5, disposable syringe according to claim 4 is characterized in that: said fixedly chuck (5) on syringe needle (3) body, be needle stand (16) and extension.
6, disposable syringe according to claim 1, it is characterized in that: said potted component can be the flanging that is pressed in the capsule oral area (8) on the pipe end face (9) of syringe (1) front end, also can be the seal washer that adds that is pressed between needle stand (16) and the pipe end face (9).
7, disposable syringe according to claim 1 is characterized in that: said dose of capsule (7) made with the elastica material.
8, according to any described disposable syringe in the claim 1,7, it is characterized in that: the puncture pad (21) that said dose of capsule (7) bottom has a puncture resistant materials to make, this puncture pad (21) can be the additional junctional complex of agent capsule (7) body, also can be the capsule that is shaped of agent capsule (7) time processing at the bottom of.
9, disposable syringe according to claim 1, said entry needle (19) can add a needle guard (20) that plays sealing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105244 CN1036139A (en) | 1989-03-11 | 1989-03-11 | Disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105244 CN1036139A (en) | 1989-03-11 | 1989-03-11 | Disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036139A true CN1036139A (en) | 1989-10-11 |
Family
ID=4856011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105244 Pending CN1036139A (en) | 1989-03-11 | 1989-03-11 | Disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082412A1 (en) * | 2012-11-30 | 2014-06-05 | 电白县康尔美生物科技有限公司 | Syringe capable of repeatedly using drive device, and liquid storage device thereof |
-
1989
- 1989-03-11 CN CN 89105244 patent/CN1036139A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082412A1 (en) * | 2012-11-30 | 2014-06-05 | 电白县康尔美生物科技有限公司 | Syringe capable of repeatedly using drive device, and liquid storage device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |