CN101502687B - Monotubular double-chamber syringe needle cylinder - Google Patents
Monotubular double-chamber syringe needle cylinder Download PDFInfo
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- CN101502687B CN101502687B CN2008100652847A CN200810065284A CN101502687B CN 101502687 B CN101502687 B CN 101502687B CN 2008100652847 A CN2008100652847 A CN 2008100652847A CN 200810065284 A CN200810065284 A CN 200810065284A CN 101502687 B CN101502687 B CN 101502687B
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Abstract
The invention provides a single-cylinder double-chamber injector needle cylinder; the needle cylinder is provided with two pistons which divide the needle cylinder into a front chamber and a back chamber; the two pistons are connected with each other by a flexible connecting piece; the front chamber piston is provided with a through hole and a sealing device, thus realizing double drug administration of CT and MR contrast agent and physiological saline; remaining contrast agent in the cylinder is injected into human body by a physiological saline washing pipe and enters vein after being driven, so that the contrast agent reaches the target organ rapidly, thus increasing contrast of pathological changes with surrounding tissues and improving checkout of the pathological changes; meanwhile, blood supply information of nidus is increased, which facilitates diagnosis and differential diagnosis and increases certainty factor of diagnosis by the doctors; when CT and MR angiogram is carried out, contrast between the blood vessel and surrounding tissues is increased, which improves the angiogram effect; perfusion imaging is carried out on CT and MR, so that the contrast agent which enters the targeted organ has more constant rate and more accurate data is obtained; on the basis, more abundant information is expected to be obtained with the same amount of contrast agent used or the use amount of the contrast agent is expected to be reduced.
Description
Technical field
The present invention relates to medical syringe field, especially relate to Monotubular double-chamber syringe needle cylinder.
Background technology
At present, CT and MR check needs vein group to inject contrast medium, but enhanced ct scans and improve focus detect and assist the etiologic diagnosis effect, focus can be obtained or/and organ perfusion information with aspect continuous sweep after injecting contrast medium by vein group simultaneously, be CT and MR Perfusion Imaging, can also go non-invasive CT and MR angiography in addition.No matter be conventional contrast enhanced ct scans, still Perfusion Imaging and CT and MR angiography all require contrast medium to enter the blood of human body circulation with certain speed and amount, when particularly going CT and MR blood vessel imaging or Perfusion Imaging, strict more to the requirement of the speed of administration and amount.At present, realize by automatic injector mainly clinically that medicine-feeding rate is generally 3～5ml/s, amount does not wait from several milliliters to more than 100 milliliters.Because will move bed in the CT scan process, MR finishes in scanning holes inner magnet central authorities, all need long connection tube.During the monotubular administration, when finishing, injection still have several milliliters of contrast medium not enter human body in the connection tube, the contrast medium that later stage while enters human body lacks follow-up thrust, mainly rely on the passive arrival target organ of blood circulation, speed is reduced greatly, do not reach the scanning technique requirement, particularly in MR Perfusion Imaging process, the administration total amount often is several milliliters, therefore residual dose is bigger to the result of study influence in the connection tube, in scanning process, the medicine that the later stage enters human body shortage thrust also has considerable influence to imaging effect.For addressing the above problem, adopt bitubular administration clinically, be about to automatic injector and be designed to bitubular connection, wherein one is used for pushing away contrast medium, and another tube is used for pushing away the normal saline flushing connection tube, will remain in the interior contrast medium of connection tube and rush in human body and push target organ to.Though it is residual and enter the follow-up unable problem of human body contrast medium latter stage that bitubular administration solves in the connection tube contrast medium, but the bitubular increases patient economy burden, and waste resource and increase environmental pollution, need purchase bitubular automatic injector again to purchasing monotubular syringe medical institutions in early days simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to bring the problem of the financial burden and the wasting of resources at syringe of the prior art to the patient, and the Monotubular double-chamber syringe needle cylinder of the low and environmental protection of a kind of cost is provided.
For achieving the above object, the invention provides a kind of Monotubular double-chamber syringe needle cylinder, it comprises syringe main body and syringe, the top of this syringe main body is provided with medicine outlet, also include piston in the described syringe, described piston is provided with two, these two pistons are divided into cup and chamber, back with syringe, described two-piston links together by soft connector, described cup piston is provided with through hole and sealing device, wherein: described sealing device is at the cup piston interlayer to be set, be provided with valve with holes in this interlayer, piston edge one side is provided with the inclined-plane, and another example is provided with resetting means, described syringe bottom is provided with projection, and this projection is corresponding with described inclined-plane.
Described sealing device is arranged in the through hole, but the sealing device is the material of repeated localised puncture, and described syringe medicine outlet is provided with corresponding and to the inclined-plane pin of inner process band side opening with sealing device.
The present invention also provides a kind of injecting method of Monotubular double-chamber syringe needle cylinder, and it comprises the following steps:
(1) syringe is connected with syringe, pushes two-piston to the syringe top after the aerofluxus and by the pushing syringe connecting rod;
(2) the chamber piston retreated after the syringe connecting rod retreated pulling, opened sealing device, and normal saline enters into the chamber, back from the through hole of cup piston;
(3) sealing device cuts out, spur the syringe connecting rod again and retreat, contrast medium enters into cup by the syringe outlet;
(4) pushing syringe connecting rod is injected the contrast medium of cup by medicine outlet;
(5) open sealing device, again the normal saline of chamber, back is passed through the through hole arrival syringe medicine outlet of cup piston.
In described (2) and (5) step, opening sealing device is by syringe outlet projection one-way cock to be backed down; In described (3) step sealing device cutting out is that the cup piston is closed one-way cock away from the projection of syringe medicine outlet when filling with normal saline in the chamber, back.
In described (2) and (5) step, open sealing device and be by syringe base projections tube squeezing valve inclined-plane the hole on the valve is communicated with through hole on the cup piston; Sealing device cuts out in described (3) step is by hole and the through hole on the cup piston on the valve are disconnected.
In described (2) and (5) step, open sealing device and be inclined-plane pin by the syringe medicine outlet and pass the sealing device that can pierce through the chamber, back is communicated with medicine outlet; In described (3) step close sealing device be with the cup piston away from medicine outlet after, described inclined-plane pin makes the hole closure of sealing device away from the sealing device of cup piston.
Compared with prior art, the invention provides a kind of Monotubular double-chamber syringe needle cylinder, by two pistons are set in syringe, these two pistons are divided into cup and chamber, back with syringe, at the cup piston through hole and sealing device are set, thereby realize the two administrations of CT and MR contrast medium and normal saline, residue contrast medium in the connection tube is injected human body and drive laggardly to go into the vein contrast medium and reach target organ fast by the normal saline washing pipe, increase the contrast of pathological changes and surrounding tissue, improve detecting of pathological changes; Increase focus blood simultaneously for information, be beneficial to the certainty factor of diagnosis and Differential Diagnosis and enhancing diagnosis; When CT and MR angiography, contrast between increase blood vessel and surrounding tissue, make the angiography effect better; In CT and MR Perfusion Imaging,, used contrast medium make the result more accurate because arriving target organ with relative constant rate of speed.The present invention also can reduce the use amount of injector syringe, is expected to reduce the contrast medium consumption simultaneously, reduces patient economy burden, reduce the wasting of resources and environmental pollution, of the present invention simple in structure, be easy to make, do not need the monotubular automatic injector is done any change, promptly can use.
Description of drawings
Fig. 1 is the cross-sectional view before the embodiment of the invention 1 is inhaled medicine.
Fig. 2 is the cross-sectional view after chamber, the embodiment of the invention 1 back is full of normal saline.
The cup of Fig. 3 embodiment of the invention 1 and chamber, back are full of the cross-sectional view behind normal saline and the contrast medium.
Fig. 4 is the cross-sectional view after the back chamber of the embodiment of the invention 2 is full of normal saline.
Fig. 5 is the cross-sectional view after the invention process row 2 cups and chamber, back are full of normal saline and contrast medium.
Fig. 6 is the cross-sectional view after the back chamber of the embodiment of the invention 3 is full of normal saline.
Fig. 7 is the cross-sectional view after the invention process row 3 cups and chamber, back are full of normal saline and contrast medium.
The specific embodiment
Embodiment 1
As shown in Figure 1, embodiments of the invention provide a kind of Monotubular double-chamber syringe needle cylinder, it comprises syringe main body 1 and syringe (not marking among the figure), the top of this syringe main body 1 is provided with medicine outlet 5, also include piston 21 and 22 in the described syringe 1, these two pistons 21 and 22 are divided into cup 12 and chamber 11, back with syringe 1, and described cup 12 pistons 22 are provided with through hole 4 and sealing device 6.The present invention is by being provided with two pistons 21 and 22 in syringe 1, syringe 1 is divided into two chambers, thereby realize the two administrations of CT and MR contrast medium and normal saline, by the normal saline washing pipe with drive laggardly to go into the vein contrast medium and reach target organ fast, increase the contrast of pathological changes and surrounding tissue, improve detecting of pathological changes.
As Figure 1-3, the described sealing device 6 of the embodiment of the invention is on described through hole 4 one-way cock to be set, and described syringe 1 medicine outlet 5 is provided with the projection 7 towards cup 12.Two pistons 21 of the present invention and 22 are to link together by soft connector 3, and the length of soft connector 3 can be provided with arbitrarily, decide according to chamber, back 11 needed capacity.
As Figure 1-3, the injecting method of the described Monotubular double-chamber syringe needle cylinder of embodiments of the invention, it comprises the following steps:
(1) syringe 1 is connected with syringe, after the aerofluxus and two- piston 21 and 22 is pushed to the top of syringe 1 by the pushing syringe connecting rod;
(2) chamber 11 pistons 21 retreated after the syringe connecting rod retreated pulling, opened sealing device 6, and normal saline enters into chamber 11, back from the through hole of medicine outlet projection 7 cups 12 pistons 22;
(3) sealing device 6 cuts out, spur the syringe connecting rod again and retreat, contrast medium enters into cup 12 by syringe 1 medicine outlet 5;
(4) pushing syringe connecting rod is injected the contrast medium of cup 12 by medicine outlet;
(5) open sealing device 6, again the normal saline of chamber 11, back is injected by through hole 4 arrival syringes 1 medicine outlet 5 of cup 12 pistons 22.
In the embodiments of the invention injecting method, described syringe is preferably selected automatic injector for use, the connecting rod of automatic injector is connected together with chamber, back 11 pistons 21, automatic injector is with after syringe 1 is connected, at first aerofluxus, connecting rod promotes two pistons 21 and 22 to tip motions, when outreaching, the projection 7 of described syringe 1 medicine outlet 5 is backed down sealing device one-way cock 6, and described projection 7 is that give prominence to cylindric is good, and described normal saline can enter into chamber 11, back by medicine outlet 5, when soft connector 3 is stretching, the normal saline of back chamber 11 is full of, and according to the back indoor bubble that whether has, after the aerofluxus chamber, back is full of once more.Because soft connector 3 is straightened, withdraw the membership behind the automatic injector connecting rod cup 12 pistons 22 are pulled back, the piston 22 of cup 12 leaves the medicine outlet 5 of syringe 1, and the one-way cock of sealing device 6 also leaves the projection 7 of medicine outlet 5, thereby chamber 11, back and through hole 4 and cup 12 sealings are disconnected; Syringe 1 medicine outlet 5 is moved to the contrast medium medicine bottle, and back chamber 11 pistons 21 move under the pulling of syringe pull bar backward, can spur cup 12 pistons 22 and move backward, are filled contrast medium at cup 12.After finishing the suction medicine, also can be according to whether there being bubble to carry out aerofluxus in the cup 12, during administration, the reach of automatic injector connecting rod promotes two pistons 21 and 22 and moves forward, and contrast medium is injected into human body in the cup 12, when contrast medium injection in the cup 12 is intact, the projection 7 of medicine outlet 5 is backed down the one-way cock of sealing device 6 again, chamber, back 12 medicine outlets 5 are connected, and the connecting rod that continues reach promotes back piston 21 reaches, and normal saline is injected human body.
Embodiment 2
Present embodiment will be illustrated with the different piece of embodiment 1, and same section repeats no more:
Shown in Fig. 4-5, the described sealing device 8 of embodiments of the invention is at cup 12 pistons 22 interlayer 221 to be set, be provided with holes 81 sealed valve 8 in this interlayer 221, described piston 8 is set to the inclined-plane with the end that cup 12 pistons 22 edges are connected, described valve 8 other ends are provided with resetting means 84, for example adopt back-moving spring.Described cup 12 pistons 22 stay steam vent 82 towards cup 12 sides, described syringe 1 bottom is provided with projection 83, this projection 83 is corresponding with described inclined-plane, thereby inclined-plane driving device that can be by projection 83 tube squeezing valves 8 makes the hole 81 on the sealed valve 8 be connected or disconnection mutually with through hole 4 on cup 12 pistons 22.Syringe of the present invention 1 bottom is provided with projection 83 and is column or stepped.
The concrete injecting method of present embodiment is as follows:
At first with syringe 1 with after automatic injector is connected, aerofluxus then, connecting rod promotes two pistons 21 and 22 to tip motions, when outreaching, 83 extruding of syringe projection are arranged on the inclined-plane of the valve 8 of cup 12 pistons 22, sealed valve 8 is passed, hole 81 on the sealed valve 8 is connected with through hole 4 on cup 12 pistons 22, thereby medicine outlet 5 is communicated with chamber 11, back, the medicine bottle that medicine outlet 5 can be moved on to normal saline begins to suck normal saline, the retreating and only can spur afterwards that chamber 11 pistons 21 retreat of automatic injector connecting rod this moment, suck normal saline and enter chamber 11, back, when the normal saline suction volume reaches chamber, back 11 heap(ed) capacities, connecting two-piston flexible connecting member 3 is straightened, can suspend the suction medicine, and can be according to whether having bubble to carry out aerofluxus in the chamber 11, back, can continue to inhale normal saline after the aerofluxus, after chamber 11 is full of after inciting somebody to action, move behind chamber, connecting rod pulling back 11 pistons 21 that move after the continuation, by moving behind stretching soft connection 3 drive cups 12 pistons 22, cup 12 pistons 22 leave syringe 1 base projections 83, and resetting means 84 promotion sealed valves 8 reset and seal circular hole 81 on cup 12 pistons 22; Again medicine outlet 5 is moved to the medicine bottle of contrast medium, continue to pull back the syringe connecting rod again, thereby pulling cup 12 pistons 22 move backward, to be filled contrast medium in the cup 12, in cup piston 22 interlayers a small amount of gas can through pore 82 overflow suck normal saline and contrast medium after, earlier contrast medium injection is gone into human body, at this moment, the piston 22 of cup 12 arrives medicine outlet 5 places, the projection 83 of syringe 1 bottom is the inclined-plane driving device of tube squeezing valve 8 once more, hole 81 on the sealed valve 8 is connected with through hole 4 on the piston 22, medicine outlet 5 and chamber 11, the back pushing syringe connecting rod again that communicates, 11 pistons, 21 reaches of back chamber reach normal saline in the chamber 11, back at medicine outlet 5 by chamber, back 11 pistons and inject.
Embodiment 3
Present embodiment will be illustrated with the different piece of embodiment 1, and same section repeats no more:
Shown in Fig. 6-7, the described sealing device 9 of present embodiment is arranged in the through hole 4, but sealing device 9 is the material of repeated localised puncture, and it is good adopting rubber, and described syringe 1 medicine outlet 5 is provided with corresponding and to the inclined-plane pin 52 of inner process band side opening 51 with sealing device 9.But the material of repeated localised puncture of the present invention back bevel pin 52 when puncture communicates with chamber 11, back, and medicine outlet 5 is connected with chamber 11, back, after extracting inclined-plane pin 52, and the hole formation hermetically-sealed construction closed together naturally after this puncture.
The embodiments of the invention injecting method is as follows:
Present embodiment be at first with syringe 1 with after automatic injector is connected, aerofluxus then, connecting rod promotes two pistons 21 and 22 to tip motions, when outreaching, but sealing device 9 of the present invention is the elastomeric material of repeated localised puncture, with the punctured elastomeric material of sealing device 9 of the inclined-plane pin 52 of syringe 1 top medicine outlet 5 band side openings 51, thereby medicine outlet communicates with chamber 11, back, the retreating and only can spur afterwards that chamber 11 pistons 21 retreat of automatic injector connecting rod this moment, suck normal saline and enter chamber 11, back, when the normal saline suction volume reaches chamber, back 11 heap(ed) capacities, connect two-piston flexible connecting member 3 and be straightened, can suspend the suction medicine, and can be according to whether having bubble to carry out aerofluxus in the chamber 11, back, can continue to inhale normal saline after the aerofluxus, chamber 11, back is full of; Cup 12 pistons 22 leave inclined-plane pin 52 under the pulling of stretching soft connection 3, sealing device 9 in cup 12 pistons 22 is 11 paths of sealing cup 12 and chamber, back automatically, pull back the syringe connecting rod again, the piston 21 that can drive chamber 11, back retreats, at this moment, be straightened owing to connect two-piston flexible connecting member 3, thereby the piston 22 that drives cup 12 retreats, medicine outlet 5 is connected with contrast medium, begins to inhale contrast medium; During administration, the reach of automatic injector connecting rod promotes two piston forward and moves, contrast medium is injected into human body in the cup, and when contrast medium had pushed away in the cup 12, cup 12 pistons 22 arrived syringe 1 top, the inclined-plane pin 52 puncture through seal devices 9 of the medicine outlet 5 of syringe 1, in piercing process, the side opening 51 of inclined-plane pin 52 guarantees medicine in the cup 12 has been annotated fully as passage, and the cup 12 pistons 22 abundant tops that arrive syringe 1, medicine outlet 5 communicates with chamber 11, back; After this continue the pushing syringe connecting rod, thereby promote 11 pistons, 21 reaches of chamber, back, normal saline is injected human body.
In the above embodiment of the present invention, described through hole 4 can be arranged at the center of cup 12 pistons 22, also can be arranged at other position, decides according to user's needs.The present invention is the bullet structure with described cup 12 pistons 22 towards medicine outlet 5 parts, thereby more laborsaving when two pistons of pushing.
The above only is preferred embodiment of the present invention, in order to restriction invention, all in invention spirit and principle within done any modification, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. Monotubular double-chamber syringe needle cylinder, it comprises syringe main body and syringe, the top of this syringe main body is provided with medicine outlet, also include piston in the described syringe, described piston is provided with two, these two pistons are divided into cup and chamber, back with syringe, described two-piston links together by soft connector, described cup piston is provided with through hole and sealing device, it is characterized in that: described sealing device is at the cup piston interlayer to be set, and is provided with valve with holes in this interlayer, piston edge one side is provided with the inclined-plane, opposite side is provided with resetting means, and described syringe bottom is provided with projection, and this projection is corresponding with described inclined-plane.
2. Monotubular double-chamber syringe needle cylinder according to claim 1, it is characterized in that: described sealing device is arranged in the through hole, but the sealing device is the material of repeated localised puncture, and described syringe medicine outlet is provided with corresponding and to the inclined-plane pin of inner process band side opening with sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100652847A CN101502687B (en) | 2008-02-04 | 2008-02-04 | Monotubular double-chamber syringe needle cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100652847A CN101502687B (en) | 2008-02-04 | 2008-02-04 | Monotubular double-chamber syringe needle cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101502687A CN101502687A (en) | 2009-08-12 |
| CN101502687B true CN101502687B (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100652847A Expired - Fee Related CN101502687B (en) | 2008-02-04 | 2008-02-04 | Monotubular double-chamber syringe needle cylinder |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104800952A (en) * | 2015-04-23 | 2015-07-29 | 山东威高集团医用高分子制品股份有限公司 | Pre-washing type washing tube injector |
| CN108578833A (en) * | 2018-04-03 | 2018-09-28 | 复旦大学附属中山医院 | A kind of injection device |
| CN109771744A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | A kind of intravenously administrable and washing pipe integral type syringe |
| CN109771743A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | A kind of administration of separately-loaded intravenous injection and washing pipe integral type syringe |
| CN111703033B (en) * | 2020-06-10 | 2022-02-11 | 常州大学 | Filling material injection molding equipment and injection molding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228065B1 (en) * | 1994-02-15 | 2001-05-08 | Lawrence A. Lynn | Displacement activated medical check valve |
| CN1586644A (en) * | 2004-07-30 | 2005-03-02 | 赵福元 | Needle tube capable of injecting two kinds of medicine liquids |
| CN1671428A (en) * | 2002-08-08 | 2005-09-21 | 株式会社根本杏林堂 | Medicine liquid injection device for injecting plural kinds of medicine liquid without mixing them |
-
2008
- 2008-02-04 CN CN2008100652847A patent/CN101502687B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228065B1 (en) * | 1994-02-15 | 2001-05-08 | Lawrence A. Lynn | Displacement activated medical check valve |
| CN1671428A (en) * | 2002-08-08 | 2005-09-21 | 株式会社根本杏林堂 | Medicine liquid injection device for injecting plural kinds of medicine liquid without mixing them |
| CN1586644A (en) * | 2004-07-30 | 2005-03-02 | 赵福元 | Needle tube capable of injecting two kinds of medicine liquids |
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| CN101502687A (en) | 2009-08-12 |
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Granted publication date: 20110504 Termination date: 20130204 |