CN101015721A - Artery-vein catherter preventing blood outflow provided with blood sampling opening - Google Patents

Artery-vein catherter preventing blood outflow provided with blood sampling opening Download PDF

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Publication number
CN101015721A
CN101015721A CN 200610020296 CN200610020296A CN101015721A CN 101015721 A CN101015721 A CN 101015721A CN 200610020296 CN200610020296 CN 200610020296 CN 200610020296 A CN200610020296 A CN 200610020296A CN 101015721 A CN101015721 A CN 101015721A
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China
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blood
flexible glue
lamellar
conduit
blood drawing
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CN 200610020296
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Chinese (zh)
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董中新
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Individual
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Individual
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Priority to CN 200610020296 priority Critical patent/CN101015721A/en
Publication of CN101015721A publication Critical patent/CN101015721A/en
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Abstract

This invention relates to medicinal arteriovenous transfusion instrument, especially to an arteriovenous indwelling needle with haemospasia opening for preventing sanguis outflow and capable of indwelling in arteriovenous. It comprises sealing cap 1, needle tube holder 2, needle tube 3, conduit holder 4, and conduit 10 integrated with conduit holder. a mould cavity is provided at the central axis of the conduit holder 4 and suitable for front end of needle tube needle tube holder 2. A connected space is provided between mould cavity and conduit 10. The connected space is provided with a motive flexible soft gum. A connecting piece 8, supporting component 5 and haemospasia opening 9 is provided in the connected space with the supporting component 5 at its end. The instrument has the advantages of convinient operation and exsanguinates, no cross infection and use tabu.

Description

Can prevent the iv cannule of the band blood drawing mouth of blood outflow
(1) technical field: the present invention relates to a kind of medical apparatus and instruments of medical arteriovenous infusion medicinal liquid, especially a kind of iv cannule that prevents the band blood drawing mouth of blood outflow.
(2) background technology: at present, known iv cannule normally is made up of calparine cap, needle tubing, needle tubing seat, catheter block, conduit, sheath etc.During use, the needle tubing tip punctures the human body arteriovenous, utilizes needle point auxiliary, conduit punctures simultaneously and enters the human body arteriovenous, blood enters in the blood back cavity along needle interior wall, and operator see blood back, shows to puncture successfully, needle tubing is extracted arteriovenous, inlying catheter is retained in the arteriovenous, connects calparine cap occlusion catheter seat mouth again, or connect transfusion, blood exchange transfusion set's interface, infuse, transfuse blood, the common use of known iv cannule that Here it is.But, find that in use there are following serious problems in present known iv cannule, can't be resolved according to the information of the clinical reflection of medical treatment:
1: during use, puncture successfully, after operator see blood back, must be with left hand by tight arteriovenous, the right hand connects off-the-shelf transfusion device interface fast, so that infuse or transfuse blood, if this moment, operator moved unskilled or not by tight puncture place front end arteriovenous, blood outflow accident will take place, cause infecting or cross infection, simultaneously patient is caused psychological negative effect.
2: during use,, easily form blood and contact, form blood infection with air extracting needle tubing and during at infusion medicine (blood) liquid repeatedly, screwing off calparine cap from catheter block and repeatedly screw on again the calparine cap sealing duct seat process.
3: known iv cannule when closing to an end, must have the special messenger to nurse in transfusion (blood), and (blood) device interface of in time will infusing is extracted, and connects calparine cap occlusion catheter seat mouth.Otherwise, will cause that a large amount of backflow of blood feed back liquid (blood) pipe, even cause malpractice.
4: present known iv cannule need to extract patient blood if having simultaneously in infusion process, and medical personnel draw blood at just must the reuse syringe puncture other positions of patient, and this has increased the weight of patient's misery virtually.
5: after known iv cannule uses first, if need to keep somewhere, must mix calparine cap at the catheter block interface, add a certain amount of heparin liquid in calparine cap, prevent blood coagulation, this is present general way.But according to the medical science experience, some patient can not use heparin liquid, and this just means that these patients can not use iv cannule.
(3) summary of the invention: problem to be solved by this invention will provide a kind of processing ease, technology easily to guarantee, can not occur blood outflow exactly, can cross infection, and the iv cannule that does not need calparine cap can draw blood again simultaneously.
For addressing the above problem, technical solution of the present invention is as follows: a kind of iv cannule that prevents the band blood drawing mouth of blood outflow, comprise and seal medicated cap, needle tubing, the needle tubing seat, catheter block reaches and catheter block assembling all-in-one-piece conduit, the catheter block center is axially arranged with the die cavity that matches with needle tubing seat front end, be provided with connected space between die cavity and the conduit, it is characterized in that: be provided with a slice no-toxicity medical lamellar elasticity flexible glue in the described connected space, described lamellar elasticity flexible glue is movable up and down, be provided with a connectedness in the top, be provided with a support member in its lower end, be provided with the blood drawing mouth that a rubber stopper is blocked at the front end place of connected space.
As the further setting of the present invention: described connectedness axial centre has a through hole, and has the mutual disconnected boss of wire or wire nail shape by an end of lamellar elasticity flexible glue, so that during transfusion (blood), liquid can pass through from the gap between these boss; Described support member axial centre has a through hole, and is smooth flat or wire anchor ring by an end of lamellar elasticity flexible glue, and support member waist place is provided with an annular seal ring, is used for sealing.In the present invention, the material of described lamellar elasticity flexible glue is rubber preferably, and the surrounding edge shape can be an arbitrary shape, and preferably circular or square certainly, when producing assembling, needle tubing directly passes the center of lamellar elasticity flexible glue.In use, the puncture vessel success and extract needle tubing after, lamellar elasticity flexible glue is stayed in the connected space, simultaneously because the elasticity that lamellar elasticity flexible glue itself has, after needle tubing is extracted, lamellar elasticity flexible glue is not stayed hole by the place that needle tubing punctured, but recovered the plane original state, and be attached on the smooth flat or wire anchor ring of support member upper end, under the blood pressure effect that refluxes, the smooth flat or the wire anchor ring of lamellar elasticity flexible glue and support member upper end paste tightlyer, have further improved sealing property, so can prevent reliably that blood from outwards flowing backwards; During as need transfusions (blood), as long as the transfusion device interface is inserted catheter block, under the pressure of injection, liquid backs down lamellar elasticity flexible glue, making and floating to the lower surface that touch connectedness on the lamellar elasticity flexible glue is on the boss, and is provided with the gap between lamellar elasticity flexible glue surrounding edge and the catheter block inwall, so injection is just by above-mentioned gap and along gap between the boss of connectedness lower surface and the intermediary through hole of connectedness, enter conduit, further enter human body.The transfusion (blood) finish, pull out the transfusion device interface after, lamellar elasticity flexible glue is closed the intermediary through hole of support member automatically under the blood pressure effect.In addition, the sealing ring at support member waist place will seal between support member and the catheter block again, therefore can avoid the blood outflow that causes because of misoperation fully, can avoid cross infection, blood is enclosed in the catheter block front end, does not have the danger of blood outflow fully, also need not monitoring during transfusion; Draw blood as needing in the infusion process, only need the transfusion device interface is extracted, connect sealing medicated cap,, can draw blood the rubber stopper of the syringe insertion blood drawing mouth of band pin, the blood drawing extraction syringe needle that finishes, rubber stopper seals automatically by elasticity, pulls up and seals medicated cap, connects the transfusion device interface again, transfusion be can continue again, so just misery that patient repeatedly punctured and medical personnel's workload reduced widely.In addition, can prevent the iv cannule of the band blood drawing mouth of blood outflow, owing to there is not the danger of outflow, do not contact the generation blood coagulation with air so worry blood, therefore again do not need calparine cap, the substitute is a kind of common medicated cap that seals, when its role is just drawn blood occluded air and when keeping somewhere the confined bed mouth of pipe avoid the effect of outside contamination, thereby any patient all can use, and no longer has any use taboo.
The present invention will be further described below in conjunction with accompanying drawing, and provide specific embodiment.
(4) description of drawings: Fig. 1 is a specific embodiment of the invention schematic appearance;
Fig. 2 is a specific embodiment of the invention structure cutaway view;
State diagram when Fig. 3 infuses for the specific embodiment of the invention;
State diagram when Fig. 4 keeps somewhere for the specific embodiment of the invention;
Fig. 5 is a kind of embodiment axonometric chart of connectedness among the present invention;
Fig. 6 is the another kind of embodiment axonometric chart of connectedness among the present invention;
Fig. 7 is a specific embodiment of the invention STRUCTURE DECOMPOSITION sketch map.
(5) specific embodiment: as Fig. 1,2,3, shown in 4, can prevent the iv cannule of the band blood drawing mouth of blood outflow, comprise and seal medicated cap 1, needle tubing seat 2, needle tubing 3, catheter block 4, blood drawing mouthfuls 9 and be fixed in the conduit 10 of catheter block 4 front ends, catheter block 4 centers are axially arranged with the die cavity that matches with needle tubing seat 2, be provided with connected space between die cavity and the conduit 10, be provided with a slice lamellar elasticity flexible glue 7 in this connected space, a connectedness 8 with catheter block 4 inwall interference fit is equipped with in the top of described lamellar elasticity flexible glue 7, and the below is provided with a support member 5 with catheter block 4 respective inner walls interference fit.Described lamellar elasticity flexible glue 7 is movable up and down, its surrounding edge shape can be an arbitrary shape, preferably circular or square, so that processing, its upper and lower surface is the plane, is gapped between its surrounding edge and the catheter block respective inner walls so that when transfusion liquid can pass through, its material is a no-toxicity medical elasticity flexible glue, rubber preferably is because rubber has high resiliency, after needle tubing 3 is extracted during use, the place that described lamellar elasticity flexible glue 7 central authorities were punctured by needle tubing 3, restore to the original state rapidly, do not stay any vestige, that is to say, after needle tubing 3 was extracted, blood can not leak out from the place that needle tubing 3 punctured.Described connectedness 8 has mutual disconnected wire boss 15 (see figure 5)s or wire nail shape boss 16 (see figure 6)s by an end of lamellar elasticity flexible glue, owing to be not communicated with mutually between these boss, so during transfusion (blood), liquid can pass through from the gap between these boss, connectedness 8 axial centre are a through hole 14 so that when transfusion liquid can pass through.Described support member 5 waists are provided with a sealing ring 6, support member 5 and sealing ring 6 are assembled into periphery and catheter block 4 respective inner walls interference fit after the one, prevent that liquid from oozing out, support member 5 axial centre are a through hole 13, the passage of liquid during as transfusion, support member 5 upper ends are smooth flat (contacting with 7 of lamellar elasticity flexible glues during sealing) or wire anchor ring (contacting with lamellar elasticity flexible glue 7 lines during sealing).During transfusion (blood), under the pressure of injection, liquid backs down lamellar elasticity flexible glue 7, so the gap around through hole 13 and through hole 14 and the lamellar elasticity flexible glue has formed fluid passage 11 (see figure 3)s, transfusion (blood) is smooth; Transfusion (blood) finishes, and unplugs transfusion (blood) joint 12, and lamellar elasticity flexible glue 7 is close to the smooth flat or the wire anchor ring of support member 5 upper ends under the blood pressure effect, close through hole 13 automatically, thereby realizes reliably preventing the blood outflow.As needing blood drawing, only need transfusion (blood) joint 12 is extracted in the infusion process, connect sealing medicated cap 1, the hemospast of band pin is inserted rubber stopper 9, and blood drawing finishes, and rubber stopper 9 seals automatically, unplug and seal medicated cap 1, connect transfusion (blood) joint 12, can continue transfusion (blood) again.

Claims (6)

1, can prevent the iv cannule of the band blood drawing mouth of blood outflow, comprise and seal medicated cap (1), needle tubing seat (2), needle tubing (3), catheter block (4), be fixed in the conduit (10) of catheter block (4) front end, blood drawing mouthful (9), catheter block (4) center is axially arranged with the die cavity that matches with needle tubing seat (2) front end, die cavity and conduit are provided with connected space between (10), it is characterized in that: be provided with the active lamellar elasticity of a slice flexible glue (7) in the described connected space, lamellar elasticity flexible glue (7) top is provided with a connectedness (8) that fluid passage is arranged, the below is provided with a support member that can allow liquid pass through or seal (5), is provided with a blood drawing mouth (9) with the plug sealing between connected space and the conduit (10).
2, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1, it is characterized in that: the upper and lower surface of described lamellar elasticity flexible glue (7) is the plane, and surrounding edge can be arbitrary shape.
3, according to claim 1, the 2 described iv cannules that prevent the band blood drawing mouth of blood outflow, it is characterized in that: the activity space interval that has feed shape elasticity flexible glue (7) to open and close up and down between connectedness (8) and the support member (5).
4, according to claim 1,2, the 3 described iv cannules that prevent the band blood drawing mouth of blood outflow, it is characterized in that: on the lateral surface of support member (5), be provided with annular seal ring (6).
5, according to claim 1,2,3, the 4 described iv cannules that prevent the band blood drawing mouth of blood outflow, it is characterized in that: the upper end of support member (5) is smooth flat or wire anchor ring.
6, according to claim 1,2, the 3 described iv cannules that prevent the band blood drawing mouth of blood outflow, it is characterized in that: connectedness (8) has disconnected boss (15 or 16) by on the end face of lamellar elasticity flexible glue (7), and its shape can be arbitrary shape.
CN 200610020296 2006-02-12 2006-02-12 Artery-vein catherter preventing blood outflow provided with blood sampling opening Pending CN101015721A (en)

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Application Number Priority Date Filing Date Title
CN 200610020296 CN101015721A (en) 2006-02-12 2006-02-12 Artery-vein catherter preventing blood outflow provided with blood sampling opening

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CN101015721A true CN101015721A (en) 2007-08-15

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103961781A (en) * 2014-05-08 2014-08-06 中国人民解放军第三军医大学第一附属医院 Air embolism resistant type central venous catheter
CN104043154A (en) * 2014-06-30 2014-09-17 天津哈娜好医材有限公司 Dialysis remaining needle with switch
WO2015010222A1 (en) * 2013-07-25 2015-01-29 Xie Shigeng Self-sealing anti-thrombotic venous indwelling needle and use method thereof
CN104826195A (en) * 2015-05-12 2015-08-12 黄彦召 Novel straight remaining needle
CN105833389A (en) * 2016-05-20 2016-08-10 苏州林华医疗器械股份有限公司 Pressure-resistance low-resistance insulated plug and venous indwelling needle
CN106974663A (en) * 2017-04-12 2017-07-25 侯颖萍 Multi-functional remaining needle
CN107970501A (en) * 2016-10-25 2018-05-01 袁娜 A kind of blood sampling connector and blood-taking device based on venous detaining needle
CN108042907A (en) * 2009-02-11 2018-05-18 贝克顿·迪金森公司 Vascular access device
CN109481840A (en) * 2018-12-21 2019-03-19 锦州诺德医疗器械科技有限公司 A kind of calparine cap
CN115154752A (en) * 2022-06-30 2022-10-11 上海普益医疗器械股份有限公司 Visible blood return remaining needle with multiple observation positions

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108042907A (en) * 2009-02-11 2018-05-18 贝克顿·迪金森公司 Vascular access device
WO2015010222A1 (en) * 2013-07-25 2015-01-29 Xie Shigeng Self-sealing anti-thrombotic venous indwelling needle and use method thereof
CN103961781A (en) * 2014-05-08 2014-08-06 中国人民解放军第三军医大学第一附属医院 Air embolism resistant type central venous catheter
CN104043154A (en) * 2014-06-30 2014-09-17 天津哈娜好医材有限公司 Dialysis remaining needle with switch
CN104043154B (en) * 2014-06-30 2016-01-27 天津哈娜好医材有限公司 A kind of dialysis remaining needle with switch
CN104826195A (en) * 2015-05-12 2015-08-12 黄彦召 Novel straight remaining needle
CN105833389A (en) * 2016-05-20 2016-08-10 苏州林华医疗器械股份有限公司 Pressure-resistance low-resistance insulated plug and venous indwelling needle
CN107970501A (en) * 2016-10-25 2018-05-01 袁娜 A kind of blood sampling connector and blood-taking device based on venous detaining needle
CN106974663A (en) * 2017-04-12 2017-07-25 侯颖萍 Multi-functional remaining needle
CN109481840A (en) * 2018-12-21 2019-03-19 锦州诺德医疗器械科技有限公司 A kind of calparine cap
CN115154752A (en) * 2022-06-30 2022-10-11 上海普益医疗器械股份有限公司 Visible blood return remaining needle with multiple observation positions

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