CN100441246C - Tunnel film type sensitive blood-back vena needle - Google Patents

Tunnel film type sensitive blood-back vena needle Download PDF

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Publication number
CN100441246C
CN100441246C CNB2006100897008A CN200610089700A CN100441246C CN 100441246 C CN100441246 C CN 100441246C CN B2006100897008 A CNB2006100897008 A CN B2006100897008A CN 200610089700 A CN200610089700 A CN 200610089700A CN 100441246 C CN100441246 C CN 100441246C
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China
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blood
blood back
tunnel
elastica
pipeline
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Expired - Fee Related
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CNB2006100897008A
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CN101036811A (en
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贾宇东
秦京生
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BEIJING FORERUNNER TECHNICAL DEVELOPING Co Ltd
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Individual
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Abstract

A tube file type sensitive blood returning intravenous needle is characterized by including a blood returning tee (1), an elastic film (8), a protective cover (9), and an intravenous needle pipeline (3), wherein the blood returning tee (1) is fixedly with the intravenous needle pipeline (3) at the exit, a concave inward interface (13) arranged at the inlet, the side port is sealed by the elastic film (8), the blood returning tee (1) forms an independent whole structure with the intravenous needle (2) and the pipeline thereof. The middle of the blood returning tee (1) is a blood returning tube (18), and the side port is rectangle, while the transect is of tube shape. The elastic film (8) is blocked at the rectangle opening from the outside; the blood returning tube (18) and the elastic film (8) are combined to form a pipe, wherein the two copulaes are not fixed and sealed. The device realizes the fast and expedite fluid stable flow, and does not generate air stockpile problems and time resort, also due to adopting the film type elastic film induction blood vessel pressure, the more sensitive blood returning assistant judgment function is realized, meanwhile can be matched stochastically and flexibly or used independently.

Description

Tunnel film type sensitive blood-back vena needle
Technical field
The present invention relates to the disposable infusion set in the medical apparatus and instruments, be particularly related to a kind of tunnel film type sensitive blood-back vena needle, the blood back device of tunnel form and intravenous needle and pipeline are manufactured an integral body, can when preparing, transfusion make successfully in time that liquid is the quickest flows through pipeline and do not form problem such as stop the supple of gas or steam in eddy current and trapped air and the infusion process, the motility of product use and supporting multiformity have also been improved in addition, more sensitive blood back auxiliary judgment function when being implemented in simultaneously gravity transfusion preparation again, finish more accurately the active of the apparatus of tip position is judged, at utmost reduce artificial lacking experience and the interference of factor such as human vas condition difference or blood volume be low.
Technical background
Purpose of the present invention just provides a kind of tunnel film type sensitive blood-back vena needle, the blood back device of tunnel form and intravenous needle and subsequent infusion pipeline are manufactured an overall structure, make flow of liquid the shortest through the time of blood back device, do not form eddy current and trapped air, need not painstakingly note the problem of stopping the supple of gas or steam wherein, can unite use with any transfusion device again and also can use separately, improve motility that this product uses more sensitive blood back auxiliary judgment function when being implemented in simultaneously the gravity transfusion again.
Prior art comprise the number of patent application of my invention be the problem that exists in " directly membrane temperature type sensitive blood-return self-venting transfusion filter " design of 200510276096 for example: for example, under the transfusion condition of conventional application now, in the preparatory stage, the blood back cavity that has both in the filter that the blood back function is arranged is the cavity of an internal diameter greater than the infusion pipeline internal diameter, flow of liquid is through exist with the eddy current form herein, trapped gas is often arranged and be difficult to and get rid of, fixedly connected with the upstream infusion tube road owing to this device simultaneously, can not decompose selection neatly, cause use clinically unfavorable, in addition because blood back device and the design of other functional structures are as a whole, can only be that combination is fixing in use uses the flexible operating that can not separate.
Summary of the invention
Purpose of the present invention just provides a kind of tunnel film type sensitive blood-back vena needle, the design of the blood back cavity by tunnel type, can realize direct interference-free current stabilization and the fast and safely unobstructed needs of liquid in pipeline smoothly, can not produce fluid vortex and trapped gas and be difficult to problems such as eliminating, in addition, independently use by simple function and to have improved supporting motility of product and the independent autgmentability of using really, with the blood back flowing device design can realize conscientiously in the infusion flow adjuster downstream low pressure blood to the sensitivity effect of elastica (8) and more sensitivity realize sensitive blood-return auxiliary judgment puncture function reliably.
Technical scheme of the present invention is:
Comprise blood back threeway (1), elastica (8), protecting cover (9) and intravenous needle pipeline (3), wherein blood back threeway (1) outlet fixedly connected intravenous needle pipeline (3), import is provided with indent interface (13), the side mouth is sealed by elastica (8), blood back threeway (1) forms whole with intravenous needle pipeline (3) and intravenous needle (2), the position of blood back threeway (1) specifically is positioned at the terminal of intravenous needle pipeline (3) and forms an independently integral tube line structure with the intravenous needle pipeline is fixing, blood back threeway (1) middle part is blood back tunnel (18), its side opening is rectangular, the transverse section is the tunnel form, and elastica (8) is pasted from the outside and got lodged in rectangular aperture; Blood back tunnel (18) is encircled into pipeline with elastica (8), and both junction surfaces are unfixing, blow-by; Elastica (8) is fitted naturally with the blood back threeway inner top surface (19) that side opening neighboring, blood back tunnel (18) forms; The set indent interface (13) of blood back threeway (1) import is to meet National Standard GB/T1962.1 syringe, entry needle and other medical apparatus and instruments 6% tapering (Rule) cone joint first: general requirement " the female cone joint, the elastica (8) of blood back threeway (1) side mouth is the edge fastening extruding formation sealing state by the side mouth of protecting cover (9) edge and blood back threeway (1), a passage (10) is arranged on the protecting cover (9), be communicated with exhaust clearance (11) and atmosphere, at protecting cover (9) inner face air discharge duct (17) is arranged, prevent the stifled passage (10) of elastica (8) subsides, the inner face of the outside of elastica (8) and protecting cover (9) has exhaust clearance (11), elastica (8) inner face is directly in the face of intravenous needle pipeline (3) inner chamber, can respond to the pressure of the venous blood in the intravenous needle and amplify this pressure and act on the elastic film surface and make it to expand, realize increasing pipeline volume and the skirt that guides after venous backflow enters intravenous needle, thereby show the position of needle point;
Described blood back threeway (1) is that medical transparent plastic injection moulding forms.
Described elastica (8) is the medical latex manufacturing.
Described protecting cover (9) is a plastic material.
Structure of the present invention the is clear and definite concrete structure of blood back flowing device and basic part combination, and with intravenous needle applying unit as a whole, can make liquid finish quick unimpeded liquid current stabilization does not produce trapped gas through this blood back flowing device problem, finish the requirement of preparing and using safely and fast, and can separate with upstream and use and independent packing, also can with upstream transfusion device assembly packaging, thereby improved the motility of using, because the use of single structure can be finished the function that blood back is judged again better, be not subjected to the mutual restriction of other blocking factor, the sensitive blood back flowing device that adds the flat thin membrane type in addition at nearly intravenous needle place more improves the sensitivity that blood back reacts in the highland.
Description of drawings
Fig. 1 is a location layout sketch map of the present invention.
Fig. 2 is an axial end structural representation of the present invention.
Fig. 3 is a cross-sectional configuration sketch map of the present invention.
1. blood back threeways among the figure, 2. intravenous needle, 3. intravenous needle pipeline, 4 dropping funnels, 5. transfusion is responsible for, and 6. wears a bottle pin, 7. tube for transfusion joint, 8. elastica, 9. protecting cover, 10. steam vent, 11. exhaust clearances, female fittings in 13., 14. the intravenous needle pipe joint, 15. blood back threeway inlets, 16. blood back threeway liquid outlets, 17. air discharge duct, 18. blood back tunnels, 19. blood back threeway inner top surfaces.
The specific embodiment
Referring to Fig. 1, the basic structure layout of the embodiment of this technical scheme comprises the blood back threeway
(1), intravenous needle pipeline (3), intravenous needle (2), intravenous needle pipeline (3), dropping funnel (4), transfusion are responsible for (5), are worn a bottle pin (6) and tube for transfusion joint (7), wherein blood back threeway (1) and intravenous needle pipeline (3) and subsequent intravenous needle (2) constitute an overall structure, are responsible for (5) by interior female fitting (13) and transfusion again and are connected the purpose that realizes transfusion.
Referring to Fig. 2, this embodiment further sets forth the principal mode of blood back flowing device in each structure of axial end on a last sketch map basis, wherein blood back threeway (1) outlet fixedly connected intravenous needle pipeline (3), import are provided with indent interface (13), side mouth by elastica (8) sealing, and blood back threeway (1) forms whole with intravenous needle pipeline (3) and subsequent intravenous needle (2); Blood back threeway (1) specifically is positioned at the end of the intravenous needle pipeline (3) behind the intravenous needle (2) and is fixedly connected to form an independently integral tube line structure with intravenous needle pipeline (3), blood back threeway (1) middle part is blood back tunnel (18), its side opening is rectangular, the transverse section is the tunnel form, and elastica (8) is pasted from the outside and got lodged in rectangular aperture; Blood back tunnel (18) is encircled into pipeline with elastica (8), and both junction surfaces are unfixing, blow-by; Elastica (8) is fitted naturally with the blood back threeway inner top surface (19) that side opening neighboring, blood back tunnel (18) forms; The set indent interface (13) of blood back threeway (1) import is to meet National Standard GB/T1962.1 syringe, entry needle and other medical apparatus and instruments 6% tapering (Rule) cone joint first: general requirement " the female cone joint, the elastica (8) of blood back threeway (1) side mouth is to fasten the sealing state that extruding forms by the edge of the side mouth of protecting cover (9) edge and blood back threeway (1), a passage (10) is arranged on the protecting cover (9), be communicated with exhaust clearance (11) and atmosphere, at protecting cover (9) inner face air discharge duct (17) is arranged, prevent the stifled passage (10) of elastica (8) subsides, the inner face of the outside of elastica (8) and protecting cover (9) has exhaust clearance (11), and elastica (8) inner face is directly in the face of intravenous needle pipeline (3) inner chamber.
Referring to Fig. 3, this embodiment is the principal mode of further setting forth each structure that shows of blood back flowing device on the basis of Fig. 1 on the transverse section, what wherein clearly show is that the side opening in blood back tunnel (18) is to be reclined from the outside by elastica (8), the remainder of elastica (8) then abuts on the blood back threeway inner top surface (19), both are fixed bonding not, is can be isolating therebetween.
Sketch map structure below in conjunction with Fig. 1, Fig. 2 and Fig. 3 elaborates to 26S Proteasome Structure and Function of the present invention.
Sensitive blood back flowing device is positioned at the terminal of intravenous needle pipeline (3) and forms an independently integral tube line structure with the intravenous needle pipeline is fixing, can flowing through of quick unobstructed realization liquid in the use and trapped gas not, can be optionally before and after using plug together butt joint with different transfusion device main line, can be used as independently that product uses in addition, further improved motility and independence that product uses.
Because sensitive blood back flowing device needs directly to be communicated with the vein inner chamber in use, so this device design is in the downstream of infusion flow adjuster, can be in when closing at flow regulator, elastica (8) in the sensitive blood back flowing device can be sensed vein pressure and expand, because the area of film is more than 1000 times of needle point area of section, can amplify pressure and act on the surface of film, even if very little pressure also can form final very big pressure and act on the inner surface of film, cause the volumetrical expansion in the closed infusion pipeline and cause realizing in the skirt after venous backflow enters intravenous needle the vision response of blood back; The blood back flowing device indoor design is the tunnel form in addition, there is not unnecessary spatial design, guarantee that the tunnel internal diameter is consistent with the import and export internal diameter, the type of flow that ensures liquid is a current stabilization, thereby the eddy current of big cavity generation and the problem of trapped gas have been overcome, when the transfusion aerofluxus, since the moment in tunnel stage local pressure be no more than 2 centimeter water columns, tension force is arranged during elastica (8) prepackage, so elastica (8) can not opened, and make smooth and easy this position, tunnel of flowing through of liquid, therefore can realize the function of quick unimpeded current stabilization, can trapped gas, behind full of liquid in the pipeline, when carrying out vascular puncture, because aforesaid pressure action principle makes the liquid in the pipeline produce pressure to elastica (8), outwards expand simultaneously in compressing elastica (8), liquid can fill the effect of having played the blood back demonstration in the space that enters between elastica (8) and the blood back threeway inner top surface (19) again and more observantly venous pressure be made the more sensitive reaction of the very first time.
The advantage of this 26S Proteasome Structure and Function is as follows:
1, the design in blood back tunnel can realize liquid current stabilization process and can not produce the gas volume Deposit, realized the purpose of quicker unimpeded set-up procedure and safer transfusion, take into account simultaneously blood back The needs of structure.
2, form a whole absolute construction with intravenous needle, improved the flexible matching of using With independent wider scope of using.
3, because the most close intravenous needle of this structure and site of puncture, the blood back of flat thin membrane type is auxiliary When helping the venipuncture arbitration functions also further to improve puncture procedure to the sensitiveness of blood pressure With the stability of using.

Claims (4)

1, a kind of tunnel film type sensitive blood-back vena needle, it is characterized in that: comprise blood back threeway (1), elastica (8), protecting cover (9) and intravenous needle pipeline (3), wherein blood back threeway (1) outlet fixedly connected intravenous needle pipeline (3), import is provided with indent interface (13), the middle part is blood back tunnel (18), this blood back tunnel (18) design has side opening and is sealed by elastica (8), blood back threeway (1) forms the integral tube line structure with intravenous needle pipeline (3) and intravenous needle (2), the side opening in blood back tunnel (18) is rectangular, the transverse section is a tunnel-shaped, elastica (8) is pasted from the outside and is got lodged in rectangular aperture, and elastica (8) is fitted naturally with the blood back threeway inner top surface (19) that side opening neighboring, blood back tunnel (18) forms.
2, tunnel film type sensitive blood-back vena needle according to claim 1 is characterized in that: blood back tunnel (18) and elastica (8) are encircled into pipeline, and both junction surfaces are not fixed, not sealed.
3, tunnel film type sensitive blood-back vena needle according to claim 1 is characterized in that: the edge that the elastica (8) of blood back threeway (1) side opening is in by the side opening of protecting cover (9) edge and blood back threeway (1) fastens the sealing state that extruding forms.
4, tunnel film type sensitive blood-back vena needle according to claim 1 is characterized in that: between elastica (8) and the protecting cover (9) gapped (11), this clearance distance is 0.01 millimeter to 50 millimeters.
CNB2006100897008A 2006-07-12 2006-07-12 Tunnel film type sensitive blood-back vena needle Expired - Fee Related CN100441246C (en)

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CNB2006100897008A CN100441246C (en) 2006-07-12 2006-07-12 Tunnel film type sensitive blood-back vena needle

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Application Number Priority Date Filing Date Title
CNB2006100897008A CN100441246C (en) 2006-07-12 2006-07-12 Tunnel film type sensitive blood-back vena needle

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CN100441246C true CN100441246C (en) 2008-12-10

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102091378B (en) * 2011-02-16 2013-05-22 北京福尔安娜科技发展有限公司 Retaining needle capable of being closed by virtue of positive pressure and displaying blood back

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119819A1 (en) * 1983-03-14 1984-09-26 Japan Medical Supply Co., Ltd. Infusion apparatus
US4552552A (en) * 1982-02-16 1985-11-12 Fresenius Ag Pump system for use with dialysis and like apparatus
CN2226457Y (en) * 1995-08-15 1996-05-08 贾宇东 Enlarging volume decompression returned blood device
CN1080578C (en) * 1993-02-20 2002-03-13 贾宇东 Volume-expanding pressure-reducing blood return device
CN1657108A (en) * 2004-02-19 2005-08-24 陈志清 Membrane type sensitive back blood heating-magnetization filter
WO2005079886A2 (en) * 2004-02-13 2005-09-01 Mallinckrodt Inc. Keep vein open method and injector with keep vein open function

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552552A (en) * 1982-02-16 1985-11-12 Fresenius Ag Pump system for use with dialysis and like apparatus
EP0119819A1 (en) * 1983-03-14 1984-09-26 Japan Medical Supply Co., Ltd. Infusion apparatus
CN1080578C (en) * 1993-02-20 2002-03-13 贾宇东 Volume-expanding pressure-reducing blood return device
CN2226457Y (en) * 1995-08-15 1996-05-08 贾宇东 Enlarging volume decompression returned blood device
WO2005079886A2 (en) * 2004-02-13 2005-09-01 Mallinckrodt Inc. Keep vein open method and injector with keep vein open function
CN1657108A (en) * 2004-02-19 2005-08-24 陈志清 Membrane type sensitive back blood heating-magnetization filter

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