CN101912664A - Disposable positive pressure joint - Google Patents

Disposable positive pressure joint Download PDF

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Publication number
CN101912664A
CN101912664A CN2010101801028A CN201010180102A CN101912664A CN 101912664 A CN101912664 A CN 101912664A CN 2010101801028 A CN2010101801028 A CN 2010101801028A CN 201010180102 A CN201010180102 A CN 201010180102A CN 101912664 A CN101912664 A CN 101912664A
Authority
CN
China
Prior art keywords
joint
movable core
core bar
female
positive pressure
Prior art date
Application number
CN2010101801028A
Other languages
Chinese (zh)
Inventor
文智彬
Original Assignee
成都普什医药塑料包装有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 成都普什医药塑料包装有限公司 filed Critical 成都普什医药塑料包装有限公司
Priority to CN2010101801028A priority Critical patent/CN101912664A/en
Publication of CN101912664A publication Critical patent/CN101912664A/en

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Abstract

The invention discloses a disposable positive pressure joint, which aims to effectively prevent blood from flowing back into a remaining needle so as to avoid thrombosis. The disposable positive pressure joint comprises a positive end joint (10) and a negative end joint (20) which are integrally assembled, and a movable core bar (30) which is arranged inside the negative end joint (20). The movable core bar (30) is provided with a neck (31) and a middle lug boss (32) wherein the neck (31) forms a seal with an inner wall of an upper cavity (21) of the negative end joint (20); the middle lug boss (32) forms a seal with an inner wall of a middle cavity (22) of the negative end joint (20); and a transverse passage (35) formed in the neck (31) is communicated with a longitudinal passage (34) which leads to the bottom end of the movable core bar (30). An elastic member (40) which acts on the middle lug boss (32) of the movable core bar (30) is arranged inside a lower cavity (23) of the negative end joint (20); an exhaust passage (23a) is formed on an inner wall of the elastic member (40); and the positive end joint (10) is provided with a longitudinal through hole (11) in which the movable core bar (30) can be inserted.

Description

Disposable use positive pressure connector
Technical field
The present invention relates to medical apparatus and instruments, particularly a kind of positive pressure connector that can prevent that in transfusion blood from refluxing.
Background technology
Along with improving constantly of nursing technique, the continual renovation of medical supplies, remaining needle has been safest Centesis instrument by world health organisation recommendations.It is easy and simple to handle, can reduce repeated localised puncture, protects blood vessel and alleviate patient's misery, makes things convenient for clinical application and emergency rescue, has alleviated the nurse job amount, now has been widely used in clinical.But some new problems have appearred again in venous detaining needle in clinical position,, repeated multiple times washing pipe blocked, tube sealing, extruding etc. as remaining needle, both increase nursing work load and consumptive material, also increased the probability that phlebitic incidence rate and nursing staff's accidental needle sticks are hindered.
In order to address the above problem, people have invented the Needleless seal transfusion system and have carried out venous transfusion, this system has easy to use, simple to operate, the preclude blood sexually transmitted disease, reduce pipe obstruction, need not syringe needle connects, the advantage that 100% preventive injection is stabbed, its unique Interface design has increased advantages such as safety providing simple and direct access way to reduce contamination of heavy simultaneously, has both significantly reduced nurse's workload, many time has been left for the patient, reduced the nurse again in operation by the danger of blood contamination.Therefore the Needleless seal transfusion system value gets clinically and widelys popularize.
In existing Needleless seal transfusion system, when transfusion finishes when pulling down the joint of infusion set, because the effect of negative pressure can make blood be back in the inlying catheter, immobilising blood solidifies the formation thrombosis easily, cause the obstruction of inlying catheter, next transfusion can't be carried out.
Summary of the invention
Technical problem to be solved by this invention provides a kind of disposable use positive pressure connector, can prevent effectively that blood is back in the remaining needle, avoids forming thrombosis.
The technical solution adopted for the present invention to solve the technical problems is: disposable use positive pressure connector of the present invention is characterized in that: it comprises male end joint, the female end joint that is assembled into one, and is installed in the movable core bar in the female end joint; Movable core bar have with female end joint top in cavity wall form the cervical region of sealing, form the middle part boss of sealing with cavity wall in the female end joint middle part, be arranged on the interconnection of cervical region and communicate with vertical passage towards movable core bar bottom; Be provided with the elastic component that acts on movable core bar middle part boss in the female end joint lower lumen, offer the exhaust passage on its inwall; The male end joint has can be for the longitudinal hole of movable core bar insertion.
The invention has the beneficial effects as follows,, produce a malleation, liquid is advanced in remaining needle, can prevent effectively that blood is back in the remaining needle, avoid forming thrombosis when syringe, transfusion device or blood exchange transfusion set take off when pulling up; The needleless transfusion avoids needle point to hurt sb.'s feelings, and reduces the infection of acquired immune deficiency syndrome (AIDS), hepatitis; Sealing is reliable, reduces the potential danger that air sucks; Do not need the lancet puncture calparine cap, avoid molecule to enter transfusion system; Reduce infection and related complication that patient keeps somewhere intravenous needle and conduit, alleviate nursing staff's workload.
Description of drawings
This description comprises following two width of cloth accompanying drawings:
Fig. 1 is the structural representation of the disposable use positive pressure connector of the present invention;
Fig. 2 is the structural representation of the disposable use positive pressure connector of the present invention.
Parts shown in the figure, toponym and pairing labelling:
Male end joint 10, longitudinal hole 11, outer cone lock port 12, female end joint 20, top inner chamber 21, middle part inner chamber 22, lower lumen 23, exhaust passage 23a, female cone lock port 24, movable core bar 30, cervical region 31, protruding 31a, middle part boss 32, vertical passage 34, interconnection 35, elastic component 40, first sealing ring 51, second sealing ring 52, the 3rd sealing ring 53.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
With reference to Fig. 2, disposable use positive pressure connector of the present invention, it comprises male end joint 10, the female end joint 20 that is assembled into one, and is installed in the movable core bar 30 in the female end joint 20.Movable core bar 30 has the cervical region 31 that forms sealing with female end joint 20 top inner chambers 21 inwalls, form the middle part boss 32 that seals with female end joint 20 middle part inner chambers 22 inwalls, the interconnection 35 that is arranged on cervical region 31 communicates with the vertical passage 34 that leads to movable core bar 30 bottoms.Be provided with the elastic component 40 that acts on movable core bar 30 middle part boss 32 in female end joint 20 lower lumen 23, offer exhaust passage 23a on its inwall.Male end joint 10 has can be for the longitudinal hole 11 of movable core bar 30 insertions.
With reference to Fig. 1, under the situation that no any connector is attached thereto, positive pressure connector is closed state, keep aseptic condition, its male end joint 10 can connect the port that peripheral vein, central vein, remaining needle, three-way valve etc. need the calparine cap end socket arbitrarily, female end joint 20 can connect and pin syringe, transfusion device or blood exchange transfusion set, finishes transfusion, treatment tasks such as blood transfusion and blood drawing.With reference to Fig. 2, when female end joint 20 connects syringe, transfusion device or blood exchange transfusion set, its front end pushes movable core bar 30 downwards, movable core bar 30 is descending relatively, insert in the longitudinal hole 11 of male end joint 10 movable core bar 30 bottoms, and the air in the female end joint 20 middle part inner chambers 22 is discharged through exhaust passage 23a.This moment, the interconnection 35 of movable core bar 30 cervical regions 31 was positioned at female end joint 20 middle part inner chambers 22, and the liquid of input enters male end joint 10 longitudinal holes 11 through interconnection 35, vertical passage 34.When the syringe on being connected female end joint 20, transfusion device or blood exchange transfusion set take off, under the effect of elastic component 40, movable core bar 30 begins to go up horizontal reset, air enters in female end joint 20 lower lumen 23 by exhaust passage 23a and produces malleation, liquid is advanced in remaining needle, can prevent that blood is back in the remaining needle, avoid forming thrombosis, seal voluntarily until interconnection 35.
With reference to Fig. 2, described female end joint 20 is provided with first sealing ring 51 in the bottom of its underpart inner chamber 23, this first sealing ring 51 forms sealing with movable core bar 30 bottom outer walls, described movable core bar 30 is provided with the 3rd sealing ring 53 at the position of cervical region 31 interconnections more than 35, and described movable core bar 30 is provided with second sealing ring 52 at middle part boss 32 positions.Described elastic component 40 is by adopting the compression spring, and the upper/lower terminal of this compression spring acts on first sealing ring, 51 upper surfaces, movable core bar 30 respectively on middle part boss 32 lower surfaces.With reference to 1, described male end joint 10 has outer cone lock port 12, can connect peripheral vein, central vein, remaining needle, three-way valve etc. arbitrarily needs the port of calparine cap end socket, described female end joint 20 has female cone lock port 24, can connect and pin syringe, transfusion device or blood exchange transfusion set.With reference to Fig. 2, the top of described movable core bar 30 has protruding 31a upwards, and the guide effect of this projection 31a when syringe is connected with female end joint 20 makes medical personnel faster when operation.Male end joint 10, female end joint 20 and movable core bar 30 adopt the injection mouldings of macromolecule medical material to generate, and male end joint 10 and female end joint 20 link together by ultrasonic bonding, produce and assemble ten parts easy.

Claims (8)

1. disposable use positive pressure connector is characterized in that: it comprises male end joint (10), the female end joint (20) that is assembled into one, and is installed in the movable core bar (30) in the female end joint (20); Movable core bar (30) has the cervical region (31) that forms sealing with female end joint (20) top inner chamber (21) inwall, form the middle part boss (32) that seals with female end joint (20) middle part inner chamber (22) inwall, the interconnection (35) that is arranged on cervical region (31) communicates with the vertical passage (34) that leads to movable core bar (30) bottom; Be provided with the elastic component (40) that acts on movable core bar (30) middle part boss (32) in female end joint (20) lower lumen (23), offer exhaust passage (23a) on its inwall; Male end joint (10) has can be for the longitudinal hole (11) of movable core bar (30) insertion.
2. disposable use positive pressure connector as claimed in claim 2, it is characterized in that: described female end joint (20) is provided with first sealing ring (51) in the bottom of its underpart inner chamber (23), and this first sealing ring (51) forms sealing with movable core bar (30) bottom outer wall.
3. disposable use positive pressure connector as claimed in claim 2 is characterized in that: the position of described movable core bar (30) more than cervical region (31) interconnection (35) is provided with the 3rd sealing ring (53).
4. disposable use positive pressure connector as claimed in claim 2 is characterized in that: described movable core bar (30) is provided with second sealing ring (52) at middle part boss (32) position.
5. disposable use positive pressure connector as claimed in claim 2 is characterized in that: described elastic component (40) acts on first sealing ring (51) upper surface, movable core bar (30) the compression spring in middle part boss (32) lower surface respectively for its two ends.
6. disposable use positive pressure connector as claimed in claim 1 is characterized in that: described male end joint (10) has outer cone lock port (12).
7. disposable use positive pressure connector as claimed in claim 1 is characterized in that: described female end joint (20) has female cone lock port (24).
8. disposable use positive pressure connector as claimed in claim 1 is characterized in that: the top of described movable core bar (30) has projection (31a) upwards.
CN2010101801028A 2010-05-21 2010-05-21 Disposable positive pressure joint CN101912664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101801028A CN101912664A (en) 2010-05-21 2010-05-21 Disposable positive pressure joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101801028A CN101912664A (en) 2010-05-21 2010-05-21 Disposable positive pressure joint

Publications (1)

Publication Number Publication Date
CN101912664A true CN101912664A (en) 2010-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101801028A CN101912664A (en) 2010-05-21 2010-05-21 Disposable positive pressure joint

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Country Link
CN (1) CN101912664A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102423762A (en) * 2011-08-03 2012-04-25 李林风 Improved indwelling catheter embolism clearing device and assembling method thereof
CN103845791A (en) * 2014-03-13 2014-06-11 李宜 Indwelling catheter trace slow-release transfusion device
CN104127934A (en) * 2014-07-22 2014-11-05 李宜 Infusion apparatus special for indwelling catheter
CN104815365A (en) * 2015-05-20 2015-08-05 宁湘龙 Medical needleless positive pressure joint
CN105854177A (en) * 2015-01-21 2016-08-17 伯尔拉工业有限公司 Valved male luer connector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102423762A (en) * 2011-08-03 2012-04-25 李林风 Improved indwelling catheter embolism clearing device and assembling method thereof
CN103845791A (en) * 2014-03-13 2014-06-11 李宜 Indwelling catheter trace slow-release transfusion device
CN103845791B (en) * 2014-03-13 2017-01-11 广东先来医疗器械有限公司 Indwelling catheter trace slow-release transfusion device
CN104127934A (en) * 2014-07-22 2014-11-05 李宜 Infusion apparatus special for indwelling catheter
CN105854177A (en) * 2015-01-21 2016-08-17 伯尔拉工业有限公司 Valved male luer connector
CN104815365A (en) * 2015-05-20 2015-08-05 宁湘龙 Medical needleless positive pressure joint

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PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20101215

C02 Deemed withdrawal of patent application after publication (patent law 2001)