CN103285450A - Multifunctional indwelling needle - Google Patents

Multifunctional indwelling needle Download PDF

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Publication number
CN103285450A
CN103285450A CN2013102341896A CN201310234189A CN103285450A CN 103285450 A CN103285450 A CN 103285450A CN 2013102341896 A CN2013102341896 A CN 2013102341896A CN 201310234189 A CN201310234189 A CN 201310234189A CN 103285450 A CN103285450 A CN 103285450A
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CN
China
Prior art keywords
draw point
casing seat
seat
pullover
needle
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Granted
Application number
CN2013102341896A
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Chinese (zh)
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CN103285450B (en
Inventor
张建林
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Nantong Hengtai Medical Equipment Co., Ltd.
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NANTONG HENGTAI MEDICAL EQUIPMENT Co Ltd
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Priority to CN201310096694.9 priority Critical
Priority to CN201310096694 priority
Priority to CN2013100966949 priority
Application filed by NANTONG HENGTAI MEDICAL EQUIPMENT Co Ltd filed Critical NANTONG HENGTAI MEDICAL EQUIPMENT Co Ltd
Priority to CN201310234189.6A priority patent/CN103285450B/en
Priority claimed from AU2013392518A external-priority patent/AU2013392518B2/en
Publication of CN103285450A publication Critical patent/CN103285450A/en
Application granted granted Critical
Publication of CN103285450B publication Critical patent/CN103285450B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a multifunctional indwelling needle comprising a sleeve tube assembly and a steel needle assembly. The multifunctional indwelling needle is characterized by further comprising an anti-reflux valve, an anti-puncture safety device and a non-needle positive pressure connector, wherein the anti-reflux valve is arranged in the middle cavity of a sleeve tube seat and located at the front end of a hose communicated with the sleeve tube seat in the axial direction of the sleeve tube seat; the anti-puncture safety device is arranged on a steel needle seat, and the non-needle positive pressure connector is arranged on an external connector; the anti-puncture safety device is a non-spring anti-puncture safety device, and the non-needle positive pressure connector is a non-spring non-needle positive pressure connector. Blood can be prevented from overflowing to cause pollution due to the sealed structure; the situation that because a medical worker is punctured when the steel needle is pulled out, the medical worker catches a disease is avoided; anti-reflux double protection avoids accidental conditions caused by a single measure, the multifunctional indwelling needle is safe and reliable at work, the problems caused by blood reflux are avoided, and working efficiency of the medical worker is improved. Meanwhile, the non-spring structure avoids the corrosion problem caused by a spring structure, the multifunctional indwelling needle is safer and more sanitary, and steady and reliable working of the indwelling needle is ensured.

Description

A kind of multi-functional remaining needle
Technical field
The present invention relates to a kind of remaining needle, particularly a kind of have anti-stab, anti-adverse current and working stability is reliable, the multi-functional remaining needle of seal of safety and sanitation.
Background technology
Venous detaining needle claims the venous cannula pin again, it reaches fear to having an injection owing to can reduce misery that the patient causes because of venipuncture repeatedly, alleviate impatience, be convenient to clinical application, suddenly, the rescue medication of critical patient, alleviate nurse's workload, thereby venous detaining needle is in wide clinical application.The building block of remaining needle core comprises the conduit/sleeve pipe that can be retained in endovascular softness, and stainless guiding puncture nook closing member.During use conduit and nook closing member are punctured in the blood vessel together, behind the whole intravasations of conduit, return and to withdraw from nook closing member, thereby only the catheter retaining of softness is carried out infusion treatment in blood vessel.
Remaining needle is divided into open and closed, and safety (anti-pricking wound) and anti-adverse current type.The shortcoming that present remaining needle exists is:
On the overall structure of remaining needle, product function is single, can't realize many functions simultaneously, for hospital, it need adopt the remaining needle of plurality of specifications simultaneously, and need determine with reference to the use amount of each specification, model, brings very big trouble for buying, stock's management; Medical personnel then need to select for use according to different situations the remaining needle of different model, function.
On each modular construction of remaining needle, to prevent at present stabbing in the type remaining needle structure, it mainly comprises following several mode:
After thrusting, by pressing the button that is arranged in the remaining needle, by spring interior pin is pulled into needle guard inside, it is received in wherein (for example flat 10-52499 document of TOHKEMY, public announcement of a patent application CN 102512728A);
Spring needle point protection mechanism is arranged at the inside of outer Needle sleeve, and by extracting interior pin out, the needle point protection mechanism breaks away from outer Needle sleeve, and the front end of interior pin is covered (for example patent publication No. CN 101011613A);
The shortcoming of above-mentioned dual mode is: need use spring and realize, if spring smoothly deformation reset, then can't realize the protection to the draw point needle point, so reliable inadequately.
In anti-adverse current type remaining needle structure, Granted publication CN 201257220Y discloses a kind of anti-adverse current remaining needle, and it is by having the method for valve for preventing reverse-flow to prevent the adverse current function at trocar catheter block internal fixation; Also having the part employing at Y shape remaining needle positive pressure connector to be set realizes; All there is the single shortcoming of measure in both, and for example the shortcoming of closure fully may appear in valve for preventing reverse-flow, and in the positive pressure connector structure, if medical personnel extract excessive velocities when extracting transfusion device, positive pressure connector has little time to form malleation, also blood back phenomenon, less reliable may occur.
In addition, also there is certain defective in present positive pressure connector: for example application publication number CN 101912664A discloses a kind of disposable use positive pressure connector, it utilizes spring to provide positive pressure to positive pressure connector, and is very high to rustless property, the safety and health request of spring.
Therefore research and develop a kind of have novel the time anti-ly stab, anti-adverse current and working stability multi-functional remaining needle reliable, safety and sanitation be imperative.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of multi-functional remaining needle, can avoid excessive, the backflow of blood, avoids medical personnel to stab to draw point protection when extracting draw point, and working stability is reliable, safety and sanitation.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of multi-functional remaining needle, comprise thimble assembly and draw point assembly: this thimble assembly comprises casing seat, sleeve pipe, batching pig, casing seat has the cavity that arranges vertically, the front end fixed connecting sleeve of casing seat, sleeve pipe is communicated with the cavity of casing seat, fill in batching pig in the rear port of casing seat, the middle part of casing seat is communicated with external connector by flexible pipe; This draw point assembly comprises the draw point seat of draw point and draw point end, arrange on the draw point seat to hold needle handle, the tip of draw point along casing seat axially pass batching pig, casing seat and sleeve pipe successively from the rear end of described casing seat after stretch out; It is characterized in that: anti-adverse current valve is housed in the cavity front portion of described casing seat; The anti-safety device of stabbing of no spring is housed in described draw point seat.
In some embodiments, described anti-adverse current valve comprises tubular body and is located at the tapered end of its lower end, is provided with the wire that communicates with the endoporus of tubular body in the center bottom of tapered end and cracks; Be provided with the anterior inboard footpath outward flange of the cavity that can embed described casing seat ordinatedly on the top of tubular body; In casing seat middle part arranged outside the relative a pair of projection of pressing is arranged at this, it is corresponding that this presses projection and the wire of the anti-adverse current valve front end two ends of cracking; Described anti-adverse current valve and casing seat middle part adopt elastomeric material to make.
In some embodiments, the described anti-safety device of stabbing comprises plug, multi-stage expansion cover and pullover, and described draw point seat is the tubular body of top closure, and the axle center in draw point seat bottom connects the top of plug, and the lower end of plug is connected with draw point is terminal; In the reducing of the upper end of the interior one-level telescopic of the flange slip insertion multi-stage expansion cover of the lower end of this plug, the flange of the lower end of the one-level telescopic of adjacent inboard all slides in the reducing on the one-level telescopic top of inserting the adjacent outside, the lower end of outermost one-level telescopic is connected with pullover, this pullover outer peripheral face slides and inserts in the lower port of this draw point seat, is provided be used to the through hole that passes draw point in this pullover axle center; When outwards pull out pullover make that multi-stage expansion cover all stretches out after, draw point all enters the inside at the multi-stage expansion cover.
In some embodiments, be provided with the off-centre operation cone that elastomeric material is made described in pullover, have oblique through hole in the bottom center of this off-centre operation cone to eccentric conical tip, the aperture of through hole is slightly larger than the external diameter of draw point; This conical tip is towards a side of draw point, and the bottom of off-centre operation cone embeds in the mouth of pullover the inner ordinatedly.
In some embodiments, be connected and fixed by the quick distachable structure between the described pullover and casing seat.
In some embodiments, described quick distachable structure is: at this pullover front end center cylinder is set, have the through hole that passes draw point in cylindrical axle center, and the terminal inner cavity size of cylinder external diameter and casing seat matches, and cylinder embeds behind the casing seat inner chamber and the terminal interference fit of casing seat.
In some embodiments, described quick distachable structure is: at this pullover front end a pair of claw is set, is provided with the draw-in groove that cooperates with this claw in the inner wall at end of casing seat.
In some embodiments, described external connector is the transparent threeway of a Y shape, first end of the transparent threeway of Y shape and described soft pipe connection, and second end is installed calparine cap or block, and the 3rd end is connected with a Needleless barotropic joint by female Luer.
In some embodiments, described Needleless barotropic joint comprises pressurized enclosure, plinth and silica gel plug, the upper end of the pressurized enclosure of tubulose is provided with Rule female cone joint, the lower surface of pressurized enclosure is connected with the plinth upper surface, is provided with several equally distributed guiding gutter vertically at the inwall of the equal-diameter part of pressurized enclosure; The profile of the silica gel plug of hollow and the interior shape of pressurized enclosure coincide, and are located in the pressurized enclosure, are cylinder on the top of this silica gel plug, and the equal-diameter part of this silica gel plug is corrugated tube shape, and the lower end of silica gel plug is connected with the upper end of plinth by binding agent; The center, upper end of this plinth is provided with an external diameter less than the annular projection of pressurized enclosure cavity of resorption internal diameter, and the lower end of described silica gel plug is bonded in the inner peripheral surface of this annular projection; In this annular projection, be provided with the balance pipe that communicates with ambient atmosphere; This plinth lower end is Rule outer cone plinth, is provided with the cylindrical taper that is connected for described external connector in the central authorities of this Rule outer cone plinth; Between the outside of the root of this annular projection and inside, this cylindrical taper upper end, be provided with radially pod apertures.
The invention has the advantages that: adopt anti-adverse current valve, anti-ly stab the closed remaining needle structure that safety device, Needleless barotropic joint combine, closed structure can prevent that blood is excessive and pollute.Adopt the anti-safety device protection draw point of stabbing, stab medical personnel when avoiding draw point to extract and catch.Carry out the anti-adverse current duplicate protection of blood by preventing that adverse current valve and Needleless barotropic joint combine; avoid single measure easy unexpected situation to occur; safe and reliable; the problem of avoiding blood to reflux and bring; every day, transfusion need not to use heparin to carry out the malleation tube sealing after finishing, and exempted the trouble of the washing pipe of infusing again, had significantly reduced medical personnel's the loaded down with trivial details working time; increase work efficiency, reduce patient's anxiety sense.The use of Needleless barotropic joint, it is just passable only to need the liquid medicine filter of transfusion device directly to inject the Needleless barotropic joint when making transfusion, removes scalp acupuncture from, economizes on resources.Simultaneously, the anti-safety device of stabbing is stabbed safety device for no spring is anti-, and the Needleless barotropic joint is no spring Needleless barotropic joint, avoids spring structure to bring the corrosion problem, and safety and sanitation more guarantee that the remaining needle working stability is reliable.
In addition, the casing seat middle part outer wall of making at elastomeric material is provided with a pair of and anti-adverse current valve front end corresponding projection of cracking, effect is: when needs are drawn blood, pinch this to projection by medical personnel, to prevent that the adverse current valve is opened by force gets final product, need not to do in addition the puncture blood drawing, reduce patient's pain to greatest extent.
In outermost flexible protective sleeve, the off-centre operation cone is set, can be for after avoiding reinforcing bar to enter flexible protective sleeve, flexible protective sleeve retraction under deadweight or external force effect causes reinforcing bar to stretch out again, guarantees medical personnel's safety.
Be connected and fixed by the quick distachable structure between the pullover and casing seat, casing seat and draw point seat dislocation when avoiding puncturing, throw off and cause puncture failure; When avoiding extracting draw point out, pullover situation about coming off namely do not occur in the flexible protective sleeve of retraction fully at draw point yet, improve security performance.
Description of drawings
Fig. 1 is the population structure sketch map of the multi-functional remaining needle of the present invention.
Fig. 2 is the axial sectional structure sketch map of thimble assembly of the present invention.
Fig. 3 is the enlarged drawing (broken section) of anti-adverse current valve among Fig. 2.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is draw point assembly among the present invention and anti-sectional structure sketch map of stabbing safety device.
Fig. 6 is put the working state schematic representation of stabbing safety device among Fig. 5.
Fig. 7 is the outline drawing of Needleless barotropic joint among the present invention.
Fig. 8 is the sectional structure sketch map of Needleless barotropic joint among the present invention.
Fig. 9 is the B-B cutaway view of Fig. 8.
Figure 10 is the C-C cutaway view of Fig. 8.
Figure 11 is the upward view of pressurized enclosure among Fig. 7-Fig. 9.
The specific embodiment
As Fig. 1-shown in Figure 11, the multi-functional remaining needle of the present invention comprises the thimble assembly 1 and the draw point assembly 2 that complement one another, wherein:
Thimble assembly 1 mainly comprises casing seat 11, sleeve pipe 12, batching pig 13, casing seat 11 has the cavity that arranges vertically, the front end fixed connecting sleeve 12 of casing seat 11, sleeve pipe 12 is communicated with the cavity of casing seat 11, batching pig 13 is filled in the cavity rear end of casing seat 11, and the middle part of casing seat 11 is communicated with external connector 4 by flexible pipe 3.On flexible pipe 3, hemostatic clamp can be set.
In the present embodiment, external connector 4 is the transparent threeway of a Y shape, and first end of the transparent threeway of Y shape is communicated with flexible pipe 3, and second end is installed calparine cap or block, and the 3rd end then is connected with Needleless barotropic joint 5 by female Luer.
Draw point assembly 2 comprises the draw point seat 22 of draw point 21 and draw point 21 ends, arranges on the draw point seat 22 and holds needle handle 28, and the tip of draw point 21 can axially stretching out after casing seat 11 ends pass batching pig 13, casing seat 11 and sleeve pipe 12 successively along casing seat 11.
Among the present invention, also comprise anti-adverse current valve 14, anti-safety device, the Needleless barotropic joint 5 of stabbing.Wherein, anti-adverse current valve 14 is arranged on the front portion in the casing seat 11, and is located axially at flexible pipe 3 front ends that are communicated with casing seat 11 at casing seat 11.Prevent that stabbing safety device is arranged in the draw point seat; And the anti-safety device of stabbing is stabbed safety device for no spring is anti-, Needleless barotropic joint 5 is no spring Needleless barotropic joint.
Referring to Fig. 3 and Fig. 4, described anti-adverse current valve 14 comprises the tapered end 142 that is located at the tubular body lower end, is provided with the wire that communicates with the endoporus 143 of tubular body in the center bottom of tapered end 142 and cracks 144.Be provided with the anterior inboard footpath outward flange 141 of the cavity that can embed described casing seat 11 ordinatedly on the top of tubular body.In casing seat 11 middle part arranged outside the relative a pair of projection 15 of pressing is arranged at this, it is corresponding with the wire of anti-adverse current valve 14 front ends 144 two ends of cracking that this presses projection 15, in order to push this to protruding 15 o'clock, can push the two ends that anti-adverse current valve 14 front end wire are cracked, and then the enlarged openings degree.
Described anti-adverse current valve 14 adopts good springiness and soft resin material to make, and the middle part of casing seat 11 adopts elastomeric material to make.
The operation principle of anti-adverse current valve 14 is: before the puncture, draw point 21 axially stretches out after casing seat 11 ends pass cracking of batching pig 13, casing seat 11, anti-adverse current valve 14 and sleeve pipe 12 along casing seat 11; Puncture back draw point 21 is extracted, anti-adverse current valve 14 auto-closing immediately under elastic reaction, and the wedge structure of himself is avoided being opened under the blood pressure that refluxes, and improves the reliability of anti-adverse current; Transfusion state, under the pressure effect of injection, anti-cracking of adverse current valve 14 then opened again automatically, allows injection enter vein by casing seat 11 and sleeve pipe 12 smoothly, and transfusion is then closed after finishing automatically.
Referring to Fig. 5 and Fig. 6, in the present embodiment, the described anti-safety device of stabbing comprises plug 23, multi-stage expansion cover and pullover 26, described draw point seat 22 is the tubular body of top closure, axle center in draw point seat 22 bottoms connects the top (rear end) of plug 23, the lower end of plug 23 (front end) and 21 terminal connections of draw point.In the reducing of the upper end of the interior first order telescopic 24 of the flange 231 slip insertion multi-stage expansion covers of the lower end of this plug 23, the flange 251 of the lower end of the second level telescopic 25 of adjacent inboard all slides in the reducing on the one-level telescopic top of inserting the adjacent outside, and (this embodiment has only the two-stage telescopic, flange 251 and pullover 26 two-stages of the lower end of second level telescopic 25), the lower end of outermost one-level telescopic is connected with pullover 26, this outer peripheral face of pullover 26 slides and inserts in the lower port of this draw point seat 22, is provided with in this axle center of pullover 26 be used to the through hole that passes draw point (i.e. the centre bore of the cylinder 261 that protrudes downwards); When outwards pull out pullover 26 make that two-stage telescopic 24 and 25 all stretches out after, draw point 21 all enters (covering) in the inside of multi-stage expansion cover, plays the effect (referring to Fig. 6) of shielding draw point 21.
Also can be provided with the off-centre operation cone 27 that elastomeric material is made in described pullover 26, the conical tip extremely eccentric in the bottom center of this off-centre operation cone 27 has oblique through hole 271, and the aperture of through hole 271 is slightly larger than the external diameter of draw point 21.This conical tip is towards a side (top among Fig. 6) of draw point 21, and the bottom of off-centre operation cone 27 embeds in the mouth of pullover 26 the inners ordinatedly.
Pullover 26 and casing seat 11 between can be connected and fixed by the quick distachable structure, make draw point 21 in stretching into casing seat 11 after, pullover 26 are connected and fixed with casing seat 11, when avoiding puncturing, casing seat 11 with 22 dislocation of draw point seat, throw off and cause puncture failure.When avoiding extracting draw point 21 out simultaneously, pullover 26 do not cover draw point 21 namely comes off.
Described quick distachable structure can for: at pullover 26 center cylinder 261 is set, cylinder 261 centers have and hold the through hole that draw point 21 passes through, and the terminal inner cavity size of cylinder external diameter and casing seat 11 matches, and make cylinder embed behind casing seat 11 inner chambers and casing seat 11 terminal interference fit, certainly.Cylinder 261 also can be connected by the known demountable structure of bayonet socket and so on casing seat 11, and for example, the front end pullover 26 arranges a pair of claw, at the built-in draw-in groove that cooperates with claw of the terminal inner chamber of casing seat 11, repeats no more here.
It will be understood by those skilled in the art that above-mentioned multi-stage expansion cover only is exemplary, is not circumscribed; The quantity of telescopic can be two, four or other quantity; And should be appreciated that off-centre operation cone 27 is arranged in pullover 26, rather than be confined to pullover 26.
Prevent that stabbing the safety device operation principle is:
The puncture state: telescopic is under the contraction state, first telescopic 24, second telescopic 25 and pullover 26 are contracted in the draw point seat 22, draw point 21 passes pullover 26 and exposes draw point seat 22, draw point 21 passes off-centre operation cone 27 simultaneously, compressional deformation takes place in the rectification that makes off-centre operation cone 27 be subjected to draw point 21 in pullover 26, the terminal inner chamber that pullover 26 cylinder embeds casing seat 11 is connected with casing seat 11.
As shown in Figure 6, after the puncture, upwards spur draw point seat 22, plug 23 and draw point 21 are to extracting out away from casing seat 11 directions, telescopic is under the extended configuration, first telescopic 24, second telescopic 25 with plug 23 along mandrel axis to trailing to moving away from casing seat 11 directions, when the needle point of draw point 21 bounce back always leave off-centre operation cone 27 in pullover 26 after, off-centre operation cone 27 state that under the elastic deformation effect, affranchises, make the through hole top of off-centre operation cone 27 depart from the axis of draw point 21, the through hole that 21 of draw points can't pass off-centre operation cone 27 again stretches out outside the 3rd telescopic 26, avoids 21 couples of medical personnel of draw point to stab.
Referring to Fig. 7-Figure 11, described Needleless barotropic joint 5 comprises pressurized enclosure 51, plinth 52 and silica gel plug 53, the upper end of the pressurized enclosure 51 of tubulose is provided with Rule female cone joint 512, the lower surface of pressurized enclosure 51 is connected with the upper surface of plinth 52, the inwall of the equal-diameter part of pressurized enclosure 51 be provided with several along circumference evenly distribute, axial guiding gutter 511.The profile of the silica gel plug 53 of hollow and the interior shape of pressurized enclosure 51 coincide, and be located in the pressurized enclosure 51, be cylinder (with the top closure of the silica gel plug 53 of hollow) on the top of this silica gel plug 53, the equal-diameter part of this silica gel plug 53 is corrugated tube shape, and the lower end of silica gel plug 53 is connected by the upper end of binding agent with plinth 52.Silica gel plug 53 is under free state, and the inwall of pressurized enclosure 51 is close in its stage casing, and the last intracavity that the upper end can embed pressurized enclosure 51 forms reliable hermetically-sealed construction.
The center, upper end of this plinth 52 is provided with an external diameter less than the annular projection 523 of pressurized enclosure 51 cavity of resorption internal diameters, and the lower end of described silica gel plug 53 is bonded in the inner peripheral surface of this annular projection 523.In the annular projection 523 of plinth 52, be provided with two balance pipe 521(that communicate with ambient atmosphere for axially, referring to Fig. 9); These plinth 52 lower ends are Rule outer cone plinth, are provided with the cylindrical taper 524 that is connected for described external connector in the central authorities of this Rule outer cone plinth; Be provided with radially pod apertures 522 between the outside of the root of this annular projection 523 and this inside, cylindrical taper 524 upper end, radially the outer end of pod apertures 522 is corresponding with the guiding gutter 511 of pressurized enclosure 51 inboards.
The operation principle of Needleless barotropic joint 5 is:
Under the free state, the upper end of silica gel plug 53, middle part cooperate the formation sealing with upper end, the middle part inner chamber of pressurized enclosure 51, make positive pressure connector close.
When using syringe, syringe is connected with the upper end of pressurized enclosure 51 by Rule outer cone joint 512, the cylindrical taper of syringe Rule outer cone joint 512 is pressed into the epicoele of pressurized enclosure 51, and the top of extruding silica gel plug 53, the upper end of silica gel plug 53 is inwardly compressed, make its inner chamber by balance pipe 521 aerofluxuss, removed the sealing between 53 pairs of pressurized enclosures 51 of silica gel plug and the silica gel plug 53, thereby formed by the upper inner of pressurized enclosure 51 and the gap between the silica gel plug 53, the guiding gutter 511 of equal-diameter part, a flow channel for liquids of the centre bore of pod apertures 522 and cylindrical taper 524.
After removing syringe, silica gel plug 53 stretches under the effect of elastic deformation power and resets, continue and pressurized enclosure 51 fitted seal, simultaneously, owing to when silica gel plug 53 stretches pressurized enclosure 51 inner chambers are caused extruding, make the aforesaid liquid runner is produced a malleation (having closed flow channel for liquids), and the liquid in the flow channel for liquids is continued to advance, and then avoid blood to reflux.
Operation principle of the present invention is:
During puncture, draw point 21 is positioned at sleeve pipe 12, and the needle point of draw point 21 exposes sleeve pipe 12(as shown in Figure 1).Utilize draw point 21 to carry out venipuncture, bring sleeve pipe 12 into vein simultaneously.After the puncture, extract draw point 21, sleeve pipe 12 is stayed intravenous.
When extracting draw point 21, by preventing that stabbing safety device covers outside the draw point 21, avoids draw point 21 to stab medical personnel and causes blood contamination.
During transfusion, syringe or transfusion device are infused by the infusion channel that external connector 4, flexible pipe 3, casing seat 11 and sleeve pipe 12 form.
When removing syringe or transfusion device, Needleless barotropic joint 5 forms malleation, and the liquid in the infusion channel is advanced to venous side; Simultaneously, anti-adverse current valve 14 can be closed when extracting transfusion device immediately medical personnel, avoids blood to reflux, and avoids extracting that transfusion device is too fast makes Needleless barotropic joint 5 have little time to form malleation blood back to occur.

Claims (9)

1. multi-functional remaining needle comprises thimble assembly and draw point assembly:
This thimble assembly comprises casing seat, sleeve pipe, batching pig, casing seat has the cavity that arranges vertically, the front end fixed connecting sleeve of casing seat, and sleeve pipe is communicated with the cavity of casing seat, fill in batching pig in the rear port of casing seat, the middle part of casing seat is communicated with external connector by flexible pipe;
This draw point assembly comprises the draw point seat of draw point and draw point end, arrange on the draw point seat to hold needle handle, the tip of draw point along casing seat axially pass batching pig, casing seat and sleeve pipe successively from the rear end of described casing seat after stretch out;
It is characterized in that: anti-adverse current valve is housed in the cavity front portion of described casing seat; The anti-safety device of stabbing of no spring is housed in described draw point seat.
2. multi-functional remaining needle according to claim 1 is characterized in that: described anti-adverse current valve comprises tubular body and is located at the tapered end of its lower end, is provided with the wire that communicates with the endoporus of tubular body in the center bottom of tapered end and cracks; Be provided with the anterior inboard footpath outward flange of the cavity that can embed described casing seat ordinatedly on the top of tubular body; In casing seat middle part arranged outside the relative a pair of projection of pressing is arranged at this, it is corresponding that this presses projection and the wire of the anti-adverse current valve front end two ends of cracking; Described anti-adverse current valve and casing seat middle part adopt elastomeric material to make.
3. multi-functional remaining needle according to claim 1, it is characterized in that: the described anti-safety device of stabbing comprises plug, multi-stage expansion cover and pullover, described draw point seat is the tubular body of top closure, axle center in draw point seat bottom connects the top of plug, and the lower end of plug is connected with draw point is terminal; In the reducing of the upper end of the interior one-level telescopic of the flange slip insertion multi-stage expansion cover of the lower end of this plug, the flange of the lower end of the one-level telescopic of adjacent inboard all slides in the reducing on the one-level telescopic top of inserting the adjacent outside, the lower end of outermost one-level telescopic is connected with pullover, this pullover outer peripheral face slides and inserts in the lower port of this draw point seat, is provided be used to the through hole that passes draw point in this pullover axle center; When outwards pull out pullover make that multi-stage expansion cover all stretches out after, draw point all enters the inside at the multi-stage expansion cover.
4. multi-functional remaining needle according to claim 3, it is characterized in that: be provided with the off-centre operation cone that elastomeric material is made described in pullover, bottom center in this off-centre operation cone has oblique through hole to eccentric conical tip, and the aperture of through hole is slightly larger than the external diameter of draw point; This conical tip is towards a side of draw point, and the bottom of off-centre operation cone embeds in the mouth of pullover the inner ordinatedly.
5. multi-functional remaining needle according to claim 3 is characterized in that: be connected and fixed by the quick distachable structure between the described pullover and casing seat.
6. multi-functional remaining needle according to claim 5, it is characterized in that: described quick distachable structure is: at this pullover front end center cylinder is set, have the through hole that passes draw point in cylindrical axle center, and the terminal inner cavity size of cylinder external diameter and casing seat matches, and cylinder embeds behind the casing seat inner chamber and the terminal interference fit of casing seat.
7. multi-functional remaining needle according to claim 5, it is characterized in that: described quick distachable structure is: at this pullover front end a pair of claw is set, is provided with the draw-in groove that cooperates with this claw in the inner wall at end of casing seat.
8. multi-functional remaining needle according to claim 1, it is characterized in that: described external connector is the transparent threeway of a Y shape, first end of the transparent threeway of Y shape and described soft pipe connection, second end is installed calparine cap or block, and the 3rd end is connected with a Needleless barotropic joint by female Luer.
9. multi-functional remaining needle according to claim 8, it is characterized in that: described Needleless barotropic joint comprises pressurized enclosure, plinth and silica gel plug, the upper end of the pressurized enclosure of tubulose is provided with Rule female cone joint, the lower surface of pressurized enclosure is connected with the plinth upper surface, is provided with several equally distributed guiding gutter vertically at the inwall of the equal-diameter part of pressurized enclosure; The profile of the silica gel plug of hollow and the interior shape of pressurized enclosure coincide, and are located in the pressurized enclosure, are cylinder on the top of this silica gel plug, and the equal-diameter part of this silica gel plug is corrugated tube shape, and the lower end of silica gel plug is connected with the upper end of plinth by binding agent;
The center, upper end of this plinth is provided with an external diameter less than the annular projection of pressurized enclosure cavity of resorption internal diameter, and the lower end of described silica gel plug is bonded in the inner peripheral surface of this annular projection; In this annular projection, be provided with the balance pipe that communicates with ambient atmosphere; This plinth lower end is Rule outer cone plinth, is provided with the cylindrical taper that is connected for described external connector in the central authorities of this Rule outer cone plinth; Between the outside of the root of this annular projection and inside, this cylindrical taper upper end, be provided with radially pod apertures.
CN201310234189.6A 2013-03-25 2013-06-14 Multifunctional indwelling needle Active CN103285450B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201310096694.9 2013-03-25
CN201310096694 2013-03-25
CN2013100966949 2013-03-25
CN201310234189.6A CN103285450B (en) 2013-03-25 2013-06-14 Multifunctional indwelling needle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201310234189.6A CN103285450B (en) 2013-03-25 2013-06-14 Multifunctional indwelling needle
AU2013392518A AU2013392518B2 (en) 2013-06-14 2013-06-28 Multifunctional indwelling needle
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CN103736170A (en) * 2013-10-12 2014-04-23 苏州市雅思精密模具有限公司 Anti-puncture remaining needle
CN103845791A (en) * 2014-03-13 2014-06-11 李宜 Indwelling catheter trace slow-release transfusion device
CN103990202A (en) * 2013-12-16 2014-08-20 苏州林华医疗器械有限公司 Safety-type venous indwelling needle
CN104162202A (en) * 2014-06-10 2014-11-26 丁培琪 Reverse-flowing-prevention venous indwelling needle
CN104984439A (en) * 2015-06-19 2015-10-21 夏瑾梅 Novel needle stick injury preventing type remaining needle
CN105013044A (en) * 2015-07-30 2015-11-04 西安交通大学第一附属医院 One-way valve type retaining needle
WO2015172423A1 (en) * 2014-05-15 2015-11-19 上海金塔医用器材有限公司 Safe pump indwelling needle
CN105107058A (en) * 2015-09-22 2015-12-02 四川省人民医院 Oval diversion safe indwelling needle
CN105147415A (en) * 2015-06-23 2015-12-16 武瑞 Special-purpose venous indwelling needle for dairy cows
CN105682721A (en) * 2014-07-21 2016-06-15 崔根郁 Fluid injection needle unit having stick injury and infection prevention function
CN105833388A (en) * 2016-04-01 2016-08-10 首都医科大学附属北京地坛医院 Safe indwelling needle
CN106362263A (en) * 2016-08-30 2017-02-01 苏州鱼跃医疗科技有限公司 Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle
CN109646761A (en) * 2018-12-29 2019-04-19 顶医疗科技(昆山)有限公司 A kind of anti-venous indwelling needle
CN110975061A (en) * 2019-11-19 2020-04-10 王君霞 Puncture-preventing remaining needle capable of continuously supplying liquid

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CN200960351Y (en) * 2006-05-25 2007-10-17 株式会社榎本 Indwelling needle capable of preventing counter-flow effectively
CN201033192Y (en) * 2007-05-15 2008-03-12 上海林华医疗器械有限公司 Needle for remaining in vein having positive pressure joint
CN201257220Y (en) * 2008-08-28 2009-06-17 江西三鑫医疗器械集团有限公司 Back flow prevention retention needle
CN101879339A (en) * 2010-07-12 2010-11-10 上海康德莱企业发展集团医疗器械有限公司 Needleless dosing positive pressure connector
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103736170A (en) * 2013-10-12 2014-04-23 苏州市雅思精密模具有限公司 Anti-puncture remaining needle
CN103990202A (en) * 2013-12-16 2014-08-20 苏州林华医疗器械有限公司 Safety-type venous indwelling needle
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
WO2015172423A1 (en) * 2014-05-15 2015-11-19 上海金塔医用器材有限公司 Safe pump indwelling needle
CN104162202A (en) * 2014-06-10 2014-11-26 丁培琪 Reverse-flowing-prevention venous indwelling needle
CN105682721A (en) * 2014-07-21 2016-06-15 崔根郁 Fluid injection needle unit having stick injury and infection prevention function
CN104984439A (en) * 2015-06-19 2015-10-21 夏瑾梅 Novel needle stick injury preventing type remaining needle
CN105147415A (en) * 2015-06-23 2015-12-16 武瑞 Special-purpose venous indwelling needle for dairy cows
CN105013044A (en) * 2015-07-30 2015-11-04 西安交通大学第一附属医院 One-way valve type retaining needle
CN105013044B (en) * 2015-07-30 2018-05-29 西安交通大学第一附属医院 One-way valve formula remaining needle
CN105107058A (en) * 2015-09-22 2015-12-02 四川省人民医院 Oval diversion safe indwelling needle
CN105107058B (en) * 2015-09-22 2018-11-02 四川省人民医院 A kind of ellipse shunt safety type remaining needle
CN105833388A (en) * 2016-04-01 2016-08-10 首都医科大学附属北京地坛医院 Safe indwelling needle
CN106362263A (en) * 2016-08-30 2017-02-01 苏州鱼跃医疗科技有限公司 Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle
CN109646761A (en) * 2018-12-29 2019-04-19 顶医疗科技(昆山)有限公司 A kind of anti-venous indwelling needle
CN110975061A (en) * 2019-11-19 2020-04-10 王君霞 Puncture-preventing remaining needle capable of continuously supplying liquid

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