CN103285450B - Multifunctional indwelling needle - Google Patents
Multifunctional indwelling needle Download PDFInfo
- Publication number
- CN103285450B CN103285450B CN201310234189.6A CN201310234189A CN103285450B CN 103285450 B CN103285450 B CN 103285450B CN 201310234189 A CN201310234189 A CN 201310234189A CN 103285450 B CN103285450 B CN 103285450B
- Authority
- CN
- China
- Prior art keywords
- draw point
- casing seat
- seat
- pullover
- needle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
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
Technical field
The present invention relates to a kind of remaining needle, particularly a kind of have that Anti-stabbing, counterflow-preventing and working stability are reliable, the multi-functional remaining needle of seal of safety and sanitation.
Background technology
Venous detaining needle is also known as venous catheter needle, it is owing to can reduce patient because of venipuncture repeatedly and the misery caused and to the fear of having an injection, alleviate impatience, be convenient to clinical application, suddenly, the rescue medication of critical patient, alleviate the workload of nurse, thus 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 is punctured into Ink vessel transfusing together with nook closing member, when after the whole intravasation of conduit, withdraw out nook closing member, only the catheter retaining of softness is carried out infusion treatment at Ink vessel transfusing.
Remaining needle is divided into open and closed, and safety (anti-pricking wound) and anti-reverse flow pattern.The shortcoming that current remaining needle exists is:
From the overall structure of remaining needle, product function is single, cannot realize many functions simultaneously, for hospital, it needs the remaining needle simultaneously adopting plurality of specifications, and needs to determine with reference to the use amount of each specification, model, brings very large trouble to the management of buying, stock; Medical personnel then need the remaining needle selecting different model, function according to different situations.
From each modular construction of remaining needle, in current Anti-stabbing type containing needle structure, it mainly comprises following several mode:
After thrusting, by pressing the button be arranged in remaining needle, by spring, interior pin being pulled into needle guard inside, being received in wherein (such as JP Laid-Open 10-52499 document, 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, needle point protection mechanism and outer Needle sleeve depart from, and the front end of interior pin is covered (such as patent publication No. CN 101011613A);
The shortcoming of above-mentioned two kinds of modes is: need to use spring and realize, if spring cannot reset smoothly in deformation, then cannot realize the protection to draw point needle point, therefore reliable not.
In anti-reverse flow pattern containing needle structure, Authorization Notice No. CN 201257220Y discloses a kind of reverse flow resistant indwelling needle, and it is by having the method for valve for preventing reverse-flow to carry out counterflow-preventing function at trocar catheter block internal fixtion; Also have part to adopt to arrange positive pressure connector to realize on Y shape remaining needle; All there is the single shortcoming of measure in both, the shortcoming that cannot close completely may appear in such as valve for preventing reverse-flow, and in positive pressure connector structure, if medical personnel extract excessive velocities when extracting transfusion device, positive pressure connector has little time to form malleation, also may occur blood back phenomenon, less reliable.
In addition, also there is certain defect in current positive pressure connector: such as application publication number CN 101912664A discloses a kind of single use positive pressure connector, it utilizes spring to provide positive pressure to positive pressure connector, very high to the rustless property of spring, safety and health request.
Therefore research and develop a kind of novel while there is Anti-stabbing, counterflow-preventing and working stability multi-functional remaining needle that is reliable, safety and sanitation is imperative.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of multi-functional remaining needle, can avoid excessive, the backflow of blood, carry out protection avoid medical personnel to stab when extracting draw point to 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 arranged vertically, the front end fixed connecting sleeve of casing seat, the cavity connects of sleeve pipe and 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, and on draw point seat, needle handle is held in setting, tip axially the stretching out through after batching pig, casing seat and sleeve pipe successively from the rear end of described casing seat along casing seat of draw point; It is characterized in that: in the cavity front portion of described casing seat, counterflow-preventing valve is housed; At described draw point seat built with the Anti-stabbing safety device without spring.
In some embodiments, described counterflow-preventing valve comprises tubular body and is located at the tapered end of its lower end, is provided with the wire communicated with the endoporus of tubular body cracks in the center bottom of tapered end; The footpath outward flange of the cavity front inner that can embed described casing seat is ordinatedly provided with on the top of tubular body; Have relative a pair pressing protruding in this arranged outside in the middle part of casing seat, the protruding and wire of counterflow-preventing valve front end of this pressing two ends of cracking are corresponding; Elastomeric material is adopted to make in the middle part of described counterflow-preventing valve and casing seat.
In some embodiments, described Anti-stabbing safety device comprises plug, multi-stage expansion cover and pullover, and described draw point seat is the tubular body of top closure, and axle center in draw point seat bottom connects the top of plug, and the lower end of plug is connected with draw point end; The flange of the lower end of this plug slides in the reducing of the upper end of inserting the interior one-level telescopic that multi-stage expansion overlaps, the flange of the lower end of the one-level telescopic of adjacent inner side all slides in the reducing on the one-level telescopic top of inserting adjacent outside, the lower end of outermost one-level telescopic is connected with pullover, this pullover outer peripheral face slides in the lower port of this draw point seat of insertion, is provided with for the through hole through draw point in this pullover axle center; When pull out pullover make multi-stage expansion overlap all stretch out after, draw point all enter multi-stage expansion cover inside.
In some embodiments, described pullover in be provided with the off-centre operation cone that elastomeric material makes, 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 the side of draw point, and the bottom of off-centre operation cone embeds in the mouth of pullover the inner ordinatedly.
In some embodiments, fixed by quick distachable anatomical connectivity between described pullover and casing seat.
In some embodiments, described quick distachable structure is: the front end center pullover at this arranges cylinder, the through hole through draw point is had in cylindrical axle center, and the terminus lumen matching size of cylinder external diameter and casing seat, and cylinder embed after casing seat inner chamber with casing seat end interference fit.
In some embodiments, described quick distachable structure is: arrange a pair claw in this pullover front end, be provided with the draw-in groove coordinated 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, the first end of the transparent threeway of Y shape and described soft pipe connection, and the second end installs 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 Luer inner conical connector, the lower surface of pressurized enclosure is connected with 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 pressurized enclosure, and be cylinder on the top of this silica gel plug, 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 upper end center of this plinth is provided with the annular projection that an external diameter is less than 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; The balance pipe communicated with ambient atmosphere is provided with in this annular projection; This plinth lower end is Rule outer cone plinth, is provided with the cylindrical taper for being connected with described external connector in the central authorities of this Rule outer cone plinth; Radial guiding discharge orifice is provided with between the outside of the root of this annular projection and this cylindrical taper sleeve upper end inside.
The invention has the advantages that: adopt the closed containing needle structure that counterflow-preventing valve, Anti-stabbing safety device, Needleless barotropic joint combine, closed structure can anti-Hemostatic Oral Liquid be excessive pollutes.Adopt Anti-stabbing safety device protection draw point, stab medical personnel when avoiding draw point to extract and catch.Combined by counterflow-preventing valve and Needleless barotropic joint and carry out the counterflow-preventing duplicate protection of blood; single measure is avoided to occur easy unexpected situation; safe and reliable; avoid the problem that blood backflow brings; without the need to using heparin to carry out positive pressure tube sealing after transfusion every day terminating, exempting the trouble of washing pipe of again infusing, greatly reducing the tedious work time of medical personnel; increase work efficiency, reduce the tension of patient.The use of Needleless barotropic joint, makes only to need the liquid medicine filter of transfusion device directly to inject Needleless barotropic joint during transfusion just passable, removes scalp acupuncture from, economize on resources.Meanwhile, Anti-stabbing safety device is without spring Anti-stabbing safety device, and Needleless barotropic joint is without spring Needleless barotropic joint, avoids spring structure to bring corrosion problem, safety and sanitation more, guarantees that remaining needle working stability is reliable.
In addition, in the middle part of the casing seat that elastomeric material is made, outer wall is provided with a pair and cracks corresponding projection with counterflow-preventing valve front end, effect is: when needs are drawn blood, this is pinched to projection by medical personnel, counterflow-preventing valve is opened by force, without the need to doing puncture blood drawing in addition, reduce patient pain to greatest extent.
In outermost telescopic protective cover, arrange off-centre operation cone, after can entering telescopic protective cover for avoiding reinforcing bar, telescopic protective cover retraction under deadweight or External Force Acting causes reinforcing bar again to stretch out, and guarantees the safety of medical personnel.
Fixed by quick distachable anatomical connectivity between pullover and casing seat, when avoiding puncture, casing seat and draw point seat misplace, throw off and cause puncture failure; When also avoiding extracting draw point out, in the incomplete retraction telescopic protective cover of draw point, namely there is pullover situation about coming off, improve security performance.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the multi-functional remaining needle of the present invention.
Fig. 2 is the axial sectional structure schematic diagram of thimble assembly of the present invention.
Fig. 3 is the enlarged drawing (broken section) of counterflow-preventing valve in Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the sectional structure schematic diagram of draw point assembly and Anti-stabbing safety device in the present invention.
Fig. 6 puts the working state schematic representation of stabbing safety device in Fig. 5.
Fig. 7 is the outline drawing of Needleless barotropic joint in the present invention.
Fig. 8 is the sectional structure schematic diagram of Needleless barotropic joint in the present invention.
Fig. 9 is the B-B sectional view of Fig. 8.
Figure 10 is the C-C sectional view of Fig. 8.
Figure 11 is the upward view of pressurized enclosure in Fig. 7-Fig. 9.
Detailed description of the invention
As Figure 1-Figure 11, the multi-functional remaining needle of the present invention, comprises the thimble assembly 1 and 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 arranged vertically, the front end fixed connecting sleeve 12 of casing seat 11, the cavity connects of sleeve pipe 12 and 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.Flexible pipe 3 can arrange hemostatic clamp.
In the present embodiment, external connector 4 is the transparent threeway of a Y shape, and the first end of the transparent threeway of Y shape is communicated with flexible pipe 3, and the second end installs calparine cap or block, and the 3rd end is then 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 end, draw point seat 22 is arranged and holds needle handle 28, and the tip of draw point 21 can axially stretching out through after batching pig 13, casing seat 11 and sleeve pipe 12 from casing seat 11 end along casing seat 11 successively.
In the present invention, also comprise counterflow-preventing valve 14, Anti-stabbing safety device, Needleless barotropic joint 5.Wherein, counterflow-preventing valve 14 is arranged on the front portion in casing seat 11, and is located axially at flexible pipe 3 front end be communicated with casing seat 11 at casing seat 11.Anti-stabbing safety device is arranged in draw point seat; And Anti-stabbing safety device is without spring Anti-stabbing safety device, Needleless barotropic joint 5 is without spring Needleless barotropic joint.
See Fig. 3 and Fig. 4, described counterflow-preventing valve 14 comprises the tapered end 142 being located at tubular body lower end, is provided with the wire communicated with the endoporus 143 of tubular body cracks 144 in the center bottom of tapered end 142.The footpath outward flange 141 of the cavity front inner that can embed described casing seat 11 is ordinatedly provided with on the top of tubular body.A pair relative pressing projection 15 is had in this arranged outside in the middle part of casing seat 11, this pressing protruding 15 and the wire of counterflow-preventing valve 14 front end 144 two ends of cracking are corresponding, so that extrude this to protruding 15 time, the two ends that counterflow-preventing valve 14 front end wire is cracked can be extruded, and then enlarged openings degree.
Described counterflow-preventing valve 14 adopts good springiness and the resin material of softness is made, and the middle part of casing seat 11 adopts elastomeric material to make.
The operation principle of counterflow-preventing valve 14 is: before puncture, draw point 21 along casing seat 11 axially from casing seat 11 end through batching pig 13, casing seat 11, the cracking and stretch out after sleeve pipe 12 of counterflow-preventing valve 14; After puncture, draw point 21 is extracted, and counterflow-preventing valve 14 automatically closes immediately under elastic reaction, the wedge structure of himself, avoids being opened under the blood pressure of backflow, improves the reliability of counterflow-preventing; Transfusion state, under the pressure effect of injection, cracking of counterflow-preventing valve 14, opens again automatically, allows injection enter vein by casing seat 11 and sleeve pipe 12 smoothly, and then automatically closes after infusion-completed.
See Fig. 5 and Fig. 6, in the present embodiment, described Anti-stabbing safety device 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 bottom connects the top (rear end) of plug 23, and the lower end (front end) of plug 23 is connected with draw point 21 end.The flange 231 of the lower end of this plug 23 slides in the reducing of the upper end of inserting the interior first order telescopic 24 that multi-stage expansion overlaps, the flange 251 of the lower end of the second level telescopic 25 of adjacent inner side all slide the one-level telescopic top of inserting adjacent outside reducing in (this embodiment only has 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 in the lower port of this draw point seat 22 of insertion, be provided with for the through hole (centre bore of the cylinder 261 namely protruded) through draw point downwards in this axle center of pullover 26, when pull out pullover 26 two-stage telescopic 24 and 25 is all stretched out after, draw point 21 all enters the inside that (covering) overlaps at multi-stage expansion, play shielding draw point 21 effect (see Fig. 6).
Also can be provided with the off-centre operation cone 27 that elastomeric material is made in described pullover 26, have oblique through hole 271 in the bottom center of this off-centre operation cone 27 to eccentric conical tip, the aperture of through hole 271 is slightly larger than the external diameter of draw point 21.This conical tip is towards the side (top in 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.
Can be fixed by quick distachable anatomical connectivity between pullover 26 and casing seat 11, make draw point 21 stretching into after in casing seat 11, pullover 26 are connected and fixed with casing seat 11, and when avoiding puncture, casing seat 11 and draw point seat 22 misplace, throw off and cause puncture failure.When avoiding extracting draw point 21 out, namely pullover 26 do not cover draw point 21 comes off simultaneously.
Described quick distachable structure can be: arrange cylinder 261 at the center of pullover 26, cylinder 261 center has the through hole holding draw point 21 and pass through, and the terminus lumen matching size of cylinder external diameter and casing seat 11, and make cylinder embed after casing seat 11 inner chamber with casing seat 11 end interference fit, certainly.Cylinder 261 and casing seat 11 also can be connected by the known demountable structure of bayonet socket and so on, such as, arrange a pair claw in the front end of pullover 26, at the built-in draw-in groove coordinated with claw of the terminus lumen of casing seat 11, repeat no more here.
It will be understood by those skilled in the art that above-mentioned multi-stage expansion cover is only 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, instead of be confined to pullover 26.
Anti-stabbing safety device operation principle is:
Puncture state: under telescopic is in contraction state, first telescopic 24, second telescopic 25 and pullover 26 is contracted in draw point seat 22, draw point 21 exposes draw point seat 22 through pullover 26, draw point 21 is simultaneously through off-centre operation cone 27, there is compressional deformation in the rectification making off-centre operation cone 27 be subject to draw point 21, the terminus lumen that the cylinder of pullover 26 embeds casing seat 11 is connected with casing seat 11 in pullover 26.
As shown in Figure 6, after puncture, upwards pull draw point seat 22, plug 23 and draw point 21 are extracted out to away from casing seat 11 direction, under telescopic is in extended configuration, first telescopic 24, second telescopic 25 trails to moving away from casing seat 11 direction along mandrel axis with plug 23, after the needle point of draw point 21 bounces back the off-centre operation cone 27 leaving in pullover 26 always, off-centre operation cone 27 affranchises state under elastic deformation effect, the through hole top of off-centre operation cone 27 is made to depart from the axis of draw point 21, draw point 21 cannot stretch out outside the 3rd telescopic 26 through the through hole of off-centre operation cone 27 again, draw point 21 couples of medical personnel are avoided to stab.
See 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 Luer inner conical connector 512, the lower surface of pressurized enclosure 51 is connected with the upper surface of plinth 52, is provided with that several is circumferentially uniformly distributed, axial guiding gutter 511 at the inwall of the equal-diameter part of pressurized enclosure 51.The profile of the silica gel plug 53 of hollow and the interior shape of pressurized enclosure 51 coincide, and be located in pressurized enclosure 51, be cylinder (top closure by 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.In a free state, the inwall of pressurized enclosure 51 is close in its stage casing to silica gel plug 53, and the upper intracavity that upper end can embed pressurized enclosure 51 forms reliable hermetically-sealed construction.
The upper end center of this plinth 52 is provided with the annular projection 523 that an external diameter is less than pressurized enclosure 51 cavity of resorption internal diameter, and the lower end of described silica gel plug 53 is bonded in the inner peripheral surface of this annular projection 523.Two balance pipe 521(communicated with ambient atmosphere are provided with for axial, see Fig. 9) in the annular projection 523 of plinth 52; This plinth 52 lower end is Rule outer cone plinth, is provided with the cylindrical taper 524 for being connected with described external connector in the central authorities of this Rule outer cone plinth; Between the outside of the root of this annular projection 523 and this inside, cylindrical taper 524 upper end, be provided with radial guiding discharge orifice 522, the outer end of radial guiding discharge orifice 522 is corresponding with the guiding gutter 511 inside pressurized enclosure 51.
The operation principle of Needleless barotropic joint 5 is:
Under free state, the upper end of the upper end of silica gel plug 53, middle part and pressurized enclosure 51, middle part inner chamber coordinate to be formed and seal, and positive pressure connector is closed.
When using syringe, syringe is connected with the upper end of pressurized enclosure 51 by Rule outer cone joint 512, the epicoele of the cylindrical taper press-in pressurized enclosure 51 of syringe Rule outer cone joint 512, and extrude the top of silica gel plug 53, the upper end of silica gel plug 53 is compressed inwardly, make its inner chamber by balance pipe 521 aerofluxus, relieve the sealing between silica gel plug 53 pairs of pressurized enclosures 51 and silica gel plug 53, thus define by the gap between the upper inner of pressurized enclosure 51 and 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 resets at elastic deformation power stretch under application, continue and pressurized enclosure 51 fitted seal, simultaneously, owing to causing extruding to pressurized enclosure 51 inner chamber when silica gel plug 53 stretches, make to produce a malleation (closing flow channel for liquids) to aforesaid liquid runner, and the liquid in flow channel for liquids is continued to advance, and then avoid blood backflow.
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 puncture, extract draw point 21, sleeve pipe 12 is stayed intravenous.
When extracting draw point 21, covered outside draw point 21 by Anti-stabbing safety device, avoid draw point 21 to stab medical personnel and cause blood contamination.
During transfusion, the infusion channel that syringe or transfusion device are formed by external connector 4, flexible pipe 3, casing seat 11 and sleeve pipe 12 is infused.
When removing syringe or transfusion device, Needleless barotropic joint 5 forms malleation, is advanced by the liquid in infusion channel to venous side; Meanwhile, counterflow-preventing valve 14 can be closed when extracting transfusion device immediately medical personnel, avoids blood backflow, avoids extracting that transfusion device is too fast makes Needleless barotropic joint 5 have little time to form malleation to occur blood back.
Claims (7)
1. a 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 arranged vertically, the front end fixed connecting sleeve of casing seat, the cavity connects of sleeve pipe and 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, and on draw point seat, needle handle is held in setting, tip axially the stretching out through after batching pig, casing seat and sleeve pipe successively from the rear end of described casing seat along casing seat of draw point; It is characterized in that: in the cavity front portion of described casing seat, counterflow-preventing valve is housed; At described draw point seat built with the Anti-stabbing safety device without spring; Described Anti-stabbing safety device comprises plug, multi-stage expansion cover and pullover, and described draw point seat is the tubular body of top closure, and axle center in draw point seat bottom connects the top of plug, and the lower end of plug is connected with draw point end; The flange of the lower end of this plug slides in the reducing of the upper end of inserting the interior one-level telescopic that multi-stage expansion overlaps, the flange of the lower end of the one-level telescopic of adjacent inner side all slides in the reducing on the one-level telescopic top of inserting adjacent outside, the lower end of outermost one-level telescopic is connected with pullover, this pullover outer peripheral face slides in the lower port of this draw point seat of insertion, is provided with for the through hole through draw point in this pullover axle center; When pull out pullover make multi-stage expansion overlap all stretch out after, draw point all enter multi-stage expansion cover inside; Described pullover in be provided with the off-centre operation cone that elastomeric material makes, 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 the side of draw point, and the bottom of off-centre operation cone embeds in the mouth of pullover the inner ordinatedly.
2. multi-functional remaining needle according to claim 1, is characterized in that: described counterflow-preventing valve comprises tubular body and is located at the tapered end of its lower end, is provided with the wire communicated with the endoporus of tubular body cracks in the center bottom of tapered end; The footpath outward flange of the cavity front inner that can embed described casing seat is ordinatedly provided with on the top of tubular body; In the middle part of this casing seat, arranged outside has relative a pair pressing protruding, and the protruding and wire of counterflow-preventing valve front end of this pressing two ends of cracking are corresponding; Elastomeric material is adopted to make in the middle part of described counterflow-preventing valve and casing seat.
3. multi-functional remaining needle according to claim 1, is characterized in that: fixed by quick distachable anatomical connectivity between described pullover and casing seat.
4. multi-functional remaining needle according to claim 3, it is characterized in that: described quick distachable structure is: the front end center pullover at this arranges cylinder, the through hole through draw point is had in cylindrical axle center, and the terminus lumen matching size of cylinder external diameter and casing seat, and cylinder embed after casing seat inner chamber with casing seat end interference fit.
5. multi-functional remaining needle according to claim 3, is characterized in that: described quick distachable structure is: arrange a pair claw in this pullover front end, be provided with the draw-in groove coordinated with this claw in the inner wall at end of casing seat.
6. multi-functional remaining needle according to claim 1, it is characterized in that: described external connector is the transparent threeway of a Y shape, the first end of the transparent threeway of Y shape and described soft pipe connection, the second end installs calparine cap or block, and the 3rd end is connected with a Needleless barotropic joint by female Luer.
7. multi-functional remaining needle according to claim 6, 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 Luer inner conical connector, the lower surface of pressurized enclosure is connected with 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 pressurized enclosure, and be cylinder on the top of this silica gel plug, 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 upper end center of this plinth is provided with the annular projection that an external diameter is less than 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; The balance pipe communicated with ambient atmosphere is provided with in this annular projection; This plinth lower end is Rule outer cone plinth, is provided with the cylindrical taper for being connected with described external connector in the central authorities of this Rule outer cone plinth; Radial guiding discharge orifice is provided with between the outside of the root of this annular projection and this cylindrical taper sleeve upper end inside.
Priority Applications (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 |
| PCT/CN2013/078311 WO2014198077A1 (en) | 2013-06-14 | 2013-06-28 | Multifunctional indwelling needle |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310096694.9 | 2013-03-25 | ||
| CN2013100966949 | 2013-03-25 | ||
| CN201310096694 | 2013-03-25 | ||
| CN201310234189.6A CN103285450B (en) | 2013-03-25 | 2013-06-14 | Multifunctional indwelling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103285450A CN103285450A (en) | 2013-09-11 |
| CN103285450B true CN103285450B (en) | 2015-05-27 |
Family
ID=49087330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310234189.6A Active CN103285450B (en) | 2013-03-25 | 2013-06-14 | Multifunctional indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103285450B (en) |
Families Citing this family (21)
| 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 |
| CN103691031A (en) * | 2013-12-16 | 2014-04-02 | 苏州林华医疗器械有限公司 | Safety venous indwelling needle |
| 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 |
| CN104001231B (en) * | 2014-05-15 | 2015-05-27 | 上海金塔医用器材有限公司 | Safety pump remaining needle |
| CN104162202B (en) * | 2014-06-10 | 2017-10-03 | 丁培琪 | Anti-reflux venous indwelling needle |
| KR101491953B1 (en) * | 2014-07-21 | 2015-02-11 | 송재원 | Medicine injection niddle unit having stick injury and infection preventing fuction |
| CN104984439A (en) * | 2015-06-19 | 2015-10-21 | 夏瑾梅 | Novel needle stick injury preventing type remaining needle |
| CN105147415B (en) * | 2015-06-23 | 2017-09-12 | 武瑞 | Milk cow vein Special remaining 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 |
| 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 |
| CN105771029B (en) * | 2016-04-29 | 2022-09-27 | 长江大学 | Anti-reflux positive pressure device |
| CN105920702A (en) * | 2016-06-28 | 2016-09-07 | 李卫林 | Rotary Y-shaped anti-thrombus indwelling needle |
| CN106110493A (en) * | 2016-07-25 | 2016-11-16 | 江苏华安吉泰医疗器械有限公司 | Needleless barotropic joint |
| 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 |
| US11147957B2 (en) | 2017-07-19 | 2021-10-19 | Becton, Dickinson And Company | Systems and methods to improve instrument guidance within an intravenous catheter assembly |
| CN107890595A (en) * | 2017-12-15 | 2018-04-10 | 西藏多欣医疗器械制造有限公司 | A kind of intravascular remaining needle of malleation liquid capsule self-sealing |
| CN107929871A (en) * | 2018-01-10 | 2018-04-20 | 程基才 | A kind of free style can retention transfusion system without draw point essence control |
| 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 |
| CN110975061B (en) * | 2019-11-19 | 2021-09-10 | 山东省千佛山医院 | Puncture-preventing remaining needle capable of continuously supplying liquid |
| CN115068741B (en) * | 2022-06-24 | 2024-01-12 | 苏州林华医疗器械股份有限公司 | Anti-backflow anti-needling indwelling needle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101879339B (en) * | 2010-07-12 | 2011-10-12 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN202478299U (en) * | 2012-02-07 | 2012-10-10 | 山东新华安得医疗用品有限公司 | Safety indwelling needle |
| CN102641529B (en) * | 2012-05-08 | 2014-04-16 | 江苏苏云医疗器材有限公司 | Indwelling needle |
| CN203342135U (en) * | 2013-03-25 | 2013-12-18 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
-
2013
- 2013-06-14 CN CN201310234189.6A patent/CN103285450B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103285450A (en) | 2013-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103285450B (en) | Multifunctional indwelling needle | |
| CN203342135U (en) | Multifunctional indwelling needle | |
| KR100540861B1 (en) | Needless valve | |
| CN202605411U (en) | Medical needle-free positive pressure joint | |
| CN206660203U (en) | A kind of medical plug-type no-needle transfusion joint | |
| CN205041878U (en) | Infusion of needleless malleation connects | |
| CN204671650U (en) | A kind of medical Needleless barotropic joint | |
| CN201088780Y (en) | Unidirectional positive pressure valve | |
| CN201356857Y (en) | Connector pipe type positive pressure vein remaining needle | |
| CN104815365A (en) | Medical needleless positive pressure joint | |
| CN103285449B (en) | Puncture-proof indwelling needle | |
| CN205948130U (en) | Non return formula is prevented embolism and is kept somewhere needle | |
| CN201295452Y (en) | Y-shaped safe arteriovenous indwelling needle with a needleless connector positive-pressure containment valve | |
| CN107684644A (en) | It is pre- to rush formula flushing syringe infusion pump combination bag | |
| CN109010990A (en) | A kind of novel infusion needleless joint | |
| CN214911612U (en) | Needleless airtight connecting piece | |
| CN108670374A (en) | One kind being used for cardiovascular interventional therapy device | |
| CN201356856Y (en) | Positive pressure vein remaining needle | |
| CN209865029U (en) | Intensive care sampling device | |
| CN101337105B (en) | I-form arteriovenous indwelling needle with positive pressure function | |
| CN204307149U (en) | Closed positive pressure remaining needle | |
| CN209137582U (en) | A kind of novel infusion needleless joint | |
| CN103656790B (en) | A kind of disposable counterflow-preventing bushing type intravenous infusion needle | |
| CN209679264U (en) | A kind of three chamber urinary catheters with connector for bladder douching | |
| AU2013392518B2 (en) | Multifunctional indwelling needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANG JIANLIN Free format text: FORMER OWNER: NANTONG HENGTAI MEDICAL EQUIPMENT CO., LTD. Effective date: 20150906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150906 Address after: 226500, No. 168 Zhenkang Garden Road, Rugao, Jiangsu, Nantong Patentee after: Zhang Jianlin Address before: 226500, No. 168 Zhenkang Garden Road, Rugao, Jiangsu, Nantong Patentee before: Nantong Hengtai Medical Equipment Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170621 Address after: 226500, No. 168 Zhenkang Garden Road, Rugao, Jiangsu, Nantong Patentee after: Nantong Hengtai Medical Equipment Co., Ltd. Address before: 226500, No. 168 Zhenkang Garden Road, Rugao, Jiangsu, Nantong Patentee before: Zhang Jianlin |