CN203342135U - Multifunctional indwelling needle - Google Patents
Multifunctional indwelling needle Download PDFInfo
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- CN203342135U CN203342135U CN 201320339096 CN201320339096U CN203342135U CN 203342135 U CN203342135 U CN 203342135U CN 201320339096 CN201320339096 CN 201320339096 CN 201320339096 U CN201320339096 U CN 201320339096U CN 203342135 U CN203342135 U CN 203342135U
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- draw point
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- needle
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Abstract
The utility model relates to a multifunctional indwelling needle comprising a sleeve assembly and a steel needle assembly. The multifunctional indwelling needle is characterized by further comprising an anti-reflux valve, an anti-stab safety device and a needle-free positive-pressure connector. The anti-reflux valve is arranged in a middle cavity of a sleeve base and located at the front end of a hose communicated with the sleeve base in the axial direction of the sleeve base, the anti-stab safety device is disposed on a steel needle base, the needle-free positive-pressure connector is arranged on an external connector, the anti-stab safety device is a spring-free type anti-stab safety device, and the needle-free positive-pressure connector is a spring-free type needle-free positive-pressure connector. By means of the sealed structure, blood can be prevented from overflowing and causing pollution; the situation that medical staff are stabbed and infected by diseases when a steel needle is pulled out is avoided; by means of anti-reflux dual protection, accidents caused by a single measure are avoided, work is safe and reliable, problems brought by blood reflux are avoided, and work efficiency of the medical staff is improved. Meanwhile, by means of the spring-free structure, the rusting problem brought by a spring structure is avoided, and the multifunctional indwelling needle is safe and hygienic and guarantees work stability and reliability.
Description
Technical field
This utility model relates to a kind of remaining needle, and 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 claims again the venous cannula pin, it reaches the fear to having an injection owing to reducing the patient because of the misery that venipuncture causes 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 is punctured into together with nook closing member in blood vessel, after the whole intravasations of conduit, withdraw out nook closing member, thereby only soft catheter retaining is carried out in blood vessel to infusion treatment.
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, can't realize many functions simultaneously, for hospital, it need to adopt the remaining needle of plurality of specifications simultaneously, and need to determine with reference to the use amount of each specification, model, brings very large trouble to buying, stock's management; Medical personnel need to select according to different situations the remaining needle of different model, function.
From each modular construction of remaining needle, in Anti-stabbing type containing needle structure, it mainly comprises following several mode at present:
After thrusting, by pressing the button be arranged in remaining needle, by spring, interior pin is pulled into to needle guard inside, it is received in wherein to (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, needle point protection mechanism and outer Needle sleeve break away from, and the front end of interior pin is covered to (for example patent publication No. CN 101011613A);
The shortcoming of above-mentioned two kinds of modes is: need to use spring and realize, if spring smoothly deformation reset, can't realize the protection to the draw point needle point, so reliable not.
In anti-reverse flow pattern containing needle structure, Granted publication CN 201257220Y discloses a kind of reverse flow resistant indwelling needle, and it carries out the counterflow-preventing function by the method that is fixed with valve for preventing reverse-flow in the trocar catheter block; Also having the part employing, on the Y shape remaining needle, positive pressure connector is set realizes; All there is the single shortcoming of measure in both, and for example shortcoming that can't be fully closed 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 defect in current 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, very high to rustless property, the safety and health request of spring.
Therefore research and develop and a kind ofly have that Anti-stabbing, counterflow-preventing and working stability are reliable, the multi-functional remaining needle of safety and sanitation is imperative novel the time.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of multi-functional remaining needle, can avoid excessive, the backflow of blood, when extracting draw point, to draw point protection, avoids medical personnel to stab, and working stability is reliable, safety and sanitation.
For solving the problems of the technologies described above, the technical solution of the utility model 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, 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, on the draw point seat, arranges and holds needle handle, and axially stretch out through batching pig, casing seat and sleeve pipe from the rear end of described casing seat successively along casing seat at the tip of draw point; It is characterized in that: the counterflow-preventing valve is equipped with in the cavity front portion at described casing seat; At the in-built Anti-stabbing safety device that has or not spring of described draw point seat.
In some embodiments, described counterflow-preventing valve comprises tubular body and is located at the tapered end of its lower end, is provided with in the center bottom of tapered end the wire communicated with the endoporus of tubular body and cracks; Be provided with the anterior inboard footpath outward flange of the cavity that can embed ordinatedly described casing seat 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 counterflow-preventing valve front end two ends of cracking; Described counterflow-preventing valve and casing seat middle part adopt elastomeric material to make.
In some embodiments, described Anti-stabbing safety device comprises plug, multi-stage expansion cover and pullover, the tubular body that described draw point seat is top closure, and on the top of Nei axle center, draw point seat bottom connection plug, the lower end of plug is connected with the draw point end; 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, and at this, pullover axle center is provided with for the through hole through draw point; When pull out pullover make multi-stage expansion cover all stretch out after, draw point all enters the inside at the multi-stage expansion cover.
In some embodiments, described, be provided with the off-centre operation cone that elastomeric material is made in pullover, at bottom center to the eccentric conical tip of this off-centre operation cone, have oblique through hole, 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, between described pullover and casing seat, by the quick distachable structure, be connected and fixed.
In some embodiments, described quick distachable structure is: the front end center pullover at this arranges cylinder, have the through hole through draw point in cylindrical axle center, and the end inner cavity size of cylinder external diameter and casing seat matches, and cylinder embeds after the casing seat inner chamber and casing seat end interference fit.
In some embodiments, described quick distachable structure is: at this, pullover front end arranges a pair of claw, in the inner wall at end of casing seat, is provided with the draw-in groove coordinated with this claw.
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 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 Luer inner conical connector, the lower surface of pressurized enclosure is connected with the plinth upper surface, at the inwall of the equal-diameter part of pressurized enclosure, is provided with several equally distributed guiding gutter vertically; The profile of the silica gel plug of hollow and the interior shape of pressurized enclosure coincide, and are located in pressurized enclosure, on the top of this silica gel plug, are cylinder, 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 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; Be provided with the balance pipe communicated with ambient atmosphere in this annular projection; This plinth lower end is Rule outer cone plinth, in the central authorities of this Rule outer cone plinth, is provided with the cylindrical taper for being connected with described external connector; Be provided with the radial guiding discharge orifice between the outside of the root of this annular projection and this inside, cylindrical taper upper end.
The utility model has the advantage of: the closed containing needle structure that adopts counterflow-preventing valve, Anti-stabbing safety device, Needleless barotropic joint to combine, closed structure can be prevented that Hemostatic Oral Liquid is excessive and pollute.Adopt Anti-stabbing safety device protection draw point, stab medical personnel while avoiding draw point to extract and catch.The counterflow-preventing duplicate protection that combines and carry out blood by counterflow-preventing valve and Needleless barotropic joint; avoid single measure easy unexpected situation to occur; safe and reliable; the problem of avoiding blood backflow to bring; without using heparin to carry out positive pressure tube sealing, exempt the trouble of the washing pipe of again infusing after transfusion every day finishes, greatly reduced medical personnel's the loaded down with trivial details working time; increase work efficiency, reduce patient's tension.The use of Needleless barotropic joint, make the liquid medicine filter that only needs transfusion device while infusing directly inject the Needleless barotropic joint just passable, removes scalp acupuncture from, economizes on resources.Simultaneously, the Anti-stabbing safety device is without spring Anti-stabbing safety device, and the Needleless barotropic joint is without 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 made at elastomeric material middle part outer wall is provided with a pair of and the counterflow-preventing valve front end corresponding projection of cracking, effect is: when needs are drawn blood, pinch this to projection by medical personnel, the counterflow-preventing valve is opened and got final product by force, without doing in addition the puncture blood drawing, reduce to greatest extent patient's pain.
The off-centre operation cone is set in outermost telescopic protective cover, can be for after avoiding reinforcing bar to enter telescopic protective cover, telescopic protective cover retraction under deadweight or External Force Acting causes reinforcing bar again to stretch out, and guarantees medical personnel's safety.
Be connected and fixed by the quick distachable structure between pullover and casing seat, casing seat and the dislocation of draw point seat while avoiding puncturing, throw off and cause puncture failure; While avoiding extracting draw point out, at draw point, pullover situation about coming off do not occur in the retraction telescopic protective cover fully yet, improve security performance.
The accompanying drawing explanation
The population structure schematic diagram that Fig. 1 is the multi-functional remaining needle of this utility model.
Fig. 2 is the axial sectional structure schematic diagram of this utility model thimble assembly.
The enlarged drawing that Fig. 3 is counterflow-preventing valve in Fig. 2 (broken section).
The A-A cutaway view that Fig. 4 is Fig. 3.
The sectional structure schematic diagram that Fig. 5 is draw point assembly and Anti-stabbing safety device in this utility model.
Fig. 6 is put the working state schematic representation of stabbing safety device in Fig. 5.
The outline drawing that Fig. 7 is Needleless barotropic joint in this utility model.
The sectional structure schematic diagram that Fig. 8 is Needleless barotropic joint in this utility model.
The B-B cutaway view that Fig. 9 is Fig. 8.
The C-C cutaway view that Figure 10 is Fig. 8.
The upward view that Figure 11 is pressurized enclosure in Fig. 7-Fig. 9.
The specific embodiment
As Figure 1-Figure 11, the multi-functional remaining needle of this utility model, comprise the thimble assembly 1 and the draw point assembly 2 that complement one another, wherein:
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 is installed calparine cap or block, and the 3rd end is connected with Needleless barotropic joint 5 by female Luer.
In this utility model, 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 ends that are communicated with casing seat 11 at casing seat 11.The Anti-stabbing safety device is arranged in the draw point seat; And the Anti-stabbing safety device is without spring Anti-stabbing safety device, Needleless barotropic joint 5 is without spring Needleless barotropic joint.
Referring to Fig. 3 and Fig. 4, described counterflow-preventing valve 14 comprises the tapered end 142 that is located at the tubular body lower end, is provided with in the center bottom of tapered end 142 wire communicated with the endoporus 143 of tubular body and cracks 144.Be provided with the anterior inboard footpath outward flange 141 of the cavity that can embed ordinatedly described casing seat 11 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 counterflow-preventing 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 counterflow-preventing valve 14 front end wire are cracked, and then the enlarged openings degree.
Described counterflow-preventing 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 counterflow-preventing valve 14 is: before puncture, draw point 21 along casing seat 11 axially from casing seat 11 ends through batching pig 13, casing seat 11, counterflow-preventing valve 14 crack and sleeve pipe 12 stretch out; After puncture, draw point 21 is extracted, counterflow-preventing valve 14 auto-closing immediately under elastic reaction, and the wedge structure of himself, avoid being opened under the blood pressure refluxed, and improves the reliability of counterflow-preventing; Transfusion state, under the pressure-acting of injection, cracking of counterflow-preventing valve 14 opened again automatically, allows injection enter vein by casing seat 11 and sleeve pipe 12 smoothly, and automatically closes after infusion-completed.
Referring to Fig. 5 and Fig. 6, in the present embodiment, described Anti-stabbing safety device comprises plug 23, multi-stage expansion cover and pullover 26, the tubular body that described draw point seat 22 is top closure, connect the top (rear end) of plug 23 in draw point seat 22 Nei axle center, bottom, the lower end of plug 23 (front end) is connected with draw point 21 ends.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 only has 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, in this axle center of pullover 26, be provided with for the through hole through draw point (centre bore of the cylinder 261 protruded downwards), when pull out pullover 26 make two-stage telescopic 24 and 25 all stretch out after, draw point 21 all enters (covering) inside at multi-stage expansion cover, plays the effect (referring to Fig. 6) of shielding draw point 21.
Also can in described pullover 26, be provided with the off-centre operation cone 27 that elastomeric material is made, at the bottom center of this off-centre operation cone 27 to eccentric conical tip, have oblique through hole 271, 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 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.
Described quick distachable structure can be: 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 end inner cavity size of cylinder external diameter and casing seat 11 matches, and make cylinder embed after casing seat 11 inner chambers and casing seat 11 end 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 coordinated with claw of the end 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 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, rather than be confined to pullover 26.
Anti-stabbing safety device operation principle is:
The puncture state: telescopic is under contraction state, the first telescopic 24, the second telescopic 25 and pullover 26 are 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, the rectification that makes off-centre operation cone 27 be subject to draw point 21 is at pullover 26 interior generation compressional deformations, and the end inner chamber that pullover 26 cylinder embeds casing seat 11 is connected with casing seat 11.
As shown in Figure 6, after puncture, upwards pull draw point seat 22, plug 23 and draw point 21 are to extracting out away from casing seat 11 directions, telescopic is under extended configuration, the first telescopic 24, the second telescopic 25 with plug 23 along mandrel axis to away from casing seat 11 directions, moving and trail, after the needle point of draw point 21 bounces back always and leaves the off-centre operation cone 27 in pullover 26, off-centre operation cone 27 state that affranchises under the elastic deformation effect, make the through hole top of off-centre operation cone 27 depart from the axis of draw point 21, 21 through holes that can't again pass off-centre operation cone 27 of draw point stretch out outside the 3rd telescopic 26, avoid 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 Luer inner conical connector 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 even circumferential 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 pressurized enclosure 51, on the top of this silica gel plug 53, be cylinder (by the top closure of the silica gel plug of hollow 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 with the upper end of plinth 52 by binding agent.Silica gel plug 53 is under free state, and the inwall of pressurized enclosure 51 is close in its stage casing, and the upper intracavity that upper end can embed pressurized enclosure 51 forms reliable hermetically-sealed construction.
The center, upper end 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 diameters, and the lower end of described silica gel plug 53 is bonded in the inner peripheral surface of this annular projection 523.Be provided with two balance pipe 521(that communicate with ambient atmosphere for axially, referring to Fig. 9 in the annular projection 523 of plinth 52); These plinth 52 lower ends are Rule outer cone plinth, in the central authorities of this Rule outer cone plinth, are provided with the cylindrical taper 524 for being connected with described external connector; Be provided with radial guiding discharge orifice 522 between the outside of the root of this annular projection 523 and this cylindrical taper 524 inside, upper end, the outer end of radial guiding discharge orifice 522 is corresponding with the guiding gutter 511 of pressurized enclosure 51 inboards.
The operation principle of Needleless barotropic joint 5 is:
Under free state, the upper end of silica gel plug 53, middle part coordinate the formation sealing with upper end, the middle part inner chamber of pressurized enclosure 51, make positive pressure connector close.
While 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 silica gel plug 53, thereby formed by the upper inner of pressurized enclosure 51 and the gap between 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 and resets under the effect of elastic deformation power, continue and pressurized enclosure 51 fitted seal, simultaneously, while stretching due to silica gel plug 53, pressurized enclosure 51 inner chambers are caused to extruding, make the aforesaid liquid runner is produced to a malleation (having closed flow channel for liquids), and the liquid in flow channel for liquids is continued to advance, and then avoid blood backflow.
Operation principle of the present utility model 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 to intravenous.
While extracting draw point 21, by the Anti-stabbing safety device, cover outside draw point 21, avoid draw point 21 to stab medical personnel and cause blood contamination.
During transfusion, the infusion channel that syringe or transfusion device form by external connector 4, flexible pipe 3, casing seat 11 and sleeve pipe 12 is infused.
While removing syringe or transfusion device, Needleless barotropic joint 5 forms malleation, and the liquid in infusion channel is advanced to venous side; Simultaneously, counterflow-preventing valve 14 can be closed immediately medical personnel when extracting transfusion device, avoids blood backflow, 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. a 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 arranged 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, on the draw point seat, arranges and holds needle handle, and axially stretch out through batching pig, casing seat and sleeve pipe from the rear end of described casing seat successively along casing seat at the tip of draw point;
It is characterized in that: the counterflow-preventing valve is equipped with in the cavity front portion at described casing seat; At the in-built Anti-stabbing safety device that has or not spring of described draw point seat.
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 in the center bottom of tapered end the wire communicated with the endoporus of tubular body and cracks; Be provided with the anterior inboard footpath outward flange of the cavity that can embed ordinatedly described casing seat 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 counterflow-preventing valve front end two ends of cracking; Described counterflow-preventing 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: described Anti-stabbing safety device comprises plug, multi-stage expansion cover and pullover, the tubular body that described draw point seat is top closure, connect the top of plug in Nei axle center, draw point seat bottom, the lower end of plug is connected with the draw point end; 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, and at this, pullover axle center is provided with for the through hole through draw point; When pull out pullover make multi-stage expansion cover all stretch 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: described, be provided with the off-centre operation cone that elastomeric material is made in pullover, bottom center to eccentric conical tip in this off-centre operation cone has oblique through hole, 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: between described pullover and casing seat, by the quick distachable structure, be connected and fixed.
6. multi-functional remaining needle according to claim 5, it is characterized in that: described quick distachable structure is: the front end center pullover at this arranges cylinder, have the through hole through draw point in cylindrical axle center, and the end inner cavity size of cylinder external diameter and casing seat matches, and cylinder embeds after the casing seat inner chamber and casing seat end interference fit.
7. multi-functional remaining needle according to claim 5, it is characterized in that: described quick distachable structure is: at this, pullover front end arranges a pair of claw, in the inner wall at end of casing seat, is provided with the draw-in groove coordinated with this claw.
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, the first end of the transparent threeway of Y shape and described soft pipe connection, the 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 Luer inner conical connector, the lower surface of pressurized enclosure is connected with the plinth upper surface, at the inwall of the equal-diameter part of pressurized enclosure, is provided with several equally distributed guiding gutter vertically; The profile of the silica gel plug of hollow and the interior shape of pressurized enclosure coincide, and are located in pressurized enclosure, on the top of this silica gel plug, are cylinder, 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 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; Be provided with the balance pipe communicated with ambient atmosphere in this annular projection; This plinth lower end is Rule outer cone plinth, in the central authorities of this Rule outer cone plinth, is provided with the cylindrical taper for being connected with described external connector; Be provided with the radial guiding discharge orifice between the outside of the root of this annular projection and this inside, cylindrical taper upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320339096 CN203342135U (en) | 2013-03-25 | 2013-06-14 | Multifunctional indwelling needle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320137399 | 2013-03-25 | ||
| CN201320137399.9 | 2013-03-25 | ||
| CN 201320339096 CN203342135U (en) | 2013-03-25 | 2013-06-14 | Multifunctional indwelling needle |
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| Publication Number | Publication Date |
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| CN203342135U true CN203342135U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320339096 Withdrawn - After Issue CN203342135U (en) | 2013-03-25 | 2013-06-14 | Multifunctional indwelling needle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2014198077A1 (en) * | 2013-06-14 | 2014-12-18 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling 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 |
| CN105682721A (en) * | 2014-07-21 | 2016-06-15 | 崔根郁 | Fluid injection needle unit having stick injury and infection prevention function |
| CN108042880A (en) * | 2017-12-22 | 2018-05-18 | 苏州科技城医院 | A kind of safe type retention needle |
| CN109538848A (en) * | 2018-12-30 | 2019-03-29 | 中裕软管科技股份有限公司 | A kind of Novel oil gas transmission high-pressure hose and preparation method thereof |
-
2013
- 2013-06-14 CN CN 201320339096 patent/CN203342135U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2014198077A1 (en) * | 2013-06-14 | 2014-12-18 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN105682721A (en) * | 2014-07-21 | 2016-06-15 | 崔根郁 | Fluid injection needle unit having stick injury and infection prevention function |
| 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 |
| CN108042880A (en) * | 2017-12-22 | 2018-05-18 | 苏州科技城医院 | A kind of safe type retention needle |
| CN109538848A (en) * | 2018-12-30 | 2019-03-29 | 中裕软管科技股份有限公司 | A kind of Novel oil gas transmission high-pressure hose and preparation method thereof |
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