CN104162202A - Reverse-flowing-prevention venous indwelling needle - Google Patents
Reverse-flowing-prevention venous indwelling needle Download PDFInfo
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- CN104162202A CN104162202A CN201410256334.5A CN201410256334A CN104162202A CN 104162202 A CN104162202 A CN 104162202A CN 201410256334 A CN201410256334 A CN 201410256334A CN 104162202 A CN104162202 A CN 104162202A
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Abstract
The invention provides a novel reverse-flowing-prevention venous indwelling needle. The needle comprises an inner needle, an outer needle tube, an extension hose, a water-stopping clamp and an outer needle base. The inner needle is made of hard material and is provided with a blood returning groove, and the tail of the inner needle is connected with a puncturing needle base. One end of the extension hose is connected with a liquid injecting connector assembly, and the water stopping clamp is located outside the extension hose and used for controlling on-off of the extension hose. The first end of the outer needle base comprises a through hole, the second end of the outer needle base is connected with the other end of the extension hose, and the third end of the outer needle base comprises a seal part, and the seal part comprises an isolation combined part. The isolation combined part comprises two or more components. According to the novel reverse-flowing-prevention venous indwelling needle, because an isolation plug made of rubber silicon material is used, the risk of fracturing the outer needle rear base through propping is avoided; after being pulled out, the inner needle can puncture into the vein again through the isolation plug, intravenous dripping is achieved, and besides various operations such as blood drawing and pressure testing are convenient to perform.
Description
Technical field
The present invention relates to a kind of medical remaining needle, be specifically related to a kind of Anti-reflux venous indwelling needle.
Background technology
Intravenous drip is very extensive in clinical middle application, but each intravenous drip all needs skin penetrating, for the long-term patient who instils of needs, has both increased patient's misery, has increased nurse's workload, also can cause larger infection risk.
For addressing these problems, clinically for long-term patient, the critical patient etc. who instils of the needs remaining needles that use, after puncture once, can repeatedly instil at present more.As shown in Figure 1, it roughly comprises interior pin 1 for existing venous detaining needle or Anti-reflux venous indwelling needle structure, outer needle tubing 2, sheath 3, the outer needle stand 4 of Y shape, Paracentesis needle holder 6, batching pig 7, tongs 9, infusion tee pipe 10, wherein Paracentesis needle holder 6 is fixed on the afterbody of interior pin 1.Outer needle stand 4 first ends have through hole, and for holding interior pin 1 and outer needle tubing 2, outer needle tubing 2 can be fixedly connected with through hole; The second end connects prolongation flexible pipe 8; The 3rd end comprises sealing 5.Batching pig 7 is positioned at sealing 5.Interior pin 1 is made up of hard material (such as metal), and has blood back groove.Outer needle tubing 2 is made for flexible material, and it is attached on interior pin 1, but can be separated with interior pin 1.
When use, first 3 groups of sheaths are gone, hand-held Paracentesis needle holder 6, punctures interior pin 1 to bring together vein into into patient skin and by outer needle tubing 2, and then hand-held Paracentesis needle holder 6 extracts interior pin 1 backward, and outer needle tubing 2 is retained in vein.Batching pig 7 automatic rebounding after interior pin 1 is extracted seals up the pin hole that interior pin 1 stays, and prevents venous return, has also prevented that outside antibacterial, virus etc. from entering vein simultaneously.And outer needle tubing 2 forms transfusion path with extension tube 8, in the time of needs of patients transfusion (intravenous drip), only need to be by tee T 10 connecting hanging liquid bottles, without repeated puncture.
Can be found out by aforesaid operations process, the Main Function of batching pig 7 is to extract after vein when interior pin 1, seals up pin hole, prevents venous return, prevents that extraneous pathogenic bacteria, virus etc. from entering vein simultaneously.The performance that its automatic rebounding after interior pin 1 is extracted seals up pin hole is very crucial.Existing batching pig 7 materials are isoamyl glue.For making isoamyl glue play resilience and liquid-leakage preventing object, must increase its hardness, conventionally reach (Shao Shi 70-80 degree), make it to be compressed in the interior increase elasticity of sealing 5 and the object that plays liquid-leakage preventing.Because hardness is large, in the time making, it cannot be arranged in sealing 5 in advance, can only be in advance by indentation sealing portion 5 after its punching or section, then use glue bonding.This operating process itself can increase dangerous factor, because outer pin back seat uses PC resin manufacture more, for the compression of batching pig hardness, can cause sealing 5 to ftracture.
Using another unfavorable factor of high rigidity batching pig 7 is, once interior pin 1 is pulled out, just cannot again turn back to vein.This causes the function of existing remaining needle very single: only can be used for intravenous drip.Patient has used after remaining needle, encounters blood drawing and waits while operation, cannot utilize the outer needle tubing 2 in vein, still needs to do in addition venipuncture, has increased patient's misery.
Summary of the invention
The various shortcoming of existing remaining needle in view of the above, the object of the present invention is to provide a kind of novel Anti-reflux venous indwelling needle, for solve the outer pin back seat of existing remaining needle easily cracking, function singleness, extension tube cracky, easily cause the problems such as skin allergy.
For achieving the above object and other relevant objects, the invention provides the novel novel Anti-reflux venous indwelling needle that the invention provides, it is characterized in that, comprising: interior pin, to be made by hard material, and there is blood back groove, its afterbody is connected with Paracentesis needle holder; Outer needle tubing, it is made up of soft material, is attached to interior pin outward and can separates with interior pin; Extend flexible pipe, its one end connects fluid injection adapter assembly; Tongs, is positioned at and extends flexible pipe outside, for controlling the break-make that extends flexible pipe; Outer needle stand, its first end comprises through hole; Outer needle stand the second end connects the other end that extends flexible pipe; Outer needle stand the 3rd end comprises sealing, comprises isolation molectron in sealing; Wherein, isolation molectron comprises at least two assemblies.
Preferably, in above-mentioned Anti-reflux venous indwelling needle, isolation molectron comprises three assemblies; More preferably, isolation molectron can be made up of silica gel; More preferably, in three assemblies, at least one assembly is for comprising cavity.
As mentioned above, novel Anti-reflux venous indwelling needle of the present invention, owing to using the batching pig that adopts silica gel material to manufacture, has avoided cracking the risk of outer pin back seat; Interior pin can thrust vein again by batching pig after extracting, and realizes except intravenous drip, also facilitates the multiple operations such as blood drawing, pressure measurement; And according to preferred embodiment, owing to adopting clapper, abandon prolongation flexible pipe, avoided the variety of problems producing by extending flexible pipe.
Those skilled in the art, by by explanation and the accompanying drawing of following part, understand the above-mentioned advantage of thought of the present invention and generation thereof.
Brief description of the drawings
Figure 1 shows that the structure chart of existing remaining needle;
Figure 2 shows that the structure chart of the first embodiment of Anti-reflux venous indwelling needle of the present invention;
Figure 3 shows that the zoomed-in view of isolation molectron;
Figure 4 shows that barrier assembly cavity opening section figure;
Figure 5 shows that the optional structure chart of isolating the assembly 71,72 or 73 in molectron shown in Fig. 3;
Figure 6 shows that the another optional structure chart of isolating the assembly 71,72 or 73 in molectron shown in Fig. 3;
Figure 7 shows that the structure chart of the second embodiment of Anti-reflux venous indwelling needle of the present invention;
Figure 8 shows that a kind of check valve schematic diagram that Anti-reflux venous indwelling needle of the present invention is used.
Detailed description of the invention
Below by specific instantiation, embodiments of the present invention are described, but following embodiment only for the purpose of illustration, is not construed as limiting the invention.Those skilled in the art can make multiple modification or the change that does not deviate from thought of the present invention to following embodiment.
Diagram corresponding to following examples is only aid illustration basic conception of the present invention, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
A first aspect of the present invention, has abandoned existing integrated batching pig, and adopts isolation molectron.And isolation molectron adopts the less material of hardness, for example medical silica-gel, or the isoamyl glue that hardness is less (such as Shao Shi 30 degree left and right), replace existing isoamyl glue, (for example blood sampling) pierced through once again isolation molectron with blood taking needle and entered vein when needed like this, thereby avoids repeated puncture.
But owing to conventionally easily producing " fatigue " in the less materials'use of hardness, make material resilience variation, thereby cannot seal the pin hole of interior pin 1 completely, cause leakage.So isolation molectron of the present invention further comprises at least two barrier assemblies.Than the batching pig of one, the benefit that uses multiple barrier assemblies to be combined into isolation molectron is: if batching pig all-in-one-piece processed relies on the resilience of material to seal the pin hole staying after interior pin 1 is extracted completely.Adopt many parts to be combined into isolation molectron, because " fatigue " degree that each several part in use produces can be variant, and along with the insertion of interior pin 1, extract, the deformation difference of each several part, and each several part can produce small dislocation, the pin hole mutual dislocation of each several part like this, adds that the deformation of each several part makes up mutually, thereby reaches the object that prevents leakage.
embodiment 1
First consult Fig. 2 below and introduce the first embodiment of the present invention.For simplified illustration, in Fig. 2, or corresponding part identical with existing remaining needle function or structure in Fig. 1 used identical labelling.
According to thought of the present invention, in the preferred implementation shown in Fig. 2, isolation molectron 7 has adopted the silica gel that hardness is less, and has further comprised assembly 71,72 and 73 3 parts (seeing the zoomed-in view of Fig. 3).More preferably, assembly 71,72 and 73 in this example is all made into bowl-shape---there is a cavity, and arranged according to the mode shown in Fig. 2 (and Fig. 3): " the rim of a bowl " (being cavity opening) of assembly 71 is towards the afterbody of interior pin 1, and " the bowl end " (being cavity closing end) is towards the needle point direction of interior pin; The cavity opening of assembly 72 is relative with the cavity opening of assembly 71; The cavity closing end of the cavity opening orientating component 72 of assembly 73.
This shape design and the arrangement mode of assembly 71,72 and 73 have extra benefit: first, " fatigue " degree in use producing with three assemblies differs larger, the deformation producing in the time that interior pin 1 inserts or extracts and dislocation are more obvious, thus the pin hole of pin 1 in sealing better; The second, in the time that interior pin 1 inserts (in Fig. 2 for from top to bottom), the cavity closing section of assembly 72,73 is subject to power left, causes the cavity opening portion expansion of assembly 72,73, thereby strengthens the sealing effectiveness between assembly 72,73 and sealing 5; And in the time that interior pin 1 is extracted (in Fig. 2 for from the bottom to top), because the cavity closing end of assembly 71 is subject to power to the right, cause the cavity opening expansion of assembly 71, increase the sealing effectiveness between assembly 71 and sealing 5.Like this, in the insertion of interior pin 1, withdrawal process, all enter the sealing effectiveness that can strengthen between isolation molectron 7 and sealing 5.
More preferably, can be on the cavity wall of assembly 71,72 and 73 attached ribs 74, as shown in Figure 4.Fig. 4 is the cavity opening part sectional view of assembly 71, and it has shown three equally distributed ribs 74.Like this, in the time that interior pin 1 thrusts isolation molectron, support the side of body 74 extruding forces that can help absorbent assembly 71,72 and 73 to be subject to; And in the time that interior pin 1 is extracted, ribs 74 has been strengthened restoring force, can make up interior pin 1 pin hole causing that punctures, strengthen liquid-leakage preventing effect.
Be understandable that, the distribution of the quantity of the shape of said modules 71,72 and 73, arrangement mode, ribs is not construed as limiting the invention, and those skilled in the art can be according to actual needs, adopts other embodiment, for example, the quantity of assembly can be more or still less; Any one of assembly can adopt cylindrical, can have difform cavity, and as shown in Fig. 5-6, the quantity of cavity is also not limited to one; Can on part assembly, ribs be installed, also can all component be all installed by ribs; Assembly 71,72 and 73 opening can be relative, opposing etc.
embodiment 2
Consult Fig. 7 below and introduce the second embodiment of the present invention.In the embodiment of Fig. 7, isolation molectron 7 is identical with embodiment 1, therefore repeats no more.In the embodiment 2 of Fig. 7, outer needle stand 4 comprises elasticity needle stand 41 and tee T 42, and is provided with check valve 12 between elasticity needle stand 41 and tee T 42.Check valve 12 only can be along direction conducting from top to bottom in figure, and like this, when interior pin 1 enters after vein together with outer needle tubing 2, vein blood back is stopped in blood back cavity (check valve opening part) 14, prevents excessive blood back on the one hand; Thereby operator can observe pin 1 and outer needle tubing 2 in vein blood back situation judgement by blood back cavity 14 and whether enter vein on the other hand, and must judge whether interior pin 1 and outer needle tubing 2 have entered vein by the blood back situation in observation extension tube 8 needn't be when with existing remaining needle.One of such benefit is can reduce to cause the probability of losing blood because of flexible pipe breakage.
Owing to adopting check valve 12, embodiment 2 is just without extension tube 8, as shown in Figure 7, the side of tee T 42 directly connects chemicals dosing plant, and this has just been avoided the variety of problems of bringing because of extension tube 8: such as, existing extension tube 8 mostly is polrvinyl chloride (being called for short PVC) and makes, itself is more soft, easily damaged, once damaged, patient except having the risk of infection, the danger of losing blood in addition.And extension tube 8 total lengths reach 12 centimeters conventionally, make medical personnel in operation for being fixed, also need extra multiplex adhesive plaster, this easily causes skin allergy.
In addition, in order to coordinate interior pin 1 repeatedly to insert the operation of vein, in present embodiment, on elasticity needle stand 41, be also provided with one-way valve opens device 13.In the time that needs repeat interior pin 1 to thrust vein, only need to push one-way valve opens device 13, check valve 12 can be opened completely, and the interior pin 1 that thrusts and prevent of convenient interior pin 1 punctures check valve 12.The time that check valve 12 and one-way valve opens device 13 can need to use according to the size of interior pin 1, remaining needle etc. practical situation adopts multiple different structure.Hereinafter wherein a kind of detailed introduction of structure will be provided.
It should be noted that, in the present embodiment, outer needle stand 4 has adopted the split design of elasticity needle stand 41 and tee T 42, but this is not necessary.In practice, also outer needle stand can be made to the Y-shaped structure of one as in Example 1, and check valve 12 is installed on to the front end of Y-shaped structure.
In present embodiment, check valve 12 structures as shown in Figure 8.This routine check valve 12 is also made up of medical silica-gel material, and valve port position is rectangle cross section, and two rectangular one long limits become valve port to being combined into linear, and another side is that the camber line formation of indent slightly increases the effect of closing.It comprises cylinder 123, valve nozzle 125, and presser feet 128, presser feet 128 is mounted in the bottom of cylinder 123, plays sealing ring in the time packing remaining needle into, makes the liquid can seepage.Upper end at cylinder 123 forms valve nozzle 125 by the tapered region of two symmetries.Cylinder 123 is cylindrical in the present embodiment, and the height of the height of cylinder 123 and valve nozzle 125 is at same plane.Be separately installed with stressed circle 121 and stressed circle 127 at cylinder 123 and the both sides intersection of valve nozzle 125, both sizes are identical and be to determine by the size of cylinder 123.Because cylinder 123 is columniform, therefore utilize inside and outside arch power that cylindrical distortion produces to be controlled the closure of valve nozzle 125 by stressed circle 121,127, stressed circle 121,127 can increase resilience force, make up anti-blood back one-way valve because of material aging, and plastic deformation etc. inevitably factor cause seepage.For further increasing resilience force, can install respectively in the both sides of valve nozzle 125 and adjust rib 122, the adjustment rib size of both sides is identical and fixed according to injection draw point specification, is used for controlling the closure of valve nozzle 125, if draw point specification is that 24G just can uneasiness debug whole rib 122 above; Two columnar brackets 76 of tee T are supported in the middle of elasticity needle stand 41 check valve 12 balances, two V-type positioning guide columns 44 of tee T and the corresponding assembling of V-type positioning and guiding groove 124 of check valve, all pack four of elasticity needle stand 41 rear ends into by four equally distributed guiding groove (not shown) of elasticity needle stand 41 rear ends and lead to square hole (not shown), both have one section of close-connected linkage section tee T 42 and elasticity needle stand 41, and also have certain compression at thickness direction, therefore can play good sealing function.
The columnar bracket 76 of two above-mentioned symmetrical parallel forms the first increasing and closes structure tee T 42 is connected position with check valve 12 on, two columnar brackets 76 stretch into the cylindrical portion 123 inner side corresponding sites of check valve, preferably, distance between two columnar brackets 76 is slightly larger than the internal diameter of cylindrical portion 123, this corresponding site of cylindrical portion 123 inner sides can be stretched, the two opposite side intersections that can be stretched are just valve port 125 places, thereby drive two long limits of valve port 125 to expand outwardly, make valve port 125 very tightly closed, increased the closed strength of the linear valve port 125 that cracks.
On elasticity needle stand 41, be also provided with the second increasing and close structure, be symmetrically arranged with two boss in elasticity needle stand 41 inner sides, middle part, two stressed circles 121,127 in cylindrical portion outer wall both sides that boss lays respectively at check valve 12, two boss are applied equal pressure stressed circle 121,127 corresponding sites in described cylindrical portion outer wall both sides, and adjustment rib 122 by check valve by its pressure conduction to valve port 125, make valve port 125 very tightly closed, increased the closed strength of the linear valve port 125 that cracks.
Check valve 12 self is also provided with the 3rd increasing and closes structure, see Fig. 8, be two inclined-planes 126 in described valve nozzle 125 outsides, and in two inclined-planes 126, the angle on the inclined-plane of close cylindrical portion is greater than the angle near valve nozzle 125 front end inclined-planes, slightly larger than the angle of inner chamber in the angle that approaches valve nozzle portion 125 front end outsides, Thickness Ratio on 126 sections, the inclined-plane near cylindrical portion is large near the thickness of valve nozzle portion 125 front end bevel phase, and this double inclined surface structure can be strengthened the closed strength of valve port.
In addition, Fig. 7 Elastic needle stand 41 is connected as a single entity by buckle structure by the sheath 3 of front end and the tee T 42 of rear end.Before and after sheath 3 is outside, respectively there is an annular boss, so that operation; There are two technique aperture 32 (not shown) for cleaning method using at middle part; Rear inside has back-off 31 to be connected to elasticity needle stand 41 front ends, and the cone shape of its cone shape structure and elasticity needle stand 41 front ends is fitted completely, makes itself and elasticity needle stand 41 completely in same level, is not subject to any damage with pin in the protection of safety and outer pin; Outer needle tubing 2 is soft pin, it can be retained in human body for a long time, the rear portion of outer needle tubing 2 is connected with the small end interference of stainless fixing rivet 45, fixing rivet 45 funnels, its overall interference is embedded in the front end of elasticity needle stand 41, and block fixing rivet 45 by the back-off 21 of elasticity needle stand 41, it is completely fixed herein; Because elasticity needle stand 41 is elastomeric material, there is the one-way valve opens device 13 of staff finger-like at its middle part, can be used for controlling the switching of check valve 12; Elasticity needle stand 41 rear ends are connected with tee T 42 front ends, pack four of elasticity needle stand 41 rear ends into lead to square hole by four equally distributed guiding grooves of elasticity needle stand 41 rear ends, make elasticity needle stand 41 and tee T 42 being connected in one tightly; Tee T 42 tail ends have sealing 5, side connects chemicals dosing plant, sealing 5 inside of its tail end are isolation molectron 7, and pack two of tee T rear end by the end cap 16 of sealing 5 rear ends into by two of tee T rear end symmetrical guiding grooves and lead to square hole, sealing 5 is cylindric cavity body structure; The chemicals dosing plant of side is equipped with Bacteria-prevention cap 15, and Bacteria-prevention cap 15 is national standard, and its cooperation is Rule tapering of GB, completely exchanges and uses.
Through experiment test, by above-mentioned two kinds of reverse flow resistant indwelling needles that preferred implementation is made, be to toast after 7 days under the environment of 60 degrees Celsius in temperature, the pressure differential that sealing 5 is applied to 35PSI is tested, and the sealing effectiveness of isolation molectron 7 still can reach health ministry and U.S. FDA and organize desired seal standard; And when interior pin 1 repeated localised puncture 30 times, isolation molectron 7 does not still produce the phenomenon of leakage, and therefore perfection of the present invention has solved the variety of problems that existing remaining needle exists, thereby has very high practical value.
The foregoing is only the preferred embodiment of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.For example: the material for isolation molectron 7 is selected, can use the less materials of other hardness such as the isoamyl glue about medical silica-gel or Shao Shi 30 degree; The included component count of isolation molectron 7 also can be adjusted as required, and need not be confined to 3 assemblies in present embodiment; The shape of each several part also can be made cylinder, nested circular cone etc.For example, for the less occasion of interior pin 1 size (pin for baby), check valve 12 also can adopt the structure of simplification, for example, do not need to adjust rib; For the size of interior pin 1, the large or higher occasion of vein pressure, can suitably increase quantity and the intensity of adjusting rib.For interior pin 1, also can adopt other applicable hard material.
Also, within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. Anti-reflux venous indwelling needle, is characterized in that, comprising:
Interior pin, is made up of hard material, and has blood back groove, and its afterbody is connected with Paracentesis needle holder;
Outer needle tubing, it is made up of soft material, is attached to described interior pin outward and can separates with described interior pin;
Extend flexible pipe, its one end connects fluid injection adapter assembly;
Tongs, is positioned at described prolongation flexible pipe outside, for controlling the break-make of described prolongation flexible pipe;
Outer needle stand, its first end comprises through hole; Described outer needle stand the second end connects the other end of described prolongation flexible pipe; Described outer needle stand the 3rd end comprises sealing, comprises isolation molectron in described sealing;
Wherein, described isolation molectron comprises at least two assemblies.
2. Anti-reflux venous indwelling needle claimed in claim 1, is characterized in that, in described at least two assemblies, at least one assembly comprises cavity.
3. Anti-reflux venous indwelling needle claimed in claim 2, it is characterized in that, described at least two assemblies comprise the first assembly and the second assembly, described the first assembly and the second assembly include cavity, and the cavity opening of described the first assembly is towards the afterbody of described interior pin, and the cavity opening of described the second assembly and the cavity opening of described the first assembly are relatively or contrarily.
4. Anti-reflux venous indwelling needle claimed in claim 3, is characterized in that, described at least two assemblies also comprise the 3rd assembly, and described the 3rd assembly comprises cavity, and the cavity opening of described the 3rd assembly is towards the head of described interior pin.
5. Anti-reflux venous indwelling needle claimed in claim 2, is characterized in that, the wall portion of described cavity is provided with some ribs.
6. the Anti-reflux venous indwelling needle described in claim 1-5 any one, is characterized in that, one or more assembly in described isolation molectron is made up of silica gel.
7. an Anti-reflux venous indwelling needle, is characterized in that, comprising:
Interior pin, is made up of hard material, and has blood back groove, and its afterbody is connected with Paracentesis needle holder;
Outer needle tubing, it is made up of soft material, is attached to described interior pin outward and can separates with described interior pin;
Outer needle stand, its first end comprises through hole and chamber, in described chamber, comprises check valve; The second end of described outer needle stand connects chemicals dosing plant; The 3rd end of described outer needle stand comprises sealing, comprises isolation molectron in described sealing; Wherein, described isolation molectron comprises at least two assemblies.
8. Anti-reflux venous indwelling needle claimed in claim 7, is characterized in that, in described at least two assemblies, at least one assembly comprises cavity.
9. Anti-reflux venous indwelling needle claimed in claim 8, it is characterized in that, described at least two assemblies comprise the first assembly and the second assembly, described the first assembly and the second assembly comprise cavity, and the cavity opening of described the first assembly is towards the afterbody of described interior pin, and the cavity opening of described the second assembly and the cavity opening of described the first assembly are relatively or contrarily.
10. Anti-reflux venous indwelling needle claimed in claim 9, is characterized in that, described at least two assemblies also comprise the 3rd assembly, and described the 3rd assembly comprises cavity, and the cavity opening of described the 3rd assembly is towards the head of described interior pin.
11. Anti-reflux venous indwelling needles claimed in claim 8, is characterized in that, the wall portion of described cavity is provided with some ribs.
Anti-reflux venous indwelling needle described in 12. claim 7-11 any one, is characterized in that, one or more assembly in described isolation molectron is made up of silica gel.
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| CN201410256334.5A CN104162202B (en) | 2014-06-10 | 2014-06-10 | Anti-reflux venous indwelling needle |
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| CN201410256334.5A CN104162202B (en) | 2014-06-10 | 2014-06-10 | Anti-reflux venous indwelling needle |
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| CN104162202B CN104162202B (en) | 2017-10-03 |
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| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN106510729A (en) * | 2016-10-31 | 2017-03-22 | 中国人民解放军第三军医大学第附属医院 | Repeatedly blood-sampling indwelling needle and application method thereof |
| CN107961417A (en) * | 2017-12-28 | 2018-04-27 | 无锡顶点医疗器械有限公司 | A kind of insulin pump extrusion infusing pipeline structure |
| CN108403128A (en) * | 2018-03-24 | 2018-08-17 | 曹春荣 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
| CN108525103A (en) * | 2017-03-06 | 2018-09-14 | 迈得医疗工业设备股份有限公司 | The manufacturing method of hose and hose |
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| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN106510729A (en) * | 2016-10-31 | 2017-03-22 | 中国人民解放军第三军医大学第附属医院 | Repeatedly blood-sampling indwelling needle and application method thereof |
| CN106510729B (en) * | 2016-10-31 | 2019-05-17 | 中国人民解放军第三军医大学第一附属医院 | Repeatedly blood sampling remaining needle |
| CN108525103A (en) * | 2017-03-06 | 2018-09-14 | 迈得医疗工业设备股份有限公司 | The manufacturing method of hose and hose |
| WO2019019167A1 (en) * | 2017-07-28 | 2019-01-31 | 福建省百仕韦医用高分子股份有限公司 | Indwelling needle with indwelling air cavity capable of quickly observing blood return |
| CN107961417A (en) * | 2017-12-28 | 2018-04-27 | 无锡顶点医疗器械有限公司 | A kind of insulin pump extrusion infusing pipeline structure |
| CN108403128A (en) * | 2018-03-24 | 2018-08-17 | 曹春荣 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
| CN110507395A (en) * | 2019-08-30 | 2019-11-29 | 上海长征医院 | A kind of emergency treatment arteriorrhexis turn of tidal stream system |
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