CN103656790B - A kind of disposable counterflow-preventing bushing type intravenous infusion needle - Google Patents
A kind of disposable counterflow-preventing bushing type intravenous infusion needle Download PDFInfo
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- CN103656790B CN103656790B CN201310249777.7A CN201310249777A CN103656790B CN 103656790 B CN103656790 B CN 103656790B CN 201310249777 A CN201310249777 A CN 201310249777A CN 103656790 B CN103656790 B CN 103656790B
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- counterflow
- tubular body
- preventing
- valve
- casing seat
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- 238000001802 infusion Methods 0.000 title claims abstract description 18
- 238000001990 intravenous administration Methods 0.000 title claims abstract description 15
- 230000002265 prevention Effects 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000002411 adverse Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000008280 blood Substances 0.000 abstract description 4
- 210000004369 blood Anatomy 0.000 abstract description 4
- 208000035473 Communicable disease Diseases 0.000 abstract 1
- 230000001194 anti-hemostatic effect Effects 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 208000015181 infectious disease Diseases 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003182 parenteral nutrition solution Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 206010049976 Impatience Diseases 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229940127558 rescue medication Drugs 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of disposable counterflow-preventing bushing type intravenous infusion needle, including sheath assembly and draw point component；Its innovative point is：Further include counterflow-preventing valve, Anti-stabbing safety device, Needleless barotropic connector, wherein, the counterflow-preventing valve is arranged on casing seat lumen, and the hose front end connected with casing seat is located axially in casing seat, the Anti-stabbing safety device is arranged in draw point seat, and the Needleless barotropic connector is arranged on external connector；And Anti-stabbing safety device is no spring Anti-stabbing safety device, Needleless barotropic connector is no spring Needleless barotropic connector.Closed structure can anti-Hemostatic Oral Liquid be excessive pollutes；Draw point is avoided to stab medical staff's infectious disease when extracting；Counterflow-preventing duplicate protection, avoids single measure from easy unexpected situation occur, safe and reliable, avoids the problem that blood backflow is brought, and improves medical staff's work efficiency.Meanwhile non-spring structure avoids spring structure from bringing corrosion problem, more safety and sanitation, it is ensured that transfusion needle is stable and reliable in work.
Description
Technical field
It is more particularly to a kind of that there is Anti-stabbing, counterflow-preventing and stable and reliable in work, safety the present invention relates to a kind of transfusion needle
The disposable counterflow-preventing bushing type intravenous infusion needle of health.
Background technology
Intravenous infusion needle is also known as venous catheter needle, its due to can reduce patient because venipuncture repeatedly and caused by pain and
To the fear having an injection, mitigate impatience, easy to clinical application, anxious, the rescue medication of critical patient, mitigates the work of nurse
Amount, thus intravenous infusion needle is in wide clinical application.The building block of infusion needle core includes being retained in endovascular soft
Soft conduit/casing, and the guiding puncture needle core of stainless steel.Conduit and needle core punctured into together during use it is intravascular, when
After conduit fully enters blood vessel, needle core is withdrawn out, only by soft catheter retaining in the blood vessels so as to carry out infusion treatment.
Transfusion needle is divided into safety-type by function（Anti- pricking wound）, anti-reverse flow pattern and both combine.Current anti-reverse flow pattern
In infusion needle construction,
Such as Authorization Notice No. CN 201257220Y disclose a kind of transfusion needle, it passes through solid in trocar catheter block
Surely the method for having valve for preventing reverse-flow carries out counterflow-preventing function；Its there are measure it is single the shortcomings that, very likely there is nothing in valve for preventing reverse-flow
The shortcomings that method closes completely, causes the adverse current of blood, therefore research and develop a kind of new while has counterflow-preventing and working stability can
Lean on, the counterflow-preventing bushing type intravenous infusion needle of safety and sanitation it is imperative.
The content of the invention
, can the technical problem to be solved in the present invention is to provide a kind of disposable counterflow-preventing bushing type intravenous infusion needle
Pass through dual backflow preventing structure reliable and stable excessive, the reflux that avoid blood.
In order to solve the above technical problems, the technical scheme is that：A kind of disposable counterflow-preventing bushing type vein
Transfusion needle, including sheath assembly and draw point component, sheath assembly mainly include casing seat, casing, batching pig, and casing seat has edge
The cavity axially set, the front end fixed connecting sleeve of casing seat, casing are connected with casing seat ante-chamber, the back cavity sealing of casing seat
Batching pig, the lumen connection bypass interface of casing seat are connected, bypass interface can be connected by hose with external connector；Draw point component
Mainly include the draw point seat of draw point and draw point end, set in draw point seat and hold needle handle, the tip of draw point can be along the axis of casing seat
To from casing seat end pass through batching pig, casing seat and casing after stretch out；It is characterized in that：The cavity front portion of described sleeve pipe seat is set
Dual counterflow-preventing valve is equipped with, the dual counterflow-preventing valve is coaxially set before and after using preceding counterflow-preventing valve and rear counterflow-preventing valve
Put composition.
Further, the preceding counterflow-preventing valve is made of elastic material, it includes tubular body A and is located at its front end
The preceding valve in portion, tubular body A external peripheral surfaces are equipped with annular groove, and preceding valve is equipped with radial crack；In casing seat
Cavity front inner is equipped with the radially inner flange for the insertion tubular body A annular grooves that can coordinate；Counterflow-preventing valve after described
Including tubular body B made of use hard material and it is located at rear valve made of its front end and use elastic material, tubulose
The front end of main body B and rear valve insertion tubular body A rear cavities, and be adhesively fixed by adhesive, the rear end of tubular body B
Using the bell shape that can be close to residence and state casing seat corresponding position cavity inner wall；Valve cracks equipped with dentation afterwards.
Further, counterflow-preventing valve pipe before the rear counterflow-preventing valve tubular body B front ends are embedded in by disconnecting prevention structure
Shape main body A rear cavity, in the disconnecting prevention structure, the rear end of tubular body A is equipped with radially inner flange, and the front end of tubular body B is set
The ring-type outward flange of embedded tubular body A cavitys end can be coordinated with tubular body A radially inner flanges by having.
Further, the ring-type outward flange of the rear counterflow-preventing valve tubular body B uses cross section as ratchet shape
Unidirectional disconnecting prevention structure.
Further, the ring-type outward flange quantity is two or more and is coaxially disposed.
Further, the tubular body B rear ends bell shape size is slightly larger than casing seat corresponding position cavity diameter,
And two notches for contributing to deformation are symmetrically provided with bell shape.
The advantage of the invention is that：Using the forward and backward counterflow-preventing valve structure of double set, its forward and backward valve uses
Elastic material is made, and can automatically be closed under natural resiliency effect after extracting draw point, realize counterflow-preventing duplicate protection, avoid
Blood backflow problem caused by single counterflow-preventing valve can not close completely, it is safe and reliable,
Brief description of the drawings
Fig. 1 is the disposable counterflow-preventing bushing type intravenous infusion needle structure diagram of the present invention.
Fig. 2 is preceding counterflow-preventing valve front view in the present invention.
Fig. 3 is preceding counterflow-preventing valve top view in the present invention.
Fig. 4 is preceding counterflow-preventing valve profile in the present invention.
Fig. 5 is rear counterflow-preventing valve front view in the present invention.
Fig. 6 is rear counterflow-preventing valve bottom view in the present invention.
Fig. 7 is partial enlarged view A in Fig. 1.
Embodiment
As shown in Figure 1, disposable counterflow-preventing bushing type intravenous infusion needle mainly include sheath assembly, draw point component and
Counterflow-preventing valve：
Sheath assembly mainly includes casing seat 1, casing 2, batching pig 3, and casing seat 1 has axially disposed cavity,
The built-in stainless steel guiding cap with through hole of the ante-chamber of casing seat 1, the front end connecting sleeve 2 of casing seat 1, the interior end cap of casing 2
Connected mounted in the end of stainless steel guiding cap and with 1 ante-chamber of casing seat, the back cavity of casing seat 1 is tightly connected batching pig 3, casing seat
1 lumen connection bypass interface 4, bypass interface 4 can be connected by hose with external connector；
Draw point component mainly includes the draw point seat 6 of 5 end of draw point 5 and draw point, is set in draw point seat 6 and holds needle handle 7, draw point
5 tip is stretched out after can passing through batching pig 3, casing seat 1 and casing 2 from 1 end of casing seat along the axial direction of casing seat 1.
In the present invention, counterflow-preventing valve uses the dual counterflow-preventing valve for the cavity front portion for being arranged on casing seat 1, dual anti-
Adverse current valve is coaxially disposed composition before and after using preceding counterflow-preventing valve 8 and rear counterflow-preventing valve 9.
In the present embodiment,
The preceding counterflow-preventing valve 8 is made of elastic material, and as shown in Figure 2,3, 4, it includes tubular body A81 and sets
In the preceding valve 82 of its front end.Annular groove 83 is equipped with tubular body A81 external peripheral surfaces, the annular groove 83 is positioned at outer
Circumferential surface lower part, the radial direction for the insertion tubular body A annular grooves that can coordinate is equipped with the cavity front inner of casing seat 1
Inward flange 11；Preceding counterflow-preventing valve 8 is fixed in casing seat 1 using the cooperation of the radially inner flange 11 and annular groove.
Preceding valve 82 be equipped with it is radial crack 84, this is radial, and crack 84 can under nature or less pressure
It is kept closed.
As shown in Fig. 5,6,7, rear counterflow-preventing valve 9, including using tubular body B91 made of hard material and it is located at it
Front end simultaneously uses rear valve 92 made of elastic material（How valve 92 is connected with tubular body B91 after herein）,
The front end of tubular body B91 and rear valve 92 are embedded in tubular body A81 rear cavities, and are adhesively fixed by adhesive, tubulose
The rear end use of main body B91 can be close to the bell shape that 1 corresponding position cavity inner wall of casing seat is stated in residence, the horn mouth knot
Structure can play rear counterflow-preventing valve 9 support positioning action well in casing seat 1.The size of the bell shape is bigger
In casing seat corresponding position cavity diameter, and two notches 94 for contributing to deformation are symmetrically provided with bell shape so that
Horn mouth can smoothly deformation and be close in the inner cavity of casing seat 1.Valve 92 cracks 93 equipped with dentation afterwards, which cracks
93 can be kept closed under nature or less pressure.
In the present embodiment, in order to which preceding counterflow-preventing valve 8 and rear counterflow-preventing valve 9 preferably are connected fixation, rear counterflow-preventing
Counterflow-preventing valve tubular body A81 rear cavities, the disconnecting prevention structure before valve tubular body B91 front ends are embedded in by disconnecting prevention structure
In, the rear end of tubular body A81 is equipped with radially inner flange a, and the front end of tubular body B91 is equipped with can be with tubular body A81 footpaths
Inward flange a coordinates the ring-type outward flange b of embedded tubular body A81 cavitys end.
As the present invention more specifically embodiment, the ring-type outward flange b of rear counterflow-preventing valve tubular body B91 is using horizontal
Section is the unidirectional disconnecting prevention structure of ratchet shape, and ring-type outward flange b quantity is two and is coaxially disposed.The structure make it that rear defence is inverse
The ring-type outward flange b of stream valve tubular body B91 counterflow-preventing valve tubular bodies before smoothly crossing radially inner flange a and stretching into
While A81 rear cavities, play the role of good anti-dropout.
It will be understood by those skilled in the art that the pipe of counterflow-preventing valve tubular body B91 and preceding counterflow-preventing valve after above-mentioned
What the connection mode of shape main body A 81 was merely exemplary, be not limitation；Preceding valve 82, the slot opening form of rear valve 92
It is exemplary.
Dual counterflow-preventing valve operation principle：
Before puncture, draw point passes through batching pig, casing seat and rear counterflow-preventing valve along the axial of casing seat from casing seat end
Stretched out after film, the cracking of preceding counterflow-preventing valve from casing；Draw point is extracted after puncture, and preceding valve, rear valve are acted in natural resiliency
Under automatic closure immediately, carry out dual-seal, avoid being opened under the blood pressure of reflux, improve the reliability of counterflow-preventing；
Transfusion state, under the pressure effect of parenteral solution, due to being subject to larger pressure, it cracks then again automatic for preceding valve, rear valve
Open, allow parenteral solution to pass through casing seat and casing enters vein, and after infusion-completed, fluid pressure reduction, preceding valve, after
Valve is then automatically closed again.
Claims (5)
1. a kind of disposable counterflow-preventing bushing type intravenous infusion needle, including sheath assembly and draw point component, sheath assembly master
To include casing seat, casing, batching pig, casing seat has an axially disposed cavity, the front end fixed connecting sleeve of casing seat,
Casing is connected with casing seat ante-chamber, and the back cavity of casing seat is tightly connected batching pig, the lumen connection bypass interface of casing seat, bypass
Interface can be connected by hose with external connector；Draw point component mainly includes the draw point seat of draw point and draw point end, draw point seat
Needle handle is held in upper setting, the tip of draw point can along casing seat it is axial pass through batching pig, casing seat and casing from casing seat end after
Stretch out；It is characterized in that：The cavity front portion of described sleeve pipe seat is provided with dual counterflow-preventing valve, and the dual counterflow-preventing valve is adopted
With being coaxially disposed composition before and after preceding counterflow-preventing valve and rear counterflow-preventing valve；The preceding counterflow-preventing valve uses elastic material system
Into its preceding valve for including tubular body A and being located at its front end, tubular body A external peripheral surfaces are equipped with annular groove, preceding valve
Film is equipped with radial crack；The insertion tubular body A annular grooves that can coordinate are equipped with the cavity front inner of casing seat
Radially inner flange；
Counterflow-preventing valve includes using tubular body B made of hard material and is located at its front end and uses elastic material after described
Valve after made of material, the front end of tubular body B and rear valve insertion tubular body A rear cavities, and bonded by adhesive
Fixed, the rear end use of tubular body B can be close to the bell shape that casing seat corresponding position cavity inner wall is stated in residence；Back lobe
Film cracks equipped with dentation.
2. disposable counterflow-preventing bushing type intravenous infusion needle according to claim 1, it is characterised in that：The rear defence
Counterflow-preventing valve tubular body A rear cavities, the disconnecting prevention structure before adverse current valve tubular body B front ends are embedded in by disconnecting prevention structure
In, the rear end of tubular body A is equipped with radially inner flange, and the front end of tubular body B is equipped with can be with tubular body A radially inner flanges
Coordinate the ring-type outward flange of embedded tubular body A cavitys end.
3. disposable counterflow-preventing bushing type intravenous infusion needle according to claim 2, it is characterised in that：The rear defence
The ring-type outward flange of adverse current valve tubular body B uses unidirectional disconnecting prevention structure of the cross section for ratchet shape.
4. disposable counterflow-preventing bushing type intravenous infusion needle according to claim 3, it is characterised in that：The ring
Shape outward flange quantity is two or more and is coaxially disposed.
5. disposable counterflow-preventing bushing type intravenous infusion needle according to claim 2, it is characterised in that：The tubulose
Main body B rear ends bell shape size is slightly larger than casing seat corresponding position cavity diameter, and is symmetrically provided with bell shape
Two notches for contributing to deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310249777.7A CN103656790B (en) | 2013-06-21 | 2013-06-21 | A kind of disposable counterflow-preventing bushing type intravenous infusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310249777.7A CN103656790B (en) | 2013-06-21 | 2013-06-21 | A kind of disposable counterflow-preventing bushing type intravenous infusion needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103656790A CN103656790A (en) | 2014-03-26 |
| CN103656790B true CN103656790B (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310249777.7A Active CN103656790B (en) | 2013-06-21 | 2013-06-21 | A kind of disposable counterflow-preventing bushing type intravenous infusion needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN103656790B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107058B (en) * | 2015-09-22 | 2018-11-02 | 四川省人民医院 | A kind of ellipse shunt safety type remaining needle |
| CN112316293B (en) * | 2020-11-20 | 2022-05-31 | 焦作市人民医院 | Anti-reflux combinable extension pipe |
| CN119033448A (en) * | 2024-09-05 | 2024-11-29 | 江苏联晟医疗器械有限公司 | Human body abdominal cavity puncture outfit with fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077433A (en) * | 2006-05-25 | 2007-11-28 | 株式会社榎本 | Lien needle capable of preventing countercurrent flow effectively |
| CN202288533U (en) * | 2011-10-24 | 2012-07-04 | 上海形状记忆合金材料有限公司 | Transapical cardiac valve delivery system |
| CN102711895A (en) * | 2009-10-16 | 2012-10-03 | 泰尔茂株式会社 | Placement needle and placement needle assembly |
| CN202605427U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Remaining needle catheter component with anti-reverse-current valve |
| CN203342136U (en) * | 2013-06-21 | 2013-12-18 | 南通恒泰医疗器材有限公司 | Disposable anti-reflux sleeve type intravenous infusion needle |
-
2013
- 2013-06-21 CN CN201310249777.7A patent/CN103656790B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077433A (en) * | 2006-05-25 | 2007-11-28 | 株式会社榎本 | Lien needle capable of preventing countercurrent flow effectively |
| CN102711895A (en) * | 2009-10-16 | 2012-10-03 | 泰尔茂株式会社 | Placement needle and placement needle assembly |
| CN202288533U (en) * | 2011-10-24 | 2012-07-04 | 上海形状记忆合金材料有限公司 | Transapical cardiac valve delivery system |
| CN202605427U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Remaining needle catheter component with anti-reverse-current valve |
| CN203342136U (en) * | 2013-06-21 | 2013-12-18 | 南通恒泰医疗器材有限公司 | Disposable anti-reflux sleeve type intravenous infusion needle |
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| Publication number | Publication date |
|---|---|
| CN103656790A (en) | 2014-03-26 |
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