CN105013044B - One-way valve formula remaining needle - Google Patents
One-way valve formula remaining needle Download PDFInfo
- Publication number
- CN105013044B CN105013044B CN201510459936.5A CN201510459936A CN105013044B CN 105013044 B CN105013044 B CN 105013044B CN 201510459936 A CN201510459936 A CN 201510459936A CN 105013044 B CN105013044 B CN 105013044B
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- China
- Prior art keywords
- gap
- hose
- draw point
- protective case
- way valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses one-way valve formula remaining needles, one-way valve formula remaining needle, including hose and draw point, draw point is coaxially disposed in hose, the opening of hose end is obliquely installed, and with the oval end face of formation one, sealed set has diaphragm seal on oval end face, a gap is offered along its long axis direction on the centre position of diaphragm seal, the setting in gap meets：When there is the liquid of certain pressure in hose, gap open, liquid flowed by gap it is intravascular, when tube internal pressure disappears, gap closing.The one-way valve formula remaining needle avoids the occurrence of blood back thrombus and plugging and is conveniently operated.
Description
Technical field
The invention belongs to the field of medical instrument technology, and in particular to one-way valve formula remaining needle.
Background technology
Remaining needle clinically widely uses, but ordinary venous remaining needle easily leads to the generation of plugging due to many reasons,
So as to shorten indwelling time, the use value of remaining needle is reduced to a certain extent；It adds patient suffering and economy is negative
Carry on a shoulder pole or even affect being smoothed out for normal therapeutic；It hides some dangers for for phlebitis, thrombus.
Common remaining needle is using the circular opening of catheter proximal end, therefore it is steady open position to be open, and be easy to cause blood
Liquid backflows and obstruction conduit, even if continuous specification tube sealing method or carrying out pre- pipe-blocking-proof using positive pressure connector etc. at present
Occur, but if patient's puncture side limbs bending or firmly when can make intravascular pressure increase cause blood reflux.
The content of the invention
In view of the above shortcomings of the prior art, the present invention provides one kind to avoid the occurrence of blood back thrombus and plugging and conveniently
The one-way valve formula remaining needle of operation.
In order to solve the above technical problems, the present invention adopts the following technical scheme that, one-way valve formula remaining needle, including hose and
Draw point, draw point are coaxially disposed in hose, and the opening of hose end is obliquely installed, to form an oval end face, oval end
Sealed set has a diaphragm seal on face, offers a gap along its long axis direction on the centre position of diaphragm seal, the setting in gap is expired
Foot：When there is the liquid of certain pressure in hose, gap open, liquid flowed by gap it is intravascular, when tube internal pressure disappear
When, gap is closed.
Further, the diaphragm seal be located at the thickness ratio other parts of the part of gap both sides thickness it is thin.
Further, the angle of the ellipse end face and hose tube wall is α, and the angular range of angle α is 40~45 degree.
Further, the head of the draw point is detachably equipped with protective cap.
Further, it is also associated with tailfiber at the top of the protective cap.
Further, the afterbody integral type of the hose is connected with casing seat, and the lower end of casing seat is removably connected with protection
It covers, the extension tube being connected with its inner cavity is provided on the side wall of casing seat；Sealing-plug, the tail of draw point 4 are provided in casing seat
Portion is fixedly mounted on through sealing-plug on the fixing piece in protective case.
Further, the tube wall of the casing seat lower end is provided with " F " shape slot along its length, and " F " shape slot is included laterally
Fixed part and the portion that slides vertically, the front end of protective case are provided with head end, and head end is provided with and the matched protrusion of " F " shape slot,
The length of " F " shape slot meets the following conditions：By adjusting the position of protrusion different transverse direction fixed parts on " F " shape slot, can drive
Draw point moves up and down, and then the head of draw point is made to be stretched out or be retracted by gap.
Further, which is fixedly mounted in protective case.
Further, which is removably set in the protective case, and the handle wing is fixedly connected on the fixing piece,
Guide groove is offered on the protective case along its length, the handle wing is located in guide groove and walks to move up and down along it；
The protective case, the length of guide groove meet the following conditions：When the handle wing moves down in guide groove, draw point can be driven
In head retraction protective case.
One-way valve formula tool of needles staying on vein of the present invention has the following advantages：1. the end of hose is sealed by diaphragm seal, and is offered
One gap, during infusion, under the pressure of liquid, gap is opened, and after infusion, gap is closed, avoid backflow of blood enter it is soft
Pipe, avoids the generation of remaining needle plugging, phlebitis, thrombus etc..2. the diaphragm seal volume thickness wall of gap both sides is relatively thin, carrying out
During infusion, under the action of ambient pressure, it is easy to gap opening, infusion channel should be formed.3. the opening inclination of hose end is set
It puts, adds the streamlined of hose, reduce the resistance of intravascular blood flow and the friction to vascular wall.4. the point of the end of draw point
Sharp place is cased with protective cap, prevents draw point when through gap, by the edge torn of valve.5. the top of protective cap is provided with tail
Silk, when needing to remove protective cap, medical staff directly pulls tailfiber, you can removal protective cap avoids pollution.6. it improves
The use value and patient compliance of remaining needle.7. being provided with protective case, when extracting draw point, make in draw point retraction protective case,
It avoids stabbing medical staff.
Description of the drawings
Fig. 1 is the structure diagram of one-way valve formula remaining needle of the present invention；
Fig. 2 is the schematic diagram that one-way valve formula remaining needle draw point of the present invention passes through gap；
Fig. 3 is the side view of one-way valve formula retaining needle flexible tube of the present invention；
Fig. 4 is the structure diagram of hose and protective case in the present invention；
Wherein：1. hose；2. diaphragm seal；3. protective cap；4. draw point；5. tailfiber；6. extension tube；7. protective case；8. the handle wing；
9. casing seat；10. sealing-plug；11 head ends；" 12. F " shape slot；13. protrusion；14. fixing piece；15. guide groove.
Specific embodiment
As depicted in figs. 1 and 2, one-way valve formula remaining needle of the present invention, including hose 1 and draw point 4, draw point 4 is coaxially disposed
In in hose 1, the opening of 1 end of hose is obliquely installed, and with the oval end face of formation one, there is close sealed set on oval end face
Sealer 2, offers a gap 2-1 on the centre position of diaphragm seal 2 along its long axis direction, and the setting of gap 2-1 meets：Work as hose
When having the liquid of certain pressure in 1, gap 2-1 is opened, and liquid is intravascular by gap 2-1 inflows, when pressure disappears in hose 1
When, gap 2-1 is closed.The opening of 1 end of hose is obliquely installed, and ensure that the length of gap 2-1, to allow the liquid to swimmingly
Flow into blood vessel.As shown in figure 3, the angle of oval end face and 1 tube wall of hose is α, the angular range of angle α is 40~45 degree.
The thickness that diaphragm seal 2 is located at the thickness ratio other parts of the part of gap 2-1 both sides is thin.The head of draw point 4 is provided with protective cap
3, when the head of draw point 4 is pierced by by gap 2-1, protective cap 3 is used to prevent the head of draw point 4 from scratching the close of gap 2-1 both sides
Sealer 2.
One-way valve formula remaining needle of the present invention, diaphragm seal 2 and 1 integrally connected of hose, and the connection of diaphragm seal 2 and hose 1
Place smoothly transits.When being inserted into human vas, avoid hurting blood vessel, the top of protective cap 3 is additionally provided with tailfiber 5, and tailfiber 5 passes through seam
Gap 2-1 pulls to remove protective cap 3 to medical staff.Human hand does not have to contact directly protective cap 3, avoids pollution.
As shown in figure 4, one-way valve formula remaining needle of the present invention, the afterbody integral type of hose 1 is connected with casing seat 9, casing
The lower end of seat 9 is removably connected with protective case 7, and the extension tube 6 being connected with its inner cavity is provided on the side wall of casing seat 9；Set
Sealing-plug 10 is provided in tube socket 9, the afterbody of draw point 4 is fixedly mounted on the fixing piece in protective case 7 through sealing-plug 10
On 14.The tube wall of 9 lower end of casing seat is provided with " F " shape slot 12 along its length, and " F " shape slot 12 includes horizontal fixed part and erects
To sliding part, the front end of protective case 7 is provided with head end 11, and head end 11 is provided with and 12 matched protrusion 13 of " F " shape slot,
The length of " F " shape slot meets the following conditions：By adjusting the position of the different transverse direction fixed parts on " F " shape slot 12 of protrusion 13, energy
Draw point 4 is driven to move up and down, and then the head of draw point 4 is made to be stretched out or be retracted by gap 2-1.Fixing piece 14 is fixedly mounted on protection
In set 7.
As shown in Figure 1, being the structure diagram of one-way valve formula remaining needle of the present invention, in use, rotating protective case 7, make
Protrusion 13 with it is corresponding " F " shapes slot 12 corresponds to so that head end 11 is moved into casing seat 9, draw point 4 is made to be pierced by gap 2-1, then
Protective cap 3 is removed, is punctured to patient, after puncturing successfully, protective case 7 is rotated and removes, draw point 4 is pulled out.Then at hose 6
Infusion or injection, under the effect of the pressure, gap 2-1 is opened, liquid intravasation, and when external pressure disappears, gap 2-1 is closed
It closes.Anti- return blood forms thrombus, avoids patient and the risk of phlebitis occurs.
Embodiment 2
The present embodiment and the difference of embodiment 1 are that one-way valve formula remaining needle of the present invention, fixing piece 14 is removable to be set
It puts in the protective case 7, the handle wing 8 is fixedly connected on the fixing piece 14, is opened up along its length on the protective case 7
There is guide groove 15, the handle wing 8 is located in guide groove 15 and walks to move up and down along it；The protective case 7, the length of guide groove 15
Degree meets the following conditions：When the handle wing 8 moves down in guide groove 15, the head of draw point 4 can be driven to be retracted protective case 7
It is interior.Draw point 4 will not stab medical staff.
The application method of above-mentioned one-way valve formula remaining needle with embodiment 1 the difference is that：Removing protective case 7
Before, fixing piece 14 is slided backward so that draw point 4 is retracted in protective case 7.
Claims (3)
1. one-way valve formula remaining needle, which is characterized in that including hose (1) and draw point (4), the draw point (4) coaxial arrangement in
In hose (1), the opening of hose (1) end is obliquely installed, close on the ellipse end face with the oval end face of formation one
Envelope is provided with diaphragm seal (2)；
A gap (2-1) is offered along its long axis direction on the centre position of the diaphragm seal (2), gap (2-1's) sets
It is fixed to meet：When having the liquid of certain pressure in the hose (1), the gap (2-1) is opened, and liquid is by the gap (2-
1) inflow is intravascular, and when the interior pressure of the hose (1) disappears, the gap (2-1) is closed；
The thickness that the diaphragm seal (2) is located at the thickness ratio other parts of the part of gap (2-1) both sides is thin；
The ellipse end face and the angle of hose (1) tube wall are α, and the angular range of the angle α is 40~45 degree；
The head of the draw point (4) is detachably equipped with protective cap (3)；
Tailfiber (5) is also associated at the top of the protective cap (3)；
The afterbody integral type of the hose (1) is connected with casing seat (9), and the lower end of described sleeve pipe seat (9) is removably connected with guarantor
Sheath (7) is provided with the extension tube (6) being connected with its inner cavity on the side wall of described sleeve pipe seat (9)；In described sleeve pipe seat (9)
Sealing-plug (10) is provided with, the afterbody of the draw point (4) is fixedly mounted on through sealing-plug (10) in the protective case (7)
Fixing piece (14) on；
The tube wall of described sleeve pipe seat (9) lower end is provided with " F " shape slot (12) along its length, and " F " the shape slot (12) includes
Horizontal fixed part and portion is slid vertically, the front end of the protective case (7) is provided with head end (11), and the head end (11) is provided with
With " F " shape slot (12) matched protrusion (13), the length of " F " the shape slot meets the following conditions：By adjusting protrusion (13)
The position of different transverse direction fixed parts, can drive the draw point (4) to move up and down, and then make draw point (4) on " F " shape slot (12)
Head is stretched out or is retracted by gap (2-1).
2. one-way valve formula remaining needle according to claim 1, which is characterized in that the fixing piece (14) is fixedly mounted on
In protective case (7).
3. one-way valve formula remaining needle according to claim 2, which is characterized in that the fixing piece (14) is movably arranged
In the protective case (7), the handle wing (8) is fixedly connected on the fixing piece (14), side along its length on the protective case (7)
To guide groove (15) is offered, the handle wing (8) is located in guide groove (15) and walks to move up and down along it；The protective case
(7), the length of guide groove (15) meets the following conditions：When the handle wing (8) moves down in guide groove (15), steel can be driven
In the head retraction protective case (7) of pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459936.5A CN105013044B (en) | 2015-07-30 | 2015-07-30 | One-way valve formula remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459936.5A CN105013044B (en) | 2015-07-30 | 2015-07-30 | One-way valve formula remaining needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105013044A CN105013044A (en) | 2015-11-04 |
| CN105013044B true CN105013044B (en) | 2018-05-29 |
Family
ID=54403575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510459936.5A Expired - Fee Related CN105013044B (en) | 2015-07-30 | 2015-07-30 | One-way valve formula remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105013044B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109045399A (en) * | 2018-09-29 | 2018-12-21 | 封帆 | A kind of anti-venous return remaining needle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597000A (en) * | 2004-07-21 | 2005-03-23 | 张商钱 | Anti-countercurrent arteriovenous retention needle |
| CN202590066U (en) * | 2012-02-09 | 2012-12-12 | 张亚平 | Antithrombotic anticoagulant type safe indwelling needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN203342135U (en) * | 2013-03-25 | 2013-12-18 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204468877U (en) * | 2015-01-28 | 2015-07-15 | 韩艳娇 | The venous detaining needle of the anti-return blood blood coagulation of a kind of energy |
| CN204890813U (en) * | 2015-07-30 | 2015-12-23 | 西安交通大学第一附属医院 | Needle is kept somewhere to one -way valve formula |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080119703A1 (en) * | 2006-10-04 | 2008-05-22 | Mark Brister | Analyte sensor |
-
2015
- 2015-07-30 CN CN201510459936.5A patent/CN105013044B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597000A (en) * | 2004-07-21 | 2005-03-23 | 张商钱 | Anti-countercurrent arteriovenous retention needle |
| CN202590066U (en) * | 2012-02-09 | 2012-12-12 | 张亚平 | Antithrombotic anticoagulant type safe indwelling needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN203342135U (en) * | 2013-03-25 | 2013-12-18 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204468877U (en) * | 2015-01-28 | 2015-07-15 | 韩艳娇 | The venous detaining needle of the anti-return blood blood coagulation of a kind of energy |
| CN204890813U (en) * | 2015-07-30 | 2015-12-23 | 西安交通大学第一附属医院 | Needle is kept somewhere to one -way valve formula |
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| Publication number | Publication date |
|---|---|
| CN105013044A (en) | 2015-11-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |