CN204890813U - Needle is kept somewhere to one -way valve formula - Google Patents
Needle is kept somewhere to one -way valve formula Download PDFInfo
- Publication number
- CN204890813U CN204890813U CN201520561285.6U CN201520561285U CN204890813U CN 204890813 U CN204890813 U CN 204890813U CN 201520561285 U CN201520561285 U CN 201520561285U CN 204890813 U CN204890813 U CN 204890813U
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- CN
- China
- Prior art keywords
- way valve
- gap
- valve formula
- protective sleeve
- remaining needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a needle is kept somewhere to one -way valve formula, needle is kept somewhere to one -way valve formula, including hose and steel needle, the steel needle is coaxial to be set up in the hose, and the opening slope of hose tip sets up to form an oval terminal surface, oval terminal surface upper seal is provided with the seal membrane, has seted up a gap along its major axis direction on the intermediate position of seal membrane, and the settlement in gap is satisfied: when having the liquid of certain pressure in the hose, open in the gap, and liquid is flowed in the blood vessel by the gap in, when soft pipe inner pressure disappeared, the gap was closed. This needle is kept somewhere to one -way valve formula avoids appearing back the blood thrombus and blocks up pipe, just convenient operation.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specifically related to one-way valve formula remaining needle.
Background technology
Remaining needle widely uses clinically, but ordinary venous remaining needle easily causes the generation of plugging due to many reasons, thus shortens indwelling time, reduces the use value of remaining needle to a certain extent; Add patient suffering and financial burden, even have impact on carrying out smoothly of normal therapeutic; For phlebitis, the hiding some dangers for of thrombosis.
Common remaining needle all adopts the opening of catheter proximal end circle, therefore opening is steady open position, easily cause blood reflux and obstruction conduit, even if constantly specification tube sealing method or use positive pressure connector etc. carry out the generation of pre-pipe-blocking-proof, if but patient's puncture side limbs are bending or intravascular pressure increase can be made when exerting oneself to cause blood reflux at present.
Utility model content
For above-mentioned the deficiencies in the prior art, this utility model provides a kind ofly avoids occurring blood back thrombosis and plugging and the one-way valve formula remaining needle of handled easily.
For solving the problems of the technologies described above, this utility model adopts following technical scheme, one-way valve formula remaining needle, comprise flexible pipe and draw point, draw point is coaxially arranged in flexible pipe, the opening of hose end is obliquely installed, to form an oval end face, on oval end face, sealing is provided with diaphragm seal, and the centre position of diaphragm seal offers a gap along its long axis direction, and the setting in gap meets: when there being the liquid of certain pressure in flexible pipe, gap is opened, liquid flows into Ink vessel transfusing by gap, and when tube internal pressure disappears, gap is closed.
Further, to be positioned at the thickness of other parts of Thickness Ratio of the part of both sides, gap thin for sealing film.
Further, the angle of this oval end face and flexible pipe tube wall is α, and the angular range of angle α is 40 ~ 45 degree.
Further, the head of this draw point is detachably provided with protective cap.
Further, the top of this protective cap is also connected with tailfiber.
Further, the afterbody integral type of this flexible pipe is connected with casing seat, and the lower end of casing seat is removably connected with protective sleeve, the sidewall of casing seat is provided with the extension tube with its intracavity inter-connection; Be provided with sealing-plug in casing seat, the afterbody of draw point 4 is fixedly mounted on through sealing-plug and is positioned on the fixture of protective sleeve.
Further; the tube wall of this casing seat bottom has " F " shape groove along its length; " F " shape groove comprises horizontal fixed part and vertical sliding part; the leading section of protective sleeve is provided with head end; head end is provided with the projection matched with " F " shape groove; the length of " F " shape groove meets the following conditions: by the position of adjustment projection different horizontal fixed part on " F " shape groove, draw point can be driven to move up and down, and then make the head of draw point be stretched out by gap or retract.
Further, this fixture is fixedly mounted in protective sleeve.
Further, this fixture is removably set in described protective sleeve, described fixture is fixedly connected with the handle wing, and described protective sleeve offers gathering sill along its length, and the described handle wing is positioned at gathering sill and moves up and down along its trend; The length of described protective sleeve, gathering sill meets the following conditions: when the described handle wing moves down in gathering sill, can drive in the head indentation protective sleeve of draw point.
This utility model one-way valve formula tool of needles staying on vein has the following advantages: 1. the end of flexible pipe is sealed by diaphragm seal, and offer a gap, during transfusion, under the pressure of liquid, gap is opened, and after transfusion terminates, gap is closed, avoid backflow of blood and enter flexible pipe, avoid the generation of remaining needle plugging, phlebitis, thrombosis etc.2. the diaphragm seal volume thickness wall of both sides, gap is thinner, when infusing, under the effect of ambient pressure, being easy to gap and opening, should form infusion channel.3. the opening of hose end is obliquely installed, and adds the streamlined of flexible pipe, decreases the resistance of Ink vessel transfusing blood flow and the friction to blood vessel wall.4. the sharp-pointed place cover of the end of draw point has protective cap, prevents draw point when through gap, by the edge torn of valve.5. the top of protective cap is provided with tailfiber, and when protective cap removed by needs, the direct tractive tailfiber of medical personnel, can remove protective cap, avoid pollution.6. improve use value and the patient compliance of remaining needle.7. being provided with protective sleeve, when extracting draw point, making, in draw point indentation protective sleeve, to avoid stabbing medical personnel.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model one-way valve formula remaining needle;
Fig. 2 is the schematic diagram of this utility model one-way valve formula remaining needle draw point through gap;
Fig. 3 is the side view of this utility model one-way valve formula retaining needle flexible tube;
Fig. 4 is the structural representation of flexible pipe and protective sleeve in this utility model;
Wherein: 1. flexible pipe; 2. diaphragm seal; 3. protective cap; 4. draw point; 5. tailfiber; 6. extension tube; 7. protective sleeve; 8. the handle wing; 9. casing seat; 10. sealing-plug; 11 head ends; 12. " F " shape groove; 13. projections; 14. fixtures; 15. gathering sills.
Detailed description of the invention
As depicted in figs. 1 and 2, this utility model one-way valve formula remaining needle, comprise flexible pipe 1 and draw point 4, draw point 4 is coaxially arranged in flexible pipe 1, the opening of flexible pipe 1 end is obliquely installed, to form an oval end face, on oval end face, sealing is provided with diaphragm seal 2, the centre position of diaphragm seal 2 offers a gap 2-1 along its long axis direction, the setting of gap 2-1 meets: when there being the liquid of certain pressure in flexible pipe 1, gap 2-1 opens, and liquid flows into Ink vessel transfusing by gap 2-1, when in flexible pipe 1 during distress resolves, gap 2-1 closes.The opening of flexible pipe 1 end is obliquely installed, and ensure that the length of gap 2-1, flows into blood vessel swimmingly to enable liquid.As shown in Figure 3, the angle of oval end face and flexible pipe 1 tube wall is α, and the angular range of angle α is 40 ~ 45 degree.The thickness that diaphragm seal 2 is positioned at other parts of Thickness Ratio of the part of 2-1 both sides, gap is thin.The head of draw point 4 is provided with protective cap 3, when the head of draw point 4 is passed by gap 2-1, and the diaphragm seal 2 of protective cap 3 for preventing the head of draw point 4 from scratching 2-1 both sides, gap.
This utility model one-way valve formula remaining needle, diaphragm seal 2 is connected with flexible pipe 1 one, and diaphragm seal 2 smoothly transits with the junction of flexible pipe 1.When inserting human vas, avoid hurting blood vessel, the top of protective cap 3 is also provided with tailfiber 5, and tailfiber 5 passes gap 2-1, in order to medical personnel's tractive to remove protective cap 3.Staff need not direct contact protection cap 3, avoids pollution.
As shown in Figure 4, this utility model one-way valve formula remaining needle, the afterbody integral type of flexible pipe 1 is connected with casing seat 9, and the lower end of casing seat 9 is removably connected with protective sleeve 7, the sidewall of casing seat 9 is provided with the extension tube 6 with its intracavity inter-connection; Be provided with sealing-plug 10 in casing seat 9, the afterbody of draw point 4 is fixedly mounted on through sealing-plug 10 and is positioned on the fixture 14 of protective sleeve 7.The tube wall of casing seat 9 bottom has " F " shape groove 12 along its length; " F " shape groove 12 comprises horizontal fixed part and vertical sliding part; the leading section of protective sleeve 7 is provided with head end 11; head end 11 is provided with the projection 13 matched with " F " shape groove 12; the length of " F " shape groove meets the following conditions: by the position of adjustment projection 13 different horizontal fixed part on " F " shape groove 12; draw point 4 can be driven to move up and down, and then make the head of draw point 4 be stretched out by gap 2-1 or retract.Fixture 14 is fixedly mounted in protective sleeve 7.
As shown in Figure 1; for the structural representation of this utility model one-way valve formula remaining needle, during use, rotate protective sleeve 7; make projection 13 with corresponding " F " shape groove 12 is corresponding; to make head end 11 move in casing seat 9, make draw point 4 pass gap 2-1, then remove protective cap 3; puncture to patient; puncture successfully, rotate protective sleeve 7 and take off, draw point 4 is pulled out.Then infuse or injection from flexible pipe 6, under the effect of the pressure, gap 2-1 opens, liquid intravasation, and when external pressure disappears, gap 2-1 closes.Anti-return blood forms thrombosis, avoids patient and occurs phlebitic risk.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, this utility model one-way valve formula remaining needle, fixture 14 is removably set in described protective sleeve 7, described fixture 14 is fixedly connected with the handle wing 8, described protective sleeve 7 offers gathering sill 15 along its length, and the described handle wing 8 is positioned at gathering sill 15 and moves up and down along its trend; The length of described protective sleeve 7, gathering sill 15 meets the following conditions: when the described handle wing 8 moves down in gathering sill 15, can drive in the head indentation protective sleeve 7 of draw point 4.Draw point 4 can not stab medical personnel.
The above-mentioned using method of one-way valve formula remaining needle and the difference of embodiment 1 are: before taking off protective sleeve 7, slide backward fixture 14 to make in draw point 4 indentation protective sleeve 7.
Claims (9)
1. one-way valve formula remaining needle, it is characterized in that, comprise flexible pipe (1) and draw point (4), described draw point (4) is coaxially arranged in flexible pipe (1), the opening of described flexible pipe (1) end is obliquely installed, to form an oval end face, on described oval end face, sealing is provided with diaphragm seal (2);
The centre position of described diaphragm seal (2) offers a gap (2-1) along its long axis direction, the setting in described gap (2-1) meets: when there being the liquid of certain pressure in described flexible pipe (1), (2-1) opens in described gap, liquid flows into Ink vessel transfusing by described gap (2-1), when in described flexible pipe (1) during distress resolves, described gap (2-1) closes.
2. one-way valve formula remaining needle according to claim 1, is characterized in that, the thickness that described diaphragm seal (2) is positioned at other parts of Thickness Ratio of the part of gap (2-1) both sides is thin.
3. one-way valve formula remaining needle according to claim 1 and 2, is characterized in that, the angle of described oval end face and flexible pipe (1) tube wall is α, and the angular range of described angle α is 40 ~ 45 degree.
4. one-way valve formula remaining needle according to claim 1 and 2, is characterized in that, the head of described draw point (4) is detachably provided with protective cap (3).
5. one-way valve formula remaining needle according to claim 4, is characterized in that, the top of described protective cap (3) is also connected with tailfiber (5).
6. the one-way valve formula remaining needle according to claim 1,2 or 5, it is characterized in that, the afterbody integral type of described flexible pipe (1) is connected with casing seat (9), the lower end of described casing seat (9) is removably connected with protective sleeve (7), the sidewall of described casing seat (9) is provided with and the extension tube of its intracavity inter-connection (6); Be provided with sealing-plug (10) in described casing seat (9), the afterbody of described draw point (4) be fixedly mounted on through sealing-plug (10) be positioned at described protective sleeve (7) fixture (14) on.
7. one-way valve formula remaining needle according to claim 6, it is characterized in that, the tube wall of described casing seat (9) bottom has " F " shape groove (12) along its length, described " F " shape groove (12) comprise horizontal fixed part and vertical sliding part, the leading section of described protective sleeve (7) is provided with head end (11), described head end (11) is provided with the projection (13) matched with " F " shape groove (12), the length of described " F " shape groove meets the following conditions: by the position of adjustment projection (13) at the upper different horizontal fixed part of " F " shape groove (12), described draw point (4) can be driven to move up and down, and then make the head of draw point (4) be stretched out by gap (2-1) or be retracted.
8. one-way valve formula remaining needle according to claim 6, is characterized in that, described fixture (14) is fixedly mounted in protective sleeve (7).
9. one-way valve formula remaining needle according to claim 6, it is characterized in that, described fixture (14) is removably set in described protective sleeve (7), described fixture (14) is fixedly connected with the handle wing (8), described protective sleeve (7) offers along its length gathering sill (15), the described handle wing (8) is positioned at gathering sill (15) and moves up and down along its trend; The length of described protective sleeve (7), gathering sill (15) meets the following conditions: when the described handle wing (8) moves down in gathering sill (15), can drive in the head indentation protective sleeve (7) of draw point (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561285.6U CN204890813U (en) | 2015-07-30 | 2015-07-30 | Needle is kept somewhere to one -way valve formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561285.6U CN204890813U (en) | 2015-07-30 | 2015-07-30 | Needle is kept somewhere to one -way valve formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204890813U true CN204890813U (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520561285.6U Expired - Fee Related CN204890813U (en) | 2015-07-30 | 2015-07-30 | Needle is kept somewhere to one -way valve formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204890813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-07-30 CN CN201520561285.6U patent/CN204890813U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20180730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |