CN103126688A - Anti-reflux structure of blood taking needle - Google Patents
Anti-reflux structure of blood taking needle Download PDFInfo
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- CN103126688A CN103126688A CN2013100952984A CN201310095298A CN103126688A CN 103126688 A CN103126688 A CN 103126688A CN 2013100952984 A CN2013100952984 A CN 2013100952984A CN 201310095298 A CN201310095298 A CN 201310095298A CN 103126688 A CN103126688 A CN 103126688A
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- feed liquor
- seat
- liquid inlet
- reflux
- ring jacket
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Abstract
The invention discloses an anti-reflux structure of a blood taking needle. The anti-reflux structure is characterized by comprising a liquid inlet seat, an anti-reflux piece and a liquid outlet seat. The anti-reflux piece is located between the liquid inlet seat and the liquid outlet seat. The liquid inlet seat and the liquid outlet seat are combined together in a bonding or ultrasonic welding mode. The anti-reflux piece is an elastic sheet. An airtight inner cavity is arranged between the liquid inlet seat and the liquid outlet seat and used for circulation of blood. A cone-shaped protruding piece is fixed at the right end of a liquid outlet annular sheath and enables the anti-reflux piece to abut against and be attached into the liquid inlet inner cavity so as to enable a channel of the liquid inlet seat to maintain a closed state. When the anti-reflux piece is bent under the negative pressure action of a blood collection pipe and the channel of the liquid inlet seat is opened, the blood can pass through and enter a test tube of the blood collection pipe. When the negative pressure of the blood collection pipe is completely released, the anti-reflux piece gets back into shape, the channel of the liquid inlet seat is closed, and the blood can not flow back. Consequently, the anti-reflux structure achieves the anti-reflux function and prevents a patient from being infected with bacteria or virus. The anti-reflux structure of the blood taking needle further has the advantages of being safe and reliable in use, and simple and convenient to operate, enabling an operator to have no need of changing operation habits, and the like.
Description
Technical field
The present invention relates to the aseptic medical equipment for clinical collection blood purposes, especially relate to a kind of blood taking needle that prevents blood back flow when the puncture vein blood vessel.
Background technology
Blood taking needle had just been invented for many years, and was simple to operate, easy-to-use with it, seal free of contamination characteristic, obtained at home or in the world using widely, and the consumption of annual whole world blood taking needle can reach tens.
At present, the traditional blood taking needle of domestic medical field is comprised of intravenous needle, flexible pipe, soft seat, bottle stopper puncture needle stand, bottle stopper puncture needle tubing, hemostasis gum cover, is referred to as " hose type " blood taking needle; The integral type needle tubing that the external normally used blood taking needle of medical field is put the first edge on a knife or a pair of scissors by needle stand, two ends, hemostasis gum cover, long sheath and short sheath form, and are referred to as " pen type " blood taking needle.When the clinical vein sample of blood, drawn, blood taking needle will support the use with vacuum test tube, medical personnel's vein blood vessel that at first intravenous needle of blood taking needle punctured in the usual way is after seeing blood back, after inserting bottle cork needle in the vacuum test tube plug, utilize the negative pressure of vacuum principle of blood taking tube, blood is incorporated into blood taking tube in vitro, can carries out the detection of blood preparation, after blood stops flowing automatically, again intravenous needle is extracted from vein, at last bottle cork needle is extracted in plug.
But according to existing production technology and technological level, the vacuum test tube of selling on market is all not through what sterilize basically, also just says that the blood taking tube product is not to provide with aseptic form.According to domestic or international data or bibliographical information, in the clinical blood gatherer process, particularly " pen type is " in the process of blood taking needle in use, the invisible spectro backflow of blood of blood taking tube often occurs to the phenomenon of Venous system, because blood taking tube in vitro has a bacterium, thereby cause patient infection pathogenic bacteria or disease, cause serious injury.
Summary of the invention
The object of the present invention is to provide a kind of blood back flow, easy and simple to handle, simple in structure, safe and reliable, backflow preventing structure of not changing operating habit of preventing in blood taking needle.
The object of the present invention is achieved like this:
a kind of backflow preventing structure of blood taking needle, feature is: be comprised of feed liquor seat, anti-reverse flow and tapping seat, the feed liquor seat is by integrated composition of liquid inlet joint of feed liquor ring jacket and the right-hand member of left end, be provided with the feed liquor through hole in the centre of liquid inlet joint, be provided with the feed liquor inner chamber of opening left in the feed liquor ring jacket, be provided with feed liquor seat passage in the junction of feed liquor ring jacket and liquid inlet joint, feed liquor seat passage feed liquor through hole and feed liquor inner chamber are communicated with and the diameter of feed liquor seat passage between the diameter of the diameter of feed liquor through hole and feed liquor inner chamber, tapping seat is by the fluid joint of left end, middle base plate and the integrated composition of fluid ring jacket of right-hand member, centre at base plate and the fluid joint that is connected with the bottle stopper puncture needle tubing is provided with out fluid through-hole, the internal diameter of the external diameter of fluid ring jacket and feed liquor ring jacket matches, the fluid ring jacket of opening inserts in the feed liquor ring jacket of opening left to the right and closely is nested together to the right, make feed liquor seat and tapping seat combine an integral body by bonding or ultrasonic bonding, the airtight inner chamber of the common formation of fluid inner chamber in the fluid ring jacket and the feed liquor inner chamber in the feed liquor ring jacket, right-hand member at the fluid ring jacket is fixed with a flat-shaped tapered protrusion sheet, anti-reverse flow is placed in airtight inner chamber in the middle of feed liquor seat and tapping seat, and the top of tapered protrusion sheet props up anti-reverse flow makes anti-reverse flow fit tightly right-hand member at the feed liquor inner chamber, sealing feed liquor seat passage.
Anti-reverse flow is one roundly to have an elastic thin slice.
Feed liquor seat and tapping seat are made by transparent ABS, PC or PVC material, and anti-reverse flow is made by gum elastic or silica gel material.
The liquid inlet joint of the feed liquor seat of hose type is standard outer cone joint or outer cone locked joints, is connected with flexible pipe or standard outer cone joint; In the feed liquor through hole of the feed liquor seat of pen type, the vein needle tubing is installed.
Be processed with the standard thread that is connected for needle holder on the outer wall of the tapping seat of pen type.
The present invention is comprised of feed liquor seat, anti-reverse flow and tapping seat.During use, the nurse inserts the vein needle tubing in patient's vein, and blood enters in feed liquor seat passage, insert the plug of blood taking tube at bottle cork needle after, anti-reverse flow bending because of the suction function power of blood taking tube, open the feed liquor seat passage that is sealed by anti-reverse flow, blood through airtight inner chamber, go out that fluid through-hole is laggard enters blood taking tube in vitro, after the negative pressure of blood taking tube discharges fully, anti-reverse flow restores to the original state, sealing feed liquor seat passage, blood can not reflux again, thereby reaches the counterflow-preventing function.
The present invention has increased counterflow-preventing mechanism on the basis of traditional blood taking needle, in case the Hemostatic Oral Liquid adverse current.Therefore, the present invention has following advantage: 1, can prevent blood back flow, stop patient infection antibacterial or virus; 2, safe and reliable, easy and simple to handle, do not change operating habit, can be widely used in clinical; 3, product structure is simple, easily processing.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is decomposing schematic representation of the present invention;
Fig. 3 is the structural representation of embodiment 1;
Fig. 4 is the structural representation of embodiment 2;
Fig. 5 is that the present invention is subjected to suction function power working state schematic representation, and the direction of arrow is flow direction.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
a kind of backflow preventing structure of blood taking needle, by feed liquor seat 1, anti-reverse flow 2 and tapping seat 3 form, feed liquor seat 1 is by integrated composition of liquid inlet joint 11 of feed liquor ring jacket 12 and the right-hand member of left end, be provided with feed liquor through hole 13 in the centre of liquid inlet joint 11, be provided with the feed liquor inner chamber 15 of opening left in feed liquor ring jacket 12, be provided with feed liquor seat passage 14 in the junction of feed liquor ring jacket 12 and liquid inlet joint 11, feed liquor seat passage 14 feed liquor through hole 13 and feed liquor inner chamber 15 is communicated with and the diameter of feed liquor seat passage 14 between the diameter of the diameter of feed liquor through hole 13 and feed liquor inner chamber 15, tapping seat 3 is by the fluid joint 33 of left end, middle base plate 32 and the integrated composition of fluid ring jacket 31 of right-hand member, centre at base plate 32 and the fluid joint 33 that is connected with the bottle stopper puncture needle tubing is provided with out fluid through-hole 35, the internal diameter of the external diameter of fluid ring jacket 31 and feed liquor ring jacket 12 matches, the fluid ring jacket 31 of opening inserts in the feed liquor ring jacket 12 of opening left to the right and closely is nested together to the right, make feed liquor seat 1 and tapping seat 3 combine an integral body by bonding or ultrasonic bonding, 31 fluid inner chamber 36 and the 15 airtight inner chambers 4 of common formation of the feed liquor inner chamber in feed liquor ring jacket 12 in the fluid ring jacket, right-hand member at fluid ring jacket 31 is fixed with a flat-shaped tapered protrusion sheet 34, anti-reverse flow 2 is placed in airtight inner chamber 4 in the middle of feed liquor seat 1 and tapping seat 3, and the top of tapered protrusion sheet 34 props up anti-reverse flow 2 makes anti-reverse flow 2 fit tightly right-hand member at feed liquor inner chamber 15, sealing feed liquor seat passage 14.
Feed liquor seat 1 and tapping seat 2 are made by transparent ABS, PC or PVC material, and anti-reverse flow 2 is made by gum elastic or silica gel material.
Embodiment 1: hose type counterflow-preventing blood taking needle
Hose type counterflow-preventing blood taking needle is comprised of protective sleeve 5, hemostasis gum cover 6, bottle stopper puncture needle tubing 7, counterflow-preventing mechanism 3, flexible pipe 8 and vein needle tubing 9; the liquid inlet joint 11 of feed liquor seat 1 is standard outer cone joint or outer cone locked joints, is connected with flexible pipe 2 or standard outer cone joint.Bottle stopper puncture needle tubing 7 is arranged on the going out in fluid through-hole 35 of fluid joint 33 of tapping seat 3, and hemostasis gum cover 6 is arranged on bottle stopper puncture needle tubing 7 outsides, and protective sleeve 5 is arranged on the outside of fluid joint 33.
Embodiment 2: pen type counterflow-preventing blood taking needle
Pen type counterflow-preventing blood taking needle is comprised of protective sleeve 5, hemostasis gum cover 6, bottle stopper puncture needle tubing 7, counterflow-preventing mechanism 3 and vein needle tubing 10; in the feed liquor through hole 13 of feed liquor seat 1, vein needle tubing 10 is installed; be processed with standard thread 38 on the outer wall of tapping seat 3,, can connect by needle holder.Hemostasis gum cover 6 is arranged on bottle stopper puncture needle tubing 7 outsides, and protective sleeve 5 is arranged on feed liquor seat 1 and tapping seat 3 outsides.
Claims (4)
1. the backflow preventing structure of a blood taking needle, it is characterized in that: formed by feed liquor seat, anti-reverse flow and tapping seat, the feed liquor seat is by integrated composition of liquid inlet joint of feed liquor ring jacket and the right-hand member of left end, be provided with the feed liquor through hole in the centre of liquid inlet joint, be provided with the feed liquor inner chamber of opening left in the feed liquor ring jacket, be provided with feed liquor seat passage in the junction of feed liquor ring jacket and liquid inlet joint, feed liquor seat passage feed liquor through hole and feed liquor inner chamber are communicated with and the diameter of feed liquor seat passage between the diameter of the diameter of feed liquor through hole and feed liquor inner chamber, tapping seat is by the fluid joint of left end, middle base plate and the integrated composition of fluid ring jacket of right-hand member, centre at base plate and the fluid joint that is connected with the bottle stopper puncture needle tubing is provided with out fluid through-hole, the internal diameter of the external diameter of fluid ring jacket and feed liquor ring jacket matches, the fluid ring jacket of opening inserts in the feed liquor ring jacket of opening left to the right and closely is nested together to the right, make feed liquor seat and tapping seat combine an integral body by bonding or ultrasonic bonding, the airtight inner chamber of the common formation of fluid inner chamber in the fluid ring jacket and the feed liquor inner chamber in the feed liquor ring jacket, right-hand member at the fluid ring jacket is fixed with a flat-shaped tapered protrusion sheet, anti-reverse flow is placed in airtight inner chamber in the middle of feed liquor seat and tapping seat, and the top of tapered protrusion sheet props up anti-reverse flow makes anti-reverse flow fit tightly right-hand member at the feed liquor inner chamber, sealing feed liquor seat passage.
2. backflow preventing structure according to claim 1 is characterized in that: the anti-reverse flow of being made by gum elastic or silica gel material is one roundly to have an elastic thin slice.
3. backflow preventing structure according to claim 1 is characterized in that: the liquid inlet joint of the feed liquor seat of being made by transparent material of hose type is standard outer cone joint or outer cone locked joints, is connected with flexible pipe or standard outer cone joint.
4. backflow preventing structure according to claim 1, it is characterized in that: in the feed liquor through hole of the feed liquor seat of being made by transparent material of pen type, the vein needle tubing is installed, is processed with the standard thread that is connected for needle holder on the outer wall of the tapping seat of being made by transparent material of pen type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100952984A CN103126688A (en) | 2013-03-25 | 2013-03-25 | Anti-reflux structure of blood taking needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100952984A CN103126688A (en) | 2013-03-25 | 2013-03-25 | Anti-reflux structure of blood taking needle |
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| CN103126688A true CN103126688A (en) | 2013-06-05 |
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| CN2013100952984A Pending CN103126688A (en) | 2013-03-25 | 2013-03-25 | Anti-reflux structure of blood taking needle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757980A (en) * | 2015-04-22 | 2015-07-08 | 浙江灵洋医疗器械有限公司 | Blood return preventing collection needle |
| CN107049339A (en) * | 2017-03-27 | 2017-08-18 | 防城港市中医医院 | A kind of accurate urine volume counter |
| CN107970501A (en) * | 2016-10-25 | 2018-05-01 | 袁娜 | A kind of blood sampling connector and blood-taking device based on venous detaining needle |
| CN108324291A (en) * | 2018-03-24 | 2018-07-27 | 曹春荣 | Blood specimen collection valve for preventing reverse-flow device and blood taking needle |
| CN108403129A (en) * | 2018-03-24 | 2018-08-17 | 曹春荣 | Venous blood collect needle |
| CN114010905A (en) * | 2021-11-05 | 2022-02-08 | 首都医科大学宣武医院 | Condensed water discharging device of breathing machine |
Citations (5)
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|---|---|---|---|---|
| DE4132480A1 (en) * | 1991-09-30 | 1993-04-08 | Kabe Labortechnik Gmbh | Blood sampling appts. for clinical or pathological use - has cylindrical test tube on which axially directed cone is formed with piston moving in tube provided with check valve contg. elastically deformable membrane |
| US20060009714A1 (en) * | 2004-07-09 | 2006-01-12 | Yoshio Higaki | Blood collection needle |
| JP4464151B2 (en) * | 2004-02-04 | 2010-05-19 | ハナコメディカル株式会社 | Blood collection needle |
| CN102783954A (en) * | 2012-09-04 | 2012-11-21 | 山东新华安得医疗用品有限公司 | Mono-directional inverse-inhibiting safe blood taking needle |
| CN203220372U (en) * | 2013-03-25 | 2013-10-02 | 熊艳芳 | Anti-reflux structure of blood taking needle |
-
2013
- 2013-03-25 CN CN2013100952984A patent/CN103126688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132480A1 (en) * | 1991-09-30 | 1993-04-08 | Kabe Labortechnik Gmbh | Blood sampling appts. for clinical or pathological use - has cylindrical test tube on which axially directed cone is formed with piston moving in tube provided with check valve contg. elastically deformable membrane |
| JP4464151B2 (en) * | 2004-02-04 | 2010-05-19 | ハナコメディカル株式会社 | Blood collection needle |
| US20060009714A1 (en) * | 2004-07-09 | 2006-01-12 | Yoshio Higaki | Blood collection needle |
| CN102783954A (en) * | 2012-09-04 | 2012-11-21 | 山东新华安得医疗用品有限公司 | Mono-directional inverse-inhibiting safe blood taking needle |
| CN203220372U (en) * | 2013-03-25 | 2013-10-02 | 熊艳芳 | Anti-reflux structure of blood taking needle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757980A (en) * | 2015-04-22 | 2015-07-08 | 浙江灵洋医疗器械有限公司 | Blood return preventing collection needle |
| CN107970501A (en) * | 2016-10-25 | 2018-05-01 | 袁娜 | A kind of blood sampling connector and blood-taking device based on venous detaining needle |
| CN107049339A (en) * | 2017-03-27 | 2017-08-18 | 防城港市中医医院 | A kind of accurate urine volume counter |
| CN107049339B (en) * | 2017-03-27 | 2023-05-26 | 防城港市中医医院 | Precise urine volume meter |
| CN108324291A (en) * | 2018-03-24 | 2018-07-27 | 曹春荣 | Blood specimen collection valve for preventing reverse-flow device and blood taking needle |
| CN108403129A (en) * | 2018-03-24 | 2018-08-17 | 曹春荣 | Venous blood collect needle |
| CN108324291B (en) * | 2018-03-24 | 2023-12-22 | 曹春荣 | Blood sample collection anti-backflow valve device and blood taking needle |
| CN114010905A (en) * | 2021-11-05 | 2022-02-08 | 首都医科大学宣武医院 | Condensed water discharging device of breathing machine |
| CN114010905B (en) * | 2021-11-05 | 2024-05-14 | 首都医科大学宣武医院 | Condensed water discharge device of breathing machine |
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Application publication date: 20130605 |