CN201356857Y - Connector pipe type positive pressure vein remaining needle - Google Patents
Connector pipe type positive pressure vein remaining needle Download PDFInfo
- Publication number
- CN201356857Y CN201356857Y CNU2009200185055U CN200920018505U CN201356857Y CN 201356857 Y CN201356857 Y CN 201356857Y CN U2009200185055 U CNU2009200185055 U CN U2009200185055U CN 200920018505 U CN200920018505 U CN 200920018505U CN 201356857 Y CN201356857 Y CN 201356857Y
- Authority
- CN
- China
- Prior art keywords
- positive pressure
- upper shell
- connecting leg
- valve core
- 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 - Lifetime
Links
- 210000003462 vein Anatomy 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000001802 infusion Methods 0.000 claims abstract description 13
- 230000002439 hemostatic effect Effects 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 239000008280 blood Substances 0.000 abstract description 12
- 210000004369 blood Anatomy 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000023555 blood coagulation Effects 0.000 abstract description 5
- 238000010992 reflux Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a connector pipe type positive pressure vein remaining needle, which mainly comprises a remaining needle sleeve, a sleeve seat, a needle tube, a connector pipe and an infusion three-way, wherein the rear end of the sleeve is connected and fixed in the sleeve seat through a sequential needle tube, a hemostatic sealing plug and the sequential needle tube are arranged in the sleeve seat, a puncture needle tube is inserted through the sealing plug in a sealing mode, and penetrates through the inner of the remaining needle sleeve, the lateral direction of the sleeve seat is connected with the infusion three-way through a connector pipe, and a positive pressure joint is connected on a liquid inlet of the infusion three-way of the remaining needle. The remaining needle is characterized in that the positive pressure joint is connected on the liquid inlet of the infusion three-way, when a person pulls out a medical appliance, such as an injector and the like, from the positive pressure joint of the infusion three-way, the positive pressure joint guarantees liquid to flow to the positive direction of the infusion direction, thereby preventing blood from flowing into the sleeve from a patient, effectively eliminating the reflux of the liquid and preventing the blocking or the blood coagulation of the blood in the sleeve. The connector pipe type positive pressure vein remaining needle is ideal.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically a kind of connecting leg formula malleation venous detaining needle.
Background technology
We know, connecting leg formula venous detaining needle is a kind of medical apparatus and instruments that is used for the venous indwelling transfusion, it mainly includes remaining needle sleeve pipe, casing seat, puncture needle tubing, connecting leg, transfusion threeway assembly, the sleeve pipe rear end is by being fastened in the casing seat along needle tubing, hemostatic seal plug also is housed in the casing seat, the puncture needle tubing was inserted sealing-plug hermetically and along needle tubing, was positioned at the remaining needle sleeve pipe, and the casing seat side direction is connected with transfusion three way cock assembly by connecting leg.After medical personnel use venous indwelling at the patient's vein vascular puncture, the needle tubing that will puncture is extracted from casing seat rear end and remaining needle sleeve pipe, comparatively softish sleeve portion is kept somewhere in the patient's vein blood vessel, carried out continuously to the patient or transfusion discontinuously by the remaining needle sleeve pipe.Because existing transfusion three way cock assembly does not have the malleation connecting device, when from armarium such as transfusion three way cock assembly extraction syringes, owing to be subjected to factor affecting such as human blood-pressure, tend to cause the outflow of liquid return and blood of human body, cause blood to flow out by the patient, enter sleeve pipe, cause blood, have a strong impact on the safety of using and infuse of venous detaining needle at sleeve pipe internal congestion or blood clotting.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of rational in infrastructure, easy to use, can stop blood to flow out effectively and enter sleeve pipe by the patient, avoid the connecting leg formula malleation venous detaining needle of blood at sleeve pipe internal congestion or blood clotting.
The technical scheme in the invention for solving the above technical problem is: a kind of connecting leg formula malleation venous detaining needle, mainly include remaining needle sleeve pipe, casing seat, needle tubing, connecting leg, transfusion threeway, the sleeve pipe rear end is by being fastened in the casing seat along needle tubing, hemostatic seal plug is housed in the casing seat, the puncture needle tubing was inserted sealing-plug and suitable needle tubing hermetically, in the remaining needle sleeve pipe, the casing seat side direction is connected with the transfusion threeway by connecting leg, it is characterized in that: connect a positive pressure connector on the inlet of transfusion threeway.
Positive pressure connector described in the utility model is made up of upper shell, lower house, Elastic valve core, upper shell has the upstream extremity and the downstream of opening, the centre is a chamber, the downstream of lower house and upper shell is sealedly connected and fixed, the lower house other end is a screwed union, the three way cock is connected with transfusion, Elastic valve core is arranged in upper shell chamber and upstream-end opening, the one end is fixedlyed connected with lower house, the other end controllably seals with the upper shell upstream-end opening, by the variation of own vol, be used for controlling flowing of chamber liquid.In the use,, force the liquid in the chamber to produce a positive pressure, realized liquid, prevented the generation of blood backflow situation by the forward flow of chamber towards the human body direction to liquid flow direction by the variation of Elastic valve core volume.
This utility model is owing to connect a positive pressure connector on an inlet of transfusion threeway, against existing technologies, medical personnel are from armarium such as positive pressure connector extraction syringes the time, guaranteed by the forward flow of liquid towards the transfusion direction, thereby when having prevented that blood from flowing into sleeve pipe by the patient, eliminated liquid return effectively, avoided blood at sleeve pipe internal congestion or blood clotting.
Description of drawings
Below in conjunction with accompanying drawing this utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of this utility model positive pressure connector.
Fig. 3 is the schematic cross-section of utility model positive pressure connector sealing state.
Fig. 4 is the schematic cross-section of utility model positive pressure connector pressured state.
Fig. 5 is the structural representation of Elastic valve core in this utility model positive pressure connector.
1. positive pressure connectors among the figure, 2. transfusion threeway, 3. connecting leg, 4. needle handle, 5. needle tubing, 6. sealing-plug, 7. casing seat, 8. sleeve pipe, 9. sheath, 10. upper shell, 11. chamber, 12. upstream-end opening, 13. grooves, 20. Elastic valve cores, 21. barrel portion, 22. ring packing projectioies, 23. cavitys, 24. corrugated tube parts, 25. passage, 26. groove infusion channel, 30. lower houses, 31. screwed unions, 32. Connection Block, 33. transfusion through holes, 40. clips, 50. calparine caps.
The specific embodiment
As seen from Figure 1, a kind of connecting leg formula of this utility model malleation venous detaining needle, mainly include remaining needle sleeve pipe 8, casing seat 7, needle tubing 5, connecting leg 3, transfusion threeway 2, sleeve pipe 8 rear ends are by being fastened in the casing seat 7 along needle tubing, outside the sleeve pipe 8 sheath 9 is arranged, needle tubing 5 rear portions are provided with the needle handle 4 and the pin wing.Casing seat 7 back segment inner chambers are equipped with hemostatic seal plug 6 and suitable needle tubing, puncture needle tubing 3 was inserted sealing-plug 6 and suitable needle tubing hermetically, it is in whole remaining needle sleeve pipe 8, casing seat 7 lateral branching pipes are connected with transfusion threeway 2 by connecting leg 3, be that connecting leg 3 one ends are communicated with remaining needle sleeve pipe 8 by casing seat 7, the other end connects transfusion threeway 2.Clip 40 is housed on this utility model connecting leg 3, when the patient suspends transfusion because of needs, as long as clamp connecting leg 3 with clip 40, disconnects the connection between transfusion threeway 2 and the casing seat 7, the order transfusion takes time out to.Unclamp clip 40 when needing to recover transfusion and get final product, the operation simple and convenient.The annexation of above-mentioned composition, structure and each parts belongs to prior art, repeats no more.
By it can also be seen that among Fig. 1, connect a positive pressure connector 1 on the inlet of this utility model transfusion threeway 2, another inlet has nipple and calparine cap 50 to spin.During normal infusion, medicinal liquid can inject positive pressure connector 1 by the upstream medical apparatus and instruments, and then enters transfusion threeway 2, and the connecting leg 3 of flowing through props up through casing seat 7 side direction and mouthful to enter casing seat 7 ante-chambers and flow to sleeve pipe 8, enters vein blood vessel at last.When carrying out two kinds of medicinal liquid transfusions, as long as screw off calparine cap 50, connect other transfusion apparatus, medicinal liquid can enter transfusion threeway 2 by positive pressure connector 1 and another inlet respectively.
By Fig. 2, Fig. 3 and Fig. 4 as can be seen, positive pressure connector 1 its form by upper shell 10, Elastic valve core 20,30 3 parts of lower house.Described upper shell 10 has the upstream extremity and the downstream of opening, and upper shell 10 endoporus are reducing, and top is little upstream-end opening 12, and the bottom is big chamber 11, and the upstream extremity of its opening is used for being connected with the upstream medical apparatus and instruments.One end of described lower house 30 and the downstream of described upper shell 10 are sealedly connected and fixed, and upper shell 10, lower house 30 are formed a complete connector shell.Lower house 30 other ends are screwed unions 31, are used for being connected with downstream transfusion threeway 2.Upper shell 10, lower house 30 material therefors are medical grade plastic materials.Described Elastic valve core 20 is arranged in the chamber 11 and the upstream-end opening 12 of described upper shell 10, Elastic valve core 20 1 ends are fixedlyed connected with lower house 30, the other end controllably seals with upper shell 10 upstream-end opening 12, Elastic valve core 20 controllably is filled in described chamber 11 and the upstream-end opening 12, utilize the elasticity of himself, by the variation of own vol, be used for controlling flowing by described chamber liquid.During assembling, at first Elastic valve core 20 bottoms are fixed on the Connection Block 32 of lower house 30 inboards, then, the two is linked and packed with upper shell 10 together.
As shown in Figure 5, described Elastic valve core 20 is that an elastomeric material constitutes, and can be the medical silica-gel material, requirement can not with medicinal liquid generation chemical reaction.Elastic valve core 20 includes solid barrel portion 21 with hollow elastic corrugated tube portion 24 and be connected the bottom.Its upper cylinder part 21 is consistent with upper shell 10 upstream-end opening 12 cavity volume shapes, and is provided with a ring packing projection 22 on the outer wall circumference, ring packing projection 22 and upstream-end opening 12 fitted seal, and like this, barrel portion 21 plays seal valve; Elastic valve core 20 bottoms are elastic corrugated tube portion 24, are cavitys 23 in the middle of it, and appearance is a corrugated tube shape; Elastic corrugated tube portion 24 external diameters of said Elastic valve core are suitable with upper shell chamber 11 internal diameters.The elastic corrugated tube portion external diameter of pressured state Elastic valve core is consistent with upper shell chamber internal diameter.Fixedlying connected with lower house 30 in Elastic valve core 20 bottoms, and keeps sealing between the two, stops air admission downstream medical apparatus and instruments and human body.
Be provided with the passage 25 that communicates with the elastic corrugated tube portion cavity 23 in bottom in the middle of the described Elastic valve core 20 upper cylinder parts 21, passage 25 openings are positioned at described ring packing projection 22 tops.Be convenient to the turnover of air in the cavity 23 of the elastic corrugated tube portion 24 in bottom, and then guarantee that Elastic valve core brings into play its elastic reaction.
Transverse plane also is provided with a groove infusion channel 26 on the described Elastic valve core 20, so that the entering of liquid when inserting upstream such as syringe medical apparatus and instruments.Chamber 11 inwalls of described upper shell 10 are axially arranged with some grooves 13, communicate with the vertical groove infusion channel 26 of Elastic valve core during transfusion.Also have transfusion through hole 33 in the middle of the described lower house 30, its inner end communicates with groove 13 infusion channel of upper shell 1 inwall, and the outer end communicates with the downstream medical apparatus and instruments that is connected human body.
Under the naturalness that is not subjected to external force, Elastic valve core relies on the elasticity of itself, and is integral-filled in chamber 11 and upstream-end opening 12, closely cooperates with the endoporus of upper shell upstream-end opening and keeps sealing, as shown in Figure 3.When Elastic valve core was in sealing state, liquid did not flow.And insert medical apparatus and instruments such as syringe when the upper shell upstream-end opening, Elastic valve core is extruded, depressurization, liquid can be in described chamber and downstream medical apparatus and instruments proper flow, as shown in Figure 4.When Elastic valve core was in pressured state, because the Elastic valve core outside diameter of bel is suitable with upper shell chamber 11 internal diameters, the upper enclosure inner wall axial notch guaranteed the normal circulation of liquid as infusion channel.After having injected, when extracting armarium out, Elastic valve core recovers to be filled in chamber and the upstream-end opening by the strain of its elastic corrugated tube portion 24 self, reseals with the endoporus of upper shell upstream-end opening, and liquid can't reflux.In this course, Elastic valve core forces the liquid in the chamber to produce a positive pressure in chamber and downstream transfusion threeway, has realized that liquid is by the forward flow of chamber towards the human body direction
This utility model connects a positive pressure connector on an inlet of transfusion threeway, when the positive pressure connector that links to each other from the transfusion threeway is extracted armarium such as syringe out, positive pressure connector has guaranteed by the forward flow of liquid towards the transfusion direction, thereby when having prevented that blood from flowing into sleeve pipe by the patient, eliminated liquid return effectively, avoided blood at sleeve pipe internal congestion or blood clotting.It is a kind of ideal connecting leg formula malleation venous detaining needle.
Claims (6)
1. connecting leg formula malleation venous detaining needle, mainly include remaining needle sleeve pipe, casing seat, needle tubing, connecting leg, transfusion threeway, the sleeve pipe rear end is by being fastened in the casing seat along needle tubing, hemostatic seal plug is housed in the casing seat, the puncture needle tubing was inserted sealing-plug and suitable needle tubing hermetically, in the remaining needle sleeve pipe, the casing seat side direction is connected with the transfusion threeway by connecting leg, it is characterized in that: connect a positive pressure connector on the inlet of transfusion threeway.
2. connecting leg formula malleation venous detaining needle according to claim 1, it is characterized in that: said positive pressure connector is by upper shell, lower house, Elastic valve core is formed, upper shell has the upstream extremity and the downstream of opening, the centre is a chamber, the downstream of lower house and upper shell is sealedly connected and fixed, the lower house other end is a screwed union, the three way cock is connected with transfusion, Elastic valve core is arranged in upper shell chamber and upstream-end opening, the one end is fixedlyed connected with lower house, the other end controllably seals with the upper shell upstream-end opening, and by the variation of own vol, liquid flows in the control chamber.
3. connecting leg formula malleation venous detaining needle according to claim 2, it is characterized in that: said Elastic valve core includes solid barrel portion with hollow elastic corrugated tube portion and be connected the bottom, the upper cylinder part is consistent with upper shell upstream-end opening cavity volume shape, and on circumference, be provided with a ring packing projection, in the middle of the elastic corrugated tube portion of bottom is cavity, fixedlys connected with lower house in the bottom.
4. connecting leg formula malleation venous detaining needle according to claim 2 is characterized in that: be provided with the passage that communicates with the elastic corrugated tube portion cavity in bottom in the middle of the said Elastic valve core barrel portion, vent openings is positioned at described ring packing projection top.
5. connecting leg formula malleation venous detaining needle according to claim 2, it is characterized in that: plane, said Elastic valve core top is provided with a groove infusion channel.
6. connecting leg formula malleation venous detaining needle according to claim 2, it is characterized in that: the elastic corrugated tube portion external diameter of said Elastic valve core is suitable with upper shell chamber internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200185055U CN201356857Y (en) | 2009-01-21 | 2009-01-21 | Connector pipe type positive pressure vein remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200185055U CN201356857Y (en) | 2009-01-21 | 2009-01-21 | Connector pipe type positive pressure vein remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201356857Y true CN201356857Y (en) | 2009-12-09 |
Family
ID=41422612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200185055U Expired - Lifetime CN201356857Y (en) | 2009-01-21 | 2009-01-21 | Connector pipe type positive pressure vein remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201356857Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947337A (en) * | 2010-09-08 | 2011-01-19 | 陈永曦 | Closed type detaining needle catheter assembly |
| WO2014169429A1 (en) * | 2013-04-16 | 2014-10-23 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector for connecting to extracorporeal catheter |
| CN105163773A (en) * | 2013-05-15 | 2015-12-16 | 福建省百仕韦医用高分子股份有限公司 | Pull positive pressure type medical infusion connector connected to extracorporal indwelling catheter |
| CN105709296A (en) * | 2016-04-08 | 2016-06-29 | 广东先来医疗器械有限公司 | Straight-tube anti-thrombus venous indwelling needle |
| CN108030976A (en) * | 2018-01-17 | 2018-05-15 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
| CN112274728A (en) * | 2020-05-21 | 2021-01-29 | 山东朱氏药业集团有限公司 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
| CN114699599A (en) * | 2014-12-01 | 2022-07-05 | 河南曙光健士实业发展有限公司 | Remaining needle with slow-release positive pressure device |
-
2009
- 2009-01-21 CN CNU2009200185055U patent/CN201356857Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947337A (en) * | 2010-09-08 | 2011-01-19 | 陈永曦 | Closed type detaining needle catheter assembly |
| CN101947337B (en) * | 2010-09-08 | 2013-09-18 | 福建省百仕韦医用高分子股份有限公司 | Closed type detaining needle catheter assembly |
| WO2014169429A1 (en) * | 2013-04-16 | 2014-10-23 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector for connecting to extracorporeal catheter |
| CN105163773A (en) * | 2013-05-15 | 2015-12-16 | 福建省百仕韦医用高分子股份有限公司 | Pull positive pressure type medical infusion connector connected to extracorporal indwelling catheter |
| CN105163773B (en) * | 2013-05-15 | 2018-05-04 | 福建省百仕韦医用高分子股份有限公司 | The pull positive-pressure type medical infusion connector plugged into non small cellCatheter |
| CN114699599A (en) * | 2014-12-01 | 2022-07-05 | 河南曙光健士实业发展有限公司 | Remaining needle with slow-release positive pressure device |
| CN114699599B (en) * | 2014-12-01 | 2023-06-27 | 河南曙光健士实业发展有限公司 | Indwelling needle with slow-release positive pressure device |
| CN105709296A (en) * | 2016-04-08 | 2016-06-29 | 广东先来医疗器械有限公司 | Straight-tube anti-thrombus venous indwelling needle |
| CN108030976A (en) * | 2018-01-17 | 2018-05-15 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
| CN112274728A (en) * | 2020-05-21 | 2021-01-29 | 山东朱氏药业集团有限公司 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |
|
| CX01 | Expiry of patent term |