CN101648049A - Medical forward flow connection device - Google Patents
Medical forward flow connection device Download PDFInfo
- Publication number
- CN101648049A CN101648049A CN200910306823A CN200910306823A CN101648049A CN 101648049 A CN101648049 A CN 101648049A CN 200910306823 A CN200910306823 A CN 200910306823A CN 200910306823 A CN200910306823 A CN 200910306823A CN 101648049 A CN101648049 A CN 101648049A
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- China
- Prior art keywords
- upper shell
- valve core
- elastic valve
- chamber
- upstream
- 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.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000001802 infusion Methods 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 238000012856 packing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 12
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000023555 blood coagulation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Abstract
The invention relates to a medical forward flow connection device which comprises an upper shell, a lower shell and an elastic valve core, wherein the upper shell is provided with an upper end and a lower end with openings, and the middle of the upper shell is provided with a cavity; one end of the lower shell is fixedly sealed with the upper shell, and the other end of the lower shell is providedwith a spiral joint; the elastic valve core is arranged in the cavity of the upper shell and the opening of the upper end and sealed with the upper end of the upper shell in a controllable way, the elastic valve core is used for controlling the flow of liquid flowing through the cavity through the change of volume, the connection base of the lower shell is provided with a through hole, the upperend of the through hole is communicated with the inner cavity of a corrugated pipe, and the lower end of the through hole is communicated with the spiral connection cavity of the spiral joint. The invention has reasonable structure, skillful design and convenient use, and can be connected with a plurality of infusion apparatus, such as syringes, detained needles, and the like for treating patients. The connection device does not need of needle, protects medical care personnel from accident infection caused by damage in the process of transfusion. The invention ensures that liquid flowing through the connection device flows towards the front direction of medical apparatus in the lower end.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically a kind of medical forward flow connection device.When it is connected between a medical apparatus and instruments and another medical apparatus and instruments, be convenient to liquid and circulate betwixt, and when disconnecting the upstream medical apparatus and instruments, guarantee that liquid passes through the forward flow of this adapter generation to outlet and downstream medical apparatus and instruments direction.
Background technology
We know, when carrying out some liquid drug treatments in hospital, will use adapter or valve usually, are used for controlling liquid by flowing between a medical apparatus and instruments (as transfusion device) and another medical apparatus and instruments (as remaining needle).By the adapter or the valve of such setting, make that fluid source or other pipelines are coupled, be convenient to liquid and circulate betwixt, be used for control and import medicinal liquid to the patient from fluid source.When taking fluid source away, close adapter or valve, seal up the liquid flow of the pipeline that leads to human body.A closed system is disclosed as Chinese patent 97181779.0, no needle point, the valve gear of forward flow comprises a main body that defines an inner chamber.The near-end of main body is an opening, and this opening is enough big to accept the modular connection of an armarium.Valve comprises plastics, the sealing device that elastic silica gel is made, and the sealing device is filled top inner chamber and opening with an oval seal cap that has a slit.The opening presses oval seal cap makes slit keep closing under decompression state.When the head of armarium was pressed into inner chamber with sealing, sealing cap left opening.Overcoat also comprises a liquid chambers, so that liquid flows between armarium and catheter head.When armarium inserts intracavity, liquid chambers in the valve automatically and reversibly increases, and when extracting armarium out, reduce, so when extracting armarium out, realized by the forward flow of valve, thereby prevented that blood is by patient's inflow catheter when on by valve, removing armarium towards catheter head.Chinese patent 998075159 optionally carries out fluidic flowing between first and second armarium.Valve has a valve body, limits a passage from first port to second port.When two armarium all are communicated with valve, valve limits a first flow, and when one of them equipment disconnects, limits second a less flow, thereby when first armarium disconnects, produce forward flow from valve to second armarium.Above-mentioned prior art has been eliminated liquid return effectively, has avoided blood at conduit internal congestion or blood clotting, but its complex structure, and the manufacturing cost height requires high to processing technique.The applicant's Chinese patent 200820027194 discloses a kind of connecting device for medical purposes, it 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 upstream extremity of opening is connected with the upstream medical apparatus and instruments, the downstream of lower house one end and upper shell is sealedly connected and fixed, the other end is a screwed union, be used for being connected with the downstream medical apparatus and instruments, described Elastic valve core is arranged in described upper shell chamber and upstream-end opening, and the one end is fixedlyed connected with lower house, and the other end controllably seals with the upper shell upstream-end opening, by the variation of own vol, be used for controlling flowing by described chamber liquid.Elastic valve core upper cylinder part is consistent with upper shell upstream-end opening cavity volume shape, and is provided with a ring packing projection on circumference, and the bottom is elastic corrugated tube portion.Be provided with the passage that communicates with the elastic corrugated tube portion cavity in bottom in the middle of the Elastic valve core barrel portion, vent openings is positioned at described ring packing projection top.When the Elastic valve core own vol of this spline structure changes, gas can not be arranged fully outside device, be caused entrained gas in the chamber.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of rational in infrastructure, deft design, easy to use, can connect the medical forward flow connection device that multiple infusion sets such as syringe, transfusion device, remaining needle, body inner catheter are treated the patient.Be used to guarantee that liquid passes through this connecting device and produces the forward flow of medical apparatus and instruments direction downstream.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of medical forward flow connection device, it is by upper shell, lower house, Elastic valve core is formed, described upper shell has the upstream extremity and the downstream of opening, the centre is a chamber, the upstream extremity of opening is connected with the upstream medical apparatus and instruments, the downstream of described lower house one end and described upper shell is sealedly connected and fixed, the other end is a screwed union, be used for being connected with the downstream medical apparatus and instruments, described lower house intermediate radial is provided with a transfusion through hole that is communicated with the screwed union centre bore, the transfusion through hole also communicates with the upper shell chamber, described Elastic valve core is arranged in upper shell chamber and upstream-end opening, its upper cylinder part is consistent with upper shell upstream-end opening cavity volume shape, and on circumference, be provided with a ring packing projection, controllably seal with the upper shell upstream-end opening, the bottom is an elastic bellows, fixedly connected with lower house in the Elastic valve core bottom, Elastic valve core is by the variation of own vol, be used for controlling flowing by described chamber liquid, it is characterized in that: described lower house is provided with passage with the Connection Block that the Elastic valve core bottom is connected, the passage upper end is communicated with the corrugated tube inner chamber, and the lower end is communicated with the chamber that is threaded of screwed union.
The said lower house Connection Block of the present invention is provided with annular groove, and the Elastic valve core bottom is installed in this annular groove.
Plane, Elastic valve core of the present invention top is provided with a groove infusion channel.So that the entering of liquid when inserting upstream such as syringe medical apparatus and instruments.
Upper shell chamber inner wall of the present invention is axially arranged with some grooves, communicates with the vertical groove infusion channel of Elastic valve core during transfusion.
Elastic valve core of the present invention is under the naturalness that is not subjected to external force, and Elastic valve core relies on the elasticity of itself, and is integral-filled in upper shell chamber and upstream-end opening, closely cooperates with the upper shell upstream-end opening and keeps sealing state.And when medical apparatus and instruments such as upper shell upstream-end opening access transfusion device, Elastic valve core is in pressured state, sealing is removed, liquid can be in described chamber and downstream medical apparatus and instruments proper flow, the gas of Elastic valve core corrugated tube inner chamber is discharged from the passage on the lower house Connection Block.After having infused, when extracting armarium out, Elastic valve core recovers to be filled in upper shell chamber and the upstream-end opening by the strain of its underpart corrugated tube self, reseals with the upper shell upstream-end opening.In this course, Elastic valve core has realized that liquid is by the forward flow of chamber towards the human body direction because the variation of own vol forces the liquid in the chamber to produce a positive pressure in chamber and downstream armarium.
But the present invention is because the Elastic valve core that the volume elastic expansion of packing in upper shell chamber and upstream-end opening changes, and is used for controlling by the flowing of described chamber liquid, and lower house is provided with and corrugated tube inner chamber and the extraneous passage that is connected.Against existing technologies, when the present invention was pressed into chamber when the head of upstream armarium such as syringe with Elastic valve core, sealing was removed, and Elastic valve core is compressed, and its effective volume reduces, and enters the liquid proper flow in the chamber; And pipette moment from the upstream extremity of described upper shell when syringe or other armarium, when promptly extracting armarium out, Elastic valve core flicks by the elastic expansion of himself, its upper cylinder part at first is sealed and matched with the upper shell upstream-end opening, the Elastic valve core effective volume increases, so in extracting process for medical apparatus out, because the variation of Elastic valve core volume, force the liquid in the chamber in chamber and downstream armarium, to produce a positive pressure, realized liquid by the forward flow of chamber, prevented the generation of blood backflow situation towards the human body direction.When the Elastic valve core own vol changed, the gas of elastic corrugated tube cavity was discharged from the passage on the lower house Connection Block, had overcome and gas can not have been arranged fully in the prior art outside device, caused the deficiency of entrained gas in the chamber.Simple in structure, the deft design of the present invention can connect multiple infusion sets such as syringe, transfusion device, remaining needle, body inner catheter, and the patient is treated.Operation is very easy for it, eliminated liquid return effectively, avoided blood at conduit internal congestion or blood clotting.Connecting device need not to use any syringe needle, avoids medical personnel to come to harm in the transfusion operation process and causes inadvertent contamination.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is the schematic cross-section of sealing state of the present invention.
Fig. 3 is the schematic cross-section of pressured state behind Fig. 2 half-twist.
Fig. 4 is the structural representation of a kind of Elastic valve core of the present invention.
Fig. 5 is the schematic cross-section of lower house of the present invention.
Fig. 6 is the schematic cross-section of Fig. 5 half-twist.
Fig. 7 is the vertical view of Fig. 6.
Among the figure: 1. upper shell, 11. chambers, 12. upstream-end opening, 13. groove, 2. Elastic valve core, 21. barrel portions, 22. the ring packing projection, 23. inner chambers, 24. corrugated tubes, 26. the groove infusion channel, 3. lower house, 31. screwed unions, 32. Connection Block, 33. centre bores, 34. mounting grooves, 35. the transfusion through hole, 36. annular grooves, 37. passages.
The specific embodiment
By Fig. 1, Fig. 2 and Fig. 3 as can be seen, a kind of medical forward flow connection device of the present invention, it is made up of upper shell 1, Elastic valve core 2,3 three parts of lower house.Described upper shell 1 has the upstream extremity and the downstream of opening, and upper shell 1 endoporus is a 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 3 and the downstream of described upper shell 1 are sealedly connected and fixed, and the downstream of upper shell 1 is installed in the mounting groove 34 of lower house 3, and upper shell 1, lower house 3 are formed a complete connector shell.Lower house 3 other ends are screwed unions 31, are used for being connected with the downstream medical apparatus and instruments.Described lower house 3 intermediate radial are provided with a transfusion through hole 35 that is communicated with screwed union centre bore 33, and transfusion through hole 35 also communicates with upper shell chamber 11.Upper shell 1, lower house 3 material therefors are medical grade plastic materials.Described Elastic valve core 2 is arranged in the chamber 11 and the upstream-end opening 12 of described upper shell 1, Elastic valve core 2 one ends are fixedlyed connected with lower house 3, the other end controllably seals with upper shell 1 upstream-end opening 12, Elastic valve core 2 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.
As shown in Figure 4, Elastic valve core 2 of the present invention 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 2 includes solid barrel portion 21 with hollow elastic bellows 24 and be connected the bottom.Its upper cylinder part 21 is consistent with upper shell 1 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 2 bottoms are elastic bellows 24, are inner chamber 23 in the middle of it, and appearance is a corrugated tube shape; Said Elastic valve core elastic bellows 24 external diameters are suitable with upper shell chamber 11 internal diameters.Transverse plane also is provided with a groove infusion channel 26 on the Elastic valve core 2 of the present invention, so that the entering of liquid when inserting upstream such as syringe medical apparatus and instruments.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 3 in Elastic valve core 2 bottoms, and keeps sealing between the two, stops air admission downstream medical apparatus and instruments and human body.During assembling, at first Elastic valve core 2 bottoms are fixed on the Connection Block 32 of lower house 3 inboards, then, the two is linked and packed with upper shell 1 together.
By among Fig. 5, Fig. 6 and Fig. 7 as can be seen, lower house 3 of the present invention is provided with passage 37 with the Connection Block 32 that Elastic valve core 2 bottoms are connected, passage 37 upper ends are communicated with corrugated tube inner chamber 23, the lower end is communicated with the chamber that is threaded of screwed union 31.When screwed union 31 was connected with the downstream medical apparatus and instruments, this chamber that is threaded communicated with ambient atmosphere, and therefore, corrugated tube inner chamber 23 communicates with ambient atmosphere by the passage on the Connection Block 32 37.During pressurized, be convenient to the discharge of air in the inner chamber 23 of elastic bellows 24, and then guarantee that Elastic valve core brings into play its elastic reaction.When the Elastic valve core own vol changed, the gas of elastic corrugated tube cavity was discharged from the passage on the lower house Connection Block, had overcome and gas can not have been arranged fully in the prior art outside device, caused the deficiency of entrained gas in the chamber.
The Connection Block 32 of the said lower house 3 of the present invention is provided with annular groove 36, and Elastic valve core 2 bottoms are installed in this annular groove 36.Passage 37 on the Connection Block 32 is vertical with transfusion through hole 35 antarafacials, and passage 37 is the groove shape on the outer wall of the central boss of Connection Block 32, and after Elastic valve core 2 bottoms were installed on annular groove 36, this passage 37 was unimpeded.Lower house 3 and Elastic valve core 2 are connected and fixed reliably, and the independence that does not influence gas, fluid passage simultaneously is unimpeded.
The present invention is under the naturalness that is not subjected to external force, and 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 2.When Elastic valve core was in sealing state, liquid did not flow.And when medical apparatus and instruments such as upper shell upstream-end opening access syringes, Elastic valve core is extruded, depressurization, and simultaneously, the gas of Elastic valve core corrugated tube inner chamber 23 is discharged from the passage 37 on the lower house Connection Block.Liquid can be in described chamber and downstream medical apparatus and instruments proper flow.As shown in Figure 3.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 bellows 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 armarium, has realized that liquid is by the forward flow of chamber towards the human body direction.
Connecting device of the present invention need not to use any syringe needle, avoids medical personnel to come to harm in the transfusion operation process and causes inadvertent contamination.
Claims (5)
1. medical forward flow connection device, it is by upper shell, lower house, Elastic valve core is formed, described upper shell has the upstream extremity and the downstream of opening, the centre is a chamber, the upstream extremity of opening is connected with the upstream medical apparatus and instruments, the downstream of described lower house one end and described upper shell is sealedly connected and fixed, the other end is a screwed union, be used for being connected with the downstream medical apparatus and instruments, described lower house intermediate radial is provided with a transfusion through hole that is communicated with the screwed union centre bore, the transfusion through hole also communicates with the upper shell chamber, described Elastic valve core is arranged in upper shell chamber and upstream-end opening, its upper cylinder part is consistent with upper shell upstream-end opening cavity volume shape, and on circumference, be provided with a ring packing projection, controllably seal with the upper shell upstream-end opening, the bottom is an elastic bellows, fixedly connected with lower house in the Elastic valve core bottom, Elastic valve core is by the variation of own vol, be used for controlling flowing by described chamber liquid, it is characterized in that: described lower house is provided with passage with the Connection Block that the Elastic valve core bottom is connected, the passage upper end is communicated with the corrugated tube inner chamber, and the lower end is communicated with the chamber that is threaded of screwed union.
2. medical forward flow connection device according to claim 1 is characterized in that: said lower house Connection Block is provided with annular groove, and the Elastic valve core bottom is installed in this annular groove.
3. medical forward flow connection device according to claim 1 is characterized in that: the passage on the said lower house Connection Block is vertical with transfusion through hole antarafacial, and passage is the groove shape on the outer wall of the central boss of Connection Block
4. medical forward flow connection device according to claim 1 is characterized in that: plane, said Elastic valve core top is provided with a groove infusion channel.
5. medical forward flow connection device according to claim 1 is characterized in that: said upper shell chamber inner wall is axially arranged with some grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068236A CN101648049B (en) | 2009-09-10 | 2009-09-10 | Medical forward flow connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068236A CN101648049B (en) | 2009-09-10 | 2009-09-10 | Medical forward flow connection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101648049A true CN101648049A (en) | 2010-02-17 |
| CN101648049B CN101648049B (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103068236A Active CN101648049B (en) | 2009-09-10 | 2009-09-10 | Medical forward flow connection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101648049B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935256A (en) * | 2012-12-05 | 2013-02-20 | 山东威高集团医用高分子制品股份有限公司 | One-way valve for infusion |
| CN104321094A (en) * | 2012-04-20 | 2015-01-28 | 拜耳医疗保健公司 | Bellows syringe fluid delivery system |
| WO2015154303A1 (en) * | 2014-04-11 | 2015-10-15 | 福建省百仕韦医用高分子股份有限公司 | Medical positive-pressure switch connector |
| JPWO2016152016A1 (en) * | 2015-03-26 | 2018-01-18 | テルモ株式会社 | Male connector and infusion set |
| CN108815627A (en) * | 2018-08-10 | 2018-11-16 | 杭州光启医疗科技发展有限公司 | The infusion apparatus of anti-return blood |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN111097085A (en) * | 2018-10-25 | 2020-05-05 | 陈戴毅 | Needle-free connector |
| CN111569183A (en) * | 2020-05-14 | 2020-08-25 | 郑孝祥 | Infusion apparatus with air-flow-preventing and blood-return functions for department of pediatrics |
-
2009
- 2009-09-10 CN CN2009103068236A patent/CN101648049B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321094A (en) * | 2012-04-20 | 2015-01-28 | 拜耳医疗保健公司 | Bellows syringe fluid delivery system |
| CN102935256A (en) * | 2012-12-05 | 2013-02-20 | 山东威高集团医用高分子制品股份有限公司 | One-way valve for infusion |
| WO2015154303A1 (en) * | 2014-04-11 | 2015-10-15 | 福建省百仕韦医用高分子股份有限公司 | Medical positive-pressure switch connector |
| JPWO2016152016A1 (en) * | 2015-03-26 | 2018-01-18 | テルモ株式会社 | Male connector and infusion set |
| CN108815627A (en) * | 2018-08-10 | 2018-11-16 | 杭州光启医疗科技发展有限公司 | The infusion apparatus of anti-return blood |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN111097085A (en) * | 2018-10-25 | 2020-05-05 | 陈戴毅 | Needle-free connector |
| US11123534B2 (en) | 2018-10-25 | 2021-09-21 | Tai-Yi CHEN | Needle-free connector |
| CN111097085B (en) * | 2018-10-25 | 2022-08-12 | 陈戴毅 | Needle-free connector |
| CN111569183A (en) * | 2020-05-14 | 2020-08-25 | 郑孝祥 | Infusion apparatus with air-flow-preventing and blood-return functions for department of pediatrics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101648049B (en) | 2011-02-02 |
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