CN101357250B - Connecting device for medical purposes - Google Patents
Connecting device for medical purposes Download PDFInfo
- Publication number
- CN101357250B CN101357250B CN 200810139306 CN200810139306A CN101357250B CN 101357250 B CN101357250 B CN 101357250B CN 200810139306 CN200810139306 CN 200810139306 CN 200810139306 A CN200810139306 A CN 200810139306A CN 101357250 B CN101357250 B CN 101357250B
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- CN
- China
- Prior art keywords
- upper shell
- valve core
- elastic valve
- upstream
- connecting device
- 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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- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 238000001802 infusion Methods 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 9
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000001727 in vivo Methods 0.000 abstract 1
- 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
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000023555 blood coagulation Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 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
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a medical connecting device which consists of an upper shell, a lower shell and an elastic valve core. The upper shell is equipped with an upstream end and a downstream end which have openings; a cavity is positioned between the upstream end and the downstream end. One end of the lower shell is hermetically connected and fixed with the downstream end of the upper shell, and the other end is a spiral joint. The elastic valve core is arranged in the cavity of the upper shell and the opening of the upstream end, one end of the elastic valve core is fixedly connected with the lower shell, and the other end is controllably sealed with the opening of the upstream end of the upper shell. The elastic valve core controls flow of liquid in the cavity by changing self-volume. The connecting device has the advantages of reasonable structure, delicate design and convenient use, and that the device can be connected with a plurality of infusion apparatuses such as an injector, an infusion set, an indwelling needle and an in vivo duct, etc., to treat patients. No needle is required by the connecting device, thus injuries and accidental infection of medical staff can be avoided in the course of transfusion operation and that liquid flows to the downstream medical apparatus in the normal direction by the connecting device is ensured.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically a kind of connecting device for medical purposes.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 silicon 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.
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 connecting device for medical purposes 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 connecting device for medical purposes, 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 Elastic valve core is arranged in described upper shell chamber and upstream-end opening, Elastic valve core is that an elastomeric material constitutes, 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 elastic corrugated tube portion, in the middle of it is cavity, fixedly connected with lower house in the bottom, variation by own vol, be used for controlling flowing by described chamber liquid, it 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.Be convenient to the turnover of air in the lower corrugation tube portion cavity, and then guarantee that Elastic valve core brings into play its elastic reaction.
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.When Elastic valve core was in sealing state, liquid did not flow; When Elastic valve core is in pressured state, because Elastic valve core corrugated tube part external diameter is suitable with upper shell chamber internal diameter, upper shell chamber inner wall axial notch is as infusion channel, guaranteed the normal circulation of liquid, particularly Elastic valve core can make liquid be produced the forward flow that promptly enters the human body direction towards the downstream medical apparatus and instruments by chamber in the moment that flicks.
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 inserting medical apparatus and instruments such as transfusion device when the upper shell upstream-end opening, Elastic valve core is in pressured state, and sealing is removed, liquid can be in described chamber and downstream medical apparatus and instruments proper flow.After having infused, when extracting armarium out, Elastic valve core recovers to be filled in chamber and the upstream-end opening by the strain of its underpart corrugated tube part 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.
The present invention is because but the Elastic valve core that the volume elastic expansion of packing in upper shell chamber and upstream-end opening changes is used for controlling flowing by described chamber liquid.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.Its simple in structure, deft design 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 invention sealing state.
Fig. 3 is the schematic cross-section of invention pressured state.
Fig. 4 is the structural representation of a kind of Elastic valve core of the present invention.
Among the figure: 1. upper shell, 11. chambers, 12. upstream-end opening, 13. grooves, 2. Elastic valve core, 21. barrel portion, 22. ring packing projectioies, 23. cavitys, 24. corrugated tube parts, 25. passages, 26. the groove infusion channel, 3. lower house, 31. screwed unions, 32. Connection Blocks, 33. transfusion through holes.
The specific embodiment
By Fig. 1, Fig. 2 and Fig. 3 as can be seen, a kind of connecting device for medical purposes 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 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.Upper shell 1, lower house 3 material therefors are medical grade plastic materials.
Characteristics of the present invention are: 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.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.
Be provided with the passage 25 that communicates with the elastic corrugated tube portion cavity 23 in bottom in the middle of the Elastic valve core 2 upper cylinder parts 21 of the present invention, 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 Elastic valve core 2 of the present invention, so that the entering of liquid when inserting upstream such as syringe medical apparatus and instruments.
Also have transfusion through hole 33 in the middle of the lower house 3 of the present invention, 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.
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 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 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 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 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 (3)
1. connecting device for medical purposes, 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 Elastic valve core is arranged in described upper shell chamber and upstream-end opening, Elastic valve core is that an elastomeric material constitutes, 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 elastic corrugated tube portion, in the middle of it is cavity, fixedly connected with lower house in the bottom, variation by own vol, be used for controlling flowing by described chamber liquid, it 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.
2. connecting device for medical purposes according to claim 1 is characterized in that: plane, said Elastic valve core top is provided with a groove infusion channel.
3. connecting device for medical purposes 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 |
|---|---|---|---|
| CN 200810139306 CN101357250B (en) | 2008-08-27 | 2008-08-27 | Connecting device for medical purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810139306 CN101357250B (en) | 2008-08-27 | 2008-08-27 | Connecting device for medical purposes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101357250A CN101357250A (en) | 2009-02-04 |
| CN101357250B true CN101357250B (en) | 2010-07-28 |
Family
ID=40329935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810139306 Active CN101357250B (en) | 2008-08-27 | 2008-08-27 | Connecting device for medical purposes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101357250B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019032B (en) * | 2009-09-09 | 2013-10-23 | 北京谊安医疗***股份有限公司 | Check valve, valve core and air feed module thereof |
| CN102019020B (en) * | 2009-09-23 | 2012-11-14 | 邵贤斌 | Combined type joint and bronchus blocking sleeve with same |
| DK3313490T3 (en) * | 2015-06-24 | 2021-02-08 | Linear Health Sciences Llc | HOSE SYSTEM |
| CN105664337B (en) * | 2016-04-15 | 2019-09-03 | 董鹏 | Break-through conduit and its expansion method |
-
2008
- 2008-08-27 CN CN 200810139306 patent/CN101357250B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101357250A (en) | 2009-02-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |