CN108452434B - Multiple unidirectional airtight joint and pipeline device - Google Patents
Multiple unidirectional airtight joint and pipeline device Download PDFInfo
- Publication number
- CN108452434B CN108452434B CN201810510302.1A CN201810510302A CN108452434B CN 108452434 B CN108452434 B CN 108452434B CN 201810510302 A CN201810510302 A CN 201810510302A CN 108452434 B CN108452434 B CN 108452434B
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- CN
- China
- Prior art keywords
- gasket
- support
- valve pocket
- cavity
- bracket
- 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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- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000003814 drug Substances 0.000 claims abstract description 29
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000001802 infusion Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
-
- 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
-
- 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
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2493—Check valve with complex design, e.g. several inlets and outlets and several check valves in one body
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 utility model discloses a multiple unidirectional airtight joint and a pipeline device, which comprise a valve body, a first bracket, a first elastic gasket, a second bracket and a second elastic gasket, wherein the valve body is provided with a valve cavity penetrating up and down, the second bracket is arranged in the valve cavity and divides the valve cavity into an upper valve cavity and a lower valve cavity, the second bracket is provided with a liquid medicine channel connecting the upper valve cavity and the lower valve cavity, the upper valve cavity is provided with a step part and a gate, the second bracket is provided with a second sharp point, the second gasket is positioned between the step part and the second sharp point, the first bracket is arranged in the lower valve cavity, the first bracket is provided with the first sharp point, and the first gasket is positioned between the first sharp point and the second bracket. The first gasket and the second gasket have the functions of opening and reverse automatic sealing when in forward pressure, double sealing is realized, and the use safety of the sealing joint is effectively ensured.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a unidirectional airtight joint.
Background
The Chinese patent of utility model titled "unidirectional sealed joint" and publication No. CN204307202U discloses a unidirectional sealed joint which realizes reverse sealing through an elastic sealing plate, but after the liquid medicine reversely enters the interior of the joint, if the sealing plate is out of function, the unidirectional sealed function is invalid, and the risk of clinical unsafe is caused.
Disclosure of Invention
The utility model provides a novel unidirectional airtight joint.
The utility model provides a multiple unidirectional airtight joint, which comprises a valve body, a first bracket, a first gasket with elasticity, a second bracket and a second gasket with elasticity, wherein the valve body is provided with a valve cavity penetrating up and down, the top of the valve cavity is an upper interface end, the bottom of the valve cavity is a lower interface end, the second bracket is arranged in the valve cavity and divides the valve cavity into an upper valve cavity and a lower valve cavity, the second bracket is provided with a liquid medicine channel connected with the upper valve cavity and the lower valve cavity, the upper valve cavity is provided with a step part and a gate, the second bracket is provided with a second sharp point, the lower surface of the second gasket is in butt joint with the second sharp point, the edge of the upper surface of the second gasket is in butt joint with the step part and seals the gate, the first bracket is arranged in the lower valve cavity, the first bracket is provided with a first sharp point, the lower surface of the first gasket is in butt joint with the first sharp point, the edge of the upper surface of the first gasket is in butt joint with the second bracket and seals the upper surface of the valve cavity, the second bracket is in butt joint with the second sharp point, and the elastic deformation is caused by the second gasket and the elastic deformation of the edge and the second gasket when the liquid medicine channel is in forward pressure separation. The first sharp point may be located at the top end of the first stent. The second sharp point may be located at the top end of the second stent.
The first gasket is located inside the lower valve cavity, and the second gasket is located inside the upper valve cavity. When the liquid medicine is positively input, the sealing of the second gasket to the gate is released, the sealing of the first gasket to the liquid medicine channel is released, so that the liquid medicine can flow from the upper interface end to the lower interface end, namely, the channel between the upper interface end and the lower interface end is conducted, and the function of opening the channel when the liquid medicine is positively pressurized can be realized.
The step part is provided with a circle of second sealing ring protruding downwards, the second support is provided with a circle of first sealing ring protruding downwards, the first gasket is abutted with the first sealing ring, and the second gasket is abutted with the second sealing ring. The second seal ring may be in line contact with the second gasket. The first seal ring may be in line contact with the first gasket.
The second support comprises a base and a support frame, the liquid medicine channel penetrates through the upper surface and the lower surface of the base, the support frame is arranged on the upper surface of the base, the second sharp point is arranged on the top end of the support frame, the first sealing ring is arranged on the lower surface of the base in a protruding mode, and the first gasket seals the liquid medicine channel below.
The valve body comprises a fixed integral straight-through and a main body, the straight-through is provided with a second large cavity with a larger inner diameter and a second small cavity with a smaller inner diameter, a gate and a step part are formed at the joint of the second large cavity and the second small cavity, the main body is provided with a first large cavity with a larger inner diameter and a first small cavity with a smaller inner diameter, the second support is fixed at the joint of the straight-through and the main body, the first gasket is arranged in the first large cavity, and the second gasket is arranged in the second large cavity. The second large volume and the second small volume may form the upper valve chamber. The first large and small chambers may form the lower valve chamber.
A pipeline device comprises a communication seat and the multiple unidirectional airtight connectors.
The beneficial effects of the utility model are as follows: the first gasket and the second gasket have the functions of opening and reverse automatic sealing when in forward pressure, double sealing is realized, and the use safety of the sealing joint is effectively ensured.
Drawings
Fig. 1 is an exploded perspective view of the multiple unidirectional sealing joint of the present embodiment;
FIG. 2 is a schematic cross-sectional view of a second bracket of the multiple unidirectional sealing joint of the present embodiment;
FIG. 3 is a schematic cross-sectional view of the multiple unidirectional closure joint of the present embodiment;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
fig. 5 is a schematic structural diagram of a pipeline apparatus using the multiple unidirectional sealing joint of the present embodiment.
Detailed Description
The utility model will be described in further detail below with reference to the drawings by means of specific embodiments.
As shown in fig. 1 to 5, the multiple unidirectional sealing joint 100 of the present embodiment includes a multiple through 1, a first gasket 2, a second gasket 3, and a main body 4. The through 1 has a screw end 11, and the screw end 11 can be connected to a pipe joint or an equipment joint to deliver a medical fluid. The first gasket 2 is a circular gasket or a square gasket with elasticity, which is installed in the inner cavity of the main body 4, and has the functions of automatic reverse sealing and automatic opening when pressure is applied in the forward direction. The second gasket 3 is a circular gasket or a square gasket with elasticity, is arranged in the inner cavity of the straight-through 1, has the functions of automatic reverse sealing and automatic opening when pressure exists in the forward direction, and realizes double sealing. The main body 4 has a port tube 41, which can be connected to a medical fluid line. The body 4 is assembled with the through 1 to form a valve body.
In this embodiment, the screw thread end 11 is a liquid inlet end, which can be connected to an infusion set connector. The mouthpiece 41 is a liquid outlet port that can be connected to a medical instrument, such as various medical fluid connection lines, from which fluid can flow in, ultimately through the mouthpiece to the medical instrument.
As shown in fig. 1 to 5, the multiple unidirectional sealing joint 100 of the present embodiment includes a through-passage 1, a second bracket 5, a second gasket 3, a first bracket 6, a first gasket 2, and a main body 4. The through 1 is a tubular body which is penetrated up and down and is provided with a second small cavity 12 with a smaller inner diameter and a second large cavity 13 with a larger inner diameter, the second small cavity 12 is positioned above the second large cavity 13, and a step part 14 and a gate 15 are formed at the joint of the second large cavity 13 and the second small cavity 12. The second small cavity 12 has a screw end 11, and the screw end 11 can be connected with other connecting pipe joints or equipment joints, so that the liquid medicine can be introduced into the sealed joint. The bottom of the second large cavity 13 is provided with a second positioning step 16.
The main body 4 is a tubular body penetrating up and down, and has a first large cavity 42 with a larger inner diameter and a first small cavity 44 with a smaller inner diameter, and the first large cavity 42 is located above the first small cavity 44. The top of the first large cavity 42 is provided with a first positioning step 43 corresponding to the second positioning step 16. The first small volume 44 has a mouthpiece 41 that is connectable to a medical instrument for receiving a medical fluid. The second bracket 5 includes a base 51 and a supporting frame 52, the base 51 having an upper surface 53 and a lower surface 54 opposite to each other, and a liquid medicine passage 55 is formed through the upper surface 53 and the lower surface 54. The base 51 is fixed at the junction of the body 4 and the through 1. The supporting frame 52 is mounted on the upper surface 53 of the base, and has a second peak 56 at the top. The second gasket 3 may be made of elastic material such as rubber or plastic, and the center of the lower surface thereof is supported on the second peak 56; the edge of the upper surface of the second gasket 3 abuts against the through step 14.
The first bracket 6 is mounted in the first large cavity 42 of the main body, and the top of the first bracket is provided with a first sharp point 61. The first gasket 2 may be made of elastic material such as rubber or plastic, and the center of the lower surface thereof is supported on the first sharp point 61; the edge of the upper surface of the first gasket abuts against the lower surface 54 of the second holder base, and the second gasket can seal the liquid medicine passage 55 at the lower side.
During assembly, the through second positioning step 16 is matched with the first positioning step 43 of the main body in a positioning way, the second bracket 5 is fixed at the joint of the through and the main body, and the second gasket 3 is positioned in the through second large cavity and between the through step part 14 and the second sharp point 56 of the second bracket; the first gasket 2 is located in the first large cavity 42 of the body between the first sharp point 61 of the first bracket and the lower surface of the base 51 of the second bracket.
The positive pressure connector has an initial state and an infusion state, and in the initial state, the second gasket 3 seals the through gate 15 to isolate the second large cavity 13 from the second small cavity 12; the first gasket 2 seals the liquid medicine passage 55 to isolate the liquid medicine passage 55 from the first large chamber 42 and the first small chamber 44 of the main body, so that the through 1 and the main body 4 are not communicated with each other. When the liquid medicine flows in from the screw tooth end 11 to the direction A, the edge of the second gasket 3 elastically deforms under the action of the pressure of the liquid medicine and is separated from the step part 14, so that the gate 15 is opened, and the second small cavity 12, the second large cavity 13 and the liquid medicine channel 55 are communicated; under the action of the pressure of the liquid medicine, the edge of the first gasket 2 is elastically deformed to be separated from the lower surface 54 of the base 51, so that the liquid medicine channel 55 is communicated with the first large cavity 42 and the first small cavity 44, and the liquid medicine can flow into the interface tube 41 from the screw thread end 11. When the liquid medicine flows reversely from the interface tube 41 to the first gasket, the first gasket 2 and the base 51 are pressed more and more tightly under the action of the liquid medicine pressure, so that the liquid medicine channel 55 is tightly sealed, and the positive pressure joint is in a cut-off state from the interface tube 41 to the screw end 11. Even if the first gasket 2 fails, the second gasket 3 can still function as a reverse automatic seal to shut off.
In this embodiment, the lower surface of the base has a ring of first sealing rings 57 protruding downward, and the first gasket 2 is located between the first sealing rings 57 and the first sharp point 61. The straight-through step 14 has a ring of second sealing rings 17 protruding downwards, the second gasket 3 being located between the second sealing rings 17 and the second sharp point 56. In the forward infusion, the edge of the first gasket 2 is elastically deformed to be separated from the first seal ring 57, and the edge of the second gasket 3 is elastically deformed to be separated from the second seal ring 17.
In this embodiment, the straight-through and the main body are fixed integrally to form a valve body having a hollow valve cavity, the top of the valve cavity is provided with a screw thread end as an upper interface end, and the bottom of the valve cavity is provided with an interface tube as a lower interface end. The second bracket is fixed in the valve cavity and divides the valve cavity into an upper valve cavity and a lower valve cavity, and in general, the upper valve cavity can comprise the second large containing cavity and the second small containing cavity which are communicated with each other; the lower valve cavity is a first large containing cavity and a first small containing cavity which are communicated as described above. The forward direction refers to the direction from the upper interface end to the lower interface end; the reverse direction refers to the direction from the lower interface end to the upper interface end. The second small through cavity can be integrally used as an upper interface end for connection, or can be only partially used as the upper interface end. The first small cavity of the main body can be integrally used as a lower interface end for connection, or can be only partially used as the lower interface end.
As shown in fig. 1 to 5, it is an application structure of the multiple unidirectional sealing joint. A pipe device comprises a communication seat 200, wherein the communication seat is provided with at least one axial inlet and a plurality of radial inlets, and the inlets can be connected with the lower interface end of the multiple unidirectional sealing joint 100. The outlet of the communication seat is connected with a medical instrument which needs to use liquid medicine.
The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model.
Claims (4)
1. The utility model provides a multiple unidirectional airtight joint which characterized in that, including valve body, first support, have elastic first gasket, second support and have elastic second gasket, the valve body has the valve pocket that runs through from top to bottom, the top of valve pocket is the upper junction end, the bottom of valve pocket is the lower junction end, the second support is located inside the valve pocket and divide into upper valve pocket and lower valve pocket with the valve pocket, the second support has the liquid medicine passageway of connecting upper valve pocket and lower valve pocket, the upper valve pocket has step and gate, the second support has the second point, the lower surface of second gasket with the second point butt, the edge of second gasket upper surface with the step butt and seal the gate, the first support is located inside the lower valve pocket, the first support has first point, the lower surface of first gasket with the first point butt, the edge of first gasket upper surface with the second support butt and seal the liquid medicine passageway, when the second support is just sealed, the elastic deformation is in the step and the elastic deformation is followed to the second gasket with the lower edge of second gasket; the step part is provided with a circle of second sealing ring protruding downwards, the second support is provided with a circle of first sealing ring protruding downwards, the first gasket is abutted with the first sealing ring, and the second gasket is abutted with the second sealing ring.
2. The multiple unidirectional sealing joint of claim 1, wherein the second bracket comprises a base and a supporting frame, the liquid medicine channel penetrates through the upper surface and the lower surface of the base, the supporting frame is arranged on the upper surface of the base, the second sharp point is arranged on the top end of the supporting frame, the first sealing ring is arranged on the lower surface of the base in a protruding mode, and the first gasket seals the liquid medicine channel below.
3. The multiple unidirectional closing joint of claim 1, wherein the valve body comprises a fixed integral through and a main body, the through has a second large cavity with a larger inner diameter and a second small cavity with a smaller inner diameter, the junction of the second large cavity and the second small cavity forms the gate and the step, the main body has a first large cavity with a larger inner diameter and a first small cavity with a smaller inner diameter, the second bracket is fixed at the junction of the through and the main body, the first gasket is arranged in the first large cavity, and the second gasket is arranged in the second large cavity.
4. A line set comprising a communication seat, further comprising at least two multiple unidirectional closure joints according to any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510302.1A CN108452434B (en) | 2018-05-24 | 2018-05-24 | Multiple unidirectional airtight joint and pipeline device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510302.1A CN108452434B (en) | 2018-05-24 | 2018-05-24 | Multiple unidirectional airtight joint and pipeline device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108452434A CN108452434A (en) | 2018-08-28 |
| CN108452434B true CN108452434B (en) | 2024-01-09 |
Family
ID=63214664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810510302.1A Active CN108452434B (en) | 2018-05-24 | 2018-05-24 | Multiple unidirectional airtight joint and pipeline device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108452434B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203915768U (en) * | 2014-04-11 | 2014-11-05 | 福建省百仕韦医用高分子股份有限公司 | Secondary filter medical infusion joint |
| WO2015017962A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Annular groove-positioned in vitro infusion catheter stagnation switch |
| CN204307202U (en) * | 2014-11-18 | 2015-05-06 | 深圳市安特高科实业有限公司 | One-way sealing enclosed joint |
| CN204533670U (en) * | 2015-01-21 | 2015-08-05 | 宁波华平金属制品有限公司 | A kind of secondary check valve |
| CN205145280U (en) * | 2015-10-10 | 2016-04-13 | 王学博 | Malleation does not have adapter |
-
2018
- 2018-05-24 CN CN201810510302.1A patent/CN108452434B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015017962A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Annular groove-positioned in vitro infusion catheter stagnation switch |
| CN203915768U (en) * | 2014-04-11 | 2014-11-05 | 福建省百仕韦医用高分子股份有限公司 | Secondary filter medical infusion joint |
| CN204307202U (en) * | 2014-11-18 | 2015-05-06 | 深圳市安特高科实业有限公司 | One-way sealing enclosed joint |
| CN204533670U (en) * | 2015-01-21 | 2015-08-05 | 宁波华平金属制品有限公司 | A kind of secondary check valve |
| CN205145280U (en) * | 2015-10-10 | 2016-04-13 | 王学博 | Malleation does not have adapter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108452434A (en) | 2018-08-28 |
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