CN113398462A - Zero-pressure needle-free infusion joint - Google Patents
Zero-pressure needle-free infusion joint Download PDFInfo
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- CN113398462A CN113398462A CN202110838330.8A CN202110838330A CN113398462A CN 113398462 A CN113398462 A CN 113398462A CN 202110838330 A CN202110838330 A CN 202110838330A CN 113398462 A CN113398462 A CN 113398462A
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- flexible compression
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- 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
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- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
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- Heart & Thoracic Surgery (AREA)
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- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a zero-pressure needleless infusion connects relates to the field that the infusion connects, and it includes casing and flexible compression piece, is equipped with in the casing and holds the chamber, and flexible compression piece is located and holds the intracavity, is equipped with export and inlet on the casing, and the lateral wall of flexible compression piece and the inner wall that holds the chamber are the interval and set up, offers in the flexible compression piece and has become the chamber, and it is the convergent setting towards the orientation of keeping away from each other along the relative both ends of flexible compression piece compression direction to become the chamber. When flexible compression piece received the exogenic action when compressed, the biggest department that the deformation chamber is located between the both ends outwards expands because of the compression, and then make flexible compression piece support tightly in the inner wall that holds the chamber, make the power that produces mutual oppression between the inner wall that holds the chamber and the flexible compression piece, thereby produce the thrust that orders about its reset to flexible compression piece, after flexible compression piece is compressed for a long time, be favorable to flexible compression piece to take place to kick-back, thereby the resilience performance of flexible compression piece has been improved.
Description
Technical Field
The application relates to the field of infusion connectors, in particular to a zero-pressure needle-free infusion connector.
Background
The needle-free infusion joint is mainly used for injecting liquid medicine, gravity infusion and liquid extraction in medical treatment, is commonly used with medical instruments for administration in clinical processes such as a three-way cock or an indwelling needle and is mainly divided into a positive pressure needle-free infusion joint, a negative pressure needle-free infusion joint and a zero pressure needle-free infusion joint. According to the clinical manifestation theory, the zero-pressure needleless infusion joint has the best performance and the highest clinical acceptance.
The zero-pressure needleless infusion joint has the characteristics that: in the process of withdrawing the needleless infusion joint after the injector and other luer joints are inserted in a butt joint mode or medicine supplementation is completed, positive pressure or negative pressure cannot be generated on the needleless infusion joint and liquid in a tube cavity, and the situation that air enters a human blood vessel or blood reflows is reduced.
The zero-pressure needleless infusion joint comprises a shell and a flexible compression piece arranged in the shell, wherein a liquid channel is required to be arranged in the shell, and the flexible compression piece is usually designed into a multilayer concave-convex structure or a multilayer notch structure, so that a syringe or a luer joint extends into the flexible compression piece and extrudes the flexible compression piece to enable liquid medicine to enter the liquid channel, and administration is realized.
But multilayer concave-convex structure and multilayer breach structure can't cooperate to keep somewhere needle or tee bend cock etc. long-time to keep somewhere the medical instrument that the human body was dosed and use jointly, after the compression was dosed and is exceeded 24 hours, the near liquid medicine of flexible compression piece becomes thick, make the resistance grow that the flexible compression piece took place to kick-back and receives, and flexible compression piece is compressed deformation for a long time, make the resilience performance of flexible compression piece not good, lead to clinical accident frequent emergence, await the improvement.
Disclosure of Invention
In order to improve the problem that the resilience performance is not good after the flexible compression piece of zero-pressure needleless infusion joint administers for a long time, the application provides a zero-pressure needleless infusion joint.
The application provides a zero-pressure needleless infusion joint adopts following technical scheme:
the utility model provides a zero-pressure needleless infusion connects, include the casing with set up in flexible compression piece on the casing, be equipped with in the casing and hold the chamber, flexible compression piece is located hold the intracavity, be equipped with export and inlet on the casing, the export is used for the intercommunication the inlet, the elasticity of flexible compression piece orders about flexible compression piece shutoff the export, the lateral wall of flexible compression piece with the inner wall that holds the chamber is the interval setting, set up tangible chamber in the flexible compression piece, the chamber is followed to appear becoming the chamber relative both ends of flexible compression piece compression direction are the convergent setting towards the direction of keeping away from each other, flexible compression piece is compressed and is made flexible compression piece support tightly in hold the inner wall in chamber.
By adopting the technical scheme, when the flexible compression piece is compressed under the action of external force, the deformation cavity is gradually reduced towards the direction away from each other along the opposite two ends of the compression direction of the flexible compression piece, therefore, the maximum position of the deformation cavity between the two ends is outwards expanded due to compression, so that the outer side wall of the flexible compression piece is tightly abutted against the inner wall of the accommodating cavity, and the force of mutual compression is generated between the inner wall of the accommodating cavity and the flexible compression piece, thereby generating thrust for driving the flexible compression piece to reset, after the flexible compression piece is compressed for a long time, the influence of the resistance generated by the liquid medicine on the resilience of the flexible compression piece is reduced due to the existence of the thrust, meanwhile, the elastic force generated by the resilience of the flexible compression piece after the flexible compression piece is compressed is increased due to the design that the two ends are gradually reduced, thereby reducing the condition that the flexible compression piece cannot be rebounded after long-time administration, and being beneficial for the resilience of the flexible compression piece, thereby improving the resilience of the flexible compression member.
Preferably, the casing includes the shell and sets up in luer connecting block on the shell, hold the chamber and pass through the shell with luer connecting block concatenation forms, the inlet is located on the luer connecting block, the export is used for the intercommunication hold the chamber, be equipped with exhaust passage on the luer connecting block, exhaust passage is used for the intercommunication external atmosphere with hold the chamber.
Through adopting above-mentioned technical scheme, set up exhaust passage, receive when exogenic action is compressed when flexible compression piece, realize holding the intracavity outside gas flow through exhaust passage, and then the equilibrium holds intracavity outside atmospheric pressure, reduced flexible compression piece and compressed the back for a long time, hold the intracavity and produce the condition that the negative pressure leads to the unable resilience of flexible compression piece to the resilience performance of flexible compression piece has further been improved.
Preferably, the housing is provided with a threaded section, the threaded section is located at one end of the housing close to the outlet, and the threaded section is used for being in threaded connection with a luer connector.
Through adopting above-mentioned technical scheme, set up the screw thread section for it is more convenient to connect luer joint.
Preferably, the luer connecting block is located on one side of the housing far away from the outlet and penetrates through the flexible compression piece, a liquid inlet channel communicated with the liquid inlet is arranged on the luer connecting block, the flexible compression piece is used for plugging the liquid inlet channel, a cutting slit is formed in the flexible compression piece, the cutting slit is located at one end, close to the outlet, of the flexible compression piece, and the cutting slit is used for enabling a liquid outlet end on the luer connector to extend into the flexible compression piece, so that the luer connector is communicated with the liquid inlet channel.
By adopting the technical scheme, the liquid inlet channel and the cutting seam are arranged, when the medicine is administered, the luer connector is twisted, the cutting seam is poked by the luer connector, so that the liquid outlet end on the luer connector extends into the cutting seam, and the luer connector is communicated with the liquid inlet channel, thereby realizing the administration; when the administration is not needed, the luer connector is twisted to enable the liquid outlet end of the luer connector to withdraw from the cutting seam, the flexible compression piece rebounds and plugs the liquid inlet channel and the outlet, and therefore the administration is stopped.
Preferably, the luer connecting block including set up in fixed part on the shell with set up in wear to establish the portion on the fixed part, it passes through to hold the chamber the shell with the fixed part concatenation forms, the inlet is located on the fixed part, inlet channel locates wear to establish in the portion, flexible compression piece cover is located wear to establish the outside of portion, just flexible compression piece support tightly in the fixed part.
Through adopting above-mentioned technical scheme, set up fixed part and installation department, when the flexible compression piece of installation, locate the portion of wearing to establish outside with flexible compression piece cover, then install the fixed part on the shell, can accomplish the installation of flexible compression piece for it is more convenient to install flexible compression piece.
Preferably, the end part of the flexible compression piece close to the outlet is outwards convexly arranged in a circular arc shape.
By adopting the technical scheme, when the luer connector extrudes the flexible compression piece, the clearance between the luer connector and the flexible compression piece is reduced, and the contact sealing performance between the flexible compression piece and the luer connector is improved.
Preferably, the housing and the luer connection block are fixedly connected.
Through adopting above-mentioned technical scheme, compare in order to assemble shell and luer connecting block through setting up mechanical buckle structure, reduced because of setting up the size extension that mechanical buckle structure leads to zero-pressure needleless infusion to connect, be favorable to shortening zero-pressure needleless infusion to connect's size, patient's comfort in use when improving clinical use.
Preferably, the inner wall of the accommodating cavity is provided with a limiting surface, the outer side wall of the flexible compression part is provided with a limiting block, the limiting block is positioned on one side, away from the outlet, of the limiting surface, and the limiting surface is used for abutting against the limiting block.
Through adopting above-mentioned technical scheme, set up spacing face and stopper, when flexible compression piece takes place to kick-back, thereby support tightly in the stopper through spacing face and carry on spacingly to flexible compression piece to reduce the condition that flexible compression piece excessively kick-backs and lead to nature compression piece to stretch out the export and then blocked by the inner wall of export, make follow-up flexible compression piece of compression more convenient.
Preferably, the flexible compression element is in a straight cylinder shape along the compression direction, and the deformation cavity can be in a straight cylinder shape or a conical cylinder shape or an oval shape.
Through adopting above-mentioned technical scheme, when flexible compression piece receives the exogenic action by the compression, be favorable to flexible compression piece to take place folding deformation in the biggest department in deformation chamber, further increased the elasticity that takes place to kick-back after flexible compression piece is compressed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the deformation cavity, when the flexible compression piece is compressed under the action of external force, the maximum position of the deformation cavity between the two ends is expanded outwards due to compression, so that the flexible compression piece is tightly abutted against the inner wall of the accommodating cavity, and a force for mutual compression is generated between the inner wall of the accommodating cavity and the flexible compression piece, so that a thrust for driving the flexible compression piece to reset is generated on the flexible compression piece, and after the flexible compression piece is compressed for a long time, the flexible compression piece is favorable for rebounding, so that the rebound performance of the flexible compression piece is improved;
2. by arranging the exhaust channel, when the flexible compression piece is compressed under the action of external force, the air pressure inside and outside the accommodating cavity is balanced through the exhaust channel, so that the condition that the flexible compression piece cannot rebound due to negative pressure generated in the accommodating cavity after the flexible compression piece is compressed for a long time is reduced, and the rebound performance of the flexible compression piece is further improved;
3. through with shell and luer connecting block fixed connection, reduced because of setting up the size extension that mechanical buckle structure leads to zero-pressure needleless infusion to connect, be favorable to shortening zero-pressure needleless infusion to connect's size, patient's comfort level when improving clinical use.
Drawings
FIG. 1 is an overall schematic view of an embodiment of the present application;
fig. 2 is a cross-sectional view of an embodiment of the present application, mainly showing the structure of the deformation chamber.
Description of reference numerals: 1. a housing; 11. a housing; 111. an outlet; 112. a threaded segment; 12. a luer connection block; 121. a fixed part; 122. a penetration part; 2. a flexible compression member; 21. a deformation chamber; 3. a limiting block; 31. a limiting surface; 4. an exhaust passage; 5. a liquid inlet; 51. a liquid inlet channel; 6. cutting a seam; 7. a convex ring; 8. a receiving cavity.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a zero-pressure needle-free infusion connector. Referring to fig. 1, the zero-pressure needle-free infusion joint comprises a shell 1 and a flexible compression piece 2, wherein the flexible compression piece 2 is positioned in the shell 1.
Referring to fig. 1 and 2, the housing 1 includes a housing 11 and a luer connection block 12, the housing 11 is located on one side of the luer connection block 12, an outlet 111 is opened on an outer side wall of the housing 11, and the outlet 111 is located at one end of the housing 11 far away from the luer connection block 12. The outer side wall of the housing 11 is further formed with a threaded section 112, the threaded section 112 is located at one end of the housing 11 close to the outlet 111, and the threaded section 112 is used for being in threaded connection with a luer connector.
Referring to fig. 2, the luer connection block 12 includes a fixing portion 121 and a penetrating portion 122, and the fixing portion 121 is located on a side of the housing 11 away from the outlet 111 and is fixedly connected to the housing 11. The fixing portion 121 and the housing 11 are spliced to form an accommodating cavity 8, the penetrating portion 122 is located on one side of the fixing portion 121 close to the housing 11 and located in the accommodating cavity 8, and the penetrating portion 122 is fixedly connected with the fixing portion 121. In this embodiment, the fixing portion 121 and the penetrating portion 122 are integrally provided.
In the related art, the housing 11 and the luer connecting block 12 of the zero-pressure needleless infusion connector are generally assembled by a mechanical snap structure. This application is in-service use, fixed through ultrasonic bonding between fixed part 121 and the shell 11, and ultrasonic bonding has guaranteed the firm in connection degree between fixed part 121 and the shell 11, and fixed part 121 and shell 11 fixed connection have reduced the length that sets up the required increase of mechanical buckle structure simultaneously, are favorable to shortening the total length that zero-pressure needleless infusion connects, patient's comfort level when improving clinical use.
Referring to fig. 2, the flexible compression element 2 is located in the accommodating cavity 8 and sleeved outside the penetrating portion 122, one end of the flexible compression element 2 close to the fixing portion 121 abuts against an outer side wall of the fixing portion 121 close to the penetrating portion 122, and one end of the flexible compression element 2 far from the fixing portion 121 is aligned with the outlet 111. The elastic force of the flexible compression part 2 drives the flexible compression part 2 to block the outlet 111, and the end part of the flexible compression part 2 close to the outlet 111 is outwards arranged in a circular arc bulge manner, so that the contact tightness between the luer connector and the flexible compression part 2 is improved. In this embodiment, the flexible compressing member 2 is made of silica gel.
Referring to fig. 2, a limiting block 3 is fixed on the outer side wall of the flexible member, the limiting block 3 is an annular block, and the limiting block 3 is arranged around the periphery of the flexible compression member 2. The inner wall of the accommodating cavity 8 is fixed with a limiting surface 31, the limiting surface 31 is positioned on one side of the limiting block 3 close to the outlet 111, the limiting surface 31 is an annular surface, and the limiting surface 31 is arranged around the periphery of the flexible compression part 2. The limiting surface 31 is used for abutting against the limiting block 3. The elasticity of the flexible compression part 2 enables the limiting block 3 on the flexible compression part 2 to abut against the limiting surface 31, so that the flexible compression part 2 is limited. In this embodiment, the limiting block 3 and the flexible compressing member 2 are integrally disposed.
Referring to fig. 2, the flexible compressing member 2 is in a straight column shape along the compressing direction thereof, and the outer side wall of the portion of the flexible compressing member 2 away from the outlet 111 and the inner wall of the accommodating cavity 8 are spaced apart from each other at the position of the limiting block 3. Set up in the flexible compression piece 2 and have become chamber 21, become chamber 21 and be located one side that export 111 was kept away from to spacing face 31, and become chamber 21 and be the convergent setting towards the direction of keeping away from each other along the relative both ends of flexible compression piece 2 compression direction, the biggest department that becomes chamber 21 and be located between the relative both ends is located one side that export 111 is kept away from to stopper 3. It should be noted that in practical use, the deformation chamber 21 may be arranged in a straight cylinder shape or a tapered cylinder shape or an oval shape.
Referring to fig. 2, the outer side wall of the flexible compression member 2 is outwardly extended to form a convex ring 7, the convex ring 7 is located at one end of the flexible compression member 2 close to the fixing portion 121, and the convex ring 7 is arranged around the periphery of the flexible compression member 2 and abuts against the fixing portion 121, so that the contact area between the flexible compression member 2 and the fixing portion 121 is increased, the flexible compression member 2 is supported, and the stability of compression of the flexible compression member 2 is improved. In this embodiment, the flexible compression element 2 and the collar 7 are integrally formed.
Referring to fig. 2, the outlet 111 is used for communicating with the accommodating cavity 8, the fixing portion 121 is provided with an exhaust passage 4, the exhaust passage 4 is located on two opposite sides of the fixing portion 121 along the compression direction of the flexible compression element 2, and the exhaust passage 4 is used for communicating with the outside atmosphere and the accommodating cavity 8. When flexible compression piece 2 received luer to connect the extrusion by the compression, held the inside and outside atmospheric pressure of chamber 8 through exhaust passage 4 balance, reduced flexible compression piece 2 by long-time compression back, hold the condition that produces the negative pressure in the chamber 8 and lead to flexible compression piece 2 can't kick-back, improved the resilience performance of flexible compression piece 2.
Referring to fig. 2, the end surface of the fixing portion 121 far away from the penetrating portion 122 is provided with a liquid inlet 5, the penetrating portion 122 is provided with a liquid inlet channel 51, the liquid inlet channel 51 penetrates through the penetrating portion 122 along the compression direction of the flexible compression element 2, the liquid inlet channel 51 extends towards the direction close to the fixing portion 121 and is communicated with the liquid inlet 5, and the outlet 111 is used for communicating the liquid inlet 5. The penetrating portion 122 penetrates through the flexible compression element 2, one end, far away from the fixing portion 121, of the penetrating portion 122 is located in the flexible compression element 2 and abuts against the flexible compression element 2, and the flexible compression element 2 is used for blocking the liquid inlet channel 51.
Referring to fig. 2, a slit 6 is formed in the outer side wall of the flexible compression member 2, the slit 6 is located at one end of the flexible compression member 2 close to the outlet 111, and the slit 6 is used for extending in a liquid outlet end of the luer connector. When the zero-pressure needleless infusion joint is not used, the incision 6 is in a closed state to ensure the tightness of the liquid inlet channel 51.
When the medicine is administered, the luer connector is connected to the thread section 112 in a threaded manner to realize the connection between the luer connector and the zero-pressure needleless infusion connector, then the luer connector is twisted, the cutting slit 6 is poked open by the luer connector, so that the liquid outlet end of the luer connector extends into the cutting slit 6, and the luer connector is communicated with the liquid inlet channel 51, so that the medicine is administered.
When the administration is not needed, the luer connector is twisted to enable the liquid outlet end of the luer connector to withdraw from the cutting slit 6, the cutting slit 6 resets due to the elastic force of the flexible compression piece 2 until the cutting slit 6 is closed, the flexible compression piece 2 blocks the liquid inlet channel 51 again, the administration is stopped, and meanwhile the flexible compression piece 2 rebounds to block the outlet 111. The outlet 111 communicates with the liquid inlet 5 through the engagement of the slit 6 and the liquid inlet passage 51.
The implementation principle of the zero-pressure needle-free infusion joint in the embodiment of the application is as follows:
when the luer connector is twisted to enable the upper end part of the luer connector to extrude the flexible compression piece 2, the flexible compression piece 2 is compressed, and the deformation cavity 21 is arranged in a tapered mode towards the direction away from each other along the opposite two ends of the compression direction of the flexible compression piece 2, so that the maximum position of the deformation cavity 21 between the two ends expands outwards due to compression, the outer side wall, corresponding to the maximum position of the flexible compression piece 2 and the deformation cavity 21, abuts against the inner wall of the accommodating cavity 8, force pressing each other is generated between the inner wall of the accommodating cavity 8 and the flexible compression piece 2, and thrust driving the flexible compression piece 2 to reset is generated.
After flexible compression piece 2 is compressed for a long time, because of the existence of thrust, reduced the influence of the resistance that the liquid medicine kick-backed to flexible compression piece 2 and produced, the design that both ends are the convergent setting simultaneously has increased flexible compression piece 2 and has taken place the elasticity of kick-backing after being compressed, thereby reduced the unable condition of kick-backing of flexible compression piece 2 after dosing for a long time, be favorable to flexible compression piece 2 to take place to kick-back, thereby improved the resilience performance of flexible compression piece 2.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a zero pressure needleless infusion connects, include casing (1) and set up in flexible compression piece (2) on casing (1), be equipped with in casing (1) and hold chamber (8), flexible compression piece (2) are located hold in chamber (8), be equipped with export (111) and inlet (5) on casing (1), export (111) are used for the intercommunication inlet (5), its characterized in that: the elasticity of flexible compression spare (2) orders about flexible compression spare (2) shutoff export (111), the lateral wall of flexible compression spare (2) with the inner wall that holds chamber (8) is the interval setting, set up in flexible compression spare (2) and have become chamber (21), it sets up to become chamber (21) to follow to become chamber (21) relative both ends of flexible compression spare (2) compression direction are the convergent setting towards the direction of keeping away from each other, flexible compression spare (2) are compressed and make flexible compression spare (2) support tightly in hold the inner wall in chamber (8).
2. The zero-pressure needle-free infusion connector according to claim 1, wherein: casing (1) include shell (11) and set up in luer connecting block (12) on shell (11), it passes through to hold chamber (8) shell (11) with luer connecting block (12) concatenation forms, inlet (5) are located on luer connecting block (12), export (111) are used for the intercommunication hold chamber (8), be equipped with exhaust passage (4) on luer connecting block (12), exhaust passage (4) be used for the intercommunication external atmosphere with hold chamber (8).
3. The zero-pressure needle-free infusion connector according to claim 2, wherein: a threaded section (112) is arranged on the shell (11), the threaded section (112) is located at one end, close to the outlet (111), of the shell (11), and the threaded section (112) is used for being in threaded connection with a luer connector.
4. The zero-pressure needle-free infusion connector according to claim 3, wherein: the luer connecting block (12) is positioned on one side, far away from the outlet (111), of the shell (11) and penetrates through the flexible compression piece (2), a liquid inlet channel (51) communicated with the liquid inlet (5) is formed in the luer connecting block (12), the flexible compression piece (2) is used for plugging the liquid inlet channel (51), a cutting slit (6) is formed in the flexible compression piece (2), the cutting slit (6) is positioned at one end, close to the outlet (111), of the flexible compression piece (2), and the cutting slit (6) is used for extending a liquid outlet end on the luer connector, so that the luer connector is communicated with the liquid inlet channel (51).
5. The zero-pressure needle-free infusion connector according to claim 4, wherein: luer connecting block (12) including set up in fixed part (121) on shell (11) with set up in wear to establish portion (122) on fixed part (121), hold chamber (8) and pass through shell (11) with fixed part (121) concatenation forms, inlet (5) are located on fixed part (121), inlet channel (51) are located wear to establish on portion (122), flexible compression piece (2) cover is located wear to establish the outside of portion (122), just flexible compression piece (2) support tightly in fixed part (121).
6. The zero-pressure needle-free infusion connector according to claim 3, wherein: the end part of the flexible compression piece (2) close to the outlet (111) is outwards arranged in a circular arc bulge mode.
7. The zero-pressure needle-free infusion connector according to claim 2, wherein: the shell (11) is fixedly connected with the luer connecting block (12).
8. The zero-pressure needle-free infusion connector according to claim 1, wherein: the flexible compression piece is characterized in that a limiting face (31) is arranged on the inner wall of the accommodating cavity (8), a limiting block (3) is arranged on the outer side wall of the flexible compression piece (2), the limiting block (3) is located on one side, away from the outlet (111), of the limiting face (31), and the limiting face (31) is used for abutting against the limiting block (3).
9. The zero-pressure needle-free infusion connector according to claim 1, wherein: the flexible compression piece (2) is in a straight column shape along the compression direction, and the deformation cavity (21) can be in a straight column shape, a conical column shape or an oval shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838330.8A CN113398462A (en) | 2021-07-23 | 2021-07-23 | Zero-pressure needle-free infusion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838330.8A CN113398462A (en) | 2021-07-23 | 2021-07-23 | Zero-pressure needle-free infusion joint |
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| Publication Number | Publication Date |
|---|---|
| CN113398462A true CN113398462A (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110838330.8A Pending CN113398462A (en) | 2021-07-23 | 2021-07-23 | Zero-pressure needle-free infusion joint |
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| CN (1) | CN113398462A (en) |
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| US20110048540A1 (en) * | 2008-03-04 | 2011-03-03 | Stroup David K | Devices, assemblies, and methods for controlling fluid flow |
| CN206325063U (en) * | 2016-08-18 | 2017-07-14 | 宁湘龙 | Medical Needleless barotropic joint |
| WO2017163789A1 (en) * | 2016-03-24 | 2017-09-28 | テルモ株式会社 | Medical connector and infusion set |
| CN209790609U (en) * | 2018-12-29 | 2019-12-17 | 广东百合医疗科技股份有限公司 | Large-flow needle-free zero-pressure infusion joint |
| CN209790516U (en) * | 2018-12-29 | 2019-12-17 | 广东百合医疗科技股份有限公司 | Balanced pressure needleless infusion joint |
| CN209827791U (en) * | 2019-04-08 | 2019-12-24 | 深圳安特医疗股份有限公司 | Needleless infusion joint |
| CN215351561U (en) * | 2021-07-23 | 2021-12-31 | 弘汇(台州)医疗科技有限公司 | Zero-pressure needle-free infusion joint |
-
2021
- 2021-07-23 CN CN202110838330.8A patent/CN113398462A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110048540A1 (en) * | 2008-03-04 | 2011-03-03 | Stroup David K | Devices, assemblies, and methods for controlling fluid flow |
| WO2017163789A1 (en) * | 2016-03-24 | 2017-09-28 | テルモ株式会社 | Medical connector and infusion set |
| CN206325063U (en) * | 2016-08-18 | 2017-07-14 | 宁湘龙 | Medical Needleless barotropic joint |
| CN209790609U (en) * | 2018-12-29 | 2019-12-17 | 广东百合医疗科技股份有限公司 | Large-flow needle-free zero-pressure infusion joint |
| CN209790516U (en) * | 2018-12-29 | 2019-12-17 | 广东百合医疗科技股份有限公司 | Balanced pressure needleless infusion joint |
| CN209827791U (en) * | 2019-04-08 | 2019-12-24 | 深圳安特医疗股份有限公司 | Needleless infusion joint |
| CN215351561U (en) * | 2021-07-23 | 2021-12-31 | 弘汇(台州)医疗科技有限公司 | Zero-pressure needle-free infusion joint |
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Application publication date: 20210917 |
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| RJ01 | Rejection of invention patent application after publication |