CN115177855B - Non-rebound double-end needleless connector - Google Patents
Non-rebound double-end needleless connector Download PDFInfo
- Publication number
- CN115177855B CN115177855B CN202210729391.5A CN202210729391A CN115177855B CN 115177855 B CN115177855 B CN 115177855B CN 202210729391 A CN202210729391 A CN 202210729391A CN 115177855 B CN115177855 B CN 115177855B
- Authority
- CN
- China
- Prior art keywords
- support
- main body
- shell
- rebound
- piece
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001990 intravenous administration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000003462 vein Anatomy 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
- A61M39/02—Access sites
-
- 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
- A61M2039/0036—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
- A61M2039/0072—Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions
-
- 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
- A61M39/02—Access sites
- A61M2039/0205—Access sites for injecting media
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 discloses an anti-rebound double-head needleless connector, which comprises a main body piece, a support piece and a connecting seat fixedly connected with the main body piece, wherein the main body piece comprises a main body shell and a main body inner piece, and a mixing cavity communicated with the connecting seat is formed between the main body inner piece and a main body shell; the support piece comprises a support shell and a support inner piece, wherein a valve type base is arranged in the output end of the support shell, an abutting surface is arranged at the axle center of the valve type base, a group of circulation ports are formed between the abutting surface and the inner wall of the support shell, the support inner piece is in an elastic solid rod shape, the bottom end of a support rod part is clamped in the valve type base and abuts against the abutting surface, the support head part is movably clamped in an outer interface of the support shell to form a sealing structure, a circulation cavity is formed between the support rod part and the support shell, and the circulation cavity is communicated with the mixing cavity through the circulation ports. The body pole portion in this scheme is solid structure, and first bead and the second bead on the middle part can improve intensity, reaches the purpose that prevents that the support internal part from not kick-backing.
Description
Technical Field
The invention relates to the technical field of injection instruments, in particular to an anti-rebound double-head needleless connector.
Background
When long-term repeated transfusion is required in the process of intravenous transfusion treatment, an intravenous indwelling needle or indwelling catheter entering into a human vein is connected with a liquid medicine injection device through a joint, so that operations such as medicine adding are realized. In order to more conveniently use the indwelling needle, a positive pressure connecting piece for connecting the indwelling needle and the transfusion hanging bottle is generally matched. The positive pressure connecting piece is connected with the catheter of the indwelling needle at one end and connected with the catheter of the infusion hanging bottle at the other end, so that the infusion hanging bottle and the catheter connected with the infusion hanging bottle are directly replaced when changing the medicine, the positive pressure connecting piece and the indwelling needle are not required to be replaced, unnecessary replacement procedures are reduced, the workload of medical staff is reduced, and the patient is less afflicted.
In the prior art, in order to facilitate the liquid adding or the simultaneous input of two kinds of liquid medicine, a double-ended needleless connector is generated, and the double-ended needleless connector is usually formed by connecting two communicated fluid cavities. In actual use, the double-ended needleless connector cannot be well sealed due to the double-ended structure, particularly the connector arranged at the side part, so that the problem of liquid leakage is easily caused, and the safety risk of infection exists. Therefore, how to ensure the tightness of the double-ended needleless connector is a problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an anti-rebound double-head needleless connector.
The aim of the invention is achieved by the following technical scheme:
the anti-rebound double-head needleless connector comprises a main body part, a support part communicated with the support part and a connecting seat fixedly connected with the main body part, wherein the main body part comprises a main body shell and a main body inner part, the inside of a main body rod part of the main body inner part is hollow and fixedly connected with the connecting seat, the main body head part of the main body inner part is movably clamped in an input port of a main body shell to form a sealing structure, and a mixing cavity communicated with the connecting seat is formed between the main body inner part and the main body shell; the support piece comprises a support shell and a support inner piece, wherein the output end of the support shell is communicated with the mixing cavity, a valve type base is arranged in the output end, the axle center of the valve type base is provided with an abutting surface, a group of circulation ports are formed between the abutting surface and the inner wall of the support shell, the support inner piece is in an elastic solid rod shape, the bottom end of a support rod part is clamped in the valve type base and is abutted to the abutting surface, the support head part of the support inner piece is movably clamped in an outer interface of the support shell to form a sealing structure, a circulation cavity is formed between the support rod part and the support shell, and the circulation cavity is communicated with the mixing cavity through the circulation ports; the support body inner part is provided with a middle part, the middle part is positioned between the support body rod part and the support body head part, the diameter of the end part of the middle part is larger than that of the support body head part, the side wall of the middle part ring is provided with a convex part, the side wall of the convex part is uniformly distributed with a group of first convex ribs extending along the axial direction of the support body inner part, and concave flow passages are formed between every two first convex ribs at intervals; the side wall of the middle part ring is uniformly provided with a group of second ribs extending along the axial direction of the support inner part, and concave flow passages are formed between every two second ribs at intervals.
Preferably, a first step surface is formed at an end of the intermediate portion, and the first step surface abuts against an inner wall of the outer joint to seal the outer joint.
Preferably, a second step surface is formed between the protruding portion and the middle portion, the diameter of the second step surface is larger than that of the first step surface, and the second step surface abuts against the inner wall of the support body shell to seal the inner end of the outer interface.
Preferably, the top of the first rib is formed with an inclined surface matched with the inner wall of the support body shell.
Preferably, the second rib does not protrude outside the boss.
Preferably, the flap type base comprises a group of connecting arms which are uniformly distributed circumferentially by taking the abutting surface as a circle center, the abutting surface is fixedly connected with the inner wall of the support body shell through the connecting arms, and the circulating ports are formed by arranging the connecting arms at intervals.
Preferably, the connecting seat comprises a connecting portion with a hollow inside, the main body rod portion is sleeved on the connecting portion, and the connecting portion is communicated with the outside atmosphere through a group of connecting holes, so that the inside of the main body rod portion is communicated with the outside atmosphere.
Preferably, the connecting seat is provided with a connecting pipe, and the connecting pipe is communicated with the mixing cavity.
Preferably, a third step surface is arranged at the joint of the main body head and the main body rod, and the third step surface is abutted with the inner wall of the main body shell so as to seal the input port.
Preferably, the outer walls of the input port and the outer port are both provided with threads.
The beneficial effects of the invention are mainly as follows:
1. the main body part and the support part are arranged to realize double-head connection, the support inner part arranged in the support part is provided with a solid support rod part to ensure that the support inner part has stronger elasticity, and the support inner part is provided with a middle part, the first convex rib and the second convex rib on the middle part can improve the strength of the middle part, so that the support inner part cannot excessively deform, can quickly reset when no external force is extruded, and achieves the aim of preventing the support inner part from rebounding;
2. the valve type base is arranged in the support shell to be communicated with the main body shell, and plays a limiting role on the support inner part, so that the solid structure of the support rod part can not block the communication between the main body part and the support part;
3. a first step surface and a second step surface are formed between the middle part of the support inner part and the support head part to form double sealing, so that the support inner part is ensured to seal an outer interface of the support inner part after rebound, and the tightness of the support member is ensured; the third step surface is arranged on the main body inner part to seal the input port of the main body inner part after rebound, so that the tightness of the main body inner part is ensured.
Drawings
The technical scheme of the invention is further described below with reference to the accompanying drawings:
fig. 1: schematic diagrams of embodiments of the present invention;
fig. 2: a cross-sectional view of an embodiment of the present invention;
fig. 3: an enlarged schematic view of portion a in fig. 2;
fig. 4: schematic illustration of a body internal part in an embodiment of the invention;
fig. 5: schematic diagram of a flap seat in an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. The embodiments are not limited to the present invention, and structural, methodological, or functional modifications of the invention from those skilled in the art are included within the scope of the invention.
In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.
As shown in fig. 1 to 5, the present invention discloses an anti-rebound double-ended needleless connector, comprising a main body member, a support member communicated with the support member, and a connection seat 3 fixedly connected with the main body member, wherein the main body member comprises a main body housing 1 and a main body inner member 2, a main body rod 201 of the main body inner member 2 is hollow and fixedly connected with the connection seat 3, a main body head 202 thereof is movably clamped in an input port 101 of the main body housing 1 to form a sealing structure, and a mixing cavity 100 communicated with the connection seat 3 is formed between the main body inner member 2 and the main body housing 1; the support piece comprises a support shell 4 and a support inner piece 5, the output end of the support shell 4 is communicated with the mixing cavity 100, a valve type base 401 is arranged in the output end, the axle center of the valve type base 401 is provided with an abutting surface 4011, a group of circulating ports 4012 are formed between the abutting surface 4011 and the inner wall of the support shell 4, the support inner piece 5 is in a solid rod shape with elasticity, the bottom end of a support rod portion 501 is clamped in the valve type base 401 and is abutted to the abutting surface 4011, a support head 502 is movably clamped in an outer interface 402 of the support shell 4 to form a sealing structure, a circulating cavity 200 is formed between the support rod portion 501 and the support shell 4, and the circulating cavity 200 is communicated with the mixing cavity 100 through the circulating ports 4012.
As shown in fig. 5, the flap seat 401 includes a set of connection arms 4013 circumferentially and uniformly distributed around the contact surface 4011, the contact surface 4011 is fixedly connected with the inner wall of the support housing 4 through the connection arms 4013, and the circulation ports 4012 are formed by arranging the connection arms 4013 in pairs at intervals. The number of the connecting arms 4023 is preferably 3, which are in contact with the support rod 501 and play a role of limiting the support rod 501 to avoid blocking the flow port 4012 after the support rod 501 is deformed. A connection arm may be provided in the fluid port 4012 to enhance the connection efficiency between the abutment surface 4011 and the support casing 4.
The invention is provided with the main body part and the support part to realize double-head connection, wherein the support inner part 5 arranged in the support part is of a solid structure, and the support rod part 501 has stronger rebound resilience by the arrangement of the solid structure, so that the support rod part can rebound rapidly after liquid adding is completed, the purpose of preventing the support inner part 5 from rebound is achieved, the support inner part 501 is ensured to seal the support shell 4 after rebound, and the use safety is ensured.
As shown in particular in fig. 2-4, the endo-body 5 has an intermediate portion 503, the intermediate portion 503 being located between the shaft portion 501 and the head portion 502, the intermediate portion 503 having a larger end diameter than the head portion 503. The large diameter of the middle portion 503 can enhance the strength of the junction between the support shaft 501 and the support head 502, so that the junction can rebound quickly after being deformed.
In order to ensure that the outer port 402 is sealed quickly after the inner branch 5 rebounds, a first step surface 504 is formed at an end of the intermediate portion 503, and the first step surface 504 abuts against an inner wall of the outer port 402 to seal the outer port 402. The first step surface 504 may extend into the interior of the outer port 402 to form a first reseal.
Further, a protrusion 506 is formed on a side wall of the middle portion 503, a second step surface 505 is formed between the protrusion 506 and the middle portion 503, the diameter of the second step surface 505 is larger than that of the first step surface 504, and the second step surface 505 abuts against an inner wall of the support housing 4 to seal an inner end of the outer port 402. The second step surface 505 abuts against the inner wall of the support housing 4 to form a second seal with the outer port 402, and the first step surface 504 and the second step surface 505 form a double seal to ensure that the support inner 5 seals the outer port 402 after rebounding, thereby preventing the liquid medicine from flowing out of the support.
As shown in fig. 2-4, a set of first ribs 507 extending along the axial direction of the support body 5 are uniformly distributed on the side wall of the boss 506, concave flow passages are formed between the first ribs 507 at intervals, and an inclined plane 5071 matched with the inner wall of the support body housing 4 is formed at the top of the first ribs 507. After the resilience of the inner body part 5, the inclined surface 5071 is matched with the inner wall of the support housing 4, so that the first convex rib 507 can avoid the sealing action of the second step surface 505. The concave flow channel is arranged so that the flow rate in the flow-through chamber 200 is not reduced while sufficient resilience is ensured.
Further, a set of second ribs 508 extending along the axial direction of the support body 5 are uniformly distributed on the side wall of the middle portion 503, and concave flow passages are formed between the second ribs 508 at intervals, and the second ribs do not protrude outside the convex portions 506. The first ribs 507 and the second ribs 508 can improve the strength of the middle portion 503, so that the middle portion is not excessively deformed, and the middle portion can be quickly reset when no external force is applied to the middle portion, so that the purpose of preventing the support body 5 from rebounding is achieved. The first ribs 507 and the second ribs 508 are preferably arranged in a one-to-one opposite manner, so that concave flow passages between every two of the first ribs 507 and concave flow passages between every two of the second ribs 508 can be correspondingly arranged, thereby maximally improving the flow in the concave flow passages and improving the fluency of transfusion.
As shown in fig. 2, the connection seat 3 includes a connection portion 301 having a hollow interior, the body stem 201 is sleeved on the connection portion 301, and the connection portion 301 communicates with the external atmosphere through a set of connection holes 302, so that the interior of the body stem 201 communicates with the external atmosphere. Such a structure helps the air in the body stem 201 to be discharged in time when being deformed and to be replenished in time when being rebounded.
The connection holder 3 has a connection pipe 303, and the connection pipe 303 communicates with the mixing chamber 100. The chemical solutions in the mixing chamber 100 and the flow chamber 200 are output through the connection pipe 303.
A third step surface 203 is provided at the connection between the main body head 202 and the main body stem 201, and the third step surface 203 abuts against the inner wall of the main body casing 1 to seal the input port 101.
The outer walls of the inlet port 101 and the outer port 402 are threaded to facilitate connection with infusion tools and the like.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. Prevent not resilience formula double-end needleless joint, including the main part, with the support spare that the main part is linked together and with connecting seat (3) of main part rigid coupling, its characterized in that: the main body piece comprises a main body shell (1) and a main body inner piece (2), a main body rod part (201) of the main body inner piece (2) is hollow and fixedly connected with the connecting seat (3), a main body head part (202) of the main body inner piece is movably clamped in an input port (101) of the main body shell (1) to form a sealing structure, and a mixing cavity (100) communicated with the connecting seat (3) is formed between the main body inner piece (2) and the main body shell (1); the support piece comprises a support shell (4) and a support inner piece (5), wherein an output end of the support shell (4) is communicated with the mixing cavity (100), a valve type base (401) is arranged in the output end, an axle center of the valve type base (401) is provided with a supporting surface (4011), a group of circulating ports (4012) are formed between the supporting surface (4011) and the inner wall of the support shell (4), the support inner piece (5) is in an elastic solid rod shape, the bottom end of a support rod part (501) of the support inner piece is clamped in the valve type base (401) and is abutted against the supporting surface (4011), a support head (502) of the support inner piece is movably clamped in an outer interface (402) of the support shell (4) to form a sealing structure, a circulating cavity (200) is formed between the support rod part (501) and the support shell (4), and the circulating cavity (200) is communicated with the mixing cavity (100) through the circulating ports (4012); the support body inner part (5) is provided with a middle part (503), the middle part (503) is positioned between the support body rod part (501) and the support body head part (502), the diameter of the end part of the middle part (503) is larger than that of the support body head part (502), a convex part (506) is formed on the side wall of the middle part (503) ring, a group of first convex ribs (507) extending along the axial direction of the support body inner part (5) are uniformly distributed on the side wall of the convex part (506), and concave flow passages are formed between every two of the first convex ribs (507) at intervals; the side wall of the middle part (503) is uniformly distributed with a group of second ribs (508) extending along the axial direction of the support body inner part (5), and concave flow passages are formed between every two second ribs (508) at intervals.
2. The non-rebound dual-ended needleless connector of claim 1, wherein: an end of the intermediate portion (503) is formed with a first step surface (504), and the first step surface (504) abuts against an inner wall of the outer port (402) to seal the outer port (402).
3. The non-rebound dual-ended needleless connector of claim 2, wherein: a second step surface (505) is formed between the convex part (506) and the middle part (503), the diameter of the second step surface (505) is larger than that of the first step surface (504), and the second step surface (505) is abutted with the inner wall of the support body shell (4) so as to seal the inner end of the outer interface (402).
4. The non-rebound dual-ended needleless connector of claim 3 wherein: the top of the first rib (507) is provided with an inclined surface (5071) matched with the inner wall of the support body shell (4).
5. The non-rebound dual-ended needleless connector of claim 4 wherein: the second rib (508) does not protrude beyond the boss (506).
6. The non-rebound dual-ended needleless connector of claim 1, wherein: the valve type base (401) comprises a group of connecting arms (4013) which are circumferentially and uniformly distributed by taking the abutting surface (4011) as a circle center, the abutting surface (4011) is fixedly connected with the inner wall of the support shell (4) through the connecting arms (4013), and the circulating ports (4012) are formed by the interval arrangement between every two connecting arms (4013).
7. The non-rebound dual-ended needleless connector of claim 1, wherein: the connecting seat (3) comprises a connecting portion (301) with a hollow inside, the main body rod portion (201) is sleeved on the connecting portion (301), and the connecting portion (301) is communicated with the outside atmosphere through a group of connecting holes (302) so that the inside of the main body rod portion (201) is communicated with the outside atmosphere.
8. The non-rebound dual-ended needleless connector of claim 7, wherein: the connection base (3) is provided with a connection pipe (303), and the connection pipe (303) is communicated with the mixing cavity (100).
9. The non-rebound dual-ended needleless connector of claim 8, wherein: a third step surface (203) is arranged at the joint of the main body head (202) and the main body rod (201), and the third step surface (203) is abutted with the inner wall of the main body shell (1) so as to seal the input port (101).
10. The non-rebound dual-ended needleless connector of claim 1, wherein: the outer walls of the input port (101) and the outer port (402) are provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210729391.5A CN115177855B (en) | 2022-06-24 | 2022-06-24 | Non-rebound double-end needleless connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210729391.5A CN115177855B (en) | 2022-06-24 | 2022-06-24 | Non-rebound double-end needleless connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115177855A CN115177855A (en) | 2022-10-14 |
| CN115177855B true CN115177855B (en) | 2024-02-27 |
Family
ID=83515258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210729391.5A Active CN115177855B (en) | 2022-06-24 | 2022-06-24 | Non-rebound double-end needleless connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115177855B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6171287B1 (en) * | 1998-05-29 | 2001-01-09 | Lawrence A. Lynn | Luer receiver and method for fluid transfer |
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| WO2017016092A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection y-type connector device |
| WO2017016093A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection cap |
| CN213724104U (en) * | 2020-09-09 | 2021-07-20 | 苏州林华医疗器械股份有限公司 | Double-end positive pressure needleless connecting piece |
| CN213724102U (en) * | 2020-09-02 | 2021-07-20 | 苏州林华医疗器械股份有限公司 | Anti-needling positive pressure connecting joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11986619B2 (en) * | 2020-07-30 | 2024-05-21 | Carefusion 303, Inc. | Needleless connector having check valve with lip seal |
-
2022
- 2022-06-24 CN CN202210729391.5A patent/CN115177855B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6171287B1 (en) * | 1998-05-29 | 2001-01-09 | Lawrence A. Lynn | Luer receiver and method for fluid transfer |
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| WO2017016092A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection y-type connector device |
| WO2017016093A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection cap |
| CN213724102U (en) * | 2020-09-02 | 2021-07-20 | 苏州林华医疗器械股份有限公司 | Anti-needling positive pressure connecting joint |
| CN213724104U (en) * | 2020-09-09 | 2021-07-20 | 苏州林华医疗器械股份有限公司 | Double-end positive pressure needleless connecting piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115177855A (en) | 2022-10-14 |
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