CN108030976B - Positive pressure three-way infusion connecting device - Google Patents
Positive pressure three-way infusion connecting device Download PDFInfo
- Publication number
- CN108030976B CN108030976B CN201810046400.4A CN201810046400A CN108030976B CN 108030976 B CN108030976 B CN 108030976B CN 201810046400 A CN201810046400 A CN 201810046400A CN 108030976 B CN108030976 B CN 108030976B
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- Prior art keywords
- capsule
- hollow
- inner core
- connector
- connector shell
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- 238000001802 infusion Methods 0.000 title claims abstract description 30
- 239000002775 capsule Substances 0.000 claims abstract description 175
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000003814 drug Substances 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 239000008280 blood Substances 0.000 claims description 4
- 210000004369 blood Anatomy 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011144 upstream manufacturing 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
- 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
-
- 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
- A61M39/0208—Subcutaneous access sites for injecting or removing fluids
-
- 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
- A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
-
- 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)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical equipment for liquid infusion, in particular to a positive pressure three-way infusion connecting device, which is characterized in that a positive pressure mechanism is arranged in a connector shell, the positive pressure mechanism comprises a hollow capsule, a capsule inner core and a connector, the hollow capsule is provided with a wavy hollow telescopic main body, one end of the telescopic main body is provided with an open connector connecting part, the connector connecting part is connected with the connector so as to be communicated with the outside atmosphere, the other end of the telescopic main body is sealed by the capsule inner core connecting part, the front section of the capsule inner core connecting part is a tubular through hole for inserting the capsule inner core, the rear end of the capsule inner core connecting part is an inverted cone, and the bottom edge of the inverted cone is connected with the telescopic section main body; the capsule inner core is inserted into the tubular through hole, the connecting head is provided with a capsule connecting seat, the joint connecting part on the telescopic main body is sleeved on the capsule connecting seat, and the connecting head is bonded and fixed at the other end of the hollow tube cavity of the connector shell.
Description
Technical Field
The invention relates to the technical field of medical instruments for liquid infusion, in particular to a positive pressure three-way infusion connecting device which can be used for communicating liquid with one medical instrument when being connected with the other medical instrument and generating forward flow in the directions of an outlet and a downstream medical instrument when being disconnected with the upstream medical instrument.
Background
At present, when a hospital infuses a patient with a medical fluid, an infusion connection device such as a connector is often used to facilitate the transfer of fluid from one medical device to another, such as a connection between an infusion set and an indwelling needle. The positive pressure infusion connecting device is a needleless infusion device, so that falling scraps generated by needle point puncture are prevented from polluting liquid medicine, meanwhile, medical staff are prevented from being accidentally injured by the needle point, a positive pressure effect can be generated after connection is disconnected, and the occurrence of tube blockage caused by blood return is avoided.
Patent document CN 104815363a discloses a positive pressure connecting piece, which comprises a needleless connector and a rubber plug, wherein the rubber plug consists of a solid part and a hollow part, the rubber plug is arranged in an inner cavity of the needleless connector, when the positive pressure connecting piece is used, the positive pressure connecting piece is connected with external infusion equipment, the external equipment presses the upper end face of the solid part, a groove is deformed after the solid part is pressed, the solid part presses the hollow part to deform, the external equipment is smoothly connected with the inner cavity, and when the external equipment leaves, the hollow part rebounds. In order to improve the rebound ability of the hollow part, the above document describes that ribs are arranged on the outer side of the hollow part, are discontinuous or form an included angle of 70 degrees, 85 degrees and 30 degrees with the horizontal plane or are X-shaped combined ribs, and are used for solving the problems that the rebound ability of the hollow part is weak or the hollow part is easy to block when rebounding.
In practice, the direction of the infusion pressure of the external device determines that the optimal deformation direction of the hollow part is coincident with the central axis of the hollow part, in the above technical scheme, the best resilience force can be obtained only when the rib is coincident with the central axis of the hollow part, namely, the rib is arranged on the outer wall of the hollow part in a flat way, and other schemes such as the intermittent rib or the included angles of 70 degrees, 85 degrees and 30 degrees between the rib and the horizontal plane are dispersed by the rib in the actual stress process, so that the smooth rebound effect of the hollow part along the central axis is reduced, and the clamping and the blocking are easy to occur along the rib direction; when the rib is a straight rib or an X-shaped combined rib, although better resilience force can be obtained, the hollow part can deform to cause barriers, so that when external infusion equipment is accessed, the hollow part cannot deform enough under the action of external infusion pressure, and the positive pressure effect is affected.
Besides, the existing solid part of the capsule is not beneficial to liquid circulation, and the solid part and the capsule part are the same in material and hardness, so that the capsule is not beneficial to transfusion; and sealing connection between the capsule solid part and the needleless connector needs a plurality of accessories to be assembled, so that the structure is complex, the assembly is complex and the cost is high.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides the positive pressure three-way infusion connecting device which has the advantages of reasonable structure, simple assembly, low production cost and stable capsule compression/rebound.
The invention is achieved by the following measures:
The positive pressure three-way infusion connecting device is provided with a connector shell with a hollow pipe cavity, a branch joint is arranged on the side face of the connector shell, the pipe cavity of the branch joint is communicated with the hollow pipe cavity of the connector shell, and the device is characterized in that a positive pressure mechanism is arranged in the connector shell and comprises a hollow capsule, a capsule inner core and a connector, the hollow capsule is provided with a wavy hollow telescopic main body, one end of the telescopic main body is provided with an open joint connecting part, the joint connecting part is connected with the connector so as to be communicated with the outside atmosphere, the other end of the telescopic main body is sealed through the capsule inner core connecting part, the front section of the capsule inner core connecting part is a tubular through hole for inserting a capsule inner core, the rear end of the capsule inner core connecting part is an inverted cone, and the bottom edge of the inverted cone is connected with the telescopic section main body; the capsule inner core is inserted into the tubular through hole, the connecting head is provided with a capsule connecting seat, the joint connecting part on the telescopic main body is sleeved on the capsule connecting seat, and the connecting head is bonded and fixed at the other end of the hollow tube cavity of the connector shell.
The connector is provided with a liquid passage and a gas passage for communicating the hollow capsule with the external atmosphere.
The connector shell is internally provided with the guide and diversion ribs which are used for preventing the capsule expansion section from abnormally expanding and playing a role in guiding the liquid medicine, the guide and diversion ribs are distributed on the inner wall of the connector shell corresponding to the placement position of the hollow capsule, the guide and diversion ribs extend along the capsule expansion direction, more than two guide and diversion ribs which are distributed on the inner wall of the hollow cavity of the connector shell at equal intervals are arranged, so that the compression/expansion action of the capsule expansion section is guided, the injected liquid is guided in a diversion manner, and preferably 8 guide and diversion ribs are arranged.
The capsule inner core is a plastic piece, the capsule inner core consists of a top plate and a plug-in part used for being connected with a hollow capsule, the plug-in part is in a rod shape, the plug-in part is in a hollow rod shape, and the bottom of the plug-in part is provided with a notch along the extending direction of a rod body, so that the bottom of the plug-in rod has deformability, and can be properly contracted when being plugged into the hollow capsule, the assembly operation is facilitated, the upper surface of the top plate of the capsule inner core is provided with a diversion trench, preferably a cross diversion trench, the center of the cross diversion trench coincides with the center of the top plate, and the liquid medicine is conveniently guided when the capsule inner core is used.
The outer edge of the tail end of the inserting part of the capsule inner core is provided with the annular boss, and the tail end of the tubular through hole at the front section of the connecting part of the capsule inner core is correspondingly provided with the annular inner groove matched with the annular inner groove, so that the annular boss is embedded into the annular inner groove when the capsule inner core is inserted into the tubular through hole, and the capsule inner core is tightly connected with the hollow capsule.
The inner wall of the hollow tube cavity of the connector shell is matched with the shape of the hollow capsule, namely, a part corresponding to the inverted cone of the hollow capsule is provided with an inclined plane matched with the outer wall of the hollow capsule, the inner diameter of the hollow tube cavity at the connecting section of the capsule inner core of the corresponding hollow capsule is matched with the outer diameter of the connecting section of the capsule inner core, and a liquid channel is formed between the hollow capsule and the connector shell.
The branch joint of the invention is a 45-degree infusion port.
The invention consists of a connector shell, a connector, a hollow capsule and a capsule inner core, wherein the telescopic main body of the hollow capsule is wave-shaped, which is favorable for compression and extension, has better compressibility and rebound resilience, effectively avoids the problem that the capsule does not rebound, the upper end of the hollow capsule is matched with the capsule inner core, the three-way shell is provided with two infusion ports, the straight type infusion port has positive pressure effect, and the 45-degree infusion port has no positive pressure effect, thus the hollow capsule is a standard luer locking connector. The inner wall of the connector shell is provided with 8 ribs, which is beneficial to the compression and rebound of the capsule and the diversion and diversion of the liquid medicine; the upper end of the hollow capsule is provided with a tubular through hole, the tubular through hole is in interference fit with the capsule inner core, the lower end of the hollow capsule is communicated with the joint vent hole, when the hollow capsule is compressed, air in the capsule can be discharged into the atmosphere, and when the hollow capsule rebounds, external air can enter the capsule; when in use, the external transfusion device is connected with the connector shell close to one end of the capsule inner core, the transfusion device extrudes the capsule inner core to compress the hollow capsule, at the moment, the liquid medicine is infused into the connector shell by the transfusion device and is conveyed to the connector along the gap between the hollow capsule and the connector shell, and then is output through the connector and is conveyed through the connector; after transfusion is finished, the transfusion apparatus is pulled out, the compressed hollow capsule rebounds, external atmosphere enters the hollow capsule through the gas passage on the connecting head, and the liquid medicine continues to advance under the action of the rebound force when the hollow capsule rebounds, thereby effectively preventing blood return generated after the transfusion apparatus is pulled out.
Compared with the prior art, the invention has the advantages of more stable compression and rebound of the capsule, less number of accessories, reasonable structure, simple assembly, low production cost and the like.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Figure 2 is a schematic diagram of the hollow capsule and the capsule core of the present invention.
Fig. 3 is a schematic view of the use state of the present invention.
Fig. 4 is a schematic structural view of a connector housing according to the present invention.
Figure 5 is a schematic view of the top plate of the capsule core of the present invention.
FIG. 6 is a schematic illustration of the flow of gas when the hollow capsule is compressed in accordance with the infusion set of the present invention.
FIG. 7 is a schematic illustration of the flow of fluid when the hollow capsule is compressed in accordance with the insertion of the infusion set of the present invention.
FIG. 8 is a schematic diagram showing the flow of gas when the infusion apparatus is pulled out and the hollow capsule rebounds.
Fig. 9 is a schematic structural view of the capsule core according to the present invention.
Reference numerals: the capsule comprises a connector 1, a hollow capsule 2, a connector shell 3, a capsule inner core 4, a capsule inner core connecting part 5, a telescopic main body 6, a connector connecting part 7, guide and diversion ribs 8, a notch 9, a top plate 10, an inserting part 11, an annular boss 12 and a diversion trench 13.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in the drawing, the invention provides a positive pressure three-way infusion connecting device, which is provided with a connector shell 3 with a hollow pipe cavity, a branch joint is arranged on the side surface of the connector shell 3, the pipe cavity of the branch joint is communicated with the hollow pipe cavity of the connector shell 3, and the device is characterized in that a positive pressure mechanism is arranged in the connector shell 3, the positive pressure mechanism comprises a hollow capsule 2, a capsule inner core 4 and a connector 1, the hollow capsule 2 is provided with a wavy hollow telescopic main body 6, one end of the telescopic main body 6 is provided with an open joint connecting part 7, the joint connecting part 7 is connected with the connector 1 so as to be communicated with the outside atmosphere, the other end of the telescopic main body 6 is closed by a capsule inner core connecting part 5, the front section of the capsule inner core connecting part 5 is a tubular through hole for inserting a capsule inner core, the rear end of the capsule inner core connecting part 5 is an inverted cone, and the bottom edge of the inverted cone is connected with the telescopic section main body 6; the capsule inner core 4 is inserted into the tubular through hole, the connector 1 is provided with a capsule connecting seat, the joint connecting part on the telescopic main body 6 is sleeved on the capsule connecting seat, and the connector 1 is bonded and fixed at the other end of the hollow tube cavity of the connector shell 3.
The connector 1 is provided with a liquid passage and a gas passage for communicating the hollow capsule with the external atmosphere.
The connector housing 3 is internally provided with guide and flow distribution ribs 8 which are used for preventing abnormal expansion and contraction of the capsule expansion section and can play a role in guiding the liquid medicine, the guide and flow distribution ribs 8 are distributed on the inner wall of the connector housing 3 corresponding to the placement position of the hollow capsule, the guide and flow distribution ribs 8 extend along the expansion and contraction direction of the capsule, more than two guide and flow distribution ribs 8 which are distributed on the inner wall of the hollow cavity of the connector housing at equal intervals are arranged, so that the compression/expansion action of the capsule expansion section is guided and the injected liquid is guided in a flow distribution manner, and preferably 8 guide and flow distribution ribs 8 are arranged.
As shown in figures 5 and 9, the capsule inner core 4 is a plastic part, the capsule inner core 4 is composed of a top plate 10 and a plug-in part 11 for connecting with a hollow capsule, the plug-in part 11 is in a rod shape and is in a hollow rod shape, and a notch 9 along the extending direction of a rod body is arranged at the bottom of the plug-in part 11, so that the bottom of the plug-in part 11 has deformability, and can be properly contracted when being plugged into the hollow capsule, the assembly operation is facilitated, the upper surface of the top plate 10 of the capsule inner core 4 is provided with a diversion trench 13, preferably a cross diversion trench, the center of the cross diversion trench coincides with the center of the top plate, and the liquid medicine is convenient to flow when in use.
The outer edge of the tail end of the inserting part 11 of the capsule inner core 4 is provided with an annular boss 12, and the tail end of the tubular through hole at the front section of the connecting part of the capsule inner core is correspondingly provided with an annular inner groove matched with the annular inner groove, so that when the capsule inner core is inserted into the tubular through hole, the annular boss is embedded into the annular inner groove, and the capsule inner core is tightly connected with the hollow capsule.
According to the invention, the inner wall of the hollow tube cavity of the connector shell 3 is adapted to the shape of the hollow capsule, namely, a part corresponding to the inverted cone of the hollow capsule is provided with an inclined plane adapted to the outer wall of the hollow capsule, the inner diameter of the hollow tube cavity at the connecting section of the capsule inner core of the corresponding hollow capsule is adapted to the outer diameter of the connecting section of the capsule inner core, and a liquid channel is formed between the hollow capsule and the connector shell.
The branch joint of the invention is a 45-degree infusion port.
The invention consists of a connector shell, a connector, a hollow capsule and a capsule inner core, wherein the telescopic main body of the hollow capsule is wave-shaped, which is favorable for compression and extension, has better compressibility and rebound resilience, effectively avoids the problem that the capsule does not rebound, the upper end of the hollow capsule is matched with the capsule inner core, the three-way shell is provided with two infusion ports, the straight type infusion port has positive pressure effect, and the 45-degree infusion port has no positive pressure effect, thus the hollow capsule is a standard luer locking connector. The inner wall of the connector shell is provided with 8 ribs, which is beneficial to the compression and rebound of the capsule and the diversion and diversion of the liquid medicine; the upper end of the hollow capsule is provided with a tubular through hole, the tubular through hole is in interference fit with the capsule inner core, the lower end of the hollow capsule is communicated with the joint vent hole, when the hollow capsule is compressed, air in the capsule can be discharged into the atmosphere, and when the hollow capsule rebounds, external air can enter the capsule; when in use, the external transfusion device is connected with the connector shell close to one end of the capsule inner core, the transfusion device extrudes the capsule inner core to compress the hollow capsule, at the moment, the liquid medicine is infused into the connector shell by the transfusion device and is conveyed to the connector along the gap between the hollow capsule and the connector shell, and then is output through the connector and is conveyed through the connector; after transfusion is finished, the transfusion apparatus is pulled out, the compressed hollow capsule rebounds, external atmosphere enters the hollow capsule through the gas passage on the connecting head, and the liquid medicine continues to advance under the action of the rebound force when the hollow capsule rebounds, thereby effectively preventing blood return generated after the transfusion apparatus is pulled out.
Compared with the prior art, the invention has the advantages of more stable compression and rebound of the capsule, less number of accessories, reasonable structure, simple assembly, low production cost and the like.
Claims (1)
1. The positive pressure three-way infusion connecting device is provided with a connector shell with a hollow pipe cavity, a branch joint is arranged on the side face of the connector shell, the pipe cavity of the branch joint is communicated with the hollow pipe cavity of the connector shell, and the device is characterized in that a positive pressure mechanism is arranged in the connector shell and comprises a hollow capsule, a capsule inner core and a connector, the hollow capsule is provided with a wavy hollow telescopic main body, one end of the telescopic main body is provided with an open joint connecting part, the joint connecting part is connected with the connector so as to be communicated with the outside atmosphere, the other end of the telescopic main body is sealed through the capsule inner core connecting part, the front section of the capsule inner core connecting part is a tubular through hole for inserting a capsule inner core, the rear end of the capsule inner core connecting part is an inverted cone, and the bottom edge of the inverted cone is connected with the telescopic section main body; the capsule inner core is inserted into the tubular through hole, the connecting head is provided with a capsule connecting seat, the joint connecting part on the telescopic main body is sleeved on the capsule connecting seat, and the connecting head is bonded and fixed at the other end of the hollow tube cavity of the connector shell; the connector is provided with a liquid passage and a gas passage for communicating the hollow capsule with the external atmosphere;
The connector shell is internally provided with guide and diversion ribs which are used for preventing the capsule expansion section from abnormally expanding and playing a role in guiding the liquid medicine, the guide and diversion ribs are distributed on the inner wall of the connector shell corresponding to the placement position of the hollow capsule, the guide and diversion ribs extend along the capsule expansion direction, more than two guide and diversion ribs which are distributed on the inner wall of the hollow cavity of the connector shell at equal intervals are arranged, so that the compression/expansion action of the capsule expansion section is guided and the injected liquid is shunted and guided;
The capsule inner core is a plastic piece and consists of a top plate and a plug-in part used for being connected with the hollow capsule, the plug-in part is in a rod shape, the plug-in part is in a hollow rod shape, and a notch along the extending direction of the rod body is arranged at the bottom of the plug-in part, so that the bottom of the plug-in part has deformation capability, and when the plug-in part is plugged into the hollow capsule, the plug-in part can be properly contracted, thus being beneficial to assembly operation, and the upper surface of the top plate of the capsule inner core is provided with a diversion trench; a cross diversion trench is arranged, the center of the cross diversion trench coincides with the center of the top plate, and the liquid medicine is conveniently diverted during use; the outer edge of the tail end of the inserting part of the capsule inner core is provided with an annular boss, and the tail end of the tubular through hole at the front section of the connecting part of the capsule inner core is correspondingly provided with an annular inner groove matched with the annular inner groove, so that when the capsule inner core is inserted into the tubular through hole, the annular boss is embedded into the annular inner groove, and the capsule inner core is tightly connected with the hollow capsule; the inner wall of the hollow tube cavity of the connector shell is matched with the shape of the hollow capsule, namely, a part corresponding to the inverted cone of the hollow capsule is provided with an inclined plane matched with the outer wall of the hollow capsule, the inner diameter of the hollow tube cavity at the connecting section of the capsule inner core of the corresponding hollow capsule is matched with the outer diameter of the connecting section of the capsule inner core, and a liquid channel is formed between the hollow capsule and the connector shell; the branch joint is a 45-degree infusion port;
When in use, the external transfusion device is connected with the connector shell close to one end of the capsule inner core, the transfusion device extrudes the capsule inner core to compress the hollow capsule, at the moment, the liquid medicine is infused into the connector shell by the transfusion device and is conveyed to the connector along the gap between the hollow capsule and the connector shell, and then is output through the connector and is conveyed through the connector; after transfusion is finished, the transfusion apparatus is pulled out, the compressed hollow capsule rebounds, external atmosphere enters the hollow capsule through the gas passage on the connecting head, and the liquid medicine continues to advance under the action of the rebound force when the hollow capsule rebounds, thereby effectively preventing blood return generated after the transfusion apparatus is pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046400.4A CN108030976B (en) | 2018-01-17 | 2018-01-17 | Positive pressure three-way infusion connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046400.4A CN108030976B (en) | 2018-01-17 | 2018-01-17 | Positive pressure three-way infusion connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108030976A CN108030976A (en) | 2018-05-15 |
| CN108030976B true CN108030976B (en) | 2024-07-23 |
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ID=62096317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810046400.4A Active CN108030976B (en) | 2018-01-17 | 2018-01-17 | Positive pressure three-way infusion connecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108030976B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN109999264B (en) * | 2019-04-26 | 2023-11-03 | 台州安融医疗器械有限公司 | Medical unidirectional positive pressure three-fork |
| US12031654B2 (en) | 2021-12-28 | 2024-07-09 | Cytiva Us Llc | Fluid connector |
| US12044342B2 (en) | 2021-12-28 | 2024-07-23 | Cytiva Us Llc | Fluid connector with slidable member |
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| CN104353148A (en) * | 2014-11-25 | 2015-02-18 | 上海康德莱企业发展集团医疗器械有限公司 | Positive-pressure joint for needleless medicated transfusion |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| CN208405567U (en) * | 2018-01-17 | 2019-01-22 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
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| US5470319A (en) * | 1994-06-20 | 1995-11-28 | Critical Device Corporation | Needleless injection site |
| JP3994478B2 (en) * | 1997-07-18 | 2007-10-17 | 日本シャーウッド株式会社 | Liquid infusion tool |
| CN1899633A (en) * | 2006-07-21 | 2007-01-24 | 张亚平 | Needleless seal transfusion joint |
| CN201356857Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Connector pipe type positive pressure vein remaining needle |
| US8394079B2 (en) * | 2010-07-30 | 2013-03-12 | Medtronic, Inc. | Medical delivery systems and apparatus |
| CN103071200B (en) * | 2013-01-29 | 2014-02-26 | 苏州林华医疗器械有限公司 | Positive-pressure needle-free connecting piece |
| CN203145117U (en) * | 2013-02-25 | 2013-08-21 | 爱康企业集团(上海)有限公司 | Hydrocyclone used in single stack drainage system |
| CN205007361U (en) * | 2015-07-29 | 2016-02-03 | 佳承精工股份有限公司 | Positive pressure needle-free injection Y-shaped joint device |
| CN106730119B (en) * | 2017-02-17 | 2023-05-02 | 河南曙光汇知康生物科技股份有限公司 | Needleless connector for transfusion |
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2018
- 2018-01-17 CN CN201810046400.4A patent/CN108030976B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353148A (en) * | 2014-11-25 | 2015-02-18 | 上海康德莱企业发展集团医疗器械有限公司 | Positive-pressure joint for needleless medicated transfusion |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| CN208405567U (en) * | 2018-01-17 | 2019-01-22 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108030976A (en) | 2018-05-15 |
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