CN105999470B - Needle-free positive pressure type remaining needle - Google Patents
Needle-free positive pressure type remaining needle Download PDFInfo
- Publication number
- CN105999470B CN105999470B CN201610508426.7A CN201610508426A CN105999470B CN 105999470 B CN105999470 B CN 105999470B CN 201610508426 A CN201610508426 A CN 201610508426A CN 105999470 B CN105999470 B CN 105999470B
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- Prior art keywords
- rubber plug
- top end
- needle
- branches
- infusion
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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
- 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
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
Abstract
The invention relates to a needle-free positive pressure type remaining needle, which comprises a base, wherein the upper side of the base is provided with a main branch top end, the lower side of the main branch top end is provided with a rubber plug B, the lower side of the rubber plug B is provided with a piston, both sides of the left side of the piston are provided with sealing rings, the middle part of the right side of the base is connected with a valve shell, the top end of the valve shell is provided with a side branch top end, the lower side of the side branch top end is provided with a rubber plug seat, the lower side of the rubber plug seat is provided with a spring, and both sides of the spring are provided with rubber plugs A.
Description
Technical Field
The invention belongs to the field of medical infusion medical instruments, and particularly relates to a needle-free positive pressure type remaining needle.
Background
Along with the development of medical instruments and the improvement of nursing quality, people pay more and more attention to safe infusion. At present, common indwelling needles in the market are gradually replaced by needle-free and positive pressure indwelling needles, and the safety indwelling needles can not only prevent blood-borne infection risk caused by the fact that clinical medical care personnel are injured by a needle, but also reduce the occurrence probability of clinical thrombosis and tube blockage. However, the safety indwelling needle also has some disadvantages, such as: the infusion connector that uses on the market is the tapered joint of national standard, and the positive pressure needle on the market leads to the malleation to connect not the tapered joint of national standard because the restriction of joint, at the infusion in-process, because accurate transfusion system and joint and malleation connect the in-process of being connected, the size does not match, when leading to connecting, connects the atress inhomogeneous, and inside bearing force is too big, and roughly infusion connects the fracture weeping ratio serious. The connector head end is convex, and clinical disinfection operation is inconvenient, easily produces bacterial growing, influences infusion safety. Meanwhile, the positive pressure joint on the market only realizes the needleless of the main branch, and the lateral branches can be punctured by scalp needles, so that the scene of needleless infusion cannot be reached, and therefore, clinical medical care personnel all have the risk of occupational exposure caused by needle stick injuries.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the novel medical nursing bed which has higher safety performance, convenient disinfection and better suitability and effectively reduces the pain of a patient.
The purpose of the invention is realized as follows: the utility model provides a needle is kept somewhere to needleless positive pressure type, it includes the base, the upside of base be provided with the main branch top, the downside on main branch top be provided with plug B, plug B's downside be provided with the piston, the left side both sides of piston all be provided with the sealing washer, the right side middle part of base be connected with the valve casing, the top of valve casing be provided with the side branch top, the downside on side branch top be provided with the plug seat, the downside of plug seat be provided with the spring, the left and right sides of spring all be provided with plug A.
The top ends of the main branches and the top ends of the side branches are both plane joints.
The top end of the lateral branch is provided with a membrane dividing line.
The top ends of the main branches and the top ends of the side branches are both structures with inner wall inclined planes, and the upper and lower cavities of the main branches and the side branches are cylindrical surfaces with different diameters.
The rubber plug A and the rubber plug B are the same rubber plug.
The invention has the beneficial effects that: the invention mainly aims at overcoming and solving the defects of the existing safety needle by improving the three-way structure of the disposable venous indwelling needle. The invention adjusts the taper of the top ends of the main branch and the lateral branch of the tee joint to adjust the original cylindrical structure to have an inner wall inclined plane structure, reduces the internal stress of the top end of the tee joint during transfusion, reduces the cracking and leakage probability of the clinical transfusion tee joint, can be adapted to various national standard transfusion joints, adjusts the main branch and the lateral branch to be transfusion joints needing to be connected with needle-free joints, really realizes needle-free transfusion, reduces the clinical acupuncture risk, avoids occupational exposure, adds the function of anti-reflux to the lateral branch, realizes double protection in the aspect of safe transfusion retention, adopts a plane structure at the top ends of the main branch and the lateral branch, is clinically easy to disinfect, reduces the surface risk of the joint with bacteria residue, realizes safe transfusion and aseptic transfusion.
Drawings
Fig. 1 is a schematic structural view of a needleless positive pressure type indwelling needle of the present invention.
Fig. 2 is a structural schematic diagram of a needle-free positive pressure joint of the needle-free positive pressure type indwelling needle of the invention.
Fig. 3 is a top view of a needle-free positive pressure connector of a needle-free positive pressure type indwelling needle according to the present invention.
Fig. 4 is a sectional view taken along line a-a of a needle-free positive pressure connector of a needle-free positive pressure type indwelling needle according to the present invention.
In the figure: 1. the rubber plug comprises a main branch top end 2, a piston 3, a base 4, a rubber plug A5, a spring 6, a valve shell 7, a side branch top end 8, a rubber plug seat 9, a rubber plug B10 and a sealing ring.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-4, needle is kept somewhere to needleless positive pressure type, it includes base 3, the upside of base 3 be provided with main branch top 1, the downside of main branch top 1 be provided with plug B9, the downside of plug B9 be provided with piston 2, the left side both sides of piston 2 all be provided with sealing washer 10, the right side middle part of base 3 be connected with valve casing 6, the top of valve casing 6 be provided with side branch top 7, the downside of side branch top 7 be provided with plug seat 8, the downside of plug seat 8 be provided with spring 5, the left and right sides of spring 5 all be provided with plug a 4.
When the infusion set connector and the injector push down the rubber plug B9 during infusion, the piston 2 moves downwards to cause the spring to deform, the spring provides a reaction force for the rubber plug B9 to cause the rubber plug B9 to elastically deform, the right side surface of the rubber plug B9 inclines downwards, so that the infusion set connector, the head end of the injector and the surface of the rubber plug B9 form a wedge-shaped channel, and liquid medicine flows to the infusion direction through the outer side of the base 3 to form an infusion channel. When the transfusion is finished, the transfusion device connector. The back is withdrawn from to the syringe joint, and the spring resumes deformation, promotes piston 2 and shifts up, and sealing washer 10 shifts up simultaneously, extrudes sealing washer 10 top liquid, and plug B9 resumes deformation simultaneously, and 1 passageway in shutoff bough top causes sealing washer 10 top liquid to move down along the 3 outer walls of base, along 3 below passageways flow direction infusion directions of base, forms the malleation.
Example 2
As shown in fig. 1-4, the needle-free positive pressure type indwelling needle comprises a base 3, the upper side of the base 3 is provided with a main branch top end 1, a rubber plug B9 is arranged on the lower side of the top end 1 of the main branch, a piston 2 is arranged on the lower side of the rubber plug B9, the two sides of the left side of the piston 2 are both provided with a sealing ring 10, the middle part of the right side of the base 3 is connected with a valve shell 6, the top end of the valve casing 6 is provided with a side branch top end 7, the lower side of the side branch top end 7 is provided with a rubber plug seat 8, a spring 5 is arranged at the lower side of the rubber plug seat 8, rubber plugs A4 are arranged at the left side and the right side of the spring 5, the top ends 1 and 7 of the main branches and the side branches are both plane joints, the top end of the top end 7 of the side branch is provided with a parting film line, the top ends 1 and 7 of the main branches and the side branches are both structures with inner wall inclined planes, and the upper and lower cavities of the main branches and the side branches are cylindrical surfaces with different diameters.
When the infusion set is implemented, if medicine is added in the infusion period, the connector of the infusion set and the injector press down the top end 7 of the side branch, so that the rubber plug A4 is deformed and moves downwards, the spring 5 pushes the rubber plug seat 8 to prevent deformation, and the separation membrane line automatically opens to form an infusion channel with the rubber plug A4 due to the extrusion of the picture 2, so that infusion is performed. When the transfusion is finished, the connector of the transfusion device and the injector retreat, the rubber plug A4 and the spring 5 rapidly recover the deformation, the spring 5 is made of stainless steel material, the elastic force is larger than the rubber plug A4 capsule material, so the time required for recovering the original state is short, the rubber plug seat 8 is rapidly extruded, the separation membrane line is closed, the blood is prevented from flowing backwards through the tee joint, and the better anti-reflux effect is achieved.
During transfusion, the rubber plug B9 and the rubber plug A4 are made of silica gel, and the top ends 1 and 7 of the main branches and the side branches are made of plastic, so that the silica gel can be slightly deformed, and the positive pressure joint can be designed to have 6:100 taper. The upper cavity and the lower cavity of the top ends 1 and 7 of the main branches are not cylindrical surfaces with equal diameters to form inclined planes with a certain angle, so that the problem that the top ends 1 and 7 of the main branches crack to cause clinical liquid leakage due to overlarge thrust of an infusion joint and an injector during infusion is solved.
Claims (4)
1. The utility model provides a needle is kept somewhere to needleless positive pressure type, it includes the base, its characterized in that: the upper side of the base is provided with a main branch top end, the lower side of the main branch top end is provided with a rubber plug B, the lower side of the rubber plug B is provided with a piston, the left side and the right side of the piston are both provided with sealing rings, and a main branch spring is arranged below the piston; the middle part of the right side of the base is connected with a valve casing, the top end of the valve casing is provided with a lateral branch top end, the lower side of the lateral branch top end is provided with a rubber plug seat, the lower side of the rubber plug seat is provided with a lateral branch spring, a rubber plug A is arranged inside the lateral branch spring, and the top end of the lateral branch top end is provided with a cutting film line; the rubber plug B and the rubber plug A are made of silica gel, and the top ends of the main branches and the top ends of the side branches are made of plastic; when the infusion apparatus joint and the injector push down the rubber plug B during infusion, the piston moves downwards, the main branch spring deforms to provide a reaction force for the rubber plug B, the rubber plug B generates elastic deformation, the right side surface of the rubber plug B inclines downwards, so that a wedge-shaped channel is formed by the infusion apparatus joint, the injector head end and the rubber plug B surface, and the liquid medicine flows to the infusion direction through the outer side of the base; when the connector of the infusion apparatus and the injector press the top end of the side branch, the rubber plug A deforms and moves downwards, the side branch spring pushes the rubber plug seat to prevent deformation, the cutting film line automatically opens to form an infusion channel with the rubber plug A for infusion, and when the connector of the infusion apparatus and the injector retreat, the rubber plug A and the side branch spring quickly recover from deformation.
2. The needle-free positive pressure type indwelling needle according to claim 1, wherein: the top ends of the main branches and the top ends of the side branches are both plane joints.
3. The needle-free positive pressure type indwelling needle according to claim 1, wherein: the top ends of the main branches and the top ends of the side branches are both structures with inner wall inclined planes, the upper cavities and the lower cavities of the main branches and the side branches are cylindrical surfaces with different diameters, and the springs are made of stainless steel.
4. A needle-free positive pressure type indwelling needle according to claim 1 or 3, wherein: the rubber plug A and the rubber plug B are the same rubber plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610508426.7A CN105999470B (en) | 2016-07-02 | 2016-07-02 | Needle-free positive pressure type remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610508426.7A CN105999470B (en) | 2016-07-02 | 2016-07-02 | Needle-free positive pressure type remaining needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105999470A CN105999470A (en) | 2016-10-12 |
| CN105999470B true CN105999470B (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610508426.7A Active CN105999470B (en) | 2016-07-02 | 2016-07-02 | Needle-free positive pressure type remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105999470B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201223593Y (en) * | 2008-07-18 | 2009-04-22 | 上海双鸽实业有限公司 | Disposable non-needle medicine-adding triplet |
| CN201643153U (en) * | 2010-03-31 | 2010-11-24 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless medicine-feeding joint |
| CN101879339B (en) * | 2010-07-12 | 2011-10-12 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN202010359U (en) * | 2010-09-05 | 2011-10-19 | 张国 | Double safety indwelling needle |
| CN202751639U (en) * | 2012-06-08 | 2013-02-27 | 苏州林华医疗器械有限公司 | Positive-pressure and pin-free connection piece |
| CN202982924U (en) * | 2012-11-08 | 2013-06-12 | 苏州市雅思精密模具有限公司 | Needleless connecting assembly |
-
2016
- 2016-07-02 CN CN201610508426.7A patent/CN105999470B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105999470A (en) | 2016-10-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20161012 Assignee: HENAN TUOREN MEDICAL DEVICE Co.,Ltd. Assignor: HENAN TUOREN BEISITE MEDICAL DEVICES Co.,Ltd. Contract record no.: X2021980003432 Denomination of invention: A needle free positive pressure indwelling needle Granted publication date: 20200214 License type: Common License Record date: 20210510 |