CN105963824A - Rotary type needle-free connector keeping positive pressure constantly - Google Patents
Rotary type needle-free connector keeping positive pressure constantly Download PDFInfo
- Publication number
- CN105963824A CN105963824A CN201610484040.7A CN201610484040A CN105963824A CN 105963824 A CN105963824 A CN 105963824A CN 201610484040 A CN201610484040 A CN 201610484040A CN 105963824 A CN105963824 A CN 105963824A
- Authority
- CN
- China
- Prior art keywords
- piston
- sealing
- positive pressure
- continuous positive
- straight pipe
- 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.)
- Pending
Links
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
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
-
- 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
- A61M2005/1401—Functional features
- A61M2005/1404—Keep vein-open rate [KVO], i.e. low flow rate
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (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 relates to the technical field of transfusion equipment, in particular to a rotary type needle-free connector keeping positive pressure constantly. The rotary type needle-free connector keeping positive pressure constantly comprises a straight-through pipe and a sealing piston, wherein the sealing piston is glidingly arranged in the straight-through pipe. The rotary type needle-free connector further comprises a piston pushing body used for pushing the sealing piston in a reciprocating manner, the sealing piston is mounted at one end of the piston pushing body, a curved sliding chute is formed in the cylindrical surface of the piston pushing body, and a bulge matched with the curved sliding chute is arranged on the inner wall of the straight-through pipe; a transfusion channel is formed in the middle of the piston pushing body. According to the rotary-type needle-free connector keeping positive pressure constantly, when the piston pushing body is rotated, the bulge slides along the curved sliding chute and pushes the piston pushing body to move axially, and accordingly, the sealing piston is driven to move; a funnel part is arranged at one end of the straight-through pipe, when the sealing piston abuts against the funnel part of the straight-through pipe, the straight-through pipe is blocked, a sealing function is realized, and accordingly, constant positive pressure is realized.
Description
Technical field
The present invention relates to fluid delivery apparatus technical field, particularly relate to a kind of rotary continuous positive pressure needleless joint.
Background technology
When patient needs continuous several times to infuse, it will usually use remaining needle, the general joint using syringe to connect with remaining needle
Connect, but when infusion-completed pulls up the joint of syringe, owing to the effect of negative pressure can make blood be back in remaining needle, do not flow
Blood easily solidify, blood coagulation can cause the blocking of remaining needle, and next time, transfusion just cannot be carried out again.
It is therefore desirable to provide a kind of continuous positive pressure needleless joint, blood can be avoided to reflux.
Summary of the invention
Present invention aims to the deficiencies in the prior art and a kind of rotary continuous positive pressure needleless joint is provided, can be formed and hold
Continuous malleation, it is to avoid blood refluxes.
For achieving the above object, the one rotary continuous positive pressure needleless joint of the present invention, live including straight pipe and sealing
Plug, seals piston and is slideably positioned in the inside of straight pipe；Also include that the piston sealing piston for reciprocating promotes body, seal
Piston is installed on piston and promotes one end of body, and piston promotes the face of cylinder of body to be provided with curve chute, and the inwall of straight pipe is arranged
There is the projection coordinated with curve chute；Described piston promotes the middle part of body to be provided with infusion channel.
Preferably, also including that assembly, described straight pipe are provided with window, assembly is arranged at window, and projection is arranged at
Assembly.
Preferably, described assembly welds or glueds joint in window.
Preferably, also including the cap that is rotatably connected, the cap that is rotatably connected is articulated in one end of described straight pipe and leads with straight pipe
Logical.
Preferably, also include that one-way sealing valve body, one-way sealing valve body are arranged in described infusion channel and are positioned at piston
Promote the other end of body.
Preferably, the outer wall of described sealing piston is arranged at intervals with the first sealing ring portion, the second sealing ring axially along
Portion, the external diameter in the first sealing ring portion is more than the external diameter in the second sealing ring portion.
Preferably, described sealing piston is cup-shaped, seals piston bush and is connected to one end of piston promotion body.
Preferably, the inwall of described sealing piston is provided with inner seal ring portion, and piston promotes one end of body to be provided with annular groove,
Inner seal ring portion is embedded in annular groove.
Preferably, described sealing piston is silica gel sealing piston, and the shore hardness sealing piston is 48HA ~ 52 HA.
Preferably, the shore hardness of described sealing piston is 50HA.
Beneficial effects of the present invention: the one rotary continuous positive pressure needleless joint of the present invention, when rotating piston promotion body,
Protruding along curve chute slip, thus promote piston to promote body to move along its axis, thus band movable sealing piston moves, straight-through
One end of pipe is provided with infundibulum, seals piston and holds out against when the infundibulum of straight pipe, can make the conducting of blocking-up straight pipe, real
Existing sealing function, thus realize continuous positive pressure, it is to avoid blood refluxes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the sectional structure schematic diagram of the present invention.
Fig. 3 is that the piston of the present invention promotes body structural representation.
Fig. 4 is that the piston of the present invention promotes body longitudinal direction sectional structure schematic diagram.
Fig. 5 is projection and the perspective view of assembly of the present invention.
Fig. 6 is the sectional structure schematic diagram sealing piston of the present invention.
Fig. 7 is the sectional structure schematic diagram of the straight pipe of the present invention.
Reference includes:
1 straight pipe
11 protruding 12 assembly 13 windows
2 seal piston
21 first inner seal ring portion of sealing ring portion 23 of sealing ring portions 22 second
3 pistons promote body
31 curve chute 32 infusion channel 33 annular grooves
4 one-way sealing valve bodies 5 are rotatably connected cap
A cell wall and piston promote the angle between the axis of rotation of body.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Fig. 1 ~ 7, the one rotary continuous positive pressure needleless joint of the present invention, including straight pipe 1 and sealing piston
2, seal piston 2 and be slideably positioned in the inside of straight pipe 1；Also include that the piston sealing piston 2 for reciprocating promotes body 3,
Sealing piston 2 and be installed on one end of piston promotion body 3, piston promotes the face of cylinder of body 3 to be provided with curve chute 31, straight pipe 1
Inwall be provided with the projection 11 coordinated with curve chute 31；Described piston promotes the middle part of body 3 to be provided with infusion channel 32.Live
Plug promotes body 3 to be similar to cylindrical cam, and after completing transfusion, when rotating piston promotion body 3, protruding 11 slide along curve chute 31,
Thus promote piston to promote body 3 to move along its axis, thus band movable sealing piston 2 moves, one end of straight pipe 1 is provided with funnel
Portion, seals piston 2 and holds out against when the infundibulum of straight pipe 1, can make the conducting of blocking-up straight pipe 1, it is achieved sealing function, thus
Realize continuous positive pressure.
Concrete, the end of curve chute 31 can be provided with horizontal lock section, when protruding 11 are positioned at horizontal lock section
Time, the thrust formed along the blood pressure that piston promotion body 3 is axial cannot be pushed piston promotion body 3 open, thus realize lock function, keep away
Exempt from blood pressure and push sealing piston 2 open, improve sealing effectiveness.
Concrete, as shown in Figure 4, curve chute 31 is surrounded by bottom land and cell wall, promotes the vertical profile structure of body 3 to show at piston
In intention, cell wall and piston promote the angle a between the axis of rotation of body 3 to be 40 ° ~ 50 °, and concrete a can be 45 °.This
Bright one rotary continuous positive pressure needleless joint, projection 11 is slided smooth and easy when relatively sliding along curve chute 31.
Preferably, also including that assembly 12, described straight pipe 1 are provided with window 13, assembly 12 is arranged at window 13, convex
Play 11 and be arranged at assembly 12.Concrete, described assembly 12 welds or glueds joint in window 13.It is internally provided with the straight of projection 11
Siphunculus 1 cannot withdrawing pattern, the projection 11 of the present invention is arranged at assembly 12, straight pipe 1 and assembly 12 molding respectively, welds after molding
Connect, reduce production cost.
As it is shown in fig. 7, window 13 can be semi-transparent window, the outer wall of straight pipe 1 is provided with the groove of accommodating assembly 12, recessed
The bottom land of groove is provided with the through hole for wearing protruding 11.Assembly 12 is positioned over groove and then welds or glued joint, it is simple to assemble
Processing.
Preferably, also including the cap 5 that is rotatably connected, the cap 5 that is rotatably connected is articulated in one end and and the straight pipe of described straight pipe 1
1 conducting.The cap 5 that is rotatably connected of the present invention is easy to be connected with external infusion joint.
Preferably, also include one-way sealing valve body 4, one-way sealing valve body 4 be arranged at described infusion channel 32 in and be positioned at
Piston promotes the other end of body 3.One-way sealing valve body 4 realizes unidirectional opening, when outside tube for transfusion connects with one-way sealing valve body 4
When connecing, one-way sealing valve body 4 is opened, and when outside tube for transfusion departs from one-way sealing valve body 4, one-way sealing valve body 4 closes,
The one-way sealing valve body 4 of the present invention i.e. realizes sealing function, plays again the effect limiting liquid medicine flow direction.
As shown in Figure 6, the outer wall of described sealing piston 2 is arranged at intervals with the first sealing ring portion 21, second axially along
Sealing ring portion 22, the external diameter in the first sealing ring portion 21 is more than the external diameter in the second sealing ring portion 22.During assembling, seal piston 2 and enter
After straight pipe 1, all there is elastic deformation in the first sealing ring portion 21 and the second sealing ring portion 22, the first sealing ring portion 21 and second is close
The inwall of straight pipe 1 is all close in seal portion 22, meanwhile, seals and formed between the first sealing ring portion 21 and the second sealing ring portion 22
Having one section of air ring, air ring improves the sealing effectiveness sealing piston 2.
Preferably, described sealing piston 2 is cup-shaped, seals piston 2 and is socketed on one end of piston promotion body 3.The present invention's
Seal piston 2, good sealing effect.
Preferably, the inwall of described sealing piston 2 is provided with inner seal ring portion 23, and piston promotes one end of body 3 to be provided with
Annular groove 33, inner seal ring portion 23 is embedded in annular groove 33.Inner seal ring portion 23 improves sealing piston 2 and piston promotes between body 3
Sealing effectiveness, it is to avoid medicinal liquid is from sealing spilling between piston 2 and piston promotion body 3.Simultaneously, it is to avoid air pressure from seal piston 2 with
Piston promotes and reveals between body 3, improves sealing effectiveness, is beneficial to keep malleation.
Preferably, described sealing piston 2 is silica gel sealing piston, and the shore hardness sealing piston 2 is 48HA ~ 52 HA.Tool
Body, the shore hardness of described sealing piston 2 is 50HA.The hardness sealing piston 2 is the weight that impact seals piston 2 sealing property
Wanting factor, the sealing piston 2 of the present invention is effective with the inwall of straight pipe 1 laminating tight seal.
Understanding the present invention in sum is to have above-described good characteristic, is made it on using, promotes in the past
The usefulness that do not has in technology and there is practicality, become the product of a great practical value.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention's
Thought, the most all will change, and this specification content should not be construed as the present invention
Restriction.
Claims (10)
1. a rotary continuous positive pressure needleless joint, it is characterised in that: include straight pipe (1) and seal piston (2), sealing and live
Plug (2) is slideably positioned in the inside of straight pipe (1)；Also include that the piston sealing piston (2) for reciprocating promotes body (3),
Sealing piston (2) and be installed on one end of piston promotion body (3), piston promotes the face of cylinder of body (3) to be provided with curve chute (31),
The inwall of straight pipe (1) is provided with the projection (11) coordinated with curve chute (31)；Described piston promotes the middle part of body (3) to arrange
There is infusion channel (32).
One the most according to claim 1 rotary continuous positive pressure needleless joint, it is characterised in that: also include assembly
(12), described straight pipe (1) is provided with window (13), and assembly (12) is arranged at window (13), and protruding (11) are arranged at assembling
Body (12).
One the most according to claim 2 rotary continuous positive pressure needleless joint, it is characterised in that: described assembly (12)
Weld or glued joint in window (13).
One the most according to claim 1 rotary continuous positive pressure needleless joint, it is characterised in that: also include being rotatably connected
Cap (5), the cap that is rotatably connected (5) is articulated in one end of described straight pipe (1) and turns on straight pipe (1).
One the most according to claim 1 rotary continuous positive pressure needleless joint, it is characterised in that: also include one-way sealing
Valve body (4), one-way sealing valve body (4) is arranged in described infusion channel (32) and is positioned at piston and promotes the other end of body (3).
One the most according to claim 1 rotary continuous positive pressure needleless joint, it is characterised in that: described sealing piston
(2) outer wall is arranged at intervals with the first sealing ring portion (21), the second sealing ring portion (22), the first sealing ring portion axially along
(21) external diameter is more than the external diameter in the second sealing ring portion (22).
One the most according to claim 6 rotary continuous positive pressure needleless joint, it is characterised in that: described sealing piston
(2) cup-shaped, seal piston (2) and be socketed on one end of piston promotion body (3).
One the most according to claim 7 rotary continuous positive pressure needleless joint, it is characterised in that: described sealing piston
(2) inwall is provided with inner seal ring portion (23), and piston promotes one end of body (3) to be provided with annular groove (33), inner seal ring portion
(23) annular groove (33) it is embedded in.
9. according to the rotary continuous positive pressure needleless joint of the one described in any one in claim 1 ~ 8, it is characterised in that:
Described sealing piston (2) is silica gel sealing piston, and the shore hardness sealing piston (2) is 48HA ~ 52 HA.
One the most according to claim 9 rotary continuous positive pressure needleless joint, it is characterised in that: described sealing piston
(2) shore hardness is 50HA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484040.7A CN105963824A (en) | 2016-06-28 | 2016-06-28 | Rotary type needle-free connector keeping positive pressure constantly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484040.7A CN105963824A (en) | 2016-06-28 | 2016-06-28 | Rotary type needle-free connector keeping positive pressure constantly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105963824A true CN105963824A (en) | 2016-09-28 |
Family
ID=57020774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610484040.7A Pending CN105963824A (en) | 2016-06-28 | 2016-06-28 | Rotary type needle-free connector keeping positive pressure constantly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105963824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966593A (en) * | 2017-02-04 | 2019-07-05 | 王才丰 | The needleless injector of medicine can independently be taken |
| CN114082040A (en) * | 2021-10-12 | 2022-02-25 | 杭州美克恒辉实业有限公司 | Infusion needleless connector with positive pressure elastic valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69624982D1 (en) * | 1995-05-16 | 2003-01-09 | Alaris Medical Syst Inc | Needle-free connection valve, especially for handling and processing parental liquids |
| CN1879902A (en) * | 2006-02-22 | 2006-12-20 | 张亚平 | Needle-free closed transfusion adaptor |
| CN200960338Y (en) * | 2006-09-30 | 2007-10-17 | 林作钱 | Syringe rubber plug |
| CN201020092Y (en) * | 2007-02-09 | 2008-02-13 | 扬州市瑞京科技发展有限公司 | Transfusion joint |
| CN203342121U (en) * | 2013-05-27 | 2013-12-18 | 江西丰临医用器械有限公司 | Positive pressure connector |
| CN203989265U (en) * | 2014-06-27 | 2014-12-10 | 孙红才 | A kind of preventing thrombosis venous detaining needle |
| CN204411402U (en) * | 2015-01-12 | 2015-06-24 | 邱建芳 | A kind of sump assemblies of release pressure |
| US20160106970A1 (en) * | 2009-03-25 | 2016-04-21 | Icu Medical, Inc. | Medical connectors and methods of use |
-
2016
- 2016-06-28 CN CN201610484040.7A patent/CN105963824A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69624982D1 (en) * | 1995-05-16 | 2003-01-09 | Alaris Medical Syst Inc | Needle-free connection valve, especially for handling and processing parental liquids |
| CN1879902A (en) * | 2006-02-22 | 2006-12-20 | 张亚平 | Needle-free closed transfusion adaptor |
| CN200960338Y (en) * | 2006-09-30 | 2007-10-17 | 林作钱 | Syringe rubber plug |
| CN201020092Y (en) * | 2007-02-09 | 2008-02-13 | 扬州市瑞京科技发展有限公司 | Transfusion joint |
| US20160106970A1 (en) * | 2009-03-25 | 2016-04-21 | Icu Medical, Inc. | Medical connectors and methods of use |
| CN203342121U (en) * | 2013-05-27 | 2013-12-18 | 江西丰临医用器械有限公司 | Positive pressure connector |
| CN203989265U (en) * | 2014-06-27 | 2014-12-10 | 孙红才 | A kind of preventing thrombosis venous detaining needle |
| CN204411402U (en) * | 2015-01-12 | 2015-06-24 | 邱建芳 | A kind of sump assemblies of release pressure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966593A (en) * | 2017-02-04 | 2019-07-05 | 王才丰 | The needleless injector of medicine can independently be taken |
| CN114082040A (en) * | 2021-10-12 | 2022-02-25 | 杭州美克恒辉实业有限公司 | Infusion needleless connector with positive pressure elastic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |