CN109045390A - Positive pressure needle-free infusion connector - Google Patents
Positive pressure needle-free infusion connector Download PDFInfo
- Publication number
- CN109045390A CN109045390A CN201811003243.5A CN201811003243A CN109045390A CN 109045390 A CN109045390 A CN 109045390A CN 201811003243 A CN201811003243 A CN 201811003243A CN 109045390 A CN109045390 A CN 109045390A
- Authority
- CN
- China
- Prior art keywords
- base portion
- lower base
- sealing element
- positive pressure
- upper neck
- 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.)
- Withdrawn
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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
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
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- 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)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention belongs to infusion apparatus fields, more particularly to a kind of positive pressure needle-free infusion connector, including joint housing and elastic sealing element, there is medical fluid runner, the gas passage communicated with the outside world in the lower bottom base of joint housing, there is retractable gap at the top of the upper neck of elastic sealing element, its side has wing passage, and the outer diameter of the lower base portion of elastic sealing element is greater than upper neck, and lower end is fixed in joint housing；Setting sealing limited step on upper outer casing inner wall；The side wall runner communicated with the medical fluid runner of lower bottom base is provided on upper shell；It is fixed in upper neck folding body (upper neck and lower base portion inner cavity is completely isolated), there is inner supporting body in lower base portion inner cavity, the height of inner supporting body is less than the cavity heights of lower base portion.The present invention is able to maintain that positive pressure or micro-positive pressure in use, prevents blood backflow；Under inner supporting body effect, lower base portion meeting generation rule deformation to form liquid rule channel, makes in flushing process without dead angle.
Description
Technical field
The present invention relates to a kind of positive pressure needle-free infusion connectors, belong to infusion apparatus field.
Background technique
Venous transfusion would generally be used in treatment clinical course, currently, because no-needle transfusion connector can be to avoid using syringe needle
It punctures repeatedly, therefore has and reduce patient suffering and avoid advantage of the medical staff by needlestick injuries, through being answered extensively
During venous transfusion.
But in existing no-needle transfusion connector easily there is gap in the docking location of inner seal liner and shell, therefore sealing performance is deposited
It is being short of, will lead to bacterium disinfection and be not thorough；Simultaneously in infusion process, the sealing element inside infusion connector is under squeezing action
In irregular deformation, so that (such as Bei Lang, Kang Erfusheng, sky are bright in irregular runner for the infusion channel inside infusion connector
The infusion connector of company's production), it will lead to Dead Core Problems when in use, cause washing pipe unclean, not exclusively, residual blood rushes for exhaust
It does not wash clean, therefore after blood product transfusion, needs replacing, Reusability can not be carried out.
Summary of the invention
The technical problem to be solved by the present invention is overcome deficiency in the prior art, providing can in a kind of use process
It maintains positive pressure or micro-positive pressure, prevent the positive pressure without dead angle in blood backflow and internal fluid passages rule, guarantee flushing process
No-needle transfusion connector.
Positive pressure needle-free infusion connector of the present invention, including joint housing and elastic sealing element, joint housing is by upper outer
Shell and lower bottom base are formed by connecting, and have medical fluid runner, the gas passage communicated with the outside world in lower bottom base, elastic sealing element is by elasticity
Material is made and is located in joint housing, and elastic sealing element is hollow cylinder, is formed by upper neck and lower base portion integrally connected,
There is openable and closable gap, side has wing passage, and the outer diameter of lower base portion is greater than upper neck, and lower end is fixed at the top of upper neck
In joint housing；The crossover position of neck and lower base portion in correspondence, the setting sealing limited step on upper outer casing inner wall；It is upper outer
It is located on the inner wall below sealing limited step on shell and is provided with the side wall runner communicated with the medical fluid runner of lower bottom base；Upper neck
Folding body is fixed in lower lumen, by upper folding body by upper neck and lower base portion inner cavity completely isolated, lower base portion inner cavity
In there is inner supporting body, the height of inner supporting body is less than the cavity heights of lower base portion；Gap under original state, at the top of upper neck
The crossover position of neck and lower base portion pushes against sealing limited step on closed state, elastic sealing element；When external force is from top
When acting on elastic sealing element, the gap is opened, and elastic sealing element is separated with sealing limited step.
The working principle of the invention process is as follows:
When clinical transfusion, syringe or other outer circle taper joints are inserted into positive pressure needle-free infusion connector above upper shell.
Just start, the upper end position of upper neck moves down in elastic sealing element, under the position-limiting action that body is opened and closed on inside, in the middle part of upper neck
Bending occurs outward, at the top of gap open, medical fluid through gap enter upper neck inner cavity, and the wing passage through upper neck into
Enter in the cavity between upper neck and upper shell；Later, with the insertion of syringe or other outer circle taper joints, elastic sealing element
Lower base portion pushed in the inside support limit effect of inner supporting body and contract regular deformation occurs, compress to a certain extent by interior branch
Support body blocks, and the inner cavity dischargeable capacity of lower base portion gradually becomes smaller until constant, makes the medical fluid flow velocity of input keep stablizing, lower base portion
Gas in inner cavity is discharged along the gas passage of lower bottom base, at the same time, the crossover position of upper neck and lower base portion gradually with it is close
Limited step separation is sealed, medical fluid enters the side wall runner of upper shell simultaneously through the gap between elastic sealing element and sealing limited step
Entered in perfusion tube by the medical fluid runner in lower bottom base.
After the completion of infusion, syringe or other outer circle taper joints are separated with infusion connector, at this point, acting on bullet from top
Property sealing element external force eliminate, the upper neck of elastic sealing element rises under own resilient effect, resets with base portion at present, under making
The inner cavity dischargeable capacity of base portion becomes larger until setting back.During this, positive pressure is remained in infusion connector, so as to
Enough prevent blood backflow, it is ensured that the safety used.
Except above-mentioned points, the lower base portion of elastic sealing element is realized under the inside support limit effect of inner supporting body in the present invention
Rule deformation, it is irregular to solve the problems, such as that traditional elastic sealing element deforms, and form liquid rule channel, nothing in flushing process
Dead angle, exhaust completely, will not have blood residuals after inputting blood product, can Reusability for same patient.
Preferably, upper neck periphery has bulge loop, and the position of bulge loop is higher than the wing passage of upper neck, and corresponding bulge loop is upper outer
Step is set on shell inner wall as sealing locating part.
Preferably, the lower end periphery of lower base portion has circular base in elastic sealing element, and upper shell is under in joint housing
The rigging position of pedestal forms the annular groove to match with circular base, and circular base is stuck in annular groove, realizes elasticity
Lower base portion lower end and joint housing are fixedly connected in sealing element, while upper shell and lower bottom base has been effectively ensured in joint housing
The sealing effect of rigging position.
In the present invention, the wing passage of upper neck side can be designed as normally opened channel, may be designed in retractable channel.
When the wing passage is retractable channel, in the initial state (when i.e. without external force), wing passage is in closed state, works as external force
When acting on upper neck from top, wing passage is opened, and compared with normally opened channel, the screen resilience of upper neck is big, more holds for this design
It easily realizes and resets.
Preferably, the lower part of upper folding body has seal receptacle, and the upper surface of seal receptacle is contacted with the inner top of lower base portion,
On corresponding contact position, lower base portion is equipped with downwardly projecting lip ring, sealing is realized, thus by upper neck and lower base
Portion inner cavity is completely isolated, keeps disinfection more thorough.It is further preferred that lip ring and lower base portion are using integrated molding.?
When practical application, the sealing of seal receptacle and lower base in contact face can also be realized using other modes, such as in the upper of seal receptacle
Outer bulge loop is designed on surface, and the outer bulge loop of correspondence is set on lower base portion to seal groove, and when assembly makes outer bulge loop be stuck in seal groove just
In, it equally can also reach sealing effect, it is finally that upper neck and lower base portion inner cavity is completely isolated.
Preferably, the outer shape of the crossover position of upper neck and lower base portion is taper, the corresponding crossover position, upper shell
Sealing limited step chamfering on inner wall makes to realize that face connects between the crossover position of neck and lower base portion and sealing limited step
Touching sealing, to enhance sealing effect.
Inner supporting body in the present invention can be fixedly connected with upper folding body, after fixed, between inner supporting body and lower bottom base
With adjustment gap, it is ensured that when external force acts on elastic sealing element from top, inner supporting body is moved down, from inside to elastic sealing element
Lower base portion be supported limit, to reduce the deformation of lower base portion, form liquid rule channel.Inner supporting body can also be with bottom
Seat is fixedly connected, and makes have adjustment gap between inner supporting body and the inner top of lower base portion, when there is external force to act on from top
When elastic sealing element, still the lower base portion to elastic sealing element from inside is supported limit to inner supporting body, reduces lower base portion
Deformation.
Preferably, when eliminating from the external force that top acts on elastic sealing element, the lower base portion inner cavity of elastic sealing element has
Effect volume variable quantity is 0-15 μ L, i.e., keeps positive pressure or micro-positive pressure in no-needle transfusion connector, effectively prevent blood backflow.
Preferably, elastic sealing element uses silica gel material.
Compared with the prior art, the invention has the beneficial effects that:
1, the present invention controls the volume of lower base portion inner cavity by the elasticity and inner supporting body of elastic sealing element, is being infused
Cheng Zhong, lower base portion cavity volume gradually become smaller until constant, and the medical fluid flow velocity of input is made to keep stablizing, after infusion, lower base
Portion's cavity volume becomes larger until setting back, and infusion connector is interior to keep positive pressure or micro-positive pressure, so that blood be effectively prevent to return
Stream, it is ensured that the safety used；
2, the folding of the invention using folding body control top gap, when syringe or other outer circle taper joints are slotting from top
When entering infusion connector, medical fluid first passes through the upper neck inner cavity of elastic sealing element, the wing passage again through upper neck enters elastic packing
In cavity between part and upper shell, deflection is small and exhaust is complete, solves present in traditional needle-free infusion connector because of medicine
Liquid directly sidled outside elastic component brought by elastic component deflection is big, more than bubble and is not easy the problem of being discharged；
3, under the action of inner supporting body, the lower base portion meeting generation rule deformation of elastic sealing element, to form liquid rule
Then channel makes will not there are problems that blood residuals after inputting blood product without dead angle in flushing process, can for same patient
Reusability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment one in the initial state；
Fig. 2 is structural schematic diagram of the embodiment one under venous transfusion state；
Fig. 3 is the sectional view after Fig. 1 is rotated by 90 °；
Fig. 4 is the structural schematic diagram of elastic sealing element；
Fig. 5 is the structural schematic diagram of lower bottom base in embodiment one；
Fig. 6 is the sectional view after Fig. 5 is rotated by 90 °；
Fig. 7 is the structural schematic diagram of embodiment two in the initial state；
Fig. 8 is the structural schematic diagram of lower bottom base in embodiment two.
In figure: 1, lower bottom base；2, medical fluid runner；3, circular base；4, side wall runner；5, inner supporting body；6, lower base portion；7,
Crossover position；8, upper folding body；9, upper neck；10, upper shell；11, gap；12, wing passage；13, fixing assembling platform；14, ring
Shape sealing element；15, seal receptacle；16, outer circle taper joint；17, bulge loop；18, gas passage.
Specific embodiment
The embodiment of the present invention is described further with reference to the accompanying drawing:
Embodiment one:
As shown in figs. 1 to 6, positive pressure needle-free infusion connector described in the present embodiment includes joint housing and elastic sealing element, is connect
Casing is formed by connecting by upper shell 10 and lower bottom base 1, has medical fluid runner 2, the gas passage communicated with the outside world in lower bottom base 1
18, elastic sealing element is made of elastic material and is located in joint housing, and elastic sealing element is hollow cylinder made of silica gel material
Body is formed by upper neck 9 and lower 6 integrally connected of base portion, has openable and closable gap 11 at the top of upper neck 9, side has
The outer diameter of wing passage 12, lower base portion 6 is greater than upper neck 9, and lower end is fixed in joint housing；Neck 9 and lower base portion 6 in correspondence
Crossover position 7, on upper 10 inner wall of shell setting sealing limited step (under original state, on elastic sealing element neck 9 under
The crossover position 7 of base portion 6 pushes against the sealing limited step, when external force acts on elastic sealing element from top, elastic sealing element
Gradually separated with sealing limited step, wing passage 12 of the medical fluid through upper neck 9, upper shell 10 side wall runner 4 and pass through bottom
Medical fluid runner 2 in seat 1 enters in perfusion tube)；It is located on the inner wall below sealing limited step on upper shell 10 and is provided with under
The side wall runner 4 that the medical fluid runner 2 of pedestal 1 communicates；It is fixed with folding body 8 in the lower lumen of upper neck 9, passes through upper folding
Body 8 is completely isolated by upper neck 9 and lower 6 inner cavity of base portion, and in the present embodiment, fixing assembling platform is arranged on the inner wall of upper neck 9
13, and fixture block or snap ring is arranged in corresponding fixing assembling platform 13 on upper 8 outer wall of folding body, is realized and is opened and closed by snap fit
Body 8 is fixedly connected with upper neck 9；There is inner supporting body 5, the height of inner supporting body 5 is less than lower base portion 6 in lower 6 inner cavity of base portion
Cavity heights；Under original state, the gap 11 at upper 9 top of neck is in closed state, when external force acts on elasticity from top
When sealing element, the gap 11 is opened.
In the present embodiment:
Upper 9 periphery of neck has bulge loop 17, and the position of bulge loop 17 is higher than the wing passage 12 of upper neck 9, and corresponding bulge loop 17 exists
Step is set on upper 10 inner wall of shell as sealing locating part.
The wing passage 12 of upper 9 side of neck is retractable channel (may be designed in normally opened channel), in this way, in initial shape
Under state (when i.e. without external force), wing passage 12 is in closed state, when external force acts on upper neck 9 from top, wing passage
12 open, and compared with normally opened channel, the screen resilience of upper neck 9 is big for this design, it is easier to realize and reset, sealing effect is also opposite
Preferably.
The outer shape of upper neck 9 and the crossover position 7 of lower base portion 6 is taper, the corresponding crossover position 7, upper shell 10
Sealing limited step chamfering on inner wall makes to realize between the crossover position 7 of neck 9 and lower base portion 6 and sealing limited step
Face contact sealing, to enhance sealing effect.
The lower part of upper folding body 8 has seal receptacle 15, and the upper surface of seal receptacle 15 is contacted with the inner top of lower base portion 6,
On corresponding contact position, lower base portion 6 is equipped with downwardly projecting lip ring 14, realizes sealing, thus by upper neck 9 with
Lower 6 inner cavity of base portion is completely isolated, keeps disinfection more thorough, in the present embodiment, lip ring 14 and lower base portion 6 using one at
Type.
The seal receptacle 15 of inner supporting body 5 in the present embodiment and upper folding body 8 using be integrally formed (i.e. inner supporting body 5 with
Upper folding body 8 is fixedly connected), there is adjustment gap, it is ensured that external force is made from top after fixed, between inner supporting body 5 and lower bottom base 1
When for elastic sealing element, inner supporting body 5 is moved down, and from inside, the lower base portion 6 to elastic sealing element is supported limit, to reduce
The deformation of lower base portion 6 forms liquid rule channel.
The lower end periphery of lower base portion 6 has circular base 3, upper shell 10 and lower bottom base in joint housing in elastic sealing element
1 rigging position forms the annular groove to match with circular base 3, and circular base 3 is stuck in annular groove, realizes that elasticity is close
Lower 6 lower end of base portion and joint housing are fixedly connected in sealing, while upper shell 10 and bottom has been effectively ensured in joint housing
The sealing effect of 1 rigging position of seat.
When the external force for acting on elastic sealing element from top is eliminated, the dischargeable capacity of 6 inner cavity of lower base portion of elastic sealing element
Variable quantity is 0-15 μ L, i.e., keeps positive pressure or micro-positive pressure in no-needle transfusion connector, effectively prevent blood backflow.
The working principle process of the present embodiment is as follows:
When clinical transfusion, syringe or other outer circle taper joints 16 are inserted into positive pressure needle-free infusion above upper shell 10 and connect
Head.Just starting, the upper end position of upper neck 9 moves down in elastic sealing element, under the position-limiting action that body 8 is opened and closed on inside, upper neck
Bending occurs outward for the middle part of portion 9, at the top of gap 11 open, medical fluid enters upper 9 inner cavity of neck through gap 11, and through upper neck
The wing passage 12 in portion 9 enters in the cavity between upper neck 9 and upper shell 10；Later, with syringe or other outer circle tapered joints
First 16 insertion, the lower base portion 6 of elastic sealing element pushes to contract in the inside support limit effect of inner supporting body 5 occurs regular change
Shape, the gas in lower 6 inner cavity of base portion are discharged along the gas passage 18 of lower bottom base 1, and the inner cavity dischargeable capacity of lower base portion 6 gradually becomes smaller
Until constant, the medical fluid flow velocity of input is made to keep stablizing, at the same time, the crossover position 7 of upper neck 9 and lower base portion 6 gradually with
Limited step separation is sealed, medical fluid enters the side wall of upper shell 10 through the gap 11 between elastic sealing element and sealing limited step
Runner 4 is simultaneously entered in perfusion tube by the medical fluid runner 2 in lower bottom base 1.
After the completion of infusion, syringe or other outer circle taper joints 16 are separated with positive pressure needle-free infusion connector, at this point, from upper
The external force that side acts on elastic sealing element is eliminated, and the upper neck 9 of elastic sealing element rises under own resilient effect, with base at present
Portion 6 resets, and becomes larger the inner cavity dischargeable capacity of lower base portion 6 until setting back.During this, protected always in infusion connector
Positive pressure is held, so as to prevent blood backflow, it is ensured that the safety used.
Except above-mentioned points, in the present embodiment elastic sealing element lower base portion 6 inner supporting body 5 inside support limit effect under
Implementation rule deformation, it is irregular to solve the problems, such as that traditional elastic sealing element deforms, and form liquid rule channel, flushing process
Middle no dead angle, exhaust completely, will not have blood residuals after inputting blood product, same patient can be made repeatedly
With.
Embodiment two:
As shown in Fig. 7~8, the structure of positive pressure needle-free infusion connector described in the present embodiment is basically the same as the first embodiment, no
It is that inner supporting body 5 is (using integrated molding both in the present embodiment) being fixed on lower bottom base 1, inner supporting body 5 with place
There is adjustment gap, when there is external force to act on elastic sealing element from top, inner supporting body 5 between the inner top of lower base portion 6
Still from inside, the lower base portion 6 to elastic sealing element is supported limit, reduces the deformation of lower base portion 6.
The working principle process of this positive pressure needle-free infusion connector described in embodiment two is the same as example 1.
Claims (10)
1. a kind of positive pressure needle-free infusion connector, including joint housing and elastic sealing element, joint housing by upper shell (10) and under
Pedestal (1) is formed by connecting, and has medical fluid runner (2), the gas passage (18) communicated with the outside world, elastic packing in lower bottom base (1)
Part is made of elastic material and is located in joint housing, it is characterised in that: elastic sealing element is hollow cylinder, by upper neck
(9) it is formed with lower base portion (6) integrally connected, there are openable and closable gap (11) at the top of upper neck (9), side has wing passage
(12), the outer diameter of lower base portion (6) is greater than upper neck (9), and lower end is fixed in joint housing；Neck (9) and lower base in correspondence
The crossover position (7) in portion (6), the setting sealing limited step on upper shell (10) inner wall；It is located at sealing limit on upper shell (10)
The side wall runner (4) communicated with the medical fluid runner (2) of lower bottom base (1) is provided on inner wall below the step of position；Under upper neck (9)
Folding body (8) is fixed in portion inner cavity, it is by upper folding body (8) that upper neck (9) and lower base portion (6) inner cavity is completely isolated,
There are inner supporting body (5) in lower base portion (6) inner cavity, the height of inner supporting body (5) is less than the cavity heights of lower base portion (6)；
Under original state, the gap (11) at the top of upper neck (9) is in closed state, and the upper neck (9) of elastic sealing element is under
The crossover position (7) of base portion (6) pushes against sealing limited step；
When external force acts on elastic sealing element from top, the gap (11) is opened, elastic sealing element and sealing limited step
Separation.
2. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: upper neck (9) periphery has bulge loop
(17), the position of bulge loop (17) is higher than the wing passage (12) of upper neck (9), and corresponding bulge loop (17) are set on upper shell (10) inner wall
Step is set as sealing locating part.
3. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: in elastic sealing element lower base portion (6)
Lower end periphery has circular base (3), and the rigging position of upper shell (10) and lower bottom base (1) is formed and annular base in joint housing
The annular groove that seat (3) matches, circular base (3) are stuck in annular groove, realize lower base portion (6) lower end in elastic sealing element
With being fixedly connected for joint housing.
4. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: the wing passage of upper neck (9) side
It (12) is normally opened channel.
5. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: the wing passage of upper neck (9) side
It (12) is retractable channel；Under original state, wing passage (12) is in closed state；When external force acts on upper neck from top
(9) when, wing passage (12) is opened.
6. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: above open and close the lower part of body (8) with close
It seals seat (15), the upper surface of seal receptacle (15) is contacted with the inner top of lower base portion (6), on corresponding contact position, lower base portion
(6) it is equipped with downwardly projecting lip ring (14).
7. positive pressure needle-free infusion connector according to claim 1, it is characterised in that: the mistake of upper neck (9) and lower base portion (6)
The outer shape for crossing position (7) is taper, the corresponding crossover position (7), and the sealing limited step on upper shell (10) inner wall falls
Angle.
8. any positive pressure needle-free infusion connector according to claim 1~7, it is characterised in that: inner supporting body (5) with it is upper
Folding body (8) is fixedly connected, and has adjustment gap between inner supporting body (5) and lower bottom base (1).
9. any positive pressure needle-free infusion connector according to claim 1~7, it is characterised in that: inner supporting body (5) is under
Pedestal (1) is fixedly connected, and has adjustment gap between inner supporting body (5) and the inner top of lower base portion (6).
10. any positive pressure needle-free infusion connector according to claim 1~7, it is characterised in that: act on bullet from top
Property sealing element external force when eliminating, the dischargeable capacity variable quantity of lower base portion (6) inner cavity of elastic sealing element is 0-15 μ L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003243.5A CN109045390A (en) | 2018-08-30 | 2018-08-30 | Positive pressure needle-free infusion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003243.5A CN109045390A (en) | 2018-08-30 | 2018-08-30 | Positive pressure needle-free infusion connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109045390A true CN109045390A (en) | 2018-12-21 |
Family
ID=64757919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003243.5A Withdrawn CN109045390A (en) | 2018-08-30 | 2018-08-30 | Positive pressure needle-free infusion connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109045390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585564A (en) * | 2023-07-17 | 2023-08-15 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
-
2018
- 2018-08-30 CN CN201811003243.5A patent/CN109045390A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585564A (en) * | 2023-07-17 | 2023-08-15 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
| CN116585564B (en) * | 2023-07-17 | 2023-09-19 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
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| PB01 | Publication | ||
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Application publication date: 20181221 |