CN105407942B - Annular groove positions the external transfusion catheter fluid stopping switch of formula - Google Patents
Annular groove positions the external transfusion catheter fluid stopping switch of formula Download PDFInfo
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- CN105407942B CN105407942B CN201380078540.5A CN201380078540A CN105407942B CN 105407942 B CN105407942 B CN 105407942B CN 201380078540 A CN201380078540 A CN 201380078540A CN 105407942 B CN105407942 B CN 105407942B
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- fitting body
- valve
- inner cavity
- annular groove
- connector pedestal
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
-
- 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
- A61M39/22—Valves or arrangement of valves
- A61M2039/226—Spindles or actuating means
-
- 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
- A61M39/22—Valves or arrangement of valves
- A61M2039/229—Stopcocks
-
- 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
- A61M25/00—Catheters; Hollow probes
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0097—Catheters; Hollow probes characterised by the hub
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
It is a kind of that medium is introduced into intracorporal device, especially a kind of external transfusion catheter fluid stopping switch of annular groove positioning formula, its composition is characterized by: including connector pedestal (3) and fitting body (2), connector pedestal (3) front end plugs into transfusion catheter (4) or plugs into the infusion component on infusion pipeline, fitting body rear end is plugged into transfusion catheter (4), and fitting body (2) leading portion is plugged in connector pedestal (3) inner cavity with scalable slip mode.Advantage is: preventing the mode of negative pressure and elimination negative pressure simple, effective, easy to operate.And the intervention of shut-off valve (7), infusion channel is ended again while eliminating negative pressure, not only relatively sanitary, safety, and fitting body (otherwise shut-off valve cut-off must be first stepped back when ensuring infusion again from structure, can not be infused) so that fitting body (2) has the space promoted to eliminate negative pressure after infusion.And the process shut off gradually as fitting body (2) promote, so that shut-off valve (7) also has the function of flow control valve.And the setting of annular groove (31) and protrusion (25) makes the fitting body (2) being advancing to the position be able to be not easy the actuating armature body (2) due to malfunction by effective position.
Description
Technical field
Medium is introduced into intracorporal device the present invention relates to a kind of, especially a kind of annular groove positioning external transfusion catheter of formula stops
Stream switch.
Background technique
When clinical treatment is infused, needs to cover a upper flow-stopping clip on transfusion catheter to switch as fluid stopping, have
Body illustrates visible attached drawing 1.When be infused end operation flow-stopping clip when, need the conduit at a hand grip flow-stopping clip both ends, the other hand lateral
Mobile flow-stopping clip makes the jaw clamp conduit of flow-stopping clip with fluid stopping.When operation, meeting that the conduit at flow-stopping clip both ends is difficult to avoid that because
It is hand-held and be oppressed, especially the conduit of flow-stopping clip front (close to the end of human body) by relieving after this hand-held compressing due to
Generate negative pressure, blood can flow backwards into conduit from blood vessel, cause blood clotting obstruction conduit, can not be infused again, it is serious can
Thrombus can be generated, is damaged to sufferer.For remedy such and insufficient, traditionally not Shang flow-stopping clip clamp conduit after, need
Flow-stopping clip is slided toward conduit tube component direction, conduit is enabled gradually to be extruded, drives refluence blood out of, but when flow-stopping clip and conduit clamping
Resistance to sliding is big, and drawing conduit easily pulls out conduit from jaw, causes bigger negative pressure, while also easily elongating conduit and becoming
Carefully, serious to break conduit and cause hemorrhage through multiple drawing, in addition conduit tube component indwelling is pasted on sufferer body, lead
Length of tube is limited, if drawing is careless, conduit tube component can be pulled out to sufferer body, in order to avoid the generation of above-mentioned accident, medical matters
Personnel operate when it is overcautious, the length of flow-stopping clip drawing sometimes is inadequate, still cannot be completely secured blood inside catheters are driven it is dry
Only.Therefore this mode of operation is cumbersome, all increases larger to medical staff's workload and psychological burden and fully effective cannot still disappear
Except negative pressure appearance.
Summary of the invention
The purpose of the present invention is to overcome the deficiency in the prior art place and provide one kind can eliminate effectively eliminate negative pressure and
The external transfusion catheter fluid stopping switch of easy to operate annular groove positioning formula.
The purpose of the present invention is what is realized by following approach.
Annular groove positions the external transfusion catheter fluid stopping switch of formula, and composition is characterized by: including connector pedestal and fitting body, being connect
Head pedestal front end plugs into transfusion catheter or plugs into the infusion component on infusion pipeline, and fitting body rear end is led with infusion
Pipe is plugged into, and fitting body leading portion is plugged in connector pedestal inner cavity with scalable slip mode, fitting body and connector pedestal inner cavity it
Between the space that is promoted with fitting body, it is circumferentially arranged in connector pedestal inner cavity to have a kind of annular groove, it is corresponding, in fitting body
It is provided with a kind of protrusion that is embeddable and exiting the annular groove on one Elastic plastic-rubber body, the fitting body being advancing to the position, this protrusion is proper
It is embedded in the annular groove, connector intracoelomic cavity is connected to by a kind of shut-off valve with connector pedestal inner cavity, this shut-off valve is arranged above-mentioned
Fitting body promotes the shutdown that shut-off valve is completed in space and through the fitting body being advancing to the position.
Connector pedestal inner cavity constitutes a hermetic type chamber in this way, changes hermetic type chamber using the advance and retreat that fitting body axially elapses and holds
Product size.Fitting body is stepped back, and hermetic type chamber increases；Fitting body promotes, and hermetic type chamber reduces, and is advancing to the position, infusion channel cut-off.
When infusion work, fitting body is first stepped back, and shut-off valve is opened, and hermetic type chamber increases, convenient for accommodating more liquid；Infusion terminates needle tubing
It exits simultaneously, fitting body promotes, and hermetic type chamber from large to small, to fill up the space for generating negative pressure, prevents negative pressure or discharge
Blood inside catheters enter blood vessel to eliminate negative pressure.This mode for preventing negative pressure and eliminating negative pressure is simple, effective, easy to operate.
And the intervention of shut-off valve, end infusion channel again while eliminating negative pressure, not only relatively sanitary, safety, and from structure
On must first step back fitting body (otherwise shut-off valve end, can not be infused) when ensuring infusion again so that infusion terminates to be followed by
Head body has the space promoted to eliminate negative pressure.And the process shut off gradually as fitting body promotes, so that shut-off valve also has
There is flow control valve.And the setting of annular groove and protrusion enables the fitting body being advancing to the position to be not easy by effective position
Actuating armature body due to malfunction.
This external transfusion catheter fluid stopping switch can be widely used on infusion apparatus and on inlying catheter and other
On the conduit of medical transfusion device.
The purpose of the present invention can also be realized by following approach.
Infusion component on the infusion pipeline is the component in interior other than transfusion catheter with infusion channel.In indwelling
On needle, this infusion component can be remaining needle catheter component.
Due to cut-off switch be rather than directly operated on transfusion catheter such as flow-stopping clip in connector pedestal, in this way,
So that this fluid stopping switch of the present invention can infinitely approach other components on infusion pipeline forward or backward, to save
The bridging of slightly infusion segment conduit is plugged into, and keeps infusion device overall structure more compact.
Advanced optimizing for the related protrusion is:
This protrusion is along fitting body is circumferential or continuously distributed or Disjunct distribution.
This protrusion is preferably disposed on fitting body end.
This protrusion is preferably disposed on fitting body end, and fitting body end is fluted along axial sawing.
What this groove made fitting body end inside contracts that space is bigger, to enhance the elastic space of fitting body end.
This protrusion radial direction maximum rounding, leading flank in one kind can stop into vertical plane, thereafter side be in a kind of side
Just the inclined-plane that this protrusion exits, annular groove section configuration and the protrusion section configuration are conjugated.
Advanced optimizing is:
Fitting body leading portion and connector pedestal inner cavity have sealing ring, and carry out through sealing ring between the two with damping
It is cooperatively connected.
This mating connection with damping both may be implemented to seal, and feel also can be enhanced and can viscous fitting body.
It is about advanced optimizing for shut-off valve:
The flap of shut-off valve is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall.
In this way, fitting body is valve rod again.
Advanced optimize and can be following several specific configurations, wherein also one is:
Connector intracoelomic cavity includes vertical passageway and interconnection, and vertical passageway rear end is connected to transfusion catheter, and front end is blind only
And be connected to interconnection, interconnection is located in the inner core of fitting body end, and fitting body end is less than connector pedestal inner cavity, the two
Between gap be connected to as infusion channel with interconnection, fitting body end be in a kind of taper and the flap as shut-off valve,
Connector pedestal inner cavity is only a kind of truncated cone-shaped step corresponding with the taper and as the sealing surface of shut-off valve, the truncated cone-shaped into wall
The interior necking of step is infusion channel mouth.
When fitting body cone-shaped end is touched with corresponding type conical bench, shut-off valve closure；And when fitting body retrogressing, cut-off
Valve open, infusion via fitting body vertical passageway, interconnection, radial clearance and enter type conical bench in necking.
Or more specifically:
Connector pedestal inner cavity is in a kind of stairstepping, corresponding fitting body be also in a kind of ladder shaft-like and with connector pedestal inner cavity
Corresponding position socket, when fitting body retraction, the fitting body end of path and the connector pedestal inner cavity of major diameter are corresponding, the two it
Between gap be connected to as infusion channel with interconnection, at this point, the spline position of fitting body end still with the connector base of path
Seat inner cavity is socketed and supports fitting body, but the flower trough bridging at spline position is connected to gap and connector pedestal inner cavity and and then obtains
To be connected to the transfusion catheter in front of connector pedestal.
Another kind is:
Connector intracoelomic cavity includes vertical passageway, and flap is a kind of a plurality of elastic gates for being coated on fitting body end, is connect
Head pedestal inner cavity is only one kind and the close-shaped corresponding step of a plurality of elastic gates into wall, and step internal orifice is that infusion is logical
Road is touched through with the step, and a plurality of elasticity gates, which be closeds and block, terminates in fitting body vertical passageway mouth.
In this way, fitting body is advancing to the position, and elastic gate closure, shut-off valve cut-off；Fitting body retrogressing lift, elastic gate because
Natural resiliency and open, shut-off valve open.
There are also one is:
Connector intracoelomic cavity includes vertical passageway, and flap is located at the vertical passageway mouthful of fitting body end, and connector pedestal inner cavity is stopped
It is that a kind of middle part is dashed forward convex sharp cone distal or truncated cone-shaped toward fitting body direction into wall, circumference that should only into wall in vertical passageway mouthful periphery
A plurality of infusion channels are distributed on position, through the propulsion of fitting body, the sharp cone distal or truncated cone-shaped are only dashed forward convex middle part into wall
It extend into fitting body vertical passageway and blocks and terminate in the vertical passageway mouthful.
Due to being only located at the periphery of vertical passageway mouthful into the infusion channel on wall, that is, it is located at other than the bore of vertical passageway mouthful
Region, in this way, can not only should lead into the infusion channel on wall with vertical when only dashing forward convex middle part closure at vertical passageway mouthful into wall
Road connection, thus by ending.
Have again one is:
Fitting body front end is coated with a kind of plastic body, this plastic body leading portion is in short cylindrical shape, connector base in truncated cone-shaped, back segment
Corresponding position and the shape in seat inner cavity are conjugated, and the plastic body and the conjugate resonator form shut-off valve, and wherein the plastic body is
Stop valve clack, the conjugate resonator are cut-off valve sealing surface, the plastic body and the conjugate resonator tight fit connection, utilize the bullet of plastic body
Property is squeezed into the conjugate resonator, to can fix connector pedestal and lift head relatively again while turning off shut-off valve.
Advanced optimizing is:
Run through before and after connector intracoelomic cavity, its rear end is connected to transfusion catheter lumen, and front end is cut after being coated by plastic body
Only at blind hole, which is vertical passageway, extends radially through channel composition interconnection at vertical passageway blind hole end, this is total
Connector pedestal inner cavity after yoke chamber is amplified in ladder, has gap between the plastic body of retrogressing and this cascaded surface, this gap across
The transfusion catheter lumen for connecing interconnection and plugging into connector pedestal inner cavity.
In conclusion the present invention have the advantages that compared with prior art prevent negative pressure and eliminate negative pressure mode it is simple,
Effectively, easy to operate.And the intervention of shut-off valve, end infusion channel, not only relatively sanitary, peace again while eliminating negative pressure
Fitting body (otherwise shut-off valve ends, and can not be infused) must be first stepped back when entirely, and from structure ensuring infusion again, so that
Fitting body has the space promoted to eliminate negative pressure after infusion.And the process shut off gradually as fitting body promotes, make
Obtaining shut-off valve also has the function of flow control valve.And the setting of annular groove and protrusion enables the fitting body being advancing to the position to be had
Effect positioning, is not easy actuating armature body due to malfunction.
Detailed description of the invention
Fig. 1 is that a kind of flow-stopping clip is folded in the structural schematic diagram on non small cellCatheter in the prior art；
Fig. 2 is that the external transfusion catheter fluid stopping switch of the positioning of annular groove described in preferred embodiment formula makes in the off state
With the structural schematic diagram on remaining needle；Fig. 3 is the amplification signal of the external transfusion catheter fluid stopping switch of annular groove positioning formula in Fig. 2
Figure；
Fig. 4 is the knot of the fitting body in the external transfusion catheter fluid stopping switch of the positioning of annular groove described in preferred embodiment formula
Structure schematic isometric；
Fig. 5 is that the external transfusion catheter fluid stopping switch of the positioning of annular groove described in preferred embodiment formula makes in the on state
With the structural schematic diagram on remaining needle.
Label declaration
1 conduit tube component, 2 fitting body, 21 vertical passageway, 22 interconnection, 23 gap, 24 spline, 25 protrusion, 26 groove 3
71 flap of connector pedestal 31 annular groove, 4 transfusion catheter, 5 seal rubber plug, 6 sealing ring, 7 shut-off valve, 72 sealing surface.
Specific embodiment
Most preferred embodiment:
Referring to Fig. 2 and Fig. 5, a kind of indwelling using the external transfusion catheter fluid stopping switch of annular groove of the present invention positioning formula
Needle is made of conduit tube component 1, fitting body 2, connector pedestal 3, transfusion catheter 4 and seal rubber plug 5 etc..
Referring to Fig. 3 and Fig. 4, annular groove positions the external transfusion catheter fluid stopping switch of formula, including connector pedestal 3, fitting body 2, close
Seal 6 and shut-off valve 7,3 front end of connector pedestal are plugged into transfusion catheter 4, and 2 rear end of fitting body is plugged into transfusion catheter 4, fitting body
2 leading portions are plugged in 3 inner cavity of connector pedestal with scalable slip mode, have connector between 3 inner cavity of fitting body 2 and connector pedestal
The space that body 2 promotes, it is circumferentially arranged in 3 inner cavity of connector pedestal to have a kind of annular groove 31, corresponding a, bullet in fitting body 2
Property plastic body on be provided with a kind of protrusion 25 that is embeddable and exiting the annular groove 31, the fitting body 2 being advancing to the position, this protrusion 25
It is just embedded in the annular groove 31,2 inner cavity of fitting body is connected to by a kind of shut-off valve 7 with 3 inner cavity of connector pedestal, this shut-off valve 7 is set
It sets and promotes in above-mentioned fitting body 2 in space and through the shutdown for the completion shut-off valve 7 of fitting body 2 being advancing to the position.
The flap 71 of shut-off valve 7 is located at 2 end of fitting body, and cut-off valve sealing surface 72 is located at connector pedestal inner cavity only into wall
On.In this way, fitting body 2 is again valve rod.Fitting body 2 is made of a kind of plastic body, and front end is in truncated cone-shaped, in connector pedestal 3
Corresponding position and the shape in chamber are conjugated, and the truncated cone-shaped end and the conjugate resonator form shut-off valve 7, wherein the truncated cone-shaped end
Head is stop valve clack 71, which is cut-off valve sealing surface 72, the truncated cone-shaped end and the conjugate resonator tight fit connection, benefit
It is squeezed into the conjugate resonator with the elasticity of plastic body and along the groove 26 that axial direction is set to the concave by end.Behind truncated cone-shaped end
Portion is a kind of 24 position of spline, and the radial maximum of this spline is exactly the protrusion 25, the radial maximum rounding of this protrusion 25,
Its leading flank in one kind can stop into vertical plane, thereafter side be in a kind of inclined-plane for facilitating this protrusion 25 to exit, annular groove 31
Section configuration and 25 section configuration of protrusion are conjugated.When truncated cone-shaped end front end face and connector pedestal inner cavity are only contacted into wall,
Shut-off valve 7 ends, and simultaneously the protrusion 25 just slid into the annular groove 31 by its rounding from 31 inclined-plane of annular groove and with the ring
The conjugation interlocking of shape slot 31, so that connector pedestal 3 and fitting body 2 can be fixed relatively again while turning off shut-off valve 7.
2 inner cavity of fitting body includes vertical passageway 21 and interconnection 22, and 21 rear end of vertical passageway is connected to transfusion catheter 4,
Front end is blind to stop and is connected to interconnection 22, and interconnection 22 is located in 2 end inner core of fitting body, and 3 inner cavity of connector pedestal is in one
Kind stairstepping, corresponding fitting body 2 are also socketed in a kind of ladder shaft-like and with the corresponding position of 3 inner cavity of connector pedestal, work as connector
When 2 retraction of body, 2 end of fitting body of path is corresponding with 3 inner cavity of connector pedestal of major diameter, and gap 23 between the two is as infusion
Channel is connected to interconnection 22, at this point, 24 position of spline of 2 end of fitting body is still socketed with 3 inner cavity of connector pedestal of path
And support fitting body 2, but 24 position of spline flower trough bridging be connected to gap 23 and 3 inner cavity of connector pedestal and be able in turn with
The transfusion catheter 4 in 3 front of connector pedestal is connected to.
2 leading portion of fitting body and 3 inner cavity of connector pedestal have sealing ring 6, and are had through sealing ring 6 between the two
The mating connection of damping.Mating connection with damping both may be implemented to seal, and feel also can be enhanced and can viscous fitting body.
The not described part of the present embodiment is same as the prior art.
Claims (14)
1. annular groove positions the external transfusion catheter fluid stopping switch of formula, which is characterized in that including connector pedestal and fitting body, connector pedestal
Front end plugs into transfusion catheter or plugs into the infusion component on infusion pipeline, and fitting body rear end connects with transfusion catheter
It refutes, fitting body leading portion is plugged in connector pedestal inner cavity with scalable slip mode, is had between fitting body and connector pedestal inner cavity
The space for thering is fitting body to promote, it is circumferentially arranged in connector pedestal inner cavity to have a kind of annular groove, corresponding a, bullet in fitting body
Property plastic body on be provided with a kind of protrusion that is embeddable and exiting the annular groove, the fitting body being advancing to the position, this protrusion is just embedded in
In the annular groove, connector intracoelomic cavity is connected to by a kind of shut-off valve with connector pedestal inner cavity, this shut-off valve is arranged in above-mentioned connector
Body promotes the shutdown that shut-off valve is completed in space and through the fitting body being advancing to the position；
This protrusion radial direction maximum rounding, leading flank in one kind can stop into vertical plane, side facilitates this in a kind of thereafter
The inclined-plane that protrusion exits, annular groove section configuration and the protrusion section configuration are conjugated.
2. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that the perfusion tube
The infusion component of road is the component in interior other than transfusion catheter with infusion channel.
3. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1 or 2, which is characterized in that described defeated
Infusion component on liquid pipeline is remaining needle catheter component on remaining needle.
4. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that this protrusion edge connects
Body is circumferential or continuously distributed or Disjunct distribution for head.
5. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1 or 4, which is characterized in that this protrusion
It is arranged in fitting body end.
6. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that the setting of this protrusion
In fitting body end, and fitting body end is fluted along axial sawing.
7. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that fitting body leading portion
There is sealing ring with connector pedestal inner cavity, and carry out the mating connection with damping through sealing ring between the two.
8. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that the valve of shut-off valve
Valve is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall.
9. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that the valve of shut-off valve
Valve is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall, and connector intracoelomic cavity includes vertical passageway
And interconnection, vertical passageway rear end are connected to transfusion catheter, front end is blind to stop and is connected to interconnection, and interconnection, which is located at, to be connect
In head body end portion inner core, fitting body end is less than connector pedestal inner cavity, and gap between the two is logical as infusion channel and laterally
Road connection, fitting body end are in a kind of taper and the flap as shut-off valve, and connector pedestal inner cavity is only a kind of and cone into wall
The corresponding truncated cone-shaped step of shape and the sealing surface as shut-off valve, the interior necking of the truncated cone-shaped step are infusion channel mouths.
10. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 9, which is characterized in that connector pedestal
Inner cavity is in a kind of stairstepping, and corresponding fitting body is also in a kind of ladder shaft-like and is socketed with the corresponding position of connector pedestal inner cavity,
When fitting body retraction, the fitting body end of path and the connector pedestal inner cavity of major diameter are corresponding, and gap between the two is as defeated
Liquid channel is connected to interconnection, at this point, the spline position of fitting body end is still socketed and props up with the connector pedestal inner cavity of path
Support fitting body, but the flower trough bridging at spline position be connected to gap and connector pedestal inner cavity and be able in turn with before connector pedestal
The transfusion catheter connection of side.
11. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that shut-off valve
Flap is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall, and connector intracoelomic cavity includes vertical logical
Road, flap are a kind of a plurality of elastic gates for being coated on fitting body end, and connector pedestal inner cavity is only a kind of multiple with this into wall
Several elasticity gate close-shaped corresponding steps, step internal orifice is infusion channel, is touched through with the step, a plurality of bullets
Property gate be closed and block and terminate in fitting body vertical passageway mouthful.
12. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that shut-off valve
Flap is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall, and connector intracoelomic cavity includes vertical logical
Road, flap are located at the vertical passageway mouthful of fitting body end, and connector pedestal inner cavity is only that a kind of middle part is prominent toward fitting body direction into wall
Should a plurality of infusion channels only be distributed on the circumferential position of vertical passageway mouthful periphery into wall in convex sharp cone distal or truncated cone-shaped,
Through the propulsion of fitting body, the sharp cone distal or truncated cone-shaped only extend into fitting body vertical passageway and block and cut into wall convex middle part of dashing forward
Only in the vertical passageway mouthful.
13. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 1, which is characterized in that shut-off valve
Flap is located at fitting body end, and cut-off valve sealing surface, which is located at connector pedestal inner cavity, to be stopped on wall, and fitting body front end is coated with one kind
Plastic body, this plastic body leading portion are in short cylindrical shape in truncated cone-shaped, back segment, and the corresponding position and the shape in connector pedestal inner cavity are total
Yoke forms conjugate resonator, and the plastic body and the conjugate resonator form shut-off valve, and wherein the plastic body is stop valve clack, the conjugate resonator
To end valve sealing surface, the plastic body and the conjugate resonator tight fit connection, the conjugate resonator is squeezed into using the elasticity of plastic body
In, so that connector pedestal and lift head can be fixed relatively again while turning off shut-off valve.
14. the external transfusion catheter fluid stopping switch of annular groove positioning formula according to claim 13, which is characterized in that in fitting body
It is formed there through channel before and after chamber, its rear end is connected to transfusion catheter lumen, and front end is ended after being coated by plastic body into blind hole,
The channel is vertical passageway, channel composition interconnection is extended radially through at vertical passageway blind hole end, after the conjugate resonator
Connector pedestal inner cavity amplify in ladder, there is gap, this gap bridging is laterally logical between the plastic body of retrogressing and this cascaded surface
Road and the transfusion catheter lumen plugged into connector pedestal inner cavity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/080778 WO2015017962A1 (en) | 2013-08-03 | 2013-08-03 | Annular groove-positioned in vitro infusion catheter stagnation switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105407942A CN105407942A (en) | 2016-03-16 |
| CN105407942B true CN105407942B (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380078540.5A Active CN105407942B (en) | 2013-08-03 | 2013-08-03 | Annular groove positions the external transfusion catheter fluid stopping switch of formula |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105407942B (en) |
| WO (1) | WO2015017962A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108452434B (en) * | 2018-05-24 | 2024-01-09 | 深圳市迈威生物科技有限公司 | Multiple unidirectional airtight joint and pipeline device |
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| CN102058917A (en) * | 2010-12-03 | 2011-05-18 | 上海金塔医用器材有限公司 | Liquid stopping control device of drop infusion apparatus |
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2013
- 2013-08-03 WO PCT/CN2013/080778 patent/WO2015017962A1/en active Application Filing
- 2013-08-03 CN CN201380078540.5A patent/CN105407942B/en active Active
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| CN2759489Y (en) * | 2004-09-16 | 2006-02-22 | 王升 | Infusion flow adjuster |
| CN103124582A (en) * | 2010-05-06 | 2013-05-29 | Icu医学有限公司 | Medical connector with closeable luer connector |
| CN202605411U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Medical needle-free positive pressure joint |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015017962A1 (en) | 2015-02-12 |
| CN105407942A (en) | 2016-03-16 |
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