CN105727393B - A kind of liquid-stopping device - Google Patents
A kind of liquid-stopping device Download PDFInfo
- Publication number
- CN105727393B CN105727393B CN201610234870.4A CN201610234870A CN105727393B CN 105727393 B CN105727393 B CN 105727393B CN 201610234870 A CN201610234870 A CN 201610234870A CN 105727393 B CN105727393 B CN 105727393B
- Authority
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- China
- Prior art keywords
- bowl
- float
- cambered surface
- sealing
- piston
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 238000001802 infusion Methods 0.000 abstract description 19
- 238000001727 in vivo Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 12
- 239000012530 fluid Substances 0.000 description 9
- 230000010412 perfusion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001990 intravenous administration Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012865 aseptic processing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
- A61M5/16881—Regulating 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
- 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
- A61M5/40—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 using low-level float-valve to cut off media flow from reservoir
Abstract
The invention discloses a kind of liquid-stopping devices, wherein includes: shell, it is in hollow reservoir and the runner that lower body lower part is arranged in that the shell has a lower body and is arranged in lower in vivo；Stop collar, the stop collar is located in reservoir, and can float up and down in reservoir, and the stop collar has upper hole, outer wall ring and several inflatable chambers, and the outer wall ring can be inconsistent with the inner wall of reservoir, accommodates nitrogen in the inflatable chamber；Piston, the piston is located in reservoir, and it can be moved up and down in reservoir, the piston has piston inclined-plane, it the piston inclined-plane can be inconsistent with the upper hole inclined-plane in upper hole, the top of the piston is equipped with float, and the lower part of the piston is equipped with sealing-plug, and the sealing-plug can be inconsistent with the side of the runner.The configuration of the present invention is simple, the reliability that can repeatedly seal, can improve infusion pipeline sealing, further increase safety.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of liquid-stopping device.
Background technique
Infusion apparatus be it is a kind of be mainly used for venous transfusion it is through aseptic processing, establish channel between vein and medical fluid
Common disposable medical treatment consumptive materials.Generally by intravenous needle, helmet, infusion tube, liquid medicine filter, flow regulator, drop pot,
Bottle plug puncture unit, air inlet pipe air filter connection composition, but disposable transfusion device infusion terminate or more renew infusion bottle or
When infusion bag, if nursing staff does not wear plug needle through infusion tube to enter patient with medical fluid intravenous note that will bypass air through,
Security risk is brought to patient, the fear of Yi Yinqi patient also easily causes doctor-patient dispute.
Chinese patent CN201220351992.9 discloses a kind of automatic liquid-stopping transfusion apparatus comprising sequentially connected to wear plug
Needle, dropping funnel, perfusion tube, the flow regulator being set on perfusion tube, filter, transfusion needle and automatic liquid-stopping component, auto-stopping
Liquid component is set as being respectively communicated with dropping funnel and perfusion tube up and down；Wherein, automatic liquid-stopping component includes the valve seat of both ends open, setting
In locating part and relocatable spool in valve seat, valve seat includes sealing bulge loop, and spool can be abutted with the upper surface of sealing bulge loop,
Spool can move up and down between locating part and sealing bulge loop.The automatic liquid-stopping transfusion apparatus of the utility model, by utilizing medical fluid
Buoyancy carry out automatic control valve core and contacted or closed state with sealing bulge loop, to reach the folding condition of automatic control liquid outlet
Purpose, at the end of exchanging infusion bottle (bag) or infusion nearly can Automatic-closing transfusion system channel, greatly reduce and be infused
The security risk of patient in journey, while the pressure of nursing staff is also mitigated, reduce doctor-patient dispute.
Chinese patent CN 201210088609.X discloses a kind of disposable automatic liquid-stopping transfusion apparatus and preparation method thereof,
Infusion apparatus includes a release mechanism, and the release mechanism includes a shell and a floating body in the shell, the shell
Body includes at least one medicine liquid outlet portion, and lower end is connecting pin in the shell, which has the through-hole for liquid medicine flow,
The connecting pin is raised in the medicine liquid outlet portion of the shell, and a concave shaped portion, setting in the concave shaped portion are equipped with below the floating body
There is seal cap, the seal cap includes crown and annular cap body, and one end of annular cap body is closed through crown, and the other end is opening
End, the opening direction of annular cap body and the indent of concave shaped portion are contrary, and the diameter of opening is greater than the diameter of connecting pin.This hair
Bright purpose is to can ensure that the automatic sealing package of infusion pipeline when exchanging infusion bottle and at the end of infusion nearly using repeatedly sealing
It closes, prevents air from entering on the basis of patient's body really, improve the reliability of infusion pipeline sealing, further increase safety.
Though above-mentioned patent can inhibit bubble still to will cause bubble for certain special states into perfusion tube well
Into, when being reversed such as shell, air will float into perfusion tube, simultaneously with this, in some special cases, infusion apparatus end
When portion causes a departure from, internal medical fluid will continue to outflow and cause to waste.
Therefore it is badly in need of that a kind of structure is simple, novel liquid-stopping device of sealed reliable.
Summary of the invention
The present invention can improve perfusion tube in view of the above-mentioned problems, provide the liquid-stopping device that a kind of structure is simple, can repeatedly seal
The reliability of road sealing, further increases safety.
Technical solution used by the present invention solves the above problems is:
A kind of liquid-stopping device, wherein include: shell, the shell has a lower body and is arranged in lower in vivo in hollow storage
Liquid bath and the runner that lower body lower part is set；Stop collar, the stop collar are located in reservoir, and can be in reservoir up and down
It floats, the stop collar has upper hole, outer wall ring and several inflatable chambers, and the outer wall ring can offset with the inner wall of reservoir
It touches, accommodates nitrogen in the inflatable chamber；Piston, the piston is located in reservoir, and can move up and down in reservoir, institute
Piston is stated with piston inclined-plane, the piston inclined-plane can be inconsistent with the upper hole inclined-plane in upper hole, and the top of the piston is equipped with floating
The lower part of son, the piston is equipped with sealing-plug, and the sealing-plug can be inconsistent with the side of the runner.
Above structure is it is found that outer wall ring is contacted with the inner wall of reservoir, so that the inner wall of stop collar and reservoir is closely close
It seals, accommodates nitrogen in inflatable chamber, so that stop collar is steady when falling, and do not influenced by shell state, outer wall ring can be made
With the inner wall reliable contacts of reservoir, play the role of sealing, piston inclined-plane is in contact with the upper hole inclined-plane in upper hole, plays sealing
Effect, the side of sealing-plug and the runner is inconsistent so that sealing it is more reliable.
Further, the side of the runner, which has, is sequentially connected the first cambered surface and the second cambered surface connect, the sealing-plug
With bowl once, the surface of the lower bowl, which has, is sequentially connected the first cambered surface of lower bowl connect and lower the second cambered surface of bowl, and described first
Cambered surface and lower the first cambered surface of bowl are inconsistent, and second cambered surface and lower the second cambered surface of bowl are inconsistent.
Above structure is it is found that the cambered surface of runner is in contact with the cambered surface of lower bowl, so that sealing is further reliable.
Further, also there is the stop collar flange, the lower counterbore surrounded by flange and through-hole, the flange setting to exist
The lower end of outer wall ring, the flange can be kept out on inner wall, and the through-hole connects with upper hole and lower counterbore, and the through-hole can hold
Receive piston inclined-plane, the lower counterbore can accommodate sealing-plug.
Further, the sealing-plug also has interconnecting piece, upper bowl and seal chamber, and the interconnecting piece in a ring, and inclines
Extend obliquely upward, upper bowl is connected between interconnecting piece and lower bowl, the seal chamber be located at interconnecting piece, upper bowl and lower bowl it
Between.
Above structure makes sealing-plug lighter, is easy to float when liquid is full of shell, can be with liquid when liquid flow is complete
Rapid decrease.
Further, upper bowl, which has, is sequentially connected the first cambered surface of upper bowl, the second cambered surface of upper bowl, upper bowl third connect
Cambered surface, the first cambered surface of upper bowl are connected with lower the first cambered surface of bowl, and upper bowl third cambered surface is connected with interconnecting piece.
Above structure makes sealing-plug lighter.
Further, the sealing-plug also has sealing edge, seal groove and buffer part, and the sealing edge is connected to lower bowl
In second cambered surface, the seal groove is located at the outside of sealing edge, and the buffer locations are connected in lower the second cambered surface of bowl with sealing edge
Place.
Above structure makes sealing-plug and runner sealed reliable, and prevents sealing-plug from shaking and floating.
Further, the radius of curvature of the seal groove is 0.10mm~0.20mm.
Further, the radius of curvature of the seal groove is 0.15mm.
Above structure makes sealing edge have certain elasticity, enables sealing edge and runner side tight seal.
Further, the float is hollow spherical in shape, and the float has float cavity, float edge and float opening, institute
It states float edge to extend to outside float, the float opening is located at the lower part of float, and is located at the inside of float edge.
Above structure plays the role of balance, enables above-mentioned each sealing contact surface reliable contacts.
Further, the float opening connects with float cavity, the front end semicircular in shape of the float edge.
The invention has the advantages that
1. the lower body inner wall of stop collar cooperation certain taper in the present invention, in the state that syringe needle is detached from vein, medical fluid stream
Amount sharply increases, and can timely accomplish the effect for declining the conveying of hermetic barrier medical fluid；
2. buoyancy of the float by medical fluid in the present invention on piston draws piston and sealing-plug into reservoir
Portion, when medical fluid has fallen, float and piston and sealing-plug can rapid decrease simultaneously, and while playing decline, does not swing；
3. medical fluid flow to top in the present invention when liquid-stopping device is reversed, float float by sealing-plug closing pipe line,
Air is avoided to enter pipeline.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
It forms part of this specification, show preferred implementation of the invention for further understanding attached drawing of the invention
Example, and be used to illustrate the principle of the present invention together with specification.In the accompanying drawings:
Fig. 1 is complete section structural schematic diagram of the invention；
Fig. 2 is that first partial of the invention cuts open structural schematic diagram；
Fig. 3 is stop collar structural schematic diagram of the invention；
Fig. 4 is the second partial cutaway structural schematic diagram of the invention；And
Fig. 5 is the cross-sectional view of sealing-plug of the invention.
Wherein, in the figure, it is marked as
10 be shell, 11 be upper cover, 12 be lower body, 13 be reservoir, 14 be inner wall, 15 be lower nozzle, 16 be pedestal,
161 it is arc on pedestal, 17 be runner, 171 be the first cambered surface, 172 be the second cambered surface, 20 floats, 21 be float cavity, 22 is float
Edge, 23 be float opening, 30 be piston, 31 be upper piston rod, 32 be piston edge, 33 be piston inclined-plane, 34 be lower piston rod, 40
It is upper hole for stop collar, 41,42 be upper hole inclined-plane, 43 be through-hole, 44 be lower counterbore, 45 be outer wall ring, 46 be flange, 50 is close
Blocking, 51 be interconnecting piece, 52 be sealed groove, 53 be upper bowl, 531 be upper the first cambered surface of bowl, 532 be upper the second cambered surface of bowl, 533
It is lower bowl for upper bowl third cambered surface, 54,541 be lower the first cambered surface of bowl, 542 be lower the second cambered surface of bowl, 55 be seal chamber, 56 is close
Feng Yuan, 57 be seal groove, 58 be buffer part.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Embodiment 1
Referring to figs. 1 to Fig. 5, a kind of liquid-stopping device as shown in Figure 1, including shell 10 includes upper cover 11 on the shell 10,
11 lower part of upper cover is equipped with lower body 12, and the lower body 12 includes pedestal 16, and the lower body 12, which is equipped with, passes through the inner wall with gradient
14 reservoirs 13 formed, the pedestal 16 include arc 161 on a pedestal, are equipped with runner 17, the stream in the middle part of the pedestal 16
Road 17 is made of the first cambered surface 171 and the second cambered surface 172, and lower nozzle 15 is equipped in the middle part of the runner 17.
Referring to figs. 1 to Fig. 3, a kind of liquid-stopping device as shown in Figure 1 to Figure 3, the lower body 12 is interior to be equipped with a stop collar 40, institute
40 top of stop collar is stated equipped with outer wall ring 45,45 lower part of outer wall ring is equipped with flange 46, and the outer wall ring 45 is equipped with upper hole
41, it is equipped with upper hole inclined-plane 42 on the outside of the upper hole 41, through-hole 43 is equipped with below the upper hole 41, is equipped in the flange 46
Hole 44, the lower counterbore 44 are connected perforation with through-hole 43, and the outer wall ring 45 is with 46 outer wall of flange in cone.
With reference to Fig. 1, Fig. 4, a kind of liquid-stopping device as Figure 1 and Figure 4 includes a piston 30 on the stop collar 40, described
Piston 30 includes a piston edge 32, and the piston edge 32 is equipped with upper piston rod 31, and it is oblique to be equipped with piston below the piston edge 32
Face 33, the piston inclined-plane 33 are sealed and are opened and closed by inclined-plane cooperation with skewed slot 42, and one is equipped with below the piston inclined-plane 33
Lower piston rod 34；A float 20 is equipped at the top of the upper piston rod 31, the float 20 includes a float cavity 21 and float edge
22, float opening 23 is provided with below the float edge 22.
With reference to Fig. 1, Fig. 4 and Fig. 5, such as Fig. 1, Fig. 4 and a kind of liquid-stopping device shown in fig. 5,34 end of lower piston rod is set
There is a sealing-plug 50, the sealing-plug 50 includes by upper the first cambered surface of bowl 531, the second cambered surface of upper bowl 532 and upper bowl third cambered surface
The upper bowls 53 of 533 compositions are equipped with an interconnecting piece 51 in the middle part of upper bowl 53 and are connected with lower piston rod 34, upper bowl 53 and connect
Portion 51 forms sealed groove 52；The sealing-plug further includes lower bowl 54, and the lower bowl 54 is by lower the first cambered surface of bowl 541 and lower bowl
Two cambered surfaces 542 composition, upper bowl 53 and lower bowl 54 form a seal chamber 55, and lower 54 end of bowl further includes a sealing edge
56, the sealing edge 56 is interior to be equipped with a buffer part 58, and 56 periphery of sealing edge is equipped with seal groove 57.
Embodiment 2
Referring to figs. 1 to Fig. 5, a kind of liquid-stopping device as shown in Figure 1, wherein the liquid-stopping device includes shell 10,40 and of stop collar
Piston 30, the shell 10 have a lower body 12, upper cover 11, pedestal 16, reservoir 13, runner 17 and lower nozzle 15, upper cover 11
It is mounted on the top of lower body 12, pedestal 16 is fixed on the lower part of lower body 12, and reservoir 13 is located inside lower body 12 in hollow,
Runner 17 is arranged in pedestal 16, as shown in Fig. 2, the setting of lower nozzle 15 connects in pedestal 16, and with runner 17, pedestal 16
On be additionally provided with arc 161 on pedestal, the stop collar 40 is located in reservoir 13, and can float up and down in reservoir 13, described
Piston 30 is located in reservoir 13, and can move up and down in reservoir 13, and the top of the piston 30 is equipped with float 20, described
The lower part of piston 30 is equipped with sealing-plug 50.
As shown in Figures 2 and 3, the stop collar 40 have upper hole 41, outer wall ring 45, several inflatable chambers, flange 46, by
The lower counterbore 44 and through-hole 43 that flange 46 surrounds, the outer wall ring 45 can be inconsistent with the inner wall 14 of reservoir 13, the inflation
It is intracavitary to accommodate nitrogen, nitrogen is accommodated in inflatable chamber and makes stop collar 40 steady when falling, and is swung few, it is ensured that flange 46
With 14 tight seal of inner wall, the lower end of outer wall ring 45 is arranged in the flange 46, and the flange 46 can be kept out on inner wall 14, institute
It states through-hole 43 to connect with upper hole 41 and lower counterbore 44, the through-hole 43 can accommodate piston inclined-plane 33, and the lower counterbore 44 can be held
Receive sealing-plug 50.
As shown in figure 4, the piston 30 has piston inclined-plane 33 and piston edge 32, the top of the piston 30 is equipped with upper work
Stopper rod 31, float 20 are connected on upper piston rod 31, and the lower part of the piston 30 is equipped with lower piston rod 34, and sealing-plug 50 is connected to
On lower piston rod 34, the float 20 is hollow spherical in shape, and the float 20 has float cavity 21, float edge 22 and float opening
23, the inner wall of float cavity 21 is connected on upper piston rod 31, and the float edge 22 extends to outside float 20, the float opening 23
Positioned at the lower part of float 20, and it is located at the inside of float edge 22, the float opening 23 connects with float cavity 21, the float
The front end semicircular in shape of edge 22, the piston inclined-plane 33 can be inconsistent with the upper hole inclined-plane 42 in upper hole 41, due to inflatable chamber content
Receiving has nitrogen, thus piston inclined-plane 33 and upper 42 sealed reliable of hole inclined-plane, and the sealing-plug 50 can be with the side of the runner 17
It is inconsistent.
As shown in Figure 1, Figure 2 and shown in Fig. 5, it is preferable that the side of the runner 17, which has, is sequentially connected the first cambered surface 171 connect
With the second cambered surface 172, the sealing-plug 50 has bowl 54, and the surface of the lower bowl 54 has the lower bowl for being sequentially connected and connecing
One cambered surface 541 and lower the second cambered surface of bowl 542, first cambered surface 171 and lower bowl the first cambered surface 541 are inconsistent, second arc
Face 172 and lower bowl the second cambered surface 542 are inconsistent, and multiple cambered surfaces of runner 17 are in contact with multiple cambered surfaces of lower bowl, so that repeatedly
It seals more reliable.
The sealing-plug 50 also has sealed groove 52, interconnecting piece 51, upper bowl 53 and seal chamber 55, and sealed groove 52 is located at
The top of sealing-plug 50 can be hydraulically full in sealed groove 52 when liquid falls, when sealing-plug 50 falls, sealed groove
Liquid in 52 under the action of self-weight, can accelerate sealing-plug 50 to fall, it is ensured that sealing-plug 50 and runner 17 reliably seal, simultaneously
Liquid gravity plays the role of pushing sealing-plug 50, so that multiple cambered surfaces of lower bowl and the sealing of multiple cambered surfaces of runner 17 are further
Reliably, the interconnecting piece 51 in a ring, and tilts upward extension, and upper bowl 53 is connected between interconnecting piece 51 and lower bowl 54,
The seal chamber 55 is located between interconnecting piece 51, upper bowl 53 and lower bowl 54, dead beat when such structure makes sealing-plug 50 fall
Dynamic, multiple cambered surfaces sealing of the multiple cambered surfaces and runner 17 that guarantee lower bowl is further reliable.
Upper bowl 53, which has, is sequentially connected the first cambered surface of upper bowl 531, the second cambered surface of upper bowl 532, upper bowl third arc connect
Face 533, sealing edge 56, seal groove 57 and buffer part 58, the first cambered surface of upper bowl 531 are connected with lower the first cambered surface of bowl 541,
Upper bowl third cambered surface 533 is connected with interconnecting piece 51, and the sealing-plug 50 also has, and the sealing edge 56 is connected to lower bowl
In second cambered surface 542, the seal groove 57 is located at the outside of sealing edge 56, and the buffer part 58 is located at lower the second cambered surface of bowl 542
With 56 junction of sealing edge.
Preferably, the radius of curvature of the seal groove 57 is 0.10mm~0.20mm, and sealing edge 56 is made to have certain bullet
Property, so that sealing edge 56 and the side sealing of runner 17 are more reliable.
Preferably, the radius of curvature of the seal groove 57 is 0.15mm.So that the side of sealing edge 56 and runner 17 seals
Effect is best.
It can be seen from the above, the present invention uses multiple sealing structure, it, can be really when exchanging infusion bottle and at the end of infusion nearly
The self-closed for protecting infusion tube shell 10, prevents air from entering patient's body, the reliability of infusion pipeline sealing is improved, into one
Step improves safety, the integral structure of float 20, piston 30 and sealing-plug 50, so that sealing is relatively reliable.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of liquid-stopping device characterized by comprising
Shell (10), the shell (10) have a lower body (12) and setting in lower body (12) and pass through the inner wall 14 with gradient
The runner (17) in hollow reservoir (13) and setting in lower body (12) lower part formed, the side tool of the runner (17)
There are the first cambered surface (171) and the second cambered surface (172) for being sequentially connected and connecing；
Stop collar (40), the stop collar (40) are located in reservoir (13), and can float up and down in reservoir (13), described
Stop collar (40) can be with reservoir (13) with upper hole (41), outer wall ring (45) and several inflatable chambers, the outer wall ring (45)
Inner wall (14) it is inconsistent, accommodate nitrogen in the inflatable chamber；
Piston (30), the piston (30) are located in reservoir (13), and can move up and down in reservoir (13), the piston
(30) there are piston inclined-plane (33), the piston inclined-plane (33) can be inconsistent with the upper hole inclined-plane (42) of upper hole (41), the work
The top for filling in (30) is equipped with float (20), and the lower part of the piston (30) is equipped with sealing-plug (50), and the sealing-plug (50) includes
Interconnecting piece (51), upper bowl (53), lower bowl (54) and seal chamber (55), the interconnecting piece (51) in a ring, and tilt upward extension,
Upper bowl (53) is connected between interconnecting piece (51) and lower bowl (54), and the seal chamber (55) is located at interconnecting piece (51), upper bowl
(53) between lower bowl (54), the surface of the lower bowl (54), which has, is sequentially connected the first cambered surface of lower bowl (541) connect and lower bowl
Second cambered surface (542), first cambered surface (171) and lower the first cambered surface of bowl (541) are inconsistent, second cambered surface (172) with
Lower the second cambered surface of bowl (542) is inconsistent.
2. liquid-stopping device according to claim 1, which is characterized in that the stop collar (40) also has flange (46), by convex
The lower counterbore (44) and through-hole (43) that edge (46) surrounds, the flange (46) are arranged in the lower end of outer wall ring (45), the flange
(46) it can keep out on inner wall (14), the through-hole (43) connects with upper hole (41) and lower counterbore (44), the through-hole (43)
It can accommodate piston inclined-plane (33), the lower counterbore (44) can accommodate sealing-plug (50).
3. liquid-stopping device according to claim 2, which is characterized in that upper bowl (53) has the upper bowl for being sequentially connected and connecing
One cambered surface (531), the second cambered surface of upper bowl (532), upper bowl third cambered surface (533), the first cambered surface of upper bowl (531) and lower bowl the
One cambered surface (541) is connected, and upper bowl third cambered surface (533) is connected with interconnecting piece (51).
4. liquid-stopping device according to claim 3, which is characterized in that the sealing-plug (50) also has sealing edge (56), close
Sealing groove (57) and buffer part (58), the sealing edge (56) are connected on lower the second cambered surface of bowl (542), seal groove (57) position
In the outside of sealing edge (56), the buffer part (58) is located at lower the second cambered surface of bowl (542) and sealing edge (56) junction.
5. liquid-stopping device according to claim 4, which is characterized in that the radius of curvature of the seal groove (57) be 0.10mm~
0.20mm。
6. liquid-stopping device according to claim 5, which is characterized in that the radius of curvature of the seal groove (57) is 0.15mm.
7. liquid-stopping device according to any one of claim 1 to 6, which is characterized in that the float (20) is hollow spherical in shape,
There are the float (20) float cavity (21), float edge (22) and float to be open (23), and the float edge (22) is to float (20)
Outer extension, the float opening (23) is located at the lower part of float (20), and is located at the inside of float edge (22).
8. liquid-stopping device according to claim 7, which is characterized in that the float opening (23) is mutually passed through with float cavity (21)
It is logical, the front end semicircular in shape of the float edge (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016100058919 | 2016-01-06 | ||
| CN201610005891.9A CN105561448A (en) | 2016-01-06 | 2016-01-06 | Liquid stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105727393A CN105727393A (en) | 2016-07-06 |
| CN105727393B true CN105727393B (en) | 2019-06-28 |
Family
ID=55872431
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610005891.9A Pending CN105561448A (en) | 2016-01-06 | 2016-01-06 | Liquid stopper |
| CN201610234870.4A Expired - Fee Related CN105727393B (en) | 2016-01-06 | 2016-04-14 | A kind of liquid-stopping device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610005891.9A Pending CN105561448A (en) | 2016-01-06 | 2016-01-06 | Liquid stopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105561448A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BR102016016091B1 (en) * | 2016-07-11 | 2019-05-14 | Norival Caetano | OPEN AND CLOSE MECHANISM VALVE FOR PURSE USED FOR PACKAGING, RECONSTITUTION AND / OR DILUTION OF INJECTABLE USE PRODUCTS |
| CN107596492A (en) * | 2017-09-29 | 2018-01-19 | 陈芳 | A kind of transfusion device back-flow preventer |
| CN109466698A (en) * | 2018-12-28 | 2019-03-15 | 马根昌 | From draining safety ship |
| CN109506032A (en) * | 2019-01-09 | 2019-03-22 | 任丘市瑞华星水暖器材有限公司 | A kind of floating ball of exhaust valve |
| CN112426588A (en) * | 2020-11-30 | 2021-03-02 | 李连洪 | Multifunctional medical gas-liquid pot |
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| CN102188765A (en) * | 2010-03-04 | 2011-09-21 | 廖首猜 | Infusion and transfusion fixed safety device |
| CN101905052B (en) * | 2009-06-08 | 2012-07-04 | 汪贤宗 | Drip infusion fixer and safety infusion water-sealing device |
| CN102813983A (en) * | 2012-08-09 | 2012-12-12 | 四川普瑞斯生物科技有限公司 | Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device |
| CN104815366A (en) * | 2015-05-29 | 2015-08-05 | 江苏康宝医疗器械有限公司 | Disposable automatic liquid-stopping infusion apparatus |
| CN205626634U (en) * | 2016-01-06 | 2016-10-12 | 德施普科技发展温州有限公司 | End liquid ware |
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| JP2007125164A (en) * | 2005-11-02 | 2007-05-24 | Advanex Inc | Valve mechanism and infusion set |
| US8328770B2 (en) * | 2011-01-07 | 2012-12-11 | Hsien-Tsung Wang | Disposable blood transfusion device |
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- 2016-01-06 CN CN201610005891.9A patent/CN105561448A/en active Pending
- 2016-04-14 CN CN201610234870.4A patent/CN105727393B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905052B (en) * | 2009-06-08 | 2012-07-04 | 汪贤宗 | Drip infusion fixer and safety infusion water-sealing device |
| CN102188765A (en) * | 2010-03-04 | 2011-09-21 | 廖首猜 | Infusion and transfusion fixed safety device |
| CN102813983A (en) * | 2012-08-09 | 2012-12-12 | 四川普瑞斯生物科技有限公司 | Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device |
| CN104815366A (en) * | 2015-05-29 | 2015-08-05 | 江苏康宝医疗器械有限公司 | Disposable automatic liquid-stopping infusion apparatus |
| CN205626634U (en) * | 2016-01-06 | 2016-10-12 | 德施普科技发展温州有限公司 | End liquid ware |
Also Published As
| Publication number | Publication date |
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| CN105727393A (en) | 2016-07-06 |
| CN105561448A (en) | 2016-05-11 |
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