CN203090195U - Catheter preventing liquid from flowing back - Google Patents

Catheter preventing liquid from flowing back Download PDF

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Publication number
CN203090195U
CN203090195U CN 201320003559 CN201320003559U CN203090195U CN 203090195 U CN203090195 U CN 203090195U CN 201320003559 CN201320003559 CN 201320003559 CN 201320003559 U CN201320003559 U CN 201320003559U CN 203090195 U CN203090195 U CN 203090195U
Authority
CN
China
Prior art keywords
check valve
passage
conduit
liquid
prevents
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
Application number
CN 201320003559
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Chinese (zh)
Inventor
黄锦平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHONGSHAN WORLD MEDICAL INSTRUMENTS CO Ltd
Original Assignee
ZHONGSHAN WORLD MEDICAL INSTRUMENTS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHONGSHAN WORLD MEDICAL INSTRUMENTS CO Ltd filed Critical ZHONGSHAN WORLD MEDICAL INSTRUMENTS CO Ltd
Priority to CN 201320003559 priority Critical patent/CN203090195U/en
Application granted granted Critical
Publication of CN203090195U publication Critical patent/CN203090195U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a catheter preventing liquid from flowing back. The catheter comprises a catheter body, at least one channel is arranged on the catheter body, an opening communicated with the channel is formed at one end of the catheter body, a conical opening communicated with the channel is formed at the other end of the catheter body, and a check valve is arranged in the conical opening. According to the catheter preventing liquid from flowing back, the check valve comprises a valve seat, a flow channel is arranged in the valve seat, an elastic membrane is arranged at one end of the flow channel, an arc-shaped groove is formed in the elastic membrane, the arc-shaped groove divides the elastic membrane into an annular edge and a center membrane capable of closing the flow channel, and the annular edge is fixed in the valve seat through a clamp ring. The catheter overcomes the defects in the prior art and is simple in structure and capable of preventing backflow effectively.

Description

A kind of conduit that prevents that liquid from backflowing
Technical field
This utility model relates to a kind of medical transfusion catheter, more specifically a kind of conduit that prevents that liquid from backflowing.
Background technology
Medical apparatus and instruments is particular about effectiveness and safety, special safety-sensitive.Some catheter needs to inject medicinal liquid or nutritional solution in use in patient's body; Maybe need in the body to external ejected matter; Or injection and discharge have concurrently.As tube feeding is to inject the nutrition material by tract in body; Catheter, sputum aspirator tube are by draining tract to external discharge urine or sputum.Existing these products may be because of causing the adverse current phenomenon of drain accidentally, thereby cause medical-risk.Existing catheter but can't prevent the generation of adverse current phenomenon, so that existing catheter awaits is further perfect.
The utility model content
The purpose of this utility model is in order to overcome weak point of the prior art, to provide a kind of simple in structure, can effectively preventing the conduit that backflows.
In order to achieve the above object, this utility model adopts following scheme:
A kind of conduit that prevents that liquid from backflowing, comprise body, on body, be provided with at least one passage, be provided with opening with described channel connection at described body one end, on the body other end, be provided with one with the tapered opening of described channel connection, in described tapered opening, be provided with check valve.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said check valve comprises valve seat, in valve seat, be provided with runner, on described runner one end, be provided with a flexible sheet, on described flexible sheet, be provided with arcuate groove, described arcuate groove is divided into the center diaphragm that an annular edge and can be closed described runner with flexible sheet, and described annular edge is fixed in the valve seat by a hold-down ring.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said check valve comprise the cone valve that is arranged in the described tapered opening and described cone valve are limited in the interior catch of described conical outlet.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said catch are a circular PVC sheet, are provided with cross link stopper on described circular PVC sheet, are provided with pod apertures around described cross link stopper.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said passage is one.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said passage is two, comprise a drain passage and a filling channel, on described body one end, be provided with sacculus, described sacculus is connected with described filling channel, be provided with the check valve that to close described filling channel at the described body other end, on the port of export of described drain passage, be provided with the check valve of anti-backflow.
Aforesaid a kind of conduit that prevents that liquid from backflowing, wherein said passage is three, comprise a drain passage, one filling channel and an irrigation channel, be provided with sacculus on described body one end, described sacculus is connected with described filling channel, is provided with the check valve that can close described filling channel at the described body other end, on the port of export of described drain passage, be provided with the check valve of anti-backflow, on described irrigation channel one end, be provided with check valve.
In sum, this utility model with respect to its beneficial effect of prior art is:
Be provided with check valve between two openings in this utility model in the passage of conduit, can utilize the inside and outside pressure difference of human body to control the opening and closing of check valve, prevent that effectively the phenomenon of backflowing from taking place, thereby reduced medical-risk, bring guarantee for the safety of user.
Description of drawings
Fig. 1 is one of sketch map of the present utility model;
Sketch map when Fig. 2 is this utility model closed check valve;
Sketch map when Fig. 3 opens for this utility model check valve;
Fig. 4 is the sketch map of flexible sheet;
Fig. 5 is two of a sketch map of the present utility model;
Fig. 6 is three of a sketch map of the present utility model;
Fig. 7 is the sketch map of catch;
Fig. 8 is four of a sketch map of the present utility model;
Fig. 9 is five of a sketch map of the present utility model.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment this utility model is further described:
A kind of conduit that prevents that liquid from backflowing shown in Fig. 1 to 9, comprise body 1, on body 1, be provided with at least one passage 2, on described body 1 one ends, be provided with the opening 3 that is communicated with described passage 2, wherein said opening 3 can be arranged on the end of body 1 one ends as shown in Figure 9, perhaps be arranged on the tube wall of body 1 one ends, as shown in Figure 1; On body 1 other end, be provided with a tapered opening 7 that is communicated with described passage 2, be provided with check valve 4 in described tapered opening 7.
Check valve 4 described in this utility model can have multiple mode, shown in Fig. 2 to 4, first kind of embodiment for this utility model check valve 4, it comprises valve seat 41, in valve seat 41, be provided with runner 42, on described runner 42 1 ends, be provided with a flexible sheet 43, on described flexible sheet 43, be provided with arcuate groove 44, described arcuate groove 44 is divided into the center diaphragm 432 that an annular edge 431 and can be closed described runner 42 with flexible sheet 43, and described annular edge 431 is fixed in the valve seat 41 by a hold-down ring 45.
The another kind of embodiment of this utility model check valve 4, shown in Fig. 6 and 7, described check valve 4 comprises the cone valve 5 that is arranged in the described tapered opening and described cone valve 5 is limited in the interior catch 6 of described conical outlet.Described catch 6 is a circular PVC sheet, is provided with cross link stopper 61 on described circular PVC sheet, is provided with pod apertures 62 around described cross link stopper 61.
The anti-conduit that backflows of the present utility model, multiple mode can be arranged, first kind of embodiment of the anti-conduit that backflows as shown in Figure 1 in this utility model, the conduit that should anti-backflow is a kind of stomach tube, in body 1, be provided with a drainage channel 2, offer an opening 3 at described passage 2 one ends, the other end is provided with a cone-shaped interface, and described cone-shaped interface place is provided with check valve 4.Described check valve 4 makes by drain liquid and flows out to opening 3 directions from cone-shaped interface 4 only, can 4 directions not flow backwards from opening 3 along cone-shaped interface.
The anti-conduit that backflows in the present embodiment can also be used as sputum aspirator tube or drainage tube, wherein the setting of check valve 4 is opposite with direction in the stomach tube, check valve 4 just can make by the sputum of drain or other drain liquid and flow out to the cone-shaped interface direction from opening 3 only like this, can 3 directions not flow backwards from cone-shaped interface along opening.
Second kind of embodiment of the anti-conduit that backflows as shown in Figure 5 in this utility model, the conduit that should anti-backflow is a kind of double lumen catheter, in body 1, be provided with two passages, comprise a drain passage 21 and a filling channel 22, on described body 1 one ends, be provided with sacculus 8, described sacculus 8 is connected with described filling channel 22, be provided with the check valve 4 that to close described filling channel 22 at described body 1 other end, on described drain passage 21 1 ends, be provided with scavenge port, the other end is provided with the drainage cone-shaped interface, on the port of export of described drain passage 21, just draining the check valve 4 that the cone-shaped interface place is provided with anti-backflow.Described check valve 4 flows out urine only to draining the cone-shaped interface direction from scavenge port, can not flow backwards to the scavenge port direction from draining cone-shaped interface.
The third embodiment of the anti-conduit that backflows as shown in Figure 8 in this utility model, the conduit that should anti-backflow is a kind of three-cavity catheter, in body 1, be provided with three passages and comprise a drain passage 21, one filling channel 22 and an irrigation channel 23, on described body 1 one ends, be provided with sacculus 8, described sacculus 8 is connected with described filling channel 22, be provided with the check valve 4 that to close described filling channel 22 at described body 1 other end, on the port of export of described drain passage 21, be provided with the check valve 4 of anti-backflow, on described irrigation channel 23 1 ends, be provided with check valve 4.Described check valve 4 flows out the urine in the atria only along draining the cone-shaped interface direction from scavenge port, can not flow backwards along the scavenge port direction from draining cone-shaped interface.

Claims (6)

1. conduit that prevents that liquid from backflowing, comprise that body (1) is characterized in that, on body (1), be provided with at least one passage (2), be provided with the opening (3) that is communicated with described passage (2) at described body (1) one end, on body (1) other end, be provided with a tapered opening (7) that is communicated with described passage (2), in described tapered opening (7), be provided with check valve (4); Described check valve (4) comprises valve seat (41), in valve seat (41), be provided with runner (42), on described runner (42) one ends, be provided with a flexible sheet (43), on described flexible sheet (43), be provided with arcuate groove (44), described arcuate groove (44) is divided into the center diaphragm (432) that an annular edge (431) and can be closed described runner (42) with flexible sheet (43), and described annular edge (431) is fixed in the valve seat (41) by a hold-down ring (45).
2. a kind of conduit that prevents that liquid from backflowing according to claim 1, it is characterized in that described check valve (4) comprises the cone valve (5) that is arranged in the described tapered opening and described cone valve (5) is limited in the interior catch (6) of described conical outlet.
3. a kind of conduit that prevents that liquid from backflowing according to claim 3, it is characterized in that described catch (6) is a circular PVC sheet, on described circular PVC sheet, be provided with cross link stopper (61), be provided with pod apertures (62) on every side at described cross link stopper (61).
4. a kind of conduit that prevents that liquid from backflowing according to claim 1 is characterized in that described passage (2) is one.
5. a kind of conduit that prevents that liquid from backflowing according to claim 1, it is characterized in that described passage (2) is two, comprise a drain passage (21) and a filling channel (22), on described body (1) one end, be provided with sacculus (8), described sacculus (8) is connected with described filling channel (22), be provided with the check valve (4) that to close described filling channel (22) at described body (1) other end, on the port of export of described drain passage (21), be provided with the check valve (4) of anti-backflow.
6. a kind of conduit that prevents that liquid from backflowing according to claim 1, it is characterized in that described passage (2) is three, comprise a drain passage (21), one filling channel (22) and an irrigation channel (23), on described body (1) one end, be provided with sacculus (8), described sacculus (8) is connected with described filling channel (22), be provided with the check valve (4) that to close described filling channel (22) at described body (1) other end, on the port of export of described drain passage (21), be provided with the check valve (4) of anti-backflow, on described irrigation channel (23) one ends, be provided with check valve (4).
CN 201320003559 2013-01-05 2013-01-05 Catheter preventing liquid from flowing back Expired - Fee Related CN203090195U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320003559 CN203090195U (en) 2013-01-05 2013-01-05 Catheter preventing liquid from flowing back

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320003559 CN203090195U (en) 2013-01-05 2013-01-05 Catheter preventing liquid from flowing back

Publications (1)

Publication Number Publication Date
CN203090195U true CN203090195U (en) 2013-07-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320003559 Expired - Fee Related CN203090195U (en) 2013-01-05 2013-01-05 Catheter preventing liquid from flowing back

Country Status (1)

Country Link
CN (1) CN203090195U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106691863A (en) * 2016-12-09 2017-05-24 成都迅德科技有限公司 Nasal feeding tube with elastic conical sealing opening in gastric end
CN106963526A (en) * 2017-04-25 2017-07-21 天津大学 A kind of blocked flake type anti-reflux support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106691863A (en) * 2016-12-09 2017-05-24 成都迅德科技有限公司 Nasal feeding tube with elastic conical sealing opening in gastric end
CN106963526A (en) * 2017-04-25 2017-07-21 天津大学 A kind of blocked flake type anti-reflux support

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130731

Termination date: 20160105