CN106310406B - A kind of anti-backflow urine storage device - Google Patents
A kind of anti-backflow urine storage device Download PDFInfo
- Publication number
- CN106310406B CN106310406B CN201610794285.XA CN201610794285A CN106310406B CN 106310406 B CN106310406 B CN 106310406B CN 201610794285 A CN201610794285 A CN 201610794285A CN 106310406 B CN106310406 B CN 106310406B
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- China
- Prior art keywords
- check valve
- urine
- urinal
- temporary storage
- catheter
- 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.)
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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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/70—Gravity drainage systems
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/69—Drainage containers not being adapted for subjection to vacuum, e.g. bags
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0496—Urine
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
Abstract
The invention discloses a kind of anti-backflow urine storage devices, the catheter is equipped with the temporary storage part for keeping in urine close to the position of urine collector, the temporary storage part is equipped with the first check valve close to one end of urine collector, the opposite other end is equipped with the second check valve, the pressure structure includes air bag, third check valve and the 4th check valve, one end of the air bag is fixedly connected with temporary storage part, and it is connected to temporary storage part inside, the third check valve is arranged on the position that air bag is connected with temporary storage part, the air bag offers blow vent backwards to one end of temporary storage part, 4th check valve is arranged in blow vent.The anti-backflow urine storage device of the present invention, passes through the setting of four check valves, so that it may effectively to prevent from flowing backwards, and pass through the setting of pressure structure and temporary storage part, so that it may which patient can preferably urinate for the effect that human bladder is realized with cooperation.
Description
Technical field
The present invention relates to a kind of medical instrument, more particularly to a kind of anti-backflow urine storage device.
Background technology
Existing patient in hospital needs urethral drainage urine to urinal, and existing catheter length is longer, and patient goes out for a stroll
When, when portable urinal, catheter is longer, can be on the ground, and in addition when portable urinal, urinal height is higher than urethral orifice, holds
Easily cause urine reflux, there is infection risk.
If directly preventing urine from flowing backwards to adding a check valve on catheter, due to existing non-return valve operational
Principle be all realized by the pressure difference at valve both ends, thus when the height of urinal be higher than urine collector height when, such as
This will occur check valve both ends pressure difference it is too small and the problem of check valve can not be opened, urine endo-urethral in this way cannot
It is enough to be transported to well in urinal.
Invention content
Be not in the anti-down of urine refluence in view of the deficiencies of the prior art, the present invention intends to provide a kind of
Flow urine storage device.
To achieve the above object, the present invention provides following technical solutions：A kind of anti-backflow urine storage device, including collection urine
Chamber, catheter, urinal and by urine collector be fixed to human body on fixed structure, the urine collector and urinal pass through catheter
Connection, and be connected respectively with the both ends of catheter, it is characterised in that：The catheter is equipped with close to the position of urine collector and uses
In the temporary storage part of temporary urine, the temporary storage part is equipped with the first check valve close to one end of urine collector, and the opposite other end is equipped with
Second check valve, wherein urine are flowed by the first check valve in temporary storage part from urine collector, are flowed through using the second check valve
Catheter enters in urinal, and the side of the temporary storage part is equipped with pressure structure, and the pressure structure includes air bag, third list
To valve and the 4th check valve, one end of the air bag is fixedly connected with temporary storage part, and is connected to temporary storage part inside, the third list
It is arranged on the position that air bag is connected with temporary storage part to valve, the air bag offers blow vent backwards to one end of temporary storage part, institute
The 4th check valve is stated to be arranged in blow vent.
As a further improvement on the present invention, first check valve, the second check valve include in hollow cylindrical
Valve body and the flap being wholely set with valve body one end, are equipped with channel in the flap, the flap include setting interconnecting piece and
The opening and closing part being wholely set with interconnecting piece, the interconnecting piece are wholely set with valve body, opening and closing part setting interconnecting piece backwards
Valve body side, the channel sized are sequentially reduced from interconnecting piece to opening and closing part, and the opening and closing part is equipped with and is closed what channel was closed
Structure is closed, the closing structure is elastic component, and the elastic component is fixedly connected with the conduit wall of opening and closing part opposite sides, works as elastic component
When in normal condition, channel is closed.
As a further improvement on the present invention, the third check valve and the 4th check valve include cylindrical bottom
Seat and cover plate, the pedestal are arranged with air bag integrated, air hole are offered on the position in the center of circle of the pedestal, wherein on pedestal
Air hole be equipped with lozenges towards one end of air bag, the side of the cover plate is wedge shape, and the cover plate is embedded into air hole,
The inner wall of side and air hole fits, and is formed and is tightly connected.
As a further improvement on the present invention, the urinal is equipped with the prompt knot prompted after urinal has been expired
Structure, the prompting structure include sensor and the prompt component coupled with sensor, and the prompt component and sensor are respectively provided with
On urinal, after sensor sensing has been expired to urinal, prompt component is transmitted a signal to, component is prompted to send out prompt message.
As a further improvement on the present invention, the sensor include be arranged urinal bag it is internal and be in netted channel
With the Graphene powder being filled in channel, the prompt component includes the shell being fixed on urinal, is respectively provided with inside the shell
Driving circuit and vibrator, the Graphene powder and vibrator are electrically connected with driving circuit.
As a further improvement on the present invention, the vibrator includes that vibrating motor and bias are fixed on vibrating motor shaft
On vibrating disk, the body of the vibrating motor is fixed inside the shell, and is electrically connected with driving circuit.
As a further improvement on the present invention, the driving circuit includes capacitance, switching tube and is removably attachable to outer
Button cell on shell, the control terminal of the switching tube are coupled to the anode that button cell is coupled to after Graphene powder, the control
The cathode for being coupled to button cell after being further coupled to capacitance, the first end of the switching tube is held to be coupled to the anode of button cell,
Second end is coupled to the cathode that button cell is coupled to after vibrator.
As a further improvement on the present invention, the shell is equipped with the silicon for being attached on human body backwards to the side of urinal
Sticker piece.
As a further improvement on the present invention, the middle part of the catheter is equipped with Storage Box, be equipped in the Storage Box around
Column, the catheter are wound on column.
Beneficial effects of the present invention pass through the setting of urine collector, catheter and urinal, so that it may effectively to realize patient
Urine collected from urethra, the effect being then stored into urinal, and by the setting of the first check valve and the second check valve, just
It can effectively realize and avoid the problem that urine flows back to urine collector from urinal, and the setting for passing through temporary storage part, so that it may first will
Urine is kept in temporary storage part, and when temporary storage part is stored to certain urine, people can be by pressure structure by temporary storage part
Interior urine is expressed in urinal, and by the cooperation with the second check valve, avoid urinal it is higher than urine collector when, urine without
Method enters the problem in urinal.
Description of the drawings
Fig. 1 is the appearance assumption diagram of the anti-backflow urine storage device of the present invention；
Fig. 2 is the overall structure figure of the first check valve, the second check valve in Fig. 1；
Fig. 3 is the overall structure figure of third check valve, the 4th check valve in Fig. 1；
Fig. 4 is the circuit diagram of driving circuit.
Specific implementation mode
The present invention is described in further detail below in conjunction with the embodiment given by attached drawing.
Shown in 4, a kind of anti-backflow urine storage device of the present embodiment, including urine collector 1, catheter 2, urinal 3
And urine collector 1 is fixed to the fixed structure on human body, the urine collector 1 and urinal 3 are connected by catheter 2, and point
It is not connected with the both ends of catheter 2, it is characterised in that：The catheter 2 is equipped with close to the position of urine collector 1 for keeping in
The temporary storage part 21 of urine, the temporary storage part 21 are equipped with the first check valve 211 close to one end of urine collector 1, and the opposite other end is set
There is the second check valve 212, wherein urine is flowed by the first check valve 211 in temporary storage part 21 from urine collector 1, using second
Check valve 212 flows through catheter 2 and enters in urinal 3, and the side of the temporary storage part 21 is equipped with pressure structure 213, described to add
Laminated structure 213 includes air bag 2131, third check valve 2132 and the 4th check valve 2133, one end of the air bag 2131 with it is temporary
Portion 21 is fixedly connected, and is connected to 21 inside of temporary storage part, and the third check valve 2132 is arranged in air bag 2131 and temporary storage part 21
On the position being connected, the air bag 2131 offers blow vent 5, the 4th check valve 2133 backwards to one end of temporary storage part 21
It is arranged in blow vent 5, during patient urinates, urine can be entered by urethra in urine collector 1 first, then be passed through
Urine collector 1 enters in catheter 2, urine reach catheter 2 in when the first check valve 211 will open so that urine into
Enter into temporary storage part 21, if 3 height of urinal is less than the height of temporary storage part 21 at this time, then the second check valve 212 will be opened,
So that urine is flowed into urinal 3, if 3 height of urinal at this time be equal to or higher than temporary storage part 21 height when, just
Leading to 212 exit of the second check valve, there are urines, thus the second check valve 212 can not just be opened, and so only people be needed to use
Hand pinches air bag 2131, and third check valve 2132 will be opened, and the 4th check valve 2133 is closed, and air is sent to temporary storage part 21
It is interior, while the first check valve 211 may turn off, since air enters in temporary storage part 21, the pressure in temporary storage part 21 will wink
Between increase, the second check valve 212 will be rushed to open, and the urine in temporary storage part 21 will be punched into urinal, so be avoided
In the prior art, when 3 height of urinal is more than the height of urine collector 1, urine cannot be introduced into the problem in urinal 3,
In pass through the setting of third check valve 2132 and the 4th check valve 2133 here, so that it may to ensure that air only enters temporary storage part
In 21, so just coordinate the effect for realizing pressurization, the wherein fixed structure of the present embodiment and existing skill with air bag 2131 well
It is identical in art, thus repeat no more.
As a kind of improved specific implementation mode, first check valve 211, the second check valve 212 include in being in
The valve body 6 of hollow round column shape and the flap 7 being wholely set with 6 one end of valve body, the flap 7 is interior to be equipped with channel, and the flap 7 includes
The interconnecting piece 71 of setting and the opening and closing part 72 being wholely set with interconnecting piece 71, the interconnecting piece 71 is wholely set with valve body 6, described
In interconnecting piece 71 backwards to valve body side, the channel sized is sequentially reduced the setting of opening and closing part 72 from interconnecting piece 71 to opening and closing part 72,
The opening and closing part 72 is equipped with the closing structure for closing channel, and the closing structure is elastic component, and the elastic component, which is fixed, to be connected
The conduit wall for connecing 72 opposite sides of opening and closing part, when elastic component is in normal condition, channel is closed, and passes through valve body 6 and flap 7
Setting, so that it may effectively to utilize the folding of the opening and closing part 72 of flap 7 to act on, the effect of one-way flow effectively realized
, the problem of urinal 3 makes urine flow backwards higher than urine collector 1 in the prior art is avoided, wherein elastic component is silicagel column here,
Elasticity is realized using the ductility of silica gel.
As a kind of improved specific implementation mode, 2132 and the 4th check valve 2133 of the third check valve includes equal
Cylindrical pedestal 8 and cover plate 9, the pedestal 8 are wholely set with air bag 2131, are opened on the position in the center of circle of the pedestal 8
Equipped with air hole 81, the wherein air hole 81 on pedestal 8 is equipped with lozenges, the side of the cover plate 9 towards one end of air bag 2131
Face is wedge shape, and the cover plate 9 is embedded into air hole 81, and side and the inner wall of air hole 81 fit, and is formed and is tightly connected, and is led to
Cross the setting of pedestal 8 and cover plate 9, so that it may to realize the effect of a folding valve body, and the setting for passing through lozenges, so that it may to have
The effect of one sealing of realization of effect, thus can effectively realize the one-way trip of air, wherein cover plate 9 here
It is connect by a connecting rod with pedestal 8 backwards to one end of air hole 81.
As a kind of improved specific implementation mode, the urinal 3 is carried equipped with what is prompted after urinal 3 has been expired
Show that structure 31, the prompting structure 31 include sensor 311 and the prompt component 312 with the coupling of sensor 311, the prompt group
Part 312 and sensor 311 are arranged on urinal 3, after sensor 311 senses that urinal 3 has been expired, transmit a signal to prompt
Component 312 prompts component 312 to send out prompt message, passes through the setting of sensor 311, so that it may effectively to detect that urinal 3 is
It is no full, and by prompting the setting of component 312, so that it may to remind patient will be in urinal 3 in time when urinal 3 has been expired
Urine discharges.
As a kind of improved specific implementation mode, the sensor 311 include be arranged 3 bags of urinal it is internal and be in net
The channel of shape and the Graphene powder being filled in channel, the prompt component 312 include the shell 3121 being fixed on urinal 3,
The driving circuit 3122 and vibrator 3123 being arranged in shell 3121, the Graphene powder and vibrator 3123 with driving
Circuit 3122 is electrically connected, and Graphene powder is formed conductive channel one by one in channel, when urinal 3 has been expired, urinal 3
It will expand, the extruding then channel will be stretched, thus conductive channel will become smaller, thus the flow-thru electrode of entire Graphene powder
Resistance will become larger, and thus play one and sense the effect whether urinal 3 has expired well, have height by Graphene powder
Conductivity, thus with can make sensor accuracy higher herein.
As a kind of improved specific implementation mode, the vibrator 3123 includes that vibrating motor and bias are fixed on vibration
The body of vibrating disk on machine shaft, the vibrating motor is fixed in shell 3121, and is electrically connected with driving circuit 3122,
By the setting of vibrating motor and vibrating disk, it is fixed on human body since urinal 3 is substantially, thus can be effectively real
The effect of existing vibrating alert.
As a kind of improved specific implementation mode, the driving circuit 3122 includes capacitance 31222, switching tube 31223
With the button cell 31221 being removably attachable on shell 3121, the control terminal of the switching tube 31223 is coupled to graphene
The anode of button cell 31221 is coupled to after powder, which is coupled to button cell 31221 after being further coupled to capacitance 31222
Cathode, the first end of the switching tube 31223 is coupled to the anode of button cell 31221, and second end is coupled to vibrator
The cathode of button cell 31221 is coupled to after 3123, the characteristic that so condition of switching tube 31223 can be utilized to be connected is realized
When sensor resistance changes to a certain degree, vibrator 3123 vibrate effect, effectively realize urinal 3 expired with
The effect reminded afterwards.
As a kind of improved specific implementation mode, the shell 3121 is equipped with backwards to the side of urinal 3 for being attached to people
Silica gel patch 31211 on body, passes through the setting of silica gel patch 31211, so that it may be fixed shell 3121 with effectively realizing
Onto human body, and then realize effect urinal 3 being fixed on human body.
As a kind of improved specific implementation mode, the middle part of the catheter 2 is equipped with Storage Box 22, the Storage Box 22
Interior to be equipped with around column, the catheter 2 is wound on column, passes through the setting of Storage Box 22, so that it may effectively to realize catheter 2
The effect being collected into Storage Box 22, avoids that catheter 2 is long in the prior art leads to the problem of.
In conclusion the anti-backflow urine storage device of the present invention, passes through setting for the first check valve 211 and the second check valve 212
Set, so that it may the problem of effectively to prevent urine from flowing backwards, and pass through the setting of pressure structure 213, so that it may with temporary storage part 21 and
The cooperation of second check valve 212 realizes that urine can be input to the effect in urinal 3 when urinal 3 is higher than urine collector 1.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of anti-backflow urine storage device, including urine collector (1), catheter (2), urinal (3) and urine collector (1) is fixed to
Fixed structure on human body, the urine collector (1) and urinal (3) by catheter (2) connect, and respectively with catheter (2)
Both ends be connected, it is characterised in that：The catheter (2) is equipped with close to the position of urine collector (1) for keeping in urine
Temporary storage part (21), the temporary storage part (21) are equipped with the first check valve (211), the opposite other end close to one end of urine collector (1)
Equipped with the second check valve (212), wherein urine is flowed by the first check valve (211) in temporary storage part (21) from urine collector (1),
Catheter (2) is flowed through using the second check valve (212) to enter in urinal (3), the side of the temporary storage part (21) is equipped with
Pressure structure (213), the pressure structure (213) include air bag (2131), third check valve (2132) and the 4th check valve
(2133), one end of the air bag (2131) is fixedly connected with temporary storage part (21), and be connected to inside temporary storage part (21), described the
Three check valves (2132) are arranged on the position that air bag (2131) is connected with temporary storage part (21), and the air bag (2131) is backwards to temporarily
The one end for depositing portion (21) offers blow vent (5), and the 4th check valve (2133) setting is in blow vent (5).
2. anti-backflow urine storage device according to claim 1, it is characterised in that：First check valve (211), the second list
The flap (7) for including the valve body (6) in hollow cylindrical to valve (212) and being wholely set with valve body (6) one end, the flap
(7) channel is equipped in, the flap (7) includes the interconnecting piece (71) being arranged and the opening and closing part being wholely set with interconnecting piece (71)
(72), the interconnecting piece (71) is wholely set with valve body (6), and opening and closing part (72) setting is in interconnecting piece (71) backwards to valve body one
Side, the channel sized are sequentially reduced from interconnecting piece (71) to opening and closing part (72), and the opening and closing part (72) is equipped with and closes channel
The closing structure closed, the closing structure are elastic component, and the elastic component is fixedly connected with the channel of opening and closing part (72) opposite sides
Wall, when elastic component is in normal condition, channel is closed.
3. anti-backflow urine storage device according to claim 1 or 2, it is characterised in that：The third check valve (2132) and
4th check valve (2133) includes cylindrical pedestal (8) and cover plate (9), the pedestal (8) and air bag (2131) one
Body is arranged, and air hole (81), air hole (81) court wherein on pedestal (8) are offered on the position in the center of circle of the pedestal (8)
It is equipped with lozenges to one end of air bag (2131), the side of the cover plate (9) is wedge shape, and the cover plate (9) is embedded into air hole
(81) in, the inner wall of side and air hole (81) fits, and is formed and is tightly connected.
4. anti-backflow urine storage device according to claim 1 or 2, it is characterised in that：The urinal (3), which is equipped with, works as urinal
(3) prompting structure (31) prompted after having expired, the prompting structure (31) includes sensor (311) and and sensor
(311) the prompt component (312) coupled, the prompt component (312) and sensor (311) are arranged on urinal (3), work as biography
After sensor (311) senses that urinal (3) has been expired, prompt component (312) is transmitted a signal to, component (312) is prompted to send out prompt
Information.
5. anti-backflow urine storage device according to claim 4, it is characterised in that：The sensor (311) includes that setting exists
Urinal (3) bag it is internal and in netted channel and the Graphene powder being filled in channel, the prompt component (312) includes admittedly
The shell (3121) that is scheduled on urinal (3), the driving circuit (3122) being arranged in shell (3121) and vibrator (3123),
The Graphene powder and vibrator (3123) are electrically connected with driving circuit (3122).
6. anti-backflow urine storage device according to claim 5, it is characterised in that：The vibrator (3123) includes vibration electricity
Machine and the eccentric vibrating disk being fixed in vibrating motor shaft, the body of the vibrating motor are fixed in shell (3121), and
It is electrically connected with driving circuit (3122).
7. anti-backflow urine storage device according to claim 5, it is characterised in that：The driving circuit (3122) includes capacitance
(31222), switching tube (31223) and the button cell (31221) being removably attachable on shell (3121), the switching tube
(31223) control terminal is coupled to the anode that button cell (31221) are coupled to after Graphene powder, which is further coupled to electricity
The cathode of button cell (31221) is coupled to after appearance (31222), the first end of the switching tube (31223) is coupled to button electricity
The anode in pond (31221), second end are coupled to the cathode that button cell (31221) are coupled to after vibrator (3123).
8. anti-backflow urine storage device according to claim 5, it is characterised in that：The shell (3121) is backwards to urinal (3)
Side be equipped with silica gel patch (31211) for being attached on human body.
9. anti-backflow urine storage device according to claim 1 or 2, it is characterised in that：The middle part of the catheter (2) is equipped with
Storage Box (22), the Storage Box (22) is interior to be equipped with around column, and the catheter (2) is wound on column.
10. anti-backflow urine storage device according to claim 3, it is characterised in that：The middle part of the catheter (2) is equipped with storage
Box (22) is deposited, is equipped with around column in the Storage Box (22), the catheter (2) is wound on column.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016105128922 | 2016-06-28 | ||
| CN201610512892 | 2016-06-28 |
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| Publication Number | Publication Date |
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| CN106310406A CN106310406A (en) | 2017-01-11 |
| CN106310406B true CN106310406B (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610794285.XA Active CN106310406B (en) | 2016-06-28 | 2016-08-31 | A kind of anti-backflow urine storage device |
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| CN (1) | CN106310406B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200662B (en) * | 2019-06-25 | 2022-10-11 | 刘力君 | Nephrology department catheterization sampling device |
| CN110237341A (en) * | 2019-07-20 | 2019-09-17 | 孙悦 | A kind of convalescence device postoperative for foreskin |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084593A (en) * | 1975-04-15 | 1978-04-18 | Jarund Devello Ab | Bladder training apparatus |
| US20060189962A1 (en) * | 2005-02-23 | 2006-08-24 | Burtoft Bonnie B | Urinary Drainage Bag for Urinary Diversion to the Bellie Button |
| CN201073369Y (en) * | 2007-09-04 | 2008-06-18 | 潘丽 | Multipurpose negative-pressure urine catheter |
| CN202961471U (en) * | 2012-11-12 | 2013-06-05 | 程秀巧 | Urethral catheter capable of preventing urine from reflowing |
| CN103055361B (en) * | 2013-01-05 | 2015-06-17 | 苏州达维生物医药有限公司 | Urethral catheterization device and abdominal pressure monitoring system |
| CN206342728U (en) * | 2016-06-28 | 2017-07-21 | 温州市人民医院 | A kind of anti-backflow urine storage device |
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