CN109602969A - A kind of adjustable bladder urethra joint flusher - Google Patents
A kind of adjustable bladder urethra joint flusher Download PDFInfo
- Publication number
- CN109602969A CN109602969A CN201811491570.XA CN201811491570A CN109602969A CN 109602969 A CN109602969 A CN 109602969A CN 201811491570 A CN201811491570 A CN 201811491570A CN 109602969 A CN109602969 A CN 109602969A
- Authority
- CN
- China
- Prior art keywords
- urethra
- pipe
- flusher
- interlocking bar
- inner tube
- 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
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
- A61M3/0283—Cannula; Nozzles; Tips; their connection means with at least two inner passageways, a first one for irrigating and a second for evacuating
-
- 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
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0233—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
- A61M2210/1085—Bladder
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
- A61M2210/1089—Urethra
Abstract
The present invention relates to a kind of adjustable bladder urethras to combine flusher, including flushing pipe, flushing pipe is by outer tube, inner tube and rotation pipe composition, it is linked together between inner tube and outer tube by urethra flushing pipe, rotation pipe is rotatably threaded through in inner tube, the side wall of rotation pipe is provided with the side opening that can be docked with urethra flushing pipe, its axis is provided with interlocking bar in rotation pipe, interlocking bar is supported by two bearings, the lower end of interlocking bar is arranged with active twisted blade, the upper end of interlocking bar, which stretches out inner tube and is arranged with extravasated blood, breaks up twisted blade, the tail end of rotation pipe is provided with the docking casing for connecting syringe, tail ring set is arranged with outside docking casing, the outer wall of docking casing is arranged symmetrically, and there are two spacing heads, corresponding two spacing heads in the inside of tail ring set are respectively arranged with sliding slot.Flusher of the invention can fast and efficiently can be removed the blood clot in patient's bladder by non-operative treatment, can also be rinsed to urethra while washed bladder, be prevented urinary tract infections.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of adjustable bladder urethra joint flusher.
Background technique
Urinary system injury or tumor patient, often cause bleeding, and the blood clot or necrotic tissue volume that are consequently formed are larger
Shi Buyi is excreted, and causes urinary obstruction, causes great pain to patient.At present clinically mostly use ordinary urethral catheter into
Row bladder irrigation, such method easily cause urethral catheterization pipe choking, cause artificially to block, making patients' pain, and for old body
Weak patient, easily induction cardiocerebrovasculaevents events, threat to life, and flushing process is time-consuming, laborious, inefficiency.Using conservative
Treatment is difficult to thoroughly remove blood clot in bladder or necrotic tissue, and the method for using operation removes clot or necrotic tissue,
The pain for not only increasing patient, but will cause bigger wound to patient, increase financial burden.And for advanced age or weak trouble
Person, operation then become taboo, can only be treated using the method for No operation, effect is very poor.Also, after various operation on urethra or
Preserving time catheter patient, is easy to happen catheter and urethra bonds, it is difficult to extract out, urinary tract infection also easily occurs.Especially
Place that catheter often will cause hematocele in urethra, sepage, secretion are difficult to be discharged after operation on urethra, severe one causes operation to be lost
It loses.Some medical personnels are to prevent catheter and urethra from bonding and often replacing catheter, to prevent infection in common urethral catheterization
Parallel seam is tied up a tubule and is rinsed on pipe.It is not only cumbersome in this way, but also the work load of medical personnel is increased,
Also increase the financial burden of patient.
Summary of the invention
The purpose of the present invention is provide a kind of adjustable bladder urethra joint punching to solve disadvantage existing in the prior art
Device is washed, can fast and efficiently be removed the blood clot in patient's bladder by non-operative treatment, while washed bladder also
Urethra can be rinsed, prevent urinary tract infections.
The present invention is in order to solve the above technical problems, provided technical solution is: a kind of adjustable bladder urethra joint punching
Device, including flushing pipe are washed, flushing pipe is made of outer tube, inner tube and rotation pipe, by uniform from top to bottom between inner tube and outer tube
Multiple urethra flushing pipes of distribution link together, and it is outer to internal tube and outer tube that connection is distinguished at the both ends of urethra flushing pipe
Portion, the rotation pipe are rotatably threaded through in inner tube, and the side wall for rotating pipe is provided with the side opening that can be docked with urethra flushing pipe, rotation
The lumen of tube is flushing liquor feed pathway, and the annular chamber between inner tube and outer tube is flushing liquor apocenosis passage, the rotation pipe
Middle that its axis is provided with interlocking bar, interlocking bar is supported by two bearings, and the outer ring of bearing passes through support bar and rotation
Pipe is fixedly connected, and interlocking bar passes through the inner ring of bearing and is fixedly connected with inner ring, and the lower end of the interlocking bar is arranged with actively
The upper end of twisted blade, interlocking bar, which stretches out inner tube and is arranged with extravasated blood, breaks up twisted blade, and the tail end of the rotation pipe is provided with
For connecting the docking casing of syringe, the annular chamber tail end between inner tube and outer tube is closed by end plate, docks casing housing
Equipped with tail ring set, tail ring set is fixed on end plate, and is docked casing and stretched out the setting of tail ring set, the outer wall of the docking casing
It is symmetrical arranged there are two spacing head, corresponding two spacing heads in the inside of tail ring set are respectively arranged with sliding slot, dock two of casing
Spacing head is inserted into two sliding slots setting of tail ring set respectively.
As a kind of advanced optimizing for present invention adjustable bladder urethra joint flusher: the active twisted blade and
The direction of twist for having extravasated blood to break up twisted blade is opposite.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the head end of the outer tube has
Concave the crimping of extension.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the tail end side wall setting of outer tube
There is leakage fluid dram.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the lower end cap of the interlocking bar
Equipped with N number of active twisted blade, the odd number that N is >=3.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the active twisted blade is
The biggish wealthy palm twisted blade of area.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the upper end cap of the interlocking bar
Twisted blade, the odd number that M is >=5 are broken up equipped with M extravasated blood.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the extravasated blood breaks up distortion leaf
Piece is the willow leaf twisted blade of elongate form.
As a kind of advanced optimizing for adjustable bladder urethra joint flusher of the present invention: the extravasated blood breaks up distortion leaf
Piece outer rim has the cutting edge for cutting clot.
Beneficial effect
Flusher of the invention can fast and efficiently can be removed the blood clot in patient's bladder by non-operative treatment, bed
Side can be operated, and be not required to move patient or put special posture, reduce the bleeding chance again of patient, and to patient without
Obvious damage, hence it is evident that the pain and financial burden for mitigating patient are equally applicable to advanced age or the poor patient of constitution, also, logical
The position for overregulating rotation pipe, can also be rinsed urethra while washed bladder.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of present invention joint flusher；
Fig. 2 is the flushing pipe head end partial structural diagram of present invention joint flusher；
Fig. 3 is the structural schematic diagram of active twisted blade in present invention joint flusher；
Fig. 4 is the structural schematic diagram that extravasated blood breaks up twisted blade in present invention joint flusher；
Fig. 5 is the connection relationship diagram I that casing and tail ring set are docked in present invention joint flusher；
Fig. 6 is the connection relationship diagram II that casing and tail ring set are docked in present invention joint flusher；
Fig. 7 is the connection relationship diagram III that casing and tail ring set are docked in present invention joint flusher；
Fig. 8 is present invention joint flusher flushing liquor flow direction schematic diagram during single bladder irrigation；
Fig. 9 is present invention joint flusher flushing liquor flow direction schematic diagram in bladder-urethra joint flushing process；
Marked in the figure: 1, outer tube, 2, inner tube, 3, rotation pipe, 4, interlocking bar, 5, active twisted blade, 6, extravasated blood break up distortion leaf
Piece, 7, crimping, 8, urethra flushing pipe, 9, docking casing, 10, tail ring set, 11, spacing head, 12, sliding slot, 13, side opening.
Specific embodiment
With reference to the accompanying drawing and the preferred embodiment specific embodiment that the present invention will be described in detail.
A kind of adjustable bladder urethra combines flusher, including flushing pipe as shown in Figure 1:, and flushing pipe is by outer tube 1, inner tube 2
It is formed with rotation pipe 3, is connected to one by equally distributed multiple urethra flushing pipes 8 from top to bottom between inner tube 2 and outer tube 1
It rises, the both ends of urethra flushing pipe 8 are distinguished connection to 2 inside of inner tube and the outside of outer tube 1, the rotation pipe 3 and rotatably worn
In inner tube 2, the side wall of rotation pipe 3 is provided with the side opening 13 that can be docked with urethra flushing pipe 8, and the lumen of rotation pipe 3 is to rinse
Liquid feed pathway, the annular chamber between inner tube 2 and outer tube 1 are flushing liquor apocenosis passage, logical by the flushing liquor feed liquor for rotating pipe 3
Road continues to inject flushing liquor into bladder, and flushing liquor can flow through rushing between inner tube 2 and outer tube 1 after cystanastrophe rolling stops
The discharge of washing lotion apocenosis passage, achievees the effect that self-loopa.Its axis is provided with interlocking bar 4 in rotation pipe 3, interlocking bar 4 passes through
Two bearings are supported, and the outer ring of bearing is fixedly connected by support bar with rotation pipe 3, and interlocking bar 4 passes through the inner ring of bearing
And it is fixedly connected with inner ring, the lower end of the interlocking bar 4 is arranged with active twisted blade 5, and inner tube is stretched out in the upper end of interlocking bar 4
2 and be arranged with extravasated blood and break up twisted blade 6, active twisted blade 5 and have extravasated blood break up twisted blade 6 direction of twist on the contrary,
The purpose being arranged in this way is to make the flushing liquor of reflux when flowing through extravasated blood and breaing up twisted blade 6, and it is same to break up twisted blade 6 to extravasated blood
Sample generates rotary thrust, so that extravasated blood is broken up twisted blade 6 with stronger rotates effe, the effect of active twisted blade 5 is to use
In driving interlocking bar 4 to be rotated, when flushing liquor flows in the lumen of inner tube 2, the rotation of active twisted blade 5 will drive, into
And interlocking bar 4 is driven to rotate, the effect that extravasated blood breaks up twisted blade 6 is that the clot that will be carried secretly in flushing liquor is broken up, and is convenient for clot
It is discharged from flushing liquor apocenosis passage, interlocking bar 4 will drive extravasated blood and break up twisted blade 6 while rotation to be rotated, and blood is made
Block is broken when flowing through flushing liquor apocenosis passage mouth, can smoothly enter into flushing liquor apocenosis passage, bladder is finally discharged.
As shown in Figure 2: in the traveling process of urethra, head end causes to damage flushing pipe to urethral canal inner wall in order to prevent,
The crimping 7 for the extension that concaves is set in the head end of outer tube 1, which is not only avoided that the loss to urethra, additionally it is possible to by extravasated blood
Twisted blade 6 is broken up partially hide.
It is as shown in Figure 3: in order to make active twisted blade 5 generate biggish rotary force, to be arranged with 5 in the lower end of interlocking bar 4
A active twisted blade 5, active twisted blade 5 are the biggish wealthy palm twisted blade of area, and wealthy palm twisted blade refers to blade
Shape helps to create stronger rotation close to round or ellipse, the blade of this shape.
It is as shown in Figure 4: in order to make extravasated blood break up twisted blade 6 with preferably effect is smashed, in the upper end cap of interlocking bar 4
Twisted blade 6 is broken up equipped with 7 extravasated blood, extravasated blood breaks up the willow leaf twisted blade that twisted blade 6 is elongate form, and extravasated blood breaks up torsion
Bent 6 outer rim of blade has the cutting edge for cutting clot, and the willow leaf twisted blade 6 of elongate form helps to provide cutting frequency,
Intravesical clot can sufficiently be smashed.
As illustrated in figs. 5-7: the tail end of rotation pipe 3 is provided with the docking casing 9 for connecting syringe, inner tube 2 and outer tube 1
Between annular chamber tail end by end plate close, docking casing 9 outside be arranged with tail ring set 10, tail ring set 10 is fixed at end plate
On, and dock casing 9 and stretch out the setting of tail ring set 10, the outer wall of the docking casing 9 is arranged symmetrically, and there are two spacing head 11, tail rings
Corresponding two spacing heads 11 in the inside of set 10 are respectively arranged with sliding slot 12, and two spacing heads 11 of docking casing 9 are inserted into tail respectively
Two sliding slots 12 of ring set 10 are arranged.Above structure can limit the slewing area of rotation pipe 3, make spacing head 11 in sliding slot 12
When both ends, corresponding is the side opening 13 and urethra that the side opening 13 of rotation pipe 3 docked with urethra flushing pipe 8 and rotated pipe 3
Flushing pipe 8 is staggered.
The application method that the present invention combines flusher is as follows:
1, single bladder irrigation
Before use, carrying out disinfection operation to bladder irrigator, rotation docking casing keeps the side opening for rotating pipe and urethra flushing pipe wrong
Opening (can judge that the side opening of rotation pipe docks also with urethra flushing pipe by mark in docking casing and tail ring set production mark
It is that the side opening for rotating pipe and urethra flushing pipe are staggered), then the end of flushing pipe is protruded into urethra by the urethral orifice of patient, and
It advances along urethra, the length protruded into according to flushing pipe judges that the end of flushing pipe has entered and stops advancing in bladder, will take out
It takes the syringe of flushing liquor to be connected to the tail end of rotation pipe, and drain pipe is connected on the leakage fluid dram of outer tube, enforce
The push rod of piston rod by the flushing liquor injection rotation pipe in syringe, and flows through rotation pipe and enters in bladder, and flushing liquor is rotating
Pipe will drive the rotation of active twisted blade during flowing, and then drive interlocking bar rotation, final that extravasated blood is driven to break up distortion
Blade rotation, since rotation pipe is continuing to inject flushing liquor into bladder, flushing liquor is stopped in bladder after can along inner tube and
Annular chamber outflow between outer tube as shown in figure 8, and the extravasated blood that can be rotated at the port for flowing through annular chamber break up distortion
Blade is smashed, and to be smoothly discharged, when the liquid when be discharged in drain pipe does not carry clot secretly, that is, completes the flushing work of bladder, will
Flushing pipe is extracted from urethra.
2, bladder+urethra joint is rinsed
Before use, carrying out disinfection operation to bladder irrigator, rotation docking casing makes the side opening and urethra flushing pipe pair that rotate pipe
Connecing (can judge that the side opening of rotation pipe docks also with urethra flushing pipe by mark in docking casing and tail ring set production mark
It is that the side opening for rotating pipe and urethra flushing pipe are staggered), then the end of flushing pipe is protruded into urethra by the urethral orifice of patient, and
It advances along urethra, the length protruded into according to flushing pipe judges that the end of flushing pipe has entered and stops advancing in bladder, will take out
It takes the syringe of flushing liquor to be connected to the tail end of rotation pipe, and drain pipe is connected on the leakage fluid dram of outer tube, enforce
The push rod of piston rod, by the flushing liquor injection rotation pipe in syringe, most of flushing liquor simultaneously flows through inner tube and enters in bladder,
Fraction flows through urethra flushing pipe and enters urethra, and flushing liquor will drive the rotation of active twisted blade during rotating pipe flow is dynamic
Turn, and then drives interlocking bar rotation, it is final that extravasated blood is driven to break up twisted blade rotation, since rotation pipe is continuing to infuse into bladder
Enter flushing liquor, flushing liquor after being stopped in bladder can along the annular chamber outflow between inner tube and outer tube as shown in figure 9, and
The extravasated blood that can be rotated when flowing through the port of annular chamber is broken up twisted blade and is smashed, to be smoothly discharged, to what is be discharged in drain pipe
When liquid does not carry clot secretly, that is, the flushing work of bladder and urethra is completed, flushing pipe is extracted from urethra.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of adjustable bladder urethra combines flusher, it is characterised in that: including flushing pipe, flushing pipe is by outer tube (1), inner tube
(2) it is formed with rotation pipe (3), passes through equally distributed multiple urethra flushing pipes from top to bottom between inner tube (2) and outer tube (1)
(8) it links together, the both ends difference connection of urethra flushing pipe (8) is described to inner tube (2) inside and the outside of outer tube (1)
Rotation pipe (3) is rotatably threaded through in inner tube (2), and the side wall of rotation pipe (3) is provided with the side that can be docked with urethra flushing pipe (8)
Hole (13), the lumen of rotation pipe (3) are flushing liquor feed pathway, and the annular chamber between inner tube (2) and outer tube (1) is flushing liquor row
Liquid channel, the rotation, which is managed, to be provided with interlocking bar (4) in (3) along its axis, and interlocking bar (4) is supported by two bearings,
The outer ring of bearing is fixedly connected by support bar with rotation pipe (3), and interlocking bar (4) passes through the inner ring of bearing and fixes with inner ring
Connection, the lower end of the interlocking bar (4) are arranged with active twisted blade (5), and the upper end of interlocking bar (4) is stretched out inner tube (2) and covered
It is broken up twisted blade (6) equipped with extravasated blood, the tail end of the rotation pipe (3) is provided with the docking casing (9) for connecting syringe,
Annular chamber tail end between inner tube (2) and outer tube (1) is closed by end plate, and tail ring set (10), tail are arranged with outside docking casing (9)
Ring set (10) is fixed on end plate, and is docked casing (9) and stretched out tail ring set (10) setting, described to dock the outer of casing (9)
Wall is symmetrical arranged there are two spacing head (11), and corresponding two spacing heads (11) in the inside of tail ring set (10) are respectively arranged with sliding slot
(12), two spacing heads (11) for docking casing (9) are inserted into two sliding slots (12) setting of tail ring set (10) respectively.
2. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: described actively to distort leaf
Piece (5) and the direction of twist for having extravasated blood to break up twisted blade (6) are opposite.
3. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: the outer tube (1)
Head end has the crimping (7) for the extension that concaves.
4. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: the tail end of outer tube (1)
Side wall is provided with leakage fluid dram.
5. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: the interlocking bar (4)
Lower end be arranged with N number of active twisted blade (5), the odd number that N is >=3.
6. a kind of adjustable bladder urethra as claimed in claim 5 combines flusher, it is characterised in that: described actively to distort leaf
Piece (5) is the biggish wealthy palm twisted blade of area.
7. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: the interlocking bar (4)
Upper end be arranged with M extravasated blood and break up twisted blade (6), the odd number that M is >=5.
8. a kind of adjustable bladder urethra as claimed in claim 7 combines flusher, it is characterised in that: the extravasated blood breaks up torsion
Bent blade (6) is the willow leaf twisted blade of elongate form.
9. a kind of adjustable bladder urethra as described in claim 1 combines flusher, it is characterised in that: the extravasated blood breaks up torsion
Bent blade (6) outer rim has the cutting edge for cutting clot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491570.XA CN109602969B (en) | 2018-12-07 | 2018-12-07 | Adjustable bladder and urethra combined irrigator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491570.XA CN109602969B (en) | 2018-12-07 | 2018-12-07 | Adjustable bladder and urethra combined irrigator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109602969A true CN109602969A (en) | 2019-04-12 |
| CN109602969B CN109602969B (en) | 2021-03-16 |
Family
ID=66007457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811491570.XA Active CN109602969B (en) | 2018-12-07 | 2018-12-07 | Adjustable bladder and urethra combined irrigator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109602969B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110180051A (en) * | 2019-07-13 | 2019-08-30 | 河南省中医院（河南中医药大学第二附属医院） | Belt cleaning device is used in obstetrical department's nursing |
| CN113975597A (en) * | 2021-12-01 | 2022-01-28 | 上海市嘉定区中心医院 | Prevent blockking up catheter |
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| CN110180051B (en) * | 2019-07-13 | 2021-04-02 | 河南省中医院（河南中医药大学第二附属医院） | Belt cleaning device is used in obstetrical department's nursing |
| CN113975597A (en) * | 2021-12-01 | 2022-01-28 | 上海市嘉定区中心医院 | Prevent blockking up catheter |
| CN113975597B (en) * | 2021-12-01 | 2023-09-22 | 上海市嘉定区中心医院 | Anti-blocking catheter |
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| CN109602969B (en) | 2021-03-16 |
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Inventor after: Wang Xiaohong Inventor after: Shi Zhenguo Inventor after: Wang Pei Inventor after: Li Sanqiang Inventor after: Xu Deying Inventor after: Zhu Xiaojuan Inventor before: Shi Zhenguo Inventor before: Xu Deying Inventor before: Wang Pei |
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