CN110251804A - A kind of visualization drainage catheter - Google Patents
A kind of visualization drainage catheter Download PDFInfo
- Publication number
- CN110251804A CN110251804A CN201910465368.8A CN201910465368A CN110251804A CN 110251804 A CN110251804 A CN 110251804A CN 201910465368 A CN201910465368 A CN 201910465368A CN 110251804 A CN110251804 A CN 110251804A
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- China
- Prior art keywords
- main body
- light source
- connecting line
- imaging sensor
- catheter main
- 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.)
- Pending
Links
- 238000012800 visualization Methods 0.000 title claims abstract description 15
- 238000003384 imaging method Methods 0.000 claims abstract description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003902 lesion Effects 0.000 description 9
- 210000004556 brain Anatomy 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002591 computed tomography Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 206010067268 Post procedural infection Diseases 0.000 description 1
- 206010061926 Purulence Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011797 cavity material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0676—Endoscope light sources at distal tip of an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0017—Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pulmonology (AREA)
- Hematology (AREA)
- Epidemiology (AREA)
- Anesthesiology (AREA)
- Urology & Nephrology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
A kind of visualization drainage catheter, type is related to Medical drainage tube field, equipped with catheter main body, the side wall of catheter main body front end is equipped with conduction hole, it is characterized in that catheter main body front end is equipped with imaging sensor and cold light light source, imaging sensor connecting line and light source connecting line are equipped in conduit, imaging sensor connecting line and light source connection line front end are connected with having imaging sensor and cold light light source respectively, catheter main body rear end is equipped with connection jaws and draining hole, and imaging sensor connecting line and light source connecting line seal stretching from connection jaws.The advantages that present invention has structure simple, easy to use, sets that pipe position is accurate, improves the accuracy of condition-inference, and drainage effect is good.
Description
Technical field
The present invention relates to Medical drainage tube field, elaborating is that a kind of structure is simple, easy to use, sets pipe position essence
Standard improves the accuracy of condition-inference, the good visualization drainage catheter of drainage effect.
Background technique
It is known that drainage catheter be for Clinical Surgery drain, by the purulence gathered between tissue or in body cavity, blood,
Liquid is directed in vitro, a kind of medical instrument for preventing postoperative infection, promoting wound healing.The main knot of existing drainage catheter
Structure is provided with catheter main body, and catheter main body front end is equipped with conduction hole, in use, the front end merging of catheter main body is needed to drain
Lesions position is drained, and needs to detect the physical quantitys such as pressure or the temperature of lesions position in the drainage treatment of part, in conduit master
The front end of body is equipped with the detection sensors such as pressure sensor, temperature sensor, is equipped with the number parallel with drainage lumens in catheter main body
According to line chamber, data line is intracavitary to be equipped with data line, and the detection sensors such as pressure sensor, temperature sensor are through data line and conduit master
External patient monitor is connected, the lesion that the detection sensors such as patient monitor real-time display pressure sensor, temperature sensor detect
The physical quantitys such as pressure, the temperature at place.The position of its front end merging lesions position is to be swept according to preoperative CT by existing drainage catheter
The lesions position of acquisition is retouched to carry out blindmate, lesions position is judged there are error, sets that pipe error is big, and drainage effect is poor；It is right
It is general that the pressure and temperature in cranium brain is measured by being placed in conduit when the lesion row diagnosing and treating for needing to drain, come
Determine the state of an illness, and can not directly observe the situation in cranium brain, but only can not accurately determine internal feelings by measuring pressure and temperature
Condition is easy to appear mistaken diagnosis, delays the state of an illness, causes serious life to endanger patient.
Summary of the invention
Present invention aim to address appeal the deficiencies in the prior art, and it is simple, easy to use to provide a kind of structure, set pipe position
It sets precisely, improves the accuracy of condition-inference, the good visualization drainage catheter of drainage effect.
The present invention solves technical solution used by above-mentioned the deficiencies in the prior art:
A kind of visualization drainage catheter, is equipped with catheter main body, and the side wall of catheter main body front end is equipped with conduction hole, it is characterised in that
Catheter main body front end is equipped with imaging sensor and cold light light source, is equipped with imaging sensor connecting line and light source connecting line in conduit,
Imaging sensor connecting line and light source connection line front end are connected with having imaging sensor and cold light light source respectively, catheter main body rear end
Portion is equipped with connection jaws and draining hole, and imaging sensor connecting line and light source connecting line seal stretching from connection jaws.
Sealing is plugged with connection-peg in the rear port of heretofore described catheter main body, and the conducting wire and image of connection-peg pass
Sensor connecting line is connected with light source connecting line；The draining hole is located at the downside of catheter main body rear end.Connection-peg can lead to
It crosses conducting wire to be connected with image procossing and display, is used for image sensor acquired image.Draining hole is equipped with connection
Head, for connecting waste fluid bag or other containers.
Card slot, the imaging sensor and cold light light source are equipped in the front end of heretofore described catheter main body through even
Joint chair is fastened in card slot.The catheter main body front end is open, and the imaging sensor and cold light light source is mounted in circle
On the attachment base of shape, the catheter main body inner wall on front side of attachment base is equipped with the preceding baffle ring of annular, the catheter main body on rear side of attachment base
Inner wall is equipped with the rear baffle ring of annular.Imaging sensor and cold light light source are located in the middle part of preceding baffle ring, and baffle ring stops image before avoiding
Sensor and cold light light source；Imaging sensor connecting line and light source connecting line pass through in the middle part of rear baffle ring, pass through attachment base after with figure
As sensor is connected with cold light light source.
The rear port of heretofore described catheter main body is draining hole；The connection jaws are located at catheter main body rear end
(under) on side wall, the connection jaws on the outside of catheter main body are equipped with seal pipe, and imaging sensor connecting line and light source connecting line are (outer
Portion be equipped with wire covering, formed single line cable formed cable) and seal pipe between through silica gel fixed seal connection.
Heretofore described imaging sensor and cold light light source be fujinon electronic video endoscope head (including CCD couple hysteroscope
With intracavitary cold light illumination system), the imaging sensor connecting line and light source connecting line are the transmission cable of fujinon electronic video endoscope.
The side wall of heretofore described catheter main body is equipped with the open pressure inspection in (parallel with catheter main body) front end
Chamber is surveyed, pressure sensor is equipped in pressure detecting chamber front end, pressure detecting is intracavitary to be led equipped with what front end was connected with pressure sensor
Line, conducting wire are pierced by by the pressure detecting cavity rear end mouth at catheter main body rear portion, are equipped between pressure detecting cavity wall and conducting wire by the two
The silica gel of sealed connection；Be also possible to conducting wire integrated molding be embedded it is intracavitary in pressure detecting, i.e., one in the side wall of catheter main body
Body formed embedded conducting wire.
Heretofore described imaging sensor connecting line, light source connecting line and conducting wire rear end is equipped with connection-peg.Convenient for
Pressure monitor is connected with image procossing and display.
The present invention will be led in use, imaging sensor connecting line, light source connecting line are connected with image procossing and display
Line is connected with pressure monitor.According to preoperative CT scan obtain lesions position carry out setting pipe, during setting pipe, image procossing and
Display is cold light light source power supply by light source connecting line, and cold light light source luminescent is radiated at the position that catheter main body front end is placed in,
The image of acquisition is transferred to image procossing and display through imaging sensor connecting line by imaging sensor, is shown and is led on display
The realtime graphic for the patient's body located where pipe body front end, situation when such as cranium brain drainage in observable cranium brain and without opening cranium
It performs the operation, visible diagnosis can be carried out in surgical procedure, accurate judgement is made to the state of an illness and its variation, and can be according to real-time display
Adjust drainage location, drainage effect is more preferably；Accurate foundation is provided for subsequent therapeutic scheme, mistake is substantially reduced and examines probability, keep away
Exempt from state of an illness delay to endanger patient health.The present invention has structure simple, easy to use, and it is accurate to set pipe position, improves the state of an illness
The advantages that accuracy of diagnosis, drainage effect is good.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is partial enlarged view at the A of Fig. 1.
Fig. 3 is attachment structure schematic diagram when Fig. 1 is used.
Fig. 4 is another structural schematic diagram of the invention.
Fig. 5 is attachment structure schematic diagram when Fig. 4 is used.
Specific embodiment
Visualization drainage catheter as shown in Figure 1, Figure 2, Figure 3 shows is equipped with catheter main body 6, on the side wall of 6 front end of catheter main body
Equipped with conduction hole 11,6 front end of catheter main body is equipped with imaging sensor and cold light light source, is equipped with imaging sensor connecting line in conduit
With light source connecting line, imaging sensor connecting line and light source connection line front end respectively with have imaging sensor and cold light light source phase
Even, catheter main body rear end is equipped with connection jaws and draining hole, and imaging sensor connecting line and light source connecting line are close from connection jaws
Envelope is stretched out；Imaging sensor connecting line connects line back end with light source equipped with connection-peg 8；Convenient for image procossing and display phase
Even.Electronic endoscope system is selected to realize in the present embodiment, the imaging sensor and cold light light source are fujinon electronic video endoscope
Head 4(include CCD coupling hysteroscope and intracavitary cold light illumination system), the imaging sensor connecting line and light source connecting line
For the transmission cable 5 of fujinon electronic video endoscope；The transmission cable 5 of fujinon electronic video endoscope selects hard cable, by the front end of catheter main body
When being placed at drainage, it can play a supporting role.The sealing of connection-peg 8 is plugged in the rear port of catheter main body 6, and connection-peg 8 is led
Line is connected with imaging sensor connecting line and light source connecting line (transmission cable 5)；Connection-peg can pass through conducting wire and image procossing
And display is connected, and is used for image sensor acquired image.The draining hole is located at catheter main body rear end
Downside.As can be seen that catheter main body rear end is sealedly connected with three-way connection from Fig. 1, Fig. 3, catheter main body rear end mouthful with
The Single port of three-way connection is connected, and the other two-port of three-way connection is respectively connection jaws and draining hole, and connection-peg, which is mounted on, to be connect
In line mouth, draining hole is equipped with connector 7, and connector 7 is used to connect waste fluid bag or other collect the container of drainage waste liquid.From figure
As can be seen that the front end of the catheter main body is equipped with card slot in 2, the imaging sensor and cold light light source are through attachment base card
It is located in card slot；Specific structure are as follows: the catheter main body front end is open, and the imaging sensor and cold light light source is mounted on
On rounded attachment base (back head of fujinon electronic video endoscope is equipped with attachment base), set on the catheter main body inner wall on front side of attachment base
There is the preceding baffle ring 9 of annular, the catheter main body inner wall on rear side of attachment base is equipped with the rear baffle ring 10 of annular, and preceding baffle ring 9 and rear gear change
Between be card slot；Imaging sensor and cold light light source are located in the middle part of preceding baffle ring, and baffle ring stops imaging sensor and cold light light before avoiding
Source；Imaging sensor connecting line and light source connecting line pass through in the middle part of rear baffle ring, pass through attachment base after with imaging sensor and cold light
Light source is connected.
The present invention is further improved, and the side wall of the catheter main body 6 is opened wide equipped with the front end parallel with catheter main body
Pressure detecting chamber, pressure sensor 3 is equipped in pressure detecting chamber front end, pressure detecting is intracavitary to be equipped with front end and pressure sensor
3 connected conducting wires 2, conducting wire 2 are pierced by by the pressure detecting cavity rear end mouth at 6 rear portion of catheter main body, pressure detecting cavity wall and conducting wire 2
Between connected through silica gel sealing；Be also possible to conducting wire integrated molding be embedded it is intracavitary in pressure detecting, i.e., in the side wall of catheter main body
Integrally formed embedded conducting wire.Conducting wire rear end is equipped with connection plug 1, and connection plug 1 with pressure monitor for being connected.
Visualization drainage catheter as described in Fig. 4, Fig. 5, the rear port 15 of catheter main body are draining hole, are set on draining hole
There is flow sub 16, flow sub 16 is used to connect waste fluid bag or other collect the container of drainage waste liquid.The connection jaws are set
In the lower wall of catheter main body rear end, the connection jaws in 6 outside of catheter main body are equipped with seal pipe 17, imaging sensor connection
Through 18 fixed seal connection of silica gel between line and light source connecting line (transmission cable 5 of fujinon electronic video endoscope) and seal pipe.Other structures
It is identical as the visualization structure of drainage catheter shown in FIG. 1.
The present invention is in use, imaging sensor connecting line, light source connecting line are connected with image procossing and display 13, figure
The image processor and monitor of existing electronic endoscope system can be selected in picture processing and display 13, and conducting wire and pressure are supervised
Visual organ 12 is connected.It carries out setting pipe according to the lesions position that preoperative CT scan obtains, during setting pipe, image procossing and display are logical
Crossing light source connecting line is cold light light source power supply, cold light light source luminescent, the position for being radiated at the merging of catheter main body front end, image sensing
The image of acquisition is transferred to image procossing and display through imaging sensor connecting line by device, before showing catheter main body on display
The realtime graphic for the patient's body located where end, situation when such as cranium brain drainage in observable cranium brain and without operation of opening cranium, hand
Visible diagnosis can be carried out during art, accurate judgement is made to the state of an illness and its variation, and can adjust according to real-time display
Drainage location, drainage effect is more preferably；Accurate foundation is provided for subsequent therapeutic scheme, mistake is substantially reduced and examines probability, avoid the state of an illness
Delay is to endanger patient health.The present invention has structure simple, easy to use, and it is accurate to set pipe position, improves condition-inference
The advantages that accuracy, drainage effect is good.
Claims (6)
1. a kind of visualization drainage catheter is equipped with catheter main body, the side wall of catheter main body front end is equipped with conduction hole, and feature exists
It is equipped with imaging sensor and cold light light source in catheter main body front end, imaging sensor connecting line is equipped in conduit and is connected with light source
Line, imaging sensor connecting line and light source connection line front end are connected with having imaging sensor and cold light light source respectively, catheter main body
Rear end is equipped with connection jaws and draining hole, and imaging sensor connecting line and light source connecting line seal stretching from connection jaws.
2. visualization drainage catheter according to claim 1, it is characterised in that close in the rear port of the catheter main body
Envelope is plugged with connection-peg, and the conducting wire of connection-peg is connected with imaging sensor connecting line and light source connecting line；The draining hole is set
In the downside of catheter main body rear end.
3. visualization drainage catheter according to claim 2, it is characterised in that be equipped in the front end of the catheter main body
Card slot, the imaging sensor and cold light light source are fastened in card slot through attachment base.
4. visualization drainage catheter according to claim 3, it is characterised in that the rear port of the catheter main body is to draw
Head piece；The connection jaws are located on the side wall of catheter main body rear end, and the connection jaws on the outside of catheter main body are equipped with seal pipe,
Through silica gel fixed seal connection between imaging sensor connecting line and light source connecting line and seal pipe.
5. visualization drainage catheter according to any one of claims 1-4, it is characterised in that the imaging sensor
It is the head of fujinon electronic video endoscope with cold light light source, the imaging sensor connecting line and light source connecting line are fujinon electronic video endoscope
Transmission cable.
6. visualization drainage catheter according to claim 5, it is characterised in that the side wall of the catheter main body is equipped with
The open pressure detecting chamber in front end is equipped with pressure sensor in pressure detecting chamber front end, and pressure detecting is intracavitary to be equipped with front end and pressure
The connected conducting wire of force snesor, conducting wire are pierced by by the pressure detecting cavity rear end mouth at catheter main body rear portion, pressure detecting cavity wall with
The silica gel for being tightly connected the two is equipped between conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465368.8A CN110251804A (en) | 2019-05-30 | 2019-05-30 | A kind of visualization drainage catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465368.8A CN110251804A (en) | 2019-05-30 | 2019-05-30 | A kind of visualization drainage catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110251804A true CN110251804A (en) | 2019-09-20 |
Family
ID=67916163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910465368.8A Pending CN110251804A (en) | 2019-05-30 | 2019-05-30 | A kind of visualization drainage catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110251804A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110917459A (en) * | 2019-12-11 | 2020-03-27 | 姜虹 | Trachea cannula device for patient with difficult airway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005118135A (en) * | 2003-10-14 | 2005-05-12 | Olympus Corp | Drainage tube |
| US20090318757A1 (en) * | 2008-06-23 | 2009-12-24 | Percuvision, Llc | Flexible visually directed medical intubation instrument and method |
| CN201978307U (en) * | 2011-01-20 | 2011-09-21 | 山东大正医疗器械股份有限公司 | Drainage catheter capable of monitoring intracranial pressure |
| CN103096968A (en) * | 2010-08-30 | 2013-05-08 | 富士胶片株式会社 | Drainage tube and endoscope with drainage tube |
| CN103223206A (en) * | 2013-04-03 | 2013-07-31 | 张润卯 | Body cavity drainage tube with endoscopic function |
| CN104274170A (en) * | 2014-10-23 | 2015-01-14 | 万鹏 | Intracranial pressure monitor |
| CN204951916U (en) * | 2015-08-14 | 2016-01-13 | 山西医科大学第二医院 | Department of cardiovascular surgery drainage tube |
| CN208741723U (en) * | 2017-11-14 | 2019-04-16 | 沭阳县人民医院 | Drainage tube is peeped in the vomica of deep |
| CN210933331U (en) * | 2019-05-30 | 2020-07-07 | 威海柯西医疗科技有限公司 | Visual drainage catheter |
-
2019
- 2019-05-30 CN CN201910465368.8A patent/CN110251804A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005118135A (en) * | 2003-10-14 | 2005-05-12 | Olympus Corp | Drainage tube |
| US20090318757A1 (en) * | 2008-06-23 | 2009-12-24 | Percuvision, Llc | Flexible visually directed medical intubation instrument and method |
| CN103096968A (en) * | 2010-08-30 | 2013-05-08 | 富士胶片株式会社 | Drainage tube and endoscope with drainage tube |
| CN201978307U (en) * | 2011-01-20 | 2011-09-21 | 山东大正医疗器械股份有限公司 | Drainage catheter capable of monitoring intracranial pressure |
| CN103223206A (en) * | 2013-04-03 | 2013-07-31 | 张润卯 | Body cavity drainage tube with endoscopic function |
| CN104274170A (en) * | 2014-10-23 | 2015-01-14 | 万鹏 | Intracranial pressure monitor |
| CN204951916U (en) * | 2015-08-14 | 2016-01-13 | 山西医科大学第二医院 | Department of cardiovascular surgery drainage tube |
| CN208741723U (en) * | 2017-11-14 | 2019-04-16 | 沭阳县人民医院 | Drainage tube is peeped in the vomica of deep |
| CN210933331U (en) * | 2019-05-30 | 2020-07-07 | 威海柯西医疗科技有限公司 | Visual drainage catheter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110917459A (en) * | 2019-12-11 | 2020-03-27 | 姜虹 | Trachea cannula device for patient with difficult airway |
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