CN113520281A - A disposable four-way gastrointestinal medical endoscope - Google Patents
A disposable four-way gastrointestinal medical endoscope Download PDFInfo
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- CN113520281A CN113520281A CN202010308586.3A CN202010308586A CN113520281A CN 113520281 A CN113520281 A CN 113520281A CN 202010308586 A CN202010308586 A CN 202010308586A CN 113520281 A CN113520281 A CN 113520281A
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- 230000002496 gastric effect Effects 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 95
- 238000003780 insertion Methods 0.000 claims abstract description 25
- 230000037431 insertion Effects 0.000 claims abstract description 25
- 238000009958 sewing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 15
- 206010011409 Cross infection Diseases 0.000 abstract description 7
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 7
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
-
- 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
- A61B1/00071—Insertion part 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00103—Constructional details of the endoscope body designed for single use
-
- 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
- A61B1/00105—Constructional details of the endoscope body characterised by modular construction
-
- 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
- A61B1/00142—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 means for preventing contamination, e.g. by using a sanitary sheath
-
- 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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
本发明公开了一种一次性四向肠胃医疗内窥镜，包括弯曲模组和功能模组，所述弯曲模组包括弯曲部分、弯曲控制部分以及连接弯曲部分和弯曲控制部分的插入部分，所述弯曲部分的内部设置有通道一，所述插入部分的内部设置有通道二；本发明的有益效果是：弯曲部分仅插入部分的表面需要消毒，该表面为光滑平整的圆柱表面，便于消毒，规避消毒不彻底的风险；功能部分做成一次性可抛弃的低成本的设计，将细长的通道和复杂的凹凸不平的表面结构做在可抛弃的功能部分上，避免交叉感染的风险；通过设计的固定机构，将固定带缠绕在末端部分，固定带一端的魔术贴毛面和魔术贴刺面粘合，将末端部分稳固，减少杂乱。
The invention discloses a disposable four-way gastrointestinal medical endoscope, comprising a bending module and a functional module. The bending module includes a bending part, a bending control part, and an insertion part connecting the bending part and the bending control part. The inside of the curved part is provided with a channel 1, and the inside of the insertion part is provided with a channel 2; the beneficial effects of the present invention are: only the surface of the insertion part of the curved part needs to be sterilized, and the surface is a smooth and flat cylindrical surface, which is convenient for sterilization, Avoid the risk of incomplete disinfection; the functional part is made into a disposable and low-cost design, and the slender channel and complex uneven surface structure are made on the disposable functional part to avoid the risk of cross infection; The designed fixing mechanism wraps the fixing tape around the end part, and glues the Velcro rough surface and the Velcro barbed surface at one end of the fixing tape to stabilize the end part and reduce clutter.
Description
Technical Field
The invention belongs to the technical field of endoscopes, and particularly relates to a disposable four-way gastrointestinal medical endoscope.
Background
An endoscope is a common medical instrument and generally comprises a bending control part, an insertion part and a signal connection part. The signal connection portion thereof is usually connected to the image display apparatus. When the inserted part of the endoscope is inserted into the human body through a natural pore canal of the human body or a small incision made by an operation for use, the inserted part of the endoscope is guided into a pre-examined organ by controlling the bending control part, and the change of the related part can be directly observed.
The endoscope is a delicate medical instrument, most of domestic medical endoscope markets are occupied by foreign products, the price is from tens of thousands to hundreds of thousands, complex and high-cost disinfection and maintenance are carried out after each use, and the hidden danger of cross infection caused by nonstandard disinfection procedures exists.
A water-air channel, an instrument channel, a suction channel, a signal cable and a light-guide fiber are arranged in a traditional endoscope insertion tube. The head end of the endoscope is provided with a water-gas nozzle, an imaging module, an illuminating module, an instrument channel outlet, an internal slender channel and the uneven surface of the head end, so that thorough disinfection is very difficult, but the traditional endoscope needs to be improved due to the fact that the manufacturing cost of the existing endoscope is high and the existing endoscope needs to be reused, and the cost and the risk of cross infection are reduced.
The disposable product which appears later is made of medical resin or soft materials, has poor bending control performance, is difficult to reach affected parts and has narrow application range.
In order to reduce production cost, avoid the risk of incomplete disinfection and avoid cross infection, a disposable four-way gastrointestinal medical endoscope is provided.
Disclosure of Invention
The invention aims to provide a disposable four-way gastrointestinal medical endoscope, which reduces the production cost, avoids the risk of incomplete disinfection and avoids cross infection.
In order to achieve the purpose, the invention provides the following technical scheme: a disposable four-way gastrointestinal medical endoscope comprises a bending module and a functional module, wherein the bending module comprises a bending part, a bending control part and an insertion part for connecting the bending part and the bending control part, a first channel is arranged inside the bending part, and a second channel is arranged inside the insertion part; the functional module comprises a head end part, a tail end part and a pipe harness part connecting the head end part and the tail end part; the end portion and the pipe harness portion may pass through the first passage of the bent portion and the second passage of the insertion portion, and the head end portion of the function module may be fixed to the front end of the bent portion.
Preferably, the bending control portion includes a bending member bendable in two or four directions, and the bending member is provided with two or four pulling cords connected to the bending control portion.
Preferably, the bending control device further comprises a pull rope, a guide groove for the pull rope to pass through is formed in the insertion portion, a driving wheel capable of pulling the pull rope is arranged on the bending control portion, and a third channel is formed in the bending control portion.
Preferably, the head end portion is provided with a boss on which a seal ring is provided.
Preferably, the boss is provided with a buckle, and the bent portion is provided with a clamping groove matched with the buckle.
Preferably, the curved portion is a smooth flat cylindrical surface.
Preferably, be provided with fixed establishment on the tip portion, this fixed establishment includes fixed band, magic tape matt surface and magic tape thorn face, the one end of fixed band is fixed with magic tape matt surface, and the other end is fixed with the magic tape thorn face that bonds mutually with magic tape matt surface.
Preferably, the magic tape matt surface and the magic tape stabbing surface are connected with the fixing band through sewing.
Compared with the prior art, the invention has the beneficial effects that:
(1) the surface of the insertion part of the bent part only needs to be disinfected, and the surface is a smooth and flat cylindrical surface, so that the disinfection is facilitated, and the risk of incomplete disinfection is avoided;
(2) the functional part is made into a disposable low-cost design, and a slender channel and a complex uneven surface structure are made on the disposable functional part, so that the risk of cross infection is avoided;
(3) through the fixed establishment of design, twine the fixed band at terminal portion, the bonding of the magic tape matt surface and the magic tape thorn face of fixed band one end stabilizes terminal portion, reduces in a jumble or disorderly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the separation mode of FIG. 1 according to the present invention;
FIG. 3 is a schematic structural diagram of the bending module of FIG. 1 according to the present invention;
FIG. 4 is a schematic structural diagram of the functional module shown in FIG. 1 according to the present invention;
FIG. 5 is a first view of the first embodiment of FIG. 3;
FIG. 6 is a second schematic view of the second embodiment of FIG. 3;
FIG. 7 is a schematic view of the head portion of the functional module of FIG. 1 sealed to the flexure of the flexure module in accordance with the present invention;
FIG. 8 is a schematic view of the present invention showing the quick assembly and disassembly of the head portion of the functional module of FIG. 1 to and from the flexure of the flexure module;
FIG. 9 is a schematic view of the fixing mechanism of the present invention;
in the figure: 10. a bending module; 11. a curved portion; 111. a first channel; 112. a bending assembly; 113. pulling a rope; 114. a card slot; 12. a bending control portion; 121. a drive wheel; 122. a third channel; 13. an insertion portion; 131. a second channel; 132. a guide groove; 20. a functional module; 21. a head end portion; 211. a boss; 212. a seal ring; 213. buckling; 22. a terminal portion; 23. a line bundle portion; 24. fixing belts; 25. magic tape hair side; 26. magic tape thorn face.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 7, fig. 8 and fig. 9, the present invention provides a technical solution: a disposable four-way gastrointestinal medical endoscope comprises a bending module 10 and a function module 20, wherein the bending module 10 comprises a bending part 11, a bending control part 12 and an insertion part 13 which connects the bending part 11 and the bending control part 12, a first channel 111 is arranged inside the bending part 11, and a second channel 131 is arranged inside the insertion part 13; the function module 20 includes a head end portion 21, a tip end portion 22, and a tube harness portion 23 connecting the head end portion 21 and the tip end portion 22; the end portion 22 and the pipe harness portion 23 may pass through the first passage 111 of the bending portion 11 and the second passage 131 of the insertion portion 13, the head portion 21 of the function module 20 may be fixed to the front end of the bending portion 11, and the head portion 21 of the function module 20 may be quickly separated from the front end of the bending portion 11 of the bending module 10, while the pipe harness portion 23 and the end portion 22 of the function module 20 are withdrawn from the first passage 111 of the bending portion 11 and the second passage 131 of the insertion portion 13, so that the function module 20 is separated from the bending module 10.
In this embodiment, the bending control portion 12 preferably includes a bending member 112 that can be bent in two directions, and two pulling ropes 113 connected to the bending control portion 12 are provided on the bending member 112.
In this embodiment, it is preferable that the bending control portion 12 further includes a pulling rope 113, the insertion portion 13 is provided with a guide slot 132 for the pulling rope 113 to pass through, the bending control portion 12 is provided with a driving wheel 121 for pulling the pulling rope 113, the driving wheel 121 pulls the pulling rope 113 to bend the bending assembly 112 to a corresponding position, and the bending control portion 12 is provided with a third passage 122.
In this embodiment, it is preferable that the head end portion 21 is provided with a boss 211, and the boss 211 is provided with a seal ring 212.
In this embodiment, it is preferable that the boss 211 is provided with a catch 213, the curved portion 11 is provided with a catch 114 matching with the catch 213, and the head end portion 21 and the curved portion 11 are quickly fixed and separated by the cooperation of the catch 213 and the catch 114.
In this embodiment, it is preferable that the curved portion 11 has a smooth and flat cylindrical surface, so that the sterilization is easy without the risk of incomplete sterilization.
In this embodiment, it is preferred, be provided with fixed establishment on terminal portion 22, this fixed establishment includes fixed band 24, magic tape matt surface 25 and magic tape thorn face 26, the one end of fixed band 24 is fixed with magic tape matt surface 25, the other end is fixed with the magic tape thorn face 26 that bonds mutually with magic tape matt surface 25, take up fixed band 24, twine fixed band 24 at terminal portion 22, the magic tape matt surface 25 and the magic tape thorn face 26 bonding of fixed band 24 one end, it is firm with terminal portion 22, reduce in a jumble way, when using terminal portion 22, reveal fixed band 24, overcome the adhesion force of magic tape matt surface 25 and magic tape thorn face 26.
In this embodiment, preferably, the hook and loop fastener matt surface 25 and the hook and loop fastener stabbing surface 26 are connected with the fixing band 24 by sewing, so that the hook and loop fastener matt surface 25 and the hook and loop fastener stabbing surface 26 are fixed and stable.
Example 2
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 6, fig. 7, fig. 8 and fig. 9, the present invention provides a technical solution: a disposable four-way gastrointestinal medical endoscope comprises a bending module 10 and a function module 20, wherein the bending module 10 comprises a bending part 11, a bending control part 12 and an insertion part 13 which connects the bending part 11 and the bending control part 12, a first channel 111 is arranged inside the bending part 11, and a second channel 131 is arranged inside the insertion part 13; the function module 20 includes a head end portion 21, a tip end portion 22, and a tube harness portion 23 connecting the head end portion 21 and the tip end portion 22; the end portion 22 and the pipe harness portion 23 may pass through the first passage 111 of the bending portion 11 and the second passage 131 of the insertion portion 13, the head portion 21 of the function module 20 may be fixed to the front end of the bending portion 11, and the head portion 21 of the function module 20 may be quickly separated from the front end of the bending portion 11 of the bending module 10, while the pipe harness portion 23 and the end portion 22 of the function module 20 are withdrawn from the first passage 111 of the bending portion 11 and the second passage 131 of the insertion portion 13, so that the function module 20 is separated from the bending module 10.
In this embodiment, the bending control portion 12 preferably includes a bending member 112 that is bendable in four directions, and four pulling cords 113 connected to the bending control portion 12 are provided on the bending member 112.
In this embodiment, it is preferable that the bending control portion 12 further includes a pulling rope 113, the insertion portion 13 is provided with a guide slot 132 for the pulling rope 113 to pass through, the bending control portion 12 is provided with a driving wheel 121 for pulling the pulling rope 113, the driving wheel 121 pulls the pulling rope 113 to bend the bending assembly 112 to a corresponding position, and the bending control portion 12 is provided with a third passage 122.
In this embodiment, it is preferable that the head end portion 21 is provided with a boss 211, and the boss 211 is provided with a seal ring 212.
In this embodiment, it is preferable that the boss 211 is provided with a catch 213, the curved portion 11 is provided with a catch 114 matching with the catch 213, and the head end portion 21 and the curved portion 11 are quickly fixed and separated by the cooperation of the catch 213 and the catch 114.
In this embodiment, it is preferable that the curved portion 11 has a smooth and flat cylindrical surface, so that the sterilization is easy without the risk of incomplete sterilization.
In this embodiment, it is preferred, be provided with fixed establishment on terminal portion 22, this fixed establishment includes fixed band 24, magic tape matt surface 25 and magic tape thorn face 26, the one end of fixed band 24 is fixed with magic tape matt surface 25, the other end is fixed with the magic tape thorn face 26 that bonds mutually with magic tape matt surface 25, take up fixed band 24, twine fixed band 24 at terminal portion 22, the magic tape matt surface 25 and the magic tape thorn face 26 bonding of fixed band 24 one end, it is firm with terminal portion 22, reduce in a jumble way, when using terminal portion 22, reveal fixed band 24, overcome the adhesion force of magic tape matt surface 25 and magic tape thorn face 26.
In this embodiment, preferably, the hook and loop fastener matt surface 25 and the hook and loop fastener stabbing surface 26 are connected with the fixing band 24 by sewing, so that the hook and loop fastener matt surface 25 and the hook and loop fastener stabbing surface 26 are fixed and stable.
The working principle and the using process of the invention are as follows: when the endoscope is used, the end part 22 and the tube harness part 23 of the function module 20 are inserted through the first channel 111 of the bending part 11 and the second channel 131 of the insertion part 13 and are inserted through the third channel 122 of the bending control part 12, the end part 22 is connected with an external device of an endoscope, such as an image display device, the boss 211 of the head end part 21 is sleeved in the channel of the bending part 11, the sealing ring 212 of the head end part 21 forms a seal with the first channel 111 of the bending part 11, the buckle 213 of the head end part 21 is clamped in the clamping groove 114 of the bending part 11, the device is ready for use, and a doctor can use the endoscope device;
after use, the end section 22 is disconnected from the external equipment of the endoscope, the buckle 213 of the head end section 21 is withdrawn from the clamping groove 114 of the bending section 11, then the pipe harness section 23 and the end section 22 are withdrawn from the third channel 122 of the bending control section 12, the second channel 131 of the insertion section 13 and the first channel 111 of the bending section 11, respectively, and the function module 20 is discarded; the bending part 11 still adopts the precise design of the traditional endoscope, the bending part 11 only needs to be sterilized on the surface of the insertion part 13, the surface is a smooth and flat cylindrical surface, the sterilization is easy, and the risk of incomplete sterilization is avoided; the functional part is made into a disposable low-cost design, and a slender channel and a complex uneven surface structure are made on the disposable functional part, so that the risk of cross infection is avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A disposable four-way gastrointestinal medical endoscope, comprising a bending module (10) and a functional module (20), characterized in that: the bending module (10) comprises a bending part (11), a bending control part (12) and an inserting part (13) connecting the bending part (11) and the bending control part (12), wherein a first channel (111) is arranged inside the bending part (11), and a second channel (131) is arranged inside the inserting part (13); the function module (20) comprises a head end part (21), a tail end part (22) and a pipe harness part (23) which is connected with the head end part (21) and the tail end part (22); the end portion (22) and the pipe harness portion (23) can pass through the first passage (111) of the bent portion (11) and the second passage (131) of the insertion portion (13), and the head end portion (21) of the function module (20) can be fixed to the front end of the bent portion (11).
2. A disposable quadriversal gastrointestinal medical endoscope according to claim 1, wherein: the bending control part (12) comprises a bending component (112) capable of bending towards two directions or four directions, and two or four pull ropes (113) connected to the bending control part (12) are arranged on the bending component (112).
3. A disposable quadriversal gastrointestinal medical endoscope according to claim 2, wherein: the bending control device is characterized by further comprising a pull rope (113), a guide groove (132) for the pull rope (113) to penetrate through is formed in the inserting portion (13), a driving wheel (121) capable of pulling the pull rope (113) is arranged on the bending control portion (12), and a channel III (122) is arranged on the bending control portion (12).
4. A disposable quadriversal gastrointestinal medical endoscope according to claim 1, wherein: a boss (211) is arranged on the head end part (21), and a sealing ring (212) is arranged on the boss (211).
5. A disposable quadriversal gastrointestinal medical endoscope according to claim 4, characterized in that: the boss (211) is provided with a buckle (213), and the bending part (11) is provided with a clamping groove (114) matched with the buckle (213).
6. A disposable quadriversal gastrointestinal medical endoscope according to claim 1, wherein: the curved portion (11) is a smooth flat cylindrical surface.
7. A disposable quadriversal gastrointestinal medical endoscope according to claim 1, wherein: be provided with fixed establishment on terminal portion (22), this fixed establishment includes fixed band (24), magic tape matt surface (25) and magic tape thorn face (26), the one end of fixed band (24) is fixed with magic tape matt surface (25), and the other end is fixed with magic tape thorn face (26) with magic tape matt surface (25) looks bonding.
8. A disposable quadriversal gastrointestinal medical endoscope according to claim 7, wherein: the magic tape rough surface (25) and the magic tape stabbing surface (26) are connected with the fixing belt (24) through sewing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308586.3A CN113520281A (en) | 2020-04-18 | 2020-04-18 | A disposable four-way gastrointestinal medical endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308586.3A CN113520281A (en) | 2020-04-18 | 2020-04-18 | A disposable four-way gastrointestinal medical endoscope |
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| Publication Number | Publication Date |
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| CN113520281A true CN113520281A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010308586.3A Pending CN113520281A (en) | 2020-04-18 | 2020-04-18 | A disposable four-way gastrointestinal medical endoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468967A (en) * | 2022-01-24 | 2022-05-13 | 杭州康哲医疗器械有限公司 | Gastroscopy cannula assembly |
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2020
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|---|---|---|---|---|
| CN114468967A (en) * | 2022-01-24 | 2022-05-13 | 杭州康哲医疗器械有限公司 | Gastroscopy cannula assembly |
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