CN110558922B - Neuroendoscopy with suction device and use method thereof - Google Patents
Neuroendoscopy with suction device and use method thereof Download PDFInfo
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- CN110558922B CN110558922B CN201910823924.4A CN201910823924A CN110558922B CN 110558922 B CN110558922 B CN 110558922B CN 201910823924 A CN201910823924 A CN 201910823924A CN 110558922 B CN110558922 B CN 110558922B
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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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
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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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/018—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 characterised by internal passages or accessories therefor for receiving instruments
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- A61M1/0023—
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Abstract
The invention discloses a nerve endoscope with a suction device and a use method thereof, the nerve endoscope with the suction device comprises an endoscope and a suction sleeve, the suction sleeve is of a double-layer hollow pipeline structure, the inner layer of the suction sleeve surrounds an endoscope channel, the endoscope is detachably connected in the endoscope channel, a suction channel is formed between the outer layer and the inner layer of the suction sleeve, the front end of the suction channel is open and is of a conical structure, the rear end of the suction channel is closed, the rear end of the suction channel is provided with an oblique side tube for connecting a negative pressure suction tube, and the side tube is provided with a miniature ball valve for adjusting the suction force. When the suction type endoscope is used, an endoscope passes through the endoscope channel, is fixedly connected with the suction sleeve through the magnet, is connected with the negative pressure suction tube through the side tube, and adjusts suction through the miniature ball valve. The operator can finish the operation of holding the endoscope and attracting with one hand, and the other hand uses other surgical instruments to carry out corresponding operation simultaneously, has improved neurosurgery endoscope operation's efficiency greatly.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a neuroendoscope with a suction device and a using method thereof.
Background
The neuroendoscopy is a main instrument for developing the neurosurgery endoscopic surgery, and along with the development of the surgical technology, the neuroendoscopy has wide application in the aspects of cerebrovascular diseases, craniocerebral tumors, craniocerebral fundus surgery and the like, and compared with the traditional surgery mode, the neuroendoscopy has the advantages of small trauma, clear visual field and the like when being operated, and can partially replace the traditional surgery mode in the treatment of certain craniocerebral diseases, thereby obtaining more satisfactory curative effect. In the process of using the neuroendoscope to perform surgery, other instruments are often needed to cooperate, and among them, an aspirator is one of the most commonly used instruments. The aspirator can be with blood, tissue fragment etc. the clean of gettering in the art field, guarantees that the neural scope operation field of vision is clear, is the prerequisite and the assurance that carry out the operation under the neural scope safely, accurately.
Traditional neural scope and aspirator are independent each other, and during the operation, the operator holds the neural scope in one hand, and the aspirator is held to the other hand and is attracted, treats that the art field is clear after, takes out the aspirator from the art field, trades other surgical instruments again and operates. This approach has the following problems: 1. because the hand for carrying the neuroendoscopy is relatively fixed, the other hand is required to be frequently replaced between the suction apparatus and other surgical instruments, and the continuity and the efficiency of the surgical operation are influenced; 2. under the condition that the art field bleeding speed is faster, need carry out the aspirator and continue to attract keeping the art field clear condition at the art person and carry out subsequent operations such as stanch, but the art person can't reuse third kind surgical instruments simultaneously this moment, must rely on assistant to assist and attract or stanch the operation, because neuroendoscopy operation itself is minimal access surgery, and the art field is narrow and small, and many people operate mutual interference can influence the operation effect on the contrary, causes the tissue damage even.
Disclosure of Invention
In view of the above problems, the present invention is to provide a neuroendoscope with suction function and a method for using the same, so that the operator can perform the holding and suction operations with one hand.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a neural scope with suction device which characterized in that: comprises an endoscope and an attraction sleeve; the endoscope comprises an endoscope body and an endoscope seat, the endoscope body is fixedly connected with the connecting end of the endoscope seat, an endoscope magnet is arranged at one end of the endoscope body close to the endoscope seat, and a light source interface is further arranged on the endoscope seat;
the attraction sleeve comprises an inner layer and an outer layer, the inner layer is surrounded into a thin pipeline which is an endoscope channel, the rear end of the inner side of the endoscope channel is provided with a channel magnet corresponding to the endoscope magnet, and the endoscope and the attraction sleeve are detachably connected through the endoscope magnet and the channel magnet;
a suction channel is formed between the inner layer and the outer layer, the front end of the suction channel is of an open structure, a plurality of support structures are further arranged at the open structure, and each support structure is positioned between the inner layer and the outer layer;
the rear end of the suction channel is of a closed structure, an inclined side tube is connected to the position, located above the rear end of the inner mirror, of the suction channel, a miniature ball valve used for adjusting suction force is arranged on the side tube, and the tail end of the side tube is connected with a negative pressure suction tube.
Preferably, the diameter of the endoscope channel is 5mm-7mm, the diameter of the endoscope body is 4mm-6mm, and the length of the endoscope body is 18 cm.
Preferably, the length of the suction channel is 18cm, and the diameter is 9mm-11 mm.
Furthermore, the front end of the outer layer is of a conical structure, and the rear end of the outer layer is of a cylindrical structure.
Furthermore, the connection part of the conical structure at the front end of the outer layer and the cylindrical structure at the rear end is in smooth connection with a fillet, and the radius of the fillet is 2-3 mm.
Preferably, the diameter of the opening of the conical structure of the suction channel is 7mm-9 mm.
Further, the channel magnet includes the adsorption magnet parallel with the scope passageway and with scope passageway looks vertically first spacing magnet, the spacing magnet of second, adsorption magnet is located in the scope passageway, first spacing magnet is located scope passageway rear end is outside, and with adsorption magnet's one end is associative, the spacing magnet of second is located the other end of adsorption magnet in the scope passageway.
Furthermore, the channel magnet and the attraction sleeve are of an integrated structure, and the channel magnet is fixedly connected with the attraction sleeve.
Furthermore, the channel magnet and the attraction sleeve are of a separated structure, and the channel magnet is detachably connected with the attraction sleeve.
Further, a using method of the neuroendoscope with the suction device is characterized by comprising the following steps:
s1: selecting a proper endoscope and an attraction sleeve according to the operation requirement;
s2: an endoscope passes through the endoscope channel, and the endoscope and the attraction sleeve are fixedly connected through the endoscope magnet and the channel magnet;
s3: connecting the side tube with a negative pressure suction tube;
s4: the operator is at the operation time according to the operation needs, at first through miniature ball valve regulation suction device suction size, and the mirror is held to the single hand, when showing the regional image of operation through the scope, utilizes suction device to absorb blood, sparge water, tissue fragment etc. in the operation field, guarantees that scope operation field of vision is clear, and other surgical instruments can be held to another hand simultaneously and the electricity congeals operations such as hemostasis, separation, excision tumour.
The invention has the beneficial effects that: compared with the prior art, the invention has the improvement that,
1. the neuroendoscope has the function of suction, so that an operator can complete the operation of holding and sucking with one hand, and can simultaneously use other surgical instruments with the other hand for corresponding operation, and the operator does not need to frequently replace the aspirator and other instruments;
2. the neuroendoscopy with the suction device can meet the requirements of operators on continuous suction and other operation operations, greatly improves the efficiency of the neuroendoscopy operation, and reduces bleeding and tissue injury;
3. the opening of the neuroendoscope with the suction device is designed to be in a conical structure, so that the neuroendoscope is convenient to operate in a narrow intracranial space and is beneficial to reducing tissue damage.
Drawings
Fig. 1 is a schematic structural diagram of a neuroendoscope with a suction device according to the present invention.
Fig. 2 is a schematic view of the structure of the suction cannula of the present invention.
Fig. 3 is a side view of the suction sleeve of the present invention.
Fig. 4 is a schematic structural diagram of the neuroendoscope of the present invention.
FIG. 5 is a schematic view of the position relationship between the tunnel magnet and the inner layer of the attraction sleeve according to the present invention;
fig. 6 is a side view of the tunnel magnet structure of the present invention.
Wherein: 1-endoscope, 11-endoscope body, 12-endoscope seat, 13-endoscope magnet, 14-light source interface, 2-attraction sleeve, 21-inner layer, 22-endoscope channel, 23-channel magnet, 231-attraction magnet, 232-first limit magnet, 233-second limit magnet, 24-outer layer, 25-attraction channel, 26-supporting structure, 27-side tube and 28-micro ball valve.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
The first embodiment is as follows:
referring to fig. 1-6, a neuroendoscope with a suction device comprises an endoscope 1 and a suction sleeve 2; the endoscope 1 comprises an endoscope body 11 and an endoscope base 12, the endoscope body 11 and the endoscope base 12 are of an integrated structure, and an endoscope magnet 13 is arranged at one end, close to the endoscope base 12, of the endoscope body 11; the lens base 12 is also provided with a light source interface 14; during operation, the light source interface 14 is connected with the light source, and the image in the operation field is displayed on the display in real time through the image acquisition system connected to the rear part of the microscope base 12, so that the operator can observe the image conveniently.
Further, the attraction sleeve 2 is of a double-layer hollow pipeline structure and comprises an inner layer 21 and an outer layer 24, the inner layer 21 is enclosed to form a thin pipeline which is an endoscope channel 22, a channel magnet 23 corresponding to the endoscope magnet 13 is arranged at the rear end of the inner side of the endoscope channel 22, and the endoscope 1 and the attraction sleeve 2 are detachably connected through the endoscope magnet 13 and the channel magnet 23;
preferably, the diameter of the endoscope channel 22 is 6mm, the diameter of the endoscope body 11 is 5mm, and the length is 18 cm.
Preferably, the suction channel 25 has a length of 18cm and a diameter of 10 mm.
Further, the endoscope magnet 13 is an annular magnet piece arranged around the endoscope body 11, and the endoscope body 11 is made of stainless steel and is fixedly connected with the endoscope magnet 13.
Further, the channel magnet 23 comprises an adsorption magnet 231 parallel to the endoscope channel 22 and a first limit magnet 232 and a second limit magnet 233 perpendicular to the endoscope channel 22, and the adsorption magnet 231, the first limit magnet 232 and the second limit magnet 233 are magnet pieces of an integrated structure; the adsorption magnet 231 is positioned in the endoscope channel 22, the first limit magnet 232 is positioned outside the rear end of the endoscope channel 22, the first limit magnet 232 is of an annular structure, an opening in the middle is connected with one end of the adsorption magnet 231, the whole channel magnet 23 can be clamped at the rear end of the attraction sleeve 2, and the position movement cannot occur when the endoscope 1 is installed and detached; the second limiting magnet 233 is located at the other end of the absorption magnet 231 in the endoscope channel 22, the second limiting magnet 233 is also of an annular structure, the endoscope 1 can pass through the middle opening, and the limitation of the endoscope 1 is realized by blocking the endoscope magnet 13 on the endoscope 1, so that the endoscope 1 is ensured not to slide or shift in position in the operation process; the attraction sleeve 2 is made of alloy materials, the channel magnet 23 and the attraction sleeve 2 are of an integrated structure, and the first limiting magnet 232 on the channel magnet 23 is welded at the tail end of the attraction channel 2 through laser welding, so that the channel magnet 23 is fixedly connected with the attraction sleeve.
Further, the magnetic force of the endoscope magnet 13 and the channel magnet 23 can ensure that the endoscope 1 is firmly fixed in the attraction sleeve 2 during the operation, and the endoscope 1 can be separated from the attraction sleeve 2 by the action of human force after the operation is finished, so that the rapid conversion between the common endoscope and the endoscope with the attraction device is realized.
Further, a suction channel 25 is formed between the inner layer 21 and the outer layer 24, the front end of the suction channel 25 is an open structure, a plurality of support structures 26 are further arranged at the open structure, and each support structure 26 is located between the inner layer 21 and the outer layer 24 and is used for supporting the inner layer 21 and the outer layer 24 to form a channel structure; the support structure 26 and the inner layer 21 and the outer layer 24 are of an integral structure; the support structure 26 is an alloy sheet with a width of 3 mm.
Preferably, the front end of the outer layer 24 is a conical structure, so that the operation in a narrow intracranial space is facilitated, and the damage of the suction sleeve 2 to brain tissue is reduced; the rear end of the outer layer 24 is of a cylindrical structure.
Preferably, the diameter of the opening of the conical structure of the suction channel 25 is 8 mm.
Furthermore, the junction of the conical structure at the front end of the outer layer 24 and the cylindrical structure at the rear end is a smooth connection with a fillet, and the radius of the fillet is 3 mm.
Further, the support structures 26 are four and are distributed at the opening structure in an axisymmetric manner.
The rear end of the suction channel 25 is of a closed structure, an inclined side tube 27 is connected to the suction channel 25 above the rear end of the endoscope 1, and the side tube 27 and the suction sleeve 2 are of an integrated structure; a miniature ball valve 28 for adjusting suction is arranged on the side pipe 27, and the tail end of the side pipe 27 is connected with a negative pressure suction pipe.
Further, when the neuroendoscope with the suction device is used for an endoscope hematoma removing operation of cerebral hemorrhage, the neuroendoscope with the suction device comprises the following steps:
s1: selecting a proper endoscope and an attraction sleeve according to the operation requirement;
s2: an endoscope passes through the endoscope channel, and the endoscope and the attraction sleeve are fixedly connected through the endoscope magnet and the channel magnet;
s4: connecting the side tube with a negative pressure suction tube;
s5: the operative employee is when the operation needs, at first through miniature ball valve regulation suction device suction size, and the mirror is held to the one hand, when showing the operation area image through the scope, utilizes the suction function to attract the hematoma in the operation field to clear away while observing the hematoma, guarantees that scope operation field of vision is clear, and simultaneously, bipolar coagulation forceps can be carried to the right hand, and the bleeding point of clearing away the in-process discovery to the hematoma operation of stanching.
Example two:
referring to fig. 1-6, a neuroendoscope with a suction device comprises an endoscope 1 and a suction sleeve 2; the endoscope 1 comprises an endoscope body 11 and an endoscope base 12, the endoscope body 11 and the endoscope base 12 are of an integrated structure, and an endoscope magnet 13 is arranged at one end, close to the endoscope base 12, of the endoscope body 11; the lens base 12 is also provided with a light source interface 14; during operation, the light source interface 14 is connected with the light source, and the image in the operation field is displayed on the display in real time through the image acquisition system connected to the rear part of the microscope base 12, so that the operator can observe the image conveniently.
Further, the attraction sleeve 2 is of a double-layer hollow pipeline structure and comprises an inner layer 21 and an outer layer 24, the inner layer 21 is enclosed to form a thin pipeline which is an endoscope channel 22, a channel magnet 23 corresponding to the endoscope magnet 13 is arranged at the rear end of the inner side of the endoscope channel 22, and the endoscope 1 and the attraction sleeve 2 are detachably connected through the endoscope magnet 13 and the channel magnet 23;
preferably, the diameter of the endoscope channel 22 is 6mm, the diameter of the endoscope body 11 is 5mm, and the length is 18 cm.
Preferably, the suction channel 25 has a length of 18cm and a diameter of 10 mm.
Further, the endoscope magnet 13 is an annular magnet piece arranged around the endoscope body 11, and the endoscope body 11 is made of stainless steel and is fixedly connected with the endoscope magnet 13.
Further, the channel magnet 23 comprises an adsorption magnet 231 parallel to the endoscope channel 22 and a first limit magnet 232 and a second limit magnet 233 perpendicular to the endoscope channel 22, and the adsorption magnet 231, the first limit magnet 232 and the second limit magnet 233 are magnet pieces of an integrated structure; the adsorption magnet 231 is positioned in the endoscope channel 22, the first limit magnet 232 is positioned outside the rear end of the endoscope channel 22, the first limit magnet 232 is of an annular structure, an opening in the middle is connected with one end of the adsorption magnet 231, the whole channel magnet 23 can be clamped at the rear end of the attraction sleeve 2, and the position movement cannot occur when the endoscope 1 is installed and detached; the second limiting magnet 233 is located at the other end of the absorption magnet 231 in the endoscope channel 22, the second limiting magnet 233 is also of an annular structure, the endoscope 1 can pass through the middle opening, and the limitation of the endoscope 1 is realized by blocking the endoscope magnet 13 on the endoscope 1, so that the endoscope 1 is ensured not to slide or shift in position in the operation process;
the attraction sleeve 2 is made of alloy materials, the channel magnet 23 and the attraction sleeve 2 are of a separated structure, and the channel magnet 23 is detachably connected with the attraction sleeve 2. During the use with passageway magnet 23 place scope passageway 22, first spacing magnet 232 fixes a position through adsorbing with attracting the end of sleeve pipe 2, and adsorption magnet 231 adsorbs with inlayer 21 together to make passageway magnet 23 and attract sleeve pipe 2 fixed connection, can dismantle after the use.
Further, the magnetic force of the endoscope magnet 13 and the channel magnet 23 can ensure that the endoscope 1 is firmly fixed in the attraction sleeve 2 during the operation, and the endoscope 1 and the attraction sleeve 2 can be separated by means of the action of human force after the operation is finished, so that the rapid conversion between the common endoscope and the endoscope with the attraction device is realized.
Further, a suction channel 25 is formed between the inner layer 21 and the outer layer 24, the front end of the suction channel 25 is an open structure, a plurality of support structures 26 are further arranged at the open structure, and each support structure 26 is located between the inner layer 21 and the outer layer 24 and is used for supporting the inner layer 21 and the outer layer 24 to form a channel structure; the support structure 26 and the inner layer 21 and the outer layer 24 are of an integral structure; the support structure 26 is an alloy sheet with a width of 3 mm.
Preferably, the front end of the outer layer 24 is a conical structure, so that the operation in a narrow intracranial space is facilitated, and the damage of the suction sleeve 2 to brain tissue is reduced; the rear end of the outer layer 24 is of a cylindrical structure.
Preferably, the diameter of the opening of the conical structure of the suction channel 25 is 8 mm.
Furthermore, the junction of the conical structure at the front end of the outer layer 24 and the cylindrical structure at the rear end is a smooth connection with a fillet, and the radius of the fillet is 3 mm.
Further, the support structures 26 are four and are distributed at the opening structure in an axisymmetric manner.
The rear end of the suction channel 25 is of a closed structure, an inclined side tube 27 is connected to the suction channel 25 above the rear end of the endoscope 1, and the side tube 27 and the suction sleeve 2 are of an integrated structure; a miniature ball valve 28 for adjusting suction is arranged on the side pipe 27, and the tail end of the side pipe 27 is connected with a negative pressure suction pipe.
Further, when the neuroendoscope with the suction device is used for performing the endoscopic resection operation of the tumor, the neuroendoscope with the suction device comprises the following steps:
s1: selecting a proper endoscope and an attraction sleeve according to the operation requirement;
s2: placing a channel magnet into the endoscope channel, and clamping the channel magnet with the rear end of the endoscope channel;
s3: an endoscope passes through the endoscope channel, and the endoscope and the attraction sleeve are fixedly connected through the endoscope magnet and the channel magnet;
s4: connecting the side tube with a negative pressure suction tube;
s5: the operator at the operation needs, at first through miniature ball valve regulation suction device suction size, the mirror is held to the single hand, when showing the operation region image through the scope, utilizes suction function suction operation field bleeding on one side observing the tumour tissue, keeps the art field clear, and bipolar coagulation forceps can be carried on to the right hand simultaneously, carries out hemostatic operation to the point of bleeding, also can carry out the excision of tumour tissue of getting the tumour forceps.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a neural scope with suction device which characterized in that: comprises an endoscope (1) and an attraction sleeve (2); the endoscope (1) comprises an endoscope body (11) and an endoscope seat (12), the endoscope body (11) is fixedly connected with the connecting end of the endoscope seat (12), an endoscope magnet (13) is arranged at one end, close to the endoscope seat (12), of the endoscope body (11), and a light source interface (14) is further arranged on the endoscope seat (12);
the attraction sleeve (2) comprises an inner layer (21) and an outer layer (24), the inner layer (21) is enclosed into a thin pipeline which is an endoscope channel (22), the rear end of the inner side of the endoscope channel (22) is provided with a channel magnet (23) corresponding to the endoscope magnet (13), and the endoscope (1) and the attraction sleeve (2) are detachably connected through the endoscope magnet (13) and the channel magnet (23);
a suction channel (25) is formed between the inner layer (21) and the outer layer (24), the front end of the suction channel (25) is of an open structure, a plurality of supporting structures (26) are further arranged at the open structure, and each supporting structure (26) is positioned between the inner layer (21) and the outer layer (24);
the rear end of the suction channel (25) is of a closed structure, an inclined side pipe (27) is connected to the position, located above the rear end of the endoscope (1), of the suction channel (25), a miniature ball valve (28) used for adjusting suction force is arranged on the side pipe (27), and the tail end of the side pipe (27) is connected with a negative pressure suction pipe;
the diameter of the endoscope channel (22) is 5mm-7mm, the diameter of the endoscope body (11) is 4mm-6mm, and the length of the endoscope body (11) is 18 cm;
the length of the suction channel (25) is 18cm, and the diameter is 9mm-11 mm;
the front end of the outer layer (24) is of a conical structure, and the rear end of the outer layer is of a cylindrical structure;
the connecting part of the conical structure at the front end of the outer layer (24) and the cylindrical structure at the rear end is smoothly connected with a fillet, and the radius of the fillet is 2-3 mm;
the diameter of the opening of the conical structure of the suction channel (25) is 7-9 mm;
passageway magnet (23) include with scope passageway (22) parallel adsorption magnet (231) and with scope passageway (22) looks vertically first spacing magnet (232), second spacing magnet (233), adsorption magnet (231) are located in scope passageway (22), first spacing magnet (232) are located scope passageway (22) rear end is outside, and with the one end of adsorption magnet (231) is associative, second spacing magnet (233) are located the other end of adsorption magnet (231) in scope passageway (22).
2. A neuroendoscope with an attraction device according to claim 1, characterized by: the channel magnet (23) and the attraction sleeve (2) are of an integrated structure, and the channel magnet (23) is fixedly connected with the attraction sleeve (2).
3. A neuroendoscope with an attraction device according to claim 1, characterized by: the channel magnet (23) and the attraction sleeve (2) are of a separated structure, and the channel magnet (23) and the attraction sleeve (2) are detachably connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910823924.4A CN110558922B (en) | 2019-09-02 | 2019-09-02 | Neuroendoscopy with suction device and use method thereof |
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| CN201910823924.4A CN110558922B (en) | 2019-09-02 | 2019-09-02 | Neuroendoscopy with suction device and use method thereof |
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| CN110558922B true CN110558922B (en) | 2021-11-23 |
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| CN110916598A (en) * | 2020-01-02 | 2020-03-27 | 张强 | Suction device for soft endoscope |
| CN111345938A (en) * | 2020-04-08 | 2020-06-30 | 广东省第二人民医院（广东省卫生应急医院） | Glass cutting sleeve |
| CN112023130B (en) * | 2020-08-25 | 2023-05-12 | 宁波市医疗中心李惠利医院 | Guiding device for first aid under endoscope |
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| CN112353355A (en) * | 2020-11-11 | 2021-02-12 | 深圳大学 | In-ear mirror holder and in-ear mirror assembly |
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| CN110558922A (en) | 2019-12-13 |
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