CN111870216A - Visual laryngoscope lens, lens subassembly and visual laryngoscope - Google Patents

Visual laryngoscope lens, lens subassembly and visual laryngoscope Download PDF

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Publication number
CN111870216A
CN111870216A CN202010208829.6A CN202010208829A CN111870216A CN 111870216 A CN111870216 A CN 111870216A CN 202010208829 A CN202010208829 A CN 202010208829A CN 111870216 A CN111870216 A CN 111870216A
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CN
China
Prior art keywords
laryngoscope
lens
handle
visual
patient
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
Application number
CN202010208829.6A
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Chinese (zh)
Inventor
王明仓
陈玲阳
曹建斌
黄运东
杨本全
张家智
黄梦雅
李宏博
王卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG UE MEDICAL CORP
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ZHEJIANG UE MEDICAL CORP
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Filing date
Publication date
Application filed by ZHEJIANG UE MEDICAL CORP filed Critical ZHEJIANG UE MEDICAL CORP
Priority to CN202010208829.6A priority Critical patent/CN111870216A/en
Publication of CN111870216A publication Critical patent/CN111870216A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/267Instruments 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 for the respiratory tract, e.g. laryngoscopes, bronchoscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • A61B1/0008Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00096Optical elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00142Instruments 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00163Optical arrangements

Abstract

The invention provides a visual laryngoscope lens for preoperative evaluation, which has a bending radian alpha of 0.3 to 0.4rad, and the laryngoscope lens is provided with a tube and a tongue depressor which is arranged on the tube and extends forwards compared with the tube, wherein the tangent line of the tube of the lens is inclined downwards by 30 to 33 degrees relative to the central axis of a lens handle. The disposable laryngoscope lens provided by the invention has a more gentle bending radian than the existing laryngoscope lens, so that a patient can receive examination to determine the laryngoscope exposure grade in a sitting posture state.

Description

Visual laryngoscope lens, lens subassembly and visual laryngoscope
Technical Field
The invention belongs to the field of visual medical instruments, and particularly relates to a visual laryngoscope lens and a lens assembly for preoperative evaluation and a visual laryngoscope.
Background
The trachea cannula pre-operation evaluation is an important link for the anesthesia pre-operation visit, and the evaluation plays a vital role in institutional anesthesia plan and preparation of cannula equipment. If the assessment is in place, the patient with difficult airway is found in advance before the operation, and sufficient preparation is made, so that the accident of the patient caused by the intubation accident is greatly reduced. A difficult airway refers to a clinical situation in which a patient experiences difficulty with mask ventilation or intubation of the trachea, or both, under the supervision of a regularly trained anesthesiologist. Difficult airways have obvious risk factors, and medical staff can judge whether the difficult airways are the obvious risk factors by observing the surface of a patient, but the difficult airways also have unobvious risk factors which cannot be observed externally. For example, a grade of pharyngeal structure, the modified mallamati grade or "mahi grade", a higher grade of pharyngeal structure indicates a more difficult laryngoscope reveal and grades iii to iv indicate a difficult airway. And the laryngoscope shows the grading, Cormack and Lehane divide into the level four to the difficulty of the laryngoscope show the glottis, and this laryngoscope shows the grading for the glottis grading that direct laryngoscope shows, and III to IV level suggestion intubate is difficult. Regarding pharyngeal structure grading, the airway assessment method widely adopted in clinical practice today is that a patient sits in front of medical care personnel, opens the mouth and stretches the tongue to the maximum extent, and grades others according to the pharyngeal structure that can be seen. With regard to laryngoscope reveal grading, it is necessary for the patient to lie down to facilitate insertion of the laryngoscope, grading according to the observed visualization of the glottis and epiglottis. In summary, the existing method for pre-operation evaluation of endotracheal intubation has the following defects: in the step of judging the difficult airway, the patient can be judged by sitting, and only when the laryngoscope is determined to be exposed and graded, the patient needs to lie down, so that inconvenience is brought to outpatient medical personnel and the patient.
Disclosure of Invention
In view of the above technical problems, the present invention provides a visual laryngoscope lens for preoperative evaluation, the curvature radian α of the lens is 0.3rad to 0.4 rad.
Preferably, the laryngoscope lens is provided with a tube and a tongue depressor which is arranged on the tube and extends forwards compared with the tube, and the tangent of the lens tube inclines downwards 30-33 degrees relative to the central axis of the lens handle.
Preferably, the tongue depressor extends forwards 15 mm-20 mm compared with the tube body.
Preferably, the radian of the lens is 0.313rad, and a tangent of the lens tube is inclined downward by about 32 ° with respect to a central axis of the handle.
Preferably, the tongue depressor extends forward 18mm compared to the tube.
Based on the laryngoscope lens provided above, the invention also provides a laryngoscope lens assembly, which comprises a laryngoscope lens and a blocking part arranged at the rear end of the laryngoscope lens and used for blocking virus transmission between a doctor and a patient.
Preferably, the blocking member comprises a flap which is integrally or removably fixedly connected to the laryngoscope lens.
Preferably, the tube body comprises an arc-shaped tube section matched with the physiological curvature of the oral cavity and the throat of a human body and a connecting tube section used for connecting the laryngoscope handle, the connecting tube section is detachably connected with the laryngoscope handle, and the baffle is arranged on the connecting tube section.
Preferably, the blocking plate has a blocking face towards the patient end, the blocking face being dimensioned to block at least the oronasal region of the patient.
The invention also provides a visual laryngoscope which comprises a display, a handle, a laryngoscope handle and the lens, wherein the display is arranged at the top of the handle, the laryngoscope handle is arranged at the bottom of the handle, the front end of the laryngoscope handle is provided with the visual device, and the lens is detachably sleeved on the laryngoscope handle. Visual laryngoscope for preoperative assessment
Compared with the prior art, the invention has the following beneficial effects:
the disposable laryngoscope lens provided by the invention has a more gentle bending radian than the existing laryngoscope lens, so that a patient can receive examination to determine the laryngoscope exposure grade in a sitting posture state.
In addition, the shape, the angle, the data and the length of the laryngoscope lens provided by the invention all depend on a large amount of clinical detection data, so that the laryngoscope lens is well adapted to the oral cavity structure of a human body, the flexibility of operation is improved, and the uncomfortable degree of a patient is reduced, thereby obviously improving the clinical practicability, the safety and the reliability of the tongue depressor and making the patient comfortable.
This disposable laryngoscope piece cooperation laryngoscope main part is used, can upload the picture of glottis to the electronic medical record when patient's inspection through this laryngoscope, and the different doctors of being convenient for accurately judge the patient condition.
Drawings
FIG. 1 is a schematic structural view of a visual laryngoscope according to the invention;
FIG. 2 is a schematic view of a visual laryngoscope according to the invention, shown in a disassembled configuration;
FIGS. 3-4 are schematic structural views of a laryngoscope lens and a sectional view thereof in the direction D;
fig. 5 is a schematic structural diagram of a visual laryngoscope for preoperative evaluation provided by the invention.
Detailed Description
The embodiments of the present invention will be described in detail below, and the embodiments described by referring to the drawings are exemplary only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "front", "back", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted" and "connected" should be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Example 1
Referring to fig. 4, the present embodiment provides a visual laryngoscope, which comprises a display 1, a handle 2, a laryngoscope handle 3 and the lens assembly of embodiment 1, wherein the display is disposed on the handle for being observed by a doctor, the laryngoscope handle 3 is disposed at the bottom of the handle, a visual device such as a camera is mounted at the front end of the laryngoscope handle for transmitting images in a patient to the display, and the lens 5 is detachably mounted on the laryngoscope handle.
On this basis, the present embodiment provides a visual laryngoscope lens 5 for pre-operative assessment, the lens 5 having a bending radian α of 0.3rad to 0.4 rad.
The laryngoscope lens 5 has a tube 51 and a tongue depressor 52 disposed thereon and projecting forwardly of the tube 51,
preferably, a tangent to the tube body 51 is inclined downward by 30 ° to 33 ° with respect to the central axis of the scope handle 3.
Further, the tongue depressor 52 extends forwards 15 mm-20 mm compared with the tube body 51.
In this embodiment, the lens 5 has a radius of 223mm, an arc length of 70mm (0.314 rad), and a tangent to the tube of the lens is inclined downward about 32 ° relative to the central axis of the handle (31.94 °); the tongue depressor 52 protrudes forward by 18mm compared to the tube body 51.
Can be convenient for outpatient service doctor judges whether the patient is difficult air flue to can shoot glottic picture synchronous transfer to the electronic medical record in, the patient of being convenient for when the different stages of seeing a doctor, the doctor can both accurately judge the patient condition.
The bending radian of the disposable laryngoscope lens provided by the invention is more gradual than that of the existing laryngoscope lens, so that a patient can receive examination to determine the laryngoscope exposure grade in a sitting posture state; when the patient is subjected to preliminary evaluation and monitoring, the laryngoscope exposure grade can be determined without a special hospital bed; meanwhile, the comfort degree of the patient in the diagnosis and treatment process is improved.
The shape, angle, data and length of the laryngoscope lens provided by the invention all depend on a large amount of clinical detection data, so that the laryngoscope lens is well adapted to the oral cavity structure of a human body, the flexibility of operation is improved, and the uncomfortable degree of a patient is reduced, thereby obviously improving the clinical practicability, safety and reliability of the tongue depressor and making the patient comfortable.
This disposable laryngoscope piece cooperation laryngoscope main part is used, can upload the picture of glottis to the electronic medical record when patient's inspection through this laryngoscope, and the different doctors of being convenient for accurately judge the patient condition.
Example 2
The implementation mode is further improved on the basis of the embodiment 1:
referring to fig. 1-2, the visual laryngoscope comprises a display 1, a handle 2, a laryngoscope handle 3 and a lens 5, wherein the display 1 and the laryngoscope handle 3 are arranged on the handle 2, a visual device such as a camera 31 is arranged at the front end of the laryngoscope handle 3, and the lens 5 is detachably sleeved on the laryngoscope handle 5;
referring to fig. 4, the lens 5 includes a tube body 51 for being sleeved on the laryngoscope handle and a tongue depressor 52 which is arranged on the tube body 51 and extends forward relative to the front end of the tube body 51, the tube body 51 includes an arc-shaped tube section 511 adapted to the physiological curvature of the oral cavity and the throat of a human body and a connecting tube section 512 for connecting the laryngoscope handle 3, and the connecting tube section 512 is detachably connected and matched with the laryngoscope handle 3 in a snap connection mode and the like;
based on the above visual laryngoscope, please refer to fig. 1-2 again, the present embodiment provides an improved laryngoscope lens assembly, which comprises a laryngoscope lens 5 and a blocking piece 6 disposed at the rear end of the laryngoscope lens 5 for blocking the virus transmission between the doctor and the patient as shown in the figure.
The laryngoscope lens assembly provided by the embodiment can effectively prevent virus propagation between a doctor and a patient; particularly, when a doctor performs collection throat swab detection, the laryngoscope lens assembly provided by the invention can effectively prevent other gas and liquid such as aerosol exhaled by a patient from being transmitted to the doctor, so that the infection rate of the doctor in diagnosis and treatment of viral infection diseases is obviously reduced; while also avoiding the spread of the doctor towards the patient.
Compared with the problems of high cost of protective clothing and the like, inconvenience in wearing of doctors and the like, the laryngoscope lens assembly provided by the invention can provide a preliminary isolation measure at the initial detection stage, is low in cost and convenient to use, and is convenient to popularize and apply clinically.
The arrangement form and the position of the blocking member 6 can be changed in various ways; in some embodiments, the blocking member 6 is integrally connected to the rear end of the laryngoscope lens 5, i.e. the blocking member 6 and the laryngoscope lens 5 cannot be separated, and are used singly by a doctor; in some preferred embodiments, the blocking member is fixedly connected with the laryngoscope lens in a removable way, and the accommodating space is obviously reduced; meanwhile, under the condition of no risk of virus infection, a doctor can only use the laryngoscope lens without using a blocking piece; in some embodiments, the blocking member 6 is in a limit fit with the laryngoscope lens 5, such as a snap fit, a male-female fit, or the like; referring to fig. 3-4, in one embodiment, the blocking member is a baffle 6, the baffle is between the doctor and the patient, the baffle has a blocking surface facing the patient end, and the blocking surface is designed to at least block the nose and mouth of the patient; thus, other gas and liquid such as aerosol exhaled by the mouth and the nose of the patient can be effectively blocked inside the baffle plate, wherein the inside refers to the inner side and the outer side relative to a doctor.
As mentioned above, referring to fig. 3, the lens 5 includes a tube 51 for being sleeved on the laryngoscope handle and a tongue depressor 52 disposed on the tube 51 and extending forward relative to the front end of the tube, the tube includes an arc-shaped tube section 511 adapted to the physiological curvature of the oral cavity and throat of a human body and a connecting tube section 512 for connecting the laryngoscope handle, the connecting tube section 512 is detachably connected with the laryngoscope handle; specifically, the baffle 6 is disposed on the connecting pipe section 512, thus serving to block the spread of viruses while not obstructing the visualization and tongue depressing operations; in some embodiments, the baffle 6 is removably sleeved on the connecting section of the pipe body; specifically, the baffle 6 is provided with a mounting hole 61 for the baffle 6 to be sleeved on the outer wall of the connecting pipe section 512, so that the baffle can be in close fit to avoid falling off; preferably, the baffle 6 is provided with a mounting hole 61 which extends forwards from the plane of the baffle to form a longitudinally extending cylindrical thin wall 610, and the longitudinally extending mounting hole 61 can improve the matching strength of the baffle and the connecting pipe section.
In some preferred embodiments, referring to fig. 2 and fig. 4, a limiting groove 611 is formed on an inner wall of the mounting hole 61, and the connecting pipe section is provided with a corresponding limiting protrusion (not shown), so that when the mounting hole 61 is sleeved on the connecting pipe section 512, the limiting protrusion is clamped into the limiting groove 611 to realize limiting fit between the mounting hole and the connecting pipe section, and thus, the baffle can be prevented from sliding off the lens or rotating and displacing while being conveniently taken and placed; when the laryngoscope lens is actually used, the tube body of the laryngoscope lens and the tongue depressor penetrate through the baffle mounting hole, and the limiting bulge on the tongue depressor is in limiting fit with the limiting groove of the connecting tube section; therefore, the baffle can be stably sleeved on the connecting pipe section, and the connecting pipe section is prevented from sliding off from the laryngoscope lens; in this embodiment, referring to fig. 3, a stopper 5122 is formed at the head end of the connecting pipe section 512, and when the baffle is sleeved on the connecting pipe section, the stopper 5122 is stopped at the rear side of the baffle, so that the baffle 6 is further prevented from moving towards the display, and the stability of the baffle is further improved.
In this embodiment, as shown in fig. 4, the connection pipe section 512 is a tapered pipe, the tapered pipe is disposed at the rear side of the arc pipe section 511 and integrally connected with the arc pipe section 511, and the inner wall of the installation hole is tightly attached to the tapered pipe, wherein a buckle 5121 connected with a latch of the laryngoscope handle is disposed at the inner side of the tapered pipe 512, and a limiting protrusion is disposed on the outer wall of the tapered pipe and is in limiting fit with a limiting groove on the installation hole, so that the baffle is tightly attached to the tapered pipe, and the baffle is fixed while the defect of virus propagation caused by a gap formed between the installation hole and the connection pipe section is avoided.
Further preferably, the baffle 6 is disposed substantially vertically with respect to the connecting pipe section 512, where the substantially vertical disposition includes a vertical disposition and a deviation from the vertical direction of not more than about 20 °; at this time, if the included angle between the baffle 6 and the laryngoscope lens 5 close to the doctor is too large, the face of the patient is easily pressed and uncomfortable, and the doctor is difficult to perform other operations; if the included angle is too small, the virus transmission cannot be effectively blocked. Therefore, clinical tests show that when the blocking piece and the connecting section of the laryngoscope lens are basically vertically arranged, the effect of blocking viruses can be achieved while the operation of a doctor is not hindered.
In addition, as shown in fig. 3, the baffle plate 6 provided in this embodiment has a main plate body 61 and a sub-plate body 62, wherein the sub-plate body 62 extends downward along the middle section of the main plate body 61, so that a space a for collecting operation of a doctor is left between the main plate body 61 and the sub-plate body 62; thus, if the size of the whole baffle is large, the doctor is difficult to effectively collect body fluid due to the blocking of the baffle 6; therefore, as shown in the figure, the whole baffle is arranged in an approximately inverted convex shape, and the vacant area at the side of the auxiliary plate body is used for the collection instrument to carry out collection operation; it will be appreciated that the main plate is positioned to correspond to the oronasal region of the patient as a primary active surface and the secondary plate corresponds to the position of the mandible below the oronasal region of the patient, so that a reduction in size of the secondary plate compared to the main plate does not impair the blocking effect of the virus. In this embodiment, the transition department of the main plate body 61 and the auxiliary plate body 62 adopts the arc transition 63, avoids adopting the right angle transition to cause the hand cutting phenomenon, further improves the comfort level of doctor's operation.
Specifically, baffle 6 adopt transparent material preparation to form, the process of aspect doctor's visit into patient's oral cavity is observed through this baffle, avoids blind insertion.
Due to the influence of virus infection, the laryngoscope lens 5 provided by the embodiment is a disposable product, and cross infection is effectively avoided.
The shape, angle, data, length of this lens all depend on a large amount of clinical testing data, have adapted to human oral cavity structure well, improve the flexibility ratio of operation, reduce patient's discomfort degree to make clinical practicality, security, the reliability of tongue depressor obtain showing and improving, comfortable patient, in addition, the baffle of increase has protected medical personnel.

Claims (10)

1. A visual laryngoscope lens for pre-operative assessment, wherein the lens has a bending radian a of from 0.3rad to 0.4 rad.
2. A visual laryngoscope lens as claimed in claim 1, wherein the laryngoscope lens has a barrel and a tongue depressor disposed on the barrel and projecting forwardly of the barrel, the tangent to the lens barrel being inclined downwardly at an angle of from 30 ° to 33 ° to the central axis of the handle.
3. A visual laryngoscope lens as claimed in claim 1 or claim 2, wherein the tongue depressor projects forwardly by from 15mm to 20mm compared to the barrel.
4. A laryngoscope lens according to claim 1, wherein the arc of the lens is 0.313rad and the tangent to the lens barrel is inclined downwardly at about 32 ° to the central axis of the handle.
5. A laryngoscope lens according to claim 3, wherein the tongue depressor projects forwardly by 18mm compared to the barrel.
6. A laryngoscope lens assembly, wherein the assembly comprises a laryngoscope lens as claimed in any one of claims 1 to 5 and a blocking member arranged at the rear end of the laryngoscope lens to block the transmission of viruses between a doctor and a patient.
7. The laryngoscope lens assembly as recited in claim 6, wherein the blocking member comprises a bezel that is integrally or removably secured to the laryngoscope lens.
8. The laryngoscope lens assembly as recited in claim 1, wherein the barrel includes an arcuate tube section adapted to accommodate the physiological curvature of the oral cavity and throat of the human body and a connector section for connection to the laryngoscope handle, the connector section being removably connectable to the laryngoscope handle, and the baffle being disposed on the connector section.
9. The laryngoscope lens assembly as recited in claim 1, wherein the blocking plate has a blocking face towards the patient end that is dimensioned to occlude at least the oronasal region of the patient.
10. A visual laryngoscope, characterized in that, visual laryngoscope includes display, handle, laryngoscope handle and any one of claims 1 ~ 5 the lens, wherein, the display sets up at the top of handle, and the laryngoscope handle sets up in the bottom of handle just the front end of laryngoscope handle is installed the visual ware, the lens overlap with detachable mode and establish on the laryngoscope handle.
CN202010208829.6A 2020-03-23 2020-03-23 Visual laryngoscope lens, lens subassembly and visual laryngoscope Pending CN111870216A (en)

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CN202010208829.6A CN111870216A (en) 2020-03-23 2020-03-23 Visual laryngoscope lens, lens subassembly and visual laryngoscope

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102670160A (en) * 2012-06-07 2012-09-19 台州瀚创医疗器械科技有限公司 Glidescope
CN205795639U (en) * 2016-03-22 2016-12-14 中国人民解放军第二军医大学 A kind of portable visible throat sight glass
CN109497924A (en) * 2018-12-27 2019-03-22 英特科利(江苏)医用内窥影像技术有限公司 A kind of visible laryngoscope
CN209826644U (en) * 2018-12-12 2019-12-24 徐州市中心医院 Otolaryngology inspectoscope
CN213430012U (en) * 2020-03-23 2021-06-15 浙江优亿医疗器械股份有限公司 Visual laryngoscope lens, lens assembly and visual laryngoscope for preoperative evaluation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102670160A (en) * 2012-06-07 2012-09-19 台州瀚创医疗器械科技有限公司 Glidescope
CN205795639U (en) * 2016-03-22 2016-12-14 中国人民解放军第二军医大学 A kind of portable visible throat sight glass
CN209826644U (en) * 2018-12-12 2019-12-24 徐州市中心医院 Otolaryngology inspectoscope
CN109497924A (en) * 2018-12-27 2019-03-22 英特科利(江苏)医用内窥影像技术有限公司 A kind of visible laryngoscope
CN213430012U (en) * 2020-03-23 2021-06-15 浙江优亿医疗器械股份有限公司 Visual laryngoscope lens, lens assembly and visual laryngoscope for preoperative evaluation

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Address after: 317317 Taizhou Province Economic Development Zone, Xianju, Baita District, block No. 100 million road, No. 8

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Application publication date: 20201103