CN111150370A - OCT (optical coherence tomography) inspection method applied to eustachian tube - Google Patents

OCT (optical coherence tomography) inspection method applied to eustachian tube Download PDF

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Publication number
CN111150370A
CN111150370A CN202010041664.8A CN202010041664A CN111150370A CN 111150370 A CN111150370 A CN 111150370A CN 202010041664 A CN202010041664 A CN 202010041664A CN 111150370 A CN111150370 A CN 111150370A
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CN
China
Prior art keywords
oct
catheter
rod
checker
eustachian tube
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Pending
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CN202010041664.8A
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Chinese (zh)
Inventor
张官萍
孙晓梅
罗佳祺
顾庆于
刘天润
肖志文
张慧清
宋李烟
李百灵
高峻
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Guangzhou Winstar Medical Technology Co ltd
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Guangzhou Winstar Medical Technology Co ltd
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Priority to CN202010041664.8A priority Critical patent/CN111150370A/en
Priority to PCT/CN2020/089789 priority patent/WO2021142986A2/en
Publication of CN111150370A publication Critical patent/CN111150370A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • 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
    • A61B1/227—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 for ears, i.e. otoscopes
    • 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
    • A61B1/233—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 for the nose, i.e. nasoscopes, e.g. testing of patency of Eustachian tubes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Optics & Photonics (AREA)
  • Endoscopes (AREA)
  • Otolaryngology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention discloses an OCT (optical coherence tomography) examination method applied to a eustachian tube, which is realized by a catheter, an OCT examination device and a controller, and comprises S1, assembling the OCT examination device, and forming a cavity in the middle of the OCT examination device; s2, penetrating the catheter into the cavity of the OCT checker, and exposing the imaging unit of the catheter to the OCT checker; s3, driving the OCT checker to drive the catheter to move according to the graduated scale, and enabling an imaging unit of the catheter to be located in a target area; the graduated scale is arranged on the peripheral wall of the pushing rod or the fixed rod; s4, if only the image with the appointed depth needs to be scanned, placing a catheter plug, fixing the position of the catheter, scanning, acquiring a scanned image and uploading the scanned image to the controller; and S5, if all images of the target area need to be scanned, driving the OCT inspection device to drive the catheter to do uniform motion along the axial direction of the OCT inspection device until the scanning is finished. The invention does not need to clamp the internal tissue of the eustachian tube, and can carry out nondestructive examination on the eustachian tube.

Description

OCT (optical coherence tomography) inspection method applied to eustachian tube
Technical Field
The invention relates to the technical field of medical instruments, in particular to human body lumen OCT (optical coherence tomography) scanning imaging detection, and provides an OCT (optical coherence tomography) inspection method applied to a eustachian tube.
Background
The eustachian tube is a pipeline for communicating the tympanic cavity and the nasopharyngeal cavity and is an important component of the middle ear sound transmission mechanism. At present, the examination and evaluation aiming at the eustachian tube mainly relate to two aspects, mainly aiming at the evaluation of the ventilation and drainage states of the eustachian tube and the middle ear cavity, and the hierarchical organization structure of mucosa can not be known. Pathological biopsy of the eustachian tube needs to take part of eustachian tube tissues, and irreversible damage to the function of the eustachian tube can occur after the tissues are damaged, so that the pathological biopsy of the eustachian tube can hardly be carried out routinely in clinic, and the pathological change of the mucosa level can be known.
The apparatus aiming at the eustachian tube mainly comprises a eustachian tube insufflation catheter and a eustachian tube balloon dilatation apparatus. The eustachian tube blowing and expanding catheter is introduced into the pharyngeal mouth of the eustachian tube through the nose during use, and gas is blown into the eustachian tube to expand the eustachian tube for examination. However, the eustachian tube blowing and expanding catheter is an open tube cavity, the OCT optical fiber cannot be automatically introduced into the eustachian tube, the OCT optical fiber can only be pushed in by an operation, great damage is caused to a patient, the depth cannot be directly calculated, and the accuracy of examination is affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the OCT test method applied to the eustachian tube, which can be used for carrying out nondestructive test on the eustachian tube without clamping the internal tissues of the eustachian tube.
One of the purposes of the invention is realized by adopting the following technical scheme:
an OCT examination method applied to a eustachian tube is realized by a catheter, an OCT examination device and a controller, and comprises the following steps;
s1, assembling the OCT checker to form a cavity in the middle of the OCT checker;
s2, penetrating the catheter into the cavity of the OCT checker, and exposing the imaging unit of the catheter to the OCT checker;
s3, driving the OCT checker to drive the catheter to move according to the graduated scale, and enabling an imaging unit of the catheter to be located in a target area; the graduated scale is arranged on the peripheral wall of the pushing rod or the fixed rod of the OCT checker;
s4, if only the image with the appointed depth needs to be scanned, placing a catheter plug, fixing the position of the catheter, scanning, acquiring a scanned image and uploading the scanned image to the controller until the scanning is finished;
and S5, if all images of the target area need to be scanned, driving the OCT inspection device to drive the catheter to do uniform motion along the axial direction of the OCT inspection device until the scanning is finished.
Further, in S5, the OCT probe is driven by the connector to drive the catheter to move at a constant speed along the axial direction of the OCT probe; the connector is provided with a driving device and is respectively connected with the controller and the catheter, and the controller drives the catheter to move at a constant speed along the axial direction of the OCT checker by the driving device of the connector.
Further, assembling the OCT inspector in S1 includes:
s11, movably connecting the push rod to the front end of the fixed rod, and fixedly connecting the sleeve to the tail end of the fixed rod, so that the central axes of the push rod, the fixed rod and the sleeve are positioned on the same straight line to form a cavity.
Further, the pushing rod comprises a pushing rod, and the pushing rod comprises a handle part and a rod body, wherein the handle part is positioned at the front end of the rod body; the outer peripheral wall of the rod body is provided with a clamping block, and the rod body enters the fixed rod through the clamping block and moves up and down along the fixed rod.
Further, in S11, the step of movably connecting the pushing rod to the front end of the fixing rod includes rotating the pushing rod to make the fixture block dislocate with the slot of the fixing rod, and the fixture block abuts against the slot, so that the pushing rod cannot exit from the fixing rod.
Furthermore, the handle part comprises a pull ring and a triangular connecting block, the rod body is fixedly connected to one corner of the connecting block, the pull ring is fixed on the bottom edge of the rod body, which is opposite to the rod body, and the circle center of the pull ring and the central axis of the rod body are positioned on the same straight line; the diameter of the pull ring is smaller than the length of the bottom edge, and the pull ring and the tail end of the bottom edge have preset lengths.
Furthermore, a channel for a catheter to enter and exit the rod body is arranged on the side edge of the connecting block, and an inlet of the channel is positioned at the position where the bottom edge of the connecting block is exposed to the pull ring; the channel inlet is provided with a conduit plug for fixing the conduit, and the conduit plug is made of elastic rubber material.
Further, the step S11 of fixedly coupling the sleeve to the end of the fixing rod is to rotate a fixing nut provided at the end of the fixing rod so that the sleeve is fixedly coupled to the end of the fixing rod.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an OCT (optical coherence tomography) examination method applied to a eustachian tube, which can conveniently push a catheter into the interior of the eustachian tube or withdraw the catheter from the interior of the eustachian tube through an OCT examination device, accurately acquire a tomography image corresponding to a certain depth or a target area, observe a hierarchical structure of a mucosa of the eustachian tube without damaging tissues without clamping and acquiring pathological changes of the hierarchy structure.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1. a push rod; 11. a hand holding part; 111. a pull ring; 112. connecting blocks; 12. a rod body; 121. a clamping block; 13. a catheter plug; 13. a catheter plug; 2. fixing the rod; 21. a handle part is buckled; 22. a locking nut; 23. fixing a nut; 3. a sleeve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
The invention provides an OCT examination method applied to a eustachian tube, which is realized by an OCT examination device, a catheter and a controller, wherein the end of the catheter is provided with an imaging unit, the imaging unit extends out of the OCT examination device, enters the eustachian tube to be scanned, transmits an image to the controller, and a user can observe the image through the controller. The method specifically comprises the following steps:
s1, assembling the OCT checker to form a cavity in the OCT checker. The OCT checker comprises a push rod 1, a fixed rod 2 and a sleeve 3, specifically S11, wherein the push rod 1 is movably connected to the front end of the fixed rod 2, the sleeve 3 is fixedly connected to the tail end of the fixed rod 2, and the central axes of the push rod 1, the fixed rod 2 and the sleeve 3 are positioned on the same straight line to form a cavity.
S2, penetrating the catheter into the cavity of the OCT checker, and exposing the imaging unit of the catheter to the OCT checker so as to scan the target area.
S3, driving the OCT checker to drive the catheter to move according to the graduated scale, and enabling an imaging unit of the catheter to be located in a target area; the graduated scale is arranged on the peripheral wall of the pushing rod 1 or the fixing rod 2. Specifically, before examination, the examinee contracts the epinasale and nasopharyngeal mucosa 3 times through the nasal drops of flurandrine and tetracaine, introduces the eustachian tube OCT examination device into the eustachian tube mouth under the nasal endoscope, and pushes the OCT optical catheter into the eustachian tube through the examination device until the OCT optical catheter can not enter any more. In the use process, the distance pushed by the catheter can be measured in real time, the depth corresponding to the image shot by the catheter is recorded, and the hierarchical structure of the eustachian tube is conveniently observed and known. The catheter can be pushed by manual operation of the handle part 11 and the hand buckling part 21, and can also be controlled by a driving device.
And S4, if only the image with the appointed depth needs to be scanned, placing the catheter plug 13, fixing the position of the catheter, scanning the catheter, acquiring the scanned image and uploading the scanned image to the controller until the scanning is finished. Meanwhile, the pushing rod 1 is rotated, so that the clamping block 121 on the peripheral wall of the pushing rod 1 is staggered with the clamping groove of the fixed rod 2, the clamping block 21 abuts against the clamping groove, the pushing rod 1 cannot exit from the fixed rod 2, and the problem that the catheter is broken or damaged due to the fact that the pushing rod 1 is completely withdrawn from the fixed rod 2 due to accidental operation is avoided.
And S5, if all images of the target area need to be scanned, controlling the OCT checker to drive the catheter to make uniform motion along the axial direction of the OCT checker through the connector until the scanning is finished. The manual control cannot ensure uniform motion, and therefore is realized through the connecting body. The two ends of the connecting body are respectively connected with the controller and the catheter, the driving device is arranged on the connecting body, when the controller enters or withdraws, the driving device can drive the pushing rod 1 of the OCT checker to drive the catheter to do uniform motion, and the imaging unit of the catheter can scan the target area at a uniform speed. And taking out the device and the nasal endoscope until the scanning is finished.
The method can accurately acquire the tomography image corresponding to a certain depth or area, realize the non-invasive examination of the eustachian tube, observe the hierarchical structure of the mucosa of the eustachian tube without damaging tissues without clamping and acquiring the pathological changes of the eustachian tube.
Preferably, the size of the inner and outer diameters of the push rod 1 used in the method can be adjusted according to the diameter of the catheter used. The rod body 12 or the outer peripheral wall of the fixing rod 2 is provided with a graduated scale, and a user can accurately record the depth of the catheter entering the eustachian tube in real time by pushing the catheter into the eustachian tube through the pushing rod 1. And is displaced in the axial direction of the fixing lever 2 during the advancement of the advancing lever 1. Therefore, the fixing rod 2 is transparent, so that a user can conveniently and directly observe the position of the push rod 1 and the graduated scale. In order to make the measurement result accurate and intuitive, in the present embodiment, the scale is accurate to millimeters. And in an initial state, the scale mark 0 of the graduated scale and the front end of the fixed rod 2 are positioned on the same horizontal plane, and the moving distance of the catheter in the moving process is the scale of the pushing rod 1 exposed in the fixed rod 2. The end of the rod body 12 is provided with a schematic section, the color of the schematic section is different from that of the rod body 12, so that a user can conveniently observe the relative movement distance of the push rod 1 and the fixed rod 2 to know the advancing or withdrawing condition of the catheter. In the present embodiment, the color of the schematic segment is red, and the color of the stick body 12 is white, which visually shows the displacement length of the push stick 1.
The outer peripheral wall of the rod body 12 is provided with a clamping block 121, the fixing rod 2 is provided with a strip-shaped clamping groove, and the rod body 12 enters the clamping groove through the clamping block 121 and moves up and down along the fixing rod 2. When the clamping block 121 and the clamping groove are located in the same direction, the push rod 1 can smoothly enter the fixing rod 2. When the latch 121 is located in the slot, the push rod 1 can move along the axial direction of the fixing rod 2. When the pushing rod 1 moves to the corresponding position, the clamping block 121 and the clamping groove are staggered by rotating the pushing rod 1, the pushing rod 1 cannot be directly pulled out from the fixed rod 2, and the situation that the device fails and even the catheter is damaged due to the fact that the pushing rod 1 with the catheter directly slides out of the fixed rod 2 is effectively avoided.
A locking nut 22 is further provided at the front end of the fixing lever 2, i.e., where the fixing lever 2 is connected to the push lever 1. When the pushing rod 1 drives the guide tube to move to a preset position and the guide tube needs to be fixed, the clamping block 121 and the clamping groove are dislocated, the locking nut 22 is rotated, and the fixing rod 2 is fixed to the preset position.
For convenience of operation, a grip 11 is provided at the front end of the push rod 1, and a grip 21 is provided in the middle of the fixing rod 2. The grip portion 11 includes a pull ring 111 and a triangular connecting block 112. One corner of the connecting block 112 is fixed on the rod body 12, and the pull ring 111 is disposed at the bottom edge opposite to the rod body 12, and the center of the pull ring 111 and the central axis of the rod body 12 are kept on the same straight line, so that inaccurate observed images caused by direction change in the moving process are avoided. In the use process, the fingers exert thrust through the pull ring 111, so that the movement of the push rod 1 is conveniently and manually controlled. The handle 21 is sleeved at the middle position of the fixing rod 2 and includes two through holes. And two through holes are arranged at two sides of the fixed rod 2 and are positioned on the same horizontal plane with the hand-holding part 11, two fingers of a user are respectively fixed in the through holes in the operation process, and the other fingers pull the pull ring 111 to realize single-hand operation, so that the pushing rod 1 drives the catheter to move.
The diameter of the pull ring 111 is smaller than the length of the bottom edge of the connecting block 112, and a preset length exists between the pull ring 111 and the end of the bottom edge. A channel for the catheter to enter and exit the rod body 12 is arranged at the bottom edge of the connecting block 112, and a channel inlet is arranged at the bottom edge of the connecting block 112 exposed from the pull ring 111. A duct plug 13 made of elastic rubber material is arranged at the inlet of the channel and plays a role in fixing. When the catheter is moved to a preset position through the cavity of the OCT scope, the catheter plug 13 is placed at the entrance of the passageway, fixing the position of the catheter.
The sleeve 3 is arranged at the tail end of the fixing rod 2. The tail end of the fixing rod 2 is provided with a fixing nut 23, and the sleeve 3 is fixedly connected with the fixing rod 2. The sleeve 3 is of a long tubular design. Since the cannula 3 enters the eustachian tube through the nose, the diameter of the cannula 3 is smaller than that of the fixing rod 2, and the diameter of the cannula 3 is matched with that of the light. Have at the end of sleeve pipe 3 and predetermine the radian, guarantee that sleeve pipe 3 gets into the eustachian tube that is located the side rear from the nasal cavity unobstructed, reduce patient's injury.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (8)

1. An OCT inspection method applied to a eustachian tube is characterized by being realized by a catheter, an OCT inspector and a controller, and comprises the following steps;
s1, assembling the OCT checker to form a cavity in the middle of the OCT checker;
s2, penetrating the catheter into the cavity of the OCT checker, and exposing the imaging unit of the catheter to the OCT checker;
s3, driving the OCT checker to drive the catheter to move according to the graduated scale, and enabling an imaging unit of the catheter to be located in a target area; the graduated scale is arranged on the peripheral wall of the pushing rod or the fixed rod of the OCT checker;
s4, if only the image with the appointed depth needs to be scanned, placing a catheter plug, fixing the position of the catheter, scanning, acquiring a scanned image and uploading the scanned image to the controller until the scanning is finished;
and S5, if all images of the target area need to be scanned, driving the OCT inspection device to drive the catheter to do uniform motion along the axial direction of the OCT inspection device until the scanning is finished.
2. The OCT test method applied to the eustachian tube according to claim 1, wherein in S5, the OCT test device is driven by the connecting body to drive the catheter to make uniform motion along the axial direction of the OCT test device; the connector is provided with a driving device and is respectively connected with the controller and the catheter, and the controller drives the catheter to move at a constant speed along the axial direction of the OCT checker by the driving device of the connector.
3. The OCT inspection method of claim 2, wherein the assembling of the OCT inspector in S1 comprises:
s11, movably connecting the push rod to the front end of the fixed rod, and fixedly connecting the sleeve to the tail end of the fixed rod, so that the central axes of the push rod, the fixed rod and the sleeve are positioned on the same straight line to form a cavity.
4. The OCT inspection method applied to eustachian tubes of claim 3, wherein the push rod comprises a push rod comprising a grip portion and a rod body, the grip portion is positioned at the front end of the rod body; the outer peripheral wall of the rod body is provided with a clamping block, and the rod body enters the fixed rod through the clamping block and moves up and down along the fixed rod.
5. The OCT test method of claim 4, wherein the movably connecting the push rod to the front end of the fixation rod in S11 comprises rotating the push rod to dislocate the latch from the slot of the fixation rod, and the latch abuts against the slot to prevent the push rod from being withdrawn from the fixation rod.
6. The OCT inspection method applied to the eustachian tube according to claim 4, wherein the grip portion comprises a pull ring and a triangular connecting block, the rod body is fixedly connected to one corner of the connecting block, the pull ring is fixed on the bottom edge opposite to the rod body, and the circle center of the pull ring is positioned on the same straight line with the central axis of the rod body; the diameter of the pull ring is smaller than the length of the bottom edge, and the pull ring and the tail end of the bottom edge have preset lengths.
7. The OCT inspection method applied to the eustachian tube is characterized in that the side edge of the connecting block is provided with a channel for a catheter to enter and exit the rod body, and a channel inlet is positioned at the position where the bottom edge of the connecting block is exposed to the pull ring; the channel inlet is provided with a conduit plug for fixing the conduit, and the conduit plug is made of elastic rubber material.
8. The OCT inspection method of claim 3, wherein the step of fixedly coupling the sleeve to the distal end of the fixing rod in S11 is to rotate a fixing nut provided at the distal end of the fixing rod so that the sleeve is fixedly coupled to the distal end of the fixing rod.
CN202010041664.8A 2020-01-15 2020-01-15 OCT (optical coherence tomography) inspection method applied to eustachian tube Pending CN111150370A (en)

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CN202010041664.8A CN111150370A (en) 2020-01-15 2020-01-15 OCT (optical coherence tomography) inspection method applied to eustachian tube
PCT/CN2020/089789 WO2021142986A2 (en) 2020-01-15 2020-05-12 Oct examination method applied on eustachian tube

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CN202010041664.8A CN111150370A (en) 2020-01-15 2020-01-15 OCT (optical coherence tomography) inspection method applied to eustachian tube

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114820605A (en) * 2022-06-28 2022-07-29 广州永士达医疗科技有限责任公司 Eustachian tube OCT image recognition processing method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110974185A (en) * 2019-12-31 2020-04-10 广州永士达医疗科技有限责任公司 OCT (optical coherence tomography) checker and checking device thereof
CN212281330U (en) * 2019-12-31 2021-01-05 广州永士达医疗科技有限责任公司 OCT (optical coherence tomography) checker and checking device thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110974185A (en) * 2019-12-31 2020-04-10 广州永士达医疗科技有限责任公司 OCT (optical coherence tomography) checker and checking device thereof
CN212281330U (en) * 2019-12-31 2021-01-05 广州永士达医疗科技有限责任公司 OCT (optical coherence tomography) checker and checking device thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114820605A (en) * 2022-06-28 2022-07-29 广州永士达医疗科技有限责任公司 Eustachian tube OCT image recognition processing method and device
CN114820605B (en) * 2022-06-28 2022-09-20 广州永士达医疗科技有限责任公司 Eustachian tube OCT image recognition processing method and device

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