OCT (optical coherence tomography) checker and checking device thereof
Technical Field
The invention relates to the technical field of medical devices, in particular to human lumen OCT (optical coherence tomography) scanning imaging detection, and provides an OCT checker and a checking device thereof.
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 eustachian tube device mainly comprises a eustachian tube blowing OCT checker and a eustachian tube balloon dilatation device. And the eustachian tube insufflation OCT inspector is introduced into the pharyngeal mouth of the eustachian tube through the nose during the use process, and air is insufflated into the eustachian tube for expansion and then inspection is carried out. However, the eustachian tube blowing-expanding OCT checker is an open tube cavity, and cannot automatically introduce an OCT catheter into the eustachian tube, and only can be pushed in by an operation, so that a patient is greatly injured, the depth cannot be directly calculated, and the checking accuracy is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an OCT checker and a checking device thereof, which can check the eustachian tube without damage without clamping the internal tissue of the eustachian tube.
One of the purposes of the invention is realized by adopting the following technical scheme:
an OCT scope comprising:
the pushing rod comprises a handle part and a rod body, and the handle part is positioned at the front end of the rod body;
the pushing rod moves back and forth along the axial direction of the fixed rod through an opening at the front end of the fixed rod;
the sleeve is fixed at the tail end of the fixing rod, and the diameter of the sleeve is smaller than that of the fixing rod;
the graduated scale is positioned on the outer peripheral wall of the rod body or the fixed rod, and the 0 graduation line of the graduated scale and the front end of the fixed rod are positioned on the same horizontal plane; the central shafts of the push rod, the fixed rod and the sleeve are positioned on the same straight line and form a cavity.
Furthermore, the fixing rod is provided with a strip-shaped clamping groove, the outer peripheral wall of the rod body is provided with a clamping block, and the rod body enters the fixing rod through the clamping block and moves up and down along the fixing rod; the clamping block and the clamping groove are staggered by rotating the pushing rod, and the clamping block abuts against the clamping groove, so that the pushing rod cannot exit from the fixed rod.
Further, the cannula tip has a predetermined arc.
Furthermore, the tail end of the pushing rod is provided with a indicating section, and the color of the indicating section is different from that of the rod body.
Furthermore, the fixing rod is also provided with a handle part, and the handle part is sleeved at the middle position of the fixing rod and comprises circular through holes positioned at two sides of 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.
Furthermore, a locking nut is arranged at the front end of the fixing rod and used for locking the position of the push rod; and the tail end of the fixing rod is provided with a fixing nut for fixing the connecting sleeve.
The second purpose of the invention is realized by adopting the following technical scheme:
an OCT examination device applied to a eustachian tube comprises a catheter and the OCT examination device, wherein the catheter penetrates through a cavity of the OCT examination device.
The OCT examination device further comprises a connector, wherein the connector is provided with a driving device, the connector 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 examination device by the driving device of the connector.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an OCT checker and a checking device thereof, which can conveniently push a catheter into or withdraw from the interior of a eustachian tube through the OCT checker, accurately acquire a tomography image corresponding to a certain depth or a target area, observe the hierarchical structure of mucosa of the eustachian tube without damaging tissues without clamping and picking up the tissues and know the pathological changes of the mucosa.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 1 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; 13. a catheter plug; 121. a clamping block; 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.
As shown in figures 1 and 2, the invention provides an OCT checker, which can be applied to checking eustachian tubes, and comprises a push rod 1, a fixed rod 2 and a sleeve 3. The push rod 1 comprises a handle part 11 and a rod body 12, wherein the handle part 11 is positioned at the front end of the rod body 12, and a user can apply a push force to control the OCT checker. The fixed rod 2 is a transparent hollow rod, and the propelling rod 1 moves back and forth along the axial direction of the fixed rod 2 through the opening at the front end of the fixed rod 2; the graduated scale is arranged on the peripheral wall of the rod body 12 or the fixed rod 2 to accurately measure the depth of the catheter entering or withdrawing. And in the initial state, the 0 graduation line of the graduated scale and the front end of the fixed rod 2 are positioned on the same horizontal plane. The sleeve 3 is fixed at the tail end of the fixing rod 2, and the diameter of the sleeve 3 is smaller than that of the fixing rod 2, so that a catheter can enter the fixing rod.
The body 12 of the push rod 1 is a hollow cylindrical channel, and the inner and outer diameters of the hollow cylindrical channel can be adjusted according to the diameter of a used catheter. 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 via 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 catheter. 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.
Example 2
The invention also discloses an OCT examination device which can be applied to the examination of the eustachian tube, and comprises a catheter and the OCT examination device in the embodiment 1, wherein the imaging unit is arranged at the tail end of the catheter. The OCT inspector is internally provided with a cavity, the catheter penetrates through the cavity of the OCT inspector, the imaging unit extends out of the OCT inspector to enter the eustachian tube for scanning, the image is transmitted to the controller, and a user can observe the image through the controller.
During the examination procedure, the catheter needs to be advanced into or withdrawn from the eustachian tube through the OCT examiner. If the moving speed is fast or slow, the catheter cannot scan a clear image. Therefore, a connector is arranged in the device, the connector is provided with a driving device, and the connector is respectively connected with the controller and the catheter. When the controller sends an entering or withdrawing command, the driving device can drive the pushing rod 1 of the OCT checker to drive the catheter to move at a constant speed, and the imaging unit of the catheter can scan the target area at a constant speed.
In addition, the invention also provides a using method of the OCT checking device, which comprises the following steps:
s1, assembling the OCT checker to form a cavity in the middle of the OCT checker; the OCT checker comprises a push rod 1, a fixed rod 2 and a sleeve 3, 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 shoot 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. After the nasal cavity and the nasopharyngeal mucosa of epianesthesia are contracted by furametpyr nasal drops and tetracaine for 3 times, the OCT examination device of the eustachian tube is led into the mouth of the eustachian tube under the nasal endoscope, and the OCT optical catheter is pushed into the eustachian tube through the examination device until the OCT optical catheter can not enter the eustachian tube 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. Meanwhile, the pushing rod 1 is rotated, so that the clamping blocks 121 on the peripheral wall of the pushing rod 1 are staggered with the clamping grooves of the fixed rod 2, and the problem that the pushing rod 1 is completely withdrawn from the fixed rod 2 due to accidental operation to cause catheter breakage or damage is solved.
And S5, if all images of the target area need to be scanned, controlling the OCT inspection device to drive the catheter to move at a constant speed through the connecting body, so that the scanning picture is clear and the observation is convenient. The manual control cannot ensure uniform motion, and therefore is realized through the connecting body. The two ends of the connector are respectively connected with the controller and the catheter, the connector is provided with a driving device, the controller sends a command of uniform motion, and the driving device is controlled to drive the catheter to move at a uniform velocity so as to scan a target area at a uniform velocity. 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.
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.