An OCT checker and its inspection device

Abstract

The present invention discloses an OCT checker, which includes a push rod comprising a handgrip portion and a rod body, wherein the handgrip portion is located at the front end of the rod body; a fixed rod which is in a transparent hollow shape, and the push rod is displaced back and forth along the axial direction of the fixed rod through the front end opening of the fixed rod; a scale which is located on the outer peripheral wall of the rod body or the fixed rod, and the 0 scale line of the scale is in the same horizontal plane as the front end of the fixed rod; a sleeve which is fixed to the end of the fixed rod, and the diameter of the sleeve is smaller than the diameter of the fixed rod. The present invention also discloses an OCT inspection device applied to the eustachian tube, which includes a catheter and the above-mentioned OCT checker, and the catheter penetrates through the cavity of the OCT checker. The device provided by the present invention does not need to clamp the internal tissue of the eustachian tube and can inspect the eustachian tube without damage.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to OCT scanning imaging detection of human body lumens, and provides an OCT checker and an inspection device thereof. Background Art

[0002] The eustachian tube is a duct that communicates the tympanic cavity and the nasopharyngeal cavity and is an important part of the middle ear sound conduction mechanism. At present, the examination and evaluation of the eustachian tube mainly involve two aspects, mainly the evaluation of the ventilation and drainage status of the eustachian tube and the middle ear cavity, and the hierarchical tissue structure of the mucosa cannot be understood. For the pathological biopsy of the eustachian tube, part of the eustachian tube tissue needs to be taken, and irreversible damage to the function of the eustachian tube may occur after the tissue defect. Therefore, clinically, pathological biopsy of the eustachian tube is almost never routinely performed to understand the pathological changes of its mucosal layer.

[0003] The devices for the eustachian tube mainly include an eustachian tube insufflation OCT checker and an eustachian tube balloon dilation device. When the eustachian tube insufflation OCT checker is used, it is introduced into the pharyngeal orifice of the eustachian tube through the nose, and gas is blown into the eustachian tube for dilation before examination. However, the eustachian tube insufflation OCT checker is an open lumen and cannot automatically introduce the OCT catheter into the eustachian tube. It can only be pushed in surgically, which causes great damage to the patient and cannot directly calculate the depth, affecting the accuracy of the examination. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an OCT checker and an inspection device thereof, which can inspect the eustachian tube without damage without taking the internal tissue of the eustachian tube.

[0005] One of the purposes of the present invention is achieved by adopting the following technical solutions:

[0006] An OCT checker, comprising:

[0007] A push rod, including a handshake part and a rod body, and the handshake part is located at the front end of the rod body;

[0008] A fixed rod, and the push rod moves back and forth along the axial direction of the fixed rod through the front end opening of the fixed rod;

[0009] A sleeve, fixed to the end of the fixed rod, and the diameter of the sleeve is smaller than the diameter of the fixed rod;

[0010] A scale, located on the outer peripheral wall of the rod body or the fixed rod, and the 0 scale line of the scale is in the same horizontal plane as the front end of the fixed rod; the central axes of the push rod, the fixed rod and the sleeve are on the same straight line and form a cavity.

[0011] Furthermore, the fixing rod is provided with a long slot, and the outer peripheral wall of the rod body is provided with a block, and the rod body enters the fixing rod through the block and moves up and down along the fixing rod; the block and the slot are misaligned by rotating the push rod, and the block abuts against the slot, so that the push rod cannot withdraw from the fixing rod.

[0012] Furthermore, the end of the sleeve has a preset curvature.

[0013] Furthermore, a schematic segment is provided at the end of the propulsion rod, and the color of the schematic segment is different from the color of the rod body.

[0014] Furthermore, the fixing rod is also provided with a buckle portion, and the buckle portion is sleeved at the middle position of the fixing rod and includes circular through holes located on both sides of the fixing rod.

[0015] Furthermore, the handshake portion includes a pull ring and a triangular connecting block, the rod body is fixedly connected to a corner of the connecting block, the pull ring is fixed to the bottom edge directly opposite the rod body, and the center of the pull ring and the central axis of the rod body are located on the same straight line; the diameter of the pull ring is smaller than the length of the bottom edge, and there is a preset length between the pull ring and the end of the bottom edge.

[0016] Furthermore, a channel for the catheter to enter and exit the rod body is provided on the side of the connecting block, and the channel entrance is located at the position where the bottom edge of the connecting block is exposed to the pull ring; a catheter plug for fixing the catheter is provided at the channel entrance, and the catheter plug is made of elastic rubber material.

[0017] Furthermore, a locking nut is provided at the front end of the fixing rod for locking the position of the pushing rod; and a fixing nut is provided at the end of the fixing rod for fixing the connecting sleeve.

[0018] The second object of the present invention is achieved by adopting the following technical solution:

[0019] An OCT inspection device applied to Eustachian tube comprises a catheter and the OCT inspector as described above, wherein the catheter passes through a cavity of the OCT inspector.

[0020] Furthermore, it also includes a connector, which is provided with a driving device. The connector is respectively connected to the controller and the catheter. The controller drives the catheter to move at a uniform speed along the axial direction of the OCT detector through the driving device of the connector.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides an OCT checker and its inspection device, which can conveniently push a catheter into or withdraw it from the internal part of the eustachian tube through the OCT checker, accurately obtain tomographic scan images corresponding to a certain depth or target area, and observe the hierarchical structure of the mucosa of the eustachian tube without damage and understand its pathological changes without taking tissue samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of Embodiment 1 provided by the present invention;

[0024] Figure 2 is a schematic structural diagram of Embodiment 1 provided by the present invention;

[0025] In the figure: 1. Pushing rod; 11. Handgrip part; 111. Pulling ring; 112. Connecting block; 12. Rod body; 13. Catheter plug; 121. Clamping block; 13. Catheter plug; 2. Fixed rod; 21. Hand-holding part; 22. Locking nut; 23. Fixing nut; 3. Sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0027] As Figure 1 , 2 shown, the present invention provides an OCT checker applicable to the inspection of the eustachian tube, including a pushing rod 1, a fixed rod 2 and a sleeve 3. The pushing rod 1 includes a handgrip part 11 and a rod body 12. The handgrip part 11 is located at the front end of the rod body 12 to facilitate the user to apply a pushing force to control the OCT checker. The fixed rod 2 is a transparent hollow rod, and the pushing rod 1 can move back and forth along the axial direction of the fixed rod 2 through the front-end opening of the fixed rod 2. A scale is provided on the outer peripheral wall of the rod body 12 or the fixed rod 2 to accurately measure the depth of the catheter entering or withdrawing. In the initial state, the 0 scale line of the scale is in the same horizontal plane as the front end of the fixed rod 2. The sleeve 3 is fixed to the end of the fixed rod 2, and the diameter of the sleeve 3 is smaller than that of the fixed rod 2 to allow the catheter to enter.

[0028] The rod body 12 of the push rod 1 is a hollow cylindrical channel, and its inner and outer diameters can be adjusted according to the diameter of the catheter used. A scale is provided on the outer peripheral wall of the rod body 12 or the fixed rod 2. When the user advances the catheter into the eustachian tube through the push rod 1, the depth of the catheter entering the eustachian tube can be accurately and real-time recorded. During the process of advancing the push rod 1, displacement occurs along the axial direction of the fixed rod 2. Therefore, the fixed rod 2 is transparent to facilitate the user to directly see the position of the push rod 1 and directly observe the scale. In order to make the measurement result accurate and intuitive, in this embodiment, the scale is accurate to millimeters. And in the initial state, the 0 scale line of the scale is in the same horizontal plane as the front end of the fixed rod 2. Then, during the movement process, the distance that the catheter moves is the scale of the push rod 1 exposed in the fixed rod 2. A indicating section is provided at the end of the rod body 12. The color of the indicating section is different from that of the rod body 12, which is convenient for the user to observe the relative movement distance between the push rod 1 and the fixed rod 2 and understand the situation of the catheter being advanced or withdrawn. In this embodiment, the color of the indicating section is red and the color of the rod body 12 is white, which intuitively shows the displacement length of the push rod 1.

[0029] A clamping block 121 is provided on the outer peripheral wall of the rod body 12, and the fixed rod 2 is provided with a long strip-shaped card slot. The rod body 12 enters the card slot through the clamping block 121 and displaces up and down along the fixed rod 2. When the clamping block 121 and the card slot are in the same direction, the push rod 1 can smoothly enter the fixed rod 2. When the clamping block 121 is located in the card slot, the push rod 1 can move along the axial direction of the fixed rod 2. When the push rod 1 moves to the corresponding position, the push rod 1 is rotated to make the clamping block 121 and the card slot misaligned, and the push rod 1 cannot be directly withdrawn from the fixed rod 2, effectively avoiding the situation that the push rod 1 with the catheter directly slides out of the fixed rod 2, resulting in the failure of the device or even damage to the catheter.

[0030] A locking nut 22 is also provided at the front end of the fixed rod 2, that is, at the connection between the fixed rod 2 and the push rod 1. When the push rod 1 drives the catheter to move to a predetermined position and the catheter needs to be fixed, the clamping block 121 and the card slot are misaligned, and the locking nut 22 is rotated to fix the fixed rod 2 to the preset position.

[0031] For the convenience of operation, a hand-holding part 11 is provided at the front end of the push rod 1, and a hand-holding part 21 is provided in the middle of the fixed rod 2. The hand-holding part 11 includes a pull ring 111 and a triangular connecting block 112. One corner of the connecting block 112 is fixed to the rod body 12, while the pull ring 111 is arranged on 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 located on the same straight line to avoid inaccurate images during observation caused by a change in direction during movement. During use, the finger applies a thrust force through the pull ring 111 to facilitate manual control of the movement of the push rod 1. The hand-holding part 21 is sleeved on the middle position of the fixed rod 2 and includes two through holes. The two through holes are arranged on both sides of the fixed rod 2 and are on the same horizontal plane as the hand-holding part 11. During operation, the user fixes two fingers in the through holes respectively, and pulls the pull ring 111 with the other fingers, enabling single-handed operation to realize the movement of the push rod 1 to drive the catheter.

[0032] The diameter of the pull ring 111 is smaller than the length of the bottom edge of the connecting block 112, and there is a preset length 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 provided at the bottom edge of the connecting block 112, and the channel entrance is arranged at the position where the bottom edge of the connecting block 112 is exposed outside the pull ring 111. A catheter plug 13 is arranged at the channel entrance and is made of elastic rubber material for fixing. When the catheter moves to a preset position through the cavity of the OCT checker, the catheter plug 13 is placed at the channel entrance to fix the position of the catheter.

[0033] The sleeve 3 is arranged at the end of the fixed rod 2. A fixing nut 23 is arranged at the end of the fixed rod 2 to fixedly connect the sleeve 3 and the fixed rod 2. The sleeve 3 is designed as a long tube. Since the sleeve 3 will enter the eustachian tube through the nose, the diameter of the sleeve 3 is smaller than that of the fixed rod 2, and the diameter of the sleeve 3 is adapted to the diameter of the catheter. The end of the sleeve 3 has a preset arc to ensure the smooth passage of the sleeve 3 from the nasal cavity into the eustachian tube located at the side rear, reducing the injury to the patient.

[0034] Embodiment 2

[0035] The present invention also discloses an OCT inspection device, which can be applied to the inspection of the eustachian tube and includes a catheter and the OCT checker in Embodiment 1. An imaging unit is provided at the end of the catheter. A cavity is arranged in the OCT checker, and the catheter penetrates through the cavity of the OCT checker, extending the imaging unit outside the OCT checker and into the eustachian tube for scanning, and transmitting the image to the controller. The user can observe the image through the controller.

[0036] During the inspection process, the catheter needs to be inserted into or withdrawn from the eustachian tube through the OCT inspector. If the movement speed is sometimes fast and sometimes slow, the catheter cannot scan clear images. Therefore, a connecting body is externally provided in the device. The connecting body is provided with a driving device, and the connecting body is respectively connected to the controller and the catheter. When the controller issues an entry or withdrawal command, the driving device can drive the push rod 1 of the OCT inspector 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.

[0037] In addition, the present invention also provides a method for using the OCT inspection device, which specifically includes the following steps:

[0038] S1. Assemble the OCT inspector to form a cavity in the middle of the OCT inspector; the OCT inspector includes a push rod 1, a fixed rod 2 and a sleeve 3. The push rod 1 is movably connected to the front end of the fixed rod 2, and the sleeve 3 is fixedly connected to the end of the fixed rod 2, so that the central axes of the push rod 1, the fixed rod 2 and the sleeve 3 are on the same straight line to form a cavity.

[0039] S2. Pass the catheter through the cavity of the OCT inspector to expose the imaging unit of the catheter on the OCT inspector for photographing the target area.

[0040] S3. Drive the OCT inspector to drive the catheter to move according to the scale, so that the imaging unit of the catheter is located in the target area; the scale is arranged on the outer peripheral wall of the push rod 1 or the fixed rod 2. After the nasal cavity and nasopharyngeal mucosa of the subject are contracted and superficially anesthetized 3 times with furacilin nasal drops and tetracaine, the eustachian tube OCT inspection device is introduced into the eustachian tube orifice under nasal endoscopy, and the OCT optical catheter is pushed into the eustachian tube through this inspector until it can no longer enter. During the use process, the distance of the catheter advancement can be measured in real time, and the depth corresponding to the image captured by it can be recorded to facilitate observing and understanding the hierarchical structure of the eustachian tube. The catheter can be advanced manually by cooperating the hand-held part 11 and the buckle part 21, or can be controlled by the driving device.

[0041] S4. If only the image of the specified depth needs to be scanned, place the catheter plug 13 to fix the position of the catheter, and the catheter scans to obtain the scanned image and upload it to the controller. At the same time, rotate the push rod 1 to misalign the block 121 on the outer peripheral wall of the push rod 1 with the slot of the fixed rod 2 to avoid the problem that the push rod 1 is completely withdrawn from the fixed rod 2 due to accidental operation, resulting in catheter breakage or damage.

[0042] S5. If it is necessary to scan all the images of the target area, the OCT inspector is controlled by the connecting body to drive the catheter to move at a constant speed, ensuring a clear scanning image for easy observation. Manual control cannot guarantee a constant speed, so it is achieved through the connecting body. The two ends of the connecting body are respectively connected to the controller and the catheter, and a driving device is arranged on the connecting body. The controller sends a command for constant-speed movement to control the driving device to drive the catheter to move at a constant speed and scan the target area at a constant speed. Until the scanning is completed, the device and the nasal endoscope are taken out.

[0043] This method can accurately obtain tomographic scanning images corresponding to a certain depth or area, realize non-invasive examination of the eustachian tube, and observe the hierarchical structure of the mucosa of the eustachian tube without damage without taking tissue samples, so as to understand its pathological changes.

[0044] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An OCT checker, characterized in that, Comprising: A push rod, including a grip portion and a rod body, wherein the grip portion is located at the front end of the rod body; A fixed rod, and the push rod is displaced back and forth along the axial direction of the fixed rod through an opening at the front end of the fixed rod; A sleeve, fixed to the end of the fixed rod, and the diameter of the sleeve is smaller than that of the fixed rod; A scale, located on the outer peripheral wall of the rod body or the fixed rod, and the 0 scale line of the scale is in the same horizontal plane as the front end of the fixed rod; the central axes of the push rod, the fixed rod and the sleeve are on the same straight line and form a cavity; The grip portion includes a pull ring and a triangular connecting block, the rod body is fixedly connected to a corner of the connecting block, the pull ring is fixed to the bottom edge opposite to the rod body, and the center of the circle of the pull ring is on the same straight line as the central axis of the rod body; the diameter of the pull ring is smaller than the length of the bottom edge, and there is a preset length between the end of the pull ring and the bottom edge; A channel for the catheter to enter and exit the rod body is provided on the side of the connecting block, and the channel entrance is located at the position where the bottom edge of the connecting block is exposed outside the pull ring; a catheter plug for fixing the catheter is provided at the channel entrance, and the catheter plug is made of elastic rubber material; A locking nut is provided at the front end of the fixed rod for locking the position of the push rod; a fixing nut is provided at the end of the fixed rod for fixedly connecting the sleeve.

2. The OCT checker according to claim 1, characterized in that, The fixed rod is provided with a long strip-shaped card slot, and a card block is provided on the outer peripheral wall of the rod body. The rod body enters the fixed rod through the card block and is displaced up and down along the fixed rod; by rotating the push rod, the card block is misaligned with the card slot, and the card block abuts against the card slot, so that the push rod cannot withdraw from the fixed rod.

3. An OCT checker according to claim 1, characterized in that, The end of the sleeve has a preset radian.

4. An OCT checker according to claim 1, characterized in that, A indicating section is provided at the end of the push rod, and the color of the indicating section is different from that of the rod body.

5. An OCT checker according to claim 1, characterized in that, The fixed rod is further provided with a hand-holding portion, and the hand-holding portion is sleeved at the middle position of the fixed rod and includes circular through holes on both sides of the fixed rod.

6. An OCT examination device applied to the eustachian tube, characterized in that, Comprising a catheter and an OCT detector according to any one of claims 1 to 5, and the catheter penetrates through the cavity of the OCT detector.

7. The OCT inspection device applied to the eustachian tube according to claim 6, characterized in that, It further includes a connecting body, the connecting body is provided with a driving device, the connecting body is respectively connected to the controller and the catheter, and the controller drives the catheter to displace uniformly along the axial direction of the OCT detector through the driving device of the connecting body.

Images