Small probe device for oral mucosa OCT (optical coherence tomography) image acquisition

Abstract

The utility model provides a small-sized probe device for oral mucosa OCT (optical coherence tomography) image acquisition, which comprises a front end part and a handle which are sequentially arranged from near to far according to the distance from an oral examination part, and the handle and the probe part are fixedly connected into a whole; the front end part comprises a probe and a sheath body which are sequentially arranged from near to far according to the distance from the front end part to an oral examination part, the probe is arranged at the end part of the sheath body, the outer diameter part of the sheath body is detachably connected with a tooth clamp and a chin support, and the chin support has three rotational degrees of freedom; a focusing screw and a convenient button are arranged on the handle, the focusing screw is in light communication with the probe, and the convenient button is electrically connected with the probe. The OCT imaging device is simple and reasonable in structure and high in integrity, the OCT imaging quality is improved, and convenience is brought to operation due to the arrangement of the convenient button; the operation accuracy of the OCT probe is improved, and the efficiency of OCT examination and image acquisition is improved; the to-be-detected tissue is accurately positioned; the definition of collected images is improved, and the accuracy and stability of OCT examination and collection images are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a small probe device for collecting oral mucosa OCT images. Background Technique

[0002] Optical Coherence Tomography (OCT) is a non-invasive real-time imaging method that can provide three-dimensional (3D) high-resolution microscale images. In the past decade, the application of OCT in the field of oncology has developed vigorously. OCT imaging has been applied to a wide range of malignant tumor imaging, including malignant tumors occurring in the breast, brain, bladder, gastrointestinal tract, respiratory tract, reproductive tract, skin, and oral cavity, etc.

[0003] OCT imaging was initially used to guide biopsies, intraoperative evaluation of tumor margins and lymph nodes, and early detection of small lesions that are usually invisible to the naked eye, for the early clinical detection and intervention of malignant tumors. In recent years, the potential effectiveness of OCT in oral medicine has been widely studied. Some ex vivo and in vivo studies have compared the OCT images of normal mucosa with those of suspected oral squamous cell carcinoma (OSCC) lesions, providing useful potential diagnostic indicators for the progressive tissue transformation of normal oral epithelium to early invasive carcinoma.

[0004] When OCT is used for real-time high-resolution microscale imaging of oral tissues, a probe is required. This probe can transmit near-infrared laser to local tissues and receive the transmitted reflected interference light, and observe the three-dimensional optical coherence tomography image of a certain depth of local tissues in real time. While showing the diseased tissues to patients, it is more conducive to the clinical diagnosis and treatment behavior of oral doctors.

[0005] However, when the current OCT probe is applied to observe and image the oral mucosa in a patient's mouth, the following disadvantages and difficult problems exist:

[0006] 1. The OCT detection imaging probe needs to be fully and tightly attached to and stable with the local oral mucosa tissue to achieve high imaging quality and stable images, and the deep structure and cell imaging of local diseased tissues can be clearer. However, due to the fact that oral tissues are usually prone to slight movement, and the range of diseased tissues is usually small, when the existing OCT probe is used under the conditions of slight movement of oral tissues and activities of the patient's oral cavity and head, the scanning result is affected by the movement of the probe during acquisition, reducing the quality of OCT imaging.

[0007] 2. When the existing OCT probe collects images, in order to ensure the position accuracy when collecting local tissue images, it is necessary for another assistant to operate the computer program to click the start imaging. When operating alone, one hand is needed to assist in fixing the oral tissue, and the other hand holds the probe, so there is no extra hand to click the start button of the computer imaging program; if forced to change hands to operate on the computer, the movement of the probe during the hand change will cause inaccurate collection of the acquired image, and it is impossible to ensure the accuracy and stability of the subsequent acquired part images.

[0008] 3. When the existing OCT probe collects images, the slight movement of the doctor's hand will also cause instability and inaccuracy of the collected images.

[0009] 4. When the existing OCT probe collects OCT images, due to the relatively dark environment in the oral cavity, generally external auxiliary lighting is required to clearly observe the surface of the oral tissue. When placed on the oral mucosa surface, the external lighting cannot reach, and it is impossible to observe the collection site and accurately locate the lesion area, resulting in inaccurate collection sites.

[0010] 5. When the existing OCT probe detects local tissues, when imaging requires positioning, it cannot perform real-time imaging and rapid focusing. It needs to be focused on the computer, which is prone to inaccurate focusing and results in blurred collected images.

[0011] Therefore, there is an urgent need to design a small probe device for oral mucosa OCT image acquisition with reasonable structure, convenient operation, high efficiency and accuracy to solve the above-mentioned difficulties and disadvantages existing in the existing OCT examination operations. Summary of the Utility Model

[0012] In view of this, the purpose of the present utility model is to design a small probe device for oral mucosa OCT image acquisition, improve the rationality of the structural design, design components for fixing the probe and stabilizing the patient's oral cavity and reducing head movement, improve the quality of OCT imaging, and free up one hand of the doctor to solve the problem that doctors need to operate with both hands during current OCT examinations, set convenient buttons to bring convenience to doctors' operations; add components for auxiliary stability and auxiliary retention to assist in improving the accuracy of OCT probe operations and the efficiency of collecting images during OCT examinations; set up a fill light for supplementary lighting and assist the camera to accurately position the tissue to be detected; set up a real-time imaging convenient focusing screw to improve the clarity of the collected images, so as to effectively improve the accuracy and stability of collecting images during OCT examinations.

[0013] The present utility model provides a small probe device for oral mucosa OCT image acquisition, including: a front end part and a handle arranged in order from near to far according to the distance from the oral examination site, and the handle is fixedly connected to the front end part as a whole;

[0014] Among them, the front end part includes: a probe and a sheath body arranged in sequence from near to far according to the distance from the oral examination site. The probe is arranged at the end of the sheath body. A tooth clip and a mental bracket are detachably connected to the outer diameter part of the sheath body. The mental bracket has three rotational degrees of freedom.

[0015] A focusing screw and a convenient button are arranged on the handle. The focusing screw is optically connected to the probe, and the convenient button is electrically connected to the probe. The focusing screw facilitates the operator to adjust the focal length of the probe and better collect images.

[0016] Further, two fixing rings are sleeved on the outer diameter part of the sheath body in sequence along the direction from near to far from the probe. The inner diameter of the fixing ring is adjustable. The tooth clip is fixedly connected to the lower part of the fixing ring close to the probe, and a long rod is fixedly connected to the lower part of the fixing ring far from the probe. The end of the long rod is a spherical structure, and a universal swivel head is rotatably connected to the spherical structure. A short rod is fixedly connected to the universal swivel head, and the mental bracket is fixedly connected to the end of the short rod.

[0017] Adjusting the universal swivel head can adjust the position of the mental bracket and fix the mental bracket on the mental region, thereby enhancing the stability of the probe.

[0018] Further, set screws are respectively arranged on the two fixing rings, and the set screws adjust the tightness between the fixing ring and the sheath body.

[0019] When the set screw on the fixing ring close to the probe is loosened, the fixing ring close to the probe can be adjusted to an appropriate position on the sheath body, and when tightened, the fixing ring close to the probe can be fixed on the sheath body. While adjusting the position of the fixing ring far from the probe, the tooth clip can be adjusted to an appropriate position to clamp the teeth to maintain the stability of the probe.

[0020] When the set screw on the fixing ring far from the probe is loosened, the fixing ring far from the probe can be adjusted to an appropriate position on the sheath body, and when tightened, the fixing ring far from the probe can be fixed on the sheath body.

[0021] Further, the probe includes: glass, a supplementary light, a pinhole camera and a laser scanning device; the supplementary light is located outside the outer circle of the glass; the pinhole camera and the laser scanning device are located inside the covered area of the glass.

[0022] The supplementary light can illuminate the inside of the mouth and the collection site. The pinhole camera can photograph the situation of the diseased part inside the mouth and transmit it to the computer to more intuitively determine the diseased part; the laser scanning device scans the diseased part to collect images.

[0023] Further, an optical transmission lens and a galvanometer scanning mirror GS are disposed inside the probe, and the optical transmission lens is optically connected to the galvanometer scanning mirror GS.

[0024] Further, the convenient buttons include: a preview key and a start key, and both the preview key and the start key are electrically connected to the fill light, the laser scanning device, and the pinhole camera.

[0025] Pressing the preview key can start the fill light, the laser scanning device, and the pinhole camera. After determining the lesion site, pressing the start key can perform the acquisition, and the acquisition ends after reaching the set time.

[0026] Further, there are two groups of the optical transmission lenses. One group is close to the glass of the probe, and the other group is close to the focusing screw; the galvanometer scanning mirror GS is disposed between the two groups of optical transmission lenses.

[0027] Further, the tooth clamp is replaced with a fixing structure the same as that of the long rod, the universal swivel head, the short rod, and the chin support.

[0028] The tooth clamp adopting this structural form is applicable to the situation where no available fixing site can be found in the oral cavity due to reasons such as tooth defect, looseness, and loss. The extraoral fixing sites of this structural form include: bilateral mandibular angles, bilateral external auditory canals, vertex frontal, occipital part, and any combination thereof.

[0029] Further, there is a set included angle between the handle and the sheath body, which is convenient for the operator to hold and operate. Preferably, the included angle is set to 90° - 120°.

[0030] Further, both the tooth clamp and the chin support adopt a medical plastic structure. Preferably, the medical plastic structure selects polypropylene PP.

[0031] Polypropylene PP is a thermoplastic synthetic resin with excellent properties. It is a colorless, semi - transparent thermoplastic lightweight general - purpose plastic, having chemical resistance, heat resistance, electrical insulation, high - strength mechanical properties, and good high - wear - resistance processing properties, etc., and is widely used in the production of medical devices.

[0032] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0033] The small probe device for oral mucosa OCT image acquisition provided by the present utility model has a simple and reasonable structure, strong integrity. By designing components for fixing the probe, stabilizing the patient's oral cavity and reducing head movement, the quality of OCT imaging is improved, and one hand of the doctor is liberated, effectively solving the problem that doctors need to operate with both hands during current OCT examinations. Convenient buttons are set, which brings convenience to the doctor's operation; Components for auxiliary stabilization and auxiliary retention are added to assist in improving the accuracy of OCT probe operation, and the efficiency of OCT examination for image acquisition is increased; A supplementary light and a camera supplementary light are set to accurately locate the tissue to be detected; A real-time imaging convenient focusing screw is set to improve the clarity of the acquired image, effectively improving the accuracy and stability of OCT examination for image acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0035] Figure 1 is the overall structural schematic diagram of a small probe device for oral mucosa OCT image acquisition of the present utility model;

[0036] Figure 2 is the external structural schematic diagram of the probe of the embodiment of the present utility model;

[0037] Figure 3 is the internal structural schematic diagram of the probe of the embodiment of the present utility model;

[0038] Figure 4 is the structural schematic diagram of the handle part of the embodiment of the present utility model.

[0039] The reference numerals in the drawings are marked as:

[0040] 1, set screw; 2, fixing ring; 3, tooth clip; 4, long rod; 5, universal swivel head; 6, short rod; 7, chin rest; 8, focusing screw; 9, probe; 10, handle; 21, glass; 22, supplementary light; 23, pinhole camera; 24, laser scanning device; 31, optical transmission lens; 32, galvanometer scanning mirror GS; 101, convenient button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] The embodiments of the present invention will be specifically described below with reference to the drawings:

[0045] The embodiments of the present invention provide a small probe device for oral mucosa OCT image acquisition. As shown in Figure 1 the figure, it includes a front end part and a handle 10 arranged in sequence from near to far according to the distance from the oral examination site. The handle 10 is fixedly connected to the front end part as a whole. Among them, the front end part includes a probe 9 and a sheath body arranged in sequence from near to far according to the distance from the oral examination site. The probe 9 is arranged at the end of the sheath body. The outer diameter part of the sheath body is detachably connected with a tooth clip 3 and a chin support 7. A focusing screw 8 and a convenient button 101 are arranged on the handle 10 (as shown in Figure 4 the figure). The focusing screw 8 is optically connected to the probe 9, and the convenient button 101 is electrically connected to the probe 9. The focusing screw 8 facilitates the operator to adjust the focal length of the probe 9 and better acquire images.

[0046] Two fixing rings 2 are successively sleeved on the outer diameter part of the sheath body along the direction from near to far from the probe 9, and the inner diameter of the fixing ring 2 is adjustable; the tooth clip 3 is fixedly connected to the lower part of the fixing ring 2 close to the probe 9, and a long rod 4 is fixedly connected to the lower part of the fixing ring 2 far from the probe 9. The end of the long rod 4 is a spherical structure, and a universal swivel head 5 is rotatably connected to the spherical structure. A short rod 6 is fixedly connected to the universal swivel head 5, and a chin support 7 is fixedly connected to the end of the short rod 6.

[0047] Adjusting the universal swivel head 5 can adjust the position of the chin support 7, and the chin support 7 has three rotational degrees of freedom; fixing the chin support 7 on the chin enhances the stability of the probe 9. Preferably, both the tooth clip 3 and the chin support 7 are made of medical-grade polypropylene PP structure.

[0048] Locking screws 1 are respectively arranged on the two fixing rings 2, and the locking screws 1 adjust the locking degree between the fixing ring 2 and the sheath body. When the locking screw 1 on the fixing ring 2 close to the probe 9 is loosened, the fixing ring 2 close to the probe 9 can be adjusted to a suitable position on the sheath body, and when tightened, the fixing ring 2 close to the probe 9 can be fixed on the sheath body. While adjusting the position of the fixing ring 2 far from the probe 9, the tooth clip 3 can be adjusted to a suitable position to clamp the teeth to maintain the stability of the probe 9. When the locking screw 1 on the fixing ring 2 far from the probe 9 is loosened, the fixing ring 2 far from the probe 9 can be adjusted to a suitable position on the sheath body, and when tightened, the fixing ring 2 far from the probe 9 can be fixed on the sheath body.

[0049] See Figure 2 As shown, the probe 9 includes: a glass 21, a fill light 22, a pinhole camera 23 and a laser scanning device 24; the fill light 22 is located outside the outer circle of the glass 21; the pinhole camera 23 and the laser scanning device 24 are located inside the covered area of the glass 21. The fill light 22 can illuminate the oral cavity and the collection site, and the pinhole camera 23 can photograph the condition of the diseased part in the oral cavity and transmit it to the computer to more intuitively determine the diseased part; the laser scanning device 24 scans the diseased part to collect images.

[0050] See Figure 3 As shown, an optical transmission lens 31 and a galvanometer scanner GS32 are arranged inside the probe 9, and the optical transmission lens 31 is optically connected to the galvanometer scanner GS32. There are two groups of optical transmission lenses 31, one group is close to the glass 21 of the probe 9, and the other group is close to the focusing screw 8; the galvanometer scanner GS32 is arranged between the two groups of optical transmission lenses 31.

[0051] The convenient button 101 includes: a preview key and a start key. The preview key controls the aperture, laser, and pinhole camera, and the start key controls the OCT image acquisition on the computer side. When pressing the preview key, the aperture 22, the pinhole camera 23, and the laser scanning device 24 can be started to accurately determine the lesion site according to the image presented by the camera. When pressing the start key, the OCT image acquisition is started and ends after a set time.

[0052] Another embodiment of the present invention is: for the situation where no available fixed site can be found in the mouth due to tooth defects, looseness, and loss, etc., the tooth clamp 3 is replaced with the same fixing structure as the long rod 4, the universal swivel head 5, the short rod 6, and the chin rest 7. The extraoral fixed sites where the tooth clamp 3 adopts this structural form include: bilateral mandibular angles, bilateral external auditory canals, vertex-frontal, occipital, and any combination thereof.

[0053] Preferably, the included angle between the handle 10 and the sheath body is 90°, which is convenient for the operator to hold and operate.

[0054] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will all fall within the protection scope of the present invention.

[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A small probe device for oral mucosal OCT image acquisition, characterized in that: include: A front end portion and a handle (10) are arranged in order from near to far from the oral inspection site, and the handle (10) is fixedly connected to the front end portion as a whole; The front end portion comprises: a probe (9) and a sheath body which are arranged in order from near to far distances from the oral examination site, the probe (9) being arranged at the end of the sheath body, and the outer diameter portion of the sheath body being detachably connected to a tooth clamp (3) and a chin rest (7), the chin rest (7) having three degrees of rotational freedom; The handle (10) is provided with a focusing screw (8) and a convenient button (101); the focusing screw (8) is optically connected to the probe (9); and the convenient button (101) is electrically connected to the probe (9).

2. The small probe device for oral mucosa OCT image acquisition according to claim 1, characterized in that: The outer diameter portion of the sheath body is sequentially sleeved with two fixing rings (2) along the direction of distance from the probe (9) from near to far, and the inner diameter of the fixing ring (2) is adjustable; the tooth clamp (3) is fixedly connected to the lower part of the fixing ring (2) which is close to the probe (9), and the lower part of the fixing ring (2) which is far from the probe (9) is fixedly connected to a long rod (4), the end of the long rod (4) is a spherical structure, the spherical structure is rotatably connected to a universal steering head (5), the universal steering head (5) is fixedly connected to a short rod (6), and the chin rest (7) is fixedly connected to the end of the short rod (6).

3. The small probe device for oral mucosa OCT image acquisition according to claim 2, characterized in that: The two fixing rings (2) are respectively provided with a fixing screw (1), and the fixing screw (1) adjusts the tightness between the fixing ring (2) and the sheath body.

4. The small probe device for oral mucosa OCT image acquisition according to claim 1, characterized in that: The probe (9) comprises: glass (21), a fill light (22), a pinhole camera (23) and a laser scanning device (24); the fill light (22) is located outside the outer circle of the glass (21); and the pinhole camera (23) and the laser scanning device (24) are located inside the coverage area of ​​the glass (21).

5. The small probe device for oral mucosa OCT image acquisition according to claim 4, characterized in that: An optical transmission mirror (31) and a galvanometer scanning mirror GS (32) are arranged inside the probe (9), and the optical transmission mirror (31) and the galvanometer scanning mirror GS (32) are optically connected.

6. The small probe device for oral mucosa OCT image acquisition according to claim 4, characterized in that: The convenient button (101) comprises a preview key and a start key, and both the preview key and the start key are electrically connected to the fill light (22), the laser scanning device (24) and the pinhole camera (23).

7. The small probe device for oral mucosa OCT image acquisition according to claim 5, characterized in that: The optical transmission mirrors (31) are divided into two groups, one of which is close to the glass (21) of the probe (9) and the other is close to the focusing screw (8); the galvanometer scanning mirror GS (32) is arranged between the two groups of optical transmission mirrors (31).

8. The small probe device for oral mucosa OCT image acquisition according to claim 2, characterized in that: The tooth clamp (3) is replaced by a fixed structure identical to the long rod (4), the universal steering head (5), the short rod (6) and the chin rest (7).

9. The small probe device for oral mucosa OCT image acquisition according to claim 1, characterized in that: There is a set angle between the handle (10) and the sheath.

10. The small probe device for oral mucosa OCT image acquisition according to claim 1, characterized in that: The tooth clamp (3) and the chin support (7) are both made of medical plastic structures.

Images