Special probe device with pumpback function for respiratory tract OCT (optical coherence tomography) detection equipment

Abstract

The utility model discloses a special probe device with a pumpback function for respiratory tract OCT (optical coherence tomography) detection equipment, which comprises a sliding pumpback component, a middle structure component, a positioning tube, an end cover female head, a first sliding bearing, a second sliding bearing, a sleeve joint and a protective tube, and the sliding pumpback component comprises a catheter rotor joint, an MU optical fiber joint and a sliding tube. A rotor is arranged at the front end of the catheter rotor connector, a sliding inner cavity is formed in the middle structure assembly along the inner side, an extending end is arranged at the front end of the middle structure assembly, a positioning pipe is arranged in the extending end, a second sliding bearing is arranged at the end of the positioning pipe, and a through hole allowing the sliding pipe to penetrate through is formed in the sleeve connector in the length direction. In the OCT imaging process, withdrawing can be achieved in the mode that the driving piece drives the catheter rotor connector to move, then the problem of interval section scanning is solved, meanwhile, the design can be adopted, high-speed scanning can be synchronously achieved, and the scanning frame rate per second is 100 or above.

Description

Technical Field

[0001] This utility model relates to optical interferometric tomography technology, and more particularly to a probe device with a back-pull function for respiratory OCT detection equipment. Background Technology

[0002] Optical Coherence Tomography (OCT) is an optical imaging technique based on the principle of weakly coherent light interference. It obtains two-dimensional or three-dimensional structures of biological tissues by detecting the back reflection or scattering signals of incident weakly coherent light by different tissues. First proposed by a research group at MIT in 1991, it has gained widespread application in the medical field due to its advantages such as fast imaging, high resolution, and non-invasiveness. Currently, research on OCT technology both domestically and internationally mainly focuses on OCT technologies and equipment in ophthalmology, dermatology, and cardiovascular fields. OCT medical devices for open cavities in the human body are gradually emerging and entering the clinical field. Conventional OCT devices are only suitable for imaging within a single tissue location. However, the information displayed by a single cross-section is often limited, making it inconvenient and unfavorable for medical personnel to accurately determine the type and size of lesions. Therefore, it is necessary to incorporate a module that can move the scanning catheter along the axial direction to achieve scanning imaging of open cavities in the human body over a certain axial distance. By performing axial retrograde imaging, key information such as the morphology of tissue structures, the location and size of lesions can be more clearly determined. Because OCT scanning technology can acquire radial depth information of the probed tissue, the three-dimensional structure of the probed tissue can be obtained simultaneously with axial retrograde imaging. OCT imaging technology requires no contrast agents and has no ionization or fluorescence effects, making it safer than traditional imaging techniques and often referred to as "optical biopsy." OCT tomography imaging technology has micrometer-level optical resolution, two orders of magnitude higher than X-ray and MRI technologies. Its high resolution and non-destructive testing advantages have led to the widespread application of OCT tomography imaging technology in fields such as coronary angiography, achieving satisfactory results.

[0003] Patent application CN202211724349.0 discloses an OCT imaging catheter, comprising: an outer tube, an optical fiber, and a spring tube; a guidewire connected to the distal end of the outer tube; the optical fiber passing through the outer tube, wherein the optical fiber includes a connected proximal body segment and a distal body segment; and the spring tube passing through the outer tube and covering the proximal body segment. This application, by covering the proximal body segment of the optical fiber with a spring tube while leaving the distal body segment uncovered, reduces the outer diameter of the portion of the outer tube corresponding to the distal body segment. This significantly reduces the diameter of the distal end of the OCT imaging catheter, improving its passability during intravascular navigation and enabling it to smoothly pass through small and complex intracranial vessels, effectively ensuring its normal use within intracranial blood vessels.

[0004] Patent document with application number "CN202211154088.3" discloses an OCT conduit loading system, including a conduit assembly and a driving device. The conduit assembly includes a first insertion component, a fixing sleeve, and an optical fiber connector. The optical fiber connector is fixedly disposed within the fixing sleeve, and the conduit is inserted into the optical fiber connector. The fixing sleeve has an initial position and a rotational position relative to the first insertion component. The driving device includes a fixing base, a second insertion component, an optical fiber adapter, and a driving component. The second insertion component is disposed within the fixing base, and the optical fiber adapter passes through the fixing base via a fixing member. In this OCT conduit loading system, before the optical fiber connector and optical fiber adapter are inserted, the fixing sleeve is in the initial position relative to the first insertion component. After the optical fiber connector and optical fiber adapter are inserted, the second insertion component drives the first insertion component to move relative to the fixing sleeve to a rotational position, and the driving component drives the optical fiber adapter to rotate, thus enabling manual insertion of the optical fiber connector and optical fiber adapter.

[0005] The aforementioned patent documents, in conjunction with existing technology, reveal the following defects in existing respiratory OCT detection equipment's dedicated probe devices with aspiration function:

[0006] Existing OCT technology lacks a back-pull function, making segment scanning impossible. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, this utility model provides a special probe device with a backflow function for respiratory OCT detection equipment, which solves the problem that the special probe device with a backflow function for respiratory OCT detection equipment does not have a backflow function.

[0008] A probe device with a retraction function for respiratory OCT detection equipment is characterized by comprising a sliding retraction assembly, an intermediate structural assembly, a positioning tube, an end cap female head, a first sliding bearing, a second sliding bearing, a sleeve connector, and a protective tube. The sliding retraction assembly includes a catheter rotor connector, a MU fiber optic connector, and a sliding tube. The MU fiber optic connector is fixed to the inner side of the catheter rotor connector. A rotor is provided at the front end of the catheter rotor connector, and the sliding tube is installed on the central axis of rotation of the rotor. The intermediate structural assembly has a sliding inner cavity along its inner side. A second built-in positioning sleeve that mates with the rotor is provided along the inner end face of the sliding inner cavity. The front end of the intermediate structural assembly has an extension end. The positioning tube is provided inside the extension end. The second sliding bearing is provided at the end of the positioning tube. The extension end is connected to the tail of the end cap female head. The end of the sleeve connector is connected to the end cap female head, and the front end of the sleeve connector is connected to the protective tube. The sleeve connector has a through hole along its length for the sliding tube to pass through.

[0009] In a preferred embodiment of the first aspect of this utility model, a sealing ring is provided on the outer side of the rotor to prevent the optical coupling agent in the cavity from leaking outward, and the stator is provided with a spline structure to accurately and quickly couple with the OCT probe drive device.

[0010] In a preferred embodiment of the first aspect of this utility model, the conduit rotor connector is provided with a first built-in positioning sleeve along its inner side, and the MU fiber optic connector is fixed to the first built-in positioning sleeve.

[0011] In a first aspect of this utility model, as a preferred embodiment, a limiting tube is provided inside the through hole.

[0012] In a preferred embodiment of the first aspect of this utility model, a metal guide wire is provided inside the through hole.

[0013] In a preferred embodiment of the first aspect of this utility model, the catheter rotor connector is provided with a tail step at its end to realize the probe electric unlocking function.

[0014] In a first aspect of this utility model, as a preferred embodiment, the intermediate structural component is provided with a plurality of side fixing ends around the outer side.

[0015] In a preferred embodiment of the present invention, the end cap female head is provided with a sliding cavity along the length direction, and the tail of the sleeve joint is provided with a rear positioning thread structure, which is screwed into the sliding cavity.

[0016] In a first aspect of this utility model, as a preferred embodiment, a double sliding bearing structure with wear resistance and self-lubrication is provided in the sliding cavity, so that the probe can be used for high-speed rotation.

[0017] In a preferred embodiment of the first aspect of this utility model, the end cap female head is in the shape of a conical cylinder.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The MU fiber optic connector is fixed to the inner side of the conduit rotor connector. A rotor is located at the front end of the conduit rotor connector, and the sliding tube is installed in the middle of the rotor. The intermediate structural assembly has a sliding inner cavity along its inner side. A second internal positioning sleeve, which mates with the rotor, is located along the inner end face of the sliding inner cavity. The intermediate structural assembly has an extended end at its front end, and a positioning tube is located inside the extended end. A second sliding bearing is located at the end of the positioning tube. The extended end connects to the tail of the end cap female head. The end of the sleeve connector connects to the end cap female head, and the front end of the sleeve connector connects to the protective tube. The sleeve connector has a through hole along its length for the sliding tube to pass through. During OCT imaging, the conduit rotor connector can be retracted by driving the movement of a driving component, thus solving the problem of segmented scanning. This design also allows for simultaneous high-speed scanning, with a scanning frame rate exceeding 100 frames per second. Attached Figure Description

[0020] Figure 1 This is a diagram of the internal structure of the present invention;

[0021] Figure 2 This is a perspective view of the present utility model;

[0022] Figure 3 This is a cross-sectional view of the present invention.

[0023] In the figure: 100, sliding retraction assembly; 10, conduit rotor connector; 101, tail step; 11, rotor; 111, sealing ring; 12, first built-in positioning sleeve; 20, MU fiber optic connector; 30, sliding tube; 40, intermediate structure assembly; 401, side fixed end; 41, protruding end; 42, second built-in positioning sleeve; 43, sliding inner cavity; 44, positioning tube; 50, outer shell; 60, end cap female head; 61, sliding cavity; 71, first sliding bearing; 72, second sliding bearing; 80, sleeve connector; 801, rear positioning thread structure; 802, through hole; 90, protective tube. Detailed Implementation

[0024] The utility model will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus. A probe device with a retraction function for respiratory OCT detection equipment includes a sliding retraction assembly 100, an intermediate structure assembly 40, a positioning tube 44, an end cap 60, a first sliding bearing 71, a second sliding bearing 72, a sleeve connector 80, and a protective tube 90. The sliding retraction assembly 100 includes a catheter rotor connector 10, a MU fiber optic connector 20, and a sliding tube 30. The MU fiber optic connector 20 is fixed to the inner side of the catheter rotor connector 10. A rotor 11 is provided at the front end of the catheter rotor connector 10, and the sliding tube 30 is installed on the central axis of the rotor 11. The intermediate structure assembly 40 is located along the inner side... A sliding inner cavity 43 is provided, and a second built-in positioning sleeve 42 that mates with the rotor 11 is provided along the inner end face of the sliding inner cavity 43. The front end of the intermediate structural component 40 is provided with an extension end 41, and a positioning tube 44 is provided inside the extension end 41. A second sliding bearing 72 is provided at the end of the positioning tube 44. The extension end 41 is connected to the tail of the end cap female head 60. The end of the sleeve joint 80 is connected to the end cap female head 60, and the front end of the sleeve joint 80 is connected to the protective tube 90. The sleeve joint 80 has a through hole 802 along its length for the sliding tube 30 to pass through. During OCT imaging, the duct rotor joint 10 can be retracted by driving the drive component to move, thereby solving the problem of segmented scanning. At the same time, this design can achieve high-speed scanning simultaneously, with a scanning frame rate of more than 100 frames per second.

[0028] Specifically, in a preferred embodiment, the distance between the intervals is 0cm-80cm. Specifically, the respiratory OCT detection device with a dedicated probe featuring a suction function further includes an outer housing 50, which is used for decoration and fixation to the protruding end 41.

[0029] In a preferred embodiment of the first aspect of this utility model, a sealing ring 111 is provided on the outer side of the rotor 11. The plasticity of the rubber material of the sealing ring 111 is utilized to prevent collision with the rotor when the rotor is reset.

[0030] In the first aspect of this utility model, the protrusion 11 of the conduit rotor connector 10 is provided with a first built-in positioning sleeve 12, and the MU fiber optic connector 20 is fixed inside the first built-in positioning sleeve 12, thereby solving the problem of connector fixation.

[0031] In a preferred embodiment of the first aspect of this utility model, the conduit rotor connector 10 is provided with a tail step 101 at its end. The conduit rotor connector 10 is connected to a driving member, which drives the conduit rotor connector 10 to rotate, facilitating fixation.

[0032] In a preferred embodiment of the first aspect of this invention, the intermediate structural component 40 is provided with a plurality of side fixing ends 401 around its outer side for easy fixing to other components. Specifically, the stator adopts a spline-like structure design, which allows for accurate and rapid coupling connection with the OCT probe driving device.

[0033] In a preferred embodiment of the first aspect of this utility model, the end cap 60 is provided with a sliding cavity 61 along its length, and the tail of the sleeve connector 80 is provided with a rear positioning thread structure 801, which is threaded into the threaded hole of the end cap nut. A first sliding bearing 71 is embedded inside the end cap nut, and the sliding tube 30 passes through the first sliding bearing 71.

[0034] In a preferred embodiment of the first aspect of this utility model, a limiting tube is provided within the through hole 802, and a metal guide wire is provided within the through hole 802. The limiting tube is used to limit the extreme movement position of the sliding tube 30, preventing the probe from failing to reset and malfunctioning due to the sliding tube being pulled out.

[0035] like Figure 1-3 As shown,

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A probe device with a suction function specifically for respiratory OCT detection equipment, characterized in that, It includes a sliding retraction assembly, an intermediate structure assembly, a positioning tube, an end cap female head, a first sliding bearing, a second sliding bearing, a sleeve joint, and a protective tube. The sliding retraction assembly includes a conduit rotor joint, a MU fiber optic joint, and a sliding tube. The MU fiber optic joint is fixed to the inner side of the conduit rotor joint. A rotor is provided at the front end of the conduit rotor joint. The sliding tube is installed on the central axis of rotation of the rotor. The intermediate structural component has a sliding inner cavity along its inner side, and a second built-in positioning sleeve that is inserted into the rotor is provided along the inner end face of the sliding inner cavity. The intermediate structural component has a protruding end at its front end, and a positioning tube is provided inside the protruding end. A second sliding bearing is provided at the end of the positioning tube, and the protruding end is connected to the tail of the end cap female head. The end of the sleeve connector is connected to the end cap female head, the front end of the sleeve connector is connected to the protective tube, and the sleeve connector is provided with a through hole along its length for the sliding tube to pass through.

2. The respiratory OCT detection device with a suction function probe as described in claim 1, characterized in that: The rotor is equipped with a sealing ring on the outside to prevent the optical coupling agent in the cavity from leaking out. The stator is equipped with a spline structure to accurately and quickly couple with the OCT probe drive device.

3. The respiratory OCT detection device with a suction function probe as described in claim 2, characterized in that: The conduit rotor connector is provided with a first built-in positioning sleeve along its inner side, and the MU fiber optic connector is fixed to the first built-in positioning sleeve.

4. The respiratory OCT detection device with a suction function probe as described in claim 2, characterized in that: A limiting tube is installed inside the through hole.

5. The respiratory OCT detection device with a suction function probe as described in claim 1, characterized in that: A metal guide wire is installed inside the through hole.

6. The respiratory OCT detection device with a suction function probe as described in claim 1, characterized in that: The catheter rotor connector has a tail step at the end to enable the probe to be electrically unlocked.

7. The respiratory OCT detection device with a suction function probe as described in claim 1, characterized in that: The intermediate structural component has multiple side fixing ends arranged around its outer side.

8. The respiratory OCT detection device with a suction function probe as described in claim 1, characterized in that: The end cap female head is provided with a sliding cavity along its length, and the tail of the sleeve joint is provided with a rear positioning thread structure, which is screwed into the sliding cavity.

9. The respiratory OCT detection device with a suction function probe as described in claim 8, characterized in that: The sliding cavity is equipped with a double sliding bearing structure that is wear-resistant and self-lubricating, enabling the probe to rotate at high speed.

10. The respiratory OCT detection device with a suction function probe as described in claim 9, characterized in that: The end cap female head is conical in shape.

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