Blood vessel imaging device based on OCT-IVUS dual-mode probe

Abstract

The invention relates to the technical field of angiography, and provides an angiography device based on an OCT-IVUS dual-mode probe, the angiography device comprises an integrated probe, a rotary driving assembly and a linear driving assembly, the rotary driving assembly is connected to the output end of the linear driving assembly, the integrated probe is connected to the output end of the rotary driving assembly, and the integrated probe is connected to the output end of the linear driving assembly. According to the integrated probe, a shell is connected to the output end of a rotary driving assembly; the first optical fiber is arranged in the shell in a penetrating manner; the prism is positioned in the shell and is connected to the end part of the first optical fiber; the photoacoustic transducer is arranged in the shell; the second optical fiber is arranged in the shell in a penetrating manner; the pi-FBG sensor is positioned in the shell and is connected to the end part of the second optical fiber; the transmitting mirror is arranged on the side wall of the shell, the first side face of the transmitting mirror faces the prism, and the second side face of the transmitting mirror faces the outside of the shell. By means of the technical scheme, the problems that in the combination process of the OCT technology and the IVUS technology, the structure is complex, and maintenance is tedious are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vascular imaging, and specifically, to a vascular imaging device based on an OCT-IVUS dual-mode probe. Background Art

[0002] In the field of diagnosis and treatment of cardiovascular diseases, intravascular ultrasound imaging and optical coherence tomography technology have attracted attention because they can provide microscopic structure images inside blood vessels. Intravascular ultrasound imaging technology emits and receives ultrasonic signals through an ultrasonic transducer to achieve cross-sectional imaging of the blood vessel wall. Although the IVUS technology can provide images of each membrane layer structure of the blood vessel wall, it has limitations in accurately judging soft tissue components. In addition, the IVUS probe based on a piezoelectric ultrasonic transducer has problems such as low ultrasonic detection sensitivity, large influence of electromagnetic interference, difficult impedance matching, and large signal attenuation. Optical coherence tomography technology is known for its high resolution and can clearly display the fine structure of the inner wall of blood vessels. However, due to the limited imaging depth of OCT, usually only about 1 millimeter, this limits the evaluation of the overall structure of plaques. In addition, the OCT technology also faces the problem of low penetration depth caused by light scattering in intravascular imaging. Therefore, it is necessary to combine the OCT technology and the IVUS technology, and the combination of the two will overcome the above problems to a certain extent. However, in the process of combining the OCT technology and the IVUS technology, there are still problems of complex structure and cumbersome maintenance.

[0003] Therefore, there is an urgent need for a new vascular imaging device. Summary of the Invention

[0004] The present invention provides a vascular imaging device based on an OCT-IVUS dual-mode probe, which solves the problems of complex structure and cumbersome maintenance in the process of combining the OCT technology and the IVUS technology.

[0005] The technical solution of the present invention is as follows: A vascular imaging device based on an OCT-IVUS dual-mode probe includes an integrated probe, a rotary drive assembly, and a linear drive assembly. The rotary drive assembly is connected to the output end of the linear drive assembly, and the integrated probe is connected to the output end of the rotary drive assembly. The integrated probe includes:

[0006] A housing connected to the output end of the rotary drive assembly;

[0007] A first optical fiber, a part of which is disposed inside the housing;

[0008] A prism located inside the housing and connected to the end of the first optical fiber;

[0009] An optoacoustic transducer disposed inside the housing and used to convert an optical signal into an ultrasonic signal;

[0010] A second optical fiber, a part of which is disposed inside the housing;

[0011] A π-FBG sensor, which is located inside the housing and connected to the end of the second optical fiber, and the π-FBG sensor is used to receive ultrasonic signals reflected from blood vessels;

[0012] A transmission lens, which is disposed on the side wall of the housing, a first side of the transmission lens faces the prism, and a second side of the transmission lens faces the outside of the housing.

[0013] As a further technical solution, the integrated probe further includes an acoustic lens, and the acoustic lens is disposed inside the housing and on the side of the photoacoustic transducer.

[0014] As a further technical solution, an optical adhesive is provided between the prism and the end of the first optical fiber.

[0015] As a further technical solution, the first optical fiber and the second optical fiber are arranged side by side and parallel to each other.

[0016] As a further technical solution, the integrated probe further includes an optical fiber fixing plate, and the optical fiber fixing plate is disposed inside the housing, and both the first optical fiber and the second optical fiber pass through the optical fiber fixing plate.

[0017] As a further technical solution, the integrated probe further includes an ultrasonic partition plate, and the ultrasonic partition plate is located inside the housing, and both the first optical fiber and the optical fiber pass through the ultrasonic partition plate.

[0018] As a further technical solution, the rotation driving assembly includes:

[0019] A rotation driving member, which is disposed on the output end of the linear driving assembly;

[0020] A slip ring bracket, which is disposed on the output end of the linear driving assembly;

[0021] An electric slip ring, which is rotatably connected to the slip ring bracket, one end of the electric slip ring is connected to the output end of the rotation driving member, and the other end is connected to the housing.

[0022] As a further technical solution, the rotation driving assembly further includes:

[0023] A rotation bracket, which is disposed on the output end of the linear driving assembly and located between the rotation driving member and the slip ring bracket;

[0024] A rotation shaft, which is rotatably disposed on the rotation bracket, one end of the rotation shaft is connected to the output end of the rotation driving member, and the other end is connected to the electric slip ring.

[0025] As a further technical solution, the linear drive assembly includes:

[0026] A linear base;

[0027] A linear drive member disposed on the linear base;

[0028] A linear slide plate slidably disposed on the linear base, the rotary drive assembly being disposed on the slide plate, and the linear slide plate being connected to the output end of the linear drive member.

[0029] As a further technical solution, the linear drive assembly further includes:

[0030] A guide rail disposed on the linear base;

[0031] A slider disposed at the bottom of the linear slide plate and slidably disposed on the guide rail, the sliding direction of the slider being consistent with the sliding direction of the linear slide plate.

[0032] The working principle and beneficial effects of the present invention are as follows: The vascular imaging device based on the OCT-IVUS dual-mode probe includes an integrated probe, a rotary drive assembly, and a linear drive assembly. Among them, the rotary drive assembly is disposed at the output end of the linear drive assembly, and the integrated probe is disposed at the output end of the rotary drive assembly. The integrated probe realizes reciprocating movement on a straight line and rotational movement in a vertical plane by means of the rotary drive assembly and the linear drive assembly, and the axis of rotation is perpendicular to the vertical plane. The integrated probe includes a housing, a first optical fiber, a prism, a photoacoustic transducer, a second optical fiber, a π-FBG sensor, and a transmissive mirror. The housing is disposed at the output end of the rotary drive assembly, and there is a space inside the housing. Both the first optical fiber and the second optical fiber are threaded through the housing. The prism is located inside the housing and connected to the end of the first optical fiber. The photoacoustic transducer is disposed on the inner wall of the housing. The photoacoustic transducer is used to convert pulsed laser into ultrasonic waves. The π-FBG sensor is used to sense the ultrasonic waves reflected from the blood vessel and convert the ultrasonic wave signal into an optical signal. The second optical fiber receives the optical signal generated by the π-FBG sensor and feeds it back to an external display screen. The transmissive mirror is disposed on the side wall of the housing, and the first side of the transmissive mirror faces the prism, and the second side faces the outside of the housing. That is, the structure and components inside the housing can be seen from the outside of the housing through the transmissive mirror.

[0033] During operation, first, the position of the probe is adjusted by the linear drive assembly and the rotary drive assembly. Then, through an external controller and a pulsed laser emitter, pulsed laser is transmitted to the first optical fiber. After passing through the prism, the pulsed laser will refract and transmit. The refracted pulsed laser will be transmitted to the photoacoustic transducer, and then converted into ultrasonic waves. The ultrasonic waves are emitted into the blood vessel and will be reflected back after encountering an obstacle. The reflected ultrasonic waves will be received by the π-FBG sensor, and the ultrasonic signal will be converted into an optical signal and transmitted along the second optical fiber to the controller, and then the internal situation of the blood vessel will be displayed on the screen. The transmitted pulsed laser will be emitted outside the housing through the transmission mirror, and then into the blood vessel to detect the internal situation of the blood vessel. The pulsed laser will be reflected by the tissue in the blood vessel and enter the first optical fiber, and then be acquired by the controller and finally displayed on the screen. Since a combination of two technologies, ultrasonic imaging and optical coherence tomography, is adopted, not only can the cross-section of the blood vessel be imaged, but also the fine structures of the soft tissue and the inner wall of the blood vessel can be clearly displayed, and the imaging depth becomes larger, which is beneficial to the evaluation of the overall structure of the plaque. Description of the Drawings

[0034] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0035] Figure 1 Structural schematic diagram of the overall device provided by the present invention;

[0036] Figure 2 is Figure 1 Structural schematic diagram at the first angle;

[0037] Figure 3 is Figure 1 Structural schematic diagram at the second angle;

[0038] Figure 4 Partial structural schematic diagram of the integrated probe provided by the present invention;

[0039] Figure 5 Internal sectional view of the integrated probe provided by the present invention.

[0040] In the figure:

[0041] 1. Integrated probe; 2. Rotary drive assembly; 3. Linear drive assembly;

[0042] 101. Housing; 102. First optical fiber; 103. Prism; 104. Photoacoustic transducer; 105. Second optical fiber; 106. π-FBG sensor; 107. Transmission mirror; 108. Acoustic lens; 109. Optical fiber fixing plate; 110. Ultrasonic baffle; 111. Visible transparent window;

[0043] 201. Rotating drive member; 202. Slip ring bracket; 203. Electrical slip ring; 204. Rotating bracket; 205. Rotating shaft;

[0044] 301. Linear base; 302. Linear drive member; 303. Linear slide plate; 304. Guide rail; 305. Slide block. Specific implementation manner

[0045] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0046] As Figures 1 to 5 shown, this embodiment proposes a vascular imaging device based on an OCT-IVUS dual-mode probe, including an integrated probe 1, a rotating drive assembly 2, and a linear drive assembly 3. The rotating drive assembly 2 is connected to the output end of the linear drive assembly 3, and the integrated probe 1 is connected to the output end of the rotating drive assembly 2. The integrated probe 1 includes:

[0047] A housing 101, connected to the output end of the rotating drive assembly 2;

[0048] A first optical fiber 102, with a part passing through the inside of the housing 101;

[0049] A prism 103, located inside the housing 101 and connected to the end of the first optical fiber 102;

[0050] A photoacoustic transducer 104, arranged inside the housing 101 and used to convert an optical signal into an ultrasonic signal;

[0051] A second optical fiber 105, with a part passing through the inside of the housing 101;

[0052] A π-FBG sensor 106, located inside the housing 101 and connected to the end of the second optical fiber 105. The π-FBG sensor 106 is used to receive the ultrasonic signal reflected from the blood vessel;

[0053] A transmissive mirror 107, arranged on the side wall of the housing 101. The first side of the transmissive mirror 107 faces the prism 103, and the second side of the transmissive mirror 107 faces the outside of the housing 101.

[0054] In this embodiment, the vascular imaging device based on the OCT-IVUS dual-mode probe includes an integrated probe 1, a rotation drive assembly 2, and a linear drive assembly 3. Among them, the rotation drive assembly 2 is arranged at the output end of the linear drive assembly 3, and the integrated probe 1 is arranged at the output end of the rotation drive assembly 2. The integrated probe 1 realizes reciprocating movement on a straight line and rotational movement in a vertical plane with the help of the rotation drive assembly 2 and the linear drive assembly 3, and the axis of rotation is perpendicular to the vertical plane. The integrated probe 1 includes a housing 101, a first optical fiber 102, a prism 103, a photoacoustic transducer 104, a second optical fiber 105, a π-FBG sensor 106, and a transmissive mirror 107. The housing 101 is arranged at the output end of the rotation drive assembly 2. There is a space inside the housing 101. Both the first optical fiber 102 and the second optical fiber 105 are arranged inside the housing 101. The prism 103 is located inside the housing 101 and is connected to the end of the first optical fiber 102. The photoacoustic transducer 104 is arranged on the inner wall of the housing 101. The photoacoustic transducer 104 is used to convert pulsed laser into ultrasonic waves. The π-FBG sensor 106 is used to sense the ultrasonic waves reflected from the blood vessel and convert the ultrasonic wave signal into an optical signal. The second optical fiber 105 receives the optical signal generated by the π-FBG sensor 106 and feeds it back to an external display screen. The transmissive mirror 107 is arranged on the side wall of the housing 101, and the first side of the transmissive mirror 107 faces the prism 103, and the second side faces the outside of the housing 101. That is, the structure and components inside the housing 101 can be seen from the outside of the housing 101 through the transmissive mirror 107.

[0055] During operation, first, the position of the probe is adjusted by the linear drive assembly 3 and the rotary drive assembly 2. Then, a pulsed laser is transmitted to the first optical fiber 102 through an external controller and a pulsed laser emitter. After passing through the prism 103, the pulsed laser will refract and transmit. The refracted pulsed laser will be transmitted to the photoacoustic transducer 104, and then converted into ultrasonic waves. The ultrasonic waves will spread into the blood vessel and be reflected back after encountering an obstacle. The reflected ultrasonic waves will be received by the π-FBG sensor 106, and the ultrasonic signal will be converted into an optical signal and transmitted along the second optical fiber 105 to the controller, and then the internal situation of the blood vessel will be displayed on the screen. The transmitted pulsed laser will be emitted outside the housing 101 through the transmission lens 107, and then enter the inside of the blood vessel and be used to detect the internal situation of the blood vessel. The pulsed laser will be reflected by the tissue in the blood vessel and enter the first optical fiber 102, and then be acquired by the controller and finally displayed on the screen. Due to the combination of two technologies, ultrasonic imaging and optical coherence tomography, not only can the cross-section of the blood vessel be imaged, but also the fine structures of the soft tissue and the inner wall of the blood vessel can be clearly displayed, and the imaging depth becomes larger, which is beneficial to the evaluation of the overall structure of the plaque. During the operation of the probe, the IVUS and OCT imaging technologies are integrated into the same probe, reducing the volume and complexity of the device and improving the imaging efficiency. Synchronous acquisition of IVUS and OCT is achieved, avoiding time delay and difficulty in comparative analysis caused by sequential imaging. By using advanced technologies such as pulsed lasers and π-FBG sensors 106, the imaging accuracy and resolution are improved, providing more accurate information for the diagnosis of blood vessel diseases.

[0056] In a practical application, in order to prevent blood from entering the integrated probe, a visible transparent window 111 is provided on the housing 101. The visible transparent window 111 is used for the penetration of ultrasonic waves and can also observe the inside of the probe from the outside.

[0057] Furthermore, as Figures 1 to 5 shown, this embodiment proposes that the integrated probe 1 further includes an acoustic lens 108. The acoustic lens 108 is arranged inside the housing 101 and is located on the side of the photoacoustic transducer 104.

[0058] In this embodiment, in order to enable the π-FBG sensor 106 to obtain more accurate ultrasonic signals, an acoustic lens 108 is arranged inside the housing 101. The acoustic lens 108 can focus ultrasonic waves, so that the reflected ultrasonic waves can be focused and then transmitted to the π-FBG sensor 106, improving the detection accuracy of the π-FBG sensor 106.

[0059] Furthermore, as Figures 1 to 5 shown, this embodiment proposes that an optical glue is provided at the end of the prism 103 and the first optical fiber 102.

[0060] In this embodiment, in order to facilitate the fixation of the prism 103 to the first optical fiber 102, an optical adhesive layer is provided at the end of the first optical fiber 102, and then the prism 103 is adhered to the optical adhesive, so as to achieve the stable fixation of the prism 103 on the first optical fiber 102.

[0061] Further, as Figures 1 to 5 shown, in this embodiment, the first optical fiber 102 and the second optical fiber 105 are arranged side by side and in parallel.

[0062] In this embodiment, the first optical fiber 102 and the second optical fiber 105 are arranged side by side and in parallel, which is beneficial to the fixation and installation of the first optical fiber 102 and the second optical fiber 105, and can also ensure the reception of the backhaul signal and avoid the interference between the signals in the first optical fiber 102 and the second optical fiber 105.

[0063] Further, as Figures 1 to 5 shown, in this embodiment, the integrated probe 1 further includes an optical fiber fixing plate 109, the optical fiber fixing plate 109 is arranged inside the housing 101, and both the first optical fiber 102 and the second optical fiber 105 pass through the optical fiber fixing plate 109.

[0064] In this embodiment, in order to avoid the movement of the first optical fiber 102 and the second optical fiber 105 during the working state, an optical fiber fixing plate 109 is arranged inside the housing 101, two mounting holes are opened on the optical fiber fixing plate 109, and then the first optical fiber 102 and the second optical fiber 105 respectively pass through the two mounting holes.

[0065] Further, as Figures 1 to 5 shown, in this embodiment, the integrated probe 1 further includes an ultrasonic barrier plate 110, the ultrasonic barrier plate 110 is located inside the housing 101, and both the first optical fiber 102 and the optical fiber pass through the ultrasonic barrier plate 110.

[0066] In this embodiment, in order to prevent the ultrasonic wave from being conducted out along the first optical fiber 102 or the second optical fiber 105, an ultrasonic barrier plate 110 is arranged inside the housing 101, the ultrasonic barrier plate 110 is located in front of the optical fiber fixing plate 109. When the ultrasonic wave is reflected from the blood vessel and enters the housing 101, the ultrasonic wave will be blocked by the ultrasonic barrier plate 110, avoiding the continuous movement of the ultrasonic wave along the first optical fiber 102 and the second optical fiber 105. In this way, on the one hand, it can avoid the interference of the ultrasonic wave on the detection result, and on the other hand, it can also increase the amount of ultrasonic wave received by the photoacoustic transducer 104.

[0067] Further, as Figures 1 to 3 shown, in this embodiment, the rotary drive assembly 2 includes:

[0068] a rotary drive member 201, arranged on the output end of the linear drive assembly 3;

[0069] A slip ring bracket 202 is arranged on the output end of the linear drive assembly 3;

[0070] An electric slip ring 203 is rotatably connected to the slip ring bracket 202. One end of the electric slip ring 203 is connected to the output end of the rotary drive member 201, and the other end is connected to the housing 101.

[0071] In this embodiment, the rotary drive assembly 2 includes a rotary drive member 201, a slip ring bracket 202, and an electric slip ring 203. Among them, both the rotary drive member 201 and the slip ring bracket 202 are arranged on the output end of the linear drive assembly 3. One end of the electric slip ring 203 is connected to the output end of the rotary drive member 201, and the other end is connected to the housing 101. The electric slip ring 203 is rotatably connected to the slip ring bracket 202.

[0072] Further, as Figures 1 to 3 shown, this embodiment proposes that the rotary drive assembly 2 further includes:

[0073] A rotary bracket 204 is arranged on the output end of the linear drive assembly 3 and is located between the rotary drive member 201 and the slip ring bracket 202;

[0074] A rotary shaft 205 is rotatably arranged on the rotary bracket 204. One end of the rotary shaft 205 is connected to the output end of the rotary drive member 201, and the other end is connected to the electric slip ring 203.

[0075] In this embodiment, in order to improve the stability of the integrated probe 1 during rotation, the rotary drive assembly 2 further includes a rotary bracket 204 and a rotary shaft 205. The rotary bracket 204 is arranged on the output end of the linear drive assembly 3, and the rotary bracket 204 is located between the slip ring bracket 202 and the rotary drive member 201. The rotary shaft 205 is rotatably arranged on the rotary bracket 204. One end of the rotary shaft 205 is connected to the rotary drive member 201, and the other end is connected to the electric slip ring 203. It is equivalent that the electric slip ring 203 is connected to the rotary drive member 201 by means of the rotary shaft 205.

[0076] In an actual application, the rotary drive member 201 is usually selected as a motor, and a bearing is arranged between the rotary shaft 205 and the rotary bracket 204.

[0077] Further, as Figures 1 to 3 shown, this embodiment proposes that the linear drive assembly 3 includes:

[0078] A linear base 301;

[0079] A linear drive member 302 is arranged on the linear base 301;

[0080] The linear skateboard 303 is slidably arranged on the linear base 301. The rotary drive assembly 2 is arranged on the linear skateboard 303, and the linear skateboard 303 is connected to the output end of the linear drive member 302.

[0081] In this embodiment, the linear drive assembly 3 includes a linear base 301, a linear drive member 302 and a linear skateboard 303. The linear drive member 302 is arranged on the linear base 301. The linear skateboard 303 is slidably arranged on the linear base 301. The output end of the linear drive member 302 is connected to the linear skateboard 303. The linear drive member 302 provides the power for the linear reciprocating movement of the linear skateboard 303. The rotary drive assembly 2 is arranged on the linear skateboard 303. The integrated probe 1 and the rotary drive assembly 2 realize the linear reciprocating movement in the horizontal direction by means of the linear skateboard 303.

[0082] Further, as Figures 1 to 3 shown, this embodiment proposes that the linear drive assembly 3 further includes:

[0083] A guide rail 304, arranged on the linear base 301;

[0084] A slider 305, arranged at the bottom of the linear skateboard 303 and slidably arranged on the guide rail 304. The sliding direction of the slider 305 is consistent with the sliding direction of the linear skateboard 303.

[0085] In this embodiment, in order to ensure the stability of the integrated probe 1 and the rotary drive assembly 2 during the movement, the linear drive assembly 3 further includes a guide rail 304 and a slider 305. The guide rail 304 is arranged on the linear base 301. The slider 305 is slidably arranged on the guide rail 304. The skateboard is arranged on the bottom surface of the linear skateboard 303. In this way, the movement of the linear skateboard 303 is relatively stable.

[0086] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intravascular imaging device based on an OCT-IVUS dual-mode probe, characterized in that, It includes an integrated probe (1), a rotary drive assembly (2), and a linear drive assembly (3). The rotary drive assembly (2) is connected to the output end of the linear drive assembly (3), and the integrated probe (1) is connected to the output end of the rotary drive assembly (2). The integrated probe (1) includes: A housing (101) connected to the output end of the rotary drive assembly (2); A first optical fiber (102) with a part passing through the inside of the housing (101); A prism (103) located inside the housing (101) and connected to the end of the first optical fiber (102); An optoacoustic transducer (104) arranged inside the housing (101) and used to convert an optical signal into an ultrasonic signal; A second optical fiber (105) with a part passing through the inside of the housing (101); A π-FBG sensor (106) located inside the housing (101) and connected to the end of the second optical fiber (105). The π-FBG sensor (106) is used to receive the ultrasonic signal reflected from a blood vessel; A transmissive mirror (107) arranged on the side wall of the housing (101). The first side of the transmissive mirror (107) faces the prism (103), and the second side of the transmissive mirror (107) faces the outside of the housing (101).

2. The vascular imaging device based on the OCT-IVUS dual-mode probe according to claim 1, wherein The integrated probe (1) further includes an acoustic lens (108) arranged inside the housing (101) and located on the side of the optoacoustic transducer (104).

3. The vascular imaging device based on an OCT-IVUS dual-mode probe according to claim 1, wherein An optical adhesive is provided at the end of the prism (103) and the first optical fiber (102).

4. The vascular imaging device based on an OCT-IVUS dual-mode probe according to claim 1, characterized in that, The first optical fiber (102) and the second optical fiber (105) are arranged side by side and in parallel.

5. The vascular imaging device based on an OCT-IVUS dual-mode probe according to claim 1, wherein The integrated probe (1) further includes an optical fiber fixing plate (109) arranged inside the housing (101). Both the first optical fiber (102) and the second optical fiber (105) pass through the optical fiber fixing plate (109).

6. The vascular imaging device based on an OCT-IVUS dual-mode probe according to claim 1, wherein, The integrated probe (1) further includes an ultrasonic partition plate (110) located inside the housing (101). Both the first optical fiber (102) and the optical fiber pass through the ultrasonic partition plate (110).

7. The vascular imaging device based on an OCT-IVUS dual-mode probe according to any one of claims 1-6, characterized in that, The rotary drive assembly (2) includes: A rotary drive member (201) arranged on the output end of the linear drive assembly (3); A slip ring bracket (202) arranged on the output end of the linear drive assembly (3); An electrical slip ring (203) rotatably connected to the slip ring bracket (202). One end of the electrical slip ring (203) is connected to the output end of the rotary drive member (201), and the other end is connected to the housing (101).

8. The vascular imaging device based on an OCT-IVUS dual-mode probe according to claim 7, wherein The rotary drive assembly (2) further includes: A rotary bracket (204) arranged on the output end of the linear drive assembly (3) and located between the rotary drive member (201) and the slip ring bracket (202); The rotating shaft (205) is rotatably arranged on the rotating bracket (204). One end of the rotating shaft (205) is connected to the output end of the rotation driving member (201), and the other end is connected to the electric slip ring (203).

9. The vascular imaging device based on the OCT-IVUS dual-mode probe according to any one of claims 1-6, characterized in that, The linear driving assembly (3) includes: A linear base (301); A linear driving member (302) arranged on the linear base (301); A linear sliding plate (303) slidably arranged on the linear base (301). The rotation driving assembly (2) is arranged on the linear sliding plate (303), and the linear sliding plate (303) is connected to the output end of the linear driving member (302).

10. The vascular imaging device based on the OCT-IVUS dual-mode probe according to claim 9, characterized in that, The linear driving assembly (3) further includes: A guide rail (304) arranged on the linear base (301); A slider (305) arranged at the bottom of the linear sliding plate (303) and slidably arranged on the guide rail (304). The sliding direction of the slider (305) is consistent with the sliding direction of the linear sliding plate (303).

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