Dual-mode slip ring applied to OCT-IVUS imaging system and imaging system thereof

Abstract

The application provides a dual-mode slip ring applied to an OCT-IVUS imaging system and an imaging system thereof, wherein the dual-mode slip ring comprises: a fiber slip ring assembly; an electric slip ring assembly comprising an electric slip ring stator and an electric slip ring rotor; wherein the electric slip ring rotor is sleeved and fixed outside the fiber slip ring assembly, the electric slip ring stator is sleeved outside the electric slip ring rotor; and the fiber slip ring assembly and the electric slip ring assembly are coaxially arranged. Through the dual-mode slip ring provided by the application, the 3D scanning mode of two signals of OCT and IVUS can be integrated in a small volume and a simple structure, synchronous operation is realized, and the imaging system thereof can realize IVUS imaging and OCT imaging simultaneously, so that the advantages of IVUS and OCT are complementary, only one interventional operation is needed to obtain images with deep penetration and high resolution at the same time, and therefore the danger of operation is greatly reduced and the accuracy of analysis is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical endoscopic detection, and in particular to a dual-mode slip ring applied to an OCT-IVUS imaging system and an imaging system thereof. BACKGROUND

[0002] Intravascular photoacoustic endoscope (IPE) is a minimally invasive intravascular medical imaging technology. Laser is introduced into the blood vessel through an optical fiber to irradiate the inner surface of the blood vessel, and the diseased tissue specifically absorbs the laser and generates a photoacoustic signal, which is then received by an endoscopic photoacoustic detector. By controlling the 360-degree scanning and axial scanning of the laser beam in the blood vessel lumen, intravascular photoacoustic endoscopic imaging can be obtained. Common intravascular imaging technologies include intravenous ultrasound (IVUS) and optical coherence tomography (OCT). OCT imaging has high resolution and can image the structure of the blood vessel surface and below, presenting the microscopic structure of the blood vessel wall, but its application is easily disturbed by blood flow and requires contrast agent flushing; IVUS imaging can display deep structures and is not affected by blood flow, but the image resolution of fine structures is limited. It can be seen that intravascular photoacoustic endoscopic imaging makes OCT and IVUS complementary to each other, and the development of ultrasonic and optical combined imaging technology has become a new development direction.

[0003] Patent CN213155792U proposes an IVUS imaging and OCT imaging technology fusion-based optical ultrasonic double-catheter structure endoscopic imaging system, in which the ultrasonic module and the optical scanning module are independent of each other, cannot realize synchronous imaging control, and has the problems of complex structure and large volume. SUMMARY

[0004] To solve the problems in the prior art, the present application provides a dual-mode slip ring applied to an OCT-IVUS imaging system and an OCT-IVUS imaging system applying the dual-mode slip ring. The technical scheme of the present application integrates the 3D scanning modes of OCT and IVUS signals with one mechanism to realize synchronous control. The technical scheme of the present application is as follows:

[0005] 1. A dual-mode slip ring applied to an OCT-IVUS imaging system, comprising:

[0006] an optical fiber slip ring assembly;

[0007] an electrical slip ring assembly comprising an electrical slip ring stator and an electrical slip ring rotor;

[0008] The electric slip ring rotor is sleeved and fixed to the outside of the fiber optic slip ring assembly, and the electric slip ring stator is sleeved on the outside of the electric slip ring rotor.

[0009] The fiber optic slip ring assembly and the electric slip ring assembly are coaxially arranged.

[0010] 2. The dual-mode slip ring as described in item 1, wherein the fiber optic slip ring assembly includes a fiber optic slip ring stator, a fiber optic slip ring rotor sleeved on the outside of the fiber optic slip ring stator, a stator collimator disposed on the fiber optic slip ring stator, and a rotor collimator disposed on the fiber optic slip ring rotor.

[0011] 3. The dual-mode slip ring as described in item 2, wherein the fiber optic slip ring assembly further includes two or more first bearings, the first bearings being sleeved on the outside of the fiber optic slip ring stator to form a rolling connection between the fiber optic slip ring stator and the fiber optic slip ring rotor.

[0012] 4. The dual-mode slip ring as described in item 2,

[0013] The fiber optic slip ring rotor includes a rotor end cap sleeved on the outside of the fiber optic slip ring stator, an inner bushing sleeved on the outside of the rotor end cap, and a rotor outer shell sleeved on the outside of the inner bushing.

[0014] Preferably, the rotor collimator is disposed on the shaft of the inner bushing;

[0015] More preferably, the fiber optic slip ring rotor further includes a synchronous gear sleeved and fixed on the rotor housing.

[0016] 5. The dual-mode slip ring as described in item 2, wherein the fiber optic slip ring stator includes a stator spindle and a fiber optic fixing post disposed on one side of the proximal end of the stator spindle; the stator collimator is disposed at the axis of the stator spindle.

[0017] 6. The dual-mode slip ring as described in item 1,

[0018] The electric slip ring rotor includes a rotor body and a rotor coil disposed on the outside of the rotor body;

[0019] The electric slip ring stator includes a stator body and a stator coil disposed inside the stator body.

[0020] 7. The dual-mode slip ring as described in item 1, wherein the electric slip ring assembly further includes two or more second bearings; the second bearings are sleeved on the outside of the fiber optic slip ring assembly to form a rolling connection between the fiber optic slip ring assembly and the electric slip ring stator.

[0021] 8. The dual-mode slip ring as described in item 6,

[0022] The electric slip ring rotor also includes a first rotor fixing member, which prevents the rotor body from rotating relative to the fiber optic slip ring assembly.

[0023] 9. The dual-mode slip ring as described in item 8,

[0024] The first rotor fixing member is annular and is fitted onto the outside of the fiber optic slip ring assembly;

[0025] The first rotor fixing member is provided at least on one side of the rotor body;

[0026] The first rotor fixing member and the rotor body are respectively provided with mutually cooperating protrusions and grooves between the first rotor fixing member and the rotor fiber slip ring assembly.

[0027] 10. The dual-mode slip ring as described in item 1, wherein the dual-mode slip ring further includes a second rotor fixing member, the second rotor fixing member preventing the electric slip ring rotor from moving axially along the fiber optic slip ring assembly.

[0028] 11. The dual-mode slip ring as described in item 10, wherein the second rotor fixing component is a limiting sleeve and a shaft end retaining ring respectively disposed on both sides of the electric slip ring rotor.

[0029] 12. The dual-mode slip ring as described in item 1, wherein the dual-mode slip ring further includes an interface component for connecting an imaging probe.

[0030] 13. An OCT-IVUS imaging system, comprising the dual-mode slip ring described in any one of items 1 to 12.

[0031] The dual-mode slip ring provided in this application enables the integration of OCT and IVUS 3D scanning methods with a small size and simple structure, achieving synchronous operation. Furthermore, the OCT-IVUS imaging system containing the aforementioned dual-mode slip ring provided in this application can simultaneously perform IVUS and OCT imaging, thus facilitating the complementary advantages of IVUS and OCT. Only a single interventional procedure is needed to obtain images with deep penetration and high resolution, significantly reducing surgical risks and improving analytical accuracy.

[0032] The above description is merely an overview of the technical solution of this application. In order to make the technical means of this application clearer and more understandable, so that those skilled in the art can implement it according to the contents of the specification, and in order to make the above and other objects, features and advantages of this application more obvious and understandable, the following is an example of a specific implementation of this application. Attached Figure Description

[0033] Figure 1 : Side view diagram of dual-mode slip ring;

[0034] Figure 2 Exploded view of a dual-mode slip ring;

[0035] Figure 3 Schematic diagram of fiber optic slip ring assembly;

[0036] Figure 4 Schematic diagram of the combination of electrical slip ring assembly and fiber optic slip ring assembly;

[0037] Figure 5: Schematic diagram of the first rotor fixing component, wherein Figure 5(a) is a side view of the first rotor fixing component and Figure 5(b) is a top view of the first rotor fixing component;

[0038] Figure 6 Schematic diagram of the OCT-IVUS imaging system.

[0039] Figure label:

[0040] 1. Fiber optic slip ring assembly; 1-1. Synchronous gear; 1-2. Interface assembly; 1-3. Rotor housing; 1-4. Inner bushing; 1-5. Bearing pressure ring; 1-6. First bearing; 1-7. Stator spindle; 1-8. Fiber optic fixing post; 1-9. Rotor end cover; 1-10. Rotor collimator; 1-11. Stator collimator; 1-12. Fiber optic cable;

[0041] 2. Slip ring assembly; 2-1. Stator body; 2-2. Rotor body; 2-3. Second bearing; 2-4. First rotor fixing component; 2-5. Stator coil; 2-6. Rotor coil;

[0042] 3. Limiting sleeve;

[0043] 4. Shaft end retaining ring. Detailed Implementation

[0044] The following embodiments of this application are only used to illustrate specific implementation methods of this application, and these embodiments should not be construed as limitations on this application. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this application shall be considered equivalent substitutions and fall within the protection scope of this application.

[0045] It should be noted that in this application, "proximal end" refers to the end closer to the user or operator, and "distal end" refers to the end closer to the recipient or patient.

[0046] This embodiment provides a dual-mode slip ring for use in an OCT-IVUS imaging system, such as Figures 1-4 As shown, it includes:

[0047] Fiber optic slip ring assembly 1;

[0048] The electric slip ring assembly 2 includes an electric slip ring stator and an electric slip ring rotor;

[0049] The electric slip ring rotor is sleeved and fixed (e.g., shaft-fitted) on the outside of the fiber optic slip ring assembly 1, and the electric slip ring stator is sleeved on the outside of the electric slip ring rotor.

[0050] The fiber optic slip ring assembly 1 and the electric slip ring assembly 2 are coaxially arranged.

[0051] In existing technologies, the principle of ring-scan ultrasound imaging (a type of IVUS) involves driving a single-element ultrasound transducer to rotate and scan using a drive mechanism. The transducer emits ultrasound waves under the excitation of a high-voltage pulse. An ultrasound sensor (such as the transducer) receives the echo signals reflected from tissues at different depths, converts them into electrical signals, and transmits them back via wires, ultimately synthesizing an ultrasound image. The imaging principle of SS-OCT (Swept source optical coherence tomography) involves a light source emitting coherent wide-scan pulsed light. This pulsed light is split into two beams: one beam travels through a mirror to the optical coherence point, is split by an optical coupler, and enters a photodetector; the other beam travels through a sample arm into the tissue being tested. The light reflected from tissues at different depths is received by a fiber optic probe, transmitted back via optical fiber, enters a photodetector via an optical coupler, and is then converted by FFT frequency domain conversion to finally synthesize an OCT image.

[0052] Therefore, it can be known that when an OCT-IVUS combined imaging probe (such as an imaging probe with an optical fiber probe for OCT imaging and a transducer for IVUS imaging) performs rotational scanning, it can perform OCT and IVUS simultaneously.

[0053] This embodiment mainly relates to a dual-mode slip ring, which can be connected to the above-mentioned OCT-IVUS combined imaging probe to simultaneously transmit the optical signal returned from the ultrasonic sensor in the imaging probe and the electrical signal returned from the optical receiver via optical fiber, so as to facilitate the synchronous imaging control of OCT and IVUS.

[0054] Specifically, firstly, such as Figures 1-4 As shown, a fiber optic slip ring assembly 1 is disposed in the middle of the dual-mode slip ring. An external drive mechanism can drive the rotor of the fiber optic slip ring assembly 1 to rotate along with the circuit connected to the imaging probe, thereby transmitting optical signals to achieve OCT imaging. Furthermore, an electrical slip ring assembly 2 is fitted outside the fiber optic slip ring assembly 1. The rotor of the electrical slip ring is fixed to the outside (rotor) of the fiber optic slip ring assembly 1. Thus, when the external drive mechanism drives the fiber optic slip ring assembly to rotate, the rotor of the electrical slip ring also rotates. The external fixation keeps the stator of the electrical slip ring stationary, thereby enabling optical signal transmission through the electrical slip ring assembly 2 to achieve IVUS imaging.

[0055] Specifically, the slip ring assembly 2 can be either a contact type or a non-contact type.

[0056] Therefore, the aforementioned dual-mode slip ring can integrate 3D scanning methods of OCT and IVUS signals with a small volume and simple structure, achieving synchronous operation. This facilitates the simultaneous realization of IVUS and OCT imaging, thereby helping to achieve complementary advantages between IVUS and OCT, while obtaining images with deep penetration and high resolution, greatly reducing the risks of surgery and improving the accuracy of analysis.

[0057] In one implementation, such as Figure 2 , Figure 3 As shown, the fiber optic slip ring assembly 1 includes a fiber optic slip ring stator, a fiber optic slip ring rotor sleeved on the outside of the fiber optic slip ring stator, a stator collimator 1-11 disposed on the fiber optic slip ring stator, and a rotor collimator 1-10 disposed on the fiber optic slip ring rotor.

[0058] This embodiment provides a structure of an optical fiber slip ring assembly 1. An external driving mechanism drives the optical fiber slip ring rotor to rotate with the imaging probe. The stator collimator 1-11 and the rotor collimator 1-10 realize optical signal transmission between the optical fiber slip ring rotor and the optical fiber slip ring stator.

[0059] In one implementation, such as Figure 2 , Figure 3 As shown, the fiber optic slip ring assembly 1 also includes two or more first bearings 1-6, which are sleeved on the outside of the fiber optic slip ring stator to form a rolling connection between the fiber optic slip ring stator and the fiber optic slip ring rotor.

[0060] The rolling connection achieved by the first bearing 1-6 reduces the friction and resistance between the fiber optic slip ring stator and the fiber optic slip ring rotor, thereby ensuring the stable operation and durability of the dual-mode slip ring.

[0061] In one implementation, such as Figure 2 , Figure 3 As shown, the fiber optic slip ring rotor includes a rotor end cover 1-9 sleeved on the outside of the fiber optic slip ring stator, an inner bushing 1-4 sleeved on the outside of the rotor end cover 1-9, and a rotor outer shell 1-3 sleeved on the outside of the inner bushing 1-4.

[0062] Preferably, the rotor collimator 1-11 is disposed on the shaft of the inner bushing 1-4;

[0063] More preferably, the fiber optic slip ring rotor further includes a synchronous gear 1-1 sleeved and fixed on the rotor housing 1-4.

[0064] This embodiment presents a structure for an optical fiber slip ring rotor.

[0065] Specifically, such as Figure 3 As shown, stepped holes are provided at both ends of the inner side of the rotor end cover 1-9 to accommodate two first bearings 1-6 sleeved on the outside of the fiber optic slip ring stator, and a bearing pressure ring 1-5 is provided at the far end of the first bearing 1-6, thereby fixing the far first bearing 1-6 through the stepped holes and the bearing pressure ring 1-5.

[0066] In addition, by separately setting up rotor end caps 1-9 that rotate relative to the stator of the fiber optic slip ring, when wear occurs on the relatively moving and easily worn parts (rotor end caps 1-9) and affects the use, only the worn parts (rotor end caps 1-9) need to be replaced, thereby reducing the cost of using the dual-mode slip ring. At the same time, it also facilitates the assembly of the fiber optic slip ring assembly.

[0067] The synchronous gear 1-1 is sleeved and fixed on the rotor housing 1-4, so that the external drive mechanism can drive the synchronous gear 1-1 to rotate, thereby driving the fiber optic slip ring rotor and the electric slip ring rotor to rotate with the imaging probe, which is conducive to achieving stable OCT-IVUS synchronous imaging control.

[0068] In one implementation, such as Figure 2 , Figure 3 As shown, the fiber optic slip ring stator includes a stator spindle 1-7 and a fiber optic fixing post 1-8 disposed on one side of the near end of the stator spindle; the stator collimator 1-11 is disposed at the axis of the stator spindle 1-7.

[0069] This embodiment provides a specific structure for the fiber optic slip ring stator. The stator spindle 1-7 extends into the interior of the fiber optic slip ring rotor, or in other words, the fiber optic slip ring rotor is fitted around the outside of the stator spindle 1-7. By rotating the fiber optic slip ring rotor relative to the stator spindle 1-7, the fiber optic slip ring can rotate with the imaging probe while simultaneously transmitting optical signals. A fiber optic fixing post 1-8 is provided near the stator spindle 1-7 to stably fix the fiber optic cable 1-12.

[0070] In addition, an annular protrusion or retaining ring can be provided at the near end of the stator spindle 1-7, so that the first bearing 1-6 at the near end can be stably fixed by the annular protrusion or retaining ring and the rotor end cover 1-9, thereby restricting the relative axial movement of the fiber optic slip ring stator and the fiber optic slip ring rotor, thus ensuring stable rotation between the two and achieving stable synchronous operation.

[0071] In one implementation, such as Figure 2 , Figure 4 As shown, the electric slip ring rotor includes a rotor body 2-2 and a rotor coil 2-6 disposed outside the rotor body 2-2;

[0072] The electric slip ring stator includes a stator body 2-1 and a stator coil 2-5 disposed inside the stator body 2-1.

[0073] This application discloses a specific structure of an electric slip ring assembly, specifically a non-contact electric slip ring. When the rotor body 2-2 rotates relative to the stator body 2-1, electrical signals are transmitted through the rotor coil 2-6 and the stator coil 2-5.

[0074] The arrangement of rotor coil 2-6 and stator coil 2-5 is existing technology, and this application does not impose specific restrictions, as long as it can realize the transmission of electrical signals between rotor coil 2-6 and stator coil 2-5.

[0075] In one implementation, such as Figure 2 , Figure 4 As shown, the electric slip ring assembly further includes two or more second bearings 2-3; the second bearings 2-3 are sleeved on the outside of the fiber optic slip ring assembly 1 to form a rolling connection between the fiber optic slip ring assembly 1 and the electric slip ring stator.

[0076] The rolling connection achieved by the second bearing 2-3 can reduce the friction and resistance between the electric slip ring stator and the fiber optic slip ring assembly 1, thereby ensuring the stable operation and durability of the dual-mode slip ring.

[0077] In one implementation, such as Figure 2 , Figure 4 As shown in Figure 5, the electric slip ring rotor also includes a first rotor fixing member 2-4, which prevents the rotor body 2-2 from rotating relative to the fiber optic slip ring assembly 1.

[0078] Specifically, such as Figure 2 , Figure 4 As shown in Figure 5, the first rotor fixing member 2-4 is in the shape of a ring and is sleeved on the outside of the optical fiber slip ring assembly 1.

[0079] The first rotor fixing member 2-4 is provided at least on one side of the rotor body 2-2;

[0080] The first rotor fixing member 2-4 and the rotor body 2-2 are respectively provided with mutually cooperating protrusions and grooves, and the first rotor fixing member 2-4 and the rotor fiber slip ring assembly 1 are respectively provided.

[0081] More specifically, such as Figure 2 As shown in Figure 5, two first rotor fixing members 2-4 are provided on both sides of the rotor body 2-2, and a protrusion (e.g., on the side of the first rotor fixing member 2-4 facing the rotor body 2-2) is provided. Figure 2As shown in Figure 5, a three-jaw evenly distributed method is preferably adopted. Corresponding grooves are provided on the rotor body 2-2, allowing the protrusion to be engaged within these grooves, thereby restricting the relative rotation between the first rotor fixing member 2-4 and the rotor body 2-2. Alternatively, two first rotor fixing members 2-4 can be located on both sides of the rotor body 2-2, with grooves provided on the side of the first rotor fixing member 2-4 facing the rotor body 2-2, and corresponding protrusions provided on the rotor body 2-2, allowing the protrusions to be engaged within these grooves, thus restricting the relative rotation between the first rotor fixing member 2-4 and the rotor body 2-2.

[0082] In addition, such as Figure 2 As shown in Figure 5, a protrusion (such as...) can be provided on the inner side of the first rotor fixing member 2-4. Figure 2 As shown in Figure 5, preferably using a three-claw evenly distributed method, a corresponding groove is provided on the outer side of the fiber optic slip ring assembly 1, so that the protrusion can be inserted into the groove, thereby restricting the rotation of the first rotor fixing member 2-4 relative to the fiber optic slip ring assembly 1. Of course, the groove on the outer side of the fiber optic slip ring assembly 1 can be provided starting from one end of the fiber optic slip ring assembly 1 along the axial direction of the fiber optic slip ring assembly 1, so that the first rotor fixing member 2-4 can be easily fitted onto the outer side of the fiber optic slip ring assembly 1 starting from one end. Alternatively, a groove can be provided on the inner side of the first rotor fixing member 2-4, and a protrusion can be provided on the outer side of the fiber optic slip ring assembly 1, so that the protrusion can be inserted into the groove, thereby restricting the rotation of the first rotor fixing member 2-4 relative to the fiber optic slip ring assembly 1.

[0083] By restricting the relative rotation between the first rotor fixing member 2-4 and the rotor body 2-2, and by restricting the relative rotation between the first rotor fixing member 2-4 and the fiber optic slip ring assembly 1, the relative rotation between the fiber optic slip ring assembly 1 and the rotor body 2-2 is restricted through the first rotor fixing member 2-4. This allows the fiber optic slip ring assembly 1 and the rotor body 2-2 to rotate stably together with the imaging probe at high speed, facilitating stable synchronous operation and maintaining dynamic balance of the dual-mode slip ring at high speed, thus ensuring stable synchronous control of OCT-IVUS imaging.

[0084] In one implementation, such as Figure 4 , Figure 2 As shown, the dual-mode slip ring also includes a second rotor fixing component, which prevents the electric slip ring rotor from moving axially along the fiber optic slip ring assembly 1. Specifically, the second rotor fixing component consists of a limiting sleeve 3 and a shaft end retaining ring 4 respectively disposed on both sides of the electric slip ring rotor.

[0085] Specifically, the shaft end retaining ring 4 is located on the far end side of the second bearing 2-3 at the far end, and the limiting sleeve 3 is located on the near end side of the second bearing 2-3 at the near end, thereby locking the two second bearings 2-3 between the limiting sleeve 3 and the shaft end retaining ring 4, preventing the second bearings 2-3 and the stator body 2-1 outside the second bearings 2-3 from moving axially relative to the fiber optic slip ring assembly 1.

[0086] More specifically, such as Figure 4 , Figures 1-4 As shown, two first rotor fixing parts 2-4 are arranged between the two second bearings 2-3, and a rotor body 2-2 is arranged between the two first rotor fixing parts 2-4. This allows the second rotor fixing parts (limiting sleeve 3, shaft end retaining ring 4) to prevent the electrical slip ring assembly 2 from moving axially relative to the fiber optic slip ring assembly 1. This ensures stable operation of the dual-mode slip ring as it rotates with the imaging probe, achieving stable synchronous operation of OCT-IVUS imaging.

[0087] In one implementation, such as Figure 6 As shown, the dual-mode slip ring also includes an interface component 1-2, which is used to connect to the imaging probe. Specifically, the imaging probe and the interface component 1-2 can be connected via an interface provided on a connecting line (including optical fiber or wire).

[0088] Specifically, interface components 1-2 can be located at the distal end of the fiber optic slip ring assembly 1. Regarding the specific structure of interface components 1-2, they can be interfaces used in existing OCT and IVUS systems, which are prior art. This application does not limit the specific structure or type of the interface components, as long as they can connect to the imaging probe to receive optical and electrical signals. For example, the interface components may specifically include an FC / APC female connector.

[0089] In addition, a wiring groove can be opened on the outside of the fiber optic slip ring assembly 1 (outside the rotor housing 1-3) to lead the rotor coil 2-6 to the interface assembly 1-2.

[0090] In one embodiment, such as ​ As shown, this application provides an OCT-IVUS imaging system, which includes the aforementioned dual-mode slip ring.

[0091] Specifically, the imaging structure (such as the aforementioned OCT-IVUS imaging probe, including an optical fiber probe for OCT and a transducer for IVUS) acquires the corresponding photoacoustic signals of the tissue under test through rotational scanning, and is connected to the dual-mode slip ring of this application through connecting lines (including optical fibers and wires). The electric slip ring stator of the dual-mode slip ring of this application and the optical fiber slip ring stator of the optical fiber slip ring assembly 1 are fixedly set, and the optical fiber slip ring assembly 1 and the electric slip ring rotor are driven by an external driving mechanism to rotate synchronously with the imaging structure (imaging probe), thereby synchronously coupling and transmitting the photoacoustic signals acquired by the imaging structure (imaging probe) to the IVUS-OCT system through the dual-mode slip ring to realize synchronous imaging control of OCT-IVUS.

[0092] In this embodiment, a high-frequency slip ring is selected, and more preferably, a non-contact slip ring. Of course, those skilled in the art will know that a non-contact slip ring can also be used.

[0093] The dual-mode slip ring and OCT-IVUS imaging system provided in this application can be used to easily achieve synchronous imaging control of IVUS and OCT, thereby complementing the two scanning mechanisms of IVUS and OCT. Compared with performing IVUS or OCT alone, combining IVUS and OCT can give full play to the dual advantages of high penetration of IVUS and high resolution of intravascular OCT. Only one interventional procedure and one imaging probe are needed to obtain images with deep penetration and high resolution at the same time, which greatly reduces the risk of surgery and improves the accuracy of analysis.

[0094] Although the embodiments of this application have been described above, this application is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, based on the guidance of this specification and without departing from the scope of protection of the claims of this application, can make many other forms, all of which are within the scope of protection claimed in this application.

Claims

1. A dual-mode slip ring for use in an OCT-IVUS imaging system, comprising: Fiber optic slip ring assembly; The slip ring assembly includes an slip ring stator and an slip ring rotor; The electric slip ring rotor is sleeved and fixed to the outside of the fiber optic slip ring assembly, and the electric slip ring stator is sleeved on the outside of the electric slip ring rotor. The fiber optic slip ring assembly and the electrical slip ring assembly are coaxially arranged; The electric slip ring rotor includes a rotor body and a rotor coil disposed on the outside of the rotor body; The electric slip ring stator includes a stator body and a stator coil disposed inside the stator body; The electric slip ring rotor further includes a first rotor fixing member, which prevents the rotor body from rotating relative to the fiber optic slip ring assembly; the first rotor fixing member is annular to be sleeved on the outside of the fiber optic slip ring assembly; the first rotor fixing member is at least disposed on one side of the rotor body; and mutually cooperating protrusions and grooves are respectively provided between the first rotor fixing member and the rotor body, and between the first rotor fixing member and the rotor fiber optic slip ring assembly. The dual-mode slip ring also includes an interface component for connecting an imaging probe.

2. The dual-mode slip ring as described in claim 1, characterized in that, The fiber optic slip ring assembly includes a fiber optic slip ring stator, a fiber optic slip ring rotor sleeved on the outside of the fiber optic slip ring stator, a stator collimator disposed on the fiber optic slip ring stator, and a rotor collimator disposed on the fiber optic slip ring rotor.

3. The dual-mode slip ring as described in claim 2, characterized in that, The fiber optic slip ring assembly also includes two or more first bearings, which are sleeved on the outside of the fiber optic slip ring stator to form a rolling connection between the fiber optic slip ring stator and the fiber optic slip ring rotor.

4. The dual-mode slip ring as described in claim 2, characterized in that, The fiber optic slip ring rotor includes a rotor end cover sleeved on the outside of the fiber optic slip ring stator, an inner bushing sleeved on the outside of the rotor end cover, and a rotor outer shell sleeved on the outside of the inner bushing.

5. The dual-mode slip ring as described in claim 4, characterized in that, The rotor collimator is mounted on the shaft of the inner bushing.

6. The dual-mode slip ring as described in claim 4, characterized in that, The fiber optic slip ring rotor also includes a synchronous gear sleeved and fixed on the rotor housing.

7. The dual-mode slip ring as described in claim 2, characterized in that, The fiber optic slip ring stator includes a stator spindle and a fiber optic fixing post disposed on one side of the proximal end of the stator spindle; The stator collimator is located at the center of the stator spindle.

8. The dual-mode slip ring as described in claim 1, characterized in that, The slip ring assembly also includes two or more second bearings; The second bearing is sleeved on the outside of the fiber optic slip ring assembly to form a rolling connection between the fiber optic slip ring assembly and the electric slip ring stator.

9. The dual-mode slip ring as described in claim 1, characterized in that, The dual-mode slip ring also includes a second rotor fixing component, which prevents the electric slip ring rotor from moving axially along the fiber optic slip ring assembly.

10. The dual-mode slip ring as described in claim 9, characterized in that, The second rotor fixing component consists of a limiting sleeve and a shaft end retaining ring respectively disposed on both sides of the electric slip ring rotor.

11. An OCT-IVUS imaging system, characterized in that, Includes the dual-mode slip ring according to any one of claims 1 to 10.

Images