Catheter probe
By adopting multi-transducer and spring hinge structures in ICE catheter probes, flexible adjustment of transducer angle is achieved, and the trauma problem caused by the rotation of traditional catheters in narrow blood vessels is solved, and the quality of ultrasound images and imaging efficiency are improved. Real-time observation requirements of complex structures.
Patent Information
- Application Number
- CN202411545924.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-01-03
AI Technical Summary
The rotation or movement of a single transducer in a traditional ICE catheter in a narrow, bent or calcified blood vessel can cause vascular trauma, and the ultrasound image quality and continuity are not high, making it difficult to achieve efficient imaging at multiple angles.
Design a multi-transducer catheter probe to adjust the transducer angle through a spring hinge and a wedge-shaped block structure, so that multiple transducers can simultaneously transmit and receive ultrasonic data from different directions, reducing the rotation and movement of the conduit. The traction line system is used to adjust the arrangement angle of the transducer.
It reduces the risk of vascular trauma, improves the clarity and real-time of ultrasound images, speeds up data acquisition, simplifies operations, adapts to different imaging needs, and forms more accurate three-dimensional volume data.
Smart Images
Figure CN119235357A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a catheter probe and belongs to the technical field of medical equipment. Background Art
[0002] ICE (Intracardiac Echocardiography) is an advanced imaging technology used to observe the internal structure and function of the heart in real time. Its working principle is to integrate the ultrasound probe on the catheter, enter the heart through the blood vessels, and directly image from the inside to help doctors evaluate the anatomy and function of the heart more clearly. Traditional ICE catheters mainly use two-dimensional imaging technology to generate cross-sectional images of the heart through ultrasound. This technology is mature. 3DICE technology is based on traditional two-dimensional ultrasound and generates three-dimensional images by integrating image data from multiple planes. This technology allows doctors to observe the anatomical structure of the heart from multiple angles and improve the ability to identify complex structures and lesions. 4D ICE technology is an extension of 3DICE technology, and the fourth dimension refers to the time dimension. In other words, 4D ICE technology can generate real-time, dynamic three-dimensional cardiac images to show the movement of the heart over time.
[0003] Usually there is only one transducer in the ICE catheter, which is mechanically moved or rotated on different planes to perform ultrasound scanning on multiple slices. After obtaining 2D slice images at different angles, the system will stitch and align these images to form a three-dimensional volume data by using a specific algorithm. However, the rotation or displacement of the catheter and probe, especially in narrow, curved or calcified blood vessels, can cause trauma and damage to the blood vessels, and the movement or rotation can result in low quality and continuity of the ultrasound image. Summary of the invention
[0004] Based on the shortcomings of a single transducer in a traditional probe, the purpose of the present invention is to provide a catheter probe with multiple transducers, which can achieve changes in the arrangement angles of the transducers through a mechanical mechanism so that each transducer can transmit and receive ultrasound data from different directions at the same time.
[0005] In order to achieve the above-mentioned purpose, a catheter probe of the present invention includes a support tube and a transducer unit arranged in the support tube, the transducer unit includes two base plates hinged to each other by a spring hinge, a transducer, a wedge block and a traction line respectively arranged on the two base plates; two support seats are arranged in the support tube, and both ends of the rotating shaft of the spring hinge are installed on the support seats; a channel matching with the wedge block is formed between the two base plates, the wedge block is fixed on the traction line, and the traction line can pull the wedge block to move back and forth in the channel to adjust the opening angle of the two base plates.
[0006] The rotating shaft is located on the axis of the supporting tube.
[0007] Two through holes for the traction line to pass through are respectively arranged on each support seat.
[0008] The support seat is a vertical plate arranged on the cross-sectional diameter of the support tube.
[0009] A support platform is also arranged in the support tube. The support platform is located at a side of the wedge block away from the bottom plate and is used to support the wedge block.
[0010] The base plate includes a mounting surface, and the transducer is fixed on the mounting surface; when the opening angle of the mounting surfaces of the two base plates is 180° so that the two mounting surfaces are located in the same plane, the two transducers are located on the upper side of the plane, and the rotating shaft and the channel are located on the lower side of the plane.
[0011] There is a gap between the two transducers and on the upper side of the plane, and the gap is used for the traction wire to pass through.
[0012] The rotating shaft and the traction line are located on the central axis plane, and the two transducers are symmetrically arranged on both sides of the central axis plane.
[0013] The wedge-shaped block is in the shape of an elongated strip, one end of which is a wide head end, and the other end of which is a narrow head end; the wedge-shaped block is inserted into the channel along its long direction.
[0014] The channel is formed between two inclined surfaces respectively located on two bottom plates, and the two inclined surfaces are symmetrically arranged on both sides of the central axis surface; the cross section of the wedge block is an isosceles trapezoid.
[0015] When the wedge block moves within its stroke range, the two side edges of the top surface of the wedge block are always in contact with the inclined surfaces of the two bottom plates respectively.
[0016] The opening angle range of the two mounting surfaces is 90° to 180°.
[0017] By adopting the above technical solution, the catheter probe of the present invention has the following beneficial effects compared with the prior art:
[0018] 1. Since the transducer can achieve multi-directional ultrasonic scanning by adjusting the angle without excessive rotation or movement of the catheter, it can reduce the risk of trauma and damage to the blood vessels when the catheter moves in narrow, curved or calcified blood vessels.
[0019] 2. The multi-transducer design can acquire ultrasound data at multiple angles simultaneously, no longer relying on the movement or rotation of a single transducer, avoiding problems of image discontinuity or quality degradation, thereby improving image clarity and real-time performance.
[0020] 3. Multiple transducers work simultaneously, which speeds up data acquisition, reduces operation time, and improves imaging efficiency, especially in real-time observation of complex structures such as the inside of the heart.
[0021] 4. Through the spring hinge and wedge block structure, the transducer angle can be precisely adjusted to meet different imaging requirements and expand the flexibility of application.
[0022] 5. No longer need complex mechanical rotation devices, the arrangement angle of the transducer can be adjusted through the traction line system, which is easy to operate and avoids the operational difficulty caused by frequent adjustment of the angle of the ultrasound probe.
[0023] 6. Since multiple transducers work simultaneously, the acquired multi-plane images can be better stitched and aligned, which helps to form more accurate three-dimensional volume data. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic structural diagram of the catheter probe of the present invention.
[0025] Figure 2 It is a partial cross-sectional view of the catheter probe of the present invention.
[0026] Figure 3 It is a partial cross-sectional view of the bottom plate of the catheter probe of the present invention in a flipped state.
[0027] Figure 4 Schematic diagram of the structure of the wedge block and the traction line.
[0028] Figure 5 This is a schematic diagram of the bottom plate flipping state after the wedge block is sent into the channel.
[0029] Figure 6 Schematic diagram of the state where the wide head end of the wedge block supports the base plate.
[0030] Figure 7 It is a schematic diagram of the flattened state of the bottom plate when the wedge-shaped block moves outward in the channel.
[0031] Figure 8 This is a schematic diagram of the state where the narrow head end of the wedge block supports the base plate. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below through the accompanying drawings and specific embodiments.
[0033] like Figure 1As shown, the present invention provides a catheter probe 7 of an intracardiac ultrasound catheter device, the catheter probe 7 is located at the end of a catheter 6, the catheter 6 is connected to a handle 1, and a first direction adjustment ring 4 and a second direction adjustment ring 5 for adjusting the bending direction of the catheter are provided on the handle 1, and a locking ring 3 and a transducer angle adjustment ring 2 are also provided. The bending direction of the catheter 6 can be adjusted by the first direction adjustment ring 4 and the second direction adjustment ring 5, and the locking ring 3 is used to achieve compression and locking of the first direction adjustment ring 4 and the second direction adjustment ring 5. The transducer angle adjustment ring 2 is used to adjust the angle between the two transducers in the catheter probe 7.
[0034] Specifically, if Figure 2-8 As shown, the catheter probe 7 includes a catheter ball head 8, a support tube 9 and a transducer unit disposed in the support tube 9, wherein the transducer unit includes two bottom plates 11 hinged to each other by a spring hinge 17, a transducer 10 disposed on the two bottom plates 11, a wedge block 13 and a traction line 14. Two support seats 16 are disposed in the support tube 9. In this embodiment, the support seat 16 is a vertical plate disposed on the cross-sectional diameter of the support tube 9. The rotating shaft 12 of the spring hinge 17 is located on the axis of the support tube 9 and its two ends are mounted on the support seat 16.
[0035] A channel matched with the wedge block 13 is formed between the two bottom plates 11 . The wedge block 13 is fixed on a traction line 14 . The traction line 14 can pull the wedge block 13 to move back and forth in the channel so as to adjust the opening angle of the two bottom plates 11 .
[0036] Two through holes 15 for the traction wire 14 to pass through are respectively provided on each support seat 16. Figure 4 As shown, the traction line 14 and the wedge block 13 form a U-shape, and both ends of the traction line 14 extend along the catheter to the proximal end. The traction of the wedge block 13 is achieved by tensioning both ends of the traction line 14 respectively.
[0037] A support platform 19 is further disposed in the support tube 9 . The support platform 19 is located at a side of the wedge block 13 away from the bottom plate 11 and is used to support the wedge block 13 .
[0038] The bottom plate 11 includes a mounting surface 110, and the transducer 10 is fixed on the mounting surface 110. When the mounting surfaces 110 of the two bottom plates 11 have an opening angle of 180° so that the two mounting surfaces 110 are located in the same plane, Figure 8 As shown, the two transducers 10 are located on the upper side of the plane, and the rotating shaft 12 and the channel are located on the lower side of the plane.
[0039] In this embodiment, there is a gap 111 between the two transducers 10 and located on the upper side of the plane, and the gap 111 is used for the traction line 14 to pass through. The rotating shaft 12 and the traction line 14 are located on the central axis plane C, and the two transducers 10 are symmetrically arranged on both sides of the central axis plane C. The wedge block 13 is long and has a wide head end 131 at one end and a narrow head end 132 at the other end; the wedge block 13 is inserted into the channel along its long direction. The channel is formed between two inclined surfaces 112 respectively located on the two bottom plates 11, and the two inclined surfaces 112 are symmetrically arranged on both sides of the central axis plane C; the cross-section of the wedge block 13 is an isosceles trapezoid. When the wedge block 13 moves within its travel range, the two side edges B of the top surface of the wedge block 13 are always in contact with the edges A of the inclined surfaces 112 of the two bottom plates 11 respectively. As a preferred embodiment, the opening angle range of the two mounting surfaces 110 is 90° to 180°. Figure 5 , 6 As shown, when the wedge block 13 is fed in the direction of the channel, the wedge block 13 lifts up the two bottom plates 11 to make them rotate, thereby reducing the angle between the two transducers 10. Figure 7 , 8 As shown, when the wedge block 13 is pulled outward in the channel, the two bottom plates 11 are gradually flattened under the action of the spring return force in the spring hinge 17. Since the wedge block 13 always applies a supporting force to the bottom plate 11 during the above process, when the wedge block 13 stops, the two bottom plates 11 can be kept at the corresponding angle position under the action of the supporting force and the spring return force.
[0040] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.
Claims
1. A catheter probe, characterized in that: It includes a support tube and a transducer unit arranged in the support tube, wherein the transducer unit includes two base plates hinged to each other by a spring hinge, transducers, a wedge block and a traction line respectively arranged on the two base plates; two support seats are arranged in the support tube, and both ends of the rotating shaft of the spring hinge are installed on the support seats; a channel matched with the wedge block is formed between the two base plates, the wedge block is fixed on the traction line, and the traction line can pull the wedge block to move back and forth in the channel to adjust the opening angle of the two base plates.
2. The catheter probe according to claim 1, characterized in that: The rotating shaft is located on the axis of the supporting tube.
3. The catheter probe according to claim 1, characterized in that: A support platform is also arranged in the support tube. The support platform is located at a side of the wedge block away from the bottom plate and is used to support the wedge block.
4. The catheter probe according to any one of claims 1 to 3, characterized in that: The base plate includes a mounting surface, and the transducer is fixed on the mounting surface; when the opening angle of the mounting surfaces of the two base plates is 180° so that the two mounting surfaces are located in the same plane, the two transducers are located on the upper side of the plane, and the rotating shaft and the channel are located on the lower side of the plane.
5. The catheter probe according to claim 4, characterized in that: There is a gap between the two transducers and on the upper side of the plane, and the gap is used for the traction wire to pass through.
6. The catheter probe according to any one of claims 1 to 3, characterized in that: The rotating shaft and the traction line are located on the central axis plane, and the two transducers are symmetrically arranged on both sides of the central axis plane.
7. The catheter probe according to claim 6, characterized in that: The wedge-shaped block is in the shape of an elongated strip, one end of which is a wide head end, and the other end of which is a narrow head end; the wedge-shaped block is inserted into the channel along its long direction.
8. The catheter probe according to claim 7, characterized in that: The channel is formed between two inclined surfaces respectively located on two bottom plates, and the two inclined surfaces are symmetrically arranged on both sides of the central axis surface; the cross section of the wedge block is an isosceles trapezoid.
9. The catheter probe according to claim 7, characterized in that: When the wedge block moves within its stroke range, the two side edges of the top surface of the wedge block are always in contact with the inclined surfaces of the two bottom plates respectively.
10. The catheter probe according to any one of claims 1 to 3, characterized in that: The opening angle range of the two mounting surfaces is 90° to 180°.