Drive shaft of an intravenous ultrasound catheter transducer
An ultrasonic catheter and transmission shaft technology, which is applied in the field of transmission shafts, can solve problems such as poor imaging quality, deviation of the speed of ultrasonic transducer rotation and retraction from the preset value, and unsmooth movement, so as to achieve the effect of improving quality
Active Publication Date: 2019-08-02
SHENZHEN INSIGHT MED CO LTD
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Problems solved by technology
However, the transmission shafts currently used in the market usually have a large torque transmission capacity but are too rigid, and the movement in the blood vessel is not smooth, which is likely to cause blood vessel damage, or they are relatively flexible but have a small torque transmission capacity or a slow stress response. , so that the speed of rotation and retraction of the ultrasound transducer deviates from the preset value, and uneven rotation artifacts appear, which brings the risk of long operation time or poor imaging quality to the clinical application of intravascular ultrasound imaging
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[0024] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same reference numerals are given to the same components, and repeated descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratio of dimensions between components, the shape of components, and the like may be different from the actual ones.
[0025] In the following description, subheadings are used for description for convenience, but these subheadings are only for prompting, and are not intended to limit the content described under the subheadings to the subject of the subheadings.
[0026] figure 1 is an application schematic diagram showing the propeller shaft according to the embodiment of the present disclosure.
[0027] In this embodiment, the two ends of the transmission shaft 1 can be referred to as the proximal end 11 and the distal end 12 respectively. In this embodime...
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The invention relates to a drive shaft of an intravenous ultrasound catheter transducer. The drive shaft is characterized by comprising an inner layer structure and an outer layer structure; the innerlayer structure is formed into a first spring structure woven from a braided wire, and the pitch of the first spring structure is gradually increased from the distal end to the proximal end; and theouter layer structure covers the inner layer structure, the outer layer structure is formed into a second spring structure, the pitch of the second spring structure is gradually increased from the distal end to the proximal end, and the pitch of the second spring structure is more sparse than the pitch of the first spring structure. In this case, the mechanical properties of the inner and outer layer structures of the drive shaft are complementary, so that the stress response capability and torque transmission capability of the drive shaft are enhanced while the flexibility of the drive shaftcan be improved, pseudomorphism of uneven rotation is avoided, the torque control performance of the intravenous ultrasound catheter long-range control is improved, the overall handling is improved, the operation time is effectively reduced, and medical services are provided more efficiently.
Description
technical field [0001] The present disclosure relates to a drive shaft for an intravascular ultrasound catheter transducer. Background technique [0002] IVUS system, also known as intravascular ultrasound imaging system, is mainly composed of IVUS catheter, IVUS withdrawal system and IVUS host system. In actual operation, the IVUS catheter including the micro-ultrasound transducer and its transmission shaft is generally pushed to the vascular lesion area through radial artery or femoral artery puncture. During the retraction process, the catheter core will obtain the lumen and wall section structure information of the blood vessel through the micro-ultrasonic transducer at the front of the core, and then perform imaging and image processing in the host system, and finally image the blood vessel within a specific range The transverse section and longitudinal section of the lumen and wall of the tube are displayed in the form of images respectively. [0003] During the dete...
Claims
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Login to View More IPC IPC(8): A61B8/12A61B8/08F16C3/02
CPCA61B8/12A61B8/0891A61B8/4444F16C3/023A61B8/445A61B8/4461
Inventor 陈丽丽胡文城李连波
Owner SHENZHEN INSIGHT MED CO LTD