CN111938694B - Transmission device of ultrasonic transducer and manufacturing method thereof - Google Patents
Transmission device of ultrasonic transducer and manufacturing method thereof Download PDFInfo
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- CN111938694B CN111938694B CN202010790940.0A CN202010790940A CN111938694B CN 111938694 B CN111938694 B CN 111938694B CN 202010790940 A CN202010790940 A CN 202010790940A CN 111938694 B CN111938694 B CN 111938694B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
- A61B8/4461—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
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Abstract
The present disclosure relates to a transmission device of an ultrasonic transducer, comprising: the ultrasonic transducer comprises a bearing part, a fixing part and a fixing part, wherein the bearing part is provided with a connecting part, a supporting part and a guiding part which are integrally formed, the supporting part is provided with a supporting surface for placing and fixing the ultrasonic transducer, and the connecting part is provided with a lead hole; a transition part connected with the coupling part, the bearing part is formed through injection molding, and the coupling part is at least partially embedded in the transition part and fixed with the transition part; and the transmission shaft is connected with the bearing part through the transition part and is used for translating and rotating the bearing part, a lead wire connected with the ultrasonic transducer is arranged on the transmission shaft, and the lead wire is connected with the ultrasonic transducer through the lead wire hole, wherein the support surface and the axial direction of the transmission shaft form a preset angle so that the ultrasonic transducer is inclined relative to the axial direction of the transmission shaft. In this case, the ultrasonic transducer can be fixed relatively easily, and adverse effects on the ultrasonic transducer during the fixing process can be reduced.
Description
Technical Field
The present disclosure relates to an ultrasonic transducer driving device and a method for manufacturing the same.
Background
Cardiovascular disease has become a leading cause of death worldwide (e.g., coronary heart disease). Blood vessels are currently diagnosed and monitored by ultrasound imaging of the blood vessel by intravascular ultrasound imaging systems (i.e., IVUS systems). In intravascular ultrasound imaging systems, IVUS systems typically include an extracorporeal device, and an intravascular device disposed within a blood vessel for acquiring images of the blood vessel. The intravascular device comprises a catheter, a transmission device arranged in the catheter and an ultrasonic transducer fixed on the transmission device, wherein the transmission device comprises a transmission shaft and a transducer protective shell. The ultrasonic transducer is arranged in the transducer protective shell, and the rear end of the transducer protective shell is connected with the transmission shaft.
Ultrasonic transducers are generally rectangular, multi-layered structures generally comprising, from bottom to top, a backing layer, an electrode layer, a wafer layer, and a matching layer, the electrode layer being typically connected to the positive and negative poles of a coaxial cable, the components connected to the back end being in communication to form a circuit. The transducer protective housing is typically made of a metallic material and is formed as a rectangular cavity structure that can accommodate the ultrasonic transducer. In clinical applications, in order to make the ultrasound transducer perform better ultrasound imaging in the blood vessel, it is often necessary to arrange the ultrasound transducer in a tilted manner within the transducer protective housing. In the prior art, the ultrasonic transducer is placed in the cavity of the transducer protection housing, the cavity is filled with glue such as acrylic resin, epoxy resin and the like, and the angle of the ultrasonic transducer is continuously adjusted to fix the ultrasonic transducer in a manner of inclining the ultrasonic transducer by a certain angle relative to the axial direction of the catheter.
However, some problems are encountered in the process of fixing the ultrasonic transducer, for example, the tilt angle is difficult to control by using a glue fixing method, and the glue is easy to overflow to the surface of the ultrasonic transducer to influence the acoustic performance of the ultrasonic transducer.
Disclosure of Invention
The present disclosure has been made in view of the above-mentioned state of the art, and an object thereof is to provide an ultrasonic transducer transmission device and a method of manufacturing the same, which can easily fix an ultrasonic transducer and reduce adverse effects on the ultrasonic transducer during the fixing process.
To this end, a first aspect of the present disclosure provides a transmission device of an ultrasonic transducer, characterized in that: the method comprises the following steps: a bearing part having an integrally molded coupling part, a support part and a guide part, the support part having a support surface for placing and fixing an ultrasonic transducer, the coupling part having a lead hole; a transition part connected with the coupling part, the carrying part being formed via injection molding, and the coupling part being at least partially embedded in and fixed with the transition part; and a transmission shaft connected to the carrier part via the transition part and used for translating and rotating the carrier part, wherein a wire connected to the ultrasonic transducer is disposed on the transmission shaft, and the wire is connected to the ultrasonic transducer via the wire hole, wherein the support surface and the axial direction of the transmission shaft have a predetermined angle to incline the ultrasonic transducer relative to the axial direction of the transmission shaft.
In the transmission device related to the present disclosure, the ultrasonic transducer is fixed on the supporting surface by arranging the supporting surface on the bearing part of the transmission device and forming an included angle between the supporting surface and the axial direction of the transmission shaft of the transmission device, so that the ultrasonic transducer is inclined to perform better ultrasonic imaging. In this case, the ultrasonic transducer can be fixed relatively easily, and adverse effects on the ultrasonic transducer during the fixing process can be reduced.
In addition, in the transmission device provided by the first aspect of the present disclosure, optionally, the transition portion is formed as a metal ring, and the metal ring has an engaging hole, and the coupling portion is fitted into the engaging hole of the transition portion. This enables the transition portion to be connected to the coupling portion in a snap-fit manner.
Further, in the transmission provided in the first aspect of the present disclosure, optionally, a ring or balls provided along an outer periphery of the guide portion is provided at the guide portion. In this case, when the actuator is operated, the vibration of the ultrasonic transducer can be reduced, and the ultrasonic transducer can be made to operate better.
Further, in the transmission provided in the first aspect of the present disclosure, optionally, the preset angle is 3 to 20 °. Thereby, the ultrasonic transducer can be tilted at a preset angle.
In addition, in the transmission provided in the first aspect of the present disclosure, optionally, a filter structure for filtering air bubbles is further provided at an outer periphery of the coupling portion or the transition portion. In this case, the air bubbles can be filtered.
Further, in the transmission provided in the first aspect of the present disclosure, optionally, an inner diameter of the transition portion is tapered as it goes away from the coupling portion. This enables a better connection of the transition to the drive shaft.
In addition, in the transmission device provided in the first aspect of the present disclosure, optionally, a corner of the bearing portion near the lead hole is rounded. Thereby better protecting the wire.
A second aspect of the present disclosure provides a method for manufacturing a transmission device of an ultrasonic transducer, the transmission device including a carrier portion having a support surface for placing the ultrasonic transducer, a transition portion, and a transmission shaft connected to the carrier portion via the transition portion, the method including: the method comprises the following steps: preparing an annular transition part, integrally forming a bearing part connected with the transition part through an injection molding process, and partially embedding the bearing part into the transition part and fixing the bearing part with the transition part in the injection molding process; fixing the ultrasonic transducer to the supporting surface, wherein a preset angle is formed between the supporting surface and the axial direction of the transmission shaft; and welding the drive shaft to the transition and connecting a wire to the ultrasonic transducer via the lead hole.
In the present disclosure, an annular transition portion may be prepared first, and a bearing portion connected to the transition portion may be formed through an injection molding process, and the bearing portion may be partially embedded in the transition portion. The bearing part can be formed with a supporting surface which is at a preset angle and used for fixing the ultrasonic transducer. The drive shaft may be connected to the carrier portion through a transition portion and the lead wire is connected to the ultrasonic transducer through a lead hole. This makes it possible to obtain a transmission device capable of fixing the ultrasonic transducer relatively easily.
In addition, in the manufacturing method provided by the second aspect of the present disclosure, optionally, the bearing part is formed by injection molding of a hydrophilic material. In this case, the auxiliary liquid can be better flowed toward the distal end, and the influence of the bubble can be reduced.
Further, in the manufacturing method provided in the second aspect of the present disclosure, optionally, the ultrasonic transducer is fixed to the support surface by means of dispensing so as to be inclined with respect to the axial direction of the transmission shaft. In this case, the ultrasonic transducer can be easily fixed.
According to the present disclosure, it is possible to provide an ultrasonic transducer transmission device and a method of manufacturing the same, which can easily fix an ultrasonic transducer and ensure a normal operation of the ultrasonic transducer.
Drawings
Fig. 1 is a diagram illustrating an application scenario of an intravascular device according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram showing a transmission according to an example of the present disclosure.
Fig. 3 is a schematic structural diagram illustrating a load bearing portion and a transition portion according to an example of the present disclosure.
Fig. 4 is a schematic cross-sectional view of fig. 3 illustrating an example of the present disclosure.
Fig. 5 is a schematic structural view showing a bearing part according to an example of the present disclosure.
Fig. 6 is a schematic diagram showing a division of a carrier part according to an example of the present disclosure.
Fig. 7 is a schematic diagram illustrating an application of an ultrasonic transducer disposed on a carrier according to an example of the present disclosure
Fig. 8 shows a flow diagram of a method of manufacturing an actuator of an ultrasound transducer according to an example of the present disclosure.
Detailed Description
Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.
In addition, the headings and the like referred to in the following description of the present disclosure are not intended to limit the content or scope of the present disclosure, but merely serve as a reminder for reading. Such a subtitle should neither be understood as a content for segmenting an article, nor should the content under the subtitle be limited to just the scope of the subtitle.
The transmission device of the ultrasonic transducer related to the present disclosure can be applied to an intravascular ultrasonic imaging system. Through the transmission device of the ultrasonic transducer, the ultrasonic transducer can be fixed easily, adverse effects on the ultrasonic transducer in the fixing process can be reduced, and intravascular images with high quality can be obtained.
The transmission to which the present disclosure relates is described in detail below with reference to the accompanying drawings.
Fig. 1 is a view showing an application scenario of an intravascular device 1 according to an embodiment of the present disclosure.
In some examples, an intravascular ultrasound imaging system may include an extracorporeal device (not shown) and an intravascular device 1. The extracorporeal device may be connected to the intravascular device 1, and the intravascular device 1 may collect information inside blood vessels and transmit the collected information to the extracorporeal device. In some examples, the intravascular device 1 may have a distal side distal to the extracorporeal device and a proximal side proximal to the extracorporeal device.
In some examples, the intravascular device 1 may include a catheter 10, an actuator 20, and an ultrasound transducer 30 (see fig. 1). Wherein the ultrasound transducer 30 may be arranged on the actuator 20 (see fig. 7) and the actuator 20 may be moved within the catheter 10. In addition, the ultrasonic transducer 30 can perform information acquisition by transmitting and receiving ultrasonic beams, for example, performing ultrasonic imaging.
In some examples, the intravascular device 1 may be inserted into a subject, such as a blood vessel 40, while the intravascular ultrasound imaging system is operating, to perform information acquisition within the blood vessel (see fig. 1). Specifically, during an intervention procedure, a medical professional may first puncture a needle from a site (e.g., a radial artery or a femoral artery) on a subject and advance a medical guidewire along the blood vessel to a target area within the blood vessel, then advance the catheter 10 along the medical guidewire to the target area, and then move the actuator 20 within the catheter 10 and place the ultrasound transducer 30 at the target location, and the ultrasound transducer 30 may emit and receive ultrasound beams within the blood vessel.
In this case, during the movement of the actuator 20, the ultrasonic transducer 30 can acquire the blood vessel information of the target region, such as the blood vessel lumen and wall section structure information of the target region, by emitting and receiving the ultrasonic sound beam in the blood vessel. In some examples, the vascular target region may be a vascular lesion region such as stenotic lesion 41 (see fig. 1). The target location may be the side near the distal side of the stenotic lesion 41, for example in the embodiment shown in fig. 1, the target location may be at a within the blood vessel 40.
In some examples, as shown in fig. 1, the catheter 10 may be elongate tubular. The catheter 10 may have a catheter lumen 11 for placement of the actuator 20. The inner diameter of the catheter lumen 11 may be no smaller than the outer diameter of the actuator 20. In such a case, the actuator 20 may be disposed within the catheter lumen 11, and the actuator 20 may be movable (e.g., translatable and rotatable) relative to the catheter 10.
In some examples, the cross-section of the catheter 10 may be circular in shape. Thereby, friction between the catheter 10 and the blood vessel 40 can be reduced, thereby reducing the risk of injury to the blood vessel 40.
In some examples, the catheter 10 may be made of a material that has good biocompatibility, reliable flexibility, good corrosion resistance, and anti-thrombotic properties. For example, it may be a polymer or composite material. In this case, the catheter 10 can be placed in the blood vessel 40 more safely, and the occurrence of other adverse symptoms can be reduced. In some examples, the catheter 10 may be made of a material that is transparent to ultrasound signals and has little effect. For example, the intravascular ultrasound imaging system can acquire vascular information by transmitting and receiving ultrasound signals (i.e., ultrasound beams) with the ultrasound transducer 30, and the catheter 10 can be made of a material with acoustic impedance close to that of blood.
Fig. 2 is a schematic structural diagram showing a transmission 20 according to an example of the present disclosure.
In some examples, as shown in fig. 1, the transmission 20 may be disposed in the catheter lumen 11 of the catheter 10 during an interventional procedure. In some examples, transmission 20 may include a drive shaft 210 and a carrier 230. In some examples, transmission 20 may also include a transition portion 220 (see fig. 2).
In some examples, as described above, transmission 20 may include a drive shaft 210. In some examples, the outer diameter of the drive shaft 210 may be no greater than the inner diameter of the catheter lumen 11 of the catheter 10 to facilitate placement of the drive shaft 210 in the catheter lumen 11 of the catheter 10.
In some examples, the drive shaft 210 may be elongated. In some examples, drive shaft 210 is flexible. In this case, the drive shaft 210 can be adapted to the catheter 10 to travel in a curved blood vessel, whereby the possibility of damage to the drive shaft 210 can be reduced.
In some examples, the drive shaft 210 may have an internal cavity (not shown). In this case, transmission wires (also referred to as "wires", see fig. 7, described later in detail) connected to the ultrasonic transducer 30 and the extracorporeal device, respectively, may be disposed along the internal cavity.
In some examples, drive shaft 210 may be connected to an extracorporeal device (not shown). The extracorporeal device may control the drive shaft 210 to move (e.g., rotate and retract) while the intravascular ultrasound imaging system is operating.
In some examples, drive shaft 210 may be connected with transition 220. The drive shaft 210 may be connected with a carrier 230 via a transition 220. In other examples, drive shaft 210 may also be directly connected to carrier 230. In this case, the carrying portion 230 of the transmission 20 may follow the transmission shaft 210.
In some examples, the surface of the portion of the drive shaft 210 proximate to the transition portion 220 may be coated with a hydrophilic coating or have its hydrophilic properties increased by plasma surface modification or the like.
In some examples, drive shaft 210 may take a helical configuration (not shown). For example, the transmission shaft 210 may be of a structure similar to a coil spring type. Thereby enabling to enhance the ability of the propeller shaft 210 to transmit torque.
In some examples, as described above, transmission 20 may also include transition portion 220.
Fig. 3 is a schematic diagram illustrating the structure of the load bearing part 230 and the transition part 220 according to an example of the present disclosure. Fig. 4 is a schematic cross-sectional view of fig. 3 illustrating an example of the present disclosure. Fig. 5 is a schematic structural view illustrating a carrier part 230 according to an example of the present disclosure.
In some examples, the transition 220 may be cylindrical. For example, the transition portion 220 may be cylindrical (see fig. 3). In some examples, the transition portion 220 may have a through hole 221 disposed in an axial direction. In some examples, the cross-sectional shape of the through-hole 221 may be circular. However, the present disclosure is not limited to this, and in some examples, the cross-sectional shape of the through-hole 221 may be a regular shape such as a triangle, a square, a quincunx, or other irregular shapes. In other examples, the cross-sectional shape of the through hole 221 may include various shapes, such as a square cross-sectional shape near the bearing portion 230, a circular cross-sectional shape near the transmission shaft 210, and the like.
In some examples, the transition portion 220 may be fabricated from a metallic material. For example, the transition portion 220 may be made of 303, 304, or 316 stainless steel or other easily formable metal material. In some examples, the transition portion 220 may be made of other materials, such as plastic. In the example to which embodiments of the present disclosure relate, the transition portion 220 may be formed as a metal ring. The transition portion 220 may have a length.
In some examples, the surface of the transition portion 220 may be coated with a hydrophilic coating or its hydrophilic properties may be increased by plasma surface modification or the like.
In some examples, one end of the transition portion 220 may be connected with the bearing portion 230. The other end of the transition portion 220 may be connected with the transmission shaft 210 (see fig. 2). In this case, the transmission shaft 210 may be connected with a later-described bearing part 230 via the transition part 220, thereby enabling the bearing part 230 to follow the transmission shaft 210. But examples of the present disclosure are not limited thereto, and the driving shaft 210 may be directly connected with the bearing part 230.
In some examples, transition 220 may be coupled to drive shaft 210 by welding. In other examples, transition portion 220 may be coupled to drive shaft 210 in other manners. For example, the transition portion 220 is coupled to the transmission shaft 210 by a snap-fit method or a screw-fit method.
In some examples, the inner diameter of the through bore 221 of the transition portion 220 may be greater than the outer diameter of the drive shaft 210. In some examples, if the inner diameter of through-hole 221 is greater than the outer diameter of drive shaft 210, the inner diameter of the portion of transition portion 220 near drive shaft 210 may gradually decrease as transition portion 220 approaches drive shaft 210. That is, the inner diameter of the transition portion 220 may taper away from the carrier portion 230. In this case, the portion of transition portion 220 near drive shaft 210 may better mate with drive shaft 210. For example, the inner diameter of the portion of the transition portion 220 adjacent to the transmission shaft 210 may be slightly larger than the outer diameter of the transmission shaft 210, thereby enabling the transition portion 220 and the transmission shaft 210 to be connected by means of shrink-fit welding or brazing.
However, examples of the present disclosure are not limited thereto, and in some examples, the inner diameter of the through hole 221 may be not smaller than the outer diameter of the transmission shaft 210 and connected with the transmission shaft 210. For example, a stepped hole may be cut in the inner wall of the through hole 221, and the transition portion 220 may be connected to the transmission shaft 210 by stack welding or brazing. In other examples, transition portion 220 may have an outer diameter that is less than an outer diameter of drive shaft 210 and coupled to drive shaft 210. For example, transition portion 220 may be coupled to drive shaft 210 by butt welding.
In some examples, the transition portion 220 may be connected with the carrier portion 230 by a snap-fit manner. For example, the load bearing portion 230 may be partially embedded in the transition portion 220 (see fig. 2 and 3, described later). In some examples, as shown in fig. 2 and 3, the transition portion 220 may have several snap holes 222 on a sidewall thereof. The engagement hole 222 may communicate with the through hole 221 of the transition portion 220. This enables the transition portion 220 and the receiving portion 230 to be connected by engagement. However, the transition portion 220 may be snap-connected to the bearing portion 230 in other manners. For example, the inner wall of the through hole 221 of the transition portion 220 may be provided with a protrusion.
In other examples, the transition portion 220 may be connected with the bearing portion 230 in other manners. For example, the transition portion 220 may be coupled to the carrier portion 230 by bolting, gluing, or the like.
In some examples, the through bore 221 of the transition portion 220 may communicate with an internal cavity of the drive shaft 210. Thereby enabling easy deployment of the transmission conductor.
Fig. 6 is a schematic view showing a division of a load bearing part according to an example of the present disclosure.
In some examples, as described above, the transmission 20 may also include a carrier 230. In some examples, the carrier 230 may be elongated. For example, the bearing part 230 may have a substantially cylindrical shape having an opening or a groove, in which one end is formed as a spherical surface and the other end is formed with a protrusion 2310a (see fig. 5). In some examples, the bearing part 230 may also be formed by a combination of various columnar structures, and an opening or a groove may be formed at a side surface of the bearing part 230.
In some examples, the maximum width of the carrier 230 in the radial direction may be no greater than the inner diameter of the catheter lumen 11. In this case, the movement of the actuator 20 within the catheter 10 can be facilitated. In some examples, the carrier portion 230 may be connected with the transition portion 220. In some examples, the axial direction of the bearing 230 may be the same as the axial direction of the drive shaft 210.
In some examples, the carrier 230 may include a coupling portion 2310 and a support portion 2320. The coupling portion 2310 may be connected with the transition portion 220.
In some examples, the coupling portion 2310 may be a polyhedral structure. For example, as shown in fig. 5 and 6, the outer surface of the coupling portion 2310 may include a first surface 2311, a second surface 2312, and a third surface 2313. Here, the second surface 2312 may be located between the first surface 2311 and the third surface 2313, and may be respectively in close connection with the first surface 2311 and the third surface 2313 to form an outer surface of the coupling portion 2310.
In some examples, coupling portion 2310 may be substantially cylindrical. In this case, the first surface 2311 and the third surface 2313 may be located at opposite sides of the coupling portion 2310 (see fig. 6). The second surface 2312 may be disposed between the first surface 2311 and the third surface 2313, and may be respectively connected with the first surface 2311 and the third surface 2313 to make the coupling portion 2310 substantially form a cylindrical structure.
In some examples, the first surface 2311 may be generally along a radial direction of the carrier 230. For example, as shown in fig. 6, the first surface 2311 may be planar. In some examples, the first surface 2311 may be parallel to a radial direction of the bearing 230.
In some examples, the first surface 2311 may be comprised of a plurality of sub-surfaces. Wherein the plurality of sub-surfaces may form a first surface 2311 in a coplanar manner; the plurality of sub-surfaces may also form the first surface 2311 not completely coplanar. In some examples, the first surface 2311 (or sub-surfaces) may be at an angle to the radial direction of the carrier 230.
In some examples, as described above, the outer surface of coupling portion 2310 may include second surface 2312 (see fig. 6). In some examples, the second surface 2312 may be a curved surface that generally approximates a side of a cylinder. In some examples, the generatrix direction of the second surface 2312 may be generally along the axial direction of the carrier 230. In some examples, the second surface 2312 may also be comprised of a plurality of sub-surfaces. In some examples, the plurality of sub-surfaces may be one or more shapes and combine to form the second surface 2312.
In some examples, as described above, the outer surface of coupling portion 2310 may include third surface 2313. In some examples, the third surface 2313 is further from the transition 220 than the first surface 2311.
In some examples, the third surface 2313 is generally along a radial direction of the carrier 230. In some examples, the third surface 2313 may be parallel to a radial direction of the carrier 230. In other examples, the third surface 2313 may be at an angle to a radial direction of the carrier 230.
In some examples, third surface 2313 may be comprised of a plurality of sub-surfaces. Wherein the plurality of sub-surfaces can be coplanar to form a third surface 2313. For example, the third face 2313 may include a third sub-face 2313a and a third sub-face 2313b. The third sub-surface 2313a may be coplanar with the third sub-surface 2313b. The third surface 2313 may be parallel to or at an angle with respect to the radial direction of the carrier 230.
In other examples, the plurality of sub-surfaces may not be completely coplanar to form the third surface 2313. For example, as shown in fig. 5 and 6, the third sub-surface 2313a may not be coplanar with the third sub-surface 2313b. For example, in some examples, the third sub-surface 2313a may be at an angle to the radial direction of the carrier 230, and the third sub-surface 2313b may be parallel to the radial direction of the carrier 230.
In the example according to the present embodiment, as described above, the first surface 2311, the second surface 2312, and the third surface 2313 may be closed to form the outer surface of the coupling portion 2310. A third surface 2313 of the outer surface of the coupling portion 2310 may be an end surface of the coupling portion 2310 remote from the transition portion 220. The third surface 2313 may include a third sub-surface 2313a and a third sub-surface 2313b. The third sub-surface 2313a may be at an angle to the radial direction of the carrier 230. The third sub-surface 2313b may be parallel to the radial direction of the carrier 230 (see fig. 6).
In some examples, the maximum outer diameter of coupling 2310 in the radial direction may be no greater than the outer diameter of transition 220. In some examples, a maximum outer diameter of coupling portion 2310 in the radial direction may be the same as an outer diameter of transition portion 220. That is, the second surface 2312 of the coupling portion 2310 may be coplanar with a side surface of the transition portion 220. However, examples of the present disclosure are not limited thereto, and the maximum outer diameter of the coupling portion 2310 in the radial direction may also be greater than the outer diameter of the transition portion 220.
In some examples, the coupling portion 2310 may have a lead hole 2314 (see fig. 3 to 5) provided in the axial direction and penetrating the coupling portion 2310. In some examples, the lead holes 2314 may be circular arc holes. But examples of the present disclosure are not limited thereto, and the lead hole 2314 may also have other shapes. For example, the lead holes 2314 may be circular holes. In other examples, the lead holes 2314 may be non-closed shapes. For example, the lead hole 2314 may be provided on a sidewall of the coupling portion 2310. In some examples, the wire holes 2314 may be no smaller in size than the transmission wires.
In some examples, the lead holes 2314 may communicate with the through holes 221 of the transition portion 220 (see fig. 2 to 4). In this case, the transmission wire may be disposed along the lead hole 2314, the through hole 221 of the transition part 220, and the inner cavity of the transmission shaft 210, and may connect the ultrasonic transducer 30 and the extracorporeal device.
But examples of the present disclosure are not limited thereto, and in some examples, the transmission wire may also be disposed along a sidewall of the coupling portion 2310. For example, transmission wires may be arranged along the side wall of the coupling portion 2310, may enter the through hole 221 from an opening in the transition portion 220 connected with the through hole 221, and may extend along the inner cavity of the transmission shaft 210 to outside the body to be connected with an extracorporeal device.
In some examples, coupling 2310 may be partially embedded in transition 220 (see fig. 3). In some examples, the coupling portion 2310 may form a protrusion 2310a (see fig. 5 and 6) along an axial direction of the coupling portion 2310 at the first surface 2311, and the protrusion 2310a may have a shape matching the through hole 221 of the transition portion 220 and may be inserted into the through hole 221 of the transition portion 220. For example, the outer periphery of the protrusion 2310a may have a protrusion 2130b that matches the snap hole 222 of the transition portion 220.
In some examples, the carrier 230 may also include a support 2320. The support 2320 may be used to place and secure the ultrasound transducer 30.
In some examples, the support 2320 may be elongated. In some examples, as shown in fig. 6, the outer surface of the support 2320 may include a fourth surface 2321, a fifth surface 2322, a sixth surface 2323, and a seventh surface 2324. The fifth surface 2322 and the sixth surface 2323 may be located between the fourth surface 2321 and the seventh surface 2324, and may be respectively connected to the fourth surface 2321 and the seventh surface 2324 in a closed manner to form an outer surface of the supporting portion 2320.
Specifically, the fourth surface 2321 and the seventh surface 2324 may be located at opposite sides of the support 2320 (see fig. 6). Fifth surface 2322 and sixth surface 2323 may be located between fourth surface 2321 and seventh surface 2324, and may be connected with fourth surface 2321 and seventh surface 2324, respectively. The fifth surface 2322 may be connected to the sixth surface 2323 to form a substantially annular curved surface. In this case, the fourth surface 2321, the fifth surface 2322, the sixth surface 2323 and the seventh surface 2324 may be closed-connected to form an outer surface of the supporting part 2320 having a substantially cylindrical structure.
In some examples, the support 2320 may be connected with the coupling 2310. In some examples, fourth surface 2321 can be conformed to third surface 2313. For example, the shape and size of the fourth sub-surface 2321 and the third sub-surface 2313b may be identical. That is, when the fourth surface 2321 is conformed to the third surface 2313, the fourth surface 2321 may be completely coincident with the third sub-surface 2313b (see fig. 4-6). In addition, in some examples, when the fourth surface 2321 is fitted to the third surface 2313, the axial direction of the coupling portion 2310 and the axial direction of the support portion 2320 may be the same.
In some examples, the fifth surface 2322 may intersect the fourth surface 2321 at a line segment L 2 (see fig. 6). In some examples, fifth surface 2322 may be configured to conform to fourth surface 2321 and third surface 2313To intersect with the third surface 2313 at line segment L 12 (see fig. 5). In some examples, line segment L 12 May be perpendicular to the axial direction of the bearing part 230. In some examples, line segment L 12 Can correspond to the line segment L on the third surface 2313 1 The line segment L on the fifth surface 2322 may also be mapped to 2 (see fig. 5 and 6). In some examples, line segment L 1 May be connected with the line segment L 2 May be equal. For example, when the fourth surface 2321 is conformed to the third surface 2313, the fourth surface 2321 may be completely coincident with the third sub-surface 2313b. Examples of the disclosure are not limited thereto, and in some examples, the line segment L 1 May also be less than line segment L 2 . In other examples, line segment L 1 May also be longer than the line segment L 2 。
In some examples, the fifth surface 2322 may be along an axial direction of the carrier 230. In some examples, fifth surface 2322 may include a bearing surface. The support surface may be used to place and secure an ultrasound transducer 30 (described later). In some examples, the support surface may have a predetermined angle with an axial direction of the bearing 230. In some examples, the preset angle may be 3 to 20 °. For example, the preset angle may be 5 °, 8 °, 10 °, 12 °, 15 °, 17 °, 19 °, or the like. Thereby, the ultrasonic transducer 30 can be tilted at a preset angle. In some examples, a side of the support surface proximate to the third surface 2313 may be lower than a side of the support surface distal from the third surface 2313 in a direction of the straight line H. Wherein the straight line H may be along the radial direction of the bearing part 230 and with the line segment L 12 Vertically (see fig. 5). In this case, the ultrasonic transducer 30 can be inclined with respect to the axial direction of the carrier part 230.
In some examples, an edge of the fifth surface 2322 in the axial direction of the carrier 230 may be provided with a protrusion. For example, two positions where the sixth surface 2323 and the fifth surface 2322 are connected may be respectively formed with two protrusions protruding from the fifth surface 2322. The distance between the tops of the two protrusions may be no greater than L 2 And the distance between the bottoms of the two protrusions may be no greater than the distance between the tops of the two protrusions.
In some examples, when the fourth surface 2321 is fitted to the third surface 2313, the third surface 2313 may be inclined at an angle with respect to the radial direction of the carrier 220 in a direction along the straight line H and from the sixth surface 2323 toward the fifth surface 2322. For example, in some examples, when the fourth surface 2321 is conformed to the third surface 2313, the third sub-surface 2313a may be inclined at an angle with respect to the radial direction of the carrier 220, i.e., at an angle α (see fig. 5) with respect to the straight line H. In some examples, the magnitude of α may be determined based on the actual conditions of the ultrasound transducer 30. In this case, when the ultrasonic transducer 30 is emitting an ultrasonic sound beam, the propagation influence of the coupling portion 2310 on the ultrasonic sound beam can be reduced. In some examples, the third sub-surface 2313a may be inclined outwardly relative to the fifth surface 2322. That is, the third sub-surface 2313a may be defined by the line segment L 12 Initially at an angle to the straight line H and inclined away from the fifth surface 2322.
In some examples, the fifth surface 2322 may include a plurality of sub-surfaces. In some examples, the plurality of sub-surfaces may be coplanar to form the fifth surface 2322. For example, the fifth surface 2322 may be planar. The fifth surface 2322 may have a preset angle with the axial direction of the carrier 230. In this case, the fifth surface 2322 may serve as a support surface (see fig. 7). In some examples, the plurality of sub-surfaces may not be completely coplanar to form the fifth surface 2322. Several sub-surfaces may be coplanar to form a plane, and the plane may have a predetermined angle with the axial direction of the bearing part 230. In this case, the plane may serve as a support surface.
In some examples, the location of the support surface may match the location of the wire holes 2314. Thus, the ultrasonic transducer 30 placed on the supporting surface can be better connected with the transmission wire. In some examples, the lowest position of the support face may not be lower than the bottom of the lead hole 2314 in the direction of the straight line H. For example, as shown in fig. 5, the lowest position of the support surface (i.e., where the fifth surface 2322 may intersect the third surface 2313) may not be lower than the bottom of the wire hole 2314. In other examples, the lowest position of the support surface may be lower than the bottom of the wire hole 2314.
In some examples, the corners of the carrier 230 near the wire holes 2314 may be rounded transitions. Thereby better protecting the wire. For example, as shown in fig. 5, a corner portion G near the lead hole 2314 may be rounded.
In some examples, as described above, the outer surface of support 2320 may include sixth surface 2323. In some examples, the sixth surface 2323 may include a plurality of sub-surfaces. In some examples, the plurality of sub-surfaces may be coplanar to form sixth surface 2323. For example, the sixth surface 2323 may be a curved surface that approximates a side of a cylinder. In other examples, the plurality of sub-surfaces may not be completely coplanar to form the sixth surface 2323.
In some examples, the sixth surface 2323 can be coplanar with the second surface 2312 when the fourth surface 2321 is conformed to the third surface 2313. For example, as shown in fig. 5, sixth surface 2323 may be co-curved with second surface 2312.
However, examples of the present disclosure are not limited thereto, and in some examples, the sixth surface 2323 may have a positional relationship with the second surface 2312 such that L is in a direction of the straight line H and toward the sixth surface 2323 (generally corresponding to a vertically downward direction in fig. 6), L 12 The maximum distance from the sixth surface 2323 may be greater than the maximum distance from the second surface 2312. In other examples, sixth surface 2323 and second surface 2312 may have a positional relationship therebetween that is along straight line H and in a direction toward sixth surface 2323, L 12 The maximum distance from the sixth surface 2323 may be smaller than the maximum distance from the second surface 2312.
In some examples, the outer surface of the support 2320 may also include a seventh surface 2324. The seventh surface 2324 may be along a radial direction of the carrier 230. In some examples, seventh surface 2324 may be further away from third surface 2313 than fourth surface 2321.
In some examples, seventh surface 2324 may be one plane. However, examples of the disclosure are not limited thereto, and in other examples, seventh surface 2324 may be formed by a combination of a plurality of sub-surfaces that are not completely coplanar.
In some examples, if the seventh surface 2324 is a plane, the seventh surface 2324 may be parallel to the radial direction of the bearing part 230 (refer to fig. 5 and 6). In other examples, the seventh surface 2324 may also be at an angle with respect to the radial direction of the carrier 230.
In some examples, the carrier 230 can also include a guide 2330. In some examples, the guide 2330 may be connected with the support 2320. In some examples, the guide 2330 may be disposed at an end of the support 2320 distal from the transition 220 (e.g., the guide 2330 may be connected with the seventh surface 2324).
In some examples, the guide 2330 can be substantially cylindrical. In some examples, as shown in fig. 6, the outer surface of guide 2330 may include an eighth surface 2331, a ninth surface 2332, and a tenth surface 2333. Ninth surface 2332 may be located between eighth surface 2331 and tenth surface 2333 and may be respectively connected to eighth surface 2331 and tenth surface 2333 in a closing manner to form an outer surface of guide 2330.
Specifically, the eighth surface 2331 and the tenth surface 2333 may be located on opposite sides of the support 2320 (see fig. 6). The ninth surface 2332 may be located between the fourth surface 2321 and the seventh surface 2324, and may be respectively connected to the eighth surface 2331 and the tenth surface 2333 in a closed manner to form an outer surface of the supporting part 2320 having a substantially cylindrical structure.
In some examples, the eighth surface 2331 is generally along a radial direction of the carrier 230. In some examples, the eighth surface 2331 may be parallel to the radial direction of the carrier 230 (see fig. 6). In other examples, the eighth surface 2331 may also be angled from the radial direction of the carrier 230.
In some examples, the eighth surface 2331 can be comprised of a plurality of sub-surfaces. The plurality of sub-surfaces may be coplanar to form the eighth surface 2331. For example, the eighth surface 2331 can include an eighth sub-surface 2331a and an eighth sub-surface 2331b. The eighth sub-surface 2331a may be coplanar with the eighth sub-surface 2331b. The eighth surface 2331 may be disposed parallel to or at an angle to the radial direction of the carrier 230.
In other examples, the plurality of sub-surfaces may not be completely coplanar to form the eighth surface 2331. For example, as shown in fig. 5 and 6, the eighth sub-surface 2331a may not be coplanar with the eighth sub-surface 2331b. For example, in some examples, the eighth sub-surface 2331a may be at an angle to the radial direction of the carrier 230 and the eighth sub-surface 2331b may be parallel to the radial direction of the carrier 230.
In some examples, eighth surface 2331 can be contoured to conform to seventh surface 2324. For example, as shown in fig. 5 and 6, the eighth sub-surface 2331b may be identical in shape and size to the seventh surface 2324. When the eighth surface 2331 is mated with the seventh surface 2324, the eighth sub-surface 2331b may be fully coincident with the seventh surface 2324. In addition, in some examples, when the eighth surface 2331 is conformed to the seventh surface 2324, the axial direction of the guide 2330 and the axial direction of the support 2320 may be the same.
In some examples, eighth surface 2331 may intersect fifth surface 2322 at line segment L when eighth surface 2331 is mated with seventh surface 2324 34 (see fig. 5). In some examples, line segment L 34 May be perpendicular to the axial direction of the bearing part 230. In some examples, line segment L 34 May correspond to the line segment L on the fifth surface 2322 3 And may correspond to the line segment L on the eighth surface 2331 4 (see fig. 5 and 6). In some examples, line segment L 3 Can be connected with the line segment L 2 Parallel. In some examples, line segment L 3 Can be connected with the line segment L 4 May be equal. For example, when the eighth surface 2331 is conformed to the seventh surface 2324, the eighth sub-surface 2331b may be completely coincident with the seventh surface 2324. Examples of the disclosure are not limited thereto, and in some examples, the line segment L 3 May also be less than the line segment L 4 . In other examples, line segment L 3 May also be longer than the line segment L 4 。
In some examples, when eighth surface 2331 is engaged with seventh surface 2324 along line M and by sixth surface 2323In a direction toward the fifth surface 2322, the eighth surface 2331 may be inclined at an angle with respect to a radial direction of the carrier 220. For example, in some examples, when the eighth surface 2331 is engaged with the seventh surface 2324, the eighth sub-surface 2331a may be inclined at an angle with respect to the radial direction of the carrier 220, i.e., at an angle β with respect to the straight line M (see fig. 5). In some examples, the magnitude of β may be determined based on the actual conditions of the ultrasound transducer 30. In this case, when the ultrasonic transducer 30 is emitting an ultrasonic beam, the propagation influence of the guide 2330 on the ultrasonic beam can be reduced. In some examples, the eighth sub-surface 2331a may be inclined outwardly relative to the fifth surface 2322. That is, the eighth sub-surface 2331a may be defined by line segment L 34 Initially at an angle to the line M and inclined away from the fifth surface 2322.
In some examples, guide 2330 may also include ninth surface 2332. In some examples, the ninth surface 2332 can include a plurality of sub-surfaces. In some examples, the plurality of sub-surfaces can be coplanar to form the ninth surface 2332. For example, the ninth surface 2332 may be a curved surface that approximates a side of a cylinder. In other examples, the plurality of sub-surfaces may not be completely coplanar to form the ninth surface 2332.
In some examples, ninth surface 2332 may be coplanar with sixth surface 2323 when eighth surface 2331 is conformed to seventh surface 2324. For example, as shown in fig. 5, ninth surface 2332 may be co-curved with sixth surface 2323.
However, the examples of the disclosure are not limited thereto, and in some examples, the ninth surface 2332 and the sixth surface 2323 may have a positional relationship in which the line segment L is in the direction of the straight line M and toward the sixth surface 2323 34 The maximum distance from ninth surface 2332 may be greater than the maximum distance from sixth surface 2323. Wherein the straight line M may be along the radial direction of the bearing part 230 and the line segment L 34 Vertically (see fig. 5). In other examples, ninth surface 2332 may have a positional relationship with sixth surface 2323 such that line segment L is in a direction of line M and toward sixth surface 2323 34 The maximum distance from ninth surface 2332 may be less than the maximum distance from sixth surface 2323.
In some examples, ninth surface 2332 may also be coplanar with second surface 2312 when eighth surface 2331 is conformed to seventh surface 2324.
In some examples, guide 2330 may also include tenth surface 2333. In some examples, tenth surface 2333 may be along a radial direction of carrier 230. In some examples, tenth surface 2333 may be farther away from seventh surface 2324 than eighth surface 2331.
In some examples, tenth surface 2333 may be a plane. In some examples, tenth surface 2333 may be parallel to the radial direction of carrier 230. Examples of the present disclosure are not limited thereto, and in some examples, the tenth surface 2333 may be formed as one spherical surface (see fig. 6). In this case, the transmission 20 can be made to work better. In other examples, the tenth surface 2333 may also be formed by a combination of a plurality of sub-surfaces that are not completely coplanar.
It should be noted that, in the example according to the present disclosure, the third sub-surface 2313b and the fourth sub-surface 2321 are not absolute, and are only for illustrative purposes in the drawings. The eighth sub-surface 2331b and the seventh surface 2324 are not absolute and are shown for illustrative purposes only.
In some examples, the carrier 230 may be integrally formed, as described above. That is, the coupling portion 2310, the support portion 2320 and the guide portion 2330 may be integrally formed. For example, both ends of the support 2320 are connected to the coupling portions 2310 and the guide portions 2330, respectively, and are integrally molded (see fig. 5). In some examples, the load bearing portion 230 may be partially embedded in the transition portion 220, as described above. The portion of the carrier 230 that is not embedded in the transition 220 may be formed as a columnar structure with an opening or recess.
In some examples, the carrier 230 may be formed via injection molding. In some examples, the carrier 230 may be formed in one piece. This can improve the manufacturing efficiency of the transmission 20. In some examples, the carrier 230 may be made of a hydrophilic material. In some examples, the carrier 230 may also be made of a material that is acoustically opaque. In some examples, the surface of the carrier 230 may be coated with a hydrophilic coating or its hydrophilic properties may be increased by plasma surface modification or the like.
Fig. 7 is a schematic diagram showing an application of the ultrasonic transducer 30 according to the example of the present disclosure to the carrier part 230.
In some examples, the ultrasonic transducer 30 may be placed and fixed on a support surface (e.g., the fifth surface 2322 in fig. 7) of the carrier 230. In some examples, the ultrasound transducer 30 may be secured by adhesive (e.g., glue dispensed at the bottom of the ultrasound transducer 30). In some examples, when the ultrasonic transducer 30 is fixed on the supporting surface, the ultrasonic transducer 30 may also be inclined at a certain angle (e.g., a preset angle) along the supporting surface of the carrier part 230.
In some examples, when the ultrasound transducer 30 is secured to a support surface, transmission wires (see fig. 7) connected to the ultrasound transducer 30 may enter through the wire holes 2314 and be disposed in the interior cavity of the drive shaft 210.
In some examples, the size and depth of the support surface may match the profile of the ultrasound transducer 30 when the ultrasound transducer 30 is secured to the support surface. In some examples, when ultrasound transducer 30 is secured to a support surface, ultrasound transducer 30 may not protrude from carrier 230. I.e. in the direction of line H and from the support surface towards the ultrasound transducer 30, the maximum height of the ultrasound transducer 30 may be lower than the maximum height of the carrier part 230; in a straight line L 12 In the direction of (a), the length of the ultrasonic transducer 30 may be smaller than the outer diameter of the carrier 230; at a line L 12 In the vertical axial direction of the carrier 230, the length of the ultrasonic transducer 30 may not be greater than the length of the support 2320. For example, the carrier 230 may be cylindrical with a recess, when the ultrasonic transducer 30 is fixed on the supporting surface, that is, the ultrasonic transducer 30 is fixed in the recess, the length and the width of the ultrasonic transducer 30 may be respectively smaller than those of the recess at the corresponding position, the thickness of the ultrasonic transducer 30 may not be greater than the depth of the recess, and the ultrasonic transducer 30 may not exceed the circle corresponding to the carrier 230The sides of the post, i.e., the ultrasonic transducers, may not protrude from the carrier 230. In this case, when the actuator 20 is in operation, the ultrasonic transducer 30 can be prevented from directly contacting the inner wall of the catheter 10 during movement, and the possibility of damage to the ultrasonic transducer 30 can be effectively reduced.
In some examples, the transmission 20 may also have a filtering structure (not shown) for filtering air bubbles. In some examples, the filtering structure may be disposed proximate to a connection of the carrier portion 230 and the transition portion 220. For example, the filtering structure may be disposed at the periphery of the carrier 230 proximate the connection of the carrier 230 with the transition 220. Still alternatively, the filtering structure may also be provided at the periphery of the transition portion 220 near the connection of the carrier portion 230 and the transition portion 220. In this case, the bubbles can be filtered to make it difficult for the bubbles to enter the imaging region, whereby a better imaging effect can be obtained.
In some examples, the filtering structure may be an annular structure disposed at an outer periphery of the carrier portion 230 or the transition portion 220. In some examples, the filter structure may have a gap for placing a filter membrane capable of filtering air bubbles. However, examples of the present disclosure are not limited thereto, and the filter structure may be other structures capable of filtering bubbles. For example, the filtering structure may be an annular structure disposed about the periphery of the carrier portion 230 or the transition portion 220. The ring structure may have a plurality of through holes provided along the axial direction of the carrier 230.
In some examples, the outer diameter of the filter structure may be no greater than the inner diameter of the catheter lumen 11 of the catheter 10.
In some examples, transmission 20 may also have a shock absorbing structure 2334 (see fig. 7). In some examples, the shock absorbing structure 2334 may be disposed at the periphery of the guide 2330. In some examples, the shock absorbing structure 2334 may be a ball (not shown) or a ring (see fig. 7) or the like disposed at the outer circumference of the guide 2330. In this case, when the actuator 20 is operated, the vibration of the ultrasonic transducer 30 can be reduced, and the ultrasonic transducer 30 can be made to operate better. For example, a protrusion having a ring shape may be provided on the outer circumference of the guide 2330 (see fig. 7). In some examples, shock absorbing structures 2334 may be integrally formed with guides 2330. In some examples, the outer diameter of shock absorbing structure 2334 can match the inner diameter of catheter 10. For example, in some examples, the outer diameter of shock absorbing structure 2334 can be no greater than the inner diameter of catheter 10.
In some examples, shock absorbing structure 2334 may be made of a smoother material.
In the example according to the present embodiment, as described above, the transmission device 20 may include the carrier portion 230, the transition portion 220, and the transmission shaft 210. The carrier 230 may include the coupling portion 2310, the support portion 2320, and the guide portion 2330, which are integrally formed. The support 2320 may have a support surface for placing and fixing the ultrasonic transducer 30, and the support surface may be at a predetermined angle to tilt the ultrasonic transducer 30. The drive shaft 210 may be connected to the carrier 230 by a transition 220. In this case, the ultrasonic transducer 30 can be fixed relatively easily, and adverse effects on the ultrasonic transducer 30 during the fixing process can be reduced.
A method for manufacturing the actuator 20 of the ultrasonic transducer 30 according to the example of the present embodiment will be described in detail below with reference to the drawings. Fig. 8 shows a flow diagram of a method of manufacturing the actuator 20 of the ultrasonic transducer 30 according to an example of the present disclosure.
The method of manufacturing the transmission 20 according to the example of the present embodiment may include the steps of: the transition portion 220 may be prepared, and the bearing portion 230 connected to the transition portion 220 may be formed by injection molding (step S10); the ultrasonic transducer 30 may be fixed to the supporting surface of the carrier 220 (step S20); the transmission shaft 210 may be connected with the transition portion 220 and the lead wire may be connected with the ultrasonic transducer 30 via the lead hole 2314 (step S30).
In the example according to the present embodiment, the transition portion 220 may be prepared, the carrier portion 230 connected to the transition portion 220 may be formed by an injection molding process, and the ultrasonic transducer 30 may be fixed to the support surface of the carrier portion 220. The drive shaft 210 may be connected with the carrier 230 through the transition 220, and the wire is connected with the ultrasonic transducer 30 through the wire hole 2314. Thereby, the actuator 20 capable of easily fixing the ultrasonic transducer 30 can be obtained.
In the present embodiment, the forming materials, structures, arrangement manners, and the like of the carrier part 230, the transition part 220, the transmission shaft 210, the ultrasonic transducer 30, and the wire in the manufacturing method of the transmission device 20 may refer to the above-mentioned description of the carrier part 230, the transition part 220, the transmission shaft 210, the ultrasonic transducer 30, and the wire.
In step S10, as described above, the transition part 220 may be prepared, and the bearing part 230 connected to the transition part 220 may be formed by injection molding.
In some examples, an annular transition 220 may be prepared. In some examples, the carrier 230 may be formed by an injection molding process. In some examples, the carrier 230 may be injection molded from a hydrophilic material. In this case, the liquid can be assisted to flow more distally, and the influence of bubbles can be reduced.
In some examples, the carrier portion 230 may be connected with the transition portion 220. In some examples, the load bearing portion 230 may be partially embedded in the transition portion 220 and secured. For example, the transition portion 220 may be previously disposed in an injection mold of the carrier portion 230. In this case, the carrier part 230 can be partially embedded in the transition part 220 during the injection molding process. In some examples, the carrier 230 may be formed in one piece. In some examples, the carrier 230 may include a coupling portion 2310, a support portion 2320, and a guide portion 2330. The support 2320 may have a support surface for placing the ultrasonic transducer 30 (see fig. 7). In some examples, the support surface may be at a predetermined angle to the axial direction of the carrier 230. The specific implementation of step S10 can be referred to the above description of the bearing part 230 and the transition part 220.
In step S20, as described above, the ultrasonic transducer 30 may be fixed to the support surface of the carrier part 230. Specifically, the ultrasonic transducer 30 may be fixed to the support surface so that the ultrasonic transducer 30 is inclined at a predetermined angle with respect to the axial direction of the drive shaft 210. In some examples, the ultrasonic transducer 30 may be secured to the support surface by adhesive bonding. For example, the ultrasonic transducer 30 may be fixed in a form of a spot at the bottom of the ultrasonic transducer 30. In this case, the ultrasonic transducer 30 can be fixed relatively easily. In other examples, the ultrasonic transducer 30 may be secured to the support surface in other ways. The specific implementation of step S20 can be referred to the above description of the supporting surface and the ultrasonic transducer 30.
In step S30, as described above, the transmission shaft 210 may be connected with the transition portion 220, and the lead wire may be connected with the ultrasonic transducer 30 via the lead hole 2314.
In some examples, drive shaft 210 may be connected to transition 220 by welding. In some examples, wires connected to the ultrasonic transducer 30 may enter the internal cavity of the drive shaft 210 through a wire hole 2314 provided on the carrier part 230.
In some examples, the wires may be first inserted through the wire holes 2314 and disposed in the inner cavity of the transmission shaft 210, and then the transmission shaft 210 may be connected to the transition portion 220. In other examples, the transmission shaft 210 may be connected to the transition portion 220, and the conductive wire may be inserted through the wire hole 2314 and disposed in the inner cavity of the transmission shaft 210. The specific implementation of step S30 can refer to the above description of the transmission shaft 210 and the transition part 220.
While the present disclosure has been described in detail above with reference to the drawings and the embodiments, it should be understood that the above description does not limit the present disclosure in any way. Variations and changes may be made as necessary by those skilled in the art without departing from the true spirit and scope of the disclosure, which fall within the scope of the disclosure.
Claims (8)
1. An ultrasonic transducer actuator, comprising: the method comprises the following steps: a bearing part having a coupling part, a support part and a guide part which are integrally molded, the support part having a support surface for placing and fixing an ultrasonic transducer, the support surface having protrusions at both edges in an axial direction of the bearing part, respectively, the coupling part having a lead hole; a transition part connected with the coupling part, the bearing part being formed via injection molding, and the coupling part being at least partially embedded in and fixed with the transition part, the transition part being formed as a metal ring and the metal ring having a snap-fit hole, the coupling part being embedded in the snap-fit hole of the transition part; and a transmission shaft connected to the carrier part via the transition part and used for translating and rotating the carrier part, wherein a wire connected to the ultrasonic transducer is provided on the transmission shaft, and the wire is connected to the ultrasonic transducer via the wire hole, wherein the support surface and an axial direction of the transmission shaft have a preset angle to incline the ultrasonic transducer with respect to the axial direction of the transmission shaft, the preset angle is 3 to 20 °, such that a side of the support surface close to the coupling part is lower than a side of the support surface close to the guide part, a side of the guide part facing the support part inclines outward at a second preset angle with respect to a radial direction of the carrier part, and a side of the coupling part facing the support part inclines outward at a third preset angle with respect to the radial direction of the carrier part.
2. The transmission of claim 1, wherein:
the guide portion is provided with a ring or balls provided along the outer periphery of the guide portion.
3. The transmission of claim 1, wherein:
and a filtering structure for filtering bubbles is arranged at the periphery of the connecting part or the transition part.
4. The transmission of claim 1, wherein:
the inner diameter of the transition part is gradually reduced along with the distance from the connecting part.
5. The transmission of claim 1, wherein:
the bearing part is in fillet transition at a corner close to the lead hole.
6. A method of manufacturing a transmission device for an ultrasonic transducer, the transmission device including a carrier portion having a support surface for placing the ultrasonic transducer, a transition portion, and a transmission shaft connected to the carrier portion via the transition portion, characterized in that:
the method comprises the following steps:
preparing a transition part made of annular metal, forming a clamping hole on the transition part, and integrally forming a bearing part connected with the transition part through an injection molding process, wherein the bearing part is embedded into the clamping hole of the transition part; forming protrusions on two edges of the support surface along the axial direction of the bearing part respectively, and fixing the bearing part with the transition part by partially embedding the transition part in the injection molding process, wherein the bearing part is provided with a lead hole, the front part of the bearing part forms a side surface inclined outwards at a second preset angle relative to the radial direction of the bearing part towards the support surface, and the rear part of the bearing part forms a side surface inclined outwards at a third preset angle relative to the radial direction of the bearing part towards the support surface;
fixing the ultrasonic transducer on the supporting surface, wherein a preset angle is formed between the supporting surface and the axial direction of the transmission shaft and is 3-20 degrees, so that one side of the supporting surface close to the transition part is lower than one side of the supporting surface far away from the transition part; and is provided with
Welding the drive shaft to the transition and connecting a wire to the ultrasonic transducer via the lead hole.
7. The manufacturing method according to claim 6, characterized in that:
the bearing part is formed by injection molding of hydrophilic materials.
8. The manufacturing method according to claim 6, characterized in that:
the ultrasonic transducer is fixed on the supporting surface in an adhesion mode so that the ultrasonic transducer is inclined relative to the axial direction of the transmission shaft.
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| KR101863420B1 (en) * | 2015-12-02 | 2018-05-30 | 동국대학교 산학협력단 | The housing for intravascular ultrasound transducer |
| JP6962850B2 (en) * | 2018-03-30 | 2021-11-05 | テルモ株式会社 | Diagnostic imaging catheter |
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