Ultrasound imaging system and ultrasound imaging catheter assembly

Abstract

The present application relates to a kind of ultrasonic imaging system and ultrasonic imaging catheter assembly, ultrasonic imaging catheter assembly includes: imaging catheter, catheter socket and catheter terminal.Catheter terminal is equipped with electric connection part, and electric connection part is electrically connected with radio frequency terminal by plug-in manner.When assembling, imaging catheter and catheter socket are mutually plugged, and unlocking piece can drive first clamping part to open to loosen core;In addition, catheter terminal is inserted along the axial direction to make catheter terminal and core clamping connection, and electric connection part and radio frequency terminal in the core interior are electrically connected by plug-in manner.In addition, catheter terminal can drive core to retract along the axial direction and / or circumferential direction arbitrary angle self-rotation, can realize to obtain the image information of full range of intravascular wall.Relative to the assembly mode of prior art, overall structure is simpler, can improve work efficiency, while reducing production assembly cost, production assembly process is simple, production assembly process is stable, conducive to mass production.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasound imaging system and an ultrasound imaging catheter assembly. Background Technology

[0002] Intravascular ultrasound (IVUS) is a medical imaging technique that combines non-invasive ultrasound technology with invasive catheter technology, using an imaging catheter with an ultrasound probe attached to its end. IVUS inserts a miniaturized ultrasound transducer into the lumen of a blood vessel through an imaging catheter to display the cross-sectional morphology and / or blood flow patterns of the vessel. It mainly includes ultrasound imaging technology and Doppler flow measurement. Based on angiography, the blood vessel and lesion site to be examined are selected.

[0003] Traditionally, the installation of imaging catheters in ultrasound imaging systems typically involves a two-step assembly process. First, the outer sheath connector of the imaging catheter needs to be assembled and connected to the catheter socket. Second, the core of the imaging catheter needs to be assembled and connected to the catheter terminals. This assembly process is complex, inefficient, and costly. Summary of the Invention

[0004] This application provides an ultrasound imaging system and an ultrasound imaging catheter assembly to solve one or more technical problems in the prior art.

[0005] The technical solution is as follows: an ultrasound imaging catheter assembly, the ultrasound imaging catheter assembly comprising:

[0006] An imaging catheter, the imaging catheter including an outer sheath connector and a retaining device disposed inside the outer sheath connector;

[0007] The core is axially movable through the outer sheath connector, and the fastener is provided with at least two first holding parts that engage with the core;

[0008] A catheter socket is rotatably engaged with an outer sheath connector. The catheter socket includes a socket body and at least two unlocking members connected to the socket body. The socket body has an axial channel that avoids the core. The unlocking members are correspondingly disposed with the first locking portion. When the catheter socket rotates in a first direction, the unlocking member abuts against the first locking portion, and the first locking portion disengages from the core. When the catheter socket rotates in a second direction, the unlocking member disengages from the first locking portion, and the first locking portion engages with the core under a self-recovering force. The first direction is opposite to the second direction.

[0009] In one embodiment, the unlocking element is a push post, push block, or push rod extending axially; and / or, all the first holding portions are arranged sequentially at intervals around the circumference of the outer sheath connector, and all the unlocking elements are arranged sequentially at intervals around the circumference of the socket body.

[0010] In one embodiment, the outer wall of the core is provided with an axial limiting boss for abutting and engaging with the first retaining part; and / or, the outer wall of the core is provided with at least one limiting recess, and the first retaining part is correspondingly engaged in the limiting recess.

[0011] In one embodiment, the diameter of the cavity surrounded by all the unlocking elements is the same as the outer diameter of the core; and / or, the unlocking element has an elastic portion that abuts against the core.

[0012] In one embodiment, the socket body is provided with at least one second retaining part, and the outer sheath connector is provided with at least one third retaining part, wherein the second retaining part and the third retaining part correspond to each other and engage with each other.

[0013] In one embodiment, the outer wall of the outer sheath connector is provided with a sliding groove corresponding to the second retaining part. The sliding groove includes a first groove segment and a second groove segment that are connected to each other. The first groove segment extends axially along the outer sheath connector and extends to the end face of the outer sheath connector facing the catheter socket. The second groove segment extends circumferentially along the outer sheath connector and extends to the third retaining part.

[0014] In one embodiment, the fastener includes a seat that snaps onto the inner wall of the outer sheath connector, and the first retaining portion is connected to the seat.

[0015] In one embodiment, the seat body is provided with at least one fourth retaining portion, and the outer sheath connector is provided with a fifth retaining portion that is engaged with the fourth retaining portion; and / or, the outer wall of the seat body is provided with at least one first guide portion that extends axially, and the inner wall of the outer sheath connector is provided with a second guide portion that slides with the first guide portion.

[0016] In one embodiment, the core is provided with a radio frequency terminal; the ultrasound imaging catheter assembly further includes a catheter terminal, which is detachably snap-fitted to the core, and the catheter terminal is provided with an electrical connection portion, which is electrically connected to the radio frequency terminal by a plug-in manner.

[0017] In one embodiment, the ultrasound imaging catheter assembly further includes an electronic tag disposed on the outer sheath connector and a reading device disposed on the catheter socket.

[0018] An ultrasound imaging system, the ultrasound imaging system comprising the aforementioned ultrasound imaging catheter assembly.

[0019] In the aforementioned ultrasound imaging system and ultrasound imaging catheter assembly, during the assembly of the imaging catheter and catheter socket, the outer sheath connector and catheter socket are interlocked and rotated. The unlocking mechanism correspondingly drives the first holding part to open and release the core. Because the first holding part releases the core, the socket body has an axial channel that avoids the core, allowing the core to retract axially and / or rotate at any angle in the circumferential direction, thus enabling the acquisition of omnidirectional image information of the blood vessel wall. Compared to existing assembly methods, the overall structure is simpler, improving work efficiency and reducing production assembly costs. The production assembly process is simple and stable, facilitating mass production. Furthermore, before assembling the imaging catheter and catheter socket, the first holding part secures the core, preventing accidental removal of the core from the outer sheath connector, ensuring safety and effectiveness. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an ultrasound imaging catheter assembly according to an embodiment of this application;

[0023] Figure 2 for Figure 1 Another perspective view of the imaging conduit in the structure shown;

[0024] Figure 3 for Figure 2 A schematic diagram of the exploded structure shown;

[0025] Figure 4 This is a schematic diagram of the structure of the first holding part of the card firmware according to an embodiment of this application being fixed to the core;

[0026] Figure 5 This is a schematic diagram of the structural components of the card firmware, core, and conduit socket that cooperate with each other according to an embodiment of this application.

[0027] 10. Imaging catheter; 11. Outer sheath connector; 111. Third retaining part; 112. First groove segment; 113. Second groove segment; 114. Fifth retaining part; 1141. Retaining hole; 1142. Groove; 115. Second guide part; 116. Mounting hole; 12. Fastener; 121. First retaining part; 122. Seat; 1221. Fourth retaining part; 1222. First guide part; 13. Core; 131. RF terminal; 132, axial limiting boss; 133, limiting recess; 134, split shell; 135, sixth holding part; 20, conduit socket; 21, socket body; 211, axial channel; 212, second holding part; 22, unlocking element; 221, first wall surface; 222, second wall surface; 223, third wall surface; 30, conduit terminal; 31, seventh holding part; 41, electronic tag; 42, reading device. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be noted that the proximal end refers to the end of the instrument or component that is closer to the operator, and the distal end refers to the end of the instrument or component that is farther away from the operator; the axial direction refers to the direction parallel to the line connecting the center of the distal end and the proximal end of the instrument or component, the radial direction refers to the direction perpendicular to the axial direction, and the circumferential direction refers to the direction around the axial direction.

[0030] See Figures 1 to 3 , Figure 1 A schematic diagram of the structure of an ultrasound imaging catheter assembly according to an embodiment of this application is shown. Figure 2 It shows Figure 1 Another perspective view of the imaging catheter in the structure shown. Figure 3 It shows Figure 2 A schematic diagram of the exploded structure shown. Figure 4 This diagram illustrates the structure of a first retaining part of a card firmware according to an embodiment of this application, which is fixed to the core. Figure 5This illustration shows a schematic diagram of a structural component comprising a locking device, a core, and a catheter socket, according to an embodiment of this application. An embodiment of this application provides an ultrasound imaging catheter assembly, comprising an imaging catheter 10, a core 13, a catheter socket 20, and catheter terminals 30. The imaging catheter 10 includes an outer sheath connector 11 and a locking device 12 connected inside the outer sheath connector 11. The core 13 is axially movably disposed within the outer sheath connector 11. The locking device 12 has at least two first holding portions 121 that engage with the core 13. Specifically, the core 13 has radio frequency terminals 131. The catheter socket 20 is rotatably engaged with the outer sheath connector 11, and the catheter socket 20 includes a socket body 21 and at least two unlocking elements 22 connected to the socket body 21. The socket body 21 has an axial channel 211 that avoids the core 13. The unlocking member 22 is correspondingly disposed with the first retaining part 121. When the conduit socket 20 rotates, the unlocking member 22 contacts or disengages from the first retaining part 121, causing the first retaining part 121 to disengage from or engage with the core 13. When the conduit socket 20 rotates in the first direction, the unlocking member 22 abuts against the first retaining part 121, and the first retaining part 121 disengages from the core 13. When the conduit socket 20 rotates in the second direction, the unlocking member 22 disengages from the first retaining part 121, and the first retaining part 121 engages with the core 13 under a self-restoring force. The first and second directions are opposite; for example, if the first direction is clockwise, the second direction is counterclockwise.

[0031] In the aforementioned ultrasound imaging catheter assembly, during the assembly of the imaging catheter 10 and the catheter socket 20, the outer sheath connector 11 and the catheter socket 20 are interlocked and rotated. The unlocking member 22 correspondingly drives the first holding part 121 to open and release the core 13. Because the first holding part 121 releases the core 13, the socket body 21 has an axial channel 211 that avoids the core 13. This allows the core 13 to retract axially and / or rotate at any angle in the circumferential direction, enabling the acquisition of omnidirectional image information of the vascular wall. Compared to related technologies, the overall structure is simpler, improving work efficiency and reducing production assembly costs. The production assembly process is simple and stable, facilitating mass production. Furthermore, before assembling the imaging catheter 10 and the catheter socket 20, the first holding part 121 securely engages the core 13, preventing accidental removal of the core 13 from the outer sheath connector 11, ensuring safety and effectiveness.

[0032] In one specific embodiment, the catheter terminal 30 is detachably snap-fitted to the core 13. The catheter terminal 30 is provided with an electrical connection portion (not shown in the figure), which is electrically connected to the radio frequency terminal 131 by plugging in. Optionally, one of the electrical connection portion and the radio frequency terminal 131 is a male connector and the other is a female connector, and the electrical connection is achieved by plugging in the male and female connectors. Thus, when assembling the imaging catheter 10 and the catheter socket 20, the catheter terminal 30 is also inserted axially to snap-fit ​​the catheter terminal 30 to the core 13, and the electrical connection portion is electrically connected to the radio frequency terminal 131 inside the core 13 by plugging in. With the catheter terminal 30 snap-fitted to the core 13, the catheter terminal 30 can drive the core 13 to retract axially and / or rotate at any angle in the circumferential direction, enabling the acquisition of omnidirectional image information of the blood vessel wall.

[0033] It should be noted that the "fastener 12" can be a part of the "outer sheath connector 11", that is, the "fastener 12" and the "other parts of the outer sheath connector 11" are integrally formed; or it can be a separate component that can be separated from the "other parts of the outer sheath connector 11", that is, the "fastener 12" can be manufactured independently and then combined with the "other parts of the outer sheath connector 11" to form a whole.

[0034] Optionally, the first holding part 121 may include, but is not limited to, various structural forms such as a claw, a buckle, a head, a pin, a holding block, a clamping arm, a strip, etc., which can be flexibly adjusted and set according to actual needs.

[0035] It should be noted that the number of unlocking components 22 is equal to the number of first retaining parts 121, so that under the drive of the unlocking components 22, each first retaining part 121 can release the core 13. After the core 13 is released by the retaining component 12, it can retract and / or rotate under the drive of the conduit terminal 30. In this embodiment, the number of unlocking components 22 is consistent with the number of first retaining parts 121. In actual operation, when the conduit socket 20 rotates in the first direction, the multiple unlocking components 22 correspond to the multiple first retaining parts 121 and abut synchronously, and the first retaining parts 121 disengage from the core 13; when the conduit socket 20 rotates in the second direction, the multiple unlocking components 22 disengage from the multiple first retaining parts 121 synchronously, and the first retaining parts 121 engage with the core 13 under self-recovery force.

[0036] Please see Figure 5 In one embodiment, the unlocking element 22 is a push post, push block, or push rod that extends axially.

[0037] Please see Figures 3 to 5The unlocking member 22 can be inserted into the imaging conduit 10 along the axis, and then drive the imaging conduit 10 and the conduit socket 20 to rotate relative to each other. During the rotation, it pushes open the first holding part 121 corresponding to it, so that the first holding part 121 opens and releases the core 13, while the first holding part 121 and the unlocking member 22 remain in contact.

[0038] Optionally, to facilitate pushing open the corresponding first latching part 121, the unlocking member 22 includes a first wall 221 facing the core 13, and a second wall 222 and a third wall 223 adjacent to the first wall 221. The second wall 222 and / or the third wall 223 are set at an acute angle to the first wall 221. Thus, the second wall 222 and / or the third wall 223 cooperate with the first wall 221 to form a sharp angle, which facilitates pushing open the first latching part 121.

[0039] Please see Figures 3 to 5 In one embodiment, all the first retaining portions 121 are arranged sequentially at intervals around the circumference of the outer sheath connector 11, and all the unlocking members 22 are arranged sequentially at intervals around the circumference of the socket body 21. Thus, all the first retaining portions 121 synchronously retain the core 13, achieving a secure fixation of the core 13. Correspondingly, all the unlocking members 22 can synchronously open and release the core 13 with their corresponding first retaining portions 121.

[0040] Please see Figures 3 to 5 In one embodiment, the outer wall of the core 13 is provided with an axial limiting boss 132 for abutting and engaging with the first holding part 121. Specifically, the axial limiting boss 132 is arranged circumferentially around the outer wall of the core 13. In this way, the axial limiting boss 132 prevents the core 13 from moving axially by abutting the first holding part 121.

[0041] Please see Figures 3 to 5 In one embodiment, at least one limiting recess 133 is provided on the outer wall of the core 13, and the first retaining portion 121 is correspondingly engaged in the limiting recess 133. Thus, when the conduit socket 20 rotates in the first direction, the unlocking member 22 abuts against the first retaining portion 121, and the first retaining portion 121 disengages from the core 13, that is, the first retaining portion 121 disengages from the limiting recess 133. When the conduit socket 20 rotates in the second direction, the unlocking member 22 disengages from the first retaining portion 121, and the first retaining portion 121 engages with the core 13 under self-restoring force, that is, when the first retaining portion 121 is correspondingly engaged in the limiting recess 133, the retaining member 12 can prevent the core 13 from rotating circumferentially. Furthermore, the limiting recess 133 provided on the outer wall of the core 13 facilitates the disengagement of the first retaining portion 121 from the core 13 when the unlocking member 22 abuts against it.

[0042] Furthermore, the end of the first retaining part 121 away from the conduit socket 20 is elastic, so that when the first retaining part 121 is disengaged from the unlocking member 22, the first retaining part can return to its initial state, that is, clamp the core.

[0043] In one embodiment, the diameter of the cavity surrounded by all the unlocking members 22 is the same as the outer diameter of the core 13; and / or, the unlocking member 22 has an elastic portion that abuts against the core 13. In this way, the unlocking member 22 can securely clamp and fix the core 13 before unlocking and releasing it.

[0044] Please see Figures 3 to 5 In one embodiment, when the unlocking member 22 drives the corresponding first holding part 121 to open and release the core 13, the catheter socket 20 and the outer sheath connector 11 are fixedly engaged. Thus, when the unlocking member 22 drives the corresponding first holding part 121 to open and release the core 13, the core 13 can retract and rotate. Simultaneously, because the outer sheath connector 11 is fixedly engaged with the catheter socket 20, the outer sheath connector 11 is securely attached to the catheter socket 20, improving the stability of the outer sheath connector 11 and preventing interference from the movement of the core 13.

[0045] Please see Figures 3 to 5 In one embodiment, the socket body 21 is provided with at least one second retaining portion 212, and the outer sheath connector 11 is provided with at least one third retaining portion 111. The second retaining portion 212 and the third retaining portion 111 correspond to each other and engage in a locking mechanism. In this way, the socket body 21 is fixedly connected to the outer sheath connector 11 by the interlocking of the second retaining portion 212 and the third retaining portion 111, which enables rapid assembly and provides a stable connection.

[0046] Please see Figures 3 to 5 In one embodiment, the second holding part 212 is, for example, a protrusion provided on the inner wall of the socket body 21, and the third holding part 111 is, for example, a slot or clamping block provided on the outer wall of the outer sheath connector 11; or, the second holding part 212 is, for example, a slot or clamping block provided on the socket body 21, and the third holding part 111 is, for example, a protrusion provided on the outer wall of the outer sheath connector 11.

[0047] Please see Figures 3 to 5In one embodiment, the outer wall of the outer sheath connector 11 is provided with a sliding groove corresponding to the second retaining part 212. The sliding groove includes a first groove segment 112 and a second groove segment 113 that are connected to each other. The first groove segment 112 extends axially along the outer sheath connector 11 and extends to the end face of the outer sheath connector 11 facing the catheter socket 20. The second groove segment 113 extends circumferentially along the outer sheath connector 11 and extends to the third retaining part 111. Thus, during the actual assembly process, while the catheter socket 20 and the imaging catheter 10 are inserted into each other, the second retaining part 212 smoothly enters the first groove 112 and moves along the first groove 112 to the second groove 113. It can be seen that the first groove 112 can play an axial guiding role and can also play a role in calibrating the positions of the catheter socket 20 and the imaging catheter 10 to prevent angular deflection. Then, when the second retaining part 212 moves to the second groove 113, it drives the imaging catheter 10 and the catheter socket 20 to rotate relative to each other. On the one hand, the unlocking part 22 can rotate and push open the first retaining part 121. On the other hand, the second retaining part 212 moves to the third retaining part 111 and is fixedly engaged with the third retaining part 111, so that the catheter socket 20 is fixedly engaged with the outer sheath connector 11.

[0048] Please see Figures 3 to 5 Optionally, after the core 13 is removed from the outer sheath connector 11 by the catheter terminal 30, when it is necessary to separate the outer sheath connector 11 from the catheter socket 20, the outer sheath connector 11 and the catheter socket 20 can be separated by rotating the catheter socket 20 in the opposite direction.

[0049] Please see Figures 3 to 5 In one embodiment, multiple second retaining portions 212 and multiple third retaining portions 111 are provided, with the second retaining portions 212 and the third retaining portions 111 corresponding to each other. In this way, by having multiple third retaining portions 111 respectively engage and fix with multiple second retaining portions 212, the catheter socket 20 can be stably fixed to the outer sheath connector 11.

[0050] Please see Figure 3 In one embodiment, the fastener 12 includes a seat 122 that snaps onto the inner wall of the outer sheath connector 11, and a first retaining portion 121 connected to the seat 122. Thus, the fastener 12 and the outer sheath connector 11 are manufactured separately during production and then assembled together by snapping, which facilitates processing, increases assembly efficiency, and is suitable for mass production.

[0051] Please see Figure 2 and Figure 3 In one embodiment, the base 122 is provided with at least one fourth holding part 1221, and the outer sheath connector 11 is provided with a fifth holding part 114 that is engaged with the fourth holding part 1221.

[0052] Please see Figure 2 and Figure 3 Specifically, multiple fourth retaining portions 1221 are provided, and these multiple fourth retaining portions 1221 are arranged on the base 122, for example, at equal or unequal intervals. Correspondingly, multiple fifth retaining portions 114 are provided. In this way, the outer sheath connector 11 is fixed to the multiple fourth retaining portions 1221 of the fastener 12 by the multiple fifth retaining portions 114 respectively engaging with each other, so that the fastener 12 is stably fixed to the outer sheath connector 11.

[0053] Please see Figure 2 and Figure 3 In one embodiment, the fourth holding part 1221 includes, but is not limited to, various structural forms such as a claw, a buckle, a head, a pin, a holding block, a clamping arm, or a bar, which can be flexibly adjusted and set according to actual needs.

[0054] Please see Figure 2 and Figure 3 In one embodiment, the fifth retaining portion 114 includes a retaining hole 1141 formed on the inner wall of the outer sheath connector 11, and a groove 1142 communicating with the retaining hole 1141. The main body of the fourth retaining portion 1221 is located in the groove 1142, and the head of the fourth retaining portion 1221 is engaged in the retaining hole 1141. In this way, the fifth retaining portion 114 and the fourth retaining portion 1221 are tightly coupled, which can realize the stable fixation of the fastener 12 on the outer sheath connector 11.

[0055] Please see Figure 2 and Figure 3 In one embodiment, the outer wall of the seat 122 is provided with at least one first guide portion 1222 extending axially, and the inner wall of the outer sheath connector 11 is provided with a second guide portion 115 that slides and engages with the first guide portion 1222. Thus, during the assembly of the fastener 12 and the outer sheath connector 11, the first guide portion 1222 and the second guide portion 115 need to be aligned and combined. The sliding engagement of the first guide portion 1222 and the second guide portion 115 allows for rapid assembly and good stability after assembly.

[0056] Optionally, the first guide portion 1222 is configured as a guide block, and the second guide portion 115 is configured as a guide groove adapted to the first guide portion 1222. Alternatively, the first guide portion 1222 is configured as a guide groove, and the second guide portion 115 is configured as a guide block adapted to the first guide portion 1222.

[0057] Please see Figure 2 and Figure 3In one embodiment, the core 13 includes two detachable housings 134. Radio frequency (RF) terminals 131 are located in the area enclosed by the two housings 134. During assembly, the RF terminals 131 are fixedly installed in the area enclosed by the two housings 134, and then the two housings 134 are connected and fixed to each other.

[0058] In one embodiment, the connection method of the two separate shells 134 includes, but is not limited to, snap-fit ​​connection, or connection by fasteners such as screws, pins, and rivets. In this embodiment, the two separate shells 134 are snap-fit ​​connected to each other, resulting in relatively higher assembly efficiency.

[0059] Please see Figure 1 and Figure 3 In one embodiment, the ultrasound imaging catheter assembly further includes an electronic tag 41 disposed on the outer sheath connector 11 and a reader 42 disposed on the catheter socket 20. When the catheter socket 20 and the imaging catheter 10 are inserted into each other, the reader 42 can sense the electronic tag 41. Thus, when the catheter socket 20 and the imaging catheter 10 are inserted into each other, since the reader is close to the radio frequency identification (RFID) device, it can sense the information stored in the RFID device, that is, obtain the relevant information of the imaging catheter 10. Specifically, the reader 42 is, for example, a radio frequency identification (RFID) device.

[0060] Optionally, a mounting hole 116 is provided on one end of the outer sheath connector 11 near the catheter socket 20, and an electronic tag 41 is disposed inside the mounting hole 116 and sealed with sealant. Specifically, the electronic tag 41 is disposed on the end face of the outer sheath connector 11 facing the catheter socket 20, so that it can be easily detected by a radio frequency identification device.

[0061] Please refer to the following: Figure 1 The core 13 is also provided with at least one sixth retaining part 135, and the conduit terminal 30 is provided with a seventh retaining part 31 that engages with the sixth retaining part 135. During the insertion and assembly process, the conduit terminal 30 is connected and fixed to the core 13 by engaging with the sixth retaining part 135 through the seventh retaining part 31, which results in high assembly efficiency.

[0062] In one embodiment, an ultrasound imaging system includes an ultrasound imaging catheter assembly according to any of the above embodiments.

[0063] In the aforementioned ultrasound imaging system, during the assembly of the imaging catheter 10 and catheter socket 20, the outer sheath connector 11 and catheter socket 20 are interlocked and rotated. The unlocking component 22 correspondingly drives the first locking part 121 to open and release the core 13. Since the first locking part 121 releases the core 13, the socket body 21 has an axial channel 211 that avoids the core 13. The catheter terminal 30 is snapped into contact with the core 13, allowing the catheter terminal 30 to drive the core 13 to retract axially and / or rotate at any angle in the circumferential direction, thus enabling the acquisition of omnidirectional image information of the blood vessel wall. Compared to related technologies, the overall structure is simpler, improving work efficiency and reducing production assembly costs. The production assembly process is simple and stable, facilitating mass production. Furthermore, before assembling the imaging catheter 10 and catheter socket 20, the first locking part 121 secures the core 13, preventing accidental removal of the core 13 from the outer sheath connector 11, ensuring safety and effectiveness.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0066] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0070] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. An ultrasound imaging catheter assembly, characterized in that, The ultrasound imaging catheter assembly includes: An imaging catheter, the imaging catheter including an outer sheath connector and a retaining device disposed inside the outer sheath connector; The core is axially movable through the outer sheath connector, and the fastener is provided with at least two first holding parts that engage with the core; A catheter socket is rotatably engaged with an outer sheath connector. The catheter socket includes a socket body and at least two unlocking components connected to the socket body. The socket body has an axial channel that avoids the core. The unlocking components are correspondingly disposed with the first retaining portion. When the catheter socket rotates in a first direction, the unlocking component abuts against the first retaining portion, the first retaining portion opens and disengages from the core, and the catheter socket and the outer sheath connector are fixedly engaged. The core can retract axially and / or rotate at any angle in the circumferential direction, and can acquire omnidirectional image information of the vascular inner wall. When the catheter socket rotates in a second direction, the unlocking component disengages from the first retaining portion, and the first retaining portion engages with the core under a self-restoring force. The first direction is opposite to the second direction.

2. The ultrasound imaging catheter assembly according to claim 1, characterized in that, The unlocking element is a push post, push block, or push rod extending axially; and / or, all the first holding portions are arranged sequentially at intervals around the circumference of the outer sheath connector, and all the unlocking elements are arranged sequentially at intervals around the circumference of the socket body.

3. The ultrasound imaging catheter assembly according to claim 1, characterized in that, The outer wall of the core is provided with an axial limiting boss for abutting and engaging with the first retaining part; and / or, the outer wall of the core is provided with at least one limiting recess, and the first retaining part is correspondingly engaged in the limiting recess.

4. The ultrasound imaging catheter assembly according to claim 2, characterized in that, The diameter of the cavity surrounded by all the unlocking elements is the same as the outer diameter of the core; and / or, the unlocking element has an elastic portion that abuts against the core.

5. The ultrasound imaging catheter assembly according to claim 1, characterized in that, The socket body is provided with at least one second retaining part, and the outer sheath connector is provided with at least one third retaining part. The second retaining part and the third retaining part correspond to each other and engage with each other.

6. The ultrasound imaging catheter assembly according to claim 5, characterized in that, The outer wall of the outer sheath connector is provided with a sliding groove corresponding to the second retaining part. The sliding groove includes a first groove segment and a second groove segment that are connected to each other. The first groove segment extends along the axial direction of the outer sheath connector and extends to the end face of the outer sheath connector facing the catheter socket. The second groove segment extends along the circumferential direction of the outer sheath connector and extends to the third retaining part.

7. The ultrasound imaging catheter assembly according to claim 1, characterized in that, The fastener includes a seat that snaps onto the inner wall of the outer sheath connector, and the first holding part is connected to the seat.

8. The ultrasound imaging catheter assembly according to claim 7, characterized in that, The base is provided with at least one fourth retaining part, and the outer sheath joint is provided with a fifth retaining part that is engaged with the fourth retaining part; and / or, the outer wall of the base is provided with at least one first guide part that extends axially, and the inner wall of the outer sheath joint is provided with a second guide part that slides with the first guide part.

9. The ultrasound imaging catheter assembly according to claim 1, characterized in that, The core is provided with a radio frequency terminal; the ultrasound imaging catheter assembly also includes a catheter terminal, which is detachably snapped to the core, and the catheter terminal is provided with an electrical connection part, which is electrically connected to the radio frequency terminal by plugging in.

10. The ultrasound imaging catheter assembly according to any one of claims 1 to 9, characterized in that, The ultrasound imaging catheter assembly also includes an electronic tag disposed on the outer sheath connector and a reading device disposed on the catheter socket.

11. An ultrasound imaging system, characterized in that, The ultrasound imaging system includes the ultrasound imaging catheter assembly as described in any one of claims 1 to 10.

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