Ultrasonic imaging guide wire and ultrasonic imaging system

Abstract

The invention discloses an ultrasonic imaging guide wire and an ultrasonic imaging system, and relates to the technical field of ultrasonic imaging, specifically, the ultrasonic imaging guide wire comprises an imaging core part, the imaging core part comprises an ultrasonic transducer and a joint connecting piece which are sequentially connected from the far end to the near end, the ultrasonic transducer can be driven to axially move and / or rotate, and the joint connecting piece is connected with the ultrasonic transducer; a cable used for information transmission is arranged between the ultrasonic transducer and the connector connecting piece. The guide wire supporting tube is arranged outside the imaging core part, the guide wire supporting tube is arranged in a sectional mode, and the far end of the guide wire supporting tube comprises an integrated sound transmission window; according to the ultrasonic imaging guide wire and the ultrasonic imaging system, the connector capable of being quickly detached is arranged at the near end, the requirement that treatment devices are placed under the condition that the imaging core part does not retreat from the body is met, the imaging core part can axially move in the guide wire supporting tube, and the focus position or the placement condition of the treatment devices can be conveniently, instantly and continuously observed in the operation.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic imaging technology, and more specifically, to an ultrasonic imaging guide wire. In addition, the present invention also relates to an ultrasonic imaging system comprising the ultrasonic imaging guide wire. Background Art

[0002] At present, intravascular ultrasound (IVUS) is based on catheter technology and ultrasound imaging technology. It inserts a miniature ultrasound transducer catheter into the blood vessel lumen and performs a 360° scan to achieve ultrasound imaging of the vascular structure. IVUS can display the morphology, properties and distribution of vascular wall lesions in real time. It can accurately assess the degree of vascular stenosis by measuring the diameter and cross-sectional area of ​​the vascular lumen. It can identify lesions such as calcification, fibrosis and lipid pools, and find early vascular lesions that cannot be displayed by coronary angiography. It can also identify intravascular tissues and devices such as thrombi, stents and guidewires. IVUS is used to accurately guide PCI strategies (stent size selection and stent placement, etc.) and evaluate the adhesion of postoperative stents to the arterial wall. It can provide value before, after and in subsequent follow-up, and can effectively reduce the occurrence of adverse events.

[0003] However, IVUS catheters can usually only be used for imaging evaluation before or after surgery. After completing the imaging evaluation, the IVUS catheter needs to be withdrawn from the body along the guide wire so that the treatment device can enter the body along the guide wire for intraoperative operation. This means that IVUS cannot be used to observe immediate stent positioning, opening and release, and wall adhesion during surgery. As a result, many treatments are highly dependent on the operator's experience and cannot be supported by IVUS technology.

[0004] In summary, how to provide an IVUS device that can support the implementation of treatment during surgery and facilitate the use of therapeutic devices is a problem that urgently needs to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an ultrasonic imaging guide wire, a quick-detachable connector is arranged at the proximal end thereof to meet the requirement of placing a therapeutic device without withdrawing the imaging core from the body, and the imaging core can move axially within the guide wire support tube, so as to facilitate immediate and continuous observation of the lesion location or the placement of the therapeutic device during the operation.

[0006] Another object of the present invention is to provide an ultrasound imaging system including the above-mentioned ultrasound imaging guide wire, which has the same technical features and can solve the same technical problems.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] An ultrasonic imaging guide wire, comprising:

[0009] An imaging core, the imaging core comprising an ultrasonic transducer and a joint connector connected in sequence from a distal end to a proximal end, the ultrasonic transducer can be driven to move axially and / or rotate, and a cable for information transmission is arranged between the ultrasonic transducer and the joint connector;

[0010] A guidewire support tube is arranged outside the imaging core, the guidewire support tube is arranged in sections, and the distal end thereof includes an integrated sound-transmitting window, and the ultrasonic transducer is driven to perform the axial movement and / or rotation in the sound-transmitting window;

[0011] The connector comprises a locking component and a transmission component. The locking component is quickly released and sealedly coupled to the proximal end of the guidewire support tube, and the transmission component is quickly released and electrically coupled to the connector connector.

[0012] Preferably, a water inlet is provided at the proximal end of the guide wire support tube, and the water inlet and the joint connector are staggered along the axial direction of the imaging core;

[0013] An electrical contact portion is arranged on the surface of the joint connector, and a bayonet matched with the electrical contact portion is arranged inside the joint.

[0014] Preferably, the proximal end of the imaging core extends the electrical contact portion outward compared to the proximal end of the guide wire support tube, the electrical contact portion is a surface contact or a pin, the water inlet is opened on the surface of the guide wire support tube, the proximal end of the water inlet of the guide wire support tube to the proximal end of the guide wire support tube is an installation section, and the gap between the installation section and the imaging core is filled with a sealing sleeve.

[0015] Preferably, the proximal end of the imaging core extends outward by a preset length compared to the proximal end of the guide wire support tube, and the gap between the proximal end of the guide wire support tube and the proximal end of the imaging core constitutes the water inlet.

[0016] Preferably, the locking component comprises a movable sealing structure and a sealing isolation structure, a water inlet cavity is formed therebetween, and the water inlet cavity is communicated with the water inlet.

[0017] Preferably, the movable sealing structure includes a locking head and a sealing ring, the sealing ring is coaxially arranged on the outside of the proximal end of the guide wire support tube, the locking head includes an inner cylinder member and an outer sleeve member, the inner cylinder member is provided with a groove for fixing the sealing ring, the outer sleeve member is sleeved on the outside of the inner cylinder member, the outer sleeve member rotates relative to the inner cylinder member along a first direction to compress the sealing ring and the guide wire support tube, and the outer sleeve member rotates relative to the inner cylinder member along a second direction to reduce the abutment of the sealing ring on the guide wire support tube.

[0018] Preferably, the sealing isolation structure separates the water inlet and the joint connector;

[0019] The distal end of the sealing isolation structure is in a tapered shape, which matches and abuts against the shape of the water inlet cavity, so as to prevent the liquid in the water inlet cavity from affecting the electrical coupling between the joint connector and the joint.

[0020] Preferably, the center hole of the sealing isolation structure is coaxially arranged with the hole in the center of the sealing ring of the movable sealing structure, the radial dimension of the center hole of the sealing isolation structure is not larger than the outer diameter of the proximal end of the guide wire support tube, and the radial dimension of the hole in the center of the sealing ring is not smaller than the outer diameter of the proximal end of the guide wire support tube.

[0021] Preferably, a hook is provided at the distal end of the transmission component, and the hook is slidably disposed in a sliding groove in the locking component, and the sliding groove is arranged along the axial direction of the imaging core.

[0022] Preferably, the guide wire support tube includes a hollow sea wave tube and the sound-transmitting window connected to its distal end, and the surface of the hollow sea wave tube is provided with a plurality of groups of slits along its axial direction, and at least one of the width of the slits and the distribution density of the slits gradually increases from the proximal end to the distal end.

[0023] Preferably, a hydrophilic coating is disposed on the outside of the distal end of the guidewire support tube, and a PTFE coating is disposed on the outside of the proximal end of the guidewire support tube.

[0024] Preferably, a driving shaft is connected between the ultrasonic transducer and the joint connector, or the cable between the ultrasonic transducer and the joint connector cannot be axially compressed or stretched.

[0025] An ultrasonic imaging system comprises any one of the ultrasonic imaging guide wires described above and a host, wherein the host comprises a display screen, an image processing module, a signal processing module and an interface, and the interface is communicatively connected to a connector of the ultrasonic imaging guide wire.

[0026] Compared with the prior art, the ultrasonic imaging guide wire provided by the present invention has at least the following beneficial effects:

[0027] 1. The guide wire of the present application is an active device. By setting up two sets of connections, namely, the proximal end of the guide wire support tube and the locking component, and the proximal end of the imaging core and the transmission component, both of which adopt a quick-release structure. The guide wire support tube and the imaging core can be quickly separated from the joint both before and during the operation, and then the therapeutic device can be quickly and conveniently mounted on the guide wire with IVUS function, so as to conveniently complete the assembly of the guide wire and the therapeutic device in the preoperative preparation stage. During the operation, the therapeutic device can be inserted from the proximal end of the guide wire support tube to the guide wire without withdrawing the imaging core from the body, so as to conveniently complete the assembly of the guide wire and the therapeutic device or replace the therapeutic device during the operation.

[0028] 2. The imaging core can be driven to move axially and / or rotate within the acoustic window, thereby meeting the need for immediate and continuous observation of the lesion and / or placement of the treatment device during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of the ultrasonic imaging system provided by the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the ultrasound imaging guide wire provided by the present invention;

[0032] Figure 3 A schematic structural diagram of another embodiment of the ultrasound imaging guide wire provided by the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the guide wire support tube provided by the present invention;

[0034] Figure 5 A schematic diagram of the structure of the imaging core provided by the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the joint connector provided by the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the joint provided by the present invention;

[0037] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0038] Fig. 9 This is a schematic diagram of the structure of the host provided by the present invention.

[0039] In the figure:

[0040] 1. Ultrasonic imaging guide wire; 11. Imaging core; 111. Drive shaft; 112. Transducer base; 113. Connector connector; 1131 electrical contact; 114. Ultrasonic transducer; 115. Cable; 12. Guide wire support tube; 121. Hollow hypotube; 122. Sound-transmitting window; 123. Water outlet; 124. Water inlet; 13. Sealing sleeve;

[0041] 2. Connector; 21. Locking component; 211. Water inlet interface; 212. Locking head; 213. Sealing ring; 214. Sealing isolation structure; 215. Sliding groove; 22. Transmission component; 221. Hook; 23. Connecting cable; 24. Connecting plug;

[0042] 3. Host; 31. Display screen; 32. Image processing module; 33. Signal processing module; 34. Interface. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. For the distal end and proximal end in the specific implementation method, the distal end refers to the part of the corresponding component away from the operator, usually the end of the component entering the patient's body or the surgical area, and the proximal end refers to the part of the corresponding component close to the operator, usually the end held or operated by the operator. For a single component, the end closer to the operator is the proximal end, and the end farther away from the operator is the distal end. Furthermore, the end closest to the operator is the proximal end, and the end farthest from the operator is the distal end. Unless otherwise specified below, the above description should be given priority for understanding, and no further elaboration will be given.

[0045] In addition, it should be noted that the connection mentioned in this application includes both direct connections between systems, components, and parts, and connections between systems, components, and parts through a medium, that is, indirect connections. Those skilled in the art should not understand this as a limitation but should adapt it according to specific needs, which does not exceed the scope of protection of this application.

[0046] The core of the present invention is to provide an ultrasonic imaging guide wire, a quick-detachable connector is arranged at the proximal end of which the guide wire support tube and the imaging core can be quickly separated from the connector both before and during the operation, so as to quickly and conveniently carry the therapeutic device on the guide wire with IVUS function, so as to conveniently complete the assembly of the guide wire and the therapeutic device in the preoperative preparation stage, and the therapeutic device can be inserted from the proximal end of the guide wire support tube to the guide wire without withdrawing the imaging core from the body during the operation, so as to conveniently complete the assembly of the guide wire and the therapeutic device or replace the therapeutic device during the operation, and the imaging core can move axially in the guide wire support tube, so as to facilitate the immediate and continuous observation of the lesion position or the placement of the therapeutic device during the operation.

[0047] Another core of the present invention is to provide an ultrasound imaging system including the above-mentioned ultrasound imaging guide wire, which has the same technical features and can solve the same technical problems.

[0048] Please refer to Figure 2-Figure 9 , an ultrasound imaging guide wire, comprising:

[0049] An imaging core 11, the imaging core 11 comprises an ultrasonic transducer 114 and a joint connector 113 connected in sequence from the distal end to the proximal end, the ultrasonic transducer 114 can be driven to move axially and / or rotate, and a cable 115 for information transmission is arranged between the ultrasonic transducer 114 and the joint connector 113;

[0050] The guidewire support tube 12 is arranged outside the imaging core 11. The guidewire support tube is arranged in sections, and the distal end thereof includes an integrated sound-transmitting window 122. The ultrasonic transducer 114 is driven to perform axial movement and / or rotation in the sound-transmitting window 122.

[0051] The connector 2 comprises a locking component 21 and a transmission component 22. The locking component 21 and the proximal end of the guidewire support tube 12 are quickly released and sealedly coupled, and the transmission component 22 and the connector connector 113 are quickly released and electrically coupled.

[0052] like Figure 5 As shown, an ultrasonic transducer 114 is arranged at the distal end of the imaging core 11, a connector 113 is arranged at the proximal end, and an electric cable 115 for information transmission is arranged between the two, so that the ultrasonic transducer 114 can be actively connected, and the ultrasonic transducer 114 can be driven to move axially and / or rotate, so as to meet the continuous and / or 360° observation requirements, and a quick-release electrical coupling is adopted between the connector 113 and the transmission component 22, so that the imaging core 11 and the connector 2 can be quickly separated during the operation, so as to avoid the inconvenience caused by the proximal connector 2 electrically connected to the imaging core 11 to the guide wire carrying the therapeutic device, and during the placement of the therapeutic device, the imaging core 11 and the transmission component 22 are connected again, so that the real-time observation of the state of the lesion or the placement of the therapeutic device can be restored during the operation.

[0053] In some embodiments, the ultrasonic transducer 114 is a single crystal, ceramic or ceramic composite single-element transducer, which needs to be rotated to obtain a 360° observation field of view. In some embodiments, the ultrasonic transducer 114 is a ring array or a phased array, that is, a 360° observation field of view can be obtained without rotating the ultrasonic transducer 114. During the operation, a continuous and 360° observation field of view can be obtained by only driving the ultrasonic transducer 114 axially.

[0054] In some embodiments, Figure 4 As shown, an integrated sound-transmitting window 122 is provided at the distal end of the guidewire support tube 12, which provides a channel for the movement of the ultrasonic transducer 114 and meets the imaging requirements of the ultrasonic transducer 114. At the same time, the distal structure of the guidewire support tube 12 is simplified, and the overall process difficulty and cost are reduced; and the proximal end of the guidewire support tube 12 is connected to the locking component 21 by a quick-release sealing coupling. During the operation, the guidewire support tube 12 and the locking component 21 can be quickly separated, thereby reducing the obstacles to the placement of the therapeutic device. Further, the sound-transmitting window 122 can be sleeved on the distal end of the hollow sea wave tube 121 in an interference fit manner, and heat-shrink fixed with a heat shrink tube. The distal end of the sound-transmitting window is formed into a smooth head end, ensuring a relatively stable connection between the sound-transmitting window 122 and the hollow sea wave tube 121 and ensuring the sound wave transmission of the ultrasonic transducer 114. At the same time, as the distal end of the guide wire, it is ensured that the patient's tissues and blood vessels are not damaged during the process of the guide wire entering the human body.

[0055] In some embodiments, the hollow sea wave tube 121 can be made of materials such as 304, 316 or NIti; the sound-transmitting window 122 can be made of materials with good sound transmission performance such as HDPE and PE.

[0056] In some embodiments, a water inlet 124 is provided at the proximal end of the guide wire support tube 12, and the water inlet 124 and the joint connector 113 are staggered along the axial direction of the imaging core 11;

[0057] An electrical contact portion 1131 is disposed on the surface of the connector connector 113 , and a bayonet that cooperates with the electrical contact portion 1131 is disposed inside the connector 2 .

[0058] like Figure 2 and Figure 3 As shown, a water inlet 124 is provided at the proximal end of the guide wire support tube 12, and a liquid medium is filled into the guide wire support tube 12 through the water inlet 124 to improve the clarity of the image observed when the imaging core 11 moves in the guide wire support tube 12, and in some embodiments, a water outlet 123 is provided at the distal end of the guide wire support tube 12, so that the liquid medium in the guide wire support tube 12 can be discharged from the guide wire support tube 12 through the water outlet 123, thereby reducing the piston effect when the imaging core 11 moves axially in the guide wire support tube 12;

[0059] In addition, an electrical contact portion 1131 is provided on the surface of the joint connector 113. Since the joint connector 113 and the water inlet 124 are axially staggered, the electrical contact portion 1131 and the water inlet 124 are also staggered, thereby effectively avoiding leakage problems caused by direct contact of the liquid medium in the guide wire support tube 12 with the electrical contact portion 1131.

[0060] At the same time, a bayonet is provided in the transmission component 22 in the connector 2. When the connector connector 113 is connected to the transmission component 22, the electrical contact portion 1131 is combined with the bayonet to conduct electricity.

[0061] like Figure 5 and Figure 6 As shown, the electrical contact portion 1131 of the connector 113 is a pin, and the side wall of the connector 113 is provided with a groove, the bayonet of the transmission component 22 is a retaining spring socket, and the retaining spring socket is provided with protruding ribs, when the pin is inserted into the retaining spring socket, the protruding ribs can be embedded in the groove, thereby realizing the quick-release electrical coupling of the connector 113 and the transmission component 22.

[0062] In some embodiments, the proximal end of the imaging core 11 extends an electrical contact portion 1131 outward compared to the proximal end of the guide wire support tube 12 , the electrical contact portion 1131 is a surface contact or a pin, and the water inlet 124 is disposed on the surface of the guide wire support tube 12 .

[0063] like Figure 2 As shown, only the electrical contact portion 1131 of the imaging core 11 extends to the outside of the proximal end of the guide wire support tube 12, and the water inlet 124 is arranged on the surface of the guide wire support tube 12, and a sealing sleeve 13 is arranged between the proximal end of the imaging core 11 and the proximal end of the guide wire support tube 12. The proximal end of the water inlet of the guide wire support tube 12 to the proximal end of the guide wire support tube is an installation section, and the gap between the installation section and the imaging core is filled with the sealing sleeve 13, which is used to seal the gap between the proximal end of the imaging core 11 and the proximal end of the guide wire support tube 12, and the sealing sleeve 13 is located on the side of the water inlet 124 close to the proximal end, so it can effectively prevent the liquid medium entering through the water inlet 124 from flowing out through the proximal end of the guide wire support tube 12 to affect the electrical coupling of the joint connector 113.

[0064] At the same time, the electrical contact portion 1131 in the form of a pin or a surface contact is extended out of the proximal end of the guide wire support tube 12 to prevent the electrical contact portion 1131 from contacting the liquid medium.

[0065] In some embodiments, the proximal end of the imaging core 11 extends outward by a preset length compared to the proximal end of the guide wire support tube 12, and the gap between the proximal end of the guide wire support tube 12 and the proximal end of the imaging core 11 constitutes a water inlet 124. The preset extended length is adapted to the axial spacing between the locking component 21 and the transmission component 22 to ensure that the water inlet 124 is matched with the locking component 21 while the joint connector 113 is electrically connected to the transmission component 22.

[0066] like Figure 3 As shown, the proximal end of the imaging core 11 extends out of the proximal preset length of the guide wire support tube 12, and the gap between the proximal end of the guide wire support tube 12 and the proximal end of the imaging core 11 can be used as a water inlet 124, so that the liquid medium can directly enter the guide wire support tube 12 through the water inlet 124.

[0067] In some embodiments, the locking component 21 includes a movable sealing structure and a sealing isolation structure 214 , a water inlet cavity is formed therebetween, and the water inlet cavity is communicated with the water inlet 124 .

[0068] like Figure 7 and Figure 8 As shown, a water inlet cavity is formed in the locking component 21 by a movable sealing structure and a sealing isolation structure, and the water inlet 124 is connected to the water inlet cavity, so that the liquid medium in the water inlet cavity can enter the guide wire support tube 12 through the water inlet 124;

[0069] At the same time, the locking component 21 also includes a water inlet interface 211 connected to the water inlet chamber, so that the liquid medium can continuously enter the water inlet chamber, even if the liquid medium in the water inlet chamber always maintains a certain working pressure, and can thus smoothly pass through the water inlet 124 into the sound-transparent window 122 at the far end of the guide wire support tube 12.

[0070] In some embodiments, the movable sealing structure includes a locking head 212 and a sealing ring 213, the sealing ring 213 is coaxially arranged on the outside of the proximal end of the guide wire support tube 12, the locking head 212 includes an inner cylinder member and an outer sleeve member, the inner cylinder member is provided with a groove for fixing the sealing ring 213, the outer sleeve member is sleeved on the outside of the inner cylinder member, the outer sleeve member rotates relative to the inner cylinder member along a first direction to compress the sealing ring 213 and the guide wire support tube 12, and the outer sleeve member rotates relative to the inner cylinder member along a second direction to reduce the abutment of the sealing ring 213 on the guide wire support tube 12.

[0071] like Figure 7As shown, the movable sealing structure includes a locking head 212 and a sealing ring 213. The sealing ring 213 is arranged in a groove hole at the distal end of the locking head 212. The locking head 212 includes an inner cylinder and an outer sleeve. At the same time, the guide wire support tube 12 passes through the hole in the center of the sealing ring 213. When the locking head 212 rotates in a first direction, the overlapping portion of the outer sleeve and the inner cylinder increases when rotating in the first direction, so that the inner cylinder can squeeze the sealing ring 213, so that the aperture of the central hole is reduced, that is, the sealing ring 213 and the guide wire support tube 12 are close to each other. The outer wall of the guide wire support tube 12 is sealed and abutted. When the locking head 212 rotates in the second direction, the overlapping portion of the outer sleeve and the inner cylinder is reduced, thereby reducing the squeezing of the sealing ring 213, that is, the central aperture of the sealing ring 213 has a tendency to recover, and the pressure and friction between the sealing ring 213 and the outer wall of the guide wire support tube 12 are reduced. By rotating the outer sleeve, for example, the outer sleeve and the inner cylinder are connected by threads, the quick-release sealing coupling of the guide wire support tube 12 and the locking component 21 can be conveniently achieved.

[0072] The first direction and the second direction are two opposite rotation directions. It can be understood that the rotation direction can be one of a clockwise direction and a counterclockwise direction.

[0073] In some embodiments, the sealing isolation structure 214 separates the water inlet 124 and the joint connector 113; the distal end of the sealing isolation structure 214 is tapered and abuts against the shape of the water inlet cavity to prevent the liquid in the water inlet cavity from affecting the electrical coupling between the joint connector 113 and the joint 2.

[0074] like Figure 8 As shown, the sealing isolation structure 214 separates the water inlet 124 and the joint connector 113 on both sides thereof, thereby preventing the liquid medium from affecting the electrical contact portion 1131;

[0075] When only the electrical contact portion 1131 of the imaging core 11 extends out of the proximal end of the guide wire support tube 12, the proximal end of the guide wire support tube 12 passes through the central hole of the sealing isolation structure 214, and grease may be further provided between the proximal end of the guide wire support tube 12 and the central hole of the sealing isolation structure 214 to improve the sealing performance between the outer wall of the guide wire support tube 12 and the central hole of the sealing isolation structure 214;

[0076] When the proximal end of the imaging core 11 extends a preset length compared to the proximal end of the guide wire support tube 12, the proximal end of the imaging core 11 passes through the central hole of the sealing isolation structure 214, and the inner wall of the central hole of the sealing isolation structure 214 can be further provided with grease for sliding sealing with the proximal outer wall of the imaging core 11.

[0077] In some embodiments, the center hole of the sealing isolation structure 214 is coaxially arranged with the hole in the center of the sealing ring 213 of the movable sealing structure; and the radial size of the center hole of the sealing isolation structure 214 is not greater than the outer diameter of the proximal end of the guide wire support tube 12, so as to ensure that the liquid in the water inlet 124 flows into the vicinity of the undesired joint connector 113; the radial size of the hole in the center of the sealing ring 213 is not less than the outer diameter of the proximal end of the guide wire support tube 12, so as to facilitate the sealing ring 213 and the guide wire support tube 12 to be compressed by rotation. The sealing of the liquid medium is guaranteed and it is convenient for the operator to quickly plug and unplug to achieve alignment and quick-release connection. In combination with other embodiments, the locking component 21 has a groove for placing the sealing ring 213 respectively, and the sealing isolation structure 214 is accommodated in the water inlet cavity, and the distal end of the sealing isolation structure 214 is in a tapered shape to increase the sealing of the isolation water inlet and the joint connector 113, and further avoid the leakage problem caused by the direct contact of the liquid medium in the guide wire support tube 12 with the electrical contact part 1131.

[0078] In some embodiments, a hook 221 is disposed at the distal end of the transmission component 22 . The hook 221 is slidably disposed in a sliding groove 215 in the locking component 21 . The sliding groove 215 is arranged along the axial direction of the imaging core 11 .

[0079] like Figure 8 As shown, due to the flexibility of the guidewire support tube 12, the length of the sound-transmitting window 122 arranged at the distal end of the guidewire support tube 12 is limited, that is, the effective axial movement displacement of the ultrasonic transducer 114 in the guidewire support tube 12 for continuous imaging is limited. When the displacement of the ultrasonic transducer 114 exceeds the effective displacement, the imaging effect is not good. Therefore, a sliding groove 215 of a preset length is provided in the locking component 21, and the hook 221 of the transmission component 22 is slidably provided in the sliding groove 215 to limit the maximum displacement of the transmission component 22. It is preferred that the length of the sliding groove 215 is not greater than the effective movement displacement of the ultrasonic transducer 114, that is, to ensure that the ultrasonic transducer 114 is always in the effective displacement range during the entire movement of the transmission component 22, so that continuous imaging can be achieved.

[0080] In some embodiments, the guidewire support tube 12 includes a hollow hypotube 121 and a sound-transmitting window 122 connected to its distal end. The surface of the hollow hypotube 121 is provided with a plurality of slits along its own axial direction, and at least one of the width of the slits and the distribution density of the slits gradually increases from the proximal end to the distal end. Furthermore, in some embodiments, the distal end of the hollow hypotube 121 can be ground to reduce the outer diameter, which also helps to increase the flexibility of the distal end of the hollow hypotube 121, and the smaller distal end of the hollow hypotube 121 also facilitates the guidewire to be suitable for thinner blood vessels.

[0081] like Figure 4As shown, the surface of the hollow sea wave tube 121 is provided with a plurality of groups of slits along its own axial direction, and at least one of the width of the slits and the distribution density of the slits gradually increases from the proximal end to the distal end, so that the flexibility of the distal end of the hollow sea wave tube 121 is greater than that of the proximal end, thereby enabling the guide wire support tube 12 to be inserted into the blood vessel by tracking, and facilitating the operator to control the delivery at the distal end.

[0082] In some embodiments, a hydrophilic coating is disposed on the distal end of the guidewire support tube 12 , and a PTFE coating is disposed on the proximal end of the guidewire support tube 12 .

[0083] The surface of the distal end of the acoustic window 122 and the hollow hypotube 121 is coated with a hydrophilic coating, which has a lubricating effect, so that the segment of the guidewire support tube 12 can be smoothly pushed or withdrawn in the blood vessel. At the same time, the hydrophilic coating can also play a role in sealing the slit, so that the liquid medium can efficiently flow from the proximal end of the guidewire support tube 12 to the distal end, avoiding leakage from the slit;

[0084] At the same time, a PTFE coating is provided on the proximal end of the hollow hypotube 121. The PTFE coating also has a lubricating effect, which can make the relative movement between the proximal end of the guide wire support tube 12 and the locking component 21 have less resistance during quick release.

[0085] In some embodiments, a drive shaft 111 is connected between the ultrasonic transducer 114 and the joint connector 113 , or a cable 115 between the ultrasonic transducer 114 and the joint connector 113 cannot be axially compressed or stretched.

[0086] like Figure 5 As shown, the distal end of the driving shaft 111 is fixedly connected to the transducer base 112, the ultrasonic transducer 114 is fixedly arranged in the transducer base 112, and the joint connector 113 is fixedly connected to the proximal end of the driving shaft 111. When the transmission component 22 drives the joint connector 113 to rotate or move axially, it can be transmitted to the ultrasonic transducer 114 through the driving shaft 111, driving the ultrasonic transducer 114 to rotate or move axially, and the driving shaft 111 is a hollow shaft, and the cable 115 can pass through the hollow part of the driving shaft 111 to reduce the space occupied by the imaging core 11 in the guide wire support tube 12;

[0087] However, for the ultrasonic transducer 114 in the form of a circular array or phased array, a 360° observation field of view can be obtained without rotation, so it is only necessary to drive the ultrasonic transducer 114 to move axially. Therefore, it is only necessary to ensure that the cable 115 cannot be compressed or stretched axially to ensure that the movement of the transmission component 22 can be transmitted to the ultrasonic transducer 114 in a nearly one-to-one manner.

[0088] For ease of understanding, this description further provides a control method for the ultrasonic imaging guide wire 1, which includes, through the quick-release connection of the imaging core 11 and the guide wire support tube 12 with the connector 2, separating the connector to expose the proximal ends of the imaging core 11 and the guide wire support tube 12, and putting the treatment device on the ultrasonic imaging guide wire 1 in the preoperative preparation stage or the intraoperative stage, and identifying the area of ​​interest to the operator such as the lesion or treatment site through the IVUS imaging function of the ultrasonic imaging guide wire 1. After determining that the ultrasonic transducer at the distal end of the ultrasonic imaging guide wire 1 has reached the area, the treatment device is pushed along the ultrasonic imaging guide wire 1 to the area for treatment operation. If the treatment component needs to be switched during the process, the ultrasonic imaging guide wire 1 is left in the original area and the treatment device is withdrawn separately, and then another treatment device is used and pushed along the ultrasonic imaging guide wire 1 to the original area to continue the treatment.

[0089] Further explanation, the quick-release connection between the imaging core 11 and the guidewire support tube 12 and the connector 2 can facilitate the operator to flexibly use the IVUS imaging function in the preoperative preparation stage or the intraoperative stage, and conveniently realize the disconnection and loading functions of the ultrasound imaging guidewire 1. Even though the ultrasound imaging guidewire 1 provided by the present application is an active device compared to conventional guidewires, it can still maintain an operating experience that is basically consistent with conventional guidewires, and obtain the support of IVUS technology during surgery without overturning existing operating habits, and conveniently observe the immediate stent positioning, opening and release, and wall adhesion during surgery, etc., to help the operator improve the synchronization and precision of diagnosis and treatment.

[0090] In addition, the operator can pump water to expel the gas inside the ultrasound imaging guide wire 1 before the ultrasound imaging guide wire 1 enters the patient's body according to actual use needs. At the same time, the ultrasound transducer image information can be verified before the ultrasound imaging guide wire 1 enters the patient's body according to needs. When to perform the sleeve assembly of the ultrasound imaging guide wire 1 and the treatment device is determined by the operator according to needs or application scenarios. Generally, the ultrasound transducer of the ultrasound imaging guide wire 1 works alone to obtain the target image and then the treatment component is withdrawn into the patient's body along the ultrasound imaging guide wire 1.

[0091] In addition to the ultrasonic imaging guide wire 1 disclosed in the above-mentioned embodiments, the present invention also provides an ultrasonic imaging system including the above-mentioned ultrasonic imaging guide wire, including any one of the above-mentioned ultrasonic imaging guide wires 1 and a host 3, the host 3 includes a display screen 31, an image processing module 32, a signal processing module 33 and an interface 34, and the interface 34 is connected to the connector 2 by wire or wireless communication.

[0092] like Figure 1 and Figure 7As shown, the transmission component 22 is electrically connected to the connecting plug 24 via the connecting cable 23, that is, the bayonet in the transmission component 22 for connecting to the electrical contact portion 1131 is electrically connected to the connecting plug 24 via the connecting cable 23, and the connecting plug 24 is connected to the interface 34 by wired or wireless communication, and can be further configured to be able to achieve a plug-in connection that can be quickly plugged in and out, and obtain information from the ultrasonic transducer 114, and after decoding and analysis by the signal processing module 33 and the image processing module 32, imaging is performed through the display screen 31.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] The ultrasonic imaging guide wire and ultrasonic imaging system provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An ultrasonic imaging guide wire, characterized in that: include: An imaging core, the imaging core comprising an ultrasonic transducer and a joint connector connected in sequence from a distal end to a proximal end, the ultrasonic transducer can be driven to move axially and / or rotate, and a cable for information transmission is arranged between the ultrasonic transducer and the joint connector; A guidewire support tube is arranged outside the imaging core, the guidewire support tube is arranged in sections, and the distal end thereof includes an integrated sound-transmitting window, and the ultrasonic transducer is driven to perform the axial movement and / or rotation in the sound-transmitting window; The connector comprises a locking component and a transmission component. The locking component is quickly released and sealedly coupled to the proximal end of the guidewire support tube, and the transmission component is quickly released and electrically coupled to the connector connector.

2. The ultrasound imaging guide wire according to claim 1, characterized in that: The proximal end of the guide wire support tube is provided with a water inlet, and the water inlet and the joint connector are staggered along the axial direction of the imaging core; An electrical contact portion is arranged on the surface of the joint connector, and a bayonet matched with the electrical contact portion is arranged inside the joint.

3. The ultrasound imaging guide wire according to claim 2, characterized in that: The proximal end of the imaging core extends the electrical contact portion outward compared to the proximal end of the guide wire support tube, and the electrical contact portion is a surface contact or a pin. The water inlet is opened on the surface of the guide wire support tube, and the proximal end of the water inlet of the guide wire support tube to the proximal end of the guide wire support tube is an installation section, and the gap between the installation section and the imaging core is filled with a sealing sleeve.

4. The ultrasound imaging guide wire according to claim 2, characterized in that: The proximal end of the imaging core extends outward by a preset length compared to the proximal end of the guide wire support tube, and the gap between the proximal end of the guide wire support tube and the proximal end of the imaging core constitutes the water inlet.

5. The ultrasound imaging guide wire according to claim 2, characterized in that: The locking component comprises a movable sealing structure and a sealing isolation structure, a water inlet cavity is formed between the movable sealing structure and the sealing isolation structure, and the water inlet cavity is communicated with the water inlet.

6. The ultrasound imaging guide wire according to claim 5, characterized in that: The movable sealing structure includes a locking head and a sealing ring, the sealing ring is coaxially arranged on the proximal end of the guide wire support tube, the locking head includes an inner cylinder and an outer sleeve, the inner cylinder is provided with a groove for fixing the sealing ring, the outer sleeve is sleeved on the outside of the inner cylinder, the outer sleeve rotates relative to the inner cylinder along a first direction to compress the sealing ring and the guide wire support tube, and the outer sleeve rotates relative to the inner cylinder along a second direction to reduce the abutment of the sealing ring on the guide wire support tube.

7. The ultrasound imaging guide wire according to claim 5, characterized in that: The sealing isolation structure separates the water inlet and the joint connector; The distal end of the sealing isolation structure is in a tapered shape, which matches and abuts against the shape of the water inlet cavity, so as to prevent the liquid in the water inlet cavity from affecting the electrical coupling between the joint connector and the joint.

8. The ultrasound imaging guide wire according to claim 5, characterized in that: The center hole of the sealing isolation structure is coaxially arranged with the hole in the center of the sealing ring of the movable sealing structure. The radial dimension of the center hole of the sealing isolation structure is not larger than the outer diameter of the proximal end of the guide wire support tube, and the radial dimension of the hole in the center of the sealing ring is not smaller than the outer diameter of the proximal end of the guide wire support tube.

9. The ultrasound imaging guide wire according to claim 1, characterized in that: A hook is arranged at the distal end of the transmission component, and the hook is slidably arranged in a sliding groove in the locking component, and the sliding groove is arranged along the axial direction of the imaging core.

10. The ultrasound imaging guide wire according to claim 1, characterized in that: The guide wire support tube includes a hollow sea wave tube and the sound-transmitting window connected to its distal end. The surface of the hollow sea wave tube is provided with a plurality of groups of slits along its own axial direction, and at least one of the width of the slits and the distribution density of the slits gradually increases from the proximal end to the distal end.

11. The ultrasound imaging guide wire according to claim 1, characterized in that: A hydrophilic coating is disposed on the outside of the distal end of the guidewire support tube, and a PTFE coating is disposed on the outside of the proximal end of the guidewire support tube.

12. The ultrasound imaging guide wire according to any one of claims 1 to 11, characterized in that: A driving shaft is connected between the ultrasonic transducer and the joint connector, or the cable between the ultrasonic transducer and the joint connector cannot be axially compressed or stretched.

13. An ultrasonic imaging system, characterized in that: It comprises the ultrasound imaging guide wire as described in any one of claims 1-12 and a host, the host comprising a display screen, an image processing module, a signal processing module and an interface, and the interface is communicatively connected to the connector of the ultrasound imaging guide wire.

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