Sensor connecting device of ultrasonic probe, ultrasonic probe assembly and puncture system

Abstract

The utility model discloses a sensor connecting device of an ultrasonic probe, an ultrasonic probe assembly and a puncture system.The sensor connecting device of the ultrasonic probe comprises a buckle body, the first end of the buckle body is arranged to be of a surrounding structure, the surrounding structure is used for surrounding the front end of an intraoperative ultrasonic probe, and the buckle body is provided with an avoiding groove used for avoiding an emission sound window of the intraoperative ultrasonic probe; a fastening structure is arranged at the second end of the buckle main body, and the fastening structure is used for fastening the buckle main body on the intraoperative ultrasonic probe; the fastening structure comprises a plurality of first notches formed in the second end of the buckle body in the circumferential direction, and the second end of the buckle body is divided into a plurality of first fastening pieces distributed at intervals through the first notches. The fastening structure further comprises a screwing piece, and the screwing piece is connected to the outer side of the second end of the buckle body in a sleeving mode and is in threaded connection with the first fastening pieces. And the mounting piece is arranged on the buckle main body, and a mounting part for mounting an electromagnetic navigation sensor suite is arranged on the mounting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to a sensor connecting device of an ultrasonic probe, an ultrasonic probe assembly and a puncture system. Background Art

[0002] In the 1990s, the integration of ultrasound technology and laparoscopic technology led to the emergence of laparoscopic ultrasound (LUS). With high-resolution images, LUS can detect tiny satellite lesions and metastatic lesions, mark important duct structures, determine the cutting margin, and guide puncture, making up for the blind spots of laparoscopic liver surgery. It is also figuratively called the "third eye" of surgeons.

[0003] Unlike puncture under the guidance of open ultrasound, laparoscopic ultrasound-guided puncture has neither a puncture stand nor precise guide wire guidance, nor a dedicated puncture needle. The surgeon selected an 18G PTC needle for puncture, but the needle was not long enough for puncturing certain liver segments. The surgeon needs to perform puncture by hand, and the puncture needle cannot be inserted from any direction or angle. In order to see the needle track clearly, LUS-guided intrahepatic portal vein puncture should try to choose to insert the needle from the foot side to the head side, and determine the puncture point on the liver surface according to the position of the probe, the depth of the channel, and the angle between the puncture needle and the probe. After the needle is inserted, the probe is withdrawn and the needle track is found. The probe adjusts its position according to the depth of the needle insertion, and the needle tip is monitored throughout the process to avoid other important channel structures. When the needle tip approaches the portal vein of the target liver segment, only a slight axial rotation of the probe is required to simultaneously display the needle track and the target liver pedicle. The positional relationship between the needle track and the target liver pedicle is determined to determine whether the needle tip can further penetrate the portal vein of the target liver segment.

[0004] In most cases, the LUS probe shows an oblique section of the liver. The clockwise and counterclockwise axial rotation of the probe represents the movement of the scanning plane toward the right foot and left head. Clinically, the direction of needle insertion can be adjusted based on this change in orientation combined with the relative position of the needle track and the target portal vein. If the needle track deviates far from the target portal vein, it is necessary to withdraw the needle and reselect the puncture point on the liver surface. Repeated adjustments and corrections are made to accurately penetrate the target portal vein, and after withdrawing the needle core, blood is aspirated and the corresponding dye is injected.

[0005] Currently, there are LUS probes with puncture channels and guide wires. However, since the puncture channel is in the center of the probe and the angle is fixed, it is difficult for the operator to accurately insert the needle into the channel through abdominal wall puncture, and a slight inappropriate angle will cause further difficulty in needle insertion. Since the probe cannot rotate after the needle is inserted, it is difficult to display the needle channel and needle tip, and the puncture success rate is low. In view of the high technical requirements for intrahepatic portal vein puncture under LUS, the existing LUS probes and puncture kits (such as puncture needles) are far from meeting the use requirements of surgeons. Therefore, this technology is difficult to popularize and promote in a short period of time, and this technology urgently needs to be developed and improved. Utility Model Content

[0006] The main purpose of the utility model is to provide a sensor connection device of an ultrasound probe and an intraoperative ultrasound probe assembly to solve the problem in the related art that it is difficult to determine the position of the puncture kit during laparoscopic ultrasound-guided puncture surgery, resulting in difficulty in puncture.

[0007] In order to achieve the above-mentioned object, the present application provides a sensor connection device of an ultrasound probe, comprising:

[0008] A buckle body, wherein the first end of the buckle body is configured as an enclosing structure, the enclosing structure is used to enclose the front end of the intraoperative ultrasound probe, and the buckle body is provided with an avoidance groove for avoiding the emission acoustic window of the intraoperative ultrasound probe;

[0009] A fastening structure is provided at the second end of the buckle body, and the fastening structure is used to fasten the buckle body to the intraoperative ultrasound probe;

[0010] The fastening structure includes a plurality of first notches circumferentially arranged at the second end of the buckle body, and the second end of the buckle body is divided into a plurality of first fastening pieces spaced apart by the plurality of first notches;

[0011] The fastening structure further includes a tightening member, which is sleeved on the outer side of the second end of the buckle body and is threadedly connected with each of the first fastening sheets to press the first fastening sheets tightly against the outer side of the intraoperative ultrasound probe;

[0012] The mounting piece is arranged on the buckle body, and the mounting piece is provided with a mounting portion for mounting the electromagnetic navigation sensor kit.

[0013] Furthermore, the outer side of the first fastening plate has an external thread and a smooth first connecting surface, and the external thread and the first connecting surface are distributed along the front-to-back direction of the first fastening plate;

[0014] An internal thread and a first pressing surface are arranged on the inner side of the tightening member, and the internal thread and the first pressing surface are distributed along the front-rear direction of the tightening member;

[0015] The internal thread is threadedly connected to the external thread, and the first clamping surface is a reduced diameter structure toward the rear end, so that when the tightening member and the first fastening plate are threadedly connected, the first clamping surface can squeeze the first connecting surface so that the first fastening plate is pressed tightly against the outer side of the acoustic window.

[0016] Furthermore, a first limiting boss is provided on the first fastening plate, and the first limiting boss is located at the front end of the external thread. The inner diameter of the front end part of the internal thread on the tightening member is larger than the outer diameter of the external thread and smaller than the outer diameter of the first limiting boss. The first limiting boss is used to limit the stroke of the tightening member.

[0017] Furthermore, a knurled groove is provided on the outer side of the tightening member.

[0018] Furthermore, four first notches are provided and are evenly distributed along the circumferential direction.

[0019] Furthermore, the first fastening sheet includes a first sheet body and a second sheet body arranged front and back, the inner surface of the first sheet body and the inner surface of the second sheet body are located on the same circumferential surface, and the thickness of the first sheet body is smaller than the thickness of the second sheet body;

[0020] The external thread and the first connecting surface are both located on the second sheet body.

[0021] Furthermore, the mounting member is a slot member provided at the inner bottom of the buckle body, the mounting portion is a mounting groove provided on the slot member, and the mounting groove is used to install the electromagnetic navigation sensor kit.

[0022] Furthermore, the slot is configured as a long strip structure, and a first limiting structure is also provided at the inner bottom of the buckle body. A second limiting structure assembled with the first limiting structure is provided on the slot member, and the first limiting structure and the second limiting structure cooperate to limit the axial movement of the slot member in the slot.

[0023] According to another aspect of the present application, an ultrasound probe assembly is provided, comprising: an intraoperative ultrasound probe, an electromagnetic navigation sensor kit and the above-mentioned sensor connecting device, wherein the electromagnetic navigation sensor kit is installed to the front end of the intraoperative ultrasound probe through the sensor connecting device.

[0024] According to another aspect of the present application, a puncture system is provided, comprising the above-mentioned ultrasound probe assembly, a puncture kit and a navigation device, wherein the puncture kit is provided with another electromagnetic navigation sensor kit;

[0025] The navigation device is configured to extract electromagnetic signals received by two electromagnetic navigation sensor kits, and determine the positional relationship between the puncture kit and the intraoperative ultrasound probe based on the extracted electromagnetic signals.

[0026] Furthermore, the navigation device is also used to display the positional relationship. When an extension line of the puncture kit in the puncture direction intersects with the ultrasonic plane of the ultrasonic probe assembly, at least the intersection is displayed in the ultrasonic image, and / or when the body of the puncture kit or its extension line is coplanar with the ultrasonic plane, the extension line is displayed in the ultrasonic image.

[0027] The present application achieves the purpose of using the mounting piece to install the electromagnetic navigation sensor kit on the buckle body. After the buckle body is installed on the front end of the intraoperative ultrasound probe, it can maintain a fixed connection with the intraoperative ultrasound probe using a fastening structure, that is, the electromagnetic navigation sensor kit is fixed to the intraoperative ultrasound probe, and the relative position of the puncture kit and the intraoperative ultrasound probe can be obtained after cooperating with the electromagnetic navigation sensor kit on the puncture kit, thereby achieving the technical effect of being able to obtain the position of the puncture kit during the puncture process in the laparoscopic ultrasound-guided puncture surgery, facilitating the doctor to perform the puncture operation, and improving the puncture success rate, thereby solving the problem in the related art that it is difficult to determine the position of the puncture kit in the laparoscopic ultrasound-guided puncture surgery, resulting in difficulty in puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The drawings and descriptions of the schematic embodiments of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0029] Figure 1 It is a schematic diagram of the structure of an intraoperative ultrasound probe according to an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the installation position of the electromagnetic navigation sensor kit according to an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of the installation position of the connecting member according to the embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a buckle body according to an embodiment of the utility model;

[0033] Figure 5 It is a structural schematic diagram of the assembly of the buckle body and the mounting member according to one embodiment of the utility model;

[0034] Figure 6 It is a structural schematic diagram of a buckle body being installed to an intraoperative ultrasound probe according to an embodiment of the utility model;

[0035] Figure 7 yes Figure 6A schematic cross-sectional structure diagram of;

[0036] Figure 8 It is a schematic diagram of the exploded structure of the electromagnetic navigation sensor kit and the sensor connection device after installation according to one embodiment of the utility model;

[0037] Fig. 9 yes Figure 8 A side view structural schematic diagram of;

[0038] Fig.10 It is a schematic diagram of the assembly structure of the electromagnetic navigation sensor kit and the sensor connection device after installation according to one embodiment of the utility model;

[0039] Fig.11 yes Fig.10 A schematic diagram of the assembly structure from another perspective;

[0040] Fig.12 It is a schematic diagram of the structure of the bending portion of the ultrasonic probe after bending in different directions according to one embodiment of the utility model;

[0041] Fig.13 It is a structural schematic diagram of the probe during surgery after the sensor connection device is installed and before it passes through the puncture card according to one embodiment of the utility model;

[0042] Fig.14 It is a structural schematic diagram of the probe after passing through the puncture card during surgery after the sensor connection device is installed according to one embodiment of the utility model;

[0043] Fig.15 It is a structural schematic diagram of a buckle body according to an embodiment of the utility model;

[0044] Fig.16 It is a schematic diagram of the axial structure of the buckle body according to one embodiment of the utility model;

[0045] Fig.17 It is a structural schematic diagram of a mounting member according to an embodiment of the utility model;

[0046] Fig.18 It is a structural schematic diagram of the fastening structure being opened according to one embodiment of the utility model;

[0047] Fig.19 This is a schematic diagram of the structure after the fastening structure is fastened according to one embodiment of the utility model;

[0048] Among them, 1 intraoperative ultrasound probe, 101 handle end, 102 handle, 103 insertion tube, 104 bending part, 105 sound window part, 106 emission sound window, 2 connecting piece, 21 buckle body, 201 avoidance part, 202 slot, 203 first limit structure, 204 disassembly hole, 205 surrounding structure, 22 mounting piece, 221 slot piece, 220 mounting slot, 23 fastening structure, 230 variable width slot,

[0049] 238 first notch, 239 first fastening sheet, 2391 first sheet body, 2392 first connecting surface, 2393 external thread, 2394 second sheet body, 240 tightening member, 2401 internal thread, 2402 first pressing surface,

[0050] 3 electromagnetic navigation sensor kit, 301 electromagnetic navigation sensor, 302 protection tube, 3020 first tube body, 3021 second tube body, 4 fixing buckle, 5 poking card. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0052] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0053] Unlike puncture under the guidance of open laparoscopic ultrasound, puncture guided by LUS (laparoscopic ultrasound) has neither a puncture stand nor precise guide wire guidance, nor a dedicated puncture needle. The surgeon selected an 18G PTC needle for puncture, but the needle was not long enough for puncturing certain liver segments. The surgeon needs to puncture by hand, and the puncture needle cannot be inserted from any direction or angle. In order to see the needle track clearly, LUS-guided intrahepatic portal vein puncture should try to choose to insert the needle from the foot side to the head side, and determine the puncture point on the liver surface according to the position of the probe, the depth of the channel, and the angle between the puncture needle and the probe. After the needle is inserted, the probe is withdrawn and the needle track is found. The probe adjusts its position according to the depth of the needle insertion, and the needle tip is monitored throughout the process to avoid other important channel structures. When the needle tip approaches the portal vein of the target liver segment, the needle track and the target liver pedicle can be displayed simultaneously by slightly rotating the probe axially. The positional relationship between the needle track and the target liver pedicle is determined to determine whether the needle tip can further penetrate the portal vein of the target liver segment.

[0054] In most cases, the LUS probe shows an oblique section of the liver. The clockwise and counterclockwise axial rotation of the probe means that the scanning plane moves toward the right foot and left head. The direction of needle insertion can be adjusted according to this change in position combined with the relative position of the needle channel and the target portal vein. If the needle channel deviates far from the target portal vein, it is necessary to withdraw the needle and reselect the puncture point on the liver surface. Repeated adjustments and corrections are made to accurately penetrate the target portal vein. After withdrawing the needle core, blood is aspirated and the corresponding dye is injected. If there is bleeding at the needle insertion point on the liver surface, electrocoagulation can be used to stop bleeding. Currently, there are LUS probes with puncture channels and guide wires. However, since the puncture channel is in the center of the probe and the angle is fixed, it is difficult for the operator to accurately insert the needle into the channel through abdominal wall puncture. A slight inappropriate angle will cause further difficulty in needle insertion. Since the probe cannot rotate after needle insertion, it is difficult to display the needle channel and needle tip, and the success rate of puncture is low. Given the high technical requirements for intrahepatic portal vein puncture under LUS, the existing LUS probes and puncture needles are far from meeting the requirements of surgeons. Therefore, this technology is difficult to popularize and promote in a short period of time, and this technology urgently needs to be developed and improved.

[0055] As a necessary supplement to percutaneous ultrasound-guided liver tumor ablation, LUS-guided liver tumor ablation treatment is fully visible. The use of high-frequency ultrasound imaging can not only accurately monitor the needle tract in real time and deal with possible complications during the operation in a timely manner, but also assist in protecting surrounding organs through instruments to ablate tumors in "dangerous areas" under percutaneous ultrasound, such as the liver surface, diaphragmatic top, second liver portal, caudate lobe of the liver, gallbladder side, and liver surface, thereby achieving better safety and effectiveness. However, due to the space-occupying effect of Trocar, ultrasound probe and ablation needle outside the abdominal cavity, the puncture under LUS guidance cannot be performed within the percutaneous ultrasound-guided scanning plane, and the ultrasound exploration plane is at an angle to the needle insertion plane. Therefore, it is necessary to slightly rotate the probe axially to adjust the intersection of the two planes in order to better observe the needle tract and evaluate the depth and angle of the needle insertion. Therefore, the puncture is extremely difficult, and this technology urgently needs to be developed and improved.

[0056] Since the needle track has two "fulcrums" on the abdominal wall and the surface of the liver parenchyma, it is difficult to flexibly operate the electrode needle under laparoscopy. For this reason, surgeons discussed a variety of technical points. Even with the assistance of LUS, repeated punctures are still required during the process of puncturing the liver parenchyma to find a suitable path to enter the tumor.

[0057] Therefore, the current laparoscopic anatomical liver resection, portal vein positive staining and counter staining of the target liver segment, and intraoperative LUS-guided liver tumor ablation puncture require surgeons to have good three-dimensional anatomy and stereoscopic vision, and to master proficient ultrasound operation skills, which places very high comprehensive requirements on doctors. Doctors have difficulty determining the position of the puncture kit (such as the puncture needle) during laparoscopic ultrasound-guided puncture surgery, which makes puncture difficult.

[0058] For this reason, Figures 2 to 11 As shown, the embodiment of the utility model provides a sensor connection device, including: a connection member 2, the connection member 2 is used to be detachably fixedly connected to the front end of the intraoperative ultrasound probe 1, and the connection member 2 is provided with a avoidance portion 201 for avoiding the emission acoustic window 106 of the intraoperative ultrasound probe 1;

[0059] The mounting member 22 is disposed on the connecting member 2 , and a mounting portion for mounting the electromagnetic navigation sensor kit 3 is provided on the mounting member 22 .

[0060] In this embodiment, the sensor connection device is a structure capable of installing the electromagnetic navigation sensor kit 3 to the front end of the intraoperative ultrasound probe 1. Figure 1 As shown, the intraoperative ultrasound probe 1 used in the sensor connection device includes an acoustic window portion 105, an insertion tube 103, a handle end 101 and a probe wire, wherein the acoustic window portion 105 is located at the front end of the entire probe, the acoustic window portion 105 includes an emission acoustic window 106, a bending portion 104 is between the acoustic window portion 105 and the insertion tube 103, the acoustic window portion 105 and the bending portion 104 are connected by a rigid connection portion, and the probe wire is connected to the rear end of the handle end 101. When in use, the bending portion 104 can drive the acoustic window portion 105 to bend forward, backward, leftward, or rightward by operating the handle 102 of the handle end 101.

[0061] In this embodiment, the sensor connection device includes a connection member 2 with a connection function, and the connection function of the connection member 2 is mainly in two aspects, one of which is that the connection member 2 can be connected to the front end of the intraoperative ultrasound probe 1, and the other is that the connection member 2 can be connected to the electromagnetic navigation sensor kit 3. In other words, in this embodiment, the connection member 2 includes at least two connection ends, one of which can be connected to the intraoperative ultrasound probe 1, and the other connection end can be connected to the electromagnetic navigation sensor kit 3, so that the electromagnetic navigation sensor kit 3 can be fixed to the front end of the intraoperative ultrasound probe 1 through the connection member 2.

[0062] On this basis, in order to facilitate the independent installation of the connector 2 on the intraoperative ultrasound probe 1 for use, a detachable connection method is adopted between one connecting end of the connector 2 and the intraoperative ultrasound probe 1 in this embodiment, such as snap connection, bonding, threaded connection, etc., and this embodiment does not limit its specific sensor connection device. Since the connector 2 needs to be inserted into the human body with the ultrasound probe, the connector 2 needs to have biocompatibility and non-magnetic characteristics to provide a stable and firm fixing method for the interventional navigation electromagnetic navigation sensor 301 during surgery, so as to bring clear real-time puncture images and help doctors perform surgical operations accurately.

[0063] According to the structural characteristics of the intraoperative ultrasound probe 1, such as Figure 3As shown, it has an emission acoustic window 106 for emitting ultrasonic waves on the acoustic window portion 105. Therefore, the connector 2 needs to ensure from a structural point of view that it will not affect the normal emission of ultrasonic waves by the emission acoustic window 106 after being installed on the intraoperative ultrasonic probe 1. To this end, in this embodiment, a avoidance portion 201 for avoiding the emission acoustic window 106 of the intraoperative ultrasonic probe 1 is provided on the connector 2.

[0064] In one embodiment of the avoidance portion 201, the avoidance portion 201 may be a avoidance groove opened on the connecting member 2, and the position and size of the avoidance groove are designed according to the position and size of the transmitting sound window 106 so that the ultrasonic wave emitted through the transmitting sound window 106 can pass through the avoidance groove normally.

[0065] In another embodiment of the avoidance portion 201, the connection position and shape of the connector 2 can be designed so that the connector 2 does not extend to the position of the acoustic window 106, so that it will not interfere with the emission of ultrasonic waves after installation. It should be noted that the above-mentioned specific configuration description of the avoidance portion 201 is not restrictive and can be designed according to actual needs.

[0066] like Figure 4 and Figure 5 As shown, since the other connecting end of the connecting member 2 needs to be installed with the electromagnetic navigation sensor kit 3, for this purpose, in this embodiment, a mounting member 22 is also provided on the connecting member 2, and the mounting member 22 can cooperate with the electromagnetic navigation sensor kit 3 to fix the electromagnetic navigation sensor kit 3 to the connecting member 2.

[0067] There are multiple connection modes between the mounting member 22 and the electromagnetic navigation sensor suite 3 . In one embodiment, the mounting member 22 may be a slot structure formed on the connecting member 2 , and the slot structure can at least partially accommodate the electromagnetic navigation sensor suite 3 .

[0068] In another embodiment, the mounting member 22 may be a snap-fit ​​structure formed on the connecting member 2 , and the mounting member 22 may be snap-fitted and fixed to the connecting member 2 with the electromagnetic navigation sensor kit 3 through the snap-fit ​​structure.

[0069] In another embodiment, the mounting member 22 may be a mounting channel formed on the connector 2, the mounting channel is closed in the circumference and open at both ends, and the electromagnetic navigation sensor kit 3 can be inserted into the mounting channel for fixing, etc. This embodiment does not limit the specific connection method between the mounting member 22 and the electromagnetic navigation sensor kit 3, and can be designed according to actual needs. It should also be noted that the position of the mounting member 22 also needs to avoid the emission acoustic window 106 to avoid interference of the electromagnetic navigation sensor kit 3 with the emission of ultrasonic waves.

[0070] During use, the electromagnetic navigation sensor kit 3 can be first installed on the connecting piece 2, and then the connecting piece 2 can be installed on the front end of the intraoperative ultrasound probe 1. The connecting piece 2 can also be first installed on the front end of the intraoperative ultrasound probe 1 by adjusting the structure of the connecting piece 2, and then the electromagnetic navigation sensor kit 3 can be installed on the connecting piece 2. Alternatively, the electromagnetic navigation sensor kit 3 can be first installed to the set position on the intraoperative ultrasound probe 1, and then the connecting piece 2 can be installed to the front end of the intraoperative ultrasound probe 1, and the electromagnetic navigation sensor kit 3 can be fixed at the same time through the connecting piece 2.

[0071] During the operation, the electromagnetic navigation sensor kit 3 located at the front end of the ultrasound probe can receive electromagnetic signals. After being electrically connected to an external electromagnetic navigation device, the navigation device can determine the spatial position of the electromagnetic navigation sensor kit 3 based on the electromagnetic signal, and convert it into the spatial position of the ultrasound probe through a specific algorithm. In conjunction with the electromagnetic navigation sensor kit on the puncture kit, the positional relationship between the puncture kit and the ultrasound probe, that is, the positional relationship between the puncture kit and the ultrasound image, can be established, ultimately enabling the operator to operate the puncture kit to perform a puncture operation based on the positional relationship.

[0072] Specifically, in this embodiment, since the electromagnetic navigation sensor kit 3 can be fixedly mounted to the front end of the intraoperative ultrasound probe 1 by means of the connector 2, the relative position between the intraoperative ultrasound probe 1 and the electromagnetic navigation sensor kit 3 can be determined based on the position of the electromagnetic navigation sensor kit 3. Since the relative position is fixed, the relative position can be used to establish a coordinate system with the position of the intraoperative ultrasound probe 1 or the position of the electromagnetic navigation sensor kit 3 as the origin. Then, the position of the puncture kit can be converted into the coordinate system by means of the electromagnetic navigation sensor kit on the puncture kit, thereby determining the relative position of the puncture kit and the intraoperative ultrasound probe, and thus determining the position of the puncture kit in the intraoperative ultrasound probe or the acquired ultrasound image, and the operator can use this position to perform the puncture operation of the puncture kit.

[0073] On the one hand, the utility model achieves the purpose of using the mounting piece 22 to mount the electromagnetic navigation sensor kit 3 on the connecting piece 2, and at the same time the connecting piece 2 can be mounted to the front end of the intraoperative ultrasound probe 1, and then the relative position of the puncture kit and the intraoperative ultrasound probe 1 can be obtained after cooperating with the electromagnetic navigation sensor kit on the puncture kit, thereby achieving the technical effect of being able to clearly determine the position of the puncture kit during the puncture process in the laparoscopic ultrasound-guided puncture surgery, facilitating the doctor to perform the puncture operation, and improving the puncture success rate, thereby solving the problem in the related technology that it is difficult to determine the position of the puncture kit in the laparoscopic ultrasound-guided puncture surgery, resulting in difficulty in puncture.

[0074] On the other hand, since the connector 2 and the intraoperative ultrasound probe 1 use a detachable sensor connection device, the connector is easy to replace during use. At the same time, in some surgical environments, the connector 2 can be removed and the intraoperative ultrasound probe 1 can be used alone, which improves the flexibility of surgical operations.

[0075] On the other hand, after the electromagnetic navigation sensor kit 3 is installed on the intraoperative ultrasound probe 1 through the connector 2 , it can provide a hardware basis for subsequently acquiring the position of the intraoperative ultrasound probe 1 .

[0076] According to the structure of the intraoperative ultrasound probe 1, the transmitting acoustic window 106 is only provided on one side of the acoustic window portion 105, and the components arranged on the back side of the acoustic window portion 105 and on both sides of the transmitting acoustic window 106 on the acoustic window portion 105 will not interfere with the transmitting acoustic window 106. Therefore, the position of the mounting part 22 on the connecting part 2 can be selected to be at a position corresponding to the back side of the transmitting acoustic window 106 or on any side of the adjacent two sides of the transmitting acoustic window 106.

[0077] In a preferred embodiment, Figure 4 and Figure 5 As shown, the mounting member 22 is located at the back side of the avoidance portion 201 , so that the electromagnetic navigation sensor suite 3 after installation is located at the back side of the transmitting acoustic window 106 .

[0078] According to the structure of the intraoperative ultrasound probe 1, the front end of the ultrasound probe has an acoustic window portion 105 and a bending portion 104, and the bending portion 104 is made of a flexible material to meet the bending requirements of the acoustic window portion 105. Since the position of the front end of the ultrasound probe (i.e., the transmitting acoustic window 106) needs to be obtained through the electromagnetic navigation sensor kit 3, the electromagnetic navigation sensor kit 3 is preferably fixed relative to the acoustic window portion 105, that is, during the bending process of the acoustic window portion 105, the relative positions of the electromagnetic navigation sensor kit 3 and the transmitting acoustic window 106 are fixed.

[0079] To this end, in this embodiment, the electromagnetic navigation sensor kit 3 needs to be fixed to the acoustic window portion 105 through the connecting member 2. In order to prevent the connecting member 2 from interfering with the bending of the bending portion 104, in this embodiment, the connecting member 2 needs to be located at the front end of the bending portion 104 after being connected to the acoustic window portion 105, so that the connecting member 2 can bend with the acoustic window portion 105 (such as Fig.12 As shown), the relative positions of the electromagnetic navigation sensor suite 3 and the transmitting acoustic window 106 are fixed.

[0080] In one embodiment, the distance between the rear end of the connecting member 2 and the front end of the bending portion 104 is 2-6 mm, more preferably 3-4 mm, and even more preferably 3 mm.

[0081] In one connection mode between the connector 2 and the intraoperative ultrasound probe 1, the connector 2 is connected to the front end of the intraoperative ultrasound probe 1 by snapping. Specifically, in this embodiment, Figure 4 and Figure 5 As shown, the connecting member 2 includes a buckle body 21 , which is used for buckling connection with the front end of the intraoperative ultrasound probe 1 , and the mounting member 22 is arranged on the inner side of the buckle body 21 .

[0082] In this embodiment, the buckle body 21 can be buckled to the front end of the intraoperative ultrasound probe 1, so as to facilitate the installation and removal of the buckle body 21. In a specific connection method, a corresponding buckle structure can be provided on both the buckle body 21 and the intraoperative ultrasound probe 1, and the buckle connection is realized by the cooperation of two buckle structures (for example, the cooperation of the buckle protrusion and the slot, etc.). In another specific connection method, the buckle structure can be provided only on the buckle body 21, and the intraoperative ultrasound probe 1 is not adjusted, and the buckle body 21 is fixed only by the buckle structure on the buckle body 21 and the intraoperative ultrasound probe 1. In order to reduce the use cost, it is preferred that the buckle structure is provided only on the buckle body 21, and the intraoperative ultrasound probe 1 is not adjusted. In this embodiment, the buckle structure of the buckle body 21 also has a variety of settings, for example, the buckle structure can be tightened on the intraoperative ultrasound probe 1 through its own elastic deformation, or the buckle structure is additionally arranged with a structure that can apply a fastening force (for example, a hoop-like structure), etc., which is not limited in this embodiment.

[0083] Based on the above implementation, Figure 5 As shown, the mounting member 22 is a slot member 221 disposed at the inner bottom of the buckle body 21 , and the mounting portion is a mounting groove 220 disposed on the slot member 221 , and the mounting groove 220 is used to install the electromagnetic navigation sensor kit 3 .

[0084] Specifically, it should be noted that the slot member 221 in this embodiment can be installed as an independent structure to the inner bottom of the buckle body 21, or can be a structure directly formed on the inner bottom of the buckle body 21. The mounting groove 220 formed on the slot member 221 can at least partially accommodate the electromagnetic navigation sensor kit 3, and preferably can fully accommodate the signal receiving end of the electromagnetic navigation sensor kit 3. The profile and size of the mounting groove 220 need to be compatible with the electromagnetic navigation sensor kit 3 to be installed, and its specific size is not limited in this embodiment.

[0085] Based on the above implementation, Figure 5As shown, the slot member 221 is preferably installed in the buckle body 21 as an independent structure. Therefore, in order to facilitate the installation of the slot member 221, a slot 202 is provided on the inner side of the buckle body 21 in this embodiment, and the slot member 221 is installed in the slot 202. The slot 202 forms a working channel for accommodating an electronic device component. In this embodiment, the electronic device component is a sensor kit composed of the slot member 221 and the electromagnetic navigation sensor kit 3. The specific structure of the slot 202 is adapted to the structure of the slot member 221, so that the slot member 221 can be installed in the slot 202. In one embodiment, the slot 202 is a long strip slot body, and the corresponding slot member 221 is a long strip structure, which can at least be partially loaded into the slot 202. In order to reduce the occupied space, it is preferred that the slot member 221 can be fully loaded into the slot 202.

[0086] In one embodiment of the electromagnetic navigation sensor suite 3, as Figure 8 As shown, the electromagnetic navigation sensor kit 3 includes an electromagnetic navigation sensor 301 and a protective tube 302. The electromagnetic navigation sensor 301 needs to be installed in the protective tube 302 for use. The protective tube 302 can be a nickel-titanium protective tube. The electromagnetic navigation sensor 301 is installed in the protective tube 302, and then the protective tube 302 is installed in the slot 221. The electromagnetic navigation sensor 301, the protective tube 302 and the slot 221 can form a sensor kit. After installation, the outer side of the protective tube 302 is fitted in the installation groove 220, and the depth of the installation groove 220 is greater than or equal to the outer diameter of the protective tube 302.

[0087] In one embodiment, Figure 5 As shown, the front end of the installation slot 220 is a closed structure, and the rear end of the installation slot 220 is an open structure. The front end of the main body of the electromagnetic navigation sensor 301 extends out of the protection tube 302 and abuts against the inner front side of the closed structure.

[0088] It should be noted that the protection tube 302 can be a nickel-titanium protection tube. Of course, the material for making the protection tube 302 is not limited to nickel-titanium material. One or more combinations of titanium alloy or PI tube can also be selected as needed.

[0089] In one embodiment of the sensor kit, Figure 8 and Fig. 9 As shown, the nickel-titanium protection tube 302 constituting the sensor kit is set to two, namely a first tube body 3020 and a second tube body 3021, wherein the outer diameter of the first tube body 3020 is smaller than the inner diameter of the second tube body 3021, the first tube body 3020 can be movably sleeved in the second tube body 3021, and the electromagnetic navigation sensor 301 can be installed in the first tube body 3020.

[0090] In this embodiment, the front end of the second tube 3021 is located behind the mounting member 22, and the front end of the first tube 3020 extends to the second tube 3021 and is installed in the mounting groove 220. The length of the first tube 3020 extending from the second tube 3021 is greater than the length of the curved portion 104 on the intraoperative ultrasound probe 1.

[0091] Specifically, the front end of the first tube body 3020 extends to a position close to the front end of the electromagnetic navigation sensor 301, and the front end of the second tube body 3021 extends to a position close to the rear end of the bending portion 104 of the intraoperative ultrasound probe 1, that is, the length of the second tube body 3021 is significantly shorter than the length of the first tube body 3020. The front end of the first tube body 3020, the front end of the electromagnetic navigation sensor 301, and the acoustic window portion 105 of the intraoperative ultrasound probe 1 are relatively fixed, and the three can be bent synchronously. The second tube body 3021 is relatively fixed to the part of the intraoperative ultrasound probe 1 located at the rear end of the bending portion 104, so for the electromagnetic navigation sensor 301 and the first tube body 3020, when they are bent, they will move linearly relative to the second tube body 3021, and their movement process will not affect the second tube body 3021.

[0092] like Figures 9 to 11 As shown, the tail end of the electromagnetic navigation sensor 301 can be fixed together with the wiring harness of the intraoperative ultrasound probe 1, and a reserve amount for the displacement change caused by the bending of the acoustic window portion 105 is reserved at an appropriate place (such as the ultrasound handle 102). Therefore, overall, when the acoustic window portion 105 is bent, the front end of the electromagnetic navigation sensor 301 located at the lower end of the acoustic window portion 105 does not change in relative position. The tail end of the electromagnetic navigation sensor 301 fixed to the wiring harness also does not change in relative position. In the intermediate stage, it makes a forward and backward displacement in the channel established by the second tube body 3021. In one embodiment, the left and right bending displacements of the acoustic window portion 105 are consistent, with a maximum displacement of 0.9 cm; the maximum displacement for forward bending is 2.5 cm; and the maximum displacement for backward bending is 1.1 cm.

[0093] Since the electromagnetic navigation sensor 301 includes a cable portion, the cable portion needs to extend to the tail end of the intraoperative ultrasound probe 1, and the corresponding first tube body 3020 and the second tube body 3021 also need to extend toward the rear end, so that the cable portion of the electromagnetic navigation sensor 301, the rear end portion of the first tube body 3020, and the second tube body 3021 are located behind the buckle body 21, that is, the buckle body 21 cannot play the role of connecting the portion to the intraoperative ultrasound probe 1. Therefore, in order to facilitate the connection of the portion to the intraoperative ultrasound probe 1 to improve the stability and convenience of use, a number of fixed buckles 4 are also provided in this embodiment, and the fixed buckles 4 can be snapped onto the intraoperative ultrasound probe 1, and the fixed buckles 4 can be elastic C-shaped clips. The fixed buckles 4 can be arranged from the rear end of the curved portion 104 of the intraoperative ultrasound probe 1 to avoid affecting the bending of the curved portion 104. A number of fixed clips can be arranged along the cable portion of the electromagnetic navigation sensor 301, the rear end portion of the first tube body 3020, and the second tube body 3021.

[0094] In one embodiment, the size of the buckle body 21 and the size of the electromagnetic navigation sensor kit 3 mentioned in the above embodiment need to be suitable for the puncture card 5 (also called a puncture cannula) with a size specification of 12.5 mm. Under the size restriction of the puncture card 5, there are certain requirements for the structure of the buckle body 21, the sensor connection device between the buckle body 21 and the intraoperative ultrasound probe 1, the structure of the electromagnetic navigation sensor kit 3, and the sensor connection device between the electromagnetic navigation sensor kit 3 and the buckle body 21. Under the premise of ensuring that the puncture card 5 can be passed through, the corresponding structural parts need to have sufficient structural strength and connection stability. The assembly process of the intraoperative ultrasound probe 1 with the puncture card 5 after the connector 2 and the electromagnetic navigation sensor kit 3 are installed is as follows: Fig.13 and Fig.14 shown.

[0095] After the buckle body 21 is connected to the intraoperative ultrasound probe 1, it should be firmly fixed to the probe without rotation or offset, etc., to avoid affecting the parameters of the debugged electromagnetic navigation sensor kit 3. In this embodiment, the buckle body 21 is used to be sleeved and fixed on the acoustic window portion 105. In order to improve the firmness of the connection, the inner wall of the buckle body 21 in this embodiment is attached to the outer wall of the acoustic window portion 105, the first end of the buckle body 21 is limitedly connected to the front end of the acoustic window portion 105, and the second end of the buckle body 21 has an opening for being sleeved and fixed to the rear end of the acoustic window portion 105.

[0096] Specifically, in this embodiment, if Figure 8As shown, the overall shape of the buckle body 21 is similar to the acoustic window portion 105, and its inner side profile needs to meet the outer side of the acoustic window portion 105, so as to reduce the overall volume and improve the connection firmness. In addition, in order to avoid relative axial movement between the buckle body 21 and the acoustic window portion 105, the buckle body 21 needs to have a corresponding limiting structure. In this embodiment, the first end of the buckle body 21 is connected to the front end of the acoustic window portion 105. Specifically, a plurality of limiting pieces can be formed at the first end of the buckle body 21, and the limiting pieces are located at the front end of the acoustic window portion 105 and abut against the acoustic window portion 105, thereby limiting the buckle body 21 from moving to the rear end relative to the acoustic window portion 105. Alternatively, the outer front end of the buckle body 21 can be a closed surrounding structure 205, and the surrounding structure 205 is used to surround the front end of the intraoperative ultrasonic probe 1, and the front end of the acoustic window portion 105 (i.e., the front end of the intraoperative ultrasonic probe 1) is surrounded by the surrounding structure 205, thereby playing a limiting role.

[0097] Since the buckle body 21 also needs to be inserted into the human body, in order to avoid causing harm to the body, the first end of the buckle body 21 can be a dome-type closed structure, that is, the outer front side of the surrounding structure 205 is an arc surface. In some embodiments, the outer front side of the surrounding structure 205 can also be other structural forms, and this application does not limit it here. On this basis, the inner front side of the surrounding structure 205 matches the front end of the intraoperative ultrasound probe 1, so that the inner front side of the surrounding structure 205 can fit on the front end of the intraoperative ultrasound probe 1, and at the same time play a role of limiting and fastening.

[0098] The axial position of the card slot 202 on the buckle body 21 will affect the axial position of the card slot member 221, and further affect the axial position of the electromagnetic navigation sensor kit 3. In one embodiment, Figure 8 As shown, the slot 202 is configured such that after the slot member 221 is connected to the slot 202, the front end of the electromagnetic navigation sensor kit 3 installed in the slot member 221 is axially shorter than the front end of the emission acoustic window 106. Specifically, the axial position of the electromagnetic navigation sensor kit 3 may be approximately 1 / 2 of the length of the front end of the emission acoustic window 106, or may be approximately 1 / 3 or 1 / 4 of the length of the front end, and the present invention does not impose any particular limitation on this.

[0099] The position of the electromagnetic navigation sensor kit 3 is mainly selected based on whether the emission acoustic window 106 of the ultrasound probe 1 during the operation will interfere with the signal transmission of the electromagnetic navigation sensor kit 3. When the emission acoustic window 106 does not interfere with the electromagnetic navigation sensor kit 3, the position of the electromagnetic navigation sensor kit 3 is diversified. In this embodiment, it is preferably located at the 1 / 2 position of the emission acoustic window 106, so as to facilitate calibration and calculation. When the emission acoustic window 106 interferes with the electromagnetic navigation sensor kit 3, the electromagnetic navigation sensor kit 3 needs to extend out of the front end of the emission acoustic window 106, and the corresponding slot 221 needs to extend out of the front end of the emission acoustic window 106.

[0100] Since the slot member 221 is a structure independently installed in the buckle body 21, in order to avoid axial relative movement between the slot member 221 and the buckle body 21, as shown in FIG. Figure 5 As shown, in this embodiment, a first limiting structure 203 is further provided on the inner bottom of the buckle body 21, and a second limiting structure 222 assembled with the first limiting structure 203 is provided on the slot member 221. The first limiting structure 203 and the second limiting structure 222 cooperate to limit the axial movement of the slot member 221 in the slot 202.

[0101] Specifically, in order to limit the axial movement of the slot member 221 in the slot 202, the first limiting structure 203 and the second limiting structure 222 can be radially matched. In one embodiment, the first limiting structure 203 is a limiting groove provided in the buckle body 21, and the second limiting structure 222 is a limiting protrusion provided on the slot member 221; and / or,

[0102] The first limiting structure 203 is a limiting protrusion provided in the buckle body 21, and the second limiting structure 222 is a limiting groove provided on the slot member 221. In this embodiment, the positions of the limiting groove and the limiting protrusion are not limited, as long as the limiting groove can match the limiting protrusion.

[0103] In one embodiment, the first limiting structure 203 is a limiting groove provided in the buckle body 21, and the second limiting structure 222 is a limiting protrusion provided on the slot member 221;

[0104] The limiting grooves are located at both sides of the slot 202 and communicate with the slot 202 . The limiting protrusions are arranged at both sides of the slot member 221 and correspond to the limiting grooves.

[0105] In this embodiment, the cooperation between the limiting grooves and the limiting protrusions on both sides can better limit the axial movement and deviation of the slot member 221, thereby improving the firmness of the slot member 221 after installation.

[0106] In another embodiment, the limiting groove is configured as a plurality of slots spaced apart in the buckle body 21 , and the limiting portion is a plurality of convex points spaced apart on the slot member 221 , and the convex points correspond to the slots.

[0107] In this embodiment, the slot hole can be formed at the bottom of the card slot 202, and the corresponding protrusion is formed at the bottom of the card slot member 221. The slot holes are arranged in a plurality and can be distributed in an array or in a triangle, etc., and the protrusions have the same distribution mode, and the card slot member 221 is limited by the cooperation of the slot holes and the protrusions.

[0108] Since the buckle body 21 needs to enter the body with the ultrasound probe, in order to prevent the body fluid from entering the card slot 202 and causing the card slot member 221 to stick to the card slot 202, making it difficult to remove the card slot member 221, such as Figure 4 and Figure 5 As shown, in this embodiment, a disassembly hole 204 is provided at the bottom of the buckle body 21, the disassembly hole 204 is communicated with the card slot 202, and the disassembly hole 204 is used for a disassembly tool to pass through to remove the card slot member 221. The hole can be a round hole or a square hole, etc.

[0109] The avoidance portion 201 is provided on the buckle body 21 to avoid interference with the emission acoustic window 106, thereby avoiding affecting the fit between the acoustic window and the organ and causing adverse effects on the ultrasound imaging operation, such as Figure 7 As shown, the upper end surface of the buckle body 21 in this embodiment is flush with or lower than the upper end surface of the acoustic emission window 106 .

[0110] In order to reduce the use cost, this embodiment adopts the implementation method of only improving the buckle body 21 so that it can be fixed to the acoustic window portion 105. Therefore, in order to make the buckle actively fixed firmly, such as Figure 6 As shown, in this embodiment, a fastening structure 23 is provided at the second end of the buckle body 21 , and the fastening structure 23 is used to fasten the buckle body 21 to the acoustic window portion 105 .

[0111] In this embodiment, the fastening structure 23 has various forms. In one embodiment, the fastening structure 23 may be an elastically deformable structure on the buckle body 21 connected to the acoustic window portion 105. In another embodiment, the fastening structure 23 may be a clamping structure similar to a clamp. In yet another embodiment, the fastening structure 23 may be a pin-like structure, and so on.

[0112] In one embodiment of the fastening structure 23, as Fig.15 and Fig.16As shown, the buckle body 21 is configured as a cylindrical thin-walled structure, the second end of the buckle body 21 is configured as a near-circular ring structure, and the fastening structure 23 includes a deformable wide groove 230 opened at the second end of the buckle body 21. The deformable wide groove 230 allows the opening to produce elastic deformation to fasten the intraoperative ultrasound probe 1 that is adapted to a certain outer diameter range.

[0113] Specifically, when the second end of the buckle body 21 is sleeved to the acoustic window portion 105, the second end of the buckle body 21 can produce a certain elastic deformation under the pressure of the acoustic window portion 105 through the deformation wide groove 230, so that it is tightly held on the acoustic window portion 105. The deformation amount of the second end of the buckle body 21 can also be increased by the deformation wide groove 230, so that it can adapt to more sizes of ultrasonic probes. It should be noted that the deformation wide groove 230 can be set to one, and the deformation wide groove 230 can also be set to multiple. Of course, the more the number of deformation wide grooves 230 and the larger the width, the easier it is for the second end of the buckle body 21 to produce a larger elastic deformation, but its fastening ability is also reduced, so the number and width of the deformation wide grooves 230 can be reasonably selected. In one embodiment, there is one deformation wide groove 230 with a width of 3mm.

[0114] Since the buckle body 21 is provided with an escape groove, on this basis, in order to make the second end of the buckle body 21 have better deformation ability, the two ends of the wide deformation groove 230 in this embodiment are respectively connected with the escape groove and the end of the buckle body 21. Further, in order to ensure the fastening ability of the second end of the buckle body 21, the width of the wide deformation groove 230 is smaller than the width of the escape groove, and the wide deformation groove 230 corresponds to the middle of the escape groove.

[0115] On the basis of providing the deformable wide groove 230, in order to further improve the connection firmness between the buckle body 21 and the acoustic window portion 105, the fastening structure 23 in this embodiment further includes an adhesive member, which is adhesively wound around the second end of the buckle body 21 and is used to press the second end of the buckle body 21 tightly against the acoustic window portion 105. The adhesive member can be a medical tape.

[0116] In this embodiment, if Fig.17 As shown, the card slot 202 in the buckle body 21 is a long strip structure, and the corresponding card slot member 221 is also a long strip structure.

[0117] The buckle body 21 can be processed with TC4 (titanium 4) material. It has been verified that TC4 material can be used as an implant material, meets medical conditions such as biocompatibility, and has been tested to have no interference or weakening of the interventional navigation system signal, and will not produce adverse effects. At the same time, TC4 material can withstand various conventional sterilization forms of hospitals and departments, such as ultraviolet rays, high temperature and high pressure, low temperature plasma, etc., without causing adverse changes.

[0118] In another embodiment of the fastening structure 23, as Fig.18 and Fig.19 As shown, the buckle body 21 is a cylindrical thin-walled structure as a whole, and the fastening structure 23 includes a plurality of first notches 238 circumferentially arranged at the second end of the buckle body 21, and the second end of the buckle body 21 is divided into a plurality of first fastening pieces 239 distributed at intervals by the plurality of first notches 238;

[0119] The fastening structure 23 further includes a tightening member 240 , which is sleeved on the outer side of the second end of the buckle body 21 and threadedly connected to each first fastening piece 239 to press the first fastening piece 239 tightly against the outer side of the acoustic window portion 105 .

[0120] In this embodiment, the fastening structure 23 is intended to firmly connect the buckle body 21 to the acoustic window portion 105 by means of a thread. Specifically, in this embodiment, a plurality of first notches 238 distributed along the circumferential direction are provided at the second end of the buckle body 21, and the first notches 238 are used to divide the second end of the buckle body 21 into a plurality of first fastening pieces 239 distributed at intervals, and the inner side surfaces of the first fastening pieces 239 can fit on the outer surface of the acoustic window portion 105. When the second end of the buckle body 21 is sleeved to the acoustic window portion 105, the plurality of first fastening pieces 239 surround the outer side of the acoustic window portion 105. In order to enable the first fastening pieces 239 to be pressed and fitted on the outer side of the acoustic window portion 105, the fastening structure 23 in this embodiment further includes a screwing member 240. The screwing member 240 is arranged at the second end of the buckle body 21, and is in a hollow cylindrical structure as a whole, and can be sleeved on the second end of the buckle body 21, that is, sleeved on the outer side of the first fastening piece 239. The screw-on member 240 is threadedly connected to the first fastening piece 239 , thereby pressing the first fastening piece 239 tightly against the outer side of the acoustic window portion 105 , thereby achieving a tight embrace between the buckle body 21 and the acoustic window portion 105 .

[0121] In this embodiment, the screwing member 240 and the plurality of first fastening pieces 239 distributed along the circumferential direction cooperate to apply a certain clamping force to the four sides of the acoustic window portion 105, so that the buckle body 21 can be stably connected to the acoustic window portion 105. When disassembling, it is only necessary to rotate the screwing member 240 in the opposite direction so that the first fastening piece 239 can be separated from the acoustic window portion 105, and then the buckle body 21 can be removed axially.

[0122] In order to enable the tightening member 240 to better press the first fastening sheet 239 against the surface of the acoustic window portion 105 by rotating the thread, as shown in FIG. Fig.18 As shown, in this embodiment, the outer side of the first fastening piece 239 has an external thread 2393 and a smooth first connecting surface 2392, and the external thread 2393 and the first connecting surface 2392 are distributed along the front-to-back direction of the first fastening piece 239;

[0123] The inner side of the tightening member 240 is provided with an internal thread 2401 and a first pressing surface 2402, and the internal thread 2401 and the first pressing surface 2402 are distributed along the front-rear direction of the tightening member 240;

[0124] The internal thread 2401 is threadedly connected to the external thread 2393, and the first clamping surface 2402 is a reduced diameter structure toward the rear end, so that when the tightening member 240 and the first fastening plate 239 are threadedly connected, the first clamping surface 2402 can squeeze the first connecting surface 2392 so that the first fastening plate 239 is pressed tightly against the outer side of the acoustic window portion 105.

[0125] Specifically, it should be noted that the inner diameter of the front end of the screwing member 240 is larger than the diameter of the external thread 2393 on the first fastening piece 239, so that the front end of the screwing member 240 can be axially sleeved on the first fastening piece 239 and pass through the portion of the external thread 2393. The rear end of the screwing member 240 is a first pressing surface 2402 with a reduced diameter structure, and the diameter of the end of the first pressing surface 2402 is less than or equal to the outer diameter of the first fastening piece 239 after being pressed to the acoustic window portion 105, and is larger than the outer diameter of the acoustic window portion 105.

[0126] During assembly, the second end of the buckle body 21 and the tightening member 240 are sleeved together on the acoustic window portion 105, and then the tightening member 240 is rotated toward the front end, so that the first pressing surface 2402 at the rear end moves toward the front end. During the movement, the inner diameter of the portion in contact with the first fastening piece 239 gradually decreases and presses the first fastening piece 239 inward, so that after moving to the set position, the first fastening piece 239 can be pressed to fit tightly against the surface of the acoustic window portion 105, thereby fixing the buckle body 21 to the acoustic window portion 105. During disassembly, the tightening member 240 is rotated in the opposite direction, and the first fastening piece 239 can be separated from the acoustic window portion 105 under the action of its own elastic force.

[0127] In order to prevent the tightening member 240 from over-moving and causing the first fastening plate 239 to apply excessive pressure to the acoustic window portion 105, a first limiting boss is provided on the first fastening plate 239 in this embodiment. The first limiting boss is located at the front end of the external thread 2393. The inner diameter of the front end portion of the internal thread 2401 on the tightening member 240 is larger than the outer diameter of the external thread 2393 and smaller than the outer diameter of the first limiting boss. The tightening member 240 is limited in stroke by the first limiting boss.

[0128] Specifically, when the tightening member 240 rotates and moves until its end abuts against the first limiting boss, the tightening member 240 cannot move further. At this time, the pressure applied by the first clamping surface 2402 to the first fastening plate 239 is limited, thereby avoiding excessive pressure.

[0129] In order to facilitate the rotation of the tightening member 240 , a knurled groove is provided on the outer side of the tightening member 240 in this embodiment.

[0130] In one arrangement of the first slots 238, four first slots 238 are arranged and evenly distributed along the circumference. Of course, three, five or other numbers of first slots 238 may also be arranged according to needs.

[0131] Since the pressure applied by the first fastening sheet 239 to the acoustic window portion 105 requires the first fastening sheet 239 to produce a certain amount of inward deformation, in order to facilitate the first fastening sheet 239 to produce a corresponding deformation, such as Fig.19 As shown, the first fastening plate 239 in this embodiment includes a first sheet 2391 and a second sheet 2394 distributed front to back, the inner surface of the first sheet 2391 and the inner surface of the second sheet 2394 are located on the same circumferential surface, so that they can better fit on the surface of the acoustic window portion 105, the thickness of the first sheet 2391 is less than the thickness of the second sheet 2394, so that the second sheet 2394 can utilize the first sheet 2391 to better produce deformation, and the thicker second sheet 2394 can also ensure the connection strength with the acoustic window portion 105, so the external thread 2393 and the first connecting surface 2392 are both located on the second sheet 2394.

[0132] In one embodiment, the thickness of the second sheet 2394 is greater than 0.6 mm.

[0133] According to another aspect of the utility model, an ultrasound probe assembly is provided, comprising: an intraoperative ultrasound probe 1, an electromagnetic navigation sensor kit 3 and the above-mentioned buckle assembly 21, and the electromagnetic navigation sensor kit 3 is installed to the front end of the intraoperative ultrasound probe 1 through the buckle assembly 21.

[0134] According to another aspect of the utility model, a puncture system is provided, comprising the above-mentioned ultrasound probe assembly, a puncture kit and a navigation device, wherein the puncture kit is provided with another electromagnetic navigation sensor kit;

[0135] The navigation device is configured to extract electromagnetic signals received by two electromagnetic navigation sensor kits, and determine the positional relationship between the puncture kit and the intraoperative ultrasound probe based on the extracted electromagnetic signals.

[0136] The navigation device is also used to display the positional relationship. When an extension line of the puncture kit in the puncture direction intersects with the ultrasonic plane of the ultrasonic probe assembly, at least the intersection is displayed in the ultrasonic image, and / or when the body of the puncture kit or its extension line is coplanar with the ultrasonic plane, the extension line is displayed in the ultrasonic image.

[0137] According to the above display method, after the ultrasound probe assembly enters the patient's body, the doctor can place it on the surface of the organ and scan the target object in combination with the ultrasound image (the target object can be the target portal vein or the target tumor). Then adjust the position and direction of the puncture kit outside the patient's body, aim at the target object through the above-mentioned intersection and / or extension line displayed. The aiming process can simultaneously determine the three positioning points of the body surface needle entry point, the liver surface needle entry point and the target point; finally, perform the puncture action. During the puncture process, keep the intersection point in the ultrasound image on the target object, or the extension line passes through the target object, to ensure that the puncture needle can reach the target object, thereby improving the puncture efficiency.

[0138] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the utility model.

Claims

1. A sensor connection device for an ultrasonic probe, characterized in that: include: A buckle body, wherein the first end of the buckle body is configured as an enclosing structure, the enclosing structure is used to enclose the front end of the intraoperative ultrasound probe, and the buckle body is provided with an avoidance groove for avoiding the emission acoustic window of the intraoperative ultrasound probe; The second end of the buckle body is provided with a fastening structure, and the fastening structure is used to fasten the buckle body to the intraoperative ultrasound probe; The fastening structure includes a plurality of first notches circumferentially arranged at the second end of the buckle body, and the second end of the buckle body is divided into a plurality of first fastening pieces spaced apart by the plurality of first notches; The fastening structure further includes a tightening member, which is sleeved on the outer side of the second end of the buckle body and is threadedly connected with each of the first fastening sheets to press the first fastening sheets tightly against the outer side of the intraoperative ultrasound probe; The mounting piece is arranged on the buckle body, and the mounting piece is provided with a mounting portion for mounting the electromagnetic navigation sensor kit.

2. The sensor connection device according to claim 1, characterized in that: The outer side of the first fastening piece has an external thread and a smooth first connecting surface, and the external thread and the first connecting surface are distributed along the front-to-back direction of the first fastening piece; An internal thread and a first pressing surface are arranged on the inner side of the tightening member, and the internal thread and the first pressing surface are distributed along the front-rear direction of the tightening member; The internal thread is threadedly connected to the external thread, and the first clamping surface is a reduced diameter structure toward the rear end, so that when the tightening member and the first fastening plate are threadedly connected, the first clamping surface can squeeze the first connecting surface so that the first fastening plate is pressed tightly against the outer side of the acoustic window.

3. The sensor connection device according to claim 2, characterized in that: A first limiting boss is provided on the first fastening plate, and the first limiting boss is located at the front end of the external thread. The inner diameter of the front end part of the internal thread on the tightening member is larger than the outer diameter of the external thread, and smaller than the outer diameter of the first limiting boss. The first limiting boss is used to limit the stroke of the tightening member.

4. The sensor connection device according to claim 3, characterized in that: The outer side of the tightening member is provided with a knurled groove.

5. The sensor connection device according to claim 4, characterized in that: The number of the first notches is four and they are evenly distributed along the circumference.

6. The sensor connection device according to claim 2, characterized in that: The first fastening sheet includes a first sheet body and a second sheet body arranged front and back, the inner surface of the first sheet body and the inner surface of the second sheet body are located on the same circumferential surface, and the thickness of the first sheet body is smaller than the thickness of the second sheet body; The external thread and the first connecting surface are both located on the second sheet body.

7. The sensor connection device according to any one of claims 1 to 6, characterized in that: The mounting piece is a slot piece arranged at the inner bottom of the buckle body, the mounting portion is a mounting groove arranged on the slot piece, and the mounting groove is used to install the electromagnetic navigation sensor kit.

8. The sensor connection device according to claim 7, characterized in that: The card slot is arranged as a long strip structure, and a first limiting structure is also arranged at the inner bottom of the buckle body. A second limiting structure assembled with the first limiting structure is arranged on the card slot part, and the first limiting structure and the second limiting structure cooperate to limit the axial movement of the card slot part in the card slot.

9. An ultrasonic probe assembly, characterized in that: include: An intraoperative ultrasound probe, an electromagnetic navigation sensor kit, and a sensor connecting device as described in any one of claims 1 to 8, wherein the electromagnetic navigation sensor kit is installed to the front end of the intraoperative ultrasound probe through the sensor connecting device.

10. A puncture system, characterized in that: It comprises the ultrasound probe assembly, the puncture kit and the navigation device as claimed in claim 9, wherein the puncture kit is provided with another electromagnetic navigation sensor kit; The navigation device is configured to extract electromagnetic signals received by two electromagnetic navigation sensor kits, and determine the positional relationship between the puncture kit and the intraoperative ultrasound probe based on the extracted electromagnetic signals.

11. The puncture system according to claim 10, characterized in that: The navigation device is also used to display the positional relationship. When an extension line of the puncture kit in the puncture direction intersects with the ultrasonic plane of the ultrasonic probe assembly, at least the intersection is displayed in the ultrasonic image, and / or when the body of the puncture kit or its extension line is coplanar with the ultrasonic plane, the extension line is displayed in the ultrasonic image.

Images