Intervention piece and integrated arthroscope system

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an intervention piece and an integrated arthroscope system, which are particularly suitable for joint treatment scenes. An interventional member for use in an arthroscope system, comprising: a hollow cannula portion having a distal end and a proximal end; the base part is fixedly arranged on the window at the far end of the sleeve part; the electrode part is fixedly arranged on one side, far away from the sleeve part, of the base part and is used for selectively generating plasmas in a patient area; the device further comprises a detection part, the detection part is fixedly arranged on the base part, the detection part and the electrode part are arranged on the same side in a spaced mode, and the detection part is arranged towards the electrode part so as to display information of the area where the electrode part is located. Operation efficiency is improved, and operation cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an interventional device and an integrated arthroscopic system, which is particularly suitable for use in joint treatment scenarios. Background Technology

[0002] In modern surgical medicine, bipolar plasma surgical electrodes and arthroscopes are important medical instruments widely used in various minimally invasive surgeries. Taking the posterior cruciate ligament (PCL) reconstruction as an example, the PCL is one of the important stabilizing structures of the knee joint, located inside the joint and connecting the femur and tibia. Its main function is to prevent posterior displacement of the tibia and maintain knee joint stability. Currently, the routine surgical method both domestically and internationally is arthroscopic-assisted posteromedial and posterolateral four-incision PCL reconstruction. This involves inserting an arthroscope and a plasma electrode into multiple incisions. Under arthroscopic monitoring, radiofrequency plasma or a shaver is used to clean the tibial end of the PCL, facilitating subsequent surgical procedures. The plasma electrode has excellent cutting and coagulation capabilities, while the arthroscope is used to observe and manipulate internal joint structures.

[0003] However, in the current technology, the ion electrode knife and arthroscopy are used separately, which often requires multiple wounds to be created on the patient's body surface and multiple doctors to work together, resulting in a complicated surgical procedure, long instrument preparation time, and prolonged patient recovery time. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an interventional device and an integrated arthroscopic system to improve surgical efficiency and reduce surgical costs. This utility model attempts to develop an interventional device and an integrated arthroscopic system to reduce equipment changeover time during surgery, improve surgical efficiency, and reduce hospital costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an interventional device for use in an arthroscopic system, comprising: a hollow cannula having a distal end and a proximal end; a base fixedly disposed on a window at the distal end of the cannula; an electrode portion fixedly disposed on the side of the base away from the cannula, for selectively generating plasma in the lesion area; and further comprising a detection portion fixedly disposed on the base and spaced apart from the electrode portion on the same side, the detection portion being disposed toward the electrode portion to display information about the area where the electrode portion is located.

[0006] As one embodiment of this utility model, it also includes a suction part, which includes a suction port and a suction tube that are connected. The suction tube is partially disposed inside the sleeve part, and the suction port is disposed on the side of the base away from the sleeve part.

[0007] In one embodiment of this utility model, the electrode part includes an electrode plate, an electrode wire, and an electric wire. The electric wire is disposed inside the sleeve part and electrically connected to the electrode plate. The electrode plate is fixedly disposed on the side of the base away from the sleeve part. The electrode wire is fixedly disposed on the electrode plate and electrically connected to the electrode plate to generate plasma. The electrode plate is the suction port, and the electrode plate is provided with a plurality of through holes for the substance to be cleaned to pass through.

[0008] In one embodiment of this utility model, two electrode wires are spaced apart on the electrode sheet, and the polarities of the two electrode wires are opposite; and / or a first cavity is provided in the base, the position of the first cavity corresponding to the position of the suction port, for connecting the suction port and the suction tube.

[0009] As one embodiment of this utility model, it further includes an injection section, which includes an injection tube, a guide, and a spray nozzle; the injection tube is partially disposed within the sleeve section; the spray nozzle is disposed on the side of the base away from the sleeve section; one end of the guide is connected to the injection tube, and the other end is connected to the spray nozzle; the guide is disposed within the base, wherein the base is the guide, and a second cavity for connecting the injection tube and the spray nozzle is provided within the base.

[0010] In one embodiment of this utility model, the injection port is arranged around the periphery of the detection part and is inclined toward the detection part.

[0011] As one embodiment of this utility model, it also includes a fixing plate, which is sealed and fixedly disposed on the side of the base near the sleeve portion. The side of the base near the sleeve portion is provided with an open flow channel, and the base and the fixing plate enclose each other to form the second cavity; wherein the fixing plate is provided with a first hole, and the first hole communicates with the injection tube.

[0012] In one embodiment of this utility model, a mounting ring for mounting a detector is provided on the base, and a second hole is provided on the fixing plate. The second hole is located at a position that matches the mounting ring, wherein the mounting ring is disposed in the second cavity, and the second hole is smaller than the size of the mounting ring so that the detector and the second cavity are isolated from each other; and / or, a flange is provided on the side of the base facing the fixing plate, and the flange is in contact with the side wall portion of the fixing plate.

[0013] In one embodiment of this utility model, the inclination angle between the detection part and the base is 10°, and / or the base is made of ceramic material.

[0014] A second aspect of this invention provides an integrated arthroscopic system for treating a patient area containing a predetermined fluid, comprising a power supply, a display, an operating component, and the interventional component described in the first aspect of this invention; the operating component is communicatively connected to the power supply, a cannula, and an electrode, respectively, for controlling the electrode to selectively generate plasma; the display is communicatively connected to the detection component, for displaying information about the area where the electrode is located; wherein the cannula and the electrode are made of conductive material, the base is insulated from the electrode and the cannula, and portions of the electrode and the cannula are disposed within the patient area; the cannula and the electrode are electrically connected to the power supply and are configured with different polarities to selectively generate plasma within the patient area under the control of the operating component.

[0015] In summary, compared with the prior art, this utility model includes at least one of the following beneficial technical effects: by integrating the electrode part and the probe part on the base, the electrical connection between the electrode part and the probe part can be well realized. When needed, only one incision needs to be formed on the patient's body surface, and multiple operators are not required, which can greatly reduce surgical preparation time and operational difficulty, and improve surgical efficiency and patient recovery time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the interventional device provided in a specific embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the intervention component provided in another specific embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the interventional component provided in a specific embodiment of this utility model;

[0020] Figure 4 This is a perspective view of the base provided in a specific embodiment of the present invention;

[0021] Figure 5 This is a perspective view of the fixing plate provided in a specific embodiment of the present utility model;

[0022] Figure 6 This is a cross-sectional view of the base and fixing plate after they are fixed according to a specific embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100, interventional device; 110, cannula section;

[0025] 120, base; 121, first cavity; 122, second cavity; 123, mounting ring; 124, flange;

[0026] 130, Electrode section; 131, Electrode plate; 132, Electrode wire; 133, Wire;

[0027] 140, Detection unit; 141, Camera; 142, LED light; 143, Detection line;

[0028] 150, Injection section; 151, Injection tube; 152, Guide; 153, Injection port;

[0029] 160, suction section; 161, suction port; 162, suction tube;

[0030] 170, Fixing plate; 171, First hole; 172, Second hole; 180, Outer heat shrink tubing; 190, Top cap;

[0031] A, Inclination angle. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only used for illustration and explanation of the present utility model, and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "up," "down," "left," "right," "front," and "back" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0033] It should also be noted that in the field of interventional medical devices, the proximal end refers to the end closer to the operator, while the distal end refers to the end farther from the operator; the axial direction refers to the direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device, and the radial direction refers to the direction perpendicular to the axial direction. The above definitions are for ease of expression only and should not be construed as limiting the present invention.

[0034] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of embodiments of this utility model. Furthermore, the descriptions of each embodiment in the following embodiments have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0035] This invention first provides a medical device, which is preferably applicable to treatment scenarios involving joint cutting and removal, such as achieving targeted removal of nearby bone or soft tissue.

[0036] Reference Figures 1-6 This is a schematic diagram of an integrated arthroscopic system according to a specific embodiment of the present invention. It includes an interventional component 100 that can be at least partially inserted into the patient's body, an operating component (not shown) that is communicatively connected to the interventional component 100, and a display component (not shown) that is communicatively connected to the interventional component 100. The interventional component 100, the operating component, and the display component can be set separately and independently. They are connected wirelessly, but can also be used via wired means. The present invention does not limit this.

[0037] The interventional device 100 includes a cannula portion 110, a base portion 120, an electrode portion 130, and a probe portion 140. The base portion 120 is fixedly disposed on a window at the distal end of the cannula portion 110, and the electrode portion 130 and the probe portion 140 are fixedly disposed on the same side of the base portion 120. The cannula portion 110 is a hollow tubular component with a distal end and a proximal end. Preferably, the window of the cannula portion 110 is disposed on the side wall near the distal end, such that the base portion 120 is fixedly disposed on the side of the distal end of the cannula, and the electrode portion 130 and the probe portion 140 are fixedly disposed on the side of the base portion 120 away from the cannula. Of course, the window may also be disposed at the distal end of the cannula portion 110, and this invention is not limited thereto. Figure 1 In this specific embodiment, the base 120 is fitted into a window on the distal side wall of the sleeve portion 110 of the sleeve to be fixedly connected to the sleeve portion 110. The electrode portion 130 and the probe portion 140 are both disposed on the side of the base 120 away from the sleeve, that is, on the upper side of the base 120. The advantage of this arrangement is that it can significantly increase the size and area of ​​the base 120, thereby reducing the difficulty of arranging the various components on the base 120 and reducing manufacturing costs.

[0038] The electrode unit 130 is communicatively connected to the operating component, and the display unit and the detector unit 140 are communicatively connected. The electrode unit 130 is configured to interact with other components to generate a high-frequency current, thereby generating plasma. This plasma allows for precise cutting and vaporization of tissue on the patient, while also providing hemostasis. There are numerous existing methods for generating plasma through interaction between the electrode unit 130 and other components; for example, cutting can be performed using monopolar or bipolar radiofrequency plasma, details of which will not be elaborated further. The operating component can control the switching on and off of the electrode and adjust its power, thereby controlling the generated plasma.

[0039] exist Figure 1 In this specific embodiment, the electrode portion 130 is preferably cut by bipolar radio frequency plasma, wherein the sleeve portion 110 is made of conductive material, the electrode portion 130 and the sleeve portion 110 have opposite polarities and are insulatedly connected by the base portion 120, and a set liquid, such as physiological saline, is provided / filled in the patient's body to conduct excitable plasma between the electrode portion 130 and the sleeve portion 110, thereby enabling selective generation of plasma between the electrode portion 130 and the sleeve portion 110, thereby realizing specific use in the patient area, such as cutting or hemostasis.

[0040] Specifically, the electrode section 130 includes a wire 133, an electrode plate 131, and an electrode wire 132 electrically connected to the electrode plate 131. The electrode wire 132 is electrically connected to the wire 133, and the electrode wire 132 can supply current, preferably radio frequency current, to the electrode plate 131 through the wire 133. The electrode wire 132 and the electrode plate 131 are preferably made of materials that can withstand radio frequency current, such as materials containing a dock. For the current source of the electrode plate 131 and the sleeve section 110, it is preferable to electrically connect them respectively via the wire 133 through a power supply unit provided near the end of the sleeve section 110 so that the electrode polarities of the electrode plate 131 and the sleeve section 110 are different. The power supply unit is also communicatively connected to the operating unit so that the power supply unit can be controlled by the operating unit to adjust the current magnitude and switch it on and off. At this time, the wire 133 is sleeved inside the sleeve section 110 and is insulated from the sleeve section 110. Specifically, this can be achieved by providing multiple insulating layers on the outer layer of the wire 110, which will not be described in detail here. In a preferred embodiment, the power supply component and the operating component are integrated at the near end, i.e., the power supply component is part of the operating component, in which case the operating component and the electrode are electrically connected by a cable.

[0041] Therefore, by setting the sleeve portion 110 and the base portion 120 to be opposite polarities and connected to each other through the base portion 120, and by utilizing the predetermined liquid that is injected or already present in the patient's body, plasma can be generated effectively, thereby completing cutting, hemostasis, or other functions.

[0042] Please continue reading Figures 1-3The interventional device 100 also includes an outer heat-shrink tubing 180 made of insulating material. The outer heat-shrink tubing 180 is partially sleeved over the sleeve portion 110 to form a sealed connection with it, and a certain gap exists between it and the window of the sleeve portion 110. This ensures that while the outer heat-shrink tubing 180 is heat-shrinkably connected to the sleeve portion 110, the portion of the sleeve portion 110 covered by the outer heat-shrink tubing does not come into contact with the designated fluid within the patient's body. This limits the area where the sleeve portion 110 contacts the designated fluid within the patient's body, thereby defining the operating area where plasma can be generated. The outer heat-shrink tubing also improves the waterproof and corrosion-resistant capabilities of the covered portion of the sleeve portion 110. Numerous heat-shrink tubing solutions exist in the prior art, and will not be elaborated upon here.

[0043] Similarly, please continue reading Figures 1-3 The interventional device 100 also includes a tip cap 190 made of insulating material. The tip cap 190 is fitted over the distal end of the cannula portion 110 and covers the window area, with a certain gap between it and the distal end of the outer heat-shrink tubing 180. This better defines the area of ​​contact between the cannula portion 110 and the designated fluid in the patient's body, while also improving the waterproof and corrosion-resistant capabilities of the covered portion of the cannula portion 110. Numerous designs for the tip cap 190 exist in the prior art, and will not be detailed here.

[0044] Please continue reading Figure 1 The detector 140 and electrode 130 are disposed on the base 120 without interference. The base 120 has a mounting ring 123 for mounting the detector 140. The detector 140 is tilted towards the electrode 130, allowing it to detect the area where the electrode 130 is located and send the detected information to a display device to show information about the area where the electrode 130 is located within the patient's body. Figure 1 In this specific embodiment, the detector 140 is disposed at the distal end of the electrode 130, and the mounting ring 123 is tilted toward the electrode 130, thereby causing the detector 140 to tilt toward the electrode 130. It is naturally understood that, in addition to the detector 140 being disposed at the distal end of the electrode 130, the electrode 130 can also be disposed at the distal end of the detector 140, which can be freely configured according to the actual needs of the scenario.

[0045] It is understood that the tilt angle A of the probe 140, i.e., the angle formed by the probe 140 in the near and far directions, is not limited in this invention, as long as it can detect the area where the electrode 130 is located. It depends on the distance between the probe 140 and the electrode 130; the closer the probe 140 is to the electrode 130, the smaller the tilt angle A; the farther the distance between the probe 140 and the electrode 130, the larger the tilt angle A. Preferably, the tilt angle A of the probe 140 is 5°-15°, preferably 10°. The advantage of using 10° is that it allows for a better view of the electrode 130 on the side away from the base 120, approximately 3mm away, thus enabling better completion of the surgical procedure.

[0046] It should be noted that the probe 140 is preferably an arthroscope with a camera 141. The advantage of choosing this is that the detected images are clearer and more direct, and have better stability. The camera is preferably an OmniVision OV6946, which has a high degree of miniaturization, can be well adapted to interventional devices, and can be better applied to joint treatment.

[0047] Therefore, by integrating the electrode section 130 and the probe section 140 on the base 120, the electrical connection between the electrode section 130 and the probe section 140 can be effectively achieved. When needed, only one incision needs to be made on the patient's body surface, and multiple operators are not required, which can significantly reduce surgical preparation time and operational difficulty, and improve surgical efficiency and patient recovery time.

[0048] However, during the research and development process, the inventors discovered that in existing medical scenarios, in addition to using the electrode unit 130 and the probe unit 140, doctors also need to inject a pre-defined medium, such as saline solution, into the patient's body where the electrode unit 130 is located. Injecting saline solution causes the patient's area to expand locally, enabling more precise operation and observation. Furthermore, to better achieve plasma generation through the interaction between the electrode unit 130 and other components for subsequent cutting, hemostasis, and other functions, a pre-defined liquid also needs to be injected into the patient's body to facilitate plasma generation. However, injecting a pre-defined liquid, such as saline solution, into the patient's body often requires an incision, leading to low surgical efficiency and a poor patient experience. Additionally, considering that some tissue might obstruct the field of view of the probe unit 140, resulting in poor visibility, the inventors attempted to further improve the solution.

[0049] Please see Figures 1-6The interventional device 100 also includes an injection section 150 and an aspiration section 160. The injection section 150 can inject saline solution into the patient area, or other predetermined liquids that can expand the patient area and enable plasma excitation between the electrode section 130 and the cannula section 110. The aspiration section 160 can aspirate substances to be cleaned from the patient area, such as free tissue.

[0050] The suction unit 160 can suction out the material to be cleaned from the patient area. The suction unit 160 includes a suction port 161 and a suction tube 162. The suction tube 162 is partially disposed inside the sleeve portion 110 and communicates with the suction port 161. The suction port 161 is preferably integrated with the electrode plate 131 of the electrode portion 130. That is, the electrode plate 131 is provided with multiple through holes to facilitate the passage of the material to be cleaned. The suction tube 162 is disposed below the electrode plate 131 and communicates with the suction port 161, so that the material to be cleaned enters the suction tube 162 from the suction port 161 and is then transported by the suction tube 162 to a specific position or component near the end of the sleeve portion 110. The advantage of this arrangement is that after the electrode wire 132 of the electrode portion 130 has completed the operation on the patient area, such as after cutting, the suction unit 160 can complete the cleaning of the material to be cleaned through the shortest path, minimizing the amount of material to be cleaned in the patient's body.

[0051] It is understandable that, since the electrode sheet 131 is fixedly mounted on the base 120, and the base 120 itself has a certain thickness and is made of an insulating material, such as ceramic material, the base 120 is provided with a first cavity 121 in the area corresponding to the suction port 161. The suction tube 162 is sealed and connected to the first cavity 121, and thus the first cavity 121 is used to achieve communication with the suction port 161. That is, one end of the first cavity 121 is connected to the suction port 161, and the other end is connected to the suction tube 162.

[0052] The injection unit 150 can inject a predetermined liquid, such as saline solution, into the patient area. Alternatively, it can inject other predetermined liquids that can expand the patient area and stimulate plasma. The injection unit 150 includes an injection tube 151, a guide 152, and a nozzle 153. The injection tube 151 is fitted inside the sleeve portion 110 and is insulated from the sleeve portion 110. It does not interfere with the suction tube 162 of the suction unit 160 and the wire 133 of the electrode portion 130, and they are all insulated from each other within the sleeve 110. The proximal end of the injection tube 151 is connected to a storage container (not shown) containing saline solution, and the distal end is connected to the guide 152. The guide 152 guides the saline solution in the injection tube 151 to flow through a predetermined channel to the nozzle 153, allowing the saline solution to be injected into the patient area through the nozzle 153. This results in the electrode portion 130 and the sleeve portion 110 being enveloped in saline solution within the patient area. The guide 152 is fixedly mounted on the base 120, and the injection port 153 is disposed on the surface of the base 120 and on one side of the electrode part 130 and the detector part 140.

[0053] Therefore, by setting up the injection section 150 and the aspiration section 160, the arthroscopic system can be further integrated, allowing the injection section 150 and the aspiration section 160 to be integrated as well, thereby further improving surgical efficiency and reducing trauma to the patient.

[0054] However, as mentioned above, the inventors considered that the integrated detection unit 140 was unable to observe the diseased area due to obstruction by the cleaning material in the diseased area, and therefore attempted to make further improvements.

[0055] Please see Figure 1 , Figure 4 The nozzle 153 is disposed around the periphery of the detection part 140 and is inclined toward the nozzle 153. Preferably, multiple nozzles 153 are disposed circumferentially around the detection part 140. The two ends of the guide 152 are respectively connected to the nozzle 153 and the injection tube 151 to guide the saline in the injection tube 151 to the nozzle 153, and then flow out to the patient area.

[0056] Therefore, by circumferentially surrounding the detection unit 140 with the nozzle 153, when a predetermined liquid is injected into the nozzle 153 through the injection pipe 151, the liquid is sprayed onto the affected area through the nozzle 153, which can wash away any material that has or may be obstructing the field of view of the detection unit 140, thus ensuring a better field of view. Simultaneously, by positioning the nozzle 153 towards the detection unit 140, the field of view in front of the detection unit 140 can be better guaranteed.

[0057] Please continue reading Figures 1-6The guide 152 is fixedly mounted on the base 120, preferably integrally formed with the base 120. The guide 152 has a second cavity 122 for connecting the injection section 150 and the injection port 153. The connection position of the second cavity 122 with the injection section 150 does not interfere with the installation position where the probe 140 is placed. The intervention component 100 also includes a fixing plate 170. The base 120 has a flow channel on the side facing away from the injection port 153 that guides the flow of physiological saline. The fixing plate 170 is fixedly sealed to the base 120 to form the flow channel into the second cavity 122, such that one end of the second cavity 122 is connected to the injection tube 151 and the other end is connected to the injection port 153.

[0058] The fixing plate 170 is provided with a first hole 171 and a second hole 172 that are not interfering with each other. The first hole 171 is located at the position corresponding to the installation of the injection tube 151, so that the fixing plate 170 can be sealed and connected to the injection tube 151, thereby realizing the connection between the injection tube 151 and the second cavity 122. The second hole 172 is located in the position corresponding to the mounting ring 123, and the size of the second hole 172 is smaller than that of the mounting ring 123, so that the fixing plate 170 is sealed and fixed to the mounting ring 123, while leaving the second hole 172 to facilitate the installation of the detection unit 140.

[0059] On the one hand, considering that the second cavity 122 is mainly used to contain saline solution, i.e., liquid needs to flow through it, while the mounting ring 123 needs to house the probe 140, but the probe 140 itself needs to be powered by electricity, and considering that the device itself is an interventional medical device with high safety requirements, it is necessary to strictly ensure the sealing and isolation between the probe 140 and the second cavity 122 to achieve dry and wet separation. In this way, it can be ensured that the second cavity 122 and the probe 140 in the mounting ring 123 do not interfere with each other, achieving dry and wet separation and ensuring safety. The reserved second hole 172 also increases the installation flexibility for the subsequent arrangement of the probe 140.

[0060] For example, in Figure 1 , Figure 3 In this specific embodiment, the detection unit 140 includes a camera 141, an LED light 142, and a detection line 143. The LED light 142 is disposed around the camera 141 to provide supplementary lighting. The detection line 143 is electrically connected to the LED light 142 and the camera 141 to provide them with power. The power supply component of the detection line 143 is located at the proximal end of the sleeve portion 110. In this case, the detection line 143 needs to pass through the base portion 120 and the sleeve portion 110 to reach the proximal end. By pre-reserving the second hole 172, this purpose can be well achieved and interference with the second cavity 122 can be avoided.

[0061] On the other hand, the advantage of sealing and fixing the fixing plate 170 and the base 120 to form the second cavity 122 is that, in the actual production and manufacturing process, the base 120 is mainly made of ceramic material. If the second cavity 122 is formed directly as a whole, even if the base 120 and the fixing plate 170 are set as a whole, the requirements for the existing ceramic mold are high, the manufacturing difficulty is high, resulting in high overall manufacturing cost and high defect rate, making it difficult to carry out large-scale application and mass production promotion.

[0062] The present invention provides a solution by sealing and fixing the fixing plate 170 and the base 120 to form the second cavity 122, which can effectively reduce the manufacturing difficulty caused by integrally forming the second cavity 122, greatly improve manufacturing efficiency, and thus better reduce manufacturing costs, making it easier for large-scale promotion and application.

[0063] Furthermore, the base 120 is also provided with a flange 124, which is located on the side of the base 120 facing the fixing plate 170 and matches a portion of the sidewall of the fixing plate 170 to achieve fixation between the fixing plate 170 and the base 120. The advantage of this arrangement is that it enables better sealing and fixation between the base 120 and the fixing plate 170. Simultaneously, since the flange 124 seals against a portion of the sidewall of the fixing plate 170, it also provides a guiding function, facilitating the installation of the fixing plate 170 and the base 120 and improving installation efficiency.

[0064] It is understandable that there are many solutions in the prior art for fixing the fixing plate 170 and the base 120. For example, adhesive sealing can be achieved by means of adhesives or adhesive parts, mechanical sealing can be achieved by means of mechanical mechanisms such as tenons and mortises, or other solutions in the prior art that can achieve adhesive sealing, which will not be elaborated here.

[0065] The present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

[0066] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0067] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0068] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

Claims

1. An interventional device for use in an arthroscopic system, characterized in that, include: A hollow cannula with a distal and proximal end; The base is fixedly installed on the window at the far end of the sleeve section; An electrode portion is fixedly disposed on the side of the base away from the sleeve portion, for selectively generating plasma in the lesion area; in It also includes a detection unit, which is fixedly disposed on the base and spaced apart from the electrode unit on the same side. The detection unit is positioned toward the electrode unit to display information about the area where the electrode unit is located.

2. The interventional device according to claim 1, characterized in that, It also includes a suction part, which includes a suction port and a suction tube that are connected. The suction tube is partially disposed inside the sleeve part, and the suction port is disposed on the side of the base away from the sleeve part.

3. The interventional device according to claim 2, characterized in that, The electrode portion includes an electrode plate, an electrode wire, and an electrical wire. The electrical wire portion is disposed within the sleeve portion and electrically connected to the electrode plate. The electrode plate is fixedly disposed on the base portion away from the sleeve portion. The electrode wire is fixedly disposed on the electrode plate and electrically connected to the electrode plate to generate plasma. The electrode plate serves as the suction port, and it has multiple through holes for the substance to be cleaned to pass through.

4. The interventional device according to claim 3, characterized in that, Two electrode wires are spaced apart on the electrode plate, and the two electrode wires have opposite polarities; and / or The base is provided with a first cavity, the position of which corresponds to the position of the suction port, and is used to connect the suction port and the suction tube.

5. The interventional device according to any one of claims 1-4, characterized in that, It also includes an injection section, which includes an injection tube, a guide, and a jet nozzle; The injection tube portion is disposed within the sleeve portion; the injection port is disposed on the side of the base away from the sleeve portion; one end of the guide is connected to the injection tube, and the other end is connected to the injection port; the guide is disposed within the base, wherein... The base is the guide, and a second cavity is provided inside the base for connecting the injection tube and the jet port.

6. The interventional device according to claim 5, characterized in that, The injection nozzle is arranged around the periphery of the detection part and is inclined toward the detection part.

7. The interventional device according to claim 5, characterized in that, It also includes a fixing plate, which is sealed and fixedly disposed on the side of the base near the sleeve portion. The side of the base near the sleeve portion is provided with an open flow channel. The base and the fixing plate enclose each other to form the second cavity. in The fixing plate is provided with a first hole, which is connected to the injection tube.

8. The interventional device according to claim 7, characterized in that, The base is provided with a mounting ring for mounting a detector, and the fixing plate is provided with a second hole, which is located at a position that matches the mounting ring. The mounting ring is disposed in the second cavity, and the second hole is smaller than the size of the mounting ring, so as to isolate the probe and the second cavity from each other. And / or, the base is provided with a flange on the side facing the fixing plate, and the flange is in contact with the side wall portion of the fixing plate.

9. The interventional device according to claim 1, characterized in that, The angle of inclination between the probe and the base is 10°, and / or The base is made of ceramic material.

10. An integrated arthroscopic system for treating a lesion area containing a predetermined fluid, characterized in that, Includes a power supply unit, a display unit, an operating unit, and an intervention unit as described in any one of claims 1-9; The operating component is communicatively connected to the power supply component, the sleeve portion, and the electrode portion, respectively, and is used to control the electrode portion to selectively generate plasma. The display component is communicatively connected to the detection portion and is used to display information about the area where the electrode portion is located. in The cannula and the electrode are made of conductive material, the base is insulated and connected to the electrode and the cannula, and portions of the electrode and the cannula are disposed within the lesion area; The sleeve portion and the electrode portion are electrically connected to the power supply component and are configured with different polarities to selectively generate plasma in the lesion area under the control of the operating component.

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