Rotary ablation devices and medical equipment

Abstract

The present disclosure provides a rotary ablation device and a medical device. The rotary ablation device is used to achieve radiofrequency ablation and rotary ablation, and includes a driving unit, a handle unit, and a needle body unit. The driving unit is used to provide rotational power for rotary ablation; the handle unit is detachably connected to the driving unit; the needle body unit provides functional areas for radiofrequency ablation and rotary ablation; wherein the needle body unit includes a rotary ablation needle and an ablation needle tube. The distal end of the rotary ablation needle is connected to the handle unit, and the top end is located at the top end of the needle body unit, which is used to achieve rotary ablation; the distal end of the ablation needle tube is connected to the handle unit, and the main body is sleeved with the rotary ablation needle, and there is a first distance H1 between the main body and the outer surface of the rotary ablation needle, and the top end is exposed for achieving radiofrequency ablation. Therefore, the two functions of rotary ablation and radiofrequency ablation can be combined, so that compared with existing medical devices that only have one of the functions, the tissue after ablation treatment can be broken up and sucked out of the body, thereby minimizing the patient's recovery time.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a rotary ablation device and medical equipment. Background Art

[0002] Radiofrequency ablation is a treatment method that is efficient, rapid, uniformly heated, thoroughly thermally coagulated, easy to use, and safe for tumor tissues. It has been widely used in clinical practice for many years. Specifically, when the radio frequency current emitted by the radio frequency energy generator flows through human tissue, the rapid change of the electromagnetic field causes the polarized water molecules in the tissue to move at high speed, generating heat (i.e., endogenous thermal effect), causing the water inside and outside the cells to evaporate, dry, shrink, and fall off, resulting in aseptic necrosis, thereby achieving the purpose of treatment. However, when existing microwave ablation devices are used to eliminate tumors, the ablated tumors will remain in the body and cannot be discharged, which is not conducive to the patient's postoperative recovery. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In order to solve the technical problem in the prior art that radiofrequency ablation devices cannot achieve tumor expulsion after ablation, the present disclosure provides a rotary ablation device and a medical device.

[0005] (II) Technical solution

[0006] One aspect of the present disclosure provides a rotary ablation device for achieving radiofrequency ablation and rotary ablation, which includes a driving unit, a handle unit, and a needle body unit. The driving unit is used to provide rotational power for rotary ablation; the handle unit is detachably connected to the driving unit, serving as the main structure of the rotary ablation device; the needle body unit is correspondingly connected to the handle unit, providing functional areas for radiofrequency ablation and rotary ablation; wherein the needle body unit includes a rotary ablation needle and an ablation needle tube. The distal end of the rotary ablation needle corresponds to the driving unit, is connected to the handle unit, and the top end is located at the top end of the needle body unit, which is used to achieve rotary ablation; the distal end of the ablation needle tube is connected to the handle unit, and the rotary ablation needle is sleeved on the main body, and there is a first distance H1 between the rotary ablation needle and the outer surface of the rotary ablation needle, and the top end is exposed for achieving radiofrequency ablation.

[0007] According to an embodiment of the present disclosure, the driving unit includes a motor housing, a motor and a motor cable. The motor housing forms a receiving space as a supporting structure of the driving unit; the motor is located in the receiving space of the motor housing and is used to provide rotational power for the rotary cutting suction; the motor cable is connected to the motor and is used to connect a power supply and a control circuit to control the rotation of the motor.

[0008] According to an embodiment of the present disclosure, the handle portion includes a support shell, a rotating sleeve and a sliding shaft. The support shell forms a middle space as a support structure of the handle portion; the rotating sleeve is located at the end of the middle space of the support shell of the handle portion, and is connected to the motor shaft of the motor of the driving portion, so that when the motor shaft is driven to rotate by the motor, it can drive the rotating sleeve to rotate together; the sliding sleeve is arranged in the rotating sleeve, and moves forward and backward relative to the rotating sleeve, and when the rotating sleeve rotates, it drives the sliding shaft to rotate together; wherein, the top end of the sliding shaft is connected to the end of the rotary cutting needle, and when the sliding shaft rotates, it drives the rotary cutting needle to rotate together.

[0009] According to an embodiment of the present disclosure, the handle also includes a sliding button. The sliding button corresponds to the slide groove arranged along the length direction of the support shell, the bottom end of the sliding button is engaged with the connecting structure connecting the top end of the sliding shaft and the end of the rotary cutting needle, the connecting structure is driven by the sliding shaft to rotate relative to the sliding button, and when the sliding button is subjected to external force, the sliding button is snapped into the connecting structure to drive the connecting structure to move forward and backward along the slide groove, thereby driving the sliding shaft to move forward and backward relative to the rotating shaft sleeve.

[0010] According to an embodiment of the present disclosure, the handle also includes a three-way tube, a suction tube and an electrode cable. The three-way tube has a central bulging structure, is located in the central space of the support shell, and is sleeved on the rotary cutting needle, and has a second distance H2 between the bottom end of the sliding button in the central space; the suction tube is connected to the three-way tube, and is used to perform suction and discharge operations during the rotary cutting suction process; the electrode cable is connected to the end of the ablation needle tube inside the top end of the handle to provide power for the ablation needle tube to achieve radiofrequency ablation.

[0011] According to an embodiment of the present disclosure, the needle body also includes an insulating tube. The end of the insulating tube is connected to the top of the handle and is sleeved outside the ablation needle tube; wherein the length L3 of the insulating tube relative to the handle is less than the length L2 of the ablation needle tube relative to the handle.

[0012] According to an embodiment of the present disclosure, the rotary cutting needle includes a needle head and a needle rod. The top end of the needle rod is connected to the bottom end of the needle head, which is sleeved in the ablation needle tube, and the bottom end is connected to the top end of the sliding shaft of the handle part, and when the sliding shaft rotates, the needle head is driven to rotate together, and / or when the sliding shaft moves forward and backward relative to the handle part, the needle head is driven to telescope relative to the ablation needle tube.

[0013] According to an embodiment of the present disclosure, the needle includes a needle tip and a spiral body. The needle tip has a triangular pyramid structure; the top of the spiral body is connected to the bottom of the needle tip and has a spiral cutting edge structure; wherein, when the cutting needle is retracted into the ablation needle tube, the needle tip is always exposed outside the top opening of the ablation needle tube.

[0014] According to an embodiment of the present disclosure, the axial projection radius R1 of the needle tip is the same as the axial projection inner diameter R0 of the ablation needle tube; the axial projection radius R2 of the needle rod is smaller than the axial projection inner diameter R0 of the ablation needle tube to form a first distance H1 between the two.

[0015] Another aspect of the present disclosure provides a medical device, which includes the above-mentioned rotary cutting and ablation device.

[0016] (III) Beneficial effects

[0017] The present disclosure provides a rotary ablation device and a medical device. The rotary ablation device is used to achieve radiofrequency ablation and rotary ablation, and includes a driving part, a handle part and a needle body part. The driving part is used to provide rotational power for rotary ablation; the handle part is detachably connected to the driving part, serving as the main structure of the rotary ablation device; the needle body part is correspondingly connected to the handle part, providing a functional area for radiofrequency ablation and rotary ablation; wherein the needle body part includes a rotary ablation needle and an ablation needle tube. The end of the rotary ablation needle corresponds to the driving part, is connected to the handle part, and the top end is located at the top end of the needle body part, which is used to achieve rotary ablation; the end of the ablation needle tube is connected to the handle part, and the main body is sleeved with the rotary ablation needle, and there is a first distance H1 between the rotary ablation needle and the outer surface, and the top end is exposed for achieving radiofrequency ablation. Therefore, the two functions of rotary ablation and radiofrequency ablation can be combined, so that compared with existing medical devices that only have one of the functions, the tissue after ablation treatment can be broken up and sucked out of the body, thereby minimizing the patient's recovery time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic side view of the structure of the rotary cutting ablation device according to an embodiment of the present disclosure is shown in a state where the rotary cutting needle 310 is extended;

[0019] Figure 2 A schematic side view of the structure of the rotary ablation device according to an embodiment of the present disclosure in a state where the rotary ablation needle 310 is retracted is shown;

[0020] Figure 3 Schematically shows the corresponding Figure 1 The structure of the rotary cutting needle 310 extending from the rotary cutting ablation device is a partial side view;

[0021] Figure 4 Schematically shows the corresponding Figure 2 The structure of the needle tip 3111 of the needle 311 of the rotary cutting needle 310 of the rotary cutting ablation device is shown as a partial side view; and

[0022] Figure 5 Schematically shows the corresponding Figure 1 or Figure 2The illustrated projection diagram shows the structural composition of the rotary cutting needle 310 of the rotary cutting ablation device along the axial direction. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of various elements and methods are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0025] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure.

[0026] Moreover, the shapes and sizes of the components in the figures do not reflect the real size and proportion, but only illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference symbols between brackets shall not be constructed as limiting the claims.

[0027] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0028] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element and another element or the order of manufacturing methods. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0029] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and set in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into multiple submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose. Furthermore, in a unit claim that lists several devices, several of these devices may be embodied by the same hardware item.

[0030] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various disclosed aspects, in the above description of the exemplary embodiments of the present disclosure, the various features of the present disclosure are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: the claimed disclosure requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, the disclosed aspects lie in less than all the features of the single embodiment disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present disclosure.

[0031] In order to solve the technical problem in the prior art that radiofrequency ablation devices cannot achieve tumor expulsion after ablation, the present disclosure provides a rotary ablation device and a medical device.

[0032] like Figure 1-Figure 5 As shown, one aspect of the present disclosure provides a rotary ablation device 100 for achieving radiofrequency ablation and rotary ablation, wherein the device includes a driving portion 101 , a handle portion 102 and a needle body portion 103 .

[0033] The driving unit 101 is used to provide rotational power for rotary cutting and suction;

[0034] The handle part 102 is detachably connected to the driving part 101, serving as the main structure of the rotary cutting and ablation device;

[0035] The needle body 103 is correspondingly connected to the handle 102, providing a functional area for radiofrequency ablation and rotary cutting and suction;

[0036] The needle body 103 includes a rotary cutting needle 310 and an ablation needle tube 320 .

[0037] The end of the rotary cutting needle 310 corresponds to the driving part 101, is connected to the handle part 102, and the top end is located at the top end of the needle body part 103, which is used to achieve rotary cutting suction;

[0038] The end of the ablation needle tube 320 is connected to the handle 102 , and the main body is sleeved with the rotary cutting needle 310 , and there is a first distance H1 between the ablation needle tube 320 and the outer surface of the rotary cutting needle 310 , and the top end is exposed for achieving radiofrequency ablation.

[0039] In the disclosed embodiments, radiofrequency ablation mainly utilizes radiofrequency to generate heat in the lesion (such as cancer tissue, etc.) to kill the lesion cells (such as cancer cells, etc.) to achieve lesion ablation. Rotary excision and aspiration mainly achieves the excision of the target tissue by physically controlling the rotation of the needle, and simultaneously performs the aspiration and removal operation.

[0040] The driving part 101 is mainly used to provide rotational power for the rotational action in the rotary cutting operation in the rotary cutting suction, and drives the needle body 103 to realize the rotational operation. The detachable connection between the driving part 101 and the handle part 102 enables the rotary cutting ablation device to directly discard the handle part 102 and the needle body 103 after each radiofrequency ablation and rotary cutting suction operation, thereby realizing the reuse of the driving part 101 without affecting the subsequent surgical operation.

[0041] The handle portion 102, as the main structure of the rotary cutting and ablation device of the embodiment of the present disclosure, can provide the operator (i.e., the user, such as a surgeon) with a hand-holding portion of the rotary cutting and ablation device for easy operation, and can also provide a storage space for the main structural components of the rotary cutting and ablation device.

[0042] The needle body 103, as the part that is in direct contact with the diseased tissue, can be connected to the handle part 102 at one end, so that it generally maintains rigidity relative to the handle part 102, and its position is fixed and it is not easy to deviate or bend relative to the handle part 102, thereby ensuring high stability during actual operation and ensuring the operational accuracy of radiofrequency ablation and rotary cutting and aspiration.

[0043] The needle body 103 mainly implements radiofrequency ablation of the lesion tissue through the ablation needle tube 320, wherein the ablation needle tube 320 can be energized to generate a radiofrequency effect, thereby implementing an ablation operation on the lesion tissue that is in contact or close to it. In addition, the needle body 103 mainly implements rotary cutting of the lesion tissue after the ablation operation through the rotary cutting needle 310 driven by the rotation of the driving unit 101, and simultaneously performs a corresponding suction operation to remove the lesion tissue after rotary cutting in real time.

[0044] The rotary cutting needle 310 is sleeved in the ablation needle tube 320, and its end portion is connected to the structure of the handle portion 102 corresponding to the driving portion 101. The rotary cutting needle 310 can rotate relative to the ablation needle tube 320, while the end portion of the ablation needle tube 320 is fixed in the handle portion 102 so that it cannot rotate relative to the handle portion 102. There is a spacing H1 between the outer surface of the needle shaft of the rotary cutting needle 310 and the inner surface of the ablation needle tube 320, so that the tissue after rotary cutting can be sucked and removed through the gap between the outer surface of the needle shaft of the rotary cutting needle 310 and the inner surface of the ablation needle tube 320 formed by the spacing H1, that is, the tissue after rotary cutting can be sucked out in real time through the gap of the spacing H1.

[0045] In addition, the top end of the ablation needle tube 320 exposed at the handle portion 102 is exposed to the air, so that it can come into contact with the lesion tissue and perform an electric ablation operation.

[0046] Therefore, it is possible to realize the combination of the two functions of rotary cutting and aspiration and radiofrequency ablation, so that compared with the existing medical devices that only have one of the functions, the tissue after ablation treatment can be broken up and sucked out of the body in time, thereby minimizing the patient's operation time and number of operations, and also reducing the patient's recovery time, which is more conducive to the patient's recovery. Among them, the ablated tissue can be broken up by the rotation of the rotary cutting needle 310, and the broken tissue can be sucked out of the patient's body by rotary suction, thereby reducing the probability of complications and shortening the patient's recovery time. Among them, the above-mentioned rotary cutting and ablation device has a simple structure, a reasonable design, and is easy to operate.

[0047] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, the driving unit 101 includes a motor housing 110 , a motor 120 and a motor cable 130 .

[0048] The motor housing 110 forms a receiving space and serves as a supporting structure for the driving unit 101;

[0049] The motor 120 is located in the accommodation space of the motor housing 110 and is used to provide rotational power for rotary cutting suction;

[0050] The motor cable 130 is connected to the motor 120 for connecting to a power source and a control circuit to control the rotation of the motor 120 .

[0051] The motor housing 110 has an opening at one end corresponding to the handle portion 102, which can facilitate the access of the motor shaft of the motor 120 toward the inside of the handle portion 102. A clamping structure is also provided on the end surface of the motor housing 110 corresponding to the opening, which can easily clamp and fix the drive portion 101 and the handle portion 102 together by clamping or other means, thereby realizing a detachable connection between the two. In addition to clamping, the detachable connection between the two can also be realized by fixing means such as screws, so as to achieve the purpose of easy combination and separation of the two, and facilitate the reuse of the drive portion 101.

[0052] The motor 120 is a motor shaft with a rotation output function, which can transmit the rotational power of the motor 120 to the internal structure of the handle part 102 to realize the transmission of the rotation operation, and specifically can be a typical rotary motor.

[0053] The motor cable 130 can be connected to the power supply and control circuit and simultaneously connected to the motor 120 to provide power for the rotation output of the motor 120 and to adjust the rotation parameters of the motor shaft of the motor 120, such as the rotation direction, speed and torque.

[0054] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, the handle portion 102 includes a support shell 210 , a rotating sleeve 220 and a sliding shaft 230 .

[0055] The support shell 210 forms a central space, which serves as a support structure for the handle portion 102;

[0056] The rotating sleeve 220 is located at the end of the middle space of the support shell 210 of the handle portion 102, and is connected to the motor shaft of the motor 120 of the driving portion 101, so that when the motor shaft is driven to rotate by the motor 120, the rotating sleeve 220 can be driven to rotate together;

[0057] The sliding shaft 230 is sleeved in the rotating sleeve 220 and moves forward and backward relative to the rotating sleeve 220. When the rotating sleeve 220 rotates, the sliding shaft 230 is driven to rotate together.

[0058] The top end of the sliding shaft 230 is connected to the bottom end of the rotary cutting needle 310 , and when the sliding shaft 230 rotates, the rotary cutting needle 310 is driven to rotate together.

[0059] The support shell 210 is a long and narrow shell structure, which mainly serves as a receiving structure for the internal structural components of the handle portion 102 and provides a central space for receiving and supporting.

[0060] The rotating sleeve 220 is located at the end of the handle portion 102 , and its end is sleeved on the top of the motor shaft of the motor 120 of the driving portion 101 . When the motor shaft is driven to rotate by the motor 120 , the rotating sleeve 220 can be driven to rotate.

[0061] The sliding shaft 230 is sleeved in the sleeve hole of the rotating sleeve 220, and the cross-sectional shape of the sliding shaft 230 in the radial direction perpendicular to the length direction a of the handle portion 102 is irregular and matches the cross-sectional shape of the sleeve hole of the rotating sleeve 220, so that when the rotating sleeve 220 rotates, the sliding shaft 230 can be driven to rotate together. The sliding shaft 230 is a long cylindrical structure, and can move forward and backward (i.e., in the length direction a) relative to the rotating sleeve 220. That is, the rotating sleeve 220 remains stationary in the length direction a, but the sliding shaft 230 can slide forward and backward relative to the rotating sleeve 220 to achieve retraction and extension in the rotating sleeve 220.

[0062] The end of the needle rod of the rotary cutting needle 310 of the needle body 103 is fixed to the top of the sliding shaft 230, so that it is slidably connected with the sliding shaft 230 by means of the rotating sleeve 220. The rotating sleeve 220 can transmit the rotational motion to the sliding shaft 230, and the sliding shaft 230 can reciprocate back and forth relative to the rotating sleeve 220, that is, the rotary cutting needle 310 is driven to reciprocate back and forth and can rotate, thereby ensuring the realization of the rotary cutting action. In other words, the motor 120 of the driving part 101 can transmit the rotational motion to the rotary cutting needle 310 through the rotating sleeve 220 and the sliding shaft 230 of the handle part 102, and finally the rotary cutting needle 310 realizes the rotational motion.

[0063] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, the handle portion 102 further includes a sliding button 240 .

[0064] The sliding button 240 corresponds to the sliding groove setting along the length direction a on the support shell 210, and the bottom end of the sliding button 240 is embedded in the connecting structure connecting the top end of the sliding shaft 230 and the end of the peeling needle 310. The connecting structure is driven by the sliding shaft 230 to rotate relative to the sliding button 240, and when the sliding button 240 is subjected to external force, the sliding button 240 is stuck in the connecting structure to drive the connecting structure to move forward and backward along the sliding groove, thereby driving the sliding shaft 230 to move forward and backward relative to the rotating sleeve 220.

[0065] There is a connection structure between the end of the rotary cutting needle 310 and the top of the sliding shaft 230. The connection structure can be bonded together by epoxy resin or the like, or can be connected and fixed by pressurized thermosetting plasticization or laser welding to prevent the connection between the rotary cutting needle 310 and the sliding shaft 230 from being disconnected. The connection structure has a cylindrical structure with a concave middle and convex ends in the length direction a. The concave position can correspond to the sliding button 240, so that the sliding button 240 can be embedded in the concave position. At the same time, when the sliding shaft 230 and the rotary cutting needle 310 rotate at the same time, the rotation of the connection structure will not affect the sliding button 240. In other words, the design of the sliding button 240 at the position of the connection structure will not hinder the rotation of the connection structure with the sliding shaft 230.

[0066] The support shell 210 of the handle 102 has a slide groove along the length direction a, and the slide groove can hold the slide button 240, so that the slide button 240 can slide forward and backward along the slide groove in the length direction a. When the operator presses the slide button 240 with his finger and applies external force to the front and back, the concave clamping between the connection structure and the slide button 240 can be used to drive the connection structure to move forward and backward, thereby driving the sliding shaft 230 to extend and retract relative to the rotating sleeve 220, while ensuring that the rotary cutting needle 310 can extend and retract relative to the ablation needle tube 320. The moving distance of the slide button 240 can be equivalent to the length of the slide groove, and specifically can be equal to the maximum distance that the rotary cutting needle can extend and retract relative to the ablation needle tube 320.

[0067] Among them, the sliding button 240 of the needle body 102 is slidably connected to the side wall of the connecting structure corresponding to the sliding shaft 230. Specifically, it can only contact the convex side surfaces on both sides of the concave position of the connecting structure, but not contact the surface of the concave position, thereby ensuring that the sliding button 240 can push the rotary cutting needle 310 to reciprocate without hindering or affecting its rotation.

[0068] In summary, for the rotary cutting operation, the motor shaft of the motor 120 of the driving part 101 is inserted into one side of the rotating sleeve 220 of the handle part 102, which can drive the rotating sleeve 220 to rotate with the motor shaft. The other side of the rotating sleeve 220 is slidably connected to the sliding shaft 230. The rotating sleeve 220 can transmit the rotational motion to the sliding shaft 230. At the same time, the sliding button 240 and the connecting structure of the sliding shaft 230 maintain a sliding connection. Pushing the sliding button 240 back and forth can drive the sliding shaft 230 to move back and forth relative to the rotating sleeve 220; the rotary cutting needle 310 is fixedly connected to the sliding shaft 230, and the ablation needle tube 320 is fixed relative to the handle part 102. Pushing the sliding button 240 back and forth will control the rotary cutting needle 310 to move back and forth relative to the ablation needle tube 320, that is, to extend the rotary cutting edge or retract the rotary cutting edge.

[0069] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, the handle portion 102 further includes a three-way tube 250 , a suction tube 260 , and an electrode cable 270 .

[0070] The three-way pipe 250 has a middle expanded structure, is located in the middle space of the support shell 210, and is sleeved on the rotary cutting needle 310. At the same time, there is a second distance H2 between the three-way pipe 250 and the bottom end of the sliding button 240 in the middle space.

[0071] The suction tube 260 is connected to the three-way tube 250 and is used to perform suction and discharge operations during the rotary cutting suction process;

[0072] The electrode cable 270 is connected to the end of the ablation needle tube 320 inside the top end of the handle portion 102 to provide power for the ablation needle tube 320 to perform radio frequency ablation.

[0073] The middle bulge structure of the three-way tube 250 can be used to temporarily store the lesion fragments sucked out through the gap between the rotary cutting needle 310 and the ablation needle tube 320, and the top of the middle bulge structure is connected to the gap between the rotary cutting needle 310 and the ablation needle tube 320, and the rear end only allows the needle shaft of the rotary cutting needle 320 to pass through, and maintains a seal with the surface of the needle shaft to prevent the lesion fragments and liquid from entering the space where the sliding shaft 230 is located. The seal between the needle shaft and the needle shaft also needs to ensure that the needle shaft can rotate relative to the three-way tube 250, that is, the rotating seal has no leakage.

[0074] In addition, a suction port is provided at the side end of the middle bulge structure of the three-way tube 250 for connecting to the suction tube 260, and the lesion debris passes through the gap between the rotary cutting needle 310 and the ablation needle tube 320, and is sucked out of the patient's body through the three-way tube 250 and the suction tube 260. The three-way tube 250 and the ablation needle tube 320 and the suction tube 260 are well bonded without leakage, and the three-way tube 250 and the rotary cutting needle 310 are rotated and sealed without leakage.

[0075] One end of the suction tube 12 is fixed to the suction outlet of the three-way tube 250, and the other end is connected to the suction pump (not shown). One end of the three-way tube 250 is connected to the ablation needle tube 320, and the other end is rotatably sealed by the rotary cutting needle 310. Therefore, when the suction pump is started, the tumor tissue broken by the rotary cutting edge of the rotary cutting needle 310 can be very conveniently sucked out into the three-way tube 250 and discharged through the suction tube 260.

[0076] The electrode cable 270 serves as a conductor of the ablation needle tube 320, and supplies power for the ablation operation of the ablation needle tube 320. Specifically, the electrode cable 270 is connected to the end of the ablation needle tube 320, and the electrical connection between the two can be achieved by welding. However, by supplying power to the electrode cable 270, the ablation needle tube 320 can be controlled to produce the effect of radiofrequency ablation.

[0077] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the needle body 103 further includes an insulating tube 330 .

[0078] The end of the insulating tube 330 is connected to the top of the handle 102 and is sleeved on the outside of the ablation needle tube 320;

[0079] The length L3 of the insulating tube 330 relative to the handle 102 is smaller than the length L2 of the ablation needle tube 320 relative to the handle.

[0080] In the needle body 103, the length L1 of the rotary cutting needle 310 is the longest, which is directly connected to the top of the sliding shaft 230 of the handle part 102, and the needle head 311 is also exposed outside the ablation needle tube 320; secondly, the length L2 of the ablation needle tube 320 is secondly, and its end can be welded to the front end of the three-way tube 250 of the handle part 102, and the top end can be located outside the insulating tube 330; wherein, the length L3 of the insulating tube 330 is the smallest, and its end can be fixed in the front end of the handle part 102, and covered on the outer surface of the ablation needle tube 320, and the top end of the ablation needle tube 320 is exposed, so that most of the ablation needle tube 320 except the tip is covered by the insulating tube, thereby effectively protecting the operator during the radiofrequency ablation operation (that is, the length of the part of the ablation needle tube 320 located outside the handle part 102 is greater than the length of the part of the insulating tube located outside the handle part 102). Moreover, the tip portion of the ablation needle tube 320 exposed by the insulating tube 330 can effectively perform radiofrequency ablation operations, ensuring accurate ablation.

[0081] The insulating tube 330 may be a transparent insulating tube, which has better aesthetic characteristics and visualization effects, and can protect the ablation operation of the ablation needle tube 320 while providing intuitive feedback on the current state of the ablation needle tube 320 .

[0082] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the rotary cutting needle 310 includes a needle head 311 and a needle shaft 312 .

[0083] The top end of the needle rod 312 is connected to the bottom end of the needle 311, which is sleeved in the ablation needle tube 320. The bottom end is connected to the top end of the sliding shaft 230 of the handle part 102. When the sliding shaft 230 rotates, it drives the needle 311 to rotate together, and / or when the sliding shaft 230 moves forward and backward relative to the handle part 102, it drives the needle 311 to retract relative to the ablation needle tube 320.

[0084] The rotary cutting needle 310 can be an integrated needle structure made of stainless steel, and the needle head 311 has a sharp design, which can facilitate tissue puncture. The rotation and forward and backward telescopic movements of the rotary cutting needle 310 can be performed simultaneously, or can be performed successively (such as telescopic first and then rotation, or rotation first and then telescopic, or telescopic during the rotation process, without specific restrictions). The needle rod 312 is mainly used to transmit the rotation and telescopic movement, thereby driving the needle head 311 to achieve rotation and telescopic movement relative to the ablation needle tube 320.

[0085] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the needle 311 includes a needle tip 3111 and a spiral body 3112 .

[0086] The needle tip 3111 has a triangular pyramid structure;

[0087] The top end of the spiral body 3112 is connected to the bottom end of the needle tip 3111 and has a spiral cutting edge structure;

[0088] When the rotary cutting needle 310 is retracted into the ablation needle tube 320 , the needle tip 3111 is always exposed outside the top opening of the ablation needle tube 320 .

[0089] The needle tip 3111 of the needle 311 of the rotary cutting needle 310 is designed as a triangular pyramid, which can effectively realize the puncture action and can also play a rotary cutting role when rotating.

[0090] The spiral body 3112 serves as the main support of the needle tip 3111, and can also utilize its spiral cutting edge structure to achieve smoother cutting, which is more obvious in the development operation and is helpful for determining the needle insertion position. The spiral cutting edge structure can deliver the cut tissue debris along the spiral cutting edge directly into the gap between the cutting needle 310 and the ablation needle tube 320 along the spiral cutting edge as the rotation action, thereby being more conducive to achieving tissue suction and discharge, and achieving real-time cutting suction.

[0091] In addition, the needle 311 can be used to effectively reduce resistance when inserted into tissue and can be better visualized under ultrasound and CT.

[0092] like Figure 1-Figure 5As shown, according to an embodiment of the present disclosure, the axial projection radius R1 of the needle 311 is the same as the axial projection inner diameter R0 of the ablation needle tube 320; the axial projection radius R2 of the needle rod 312 is smaller than the axial projection inner diameter R0 of the ablation needle tube 320 to form a first distance H1 between the two.

[0093] like Figure 5 As shown, the spiral body 3112 serves as the main supporting part of the needle 311, and the radius dimension of its outer surface relative to the central axis O of the rotary cutting needle 310 can be used as the maximum radius dimension R1 of the needle 311, which is the same as the inner radius dimension R0 of the ablation needle tube 320 in the axial direction, that is, the outer surface of the spiral body 3112 is smoothly combined with the inner wall surface of the ablation needle tube 320, and there is almost no gap. In this way, it is ensured that during the needle insertion process, when the needle 311 is retracted in the ablation needle tube 320, no other liquid or tissue will directly enter the gap between the ablation needle tube 320 and the needle shaft 312 of the rotary cutting needle 310, thereby avoiding blockage, and at the same time ensuring the smoothness of the surface of the needle body 103, and preventing further damage to normal tissues during the needle insertion operation, reducing the impact on the patient.

[0094] In addition, the radius size of the outer wall of the ablation needle tube 320 is the same as the radius size of the inner wall of the insulating tube 330 covering it, that is, the two are smoothly connected with almost no gap, thereby ensuring the smoothness of the surface of the needle body 103, so that the insulating tube 330 can prevent damage to normal tissue and reduce the impact on the patient during the needle insertion operation in cooperation with the ablation needle tube 320.

[0095] In addition, the needle bar 312 (such as Figure 5 There is a distance H1 between the radius dimension R2 of the outer surface (shown by the dotted line) and the inner radius dimension R0 of the inner wall surface of the ablation needle tube 320 (ie, H1 = R0-R2), thereby forming a tissue discharge channel for rotary cutting and suction.

[0096] Based on the above-mentioned rotary cutting and ablation device of the embodiment of the present disclosure, the operator can generally first connect the handle part 102 with the needle body part 103 to the driving part 101 and connect other lines, insert the needle body part 103 into the lesion tissue that needs to be ablated in the patient's body, and perform radiofrequency ablation. After the ablation is completed, the rotary cutting function and the suction function can be used to break up the ablated tissue and suck it out of the patient's body.

[0097] Therefore, the rotary cutting ablation device of the disclosed embodiment can combine the rotary cutting needle with the radiofrequency ablation needle. The ablated tissue can be broken up by the rotation of the rotary cutting needle, and the broken tissue can be discharged from the body by rotation and suction, which can reduce the probability of complications and shorten the patient's recovery time. It utilizes a simple and easy-to-operate structural design to directly eliminate the surgical operations of rotary cutting and suction, greatly reducing the frequency of surgical operations, reducing the surgical operation time, greatly reducing the patient's pain, improving the patient's surgical experience, and greatly shortening the patient's recovery time.

[0098] Another aspect of the present disclosure provides a medical device, which includes the above-mentioned rotary cutting ablation device. The medical device of the present disclosure can be a medical device used in clinical surgical operations, such as a sampling device with a puncture needle, a surgical device with a radio frequency function, etc., without specific limitation.

[0099] So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings.

[0100] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary ablation device for achieving radiofrequency ablation and rotary ablation, wherein: include: A driving unit, used for providing rotational power for the rotary cutting suction; A handle part, detachably connected to the driving part, serving as the main structure of the rotary cutting and ablation device; The needle body is connected to the handle portion and provides the functional area for radiofrequency ablation and rotary cutting and suction; Wherein, the needle body portion comprises: A rotary cutting needle, the end of which corresponds to the driving part, is connected to the handle part, and the top end is located at the top end of the needle body part, and is used to achieve rotary cutting suction; The ablation needle tube has a distal end connected to the handle portion, and the main body is sleeved with the rotary cutting needle, and has a first distance H1 between the distal end and the outer surface of the rotary cutting needle, and the top end is exposed for achieving radiofrequency ablation. The handle portion comprises: A supporting shell, forming a middle space, serving as a supporting structure for the handle portion; A rotating sleeve, located at the end of the middle space of the support shell of the handle part, connected to the motor shaft of the motor of the driving part, so that when the motor shaft is driven to rotate by the motor, the rotating sleeve can be driven to rotate together; A sliding shaft is sleeved in the rotating sleeve and moves forward and backward relative to the rotating sleeve. When the rotating sleeve rotates, the sliding shaft is driven to rotate together; A sliding button is arranged corresponding to the sliding groove on the supporting shell along the length direction, and the bottom end of the sliding button is engaged with the connecting structure connecting the top end of the sliding shaft and the end of the rotary cutting needle, and the connecting structure is driven by the sliding shaft to rotate relative to the sliding button, and when the sliding button is subjected to external force, the sliding button is inserted into the connecting structure to drive the connecting structure to move forward and backward along the sliding groove, thereby driving the sliding shaft to move forward and backward relative to the rotating sleeve; The top end of the sliding shaft is connected to the bottom end of the rotary cutting needle, and when the sliding shaft rotates, the rotary cutting needle is driven to rotate together.

2. The rotary ablation device according to claim 1, wherein: The driving unit comprises: The motor housing forms a receiving space and serves as a supporting structure of the driving unit; A motor, located in the accommodation space of the motor housing, for providing rotational power for the rotary cutting suction; The motor cable is connected to the motor and is used to connect a power source and a control circuit to control the rotation of the motor.

3. The rotary ablation device according to claim 1, wherein: The handle portion further comprises: A three-way pipe having a middle expanded structure, located in the middle space of the support shell, and sleeved on the rotary cutting needle, and having a second distance H2 between the three-way pipe and the bottom end of the sliding button in the middle space; A suction tube, connected to the three-way tube, used to perform suction and discharge operations during the rotary cutting suction process; The electrode cable is connected to the end of the ablation needle tube inside the top end of the handle part to provide power for the ablation needle tube to perform radio frequency ablation.

4. The rotary ablation device according to claim 1, wherein: The needle body also includes: An insulating tube, the end of which is connected to the top of the handle portion and is sleeved outside the ablation needle tube; The length L3 of the insulating tube relative to the handle portion is smaller than the length L2 of the ablation needle tube relative to the handle portion.

5. The rotary ablation device according to claim 1, wherein: The rotary cutting needle comprises: Needles, The needle rod, the top end of which is connected to the end of the needle, is sleeved in the ablation needle tube, and the end is connected to the top end of the sliding shaft of the handle part, and when the sliding shaft rotates, it drives the needle to rotate together, and / or when the sliding shaft moves forward and backward relative to the handle part, it drives the needle to telescope relative to the ablation needle tube.

6. The rotary ablation device according to claim 5, wherein: The needle comprises: The needle tip has a triangular pyramidal structure; The top end of the spiral body is connected to the bottom end of the needle tip and has a spiral cutting edge structure; When the rotary cutting needle is retracted into the ablation needle tube, the needle tip is always exposed outside the top opening of the ablation needle tube.

7. The rotary ablation device according to claim 5, wherein: The axial projection radius R1 of the needle tip is the same as the axial projection inner diameter R0 of the ablation needle tube; The axial projection radius R2 of the needle rod is smaller than the axial projection inner diameter R0 of the ablation needle tube, so as to form a first distance H1 therebetween.

8. A medical device, wherein: A rotary ablation device comprising any one of claims 1-7.

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