Ablation surgical device

Abstract

The invention relates to an ablation surgical device. The ablation operation device comprises an obturator, an endoscope, a laser optical fiber and a sheathing canal, wherein the endoscope is provided with a through instrument channel; the laser optical fiber can penetrate through the instrument channel, the far end of the laser optical fiber penetrates out of the far end of the instrument channel and forms an ablation head used for ablation, and the near end of the laser optical fiber penetrates out of the near end of the instrument channel and is used for being connected to laser generating equipment; the sheathing canal is provided with a through main channel, and the main channel can selectively penetrate into the obturator or the endoscope; when the obturator is arranged in the main channel in a penetrating mode, the far end of the obturator penetrates out of the far end of the main channel and blocks the main channel. When the endoscope penetrates through the main channel, the far end of the endoscope penetrates out of the far end of the main channel, and the endoscope is used for obtaining an operation image. According to the ablation operation device, the time consumed for instrument assembly before an operation is reduced, meanwhile, the operation difficulty of the operation and the risk of distraction of the operation are reduced, and therefore the operation efficiency and safety are improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to ablation surgical devices. Background Technology

[0002] With the development of surgical techniques, minimally invasive surgery has become the mainstream and consensus of current surgical procedures. For urological surgeries such as prostatectomy and bladder tumor resection, the commonly used surgical method is to use an electrosurgical excision device to ionize and remove the hyperplastic or tumor tissue.

[0003] However, in related technologies, the electrosurgical knife has a complex structure and requires the use of many components, which leads to long preoperative assembly time and complex intraoperative operation, increasing the difficulty and duration of the operation. Summary of the Invention

[0004] Therefore, it is necessary to provide an ablation surgical device to address the issues of reducing surgical difficulty and improving surgical efficiency.

[0005] In a first aspect, this application provides an ablation surgical device, comprising:

[0006] Closed-hole device;

[0007] An endoscope having a through-through instrument channel;

[0008] A laser fiber is provided, which can be inserted into the instrument channel, with the distal end of the laser fiber extending out of the distal end of the instrument channel to form an ablation head for ablation, and the proximal end of the laser fiber extending out of the proximal end of the instrument channel for connection to a laser generating device.

[0009] The sheath has a through main channel that can selectively insert the obturator or the endoscope.

[0010] Specifically, when the obturator is inserted into the main channel, the distal end of the obturator extends out of the distal end of the main channel and blocks the main channel; when the endoscope is inserted into the main channel, the distal end of the endoscope extends out of the distal end of the main channel to obtain surgical images.

[0011] The technical solution will be further explained below:

[0012] In one embodiment, the sheath includes a tube body and a seat body, the main channel extends through both ends of the tube body, the seat body is connected to one end of the tube body, the seat body is provided with an instrument inlet extending through both ends of the seat body, the instrument inlet is connected to the main channel, and the diameter of the instrument inlet gradually decreases along the direction close to the tube body, so that the obturator or the endoscope can be inserted into the main channel through the instrument inlet.

[0013] In one embodiment, the closure device includes a rod, a handle connected to one end of the rod, and a guide head connected to the other end of the rod. When the closure device is inserted into the main channel, the rod is located in the main channel, at least a portion of the guide head extends out of the main channel away from the seat and blocks the main channel, and at least a portion of the handle extends out of the device inlet away from the tube.

[0014] In one embodiment, one of the seat and the handle is provided with a limiting protrusion, and the other is provided with a limiting groove. After the end-closing device is inserted into the sheath, the end-closing device and the sheath rotate relative to each other, so that the limiting protrusion can be engaged in the limiting groove to lock the end-closing device in the sheath in the axial direction of the sheath; or the limiting protrusion can be disengaged from the limiting groove to release the locking of the end-closing device.

[0015] In one embodiment, the tube body and the base body are coaxially arranged, the limiting slot is formed in the base body, the limiting protrusion is provided in the handle, the limiting slot includes an inlet / outlet slot and a locking slot, the inlet / outlet slot extends along the axial direction of the base body and passes through one end of the base body away from the tube body, the locking slot communicates with the inlet / outlet slot and extends along the circumference of the base body, and the limiting protrusion can enter or exit the locking slot through the inlet / outlet slot.

[0016] In one embodiment, one of the rod and the handle is provided with a first positioning groove, and the other is provided with a first positioning protrusion, the first positioning protrusion being inserted into the first positioning groove; and / or

[0017] One of the rod body and the guide head is provided with a second positioning groove, and the other is provided with a second positioning protrusion, the second positioning protrusion being inserted into the second positioning groove.

[0018] In one embodiment, the rod is made of metal; and / or the handle and the guide head are made of plastic.

[0019] In one embodiment, the end of the guide head facing away from the rod body is an arc surface; and / or,

[0020] The diameter of the guide head gradually decreases in the direction away from the rod body; and / or,

[0021] The guide head has an extended protrusion on its side wall, and the height of the extended protrusion from the guide head gradually decreases along the direction away from the rod body.

[0022] In one embodiment, the tube body includes an inner tube and an outer tube. The lumen of the inner tube forms the main channel. The outer tube is sleeved outside the inner tube. An injection channel is formed between the outer tube and the inner tube. An outlet hole communicating with the injection channel is formed on the side wall of the outer tube. The seat body is also provided with an inlet and a return port. The inlet communicates with the injection channel, and the return port communicates with the main channel.

[0023] In one embodiment, the endoscope includes an insertion tube, a tip connected to one end of the insertion tube, and an operating part connected to the other end of the insertion tube. The instrument channel extends through the operating part, the insertion tube, and the tip. The tip is provided with a lens module for acquiring surgical images, and the operating part is provided with a sealing cap for sealing the instrument channel.

[0024] The distal end of the laser fiber extends out of the distal end to form the ablation head, and the proximal end of the laser fiber extends out of the sealing cap;

[0025] When the endoscope is inserted into the main channel, at least a portion of the tip protrudes from the distal end of the main channel, and at least a portion of the operating part protrudes from the proximal end of the main channel.

[0026] In the aforementioned ablation surgical device, the obturator and endoscope are sequentially inserted into the main channel of the sheath, enabling the implantation of both the sheath and the endoscope. Simultaneously, a laser fiber is inserted into the instrument channel of the endoscope, with its distal end extending beyond the instrument channel to form an ablation head. The laser is then transmitted via the fiber to the lesion area for ablation and cutting of the diseased tissue. During this process, the endoscope acquires real-time images of the surgical area to ensure accurate removal of the diseased tissue. Compared to traditional electrosurgical knives that use ionization, this ablation surgical device utilizes laser ablation to cut the diseased tissue, avoiding the ionization risks associated with electrosurgical knives. Furthermore, it eliminates the need for electrosurgical knives, electrodes, and operating handles, significantly reducing preoperative instrument assembly time, surgical difficulty, and the risk of distraction, thereby improving surgical efficiency and safety. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the assembly of the obturator and sheath of an ablation surgical device according to one embodiment.

[0031] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the closure device and the sheath.

[0032] Figure 3 This is a schematic diagram of the assembly of the laser fiber, endoscope, and sheath of an ablation surgical device according to one embodiment.

[0033] Figure 4 for Figure 3 The image shows a cross-sectional view of the endoscope and sheath.

[0034] Figure 5 This is a schematic diagram of the sheath structure of one embodiment.

[0035] Figure 6 for Figure 5 The image shows a magnified view of the sheath at point A.

[0036] Figure 7 This is a schematic diagram of the structure of a closed-hole device according to an embodiment.

[0037] Figure 8 for Figure 1 The cross-sectional view of the closed-hole device shown.

[0038] Figure 9 for Figure 8 The enlarged view of the closure device shown in section B.

[0039] Figure 10 for Figure 8 The enlarged view of the closure device shown in section C.

[0040] Figure 11 This is a schematic diagram of the guide head of a gate closer according to another embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10. Sheath; 11. Tube body; 111. Main channel; 112. Outer tube; 1121. Liquid outlet; 113. Inner tube; 114. Injection channel; 12. Seat; 121. Instrument inlet; 122. Limiting slot; 1221. Inlet / outlet groove; 1222. Snap-fit ​​groove; 13. Liquid inlet; 14. Liquid return port; 20. Closer; 21. Rod; 211. First positioning groove; 212. Second positioning groove; 22. Guide head; 221. Expansion protrusion; 222. Second positioning protrusion; 23. Handle; 231. Limiting protrusion; 232. First positioning protrusion; 30. Endoscope; 31. Insertion tube; 311. Instrument channel; 32. Tip; 33. Operating part; 331. Luer connector; 332. Sealing cap; 40. Laser fiber; 41. Ablation head. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] As described in the background section, current urological surgeries such as prostatectomy and bladder tumor resection typically use an electrosurgical resection device to ionize and remove hyperplastic or tumor tissue. However, in addition to components such as the obturator, sheath, and endoscope, the electrosurgical resection device also includes components such as the operating handle, puncture needle, and electrodes. The large number of components leads to time-consuming preoperative assembly and complex intraoperative operation, increasing the difficulty and duration of the surgery.

[0050] Based on this, one embodiment of this application provides an ablation surgical device that can be applied to urological surgeries such as prostatectomy and bladder tumor resection, and can also be applied to other ablation surgeries, without limitation. It is worth noting that in the following embodiments, "proximal end" refers to the end closer to the surgeon, and "distal end" refers to the end farther away from the surgeon.

[0051] See Figures 1 to 4One embodiment of the ablation surgical device includes an obturator 20, an endoscope 30, a laser fiber 40, and a sheath 10.

[0052] See Figure 1 as well as Figure 2 The obturator 20 is used to guide and seal the sheath 10 during implantation.

[0053] See Figure 4 The endoscope 30 is provided with instrument channels 311 running through both ends of itself. The endoscope 30 is used to acquire surgical images during the operation.

[0054] See Figure 3 as well as Figure 4 The laser fiber 40 can be inserted into the instrument channel 311, with its distal end extending out of the instrument channel 311 to form an ablation head 41 for ablation. The proximal end of the laser fiber 40 extends out of the instrument channel 311 and is used to connect to a laser generating device (not shown). Specifically, the laser generating device generates a laser, which is transmitted along the laser fiber 40 to the ablation head 41 and irradiates the lesion area to heat and ablate the lesion, causing the proliferative tissue or tumor tissue in the lesion area to be vaporized and removed. The laser generated by the laser generating device can be a 1470 nm laser. The laser fiber 40 can be any laser fiber, such as a holmium laser fiber or a thulium laser fiber, and is not limited thereto.

[0055] See Figure 5 The sheath 10 has a main channel 111 extending through both ends of itself, through which the obturator 20 or endoscope 30 can be selectively inserted; specifically, such as Figure 1 as well as Figure 2 As shown, when the obturator 20 is inserted into the main channel 111, the distal end of the obturator 20 extends beyond the distal end of the main channel 111 and blocks the main channel 111; as Figure 3 as well as Figure 4 As shown, when the endoscope 30 is inserted into the main channel 111, the distal end of the endoscope 30 extends out of the distal end of the main channel 111 to obtain surgical images.

[0056] Specifically, taking its application in transurethral resection of prostatic hyperplasia or resection of bladder tumors as examples, such as Figure 1 as well as Figure 2As shown, when using the above-mentioned ablation surgical device, the obturator 20 is first inserted into the main channel 111 of the sheath 10, so that the distal end of the obturator 20 protrudes from the distal end of the main channel 111 and blocks the main channel 111. Then, the sheath 10 and the obturator 20 are inserted into the urethra as a whole. During this process, the expansion effect of the distal end of the obturator 20 can expand the urethra to guide the sheath 10 to pass through the urethra smoothly and prevent the sheath 10 from scratching the urethra. After the distal end of the sheath 10 is implanted into the lesion area, the obturator 20 is pulled out and the sheath 10 is left in the urethra.

[0057] like Figure 3 as well as Figure 4 As shown, the endoscope 30 is then inserted into the main channel 111 of the sheath 10, with the distal end of the endoscope 30 extending beyond the distal end of the main channel 111. Next, the laser fiber 40 is inserted into the instrument channel 311 of the endoscope 30, with the distal end of the laser fiber 40 extending beyond the distal end of the instrument channel 311. The proximal end of the laser fiber 40 is then connected to the laser generating device. This completes the assembly of the ablation surgical device.

[0058] During the surgery, the laser generating device outputs a laser, which is transmitted along the laser fiber 40 to the lesion area to heat and ablate the lesion area, thereby vaporizing and removing the proliferating or tumor tissue in the lesion area. During this process, the endoscope 30 acquires images of the surgical area in real time to ensure that the doctor can accurately remove the proliferating or tumor tissue.

[0059] In the aforementioned ablation surgical device, the obturator 20 and endoscope 30 are sequentially inserted into the main channel 111 of the sheath 10, thereby enabling the implantation of both the sheath 10 and the endoscope 30. Simultaneously, a laser fiber 40 is inserted into the instrument channel 311 of the endoscope 30, with its distal end extending beyond the instrument channel 311 to form an ablation head 41 for ablation. The laser fiber 40 transmits the laser to the lesion area, allowing for ablation and cutting of the diseased tissue. During this process, the endoscope 30 acquires real-time images of the surgical area to ensure accurate removal of the diseased tissue by the surgeon. Compared to traditional electrosurgical knives that use ionization cutting, the ablation surgical device of this application utilizes laser to ablate and cut the diseased tissue, avoiding the ionization risks associated with electrosurgical knives. Furthermore, it eliminates the need for electrosurgical knives, electrodes, and operating handles, significantly reducing preoperative instrument assembly time, surgical difficulty, and the risk of distraction, thereby improving surgical efficiency and safety.

[0060] See Figure 4Optionally, in some embodiments, the endoscope 30 includes an insertion tube 31, a tip portion 32 connected to one end of the insertion tube 31, and an operating portion 33 connected to the other end of the insertion tube 31. An instrument channel 311 extends through the operating portion 33, the insertion tube 31, and the tip portion 32. When the endoscope 30 is inserted into the main channel 111, at least a portion of the tip portion 32 extends beyond the distal end of the main channel 111, and at least a portion of the operating portion 33 extends beyond the proximal end of the main channel 111.

[0061] Furthermore, the tip 32 is provided with a lens module (not shown) for acquiring surgical images, and the operating part 33 is provided with a sealing cap 332 for sealing the instrument channel 311. The laser fiber 40 extends from the operating part 33 into the instrument channel 311, and the distal end of the laser fiber 40 extends out of the tip 32 to form an ablation head 41. Thus, during the operation, the lens module in the tip 32 can acquire images of the ablation head 41, ensuring that the ablation head 41 can accurately cut the lesion tissue.

[0062] Optionally, in some embodiments, the tip 32 may also be provided with an illumination component to ensure that the lens module can obtain a clear field of view.

[0063] Furthermore, the proximal end of the laser fiber 40 extends through the sealing cap 332, which can be a silicone cap. The sealing cap 332 is used to seal the instrument channel 311 and position the laser fiber 40. Optionally, in some embodiments, the operating part 33 further includes a Luer connector 331, which communicates with the instrument channel 311. The laser fiber 40 passes through the Luer connector 331 into the instrument channel 311, and the sealing cap 332 is connected to the entrance of the Luer connector 331.

[0064] See Figure 2 Optionally, in some embodiments, the sheath 10 includes a tube body 11 and a seat 12. A main channel 111 extends through both ends of the tube body 11, and the seat 12 is connected to one end of the tube body 11. The seat 12 is provided with instrument inlets 121 extending through both ends of itself, and the instrument inlets 121 communicate with the main channel 111. It is readily understood that surgical instruments such as an endoscope 30 can enter the main channel 111 through the instrument inlets 121 and be transported to the lesion along the main channel 111.

[0065] Furthermore, in some embodiments, the diameter of the instrument inlet 121 gradually decreases along the direction close to the tube body 11. In other words, the instrument inlet 121 is funnel-shaped, which facilitates the insertion of the endoscope 30 and the obturator 20 into the main channel 111 through the instrument inlet 121, further improving surgical efficiency.

[0066] Combination Figure 7In some embodiments, the obturator 20 includes a rod 21, a handle 23 connected to one end of the rod 21, and a guide head 22 connected to the other end of the rod 21. The obturator 20 is detachably inserted into the sheath 10. When the obturator 20 is inserted into the sheath 10, the rod 21 is located in the main channel 111, at least a portion of the guide head 22 extends out of the main channel 111 away from the end of the seat 12 and blocks the main channel 111, and at least a portion of the handle 23 extends out of the instrument inlet 121 away from the end of the tube 11. By extending the guide head 22 out of the main channel 111 away from the end of the seat 12, the expansion effect of the guide head 22 can guide the sheath 10 through the urethra during the insertion of the sheath 10, preventing the sheath 10 from scratching the urethral tissue.

[0067] Combination Figure 1 Furthermore, one of the seat 12 and the handle 23 is provided with a limiting protrusion 231, and the other is provided with a limiting groove 122. After the obturator 20 is inserted into the sheath 10, the obturator 20 and the sheath 10 are rotated relative to each other, allowing the limiting protrusion 231 to engage with the limiting groove 122, thereby locking the obturator 20 in the sheath 10 axially; or the limiting protrusion 231 can be disengaged from the limiting groove 122 to release the locking of the obturator 20. By engaging the limiting protrusion 231 with the limiting groove 122, the obturator 20 can be locked in the sheath 10 axially, preventing axial displacement of the obturator 20 relative to the sheath 10 during implantation, thus ensuring the guiding and sealing effects of the obturator 20 on the sheath 10.

[0068] Specifically, when assembling the sheath 10 and the obturator 20, the obturator 20 is first inserted into the main channel 111 through the instrument inlet 121 of the base 12, so that at least a portion of the guide head 22 of the obturator 20 protrudes from the end of the main channel 111 away from the base 12 and blocks the main channel 111, and at least a portion of the handle 23 remains at the end of the instrument inlet 121 away from the tube 11. Then the obturator 20 is rotated to engage the limiting protrusion 231 into the limiting slot 122, thereby axially fixing the obturator 20 and the sheath 10.

[0069] After the end of the tube 11 away from the seat 12 is implanted into the lesion area, the obturator 20 is rotated in the opposite direction, so that the limiting protrusion 231 exits the limiting slot 122, thereby releasing the lock on the obturator 20. Then, the obturator 20 is pulled outward, so that the obturator 20 exits the sheath 10.

[0070] By setting a limiting protrusion 231 on one of the seat 12 of the sheath 10 and a limiting groove 122 on the other, and by rotating the obturator 20 after inserting it into the sheath 10, the limiting protrusion 231 is engaged in the limiting groove 122, thereby locking the obturator 20 in the sheath 10 axially. This achieves rapid assembly of the sheath 10 and the obturator 20, ensuring a stable connection between the obturator 20 and the sheath 10, preventing axial displacement of the obturator 20 relative to the sheath 10 during implantation, and thus ensuring the guiding and sealing effects of the obturator 20 on the sheath 10. Meanwhile, after the sheath 10 is inserted into place, the obturator 20 can be rotated in the opposite direction to release the limiting protrusion 231 from the limiting slot 122, thereby releasing the obturator 20 from the sheath 10 and improving surgical efficiency.

[0071] Optionally, see Figure 6 In one embodiment, the tube body 11 and the seat body 12 are coaxially arranged, a limiting groove 122 is formed in the seat body 12, and a limiting protrusion 231 is provided in the handle 23. Further, the limiting groove 122 includes an inlet / outlet groove 1221 and a locking groove 1222. The inlet / outlet groove 1221 extends along the axial direction of the seat body 12 and passes through the end of the seat body 12 away from the tube body 11. The locking groove 1222 communicates with the inlet / outlet groove 1221 and extends along the circumference of the seat body 12. The limiting protrusion 231 can enter or exit the locking groove 1222 through the inlet / outlet groove 1221.

[0072] Specifically, during the insertion of the obturator 20 into the sheath 10, the limiting protrusion 231 is aligned with the inlet / outlet groove 1221. Once the obturator 20 is fully inserted into the sheath 10, the limiting protrusion 231 moves along the inlet / outlet groove 1221 into one end of the locking groove 1222. Rotating the obturator 20 then moves the limiting protrusion 231 into the other end of the locking groove 1222, thus locking the obturator 20 axially within the sheath 10. After the sheath 10 is fully inserted, rotating the obturator 20 in the opposite direction returns the limiting protrusion 231 to the inlet / outlet groove 1221. Pulling the obturator 20 outwards then allows the limiting protrusion 231 to exit the limiting locking groove 122 along the inlet / outlet groove 1221, ultimately separating the obturator 20 from the sheath 10.

[0073] Optionally, the number of limiting slots 122 is multiple, such as two, three, four or more, and the multiple limiting slots 122 are arranged at intervals along the circumference of the base 12. The number of limiting protrusions 231 is also multiple, such as two, three, four or more. The limiting protrusions 231 are arranged in a one-to-one correspondence with the limiting slots 122. When the end-closer 20 is connected to the sheath 10, one limiting protrusion 231 is engaged in one limiting slot 122, thus further improving the connection stability between the end-closer 20 and the sheath 10.

[0074] Optionally, in some embodiments, the central angle corresponding to the length range of the snap-fit ​​groove 1222 is 10° to 45°, for example, 10°, 20°, 30° and 45°, so as to ensure that the limiting protrusion 231 and the snap-fit ​​groove 1222 are stably snapped together, while reducing the angle of rotation required for the pore closer 20, thereby realizing the rapid assembly and rapid separation of the pore closer 20 and the sheath tube 10.

[0075] See Figure 7 Optionally, in some embodiments, the rod 21, handle 23, and guide head 22 are independent components, with one end of the rod 21 bonded to the handle 23 and the other end of the rod 21 bonded to the guide head 22.

[0076] Furthermore, such as Figure 8 as well as Figure 9 As shown, in some embodiments, one of the rod 21 and the handle 23 is provided with a first positioning groove 211, and the other is provided with a first positioning protrusion 232, which is inserted into the first positioning groove 211. Thus, by utilizing the cooperation between the first positioning protrusion 232 and the first positioning groove 211, the rod 21 and the handle 23 can be initially fixed before the adhesive cures, while also increasing the bonding area between the rod 21 and the handle 23, thereby improving the connection stability between the rod 21 and the handle 23.

[0077] Similarly, such as Figure 10 As shown, one of the rod body 21 and the guide head 22 is provided with a second positioning groove 212, and the other is provided with a second positioning protrusion 222. The second positioning protrusion 222 is inserted into the second positioning groove 212. In this way, by using the cooperation between the second positioning protrusion 222 and the second positioning groove 212, the rod body 21 and the guide head 22 can be initially fixed before the adhesive cures. At the same time, it can also increase the bonding area between the rod body 21 and the guide head 22, thereby improving the connection stability between the rod body 21 and the guide head 22.

[0078] It is worth noting that in other embodiments, the rod 21 may also be threadedly connected to the guide head 22 and the handle 23, or the rod 21 may be integrally formed with the guide head 22 and the handle 23, which is not limited here.

[0079] Optionally, in some embodiments, the rod 21 is a metal component, such as a titanium alloy rod or a stainless steel rod. Specifically, during the implantation of the pore closer 20, the rod 21 is the main load-bearing component. By configuring the rod 21 as a metal material, the overall structural strength of the pore closer 20 can be increased, and its bending resistance can be improved.

[0080] Optionally, in some embodiments, the handle 23 and the guide head 22 are made of plastic. Specifically, the plastic handle 23 and guide head 22 can be injection molded, resulting in high product consistency and low processing costs. Optionally, the handle 23 and guide head 22 can be made of medical-grade plastic, which can well meet medical requirements. Furthermore, the guide head 22 can be made of elastic plastic, thereby further preventing scratches to human tissue.

[0081] See Figure 7 In some embodiments, the end of the guide head 22 away from the rod body 21 is an arc surface, which can further prevent the guide head 22 from scratching human tissue.

[0082] Optionally, in some embodiments, the diameter of the guide head 22 gradually decreases along the direction away from the rod 21. In this way, during the implantation of the sheath 10, the guide head 22 can gradually expand the natural cavity of the human body, ensuring that the guide head 22 can guide the sheath 10 into the narrow natural cavity of the human body.

[0083] See Figure 11 In other embodiments, the sidewall of the guide head 22 is provided with an expansion protrusion 221. Along the direction away from the rod 21, the height of the expansion protrusion 221 from the guide head 22 gradually decreases, that is, the expansion protrusion 221 is wedge-shaped. In this way, during the implantation of the sheath 10, the expansion protrusion 221 can expand the natural cavity of the human body, further improving the guiding effect of the guide head 22 on the sheath 10.

[0084] Furthermore, the number of expansion protrusions 221 can be multiple, such as two, three, four, five or more. Multiple expansion protrusions 221 are arranged at intervals along the circumference of the guide head 22, which can further improve the expansion effect of the guide head 22 on the natural cavities of the human body.

[0085] See Figure 5 as well as Figure 6 In some embodiments, the tube body 11 includes an inner tube 113 and an outer tube 112. The lumen of the inner tube 113 forms a main channel 111. The outer tube 112 is sleeved outside the inner tube 113. An injection channel 114 is formed between the outer tube 112 and the inner tube 113. The side wall of the outer tube 112 forms an outlet hole 1121 that communicates with the injection channel 114. The seat body 12 is also provided with an inlet 13 and a return port 14. The inlet 13 communicates with the injection channel 114, and the return port 14 communicates with the main channel 111.

[0086] Specifically, both the inlet 13 and the return port 14 are located at the end of the base 12 near the tube 11, while the outlet 1121 is located at the end of the outer tube 112 away from the base 12. Thus, during surgery, by injecting saline or medication into the inlet 13, the saline or medication can flow out through the outlet 1121 along the injection channel 114 to reach the lesion site for cooling or flushing. Optionally, there can be multiple outlets 1121, evenly distributed on the sidewall of the outer tube 112, ensuring uniform fluid output.

[0087] Meanwhile, during the procedure, saline solution injected into the lesion site can also flow back along the main channel 111 to the return port 14 and be discharged from the return port 14. In addition, after the procedure is completed, the endoscope 30 is pulled out from the main channel 111 of the sheath 10, and the return port 14 is connected to the negative pressure generating device. At this time, the main channel 111 can be used as a return channel to discharge surgical tissue fragments.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An ablation surgical device, characterized in that, include: Closed-hole device; An endoscope having a through-through instrument channel; A laser fiber is provided, which can be inserted into the instrument channel, with the distal end of the laser fiber extending out of the distal end of the instrument channel to form an ablation head for ablation, and the proximal end of the laser fiber extending out of the proximal end of the instrument channel for connection to a laser generating device. The sheath has a through main channel that can selectively insert the obturator or the endoscope. Specifically, when the obturator is inserted into the main channel, the distal end of the obturator extends out of the distal end of the main channel and blocks the main channel; when the endoscope is inserted into the main channel, the distal end of the endoscope extends out of the distal end of the main channel to obtain surgical images.

2. The ablation surgical device according to claim 1, characterized in that, The sheath includes a tube body and a seat body. The main channel passes through both ends of the tube body. The seat body is connected to one end of the tube body. The seat body has an instrument inlet that passes through both ends of the seat body. The instrument inlet communicates with the main channel. Along the direction close to the tube body, the diameter of the instrument inlet gradually decreases. The obturator or the endoscope can be inserted into the main channel through the instrument inlet.

3. The ablation surgical device according to claim 2, characterized in that, The closure device includes a rod, a handle connected to one end of the rod, and a guide head connected to the other end of the rod. When the closure device is inserted into the main channel, the rod is located in the main channel, at least a portion of the guide head extends out of the main channel away from the seat and blocks the main channel, and at least a portion of the handle extends out of the instrument inlet away from the tube.

4. The ablation surgical device according to claim 3, characterized in that, One of the base and the handle is provided with a limiting protrusion, and the other is provided with a limiting groove. After the end-closing device is inserted into the sheath, the end-closing device and the sheath rotate relative to each other, so that the limiting protrusion can be engaged in the limiting groove to lock the end-closing device in the sheath in the axial direction of the sheath; or the limiting protrusion can be disengaged from the limiting groove to release the locking of the end-closing device.

5. The ablation surgical device according to claim 4, characterized in that, The tube body and the base body are coaxially arranged. The limiting slot is formed in the base body, and the limiting protrusion is provided in the handle. The limiting slot includes an inlet / outlet slot and a locking slot. The inlet / outlet slot extends along the axial direction of the base body and passes through one end of the base body away from the tube body. The locking slot communicates with the inlet / outlet slot and extends along the circumference of the base body. The limiting protrusion can enter or exit the locking slot through the inlet / outlet slot.

6. The ablation surgical device according to claim 3, characterized in that, One of the rod and the handle is provided with a first positioning groove, and the other is provided with a first positioning protrusion, the first positioning protrusion being inserted into the first positioning groove; and / or One of the rod body and the guide head is provided with a second positioning groove, and the other is provided with a second positioning protrusion, the second positioning protrusion being inserted into the second positioning groove.

7. The ablation surgical device according to claim 3, characterized in that, The rod body is made of metal; and / or the handle and the guide head are made of plastic.

8. The ablation surgical device according to claim 3, characterized in that, The end of the guide head facing away from the rod body is an arc surface; and / or The diameter of the guide head gradually decreases in the direction away from the rod body; and / or, The guide head has an extended protrusion on its side wall, and the height of the extended protrusion from the guide head gradually decreases along the direction away from the rod body.

9. The ablation surgical device according to claim 2, characterized in that, The tube body includes an inner tube and an outer tube. The lumen of the inner tube forms the main channel. The outer tube is sleeved outside the inner tube. An injection channel is formed between the outer tube and the inner tube. An outlet hole communicating with the injection channel is formed on the side wall of the outer tube. The seat body is also provided with an inlet and a return port. The inlet communicates with the injection channel, and the return port communicates with the main channel.

10. The ablation surgical device according to any one of claims 1-9, characterized in that, The endoscope includes an insertion tube, a tip connected to one end of the insertion tube, and an operating part connected to the other end of the insertion tube. The instrument channel passes through the operating part, the insertion tube, and the tip. The tip is provided with a lens module for acquiring surgical images, and the operating part is provided with a sealing cap for sealing the instrument channel. The distal end of the laser fiber extends out of the distal end to form the ablation head, and the proximal end of the laser fiber extends out of the sealing cap; When the endoscope is inserted into the main channel, at least a portion of the tip protrudes from the distal end of the main channel, and at least a portion of the operating part protrudes from the proximal end of the main channel.

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