Working cannula for single-side double-channel spine endoscopic surgery

Abstract

The utility model discloses a working cannula for a single-side double-channel spine endoscopic surgery, which belongs to the technical field of spine surgeries, and comprises a cannula body, the cannula body comprises a deep tube and a limiting plate, the limiting plate is sleeved at the end part of the deep tube, the deep tube body is long, and the limiting plate is sleeved at the end part of the deep tube. The bottom is arranged obliquely, so that soft tissues can be prevented from being rolled in, the area of an inlet of lavage fluid is increased, the inlet and outlet efficiency of the lavage fluid is improved, and a clear operation view is kept; the positioning mechanism comprises a limiting assembly, the limiting assembly is connected to the exterior of the deep pipe in a sleeving mode, the limiting assembly is connected with the limiting plate in a limiting and clamping mode, a positioning assembly is installed at the bottom of the limiting assembly and adsorbed to the skin, and the limiting assembly and the positioning assembly are matched with each other to be used for positioning the deep pipe; the vertical friction of the deep tube and the displacement and separation of the working sleeve are avoided, the stability of the working sleeve is favorably maintained, and the operation working space is better maintained.

Description

Technical Field

[0001] This utility model relates to the field of spinal surgery technology, and more specifically, to a working cannula for unilateral dual-channel spinal endoscopic surgery. Background Technology

[0002] In the field of spinal surgery, unilateral dual-channel spinal endoscopic surgery (UBE) is gaining increasing attention and widespread application. UBE technology, by establishing endoscopic observation and instrument operation channels, offers advantages such as clear endoscopic visualization and flexible instrument manipulation, contributing to improved surgical efficiency and treatment outcomes. However, in UBE surgery, the performance of the working cannula is crucial to the success of the procedure.

[0003] Traditional working cannulas present several problems during use. Regarding maintaining the surgical working space, soft tissues such as muscles and fascia around the operating channel can easily block or obstruct the outflow channel, hindering the drainage of irrigation fluid and consequently affecting the clarity of the surgical field, increasing the risk of surgical complications. Secondly, the cannulas lack effective design in terms of positioning and stability, making them prone to displacement and dislodgement. Furthermore, the cannulas experience friction with surrounding tissues, especially during repeated instrument insertions and withdrawals or prolonged surgeries. Accumulated friction may increase the potential risk of tissue damage, inflammatory reactions, and other complications, affecting the accuracy and safety of the surgical procedure. Therefore, inventing a working cannulas for unilateral dual-channel spinal endoscopic surgery to address these issues has become a pressing problem for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a working cannula for unilateral dual-channel spinal endoscopic surgery, which aims to improve the problem that the surrounding soft tissues such as muscles and fascia are prone to block and obstruct the outflow channel when the cannula is in use, and that the cannula has poor positioning and stability.

[0005] This invention is achieved as follows: a working cannula for unilateral dual-channel spinal endoscopic surgery, comprising...

[0006] The sleeve body includes an inlet tube and a limiting plate, the limiting plate being sleeved on the end of the inlet tube, and the bottom of the inlet tube being inclined.

[0007] The positioning mechanism includes a limiting component, which is sleeved on the outside of the infiltration tube and engaged with the limiting plate. A positioning component is installed at the bottom of the limiting component and is adsorbed onto the skin.

[0008] In a preferred embodiment of this utility model, the bottom of the infiltration tube is an arc-shaped oblique cut, the limiting plate is elliptical, and the middle part of the limiting plate is fixedly sleeved on the top of the infiltration tube.

[0009] In a preferred embodiment of this utility model, the limiting component includes an annular shell, an annular plate is fixedly connected to the inner ring of the annular shell, the annular plate and the annular shell are stepped, an inner mounting plate is rotatably disposed above the annular plate, and limiting blocks are symmetrically installed on both sides above the inner mounting plate.

[0010] In a preferred embodiment of this utility model, a bearing is fixedly sleeved on the outside of the inner mounting plate, the outer ring of the bearing is fixedly connected to the inner ring of the ring shell, and the inner mounting plate is rotatably connected to the ring shell through the bearing.

[0011] In a preferred embodiment of this utility model, a groove is provided in the middle of the limiting block, and the groove is correspondingly provided at both ends of the limiting plate.

[0012] In a preferred embodiment of this utility model, guide arcs are respectively provided at the diagonal corners of the two grooves of the limiting block above the limiting block, and the guide arcs are provided corresponding to the limiting plate.

[0013] In a preferred embodiment of this utility model, the positioning component includes a suction cup, and multiple sets of suction cups are provided. The multiple sets of suction cups are equally distributed and connected to each other around the bottom of the ring shell. An input pipe is provided on one side of the suction cup, and the input pipe is connected to an external negative pressure pump.

[0014] In a preferred embodiment of this utility model, a sealing ring is provided through the middle of the suction cup, a lower support plate is fixedly provided at the bottom of the sealing ring, the lower support plate abuts against the inside of the suction cup, a connecting cylinder is fixedly connected to the top of the sealing ring, a sealing nut is threaded onto the outside of the connecting cylinder, the sealing nut abuts against the top of the suction cup, and the connecting cylinder is connected to the ring shell.

[0015] In a preferred embodiment of this utility model, an mounting cylinder is provided at the inner bottom of the ring shell, the inner wall of the mounting cylinder is threaded, and the connecting cylinder is threadedly and sealed to the mounting cylinder.

[0016] In a preferred embodiment of this utility model, the inner wall of the bottom end of the sealing ring is set with an internal hexagon, and the inner wall of the sealing ring is correspondingly set with a hexagonal wrench.

[0017] The beneficial effects of this utility model are as follows: The working cannula for unilateral dual-channel spinal endoscopic surgery obtained by the above design has an inclined bottom with a circular arc-shaped oblique incision when in use. This design can effectively prevent soft tissues such as paraspinal muscles and fascia from being rolled in and blocking the outflow channel (especially when using a drill). At the same time, it increases the inlet area of ​​the irrigation fluid, which helps to improve the efficiency of irrigation fluid entry and exit, thereby better maintaining the surgical working space and maintaining a clear surgical field of vision.

[0018] The positioning mechanism adheres to the skin via a suction cup, providing stable support in the vertical direction to ensure that the working cannula does not move up and down during the operation, but does not completely restrict the horizontal movement of the working cannula. This meets the needs of unilateral dual-channel endoscopic surgery and improves the accuracy and safety of the surgical procedure.

[0019] The inner mounting plate in the limiting assembly is rotatable, and the limiting block cooperates with the limiting plate through grooves and guide arcs, which facilitates the alignment and installation of the working sleeve with the skin incision. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the sleeve body structure provided in this embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the sleeve body installation structure provided for an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of the limiting component structure provided for an embodiment of this utility model;

[0024] Figure 4 A schematic diagram of the positioning component structure provided for an embodiment of this utility model;

[0025] Figure 5 A schematic cross-sectional view of the limiting component provided for an embodiment of this utility model.

[0026] In the diagram: 100, sleeve body; 110, insertion tube; 120, limiting plate; 200, positioning mechanism; 210, limiting component; 211, ring shell; 212, ring plate; 213, mounting cylinder; 214, inner mounting plate; 215, limiting block; 216, guide arc; 220, positioning component; 221, suction cup; 222, connecting cylinder; 223, sealing ring; 224, lower support plate; 225, sealing nut; 226, input tube. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a working cannula for unilateral dual-channel spinal endoscopic surgery, comprising...

[0029] The sleeve body 100 includes an inlet tube 110 and a limiting plate 120. The limiting plate 120 is sleeved on the end of the inlet tube 110. The bottom of the inlet tube 110 is inclined to increase the inlet area of ​​the irrigation fluid.

[0030] The positioning mechanism 200 includes a limiting component 210, which is sleeved on the outside of the insertion tube 110 and engaged with the limiting plate 120. A positioning component 220 is installed at the bottom of the limiting component 210 and is attached to the skin. The limiting component 210 and the positioning component 220 cooperate to position the insertion tube 110 and prevent the insertion tube 110 from rubbing up and down.

[0031] Please see Figure 2 and Figure 5 The bottom of the incision tube 110 is an arc-shaped oblique incision, and the limiting plate 120 is elliptical. The middle part of the limiting plate 120 is fixedly sleeved on the top of the incision tube 110. The diameter of the incision tube 110 is 1cm, and the length can be set to 4cm, 6cm, 8cm, or 10cm. This can prevent the soft tissues such as the paraspinal muscles and fascia of the spine from being rolled in, avoid blocking the outflow channel, improve the outflow efficiency of the irrigation fluid, and thus maintain a clear surgical field. The incision tube 110 and the limiting plate 120 are made of stainless steel and can be repeatedly sterilized and reused.

[0032] Please see Figures 2 to 4 The limiting assembly 210 includes an annular shell 211, with an annular plate 212 fixedly connected to the inner ring of the annular shell 211. The annular plate 212 and the annular shell 211 are stepped. An inner mounting plate 214 is rotatably mounted above the annular plate 212. Limiting blocks 215 are symmetrically mounted on both sides of the upper part of the inner mounting plate 214. A bearing is fixedly sleeved on the outside of the inner mounting plate 214. The outer ring of the bearing is fixedly connected to the inner ring of the annular shell 211. The inner mounting plate 214 is rotatably connected to the annular shell 211 through the bearing. The bearing is used to facilitate the rotation of the limiting blocks 215 to limit the limiting plate 120.

[0033] A groove is provided in the middle of the limiting block 215, and the groove is correspondingly provided at both ends of the limiting plate 120. Guide arcs 216 are respectively provided at the diagonal of the grooves of the two limiting blocks 215 above the limiting block 215. The guide arcs 216 are correspondingly provided with the limiting plate 120 and are used to guide and facilitate the entry of the limiting plate 120.

[0034] The positioning component 220 includes suction cups 221, which are arranged in multiple sets. These suction cups 221 are evenly distributed and connected around the bottom of the ring housing 211. An input pipe 226 is connected to one side of each suction cup 221, and the input pipe 226 is connected to an external negative pressure pump. A sealing ring 223 is inserted through the middle of each suction cup 221. A lower support plate 224 is fixedly installed at the bottom of the sealing ring 223, and the lower support plate 224 abuts against the inside of the suction cup 221. A connecting cylinder 222 is fixedly connected to the top of the sealing ring 223, and a sealing nut 225 is threaded onto the outside of the connecting cylinder 222. The sealing nut 225 abuts against the top of the suction cup 221. The connecting cylinder 222 is connected to the ring housing 211, and the sealing nut 225, in conjunction with the lower support plate 224, seals the suction cup 221.

[0035] The inner bottom of the ring shell 211 is provided with mounting cylinders 213, the inner wall of which is threaded. The connecting cylinder 222 is threadedly and sealed to the mounting cylinder 213. The inner wall of the bottom end of the sealing ring 223 is hexagonal, and the inner wall of the sealing ring 223 is correspondingly set with a hexagonal wrench. By inserting the hexagonal wrench into the inner bottom of the sealing ring 223 and rotating it, the connecting cylinder 222 and the mounting cylinder 213 are fixedly connected. When cleaning is required, all parts are completely disassembled and disinfected for recycling to avoid infection.

[0036] Working principle: The suction cup 221 of the positioning component 220 is connected to the ring shell 211 through the mounting cylinder 213. When the external negative pressure pump is connected to the input pipe 226 and the negative pressure pump is started, a negative pressure is formed inside the suction cup 221, causing it to adhere tightly to the patient's skin surface.

[0037] When installing the working sleeve, insert the incision tube 110 into the surgical site. After insertion, rotate the limiting block 215. The limiting block 215, in conjunction with the guide arc 216, causes the limiting plate 120 to be locked into the limiting block 215, preventing the incision tube 110 from moving up and down and causing friction.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A working cannula for unilateral dual channel endoscopic spinal surgery, characterized in that, The utility model provides a kind of deep tube for skin, including sleeve body, the sleeve body includes deep tube and limiting plate, the limiting plate is sleeved in the end of the deep tube, the bottom of the deep tube is inclinedly arranged; Positioning mechanism, the positioning mechanism includes limiting component, the limiting component is sleeved in the outside of the deep tube, the limiting component is limitedly connected with the limiting plate, the bottom of the limiting component is equipped with positioning component, and the positioning component is adsorbed to skin. The bottom of the deep tube is circular arc oblique cut, the limiting plate is elliptically arranged, and the middle part of the limiting plate is fixedly sleeved on the top of the deep tube.

2. A working cannula for unilateral double channel endoscopic spinal surgery according to claim 1, characterized in that: The limiting component includes ring shell, the inner ring of the ring shell is fixedly connected with ring plate, the ring plate and the ring shell are stepped, the upper ring plate is rotatably provided with inner mounting plate, and the upper two sides of the inner mounting plate are symmetrically provided with limiting block.

3. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 2, wherein: The outer part of the inner mounting plate is fixedly sleeved with bearing, the outer ring of the bearing is fixedly connected with the inner ring of the ring shell, and the inner mounting plate is rotatably connected with the ring shell by the bearing.

4. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 3, wherein: The middle part of the limiting block is provided with a groove, and the groove is correspondingly provided with both ends of the limiting plate.

5. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 3, wherein: The upper two limiting block grooves of the limiting block are respectively provided with guide arcs at opposite corners, and the guide arcs are correspondingly provided with the limiting plate.

6. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 5 wherein: The positioning component includes suction cup, the suction cup is provided with multiple groups, and the multiple groups of suction cups are respectively divided and rotatably installed on the bottom of the ring shell, one side of the suction cup is rotatably provided with input pipe, and the input pipe is rotatably connected with external negative pressure pump.

7. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 3 wherein: The middle part of the suction cup is rotatably provided with sealing ring, the bottom of the sealing ring is fixedly provided with lower support plate, the lower support plate is abutted with the inside of the suction cup, the top of the sealing ring is fixedly connected with connecting barrel, the outer part of the connecting barrel is rotatably provided with sealing nut, the sealing nut is abutted with the top of the suction cup, and the connecting barrel is rotatably connected with the ring shell.

8. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 7, wherein: The inner bottom of the ring shell is respectively provided with mounting barrel, the inner wall of the mounting barrel is screw-threadedly provided, and the connecting barrel is screw-threadedly and sealingly installed in the mounting barrel.

9. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 8, wherein: The inner wall of the bottom end of the sealing ring is hexagonally provided, and the inner wall of the sealing ring is correspondingly provided with hexagonal wrench.

10. A working cannula for unilateral double channel endoscopic spinal surgery as claimed in claim 9, wherein: ​

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