A surgical retractor with liquid suction function in oral and maxillofacial surgery and a using method thereof

Abstract

The application discloses a surgical retractor with liquid suction function in oral and maxillofacial surgery and a use method, relates to the technical field of surgical retractors, and comprises a retractor body, one side of the retractor body is provided with a negative pressure suction pipe, one side of the retractor body is provided with two docking mechanisms, and the docking mechanism comprises a docking seat and a docking block. Through the arrangement of the docking mechanism, detachable connection of the negative pressure suction pipe and the retractor body is realized, the demand for switching different pipe diameter negative pressure suction pipes as required during surgery is met, meanwhile, after the side plate is closed, the plug is inserted into the insertion hole by rotating the screw rod, locking can be quickly completed, and tissue disturbance caused by overall replacement of instruments is avoided. On the basis, the layout of the screw rod penetrating through the storage groove and the side plate effectively limits the circumferential deflection of the plug, ensures the stability of the plug-in process and the sealing reliability after locking, and the effective constraint of the limiting sleeve on the end of the negative pressure suction pipe avoids displacement and falling hazards of the negative pressure suction pipe during traction.

Description

Technical Field

[0001] This invention relates to the field of surgical retractor technology, specifically to a surgical retractor with aspiration function for oral and maxillofacial surgery and its usage method. Background Technology

[0002] Oral and maxillofacial surgery often involves a small operating space and complex anatomical structures. During the operation, a large amount of blood and saliva often accumulates, which seriously affects the clarity of the surgical field and the accuracy of the operation. Clinically, it is usually necessary for a dedicated person to hold the suction device and use the retractor to maintain the exposure of the field of vision. However, this traditional collaborative mode not only occupies limited surgical manpower and operating space, but also makes it difficult to achieve synchronous and coordinated movement of the suction device and the retractor as two independent instruments. In deep or delicate dissection operations, the lack of coordination can easily lead to obstruction of the surgical field, accidental tissue damage, or reduced suction efficiency, prolonging the operation time and increasing the risk of complications.

[0003] Existing surgical retractors with suction function often use welding, bonding, or integral molding to fix the negative pressure suction tube to the retractor body. The diameter and position of the suction tube are fixed at the factory, making it impossible to flexibly change or adjust according to the different needs of suction flow, tube diameter and fitting angle at different stages of the operation. When facing special scenarios such as pediatric patients, deep and narrow surgical areas or high-viscosity effusions, the fixed specification suction tube often fails to effectively cover the target area due to mismatched diameter or positional deviation. If it is forcibly replaced, the entire retractor needs to be replaced, which increases the cost of instrument preparation and the time spent switching during the operation. Furthermore, the repeated entry and exit of the surgical cavity exacerbates tissue disturbance and infection risks.

[0004] Therefore, the applicant proposes a surgical retractor with suction function during oral and maxillofacial surgery and its usage method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a surgical retractor with suction function in oral and maxillofacial surgery and its usage method, in order to solve the problems that existing surgical retractors with suction function are mostly fixedly connected to the negative pressure suction tube and the retractor body, making it impossible to replace the negative pressure suction tube with a suitable diameter as needed, making it difficult to meet the suction needs of different surgical areas, and requiring the entire retractor body to be replaced when changing, which increases the operation time and the risk of tissue disturbance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surgical retractor with suction function for oral and maxillofacial surgery, comprising a retractor body, a negative pressure suction tube on one side of the retractor body, and two docking mechanisms on one side of the retractor body. Each docking mechanism includes a docking seat and a docking block. One side of the docking seat is fixedly connected to one side of the retractor body. The docking block is sleeved on the outer surface of the negative pressure suction tube. A structural groove is formed on one side of the docking seat. The outer surface of the docking block is slidably connected to the inner cavity of the corresponding structural groove. Several insertion holes are formed on the side of the docking block away from the retractor body. Mounting grooves are formed on the inner walls of both sides of the structural groove. A side plate is rotatably connected to the inner wall of one side of the mounting groove. Two screws are provided on one side of the side plate. One end of each screw passes through the corresponding side plate side wall and is rotatably connected to an insertion block. One end of the insertion block is inserted into the corresponding insertion hole.

[0007] Furthermore, a limiting sleeve is fixedly connected to the bottom of the hook body, and one end of the negative pressure suction tube extends through the inner cavity of the limiting sleeve to one side of the limiting sleeve.

[0008] Furthermore, one side of the side plate abuts against the inner wall of the corresponding mounting groove.

[0009] Furthermore, a number of storage slots are provided on one outer wall of the side plate, and one end of the screw passes through the inner cavity of the corresponding storage slot and the other end of the corresponding side plate side wall and is rotatably connected to the corresponding insert block through a rotating shaft.

[0010] Furthermore, a vertical groove block is fixedly connected to the end of the screw away from the insertion block, and the vertical groove block is located in the inner cavity of the corresponding storage groove.

[0011] Furthermore, the other side of the side plate is rotatably connected to the inner wall of the corresponding mounting groove via a hinge.

[0012] Furthermore, two sliding grooves are respectively opened on the inner walls of the two sides of the structural groove, and two sliders are respectively fixedly connected to the two sides of the docking block, with one end of the slider slidably connected to the inner cavity of the corresponding sliding groove.

[0013] Furthermore, a number of guide rods are fixedly connected to the other side of the side plate, and the end of the guide rod away from the side plate extends through the side wall of the corresponding insertion block to one side of the insertion block.

[0014] Furthermore, the inner cavity of the slide groove is connected to the inner cavity of the corresponding structural groove, and the inner cavity of the mounting groove is connected to the inner cavity of the corresponding structural groove.

[0015] A method for using a surgical retractor with aspiration function during oral and maxillofacial surgery includes the following sequence of steps:

[0016] S1. Select a negative pressure straw with a suitable diameter, attach the negative pressure straw to the hook body, align one end of the negative pressure straw with the inner cavity of the limiting sleeve, and align the docking block on the outer surface of the negative pressure straw with the corresponding structural groove on the docking seat.

[0017] S2. Push the docking block along the opening direction of the structural groove, so that the sliders on both sides of the docking block slide into the corresponding positions of the groove cavity, until the docking block is completely inside the structural groove cavity. At this time, one end of the negative pressure suction tube passes through the inner cavity of the limiting sleeve and extends to the side of the limiting sleeve away from the hook body.

[0018] S3. Rotate the side plate so that it rotates around the hinge until it abuts against the inner wall of the corresponding mounting slot, thus completing the closed positioning of the side plate.

[0019] S4. Use an external tool to drive the vertical slot block to rotate, which drives the screw to rotate synchronously. Under the threaded transmission, the screw moves axially toward the inner cavity of the structural slot and pushes the insert block to move toward the docking block. During this process, the insert block slides along the guide rod without rotating relative to it until the insert block is inserted into the corresponding insertion hole, thus completing the locking of the docking block and the docking seat.

[0020] S5. During the operation, a negative pressure source is connected to the negative pressure suction tube. While the tissue is pulled by the retractor body, the fluid in the surgical area is suctioned out through the negative pressure suction tube. After the operation or when changing to a different diameter negative pressure suction tube, the vertical groove block is rotated in the opposite direction to disengage the insertion block from the insertion hole. After opening the side plate, the docking block is pulled out along the sliding groove to achieve quick disassembly and separation of the negative pressure suction tube and the retractor body.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The docking mechanism enables a detachable connection between the negative pressure suction tube and the hook body, meeting the need to switch between different diameter negative pressure suction tubes as needed during surgery. Simultaneously, after the side plate is closed, the insertion block can be quickly locked by turning the screw into the insertion hole, eliminating tissue interference caused by replacing the entire instrument. The screw's layout through the storage slot and side plate effectively limits the circumferential deflection of the insertion block, ensuring a smooth insertion process and reliable sealing after locking. Combined with the limiting sleeve effectively constraining the end of the negative pressure suction tube, it avoids displacement and detachment risks during suction, ensuring the precision and stability of the aspiration pathway. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the hook body structure provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the limiting sleeve structure provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the negative pressure straw structure provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the docking seat structure provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the side plate structure provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the insert structure provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Hook body; 2. Limiting sleeve; 3. Negative pressure suction tube; 4. Docking mechanism; 401. Docking seat; 402. Structural groove; 403. Docking block; 404. Insertion hole; 405. Slider; 406. Slide groove; 407. Side plate; 408. Mounting groove; 409. Screw; 410. Guide rod; 411. Insertion block; 412. Vertical groove block; 413. Storage groove. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] As attached Figure 1 To be continued Figure 7 As shown:

[0035] Example 1:

[0036] This invention provides a surgical retractor with suction function for oral and maxillofacial surgery, comprising a retractor body 1, a negative pressure suction tube 3 disposed on one side of the retractor body 1, and two docking mechanisms 4 disposed on one side of the retractor body 1. Each docking mechanism 4 includes a docking seat 401 and a docking block 403. One side of the docking seat 401 is fixedly connected to one side of the retractor body 1, and the docking block 403 is sleeved on the outer surface of the negative pressure suction tube 3. A structural groove 402 is formed on one side of the docking seat 401, and the outer surface of the docking block 403... The mating block 403 is slidably connected to the inner cavity of the corresponding structural groove 402. Several insertion holes 404 are provided on the side away from the hook body 1. The inner walls of both sides of the structural groove 402 are respectively provided with mounting grooves 408. A side plate 407 is rotatably connected to the inner wall of one side of the mounting groove 408. Two screws 409 are provided on one side of the side plate 407. One end of the screw 409 passes through the corresponding side wall of the side plate 407 through a thread and is rotatably connected to an insertion block 411. One end of the insertion block 411 is inserted into the corresponding insertion hole 404.

[0037] The bottom of the hook body 1 is fixedly connected to the limiting sleeve 2, and one end of the negative pressure suction tube 3 extends through the inner cavity of the limiting sleeve 2 to one side of the limiting sleeve 2.

[0038] One side of the side plate 407 abuts against the inner wall of the corresponding mounting groove 408.

[0039] A number of storage slots 413 are provided on one side of the outer wall of the side plate 407. One end of the screw 409 passes through the inner cavity of the corresponding storage slot 413 by thread and the other end of the corresponding side plate 407 is rotatably connected to the corresponding insert 411 by a rotating shaft.

[0040] The end of the screw 409 away from the insertion block 411 is fixedly connected to a vertical groove block 412, which is located in the inner cavity of the corresponding storage groove 413.

[0041] The other side of the side plate 407 is rotatably connected to the inner wall of the corresponding mounting groove 408 via a hinge.

[0042] Working principle: Medical staff first select a negative pressure suction tube 3 with an appropriate diameter according to the intraoperative aspiration needs. They then attach the negative pressure suction tube 3 to the hook body 1, aligning one end of the tube with the inner cavity of the limiting sleeve 2. Simultaneously, they align the connecting block 403, which is sleeved on the outer surface of the negative pressure suction tube 3, with the corresponding structural groove 402 on the connecting seat 401. The connecting block 403 is pushed in along the opening direction of the structural groove 402, allowing the outer surface of the connecting block 403 to slide into the inner cavity of the structural groove 402 until the connecting block 403 is completely inside the structural groove 402. At this point, one end of the negative pressure suction tube 3 passes through the inner cavity of the limiting sleeve 2 and extends to one side of the limiting sleeve 2. Following this... Rotate the side plate 407 until one side of it abuts against the inner wall of the corresponding mounting groove 408 to complete the closed positioning. Then use an external tool to drive the screw 409 to rotate. Since the screw 409 passes through the inner cavity of the corresponding storage groove 413 and the side wall of the corresponding side plate 407 through the thread, the rotation of the screw 409 causes it to move axially toward the inner cavity of the structural groove 402, thereby pushing the insert 411 to move toward the docking block 403 until one end of the insert 411 is inserted into the corresponding insertion hole 404, completing the locking of the docking block 403 and the docking seat 401, and realizing the combination and fixation of the negative pressure suction tube 3 and the hook body 1.

[0043] This solution, by setting a docking mechanism 4 including a docking seat 401 and a docking block 403 on one side of the hook body 1, and cooperating with the sliding connection between the structural groove 402 and the outer surface of the docking block 403, allows personnel to flexibly select and combine negative pressure suction tubes 3 of appropriate diameter according to the different needs of different surgical areas for aspiration flow and tube diameter. This effectively solves the problem that existing surgical hooks with aspiration function cannot be replaced as needed because the negative pressure suction tube 3 is fixedly connected to the hook body 1. Through the setting of side plate 407, screw 409, insert block 411 and insertion hole 404, personnel only need to rotate screw 409 to drive insert block 411 into insertion hole 404 to complete quick locking, avoiding Repeated disassembly and reassembly of the entire hook can cause disturbance and infection risks to the surgical cavity tissue. To address the potential for the insertion block 411 to rotate circumferentially with the screw 409 during the locking process, leading to a shift in the insertion angle, the screw 409 is designed with threads passing through the inner cavity of the storage groove 413 and the side wall of the side plate 407. This ensures that the insertion block 411 maintains the correct insertion posture during axial displacement, guaranteeing the stability and sealing of the negative pressure suction tube 3 after it is connected to the hook body 1, and improving the reliability of continuous fluid aspiration during surgery. In addition, the limiting sleeve 2 limits the penetration of the end of the negative pressure suction tube 3, effectively preventing radial displacement or detachment of the negative pressure suction tube 3 during tissue traction, ensuring precise alignment of the aspiration passage with the surgical area.

[0044] Example 2:

[0045] This embodiment is basically the same as the previous embodiment, except that two sliding grooves 406 are respectively opened on the inner walls of both sides of the structural groove 402, and two sliders 405 are respectively fixedly connected to both sides of the docking block 403, with one end of the slider 405 slidingly connected to the inner cavity of the corresponding sliding groove 406.

[0046] Several guide rods 410 are fixedly connected to the other side of the side plate 407. The end of the guide rod 410 away from the side plate 407 extends through the side wall of the corresponding insert 411 to one side of the insert 411.

[0047] The inner cavity of the slide groove 406 is connected to the inner cavity of the corresponding structural groove 402, and the inner cavity of the mounting groove 408 is connected to the inner cavity of the corresponding structural groove 402.

[0048] Working principle: Two sliding grooves 406 are respectively opened on the inner walls of both sides of the structural groove 402, and two sliders 405 are fixedly connected to both sides of the mating block 403, with one end of each slider 405 slidingly connected to the inner cavity of the corresponding sliding groove 406. When a person pushes the mating block 403 along the opening direction of the structural groove 402, the sliders 405 on both sides of the mating block 403 simultaneously slide into the inner cavity of the corresponding sliding groove 406, forming a sliding guide fit. This restricts the radial offset and circumferential rotation of the mating block 403 during the pushing process, ensuring smooth operation. The connecting block 403 can only move smoothly along the axial direction of the structural groove 402 until it is fully inserted into the inner cavity of the structural groove 402. This ensures that the connecting block 403 is precisely aligned with the structural groove 402 and avoids the subsequent insertion block 411 being unable to be inserted smoothly due to the positional deviation of the insertion hole 404. Several guide rods 410 are fixedly connected to the other side of the side plate 407, and the end of the guide rod 410 away from the side plate 407 extends through the side wall of the corresponding insertion block 411 to one side of the insertion block 411. When the screw 409 rotates, it pushes the insertion block 411 toward the opposite side. During the axial displacement of the connecting block 403, the insert block 411 slides along the guide rod 410 without rotating synchronously with the screw 409. The guide rod 410 provides stable linear motion constraint for the insert block 411, preventing the insert block 411 from circumferentially deflecting or jamming due to threaded transmission. This ensures that the insert block 411 is always inserted into the corresponding insertion hole 404 in the correct posture, improving locking reliability and smooth operation. This is achieved through the connection between the inner cavity of the slide groove 406 and the inner cavity of the corresponding structural groove 402, and the connection between the inner cavity of the mounting groove 408 and the corresponding structural groove 404. The interconnected design of the inner cavity of 02 allows the slider 405 to smoothly slide into the interior of the structural groove 402 via the connected slide groove 406 when the docking block 403 is pushed into the inner cavity of the structural groove 402. At the same time, when the side plate 407 is closed, its mounting groove 408 and the structural groove 402 form a through space, allowing the insert block 411 to extend into the structural groove 402 from the side of the mounting groove 408 without obstruction and accurately align with the insertion hole 404. This achieves the effect of ensuring the continuous and unobstructed movement path of each functional component and avoiding assembly interference or locking failure caused by structural partitions.

[0049] Example 3:

[0050] This embodiment provides a method for using a surgical retractor with aspiration function during oral and maxillofacial surgery, specifically including the following timing steps:

[0051] S1. Medical staff first select a negative pressure suction tube 3 with an appropriate diameter according to the intraoperative fluid aspiration needs, attach the negative pressure suction tube 3 to the hook body 1, align one end of the negative pressure suction tube 3 with the inner cavity of the limiting sleeve 2, and align the docking block 403 sleeved on the outer surface of the negative pressure suction tube 3 with the corresponding structural groove 402 on the docking seat 401.

[0052] S2. Push the docking block 403 into the opening direction of the structural groove 402, so that the sliders 405 on both sides of the docking block 403 slide into the inner cavity of the corresponding groove 406. Use the sliding cooperation between the sliders 405 and the groove 406 to guide and limit the docking block 403 until the docking block 403 is completely inserted into the inner cavity of the structural groove 402. At this time, one end of the negative pressure suction tube 3 passes through the inner cavity of the limiting sleeve 2 and extends to the side of the limiting sleeve 2 away from the hook body 1, completing the initial positioning of the negative pressure suction tube 3 and the hook body 1.

[0053] S3. Rotate the side plate 407 so that it rotates around the hinge until one side of it abuts against the inner wall of the corresponding mounting groove 408, thus completing the closed positioning of the side plate 407 and providing a closed operating space for subsequent locking operations.

[0054] S4. Using an external tool to drive the vertical groove block 412 to rotate, causing the screw 409 to rotate synchronously. Under the threaded transmission, the screw 409 moves axially toward the inner cavity of the structural groove 402 and pushes the insert block 411 toward the docking block 403. During this process, the insert block 411 slides along the guide rod 410 without relative rotation. The guide rod 410 effectively prevents the insert block 411 from circumferentially deflecting with the screw 409, ensuring that the insert block 411 always moves axially in the correct posture until the insert block 411 is inserted into the corresponding insertion hole 404, completing the rigid locking of the docking block 403 and the docking seat 401, and realizing the combination and fixation of the negative pressure suction tube 3 and the hook body 1.

[0055] S5. During the operation, a negative pressure source is connected to the negative pressure suction tube 3. While the tissue is pulled by the hook body 1, the fluid in the surgical area is suctioned out through the negative pressure suction tube 3. After the operation or when it is necessary to change to a different diameter negative pressure suction tube 3, the vertical groove block 412 is rotated in the opposite direction to release the locking of the insertion block 411 from the insertion hole 404. After opening the side plate 407, the docking block 403 is pulled out along the sliding groove 406. This allows for the quick disassembly and separation of the negative pressure suction tube 3 from the hook body 1, which is convenient for changing to a suitable diameter negative pressure suction tube 3 as needed or for postoperative cleaning and disinfection.

[0056] The method described in this embodiment achieves rapid assembly, stable locking, and convenient disassembly of the negative pressure suction tube 3 and the hook body 1 through the guiding cooperation of the slider 405 and the slide groove 406, the anti-rotation constraint of the guide rod 410 on the insertion block 411, and the threaded locking mechanism driven by the vertical groove block 412. This effectively solves the problem that existing surgical hooks with suction function cannot replace the negative pressure suction tube 3 as needed due to the fixed connection. At the same time, it avoids the disturbance to the surgical cavity tissue caused by repeatedly disassembling and assembling the entire hook, and improves the flexibility and safety of intraoperative operation.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A surgical retractor with suction function for oral and maxillofacial surgery, comprising a retractor body (1), characterized in that, A negative pressure suction tube (3) is provided on one side of the hook body (1), and two docking mechanisms (4) are provided on one side of the hook body (1). The docking mechanism (4) includes a docking seat (401) and a docking block (403). One side of the docking seat (401) is fixedly connected to one side of the hook body (1), and the docking block (403) is sleeved on the outer surface of the negative pressure suction tube (3). A structural groove (402) is opened on one side of the docking seat (401), and the outer surface of the docking block (403) slides with the inner cavity of the corresponding structural groove (402). The connecting block (403) has several insertion holes (404) on the side away from the hook body (1). The inner walls of both sides of the structural groove (402) are respectively provided with mounting grooves (408). A side plate (407) is rotatably connected to one side of the inner wall of the mounting groove (408). Two screws (409) are provided on one side of the side plate (407). One end of the screw (409) passes through the corresponding side plate (407) side wall and is rotatably connected to an insertion block (411). One end of the insertion block (411) is inserted into the corresponding insertion hole (404).

2. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, The bottom of the hook body (1) is fixedly connected to the limiting sleeve (2), and one end of the negative pressure suction tube (3) extends through the inner cavity of the limiting sleeve (2) to one side of the limiting sleeve (2).

3. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, One side of the side plate (407) abuts against the inner wall of the corresponding mounting groove (408).

4. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, The outer wall of one side of the side plate (407) is provided with several storage slots (413). One end of the screw (409) passes through the inner cavity of the corresponding storage slot (413) and the other end of the corresponding side plate (407) is rotatably connected to the corresponding insert (411) by a rotating shaft.

5. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 4, characterized in that, The screw (409) is fixedly connected to a vertical groove block (412) at the end away from the insert block (411), and the vertical groove block (412) is located in the inner cavity of the corresponding storage groove (413).

6. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, The other side of the side plate (407) is rotatably connected to the inner wall of the corresponding mounting groove (408) via a hinge.

7. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, Two sliding grooves (406) are respectively opened on the inner walls of the two sides of the structural groove (402), and two sliders (405) are respectively fixedly connected to the two sides of the docking block (403). One end of the slider (405) is slidably connected to the inner cavity of the corresponding sliding groove (406).

8. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 1, characterized in that, A number of guide rods (410) are fixedly connected to the other side of the side plate (407). The end of the guide rod (410) away from the side plate (407) extends through the side wall of the corresponding insert (411) to one side of the insert (411).

9. A surgical retractor with suction function for oral and maxillofacial surgery according to claim 7, characterized in that, The inner cavity of the slide groove (406) is connected to the inner cavity of the corresponding structural groove (402), and the inner cavity of the mounting groove (408) is connected to the inner cavity of the corresponding structural groove (402).

10. A method for using a surgical retractor with suction function during oral and maxillofacial surgery according to any one of claims 1 to 9, characterized in that, Includes the following timing steps: S1. Select a negative pressure straw (3) with a suitable diameter, attach the negative pressure straw (3) to the hook body (1), align one end of the negative pressure straw (3) with the inner cavity of the limiting sleeve (2), and align the docking block (403) sleeved on the outer surface of the negative pressure straw (3) with the corresponding structural groove (402) on the docking seat (401). S2. Push the docking block (403) along the opening direction of the structural groove (402) so that the sliders (405) on both sides of the docking block (403) slide into the inner cavity of the corresponding groove (406) until the docking block (403) is completely inserted into the inner cavity of the structural groove (402). At this time, one end of the negative pressure suction tube (3) passes through the inner cavity of the limiting sleeve (2) and extends to the side of the limiting sleeve (2) away from the hook body (1). S3. Rotate the side plate (407) so that the side plate (407) rotates around the hinge until it abuts against the inner wall of the corresponding mounting groove (408) to complete the closed positioning of the side plate (407); S4. Use an external tool to drive the vertical slot block (412) to rotate, which drives the screw (409) to rotate synchronously. Under the threaded transmission, the screw (409) moves axially toward the inner cavity of the structural slot (402) and pushes the insert block (411) to move toward the docking block (403). During this process, the insert block (411) slides along the guide rod (410) without relative rotation until the insert block (411) is inserted into the corresponding insertion hole (404), thus completing the locking of the docking block (403) and the docking seat (401). S5. During the operation, the negative pressure source is connected to the negative pressure suction tube (3), and the tissue is pulled by the hook body (1) while the fluid in the surgical area is suctioned out through the negative pressure suction tube (3). After the operation or when changing to a different diameter negative pressure suction tube (3), the vertical groove block (412) is rotated in the opposite direction to make the insertion block (411) disengage from the insertion hole (404). After opening the side plate (407), the docking block (403) is pulled out along the sliding groove (406) to realize the quick disassembly and separation of the negative pressure suction tube (3) and the hook body (1).

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