Lymph node suction fixator

Abstract

The present invention discloses a lymph node suction fixer, which relates to the technical field of thoracic surgery. It comprises a suction tube body, on which a connecting rod 1 is installed, on which a shift block is installed, and inside of which a support assembly is provided, the suction tube body is internally provided with a movable rod rotatably installed through the support assembly, the movable rod is provided with a left-right symmetrical protrusion 1 and a protrusion 2, and two groups of fixed blocks with intervals are installed on the movable rod. The suction tube body comprises a connecting rod 1, on which a shift block is installed, and inside of which a support assembly is provided, the suction tube body is internally provided with a movable rod rotatably installed through the support assembly, the movable rod is provided with a left-right symmetrical protrusion 1 and a protrusion 2, and two groups of fixed blocks with intervals are installed on the movable rod.

Description

Technical Field

[0001] The present invention relates to the technical field of thoracic surgery, in particular to a lymph node suction fixator. Background Art

[0002] Lymph node sampling or clearance during thoracic surgery for lung nodules is currently an important component of thoracic surgery, and is particularly crucial in the treatment of lung cancer. Its core purpose is to assess whether lymph nodes are metastatic, thereby clarifying the tumor stage, guiding subsequent treatment, and influencing prognosis. Routine lymph node clearance is required in clinical surgery, especially in tumor surgery. In actual practice, some instruments are usually used to clamp the lymph nodes before resection. However, lymph nodes are inherently soft and cannot form a relatively stable shape. Their shape changes are extremely unstable under the action of external forces, making lymph node removal difficult. Traditional laparoscopic clearance methods often require assistants to assist in exposing the lymph node area. The surgeon uses a suction device to fiddle with or grasp instruments to clamp the lymph nodes, often causing the lymph nodes to break and bleed, resulting in an unclear surgical field and incomplete lymph node clearance. This increases the risk of residual metastatic lymph nodes and reduces surgical quality.

[0003] In response to the above problems, it is urgent to carry out innovative design based on the original foundation. Summary of the Invention

[0004] The purpose of the present invention is to provide a lymph node suction fixator to solve the problem proposed in the above background technology that the suction device and the lymph node traction instrument are independent and are mostly operated separately by the surgeon and the assistant. The operation of multiple instruments leads to collision of incision instruments, increasing the risk of tissue damage. During the lymph node dissection process, traditional grasping instruments are prone to lymph node fragmentation, reducing the safety of the operation. The technical solution of the present invention addresses the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a lymph node suction fixator, comprising a suction tube body, a shift block being rotatably mounted on the bottom rear end of the suction tube body via a connecting rod 1 and a torsion spring, a support assembly being provided inside the suction tube body, a movable rod being rotatably mounted inside the suction tube body via the support assembly, a first protrusion and a second protrusion being symmetrically fixed on the outer side of the movable rod, and two fixing blocks being sleeved on the rear end of the movable rod, the two fixing blocks being located at the front and rear ends of the connecting rod 1;

[0006] The support assembly includes a support block fixedly mounted on the inner wall of the suction tube body, the support block is fixedly mounted with a telescopic rod, the protruding end of the telescopic rod is connected to a rotating disk, a symmetrical sliding block is fixedly mounted on the rotating disk, and a sliding groove is provided inside the rotating disk, the interior of the suction tube body is penetrated by a protruding plate and a connecting rod second is fixedly mounted on the limiting rotation, the front end of the connecting rod second is fixedly mounted with a first bevel gear, the tail end of the connecting rod second is fixedly mounted with a guide column, and a spiral groove is provided on the guide column, a connecting plate is installed on the outside of the suction tube body, and a support plate is fixed on the outer end of the connecting plate, a threaded rod is rotatably mounted on the interior of the suction tube body, and a second bevel gear is fixedly mounted on the threaded rod, and an adsorption head is provided at the front end of the suction tube body.

[0007] Preferably, the first protrusion on the movable rod is arranged in the sliding groove of the rotating disk, the movable rod is clamped with the rotating disk through the first protrusion and the sliding groove, and the outer ends of the sliding blocks at both ends of the rotating disk are arranged in the spiral grooves.

[0008] Preferably, the guide column forms an integrated structure with the first bevel gear through the connecting rod 2, the first bevel gear and the second bevel gear are engaged with each other, the guide column is symmetrically arranged on both sides of the rotating disk, one end of the threaded rod extends into the interior of the connecting plate and is threadedly connected to it, and the connecting plate is nested in the inner wall of the suction tube body.

[0009] Preferably, a moving block is slidably mounted on the front end of the suction tube body, and limiting blocks are equidistantly arranged on the inner wall of the moving block, and the limiting blocks are symmetrical about the horizontal center line of the moving block.

[0010] Preferably, a movable plate is rotatably mounted on the front end of the moving block, and equidistant tooth blocks are symmetrically arranged on the upper and lower surfaces of the moving block. A connecting block is fixedly mounted on the moving block, and a fixing ring is mounted on the connecting block.

[0011] Preferably, a rotating gear is fixedly mounted on the fixed ring, the rotating gear is engaged with the gear block, an adsorption head is connected to the fixed ring, negative pressure holes are evenly distributed on the inner wall of the adsorption head, and the adjacent adsorption heads on the left and right are fixedly connected by a rod.

[0012] Preferably, an oil cylinder 1 is provided inside the movable block, and a piston is movably installed in the oil cylinder 1 through an extrusion rod 1. A pressure spring is surrounded by the outside of the extrusion rod 1. The liquid outlet opened on the oil cylinder 1 is provided at the front end of the movable block, and a hose is sleeved on the outside of the liquid outlet. The upper end of the extrusion rod 1 abuts against the movable plate.

[0013] Preferably, a drainage tube is movably installed inside the adsorption head through a spring and a slider, a second oil cylinder is provided inside the adsorption head, and a second extrusion rod is movably installed inside the second oil cylinder.

[0014] Preferably, the oil inlet of the second oil cylinder is connected to a hose, and one end of the second extrusion rod located outside the second oil cylinder abuts against the tail end of the drainage tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By combining the suction tube and the expansion plate into one instrument, a single instrument replaces multiple instruments, reducing the risk of collision between incision instruments. At the same time, the movable rod moves back and forth inside the suction tube, driving the meshing of the bevel gear inside the tube, thereby causing the expansion plate to expand and contract under the action of the threaded rod. The operator can adjust the expansion plate's size by simply pressing the dial block. This allows the expansion plate to be quickly adjusted during surgery to adapt to the different thicknesses of blood vessel walls in the human body, allowing doctors to quickly reach the patient's site.

[0017] 2. After reaching the patient's site, the movable rod is rotated to disengage the first protrusion on the movable rod from the sliding groove in the rotating disk. At this time, the second protrusion at the front end of the movable rod abuts against the limit block inside the movable block, so that the movable rod is released from the rotating disk. During the movement of the movable rod, the movable block is pushed back and forth, so that the expansion plate is expanded at the patient's site through the self-locking of the threaded rod. The opening angle of the adsorption head is adjusted by pressing the dial block to cope with lymph nodes of different sizes, facilitating subsequent adsorption.

[0018] 3. In the process of adjusting the opening size of the suction head, the tail end of the suction head, which is constantly deflected up and down, continuously squeezes the movable plate. The deflected movable plate pushes the squeezing rod 1 at the lower end, thereby transporting the hydraulic oil inside the oil rod 1 into the oil cylinder 2 through the hose, and the squeezing rod 2 on the oil cylinder 2 pushes the drainage tube to change its position. As a result, no matter how the position of the suction head changes, the drainage tube can fit the surgical site and quickly absorb the blood that appears during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the suction tube structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the movable rod of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the shift block of the present invention when viewed from above;

[0023] Figure 5 This is a schematic diagram of the structure of the movable rod and the rotating disk of the present invention;

[0024] Figure 6This is a schematic diagram of the structure of the movable rod and the moving block of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the rotating disk and the support plate of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the adsorption head and the moving block of the present invention;

[0027] Figure 9 It is a schematic diagram of the cross-sectional structure of the adsorption head of the present invention.

[0028] In the figure: 1, suction tube body; 2, shift block; 21, connecting rod 1; 22, torsion spring; 3, movable rod; 31, protrusion 1; 32, protrusion 2; 33, fixed block; 4, support assembly; 41, support block; 42, telescopic rod; 43, rotating disk; 44, sliding block; 45, sliding groove; 5, connecting rod 2; 6, guide column; 61, spiral groove; 7, first bevel gear; 8, connecting plate; 9, expansion plate; 10, threaded rod; 11, Second bevel gear; 12. Moving block; 1201. Limiting block; 1202. Movable plate; 1203. Gear block; 1204. Connecting block; 13. Adsorption head; 1301. Negative pressure hole; 1302. Fixed ring; 1303. Rotating gear; 14. Drainage tube; 15. Liquid outlet; 16. Oil cylinder 1; 17. Extrusion rod 1; 1701. Pressure spring; 1702. Piston; 18. Hose; 19. Oil cylinder 2; 20. Extrusion rod 2. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-9 The present invention provides a technical solution: comprising a suction tube body 1, a shift block 2 is rotatably mounted on the bottom rear end of the suction tube body 1 via a connecting rod 1 21 and a torsion spring 22, a support assembly 4 is provided inside the suction tube body 1, a movable rod 3 is rotatably mounted inside the suction tube body 1 via the support assembly 4, a first protrusion 31 and a second protrusion 32 are symmetrically fixed on the outer side of the movable rod 3, and two fixing blocks 33 are sleeved on the rear end of the movable rod 3, and the two fixing blocks 33 are located at the front and rear ends of the connecting rod 1 21;

[0031] The support assembly 4 includes a support block 41 fixedly mounted on the inner wall of the suction tube body 1, a telescopic rod 42 fixedly mounted on the support block 41, the protruding end of the telescopic rod 42 is connected to a rotating disk 43, a symmetrical sliding block 44 is fixedly mounted on the rotating disk 43, and a sliding groove 45 is provided inside the rotating disk 43, the interior of the suction tube body 1 is penetrated by a protruding plate and a connecting rod 2 5 is installed for limited rotation, the front end of the connecting rod 2 5 is fixedly mounted with a first bevel gear 7, the tail end of the connecting rod 2 5 is fixedly mounted with a guide column 6, and a spiral groove 61 is provided on the guide column 6, a connecting plate 8 is installed on the outside of the suction tube body 1, and a support plate 9 is fixed on the outer end of the connecting plate 8, a threaded rod 10 is rotatably mounted inside the suction tube body 1, and a second bevel gear 11 is fixedly mounted on the threaded rod 10, and an adsorption head 13 is provided at the front end of the suction tube body 1.

[0032] As an embodiment of the present invention, the protrusion 1 31 on the movable rod 3 is disposed in the sliding groove 45 of the rotating disk 43. The movable rod 3 is engaged with the rotating disk 43 via the protrusion 1 31 and the sliding groove 45. The outer ends of the sliding blocks 44 at both ends of the rotating disk 43 are disposed in the spiral groove 61.

[0033] As an embodiment of the present invention, the guide column 6 forms an integrated structure with the first bevel gear 7 through the connecting rod 2 5, the first bevel gear 7 and the second bevel gear 11 are meshed with each other, the guide column 6 is symmetrically arranged on both sides of the rotating disk 43, one end of the threaded rod 10 extends into the interior of the connecting plate 8 and is threadedly connected to it, and the connecting plate 8 is nested in the inner wall of the suction tube body 1;

[0034] By pressing the dial block 2, it pushes the movable rod 3 to move back and forth inside the suction tube body 1, so that the movable rod 3 drives the rotating disk 43 to move back and forth inside the suction tube body 1 through the telescopic rod 42 through the protrusion 31 set in the sliding groove 45. At the same time, when the rotating disk 43 moves, the sliding blocks 44 fixedly installed on both sides of the rotating disk 43 move along the trajectory in the spiral groove 61 opened on the guide column 6, thereby pushing the guide column 6 to rotate, so that the guide column 6 can drive the threaded rod 10 and the connecting plate 8 to perform threaded movement through the engagement between the first bevel gear 7 and the second bevel gear 11, so that the connecting plate 8 slides back and forth on the inner wall of the suction tube body 1, thereby changing the opening and closing of the expansion plate 9, making it convenient for doctors to expand blood vessels and enter the patient's area more quickly.

[0035] As an embodiment of the present invention, a moving block 12 is slidably mounted on the front end of the suction tube body 1. Limiting blocks 1201 are equidistantly provided on the inner wall of the moving block 12. The limiting blocks 1201 are symmetrical about the horizontal midline of the moving block 12.

[0036] As an embodiment of the present invention, a movable plate 1202 is rotatably mounted on the front end of the moving block 12, and equidistant tooth blocks 1203 are symmetrically arranged on the upper and lower surfaces of the moving block 12. A connecting block 1204 is fixedly mounted on the moving block 12, and a fixing ring 1302 is mounted on the connecting block 1204.

[0037] As an embodiment of the present invention, a rotating gear 1303 is fixedly mounted on the fixed ring 1302, and the rotating gear 1303 is meshed with the gear block 1203. The fixed ring 1302 is connected to the adsorption head 13, and negative pressure holes 1301 are evenly distributed on the inner wall of the adsorption head 13. The adjacent adsorption heads 13 on the left and right are fixedly connected by a rod.

[0038] When the movable rod 3 is rotated, the protrusion 1 31 is disengaged from the engagement with the rotating disk 43. At this time, the forward and backward movement of the movable rod 3 will no longer drive the rotating disk 43 to move forward and backward. At the same time, the protrusion 2 32 on the movable rod 3 is in contact with the limit block 1201 inside the movable block 12. At this time, when the movable rod 3 is driven to move by pressing the dial block 2, the movable block 12 is pushed to move forward and backward, and the tooth block 1203 on the movable block 12 is engaged with the rotating gear 1303 to change the opening size of the adsorption head 13, thereby facilitating the adsorption of the lymph nodes at the patient's site by the adsorption head 13, thereby facilitating the subsequent surgical operation.

[0039] As one embodiment of the present invention, a cylinder 16 is provided inside the movable block 12. A piston 1702 is movably mounted on the cylinder 16 via an extrusion rod 17. A pressure spring 1701 surrounds the outer side of the extrusion rod 17. A liquid outlet 15 provided on the cylinder 16 is provided at the front end of the movable block 12. A hose 18 is sleeved on the outer side of the liquid outlet 15. The upper end of the extrusion rod 17 abuts against the movable plate 1202.

[0040] As an embodiment of the present invention, a drainage tube 14 is movably installed inside the adsorption head 13 through a spring and a slider, a second oil cylinder 19 is provided inside the adsorption head 13, and a second extrusion rod 20 is movably installed inside the second oil cylinder 19;

[0041] As an embodiment of the present invention, the oil inlet of the second oil cylinder 19 is connected to the hose 18 , and one end of the second extrusion rod 20 located outside the second oil cylinder 19 abuts against the tail end of the drainage tube 14 .

[0042] Working principle: In the process of sending the suction tube body 1 into the patient's body, due to the complexity and changeability of the inner wall of the blood vessel, it is necessary to press the dial block 2 to drive the movable rod 3 to move back and forth inside the suction tube body 1. During the movement of the movable rod 3, the protrusions 31 fixed on both sides thereof are engaged in the sliding grooves 45 provided on the rotating disk 43, thereby driving the rotating disk 43 to move synchronously. During the movement of the rotating disk 43, one end of the sliding blocks 44 fixed at both ends thereof moves along the spiral grooves 61 provided on the guide column 6, thereby pushing the guide column 6 to rotate. The column 6 drives the first bevel gear 7 to rotate through the connecting rod 2 5. The rotating first bevel gear 7 meshes with the second bevel gear 11, causing the second bevel gear 11 to rotate and drive the fixed threaded rod 10 to rotate. When the threaded rod 10 rotates, the connecting plate 8 is nested on the side wall of the suction tube body 1 and cannot rotate, so it moves up and down along the threaded rod 10, thereby pushing the expansion plate 9 to open and close. The doctor can adjust the pressing force according to the thickness of the different blood vessel walls to control the opening and closing of the expansion plate 9, so that the user can reach the patient site faster.

[0043] When reaching the patient's site, the movable rod 3 is rotated a quarter circle, so that the fixed protrusion 1 31 moves along the sliding groove 45 and disengages from the upper notch of the rotating disk 43. At the same time, the protrusion 2 32 at the front end of the movable rod 3 engages with the limit block 1201 in the inner wall of the movable block 12. At this time, pressing the dial block 2 and the movable rod 3 will push the movable block 12 to move back and forth, and the tooth block 1203 on the movable block 12 engages with the rotating gear 1303 to change the opening size of the adsorption head 13, thereby better fitting lymph nodes of different sizes, and being able to more quickly adsorb the lymph nodes at the patient's site, facilitating subsequent surgical cutting.

[0044] When the size of the adsorption head 13 is adjusted to open, if the position of the adsorption head 13 changes, as the adsorption head 13 rotates on the fixed ring 1302, its tail end will squeeze the movable plate 1202, causing the movable plate 1202 to shift in position. The shifted movable plate 1202 presses down the downward extrusion rod 17, so that it transmits the hydraulic oil inside the oil cylinder 16 through the hose 18 into the oil cylinder 2 19 through the piston 1702. As the hydraulic oil enters, the extrusion rod 2 20 on the oil cylinder 2 19 pushes the drainage tube 14 to move outward, causing the position of the immediate adsorption head 13 to shift. The drainage tube 14 will always be close to the patient's area to absorb the bleeding generated during the operation. When the adsorption head 13 is reset, the hydraulic oil is drawn back into the oil cylinder 16 with the cooperation of the extrusion rod 17 and the pressure spring 1701, and the drainage tube 14 will also be reset under the action of the spring and the slider.

[0045] Any content not described in detail in this specification is prior art known to those skilled in the art. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings and are intended solely for ease of description and simplification. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation and are therefore not to be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified or limited, the terms "connected" and "connected" are to be understood broadly, meaning, for example, fixedly connected, detachably connected, or integrally connected; mechanically connected, electrically connected; directly connected, or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention on a case-by-case basis.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lymph node suction fixator, comprising a suction tube body (1), characterized in that: The bottom of the rear end of the suction tube body (1) is rotatably mounted with a shift block (2) via a connecting rod (21) and a torsion spring (22); a support assembly (4) is provided inside the suction tube body (1); a movable rod (3) is rotatably mounted inside the suction tube body (1) via the support assembly (4); a convex block (31) and a convex block (32) are symmetrically fixed on the outer side of the movable rod (3); and two fixed blocks (33) are sleeved on the rear end of the movable rod (3); the two fixed blocks (33) are located at the front and rear ends of the connecting rod (21); The support assembly (4) includes a support block (41) fixedly mounted on the inner wall of the suction tube body (1), a telescopic rod (42) fixedly mounted on the support block (41), the protruding end of the telescopic rod (42) is connected to a rotating disk (43), a symmetrical sliding block (44) fixedly mounted on the rotating disk (43), and a sliding groove (45) is provided inside the rotating disk (43), and a connecting rod 2 (5) is installed inside the suction tube body (1) through a protruding plate to limit rotation, a first bevel gear (7) is fixedly mounted on the front end of the connecting rod 2 (5), and a guide column (6) is fixedly mounted on the tail end of the connecting rod 2 (5), and a spiral The suction tube body (1) is provided with a connecting plate (8) on the outside, and a support plate (9) is fixed to the outer end of the connecting plate (8). The suction tube body (1) is provided with a threaded rod (10) for rotation inside, and a second bevel gear (11) is fixed on the threaded rod (10). The front end of the suction tube body (1) is provided with an adsorption head (13). The upper protrusion (31) of the movable rod (3) is provided in the sliding groove (45) of the rotating disk (43). The movable rod (3) is connected to the rotating disk (43) through the protrusion (31) and the sliding groove (45). The outer ends of the sliding blocks (44) at both ends of the rotating disk (43) are provided in the spiral groove (61). The guide column (6) forms an integrated structure with the first bevel gear (7) through the second connecting rod (5), and the first bevel gear (7) and the second bevel gear (11) are meshed with each other. The guide column (6) is symmetrically arranged on both sides of the rotating disk (43). One end of the threaded rod (10) extends into the interior of the connecting plate (8) and is threadedly connected to it. The connecting plate (8) is nested in the inner wall of the suction tube body (1). A moving block (12) is slidably installed at the front end of the suction tube body (1). A limiting block (1201) is equidistantly arranged on the inner wall of the moving block (12). The limiting block (1201) is symmetrical about the horizontal center line of the moving block (12). The moving block (1 2) is rotatably mounted with a movable plate (1202) at the front end, and equidistant tooth blocks (1203) are symmetrically arranged on the surface of the moving block (12) above and below, and a connecting block (1204) is fixedly mounted on the moving block (12), and a fixing ring (1302) is mounted on the connecting block (1204), and a rotating gear (1303) is fixedly mounted on the fixing ring (1302), and the rotating gear (1303) and the tooth block (1203) are engaged with each other, and an adsorption head (13) is connected to the fixing ring (1302), and negative pressure holes (1301) are evenly distributed on the inner wall of the adsorption head (13), and the adjacent adsorption heads (13) on the left and right are fixedly connected by a rod.

2. The lymph node suction and fixation device according to claim 1, characterized in that: An oil cylinder (16) is provided inside the movable block (12), and a piston (1702) is movably installed on the oil cylinder (16) through an extrusion rod (17). A pressure spring (1701) surrounds the outer side of the extrusion rod (17). The liquid outlet (15) provided on the oil cylinder (16) is provided at the front end of the movable block (12), and a hose (18) is sleeved on the outer side of the liquid outlet (15). The upper end of the extrusion rod (17) abuts against the movable plate (1202).

3. The lymph node suction and fixation device according to claim 1, characterized in that: A drainage tube (14) is movably installed inside the adsorption head (13) via a spring and a slider. A second oil cylinder (19) is provided inside the adsorption head (13). A second extrusion rod (20) is movably installed inside the second oil cylinder (19).

4. The lymph node suction and fixation device according to claim 3, characterized in that: The oil inlet of the second oil cylinder (19) is connected to the hose (18), and one end of the second extrusion rod (20) located outside the second oil cylinder (19) abuts against the tail end of the drainage tube (14).

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