Lymph node suction fixator

Abstract

The invention discloses a lymph node suction fixator, and relates to the technical field of thoracic surgery. Comprising a suction tube body, a first connecting rod is installed on the suction tube body, a shifting block is installed on the first connecting rod, a supporting assembly is arranged in the suction tube body, a movable rod is rotatably installed in the suction tube body through the supporting assembly, and a first protruding block and a second protruding block which are symmetrical left and right are arranged on the movable rod; and two groups of fixed blocks with an interval are mounted on the movable rod. A first connecting rod is installed on the suction tube body, a shifting block is installed on the first connecting rod, a supporting assembly is arranged in the suction tube body, a movable rod is rotatably installed in the suction tube body through the supporting assembly, and a first protruding block and a second protruding block which are symmetrical left and right are arranged on the movable rod. And two groups of fixed blocks with an interval are mounted on the movable rod.

Description

Technical Field

[0001] The present invention relates to the technical field of thoracic surgery, and particularly to a lymph node aspiration fixator. Background Technique

[0002] At present, lymph node sampling or dissection in pulmonary nodule surgery in thoracic surgery is an important part of thoracic surgery, especially crucial in the treatment of lung cancer. Its core purpose is to evaluate whether there is lymph node metastasis, so as to clarify the tumor stage, guide subsequent treatment and affect the prognosis. In clinical surgical operations, especially in oncological surgery, lymph nodes must be routinely dissected. In actual operation, a certain instrument is usually used to clamp the lymph nodes and then excise them. However, lymph nodes have the characteristic of being relatively soft, and they basically cannot form a relatively stable shape by themselves. Especially under the action of external force, their shape changes extremely unstably. Therefore, it is difficult to remove lymph nodes. In the traditional laparoscopic dissection method, the assistant often helps to expose the lymph node area, and the surgeon uses a suction device to fiddle with or a grasping instrument to clamp the lymph nodes with a suction device, which often causes the lymph nodes to break and bleed, resulting in an unclear surgical field, incomplete lymph node dissection, increasing the risk of residual metastatic lymph nodes and reducing the surgical quality.

[0003] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0004] The purpose of the present invention is to provide a lymph node aspiration fixator to solve the problems raised in the above background technique that the suction device and the lymph node traction instrument are independent, mostly operated by the surgeon and the assistant respectively, and the multi-instrument operation leads to the collision of the incision instruments, increasing the risk of tissue damage. During the lymph node dissection process, the traditional grasping instrument is prone to break the lymph nodes, reducing the surgical safety. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a lymph node aspiration fixator, including a suction tube body. The bottom of the rear end of the suction tube body is rotatably installed with a dial block through a connecting rod I and a torsion spring. A support assembly is arranged inside the suction tube body. The suction tube body rotatably installs a movable rod inside through the support assembly. The outer side of the movable rod is symmetrically fixed with a convex block I and a convex block II, and the rear end of the movable rod is sleeved with two fixed blocks, and the two fixed blocks are located at the front and rear ends of the connecting rod I;

[0006] The support assembly includes a support block fixedly installed on the inner wall of the suction tube body. A telescopic rod is fixedly installed on the support block. The extended end of the telescopic rod is connected to a rotating disk. Symmetric sliding blocks are fixedly installed on the rotating disk, and a sliding groove is formed inside the rotating disk. A second connecting rod is installed in the suction tube body through a protruding plate member in a limited and rotating manner. A first bevel gear is fixedly installed at the front end of the second connecting rod. A guide post is fixedly installed at the tail end of the second connecting rod, and a spiral groove is formed on the guide post. A connecting plate is installed outside the suction tube body, and an expanding plate is fixed at the outer end of the connecting plate. A threaded rod is rotatably installed inside the suction tube body, and a second bevel gear is fixedly installed on the threaded rod. A suction head is arranged at the front end of the suction tube body.

[0007] Preferably, the first convex block 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 convex block and the sliding groove. The outer ends of the sliding blocks at both ends of the rotating disk are arranged in the spiral groove.

[0008] Preferably, the guide post and the first bevel gear form an integral structure through the second connecting rod. The first bevel gear and the second bevel gear are meshed with each other. The guide posts are symmetrically arranged on both sides of the rotating disk. One end of the threaded rod extends into the connecting plate and is threadedly connected thereto. The connecting plate is nested in the inner wall of the suction tube body.

[0009] Preferably, a movable block is slidably installed at the front end of the suction tube body. Limiting blocks are equidistantly arranged on the inner wall of the movable block, and the limiting blocks are symmetrically arranged above and below the horizontal midline of the movable block.

[0010] Preferably, a movable plate is rotatably installed at the front end of the movable block. Equidistant tooth blocks are symmetrically arranged on the surface of the movable block. A connecting block is fixedly installed on the movable block, and a fixing ring is installed on the connecting block.

[0011] Preferably, a rotating gear is fixedly installed on the fixing ring. The rotating gear is meshed with the tooth blocks. An adsorption head is connected to the fixing ring. Negative pressure holes are evenly distributed on the inner wall of the adsorption head, and adjacent adsorption heads on the left and right are fixedly connected through a rod member.

[0012] Preferably, an oil cylinder one is arranged inside the movable block. A piston is movably installed in the oil cylinder one through a pressing rod one. A pressure spring is wound around the outer side of the pressing rod one. The liquid outlet formed on the oil cylinder one is arranged at the front end of the movable block. A hose is sleeved outside the liquid outlet. The upper end of the pressing rod one abuts against the movable plate.

[0013] Preferably, a drainage tube is movably installed in the adsorption head through a spring and a slider. An oil cylinder two is arranged inside the adsorption head, and a pressing rod two is movably installed inside the oil cylinder two.

[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 beneficial effects of the present invention are as follows:

[0016] 1. By combining the suction tube body and the spreading plate into one instrument, the operation of multiple instruments is replaced by a single instrument, reducing the risk of collision between incision instruments. At the same time, through the forward and backward movement of the movable rod inside the suction tube body, the meshing of the bevel gears inside the tube is driven, so that the spreading plate expands and contracts under the action of the threaded rod. The operator can adjust the opening size of the spreading plate by simply pressing the dial block, and can thus quickly adjust the opening and closing size of the spreading plate during the operation to adapt to the thickness of different blood vessel walls inside the human body, facilitating the doctor to quickly reach the affected area.

[0017] 2. When reaching the affected area, by rotating the movable rod, the first convex block on the movable rod disengages from the sliding groove in the rotating disk. At this time, the second convex block at the front end of the movable rod abuts against the limiting block inside the moving block, releasing the clamping connection between the movable rod and the rotating disk. During the movement of the movable rod, the moving block is pushed to move forward and backward, so that the spreading plate expands at the affected area through the self-locking of the threaded rod, and the opening angle of the suction head is adjusted by pressing the dial block, thus coping with lymph nodes of different sizes and facilitating subsequent suction.

[0018] 3. During the process of adjusting the opening size of the suction head, the continuously offset tail end of the suction head continuously squeezes the movable plate, and the offset movable plate pushes the first extrusion rod at the lower end, thereby sending the hydraulic oil inside the first oil rod into the second oil cylinder through the hose, and enabling the second extrusion rod on the second oil cylinder to push the drainage tube to change its position. Thus, 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 It is a schematic diagram of the structure of the suction tube body of the present invention;

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

[0022] Figure 4 It is a schematic diagram of the bottom view structure of the dial block of the present invention;

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

[0024] Figure 6It 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, opening plate; 10, threaded rod; 11, The 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 one; 17. Extrusion rod one; 1701. Pressure spring; 1702. Piston; 18. Hose; 19. Oil cylinder two; 20. Extrusion rod two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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 of the rear end of the suction tube body 1 through a connecting rod 1 21 and a torsion spring 22, a support assembly 4 is arranged inside the suction tube body 1, a movable rod 3 is rotatably mounted inside the suction tube body 1 through the support assembly 4, a convex block 1 31 and a convex block 2 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, and the two fixed 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, a 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, a connecting rod 2 5 is installed inside the suction tube body 1 through a protruding plate member for limiting rotation, a first bevel gear 7 is fixedly mounted on the front end of the connecting rod 2 5, a guide column 6 is fixedly mounted on the tail end of the connecting rod 2 5, 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 projection 31 on the movable rod 3 is arranged in the sliding groove 45 of the rotating disk 43, the movable rod 3 is clamped with the rotating disk 43 through the projection 31 and the sliding groove 45, and the outer ends of the sliding blocks 44 at both ends of the rotating disk 43 are arranged 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 thereto, and the connecting plate 8 is nested in the inner wall of the suction tube body 1;

[0034] By pressing the shift 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 grooves 61 provided 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 the blood vessels and enter the patient's site 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, and limit blocks 1201 are equidistantly arranged on the inner wall of the moving block 12, and the limit blocks 1201 are symmetrical up and down about the horizontal midline of the moving block 12;

[0036] As an implementation manner of the present invention, a movable plate 1202 is rotatably installed at the front end of the moving block 12. Equally spaced tooth blocks 1203 are symmetrically arranged up and down on the surface of the moving block 12. A connecting block 1204 is fixedly installed on the moving block 12, and a fixing ring 1302 is installed on the connecting block 1204;

[0037] As an implementation manner of the present invention, a rotating gear 1303 is fixedly installed on the fixing ring 1302. The rotating gear 1303 meshes with the tooth block 1203. An adsorption head 13 is connected to the fixing ring 1302. Negative pressure holes 1301 are evenly distributed on the inner wall of the adsorption head 13, and adjacent adsorption heads 13 on the left and right are fixedly connected by a rod;

[0038] When the movable rod 3 is rotated, the first convex block 31 disengages from the clamping connection with the rotating disk 43. At this time, the front and rear movement of the movable rod 3 will no longer drive the rotating disk 43 to move back and forth. At the same time, the second convex block 32 on the movable rod 3 contacts the limiting block 1201 inside the moving block 12 at this time. When the movable rod 3 is driven to move by pressing the dial block 2 at this time, the moving block 12 will be pushed to move back and forth, and the opening size of the adsorption head 13 will be changed by the meshing of the tooth block 1203 on the moving block 12 and the rotating gear 1303, so as to facilitate the adsorption of the lymph nodes at the diseased part by the adsorption head 13 and facilitate subsequent surgical operations

[0039] As an implementation manner of the present invention, a first oil cylinder 16 is arranged inside the moving block 12. A piston 1702 is movably installed on the first oil cylinder 16 through a first extrusion rod 17. A pressure spring 1701 is wound around the outside of the first extrusion rod 17. The liquid outlet 15 opened on the first oil cylinder 16 is arranged at the front end of the moving block 12. A hose 18 is sleeved outside the liquid outlet 15, and the upper end of the first extrusion rod 17 abuts against the movable plate 1202;

[0040] As an implementation manner 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 arranged inside the adsorption head 13, and a second extrusion rod 20 is movably installed inside the second oil cylinder 19;

[0041] As an implementation manner 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 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. In the process of the movable rod 3 moving back and forth, the protrusions 31 fixed on both sides thereof are engaged in the sliding grooves 45 provided on the rotating disk 43 through the card connection, thereby driving the rotating disk 43 to move synchronously. In the process of the rotating disk 43 moving back and forth, one end of the sliding blocks 44 fixedly installed at both ends thereof moves along the spiral grooves 61 provided on the guide column 6, thereby pushing the guide column 6 to rotate, and the rotating guide column 6 The column 6 drives the first bevel gear 7 to rotate through the connecting rod 2 5, and the rotating first bevel gear 7 meshes with the second bevel gear 11, so that the second bevel gear 11 rotates and drives the fixedly installed 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 that 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 size of the expansion plate 9, so that the user can reach the patient faster;

[0043] When arriving at the patient's site, the movable rod 3 is rotated a quarter circle, so that the protrusion 1 31 fixed thereon moves along the sliding groove 45 and disengages from the upper notch of the rotating disk 43, and at the same time, the protrusion 2 32 at the front end of the movable rod 3 is engaged with the limit block 1201 in the inner wall of the movable block 12. At this time, the movable rod 3 is pressed to push the movable block 12 to move forward and backward, and the tooth block 1203 on the movable block 12 is meshed with the rotating gear 1303 to change the opening size of the adsorption head 13, so as to better fit the lymph nodes of different sizes, and can more quickly adsorb the lymph nodes at the patient's site, which is convenient for subsequent surgical cutting;

[0044] When the opening size of the suction head 13 is adjusted, if the position of the suction head 13 changes, as the suction 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 squeezing rod 17, so that it transmits the hydraulic oil inside the cylinder 16 through the hose 18 into the cylinder 2 19 through the piston 1702. As the hydraulic oil enters, the squeezing rod 20 on the cylinder 2 19 pushes the drainage tube 14 to move outward, causing the position of the immediate suction head 13 to shift. The drainage tube 14 will always be close to the patient's site to absorb the bleeding generated during the operation. When the suction head 13 is reset, the hydraulic oil is drawn back into the cylinder 16 with the cooperation of the squeezing 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] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lymph node suction fixator, comprising a suction tube body (1), characterized in that: A shift block (2) is rotatably mounted on the bottom of the rear end of the suction tube body (1) 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) comprises 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), a protruding end of the telescopic rod (42) 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 (5) is installed inside the suction tube body (1) through a protruding plate member to limit rotation, and the connecting rod (5) 5) is fixedly mounted on the front end of the connecting rod 2 (5), a guide column (6) is fixedly mounted on the rear end of the connecting rod 2 (5), and a spiral groove (61) is provided on the guide column (6), a connecting plate (8) is mounted 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).

2. A lymph node suction fixator according to claim 1, characterized in that: The first protrusion (31) on the movable rod (3) is arranged in the sliding groove (45) of the rotating disk (43); the movable rod (3) is clamped with the rotating disk (43) via the first protrusion (31) and the sliding groove (45); and the outer ends of the sliding blocks (44) at both ends of the rotating disk (43) are arranged in the spiral grooves (61).

3. A lymph node suction fixator according to claim 2, characterized in that: The guide column (6) forms an integrated structure with the first bevel gear (7) through the second connecting rod (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 thereto; the connecting plate (8) is nested in the inner wall of the suction tube body (1).

4. A lymph node suction fixator according to claim 3, characterized in that: A moving block (12) is slidably mounted on the front end of the suction tube body (1), and limit blocks (1201) are arranged at equal distances on the inner wall of the moving block (12), and the limit blocks (1201) are symmetrical up and down about the horizontal midline of the moving block (12).

5. A lymph node suction fixator according to claim 4, characterized in that: A movable plate (1202) is rotatably mounted on the front end of the moving block (12); 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).

6. A lymph node suction fixator according to claim 5, characterized in that: A rotating gear (1303) is fixedly mounted on the fixed ring (1302), and the rotating gear (1303) is meshed with the tooth block (1203). The fixed ring (1302) is connected to an adsorption head (13), and negative pressure holes (1301) are evenly distributed on the inner wall of the adsorption head (13), and adjacent adsorption heads (13) on the left and right are fixedly connected by a rod.

7. A lymph node suction fixator according to claim 6, characterized in that: An oil cylinder (16) is arranged inside the moving block (12). The oil cylinder (16) is movably mounted with a piston (1702) 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 oil cylinder (16) is arranged at the front end of the moving block (12). A hose (18) is sleeved on the outer side of the liquid outlet (15). The upper end of the extrusion rod (17) is in contact with the movable plate (1202).

8. A lymph node suction fixator according to claim 7, characterized in that: A drainage tube (14) is movably mounted inside the adsorption head (13) via a spring and a slider, a second oil cylinder (19) is arranged inside the adsorption head (13), and a second extrusion rod (20) is movably mounted inside the second oil cylinder (19).

9. A lymph node suction fixator according to claim 8, 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 (20) and the second oil cylinder (19) abuts against the tail end of the drainage tube (14).

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