Adjustable anal dilatation device for gastrointestinal surgery

Abstract

The invention belongs to the field of medical instruments, and particularly relates to an adjustable anal dilatation device for gastrointestinal surgery, which comprises a mounting plate and a lubricating oil tank, one side of the mounting plate is fixedly connected with a handle, one side of the mounting plate is fixedly connected with a plurality of fixing rods I, one end of each fixing rod I is fixedly connected with an adjusting disc, and the other end of each fixing rod I is fixedly connected with a connecting rod. A plurality of sliding grooves are evenly formed in the adjusting disc in the circumferential direction, adjusting rods are connected to the sliding grooves in a sliding mode, one ends of the adjusting rods are fixedly connected with expansion plates, and a plurality of oil outlet holes are formed in the expansion plates. By means of the inner and outer double-lubricating assembly, before the dilation plate enters the anus of a patient, lubricating oil can be evenly smeared on the surface of the dilation plate through cooperation of the splash-proof shell and the elastic cloth, dead corners caused by manual smearing of the lubricating oil are avoided, the dilation plate can easily enter the anal canal of the patient, and the patient can conveniently and rapidly enter the anal canal of the patient. And the anus of the patient is prevented from being abraded and bleeding due to overlarge friction force.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically an adjustable anal dilator for gastrointestinal surgery. Background Technology

[0002] In gastrointestinal surgery, it is often necessary to use an anal dilator to open the patient's anus during examinations, diagnoses, or surgical treatments, in order to obtain a clear field of vision and a safe operating channel for accurate diagnosis and treatment.

[0003] Patent CN213527062U discloses a novel adjustable anal dilator for gastrointestinal surgery. Its features include: an expansion mechanism, support plates, and a support sleeve; the expansion mechanism includes a spreader, a shaft, and a gripping tube; the spreader includes a movable disc I, a movable disc II, a movable rod I, and a movable rod II; movable rod I is hinged to movable disc I and then to movable rod II, and movable rod II is hinged to movable disc II; four movable rods I and II form one spreader; two spreaders are sleeved on the shaft; the gripping tube is threaded to the shaft; the support plate is a long strip with an arc-shaped upper surface and a raised rectangular piece on the lower surface that is hinged to movable rod II; the lower surface of the support plate has a sliding groove that is slidably hinged to movable rod II of another spreader; the support sleeve is an elastic rubber sleeve that fits over the outer surface of the four support plates. This patent is used for dilating the rectum after gastrointestinal surgery, relieving rectal contraction, and stimulating defecation.

[0004] However, the above technical solutions still have the following shortcomings in practical applications: To prevent the anal dilator from causing abrasions and bleeding, medical staff apply lubricant to its surface to reduce friction between the dilator and the anus. However, improper application can lead to uneven lubrication, creating blind spots that may still cause abrasions during subsequent use. Furthermore, once the dilator is inserted into the anal canal, the lubricant is quickly absorbed by the mucous membrane and diluted with tissue fluid, causing its lubrication effect to rapidly diminish during the procedure. Since the dilator is already inside the patient, effective replenishment is impossible. This leaves the dilator surface insufficiently lubricated or even dry when withdrawn, greatly increasing the risk of injury to the anus and anal canal. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes an adjustable anal dilator for gastrointestinal surgery.

[0006] The technical solution adopted by the present invention to solve its technical problem is: an adjustable anal dilator for gastrointestinal surgery, including a mounting plate and a lubricating oil tank. A handle is fixedly connected to one side of the mounting plate, and multiple fixing rods are fixedly connected to one side of the mounting plate. An adjusting plate is fixedly connected to one end of each fixing rod. Multiple sliding grooves are evenly arranged on the adjusting plate along the circumference, and adjusting rods are slidably connected to the sliding grooves. An expansion plate is fixedly connected to one end of each adjusting rod, and multiple oil outlet holes are provided on the expansion plate. It also includes internal and external dual lubrication components; The internal and external dual lubrication assembly includes a rotating plate rotatably mounted on one side of the bottom of the mounting plate. A splash shield is slidably connected to one side of the rotating plate. An annular tube is fixedly sleeved on the splash shield. Multiple nozzles are arranged circumferentially on the annular tube. The nozzles penetrate the splash shield. A handle is rotatably mounted in the middle of one side of the adjusting disc. Multiple connecting rods are slidably mounted circumferentially on one end face of the handle. A long tube is fixedly connected to one end of each connecting rod. Multiple nozzles are arranged on one side of the long tube.

[0007] Preferably, one end of the adjusting rod is fixedly connected to a guide post, and a sloping groove plate is rotatably provided in the middle of one side of the adjusting plate. Multiple sloping grooves are provided on the circumferential side of the sloping groove plate, and each guide post slides through one sloping groove.

[0008] Preferably, a worm gear is provided on one side of the outer ring of the inclined groove disk, and a worm is rotatably provided on one side of the mounting plate, the worm meshing with the worm gear on the outer ring of the inclined groove disk.

[0009] Preferably, a motor is fixedly connected to one side of the bottom of the mounting plate, and the output end of the motor is fixedly connected to one end of the rotating plate.

[0010] Preferably, elastic cloth is fixedly connected to the inner edge of both sides of the splash shield, an oil outlet pipe is connected to one side of the annular tube, a pump body is fixedly connected to one side of the mounting plate, the oil outlet end of the pump body is connected to one end of the oil outlet pipe, the oil inlet end of the pump body is connected to the oil inlet pipe, and one end of the oil inlet pipe is connected to the inside of the lubricating oil tank.

[0011] Preferably, multiple fixing rods are fixedly connected to one end face of the adjusting disc, and one end of each fixing rod is fixedly connected to an annular tube. Multiple flexible hoses are connected circumferentially along the upper edge of the annular tube. The flexible hoses pass through one side of the adjusting rod and are connected to one end of the long tube.

[0012] Preferably, a second pump body is fixedly connected to one side of the mounting plate, an oil outlet end of the second pump body is connected to an oil outlet pipe, one end of the oil outlet pipe is connected to one side of an annular pipe, and an oil inlet end of the second pump body is connected to an oil inlet pipe, one end of the oil inlet pipe is connected to the inner cavity of the lubricating oil tank.

[0013] Preferably, a threaded rod is threadedly connected to one side of the lower end of the splash-proof shell, and both ends of the threaded rod are rotatably mounted on a rotating plate. A second motor is fixedly connected to one side of the rotating plate, and the output end of the second motor is fixedly connected to one end of the threaded rod.

[0014] Preferably, it also includes a sealing component; The sealing assembly includes a baffle fixedly connected to one end of the connecting rod. The baffle is slidably connected to the expansion plate, and one end face of the baffle is in contact with the inner surface of the expansion plate.

[0015] Preferably, a cover is provided on one side of the top of the lubricating oil tank.

[0016] The beneficial effects of this invention are as follows: 1. The adjustable anal dilator for gastrointestinal surgery described in this invention utilizes internal and external dual lubrication components. Before the dilator plate enters the patient's anus, lubricating oil is evenly applied to the surface of the dilator plate through the synergistic action of the splash-proof shell and elastic cloth. This avoids blind spots caused by careless operation when medical staff manually apply lubricating oil, allowing the dilator plate to easily enter the patient's anal canal and preventing abrasions and bleeding at the anus due to excessive friction. Furthermore, when the dilator plate is in the anal canal, medical staff can periodically activate the second pump to spray lubricating oil into the patient's anal canal, thereby continuously maintaining the lubrication effect between the dilator plate and the anal canal. This effectively avoids the reduction in lubrication effect caused by rapid absorption of lubricating oil by the mucosa and dilution by mixing with tissue fluid, thus preventing frictional damage to the patient's anus and anal canal when the dilator plate is withdrawn.

[0017] 2. The adjustable anal dilator for gastrointestinal surgery described in this invention utilizes a sealing component. Whenever lubricating oil needs to be sprayed onto the outer surface of the dilator plate, medical personnel can manually turn the handle to move the long tube away from the oil outlet. The baffle covers the oil outlet from the inside of the dilator plate. At this time, when lubricating oil is sprayed onto the surface of the dilator plate, the lubricating oil will not flow out along the oil outlet and will only remain on the surface of the dilator plate, thus ensuring the lubrication effect on the outer surface of the dilator plate. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure at the mounting plate. Figure 3 This is a schematic diagram of the three-dimensional structure at the rotating plate. Figure 4 This is a schematic diagram of the three-dimensional structure of the splash guard; Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustment dial; Figure 6 This is a schematic diagram of a three-dimensional structure of a ring-shaped pipe; Figure 7 This is a schematic diagram of the three-dimensional structure at the expansion plate. Figure 8 This is a schematic diagram of the three-dimensional structure at the oil outlet. Figure 9 yes Figure 8 Enlarged view of a portion of point A in the middle; Figure 10 This is a schematic diagram of the three-dimensional structure of the rotating rod.

[0020] In the diagram: 1. Lubricating oil tank; 2. Handle; 3. Mounting plate; 4. Expansion plate; 5. Rotating plate; 6. Motor 1; 7. Pump body 1; 8. Pump body 2; 9. Oil inlet pipe 1; 10. Oil inlet pipe 2; 11. Worm gear; 12. Oil outlet pipe 1; 13. Ring pipe 1; 14. Baffle; 15. Oil outlet hole; 16. Motor 2; 17. Threaded rod; 18. Oil outlet pipe 2; 19. Adjusting disc; 20. Inclined groove disc; 21. Ring pipe 2; 22. Nozzle 1; 23. Guide column; 24. Fixing rod 1; 25. Fixing rod 2; 26. Adjusting rod; 27. Rotating rod; 28. Handle; 29. ​​Hose; 30. Long pipe; 31. Nozzle 2; 32. Connecting rod; 33. Splash shield; 34. Elastic cloth; 35. Tank cover. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please refer to Figures 1-10 The present invention provides a technical solution: an adjustable anal dilator for gastrointestinal surgery, including a mounting plate 3 and a lubricating oil tank 1. A handle 2 is fixedly connected to one side of the mounting plate 3, and multiple fixing rods 24 are fixedly connected to one side of the mounting plate 3. An adjusting plate 19 is fixedly connected to one end of the fixing rods 24. Multiple sliding grooves are evenly arranged on the adjusting plate 19 along the circumference, and adjusting rods 26 are slidably connected at the sliding grooves. An expansion plate 4 is fixedly connected to one end of the adjusting rods 26, and multiple oil outlet holes 15 are provided on the expansion plate 4. It also includes internal and external dual lubrication components; The internal and external dual lubrication assembly includes a rotating plate 5 rotatably mounted on one side of the bottom of the mounting plate 3. A splash shield 33 is slidably connected to one side of the rotating plate 5. An annular tube 21 is fixedly sleeved on the splash shield 33. Multiple nozzles 22 are arranged circumferentially on the annular tube 21. The nozzles 22 penetrate the splash shield 33. A handle 28 is rotatably mounted in the middle of one side of the adjusting plate 19. Multiple connecting rods 32 are slidably mounted circumferentially on one end face of the handle 28. A long tube 30 is fixedly connected to one end of the connecting rod 32. Multiple nozzles 31 are arranged on one side of the long tube 30.

[0023] In this embodiment, as Figures 2-8 , Figure 10 As shown, one end of the adjusting rod 26 is fixedly connected to a guide post 23, and a sloping groove plate 20 is rotatably arranged in the middle of one side of the adjusting plate 19. Multiple sloping grooves are arranged along the circumferential direction on the sloping groove plate 20, and each guide post 23 slides through one sloping groove.

[0024] A worm gear is provided on one side of the outer ring of the inclined groove disk 20, and a worm 11 is rotatably provided on one side of the mounting plate 3. The worm 11 meshes with the worm gear on the outer ring of the inclined groove disk 20.

[0025] Motor 6 is fixedly connected to one side of the bottom of mounting plate 3, and the output end of motor 6 is fixedly connected to one end of rotating plate 5.

[0026] Elastic cloth 34 is fixedly connected to the inner edge of both sides of the splash shield 33. One side of the annular tube 21 is connected to the oil outlet pipe 18. One side of the mounting plate 3 is fixedly connected to the pump body 7. The oil outlet end of the pump body 7 is connected to one end of the oil outlet pipe 18. The oil inlet end of the pump body 7 is connected to the oil inlet pipe 10. One end of the oil inlet pipe 10 is connected to the inside of the lubricating oil tank 1.

[0027] Multiple fixing rods 25 are fixedly connected to one end face of the adjusting plate 19. One end of the multiple fixing rods 25 is fixedly connected to an annular tube 13. Multiple flexible hoses 29 are connected along the circumferential direction of the annular tube 13. The flexible hoses 29 pass through one side of the adjusting rod 26 and are connected to one end of the long tube 30.

[0028] Pump body 2 8 is fixedly connected to one side of mounting plate 3. The oil outlet end of pump body 2 8 is connected to oil outlet pipe 1 12. One end of oil outlet pipe 1 12 is connected to one side of annular pipe 1 13. The oil inlet end of pump body 2 8 is connected to oil inlet pipe 1 9. One end of oil inlet pipe 1 9 is connected to the inner cavity of lubricating oil tank 1.

[0029] A threaded rod 17 is threadedly connected to one side of the lower end of the splash shield 33. Both ends of the threaded rod 17 are rotatably mounted on the rotating plate 5. A second motor 16 is fixedly connected to one side of the rotating plate 5. The output end of the second motor 16 is fixedly connected to one end of the threaded rod 17.

[0030] Specifically, when using existing anal dilators, medical staff apply lubricant to the surface to reduce friction between the dilator and the anus, preventing abrasions and bleeding. However, improper application can lead to uneven lubrication, creating blind spots that may still cause abrasions during subsequent use. Furthermore, once the dilator is inserted into the anal canal, the lubricant is rapidly absorbed by the mucous membrane and diluted with tissue fluid, causing a rapid decrease in lubrication during the procedure. Since the dilator is already inside the patient, effective replenishment is impossible. This leaves the dilator surface insufficiently lubricated or even dry when withdrawn, greatly increasing the risk of injury to the anus and anal canal.

[0031] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: In the initial state, the multiple expansion plates 4 are fitted together to form a cylindrical structure with curved ends. The splash shield 33 is aligned with the axis of this cylindrical structure. Then, the controller on the mounting plate 3 starts the second motor 16, which drives the threaded rod 17 to rotate, causing the splash shield 33 to move laterally. The multiple expansion plates 4 pass through the circular hole in the center of the splash shield 33. Because the elastic cloth 34 is made of elastic material, its inner edge is tightly pressed against the surface of the multiple expansion plates 4, and the elastic cloth 34 deforms with the curved surface.

[0032] During the lateral movement of the splash guard 33, the pump body 7 is activated, which draws out the lubricating oil from the lubricating oil tank 1. The lubricating oil then passes through the oil inlet pipe 10, the oil outlet pipe 18, and the annular pipe 21 before being sprayed out from multiple nozzles 22, causing the lubricating oil to adhere to the surface of the expansion plate 4. Furthermore, because the splash guard 33 and the elastic cloth 34 work together to wrap the expansion plate 4, the lubricating oil will not splash to the surrounding area. At the same time, because the elastic cloth 34 is in contact with the surface of the expansion plate 4, the edge of the elastic cloth 34 will also come into contact with the lubricating oil. Therefore, when the elastic cloth 34 passes over the surface of the expansion plate 4, it will smooth out the lubricating oil, thereby ensuring that the lubricating oil is evenly applied to the surface of the expansion plate 4, thus avoiding dead corners caused by manual application of lubricating oil.

[0033] After the surface of the expansion plate 4 is evenly coated with lubricating oil, the splash shield 33 is driven to move laterally away from the expansion plate 4. Then, the motor 6 drives the rotating plate 5 to rotate 90 degrees, so that the rotating plate 5 is vertically downward, so as to avoid the expansion plate 4 being blocked by the splash shield 33 and other structures, thus affecting its use.

[0034] At this point, medical staff can hold handle 2 and insert the dilation plate 4 into the patient's anus. Due to the lubricating oil, the dilation plate 4 can easily enter the patient's anal canal, thus avoiding abrasions and bleeding caused by excessive friction. Subsequently, medical staff manually rotate the worm gear 11, which, through the transmission between the worm gear 11 and the worm teeth, causes the inclined groove plate 20 to rotate. This, in turn, drives multiple guide columns 23 to move, causing multiple adjusting rods 26 to move radially simultaneously. This separates the multiple dilation plates 4, dilating the patient's anus. Furthermore, the movement distance of the dilation plates 4 can be adjusted according to the actual situation, making it quite flexible and convenient.

[0035] When the dilator plate 4 is in the anal canal, medical staff can periodically activate pump 8 to extract lubricating oil. The lubricating oil then passes through inlet pipe 9, outlet pipe 12, ring pipe 13, hose 29, and long pipe 30 before being sprayed out from multiple nozzles 31 and outlet holes 15, thus continuously maintaining lubrication between the dilator plate 4 and the anal canal. This effectively avoids the reduction in lubrication effect caused by rapid absorption of lubricating oil by the mucosa and dilution by mixing with tissue fluid, thereby preventing frictional damage to the patient's anus and anal canal when the dilator plate 4 is withdrawn.

[0036] In this embodiment, as Figures 8-10 As shown, it also includes a sealing component; The sealing assembly includes a baffle 14 fixedly connected to one end of the connecting rod 32. The baffle 14 is slidably connected to the expansion plate 4, and one end face of the baffle 14 is in contact with the inner surface of the expansion plate 4.

[0037] Specifically, in the above embodiments, although the lubricating oil can be evenly applied to the surface of the expansion plate 4 through the cooperation of the splash shield 33 and the elastic cloth 34, since the expansion plate 4 is provided with multiple oil outlet holes 15, when the lubricating oil is sprayed onto the surface of the expansion plate 4, the lubricating oil will also flow into the long pipe 30 along the oil outlet holes 15 and the nozzle 31, which will cause the lubricating oil to be unable to stay on the surface of the expansion plate 4, thereby affecting the lubrication effect.

[0038] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: Whenever it is necessary to spray lubricating oil onto the outer surface of the expansion plate 4, medical staff can manually turn the handle 28, which will cause the rotating rod 27 to rotate, and drive the long tube 30 and the baffle 14 to rotate. The long tube 30 will move away from the oil outlet 15, and at the same time, the baffle 14 will cover the oil outlet 15 from the inside of the expansion plate 4. At this time, when lubricating oil is sprayed onto the surface of the expansion plate 4, the lubricating oil will not flow out along the oil outlet 15, but will only stay on the surface of the expansion plate 4, thus ensuring the lubrication effect on the outer surface of the expansion plate 4.

[0039] After the dilation plate 4 is inserted into the patient's anus, the handle 28 is turned to reset the long tube 30 without affecting the spraying of lubricating oil. Furthermore, when the adjusting rod 26 moves, the connecting rod 32 will also slide on the rotating rod 27 without any movement interference.

[0040] In this embodiment, as Figure 1 As shown, a cover 35 is provided on one side of the top of the lubricating oil tank 1.

[0041] Specifically, lubricating oil can be added to the lubricating oil tank 1 by opening the cover 35, which is quite convenient.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable anal dilator for gastrointestinal surgery, comprising a mounting plate (3) and a lubrication tank (1), characterized in that: A handle (2) is fixedly connected to one side of the mounting plate (3), and multiple fixing rods (24) are fixedly connected to one side of the mounting plate (3). An adjusting plate (19) is fixedly connected to one end of the fixing rod (24). Multiple sliding grooves are evenly arranged along the circumference of the adjusting plate (19), and an adjusting rod (26) is slidably connected to the sliding groove. An expansion plate (4) is fixedly connected to one end of the adjusting rod (26), and multiple oil outlet holes (15) are provided on the expansion plate (4). It also includes internal and external dual lubrication components; The internal and external dual lubrication assembly includes a rotating plate (5) rotatably mounted on one side of the bottom of the mounting plate (3). A splash shield (33) is slidably connected to one side of the rotating plate (5). An annular tube (21) is fixedly sleeved on the splash shield (33). Multiple nozzles (22) are arranged circumferentially on the annular tube (21). The nozzles (22) penetrate the splash shield (33). A handle (28) is rotatably mounted in the middle of one side of the adjusting plate (19). Multiple connecting rods (32) are slidably mounted circumferentially on one end face of the handle (28). A long tube (30) is fixedly connected to one end of the connecting rod (32). Multiple nozzles (31) are arranged on one side of the long tube (30).

2. The adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: One end of the adjusting rod (26) is fixedly connected to a guide post (23), and a sloping groove plate (20) is rotatably provided in the middle of one side of the adjusting plate (19). Multiple sloping grooves are provided on the sloping groove plate (20) along the circumferential direction, and each guide post (23) slides through one sloping groove.

3. The adjustable anal dilator for gastrointestinal surgery according to claim 2, characterized in that: The outer ring of the inclined groove disk (20) is provided with worm teeth on one side, and the mounting plate (3) is rotatably provided with worm (11) on one side. The worm (11) meshes with the worm teeth on the outer ring of the inclined groove disk (20).

4. The adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: A motor (6) is fixedly connected to one side of the bottom of the mounting plate (3), and the output end of the motor (6) is fixedly connected to one end of the rotating plate (5).

5. The adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: Elastic cloth (34) is fixedly connected to the inner edge of both sides of the splash shield (33). One side of the annular tube (21) is connected to the oil outlet pipe (18). One side of the mounting plate (3) is fixedly connected to the pump body (7). The oil outlet end of the pump body (7) is connected to one end of the oil outlet pipe (18). The oil inlet end of the pump body (7) is connected to the oil inlet pipe (10). One end of the oil inlet pipe (10) is connected to the inside of the lubricating oil tank (1).

6. The adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: Multiple fixing rods (25) are fixedly connected to one end face of the adjusting plate (19). One end of the multiple fixing rods (25) is fixedly connected to a ring tube (13). Multiple flexible tubes (29) are connected along the circumferential direction on the ring tube (13). The flexible tubes (29) pass through one side of the adjusting rod (26) and are connected to one end of the long tube (30).

7. An adjustable anal dilator for gastrointestinal surgery according to claim 6, characterized in that: The mounting plate (3) is fixedly connected to a second pump body (8) on one side. The oil outlet end of the second pump body (8) is connected to an oil outlet pipe (12). One end of the oil outlet pipe (12) is connected to one side of an annular pipe (13). The oil inlet end of the second pump body (8) is connected to an oil inlet pipe (9). One end of the oil inlet pipe (9) is connected to the inner cavity of the lubricating oil tank (1).

8. The adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: The splash-proof shell (33) has a threaded rod (17) threadedly connected to one side of its lower end. Both ends of the threaded rod (17) are rotatably mounted on the rotating plate (5). A second motor (16) is fixedly connected to one side of the rotating plate (5). The output end of the second motor (16) is fixedly connected to one end of the threaded rod (17).

9. An adjustable anal dilator for gastrointestinal surgery according to claim 7, characterized in that: It also includes sealing components; The sealing assembly includes a baffle (14) fixedly connected to one end of the connecting rod (32), the baffle (14) being slidably connected to the expansion plate (4), and one end face of the baffle (14) being in contact with the inner surface of the expansion plate (4).

10. An adjustable anal dilator for gastrointestinal surgery according to claim 1, characterized in that: The lubricating oil tank (1) is provided with a tank cover (35) on one side of the top.

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