Negative pressure type gastrointestinal lifting device for laparoscope

Abstract

The invention discloses a negative pressure type gastrointestinal lifting device for a laparoscope, and particularly relates to the technical field of gastrointestinal lifting, the negative pressure type gastrointestinal lifting device comprises an operating rod, a negative pressure suction assembly is arranged at one end of the operating rod, and at least one auxiliary lifting assembly is arranged in the end, close to the negative pressure suction assembly, of the operating rod; the negative pressure suction assembly comprises a suction head fixed to the operating rod, a plurality of suction holes are formed in the bottom of the suction head and used for sucking the stomach and the intestinal canal in a negative pressure mode, the auxiliary lifting assembly comprises a hollow pipe fixed to the interior of the operating rod, a first sleeve is fixed to the interior of the hollow pipe, and two telescopic assemblies are arranged in the first sleeve. When the intestinal canal is adsorbed under negative pressure, the telescopic assembly stretches out to assist in lifting the intestinal canal. The stomach and intestinal canal lifting device has the functions of lifting the stomach and the intestinal canal, and when the intestinal canal is lifted, on the premise that the surrounding intestinal canal is not damaged, the intestinal canal lifting stability can be improved, the probability that the intestinal canal slides down is greatly reduced, and the operation success rate can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of gastrointestinal lifting, and particularly relates to a negative pressure type gastrointestinal lifting device for laparoscopy. Background Art

[0002] Laparoscopic gastrointestinal lifting is a technique used in laparoscopic surgery to lift and fix the gastrointestinal tract, mainly for exposing the surgical field and facilitating surgical operations. For example, in laparoscopic sleeve gastrectomy, it is necessary to free the gastric wall and lift the gastric body to facilitate cutting and anastomosis; in laparoscopic-assisted intestinal resection and anastomosis, the intestinal tube may need to be lifted outside the abdominal cavity for operation. Laparoscopic gastrointestinal lifting technology reduces surgical trauma, reduces damage to abdominal wall muscles and tissues, significantly reduces postoperative pain, and enables patients to recover normal activities faster. Moreover, by lifting the gastrointestinal tissue, the surgical field is clearer, doctors can handle tissues and blood vessels more accurately, achieve delicate operations, reduce direct damage to the gastrointestinal tissue, and reduce the risk of postoperative complications.

[0003] Currently, intestinal forceps or grasping forceps are usually used to grasp and lift gastrointestinal tissues. The clamping method of intestinal forceps or grasping forceps not only easily causes damage to gastrointestinal tissues, but also easily causes harm to surrounding gastrointestinal tissues during the grasping process. Another method is to use negative pressure adsorption to lift the gastric body or intestinal tube, such as the negative pressure type gastrointestinal lifting devices with publication numbers CN205849489U, CN205849489U, and CN209332140U. However, since the surface of the gastric body or intestinal tube is covered with mucus, the surface of the gastric body or intestinal tube is wet, resulting in poor negative pressure adsorption stability and a high probability of dropping, which easily increases the surgical failure rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a negative pressure type gastrointestinal lifting device for laparoscopy, which has the functions of adsorbing and lifting the gastric body and intestinal tube, and when lifting the intestinal tube, it can improve the stability of intestinal tube lifting without damaging the surrounding intestinal tube, greatly reducing the probability of intestinal tube slipping, and helping to improve the surgical success rate.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A negative pressure type gastrointestinal lifting device for laparoscopy, including an operating rod, one end of the operating rod is provided with a negative pressure suction assembly, the negative pressure suction assembly includes a suction head fixed to the operating rod, and a plurality of suction holes are opened at the bottom of the suction head for negative pressure adsorption of the gastric body and intestinal tube.

[0006] At least one set of auxiliary lifting components is arranged inside the operating rod near the negative pressure suction assembly. The auxiliary lifting components include a hollow tube fixed inside the operating rod, a sleeve one is fixed inside the hollow tube, and two sets of telescopic components are arranged inside the sleeve one. When negative pressure adsorbing the intestinal tube, the telescopic components extend to assist in lifting the intestinal tube.

[0007] Preferably, the telescopic component includes a second sleeve slidably disposed inside the first sleeve, a third sleeve slidably disposed inside the second sleeve, and a sliding rod slidably disposed inside the third sleeve.

[0008] Preferably, two fixing plates are fixed inside the first sleeve between the two second sleeves. Elastic members are connected between the fixing plates and the second sleeves, between the inner wall of the second sleeve and one end of the third sleeve, and between the inner wall of the third sleeve and one end of the sliding rod. When the telescopic component works and extends the operating rod in and out, it is used to assist in lifting the intestinal tract. When the telescopic component does not work, it is completely received inside the operating rod by the elastic force of the elastic members, which is convenient for the operating rod to enter and exit the patient's body.

[0009] Preferably, both ends of the hollow tube are open and the openings communicate with the outside, which is convenient for the telescopic component to extend; an air delivery tube is connected to the outside of the hollow tube and is disposed inside the operating rod. Through holes for gas flow are provided on the first sleeve, the fixing plates, one end of the second sleeve, and one end of the third sleeve. At this time, the gas ejected from the air outlet of the suction pump can enter the second sleeve and the third sleeve through the through holes, thereby driving the second sleeve to slide along the first sleeve, the third sleeve to slide along the second sleeve, and the sliding rod to slide along the third sleeve, so that the telescopic component extends outside the operating rod to assist in lifting the intestinal tract.

[0010] Preferably, an air suction tube communicating with the suction head is disposed inside the operating rod, and a handle is fixed at the other end of the operating rod. Medical staff can hold the handle to facilitate the operating rod to enter and exit the patient's body. The end of the air suction tube away from the suction head and the end of the air delivery tube away from the hollow tube both penetrate through the handle.

[0011] Preferably, a control machine is disposed outside the operating rod, a negative pressure bottle is placed on the control machine, an inlet pipe and an outlet pipe are fixedly connected to the top of the negative pressure bottle; the air suction tube is connected to the inlet pipe through a first connecting pipe; an air suction pump is installed inside the control machine, and the outlet pipe is connected to the air inlet of the air suction pump. By generating negative pressure inside the negative pressure bottle, the air inside the suction head enters the negative pressure bottle to form negative pressure, so that the suction head performs negative pressure adsorption on the gastric body and the intestinal tract.

[0012] Preferably, the air delivery tube is connected to the air outlet of the air suction pump through a second connecting pipe, and the air discharged by the air suction pump enters the first sleeve to drive the telescopic component to extend.

[0013] Preferably, a photographing component is disposed on the outer wall of the end of the operating rod close to the negative pressure suction component. The photographing component includes a mounting plate fixed on the outer wall of the operating rod and a camera fixed on one side of the mounting plate. The connecting line of the camera passes through the mounting plate, the operating rod and the handle and is connected to the control machine to realize visual operation.

[0014] Preferably, a blow-off pipe is further arranged inside the operating rod. One end of the blow-off pipe extends out of the end of the operating rod close to the negative-pressure suction assembly and faces the camera. The other end of the blow-off pipe passes through the mounting plate, the operating rod and the handle and is fixed to the outer wall of the second connecting pipe. Part of the gas in the second connecting pipe is blown towards the camera through the blow-off pipe to blow off the blood and dirt on the camera, improve the shooting clarity and improve the operation accuracy.

[0015] Preferably, the blood and dirt sucked out by the suction pipe flow into the negative-pressure bottle. A filter screen and a waterproof and breathable membrane are fixedly arranged inside the negative-pressure bottle and are distributed up and down. The inlet pipe is at the top of the filter screen, and the outlet pipe penetrates through the filter screen and the waterproof and breathable membrane and extends to the bottom of the waterproof and breathable membrane to prevent the blood and dirt in the negative-pressure bottle from entering the outlet pipe.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0017] 1. The present invention has the functions of adsorbing and lifting the gastric body and intestinal tract. When lifting the intestinal tract, first, the target intestinal tract is sucked by negative pressure and lifted out of the abdominal cavity, and then the telescopic assembly of the auxiliary lifting component extends out of the operating rod and surrounds the lifted intestinal tract to assist in lifting the intestinal tract, realizing the improvement of the stability of intestinal tract lifting without damaging the surrounding intestinal tracts, greatly reducing the probability of intestinal tract slipping, and helping to improve the success rate of the operation;

[0018] 2. When the operating rod enters and exits the patient's body, the auxiliary lifting component is completely accommodated in the operating rod, reducing the harm caused to the patient when the operating rod enters and exits the patient's body;

[0019] 3. By setting the shooting component to enter the abdominal cavity together with the operating rod, visual operation is realized. At the same time, it is convenient to blow off the blood and dirt attached to the camera, improve the shooting clarity and improve the operation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structure diagram of the present invention;

[0021] Figure 2 is Figure 1 the enlarged view of part A in

[0022] Figure 3 is the partial structure of the present invention Figure 1 ;

[0023] Figure 4 is Figure 3 the enlarged view of part B in

[0024] Figure 5 is the partial cross-sectional view of the present invention;

[0025] Figure 6 is the side cross-sectional view of the auxiliary lifting component of the present invention;

[0026] Figure 7 Schematic diagram of the telescopic component of the present invention extending

[0027] Figure 8 Local structure of the present invention Figure 2 ;

[0028] Figure 9 Cross-sectional view of the negative pressure bottle of the present invention

[0029] Description of reference numerals in the drawings:

[0030] 1 Operating rod

[0031] 2 Negative pressure suction assembly, 21 Suction head, 22 Suction holes, 23 Suction pipe

[0032] 3 Auxiliary lifting assembly, 31 Hollow tube, 32 First sleeve, 33 Second sleeve, 34 Third sleeve, 35 Slide rod, 36 Fixed plate, 37 Elastic member, 38 Air delivery pipe

[0033] 4 Handle, 5 Control machine

[0034] 6 Negative pressure bottle, 61 Inlet pipe, 62 Outlet pipe, 63 Filter screen, 64 Waterproof and breathable membrane

[0035] 7 Suction pump, 8 First connecting pipe, 9 Second connecting pipe

[0036] 10 Shooting assembly, 11 Mounting plate, 12 Camera, 13 Connecting wire, 14 Blowing and cleaning pipe Detailed implementation manners

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings

[0038] The present invention provides a negative pressure type gastrointestinal lifting device for laparoscopy as shown in Figures 1 - 9 , which includes an operating rod 1. One end of the operating rod 1 is provided with a negative pressure suction assembly 2, and the other end of the operating rod 1 is fixed with a handle 4. Medical staff can hold the handle 4 to facilitate the operating rod 1 and the negative pressure suction assembly 2 to enter and exit the patient's body

[0039] Specifically, as shown in Figures 1 - 3 , Figure 5 and Figure 8 , the negative pressure suction assembly 2 includes a suction head 21 fixed to the operating rod 1. A plurality of suction holes 22 are formed at the bottom of the suction head 21 for negative pressure adsorption of the gastric body and intestinal tract. An air suction pipe 23 communicating with the suction head 21 is arranged in the operating rod 1, and one end of the air suction pipe 23 away from the suction head 21 penetrates through the handle 4

[0040] Next, a control machine 5 is provided outside the operating rod 1. The control machine 5 is the control system of the electrical equipment of the present invention, and an existing control system can be adopted, which will not be elaborated further here. A negative pressure bottle 6 is placed on the control machine 5. The top of the negative pressure bottle 6 is fixedly connected with an inlet pipe 61 and an outlet pipe 62. The suction pipe 23 is connected with the inlet pipe 61 through a first connecting pipe 8. An attracting pump 7 is installed in the control machine 5, and the outlet pipe 62 is connected to the air inlet of the attracting pump 7.

[0041] The attracting pump 7 is selected as an attracting pump, for example:

[0042] TBP-01 type medical attracting pump: Produced by Ton-Bridge Company, it has the characteristics of miniaturization and intelligence, is designed to be portable, can achieve pulsed suction, enhance the suction effect, and significantly reduce the operation time;

[0043] VAP-1 type medical electric attracting pump: Produced by Yingtai Medical, it is used in medical institutions to suck liquids and / or solids in the human body by negative pressure and can achieve stable output of negative pressure values.

[0044] When lifting the gastric body, for example, in laparoscopic sleeve gastrectomy, it is necessary to free the gastric wall and lift the gastric body to facilitate cutting and anastomosis: First, the operating rod 1 extends into the abdominal cavity and the suction head 21 is placed at the part to be sucked. The attracting pump 7 is started to suck the air in the negative pressure bottle 6, so that negative pressure is generated in the negative pressure bottle 6. As a result, the air in the suction head 21 enters the negative pressure bottle 6 through the suction pipe 23, the first connecting pipe 8, and the inlet pipe 61, and then negative pressure is generated in the suction head 21, which is convenient for the suction head 21 to suck the gastric body, and then the gastric body can be lifted.

[0045] As Figure 3 、 Figure 5 and Figure 6 shown, at least one set of auxiliary lifting components 3 is provided inside one end of the operating rod 1 close to the negative pressure suction component 2; the auxiliary lifting components 3 include a hollow tube 31 fixed inside the operating rod 1. Both ends of the hollow tube 31 are open and communicate with the outside. A first sleeve 32 is fixed inside the hollow tube 31, and two telescopic components are provided inside the first sleeve 32;

[0046] Specifically, the telescopic component includes a second sleeve 33 slidably arranged inside the first sleeve 32. A third sleeve 34 is slidably arranged inside the second sleeve 33, and a sliding rod 35 is slidably arranged inside the third sleeve 34. Two fixing plates 36 are fixed inside the first sleeve 32 between the two second sleeves 33. Through holes for gas flow are opened on the first sleeve 32, the fixing plates 36, one end of the second sleeve 33, and one end of the third sleeve 34;

[0047] Between the fixed plate 36 and the second sleeve 33, between the inner wall of the second sleeve 33 and one end of the third sleeve 34, and between the inner wall of the third sleeve 34 and one end of the sliding rod 35, they are all connected by elastic members 37. The elastic members 37 can be selected as elastic ropes or springs. In the normal state, the telescopic assembly is completely received in the hollow tube 31 under the elastic force of the elastic members 37, which is convenient for the operating rod 1 to enter and exit the patient's body;

[0048] Next, an air delivery pipe 38 is connected to the outside of the hollow tube 31, and the air delivery pipe 38 is arranged inside the operating rod 1. One end of the air delivery pipe 38 away from the hollow tube 31 penetrates through the handle 4, and the air discharged by the suction pump 7 enters the first sleeve 32 to drive the telescopic assembly to extend. If the number of the auxiliary lifting assemblies 3 is set to more than one group, such as Figure 5 shown, then the adjacent first sleeves 32 are connected by a pipe;

[0049] When lifting the intestinal tract, for example, in laparoscopic-assisted intestinal resection and anastomosis, the intestinal tract needs to be lifted out of the abdominal cavity for operation: The second connecting pipe 9 on the air delivery pipe 38 is not connected to the air outlet of the suction pump 7 first. The operating rod 1 is inserted into the abdominal cavity, and the suction pump 7 is started. The suction head 21 first adsorbs and lifts the intestinal tract to be lifted out of the abdominal cavity. During this process, the gas discharged by the suction pump 7 is directly discharged into the environment. Subsequently, the second connecting pipe 9 on the air delivery pipe 38 is connected to the air outlet of the suction pump 7 (quick connection can be achieved using a pipe joint). At this time, the gas ejected from the air outlet of the suction pump 7 enters the first sleeve 32 through the second connecting pipe 9 and the air delivery pipe 38. Subsequently, the gas enters the second sleeve 33 and the third sleeve 34 through the through holes, thereby driving the second sleeve 33 to slide along the first sleeve 32, the third sleeve 34 to slide along the second sleeve 33, and the sliding rod 35 to slide along the third sleeve 34, so that the telescopic assembly extends out of the operating rod 1, as Figure 7 shown. At this time, the two extended telescopic assemblies surround the outside of the intestinal tract lifted by the suction head 21 to assist in lifting the intestinal tract, realizing improving the stability of the intestinal tract lifting without damaging the surrounding intestinal tract, greatly reducing the probability of the intestinal tract slipping, and helping to improve the success rate of the operation;

[0050] After the operation, the second connecting pipe 9 is disconnected from the suction pump 7, and the telescopic assembly is reset under the elastic force of the elastic member 37 and completely received in the hollow tube 31. Then the intestinal tract is put back into the abdominal cavity with the operating rod 1. Since the auxiliary lifting assembly 3 is inside the operating rod 1 when the operating rod enters and exits the patient's body, it is convenient for the operating rod 1 to enter and exit the patient's body, and reduces the harm to the patient when the operating rod 1 enters and exits the patient's body.

[0051] When lifting the gastric body as described above, the telescopic assembly may not extend. Therefore, the second connecting pipe 9 on the air delivery pipe 38 is not connected to the air outlet of the suction pump 7, and the gas discharged by the suction pump 7 can be directly discharged into the environment.

[0052] When the suction head 21 performs negative pressure adsorption, blood stains will also be sucked out. The blood stains will enter the negative pressure bottle 6 through the suction pipe 23, the first connecting pipe 8, and the inlet pipe 61 for collection. As Figure 9 shown, in the present invention, a filter screen 63 and a waterproof breathable membrane 64 are fixedly arranged inside the negative pressure bottle 6 in an up-and-down distribution. The waterproof breathable membrane 64 is a new type of polymer waterproof material with unique breathable and waterproof properties. Its working principle is as follows: the distance between gas molecules is relatively large, and during the diffusion movement process, they can pass through the breathable holes of the waterproof breathable membrane. However, the distance between liquid molecules is smaller than the distance of the breathable holes, and under the action of surface tension, the liquid molecules cannot pass through the waterproof breathable membrane, thus playing a waterproof role.

[0053] The inlet pipe 61 is placed on top of the filter screen 63. The blood stains falling from the inlet pipe 61 will be blocked by the filter screen 63 and the waterproof breathable membrane 64. The gas flows to the bottom inside the negative pressure bottle 6. The outlet pipe 62 penetrates through the filter screen 63 and the waterproof breathable membrane 64 and extends to the bottom of the waterproof breathable membrane 64. Therefore, the gas at the bottom inside the negative pressure bottle 6 will enter the outlet pipe 62, so as to prevent the blood stains in the negative pressure bottle 6 from entering the outlet pipe 62.

[0054] As Figures 2 - 5 shown, a photographing assembly 10 is further arranged on the outer wall of one end of the operating rod 1 close to the negative pressure suction assembly 2. The photographing assembly 10 includes a mounting plate 11 fixed on the outer wall of the operating rod 1 and a camera 12 fixed on one side of the mounting plate 11. The connecting wire 13 of the camera 12 passes through the mounting plate 11, the operating rod 1, and the handle 4 and is connected to the control machine 5. The camera 12 enters the abdominal cavity together with the operating rod 1, and the photographed image is transmitted to the control machine 5 to realize visual operation.

[0055] Furthermore, a dirt blowing pipe 14 is also arranged inside the operating rod 1. One end of the dirt blowing pipe 14 extends out of the outer part of one end of the operating rod 1 close to the negative pressure suction assembly 2 and faces the camera 12. The other end of the dirt blowing pipe 14 passes through the mounting plate 11, the operating rod 1, and the handle 4 and is fixed to the outer wall of the second connecting pipe 9;

[0056] The second connecting pipe 9 is connected to the suction pump 7. Valves can be installed on the second connecting pipe 9 and the dirt blowing pipe 14 to control the on-off of the second connecting pipe 9 and the dirt blowing pipe 14. When the dirt blowing pipe 14 is turned on, the gas ejected by the suction pump 7 enters the dirt blowing pipe 14 through the second connecting pipe 9. The gas in the dirt blowing pipe 14 blows towards the camera 12, which can be used to blow off the blood stains attached to the camera 12, improve the shooting clarity, and improve the operation accuracy.

[0057] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description 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 laparoscopic negative pressure gastrointestinal lifting device, comprising an operating rod (1), characterized in that: A negative pressure suction component (2) is provided at one end of the operating rod (1), and at least one set of auxiliary lifting components (3) is provided inside the end of the operating rod (1) close to the negative pressure suction component (2); The negative pressure suction component (2) comprises a suction head (21) fixed to the operating rod (1), and a plurality of suction holes (22) are provided at the bottom of the suction head (21) for negative pressure adsorption of the stomach body and the intestinal tract; The auxiliary lifting component (3) comprises a hollow tube (31) fixed inside the operating rod (1), a sleeve (32) is fixed inside the hollow tube (31), and two groups of telescopic components are arranged inside the sleeve (32). When negative pressure adsorbs the intestinal tube, the telescopic components are extended to assist in lifting the intestinal tube.

2. The laparoscopic negative pressure gastrointestinal lifting device according to claim 1, characterized in that: The telescopic assembly comprises a sleeve 2 (33) slidably arranged inside the sleeve 1 (32), a sleeve 3 (34) slidably arranged inside the sleeve 2 (33), and a slide rod (35) slidably arranged inside the sleeve 3 (34).

3. The laparoscopic negative pressure gastrointestinal lifting device according to claim 2, characterized in that: Two fixing plates (36) are fixed inside the sleeve one (32) and located between the two sleeve twos (33). The fixing plates (36) and the sleeve two (33), the inner wall of the sleeve two (33) and one end of the sleeve three (34), and the inner wall of the sleeve three (34) and one end of the sliding rod (35) are all connected via elastic members (37).

4. The laparoscopic negative pressure gastrointestinal lifting device according to claim 3, characterized in that: The hollow tube (31) has openings at both ends, and the openings are connected to the outside to facilitate the extension of the telescopic assembly; The outside of the hollow tube (31) is connected to a gas delivery pipe (38), and the gas delivery pipe (38) is arranged inside the operating rod (1). Through holes for facilitating gas flow are provided on the first sleeve (32), the fixing plate (36), one end of the second sleeve (33), and one end of the third sleeve (34).

5. The laparoscopic negative pressure gastrointestinal lifting device according to claim 4, characterized in that: The operating rod (1) is provided with an air suction pipe (23) in communication with the suction head (21); the other end of the operating rod (1) is fixed with a handle (4); the end of the air suction pipe (23) away from the suction head (21) and the end of the air delivery pipe (38) away from the hollow tube (31) both pass through the handle (4).

6. The laparoscopic negative pressure gastrointestinal lifting device according to claim 5, characterized in that: The operating rod (1) is provided with a control machine (5) outside, a negative pressure bottle (6) is placed on the control machine (5), an inlet pipe (61) and an outlet pipe (62) are fixedly connected at the top of the negative pressure bottle (6), and the air intake pipe (23) is connected to the inlet pipe (61) through a connecting pipe (8); The control machine (5) is equipped with a suction pump (7), and the outlet pipe (62) is connected to the air inlet of the suction pump (7). Negative pressure is generated in the negative pressure bottle (6), so that the air in the suction head (21) enters the negative pressure bottle (6) to form negative pressure, so that the suction head (21) performs negative pressure adsorption on the stomach body and the intestinal tract.

7. The laparoscopic negative pressure gastrointestinal lifting device according to claim 6, characterized in that: The air delivery pipe (38) is connected to the air outlet of the suction pump (7) via the second connecting pipe (9), and the air discharged from the suction pump (7) enters the first sleeve (32) to drive the telescopic component to extend.

8. The laparoscopic negative pressure gastrointestinal lifting device according to claim 7, characterized in that: A shooting assembly (10) is provided on the outer wall of one end of the operating rod (1) close to the negative pressure suction assembly (2); the shooting assembly (10) comprises a mounting plate (11) fixed to the outer wall of the operating rod (1) and a camera (12) fixed to one side of the mounting plate (11); a connecting line (13) of the camera (12) passes through the mounting plate (11), the operating rod (1) and the handle (4) and is connected to a control machine (5).

9. The laparoscopic negative pressure gastrointestinal lifting device according to claim 8, characterized in that: A blow-off pipe (14) is also provided inside the operating rod (1), one end of the blow-off pipe (14) extends outside one end of the operating rod (1) close to the negative pressure suction component (2) and faces the camera (12), and the other end of the blow-off pipe (14) passes through the mounting plate (11), the operating rod (1) and the handle (4) and is fixed to the outer wall of the connecting pipe (9), and part of the gas in the connecting pipe (9) is blown toward the camera (12) through the blow-off pipe (14) to blow away blood stains on the camera (12).

10. The laparoscopic negative pressure gastrointestinal lifting device according to claim 6, characterized in that: The blood stains sucked out by the suction pipe (23) flow into the negative pressure bottle (6), and a filter screen (63) and a waterproof breathable membrane (64) are fixed inside the negative pressure bottle (6) and are distributed up and down. The inlet pipe (61) is located at the top of the filter screen (63), and the outlet pipe (62) penetrates the filter screen (63) and the waterproof breathable membrane (64) and extends to the bottom of the waterproof breathable membrane (64), so as to prevent the blood stains in the negative pressure bottle (6) from entering the outlet pipe (62).

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