A liver negative pressure suction device

Abstract

The present application belongs to the field of medical devices, and particularly relates to a liver negative pressure suction device, which comprises a negative pressure suction device, a multi-cavity negative pressure pipeline, a control device, a negative pressure pipeline and a negative pressure joint. The flexible silica gel ring is used as the negative pressure suction device. The device is first placed into the cavity through a puncture of a laparoscope, and is then placed between the liver and the abdominal cavity diaphragm of a patient. The liver and the abdominal cavity diaphragm are then attracted together through negative pressure. The abdominal cavity diaphragm is lifted by a pneumoperitoneum device, and the liver is pulled away from the stomach, so as to achieve the purpose of facilitating minimally invasive surgery of the stomach. The device can monitor the pressure change in real time during the process of pulling the liver, and is provided with an alarm device, which can remind medical staff to adjust in time, so as to ensure the suction effect and minimize the damage to the liver.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a liver negative pressure suction device. Background Technology

[0002] For minimally invasive gastric surgery, since the liver is located in the upper part of the stomach, it is often necessary to reposition the liver before the surgery to facilitate the minimally invasive operation. Most of the repositioning instruments in the existing technology are rigid, which not only increases the difficulty of placement, but also makes the traction method time-consuming and laborious. While pushing open the liver, it is easy to puncture into the organs, increasing the risk of organ damage.

[0003] Patent CN112168247A discloses a liver retractor for laparoscopy, including a connecting ring, an inflation mechanism, a connecting mechanism, and a sealing mechanism. The inflation mechanism inflates the balloon to lift the liver. However, due to the complexity of the human body, the lifting requires a point of force, which may compress the organ and cause safety accidents. The balloon needs to be continuously supported during the operation, and there is no fixing device, which may cause it to tilt and fail to fix, resulting in the liver falling off. In severe cases, if it falls onto the surgical instruments, it may cause organ damage or the balloon may explode, causing medical accidents. In addition, the expansion of the balloon to lift the liver may also encroach on part of the surgical field.

[0004] Patent CN103002793A discloses a suction-type retractor including a flexible continuous air valve. This flexible continuous air valve forms a closed loop of arbitrary shape and defines one or more inlets leading into the interior of the closed loop, allowing suction to proceed into the interior of the continuous air valve. However, this retractor can only provide a single negative pressure value, and the negative pressure pipeline design is simple. If the negative pressure pipeline bends and becomes blocked, there is a risk of it falling out. Furthermore, there is no monitoring or alarm device for the negative pressure value. If, during surgery, medical staff turn or move the patient, even a small displacement can cause it to loosen and fail to achieve a sealed environment, potentially leading to organ fixation failure and causing medical accidents. Additionally, with only a single negative pressure suction method, prolonged surgery can easily cause organ damage. Moreover, when dealing with obese patients, for example, when suctioning one side of the abdominal diaphragm requires greater pressure, it cannot be adjusted individually; the pressure must be increased across the board, easily leading to irreversible damage to the liver. The suction port acts directly on the organ without protective devices, easily causing excessive local pressure and uneven force distribution, affecting the suction effect and causing local damage.

[0005] Therefore, there is an urgent need for a device that can efficiently traction the liver while minimizing damage during the procedure, and can be adjusted at any time during the operation to ensure the smooth progress of minimally invasive gastric surgery. Summary of the Invention

[0006] To address the problems existing in current technologies, this invention proposes a liver negative pressure suction device. A flexible silicone ring is used as a negative pressure suction device. First, the device is inserted into the cavity through a puncture in the laparoscope and placed between the patient's liver lobe and the peritoneum. Then, negative pressure is used to suction the liver and peritoneum together. The peritoneum is then inflated using a pneumoperitoneum device, pulling the liver away from the stomach, thus facilitating minimally invasive gastric surgery.

[0007] The specific technical solution of the present invention is as follows:

[0008] A liver negative pressure suction device includes a negative pressure aspirator, a multi-chamber negative pressure tubing, a control device, a negative pressure tubing, and a negative pressure connector. The negative pressure aspirator and the multi-chamber negative pressure tubing are an integral structure. The rear end of the multi-chamber negative pressure tubing is connected to the control device, the rear end of the control device is connected to the negative pressure tubing, the rear end of the negative pressure tubing is connected to the negative pressure connector, and the other end of the negative pressure connector is connected to the negative pressure device.

[0009] The negative pressure suction device is provided with an upper negative pressure groove, a lower negative pressure groove, a spring-type suction port, a sealing buffer band, clamping ribs, and external clamping ribs.

[0010] The upper negative pressure groove, lower negative pressure groove, and spring-type suction port are sequentially connected to the upper negative pressure groove suction channel, lower negative pressure groove suction channel, and spring-type suction port suction channel of the multi-cavity negative pressure pipeline.

[0011] Multiple spring-type suction ports are provided, which can be stretched and contracted. They are evenly distributed on the hollow disc inside the negative pressure aspirator. The openings at both ends of the spring-type suction ports are located inside the negative pressure aspirator, and their height is no higher than the height of the sealing buffer strip when no negative pressure is applied. The hollow disc is connected to the suction cavity of the spring-type suction ports. To prevent the hollow disc from being sucked flat and blocked, multiple protrusions are evenly arranged vertically inside the hollow area. The protrusions are hemispherical. After the hollow disc is attached, the protrusions provide support, and negative pressure can still pass through the spherical gaps, preventing the remaining spring-type suction ports from becoming ineffective after blockage.

[0012] The sealing buffer band is set around the outermost edge of the negative pressure suction device. During the suction operation, the sealing buffer band will first contact the abdominal diaphragm and liver respectively. The sealing buffer band is hollow and made of soft, deformable material. After deformation, it can increase the contact area and achieve a better sealing effect. At the same time, a ring of support columns is set inside the sealing buffer band. The support columns are higher than the upper and lower negative pressure grooves, which can prevent the upper and lower negative pressure grooves from directly contacting the organs for too long and causing damage.

[0013] The clamping rib is located on the inner side of the front end of the negative pressure suction device, and there is one rib.

[0014] The external clamping ribs are located in the middle of the outside of the negative pressure suction device, and the number is set to 4 or more, evenly distributed.

[0015] The negative pressure suction device is made of silicone.

[0016] The multi-chamber negative pressure pipeline includes an upper negative pressure groove suction chamber, a spring-type suction port suction chamber, and a lower negative pressure groove suction chamber.

[0017] As a preferred option, the multi-cavity negative pressure pipeline is set with cavities on both sides to reduce the wall thickness. Because the local wall thickness is thin, it will deform first when squeezed, changing the stress point and preventing the compression of the pipeline from causing the main cavity to close.

[0018] The multi-chamber negative pressure pipeline is made of one of the following materials: silicone, PVC, or PU.

[0019] The control device is equipped with an upper negative pressure groove suction cavity plug, a spring-type suction port suction cavity plug, a lower negative pressure groove suction cavity plug, a negative pressure pipeline plug, a pressure control valve button, a pressure display screen, and a solenoid valve; the control device is powered by an external power source.

[0020] Furthermore, the control device is also equipped with a buzzer that is synchronously connected to the pressure display screen. When air leakage occurs, one side detaches causing a sudden drop in pressure inside the corresponding cavity, or the negative pressure suction pressure is too high, the pressure display screen emits a warning color, and the buzzer sounds an alarm to remind medical staff to check and handle the situation in a timely manner.

[0021] The front end of the control device is connected to a multi-chamber negative pressure pipeline, and the rear end is connected to a negative pressure pipeline; the negative pressure pipeline is connected to a negative pressure connector; the other end of the negative pressure connector is connected to a negative pressure device.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The present invention uses negative pressure suction to attract the liver and peritoneum together, and uses a pneumoperitoneum device to support the peritoneum, thereby realizing the displacement of the liver, which facilitates laparoscopic surgery. In multi-stage suction, organs can be relaxed for a short time to alleviate excessive suction. In addition, the negative pressure suction device in the present invention is made of silicone, which greatly reduces the damage to the liver compared with the mechanical means used in the prior art to support and pull the liver.

[0024] (2) This invention is used in conjunction with laparoscopic surgery. It is inserted into the cavity through a puncture port of the laparoscope, without the need for additional abdominal surgical incisions or the establishment of additional surgical channels. It has minimal impact on the surgical field of view and does not require support or fixation.

[0025] (3) The negative pressure suction device in this invention is provided with an upper negative pressure groove and a lower negative pressure groove, and is equipped with an adjustment device. By observing the pressure display screen, the pressure change can be monitored in real time. At the same time, an alarm device is provided to remind medical staff to adjust in time, ensuring the suction effect. Furthermore, a spring-type suction port is provided. By utilizing its deformation, the liver can be slowly released, while avoiding damage to the organs caused by long-term negative pressure suction. The pressure is divided into three independent cavities for release, which can be adjusted individually, and can be compatible with different patients to achieve better fixation effect. Attached Figure Description

[0026] Figure 1 This is an overall sectional view of the present invention;

[0027] Figure 2 This is a cross-sectional view of the negative pressure suction device and the multi-chamber negative pressure pipeline in this invention;

[0028] Figure 3 This is a top view of the negative pressure suction device and the multi-chamber negative pressure pipeline in this invention;

[0029] Figure 4 This is a cross-sectional view of the multi-cavity negative pressure pipeline in this invention;

[0030] Figure 5 This is a cross-sectional view of the negative pressure pipeline in this invention;

[0031] Figure 6 This is a schematic diagram of the control device structure in this invention;

[0032] Figure 7 This is a schematic diagram of the internal flow distribution of the control device in this invention;

[0033] Figure 8 This is a schematic diagram illustrating the attraction effect during the use of the present invention;

[0034] Figure 9 This is a schematic diagram illustrating the pressure release process during the use of this invention.

[0035] In the diagram: 1 is the negative pressure suction device, 101a is the upper negative pressure groove, 101b is the lower negative pressure groove, 102 is the sealing buffer strip, 103 is the spring-type suction port, 104 is the clamping rib, 105 is the external clamping rib, 106 is the protrusion, 106a is the hollow disc, 107 is the support column, 2 is the multi-chamber negative pressure pipeline, 201 is the upper negative pressure groove suction channel, 202 is the spring-type suction port suction channel, 203 is the lower negative pressure groove suction channel, 3 is the control device, 301 is the upper negative pressure groove suction channel plug, 302 is the spring-type suction port suction channel plug, 303 is the lower negative pressure groove suction channel plug, 304 is the negative pressure pipeline plug, 305 is the pressure control valve button, 306 is the pressure display screen, 307 is the solenoid valve, 308 is the buzzer, 4 is the negative pressure pipeline, 5 is the negative pressure connector, 6 is the liver, and 7 is the abdominal diaphragm. Detailed Implementation

[0036] The technical solution of the present invention will be further described below with reference to specific embodiments. These embodiments are only used to illustrate the technical solution of the present invention in more detail and should not be construed as limiting the scope of protection of the present invention.

[0037] like Figure 1 As shown, the present invention provides a liver negative pressure suction device, including a negative pressure suction device 1, a multi-chamber negative pressure tubing 2, a regulating device 3, a negative pressure tubing 4, and a negative pressure connector 5. The negative pressure suction device 1 and the multi-chamber negative pressure tubing 2 are integral structures. The rear end of the multi-chamber negative pressure tubing 2 is connected to the regulating device 3. The rear end of the regulating device 3 is connected to the negative pressure tubing 4. The rear end of the negative pressure tubing 4 is connected to the negative pressure connector 5. The other end of the negative pressure connector 5 is connected to the negative pressure device.

[0038] like Figure 2 , Figure 3 As shown, the negative pressure suction device 1 is provided with an upper negative pressure groove 101a, a lower negative pressure groove 101b, a spring-type suction port 103, a sealing buffer band 102, a clamping rib 104, and an external clamping rib 105.

[0039] The upper negative pressure groove 101a, lower negative pressure groove 101b, and spring-type suction port 103 are sequentially connected to the upper negative pressure groove suction channel 201, lower negative pressure groove suction channel 203, and spring-type suction port suction channel 202 of the multi-cavity negative pressure pipeline 2.

[0040] Multiple spring-type suction ports 103 are provided, and can be specifically adopted as follows: Figure 2 The bellows structure shown can realize the stretching and contraction of the spring-type suction port 103; the spring-type suction port 103 is evenly distributed on the hollow disk 106a inside the negative pressure suction device 1, and the openings at both ends of the spring-type suction port 103 are set inside the negative pressure suction device 1, and its height is not higher than the height of the sealing buffer strip 102 when no negative pressure is applied.

[0041] The hollow disc 106a is connected to the suction cavity 202 of the spring-type suction port. To prevent the hollow disc 106a from being sucked flat and blocked, multiple protrusions 106 are evenly arranged inside the hollow area. The protrusions 106 are hemispherical. After the hollow disc 106a is attached, it is supported by the protrusions 106, and negative pressure can still pass through the spherical gap to prevent the spring-type suction port 103 from failing after being blocked.

[0042] The sealing buffer strip 102 is arranged in a circle on the outermost side of the negative pressure suction device 1. During the suction operation, the sealing buffer strip 102 will first contact the abdominal diaphragm 7 and the liver 6 respectively. The sealing buffer strip 102 is hollow and made of soft material, which can be deformed. After deformation, it can increase the contact area and achieve a better sealing effect. At the same time, a ring of support columns 107 is provided inside the sealing buffer strip 102. The support columns 107 are higher than the upper negative pressure groove 101a and the lower negative pressure groove 101b, which can prevent the upper negative pressure groove 101a and the lower negative pressure groove 101b from directly contacting the organs for too long and causing damage.

[0043] The clamping rib 104 is located on the inner side of the middle front end of the negative pressure suction device 1, and there is one rib.

[0044] The external clamping ribs 105 are located in the middle part of the outside of the negative pressure suction device 1, and the number is set to 4 or more, evenly distributed.

[0045] The negative pressure suction device 1 is made of silicone.

[0046] like Figure 4 As shown, the multi-chamber negative pressure pipeline 2 includes an upper negative pressure groove suction chamber 201, a spring-type suction port suction chamber 202, and a lower negative pressure groove suction chamber 203.

[0047] As a preferred embodiment, the two sides of the multi-cavity negative pressure pipeline 2 are set as cavities to reduce the wall thickness. Because the local wall thickness is thin, it will deform first when squeezed, change the stress point, and prevent the compression of the pipeline from causing the main cavity to close.

[0048] The multi-chamber negative pressure pipeline 2 is made of one of the following materials: silicone, PVC, or PU.

[0049] like Figure 6 , Figure 7 As shown, the control device 3 is equipped with an upper negative pressure groove suction cavity plug 301, a spring-type suction port suction cavity plug 302, a lower negative pressure groove suction cavity plug 303, a negative pressure pipeline plug 304, a pressure control valve button 305, a pressure display screen 306, a solenoid valve 307, and a buzzer 308 that is synchronously connected to the pressure display screen 306; the control device 3 is powered by an external power source.

[0050] The front end of the control device 3 is connected to the multi-chamber negative pressure pipeline 2, and the rear end is connected to the negative pressure pipeline 4; the negative pressure pipeline 4 is connected to the negative pressure connector 5; Figure 5 This is a cross-sectional view of the negative pressure connector 5, the other end of which is connected to a negative pressure device.

[0051] The specific implementation method is as follows:

[0052] Using surgical forceps to clamp the clamping rib 104 of the negative pressure aspirator 1, the negative pressure aspirator 1 is inserted into the patient's body through the puncture port or incision, and placed between the liver 6 and the abdominal diaphragm 7 under endoscopic observation. The position of the negative pressure aspirator 1 is adjusted by clamping the external clamping rib 105. The negative pressure device is connected through the negative pressure connector 5 to perform negative pressure aspiration. The negative pressure is diverted through the negative pressure pipeline 4 and the regulating device 3 to the three cavities of the multi-cavity negative pressure pipeline 2, namely the upper negative pressure groove aspiration cavity 201, the lower negative pressure groove aspiration cavity 203, and the spring-type aspiration port aspiration cavity 202, and the three cavities act on the upper negative pressure groove 101a, the lower negative pressure groove 101b, and the spring-type aspiration port 103, respectively. When using it, first open the spring-loaded suction port 103, and use the upper and lower spring-loaded suction ports 103 to suction the liver 6 and the abdominal diaphragm 7 respectively, and observe the surgical field effect. If a sufficient surgical field is obtained, first open the lower negative pressure groove 101b to suction the liver 6, and after slightly lifting it at the bottom, open the upper negative pressure groove 101a to suction the abdominal diaphragm 7, and then close the spring-loaded suction port 103.

[0053] The control device 3 has a four-way design, with the negative pressure pipeline plug 304 branching to the upper negative pressure groove suction cavity plug 301, the spring-type suction port suction cavity plug 302, and the lower negative pressure groove suction cavity plug 303. Each plug is connected to one of the three cavities of the multi-cavity negative pressure pipeline 2. By pressing the pressure control valve button 305, the internal solenoid valve 307 can be controlled to squeeze the internal pipeline to different degrees, achieving different negative pressure values, or the negative pressure of the pipeline can be completely shut off. At the same time, the pressure display screen 306 can be connected to each cavity through pressure sensors to display the pressure value of each cavity.

[0054] Furthermore, the control device 3 is equipped with a buzzer 308 that is synchronously connected to the pressure display screen 306. When there is an air leak, a detachment on one side causing a sudden drop in pressure inside the corresponding cavity, or excessive negative pressure suction, the pressure display screen 306 will emit a warning color, and the buzzer 308 will sound an alarm to remind medical staff to check and handle the situation in a timely manner.

[0055] During prolonged surgery, a brief release of the liver 6 is necessary to prevent damage caused by prolonged negative pressure suction. This can be achieved by opening the pressure control valve button 305 corresponding to the intermediate spring-loaded suction port 103 to release the negative pressure, and then closing the pressure control valve button 305 corresponding to the lower negative pressure groove 101b. The deformation of the spring-loaded suction port 103 allows the liver 6 to descend slowly. Alternatively, the pressure control valve button 305 corresponding to the upper negative pressure groove 101a can be closed to release pressure on the abdominal wall. When continuing the surgery, the negative pressure value is increased by adjusting the pressure control valve button 305 corresponding to the intermediate spring-loaded suction port 103, bringing the liver 6 closer to the abdominal diaphragm 7. Then, the pressure control valve buttons 305 corresponding to the upper negative pressure groove 101a and the lower negative pressure groove 101b are opened to complete the negative pressure suction fixation again.

[0056] After the surgery, the pressure inside each cavity can be adjusted using the pressure control valve button 305 to slowly lower the liver 6. Specifically, open the pressure control valve button 305 corresponding to the middle spring suction port 103 to increase the negative pressure value, adjust the pressure control valve button 305 corresponding to the lower negative pressure groove 101b to decrease the negative pressure value of the lower negative pressure groove 101b, lower the liver 6 first, and then adjust the pressure control valve button 305 corresponding to the upper negative pressure groove 101a to decrease the negative pressure value of the upper negative pressure groove 101a. After the liver 6 has descended, close the pressure control valve button 305 corresponding to the upper negative pressure groove 101a. After the liver 6 is in place, close the pressure control valve button 305 corresponding to the spring suction port 103 and remove the negative pressure suction device.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the spirit and principle of the present invention without any creative effort should be included within the protection scope of the present invention.

Claims

1. A liver negative pressure suction device, characterized in that, It includes a negative pressure aspirator (1), a multi-chamber negative pressure pipeline (2), a control device (3), a negative pressure pipeline (4), and a negative pressure connector (5); the negative pressure aspirator (1) and the multi-chamber negative pressure pipeline (2) are an integral structure, the rear end of the multi-chamber negative pressure pipeline (2) is connected to the control device (3), the rear end of the control device (3) is connected to the negative pressure pipeline (4), the rear end of the negative pressure pipeline (4) is connected to the negative pressure connector (5), and the other end of the negative pressure connector (5) is connected to the negative pressure device; The negative pressure suction device (1) is provided with an upper negative pressure groove (101a), a lower negative pressure groove (101b), a spring-type suction port (103), a sealing buffer band (102), a clamping rib (104), and an external clamping rib (105). The multi-chamber negative pressure pipeline (2) includes an upper negative pressure groove suction chamber (201), a spring-type suction port suction chamber (202), and a lower negative pressure groove suction chamber (203). The upper negative pressure groove (101a), lower negative pressure groove (101b), and spring-type suction port (103) are sequentially connected to the upper negative pressure groove suction channel (201), lower negative pressure groove suction channel (203), and spring-type suction port suction channel (202) of the multi-cavity negative pressure pipeline (2); Multiple spring-type suction ports (103) are provided and evenly arranged on the hollow disc (106a) inside the negative pressure suction device (1). The openings at both ends of the spring-type suction ports (103) are located inside the negative pressure suction device (1), and their height is not higher than the height of the sealing buffer strip (102) when no negative pressure is applied. The hollow disc (106a) is connected to the suction cavity (202) of the spring-type suction port. Multiple protrusions (106) are evenly arranged in the hollow area, and the protrusions (106) are hemispherical.

2. The liver negative pressure suction device according to claim 1, characterized in that, The multi-cavity negative pressure pipeline (2) is configured with cavities on both sides.

3. The liver negative pressure suction device according to claim 1, characterized in that, The sealing buffer strip (102) is arranged in a circle on the outermost side of the negative pressure suction device (1). The sealing buffer strip (102) is hollow and made of soft material. A ring of support columns (107) is arranged inside the sealing buffer strip (102). The support columns (107) are higher than the upper negative pressure groove (101a) and the lower negative pressure groove (101b).

4. The liver negative pressure suction device according to claim 1, characterized in that, The clamping rib (104) is located on the inner side of the middle front end of the negative pressure suction device (1), and there is one rib; the external clamping rib (105) is located on the middle part of the outside of the negative pressure suction device (1), and there are four or more ribs, which are evenly distributed.

5. The liver negative pressure suction device according to claim 1, characterized in that, The control device (3) is equipped with an upper negative pressure groove suction cavity plug (301), a spring-type suction port suction cavity plug (302), a lower negative pressure groove suction cavity plug (303), a negative pressure pipeline plug (304), a pressure control valve button (305), a pressure display screen (306), and a solenoid valve (307).

6. The liver negative pressure suction device according to claim 1, characterized in that, The control device (3) is equipped with a buzzer (308) that is synchronously connected to the pressure display screen (306).

7. The liver negative pressure suction device according to claim 1, characterized in that, The negative pressure suction device (1) is made of silicone; the multi-chamber negative pressure pipeline (2) is made of one of silicone, PVC, or PU.

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