Surgical device for adaptively controlling residual stomach volume in sleeve gastrectomy under laparoscope

Abstract

The utility model discloses a residual stomach volume self-adaptive control operation device in sleeve gastrectomy under a laparoscope, which relates to the technical field of medical instruments and comprises a main machine, a gas pipeline and a special balloon stomach tube. The main machine comprises a pressure intensity monitoring module and an inflation and deflation module, the specially-made balloon stomach tube is connected with the inflation and deflation module and the pressure intensity monitoring module in the main machine through a gas pipeline, the specially-made balloon stomach tube comprises a hose, an adjustable balloon is arranged at one end of the hose, and the other end of the hose is communicated with the gas pipeline. The adjustable balloon is used for supporting the stomach wall, laparoscopic sleeve gastrectomy is completed according to the shape and the size of the adjustable balloon, the volume of the residual stomach is planned before the operation, the operation curative effect is improved, the shape of the residual stomach is standardized, and serious complications of stomach sac stenosis and obstruction after the operation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a surgical device for self - adapting control of the residual gastric volume during laparoscopic sleeve gastrectomy. Background Technique

[0002] At present, obesity has become the most severe public health problem globally and is the number one killer endangering human life and health. Especially for the population with metabolic syndrome based on severe obesity, which has a large number and a fast growth rate. For patients with poor conservative treatment effects, minimally invasive weight - loss and metabolic surgery is currently an internationally recognized effective means to cure this disease. The most commonly used surgical method is laparoscopic sleeve gastrectomy.

[0003] During the existing laparoscopic sleeve gastrectomy, the volume and shape of the residual stomach completely depend on the experience of the physician and lack intraoperative guidance, often resulting in excessive or insufficient resection, or an unreasonable shape of the residual stomach, affecting the postoperative curative effect, and even serious complications such as postoperative gastric pouch stenosis or obstruction. Therefore, there is an urgent need for a surgical device for self - adapting control of the residual gastric volume during laparoscopic sleeve gastrectomy to change this situation. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art and propose a surgical device for self - adapting control of the residual gastric volume during laparoscopic sleeve gastrectomy. Its advantages are that it can adjust the balloon to support the gastric wall, complete laparoscopic sleeve gastrectomy according to its shape and size, achieve that the residual gastric volume reaches the preoperative plan, improve the surgical curative effect, standardize the shape of the residual stomach, and reduce serious complications such as postoperative gastric pouch stenosis and obstruction.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A surgical device for self - adapting control of the residual gastric volume during laparoscopic sleeve gastrectomy includes a main body, a gas pipeline, and a special balloon gastric tube;

[0007] The main body includes a pressure monitoring module and an inflation - deflation module. The special balloon gastric tube is connected to the inflation - deflation module and the pressure detection module in the main body through the gas pipeline. The special balloon gastric tube includes a flexible tube. One end of the flexible tube is provided with an adjustable balloon, and the other end of the flexible tube is communicated with the gas pipeline.

[0008] With the above technical solution: During use, connect the device and start it. Align the direction marking point of the special balloon gastric tube that is not inflated with the right ear side of the patient. Pass the balloon gastric tube through the pharynx via the nasal cavity or oral cavity and reach the stomach through the esophagus. According to the residual gastric volume planned before the operation, inflate a certain amount of gas into the balloon, calculate the balloon volume based on the monitored pressure and gas volume, and make the balloon volume equal to the residual gastric volume planned before the operation; manually set the target value of the residual gastric volume, and monitor and display the balloon pressure and volume in real time; sample the pressure once every 0.1 second. If the change rate |P1 - P0| / P0 of the current pressure P1 and the pressure P0 sampled last time > 1%, automatically adjust the pressure; if the change rate <= 1%, handle it as measurement error or system noise; due to the change of the gastric cavity pressure during the operation, which causes fluctuations in the balloon pressure and volume, the control module automatically adjusts the inflation and deflation of the balloon to keep the balloon volume unchanged; at the same time, the control module displays the pressure and volume of the balloon in real time; the adjustable balloon can support the gastric wall, and perform laparoscopic sleeve gastrectomy according to its shape and size, so that the residual gastric volume reaches the preoperative plan, improve the surgical efficacy, standardize the shape of the residual stomach, and reduce serious complications such as gastric sac stenosis and obstruction after the operation.

[0009] The present utility model is further configured such that the main unit includes a display and a human-computer interaction module, and the display and the human-computer interaction module is a touch display screen. The display and the human-computer interaction module can conveniently manually set the target value of the residual gastric volume, improving the convenience of operation.

[0010] The present utility model is further configured such that the main unit includes a control module, and the control module is a controller. The controller is used to automatically adjust the inflation and deflation of the balloon to keep the balloon volume unchanged, improving the convenience of operation.

[0011] The present utility model is further configured such that the main unit includes a power management module, and the power management module is a rechargeable lithium battery. The rechargeable lithium battery is used to supply power to the entire device and can be charged at the same time, improving the convenience of operation.

[0012] The present utility model is further configured such that the pressure monitoring module is a pressure monitoring sensor. The pressure monitoring sensor can monitor the pressure inside the adjustable balloon, facilitating the automatic adjustment of the pressure and improving the success rate of the operation.

[0013] The present utility model is further configured such that the outer wall of one end of the hose close to the gas pipeline is provided with a direction marking point. The direction marking point is used to mark the direction of the adjustable balloon, avoiding misoperation by medical staff.

[0014] The beneficial effects of the present utility model are:

[0015] The utility model is applied to laparoscopic sleeve gastrectomy. The system is set so that the initial volume of the special balloon is equal to the residual stomach volume of the patient planned before the operation. During the operation, the system monitors the pressure and volume of the special balloon in real time and adaptively and precisely controls to keep the volume and shape of the special balloon unchanged. The physician supports the gastric wall with the special balloon during the operation and completes the laparoscopic sleeve gastrectomy according to the size of the special balloon, so as to achieve that the residual stomach volume reaches the preoperative plan and improve the surgical efficacy; the shape of the residual stomach is standardized, and serious complications such as postoperative gastric pouch stenosis and obstruction are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of the overall structure of the surgical device for adaptive control of the residual stomach volume during laparoscopic sleeve gastrectomy proposed by the utility model;

[0017] Figure 2 FIG. is a schematic diagram of the system module structure of the surgical device for adaptive control of the residual stomach volume during laparoscopic sleeve gastrectomy proposed by the utility model;

[0018] Figure 3 FIG. is a schematic diagram of the structure of the special balloon gastric tube of the surgical device for adaptive control of the residual stomach volume during laparoscopic sleeve gastrectomy proposed by the utility model when not inflated.

[0019] In the figure: 1. Mainframe; 11. Pressure monitoring sensor; 2. Gas pipeline; 3. Special balloon gastric tube; 31. Adjustable balloon; 32. Hose; 33. Direction marking point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions of the utility model will be further described in detail below in conjunction with the specific embodiments.

[0021] The embodiments of the utility model are described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and should not be construed as a limitation of the utility model.

[0022] Refer to Figures 1-3 , the surgical device for adaptive control of the residual stomach volume during laparoscopic sleeve gastrectomy includes a mainframe 1, a gas pipeline 2 and a special balloon gastric tube 3;

[0023] The mainframe 1 includes a pressure monitoring module and an inflation / deflation module. The special balloon gastric tube 3 is connected to the inflation / deflation module and the pressure detection module in the mainframe 1 through the gas pipeline 2. The special balloon gastric tube 3 includes a hose 32. One end of the hose 32 is provided with an adjustable balloon 31, and the other end of the hose 32 is connected to the gas pipeline 2 in communication.

[0024] In this embodiment, the host 1 includes a display and human-computer interaction module, and the display and human-computer interaction module is a touch display screen; the display and human-computer interaction module can facilitate the manual setting of the target value of the residual stomach volume, improving the convenience of operation; the host 1 includes a control module, and the control module is a controller; the controller is used to automatically adjust the inflation and deflation of the balloon to keep the balloon volume unchanged, improving the convenience of operation; the control module takes the pressure fluctuation within a certain range or the pressure fluctuation within a certain period of time as pressure noise to improve the stability of the system; the host 1 includes a power management module, and the power management module is a rechargeable lithium battery; the rechargeable lithium battery is used to supply power to the entire device and can be charged at the same time, improving the convenience of operation.

[0025] Furthermore, the pressure monitoring module is a pressure monitoring sensor 11, and the pressure monitoring sensor 11 can monitor the pressure inside the adjustable balloon 31, facilitating the automatic adjustment of the pressure and improving the success rate of the operation.

[0026] It is worth mentioning that a direction marking point 33 is provided on the outer wall of the hose 32 near one end of the gas pipeline 2, and the direction marking point 33 is used to mark the direction of the adjustable balloon 31 to avoid misoperation by medical staff.

[0027] Due to the intraoperative pneumoperitoneum and abdominal cavity pressure fluctuations, which affect the pressure and volume of the balloon, the control module monitors the pressure P inside the balloon in real time and automatically controls inflation or deflation to keep the balloon volume unchanged; at the same time, the display and human-computer interaction module displays the real-time pressure and volume of the balloon;

[0028] The functional relationship between the balloon volume V and the pressure P inside the balloon is: V = (m / M)RT / P, where V is the balloon volume, P is the pressure inside the balloon (unit: Pascal), m is the mass of the gas, M is the molar mass of the gas, (m / M) is the number of moles, R is the universal gas constant (R = 8.31 J / mol), T is the temperature of the gas, unit: Kelvin, and the gastric temperature is taken as 37.5 degrees to 38 degrees.

[0029] Working principle: When in use, connect the device and start it. The direction marking point 33 of the special balloon gastric tube 3 that is not inflated is aligned with the patient's right ear side. Insert the balloon gastric tube through the nasal cavity or oral cavity, through the pharynx and into the stomach via the esophagus. According to the residual gastric volume planned before the operation, inflate a certain amount of gas into the balloon. Calculate the balloon volume based on the monitored pressure and gas volume, so that the balloon volume is equal to the residual gastric volume planned before the operation; manually set the target value of the residual gastric volume, and monitor and display the balloon pressure and volume in real time; sample the pressure once every 0.1 second. If the change rate |P1 - P0| / P0 of the current pressure P1 and the pressure P0 sampled last time is > 1%, automatically adjust the pressure; if the change rate <= 1%, it is treated as measurement error or system noise; due to the change of the gastric cavity pressure during the operation, which causes fluctuations in the balloon pressure and volume, the control module automatically adjusts the inflation and deflation of the balloon to keep the balloon volume unchanged; at the same time, the control module displays the pressure and volume of the balloon in real time; the adjustable balloon supports the gastric wall, and the laparoscopic sleeve gastrectomy is completed according to its shape and size, so as to achieve that the residual gastric volume reaches the preoperative plan, improve the surgical efficacy, standardize the shape of the residual stomach, and reduce serious complications such as gastric sac stenosis and obstruction after the operation.

[0030] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy, characterized in that: It includes a host (1), a gas pipeline (2) and a special balloon gastric tube (3); The host (1) comprises a pressure monitoring module and an inflation and deflation module. The special balloon gastric tube (3) is connected to the inflation and deflation module and the pressure detection module in the host (1) via a gas pipeline (2). The special balloon gastric tube (3) comprises a hose (32). An adjustable balloon (31) is provided at one end of the hose (32). The other end of the hose (32) is connected to the gas pipeline (2).

2. The surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy according to claim 1, characterized in that: The host (1) comprises a display and human-computer interaction module, wherein the display and human-computer interaction module is a touch display screen.

3. The surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy according to claim 2, characterized in that: The host (1) comprises a control module, and the control module is a controller.

4. The surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy according to claim 3, characterized in that: The host (1) comprises a power management module, and the power management module is a rechargeable lithium battery.

5. The surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy according to claim 1, characterized in that: The pressure monitoring module is a pressure monitoring sensor (11), and the pressure monitoring sensor (11) can monitor the pressure inside the adjustable balloon (31).

6. The surgical device for adaptively controlling residual gastric volume in laparoscopic sleeve gastrectomy according to any one of claims 1 to 5, characterized in that: A direction marking point (33) is provided on the outer wall of the hose (32) at one end close to the gas pipeline (2), and the direction marking point (33) is used to mark the direction of the adjustable balloon (31).

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