Air pressure type hepatic duodenal ligament blood flow blocking belt

Abstract

The utility model discloses an air pressure type hepatic duodenal ligament blood flow blocking belt which comprises a blocking belt body, the blocking belt body is a hollow cavity formed by connecting a blocking belt inner layer and a blocking belt outer layer in a sealed mode, the blocking belt inner layer is a soft layer, the blocking belt outer layer is a tensile layer, and the blocking belt inner layer is a hollow layer. The two ends of the blocking belt body are connected in a bonding or buckling mode. A connecting catheter is arranged on the blocking belt body, the connecting catheter is detachably connected with a pressurizing device through a connector, the pressurizing device is connected with pressure sensing detection equipment through a pressure conduction pipe, and the data output end of the pressure sensing detection equipment is connected with the data input end of an anesthesia monitor. The pressure for blocking the blood flow of the hepatic duodenal ligament is accurately regulated and controlled by monitoring the air pressure in the blocking belt, the blocking belt body is of a hollow structure formed by an inner layer material and an outer layer material, after pressurization, the inner layer of the blocking belt makes full contact with tissue, the contact area is increased, the pressure intensity is reduced, and tissue damage is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a pneumatic hepatoduodenal ligament blood flow blocking band. Background Technology

[0002] Hepatoduodenal ligament occlusion is one of the most commonly used and effective methods for controlling intraoperative bleeding during hepatectomy. Currently, the occlusion method often involves wrapping a urinary catheter or rubber tube around the hepatoduodenal ligament, and tightening the catheter or tube to block blood flow. The main drawbacks of this method are: First, the tightening force of the catheter or tube is inaccurate, relying on the surgeon's experience. This can lead to incomplete blood flow occlusion if the tightening force is insufficient, increasing intraoperative bleeding; conversely, excessive tightening force can damage the vascular endothelium or bile ducts. Second, in laparoscopic hepatectomy, especially robot-assisted laparoscopic hepatectomy, the tightening force of the catheter or tube is even more difficult to control, making incomplete occlusion or damage to the vascular endothelium and bile ducts more likely. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a pneumatic hepatoduodenal ligament blood flow blocking band. This blocking band can accurately control the pressure of blocking blood flow in the hepatoduodenal ligament by monitoring the air pressure inside the blocking band, so that during liver resection, the blood flow in the hepatoduodenal ligament can be accurately blocked, while avoiding excessive pressure that could cause damage to the vascular endothelium and bile duct.

[0004] To achieve the above objectives, this utility model discloses a pneumatic hepatoduodenal ligament blood flow blocking band, comprising a blocking band body. The blocking band body is formed by sealing and connecting an inner blocking band layer and an outer blocking band layer to form a hollow cavity. The inner blocking band layer is a soft layer, and the outer blocking band layer is a tensile-resistant layer. The two ends of the blocking band body are connected by adhesive or buckle. The width of the blocking band body is 1cm or 2cm, and the length is 6-8cm.

[0005] The blocking band body is provided with a connecting conduit, and the connecting conduit is detachably connected to a pressurizing device through a connector. The pressurizing device is connected to a pressure sensing and detection device for monitoring the pressure inside the tube through a pressure transmission tube. The data output terminal of the pressure sensing and detection device is connected to the data input terminal of the anesthesia monitor.

[0006] Furthermore, the pressurizing device has an outlet end, and the outlet end of the pressurizing device is connected to an air guide tube, the end of which is provided with a connector; the end of the connecting tube is provided with an insertion interface, and the connector can be inserted into the insertion interface to communicate with it.

[0007] Furthermore, the pressurizing device is also equipped with a valve for adjusting the pressure.

[0008] Furthermore, the pressurizing device is a pressurized balloon.

[0009] Furthermore, the length of the blocking strip body is 6cm.

[0010] Furthermore, the inner layer of the blocking band is a soft layer made of flexible rubber or plastic.

[0011] Furthermore, the outer layer of the blocking strip is a tensile layer made of polyethylene material.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] Firstly, the pneumatic hepatoduodenal ligament blood flow blocking band of this utility model accurately controls the pressure of blocking the blood flow of the hepatoduodenal ligament by monitoring the air pressure inside the blocking band. This ensures that the blood flow of the hepatoduodenal ligament can be accurately blocked during liver resection, while avoiding damage to the vascular endothelium and bile duct caused by excessive pressure.

[0014] Secondly, the inner layer of the pneumatic hepatoduodenal ligament blood flow blocking band of this utility model is a soft layer, and the outer layer is a tensile layer. The hollow structure is formed by the two layers of materials. The outer layer material is not easily deformed and fixes the outer ring diameter. The inner layer material is soft and has a moderate degree of deformation. After pressure is applied, the inner layer of the blocking band is in full contact with the tissue, increasing the contact area, reducing the pressure, and reducing tissue damage.

[0015] Thirdly, the pneumatic hepatoduodenal ligament blood flow blocking band of this utility model transmits pressure data to the anesthesia monitor through a pressure sensing detection device. In robot-assisted laparoscopic liver resection, it can make up for the lack of pressure sensing and more effectively and safely block the hepatoduodenal ligament by accurately controlling the pressure. Attached Figure Description

[0016] Figure 1 A schematic diagram of a pneumatically operated hepatoduodenal ligament blood flow blocking zone;

[0017] In the diagram: 1. Blocking band body, 101. Inner layer of blocking band, 102. Outer layer of blocking band, 103. Hollow cavity, 2. Connecting conduit, 21. Insertion port, 3. Pressurizing device, 4. Outlet end, 41. Pressure transmission tube, 5. Pressure sensing and detection equipment, 6. Anesthesia monitor, 7. Air duct, 8. Valve. Detailed Implementation

[0018] The following examples illustrate the implementation of this utility model in detail, but they do not constitute a limitation on this utility model and are merely illustrative. Furthermore, explaining the advantages of this utility model will make it clearer and easier to understand.

[0019] like Figure 1The illustrated pneumatic hepatoduodenal ligament blood flow blocking band includes a blocking band body 1. The blocking band body 1 is formed by a hollow cavity 103 formed by a sealed connection of an inner blocking band layer 101 and an outer blocking band layer 102. The inner blocking band layer 101 is a soft layer, and the outer blocking band layer 102 is a tensile-resistant layer. The two ends of the blocking band body 1 are connected by adhesive or snap fasteners. Adhesive fasteners can be used; snap fasteners can be used where one end of the blocking band body has a snap fastener, and the other end has multiple spaced slots for connection. The blocking band body 1 has a width of 1-2 cm and a length of 6-8 cm, offering greater applicability. In this embodiment, the blocking band body 1 has a width of either 1 cm or 2 cm and a length of 6 cm. The inner blocking band layer 101 is a soft layer made of flexible rubber or plastic. The outer blocking band layer 102 is a tensile-resistant layer made of polyethylene material. The blocking band body is a hollow structure formed by two layers of material. The outer layer material is not easily deformed and fixes the outer ring diameter; the inner layer material is soft and has a moderate degree of deformation. After pressure is applied, the inner layer material fully adheres to the tissue to transmit pressure, increase the contact area, reduce pressure, and reduce tissue damage.

[0020] The blocking band body 1 is provided with a connecting conduit 2. The connecting conduit 2 is detachably connected to a pressurizing device 4 through a connector 3. The pressurizing device 4 is connected to a pressure sensing device 6 for monitoring the pressure inside the tube through a pressure transmission tube 5. The data output terminal of the pressure sensing device 6 is connected to the data input terminal of the anesthesia monitor 7. In this embodiment, the pressure sensing device 6 can be a pressure sensor.

[0021] The pressurizing device 4 has an outlet end 41, to which an air guide tube 8 is connected. A connector 3 is provided at the end of the air guide tube 8. An insertion port 21 is provided at the end of the connecting tube 2, and the connector 3 can be inserted into and communicate with it. The pressurizing device 4 is also equipped with a valve 9 for adjusting the pressure. In this embodiment, the pressurizing device 4 uses a pressurizing balloon.

[0022] How to use the pneumatic hepatoduodenal ligament blood flow blocking band of this utility model:

[0023] During the procedure, a pneumatic hepatoduodenal ligament blood flow blocking band is wrapped around the hepatoduodenal ligament, and the blocking band connector is adhered. The connecting catheter is led out of the abdominal cavity and connected to the pressurization device and pressure transmission tube through an insertion connector. The pressure transmission tube is used to connect to the pressure sensing detection device, which is then connected to the anesthesia monitor. After calibration, the displayed value is the air pressure inside the blocking band.

[0024] When it is necessary to block blood flow to the hepatoduodenal ligament during surgery, manual pressure is applied using a pressure device to make the air pressure inside the blockage slightly higher than the patient's arterial systolic pressure. This achieves the effect of fully blocking blood flow to the hepatoduodenal ligament (because the portal vein pressure is lower than the arterial pressure, the portal vein is also fully blocked at this time), avoiding damage to the vascular endothelium and bile duct caused by excessive pressure.

[0025] When it is necessary to release the blockage during the operation, simply open the valve of the pressurization device to expel the gas from the blockage zone.

[0026] The above are merely specific embodiments of this utility model. It should be noted that any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Any other aspects not described in detail are prior art.

Claims

1. A pneumatic pressure-type hepatoduodenal ligament blood flow blocking band, characterized in that: The device includes a blocking strip body (1), which is formed by sealing and connecting an inner blocking strip layer (101) and an outer blocking strip layer (102) to form a hollow cavity (103). The inner blocking strip layer (101) is a soft layer, and the outer blocking strip layer (102) is a tensile layer. The two ends of the blocking strip body (1) are connected by adhesive or snap fasteners. The width of the blocking strip body (1) is 1 cm or 2 cm, and the length is 6 to 8 cm. The blocking band body (1) is provided with a connecting conduit (2), and the connecting conduit (2) is detachably connected to a pressurizing device (4) through a connector (3). The pressurizing device (4) is connected to a pressure sensing detection device (6) for monitoring the pressure inside the tube through a pressure transmission tube (5). The data output end of the pressure sensing detection device (6) is connected to the data input end of the anesthesia monitor (7). The pressurizing device (4) has an outlet end (41), and the outlet end (41) of the pressurizing device (4) is connected to an air guide tube (8). The end of the air guide tube (8) is provided with a connector (3); the end of the connecting conduit (2) is provided with an insertion interface (21), and the connector (3) can be inserted into the insertion interface (21) to communicate with it. The inner layer (101) of the blocking strip is a soft layer made of flexible rubber or plastic; the outer layer (102) of the blocking strip is a tensile layer made of polyethylene material.

2. The pneumatic hepatoduodenal ligament blood flow blocking band according to claim 1, characterized in that: The pressurizing device (4) is also equipped with a valve (9) for adjusting the pressure.

3. The pneumatic hepatoduodenal ligament blood flow blocking band according to claim 1 or 2, characterized in that: The pressurizing device (4) is a pressurizing balloon.

4. The pneumatic hepatoduodenal ligament blood flow blocking band according to claim 1 or 2, characterized in that: The length of the blocking strip body (1) is 6cm.

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