Abdominal cavity hyperthermic perfusion chemotherapy device

Abstract

The utility model relates to an abdominal cavity hyperthermic perfusion chemotherapy device which comprises an abdominal pressure belt and a perfusion assembly, and the perfusion assembly comprises a drainage tube which penetrates through the abdominal pressure belt and is detachably connected with the abdominal pressure belt; a partition plate is arranged in the drainage tube along the longitudinal axis, the partition plate can divide an inner tube cavity of the drainage tube into an independent perfusion cavity and an independent extraction cavity, a plurality of ribs extending in the length direction of the drainage tube are arranged on the inner tube wall of the perfusion cavity and the inner tube wall of the extraction cavity, and the ribs form a first blank section in the perfusion cavity in a vacancy reserving mode. A second blank section is formed in the extraction cavity, a first baffle and a second baffle which can be opened and closed are arranged at the far end of the partition plate, and when the two baffles are closed, the first baffle can be limited in the first blank section so as to block an outlet of the perfusion cavity; and the second baffle can be limited in the second blank section to block the outlet of the extraction cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a peritoneal hyperthermic perfusion chemotherapy device. Background Art

[0002] Hyperthermic intraperitoneal chemotherapy (HIPEC) is a specialized form of chemotherapy in which a fluid containing chemotherapy drugs is heated to a specific temperature and then infused into the patient's peritoneal cavity for a period of time. This treatment aims to enhance the efficacy of chemotherapy drugs through hyperthermia while also directly targeting tumor cells, killing them and microscopic lesions. The combination of Shurong Yikang mixture and HIPEC has been particularly effective in treating malignant ascites.

[0003] The current technical implementation of intraperitoneal hyperthermic chemotherapy devices mainly faces the following key issues:

[0004] 1. Insufficient fixation stability: Existing devices fail to provide adequate fixation mechanisms, resulting in displacement or dislocation of the drainage tube or syringe assembly due to patient movement or other external forces during treatment. This instability not only affects treatment effectiveness but may also cause additional discomfort or risks to the patient.

[0005] 2. Problems in controlling the flow of liquid in the drainage tube: Existing drainage tubes do not have a rationally designed internal structure to control the flow of chemotherapy drugs and body fluids, resulting in an unsmooth infusion and drainage process, affecting the efficiency of drug distribution and fluid discharge.

[0006] 3. Sealing and anti-backflow issues of drainage tubes: During intraperitoneal hyperthermic perfusion chemotherapy, it is necessary to prevent the backflow of chemotherapy drugs and intraperitoneal fluids. Existing drainage tubes lack effective sealing and one-way flow mechanisms, increasing the risk of infection and drug contamination.

[0007] CN213220358U proposes a device for securing a peritoneal hyperthermic perfusion catheter for ovarian cancer treatment, comprising a fixing plate with straps fixedly connected to both sides of the fixing plate. Two sets of straps are provided with male and female Velcro straps on the sides away from the fixing plate, respectively. A rectangular opening is defined at the top of the fixing plate, and a fixing mechanism corresponding to the catheter is also provided at the top of the fixing plate. The fixing mechanism comprises a lower retaining plate, which is fixedly connected to the top of the fixing plate and located adjacent to the rectangular opening. The upper retaining plate is fixedly mounted on the top of the lower retaining plate. Spherical grooves are defined at the bottom and top of the upper retaining plate, and a rotating ball is rotatably connected within the groove. A positioning tube is fixedly connected to the interior of the rotating ball, which extends outward through the rotating ball. The upper retaining plate is provided with a clamping assembly for the rotating ball.

[0008] The fixing device of this patent is equipped with a fixing plate that can be fixed on the patient's abdomen. The fixing plate can be used to fix the peritoneal hyperthermia perfusion catheter. After the catheter is fixed, it can prevent the patient from shaking, which may cause the perfusion position to be inaccurate, and can prevent the shaking from causing friction between the catheter and the inner wall of the abdominal cavity, which may cause trauma, which is beneficial to the patient's recovery. However, in the fixing device described in this patent, the original design intention was to provide at least two independent mounting slots for catheters used for chemotherapy, so as to perform chemotherapy drug infusion and liquid aspiration respectively. However, the catheter used in this device has only a single function, that is, it can only perform one of the operations of drug infusion or liquid aspiration, and fails to meet the clinical needs of using a single catheter for simultaneous drug injection and liquid aspiration. This design limitation requires medical staff to perform additional work of removing, placing and replacing the catheter when performing intraperitoneal hyperthermia perfusion chemotherapy, thereby increasing the complexity and tediousness of the operation, which may affect the treatment efficiency and patient comfort.

[0009] In addition, on the one hand, due to differences in understanding among those skilled in the art; on the other hand, because the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the utility model does not have the characteristics of these prior arts. On the contrary, the utility model already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Utility Model Content

[0010] In response to the shortcomings of the existing technology, the present application proposes an intraperitoneal hyperthermic perfusion chemotherapy device, which aims to solve one or more technical problems in the existing technology.

[0011] In response to the above-mentioned technical problems, the utility model proposes a peritoneal hot perfusion chemotherapy device, comprising an abdominal pressure belt and a perfusion component, the perfusion component comprising a drainage tube that passes through the abdominal pressure belt and is detachably connected thereto; the drainage tube is provided with a partition inside thereof, the partition being capable of dividing the internal tube cavity of the drainage tube into an independent perfusion cavity and an extraction cavity, the internal tube walls of the perfusion cavity and the extraction cavity are both provided with a plurality of ribs extending along the length direction of the drainage tube, the ribs forming a first blank section in the perfusion cavity in the form of reserved gaps, and forming a second blank section in the extraction cavity, the distal end of the partition being provided with a first baffle and a second baffle that can be opened and closed, wherein, when the two baffles are closed, the first baffle can be limited in the first blank section to block the outlet of the perfusion cavity; the second baffle can be limited in the second blank section to block the outlet of the extraction cavity.

[0012] The interior of the drainage tube of the intraperitoneal hyperthermic perfusion chemotherapy device of the present invention is divided into independent perfusion and extraction chambers by a partition. This design allows for simultaneous perfusion of chemotherapy drugs and extraction of peritoneal fluid, improving the efficiency and convenience of treatment. Ribs arranged on the inner walls of the perfusion and extraction chambers, as well as the first and second blank sections formed by the ribs, provide limited space for the opening and closing of the baffles. This design ensures that the baffles can stably block their respective cavity outlets when closed, effectively controlling the flow of fluid. These ribs enhance the structural strength of the tube wall, reducing the risk of kinking the drainage tube. The presence of the ribs also ensures that the drainage tube maintains good fluid permeability even when folded or under pressure, thanks to the channels formed between adjacent ribs. The distal end of the partition is provided with a first and second baffle that can be opened and closed. This design allows the open and closed state of the fluid channel to be adjusted, further improving the flexibility and precision of treatment.

[0013] According to a preferred embodiment, the shape of the first baffle matches the cross-section of the perfusion cavity, the shape of the second baffle matches the cross-section of the extraction cavity, and the first baffle and the second baffle have opposite opening directions, wherein the opening direction of the first baffle is the same as the flow direction of the liquid in the perfusion cavity, and the opening direction of the second baffle is the same as the flow direction of the liquid in the extraction cavity. When closed, the baffles can fit tightly against the inner wall of the cavity, thereby effectively blocking their respective cavity outlets. This improves the accuracy of fluid flow control, making the infusion of chemotherapy drugs and the extraction of peritoneal fluid more accurate and reliable. In addition, when opened, the baffles can follow the flow direction of the liquid, reducing the resistance to fluid flow and optimizing fluid dynamics. This helps to achieve smoother liquid infusion and extraction, improving the efficiency of treatment.

[0014] According to a preferred embodiment, the first baffle and the second baffle are both equipped with a torsion spring, which is installed on the partition so that the two baffles can close automatically by rotating around a rotating shaft arranged on the partition through the elastic force of the torsion spring, and the first baffle and the second baffle are kept in a closed state by abutting against the end faces of the ribs. Without the need for external operation or force, the baffle can automatically return to the closed state after the infusion or extraction operation is completed, thereby effectively blocking the outlets of the infusion chamber and the extraction chamber. The automatic closing function reduces the steps that medical personnel need to manually operate the opening and closing of the baffle during the operation, thereby improving the convenience and efficiency of the operation. Medical personnel can focus more on other key treatment steps without worrying about the opening and closing status of the baffle.

[0015] According to a preferred embodiment, the perfusion assembly includes an inlet tube and an outlet tube connected to the drainage tube. The inlet tube is connected to the proximal end of the perfusion chamber, and the outlet tube is connected to the proximal end of the extraction chamber. This design ensures that perfusion and extraction operations are performed through completely independent channels, preventing mixing or contamination of different fluids. This also improves treatment efficiency and safety.

[0016] According to a preferred embodiment, the device includes a thermal perfusion chemotherapy device that provides driving force for fluid flow. The device is connected to the perfusion assembly via an inlet and outlet tubes. The thermal perfusion chemotherapy device serves as a power source, providing a stable driving force for fluid flow to the perfusion assembly via the inlet and outlet tubes. This design automates the infusion of chemotherapy drugs and the extraction of peritoneal fluid, improving treatment efficiency and stability.

[0017] According to a preferred embodiment, the surface of the abdominal pressure belt is provided with a fixing seat, in which a through groove is reserved for allowing the drainage tube to pass through, and a notch is provided on the groove wall to accommodate the abutment block. The design of the fixing seat provides a stable installation base for the drainage tube. By passing the drainage tube through the through groove and fixing it, the movement and shaking of the drainage tube in the abdominal cavity can be reduced, thereby reducing the treatment risk caused by changes in the position of the drainage tube. The design of the through groove enables the drainage tube to easily pass through the abdominal pressure belt and be fixed in place without the need for complicated installation steps or tools. At the same time, if the drainage tube needs to be replaced or removed, it can also be conveniently carried out through the through groove, which improves the convenience of medical operations.

[0018] According to a preferred embodiment, the notch defines the radial movement path of the abutment block along the drainage tube, and the side of the abutment block close to the through groove is equipped with an arc-shaped surface that matches the shape of the outer wall of the drainage tube. The design of the notch provides precise guidance and positioning for the position of the abutment block on the drainage tube. It limits the abutment block to move only along the radial direction of the drainage tube, avoiding unnecessary movement or shaking of the abutment block in other directions, thereby ensuring a stable connection between the drainage tube and the abdominal pressure belt. In addition, the arc-shaped surface equipped on the side of the abutment block close to the through groove matches the shape of the outer wall of the drainage tube. This design enables the abutment block to fit tightly on the drainage tube, improving the stability of the fixation.

[0019] According to a preferred embodiment, a spring is connected between the abutment block and the inner wall of the notch. The spring's tensile force allows the abutment block to move away from the drainage tube. The spring connection between the notch and the abutment block provides the necessary elasticity for the abutment block to reset, enabling the abutment block to automatically reset without external force, thereby ensuring that the drainage tube can be easily and removably installed on the mounting base of the abdominal compression belt.

[0020] According to a preferred embodiment, the fixing base is equipped with a locking member, which includes a knob disposed on the outside of the fixing base. The knob is connected to a threaded rod that engages with the fixing base thread. The end of the threaded rod remote from the knob is equipped with a ball that contacts the abutment block. The knob can replace the pressure applied by the threaded rod on the abutment block, thereby isolating the influence of the threaded rod's rotational movement on the axial movement of the abutment block. Medical staff can use the knob to make fine adjustments based on the patient's specific treatment needs and abdominal anatomy to achieve precise control of the drainage tube's stability and safety.

[0021] According to a preferred embodiment, the side of the abdominal compression belt that adheres to the patient's abdomen is equipped with a non-slip pad, and elastic bands are provided on both sides of the fixing base to provide a secure fit. This design not only increases friction between the belt and the patient's skin, preventing slippage during treatment, but also improves patient comfort. The elastic bands on both sides of the belt allow for adjustment based on the patient's body shape, ensuring personalization and comfort while also enhancing the secure fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a simplified schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic structural diagram of the abdominal compression belt of the utility model;

[0024] Figure 3 It is a perspective view of the locking part of the utility model;

[0025] Figure 4 It is a perspective view of the entire perfusion assembly of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the proximal end portion of the perfusion component of the utility model;

[0027] Figure 6 It is a schematic diagram of the upper view of the distal end of the perfusion assembly of the utility model;

[0028] Figure 7 It is a schematic diagram of the bottom view of the distal end of the perfusion assembly of the present invention;

[0029] Figure 8 It is a perspective view of the baffle of the perfusion assembly of the utility model when it is opened;

[0030] Figure 9 It is a schematic diagram of the bottom view of the perfusion component of the utility model when the baffle is opened.

[0031] Reference Signs List

[0032] 100: Abdominal compression belt; 110: Fixing seat; 111: Through groove; 112: Notch; 120: Locking piece; 121: Knob; 122: Threaded rod; 123: Ball; 124: Abutment block; 125: Spring; 130: Anti-slip pad; 140: Elastic band; 200: Perfusion assembly; 210: Drainage tube; 211: Perfusion cavity; 212: Extraction cavity; 213: Partition; 214: Rib; 215: First blank section; 216: Second blank section; 217: First baffle; 218: Second baffle; 220: Liquid inlet pipe; 230: Liquid outlet pipe; 300: Hot perfusion chemotherapy device. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings.

[0034] Definition of orientation: The end of the device away from the operator is the distal end, and the end close to the operator is the proximal end.

[0035] The utility model relates to a device for intraperitoneal hyperthermic perfusion chemotherapy, such as Figure 1 As shown, it includes an abdominal pressure belt 100, an infusion assembly 200, and a thermal infusion chemotherapy device 300. The abdominal pressure belt 100 is used to be fixed to the patient's abdomen, and its function is to maintain the position of the infusion assembly 200 during treatment; the infusion assembly 200 can provide a circulation channel for the infusion and extraction of chemotherapy drugs; the thermal infusion chemotherapy device 300 can heat the chemotherapy drugs to a specific temperature and provide driving force for the infusion and extraction of liquids.

[0036] Preferably, if Figure 1 、 Figure 4 As shown, the perfusion assembly 200 includes a drainage tube 210, which passes through the abdominal pressure belt 100 and is partially placed in the patient's abdominal cavity. It is connected to the abdominal pressure belt 100 by a detachable connection to facilitate installation and disassembly. A partition 213 is provided inside the drainage tube 210, and the partition 213 can extend along the longitudinal axis of the drainage tube 210, so that the tube cavity can be divided into two independent functional areas: a perfusion cavity 211 and an extraction cavity 212. The perfusion cavity 211 is responsible for carrying chemotherapy drugs, while the extraction cavity 212 is used to receive and drain the fluid in the abdominal cavity. This design allows chemotherapy drugs and fluid in the abdominal cavity to flow in their own independent channels, avoiding cross contamination and improving the accuracy of treatment.

[0037] Preferably, if Figures 4 to 6As shown, the inner walls of the perfusion chamber 211 and the extraction chamber 212 are each equipped with a plurality of ribs 214 extending along the length of the drainage tube 210. These ribs 214 enhance the structural strength of the tube wall and reduce the risk of kinking of the drainage tube 210. Furthermore, the presence of the ribs 214 enables the drainage tube 210 to maintain good liquid permeability even when folded or under pressure, thanks to the channels formed between adjacent ribs 214. Furthermore, the ribs 214 provide a limiting space for the baffle by forming a first blank section 215 in the perfusion chamber 211 and a second blank section 216 in the extraction chamber 212. The first blank section 215 and the second blank section 216 are intentionally reserved rib-free areas, allowing the baffle to be accurately positioned in the closed state and to block the outlets of their respective chambers.

[0038] Preferably, if Figures 6 to 9 As shown, the baffles include a first baffle 217 and a second baffle 218 mounted at the distal end of the partition 213. These baffles are designed to open and close by rotating about a pivot axis mounted on the partition 213, ensuring unidirectional fluid flow. When closed, the first baffle 217 is positioned within the first blank section 215, blocking the outlet of the perfusion chamber 211; the second baffle 218 is positioned within the second blank section 216, blocking the outlet of the extraction chamber 212. This design effectively prevents backflow of chemotherapy drugs and intraperitoneal fluid, reducing the risk of infection while ensuring efficient drug distribution and fluid drainage. Specifically, in the intraperitoneal hyperthermic perfusion chemotherapy device of the present invention, the first baffle 217 and the second baffle 218 utilize a mechanical locking mechanism, with torsion springs employed to achieve automatic closing. These torsion springs are preferably mounted on the partition 213 and provide the elastic force required for the baffles to rotate. The torsion springs can be made of stainless steel or nickel-titanium alloy to prevent corrosion from fluid intrusion. When the baffle rotates from the closed position to the open position under the push of the liquid, the torsion spring stores energy and pushes it back to its original state after the liquid thrust disappears, ensuring that the baffle can tightly close the outlets of the perfusion chamber 211 and the extraction chamber 212. This design prevents the backflow of drugs and liquids during chemotherapy, thereby reducing the risk of infection and the possibility of drug contamination. The closing of the baffle relies on the restoring force of the torsion spring, so that the baffle can be accurately positioned on the end surface of the rib 214. In particular, Figure 8As shown, the ribs 214 in the perfusion chamber 211 are slightly shorter than the length of the drainage tube 210, allowing the ribs 214 to leave a gap at the distal end of the perfusion chamber 211 to form a first blank section 215. The end surfaces of the ribs 214 and the distal opening of the perfusion chamber 211 form the two boundaries of the first blank section 215. The ribs 214 in the extraction chamber 212 are arranged in an intermittent manner to form a second blank section 216. In other words, the end surfaces of the two ribs 214 adjacent to the intermittent portion form the two boundaries of the second blank section 216. The end surfaces of the ribs 214 are designed to match the plane of the baffle, ensuring the sealing and stability of the baffle when closed.

[0039] Preferably, if Figures 6 to 9 As shown, the first baffle 217 and the second baffle 218 are shaped to match the cross-sections of the perfusion chamber 211 and the extraction chamber 212, respectively, ensuring perfect sealing and smooth fluid dynamics. Their opening direction also aligns with the direction of fluid flow, significantly improving the efficiency and safety of the device. Specifically, the cross-sectional design of the first baffle 217 is consistent with that of the perfusion chamber 211, allowing it to seamlessly align with the inner wall of the perfusion chamber 211 when closed and abut against the end surfaces of the ribs 214, thereby preventing fluid backflow. The opening direction of the first baffle 217 aligns with the direction of fluid flow within the perfusion chamber 211. This design allows chemotherapy drugs to flow smoothly into the peritoneal cavity, ensuring continuous and uniform fluid flow and avoiding turbulence or blockage caused by improper baffle opening. Similarly, the cross-sectional design of the second baffle 218 is similar. This design not only improves fluid extraction efficiency but also helps maintain unidirectional fluid flow during treatment, preventing potential backflow and cross-contamination.

[0040] Preferably, if Figure 1 As shown, the perfusion assembly 200 is also equipped with an inlet pipe 220 and an outlet pipe 230 connected to the drainage tube 210. The inlet pipe 220 is connected to the proximal end of the perfusion cavity 211. This design allows chemotherapy drugs to flow directly from the hot perfusion chemotherapy device 300 into the perfusion cavity 211 and then be delivered to the patient's abdominal cavity. This connection method not only ensures the directness and efficiency of drug flow, but also reduces the pressure loss or flow resistance that may be caused by bending or turning of the pipeline. Accordingly, the outlet pipe 230 is connected to the proximal end of the extraction cavity 212, so that the liquid produced during the treatment process can be effectively extracted from the abdominal cavity and returned to the hot perfusion chemotherapy device 300 for corresponding treatment. Such a layout optimizes the flow direction of the liquid, avoids backflow and retention, and ensures the continuity and dynamic balance of the treatment process.

[0041] Preferably, if Figure 1As shown, the intraperitoneal hyperthermic perfusion system of the present invention is connected to the hyperthermic perfusion chemotherapy device 300 via an inlet tube 220 and an outlet tube 230. The hyperthermic perfusion chemotherapy device 300 is capable of heating and circulating the perfusate. It heats the formulated perfusate to the specific temperature range required for treatment, such as 44-47°C, and maintains this temperature during treatment to ensure optimal drug efficacy. Furthermore, the device enables dynamic circulation of the perfusate within the peritoneal cavity. By adjusting device parameters, the temperature of the perfusate within the peritoneal cavity is maintained constant within the therapeutic window of 41-43°C. The inlet tube 220 and the outlet tube 230 serve as channels connecting the hyperthermic perfusion chemotherapy device 300 to the perfusion assembly 200, responsible for delivering the heated perfusate to the perfusion chamber 211 and draining the fluid within the peritoneal cavity back to the hyperthermic perfusion chemotherapy device 300, respectively. This design improves the efficiency and safety of the entire perfusion system. The utility model of the intraperitoneal hyperthermic perfusion chemotherapy device can heat the well-proportioned perfusion solution (2000-3000 mL) of 0.9% sodium chloride injection plus 40-80 mg of cisplatin to 44-47°C in a hyperthermic perfusion chemotherapy instrument 300, and then uniformly inject it into the peritoneal cavity through the above-mentioned intraperitoneal hyperthermic perfusion chemotherapy device. During the circulatory perfusion chemotherapy, the perfusion machine is adjusted to circulate the perfusion solution in the peritoneal cavity, and real-time temperature measurement and heating are achieved to ensure that the temperature of the perfusion solution in the peritoneal cavity is constant, maintaining the perfusion solution inlet temperature at 41-43°C. The perfusion time is 120 minutes. After the circulatory perfusion is completed, an appropriate amount of peritoneal effusion is released, the drainage tube 210 is closed, and the patient is instructed to change body position once every 15 minutes or so for 1 hour. After 2 days, the drainage tube 210 is opened. The above treatment is repeated once every 4 days, and 3 times constitute a course of treatment. After the course of treatment, the drainage tube 210 is removed, and the bilateral puncture points are bandaged with pressure after routine disinfection.

[0042] Preferably, the abdominal pressure belt 100 is designed to ensure the stability and accuracy of the drainage tube 210 during treatment. Figure 2 As shown, the surface of the abdominal compression belt 100 is provided with a fixing seat 110, which can provide a stable platform to ensure that the drainage tube 210 will not be displaced due to abdominal movement during the treatment process. Figure 3 As shown, the through slot 111 reserved in the fixing base 110 is designed to allow the drainage tube 210 to pass smoothly. In addition, the notch 112 on the wall of the through slot 111 provides a precise positioning point for the abutment block 124. This design allows the abutment block 124 to move within a limited range along the radial direction of the drainage tube 210 to ensure that it fixes the position of the drainage tube 210.

[0043] Preferably, the abutment block 124 is well matched to the outer wall of the drainage tube 210, and one side of its curved surface can closely fit the drainage tube 210, providing a stable support. A spring 125 is connected between the notch 112 and the abutment block 124, which provides the necessary tensile elastic force for the abutment block 124 to reset, allowing the abutment block 124 to automatically reset without external force, ensuring that the drainage tube 210 can be easily and detachably installed on the fixing base 110 of the abdominal pressure belt 100.

[0044] Preferably, if Figure 3 As shown, the fixing seat 110 is equipped with a locking member 120, which is designed to achieve precise fixation of the drainage tube 210. The locking member 120 includes two basic components: a knob 121 and a threaded rod 122. The knob 121 is located outside the fixing seat 110 and can be directly operated by medical staff. By rotating the knob 121, medical staff can control the threaded rod 122 connected thereto to move axially along the preset threaded track in the fixing seat 110. The movement of the threaded rod 122 is directly related to the position change of the ball 123 at its end, and the ball 123 is a component that is in direct contact with the abutment block 124. The rotation of the threaded rod 122 can accurately control the movement of the knob 121, and then adjust the pressure applied by the ball 123 to the abutment block 124. This change in pressure directly affects the degree of tightening of the abutment block 124 to the drainage tube 210. Medical staff can fine-tune the position of knob 121 based on the patient's specific treatment needs and abdominal anatomy to precisely control the stability and safety of drainage tube 210. The point contact between ball 123 and abutment block 124 means that ball 123 only applies force to a very small contact area. Therefore, even if ball 123 rotates synchronously with threaded rod 122, its own rotation will not cause abutment block 124 to rotate around the contact point. This mechanism ensures that abutment block 124 can move along a set radial path solely under the elastic force of spring 125, without causing undesirable rotation or displacement due to the rotation of ball 123.

[0045] Preferably, if Figure 2 As shown, to further enhance the fit and anti-slip properties of the abdominal compression belt 100, a non-slip pad 130 made of medical rubber is provided on one side of the belt 100. This design not only increases friction between the belt 100 and the patient's skin, preventing slippage during treatment, but also improves patient comfort. Elastic bands 140 on both sides of the belt 100 allow for adjustment based on the patient's body shape, ensuring a personalized and comfortable fit while also enhancing the secure fit.

[0046] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of this utility model, and these solutions also belong to the disclosure scope of this utility model and fall within the protection scope of this utility model. Those skilled in the art should understand that the description of this utility model and its drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A device for intraperitoneal hyperthermic perfusion chemotherapy, characterized in that: The invention comprises an abdominal pressure belt (100) and an infusion assembly (200), wherein the infusion assembly (200) comprises a drainage tube (210) penetrating the abdominal pressure belt (100) and being detachably connected thereto, wherein the drainage tube (210) is provided with a partition (213) therein, and the partition (213) is capable of dividing the internal lumen of the drainage tube (210) into an independent infusion chamber (211) and an extraction chamber (212); The inner tube walls of the perfusion chamber (211) and the extraction chamber (212) are both provided with a plurality of ribs (214) extending along the length direction of the drainage tube (210). The ribs (214) form a first blank section (215) in the perfusion chamber (211) and a second blank section (216) in the extraction chamber (212) in the form of reserved gaps. The distal end of the partition (213) is provided with a first baffle (217) and a second baffle (218) that can be opened and closed, wherein, when the two baffles are closed, the first baffle (217) can be limited in the first blank section (215) to block the outlet of the perfusion chamber (211); and the second baffle (218) can be limited in the second blank section (216) to block the outlet of the extraction chamber (212).

2. The device according to claim 1, characterized in that The shape of the first baffle (217) matches the cross-section of the perfusion chamber (211), the shape of the second baffle (218) matches the cross-section of the extraction chamber (212), and the first baffle (217) and the second baffle (218) have opposite opening directions, wherein the opening direction of the first baffle (217) is the same as the flow direction of the liquid in the perfusion chamber (211), and the opening direction of the second baffle (218) is the same as the flow direction of the liquid in the extraction chamber (212).

3. The device according to claim 1, characterized in that The first baffle (217) and the second baffle (218) are both equipped with a torsion spring, which is installed on the partition (213) so that the two baffles can close themselves by rotating around a rotating shaft arranged on the partition (213) due to the elastic force of the torsion spring, and the first baffle (217) and the second baffle (218) are kept in a closed state by abutting against the end surface of the rib (214).

4. The device according to claim 1, characterized in that The perfusion assembly (200) comprises a liquid inlet tube (220) and a liquid outlet tube (230) connected to the drainage tube (210), wherein the liquid inlet tube (220) is connected to the proximal end of the perfusion chamber (211), and the liquid outlet tube (230) is connected to the proximal end of the extraction chamber (212).

5. The device according to claim 4, characterized in that The device comprises a thermal perfusion chemotherapy apparatus (300) for providing driving force for liquid flow, and the thermal perfusion chemotherapy apparatus (300) is connected to the perfusion component (200) via the liquid inlet pipe (220) and the liquid outlet pipe (230).

6. The device according to claim 1, characterized in that The surface of the abdominal pressure belt (100) is provided with a fixing seat (110), and a through groove (111) is reserved in the fixing seat (110) for allowing the drainage tube (210) to pass through, and a notch (112) is provided on the groove wall of the through groove (111) to accommodate the abutment block (124).

7. The device according to claim 6, characterized in that The notch (112) defines a radial movement path of the abutment block (124) along the drainage tube (210), and a side of the abutment block (124) close to the through groove (111) is provided with an arc-shaped surface matching the shape of the outer wall of the drainage tube (210).

8. The device according to claim 6, characterized in that A spring (125) is connected between the abutment block (124) and the inner wall of the notch (112), and the abutment block (124) can have a tendency to move away from the drainage tube (210) under the tensile elastic force of the spring (125).

9. The device according to claim 6, characterized in that The fixing seat (110) is provided with a locking member (120), the locking member (120) comprising a knob (121) arranged outside the fixing seat (110), the knob (121) being connected to a threaded rod (122) threadedly engaged with the fixing seat (110), and a ball (123) contacting the abutment block (124) being provided at one end of the threaded rod (122) away from the knob (121).

10. The device according to claim 6, characterized in that The side of the abdominal pressure belt (100) attached to the patient's abdomen is provided with an anti-slip pad (130), and the abdominal pressure belt (100) is provided with elastic bands (140) on both sides of the fixing seat (110) for fixing.

Images