Reinfusion filtering device used after external drainage of bile in hepatobiliary surgery department

Abstract

The invention discloses a filtering device for reinfusion after external drainage of bile in the hepatobiliary surgery department in the technical field of medical instruments. The filtering device comprises a main carrier, a liquid storage mechanism and a filtering mechanism. A functional cavity is formed in the main carrier, and an opening and closing mechanism is arranged between the functional cavity and the liquid storage mechanism; a viscosity sensing assembly is arranged in the functional chamber; the viscosity sensing assembly comprises a driving part, a second disc and at least one first disc, the first disc and the second disc are rotationally connected with the bottom and the top of the functional chamber respectively, and the driving part is used for driving the first disc to rotate; a triggering mechanism is arranged at the top of the second disc and is used for triggering the opening and closing mechanism; a plurality of outlets are formed in the center of the second disc in the circumferential direction and communicate with feedback connectors. According to the scheme, by means of the accurate structural design, efficient filtering and accurate dilution of bile are achieved, and the safety, effectiveness and comfort of bile reinfusion treatment are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular is a bile drainage and re-infusion filtering device for hepatobiliary surgery. Background Art

[0002] In the field of hepatobiliary surgery, external bile drainage is a common method for treating diseases such as biliary obstruction, bile duct injury, bile fistula or postoperative cholestasis. Draining bile from the body through percutaneous transhepatic bile duct drainage (PTCD), T-tube or nasobiliary drainage can effectively relieve bile duct pressure, control infection and promote injury repair. However, long-term external bile drainage can lead to bile loss in the patient's body, disrupt the enterohepatic circulation, and cause serious complications such as water and electrolyte disorders, digestion and absorption disorders, intestinal flora imbalance and decreased immune function. Therefore, how to safely return the externally drained bile to the patient's body has become a clinical problem that needs to be solved urgently.

[0003] For example, Chinese patent document CN110575610B discloses a kit for bile reinfusion to the intestine based on PTCD drainage. The kit is designed to safely reinfuse bile drained from the outside into the intestine after filtering, so as to reduce the adverse effects of bile loss on patients. Its main structure includes a drainage tube, a filtering device and a reinfusion pipeline. The drainage tube is used to drain bile from the outside of the body to the filtering device, which uses a multi-layer filter to filter the bile to remove larger particle impurities, while the reinfusion pipeline is responsible for transporting the filtered bile back to the intestine. However, the filtration technology of this kit is relatively simple, mainly relying on physical interception, and has limited effect on the removal of tiny particles and pathogenic microorganisms. It cannot be dynamically regulated according to the real-time physical and chemical properties of bile, making it difficult to meet the higher clinical requirements for the safety and effectiveness of bile reinfusion.

[0004] In view of the defects of existing technologies, there is an urgent need for a re-infusion device that can efficiently filter and intelligently regulate bile to overcome the shortcomings of traditional technologies. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a hepatobiliary surgery bile drainage and re-infusion filtration device, which can dynamically dilute and control the bile according to the real-time viscosity of the bile to improve the bile re-infusion filtration efficiency.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A hepatobiliary surgery bile re-infusion filtering device comprises a main carrier, a liquid storage mechanism and a filtering mechanism; the liquid storage mechanism is used to store a diluent; the filtering mechanism is used to filter bile; a functional chamber is provided in the main carrier, the functional chamber is communicated with the liquid storage mechanism and the filtering mechanism respectively, an opening and closing mechanism is provided between the functional chamber and the liquid storage mechanism for realizing the opening and closing between the functional chamber and the liquid storage mechanism; a viscosity sensing component is provided in the functional chamber; the viscosity sensing component comprises a driving member, a second disc and at least one first disc, a preset distance is provided between the first disc and the second disc, the preset distance is not greater than 2 times the boundary layer thickness of the fluid, the first disc and the second disc are rotatably connected to the bottom and top of the functional chamber respectively, the driving member is used to drive the first disc to rotate; a trigger mechanism is provided on the top of the second disc, the trigger mechanism is used to trigger the operation of the opening and closing mechanism based on the rotation speed of the second disc;

[0008] A plurality of outlets are circumferentially opened at the center of the second disc, and the outlets are connected to a return connection.

[0009] The above scheme has the following beneficial effects:

[0010] 1. Working principle: When draining bile, the drainage tube is connected to the filtering mechanism, and the bile first enters the filtering mechanism for preliminary filtration to remove large particles of impurities. Subsequently, the bile flows into the functional chamber in the main carrier. The driving member is started, and the driving member drives the first disc to rotate. The rotation of the first disc causes the bile to produce a spiral centripetal motion in the functional chamber, which is based on the principle of boundary layer effect in fluid mechanics. During the flow of bile, it will drive the second disc to rotate together, and the rotation speed of the second disc is positively correlated with the viscosity of the bile. Specifically, when the rotation speed of the first disc remains constant, the higher the viscosity of the bile, the greater the viscous force between the bile and the second disc, which makes the second disc rotate faster.

[0011] When the second disc's rotational speed reaches a preset value, the trigger mechanism is activated, triggering the opening and closing mechanism. This opens the reservoir and the functional chamber, allowing the diluent in the reservoir to flow into the functional chamber and mix with the bile, thereby diluting the bile and reducing its viscosity. The diluted bile continues to flow within the functional chamber, ultimately passing through the outlet at the center of the second disc and being discharged through the return connector, completing the bile return process.

[0012] This solution uses a viscosity sensing component to monitor the viscosity of bile in real time and automatically adds diluent to dilute it according to the monitoring results, effectively reducing the viscosity of bile, making the bile flow more smoothly during filtration, improving filtration efficiency, and reducing blockage and residue problems during filtration.

[0013] 2. In this solution, the entire dilution and control process does not require human intervention and is automatically realized through mechanical structure and fluid mechanics principles. This improves the intelligence level of the device and the convenience of operation, reduces the workload and difficulty of operation of medical staff, and also reduces the impact of human factors on the bile reinfusion process, thereby improving the safety and reliability of treatment.

[0014] 3. This program ensures that the physical and chemical properties of bile during the reinfusion process are always within a safe range by precisely controlling the amount and timing of diluent addition, avoiding the adverse effects of over-dilution or under-dilution on patients, and reducing the risk of complications such as water and electrolyte disorders, digestive and absorption disorders, intestinal flora imbalance, and decreased immune function caused by abnormal bile viscosity, thereby improving the overall quality of bile reinfusion treatment and the quality of life of patients.

[0015] Furthermore, the liquid storage mechanism includes a liquid storage carrier; a liquid storage cavity is opened in the liquid storage carrier, and the liquid storage cavity is connected with the functional chamber along the tangent direction of the functional chamber.

[0016] Beneficial Effects: The reservoir connects to the functional chamber along a tangential direction. This design allows the diluent to flow tangentially upon entering the functional chamber, forming a relatively stable fluid path. This flow pattern facilitates thorough mixing of the diluent and bile, improving dilution efficiency while minimizing interference with bile flow upon entry, ensuring smooth bile reinfusion.

[0017] Furthermore, the filtering mechanism includes a filtering carrier; a filtering cavity is provided in the filtering carrier, a filtering layer is provided in the filtering cavity, and the filtering cavity is connected with the functional cavity along the tangential direction of the functional cavity.

[0018] Beneficial Effects: By removing impurities such as flocculent matter from the filtration chamber, these impurities can effectively prevent interference with the normal operation of the viscosity sensing component within the functional chamber, ensuring that the sensing component can accurately monitor bile viscosity and improving the reliability and accuracy of the entire device. The filtration chamber is connected to the functional chamber along a tangential direction. This design allows bile to flow tangentially upon entering the filtration chamber, forming a relatively stable spiral or rotating flow trend within the filtration chamber.

[0019] The stable flow of filtered bile in the functional chamber complements the addition of diluent, which is conducive to the uniform mixing of the diluent and bile, further improving the effect of bile dilution, ensuring that the viscosity of bile is always within an appropriate range, and improving the quality and safety of bile reinfusion.

[0020] Furthermore, the opening and closing mechanism includes a rotating groove provided on the communication path between the liquid storage chamber and the functional chamber; a baffle is rotatably connected in the rotating groove, and a through groove is eccentrically provided on the baffle. When the communication points of the through groove, the liquid storage chamber and the functional chamber coincide, the through groove, the liquid storage chamber and the functional chamber are connected to each other.

[0021] Beneficial Effect: The shutter rotates within the rotating trough, and by controlling the shutter's position, the through-channel is aligned or offset with the connection between the liquid storage chamber and the functional chamber, thereby achieving on-off control between the liquid storage chamber and the functional chamber. When the through-channel and the connection coincide, the diluent can flow from the liquid storage chamber into the functional chamber; when the through-channel and the connection are offset, the shutter separates the liquid storage chamber and the functional chamber, preventing the diluent from flowing into the functional chamber.

[0022] By rotating the shutter, the overlapping area of ​​the channel and the connection can be precisely controlled, enabling fine-tuning of the diluent flow rate. This design dynamically adjusts the amount of diluent added based on the real-time viscosity of the bile, ensuring that the bile viscosity is always optimal, improving the safety and effectiveness of bile reinfusion.

[0023] Furthermore, the trigger mechanism includes a touch groove opened at the top of the functional chamber, a rotating shaft is rotatably connected in the touch groove, the bottom of the rotating shaft is axially fixedly connected to the second disc, a touch plate is provided on one side of the rotating shaft, a plurality of first gear teeth are provided on the outer side of the touch plate, and a plurality of second gear teeth are provided on the side of the shield close to the touch plate, and the first gear teeth and the second gear teeth are engaged with each other; a spring is provided on the rotating shaft, and the spring is used to reduce the rotation speed of the second disc according to a preset ratio.

[0024] Beneficial Effect: When bile enters the functional chamber and drives the second disc to rotate, the second disc's rotation is transmitted to the touch plate via the rotating shaft. The first gear teeth on the touch plate mesh with the second gear teeth on the shutter, causing the shutter to rotate. The spring reduces the second disc's rotational speed by a preset ratio, thereby achieving precise control of the shutter's rotational speed. When the second disc's rotational speed reaches a preset value, the through slot on the shutter coincides with the connection between the liquid reservoir and the functional chamber. The diluent in the liquid reservoir enters the functional chamber, mixing with the bile and diluting it.

[0025] By using a spring to reduce the second disc's rotational speed to a preset ratio, the rotational speed of the touch plate and shutter can be precisely controlled. This design ensures that only when the bile viscosity reaches a preset value will the through slot on the shutter coincide with the connection between the reservoir and the functional chamber. This allows for precise control of the timing of diluent addition, avoiding unnecessary diluent addition and improving the efficiency and safety of bile reinfusion.

[0026] Furthermore, a main chamber and a heating mechanism are provided in the main carrier; the main chamber is connected to the outlet and the return connector respectively, and an electromagnetic valve is provided on the communication path between the main chamber and the return connector; the heating mechanism is used to heat the bile in the main chamber.

[0027] Beneficial Effects: After dilution and initial filtration, bile flows into the main chamber through the outlet at the center of the second disc. A heating mechanism heats the bile in the main chamber, ensuring it reaches an appropriate temperature before reinfusion. The heated bile flows through a path controlled by a solenoid valve and is then output through the reinfusion connector, completing the bile reinfusion process.

[0028] The heating mechanism heats the bile in the main chamber, ensuring it reaches an appropriate temperature before reinfusion. This helps reduce thermal stimulation to the patient's digestive system during bile reinfusion, avoiding indigestion, abdominal pain, or other discomfort caused by low bile temperature, thereby improving patient comfort and treatment tolerance.

[0029] The viscosity of bile decreases further after heating, improving its flow properties. This helps bile flow smoothly within the main chamber and the return pipe, reduces bile residue and blockage risks in the pipe, and improves the efficiency and safety of bile return.

[0030] Furthermore, the heating mechanism includes a spiral tube, which is made of magnetic conductive material; a number of permanent magnets are arranged circumferentially within the first disk, with adjacent permanent magnets having opposite magnetic poles, and the spiral tube is located within the magnetic field generated by the permanent magnets; both ends of the spiral tube are connected to a heat dissipation pipe, which is located within the side wall of the main chamber, and the spiral tube and the heat dissipation pipe are filled with a heat transfer medium, and a circulation pump is provided on the connecting path between the spiral tube and the heat dissipation pipe.

[0031] Beneficial Effect: When the first disc rotates, the permanent magnet rotates with it, generating a changing magnetic field. Because the spiral tube is made of a magnetically permeable material and is within the magnetic field generated by the permanent magnet, the changes in the magnetic field generate induced currents (eddy currents) within the spiral tube, generating heat. The heat transfer medium within the spiral tube absorbs the heat and is then circulated between the spiral tube and the heat dissipation pipe via a circulating pump. The heat dissipation pipe is located within the side wall of the main chamber. As the heat transfer medium flows through the heat dissipation pipe, it transfers heat to the bile in the main chamber, thereby increasing the bile's temperature.

[0032] By controlling the rotational speed of the first disc, the frequency and intensity of the magnetic field generated by the permanent magnet can be adjusted, thereby controlling the magnitude of the induced current and the heat generated within the spiral tube. This design allows the bile heating temperature to be precisely adjusted as needed, ensuring that the bile reaches the appropriate temperature before reinfusion, thereby improving the safety and effectiveness of treatment.

[0033] The connecting design of the spiral tube and the heat dissipation pipe and the circulating flow of the heat transfer medium enable the heat to be evenly transferred to the bile in the main chamber, avoiding the problems of local overheating or uneven temperature.

[0034] During the electromagnetic induction heating process, heat generation and transfer are carried out in closed spiral tubes and heat dissipation tubes, avoiding direct contact with bile and reducing the risk of bile contamination.

[0035] Through linkage with the first disc, the heating mechanism can dynamically adjust the heating power according to the real-time flow state and viscosity of bile to achieve intelligent temperature control.

[0036] Furthermore, an ultraviolet lamp layer is provided in the return joint.

[0037] Beneficial Effects: When the bile reinfusion device is idle, the UV lamp layer is activated, and the UV LED lamp emits ultraviolet light to irradiate the interior of the reinfusion connector, thereby achieving the purpose of disinfection and sterilization. Through regular disinfection, the number of microorganisms in the reinfusion connector can be significantly reduced, reducing the risk of cross-infection caused by reinfusion connector contamination, protecting patients from infection, and improving treatment safety.

[0038] Furthermore, a pressurizing mechanism is provided in the liquid storage chamber; the pressurizing mechanism includes a push plate and a spring, the push plate is in sliding cooperation with the liquid storage chamber, and the spring is used to press the push plate.

[0039] Beneficial Effects: When the diluent enters the liquid storage chamber, the push plate exerts a certain amount of pressure on the diluent under the action of the spring. When the opening and closing mechanism opens, the liquid storage chamber is connected to the functional chamber. Under the action of pressure, the diluent can flow into the functional chamber more quickly and stably, mixing with bile to achieve the dilution function.

[0040] The pressurizing mechanism applies pressure to the push plate through a spring, so that the diluent has a certain pressure when entering the functional chamber, which can mix with the bile more quickly and stably, improve the delivery efficiency of the diluent, reduce the residence time of bile in the functional chamber, and improve the operating efficiency of the entire device.

[0041] The pressurizing mechanism can push the diluent in the liquid storage chamber out more thoroughly, reduce the residual diluent in the liquid storage chamber, improve the utilization rate of the diluent, and reduce waste.

[0042] Furthermore, it also includes a temperature sensor and a control unit; the temperature sensor is used to collect the bile temperature in the main chamber; the control unit is used to control the operation of the solenoid valve and the driving component based on the bile temperature.

[0043] Beneficial effect: The temperature sensor can monitor the bile temperature in the main chamber in real time, ensuring that the bile reaches an appropriate temperature range before being reinfused. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the three-dimensional structure of the hepatobiliary surgery bile drainage and reinfusion filtration device of the present invention.

[0045] Figure 2 for Figure 1 Front view of .

[0046] Figure 3 for Figure 1 Top view of .

[0047] Figure 4 for Figure 2 Cross-section view in the AA direction.

[0048] Figure 5 for Figure 3 Cross-section view in the middle BB direction.

[0049] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure of the middle shield.

[0050] Figure 7 for Figure 4 A partial enlarged schematic diagram of point M in the middle.

[0051] Figure 8 for Figure 5 A local enlarged schematic diagram of point N in the middle.

[0052] The figure marks in the drawings of the specification include: 1. main carrier; 2. liquid storage carrier; 3. filter carrier; 4. return connector; 101. main chamber; 102. functional chamber; 103. first disc; 104. second disc; 105. rotating shaft; 106. spring; 107. servo motor; 108. spiral tube; 109. circulation pump; 110. heat dissipation pipe; 111. touch plate; 112. touch groove; 113. shield; 114. through groove; 201. liquid storage chamber; 202. spring; 203. push plate; 301. filter layer; 302. filter chamber; 401. ultraviolet lamp layer; 402. solenoid valve; 1031. permanent magnet; 1032. outlet. DETAILED DESCRIPTION

[0053] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0054] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0056] The following is further described in detail through specific implementation methods:

[0057] The embodiment is basically as shown in the attached Figures 1-8 As shown: A hepatobiliary surgery bile drainage and back-infusion filtering device mainly includes a main carrier 1, a liquid storage mechanism and a filtering mechanism. The liquid storage mechanism is used to store a diluent, and the diluent in this embodiment is physiological saline. Specifically, the liquid storage mechanism includes a liquid storage carrier 2, which is an inverted bottle structure; a liquid storage cavity 201 is opened in the liquid storage carrier 2. Preferably, in combination with the attached Figure 5 As shown, a pressurizing mechanism is also provided in the liquid storage chamber 201; the pressurizing mechanism includes a push plate 203 and a spring 202, the push plate 203 slides in cooperation with the liquid storage chamber 201, and the two ends of the spring 202 are respectively welded to the top of the push plate 203 and the top of the liquid storage chamber 201.

[0058] The filtration mechanism is used to filter bile. Specifically, the filtration mechanism includes a filter carrier 3. In this embodiment, the filter carrier 3 is located on top of the main carrier 1. The top of the filter carrier 3 is connected to a drainage pipe connector, which is used to connect to the drainage pipe to guide the bile inflow. The filter carrier 3 defines a filter cavity 302, the top of which is connected to the drainage pipe connector. The filter cavity 302 is provided with a filter layer 301. In this embodiment, the filter layer 301 is a sterile gauze layer. Its main purpose is to filter out larger impurities such as flocculent matter from the bile, ensuring that the bile flowing into the functional chamber 102 is relatively pure.

[0059] A functional chamber 102 is provided in the main carrier 1. Preferably, in this embodiment, the functional chamber 102 is a disc-shaped structure. The functional chamber 102 is connected to the liquid storage chamber 201 and the filter chamber 302 respectively. The bottom of the liquid storage chamber 201 and the filter chamber 302 are connected to the functional chamber 102 along the tangential direction of the functional chamber 102 through a conduit.

[0060] An opening and closing mechanism is provided between the functional chamber 102 and the liquid storage mechanism to realize the opening and closing between the functional chamber 102 and the liquid storage mechanism. Figure 5 , Attachment Figure 6 and attached Figure 8 As shown, the opening and closing mechanism includes a rotating groove (not shown in the figure) opened on the communication path between the liquid storage chamber 201 and the functional chamber 102; a shield plate 113 is rotatably connected in the rotating groove. In this embodiment, the shield plate 113 is a circular structure, and the rotation point of the shield plate 113 is located at Figure 8 On the right side of the middle shield plate 113, a through groove 114 is eccentrically opened on the shield plate 113. When the connection points of the through groove 114, the liquid storage cavity 201 and the functional chamber 102 coincide, the three are connected to each other, that is, the liquid storage cavity 201, the through groove 114 and the functional chamber 102 form a complete communication path.

[0061] A viscosity sensing assembly is disposed within the functional chamber 102; the viscosity sensing assembly includes a drive member, a second disc 104, and at least one first disc 103. Preferably, in this embodiment, a single first disc 103 is provided; in other embodiments, multiple first discs 103 may be provided (depending on actual needs; a greater number of first discs 103 increases the boundary layer area and improves efficiency). A preset distance is provided between the first disc 103 and the second disc 104. The preset distance is no greater than twice the bile boundary layer thickness; in this embodiment, the preset distance is between 1.5 and 2 times the bile boundary layer thickness.

[0062] A driver, in this embodiment, a servo motor 107, is used to rotate the first disc 103. The servo motor 107 is located at the bottom of the functional chamber 102. The output shaft of the servo motor 107 is axially fixed to the center of the first disc 103 via a coupling. The center of the second disc 104 is rotationally connected to the top of the functional chamber 102. A trigger mechanism is located at the top of the second disc 104, which activates the opening and closing mechanism based on the rotational speed of the second disc 104.

[0063] Specifically, the trigger mechanism includes a touch groove 112 opened at the top of the functional chamber 102. Preferably, in this embodiment, the touch groove 112 is a fan-shaped structure, and a rotating shaft 105 is provided in the touch groove 112. The top of the rotating shaft 105 is rotatably connected to the top of the touch groove 112, and the bottom of the rotating shaft 105 is axially fixed to the second disc 104 through a key connection. A touch plate 111 is provided on one side of the rotating shaft 105. Preferably, as shown in the attached Figure 6As shown, in this embodiment, the touch plate 111 is a fan-shaped structure as a whole, and a plurality of first gear teeth are provided on the outside of the touch plate 111. The first gear teeth and the touch plate 111 are integrated into a design, and a plurality of second gear teeth are provided on the side of the shielding plate 113 close to the touch plate 111. The second gear teeth and the shielding plate 113 are also integrated into a design, and the shielding plate 113 and the touch plate 111 are engaged with each other through the first gear teeth and the second gear teeth; a spring 106 is provided on the rotating shaft 105, and the spring 106 is used to reduce the rotation speed of the second disc 104 according to a preset ratio. Specifically, one end of the spring 106 is welded and fixed to the rotating shaft 105, and the other end of the spring 106 is welded and fixed to the inner wall of the touch groove 112.

[0064] Preferably, in combination with Figure 4 and attached Figure 5 As shown, the main carrier 1 is also provided with a main chamber 101 and a heating mechanism; the main chamber 101 is opened below the functional chamber 102, and the main chamber 101 and the functional chamber 102 are connected to each other. Specifically, in this embodiment, a special-shaped groove is opened at the bottom center of the functional chamber 102, and the top notch of the special-shaped groove is an annular opening. Figure 7 As shown, a plurality of outlets 1032 are circumferentially defined at the center of the second disk 104, corresponding to the annular opening. A return connector 4 is connected to the bottom of the main chamber 101, and a solenoid valve 402 is installed in the path connecting the main chamber 101 and the return connector 4. Preferably, in this embodiment, both the return connector 4 and the drainage tube connector are equipped with a UV lamp layer 401.

[0065] The heating mechanism is used to heat the bile within the main chamber 101. Specifically, the heating mechanism includes a spiral tube 108, which is made of a magnetically conductive material, such as iron or stainless steel. Several permanent magnets 1031 are circumferentially embedded within the first disk 103, with adjacent permanent magnets 1031 having opposite magnetic poles. The spiral tube 108 is located within the magnetic field generated by the permanent magnets 1031. In this embodiment, the spiral tube 108 is located directly below the first disk 103, and the spiral path of the spiral tube 108 coincides with the circular trajectory of the permanent magnets 1031. Both ends of the spiral tube 108 are connected to the heat dissipation pipe 110, and the two ends of the heat dissipation pipe 110 are respectively connected to the spiral tube 108 to form a closed circulation path. The heat dissipation pipe 110 is embedded in the side wall of the main chamber 101, and the side wall of the main chamber 101 is made of heat-conducting material. In this embodiment, the heat dissipation pipe 110 located in the main chamber 101 is embedded in the side wall of the main chamber 101 in a wave shape. The spiral tube 108 and the heat dissipation pipe 110 are filled with a heat transfer medium. In this embodiment, the heat transfer medium is water. A circulation pump 109 is installed on the communication path between the spiral tube 108 and the heat dissipation pipe 110. The input end of the circulation pump 109 is connected to one end of the spiral tube 108, and the output end of the circulation pump 109 is connected to one end of the heat dissipation pipe 110.

[0066] Preferably, it also includes a temperature sensor (not shown in the figure) and a control unit; the temperature sensor is used to collect the bile temperature in the main chamber 101; the control unit is used to control the operation of the solenoid valve 402 and the drive component based on the bile temperature.

[0067] The control unit determines whether the bile temperature has reached the appropriate return temperature based on a preset temperature range (37-38°C in this embodiment) and logic. If the bile temperature does not reach the preset value, the control unit can adjust the power of the heating mechanism to accelerate the bile heating process. If the bile temperature reaches the preset value, the control unit controls the solenoid valve 402 to open and cooperates with the drive element to start bile return.

[0068] The specific implementation process is as follows:

[0069] Connect the drainage tube to the drainage tube connector to ensure a tight connection without leakage. The liquid storage chamber 201 is pre-filled with an appropriate amount of diluent, and the push plate 203 exerts a certain pressure on the diluent under the action of the spring 202.

[0070] Bile flows into the filter cavity 302 through the drainage tube, is filtered through the sterile gauze layer, and after removing larger impurities such as flocculent matter, flows into the functional cavity 102 along a tangential direction.

[0071] The servo motor 107 is activated, driving the first disc 103 to rotate. This gradually generates negative pressure within the functional chamber 102 (fluid boundary layer effect), attracting bile. The bile forms a spiral, centripetal flow within the functional chamber 102, using the bile's propulsive force on the second disc 104 to cause it to rotate within the functional chamber 102. When the second disc 104's rotation speed reaches a preset value and overcomes the resistance applied by the spring 106, the touch plate 111 drives the shutter 113 to rotate, causing the through slot 114 to align with the connecting path (i.e., the conduit) between the liquid reservoir 201 and the functional chamber 102. This allows the diluent in the liquid reservoir 201 to flow under pressure into the functional chamber 102, mixing and diluting with the bile. When the second disc 104's rotation speed drops below the preset value, the potential energy of the spring 106 resets the touch plate 111 and shutter 113, blocking the diluent in the liquid reservoir 201 and interrupting its flow.

[0072] The diluted bile flows into the main chamber 101. When the first disc 103 rotates, the changing magnetic field generated by the permanent magnet 1031 induces an induced current (i.e., eddy current) in the spiral tube 108, generating heat (when metal is placed in an alternating magnetic field, eddy currents are generated inside the metal. These eddy currents are formed because the changing magnetic field exerts a force on the free electrons in the metal. According to Faraday's law of electromagnetic induction, the eddy currents will further generate a reverse magnetic field, which interacts with the external magnetic field, thereby consuming energy and converting it into heat energy). The heat transfer medium flows under the action of the circulating pump 109, transferring heat to the bile in the main chamber 101, causing the heat transfer medium in the heat pipe 110 to exchange heat with the bile, thereby increasing the temperature of the bile.

[0073] The temperature sensor monitors bile temperature in real time, and the control unit adjusts the heating power based on this temperature data. When the bile temperature reaches 37-38°C, the control unit opens the solenoid valve 402. With the coordinated action of the first disc 103 (the rotation of the first disc 103 continuously draws bile and discharges it through the outlet 1032 toward the main chamber 101), the bile is pushed back into the patient's body through the return connector 4.

[0074] When the device is idle, the ultraviolet lamp layer 401 in the return connector 4 and the drainage tube connector is started to disinfect the interior to prevent the growth of microorganisms.

[0075] Experimental Design: Verify the Excellence of Dynamic Dilution Control in This Example

[0076] Test objectives

[0077] The performance advantages of the device of the present invention in real-time monitoring of bile viscosity, dynamic adjustment of the amount of diluent added, and maintenance of the physicochemical stability of bile after dilution were verified, and the effects of traditional static dilution or no dilution schemes were compared.

[0078] Trial Groups

[0079]

[0080] Samples and Materials

[0081] Simulated bile solution: basic formula: sodium taurocholate (3%), lecithin (0.5%), sodium chloride (0.9%) aqueous solution.

[0082] Viscosity gradient: adjusted to 1.5 mPa·s (low viscosity), 3.0 mPa·s (medium viscosity), and 5.0 mPa·s (high viscosity) by adding sodium carboxymethyl cellulose (CMC-Na).

[0083] Marker: Fluorescent tracer: Rhodamine B (1 ppm) is used to label the dilution solution and quantify the mixing uniformity. Pressure sensor: Monitors the changes in fluid resistance in the functional chamber and return line.

[0084] Test methods

[0085] 1. Dynamic response capability of viscosity

[0086] method:

[0087] Simulated bile of different viscosities (1.5 / 3.0 / 5.0 mPa·s) was injected into the functional chamber and the device was activated:

[0088] The distribution of rhodamine B was detected by fluorescence spectrometer, and the mixing uniformity of the diluent and bile was calculated (CV value ≤ 15% was considered satisfactory).

[0089] Comparative analysis: Difference in the amount of diluent added between the experimental group and the control group 1 at the same viscosity.

[0090] 2. Physical and chemical stability after dilution

[0091] method:

[0092] The infusion samples were collected and the viscosity was measured using a rotational viscometer (Brookfield DV3T).

[0093] Ion chromatography (ICS-6000) was used to detect the concentrations of Na+ and K+, and the changes before and after dilution were compared.

[0094] 3. System anti-interference ability

[0095] Scenario simulation:

[0096] Viscosity mutation: When medium-viscosity bile (3.0 mPa·s) is continuously infused, it suddenly switches to high-viscosity bile (5.0 mPa·s).

[0097] Pulsed impurities: Fiber particles are periodically injected into the bile (simulating biliary tract shedding tissue).

[0098] Evaluation criteria:

[0099] Can the device detect changes in viscosity and initiate dilution within 10 seconds?

[0100] Check whether the pressure difference of the filter layer increases significantly due to impurity blockage (ΔP<5kPa is qualified).

[0101] Expected results and advantage verification

[0102]

[0103] Through the above experiments, the following breakthroughs in dilution control achieved by the device of the present invention can be systematically demonstrated:

[0104] Accuracy: Personalized dilution is achieved through closed-loop control of viscosity-speed-dilution amount;

[0105] Robustness: Maintaining system stability in response to sudden changes in viscosity and interference from impurities;

[0106] Safety: The physical and chemical indicators after dilution meet the requirements of physiological transfusion, avoiding the risk of complications of traditional solutions.

[0107] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bile drainage and re-infusion filtration device for hepatobiliary surgery, comprising a main carrier (1), a liquid storage mechanism and a filtering mechanism; the liquid storage mechanism is used to store a diluent; the filtering mechanism is used to filter bile; and the device is characterized by: A functional chamber (102) is provided in the main carrier (1), the functional chamber (102) is communicated with the liquid storage mechanism and the filtering mechanism respectively, and an opening and closing mechanism is provided between the functional chamber (102) and the liquid storage mechanism for realizing the opening and closing between the functional chamber (102) and the liquid storage mechanism; a viscosity sensing component is provided in the functional chamber (102); the viscosity sensing component comprises a driving member, a second disc (104) and at least one first disc (103), a preset distance is provided between the first disc (103) and the second disc (104), and the preset distance is not greater than twice the boundary layer thickness of the fluid, the first disc (103) and the second disc (104) are respectively connected to the bottom and the top of the functional chamber (102), and the driving member is used to drive the first disc (103) to rotate; a trigger mechanism is provided on the top of the second disc (104), and the trigger mechanism is used to trigger the operation of the opening and closing mechanism based on the rotation speed of the second disc (104); A plurality of outlets (1032) are circumferentially opened at the center of the second disc (104), and the outlets (1032) are connected to a return connector (4) for returning bile.

2. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 1, characterized in that: The liquid storage mechanism comprises a liquid storage carrier (2); a liquid storage cavity (201) is provided in the liquid storage carrier (2); the liquid storage cavity (201) is communicated with the functional chamber (102) along a tangential direction of the functional chamber (102).

3. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 2, characterized in that: The filtering mechanism comprises a filtering carrier (3); a filtering cavity (302) is provided in the filtering carrier (3); a filtering layer (301) is provided in the filtering cavity (302); and the filtering cavity (302) is communicated with the functional cavity (102) along a tangential direction of the functional cavity (102).

4. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 3, characterized in that: The opening and closing mechanism comprises a rotating groove provided on a communication path between the liquid storage chamber (201) and the functional chamber (102); a shielding plate (113) is rotatably connected in the rotating groove, and a through groove (114) is eccentrically provided on the shielding plate (113); when the communication points of the through groove (114), the liquid storage chamber (201) and the functional chamber (102) coincide, the through groove (114), the liquid storage chamber (201) and the functional chamber (102) are in communication with each other.

5. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 4, characterized in that: The trigger mechanism comprises a touch groove (112) provided on the top of the functional chamber (102); a rotating shaft (105) is rotatably connected in the touch groove (112); the bottom of the rotating shaft (105) is axially fixedly connected to the second disc (104); a touch plate (111) is provided on one side of the rotating shaft (105); a plurality of first gear teeth are provided on the outer side of the touch plate (111); a plurality of second gear teeth are provided on the side of the shielding plate (113) close to the touch plate (111); the first gear teeth and the second gear teeth are meshed with each other; a spring (106) is sleeved on the rotating shaft (105); the spring (106) is used to reduce the rotation speed of the second disc (104) according to a preset ratio.

6. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 5, characterized in that: A main chamber (101) and a heating mechanism are also provided in the main carrier (1); the main chamber (101) is respectively connected to the outlet (1032) and the return connector (4); a solenoid valve (402) is provided on the communication path between the main chamber (101) and the return connector (4); the heating mechanism is used to heat the bile in the main chamber (101).

7. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 6, characterized in that: The heating mechanism comprises a spiral tube (108), which is made of a magnetic conductive material; a plurality of permanent magnets (1031) are arranged in the circumferential direction of the first disc (103), the magnetic poles of adjacent permanent magnets (1031) are opposite, and the spiral tube (108) is located within the magnetic field generated by the permanent magnets (1031); both ends of the spiral tube (108) are connected to a heat dissipation pipe (110), the heat dissipation pipe (110) is located in the side wall of the main chamber (101), the spiral tube (108) and the heat dissipation pipe (110) are filled with a heat transfer medium, and a circulation pump (109) is provided on the communication path between the spiral tube (108) and the heat dissipation pipe (110).

8. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 7, characterized in that: An ultraviolet lamp layer (401) is provided in the return connector (4).

9. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 8, characterized in that: A pressurizing mechanism is also provided in the liquid storage chamber (201); the pressurizing mechanism comprises a push plate (203) and a spring (202); the push plate (203) is in sliding cooperation with the liquid storage chamber (201), and the spring (202) is used to press the push plate (203).

10. The hepatobiliary surgery bile drainage and re-infusion filtration device according to claim 9, characterized in that: It also includes a temperature sensor and a control unit; the temperature sensor is used to collect the bile temperature in the main chamber (101); the control unit is used to control the operation of the solenoid valve (402) and the driving member based on the bile temperature.

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