Calculus removing device for clinical treatment

Abstract

The invention discloses a calculus removing device for clinical treatment, which comprises a choledochoscope, a calculus removing tube penetrates through the choledochoscope, two branch tubes are arranged at the top end of the calculus removing tube, one of the branch tubes is connected with a flow meter, and the branch tube connected with the flow meter is used for injecting normal saline into the biliary tract through the calculus removing tube; the other branch pipe is connected with a filtering assembly, a micro pump is arranged at one end, not connected with the branch pipe, of the filtering assembly, the water suction end of the micro pump is connected with the filtering assembly, calculus fragments and normal saline in the biliary tract are sucked out together through the micro pump, and the filtering assembly is used for filtering out the calculus fragments mixed in the normal saline. Gall-stone fragments and normal saline around the gall-stone fragments are sucked away through the suction force of the micro pump, and some small-particle gall-stone fragments can be sucked into the calculus removing pipeline along with the normal saline, so that the calculus fragments in the biliary tract can be completely removed, and the situation that some small calculus fragments are difficult to find and take out is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a stone removal device for clinical treatment. Background Art

[0002] Gallstones are a common disease in clinical treatment of hepatobiliary surgery. Traditional treatments for gallstones mainly include drug therapy and surgical treatment. Drug therapy may have certain effects on some smaller stones, but it is often difficult to work for larger stones. Surgical treatment usually uses open surgery or laparoscopic surgery. Open surgery is more traumatic, takes a long time for patients to recover, and is prone to complications. Although laparoscopic surgery is relatively less traumatic, it also has certain limitations. For example, for some complex stone conditions, the operation is more difficult. In order to facilitate the removal of gallstones smoothly during laparoscopic surgery, some new stone removal devices are now on the market to assist staff in efficiently removing gallstones.

[0003] For example, a Chinese patent with publication number CN212089669U discloses a novel clinical hepatobiliary surgery stone removal device, including a device body, a limiting sleeve and a visual mechanism are provided on the upper outer surface of the device body, the visual mechanism is located on one side of the limiting sleeve, a stone removal box is provided on the lower outer surface of the device body, and a connecting block is provided on one side of the limiting sleeve. This scheme provides a convenient-to-use choledochoscope during the working process through the visual mechanism, and the choledochoscope can be used to observe the treatment process in real time through the high-precision choledochoscope, which is convenient for medical personnel to make correct judgments and perform the next step of operation according to the actual situation observed, which not only makes the use of the stone removal device more flexible, but also improves the safety of the stone removal process, improves efficiency and is convenient to use.

[0004] The stone removal device provided by the above patent is mainly to facilitate the staff to observe the stones in the bile duct or gallbladder. In the actual operation of laparoscopic surgery, it is necessary to first use a duodenoscope to find the entrance of the bile duct, and then use the choledochoscopic to pass through the duodenoscope, and make the choledochoscopic enter the bile duct through the entrance of the bile duct to find the location of the stones. After that, the stones are captured and pulled into the intestines using an air bag or a stone removal basket, and the stones will be discharged from the body with the stool. Since it is not necessary to remove the stones directly from the body through the laparoscope, the stone crushing method is basically not used for stone removal when treating gallstones. However, the bile duct is complex. When some stones are large in size and the location of the stones is not convenient for pulling or capturing, it is necessary to use the means of stone crushing. After the gallstones are crushed by the method of stone crushing, the gallstones will be broken into multiple pieces, and the bile duct is complex, it is easy to cause some small stones to be retained in the bile duct and difficult to remove, and the existing tools for removing gallstones after stone crushing are not convenient to cooperate with the choledochoscopic to quickly find and remove the gallstone fragments, which is not conducive to the efficient stone removal of the staff. Summary of the invention

[0005] The purpose of the present invention is to provide a stone removal device for clinical treatment, aiming to improve the problem that the existing tools for removing gallstones after lithotripsy are not convenient for cooperating with a choledochoscope to quickly find and remove gallstone fragments, which is not conducive to efficient stone removal by staff.

[0006] The present invention is achieved in that:

[0007] A stone removal device for clinical treatment comprises a choledochoscope, wherein a stone removal tube passes through the inside of the choledochoscope, and two branch tubes are arranged at the top of the stone removal tube, wherein one branch tube is connected to a flow meter, and the branch tube connected to the flow meter is used to inject physiological saline into the bile duct through the stone removal tube; the other branch tube is connected to a filter assembly, and a micro pump is arranged at one end of the filter assembly not connected to the branch tube, and the water suction end of the micro pump is connected to the filter assembly, and the stone fragments and the physiological saline in the bile duct are sucked out together by the micro pump, and the filter assembly is used to filter out the stone fragments mixed in the physiological saline.

[0008] Preferably, an operating handle is provided at the top of the choledochoscope, a tube-through joint is provided obliquely on the side of the operating handle, a mounting hole is provided in the middle of the tube-through joint, and the mounting hole is communicated with the inner cavity of the choledochoscope; a wire is provided at the top of the choledochoscope, and a plug connector is provided at the end of the wire.

[0009] Preferably, an adapter is provided at the top of the stone removal tube, a stud is provided at the bottom of the adapter, and the stud is threadedly connected to the mounting hole; the branch pipe is connected to the adapter, and the branch pipe is communicated with the stone removal tube; an adapter cap is provided at the end of the branch pipe, and a throttle valve is provided on each of the branch pipes.

[0010] Preferably, the flow meter is provided with adapter rings at both the front and rear ends, and the adapter rings are threadedly connected to the adapter cap; the upper surface of the flow meter is provided with control buttons and a display screen, and the side of the flow meter is provided with a charging port.

[0011] Preferably, the flow meter is internally integrated with a central control module, and the central control module is connected to a display module, a setting module, a flow control module, a warning module and a power storage module; the central control module is used to control the entire flow meter, the display module is used to display the injected flow in real time, the flow control module is used to set an upper flow limit, and the warning module is used to emit a warning sound when the flow exceeds the set upper flow limit; the power storage module is used to power the flow meter to ensure that the flow meter can be flexibly moved and used.

[0012] Preferably, the filter assembly includes a sleeve, a filter element and an end cover, the sleeve is provided with a connecting pipe at one end facing the branch pipe, and the other end is open, and a threaded joint is provided at the edge of the opening; the filter element is arranged on the inner side of the sleeve, a gap is provided between the filter element and the inner wall of the sleeve, and a mounting joint is provided at the edge of the opening of the end of the filter element facing the end cover, the mounting joint is threadedly connected to the end cover, a connecting pipe is provided in the middle of the end cover, the connecting pipe is communicated with the inner cavity of the filter element, and the end of the connecting pipe is rotatably connected to a connecting cap.

[0013] Preferably, a control box is provided at the bottom end of the micropump, a charging slot and a control panel are provided on the side of the control box, and a pump head is provided at the output end of the micropump, two external pipes are provided on the side of the pump head, and the external pipes are respectively provided with a water suction end and a drainage end of the micropump, and the external pipe serving as the water suction end of the micropump is threadedly connected to the connecting cap.

[0014] Preferably, the micro pump is internally integrated with an MCU control module, the MCU control module is connected to a keying module, a flow rate sensor, a power regulating module and a battery, the battery is installed inside a control box, and the battery is connected to a charging slot; the keying module is used to set the data for the operation of the micro pump, the flow rate sensor is used to sense the flow rate of the micro pump pumping saline solution, the power regulating module is used to automatically adjust the power of the micro pump according to the set speed of pumping saline solution; the battery is used to power the entire micro pump.

[0015] Preferably, the suction force calculation formula when the micro pump pumps the normal saline inside the bile duct is as follows:

[0016]

[0017] Among them, F is the suction force when pumping the normal saline inside the bile duct, ρ is the density of the normal saline, Q is the flow rate of the normal saline injected into the bile duct recorded by the flow meter, and t is the set time for sucking the normal saline in the bile duct.

[0018] Preferably, it also includes a guide tube, the guide tube is connected to the external tube at the outlet end of the micro pump, a mounting cap is provided at one end of the guide tube facing the external tube, the mounting cap is threadedly connected to the external tube, and a weight ball is provided at the bottom end of the guide tube, a plurality of drainage holes are provided on the side of the weight ball, and the drainage holes are communicated with the inner cavity of the guide tube

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention arranges a stone removal tube inside the choledochoscopic endoscope, and the end of the choledochoscopic endoscope can be controlled by medical staff to twist back and forth. After the gallstones are broken, an appropriate amount of normal saline can be injected into the patient's bile duct through the stone removal tube. Then the medical staff can control the stone removal tube through the choledochoscopic endoscope to twist to find relatively large gallstone fragments, and then start the micro pump. The gallstone fragments and the normal saline around them are sucked away by the suction of the micro pump, and some fine gallstone fragments will also be sucked into the stone removal tube along with the normal saline, so that the stone fragments inside the bile duct can be removed cleanly, and some small stone fragments can be avoided from being difficult to find and remove.

[0021] 2. The present invention installs a filter assembly between the micro pump and the branch pipe, and the filter assembly can filter out the gallstone fragments in the extracted physiological saline, making it convenient for medical staff to collect the gallstone fragments.

[0022] 3. The present invention connects a guide tube to the drainage end of the micro pump, so that the physiological saline extracted from the patient's body can be smoothly discharged to a designated place. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a choledochoscope of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the stone extraction tube of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the flow meter of the present invention;

[0027] Figure 5 It is a structural block diagram of the flow meter of the present invention;

[0028] Figure 6 is a schematic structural diagram of the filter assembly of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the micro pump of the present invention;

[0030] Figure 8 It is a block diagram of the micro pump of the present invention;

[0031] Fig. 9 It is a structural schematic diagram of the flow guide pipe of the present invention.

[0032] In the figure: 1. choledochoscope; 11. operating handle; 12. pipe joint; 13. mounting hole; 14. wire; 15. plug joint; 2. stone removal tube; 21. adapter; 22. stud; 23. branch pipe; 24. adapter cap; 25. throttle valve; 3. flow meter; 31. adapter ring; 32. control button; 33. display screen; 4. filter assembly; 41. sleeve; 411. connecting pipe; 412. threaded joint; 42. filter element; 421. mounting joint; 43. end cover; 431. connecting pipe; 432. connecting cap; 5. micro pump; 51. control box; 52. charging slot; 53. control panel; 54. pump head; 55. external pipe; 6. guide tube; 61. counterweight ball; 62. drainage hole; 63. mounting cap. DETAILED DESCRIPTION

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0035] Example 1

[0036] like Figure 1 and Figure 3As shown, a stone removal device for clinical treatment includes a choledochoscope 1, a stone removal tube 2 passes through the inside of the choledochoscope 1, and the stone removal tube 2 enters the bile duct after passing through the choledochoscope 1, and then the stone fragments inside the bile duct can be sucked out by using the principle of negative pressure adsorption. Two branch tubes 23 are provided at the top of the stone removal tube 2, and the branch tubes 23 are convenient for connecting two different components respectively. One of the branch tubes 23 is connected to a flow meter 3, and the branch tube 23 connected to the flow meter 3 is used to inject saline into the bile duct through the stone removal tube 2; it is convenient to calculate the suction force for sucking stone fragments according to the amount of injected saline. Another branch tube 23 is connected to a filter component 4. A micro pump 5 is provided at one end of the filter component 4 that is not connected to the branch tube 23. The water suction end of the micro pump 5 is connected to the filter component 4. The stone fragments and saline solution in the bile duct are sucked out together through the micro pump 5. The filter component 4 is used to filter out the stone fragments mixed in the saline solution. This structure is convenient for sucking out the stone fragments, and also convenient for filtering out the stone fragments, and is convenient for collecting and processing the stone fragments.

[0037] like Figure 2 As shown, an operating handle 11 is provided at the top of the choledochoscope 1. The operating handle 11 is convenient for medical personnel to hold, so as to facilitate the operation of the choledochoscope 1. A tube-through joint 12 is provided at an angle on the side of the operating handle 11. The tube-through joint 12 is convenient for installing the stone removal tube 2, and is convenient for the disassembly and use of the stone removal tube 2. A mounting hole 13 is provided in the middle of the tube-through joint 12, and the mounting hole 13 is communicated with the inner cavity of the choledochoscope 1; the mounting hole 13 is convenient for the stone removal tube 2 to penetrate into the choledochoscope 1 and to pass out of the choledochoscope 1. A wire 14 is provided at the top of the choledochoscope 1, and a plug connector 15 is provided at the end of the wire 14. The cooperation of the wire 14 and the plug connector 15 is convenient for the choledochoscope 1 to be connected to the visual device, so that medical staff can observe the images taken by the choledochoscope 1.

[0038] like Figure 3 As shown, an adapter 21 is provided at the top of the stone extraction tube 2, and a stud 22 is provided at the bottom of the adapter 21, and the stud 22 is threadedly connected to the mounting hole 13; the adapter 21 cooperates with the stud 22 to facilitate the installation of the stone extraction tube 2 at the pipe joint 12, thereby ensuring that the stone extraction tube 2 is sufficiently stable. The branch tube 23 is connected to the adapter 21, and the branch tube 23 is in communication with the stone extraction tube 2; this structure facilitates that all components connected to the branch tube 23 can be in communication with the inner cavity of the stone extraction tube 2. An adapter cap 24 is provided at the end of the branch tube 23, and the adapter cap 24 facilitates the connection of the branch tube 23 with the flow meter 3 and the filter assembly 4. A throttle valve 25 is provided on the branch tube 23, and the throttle valve 25 is convenient for controlling the opening and closing and use of the branch tube 23.

[0039] like Figure 4 and Figure 5As shown, both ends of the flow meter 3 are provided with adapter rings 31, which are threadedly connected to the adapter cap 24; this structure is convenient for the flow meter 3 to be connected to the branch pipe 23. The upper surface of the flow meter 3 is provided with a control button 32 and a display screen 33, and the control button 32 can conveniently control the flow meter 3 and facilitate the use of the flow meter 3. A charging interface is provided on the side of the flow meter 3, which is convenient for charging the flow meter 3. A central control module is integrated inside the flow meter 3, and the central control module is used to control the operation of the entire flow meter 3. The central control module is connected with a display module, a setting module, a flow control module, a warning module and a power storage module; the central control module is used to control the entire flow meter 3, the display module is used to display the injected flow in real time, the flow control module is used to set the flow upper limit, and the warning module is used to emit a warning sound when the flow exceeds the set flow upper limit; the power storage module is used to power the flow meter 3 to ensure that the flow meter 3 can be flexibly moved and used.

[0040] like Figure 6 As shown, the filter assembly 4 includes a sleeve 41, a filter element 42 and an end cap 43. The sleeve 41 is convenient for diverting the physiological saline pumped by the micro pump 5, and the filter element 42 is convenient for filtering the physiological saline. The end cap 43 is convenient for connecting with the filter element 42 and the sleeve 41, ensuring the stability of the entire filter assembly 4. A connecting pipe 411 is provided at one end of the sleeve 41 facing the branch pipe 23, and the connecting pipe 411 is convenient for connecting the sleeve 41 with the branch pipe 23. The other end is open, and a threaded joint 412 is provided at the edge of the opening; the threaded joint 412 is convenient for connecting the sleeve 41 with the end cap 43. The filter element 42 is arranged on the inner side of the sleeve 41, and a gap is provided between the filter element 42 and the inner wall of the sleeve 41. This structure is convenient for filtering out stone fragments in the physiological saline. A mounting joint 421 is provided at the opening edge of one end of the filter element 42 facing the end cover 43, and the mounting joint 421 is threadedly connected to the end cover 43. This structure facilitates the threaded connection between the filter element 42 and the end cover 43, and facilitates the removal and replacement of the filter element 42. A connecting pipe 431 is provided in the middle of the end cover 43, and the connecting pipe 431 is communicated with the inner cavity of the filter element 42, and a connecting cap 432 is rotatably connected to the end of the connecting pipe 431. The cooperation between the connecting pipe 431 and the connecting cap 432 is convenient for cooperating with the micro pump 5, and convenient for the filter assembly 4 to be threadedly connected to the micro pump 5.

[0041] like Figure 7 and Figure 8As shown, a control box 51 is provided at the bottom of the micro pump 5, and the control box 51 is convenient for controlling the operation of the micro pump 5. A charging slot 52 and a control panel 53 are provided on the side of the control box 51, and the charging slot 52 is convenient for powering the battery inside the control box 51. A pump head 54 is provided at the output end of the micro pump 5, and the pump head 54 is convenient for the operation of the micro pump 5. Two external pipes 55 are provided on the side of the pump head 54, and the external pipes 55 are respectively provided with the water suction end and the drainage end of the micro pump 5. The external pipes 55 are convenient for connecting the micro pump 5 with the branch pipe 23 and other pipelines. And the external pipe 55 as the water suction end of the micro pump 5 is threadedly connected to the connecting cap 432. An MCU control module is integrated inside the micro pump 5, and the MCU control module is used to control the operation and use of the entire micro pump 5. The MCU control module is connected with a keying module, a flow rate sensor, a power regulating module and a battery. The battery is installed inside the control box 51 and connected to the charging slot 52. The keying module is used to set the data of the micro pump 5 operation. The flow rate sensor is used to sense the flow rate of the micro pump 5 pumping the saline solution. The power regulating module is used to automatically adjust the power of the micro pump according to the set speed of pumping the saline solution. The battery is used to power the entire micro pump 5. The suction force calculation formula when the micro pump 5 pumps the saline solution inside the bile duct is as follows:

[0042]

[0043] Among them, F is the suction force when pumping the normal saline inside the bile duct, ρ is the density of the normal saline, Q is the flow rate of the normal saline injected into the bile duct recorded by the flow meter 3, and t is the set time for absorbing the normal saline in the bile duct; when using the micro pump 5, the time for absorbing the normal saline in the bile duct under the corresponding suction can be calculated according to the required suction force, and then the working time of the micro pump 5 can be set through the control panel 53.

[0044] Example 2

[0045] like Figure 1 and Figure 3As shown, a stone removal device for clinical treatment includes a choledochoscope 1, a stone removal tube 2 passes through the inside of the choledochoscope 1, and the stone removal tube 2 enters the bile duct after passing through the choledochoscope 1, and then the stone fragments inside the bile duct can be sucked out by using the principle of negative pressure adsorption. Two branch tubes 23 are provided at the top of the stone removal tube 2, and the branch tubes 23 are convenient for connecting two different components respectively. One of the branch tubes 23 is connected to a flow meter 3, and the branch tube 23 connected to the flow meter 3 is used to inject saline into the bile duct through the stone removal tube 2; it is convenient to calculate the suction force for sucking stone fragments according to the amount of injected saline. Another branch tube 23 is connected to a filter component 4. A micro pump 5 is provided at one end of the filter component 4 that is not connected to the branch tube 23. The water suction end of the micro pump 5 is connected to the filter component 4. The stone fragments and saline solution in the bile duct are sucked out together through the micro pump 5. The filter component 4 is used to filter out the stone fragments mixed in the saline solution. This structure is convenient for sucking out the stone fragments, and also convenient for filtering out the stone fragments, and is convenient for collecting and processing the stone fragments.

[0046] like Figure 2 As shown, an operating handle 11 is provided at the top of the choledochoscope 1. The operating handle 11 is convenient for medical personnel to hold, so as to facilitate the operation of the choledochoscope 1. A tube-through joint 12 is provided at an angle on the side of the operating handle 11. The tube-through joint 12 is convenient for installing the stone removal tube 2, and is convenient for the disassembly and use of the stone removal tube 2. A mounting hole 13 is provided in the middle of the tube-through joint 12, and the mounting hole 13 is communicated with the inner cavity of the choledochoscope 1; the mounting hole 13 is convenient for the stone removal tube 2 to penetrate into the choledochoscope 1 and to pass out of the choledochoscope 1. A wire 14 is provided at the top of the choledochoscope 1, and a plug connector 15 is provided at the end of the wire 14. The cooperation of the wire 14 and the plug connector 15 is convenient for the choledochoscope 1 to be connected to the visual device, so that medical staff can observe the images taken by the choledochoscope 1.

[0047] like Figure 3 As shown, an adapter 21 is provided at the top of the stone extraction tube 2, and a stud 22 is provided at the bottom of the adapter 21, and the stud 22 is threadedly connected to the mounting hole 13; the adapter 21 cooperates with the stud 22 to facilitate the installation of the stone extraction tube 2 at the pipe joint 12, thereby ensuring that the stone extraction tube 2 is sufficiently stable. The branch tube 23 is connected to the adapter 21, and the branch tube 23 is in communication with the stone extraction tube 2; this structure facilitates that all components connected to the branch tube 23 can be in communication with the inner cavity of the stone extraction tube 2. An adapter cap 24 is provided at the end of the branch tube 23, and the adapter cap 24 facilitates the connection of the branch tube 23 with the flow meter 3 and the filter assembly 4. A throttle valve 25 is provided on the branch tube 23, and the throttle valve 25 is convenient for controlling the opening and closing and use of the branch tube 23.

[0048] like Figure 4 and Figure 5As shown, both ends of the flow meter 3 are provided with adapter rings 31, which are threadedly connected to the adapter cap 24; this structure is convenient for the flow meter 3 to be connected to the branch pipe 23. The upper surface of the flow meter 3 is provided with a control button 32 and a display screen 33, and the control button 32 can conveniently control the flow meter 3 and facilitate the use of the flow meter 3. A charging interface is provided on the side of the flow meter 3, which is convenient for charging the flow meter 3. A central control module is integrated inside the flow meter 3, and the central control module is used to control the operation of the entire flow meter 3. The central control module is connected with a display module, a setting module, a flow control module, a warning module and a power storage module; the central control module is used to control the entire flow meter 3, the display module is used to display the injected flow in real time, the flow control module is used to set the flow upper limit, and the warning module is used to emit a warning sound when the flow exceeds the set flow upper limit; the power storage module is used to power the flow meter 3 to ensure that the flow meter 3 can be flexibly moved and used.

[0049] like Figure 6 As shown, the filter assembly 4 includes a sleeve 41, a filter element 42 and an end cap 43. The sleeve 41 is convenient for diverting the physiological saline pumped by the micro pump 5, and the filter element 42 is convenient for filtering the physiological saline. The end cap 43 is convenient for connecting with the filter element 42 and the sleeve 41, ensuring the stability of the entire filter assembly 4. A connecting pipe 411 is provided at one end of the sleeve 41 facing the branch pipe 23, and the connecting pipe 411 is convenient for connecting the sleeve 41 with the branch pipe 23. The other end is open, and a threaded joint 412 is provided at the edge of the opening; the threaded joint 412 is convenient for connecting the sleeve 41 with the end cap 43. The filter element 42 is arranged on the inner side of the sleeve 41, and a gap is provided between the filter element 42 and the inner wall of the sleeve 41. This structure is convenient for filtering out stone fragments in the physiological saline. A mounting joint 421 is provided at the opening edge of one end of the filter element 42 facing the end cover 43, and the mounting joint 421 is threadedly connected to the end cover 43. This structure facilitates the threaded connection between the filter element 42 and the end cover 43, and facilitates the removal and replacement of the filter element 42. A connecting pipe 431 is provided in the middle of the end cover 43, and the connecting pipe 431 is communicated with the inner cavity of the filter element 42, and a connecting cap 432 is rotatably connected to the end of the connecting pipe 431. The cooperation between the connecting pipe 431 and the connecting cap 432 is convenient for cooperating with the micro pump 5, and convenient for the filter assembly 4 to be threadedly connected to the micro pump 5.

[0050] like Figure 7 and Figure 8As shown, a control box 51 is provided at the bottom of the micro pump 5, and the control box 51 is convenient for controlling the operation of the micro pump 5. A charging slot 52 and a control panel 53 are provided on the side of the control box 51, and the charging slot 52 is convenient for powering the battery inside the control box 51. A pump head 54 is provided at the output end of the micro pump 5, and the pump head 54 is convenient for the operation of the micro pump 5. Two external pipes 55 are provided on the side of the pump head 54, and the external pipes 55 are respectively provided with the water suction end and the drainage end of the micro pump 5. The external pipes 55 are convenient for connecting the micro pump 5 with the branch pipe 23 and other pipelines. And the external pipe 55 as the water suction end of the micro pump 5 is threadedly connected to the connecting cap 432. An MCU control module is integrated inside the micro pump 5, and the MCU control module is used to control the operation and use of the entire micro pump 5. The MCU control module is connected with a keying module, a flow rate sensor, a power regulating module and a battery. The battery is installed inside the control box 51 and connected to the charging slot 52. The keying module is used to set the data of the micro pump 5 operation. The flow rate sensor is used to sense the flow rate of the micro pump 5 pumping the saline solution. The power regulating module is used to automatically adjust the power of the micro pump according to the set speed of pumping the saline solution. The battery is used to power the entire micro pump 5. The suction force calculation formula when the micro pump 5 pumps the saline solution inside the bile duct is as follows:

[0051]

[0052] Among them, F is the suction force when pumping the normal saline inside the bile duct, ρ is the density of the normal saline, Q is the flow rate of the normal saline injected into the bile duct recorded by the flow meter 3, and t is the set time for absorbing the normal saline in the bile duct; when using the micro pump 5, the time for absorbing the normal saline in the bile duct under the corresponding suction can be calculated according to the required suction force, and then the working time of the micro pump 5 can be set through the control panel 53.

[0053] like Figure 1 and Fig. 9 As shown, it also includes a guide tube 6, which is connected to the external tube 55 at the outlet end of the micro pump 5. The guide tube 6 is convenient for draining the physiological saline extracted by the micro pump 5. A mounting cap 63 is provided at one end of the guide tube 6 facing the external tube 55, and the mounting cap 63 is threadedly connected to the external tube 55. This structure is convenient for connecting the guide tube 6 with the micro pump 5. A weighted ball 61 is provided at the bottom end of the guide tube 6, and a plurality of drainage holes 62 are provided on the side of the weighted ball 61. The drainage holes 62 are communicated with the inner cavity of the guide tube 6. The weighted ball 61 is convenient for the bottom end of the guide tube 6 to be stably inserted into the container, so as to facilitate the diversion of the extracted physiological saline.

[0054] Working principle: When in use, first use the duodenoscope to reach the entrance of the patient's bile duct, and then the medical staff will pass the choledochoscopic scope 1 through the middle of the duodenoscope, so that the choledochoscopic scope 1 enters the bile duct from the entrance of the bile duct, and then the staff will manipulate the choledochoscopic scope 1 to find the location of the gallstones. When the location of the gallstones cannot smoothly pull the gallstones out of the bile duct and fall into the intestine, it is necessary to use a laser optical fiber to penetrate the middle of the choledochoscopic scope 1 to the location of the stones, and then use the laser to crush the stones. After the stones are crushed, the stone basket can be used to pull large-particle stone fragments out of the bile duct and drop them into the intestine; when the small stone fragments cannot be captured by the stone basket, the stone removal tube 2 must be used to enter When the stone is removed by the stone removal tube 2, the stone removal tube 2 is inserted into the inner side of the choledochoscope 1, and the stone removal tube 2 is made to protrude from the choledochoscope 1, and then the flow meter 3, the filter assembly 4 and the micro pump 5 are connected; and the flow meter 3 is connected to the saline supply device, and the upper limit of the injection flow is set; then, the saline supply device is used to inject saline into the bile duct through the flow meter 3 network, until the saline injection is stopped when the saline meets the demand through the choledochoscope 1, and at the same time, the amount of saline injected and the required suction are input into the micro pump 5 through the control panel 53. If there is no requirement for suction, the time for the micro pump 5 to operate can be directly set. Then close the throttle valve 25 on the branch pipe 23 corresponding to the flow meter 3, and open the throttle valve 25 on the branch pipe 23 corresponding to the micro pump 5; then start the micro pump 5, and drive the stone removal tube 2 to rotate by controlling the end of the choledochoscope 1, find the stone fragments through the choledochoscope 1, and bring the stone removal tube 2 close to the stone fragments. At the same time, the micro pump 5 draws out normal saline, and the stone fragments will be drawn away along with the normal saline. The drawn normal saline will pass through the filter, and the stone fragments will be retained in the filter, making it convenient for medical staff to collect stones, thereby achieving the purpose of stone removal.

[0055] In summary, compared with the prior art, the present application provides a stone removal tube 2 on the inner side of the choledochoscopic scope 1, and the end of the choledochoscopic scope 1 can be controlled by medical staff to twist back and forth. After the gallstones are crushed, an appropriate amount of saline can be injected into the patient's bile duct through the stone removal tube 2, and then the medical staff can control the stone removal tube 2 through the choledochoscopic scope 1 to twist to find relatively large gallstone fragments, and then start the micro pump 5. The gallstone fragments and the saline around them are sucked away by the suction force of the micro pump 5, and some fine gallstone fragments will also be sucked into the stone removal tube 2 along with the saline, so that the stone fragments inside the bile duct can be removed cleanly, avoiding some small stone fragments from being difficult to find and remove.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stone removal device for clinical treatment, comprising a choledochoscope (1), characterized in that: A stone removal tube (2) passes through the inside of the choledochoscope (1), and two branch tubes (23) are arranged at the top of the stone removal tube (2), one of the branch tubes (23) is connected to a flow meter (3), and the branch tube (23) connected to the flow meter (3) is used to inject physiological saline into the bile duct through the stone removal tube (2); the other branch tube (23) is connected to a filter assembly (4), and a micro pump (5) is arranged at one end of the filter assembly (4) not connected to the branch tube (23), and the water suction end of the micro pump (5) is connected to the filter assembly (4), and the stone fragments and the physiological saline in the bile duct are sucked out together by the micro pump (5), and the filter assembly (4) is used to filter out the stone fragments mixed in the physiological saline.

2. A stone removal device for clinical treatment according to claim 1, characterized in that: The top end of the choledochoscope (1) is provided with an operating handle (11), a tube-penetrating joint (12) is obliquely provided on the side of the operating handle (11), a mounting hole (13) is provided in the middle of the tube-penetrating joint (12), and the mounting hole (13) is communicated with the inner cavity of the choledochoscope (1); the top end of the choledochoscope (1) is provided with a guide wire (14), and the end of the guide wire (14) is provided with a plug connector (15).

3. A stone removal device for clinical treatment according to claim 1, characterized in that: The top of the stone collecting pipe (2) is provided with an adapter (21), the bottom of the adapter (21) is provided with a stud (22), and the stud (22) is threadedly connected to the mounting hole (13); the branch pipe (23) is connected to the adapter (21), and the branch pipe (23) is communicated with the stone collecting pipe (2); the end of the branch pipe (23) is provided with an adapter cap (24), and the branch pipe (23) is provided with a throttle valve (25).

4. A stone removal device for clinical treatment according to claim 3, characterized in that: The flow meter (3) is provided with adapter rings (31) at both the front and rear ends, and the adapter rings (31) are threadedly connected to the adapter cap (24); the upper surface of the flow meter (3) is provided with control buttons (32) and a display screen (33), and the side of the flow meter (3) is provided with a charging interface.

5. A stone removal device for clinical treatment according to claim 4, characterized in that: The flow meter (3) has a central control module integrated therein, and the central control module is connected to a display module, a setting module, a flow control module, a warning module and a power storage module; the central control module is used to control the entire flow meter (3), the display module is used to display the injected flow in real time, the flow control module is used to set an upper flow limit, and the warning module is used to emit a warning sound when the flow exceeds the set upper flow limit; the power storage module is used to supply power to the flow meter (3), thereby ensuring that the flow meter (3) can be flexibly moved and used.

6. A stone removal device for clinical treatment according to claim 1, characterized in that: The filter assembly (4) comprises a sleeve (41), a filter element (42) and an end cover (43); a connecting pipe (411) is provided at one end of the sleeve (41) facing the branch pipe (23); the other end is open and a threaded joint (412) is provided at the edge of the opening; the filter element (42) is arranged inside the sleeve (41); a gap is provided between the filter element (42) and the inner wall of the sleeve (41); a mounting joint (421) is provided at the edge of the opening at one end of the filter element (42) facing the end cover (43); the mounting joint (421) is threadedly connected to the end cover (43); a connecting pipe (431) is provided in the middle of the end cover (43); the connecting pipe (431) is communicated with the inner cavity of the filter element (42); and a connecting cap (432) is rotatably connected to the end of the connecting pipe (431).

7. A stone removal device for clinical treatment according to claim 1, characterized in that: The micro pump (5) is provided with a control box (51) at the bottom end, a charging slot (52) and a control panel (53) are provided on the side of the control box (51), and a pump head (54) is provided at the output end of the micro pump (5), and two external pipes (55) are provided on the side of the pump head (54), and the external pipes (55) are respectively provided with a water suction end and a water discharge end of the micro pump (5), and the external pipe (55) serving as the water suction end of the micro pump (5) is threadedly connected to the connection cap (432).

8. A stone removal device for clinical treatment according to claim 7, characterized in that: The micro pump (5) has an integrated MCU control module, the MCU control module is connected to a keying module, a flow rate sensor, a power regulating module and a battery, the battery is installed inside a control box (51), and the battery is connected to a charging slot (52); the keying module is used to set the data for the operation of the micro pump (5), the flow rate sensor is used to sense the flow rate of the physiological saline pumped by the micro pump (5), the power regulating module is used to automatically adjust the power of the micro pump according to the set speed of pumping the physiological saline; the battery is used to supply power to the entire micro pump (5).

9. A stone removal device for clinical treatment according to claim 8, characterized in that: The calculation formula of the suction force when the micro pump (5) pumps the physiological saline inside the bile duct is as follows: Wherein, F is the suction force when drawing the saline inside the bile duct, ρ is the density of the saline, Q is the flow rate of the saline injected into the bile duct recorded by the flow meter (3), and t is the set time for drawing the saline in the bile duct.

10. A stone removal device for clinical treatment according to claim 7, characterized in that: The invention also comprises a flow guide tube (6), wherein the flow guide tube (6) is connected to an external pipe (55) at the water outlet end of the micro pump (5); a mounting cap (63) is provided at one end of the flow guide tube (6) facing the external pipe (55); the mounting cap (63) is threadedly connected to the external pipe (55); a weighted ball (61) is provided at the bottom end of the flow guide tube (6); a plurality of drainage holes (62) are provided on the side of the weighted ball (61); and the drainage holes (62) are communicated with the inner cavity of the flow guide tube (6).

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