Temperature and pressure measurement guide sheath tube of electro-hydraulic lithotripsy system

Abstract

The utility model discloses an electro-hydraulic lithotripsy system temperature and pressure measurement guide sheath tube which comprises a sheath tube body, an adapter, a first channel, an electrode assembly, a second channel, a third channel, a first connector and a second connector, the first connector is connected with a liquid injection assembly, and the second connector is connected with a pumping and draining assembly; a fourth channel is further arranged in the sheath tube body, a temperature measuring line and a pressure measuring line which are led into the fourth channel from the adapter are arranged in the fourth channel, the temperature measuring line is connected with a temperature sensor, the pressure measuring line is connected with a pressure sensor, and the temperature sensor and the pressure sensor are both arranged at a port of the fourth channel. The temperature and pressure measurement guide sheath tube for the electro-hydraulic lithotripsy system has an electrode lithotripsy function, can monitor cavity pressure and cavity temperature at a focus in the electrode lithotripsy process in real time, and is beneficial to control of electrode energy according to feedback temperature and pressure information so as to prevent normal tissues at the cavity from being damaged by local high temperature and high pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic-electric lithotripsy equipment, in particular to a temperature- and pressure-measuring guide sheath tube for a hydraulic-electric lithotripsy system. Background Art

[0002] In the treatment of biliary system stones, kidney and urinary system stones, a guide sheath is often used to establish a channel to enter the designated location and to break up the stones with lithotripsy instruments. In the process of surgical treatment of stones, it is often necessary to inject liquid medicine, and the stones remaining in the channel must be cleaned after lithotripsy. If other surgical instruments are frequently switched for operation, it will cause inconvenience to the doctor and more surgical damage to the patient. In addition, the high temperature generated by the instantaneous lithotripsy and the excessive pressure in the cavity may also have adverse effects on the patient.

[0003] In addition, the existing guide sheath has a relatively simple function. Although there are products that integrate temperature and pressure measurement functions into the sheath valve, its structure is relatively complex and not convenient for use with hydraulic and electro-liquid lithotripsy equipment. Summary of the invention

[0004] The utility model aims to provide a temperature and pressure measuring guide sheath tube for a liquid-electric lithotripsy system in view of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A temperature and pressure measuring guide sheath for an electrohydraulic lithotripsy system comprises a sheath body, one end of the sheath body is provided with an adapter, a first channel is provided in the sheath body, an electrode assembly is provided in the first channel, one end of the electrode assembly is connected to an electrohydraulic lithotripsy, and the other end of the electrode assembly passes through the adapter into the first channel and out of the first channel; a second channel and a third channel are also provided in the sheath body, a first joint connected to the second channel and a second joint connected to the third channel are provided on the adapter, the first joint is connected to an injection assembly, and the second joint is connected to a pumping assembly; a fourth channel is also provided in the sheath body, a temperature measuring line and a pressure measuring line introduced therein from the adapter are provided in the fourth channel, the temperature measuring line is connected to a temperature sensor, the pressure measuring line is connected to a pressure sensor, and the temperature sensor and the pressure sensor are both arranged at the port of the fourth channel.

[0007] The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system has been improved in structure with respect to the sheath body and its internal channel, so that it not only has the function of electrode lithotripsy, but can also monitor in real time the cavity pressure and cavity temperature of the lesion during the electrode lithotripsy process. The feedback of temperature and pressure information helps to control the electrode energy to prevent local high temperature and high pressure from causing damage to normal tissues in the cavity.

[0008] Further, the adapter is a truncated cone-shaped adapter, the outer diameter of the end connected to the sheath body is smaller than the outer diameter of the other end, and the adapter is provided with connector channels corresponding to the first channel, the second channel, the third channel and the fourth channel, wherein two connector channels connect the first connector and the second connector. The adapter utilizes a structure with one end larger than the other end to facilitate the passage of pipelines or the connection of connectors through these channels in the sheath body.

[0009] Furthermore, the temperature measuring line is connected to a temperature monitor, the pressure measuring line is connected to a pressure monitor, and the temperature monitor and the pressure monitor are connected to a host of the electrohydraulic lithotripsy.

[0010] Furthermore, the injection assembly includes an injection tube connected to the first connector, and a syringe or injection pump connected to the injection tube. The injection tube is a tube extending outside the sheath body, and the syringe or injection pump can be used to inject liquid into the injection tube and the second channel.

[0011] Furthermore, the extraction assembly includes an extraction pipe connected to the second joint, and a negative pressure adsorption system connected to the extraction pipe, which can effectively absorb the broken stones and the introduced liquid by using negative pressure.

[0012] Furthermore, the large diameter end of the adapter is also connected to an operating rod, on which an operating handle is provided, and the operating rod is a hollow structure, so that medical staff can hold the guide sheath tube to perform lithotripsy.

[0013] Furthermore, a tube clamp is provided inside the operating rod, and the tube clamp is used to connect and fix the injection tube connected to the first joint, and the end of the operating rod away from the adapter is used to sleeve the syringe.

[0014] Compared with the prior art, the beneficial effects of the utility model are: 1. The temperature and pressure measuring guide sheath of the liquid-electric lithotripsy system improves the structure of the sheath body and its internal channel, so that it can not only have the function of electrode lithotripsy, but also monitor the cavity pressure and cavity temperature of the lesion in real time during the electrode lithotripsy process. According to the feedback of temperature and pressure information, it is helpful to control the electrode energy to prevent local high temperature and high pressure from causing damage to normal tissues in the cavity; 2. The electrode assembly can be guided to the lesion through the sheath body. With the cooperation of the liquid-electric lithotripsy, the electric shock end of the electrode assembly can emit an arc, and the energy generated instantly can crush the stones; the pumping assembly can use the third channel to crush the crushed stones and the liquid at the lesion; the second channel is used as a cleaning or injection channel. On the one hand, it can inject liquid medicine into the lesion before lithotripsy or during treatment. On the other hand, it can also inject cleaning liquid into the stone crushing site after lithotripsy to flush out the small stones and liquid medicine remaining in the cavity tissue. These mixed liquids after flushing can be pumped out of the body by the third channel; 3. The temperature sensor and the pressure sensor can monitor the temperature and pressure of the lesion in real time to avoid excessive pressure or local temperature increase caused by excessive injection, thereby improving the safety and controllability of liquid-electric lithotripsy; 4. The setting of the adapter facilitates the docking of external pipelines with these channels in the sheath body, and the adapter can also be used as a component for connecting the operating rod in the future BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a temperature and pressure measuring guide sheath tube of a hydraulic and electric lithotripsy system of the utility model;

[0016] Figure 2 This is a schematic diagram of the end structure of the guide sheath tube of the utility model;

[0017] Figure 3 This is another schematic diagram of the end surface structure of the guide sheath tube of the utility model;

[0018] Figure 4 This is another structural schematic diagram of a temperature and pressure measuring guide sheath tube of a liquid-electric lithotripsy system of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the adapter of the utility model;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the electrode assembly of the utility model;

[0021] In the figure: 1. sheath body; 2. adapter; 3. first channel; 4. second channel; 5. third channel; 6. fourth channel; 7. electrode assembly; 701. positive electrode; 702. inner insulating layer; 703. negative electrode; 704. outer insulating layer; 705. lubricating sleeve; 8. electrohydraulic lithotripter; 9. first joint; 10. injection tube; 11. syringe; 12. second joint; 13. extraction tube; 14. negative pressure adsorption system; 15. temperature measuring line; 16. pressure measuring line; 17. temperature sensor; 18. pressure sensor; 19. temperature monitor; 20. pressure monitor; 21. operating lever; 22. operating handle; 23. pipe clamp. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] like Figure 1 to Figure 3 As shown, a temperature and pressure measuring guide sheath for an electrohydraulic lithotripsy system comprises a sheath body 1, an adapter 2 is provided at one end of the sheath body 1, a first channel 3 is provided in the sheath body 1, an electrode assembly 7 is provided in the first channel 3, one end of the electrode assembly 7 is connected to an electrohydraulic lithotripsy device 8, and the other end thereof passes through the adapter 2 into the first channel 3 and passes out from the first channel 3; a second channel 4 and a third channel 5 are also provided in the sheath body 1, a first joint 9 connected to the second channel 4 and a second joint 12 connected to the third channel 5 are provided on the adapter 2, the first joint 9 is connected to an injection assembly, and the second joint 12 is connected to an extraction assembly; a fourth channel 6 is also provided in the sheath body 1, a temperature measuring line 15 and a pressure measuring line 16 introduced therein from the adapter 2 are provided in the fourth channel 6, the temperature measuring line 15 is connected to a temperature sensor 17, the pressure measuring line 16 is connected to a pressure sensor 18, and the temperature sensor 17 and the pressure sensor 18 are both arranged at the port of the fourth channel 6.

[0025] The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system improves the structure of the sheath body 1 and its internal channel so that it can not only have the function of electrode lithotripsy, but also monitor the cavity pressure and cavity temperature of the lesion in real time during the electrode lithotripsy process. The feedback of temperature and pressure information helps to control the electrode energy to prevent local high temperature and high pressure from causing damage to normal tissues in the cavity.

[0026] The electrode assembly 7 can be guided to the lesion through the sheath body 1. With the cooperation of the liquid-electric lithotripter 8, the electric shock end of the electrode assembly can emit an arc, and the energy generated instantly can break the stone; the pumping assembly can use the third channel 5 to suck out the broken stones and the liquid in the lesion; the second channel 4 is used as a cleaning or injection channel. On the one hand, it can inject liquid medicine into the lesion before lithotripsy or during treatment. Some liquids play a role in protecting tissues and cooling. On the other hand, it can also inject cleaning liquid into the stone crushing site after lithotripsy to flush the small stones and liquid medicine remaining in the cavity tissue. These mixed liquids after flushing can be pumped out of the body by the third channel 5. In this process, the temperature sensor 17 and the pressure sensor 18 can monitor the temperature and pressure of the place in real time to avoid excessive pressure caused by excessive injection. If it is found that the ambient temperature in the cavity is locally increased, it can be cooled by injection, and the liquid that absorbs heat will be extracted. Through the above operation, the safety and controllability of liquid-electric lithotripsy can be further improved.

[0027] The provision of the adapter 2 facilitates the connection between the external pipeline and the channels in the sheath body, and the adapter 2 can also be used as a component for connecting the operating rod in the future.

[0028] The first channel 3 is basically a circular structure, and the second channel 4, the third channel 5 and the fourth channel 6 can be circular, elliptical or arc-shaped structures, and the arrangement methods are also various, and both symmetrical and asymmetrical distributions are possible.

[0029] Furthermore, the adapter 2 is a truncated cone-shaped connector, and the outer diameter of the end connected to the sheath body 1 is smaller than the outer diameter of the other end. The adapter 2 is provided with connector channels corresponding to the first channel 3, the second channel 4, the third channel 5 and the fourth channel 6, wherein two connector channels connect the first connector 9 and the second connector 12.

[0030] The adapter utilizes a structure in which one end is larger than the other end to facilitate the passage of pipelines or connection of connectors through these channels in the sheath body. These connectors may be Luer connectors or pin connectors.

[0031] Furthermore, the temperature measuring line 15 is connected to a temperature monitor 19 , the pressure measuring line 16 is connected to a pressure monitor 20 , and the temperature monitor 19 and the pressure monitor 20 are connected to a host of the electrohydraulic lithotripsy 8 .

[0032] The temperature sensor 17 and the pressure sensor 18 are both miniature sensors, which are arranged at the end of the sheath body 1 to sense temperature and pressure. The temperature measuring line 15 and the pressure measuring line 16 are signal lines, which transmit the sensed signals to the host computer, that is, the temperature monitor and the pressure monitor, so as to read the temperature value and the pressure value. In some embodiments, they can also be electrically connected to the host of the electrohydraulic lithotripter 8 to directly feed back the relevant information to the controller and the display screen of the electrohydraulic lithotripter.

[0033] Furthermore, the injection assembly includes an injection tube 10 connected to the first connector 9 , and a syringe 11 or an injection pump connected to the injection tube 10 .

[0034] The injection tube 10 is a tube extending outside the sheath body 1. The syringe 11 or the injection pump can be used to inject liquid inward along the injection tube 10 and the second channel 4. The syringe 11 is manually operated, and the injection pump is a micro-injection pump that can output a small amount of fluid accurately, micro-amount, uniformly and continuously.

[0035] Furthermore, the suction assembly includes a suction pipe 13 connected to the second joint 12, and a negative pressure adsorption system 14 connected to the suction pipe 13. The broken stones and the introduced liquid can be sucked out by using negative pressure.

[0036] In some embodiments, Figure 4 and Figure 5 As shown, the large diameter end of the adapter 2 is also connected to an operating rod 21, and an operating handle 22 is provided on the operating rod 21, and the operating rod 21 is a hollow structure.

[0037] The operation rod 21 and the operation handle 22 are provided to facilitate medical personnel to hold the guide sheath tube and perform lithotripsy. The operation rod 21 is provided as a hollow structure to facilitate the lead-out of the pipeline.

[0038] Furthermore, a tube clamp 23 is provided inside the operating rod 21 , and the tube clamp 23 is used to connect and fix the injection tube 10 connected to the first joint. The end of the operating rod 21 away from the adapter 2 is used to sleeve the syringe 11 .

[0039] The syringe 11 can be connected by utilizing the internal hollow structure of the operating rod 21, so that the manual injection operation can be completed while holding the operating rod 21. The injection tube is provided with an injection hole or an injection joint at the tube clamp.

[0040] In some embodiments, Figure 6 As shown, the electrode assembly 7 includes an outermost lubricating sleeve 705, an inner insulating layer 702, an outer insulating layer 704, an electrode positive electrode 701 and a plurality of electrode negative electrodes 703. The inner insulating layer 702 is arranged on the periphery of the electrode positive electrode 701, and a plurality of electrode negative electrodes 703 are arranged symmetrically around the center of the inner insulating layer 702 and covered with the outer insulating layer 704.

[0041] The electrode assembly has multiple negative electrodes, which can release multiple crushing arcs at the same time in a specified area to crush stones over a larger area; the arrangement of the inner and outer insulating layers ensures that the insulation effects at various locations on the periphery are basically the same during the discharge process of the electrode, and local breakdown, leakage and the like will not occur.

[0042] The inner and outer insulating layers can be made of polyparaxylene material, which is a protective polymer material that can be prepared using a vacuum vapor deposition process. It has good electrical insulation and protection, can meet the requirements of the ISO-13458 medical device quality management system, meet biocompatibility, is harmless to the human body, and has anti-chemical corrosion properties, so that it can protect the internal positive and negative electrodes. The lubricating sleeve 705 can be a polymer hydrophilic material.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature and pressure measuring guide sheath for a liquid-electric lithotripsy system, comprising a sheath body, one end of which is provided with an adapter, characterized in that: A first channel is provided in the sheath body, and an electrode assembly is provided in the first channel. One end of the electrode assembly is connected to the liquid-electric lithotripter, and the other end passes through the adapter into the first channel and out of the first channel; a second channel and a third channel are also provided in the sheath body, and the adapter is provided with a first joint connected to the second channel, and a second joint connected to the third channel, the first joint is connected to the injection assembly, and the second joint is connected to the extraction assembly; a fourth channel is also provided in the sheath body, and a temperature measuring line and a pressure measuring line introduced from the adapter are provided in the fourth channel, the temperature measuring line is connected to a temperature sensor, and the pressure measuring line is connected to a pressure sensor, and the temperature sensor and the pressure sensor are both arranged at the port of the fourth channel.

2. The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system according to claim 1, characterized in that: The adapter is a truncated cone-shaped connector, and the outer diameter of the end connected to the sheath body is smaller than the outer diameter of the other end. The adapter is provided with connector channels corresponding to the first channel, the second channel, the third channel and the fourth channel one by one, wherein two connector channels connect the first connector and the second connector.

3. The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system according to claim 1, characterized in that: The temperature measuring line is connected to a temperature monitor, the pressure measuring line is connected to a pressure monitor, and the temperature monitor and the pressure monitor are connected to a host of the electrohydraulic lithotripsy.

4. The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system according to claim 1, characterized in that: The injection assembly includes an injection tube connected to the first joint, and a syringe or an injection pump connected to the injection tube.

5. The temperature and pressure measuring guide sheath of the electrohydraulic lithotripsy system according to claim 1, characterized in that: The exhaust assembly includes an exhaust pipe connected to the second joint, and a negative pressure adsorption system connected to the exhaust pipe.

6. The temperature and pressure measuring guide sheath for the electrohydraulic lithotripsy system according to claim 1, characterized in that: The large diameter end of the adapter is also connected to an operating rod, on which an operating handle is provided, and the operating rod is a hollow structure.

7. The temperature and pressure measuring guide sheath for the electrohydraulic lithotripsy system according to claim 6, characterized in that: A tube clamp is arranged inside the operating rod, and the tube clamp is used to connect and fix the injection tube connected to the first joint. The end of the operating rod away from the adapter is used to sleeve the syringe.

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