CN219089616U - A urethral protection device capable of leak monitoring - Google Patents

Abstract

The utility model discloses a leak-monitoring urethral protection device. By setting a first leak-detection point in the heat-preservation liquid flow channel of a heat-preservation catheter, and setting a second leak-measurement point for fitting to any position of a target object, the control The part is respectively electrically connected with the first leak test point and the second leak test point through the leak test wiring harness. During the operation, if the heat preservation catheter leaks, so that the heat preservation liquid flows into the urethra, the control part can detect the capacitance change or conduction between the first leak detection point and the second leak detection point, and then the control part The leakage phenomenon can be judged, the real-time monitoring in the operation process can be realized, and it is safe, reliable and easy to implement.

Description

A urethral protection device capable of leak monitoring

technical field

The utility model belongs to the technical field of medical instruments, in particular to a urethral protection device capable of leakage monitoring.

Background technique

Since the urethra passes through the middle of the prostate, unprotected cryoablation of prostate cancer will cause urethral necrotic tissue to fall off after freezing and secondary damage to adjacent tissues of the prostate, and there will be many complications such as urinary retention and urinary incontinence.

Providing thermal protection for the urethra during surgery can reduce the probability of damage caused by freezing. Expert consensus recommendation: The safe implementation of prostate cryoablation requires the configuration of imaging examination equipment, cryotherapy system, intraoperative ultrasound real-time monitoring equipment, urethral protection device, and flexible cystoscope and other urinary system inspection equipment. In summary, the current urethral insulation is a necessary safety measure for prostate cryoablation.

Existing urethral insulation generally purchases multi-supplier equipment for combined use. A concentric lumen catheter is inserted into the urethra to achieve a warming effect by circulating constant temperature saline. Use manual pressurization to provide the system with the internal pressure necessary to maintain normal circulation. And the temperature measurement function will be performed in the heated area of the system in and out to achieve a stable temperature output. Flow rate monitoring is a fuzzy judgment (whether the impeller is rotating) through direct visual observation.

The existing product does not have any leak monitoring function when it enters the human body (urethra), and there is no way to find out immediately if a leak occurs during the operation.

Utility model content

In order to solve the above problems, the utility model provides a leak-monitoring urethral protection device for inserting into the patient's urethra for heat preservation, including:

A thermal insulation conduit, the thermal insulation conduit is provided with a thermal insulation liquid flow channel;

The first leak detection point is set in the heat preservation liquid flow channel;

The second leak detection point is attached to any position of the target object;

The control part is electrically connected to the first leak test point and the second leak test point respectively through the leak test harness, and is used to monitor the capacitance change between the first leak test point and the second leak test point Or conduction, indicating whether a leak occurs;

After the thermal insulation conduit is configured with a target object, the control unit monitors the capacitance change or conduction between the first leak detection point and the second leak detection point in real time.

In the leak-monitoring urethral protection device of the present utility model, the second leak-detection point is set on the outer wall of the heat-preservation catheter, and is used to contact the urethral wall of the patient's urethra.

In the leak-monitoring urethral protection device of the present invention, the first leak detection point and the second leak detection point are both electrode terminals.

In the leak-monitoring urethral protection device of the present utility model, the electrode end is an electrode plate, an electrode sheet, or a ring-shaped electrode end.

In the urethral protection device capable of leak monitoring of the utility model, the thermal insulation catheter includes a central guide wire tube, an inner tube, an outer tube and a shunt cavity;

The outer layer tube is sheathed on the central guide wire tube; the head end of the outer layer tube is sealed and connected to the head end of the center guide wire tube, and the tail end of the outer layer tube is connected to the center guide wire The tail ends of the tubes are respectively sealed and connected to the distribution cavity and cooperate to form an accommodating cavity;

The inner layer tube is sheathed on the central guide wire tube and is located in the accommodating inner cavity, and separates the accommodating inner cavity into an inner layer flow channel and an outer layer flow channel which are connected.

In the leak-monitoring urethral protection device of the present utility model, the first leak detection point is set on the inner tube, and the leak detection harness connected to the first leak detection point passes through the inner layer flow channel Or the outer flow channel protrudes and is electrically connected to the control part.

In the leak-monitoring urethral protection device of the present utility model, the control unit includes a control unit, a capacitance detection unit, a capacitance threshold alarm unit, and a fault logic processing unit;

The first acquisition end and the second acquisition end of the capacitance detection unit are electrically connected to the first leak detection point and the second leak detection point through the leakage detection harness; and the capacitance detection unit is respectively connected to the The control unit is connected to the capacitance threshold alarm unit with signals, and the capacitance detection unit is controlled by the control unit to detect and feedback the capacitance signals of the first leak detection point and the second leak detection point information to the control unit and the capacitance threshold alarm unit;

The capacitance threshold alarm unit is signal-connected to the control unit and the fault logic processing unit respectively, and the capacitance threshold alarm unit judges whether leakage occurs according to the detection information and outputs judgment information to the control unit and the fault logic processing unit. logical processing unit;

The fault logic processing unit is used for receiving the judgment information and outputting corresponding processing information to an external actuator.

In the leak-monitoring urethral protection device of the present invention, the control part further includes an alarm module and a display unit respectively connected to the control unit by signals.

In the leak-monitoring urethral protection device of the present invention, the control part further includes an emergency stop processing unit;

The emergency stop processing unit is respectively connected to the control unit and the fault logic processing unit in signal connection; the fault logic processing unit is connected to the control unit in signal;

The control unit is controlled by the emergency stop processing unit, and outputs an emergency stop signal to the external actuator; the fault logic processing unit is controlled by the emergency stop processing unit, and outputs corresponding processing information to the external actuator.

In the leak-monitoring urethral protection device of the present utility model, the material of the leak-testing wiring harness is a wire with an insulating layer.

Compared with the prior art, the utility model has the following advantages and positive effects due to the adoption of the above technical scheme:

In one embodiment of the present invention, the first leak detection point is set in the heat preservation liquid flow channel of the heat preservation conduit, and the second leak detection point for fitting to any position of the target object is set, and the control part is respectively connected with the first leak detection point. Point and the second leak detection point are electrically connected through the leak detection harness. During the operation, if the heat preservation catheter leaks, so that the heat preservation liquid flows into the urethra, the control part can detect the capacitance change or conduction between the first leak detection point and the second leak detection point, and then the control part The leakage phenomenon can be judged, the real-time monitoring in the operation process can be realized, and it is safe, reliable and easy to implement.

Description of drawings

Fig. 1 is a schematic diagram of a leak-monitoring urethral protection device of the present invention;

Fig. 2 is another schematic diagram of the leak-monitoring urethral protection device of the present invention;

Fig. 3 is another schematic diagram of the leak-monitoring urethral protection device of the present invention;

Fig. 4 is a simplified circuit diagram of the control part of the leak-monitoring urethral protection device of the present invention.

Explanation of reference signs: 121: central guide wire tube; 122: inner layer tube; 123: outer layer tube; 131: leak detection harness; 132: first leak detection point; 133: second leak detection point; 7: control part .

Detailed ways

A leak-monitoring urethral protection device proposed by the present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the utility model will be more clear.

Referring to FIG. 1 , in one embodiment, a leak-monitoring urethral protection device for inserting into a patient's urethra for heat preservation includes a heat preservation catheter, a first leak detection point 132 , a second leak detection point 133 and a control unit 7 .

An insulating liquid flow channel is arranged in the insulating conduit. The first leak detection point 132 is set in the heat preservation liquid flow channel, and the second leak detection point 133 is set to fit and contact any position of the target object, specifically, any position on the patient's body.

The control part 7 is electrically connected to the first leak test point 132 and the second leak test point 133 respectively through the leak test harness 131, and is used to monitor the capacitance change or conduction between the first leak test point 132 and the second leak test point 133 , indicating whether a leak has occurred.

During the operation, the thermal insulation catheter is set in the urethra of the patient, and the second leak detection point 133 is attached to the patient's body. If capacitance changes or conduction occurs between the leakage point 132 and the second leakage detection point 133, the control unit 7 can judge that a leakage phenomenon occurs, which can realize real-time monitoring during the operation, and is safe, reliable, and easy to implement.

The specific structure of the leak-monitoring urethral protection device of this embodiment will be further described below:

Referring to Fig. 3, in this embodiment, in order to improve the sensitivity of detection, in addition to being arranged on the surface of the human body, the setting position of the second leak detection point 133 can also be set on the outer wall of the heat preservation catheter, that is, for the connection with the patient's urethra. The walls of the urethra are in contact. When the heat preservation catheter leaks, the second leak detection point 133 and the first leak detection point 132 can quickly pass through the leaked heat preservation liquid and the patient's body fluid to realize capacitance change or conduction, thereby prompting the occurrence of leakage.

Referring to FIG. 2 , in this embodiment, both the first leak detection point 132 and the second leak detection point 133 can be electrode terminals, specifically, electrode plates, electrode sheets, or ring-shaped electrode terminals.

In this embodiment, the thermal insulation catheter includes a central guide wire tube 121 , an inner tube 122 , an outer tube 123 and a shunt cavity.

The outer layer tube 123 is sleeved on the central wire guide tube 121; the head end of the outer layer tube 123 is sealed and connected with the head end of the central wire guide tube 121, and the tail end of the outer layer tube 123 is sealed with the tail end of the central wire guide tube 121 respectively. Connected to the shunt cavity and cooperate to form a containing cavity; the inner tube 122 is sleeved on the central guide wire tube 121 and located in the containing cavity, and separates the containing cavity into a connected inner flow channel and an outer layer runner.

Wherein, a first communication end and a second communication end may be respectively provided on the distribution cavity, and the first communication end and the second communication end are connected to the inner layer flow channel and the outer layer flow channel respectively.

The head end of the inner layer pipe 122 is spaced apart from the outer layer pipe 123 and forms a communication channel connecting the above-mentioned inner layer flow channel and the outer layer flow channel. Alternatively, the head end of the inner tube 122 is provided with a communication through hole communicating the inner flow channel and the outer flow channel. The thermal insulation liquid can flow through the inner layer flow channel and the outer layer flow channel in sequence.

The thermal insulation liquid flows into the gap between the central guide wire tube 121 and the inner tube 122 through the first connecting end of the split chamber, and then flows back to the second gap of the split cavity along the gap between the inner tube 122 and the outer tube 123. The connecting end finally flows out along the second connecting end of the split cavity, or reverse flow is also available.

Further, the first leak test point 132 can be set on the inner tube 122, and the leak test harness 131 connected to the first leak test point 132 protrudes through the inner layer flow channel or the outer layer flow channel and is electrically connected to the control part 7 , the specific setting of the flow channel can be determined according to the flow direction of the heat preservation liquid, and it is advisable to arrange the leakage detection harness 131 in a relatively short manner.

Referring to FIG. 4 , in this embodiment, the control unit may specifically include a control unit, a capacitance detection unit, a capacitance threshold alarm unit, and a fault logic processing unit. The first collection terminal and the second collection terminal of the capacitance detection unit are electrically connected with the first leak test point 132 and the second leak test point 133 respectively through the leak test wiring harness, and are used to detect the first leak test point 132 and the second test leak point 132. Capacitance signal at drain 133.

Moreover, the capacitance detection unit is respectively connected with the control unit and the capacitance threshold alarm unit, and the capacitance detection unit is controlled by the control unit to detect the capacitance signals of the first leak test point 132 and the second leak test point 133 and feed back to the control unit and capacitance threshold alarm unit.

The capacitance threshold alarm unit is respectively connected with the control unit and the fault logic processing unit. The capacitance threshold alarm unit can judge according to the detection information and output the judgment information to the fault logic processing unit and the control unit. If the leakage points 133 are connected, the capacitance signal will change, and the control unit can judge according to the change of the capacitance signal.

After the fault logic processing unit receives the judgment information, it can output the corresponding processing information to the external actuator according to the fault processing logic. Fluid pressure, flow rate and temperature are adjusted accordingly.

In this embodiment, the above-mentioned control unit 7 may further include an alarm module, a display unit, and an emergency stop processing unit that are signal-connected to the control unit, respectively.

When the control unit detects a leak, it will output a signal to the alarm module, the display unit and the emergency stop processing unit. The display unit can display the real-time capacitance value and whether it exceeds the threshold range. The alarm module can send out an alarm signal when the capacitance information exceeds the threshold range.

The emergency stop processing unit is connected to the control unit and the fault logic processing unit respectively, and can output an emergency stop signal to the control unit and the fault logic processing unit. The fault logic processing unit is also signally connected to the control unit.

The control unit can be controlled by the emergency stop processing unit, and output an emergency stop signal to the above-mentioned external actuator; the fault logic processing unit can be controlled by the emergency stop processing unit, and output corresponding processing information to the external actuator. The control unit can also be controlled by the emergency stop processing unit, output the emergency stop signal to the fault logic processing unit, and the fault logic processing unit outputs corresponding processing information to the external actuator. In this embodiment, the material of the leak detection wire harness 131 can specifically be a wire with an insulating layer, for example, a copper enameled wire with a diameter of 0.05.

The leak-monitoring urethral protection device of this embodiment takes physiological saline as an example for the heat preservation liquid. The heat preservation section of the heat preservation catheter is placed in the urethra, and the physiological saline flows in through the gap between the central guide wire tube 1211 and the inner layer tube 122 , and flows out along the gap between the inner layer tube 122 and the outer layer tube 123 . The first side leakage point is in direct contact with the physiological saline, and the second leakage detection point 133 is in direct contact with the human body. The two are electrically connected to the control unit 7 through the leak detection harness 131 . Once the thermal insulation catheter is placed in the human body and leaks, and the physiological saline comes into contact with the human body, a capacitance change or a conduction effect will occur between the first side leak point and the second leak test point 133, and the control unit 7 will send out an alarm signal. Indicates that a leak has occurred.

The embodiments of the utility model have been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Even if various changes are made to the utility model, if these changes fall within the scope of the claims of the utility model and equivalent technologies thereof, they still fall within the protection scope of the utility model.

Claims (10)

1. A leak-monitoring urethral protection device, characterized in that it is used for inserting into the patient's urethra to keep warm, comprising: A thermal insulation conduit, the thermal insulation conduit is provided with a thermal insulation liquid flow channel; The first leak detection point is set in the heat preservation liquid flow channel; The second leak detection point is attached to any position of the target object; The control part is electrically connected to the first leak test point and the second leak test point respectively through the leak test harness, and is used to monitor the capacitance change between the first leak test point and the second leak test point Or conduction, indicating whether a leak occurs; After the thermal insulation conduit is configured with a target object, the control unit monitors the capacitance change or conduction between the first leak detection point and the second leak detection point in real time. 2. The leak-monitoring urethral protection device according to claim 1, characterized in that, the second leak detection point is set on the outer wall of the heat-preservation catheter for contact with the urethral wall of the patient's urethra. 3 . The leak-monitoring urethral protection device according to claim 1 , wherein the first leak detection point and the second leak detection point are both electrode terminals. 4 . 4. The leak-monitoring urethral protection device according to claim 3, characterized in that, the electrode end is an electrode plate or an electrode piece or a ring-shaped electrode end. 5. The leak-monitoring urethral protection device according to claim 1, wherein the thermal insulation catheter comprises a central guide wire tube, an inner tube, an outer tube, and a shunt cavity; The outer layer tube is sheathed on the central guide wire tube; the head end of the outer layer tube is sealed and connected to the head end of the center guide wire tube, and the tail end of the outer layer tube is connected to the center guide wire The tail ends of the tubes are respectively sealed and connected to the distribution cavity and cooperate to form an accommodating cavity; The inner layer tube is sheathed on the central guide wire tube and is located in the accommodating inner cavity, and separates the accommodating inner cavity into an inner layer flow channel and an outer layer flow channel which are connected. 6. The leak-monitoring urethral protection device according to claim 5, characterized in that, the first leak-testing point is set on the inner tube, and the leak-testing point connected to the first leak-testing point A leak wire bundle protrudes through the inner layer flow channel or the outer layer flow channel and is electrically connected to the control part. 7. The leak-monitoring urethral protection device according to claim 1, wherein the control unit comprises a control unit, a capacitance detection unit, a capacitance threshold alarm unit and a fault logic processing unit; The first acquisition end and the second acquisition end of the capacitance detection unit are electrically connected to the first leak detection point and the second leak detection point through the leakage detection harness; and the capacitance detection unit is respectively connected to the The control unit is connected to the capacitance threshold alarm unit with signals, and the capacitance detection unit is controlled by the control unit to detect and feedback the capacitance signals of the first leak detection point and the second leak detection point information to the control unit and the capacitance threshold alarm unit; The capacitance threshold alarm unit is signal-connected to the control unit and the fault logic processing unit respectively, and the capacitance threshold alarm unit judges whether leakage occurs according to the detection information and outputs judgment information to the control unit and the fault logic processing unit. logical processing unit; The fault logic processing unit is used for receiving the judgment information and outputting corresponding processing information to an external actuator. 8 . The leak-monitoring urethral protection device according to claim 7 , wherein the control part further comprises an alarm module and a display unit which are signal-connected to the control unit respectively. 9. The leak-monitoring urethral protection device according to claim 7, characterized in that, the control part further comprises an emergency stop processing unit; The emergency stop processing unit is respectively connected to the control unit and the fault logic processing unit in signal connection; the fault logic processing unit is connected to the control unit in signal; The control unit is controlled by the emergency stop processing unit, and outputs an emergency stop signal to the external actuator; the fault logic processing unit is controlled by the emergency stop processing unit, and outputs corresponding processing information to the external actuator. 10. The leak-monitoring urethral protection device according to claim 1, characterized in that, the material of the leak-testing wire harness is a wire with an insulating layer.

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