JP6869504B2 - Multifunctional port system for endoscopic surgery - Google Patents

Description

The present invention relates to a multi-functional port system for endoscopic surgery, and more particularly to a technique for controlling the operation of a controlled device connected to the port according to the usage state of the medical device used for the endoscopic surgery.

In recent surgical operations, endoscopic surgery with a small incision is actively performed in various fields for the purpose of "minimally invasive medical treatment" that minimizes the burden on patients. In this endoscopic surgery, endoscopic surgical instruments are inserted into the body cavity through small holes made in the abdominal wall and chest wall. At that time, multiple tubular devices called ports (also called trocars) are used to insert the endoscopic surgical instruments into the body cavity. Prevents tissue damage when moving surgical instruments in and out. In addition, during laparoscopic surgery, carbon dioxide gas is sent into the abdominal cavity to secure the surgical field, and the abdominal cavity is filled with gas to inflate the abdominal cavity to prevent the abdominal wall from falling into the surgical field. This carbon dioxide injection is performed using the gap between the cavity of the port and the surgical instrument.

Further, in conventional surgical operations, an electric scalpel is used to remove tissues such as lesions, and endoscopic surgery is no exception. A problem with using this electric knife in endoscopic surgery is that when burning fat in the body, smoke containing oil called mist is generated, making it impossible to secure the field of view of the endoscope. .. In open surgery, mist diffuses into the atmosphere, but in endoscopic surgery, a small hole is made in the abdominal wall and chest wall, resulting in an almost closed space, and the mist does not diffuse and stays in the body cavity. Therefore, a method is adopted in which suction is performed from the tip of the gap by using the gap between the cavity of the port different from the gap to which the carbon dioxide gas is sent and the surgical instrument, and the mist is discharged together with the carbon dioxide gas. There is.

However, since there is a distance of several tens of centimeters from the source of the mist to the tip of the gap to be sucked, a large amount of carbon dioxide gas must be discharged to suck the mist. When a large amount of carbon dioxide gas is discharged in this way, the intra-abdominal pressure drops and the abdominal wall falls into the surgical field, narrowing the surgical field. Therefore, it is necessary to replenish the inhaled carbon dioxide gas into the abdominal cavity to maintain the intra-abdominal pressure and secure the surgical field, but this causes a problem that the amount of carbon dioxide gas used increases and the medical cost becomes high. It is happening.

Although there are various problems as described above regarding the suction of mist in endoscopic surgery, the applicant of the present application has previously proposed a drainage tube for cleaning the electric knife attached to the tip of the electric knife (under such circumstances). Patent Document 1). This is a drainage tube used to send water for cleaning or cooling the electric knife, and is formed in a cavity where the front and rear ends are open and the inside in the axial direction is inserted and held by the electric knife. A heat-resistant tube body is provided, and a lumen for water injection is formed along the axial direction on the peripheral wall of the tube body, and water from the lumen is dropped onto the electrode of the electric knife at the front end of the tube body. The water injection port is provided.

This drainage tube can clean and cool the electrosurgical knife by dropping water on the electrode of the electrosurgical knife, but by the time it sucks the mist that stays in the abdominal cavity in endoscopic surgery. It did not reach, and there were still issues to be solved. Further, especially in endoscopic surgery, there is also a request to control so that water can be dropped onto the electrodes of the electrosurgical knife and suction of mist staying in the abdominal cavity can be performed according to the timing of operation of the electrosurgical knife. It has been desired to develop a technology that enables the above.

Japanese Patent No. 5275527

Therefore, in view of the above-mentioned conventional problems, the present invention is multifunctional, which can control the operation of the controlled device connected to the port body according to the usage state of the medical device such as an electric knife. It is an object of the present invention to provide a port and a multi-functional port system.

In order to solve the above problems, the invention according to claim 1 is a multi-functional port system including a multi-functional port for guiding a medical device used for endoscopic surgery into a body cavity. The multi-functional port includes a port body having open front and rear ends and a main lumen formed in which the medical device is inserted and held in the axial direction, and the port body is inserted into the main lumen. Control to control the operation of the controlled device connected to the port body based on the magnetic noise detection unit that detects the magnetic noise generated from the medical device and the level of the magnetic noise detected by the magnetic noise detection unit. A magnetic valve is connected to the port body as a device to be controlled, and the control unit is based on the level of magnetic noise detected by the magnetic noise detection unit. It is characterized by controlling the opening / closing operation of.

The invention according to claim 2 is the invention according to claim 1, wherein the medical device is composed of an electric knife, a water injection device for dropping water on the electrode of the electric knife, and water is dropped on the electrode. A suction device for sucking the mist that is generated and stays in the body cavity is provided, and the port body of the multifunctional port communicates with the water injection device and the water sent from the water injection device is electrosurgical. A water injection lumen that drops on the electrode of the water injection device and a suction lumen that communicates with the suction device and sucks mist staying in the body cavity are provided, and the electromagnetic valve communicates with the water injection device and the water injection lumen. , And the communication passage connecting the suction device and the suction lumen can be opened and closed, and the magnetic noise detection unit detects magnetic noise generated from the electric knife inserted in the main lumen and controls the control. When the level of magnetic noise detected by the magnetic noise detection unit exceeds a predetermined level, the unit drops water sent from the water injection device onto the electrode and sucks the mist staying in the body cavity by the suction device. The electromagnetic valve is open-controlled.

According to the third aspect of the present invention, in the second aspect, the axial front end portion of the port body is formed on the electric knife mounting portion mounted near the electrode of the electric knife, and is provided on the electric knife mounting portion. The water injection lumen is formed at the front end portion at the water injection port for dropping water onto the electrode, and the suction lumen provided at the electrosurgical knife mounting portion is formed at the front end portion at the suction port for sucking the mist.

According to a fourth aspect of the present invention, in the third aspect, the water injection port is provided above the suction port and projects forward from the suction port in the axial direction of the port body.

According to the fifth aspect of the present invention, in claim 4, a sealing member for preventing suction of water dripping from the water injection port is provided at a portion of the suction port located below the water injection port. ing.

The present invention is as described above, and according to the invention of claim 1, the multifunctional port has a main lumen in which the front and rear ends are opened and the medical device is inserted and held inside in the axial direction. The port body is provided with a magnetic noise detection unit that detects magnetic noise generated from a medical device inserted in the main lumen, and magnetic noise detected by the magnetic noise detection unit. Based on the level, a control unit that controls the operation of the controlled device connected to the port body is provided, and a solenoid valve is connected to the port body as the controlled device, and the control unit is provided. Controls the opening / closing operation of the solenoid valve based on the level of magnetic noise detected by the magnetic noise detection unit, so that it is connected to the port body according to the operating state of the medical device inserted in the main lumen of the port body. The operation of the solenoid valve can be appropriately controlled.

According to the invention of claim 2, the medical device is composed of an electric scalpel, and is generated by a water injection device for dropping water on the electrode of the electric scalpel and water being dropped on the electrode. A suction device for sucking mist staying in the body cavity is provided, and the port body of the multifunctional port communicates with the water injection device, and the water sent from the water injection device is sent to the electrode of the electric knife. A water injection lumen to be dropped and a suction lumen that communicates with the suction device and sucks mist staying in the body cavity are provided, and the electromagnetic valve is a communication passage that communicates the water injection device and the water injection lumen, and the said. A communication passage connecting the suction device and the suction lumen is provided so as to be openable and closable. The magnetic noise detection unit detects magnetic noise generated from an electric knife inserted in the main lumen, and the control unit detects magnetic noise. When the level of magnetic noise detected by the magnetic noise detection unit exceeds a predetermined level, the water sent from the water injection device is dropped onto the electrodes, and the electromagnetic wave is so as to suck the mist staying in the body cavity by the suction device. Since the valve is controlled to open, when the electric knife inserted in the main lumen of the port body is activated, water from the water injection device can be reliably dropped onto the electrode and mist can be sucked from the body cavity.

According to the invention of claim 3, the axial front end portion of the port body is formed on the electrosurgical knife mounting portion mounted near the electrode of the electrosurgical knife, and the water injection lumen provided on the electrosurgical knife mounting portion is provided. The front end is formed at the water injection port for dropping water onto the electrode, and the suction lumen provided on the electric knife mounting part is formed at the front end at the suction port for sucking the mist. The suction port is made to follow the movement of the electrode of the electric knife, so that water can be dropped onto the electrode and mist can be surely sucked.

According to the invention of claim 4, since the water injection port is provided above the suction port and protrudes forward from the suction port in the axial direction of the port body, it is an electrode of an electric knife. Water can be dropped more reliably on the surface.

According to the invention of claim 5, a sealing member for preventing suction of water dripping from the water injection port is provided at a portion of the suction port located below the water injection port. , It is possible to prevent the water dropped from the water injection port from being sucked from the suction port.

It is a figure which shows the whole structure of the multi-functional port which concerns on one Embodiment of this invention. It is a cross-sectional view of the above-mentioned multifunctional port. It is a cross-sectional view taken along the line AA' showing the internal structure of a port body. It is a cross-sectional view taken along the line BB'showing the internal structure of a suction tube. It is a CC'line sectional view which shows the internal structure of a connecting pipe. It is an enlarged front view of the electric knife mounting part. It is an enlarged left side view of the electric knife mounting part. It is a block diagram which shows the structure of the housing part. It is a figure which shows the whole outline of the multi-functional port system which concerns on one Embodiment of this invention. It is a figure explaining the usage state of a multi-functional port system. It is a flow chart which shows the flow of control of a solenoid valve. It is an enlarged view of the port tip in the use state of a multi-functional port.

Hereinafter, with reference to the drawings, a configuration of a multi-functional port according to an embodiment of the present invention will be described first, and then a multi-functional port system including the port will be described.

In FIGS. 1 to 7, 1 indicates a multifunctional port, and the port 1 mainly includes a port portion 2, a connecting pipe 3, and an electric knife mounting portion 4.

(Port part 2)
The port portion 2 includes a port body 5 formed in a substantially cylindrical shape. The port body 5 is made of a mantle tube made of a material generally used in medical devices such as silicone rubber and polycarbonate, and a main lumen 6 through which a medical device such as an electric knife is inserted is along the axial direction. Is formed. A reinforcing pipe 7 is provided on the outer periphery of the main lumen 6 to prevent the port body 5 from being damaged when the medical device moves in the lumen 6 (FIG. 3). A suction lumen 8 is formed in the upper part of the main lumen 6 along the axial direction, and a water injection tube (water injection lumen) 9 is arranged inside the suction lumen 8.

Further, a branch portion 10 is formed in the port body 5, a suction pipe 11 is attached to the branch portion 10, and the suction pipe 11 is further reinforced and fixed by a reinforcing member 12. As shown in FIG. 4, the suction pipe 11 has an independent suction lumen 13 and a water injection lumen 14 formed inside the pipe, and the suction lumen 13 and the water injection lumen 14 are the suction lumen 8 of the port body 5 described above. And the water injection tube (water injection lumen) 9 communicates with each other. A water injection pipe 15 is branched from the middle of the suction pipe 11, and the water injection lumen 14 communicates with the water injection pipe 15. The diameter of the suction lumen 13 is preferably formed to be larger than the diameter of the water injection lumen 14 in order to efficiently suck the mist from the body cavity.

A housing portion 16 in which a coil or the like for detecting magnetic noise generated from a medical device is housed is provided on the rear end side of the port body 5. A cavity R communicating with the main lumen 6 of the port body 5 is formed in the housing portion 16, and a medical device such as an electric knife is guided from this cavity R into the main lumen 6 of the port body 5. The housing portion 16 is connected to a coil (magnetic noise detection unit) that detects magnetic noise generated from a medical device such as an electric knife inserted in the main lumen 6 and to the housing portion 16 according to the level of the detected magnetic noise. A microcomputer (control unit) that controls the operation of the controlled device such as a solenoid valve is provided, which makes it possible to control the controlled device according to the usage state of the medical device such as an electric knife. .. The detailed configuration of the housing portion 16 will be described later.

(Connecting pipe 3)
The connecting tube 3 is a tube for connecting the port portion 2 and the electric knife mounting portion 4 formed at the front end of the port portion 2, and is spirally formed of, for example, a soft, heat-resistant and highly elastic silicone rubber. Is formed in. As shown in FIG. 5, the connecting pipe 3 is a double lumen tube in which a suction lumen 17 and a water injection lumen 18 are independently formed in the pipe, and the suction lumen 17 and the water injection lumen 18 are described above. It communicates with the suction lumen 8 of the port body 5 and the water injection tube (water injection lumen) 9, respectively. The diameter of the suction lumen 17 is preferably formed to be larger than the diameter of the water injection lumen 18 in order to efficiently suck the mist from the body cavity.

(Electric knife mounting part 4)
The electric knife mounting portion 4 is a multi-lumen type tube mounted in the vicinity of the electrode at the tip of the electric knife, and is made of a soft and heat-resistant material used in medical devices such as silicone rubber. The electric knife mounting portion 4 is provided with a substantially cylindrical tube body 4', and a main lumen 20 into which the electric knife is inserted is formed along the axial direction of the tube body 4'. Further, the tube body 4'has a beak-shaped piece 23 whose upper front end portion protrudes forward, and the beak-shaped piece 23 has a suction lumen 21 having a front end formed in a suction port S along the main lumen 20. It is formed (FIGS. 6 and 7).

A water injection tube (water injection lumen) 22 is provided on the peripheral wall of the tube body 4'. The water injection tube 22 extends from the peripheral wall of the tube body 4'to the upper surface of the beak-shaped piece 23, and its front end is formed at the water injection port T. The water injection port T is provided above the suction port S and slightly protrudes forward from the suction port S. By doing so, water can be reliably dropped from the water injection port T to the electrode. Further, a sealing member 24 for preventing suction of water dripping from the water injection port T is provided at a portion of the suction port S located below the water injection port T. The suction lumen 21 and the water injection lumen 22 communicate with the suction lumen 17 and the water injection lumen 18 of the connecting pipe 3, respectively.

(Housing part 16)
Next, the configuration of the housing portion 16 will be described in detail. FIG. 8 is a block diagram showing a detailed configuration of the housing portion 16. As shown in FIG. 8, the housing unit 16 includes a coil (magnetic noise detection unit) 30, a magnetic field strength detection circuit 31, an amplifier circuit 32, a microcomputer (control unit) 33, an insulation and drive circuit 34, and a power supply stabilization circuit 35. And a low noise power supply 36. The coil 30 is provided so as to surround the cavity R formed in the housing portion 16 in the radial direction, and detects magnetic noise generated from a medical device such as an electric knife.

The magnetic field strength detection circuit 31 converts the magnetic field strength (dB value) corresponding to the magnetic noise detected by the coil 30 into a DC voltage. The amplification circuit 32 predeterminedly amplifies the DC voltage converted by the magnetic field strength detection circuit 31. The amplification by the amplifier circuit 32 does not necessarily have to be performed, and may be performed as necessary when the output level of the magnetic noise is weak.

The microcomputer (control unit) 33 converts the DC voltage converted by the magnetic field strength detection circuit 31 into a digital value (AD conversion), and compares the converted digital value with a preset upper limit threshold value of the voltage. Then, when the DC voltage value exceeds the upper limit threshold value, it is determined that the medical device such as an electric knife has been activated.

When the microcomputer 33 determines that the medical device such as the electric knife has been activated, the insulation and drive circuit 34 transmits an operation control signal (ON signal) to the controlled device connected to the housing portion 16. Examples of the controlled device include a solenoid valve, and a control example in this case will be described later.

The power supply stabilizing circuit 35 receives a 5V power supply from an external power supply device, and from the supplied 5V power supply, insulates the microcomputer 33 from the microcomputer 33 and provides a 3.3V power supply necessary for the operation of the drive circuit 34, respectively. Supply to. Further, the power supply stabilizing circuit 35 supplies a 3.3 V power supply to the low noise power supply 36. The low noise power supply 36 supplies the 3.0V power supply necessary for the operation of the magnetic field strength detection circuit 31 and the amplifier circuit 32 from the 3.3V power supply supplied from the power supply stabilization circuit 35 to the circuits 31 and 32, respectively.

A one-sided valve 27 is provided at the connection portion 25 of the housing portion 16 with the port body 5 (FIG. 2). On the other hand, the valve 27 is a valve for preventing the pneumoperitoneum gas filled in the abdominal cavity from leaking out of the port 2 through the main lumen 6 of the port body 5 and the cavity R.

(Multifunctional port system 50)
Next, a multi-functional port system 50 configured by using the multi-functional port 1 and an operation example thereof will be described with reference to the drawings.

FIG. 9 is a diagram showing a schematic configuration of the multifunctional port system 50. In this system 50, first, the handpiece 61 of the electric knife connected to the electric knife main body device 60 (hereinafter, simply referred to as the electric knife 61) is prepared, and the multifunctional port 1 is set in the abdominal cavity of the patient. .. Then, the electric knife 61 is inserted into the main lumen 6 of the port body 5 from the housing portion 16 side of the port 1, and the electric knife mounting portion 4 is attached near the electrodes 63 and 63'at the tip of the electric knife 61. Further, a suction device 65 is connected to the suction pipe 11 of the port 1 via a tube 64a, and a water injection device (saline bag) 66 is connected to the water injection pipe 15 of the port 1 via a tube 64b.

A solenoid valve 70 is provided in the middle of the suction pipe 11. The solenoid valve 70 is provided so that the suction lumen 13 and the water injection lumen 14 in the suction pipe 11 can be opened and closed. Further, the solenoid valve 70 is connected to the housing portion 16 of the port 1 via the solenoid valve control device 71.

A power supply device 72 is connected to the solenoid valve control device 71. The solenoid valve control device 71 operates by receiving the power supply from the power supply device 72, and further supplies the power supply necessary for the operation of the microcomputer 33 to the power supply stabilization circuit 27 in the housing portion 16. The solenoid valve control device 71 is provided with a switching circuit (not shown), and keeps the solenoid valve 70 in a closed state in normal times when the operation of the electric knife 61 is stopped. At this time, between the suction device 65 and the solenoid valve 70, the inside of the suction lumen 13 is maintained at a negative pressure by suction by the suction device 65. Further, between the water injection device 66 and the solenoid valve 70, the inside of the water injection lumen 14 is filled with the physiological saline solution sent from the water injection device 66. This completes the preparation for use of the system 50.

Next, a usage example of the system 50 will be described. FIG. 10 is a usage state diagram of the system 50, and FIG. 11 is a flow diagram showing a flow of control of the solenoid valve 70 by the system 50. In FIG. 10, 73 and 74 are ports (trocars), which are preset in the patient's abdomen. The surgeon inserts the endoscope 75 into the port 73, and injects carbon dioxide gas into the abdominal cavity through a gap between the lumen of the port 73 and the endoscope 75 by a gas injection device (not shown) to inflate the abdominal cavity. To secure the surgical field. Then, the forceps 76 are inserted into the port 74 to grasp the tissue U such as the lesion to be excised, and the electric knife 61 is inserted from the housing portion 16 side of the port 1 into the port portion 2 (S01 in FIG. 11).

At this time, at the port 1, the magnetic noise generated from the electric knife 61 is detected by the coil 30 provided in the housing portion 16 (S02). The magnetic noise detected by the coil 30 is converted into a DC voltage by the magnetic field strength detection circuit 31, and is amplified by the amplifier circuit 32 as necessary. Then, the microcomputer 33 converts the voltage into a digital value, and determines whether or not the converted value exceeds a preset upper limit threshold value, that is, whether or not the magnetic noise exceeds a predetermined level (S03). ..

As a result, if the voltage value after digital conversion does not exceed the upper limit threshold value (No in S03), the microcomputer 33 determines that the electric knife 61 is not operating, and any signal is sent to the solenoid valve control device 71. Do not send. During that time, the electromagnetic valve control device 71 keeps the electromagnetic valve 70 in the closed state (S04).

On the other hand, if the voltage value after digital conversion exceeds the upper limit threshold value (Yes in S03), the microcomputer 33 determines that the magnetic noise has exceeded a predetermined level, that is, the electric female 61 has been activated, and the insulation and drive circuit. An operation control signal (ON signal) is transmitted to the solenoid valve control device 71 via 34.

When the solenoid valve control device 71 receives an operation control signal (ON signal) from the microcomputer 33, the solenoid valve control device 71 opens the solenoid valve 70 by an internal switching circuit (S05). Then, the suction lumen 13 and the water injection lumen 14 in the closed suction pipe 11 are opened, and each water injection lumen (water injection pipe 15, water injection lumen 14 of the suction pipe 11) from the water injection device 66 to the electric knife mounting portion 4 is opened. The water injection tube 9 of the port body 5, the water injection lumen 18 of the connecting pipe 3, and the water injection tube 22) of the electric knife mounting portion 4 communicate with each other. In this way, the physiological saline delivered from the water injection device 66 is dropped from the water injection port T at the tip of the water injection tube 22 to the electrodes 63 and 63'of the electric knife 61 through each water injection lumen (see FIG. 12).

Further, when the electromagnetic valve 70 is opened, similarly, each suction lumen from the suction device 65 to the electric knife mounting portion 4 (suction lumen 13 of the suction tube 11, suction lumen 8 of the port body 5, and suction of the connecting tube 3). The lumen 17 and the suction lumen 21) of the electric knife mounting portion 4 communicate with each other. In this way, each suction lumen becomes a negative pressure due to the suction by the suction device 65, and the mist 77 is sucked from the suction port S at the tip of the suction lumen 21. In this way, by controlling the microcomputer 33 to open the solenoid valve 70 when the electric knife 61 is operated, water is injected into the electrodes 63 and 63'and mist is sucked from the abdominal cavity.

Next, in the state where the electric knife 61 is operating, the coil 30 detects the magnetic noise generated from the electric knife 61 (S06), the microcomputer 33 digitally converts the voltage value, and the converted voltage value is calculated. It is determined whether or not it is below the lower limit threshold value (S07). Here, when the voltage value does not fall below the lower limit threshold value (No in S07), the microcomputer 33 determines that the operation of the electric knife 61 is continuing, and does not transmit any signal to the solenoid valve control device 71. During that time, the solenoid valve control device 71 keeps the solenoid valve 70 in the open state (S08). In this way, while the electric knife 61 is operating, water injection into the electrodes 63 and 63'and suction of mist from the abdominal cavity are continued.

On the other hand, in S07, when the voltage value falls below the lower limit threshold value, the microcomputer 33 determines that the operation of the electric knife 61 has stopped (Yes in S07), and operates the solenoid valve control device 71 via the insulation and drive circuit 34. A control signal (OFF signal) is transmitted. When the solenoid valve control device 71 receives an operation control signal (OFF signal) from the microcomputer 33, the solenoid valve control device 71 controls to close the solenoid valve 70 (S09). Then, the suction lumen 13 and the water injection lumen 14 in the open suction tube 11 are closed, and the water injection from the water injection device 66 to the electrodes 63 and 63'and the suction of the mist from the abdominal cavity by the suction device 65 are stopped. .. When the water injection from the water injection device 66 and the suction of the mist are stopped, the process returns to S02 again, and the process from S02 to S09 is repeated in the same manner.

As described above, according to the multi-functional port 1 and the multi-functional port system 50 of the present invention, a coil (magnetic noise detection unit) that detects magnetic noise generated from a medical device such as an electric knife 61 inserted in the port 1. ) 30, and a microcomputer (control unit) 33 that controls the operation of the solenoid valve 70 connected to the port body 5 based on the level of the magnetic noise detected by the coil 30. The opening / closing operation of the solenoid valve 70 connected to the port 1 can be appropriately controlled according to the operating state of the medical device such as a scalpel.

Further, according to the multifunctional port system 50 of the present invention, when the level of magnetic noise detected by the coil 30 exceeds a predetermined level, water sent from the water injection device 66 is dropped onto the electrodes, and the suction device 65 causes the body cavity. Since the electromagnetic valve 70 is open-controlled so as to suck the mist staying inside, the water from the water injection device 66 is surely dropped onto the electrodes 63 and 63'at the timing when the electric knife 61 inserted in the port 1 operates. At the same time, the mist can be sucked from the inside of the body cavity by the suction device 65.

In the above embodiment, the case where the electric knife 61 is used as the medical device inserted into the port 1 has been described as an example, but the medical device is not limited to this, and may be, for example, an endoscope. .. Even in this case, it is possible to detect the magnetic noise generated from the endoscope and control the opening / closing operation of the solenoid valve 70 according to the detection result.

Further, in the above embodiment, the case where the control target device is the solenoid valve 70 has been described as an example, but the control target device is not limited to this, and other devices may be used. In short, any device may be used as long as it is a device that performs some operation based on an operation control signal transmitted from the microcomputer 33 according to a determination result of an operating state of a medical device such as an electric knife. As described above, the above-described embodiment is merely a preferable example, and it goes without saying that the detailed design and the like of the present invention can be arbitrarily changed or modified as long as it is within the scope of the claims.

1 Multifunctional port 2 Port part 3 Connecting pipe 4 Electric knife mounting part 5 Port body 6 Main lumen 8 Suction lumen 9 Water injection tube (water injection lumen)
11 Suction pipe 15 Water injection pipe 16 Housing part 24 Sealing member 30 Coil (magnetic noise detection part)
33 Microcomputer (control unit)
50 Multifunctional port system 61 Electric knife 63, 63'Electrode 65 Suction device 66 Water injection device (saline bag)
70 Solenoid valve (device to be controlled)
71 Solenoid valve controller S Suction port T Water injection port

Claims (5)

A multi-functional port system that includes a multi-functional port that guides medical equipment used in endoscopic surgery into the body cavity.
The multi-functional port
It has a port body with front and rear ends open and a main lumen formed to insert and hold the medical device inside in the axial direction.
This port body is connected to the port body based on a magnetic noise detection unit that detects magnetic noise generated from a medical device inserted in the main lumen and a level of magnetic noise detected by the magnetic noise detection unit. A control unit that controls the operation of the controlled device is provided, and a control unit is provided.
A solenoid valve is connected to the port body as the controlled device.
The control unit is a multifunctional port system characterized in that the opening / closing operation of the solenoid valve is controlled based on the level of magnetic noise detected by the magnetic noise detection unit. The medical device is composed of an electric knife and
A water injection device for dropping water on the electrode of the electric knife and a suction device for sucking mist generated by dropping water on the electrode and staying in the body cavity are provided.
The port body of the multi-functional port has
A water injection lumen that communicates with the water injection device and drops the water sent from the water injection device onto the electrode of the electric knife.
A suction lumen that communicates with the suction device and sucks mist that stays in the body cavity is provided.
The solenoid valve is provided so as to be able to open and close a communication passage connecting the water injection device and the water injection lumen and a communication passage connecting the suction device and the suction lumen.
The magnetic noise detection unit detects magnetic noise generated from an electric knife inserted in the main lumen, and detects the magnetic noise.
When the level of magnetic noise detected by the magnetic noise detection unit exceeds a predetermined level, the control unit drops water sent from the water injection device onto the electrode, and the suction device sucks the mist staying in the body cavity. The multifunctional port system according to claim 1, wherein the solenoid valve is open-controlled so as to be used. The axial front end portion of the port body is formed on the electrosurgical knife mounting portion mounted near the electrode of the electrosurgical knife.
The water injection lumen provided on the electrosurgical knife mounting portion is formed at the water injection port at which the front end portion drips water onto the electrode, and the suction lumen provided on the electrosurgical knife mounting portion sucks the mist at the front end portion. The multifunctional port system according to claim 2, which is formed on a suction port. The multifunctional port system according to claim 3, wherein the water injection port is provided above the suction port and protrudes forward from the suction port in the axial direction of the port body. The multifunctional port system according to claim 4, wherein a sealing member for preventing suction of water dripping from the water injection port is provided at a portion of the suction port located below the water injection port.

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