JP2011167453A - Suction tube used for diseased tissue extraction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction tube with a safe bipolar electric knife function as a suction tube used for a diseased tissue extraction device. <P>SOLUTION: The suction tube 100 includes a cylinder shape suction tube body 1 comprising an insulation material. On the inner face of the suction tube body 1, an output electrode 2 and a feedback electrode 3 are formed, and wiring 4 to the output electrode and wiring 5 to the feedback electrode are respectively connected for the purpose of supplying current. The wiring 4 to the output electrode and the wiring 5 to the feedback electrode are connected to an electric knife device, i.e. an external power source, via a connector on the upper face of the suction tube body 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a suction tube used for a diseased tissue extraction apparatus.

  The inventors previously filed a lesion tissue extraction device of Patent Document 1 as a safe and accurate extraction technique in a lesion tissue extraction operation. In Patent Document 1, an accurate extraction of a diseased tissue is realized by using a suction tube as an electrode of a monopolar electric knife.

Japanese Patent Application No. 2010-13214

  However, the monopolar electric knife has a risk of damaging normal cells because the electric knife current flows over a wide range other than the lesion tissue to be extracted.

  In view of the above problems, an object of the present invention is to provide a suction tube having a safe bipolar electric knife function as a suction tube used in a diseased tissue extraction apparatus.

  In order to achieve the above object, the present invention provides a suction tube main body, an output electrode and a return electrode that are formed in the suction tube main body and allows a current to flow through the extraction site, and the output electrode and the return electrode are external power sources, respectively. And the output electrode and the return electrode are exposed on the inner surface of the suction tube body, the suction tube body and the output electrode and the return electrode are insulated, and the suction tube body The first feature is that the wiring is insulated from the wiring.

  In the first feature of the present invention, the suction tube main body is formed with a wiring opening penetrating the inner surface and the side surface, and the output electrode and the return electrode are respectively connected to an external power source. Is exposed to the side surface of the suction tube main body and is connected to the output electrode and the return electrode through the wiring opening, respectively.

  In addition, the present invention comprises an output electrode and a return electrode for flowing a current to the extraction site, and an insulator that insulates between the output electrode and the feedback electrode, the output electrode, the feedback electrode, and the A polygonal cylindrical or cylindrical suction tube is constituted by the insulator, and the surfaces of the output electrode and the return electrode on the side where the suction tube is brought into contact with the extraction site are covered with an insulating material. Is the third feature.

  In addition, the present invention includes a polygonal cylindrical or cylindrical insulator, and an output electrode and a return electrode for flowing a current to the extraction site, and one of the output electrode and the return electrode is outside the insulator. And the other is formed inside the insulator, and at the end on the side where the suction tube is brought into contact with the extraction site, one of the output electrode and the return electrode is more than the other of the output electrode and the return electrode. A fourth feature is that the output electrode and the return electrode protrude from the insulator.

  According to each of the features described above, since the electrode is made of bipolar, the current flowing through the electrode flows only to the tissue to be extracted sandwiched between the bipolar electrodes, so it does not flow to the surrounding tissue and there is a risk of damaging the surrounding tissue. Low, it is possible to safely remove the diseased tissue.

It is a figure which shows the structure of the suction tube which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the suction tube which concerns on the 2nd Embodiment of this invention. It is a figure which shows the structure of the suction tube which concerns on the 3rd Embodiment of this invention. It is a figure which shows the structure of the suction tube which concerns on the 4th Embodiment of this invention. It is a figure which shows the structure of the suction tube which concerns on the 5th Embodiment of this invention. It is a figure which shows the structure of the lesioned tissue extraction apparatus using the suction tube which concerns on this invention. It is a figure for demonstrating the procedure of diseased tissue extraction.

  First, a diseased tissue extraction apparatus using the suction tube according to the present invention will be described. FIG. 6 is a schematic diagram showing the overall configuration. The lesion tissue extraction device is connected to the suction tube (lesion tissue suction tube) 100, a vacuum pump 105 that applies negative pressure to the suction tube 100, a vacuum regulator 104 that adjusts the pressure in the suction tube 100, and the suction tube 100. And a computer 106 for controlling the vacuum regulator 104 and the electric scalpel device 109.

  The rear end of the suction tube 100 is connected to the tube 102 via the connector 101. The tube 102 is connected to a suction bottle 103 and further connected to a vacuum pump 105 via a vacuum regulator 104.

  One electrode (output electrode) provided on the suction tube 100 is connected to the energizing cable 110 via the connector 101, and the other electrode (feedback electrode) provided on the suction tube 100 is connected to the energizing cable 111 via the connector 101. It is connected to the. The energization cables 110 and 111 are connected to the electric knife device 109.

  The tube 102 applies a negative pressure to the suction tube 100, and transports the diseased tissue extracted by the suction tube 100 to the suction bottle 103.

  The vacuum regulator 104 is connected to the control computer 106 via the vacuum regulator control cable 107, and the set pressure changes according to a control signal from the control computer 106. The electric knife device 109 is connected to the control computer 106 via the electric knife device control cable 108, and the electric knife output set value is changed by the control signal of the control computer 106, and the electric knife output is started and stopped. Be controlled.

  The negative pressure required for the diseased tissue extraction device is given by the vacuum pump 105. The negative pressure generated by the vacuum pump 105 is adjusted to the pressure set by the vacuum regulator 104 and gives a negative pressure to the suction pipe 100. A pressure sensor is attached to the vacuum regulator 104 so that the negative pressure of the suction tube 100 can be confirmed. However, even if the pressure sensor is attached to the suction bottle 103 or the tube 102 or the suction tube 100 separately, it is desirable. good.

  The procedure for excising the diseased tissue is as follows.

  Adjustment of the amount of the diseased tissue extracted by the diseased tissue extraction device is realized by adjusting the pulling force due to the negative pressure of the suction tube 100. FIG. 7 shows the distal end portion of the suction tube 100 when the diseased tissue is removed.

  As shown in FIG. 7A, the tip of the suction tube 100 is brought into contact with the excision site 201 of the cell tissue 200. At this time, no negative pressure is applied to the suction tube 100. Further, a gap is not formed between the suction tube 100 and the extraction site 201.

  When the vacuum regulator 104 is adjusted by a control signal from the control computer 106 and a negative pressure is applied to the suction tube 100, a pulling force is generated inside the suction tube 100, and the extracted portion 201 is sucked as shown in FIG. . The amount of the extracted portion 201 that is sucked in varies depending on the pulling force generated in the suction tube 100 due to negative pressure.

  When a high frequency current is passed from the electric scalpel device 109 between the output electrode 2 and the return electrode 3 of the suction tube 100 in the state of FIG. 7B, the excision site 201 in contact with the inside of the suction tube 100 is cauterized, As shown in FIG. 7C, the cell tissue 200 and the excision site 201 are separated.

  When the suction tube 100 is separated from the cell tissue 200, the separated excision site 201 is transferred through the tube 102 by the negative pressure of the suction tube 100 and stored in the suction bottle 103. As a result, the excision site 201 present in the cell tissue 200 in FIG. 7A becomes a dent 202 by excision as shown in FIG. 7D.

  As described above, in the above-described lesion tissue extraction apparatus, the suction tube 100 that sucks up the lesion tissue, the vacuum pump 105 that applies negative pressure to the suction tube 100, the vacuum regulator 104 that adjusts the pressure in the suction tube, and the suction tube 100 are connected. And a computer 106 for controlling the vacuum regulator 104 and the electric scalpel device 109. The suction tube 100 serves as an electric scalpel electrode. Further, the amount of diseased tissue removed can be adjusted by adjusting the pressure of the vacuum regulator 104 and the output of the electric knife 109.

  Next, the suction tube 100 used for the above-mentioned lesion tissue extraction apparatus will be described.

(First embodiment)
FIG. 1 shows a configuration of a suction tube (suction tube with electrode) 100 according to the first embodiment of the present invention. 1A, 1B, and 1C are a front view, a top view, and a three-dimensional view of the suction tube 100, respectively. FIG. 1D is a development view of the suction tube 100, and the front surface is the inner surface of the suction tube 100.

  The suction tube 100 has a cylindrical suction tube main body 1 made of an insulating material. An output electrode 2 and a return electrode 3 are formed on the inner surface of the suction tube main body 1, and a wiring 4 to the output electrode and a wiring 5 to the feedback electrode for supplying current to each are connected. The wiring 4 to the output electrode and the wiring 5 to the return electrode are connected to the electric knife device 109 which is an external power source via the connector 101 on the upper surface of the suction pipe body 1.

  The output electrode 2, the return electrode 3, the wiring 4 to the output electrode, and the wiring 5 to the feedback electrode may be made of conductive foil, conductive plating, or conductive wire. The suction tube body 1 excluding these conductive portions must be made of an insulating material or covered with an insulating material so that the output electrode 2 and the return electrode 3 are not short-circuited.

  The suction tube body 1 is not limited to a cylindrical shape, and may be a polygonal cylindrical shape. Further, the shapes of the output electrode 2 and the return electrode 3 may be a polygon or a circle or a mesh. Further, the output electrode 2, the feedback electrode 3, the wiring 4 to the output electrode, and the wiring 5 to the feedback electrode can be divided into a plurality of parts. In that case, the output electrode 4 and the feedback electrode 5 may be alternately arranged, the output electrode 4 may be continuously arranged, the feedback electrode 5 may be continuously arranged, or the output electrode 4 and the feedback electrode may be arranged. You may arrange | position the number of 5 as a different thing.

  It is desirable that the bottom surface of the suction tube body 1 and the bottom side of the output electrode 2 or the bottom side of the return electrode 3 do not contact each other.

  It is also possible to arrange the output electrode 2 and the return electrode 3 in a spiral shape. FIG. 2 is a development view of the suction tube 100 when the electrodes are arranged in a spiral shape. The front surface of the developed view shown in FIG. 2 is the inner surface of the suction tube main body 1, and the output electrode 6 and the feedback electrode 7 are arranged in parallel. Wiring 9 is connected. The wiring 8 to the output electrode and the wiring 9 to the return electrode are connected to an external power source on the upper surface of the suction tube body 1.

  Also in this case, it is desirable that the bottom surface of the suction tube main body 1 and the bottom side of the return electrode 7 do not contact each other.

  The output electrode 6 and the feedback electrode 7 may be arranged in reverse, and the output electrode 6 may be below the feedback electrode 7. In this case, the wiring 8 to the output electrode and the wiring 9 to the feedback electrode must also be arranged so as to be connected to the output electrode 6 and the feedback electrode 7, respectively. Further, the output electrode 6 and the return electrode 7 do not necessarily have to be arranged in parallel unless they are short-circuited.

  According to this embodiment, the output electrode 6 and the return electrode 7 are exposed on the inner surface of the suction tube body 1, the suction tube body 1, the output electrode 6 and the return electrode 7 are insulated, and the suction tube body 1 and wirings 5 and 5 (or 8, 9) are insulated.

  With such a configuration, the following effects can be obtained. Most of the wiring 4 (or 8) to the output electrode and the wiring 5 (or 9) to the return electrode are on the inner surface of the suction tube main body 1 and are exposed to the outer surface only on the upper surface of the suction tube main body 1. There is little risk that the wiring to the electrode will be cut by contact with the device. In addition, since the current does not flow through the side surface of the suction pipe body 1, there is little risk of leakage.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. 3A, 3B, and 3C are a three-dimensional view, a developed view, and a cross-sectional view of the suction tube 100, respectively. In the development view of FIG. 3B, the front surface is the inner surface of the suction tube 100.

  The suction pipe 100 has a cylindrical suction pipe body 10 made of an insulating material. An output electrode 11 and a return electrode 12 are formed on the inner surface of the suction tube body 10. Further, the suction tube main body 10 is formed with a wiring opening 15 and a wiring opening 16 penetrating the inner surface and the side surface. The wiring 13 to the output electrode that supplies current to the output electrode 11 is exposed on the side surface of the suction tube body 10 and is connected to the output electrode 11 via the wiring opening 15. Similarly, the wiring 14 to the feedback electrode that supplies current to the feedback electrode 12 is exposed on the side surface of the suction tube body 10 and is connected to the feedback electrode 12 via the wiring opening 16.

  The output electrode 11, the feedback electrode 12, the wiring 13 to the output electrode, and the wiring 14 to the feedback electrode may be made of conductive foil, conductive plating, or conductive wire. The suction tube body 10 excluding these conductive portions must be made of an insulating material or covered with an insulating material so that the output electrode 11 and the return electrode 12 are not short-circuited.

  When the suction tube 100 is used, it is desirable that the wiring opening 15 and the wiring opening 16 are blocked in order to prevent a reduction in suction force.

  The shape, the number, and the arrangement position of the output electrode 11, the return electrode 12, the wiring 13 to the output electrode, and the wiring 14 to the feedback electrode are not limited to those shown in FIG. 3, but the same as in the first embodiment. The shapes of the wiring openings 15 and the wiring openings 16 are not limited to polygons, but may be circular, and the number of wirings need not match the number of wirings to the electrodes.

  It is desirable that the bottom surface of the suction tube body 10 and the bottom side of the output electrode 15 or the bottom side of the return electrode 16 do not contact each other.

  In this embodiment, the suction tube main body 10 is formed with wiring openings 15 and 16 penetrating the inner surface and the side surface, and the wires 13 and 14 for connecting the output electrode and the return electrode to the external power source are respectively connected to the suction tube. It is exposed on the side surface of the main body 10 and is connected to the output electrode 11 and the feedback electrode 12 through the wiring openings 15 and 16, respectively.

  With such a configuration, since the wiring 13 to the output electrode and the wiring 14 to the return electrode are exposed on the side surface of the suction tube main body 10, an effect that the connection of the external power source is easy can be obtained.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIG. 4A, 4B, 4C, 4D, and 4E are a front view, a side view, a top view, a bottom view, and a three-dimensional view of the suction tube 100, respectively.

  The suction tube 100 is composed of an output electrode 21, a return electrode 22, an insulator 23a, and an insulator 23b, each of which has a plate shape. The insulator 23a and the insulator 23b are disposed so as to insulate the output electrode 21 and the return electrode 22 from each other. The output electrode 21 and the return electrode 22 are entirely made of a conductive material. However, the bottom surfaces of the output electrode 21 and the return electrode 22 are insulated by a coating 24a made of an insulating material. Further, the outer surfaces of the output electrode 21 and the feedback electrode 22 are also insulated by a coating 24b made of an insulating material except for a portion connecting an external power source. In the third embodiment, the output electrode 21 and the feedback electrode 22 themselves function as wirings that connect the electrodes to an external power source.

  The shape of the suction tube 100 may be not only a polygonal cylinder but also a cylinder. Further, the number and arrangement of the output electrodes 21 and the feedback electrodes 22 are not limited to the form shown in FIG. 4, and may be constituted by a plurality of output electrodes 21 and a plurality of feedback electrodes 22 if the output electrodes 21 and the feedback electrodes 22 are not short-circuited. .

  In this embodiment, a polygonal cylindrical or cylindrical suction tube 100 is constituted by the output electrode 21, the return electrode 22, and the insulators 23a and 23b, and the output on the side where the suction tube 100 is brought into contact with the extraction site. The surfaces of the electrode 21 and the return electrode 22 are covered with insulating materials 24a and 24b.

With such a configuration, the following effects can be obtained. Since the electrode portion and the connection portion of the external power source are integrated, the electrode is hardly cut by friction. Further, since it can be formed by bonding an electrically conductive material and an insulating material, manufacture is easy.
(Fourth embodiment)
A fourth embodiment of the present invention will be described with reference to FIG. 5A, 5B, 5C, and 5D are a front view, a top view, a three-dimensional view, and a cross-sectional view of the suction tube 100, respectively. The suction tube 100 includes an output electrode 31, a return electrode 32, and an insulator 33, and each is made of a cylinder having a different diameter. The insulator 33 is sandwiched between the output electrode 31 and the feedback electrode 32 to insulate these electrodes. The output electrode 31 and the return electrode 32 are entirely or made of a conductive material. However, the bottom surface of the output electrode 31 is covered with an insulating material. Further, the conductive material may be exposed on the outer surface of the output electrode 31, or it may be covered with an insulating material. In the fourth embodiment, the output electrode 31 and the feedback electrode 32 themselves function as wirings for connecting the electrodes to an external power source.

  The bottom surface of the output electrode 31 must protrude below the bottom surface of the return electrode 32. The insulator 33 should not protrude below the output electrode 31.

  The shape of the suction tube 100 may be a polygonal cylinder as well as a cylinder. Further, the arrangement of the output electrode 31 and the feedback electrode 32 may be opposite to that in FIG. 5, that is, the output electrode 31 may be on the inside and the feedback electrode 32 may be on the outside. In this case, the feedback electrode 32 protrudes downward from the output electrode 31. The bottom surface of the return electrode 32 must be covered with an insulating material. Further, the number and arrangement of the output electrodes 31 and the feedback electrodes 32 are not limited to those shown in FIG. 5, and the output electrodes 31 and the feedback electrodes 32 may be configured as long as the output electrodes 31 and the feedback electrodes 32 are not short-circuited.

  In this embodiment, one of the output electrode 31 and the return electrode 32 is formed outside the insulator 33, and the other is formed inside the insulator 33, and the end on the side where the suction tube 100 is brought into contact with the extraction site. In this section, one of the output electrode 31 and the feedback electrode 32 protrudes from the other of the output electrode 31 and the feedback electrode 32, and one of the output electrode 31 and the feedback electrode 32 protrudes from the insulator 33.

  With such a configuration, the following effects can be obtained. Since the entire circumference of the suction tube 100 constitutes the output electrode 31 and the return electrode 32, a current can be evenly applied to the extracted tissue. Further, since the insulator 33 is formed around the return electrode 32 and the output electrode 31 is formed around the insulator 33, the manufacturing is easy. Alternatively, it can be formed by fitting different diameter pipes of a conductive material and an insulating material, and the manufacture is easy.

DESCRIPTION OF SYMBOLS 1 Suction tube main body 2 Output electrode 3 Feedback electrode 4 Wiring to output electrode 5 Wiring to feedback electrode 6 Output electrode 7 Feedback electrode 8 Wiring to output electrode 9 Wiring to feedback electrode 10 Suction tube main body 11 Output electrode 12 Feedback electrode 13 Wiring to Output Electrode 14 Wiring to Feedback Electrode 15 Wiring Opening 16 Wiring Opening 21 Output Electrode 22 Feedback Electrode 23a Insulator 23b Insulator 24a Insulating Material Coating 24b Insulating Material Coating 31 Output Electrode 32 Feedback Electrode 33 Insulator 100 Suction tube 101 Connector 102 Tube 103 Suction bottle 104 Vacuum regulator 105 Vacuum pump 106 Computer 107 Vacuum regulator control cable 108 Electric knife device control cable 109 Electric knife device 110 Electric cable 111 Electric cable 200 Cell tissue 201 Extraction site 202 Extraction Dent by

Claims (4)

A suction tube used in a lesion tissue extraction device for extracting a lesion tissue,
A suction tube body;
An output electrode and a return electrode that are formed in the suction tube main body and allow a current to flow to the extraction site;
Wiring for connecting the output electrode and the return electrode to an external power source, respectively,
The output electrode and the return electrode are exposed on the inner surface of the suction tube body, the suction tube body and the output electrode and the return electrode are insulated, and the suction tube body and the wiring are insulated. A suction tube for use in a diseased tissue extraction device.   The suction tube main body has wiring openings penetrating the inner surface and the side surface, and the wiring for connecting the output electrode and the return electrode to the external power source is exposed on the side surface of the suction tube main body and is used for the wiring. The suction tube used for a diseased tissue extraction device according to claim 1, wherein the suction tube is connected to the output electrode and the return electrode via an opening. A suction tube used in a lesion tissue extraction device for extracting a lesion tissue,
An output electrode and a return electrode for flowing current to the excision site;
An insulator that insulates between the output electrode and the return electrode;
The output electrode, the return electrode, and the insulator form a polygonal cylindrical or cylindrical suction tube, and the output electrode and the surface of the feedback electrode on the side where the suction tube is brought into contact with the extraction site A suction tube used for a diseased tissue extraction device, characterized in that is coated with an insulating material. A suction tube used in a lesion tissue extraction device for extracting a lesion tissue,
A polygonal cylindrical or cylindrical insulator;
An output electrode and a return electrode for flowing current to the excision site;
One of the output electrode and the return electrode is formed outside the insulator, and the other is formed inside the insulator, and at the end on the side where the suction tube contacts the extraction site, the output electrode and One of the return electrodes protrudes from the other of the output electrode and the return electrode, and one of the output electrode and the return electrode protrudes from the insulator.