JP2007175159A - Electrode pad - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode pad to be attached to a patient as an opposite pole plate of an electrocautery device which is produced without time and effort. <P>SOLUTION: The electrode pad 5 has a pad 6 attached to the human body as an opposite pole plate of an electrocautery and having an electrode plate 15 of a predetermined area and a cord 3 having one end connected to the electrode part 21 of the electrode plate 15. The electrode pad has a connector 23 for connecting the electrode part 21 and the cord 3 while placing one on the other. The connector 23 has a pair of covering pieces arranged on the electrode part 21 side and the cord 3 side for covering the electrode part 21. The covering pieces have insulating quality and connects the overlapped electrode part 21 and the cord 3 by clamping them via an elastomer. In order to keep the electrode part 21 and the cord 3 clamped, counter faces of the covering pieces have fitting parts which fit with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electrode pad that is brought into close contact with a patient, for example, as a counter electrode plate of an electric scalpel device.

  Generally, an electric scalpel device has an electric scalpel electrically connected to a device main body having a high frequency generation circuit, and an electrode pad that is electrically connected to the device main body and used as a counter electrode plate of the electric scalpel (for example, a patent) Reference 1). The electrode pad is an earth electrode that collects a high-frequency current that flows from the apparatus main body through the scalpel tip electrode of the electric knife to the human body and reduces the current density over a wide area.

The apparatus main body and the electrode plate are connected via a cord. In general, the electrode plate and the cord are connected by caulking one end portion of the cord to the electrode portion of the electrode plate. Furthermore, in order to prevent an electric shock by touching the patient with one end portion of the cord or the electrode portion of the electrode plate, the connecting portion between the end portion of the cord and the electrode portion of the electrode plate is wound using an insulating tape or the like.
Japanese Patent No. 3714982

  However, the work of caulking the end portion of the cord to the electrode portion of the electrode plate is time-consuming, and the work of insulating the connection portion between the end portion of the cord and the electrode portion of the electrode plate from the outside is added to manufacture the electrode pad. It took more time and effort.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrode pad that does not require much time for manufacturing.

  The electrode pad of the present invention is an electrode pad having a pad main body having an electrode plate of a predetermined area and attached to a human body as a counter electrode plate of an electric knife, and a cord having one end connected to the electrode portion of the electrode plate A connecting tool for connecting the electrode part and the cord in an overlapped state is provided, and the connecting tool is provided on each of the electrode part side and the cord side to cover and overlap the electrode part and the cord. And a pair of insulating covering pieces that are connected by being sandwiched through an elastic body, and the opposing faces of the covering pieces are fitted to each other so as to hold the electrode portion and the cord sandwiched therebetween. It has the fitting part to wear.

  In the above configuration, the electrode portion and the cord are overlapped, and the electrode portion and the cord are pressed in the overlapping direction with an easy operation of covering with a pair of covering pieces from both sides, and are securely brought into electrical contact with each other. The state where the electrode part and the cord are overlapped and in contact with each other is held by fitting, and the electrode part and the cord are sandwiched with an elastic body interposed therebetween. The cord is securely held. In addition, since the electrode portion is covered with the pair of insulating covering pieces, the connection portion with the cord can be insulated from the outside, and the step of winding the insulating tape as in the conventional method is not necessary.

  In the electrode pad of the present invention, the electrode plate is bisected into a predetermined area in an insulated state, each electrode plate is provided with an electrode portion, and a separate cord is connected to each electrode portion via a connector. It is characterized by that.

  In the above configuration, each electrode plate has a predetermined area and is divided into two in an insulated state, and one end of the cord is connected to each electrode portion. Even if the electrode is separated from the electrode portion, the other cord is kept in electrical connection with the electrode portion.

  The electrode pad of the present invention is characterized in that each electrode part and the cords connected to each electrode part are connected by one connecting tool, and the connecting tool has a partition part for insulating the electrode part and the cords from each other. .

  In the above configuration, since the electrode part and the cord connected thereto are provided with a partition part, even the single connection tool is reliably insulated.

  The electrode pad according to the present invention is characterized in that the fitting portion is formed in a columnar shape, and a locking tool for locking to the outer peripheral portion of the fitting portion is provided at one end portion of the cord.

  In the above configuration, since the locking tool is locked to the fitting portion, the resistance force against the pulling force acting on the cord is increased by that much, so that one end portion of the cord is unlikely to be detached from the electrode portion.

  In the electrode pad of the present invention, the locking tool has an annular portion that externally fits the fitting portion.

  In the above configuration, since the locking portion has an annular portion, one end portion of the cord does not come off from the electrode portion.

  The electrode pad of the present invention is characterized in that the electrode plate is covered with an elastic covering, and the elastic body uses a part of the elastic covering.

  The said structure WHEREIN: A separate elastic body becomes unnecessary by making the elastic cover body which covers the electrode plate containing an electrode part into the said elastic body.

  According to the electrode pad of the present invention, the cord can be electrically connected to the electrode portion by a simple operation of sandwiching the electrode portion and the cord by the pair of insulating covering pieces. In addition, the elastic body is pressed against the elasticity to reduce the thickness, and the fitting portions are fitted to each other, so that the fitting state can be reliably maintained, and as a result, the electrical connection between the electrode portion and the coat Connection is reliably maintained. Moreover, since the electrode portion is covered with the covering piece of the connection tool, the connection portion is reliably insulated from the outside by a simple operation.

  Hereinafter, an electrode pad according to an embodiment of the present invention will be described using an electrode pad attached to an electric knife device as an example. FIG. 1 is a view showing the state of use of the electric knife device. As shown in FIG. 1, an electric knife device 1 includes an apparatus main body 2 having a high-frequency generating circuit, an electric knife 4 electrically connected to the apparatus main body 2 by a cord 3, and an electric knife 4 connected to the device main body 2 by an electric cord 3. And electrode pads 5 connected to each other.

  As shown in the figure, when this electric scalpel device 1 is used, a high-frequency current is applied between the electrode pad 5 and the electric scalpel 4 from the device body 2 by the human body with the electrode pad 5 in close contact with the patient H, Incision and coagulation are performed at the tip of the electric knife 4. In addition, since the structure of the electric knife 4 and the apparatus main body 2 is the same as that of the past, the description is abbreviate | omitted.

  FIG. 2 is an overall configuration diagram of the electrode pad 5. As shown in FIG. 2, the electrode pad 5 includes a pad body 6 and a cord 3 connected to the pad body 6. In addition, as shown in FIG. 3, the cord 3 is a long product in which two cords are bundled, and the tip of the cord 3 is divided into two forks, and a metal locking tool 7 is attached to each tip by soldering or the like. Electrically connected. The locking member 7 includes a connecting portion 8 connected to the tip of the cord 3 and a metal and thin plate-like annular portion 10 formed integrally with the tip of the connecting portion 8. The inner diameter of the annular portion 10 is set slightly larger than the outer diameter of the fitting portion 11 described later.

Here, the configuration of the pad body 6 will be described with reference to FIGS. FIG. 4 is a schematic diagram showing a cross-sectional view in which each portion is exaggerated. The pad main body 6 includes a sheet-like elastic covering 12 positioned on the outermost side when viewed from the patient H side, and a PET film adhered to the inner surface of the elastic covering 12 via an adhesive layer 13 that is applied to the entire surface. A synthetic resin layer 14 made of a synthetic resin film, a metal foil electrode plate 15 bonded to the inner surface of the synthetic resin layer 14, a conductive adhesive 16 bonded to the inner surface of the electrode plate 15, and a conductive material. A transparent film 17 that is detachably attached to the adhesive 16 and the elastic covering 12. Aluminum is preferably used as the electrode plate 15. The conductive adhesive 16 is formed in a shape along the electrode plate 15.
Note that the synthetic resin layer 14 may be provided not inside the electrode plate 15 but inside, that is, between the conductive adhesive 16. Since the synthetic resin layer 14 is thin, a current flows from the conductive adhesive 16 to the electrode plate 15. Moreover, you may cover so that the end surface of the electrode plate 15 may not be exposed with a double-sided tape etc.

  The elastic covering 12 is a foamed sheet obtained from a resin base material containing a polyurethane sheet, polyethylene, polypropylene, polyethylene vinyl acetate, or a saponified product thereof alone or as a copolymer, or a polymer mixture. Has resilience. A rectangular extending portion 20 that extends integrally in the longitudinal direction is formed at substantially the center in the left-right width direction of the elastic covering body 12.

  The electrode plate 15 is insulative at the center in the width direction, that is, divided into two parts in a non-contact manner, and is formed in a symmetrical shape. The synthetic resin layer 14 has substantially the same shape and the same area, and both are set to have a smaller area as a whole than the elastic covering body 12. As shown in FIG. 8, each electrode plate 15 has a rectangular electrode portion 21 that extends along the extended portion 20 together with the extended portion 20. Therefore, the outer side of the electrode part 21 is covered with the elastic covering body 12 (extension part 20). The electrode portion 21 may be peeled off from the synthetic resin layer 14 or may be bonded. A notch 20a is formed in the approximate center of the extension part 20 so that a partition part 50 to be described later can be inserted, and the tip part of the extension part 20 is separated left and right by the notch 20a. And the hole 20b which penetrates the electrode part 21 and the extension part 20 is each pierced in the right-and-left both sides of the notch 20a, and the cylindrical parts 37 and 38 mentioned later penetrate this hole 20b.

  The conductive adhesive 16 is formed in a rectangular shape, and any adhesive known in the art can be used. For example, it is preferable to use the following adhesive. That is, the conductive adhesive 16 made of a gel containing 18 to 30% by weight of a crosslinked synthetic polymer, 12 to 30% by weight of water, 25 to 65% of a polyhydric alcohol and 1 to 13% by weight of an electrolyte salt is used. Can do.

  Here, based on FIG. 5, the structure of the connection tool 23 for electrically connecting the electrode part 21 and the end part 22 of the cord 3 will be described. The connection tool 23 has a pair of covering pieces 24 and 25 that respectively cover the electrode portion 21 and the cord 3 that overlaps the electrode portion 21 from the outside, and is made of a synthetic resin and has excellent insulating properties. The pair of covering pieces 24 and 25 may be separate from each other or may be integrated by hinge connection or the like.

  As shown in FIG. 6, each of the covering pieces 24 and 25 includes a rectangular plate-like covering piece main body 26 and 27 in a plan view, and cord guide portions 30 and 31 protruding to one side of the covering piece main bodies 26 and 27. With. On both sides of the covering piece main bodies 26 and 27, ribs 32 and 33 are formed which abut each other and partially fit when the covering piece main bodies 26 and 27 are overlapped with each other. Is extended to the middle of the code guide portions 30 and 31 so that the lead-out path 34 of the cord 3 can be formed when the covering piece main bodies 26 and 27 are overlapped with each other.

  FIG. 7 is a schematic cross-sectional view of the electrode pieces 21, the annular portion 10, and the elastic covering body 12 sandwiched between the covering pieces 24 and 25. With reference to FIG. 5 and FIG. 6, the connection tool 23 is provided with a pair of right and left fitting portions 11 that pass through the electrode portion 21 and the elastic covering body 12 and are fitted to each other. The fitting portion 11 includes cylindrical portions 37 and 38 projecting in a columnar shape from the facing surface 35 of one covering piece 24 toward the facing surface 36 of the other covering piece 25, and the cylindrical portions 37 and 38, for example, It consists of columnar small column portions (circular cross-section) 44 and 45 fitted into holes (cross-sectional rectangles) 42 and 43 formed in the center. Further, on the facing surface 36 of the other covering piece 25, arc-shaped protruding portions 40, 41 of, for example, 270 degrees are provided so as to have open portions 46, 47 on the outer side of the small column portions 44, 45 and coaxially therewith. Projected. The arcuate protrusions 40 and 41 are located outside the cylindrical portions 37 and 38 when the pair of covering pieces 24 and 25 are overlapped. The protruding amount of the arc-shaped protruding portions 40 and 41 is smaller than that of the small column portions 44 and 45. The open portions 46 and 47 of the arcuate protrusions 40 and 41 are open toward the lead-out path 34 of the cord 3. The maximum inner diameter of the hole portions 42 and 43 is set smaller than the maximum outer diameter of the small column portions 44 and 45. Thereby, both will be fitted and it will become difficult to detach.

  The inner diameter of the annular portion 10 is set to be slightly larger than the outer diameter of the fitting portion 11, that is, the cylindrical portions 37 and 38. In addition, in one embodiment of the pair of covering pieces 24 and 25, a partition portion 50 for insulating the electrode portions 21 and the annular portions 10 of the cord 3 is provided on the facing surface 35 of the one covering piece 24. Projected. The partition 50 is formed in a straight line.

  In order to connect the one end portion 22 of the cord 3 to the pad body 6 of the electrode pad 5 having the above-described configuration, that is, the electrode portion 21, the following is performed. That is, as shown in FIG. 7, one covering piece 24 is placed on, for example, a base so that the cylindrical portions 37 and 38 face upward, and the annular portion 10 of the locking member 7 of the cord 3 is placed thereon. It is made to engage with cylindrical parts 37 and 38, respectively. At this time, since the inner diameter of the annular portion 10 is set slightly larger than the outer diameter of the cylindrical portions 37 and 38, it can be easily engaged. The code 3 is derived from the deriving path 34.

  Subsequently, the electrode portion 21 is placed on the annular portion 10 side, and the left and right holes 20b of the extending portion 20 (elastic covering piece 12) are installed while being engaged with the cylindrical portions 37 and 38, respectively. If it does so, the partition part 50 will be located in the notch 20a formed in the extension part 20, and the left and right electrode parts 21 and the annular part 10 will be insulated reliably by this partition part 50. Therefore, the protruding amount of the partition part 50 is preferably equal to or greater than the total thickness of the annular part 10 and the electrode part 21. Then, the other covering piece 25 is brought close to one covering piece 24 so that the small column portions 44 and 45 face downward, and the small column portions 44 and 45 are respectively connected to the hole portions 42 and 42 of the cylindrical portions 37 and 38. Fit to 43. At this time, the ribs 32 and 33 are joined together, so that the covering piece main bodies 26 and 27 are not shifted from each other, and the small pillar portions 44 and 45 are fitted into the hole portions 42 and 43, respectively, so that they are not separated. . In addition, in a state where the ribs 32 and 33 are joined together, the extending portion 20 is pressed in a direction in which its thickness decreases against its elasticity.

  Further, since the electrode portion 21 and the annular portion 10 of the cord 3 are sandwiched between the opposing surfaces 35 and 36 by the arcuate protruding portions 40 and 41 via the extending portion 20 which is an elastic body, the electrode portion 21. And the annular portion 10 are reliably in contact with each other. And since the extension part 20 is the state pressed against the elasticity in the direction in which the thickness reduces, with the elastic restoring force which tries to increase the thickness direction, the small column parts 44 and 45 and The fitting state with the cylindrical portions 37 and 38 is reliably maintained. As a result, the contact state between the electrode portion 21 and the annular portion 10 is maintained, and electrical contact can be ensured.

  According to the embodiment of the present invention, the electrode portion 21 and the cord 3 can be reliably brought into contact with each other by a simple operation such as overlapping the electrode portion 21 and the cord 3 and aligning the covering pieces 24 and 25. In addition, since the overlapping state between the covering pieces 24 and 25 is reliably maintained by the fitting portion 11, the contact state between the electrode portion 21 and the cord 3 can also be reliably maintained. Furthermore, since the annular portion 10 of the locking member 7 is locked to the cylindrical portions 37 and 38, the cord 3 does not come out between the covering pieces 24 and 25, and the contact state is maintained. Moreover, since the electrode portion 21 is also locked to the cylindrical portions 37 and 38 by the holes 20b, the electrode portion 21 and thus the extended portion 20 are prevented from coming off between the covering pieces 24 and 25. Further, since the left and right electrode portions 21 and the annular portion 10 are insulated from each other by the partition portion 50, it is only necessary to cover one connecting tool.

  When the electrode pad 1 of the embodiment of the present invention is used as the counter electrode plate of the electric knife 4, the film 17 is peeled off and the human body (patient H) is extended to the extension region A of the elastic covering 12, that is, the conductive adhesive 16. The outer region (which is provided with an adhesive layer) and the conductive adhesive 16 are adhered. In particular, by sticking the extension region A to the human body, it is possible to prevent the physiological saline necessary for the operation from entering the electrode plate 15 side.

  In the above embodiment, two electrode plates 15 have been described. In this case, even if the end of one cord 3 is detached from the electrode portion 21 due to an accident, the electric knife device 1 can be safely used as long as the contact between the other cord 3 and the electrode portion 21 is ensured. Can be used.

  Therefore, the predetermined area of the electrode plate 15 needs to be large enough not to damage the skin of the patient H even by the high frequency generated from the electric knife 4, and the pad main body 6 is partly from the patient H body. It must be managed so that it does not peel off and the remaining area is not heated intensively.

  In the above embodiment, the locking tool 7 connected to the tip of the cord 3 has the thin plate-like annular portion 10, but the portion connected to the electrode portion 21 is not limited to the annular shape, and is fitted. A U-shape, a U-shape, or a substantially L-shape that fits around the joint portion 11 may be used.

  Furthermore, in the said embodiment, although the fitting part was provided and it was set as the structure which this fitting part penetrates an electrode part and an elastic covering body (elastic body), it is not limited to this. In short, if the electrode portion and the cord are overlapped and pressed by interposing an elastic body and the state is held by fitting, the fitting portion penetrates the electrode portion and the elastic covering body as described above. It does not have to be a configuration.

The use condition figure of the electric knife device which shows the embodiment of the present invention. Similarly, the whole block diagram of an electrode pad. Similarly, the block diagram of the locking tool at the tip of the cord. Similarly, the schematic diagram of an electrode pad. The exploded plan view of a connection tool similarly. The disassembled side view of a connector similarly. Similarly, a schematic cross-sectional view when an electrode part, an annular part, and an elastic covering are sandwiched between covering pieces. Similarly, the principal part schematic diagram of the electrode part vicinity of an electrode pad.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electric knife apparatus, 2 ... Apparatus main body, 3 ... Cord, 4 ... Electric knife, 5 ... Electrode pad, 6 ... Pad main body, 7 ... Locking tool, 8 ... Connection part, 10 ... Ring part, 11 ... Fitting Part, 12 ... elastic covering, 15 ... electrode plate, 16 ... conductive adhesive, 17 ... film, 2020 ... extension part, 21 ... electrode part, 22 ... end part of cord, 23 ... connector, 24, 25 ... Covering piece, 26, 27 ... Covering piece main body, 30, 31 ... Cord guide part, 32, 33 ... Rib, 37, 38 ... Cylindrical part, 40, 41 ... Arc-shaped protruding part, 42, 43 ... Hole part, 44, 45 ... small column part, partition part ... 50

Claims (6)

  An electrode pad having a pad body attached to a human body as a counter electrode plate of an electric knife and having an electrode plate having a predetermined area, and a cord having one end connected to an electrode portion of the electrode plate, The connector includes a connector for connecting the cord in an overlapped state, and the connector is provided on each of the electrode portion side and the cord side to cover the electrode portion and to overlap the electrode portion and the cord via an elastic body. It has a pair of insulating pieces having insulation properties that are connected by clamping, and on the opposing surfaces of the covering pieces, there are fitting portions that are fitted to each other so as to hold the electrode portion and the cord. An electrode pad that is characterized by being made.   The electrode plate is bisected into a predetermined area in an insulated state, each electrode plate is provided with an electrode portion, and a separate cord is connected to each electrode portion via a connector. 1. The electrode pad according to 1.   3. The electrode pad according to claim 2, wherein each electrode portion and the cord connected to each electrode are connected by a single connector, and the connector has a partition portion that insulates the electrode portion and the cord from each other. .   4. The fitting part according to claim 1, wherein the fitting part is formed in a columnar shape, and a locking tool is provided at one end part of the cord for locking to the outer peripheral part of the fitting part. Electrode pads.   The electrode pad according to claim 4, wherein the locking member has an annular portion that externally fits the fitting portion.   6. The electrode pad according to claim 1, wherein the electrode plate is covered with an elastic covering, and the elastic body uses a part of the elastic covering.

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