KR102295827B1 - A Magnetic Inducting Type of a Surgical Device - Google Patents

Abstract

The present invention relates to a magnetic induction type surgical instrument. The surgical instrument includes a base electrode 11; a magnetic layer 12 formed on the base electrode 11; and a current inducing pattern layer 13 that induces a magnetic field in the magnetic layer 12 .

Description

A Magnetic Inducting Type of a Surgical Device

The present invention relates to a magnetic induction type surgical instrument, and more particularly, to a magnetic induction type surgical instrument capable of cutting by coagulating a surgical site with heat due to hysteresis resistance due to induction of a magnetic field.

In the course of surgery, the same human tissue of blood vessels needs to be cut, and after coagulation for hemostasis, a predetermined area can be cut by an appropriate cutter. For example, in the course of laparoscopic surgery, a blood vessel or a part of a human body similar thereto needs to be cut, and for this purpose, for example, a surgical tool such as an ultrasonic cutting machine or a high-frequency cutting machine may be used. For example, International Publication No. WO 2011/097469 discloses an electrosurgical device for cutting tissue by applying high-frequency energy. WO 2010/120944 also discloses a thermally adjustable surgical instrument made of an electrical conductor with a ferromagnetic coating. The magnetic induction method of inducing a magnetic field to generate heat by hysteresis loss has the advantage of fast response and high power efficiency by applying high-frequency energy directly. It is necessary to form an appropriate current induction structure for generating a magnetic field for solidification and cutting by transferring heat to human tissue by such a magnetic induction method. In addition, it is necessary to create a heat transfer structure that conducts heat in a predetermined direction by a magnetic field generated by current induction. However, the prior art does not disclose such a current induction structure and a heat transfer structure.

The present invention has the following objects to solve the problems of the prior art.

Prior art 1: WO 2010/120944 (ASCLAB AG, published on August 11, 2011) Laparoscopic high-frequency surgery device Prior art 2: WO 2010/120944 (Domain Surgical, Inc. published on October 21, 2010) Induction heated surgical instrument

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic induction type surgical instrument that induces a magnetic field generated by a current induced in a current induction pattern to a ferromagnetic cutter so that solidification and cutting are effectively performed.

According to a suitable embodiment of the present invention, a surgical instrument for cutting body tissue by generating heat includes a base electrode; a magnetic layer formed on the base electrode; and a current inducing pattern layer for inducing a magnetic field in the magnetic layer.

According to another suitable embodiment of the present invention, the current guiding pattern layer consists of a plurality of linear guiding paths arranged in parallel with each other or extending in a spiral shape.

According to another suitable embodiment of the present invention, the surgical instrument includes a base electrode coupled with a ferromagnetic layer; a current induction pattern that induces a magnetic field in the ferromagnetic layer; and a protective layer for protecting the current induction pattern.

According to another suitable embodiment of the present invention, the current inducing pattern is a printed electrode.

According to another suitable embodiment of the present invention, a surgical instrument for cutting human tissue includes a current control unit for controlling an amount of electric current; a magnetically induced current pattern for generating a magnetic field by the current induced by the current control unit; a magnetic induction heat generating unit that generates heat by a magnetic field generated by the magnetic induction current pattern; and a functional tool for coagulating and cutting human tissue with the generated heat.

According to another suitable embodiment of the invention, it comprises vibration generating means for actuating the functional tool.

According to another suitable embodiment of the present invention, a surgical instrument for cutting human tissue includes first and second sub-jaws coupled to each other so as to be engaged with each other; a cutting electrode formed in the first sub-jaw; a ferromagnetic layer formed on at least a portion of the cutting electrode; and a current patterned layer that induces a magnetic field in the ferromagnetic layer.

According to another suitable embodiment of the present invention, it further comprises a temperature detection unit and a switch operation unit that cuts off the electrical connection according to a signal transmitted from the temperature detection unit.

The magnetic induction type surgical device according to the present invention reduces the operation time by allowing the cutting tool portion for coagulation and cutting to be operated by magnetic induction. The surgical device according to the present invention forms an appropriate current induction pattern according to the surgical site so that heat is generated in the area for cutting, so that the influence of the surrounding area according to the procedure is reduced. The surgical device according to the present invention can be applied to surgery of various sites including laparoscopic surgery.

1 illustrates an embodiment of a magnetic electrode structure of a magnetic induction type surgical instrument according to the present invention.
Figure 2 shows an embodiment of a current induction pattern applied to the magnetic electrode of the surgical instrument according to the present invention.
Figure 3 shows an embodiment of the operating structure of the magnetic electrode in the surgical instrument according to the present invention.
4 shows an embodiment of a surgical instrument according to the present invention.
Figure 5 shows an embodiment of the cutting process by the surgical instrument according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so they will not be repeatedly described unless necessary for the understanding of the invention, and well-known components will be briefly described or omitted, but the present invention It should not be construed as being excluded from the embodiment of

1 illustrates an embodiment of a magnetic electrode structure of a magnetic induction type surgical instrument according to the present invention.

Referring to FIG. 1 , a surgical device for cutting body tissue by generating heat includes a base electrode 11 ; a magnetic layer 12 formed on the base electrode 11; and a current inducing pattern layer 13 that induces a magnetic field in the magnetic layer 12 .

The base electrode 11 may, for example, have a function of cutting by solidifying a cutting site by contacting a blood vessel or similar body tissue. The base electrode 11 may have various structures depending on the surgical site or the cutting site, and some may have a cutter structure. At least a portion of the base electrode 11 may be made of a material having a large heat transfer coefficient or may include a magnetic material. The base electrode 11 may be made of various structures suitable for solidification and cutting of the cut portion, and may include various materials capable of generating heat in a predetermined portion, and is not limited to the presented embodiment. A magnetic layer 12 may be formed under the base electrode 11 , and the magnetic layer 12 is, for example, iron (Fe), cobalt (Co), nickel (Ni) or iron oxide (FeO ₄ ). It may include a ferromagnetic material. The magnetic layer 12 is formed as a layer independent of the base electrode 11 . may be integrally formed. Specifically, a magnetic layer 12 made of a magnetic material having a thickness of 1 to 10,000 μm may be formed on a lower portion of the base electrode 11 . Alternatively, the magnetic layer 12 may be formed on at least a portion of the inside of the base electrode 11 . Alternatively, the magnetic layer 12 may be formed in such a way that a magnetic strip is inserted into the base electrode 11 . The magnetic layer 12 may be formed in various ways, for example, coated on the base electrode 11, printed with magnetic ink, attached in the form of a film, or formed by a method in which a magnetic strip is inserted. can The magnetic layer 12 may be formed on a part of the base electrode 11 , and may be formed based on a portion to which a body tissue to be solidified and cut is fixed. The magnetic layer 12 may be formed in a variety of ways and is not limited to the embodiments presented.

As a magnetic field is induced in the magnetic layer 12 , a hysteresis loss may occur, and the current induction pattern layer 13 may be disposed to generate heat due to an eddy current. The current induction pattern layer 13 may be formed in various ways, for example, may be formed under the magnetic layer 12 . The current induction pattern layer 13 may have a function of generating a change in a magnetic field by inducing a current in a predetermined direction, and is formed by being coupled to the base electrode 11 or the magnetic layer 12, or depending on the structure of the surgical instrument. It may be formed separately from the base electrode 11 or the magnetic layer 12 . The current induction pattern layer 13 may have a function to induce a magnetic field generated while generating a magnetic field according to the flow of current to the magnetic layer 12 . The current pattern layer 13 may be made in various shapes, such as, for example, a coil pattern, a spiral pattern, or a parallel linear pattern. When the current induction pattern layer 13 is coupled to the magnetic layer 12 , the current pattern layer 13 may be formed inside the insulating layer or may be separated from the magnetic layer 12 by the insulating layer. As shown in the plan view and cross-sectional view of FIG. 1(A), when the base electrode 11, the magnetic layer 12, and the current induction pattern layer 13 are formed in a structure coupled to each other, the current induction pattern layer 13 A protective layer 14 may be formed under the . The protective layer 14 may be made of an electromagnetic shielding material or an insulating material. Alternatively, the protective layer 14 may be made of a heat-dissipating structure or a heat-dissipating material, whereby heat generated in the current induction pattern layer 13 may be rapidly discharged to the outside. The protective layer 14 may be formed in various ways depending on the structure of the current induction pattern layer 13 and is not limited to the presented embodiment.

As shown in (B) of FIG. 1 , the magnetic layer 12a or the current induction pattern layer 13a may be formed in various shapes according to the structure of the cutting tool. For example, the cutting tool may include an induction body 15 and an electrode tip 11a protruding from the induction body 15 and having a cutting function. The electrode tip 11a as a whole may be made of a triangular pyramid having a sharp lower end or a similar structure. The magnetic layer 12a may be formed on the inside of the cutter of the sharp part corresponding to the solidification and cutting part, and the current pattern inducing layer 13a may be formed on the inside of the electrode tip 11a. A pair of inductors 16a and 16b for inducing the flow of current into the current pattern inducing layer 13a are connected to one end and the other end of the current inducing pattern layer 13a to induce a current into the current pattern inducing layer 13a. can do. The current may be, for example, an alternating current having a predetermined frequency, and electric fields in different directions may be generated in the current pattern inducing layer 13a by induction of the alternating current. In addition, as magnetic fields in different directions are induced in the magnetic layer 12a, heat according to the flow of the induced current may be generated. Then, the generated heat is transferred to the base electrode 11 or the electrode tip 11a, so that the body tissue in contact with the base electrode 11 or the electrode tip 11a is solidified and can be cut. The solidified body tissue may be cut by the base electrode 11 or the electrode tip 11a or by other suitable cutting means. The base electrode 11 or the electrode tip 11a may have various structures and is not limited to the presented embodiment.

Figure 2 shows an embodiment of a current induction pattern applied to the magnetic electrode of the surgical instrument according to the present invention.

Referring to FIG. 2 , the current induction pattern layer 13 may be disposed in parallel with each other or may include a plurality of linear induction paths extending in a spiral shape. The current induction pattern layer 13 may include a base layer 21 made of an insulator material and induction patterns 22a and 22b formed on the base layer 21 . The base layer 21 may have a plate shape, and may be made in the form of a thin film or in a form having a predetermined thickness. When the base layer 21 is made in the form of a thin film, the induction patterns 22a and 22b may be formed on one or both surfaces, and the induction patterns 22a and 22b have a plurality of induction paths through which current flows in the same direction. (22_1 to 22_N) may be included. The induction paths 22_1 to 22_N may be formed by printing with conductive ink or by bonding conductive films having a plurality of conductive paths. Both ends of the plurality of induction paths 22_1 to 22_N arranged in parallel to each other may be connected to each other by connection paths 221a and 221b, and guide tabs 23a and 23b are provided in the respective connection paths 221a and 221b. can be connected The induction tabs 23a and 23b may be connected to the current control module to induce a current in the induction patterns 22a and 22b to generate a magnetic field. The induction paths 22_1 to 22_N may have a structure extending in the width direction of the base layer 21 or may have a structure extending in the length direction of the base layer 21 , and may be formed at various positions of the base layer 21 . Referring to the lower part of FIG. 2 , the induction pattern 22 may be formed above the base layer 21 , and the magnetic layer 12 may be coupled to the upper portion of the induction pattern 22 . A protective layer 25 may be formed under the base 21 , and the magnetic induction module thus formed may be coupled to the base and the electrode described above. Optionally, the base layer 21 may have a plate shape having a thickness, and the interior may be an empty space or may be filled with a ferrite material having high magnetic permeability. When made in a plate shape having a thickness of the base layer 21 , the induction paths 22_1 to 22_N may have a coil shape with one end connected to each other and may be made in a shape surrounding the base layer 21 . In this case, the induction patterns 22a and 22b may extend in a spiral shape. The induction patterns 22a and 22b may be formed in various structures and are not limited to the presented embodiment.

Figure 3 shows an embodiment of the operating structure of the magnetic electrode in the surgical instrument according to the present invention.

Referring to FIG. 3 , a surgical instrument for cutting human tissue includes a current control unit 32 for controlling an amount of current; a magnetic induction current pattern 33 for generating a magnetic field by the current induced by the current control unit 32; a magnetic induction heat generating unit 34 for generating heat by the magnetic field generated by the magnetic induction current pattern 33; and a functional tool 35 for coagulating and cutting human tissue with the generated heat.

The overall operation of the surgical instrument may be controlled by the control module 31 , for example, the operation of the current control unit 32 may be controlled. The current control unit 32 may have a function of adjusting the amount of current flowing into the current induction pattern and the period or time of the alternating current. By the current control unit 32, a current can be induced into the magnetically induced current pattern unit 33, the magnetically induced current pattern unit 33 includes a current inducing pattern and has a function of inducing a magnetic field into the magnetic layer. can The self-induced current pattern unit 33 may have a function of detecting an internal temperature according to the flow of the current while detecting the amount of current flowing in the current induction pattern. The magnetic induction heat generating unit 34 may have a function of detecting heat generated by the induced current induced in the magnetic layer by the magnetic induction current pattern unit 33 . The magnetic induction heat generating unit 34 may detect the flow of current induced in the magnetic layer, and may detect the direction of heat transfer therewith. It is also possible to detect whether the temperature of the magnetic layer or the functional tool 35 is outside a predetermined temperature range while detecting the temperature of the magnetic layer or the functional layer by detecting the temperature of the magnetic layer and the functional tool 35 . The magnetic induction heat generating unit 34 can detect and monitor various heat generating effects according to the induction and flow of electric current, and is not limited to the presented embodiment. Heat generated in the magnetic layer may be transferred to the functional tool 35 , and the functional tool 35 may have a function of fixing body tissues to be cut, such as blood vessels, and coagulating it to make it machinable. The functional tool 35 may be actuated by an actuating means 36 , which may have a function of regulating the actuation of the functional tool 35 . The functional tool 35 may have a structure in which the coagulated body tissue is cut together with coagulation, or may have a structure in which the cutter moves and cuts in a solidified state in a fixed state. The actuating means 36 may include a driving means such as a motor that applies vibration for cutting the solidified body tissue or moves the cutter. The actuating means 36 may include various additional means to enable efficient cutting and is not limited to the embodiment presented. The functional tool 35 may have a jaw or clamp structure that may engage one another.

4 shows an embodiment of a surgical instrument according to the present invention.

Referring to FIG. 4 , the surgical instrument 40 for cutting human tissue includes first and second sub-jaws 42 and 43 coupled to each other to be engaged with each other; a cutting electrode 422 formed in the first sub-jaw 42; a ferromagnetic layer 423 formed on at least a portion of the cutting electrode 422 ; and a current pattern layer 424 that induces a magnetic field in the ferromagnetic layer 423 . The surgical instrument 40 may include an induction module 41 and a jaw module 42 , and the induction module 41 may be connected to an operation module (not shown) for operation of the jaw module 42 . The actuation module may actuate the jaw module 42 via the induction module 41 , for example actuate the jaw module. The first and second sub jaws 42 and 43 may have a structure that can be engaged with each other, for example, one end of the first sub jaw 42 with respect to the first sub jaw 42 maintained in a fixed state. The second sub-jaw 43 coupled to the can be rotatably coupled to the first and second sub-jaws 42 and 43 to be engaged with each other. Connectors 413 and 414 may be coupled to one end of the first and second sub-jaws 42 and 43 , respectively, and the respective connectors 413 and 414 may be connected to the operation member 412 . The operation member 412 may be disposed inside the guide tube 411 extending in a cylindrical shape. A wiring unit 415 may be disposed inside the induction tube 411 , and current may be supplied to the current induction pattern layer 424 through the wiring unit 415 . The first and second sub-joints (42, 43) may consist of first and second sets of bodies (421, 422) and first and second engaging units (422, 432), respectively, and the first and second sets of bodies (421, 421) 422) may be engaged with each other to fix the body tissue. A current pattern layer 424 may be disposed on the Article 1 body 421 , and a ferromagnetic layer 423 may be disposed on the current pattern layer 424 . The ferromagnetic layer 423 may be disposed below the first engagement unit 422 , and the ferromagnetic layer 423 may be disposed based on a position at which a body tissue is fixed. The first and second sub-jaws 42 and 43 may be opened to fix the body tissue, and the body tissue may be fixed to the region where the ferromagnetic layer 423 of the first engagement unit 422 is disposed. When the first and second sub jaws 42 and 43 are engaged with each other by the operation of the operation module, the body tissue may be fixed to the jaw module. A current may then be induced into the current pattern layer 424 to operate the crude module.

Figure 5 shows an embodiment of the cutting process by the surgical instrument according to the present invention.

Referring to FIG. 5 , the crude module may be operated by the trigger unit 51 installed in the operation module, and the power setting unit 52 and the temperature setting unit 53 may be operated before the operation of the crude module is started. have. The current delivered to the current induction pattern layer may be set by the power setting unit 52 , and the temperature of the bath module may be set by the temperature setting unit 53 . When the power and temperature are set in this way, the tank module may be operated by the tank operation unit 54 . A contact connection unit 55 and a switch operation unit 56 may be installed in the jaw module, and the contact connection unit 55 electrically connects the wiring for power supply and the current induction pattern layer when the first and second sub-groups are engaged with each other. make it connect And when the first and second sub-jaws are opened, the contact connection unit 55 is opened, whereby the electrical connection may be cut off. The switch operation unit 56 may function as a switch to detect an operation to the contact connection unit 55 and supply a current in a current induction pattern. In addition, it may have a function of detecting the connection by the contact connection unit 55 and stopping the supply of current to the current pattern layer. The temperature of the jaw module may be detected by the temperature detection unit 57 , and when a predetermined temperature is reached, a cutting signal may be transmitted to the cutting unit 58 . The temperature detection unit 58 may adjust the operation of the switch operation unit 56 to stop the current supply when it does not reach a preset temperature range or is out of the temperature range, and transmits it to the control module 31 . In addition, when the cutting process is completed by the operation of the cutting unit 58 , the trigger unit 51 may be operated by the control module 31 to open the jaw module. The surgical instrument can be operated in a variety of ways and is not limited to the embodiments presented.

The magnetic induction type surgical device according to the present invention reduces the operation time by allowing the cutting tool portion for coagulation and cutting to be operated by magnetic induction. The surgical device according to the present invention forms an appropriate current induction pattern according to the surgical site so that heat is generated in the area for cutting, so that the influence of the surrounding area according to the procedure is reduced. The surgical device according to the present invention can be applied to surgery of various sites including laparoscopic surgery.

Although the present invention has been described in detail with reference to the presented embodiments, those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such variations and modifications, but only by the claims appended hereto.

11: base electrode 12: magnetic layer
13: current induction pattern layer 16a, 16b: derivative
21: base layer 22a, 22b: induction pattern
23a, 23b: induction pattern 31: control module
32: current control unit 33: current pattern
34: heat generating unit 35: function tool
40: surgical instrument 42, 43: sub jaw

Claims (8)

In a surgical device for cutting body tissue by generating heat,
base electrode 11;
a magnetic layer 12 formed on the base electrode 11; and
a current inducing pattern layer (13) for inducing a magnetic field in the magnetic layer (12);
The current induction pattern layer 13 includes a plurality of induction paths 22_1 to 22_N formed on the plate-shaped base layer 21 and the base layer 21 of an insulator material and arranged parallel to each other or extending in a spiral shape. Magnetic induction type surgical instrument comprising a guide pattern (22a, 22b). delete In the surgical device,
a base electrode 11 to which the ferromagnetic layer 12 is coupled;
a current inducing pattern layer 13 for inducing a magnetic field in the ferromagnetic layer 12; and
a protective layer (14) for protection of the current induction pattern layer (13);
The current induction pattern layer 13 includes a plurality of induction paths 22_1 to 22_N formed on the plate-shaped base layer 21 and the base layer 21 of an insulator material and arranged parallel to each other or extending in a spiral shape. Magnetic induction type surgical instrument comprising a guide pattern (22a, 22b). The magnetic induction type surgical instrument according to claim 3, wherein the current induction pattern layer (13) is a printed electrode. delete delete A surgical device for cutting human tissue, comprising:
First and second sub-jaws 42 and 43 coupled to each other to enable engagement;
a cutting electrode 422 formed in the first sub-jaw 42;
a ferromagnetic layer 423 formed on at least a portion of the cutting electrode 422 ; and
a current pattern layer (424) that induces a magnetic field in the ferromagnetic layer (423);
A current is supplied to the current pattern layer 424 through the wiring unit 415 disposed inside the induction tube 411 in which the actuating member 412 connected to the first and second sub-jaws 42 and 43 is disposed, and , Surgical instrument for cutting, characterized in that the ferromagnetic layer (423) is disposed above the current pattern layer (424). The surgical instrument for cutting according to claim 7, further comprising a temperature detecting unit (57) and a switch operating unit (56) for disconnecting the electrical connection according to a signal transmitted from the temperature detecting unit (55).

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