WO2022250191A1

WO2022250191A1 - Medical resection device

Info

Publication number: WO2022250191A1
Application number: PCT/KR2021/007008
Authority: WO
Inventors: 고영웅; 정재혁; 신명영; 윤섭; 문웅진; 민병훈
Original assignee: 유앤아이 주식회사
Priority date: 2021-05-25
Filing date: 2021-06-04
Publication date: 2022-12-01
Also published as: KR102648069B1; KR20220159508A

Abstract

A medical resection device according to an aspect of the technical idea of the present invention comprises: a first electrode portion extending in a first direction and having a hollow shape in which at least a part thereof has a first through-hole therein; a second electrode portion having a hollow shape in which at least a part thereof has second through-hole such that at least a part of the first electrode portion is positioned therein; a first insulating portion positioned between the first and second electrode portions so as to insulate between the first and second electrode portions; a second insulating portion disposed such that at least a part thereof covers a part of the first electrode portion, a part of the second insulating portion being exposed to the outside, and the second insulating portion having a first open portion that is open towards a direction different from the first direction; a third insulating portion covering at least a part of the second electrode portion such that a part of the second electrode portion is exposed to the outside; and a polishing/cutting portion positioned inside the first-through hole, the polishing/cutting portion having a polishing/cutting area formed in an area adjacent to the second insulating portion, and being rotatable.

Description

medical ablation device

The present invention relates to a medical ablation device.

Arthroscope treatment is a method of surgery by making 2 to 4 small incisions less than about 1 cm in the joint, inserting a small camera and surgical instruments, and looking inside the joint through the camera. It can be considered in many lesions such as cartilage damage, and as arthroscopy technology develops, the scope of application is increasing for various diseases of the knee joint.

In addition, for surgical treatment of various diseases that can occur inside the human body, laparoscopic surgery is a technology that operates only with a small hole-sized incision without making a large incision in the abdomen, etc. is being applied

Medical resection to remove parts of the body, such as tissues and bones in the opening, in the course of treatment through arthroscopy or laparoscopy, which involves making minimal incisions in the body, or through natural openings in the body, such as the nostrils. instrument is being used. As such a medical cutting device, a shaver device is usually used, and the shaver device provides high-speed cutting of tissues and the like.

In this way, when tissue is resected through the shaver device, bleeding may occur during the surgical procedure, and therefore, hemostasis must be performed. For hemostasis, an electric cautery device that cauterizes by applying an electrical signal to the electrode can be used. To use the electric cautery device, the shaver device must be removed and the electric cautery device inserted. You have to go through the process of removing the inserted electric cautery device and reinserting the shaver device. In this way, if the operation of repeatedly inserting and removing the electric cautery device and the shaver device is performed, there is a problem that the operation time is prolonged due to tool replacement and there is a risk of infection during the replacement process.

The technical problem to be achieved by the technical idea of the present invention is to provide an abrasive cutting function such as a shaver, a burr, and a cautery or coagulation function in one instrument, thereby reducing the operation time, reducing the hassle of replacing tools, It is to provide a medical ablation device that prevents the risk of infection.

A medical ablation apparatus according to one aspect according to the technical idea of the present invention includes a first electrode part extending in a first direction, at least a part of which has a hollow shape having a first through hole therein, and at least the first electrode part therein. A second electrode part having a hollow shape, at least a part of which has a second through hole so that a part thereof is located, is positioned between the first electrode part and the second electrode part, and insulates between the first electrode part and the second electrode part. A second insulating part having a first open part, at least a part of which is disposed to cover a part of the first electrode part, a part of which is exposed to the outside, and is open toward a direction different from the first direction; A third insulating portion covering at least a portion of the second electrode portion so that a portion of the second electrode portion is exposed to the outside, and a polishing cutting region located inside the first through hole and adjacent to the second insulating portion, It may include a rotatable abrasive cutting unit.

According to an exemplary embodiment, when an electric signal is applied to the first electrode part or the second electrode part, a region of the first electrode part exposed to the outside and not covered by the second insulating part and the third insulating part Tissues are coagulated or ablated by the region of the second electrode part exposed to the outside and not covered by the part, and when the abrasive cutting part is rotated, tissue or bone is ground or cut by the abrasive cutting area. It can be.

According to an exemplary embodiment, one side of both sides of the second insulating portion along the first direction may cover the first electrode portion, and a first suction hole may be formed on the other side.

According to an exemplary embodiment, the first electrode unit, at least a portion of which is located inside the second through-hole, has the first through-hole therein, and is not exposed to the outside by the second insulating portion. A first electrode exposed portion located on the outer surface of the second insulating portion and exposed to the outside, and electrically connecting the first electrode main body and the first electrode exposed portion, wherein at least a portion of the second insulating portion is exposed. It may include a first electrode connection portion that is not exposed to the outside by the.

According to an exemplary embodiment, at least a portion of the second insulating portion is positioned on the outer surface of the first electrode body so that the first electrode body is not exposed to the outside, but the first electrode connection portion is on at least a portion of the outer surface. A seat portion is formed to be positioned, and the second insulating body portion on the outer surface of which the first electrode exposed portion is located is coupled to the second insulating body portion so that at least a portion of the first electrode connection portion is not exposed to the outside, and at least a portion thereof Is positioned between the second electrode portion and the first electrode body portion may include a second insulating cover portion to insulate between the second electrode portion and the first electrode body portion.

According to an exemplary embodiment, the first insulating part may include a 1-1 insulating part located on at least a part of the outer surface of the first electrode part, and a 1-2 insulating part located on at least a part of the outer surface of the 1-1 insulating part. A portion between the first electrode portion and the second electrode portion includes a first region and a second region, wherein the first region includes the 1-1 insulating portion and the second electrode portion on the 1-1 insulating portion. Insulated by a second insulating cover part, the second region may be insulated by the 1-1 insulating part and the 1-2 insulating part on the 1-1 insulating part.

According to an exemplary embodiment, a first blade region is formed in the first open portion of the second insulating portion, and when the abrasive cutting portion is rotated, tissue or bone is polished or polished by the abrasive cutting region and the first blade region. can be cut

According to an exemplary embodiment, the abrasive cutting unit includes a second open portion opened in a direction different from the first direction, and the abrasive cutting region is formed in the second open portion to polish or cut the tissue. It may be a second blade region.

According to an exemplary embodiment, at least a portion of the abrasive cutting portion may have a hollow shape having a third through hole used as a suction passage for suction therein.

According to an exemplary embodiment, a second suction hole is formed in a direction opposite to the first open part of the second insulating part, and a third suction hole is formed in a position corresponding to the second suction hole in the first electrode part. The suction target may be suctioned through the suction passage by sequentially passing through the third suction hole, the second suction hole, and the second open part or a fourth suction hole formed in the opposite direction of the second open part.

According to an exemplary embodiment, the abrasive cutting unit may be a burr for grinding or cutting the bone.

According to an exemplary embodiment, the first electrode part may have a third open part opened toward the same direction as the first open part.

According to an exemplary embodiment, a third blade region is formed in the third open portion, and when the abrasive cutting portion is rotated, tissue or bone may be polished or cut by the abrasive cutting region and the third blade region.

According to an exemplary embodiment, the second electrode unit may include an exposed portion located on an outer surface of the second insulating portion and exposed to the outside, and a body portion at least partially covered by the third insulating portion and coupled to the exposed portion. can

Features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor should properly define the concept of the term in order to explain his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be.

A medical ablation device according to embodiments according to the technical concept of the present invention provides an abrasive cutting function and a cauterization or coagulation function in one device, thereby reducing operation time and reducing the burden of patients and users according to medical practice and device replacement. You can reduce your risk of infection.

In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.

1 is a diagram schematically showing a medical device system including a medical ablation device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the medical ablation apparatus shown in FIG. 1;

FIG. 3 is a cross-sectional view showing the medical ablation apparatus shown in FIG. 2 .

FIG. 4 is an exploded perspective view showing some components of the medical ablation apparatus shown in FIG. 1 by disassembling them.

5 is a perspective view showing an abrasive cutting part of the medical ablation apparatus shown in FIG. 1;

6 and 7 are cross-sectional views for explaining the operation of the abrasive cutting unit of the medical ablation apparatus shown in FIG. 1 .

8 is a perspective view showing an abrasive cutting part of a medical ablation device according to another embodiment of the present invention.

9 is a perspective view showing a medical ablation device according to another embodiment of the present invention.

FIG. 10 is a cross-sectional view showing the medical ablation apparatus shown in FIG. 9 .

FIG. 11 is an exploded perspective view showing some components of the medical ablation apparatus shown in FIG. 9 in an exploded manner.

Objects, certain advantages and novel features of the present invention will become more apparent from the following detailed description and examples taken in conjunction with the accompanying drawings. In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible, even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. In addition, in this specification, when a component is described as "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but each component It should be understood that another component may be “connected”, “coupled” or “connected” between elements. In the case of "connected", "coupled" or "connected", it is understood that not only physically "connected", "coupled" or "connected", but also electrically "connected", "coupled" or "connected" as necessary. It can be.

Terms such as "~unit (unit)", "~group", "~character", and "~module" described in this specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware. And it can be implemented as a combination of software. In addition, terms such as "comprise", "comprise" or "having" described in this specification mean that the corresponding component may be inherent unless otherwise stated, excluding other components. It should be construed as being able to further include other components.

In addition, it is intended to make it clear that the classification of components in this specification is merely a classification for each main function in charge of each component. That is, two or more components to be described below may be combined into one component, or one component may be divided into two or more for each more subdivided function. In addition, each component to be described below may additionally perform some or all of the functions of other components in addition to its main function, and some of the main functions of each component may be performed by other components. Of course, it may be dedicated and performed by .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically showing a medical device system including a medical ablation device 100a according to an embodiment of the present invention. With reference to this, a medical device system including the medical ablation device 100a according to the present embodiment will be described.

As shown in FIG. 1 , the medical device system according to the present embodiment may include a medical ablation device 100a, a hand piece 200, a control unit 300, and a suction unit 400. Here, the medical ablation device 100a according to the present embodiment may be mounted at the end of the handpiece 200, and a driving unit such as a motor is mounted on the handpiece 200 to cut the abrasive cutting portion of the medical ablation device 100a ( ; shown in Figure 2) can be rotated. Accordingly, while the abrasive cutting part 180a of the medical resection instrument 100a is rotated, tissues or bones may be ground or cut. The handpiece 200 can be controlled by the control unit 300 and is connected to the suction unit 400 so as to suction blood, tissue or bone through the medical ablation device 100a. The handpiece 200 may be connected through a power source and transmits an electrical signal to the medical ablation device 100a under the control of the control unit 300 so that the medical ablation device 100a coagulates or cauterizes tissue. ) can be made.

FIG. 2 is a perspective view showing the medical ablation device 100a shown in FIG. 1 , and FIG. 3 is a cross-sectional view showing the medical ablation device 100a shown in FIG. 2 . Hereinafter, with reference to this, the medical ablation device 100a according to the present embodiment will be described.

As shown in FIGS. 2 and 3, the medical ablation apparatus 100a according to the present embodiment includes a first electrode portion 110a at least partially hollow, and at least a portion of the first electrode portion 110a therein. The hollow second electrode portion 120a to be positioned, the first insulating portion 130a insulating between the first electrode portion 110a and the second electrode portion 120a, and at least a portion of the first electrode portion 110a. The second insulating portion 140a covering the , the third insulating portion 170a covering at least a portion of the second electrode portion 120a, and at least a portion thereof are located inside the hollow of the first electrode portion 110a and are rotatable. It may include an abrasive cutting part (180a) implemented in such a way.

FIG. 4 is an exploded perspective view showing some components of the medical ablation device 100a shown in FIG. 1 in an exploded manner. Hereinafter, referring to FIGS. 2 to 4 , the first electrode part 110a, the second electrode part 120a, the first insulating part 130a, and the third insulating part of the medical ablation device 100a according to the present embodiment Let's take a look at (170a).

The first electrode unit 110a is a member that coagulates or cauterizes tissue when an electric signal is applied together with the second electrode unit 120a, and may extend along a first direction, that is, a longitudinal direction. Here, the first electrode unit 110a may be made of, for example, a metal such as stainless steel, tungsten or a tungsten alloy, molybdenum or a molybdenum alloy, titanium or a titanium alloy, etc. to receive an electrical signal, and at least a part thereof It may be implemented in a hollow shape having a first through hole 111 .

Illustratively, the first electrode part 110a may include a first electrode body part 112 , a first electrode exposed part 113 , and a first electrode connection part 114 . Here, the first electrode body portion 112 may be implemented in a hollow shape having a first through hole 111 therein, and at least a portion of the second through hole 121 of the second electrode portion 120a is formed. can be located in In addition, at least a portion of the first electrode body portion 112 may be covered by a first insulating portion 130a to be described later, and the remaining portion may be covered by a second insulating portion 140a to be described later. It may be covered by the body part 150 . Accordingly, the first electrode main body 112 may not be exposed to the outside in a finished product state as shown in FIG. 1 .

In addition, the first electrode exposed portion 113 may be located on the outer surface of the second insulating body portion 150 of the second insulating portion 140a, and is implemented in a plate shape to be exposed to the outside in a finished product state as shown in FIG. can Accordingly, the first electrode exposed portion 113 may be in contact with the tissue and may be used as a part for applying an electrical signal to the tissue. In addition, a third suction hole 115 may be formed in the first electrode exposed portion 113 to provide an inlet through which blood, tissue, or bone is suctioned.

As such, the first electrode main body 112 is not exposed to the outside and the first electrode exposed portion 113 is exposed to the outside, so that there is a gap between the first electrode main body 112 and the first electrode exposed portion 113. An electrically connecting part is required, and the first electrode connecting part 114 can perform this role. The first electrode connection unit 114 may have a bent wire shape, for example, in the shape of a letter "a", and may be implemented in two or more to improve electrical stability. Among both ends of the first electrode connection part 114, the first connection end 116 is in contact with the first electrode main body 112 and the second connection end 117 is in contact with the first electrode exposed part 113, It is possible to electrically connect between the first electrode connection part 114 and the first electrode main body part 112 . At this time, in order to improve electrical stability, the first connection end 116 may be in surface contact or line contact with the first electrode body 112, and the second connection end 117 is the other side of the first electrode connection part 114. It may be implemented in a spherical shape having a larger diameter than the part. The other part of the first electrode connection part 114, except for the second connection end 117, is inserted into the connection hole 113a penetrating the first electrode exposed part 113, and has a diameter greater than the diameter of the connection hole 113a. The large second connection end 117 does not pass through and can be electrically connected to the first electrode exposed portion 113 in contact with it.

Except for the second connection end 117, the first electrode connection portion 114 is not exposed to the outside in the finished product state as shown in FIG. 1, which may be because it is covered by the second insulation portion 140a. Specifically, the first connection end 116 part of the first electrode connection part 114 is connected to the first connection end 116 and the second connection end 116 by the second insulating cover part 160 of the second insulation part 140a. The remaining portion except for the end 117 may be covered by the second insulating body portion 150 of the second insulating portion 140a, and thus the remaining portion except for the second connection end 117 will not be exposed to the outside. can In addition, the first electrode connection portion 114 may be connected to the first electrode body portion 112 and the first electrode exposed portion 113 through a combination such as welding, soldering, bonding, or a separate process (welding, etc.) The second insulation body portion 150 of the second insulation portion 140a and the second insulation cover portion 160 may be connected through pressure by coupling without passing through the second insulation portion 140a.

On the other hand, the second electrode unit 120a is a member that coagulates or cauterizes tissue when an electric signal is applied together with the first electrode unit 110a, and like the first electrode unit 110a, the second electrode unit 110a moves in the first direction, that is, the longitudinal direction. It may extend along the surface and may be made of, for example, stainless steel, tungsten or a tungsten alloy, molybdenum or a molybdenum alloy, titanium or a titanium alloy, and the like so as to receive or transmit an electrical signal. At this time, the first electrode part 110a can function as an active electrode and the second electrode part 120a can function as a passive electrode. Conversely, the first electrode part 110a can function as a passive electrode. , it may be possible for the second electrode unit 120a to function as an active electrode. In this way, in order for the first electrode portion 110a and the second electrode portion 120a to coagulate or cauterize human tissue by receiving an electrical signal, at least a portion of the first electrode portion 110a must be exposed to the outside. In the case of , the second connection end 117 of the first electrode exposed portion 113 and the first electrode connection portion 114 is not covered by the third insulating portion 170a in the case of the second electrode portion 120a. The phosphorus exposure area 122 may be a portion exposed to the outside.

The second electrode part 120a may be implemented in a hollow shape having a second through hole 121 therein. In the second through hole 121, at least a part of the first electrode part 110a, more specifically, At least a portion of the first electrode body portion 112 of the first electrode portion 110a may be located. At this time, it is necessary to insulate the first electrode part 110a and the second electrode part 120a from each other, and this insulation may be performed by the first insulation part 130a. Specifically, the first insulating portion 130a may be positioned inside the second through hole 121 of the second electrode portion 120a and implemented in a hollow shape having the first insulating through hole 131 therein. At least a portion of the first electrode portion 110a may be positioned inside the first insulating through hole 131 so that the first insulating portion 130a is positioned between the second electrode portion 120a.

The first insulating part 130a may include, for example, a double structure of a 1-1 insulating part 132 and a 1-2 insulating part 133 . Specifically, the 1-1 insulation part 132 is located on at least a part of the outer surface of the first electrode part 110a, and the 1-2 insulation part 133 is located on at least a part of the outer surface of the 1-1 insulation part 132. It may have a structure that is positioned. At this time, the 1-1 insulation part 132 may be made of PTFE (Polytetrafluoroethylene) and implemented thinly, and the 1-2 insulation part 133 is made of FEP (Fluorinated Ethylene Propylene copolymer) for more reliable insulation. -1 It can be implemented thicker than the insulating part 132 . However, the first insulating portion 130a is not limited to these materials, and may include PTFE, FEP, PFA (Poly Fluoro Alkoxy), PEEK (Poly Ether Ether Ketone), PVDF (Polyvinylidene fluoride), PET (Poly Ethylene Terephthalate), etc. Any material capable of insulating may be implemented in various ways. Accordingly, when the area between the first electrode part 110a and the second electrode part 120a is divided into the first area 134 and the second area 135, the first area 134 is the 1-1 insulating part ( 132) and the second insulating cover part 160 of the second insulating part 140a on the 1-1 insulating part 132, the second region 135 is formed by the 1-1 insulating part 132 It can be seen as being insulated by the 1-2 insulating part 133 on the 1-1 insulating part 132, and the thickness of the 1-2 insulating part 133 is the second insulating cover part interposed therebetween. It is implemented to be the same as the thickness of (160) to increase structural completeness. In this way, since the first region 134 can be insulated by the 1-2 insulating portion 133 and the second insulating cover portion 160, the 1-1 insulating portion 132 does not necessarily need to be included. can However, when the 1-1 insulation part 132 is provided, it is possible to prevent damage to the medical ablation device 100a due to fluid from the human body passing through the space between parts.

The second insulating portion 140a is a member that performs an ablation function together with the abrasive cutting portion 180a while performing an insulating role. Here, the second insulating portion 140a may structurally include a second insulating body portion 150 and a second insulating cover portion 160 .

The second insulating body 150 may provide an area where the first electrode unit 110a is located, and the area A 151 is the outer surface of the first electrode body 112 of the first electrode unit 110a. It is possible to cover a part of the first electrode body 112 together with the second insulating cover 160 so that it is not exposed to the outside. is formed to allow the first electrode connecting portion 114 of the first electrode portion 110a to be seated on the seating portion 154, and the first electrode exposed portion ( 113) may be provided with a space located on the outer surface. At this time, the seating portion 154 may be extended and formed in the C region 153, and the first electrode connection portion 114, which is relatively weak against external impact, may be safely protected by the seating portion 154. In addition, a second suction hole 156 may be formed in region C 153 of the second insulating body 150 at a position corresponding to the third suction hole 115 of the first electrode part 110a, This allows blood, tissue or bone to be suctioned out. In addition, a first suction hole 155 may be additionally formed at the end of the C region 153 of the second insulating body 150, and blood, tissue, or bone may be suctioned through the first suction hole 155. This can improve the suction efficiency.

Meanwhile, a first open portion 157 may be formed in a direction opposite to the second suction hole 156 of the second insulating body portion 150 . The first open portion 157 may have a shape opened toward a direction different from the first direction in which the second electrode portion 120a extends, and more particularly, toward a second direction perpendicular to the first direction. A first blade region 158 may be formed in the first open portion 157, and the first blade region 158 may cut tissue according to interaction with the abrasive cutting portion 180a to be described later. have. In addition, the first open portion 157 and the first suction hole 155 may have shapes connected to each other, and blood, some tissues or bones may be suctioned through the first open portion 157 to improve efficiency. can

The second insulating cover part 160 is a member that covers the first electrode connection part 114 located on the seating part 154 of the second insulating body part 150 so that it is not exposed to the outside. Since the first electrode connection portion 114 may be implemented as a wire, it may be vulnerable to external impact, and when exposed to the outside, electrical signals may flow to the outside through tissue or the like and may be damaged. Therefore, it is necessary to cover the first electrode connection portion 114 so as not to be exposed to the outside. ) can be covered.

At this time, the second insulating cover part 160 covers the D area 161 that covers the first electrode connection part 114 and the E area 162 that covers a part of the first electrode body part 112. can include The E region 162 is implemented in a hollow shape and may be positioned so as to be in close contact with a portion of the outer surface of the first electrode body 112 where only the 1-1 insulation part 132 is covered, and thus the 1-1 insulation part The first region 134 of the first electrode portion 110a and the second electrode portion 120a may be insulated from each other through 132 and the E region 162 of the second insulating cover portion 160 . In addition, the D region 161 covers the first electrode connection part 114 seated on the seating part 154 and is in close contact with the second insulating body part 150, and is a part of B of the second insulating body part 150. The end of region D 161 adheres to the first stepped portion 159 between region 152 and region C 153, and region B to the second stepped portion 163 formed inside D region 161. As the ends of the 152 come into close contact, the second insulating body 150 and the second insulating cover 160 may be coupled. At this time, the second insulating body portion 150 and the second insulating cover portion 160 may be coupled in various ways, such as through mechanical coupling using protrusions, grooves, or the like, or through bonding.

Meanwhile, the second insulating portion 140a may be made of a ceramic having high mechanical strength, such as alumina (Al ₂ O ₃ ) or zirconia (ZrO ₂ ). The second insulating portion 140a is a portion in direct contact with tissue or bone and should have high mechanical strength, but should cover and insulate the rest except for a part of the first electrode portion 110a, so ceramic may be the most desirable material. .

As described above, in the medical resection device 100a according to the present embodiment, electrical stability can be improved by implementing a part directly contacting tissue in the surgical site with the second insulating part 140a made of an insulating material rather than metal. Specifically, when most of the portion directly contacting the surgical site is made of metal, electrical signals are not concentrated, so tissue coagulation or cauterization is not smoothly performed, and problems such as undesirable short circuiting may occur. However, in the medical ablation apparatus 100a according to the present embodiment, most of the portion directly contacting the surgical site is composed of the second insulating portion 140a, so that the electrical signal is exposed to the first electrode of the first electrode portion 110a. The portion 113 and the exposure area 122 of the second electrode portion 120a may be concentrated so that tissue coagulation or cauterization can be smoothly performed.

Meanwhile, the third insulating portion 170a covers at least a portion of the second electrode portion 120a to insulate the medical ablation device 100a from the outside. Here, the third insulating portion 170a may be implemented in a hollow shape having a third insulating through hole 171 therein, and the second electrode portion 120a is positioned inside the third insulating through hole 171. As much as possible, the second electrode portion 120a may be covered. At this time, the third insulating portion 170a is a portion that becomes the exterior of the medical resection device 100a and may be formed of FEP (Fluorinated ethylene propylene copolymer) to be relatively thick to perform stable insulation. However, the third insulator 170a is not limited to these materials, and may include PTFE, FEP, PFA (Poly Fluoro Alkoxy), PEEK (Poly Ether Ether Ketone), PVDF (Polyvinylidene fluoride), PET (Poly Ethylene Terephthalate), etc. Any material capable of insulating may be implemented in various ways. In addition, since at least a portion of the second electrode portion 120a must be exposed to the outside to coagulate or cauterize the tissue through an electrical signal, the exposed area 122 of the second electrode portion 120a is the third insulating portion 170a. ) may not be covered by

5 is a perspective view showing the abrasive cutting part 180a of the medical ablation instrument 100a shown in FIG. 1, and FIGS. 6 and 7 are the abrasive cutting part 180a of the medical ablation instrument 100a shown in FIG. It is a cross-sectional view to explain the operation. Hereinafter, a polishing cutting part 180a according to the present embodiment will be described with reference to FIGS. 2 to 7 .

The abrasive cutting part 180a is a member for grinding or cutting tissue or bone, and is located inside the first through hole 111 of the first electrode part 110a and has the internal configuration of the handpiece 200 described in FIG. It can be connected and rotatably implemented. An abrasive cutting area for grinding or cutting tissue or bone may be formed in the abrasive cutting portion 180a.

The abrasive cutting part 180a of the medical cutting instrument 100a according to the present embodiment is a shaver for cutting tissue, and the abrasive cutting area may be implemented as the second blade area 181. Specifically, the abrasive cutting part 180a may have a second open part 182 opened in a second direction that is different from the first direction, which is the extension direction of the first electrode part 110a. A second blade region 181 may be formed in the open portion 182 . In addition, at least a portion of the polishing cutting part 180a may be implemented in a hollow shape having a third through hole 183 therein, and the third through hole 183 of the polishing cutting part 180a is shown in FIG. It is connected to the suction unit 400 through one handpiece 200 and can be used as a suction passage. However, the abrasive cutting portion 180a is not necessarily implemented in a hollow shape, and when the abrasive cutting portion 180a is not implemented in a hollow shape, the first through hole 111 of the first electrode portion 110a is a suction passage. can function as

At this time, a fourth suction hole 184 may be formed in a direction opposite to the second open part 182 of the abrasive cutting part 180a, and the fourth suction hole 184 is rotated according to the rotation of the abrasive cutting part 180a. ) coincides with the positions of the second suction hole 156 and the third suction hole 115, the suction target, such as blood, tissue or bone fragments, sequentially passes through the third suction hole 115 and the second suction hole 156. ) and the fourth suction hole 184 and may be suctioned through the third through hole 183 . In addition, even if the position of the fourth suction hole 184 does not coincide with the position of the second suction hole 156 and the third suction hole 115 according to the rotation of the abrasive cutting part 180a, the suction target is the third suction hole. 115, the second suction hole 156, and the second open portion 182 may be suctioned through the third through hole 183. In addition, since the end of the abrasive cutting part 180a is open, tissues, etc., which are suctioned through the first suction hole 155 of the second insulating part 140a, can be naturally suctioned through the third through hole 183. .

Meanwhile, tissue can be cut by the interaction between the first blade region 158 of the second insulating portion 140a and the second blade region 181 of the abrasive cutting portion 180a. With the first open part 157 of the insulating part 140a and the second open part 182 of the abrasive cutting part 180a facing the same direction, the suction unit 400 operates to make the third through hole. When a vacuum is applied within the 183, tissue is suctioned (pulled) through the second open portion 182, and as shown in FIG. 7, the abrasive cutting portion 180a rotates inside the first electrode portion 110a. The first open portion 157 and the second open portion 182 face in different directions, and in this process, the first blade region 158 and the second blade region 181 act like scissors to create suction. Tissues (pulled) can be cut. That is, the tissue can be cut while the second blade region 181 rotates inside the first blade region 158 . At this time, the first blade region 158 and the second blade region 181 may be implemented in a simple blade shape or may be implemented in a sawtooth shape to improve cutting capability.

In this way, when tissue is cut due to the interaction between the abrasive cutting portion 180a and the second insulating portion 140a, bleeding may occur. In the past, a method of removing the shaver device that performed the cutting from the surgical site and inserting an electric cautery device for hemostasis was used for hemostasis, and thus, troublesome problems such as inserting and removing the surgical device and prolonged operation time and infection due to tool replacement There was a question of risk. However, the medical ablation device 100a according to the present embodiment can perform not only the function of a shaver but also the function of electrocautery, and the abrasive cutting part 180a can be removed while the medical ablation device 100a is inserted into the surgical site. After the tissue is cut according to the operation, an electrical signal may be applied to the first electrode unit 110a or the second electrode unit 120a to coagulate or cauterize the tissue, thereby enabling hemostasis. In addition, the surgical site can be kept clean by continuously suctioning blood, tissues, bone fragments, and the like.

On the other hand, the control unit 300 shown in FIG. 1 includes suction according to the suction unit 400, coagulation or cauterization according to the first electrode part 110a and the second electrode part 120a, and the second insulating part 140a. And it is possible to control the hand piece 200 and the medical cutting device 100a so that the cutting according to the abrasive cutting part 180a is smoothly performed. According to the rotational position or use time of the abrasive cutting part 180a, a suction signal, It is also possible to give different coagulation or cauterization signals, or it may be possible to continuously control rotation, suction, coagulation, or cauterization of the abrasive cutting unit 180a to proceed.

8 is a perspective view showing an abrasive cutting part 180b of a medical ablation device according to another embodiment of the present invention. Hereinafter, with reference to this, the medical ablation apparatus according to the present embodiment will be described.

The medical ablation device according to the present embodiment includes a first electrode part 110a, a second electrode part 120a, a first insulating part 130a, a second insulating part 140a, and a third insulating part as in the previous embodiment. It includes a portion 170a and an abrasive cutting portion 180b, but the abrasive cutting portion 180b has the shape of a burr rather than the shape of a shaver having the second blade region 181 as in the previous embodiment. can be characterized.

Accordingly, the medical ablation device according to the present embodiment may be used for grinding or cutting bone, not for cutting tissue, and the abrasive cutting part 180b grinds or cuts the bone, and the first electrode part 110a and the second electrode unit 120a may perform a coagulation or cauterization function for hemostasis or the like.

In this way, when the abrasive cutting portion 180b is implemented as a burr, a separate blade region may not be formed in the second insulating portion 140a.

FIG. 9 is a perspective view showing a medical ablation device 100c according to another embodiment of the present invention, and FIG. 10 is a cross-sectional view showing the medical ablation device 100c shown in FIG. 9 . Hereinafter, with reference to this, the medical ablation device 100c according to the present embodiment will be described.

9 and 10, the medical ablation device 100c according to the present embodiment includes a first electrode part 110c, a second electrode part 120c, a first insulating part 130c, and a second insulating part. A portion 140c, a third insulating portion 170c, and a polishing cutting portion 180c may be included.

The first electrode part 110c is a member that coagulates or cauterizes tissue together with the second electrode part 120c when an electrical signal is applied, and is made of, for example, stainless steel, tungsten or a tungsten alloy, molybdenum or It may be composed of metals such as molybdenum alloys, titanium or titanium alloys, and the like. In addition, the first electrode part 110c may be implemented in a hollow shape extending in a first direction, which is a longitudinal direction, and having at least a portion of the first through hole 111c therein. Here, in the first electrode part 110c, a third open part 118 opened in the same direction as the first open part 157c at a position corresponding to the first open part 157c of the second insulating part 140c. can be formed. A third blade region 119 may be formed in the third open portion 118, and tissue or bone may be polished or cut by interaction with the abrasive cutting region 181 of the rotatable abrasive cutting portion 180c. .

FIG. 11 is an exploded perspective view showing some components of the medical ablation device 100c shown in FIG. 9 in an exploded manner. Hereinafter, referring to FIGS. 9 to 11 , the second electrode part 120c, the first insulating part 130c, the second insulating part 140c, the third insulating part 170c and the polishing cutting part according to the present embodiment Let's take a look at (180c).

The second electrode part 120c is a member that coagulates or cauterizes tissue together with the first electrode part 110c when an electrical signal is applied, and like the first electrode part 110c, the electrical signal is well conducted, for example, stainless steel. It may consist of metals such as steel, tungsten or tungsten alloys, molybdenum or molybdenum alloys, titanium or titanium alloys, and the like. The second electrode unit 120c extends in the first direction, which is the longitudinal direction, and at least a portion thereof may be implemented in a hollow shape having a second through hole 121c therein, and a second electrode unit 120c may have a second through hole 121c therein. At least a part of the first electrode part 110c may be located. Here, the second electrode unit 120c may function as an active electrode, and the first electrode unit 110c may function as a passive electrode, or vice versa.

Meanwhile, the second electrode part 120c may include a body part 123 and an exposed part 124 . Here, the exposed part 124 is a part located on the outer surface of the second insulating part 140a and exposed to the outside, and the main body part 123 has most of the area surrounded by the outside of the second electrode part 120c. 3 may not be exposed to the outside by the insulating portion 170c. The exposed portion 124 may be coupled, for example, by welding in an overlapped state with at least a portion of the body portion 123, and a suction hole for suction may be formed in each of the exposed portion 124 and the body portion 123. can Also, the exposed part 124 and the main body part 123 may be integrally formed rather than separated.

The first insulating portion 130c is a member that insulates at least a portion between the first electrode portion 110c and the second electrode portion 120c. Here, the first insulating part 130c is implemented in a tube shape and may be positioned between the first electrode part 110c and the second electrode part 120c in a form surrounding at least a part of the first electrode part 110c. . At this time, the first electrode portion 110c and the second electrode portion 120c are not insulated only by the first insulating portion 130c, and between the first electrode portion 110c and the second electrode portion 120c. A part of the insulation layer 130c may be insulated and the rest may be insulated by the second insulation unit 140c. At this time, as in the previous embodiment, it is also possible to realize more perfect insulation by implementing the first insulation part 130c as two layers.

The second insulating part 140c may insulate the first electrode part 110c and the second electrode part 120c from being short-circuited inside while wrapping a part of the first electrode part 110c so as not to be exposed to the outside. . Here, a first open portion 157c open in the same direction as the third open portion 118 of the first electrode portion 110c may be formed in the second insulating portion 140c. Therefore, while the third open portion 118 of the first electrode portion 110c is exposed to the outside through the first open portion 157c, the third blade region 119 formed in the third open portion 118 is exposed to the outside. can be exposed. At this time, a part of the second electrode unit 120c may function as an exposed electrode by being located on the outer surface of the second insulation unit 140c, and the second insulation unit corresponding to the suction hole of the second electrode unit 120c ( A suction hole is formed at the position 140c) so that blood, tissue or bone can be suctioned. In addition, a separate side suction hole 155c may be further formed at an end of the second insulating portion 140c, and suction may be performed through this, so that suction efficiency may be improved. At this time, the corresponding positions of the first electrode part 110c and the polishing cutting part 180c may be open so that there is no problem with suction.

The abrasive cutting part 180c is rotatably implemented as a member for grinding or cutting tissue or bone, is located inside the first through hole 111c of the first electrode part 110c, and has a second insulating part ( A polishing cutting area 181 may be formed in an area adjacent to 140c). Here, when the abrasive cutting part 180c is implemented as a shaver, the second open part 182 may be formed in the abrasive cutting part 180c, and the abrasive cutting area implemented as a blade area is formed in the second open part 182. (181) can be formed. At this time, when vacuum is applied to the third through hole 183 of the abrasive cutting part 180c by operating the suction unit, tissue is suctioned (pulled) through the second open part 182, and the abrasive cutting part 180c ) is rotated, the abrasive cutting area 181 of the second open portion 182 is rotated inside the third blade area 119 of the third open portion 118, and tissue can be cut. In addition, it is also possible to implement the second blade region 181 and the third blade region 119 in a sawtooth shape in order to improve cutting performance.

This embodiment is different from the previous embodiment in that the blade region is formed on the first electrode part 110c instead of the second insulating part 140c. In this embodiment, since the third blade region 119 is formed on the first electrode portion 110c made of metal, mechanical strength may be excellent, and both the second blade region 181 and the third blade region 119 are Since it is made of metal, mutual matching is improved and cutting power can be further improved.

Meanwhile, in this embodiment, the case where the abrasive cutting part 180c is a shaver has been described, but it will also be possible to be composed of a burr like the previous embodiment.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the medical ablation apparatus according to the present invention is not limited thereto, and within the technical spirit of the present invention, common knowledge in the art It will be said that it is clear that the modification or improvement is possible by those who have the .

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

Claims

Doedoe extending in a first direction, at least a portion of the hollow first electrode portion having a first through hole therein;

a hollow second electrode portion having at least a portion of the second through hole so that at least a portion of the first electrode portion is positioned therein;

a first insulating part positioned between the first electrode part and the second electrode part to insulate between the first electrode part and the second electrode part;

a second insulator having a first open portion, at least a portion of which is disposed to cover a portion of the first electrode portion, a portion of which is exposed to the outside, and which is open toward a direction different from the first direction;

a third insulator covering at least a portion of the second electrode portion so that a portion of the second electrode portion is exposed to the outside; and

an abrasive cutting part located inside the first through hole and having an abrasive cutting area formed in an area adjacent to the second insulating part and being rotatable;

A medical resection device comprising a.
According to claim 1,

When an electric signal is applied to the first electrode part or the second electrode part, an area of the first electrode part exposed to the outside and not covered by the second insulating part and not covered by the third insulating part are exposed to the outside. The tissue is coagulated or ablated by the area of the second electrode part exposed to

When the abrasive cutting part is rotated, tissue or bone is abraded or cut by the abrasive cutting region.
According to claim 1,

A medical ablation apparatus, characterized in that one side of both sides of the second insulating portion along the first direction covers the first electrode portion and a first suction hole is formed on the other side.
According to claim 1,

The first electrode part,

a first electrode main body at least a part of which is located inside the second through hole, has the first through hole therein, and is not exposed to the outside by the second insulating part;

a first electrode exposed portion positioned on an outer surface of the second insulating portion and exposed to the outside; and

a first electrode connecting portion electrically connected between the first electrode body portion and the first electrode exposed portion, at least a portion of which is not exposed to the outside by the second insulating portion;

A medical ablation apparatus comprising a.
According to claim 4,

The second insulator,

At least a portion is located on an outer surface of the first electrode body so that the first electrode body is not exposed to the outside, but a seating portion is formed so that the first electrode connection portion is located on at least a portion of the outer surface, and the first electrode is formed on the outer surface. a second insulating body portion in which the exposed portion is located; and

At least a portion of the first electrode connection portion is coupled to the second insulating body portion so as not to be exposed to the outside, and at least a portion is positioned between the second electrode portion and the first electrode body portion so that the second electrode portion and the first electrode body portion are connected to each other. a second insulating cover portion that insulates between the first electrode main body portions;

A medical ablation apparatus comprising a.
According to claim 5,

The first insulator,

a 1-1 insulating part located on at least a part of the outer surface of the first electrode part; and

a 1-2 insulating part positioned on at least a part of an outer surface of the 1-1 insulating part;

including,

A space between the first electrode part and the second electrode part includes a first region and a second region, and the first region comprises the 1-1 insulating part and the second insulating cover on the 1-1 insulating part. and the second region is insulated by the 1-1 insulating part and the 1-2 insulating part on the 1-1 insulating part.
According to claim 1,

A first blade region is formed in the first open portion of the second insulating portion, and when the abrasive cutting portion is rotated, tissue or bone is polished or cut by the abrasive cutting region and the first blade region. ablation apparatus.
According to claim 7,

The abrasive cutting part has a second open part opened in a direction different from the first direction, and the abrasive cutting area is formed in the second open part and is a second blade area for polishing or cutting the tissue. A medical ablation device made of.
According to claim 8,

Medical ablation apparatus, characterized in that at least a portion of the abrasive cutting portion has a hollow shape having a third through-hole used as a suction passage for suction therein.
According to claim 9,

A second suction hole is formed in a direction opposite to the first open part of the second insulating part,

A third suction hole is formed in the first electrode part at a position corresponding to the second suction hole,

The suction target is medical, characterized in that the suction through the suction passage passes through the third suction hole, the second suction hole, and the second open portion or a fourth suction hole formed in the opposite direction of the second open portion in order. ablation apparatus.
According to claim 1,

The medical ablation apparatus, characterized in that the abrasive cutting part is a burr for grinding or cutting the bone.
According to claim 1,

The medical ablation apparatus of claim 1 , wherein the first electrode portion includes a third open portion opened toward the same direction as the first open portion.
According to claim 12,

A third blade region is formed in the third open portion, and when the abrasive cutting portion is rotated, tissue or bone is polished or cut by the abrasive cutting region and the third blade region.
According to claim 12,

The second electrode part,

an exposed portion located on an outer surface of the second insulating portion and exposed to the outside; and

a body portion at least partially covered by a third insulating portion and coupled to the exposed portion;

A medical ablation apparatus comprising a.