CN215425045U - High-frequency electric knife - Google Patents
High-frequency electric knife Download PDFInfo
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- CN215425045U CN215425045U CN202022913319.7U CN202022913319U CN215425045U CN 215425045 U CN215425045 U CN 215425045U CN 202022913319 U CN202022913319 U CN 202022913319U CN 215425045 U CN215425045 U CN 215425045U
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Abstract
The utility model provides a high-frequency electrotome, which comprises a sheath, an electrode and an insulating part, wherein the electrode is connected with the far end of the sheath and can extend out and retract along the axial direction of the sheath; the insulator is attached to a radially outer side of the distal end of the electrode such that the distal end of the electrode is exposed in the axial direction, and the distal end of the insulator projects in the distal direction of the electrotome relative to the distal end of the electrode in the axial direction. In the high-frequency electrotome of the embodiment of the utility model, the far end of the electrode is provided with the insulating part, the insulating part is positioned at the outer side of the far end of the electrode, and the far end of the insulating part axially exceeds the far end of the electrode, so that when the working part of the electrode is used for cutting, the far end of the electrode cannot contact human tissues to cause damage; when the far end of the electric knife is abutted against the human tissue and certain acting force is applied, the far end of the insulating part is sunk into the human tissue, so that the far end of the electrode is contacted with the human tissue, and the marking function is realized.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a high-frequency electrotome.
Background
The common single-stage high-frequency electrotome comprises a rod-shaped electrode and an insulator connected to the head end of the electrode, wherein the electrode can form relatively large contact resistance at the contact part with the tissue after being electrified so as to generate heat to coke or vaporize the tissue, and the insulator is used for abutting against the tissue which is not required to be cut so as to avoid the tissue from being burnt by the discharge of the head end of the electrode. Prior to tissue cutting with a high frequency electrosurgical knife, in order for an operator to accurately capture the surgical field, it is often necessary to perform a local burn on the periphery of the tissue to be cut to mark the field. Due to the fact that multiple functions such as marking and cutting need to be achieved, different instruments need to be replaced for operation in the operation process, operation time is long, and operation of doctors is complex.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a high-frequency electrotome which can shorten the operation time and relieve the pain of a patient.
The utility model provides a high-frequency electrotome, comprising:
a sheath;
an electrode connected to a distal end of the sheath and capable of being extended and retracted in an axial direction of the sheath;
the insulating piece is connected to the radial outer side of the distal end of the electrode, so that the distal end of the electrode is exposed in the axial direction, and the distal end of the insulating piece protrudes relative to the distal end of the electrode in the axial direction to the distal direction of the electric knife.
Further, the insulator includes a plurality of insulating portions distributed along a circumferential direction of the distal end of the electrode.
Further, the insulating portions are identical in shape and are uniformly distributed in the same plane in the circumferential direction of the electrode.
Further, at least the distal end of the insulating portion has a convex arc surface.
Further, at least part of the outer surface of the insulating part is spherical.
Further, the electrode comprises a main body part and a plurality of connecting parts, the main body part is connected with the far end of the sheath, the connecting parts extend out along the radial direction, the connecting parts are uniformly distributed along the circumferential direction of the electrode, one end of each connecting part is connected with the corresponding insulating part, and the other end of each connecting part is connected with the far end of the main body part to enable the far end of the electrode to form a plane.
Furthermore, an avoidance space is arranged between the adjacent connecting parts.
Further, the insulation part is coated on the outer side of the one end of the connecting part.
Further, the insulating part is a ring-shaped structure surrounding the far end of the electrode
Has the advantages that:
in the high-frequency electrotome of the embodiment of the utility model, the far end of the electrode is provided with the insulating part, the insulating part is positioned at the outer side of the far end of the electrode, and the far end of the insulating part axially exceeds the far end of the electrode, so that when the working part of the electrode is used for cutting, the far end of the electrode cannot contact human tissues to cause damage; when the far end of the electric knife is abutted against the human tissue and certain acting force is applied, the far end of the insulating part is sunk into the human tissue, so that the far end of the electrode is contacted with the human tissue, and the marking function is realized.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view of a high-frequency electrotome according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the high frequency electric knife of FIG. 1 in an extended state;
FIG. 3 is a cross-sectional view of the high frequency electric knife of FIG. 1 in a retracted state;
FIG. 4 is a schematic view of the high frequency electric knife of FIG. 1 in contact with body tissue in a cutting state;
FIG. 5 is a schematic view of the high frequency electric knife of FIG. 1 in contact with body tissue in a marked state;
FIG. 6 is a schematic view of the insulating portion of the high frequency electrotome of FIG. 1 radially contacting body tissue;
FIG. 7 is a top view of an insulation section in another embodiment of the present invention;
FIG. 8 is a top view of an insulation section in another embodiment of the present invention;
FIG. 9 is a perspective view of the high frequency blade of FIG. 1 with the electrodes connected to the insulating portion;
fig. 10 is a sectional view of a high-frequency electric knife according to another embodiment of the present invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or may be indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
In the related art, the distal end portion of the electric knife is usually an insulator, and the marking operation cannot be performed, so that other instruments need to be replaced during the operation, resulting in an increase in the operation time and increased pain of the patient. In view of the above, the present invention provides a high-frequency monopolar electric knife, wherein the distal end of the electrode has an insulating member, the insulating member is located outside the distal end of the electrode, and the distal end of the insulating member protrudes in the distal direction of the electric knife along the axial direction relative to the distal end of the electrode, so that, when a cutting operation is performed by using the working portion of the electrode, the distal end of the electrode does not contact human tissue to cause damage; when the far end of the electric knife is abutted against the human tissue and certain acting force is applied, the far end of the insulating part is sunk into the human tissue, so that the far end of the electrode is contacted with the human tissue, and the marking function is realized.
A high-frequency single-pole electric knife according to an embodiment of the present invention will be specifically described below with reference to fig. 1 to 4.
The high-frequency electrotome comprises a sheath 100, an electrode 200 and an insulating part 300, wherein the electrode 200 is connected with the distal end of the sheath 100 and can extend out and retract along the axial direction of the sheath 100, the tissue can be cut through the axial extending action, and the distal end of the electrode 200 can be further contacted with the human tissue when the distal end of the electrotome is abutted against the human tissue.
As used herein, "distal" refers to the end that is relatively far from the operator, "proximal" refers to the end that is relatively close to the operator, and "distal" and "proximal" are used for relative position and are not meant to be limiting as to the end faces of the members. When referring to the "axial", "radial" and "circumferential" directions of a component, the description is intended to illustrate the extension, tendency of movement, or relative position of the components and is not intended to limit the components to bodies of revolution. In addition, the present application, when referring to "axial", "radial" and "circumferential" without specific reference, refers to the axial, radial and circumferential directions of the electrode 200.
Specifically, the sheath 100 may be a circular tube made of an insulating material, the electrode 200 may be a long rod-shaped electrode, the electrode 200 is inserted into the sheath 100, and the electrode 200 as a whole can move along the axial direction of the sheath relative to the sheath 100. When the electrode 200 is in the state shown in fig. 1 and 2, the cutting portion 240 of the electrode 200 is located outside the sheath 100, and the cutting of the tissue can be performed after the power is applied. When electrode 200 is in the state shown in fig. 3, electrode 200 is located almost entirely or entirely within sheath 100. The proximal end of the electrode 200 may be connected to a wire cable 500 via a connector 400 (e.g., a sleeve in fig. 3), the proximal end of the wire cable 500 may be connected to a not shown operating handle, and an operator may control the axial movement of the electrode 200 via the operating handle and the wire cable, and at the same time, a not shown power source may supply power to the electrode 200 and the second electrode 400 via the wire cable.
In addition, the electrotome may be provided with a spacer 600, the spacer 600 being made of an insulating material, being attached to the distal end of the sheath 100 in the lumen and surrounding the radially outer side of the electrode 200 for guiding the axial movement of the electrode 200.
The insulator 300 is connected to the electrode distal end 250 and is located radially outside the electrode distal end 250, so that the insulator 300 is prevented from shielding the electrode distal end 250 in the axial direction, the electrode distal end 250 can be exposed in the axial direction, and the electrode distal end 250 can be conveniently contacted with human tissues. Meanwhile, the distal end of the insulating member 300 protrudes in the distal direction of the electric knife relative to the electrode distal end 250 in the axial direction, and in combination with the above, when the cutting portion 240 of the electrode 200 performs a cutting operation, the insulating member 300 can isolate the electrode distal end 250 from the human tissue, thereby preventing the electrode distal end 250 from causing unnecessary damage; when the marking operation is needed, the distal end of the electrotome can be abutted against the human tissue, and then the axial acting force is applied to enable the insulating piece 300 to sink into the human tissue for a certain distance, so that the contact between the electrode distal end 250 and the human tissue can be realized.
It should be noted that, referring to fig. 4, when the electrode 200 performs a cutting operation, the main contact portion with the human tissue 700 and the force application portion are the cutting portion 240 of the electrode 200, the contact force between the distal end of the electrode 200 and the human body is generally small, and even if the insulator 300 contacts the human tissue, the electrode distal end 250 is not usually sunk into the human tissue, or the sunk depth is small, so that the insulation of the electrode distal end 250 from the human tissue 700 is achieved by the insulator 300. Referring to fig. 5, when the electrode 200 performs a marking operation, a main contact portion with the human tissue 700 and a force application portion are distal ends of the electrode 200, so that good contact of the human tissue with the electrode distal end 250 can be ensured under application of a certain force.
Note that the arrows in fig. 4 and 5 indicate the movement or force application direction of the electrode 200.
Referring to fig. 1 and 6, in the above-mentioned electrotome, the insulating member 300 includes a plurality of insulating portions 310, the plurality of insulating portions 310 are uniformly distributed on the radial outer side of the electrode distal end 250 along the circumferential direction of the electrode 200, and adjacent insulating portions 310 are spaced apart by a certain distance, so as to form an escape space, so that even if the insulating portions 310 contact the human tissue 700 in the radial direction and are sunk to a certain depth, the electrode distal end 250 can be prevented from contacting the human tissue 700.
In the example shown in the figures, the insulating member 300 includes three insulating portions 310, and it should be noted that the insulating member 300 may include other numbers of insulating portions 310, such as two or four insulating portions shown in fig. 7 and 8. It can be understood that the greater the number of the insulating parts 310, the better the insulation effect; the fewer the number of insulating portions 310, the easier it is for the electrode distal end 250 to contact the human tissue 700 when marking.
In the above-mentioned electrotome, the insulating portions 310 have the same shape and are uniformly distributed in the same plane in the circumferential direction of the electrode 200, i.e. the distal ends of the insulating portions 310 protrude in the distal direction of the electrotome at the same distance from the distal end 250 of the electrode, so that the insulating portions 310 have the same isolation capability in the axial direction. Further, the distance of each insulating portion 310 beyond the electrode 200 in the radial direction may be equal, so that each insulating portion 310 has the same isolation capability in the circumferential direction. Taking the example shown in the figure, the distance of each insulating part 310 beyond the electrode 200 along the axial direction is equal, and the distance beyond the electrode 200 along the radial direction is also equal, so that the medical staff can realize the same isolation effect without using an electric knife according to a specific posture.
Referring to fig. 2 and 3, in the above-mentioned electrotome, at least the distal end of the insulating portion 310 has a convex arc surface, so that the distal end of the insulating portion 310 is more easily axially sunk into the human tissue 700, and the insulating portion 310 is easily contacted with the human tissue 700 during marking. It is understood that at least a part of the outer surface of the insulating portion 310 is spherical, and in particular, the insulating portion 310 may be a sphere, which is convenient for machining.
It will be appreciated that the insulating portion 310 may have other shapes, such as an ellipsoid, a cylinder, a frustum, etc., instead of the above.
Referring to fig. 6 and 9, in the above-mentioned electrotome, the electrode 200 includes a main body portion 210 and a plurality of connecting portions 220, wherein the main body portion 210 has a long rod-shaped structure and is connected to the distal end of the sheath 100, and a portion of the main body portion 210 extending out of the distal end of the sheath 100 serves as a cutting portion 240 for cutting human tissue 700. The connection portions 220 protrude in the radial direction, and are uniformly distributed along the plurality of connection portions 220 in the circumferential direction of the electrode 200. One end of the connection part 220 is connected to the body part 210, and the other end thereof protrudes to the radial outside of the body part 210 and is connected to the corresponding insulation part 310, thereby increasing the radial distance of the insulation part 310 to the electrode distal end 250, that is, increasing the radial isolation range of the insulation part 310.
Taking the illustration as an example, one end of the connecting portion 220 is connected to the distal end surface of the main body portion 210, and the distal end surfaces 221 of the connecting portions 220 are flush, that is, the distal end surfaces 221 of the connecting portions 220 together form a marking surface, and the marking surface can increase the marking range when the distal end surface of the electrode contacts human tissue.
In the above-described electrotome, the escape space 230 is formed between the adjacent connection parts 220, and even if the insulation part 310 contacts the human tissue 700 in the radial direction and is sunk to a certain depth, the contact of the electrode distal end 250 with the human tissue 700 can be prevented.
It can be understood that one end of the connecting portion 220 may be connected to the circumferential surface of the main body portion 210, in which case the distal end surface of each connecting portion 220 is flush with the distal end surface of the main body portion 210, that is, the distal end surface of each connecting portion 220 and the distal end surface of the main body portion 210 together form a marking surface, so that the marking range can be increased.
When the connecting portion 220 is connected to the distal end surface of the main body portion 210 as shown in the drawing, the "electrode distal end 250" is referred to as a connection point of each connecting portion 220; when the connecting portion 220 is connected to the circumferential surface of the main body portion 210, the electrode distal end 250 is referred to as the distal end of the main body portion 210.
Referring to fig. 2, in the above-mentioned electrotome, the insulating portion 310 is an insulating layer, and covers the outer side of the outer end of the connecting portion 220 away from the main body portion 210, and may be specifically a ceramic layer, a polymer chemical coating, or the like. When the electric knife is processed, the main body 210 and the plurality of connecting portions 220 are integrally formed, and then the insulating portion 310 is covered on the outer side of the outer end of the connecting portion 220, so that the electric knife is convenient to process.
Alternatively, the insulating portion 310 may be a separate member made of an insulating material, and when the electric knife is machined, the electrode 200 and the insulating portion 310 may be separately machined, and then the insulating portion 310 and the electrode 200 may be connected.
As an alternative to the above embodiment, referring to fig. 10, the insulator 300 may also be a ring-shaped structure surrounding the electrode 200, so as to completely isolate the electrode distal end 250 from the human tissue in the radial direction. The cross-section of the insulator 300 may be circular so that the distal end of the insulator 300 is more easily axially sunk into the human tissue 700, facilitating the insulator 300 to contact the human tissue 700 when marked.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (9)
1. High frequency electrotome, characterized in that comprises:
a sheath;
an electrode connected to a distal end of the sheath and capable of being extended and retracted in an axial direction of the sheath;
the insulating piece is connected to the radial outer side of the distal end of the electrode, so that the distal end of the electrode is exposed in the axial direction, and the distal end of the insulating piece protrudes relative to the distal end of the electrode in the axial direction to the distal direction of the electric knife.
2. The high-frequency electrotome according to claim 1, wherein the insulating member comprises a plurality of insulating portions distributed along the circumference of the distal end of the electrode.
3. The high-frequency electrotome according to claim 2, wherein the plurality of insulating portions are identical in shape and are uniformly distributed in the same plane in the circumferential direction of the electrode.
4. The high-frequency electric knife according to claim 2, wherein at least a distal end of the insulating portion has a convex curved surface.
5. The high-frequency electric knife according to any one of claims 2 to 4, wherein at least a part of the outer surface of the insulating portion is spherical.
6. The high-frequency electrotome according to any one of claims 2 to 4, wherein the electrode comprises a main body part and a plurality of connecting parts, the main body part is connected with the distal end of the sheath, the connecting parts extend in the radial direction, the plurality of connecting parts are uniformly distributed along the circumferential direction of the electrode, one end of each connecting part is connected with the corresponding insulating part, and the other end of each connecting part is connected with the distal end of the main body part so that the distal end of the electrode forms a plane.
7. The high-frequency electrotome according to claim 6, characterized in that an avoiding space is provided between adjacent connecting parts.
8. The high-frequency electrotome according to claim 6, characterized in that the insulating part is coated outside the one end of the connecting part.
9. The high frequency electrotome according to claim 1, wherein the insulator is an annular structure surrounding the distal end of the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913319.7U CN215425045U (en) | 2020-12-07 | 2020-12-07 | High-frequency electric knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913319.7U CN215425045U (en) | 2020-12-07 | 2020-12-07 | High-frequency electric knife |
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| Publication Number | Publication Date |
|---|---|
| CN215425045U true CN215425045U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022913319.7U Active CN215425045U (en) | 2020-12-07 | 2020-12-07 | High-frequency electric knife |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112545637A (en) * | 2020-12-07 | 2021-03-26 | 深圳开立生物医疗科技股份有限公司 | High-frequency electric knife |
-
2020
- 2020-12-07 CN CN202022913319.7U patent/CN215425045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112545637A (en) * | 2020-12-07 | 2021-03-26 | 深圳开立生物医疗科技股份有限公司 | High-frequency electric knife |
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