CN223787782U - An electrode structure, an intraocular plasma electrode tip, and an intraocular surgical instrument. - Google Patents

Abstract

This invention provides an electrode structure, an intraocular plasma electrode tip, and an intraocular surgical instrument. The electrode structure includes a rod and a working part. The rod includes a first proximal segment and a first distal segment connected axially. The thickness of the working part gradually decreases in a direction away from its own axis, and the thickness of the working part refers to its dimension in its own axial direction. The working part is connected to the first distal segment, and an obtuse angle is formed between the working part and the first proximal segment. The electrode structure can be used as the internal electrode of an intraocular plasma electrode tip. Therefore, based on the feature that the thickness of the working part decreases in a direction away from the third region, on the one hand, the power of the intraocular plasma electrode tip can be increased, thereby increasing the amount of plasma generated when the intraocular plasma electrode tip is working to improve surgical efficiency. On the other hand, the edge of the working part can also be used as a dissection tool to facilitate the dissection of diseased tissue.

Description

Electrode structure, in-ear plasma electrode tool bit and in-ear surgical instrument

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to an electrode structure, an in-ear plasma electrode cutter head and an in-ear surgical instrument.

Background

The in-ear plasma electrode tool bit is widely applied to cutting and coagulation operations of operations such as in-ear mirror tympanic membrane repair operation, in-ear mirror tympanic cavity forming operation, in-ear mirror nerve decompression operation, full-ear mirror operation such as ear canal-tympanic cape vestibular schwannoma excision operation and the like. In the operation process, the in-ear plasma electrode knife head forms a low-temperature plasma thin layer at the front end of the knife head through an electric field excitation medium (such as normal saline), and charged particles in the thin layer break molecular bonds of tissues so as to decompose the tissues and achieve the effects of vaporizing, cutting, ablating, perforating, solidifying and the like of the tissues.

Disclosure of utility model

The utility model aims to provide an electrode structure, an in-ear plasma electrode knife head and an in-ear surgical instrument, which aim to shorten the time of in-ear surgery and improve the surgery efficiency.

To achieve the above object, the present utility model provides an electrode structure comprising:

a stem portion including a first proximal section and a first distal section axially connected, and

The device comprises a working part, wherein the thickness of the working part gradually decreases along the direction away from the axis of the working part, the thickness of the working part refers to the dimension of the working part in the axial direction of the working part, the working part is connected with the first distal end section, and an obtuse angle is formed between the working part and the first proximal end section.

Optionally, the proximal facing surface of the working portion is planar.

Optionally, the maximum thickness of the portion of the working portion that meets the stem portion is greater than the maximum thickness of other portions of the working portion.

Optionally, an obtuse angle is formed between the first proximal section and the first distal section, and the working portion is located within the obtuse angle formed by the first proximal section and the first distal section;

The projection of the first distal section on a preset plane comprises a first edge line and a second edge line which are opposite, wherein the first edge line corresponds to the first side, the second edge line corresponds to the second side, and the first edge line is arc-shaped with a concave side facing the second side;

the predetermined plane is parallel to the axis of the first proximal section and the axis of the working portion.

Optionally, the outer diameter of the first distal section decreases in a proximal to distal direction.

Optionally, the working portion is of annular configuration, and/or,

The outer contour of the working part is round or oval.

In order to achieve the above object, the present utility model also provides an in-ear plasma electrode cutter head, comprising:

A hollow outer electrode comprising a second distal section and a second proximal section axially connected;

A hollow first insulating structure partially penetrating the outer electrode, and a distal end of the first insulating structure extending from a distal end of the outer electrode;

The electrode structure of any one of the preceding claims, partially penetrating the first insulating structure with the first distal section and the working portion extending from a distal end of the first insulating structure, and

A second insulating structure disposed on a portion of an outer surface of the second proximal section.

Optionally, the second insulating structure is an insulating coating coated on a portion of an outer surface of the second proximal section.

To achieve the above object, the present utility model also provides an in-ear surgical instrument comprising:

A hollow handle;

An in-ear plasma electrode tip as described above, the proximal end of the in-ear plasma electrode tip extending into the interior of the handle and being connected to the handle;

The power supply cable comprises a first cable and a second cable, wherein the distal end of the first cable extends into the handle and is electrically connected with the proximal end of the rod part, and the distal end of the second cable extends into the handle and is electrically connected with the second proximal end section.

Optionally, the in-ear surgical instrument further comprises a cannula mount partially disposed within and connected to the handle, a distal end of the cannula mount extending from a distal end of the handle;

The proximal end of the in-ear plasma electrode tool bit is connected with the sleeve fixing frame in an insulating mode.

Compared with the prior art, the electrode structure, the in-ear plasma electrode knife head and the in-ear surgical instrument have the following advantages:

The electrode structure comprises a rod part and a working part, wherein the rod part comprises a first proximal end section and a first distal end section which are axially connected, the thickness of the working part gradually decreases along the direction away from the axis of the working part, the thickness of the working part refers to the dimension of the working part in the axial direction of the working part, the working part is connected with the first distal end section, and an obtuse angle is formed between the working part and the first proximal end section. The electrode structure can be used as an inner electrode of the in-ear plasma electrode cutter head, so that the power of the in-ear plasma electrode cutter head can be improved on the one hand based on the characteristic that the thickness of the working part is reduced along the direction away from the third area, and the amount of plasma excited to form when the in-ear plasma electrode cutter head works is further improved to improve the operation efficiency, and on the other hand, the edge of the working part can be used as a stripping tool to conveniently strip diseased tissues.

Further, the surface of the working part facing the proximal end is a plane, so that the contact area between the working part and tissues can be increased, and the coagulation effect can be improved when the electrode tool bit in the ear and the like is used for coagulation.

Drawings

The drawings are included to provide a better understanding of the utility model and are not to be construed as unduly limiting the utility model. Wherein:

FIG. 1 is a schematic view of an electrode structure according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view at A of FIG. 1;

FIG. 3 is a schematic view of an electrode structure according to an embodiment of the present utility model, and FIG. 2 is different from FIG. 1 in viewing orientation;

FIG. 4 is a schematic view of an in-ear plasma electrode tip provided in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic view of an in-ear plasma electrode bit provided in accordance with an embodiment of the utility model, FIG. 5 being oriented differently than FIG. 4;

Fig. 6 is a schematic view of an in-ear surgical instrument provided in accordance with an embodiment of the present utility model.

Reference numerals are described as follows:

1-in-ear surgical tool, 10-in-ear plasma electrode blade, 20-handle, 30-cannula mount, 40-cable sheath, 100-electrode structure, 110-stem, 111-first proximal section, 112-first distal section, 1121-first side, 1122-second side, 120-working section, 121-working face, 122-bore, 200-outer electrode, 300-first insulation structure, 400-second insulation structure.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

In addition, each embodiment of the following description has one or more features, respectively, which does not mean that the inventor must implement all features of any embodiment at the same time, or that only some or all of the features of different embodiments can be implemented separately. In other words, those skilled in the art can implement some or all of the features of any one embodiment or a combination of some or all of the features of multiple embodiments selectively, depending on the design specifications or implementation requirements, thereby increasing the flexibility of the implementation of the utility model where implemented as possible.

As used in this specification, the singular forms "a", "an" and "the" include plural referents, unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, as for example, they may be fixed, they may be removable, or they may be integrally connected. It may be a mechanical connection that is made, or may be an electrical connection. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, nor does it indicate or imply relative importance or number of technical features indicated. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms "proximal" and "distal" as used herein are defined based on the relative positions, relative orientations of the various components, parts, and features of the medical device, and although not limited thereto, are generally the ends of the medical device that first enter the patient during normal use, and are the ends that are closer to the operator.

The utility model will be further described in detail with reference to the accompanying drawings, in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. The same or similar reference numbers in the drawings refer to the same or similar parts.

Fig. 1 and 3 show an electrode structure 100 according to an embodiment of the present utility model from different orientations, respectively, and fig. 2 is an enlarged schematic view at a in fig. 1. As shown in fig. 1 to 3, the electrode structure 100 includes a stem 110 and a working portion 120. The stem 110 includes a first proximal section 111 and a first distal section 112 that are axially connected. The thickness of the working portion 120 gradually decreases in a direction away from its own axis S1. The working portion 120 is connected to the first distal section 112, and an included angle α formed between the working portion 120 and the first proximal section 111 is an obtuse angle, so that an axis S1 of the working portion 120 intersects or is different from an axis S2 of the first proximal section 111. The "thickness of the working portion 120" herein refers to the dimension of the working portion 120 in its own axial direction.

The electrode structure 100 can be used as an inner electrode of the in-ear plasma electrode tip 10 (as shown in fig. 4 and 5), and the in-ear plasma electrode tip 10 has the advantages that the edge of the working portion 120 is thinner at ① due to the reduced thickness of the working portion 120 of the electrode structure 100 along the direction away from the axis S1, so that the output power of the in-ear plasma electrode tip 10 during operation is improved, and the plasma generated by the in-ear plasma electrode tip 10 excited by the medium is increased, thereby improving the operation efficiency, and the edge of the working portion 120 is sharper and corresponds to a blade portion, so that the working portion 120 can be used as a peeling tool to peel off the lesion tissue.

The outer contour of the working portion 120 is not particularly limited in the embodiment of the present utility model, and may have any suitable shape, such as a circle, an ellipse, or other shapes.

Preferably, as shown in fig. 1 and 2, a maximum thickness h1 of a portion of the working portion 120 contacting the lever portion 110 is greater than a maximum thickness h2 of other portions of the working portion 120. By doing so, the connection area between the working portion 120 and the rod portion 110 can be increased, so that the connection strength between the rod portion 110 and the working portion 120 is improved, the overall strength of the electrode structure 100 is further improved, and the risk that the connection portion between the rod portion 110 and the working portion 120 breaks in the use process of the electrode structure 100 is reduced.

Further, the lever 110 and the working part 120 are integrally formed. In practice, the first structure and the second structure may be formed at one time by punching, wherein the first structure is used as the lever portion 110, and the working portion 120 is formed by engraving the second structure. Such a molding manner is advantageous for further improving the overall strength of the electrode structure 100, thereby further reducing the risk of breakage of the connection portion between the rod portion 110 and the working portion 120 during use of the electrode structure 100.

Alternatively, as shown in fig. 1 and 2, the surface of the working portion 120 facing the proximal end is a working surface 121, and the working surface 121 is preferably a plane. The reason for this is that the working surface 121 is brought into contact with the tissue when the coagulation operation is performed on the tissue by the working portion 120, and the planar working surface 121 has a large contact area with the tissue, thereby improving the coagulation effect. Furthermore, the angle α mentioned in the foregoing refers to the angle formed between the working surface 121 and the first proximal section 111.

Alternatively, as shown in fig. 3, the working portion 120 is a ring-shaped structure having an inner bore 122. In this way, the inner bore 121 and the associated aspiration channel may be used to aspirate residue from an in-ear surgical procedure. The manner in which the aspiration channel is provided when performing an in-ear operation using the in-ear plasma electrode tip 10 is well known to those skilled in the art and will not be described in detail herein.

Optionally, an included angle β is formed between the first proximal section 111 and the first distal section 112, and the included angle β is an obtuse angle. The working portion 120 is located within the included angle β.

A plane parallel to the axis S2 of the first proximal section 111 and the axis S2 of the working portion 120 is defined as a preset plane, which is a plane of or parallel to the paper surface as seen in the orientation shown in fig. 1. The first distal segment 112 has opposite sides, a first side 1121 and a second side 1122, respectively, the second side 1122 being connected to the working portion 120. When the first distal segment 112 and the working portion 120 are projected onto the predetermined plane, the projection of the first distal segment 112 has opposite first and second edge lines, wherein the first edge line corresponds to the first side 1121 and the second edge line corresponds to the second side 1122, such that the second edge line is closer to the projection of the working portion 120 than the first edge line.

In the in-ear plasma electrode cutter head 10, the first distal end segment 112 is directly exposed. It is therefore preferred that the first edge line be curved with a concave side facing the first edge line, so that the conformation of the first distal segment 112 to the ear canal can be improved, making it easier for the first distal segment 112 to enter the ear and reach the lesion.

More preferably, the outer diameter of the first distal segment 112 also decreases in the proximal-to-distal direction to further improve the conformation of the first distal segment 112 to the ear canal.

Another object of the present utility model is to provide an in-ear plasma electrode cutting head 10 as shown in fig. 4 and 5. As shown in fig. 4 and 5, the in-ear plasma electrode-tip 10 includes an outer electrode 200, a first insulating structure 300, a second insulating structure 400, and the electrode structure 100 as described above. The outer electrode 200 and the first insulating structure 300 are elongated hollow members. Wherein the outer electrode 200 further comprises a second proximal section 210 and a second distal section 220 axially connected. The first insulating structure 300 partially penetrates the outer electrode 200, and the distal end of the first insulating structure 300 extends from the distal end of the outer electrode. The electrode structure 100 is partially disposed through the first insulating structure 300, and the first distal section 112 and the working portion 120 extend from the distal end of the first insulating structure 300. The second insulating structure 400 is disposed on a portion of the outer surface of the second proximal section 111.

That is, compared to the in-ear plasma electrode tip in the prior art, the in-ear plasma electrode tip 10 provided in the embodiment of the present utility model uses the electrode structure 100 as an inner electrode, so that the in-ear plasma electrode tip 10 can have higher output power to excite more plasmas, improve the operation efficiency, and make the in-ear plasma electrode tip 10 have good cutting, scratching, scraping and digging effects, so as to facilitate the peeling of diseased tissues.

Optionally, the second insulating layer structure 400 is an insulating coating coated on a portion of the outer surface of the second proximal section 210. In this way, the outer diameter of the in-ear plasma electrode tip 10 can be reduced, thereby making it easier for the in-ear plasma electrode tip 10 to enter the ear and reducing damage to the ear canal.

Optionally, the outer diameter of the outer electrode 200 decreases in a proximal to distal direction to facilitate the in-ear plasma electrode cutting head 10 to enter the ear and also reduce damage to the ear canal and increase the flexural strength of the outer electrode 200.

It is a further object of the present utility model to provide an in-ear surgical device 1 as shown in fig. 6. As shown in fig. 6, the in-ear surgical instrument 1 includes a handle 20, a power supply cable (not shown), and an in-ear plasma electrode-cutter head 10 as previously described. The handle 20 is hollow. The proximal end of the in-ear plasma electrode cutter head 10 extends into the interior of the handle 20 and is connected to the handle 20. The power supply cable includes a first cable having a distal end extending into the handle 20 and electrically connected to the proximal end of the stem 110, and a second cable having a distal end extending into the handle 20 and connected to the proximal end of the external electrode 200.

It will be appreciated that the proximal end of the stem 110 extends from the proximal end of the first insulating structure 300 to enable the proximal end of the stem 110 to be electrically connected to the distal end of the first cable. The area of the second proximal section 210 not covered by the second insulation structure 400 is located within the handle 20 and is electrically connected to the second cable.

The proximal end of the in-ear plasma electrode cutter head 10 may be directly connected to the handle 20 or indirectly connected thereto. In an alternative embodiment, the in-ear surgical device 1 further comprises a cannula holder 30, the proximal end of the cannula holder 30 being arranged inside the handle 20 and being connected to the handle 20. The distal end of the cannula mount 30 extends from the distal end of the handle 20. The proximal end of the in-ear plasma electrode cutter head 10 is arranged on the sleeve fixing frame 30 and is in insulating connection with the sleeve fixing frame 30. That is, the in-ear plasma electrode cutter head 10 is connected to the handle 20 through the cannula mount 30.

The sleeve mount 30 may be made of an insulating material or the sleeve mount 30 may comprise a body and an insulating layer provided on an outer surface of the body, thereby insulating between the sleeve mount 30 and the in-ear plasma torch head 10.

In addition, the proximal end of the handle 20 is also provided with a cable sheath 40. The proximal end of the power supply cable may extend from the proximal end of the cable sheath 40 to facilitate external power connection.

Although the present utility model is disclosed above, it is not limited thereto. Various modifications and alterations of this utility model may be made by those skilled in the art without departing from the spirit and scope of this utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. An electrode structure, comprising:

a stem portion including a first proximal section and a first distal section axially connected, and

The device comprises a working part, wherein the thickness of the working part gradually decreases along the direction away from the axis of the working part, the thickness of the working part refers to the dimension of the working part in the axial direction of the working part, the working part is connected with the first distal end section, and an obtuse angle is formed between the working part and the first proximal end section.

2. The electrode structure of claim 1, wherein the proximally facing surface of the working portion is planar.

3. The electrode structure according to claim 1 or 2, wherein a maximum thickness of a portion of the working portion that meets the shaft portion is greater than a maximum thickness of other portions of the working portion.

4. The electrode structure of claim 3, wherein the first proximal section and the first distal section form an obtuse angle therebetween, and the working portion is located within the obtuse angle formed by the first proximal section and the first distal section;

The projection of the first distal section on a preset plane comprises a first edge line and a second edge line which are opposite, wherein the first edge line corresponds to the first side, the second edge line corresponds to the second side, and the first edge line is arc-shaped with a concave side facing the second side;

the predetermined plane is parallel to the axis of the first proximal section and the axis of the working portion.

5. The electrode structure of claim 4, wherein the outer diameter of the first distal section decreases in a proximal-to-distal direction.

6. The electrode structure according to claim 1, wherein the working portion is a ring-shaped structure, and/or,

The outer contour of the working part is round or oval.

7. An in-ear plasma electrode cutting head, comprising:

A hollow outer electrode comprising a second distal section and a second proximal section axially connected;

A hollow first insulating structure partially penetrating the outer electrode, and a distal end of the first insulating structure extending from a distal end of the outer electrode;

The electrode structure of any one of claims 1-6, partially disposed through said first insulating structure with said first distal section and said working portion extending from a distal end of said first insulating structure, and

A second insulating structure disposed on a portion of an outer surface of the second proximal section.

8. The in-ear plasma electrode cutting head according to claim 7, wherein said second insulating structure is an insulating coating coated on a portion of an outer surface of said second proximal segment.

9. An in-ear surgical instrument, comprising:

A hollow handle;

An in-ear plasma electrode tip as claimed in claim 7 or 8, the proximal end of the in-ear plasma electrode tip extending into the interior of the handle and being connected to the handle;

The power supply cable comprises a first cable and a second cable, wherein the distal end of the first cable extends into the handle and is electrically connected with the proximal end of the rod part, and the distal end of the second cable extends into the handle and is electrically connected with the second proximal end section.

10. The in-ear surgical instrument of claim 9, further comprising a cannula mount disposed partially within and connected to the handle, a distal end of the cannula mount extending from a distal end of the handle;

The proximal end of the in-ear plasma electrode tool bit is connected with the sleeve fixing frame in an insulating mode.