Radio frequency bipolar scissors for treating haemorrhoids

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a pair of radio frequency bipolar scissors for treating haemorrhoids, which comprises two cutter bodies, the two cutter bodies are oppositely arranged and can clamp tissues, the opposite surfaces of the two cutter bodies are cutting parts, electrode plates are arranged on the cutting parts, the cutter bodies are integrally bent in an arc shape, and the electrode plates are arranged on the cutter bodies. The face, making contact with the tissue cutting face, of the cutter body is a front face, the other face of the cutter body is a back face, the arc bending direction of the cutter body faces the back face, and when the front face of the cutting part is attached to the tissue cutting face, one part makes contact with the tissue cutting face, and a space is formed between the other part and the tissue cutting face. The cutting part is bent at an arc angle, and a tangency point is closer to rectum tissue, so that the contact area with normal tissue is reduced, and a better visual field is provided for an operation area. Space exists between the front face of the cutting part and the tissue cutting face, the contact area of the front face of the cutter body and the tissue cutting face is reduced, and therefore heat transferred to non-target tissue by the cutting edge is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a radiofrequency bipolar shear for the treatment of hemorrhoids. Background Technology

[0002] Currently, the most common treatments for hemorrhoids are skin banding and radiofrequency ablation. Skin banding involves placing a skin band around the base of the hemorrhoid, using the band's elasticity to prevent blood from flowing into the hemorrhoid, which then falls off on its own after several weeks. Radiofrequency ablation involves inserting a needle into the hemorrhoid and emitting radiofrequency energy to ablate it, causing the hemorrhoid to shrink and stop bleeding.

[0003] Leather banding can take several weeks for hemorrhoids to fall off, and the bands are prone to detachment. The treatment process is slow, and patients experience a poor experience during these weeks. Radiofrequency ablation requires inserting a needle into the hemorrhoid, which can cause bleeding and leaves a wound after the procedure. Patients often experience severe postoperative bowel movements, and for patients with severe tissue prolapse, it may be impossible to remove excess tissue.

[0004] Existing treatments utilize radiofrequency bipolar shears for hemorrhoids. These shears can directly clamp the root of the hemorrhoid tissue, coagulate and cut it, offering advantages such as rapid treatment and minimal bleeding. However, the existing radiofrequency bipolar shears have an excessively wide tip. The width of the coagulated area is typically 3-4 mm. Since hemorrhoids connect to the rectum or anal canal, which are relatively thin, an excessively wide coagulated area can result in an excessively large tissue stump or deep thermal damage, potentially leading to anal fissures or perianal stenosis later. Furthermore, the electrode closure width between the two electrodes is only 2-4 mm, making it unsuitable for cases with minimal tissue growth. Additionally, existing radiofrequency bipolar shears have a reciprocating cutting blade in the center of the jaws, which is used to sever the coagulated tissue, making the operation complex. Utility Model Content

[0005] The purpose of this invention is to provide a radiofrequency bipolar shear for the treatment of hemorrhoids, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the specific technical solution of this utility model for a radiofrequency bipolar shear used in the treatment of hemorrhoids is as follows:

[0007] A radiofrequency bipolar shear for treating hemorrhoids includes two blades arranged opposite each other to clamp the tissue. The opposite side of the two blades is a cutting section with electrode plates. The blades are curved in an arc shape. The side of the blade that contacts the tissue cutting surface is the front side, and the other side is the back side. The arc-shaped curvature of the blades faces the back side. When the front side of the blade is in contact with the tissue cutting surface, a portion of it contacts the tissue cutting surface, while a space is created between the other portion and the tissue cutting surface.

[0008] Furthermore, the front of the blade is a bevel A, and the front of the blade forms an angle α with the tissue cutting surface. The two bevels A of the blade form an inward angle β.

[0009] Furthermore, the other end of each of the two blades is connected to a handle, and the two blades are clamped together by the handle to achieve the fit of the cutting parts.

[0010] Furthermore, the two blades are connected to the two handles respectively to form scissor arms, which are arranged crosswise and connected by a hinge at the intersection.

[0011] Furthermore, the handle portion has a cavity for wires to pass through, and the electrode plate is connected to an external energy generator via wires.

[0012] Furthermore, the width of the cutting portion is less than 10 mm.

[0013] Furthermore, the width of the cutting portion is 0.5 mm.

[0014] Furthermore, when the cutting parts are in contact, there is still a gap I between the handle parts of the two blades.

[0015] Furthermore, the cutting part has a heat-insulating coating.

[0016] This invention relates to a radiofrequency bipolar shear for hemorrhoid treatment, which offers the following advantages: The structure of the radiofrequency bipolar shear is improved for hemorrhoid treatment, with the cutting section dimensions designed specifically for the characteristics of hemorrhoidal tissue. The coagulation zone is located only between the two cutting sections, resulting in a width of only 0.5-1mm. The cutting section is curved at an arc angle, bringing the cutting point closer to the rectal tissue, reducing the contact area with normal tissue while providing a better surgical field. When the front of the cutting section is in contact with the tissue cutting surface, a portion contacts the tissue cutting surface, while a space is created between the other portion and the tissue cutting surface, reducing the contact area between the blade and the tissue cutting surface, thereby minimizing heat transfer to non-target tissues. The cutting section employs a heat-insulating coating design; except for the tissue temperature between the two cutting sections exceeding 50℃, the temperature of the tissue in contact with the cutting section is below 50℃, reducing thermal damage to non-target tissues. The improved radiofrequency bipolar shear is better suited for hemorrhoid treatment, reducing complications and improving surgical outcomes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the radiofrequency bipolar shear structure for treating hemorrhoids according to this utility model.

[0018] Figure 2 This is a schematic diagram of the side structure of the radiofrequency bipolar shear for hemorrhoid treatment according to the present invention.

[0019] Figure 3This is a schematic diagram of the arc-shaped cutting part structure of this utility model in use.

[0020] Figure 4 This is a schematic diagram showing the cutting section of this utility model with an oblique angle in use;

[0021] Figure 5 This is a schematic diagram of the gap I between the handles of this utility model;

[0022] Figure 6 This is a schematic diagram of the beveled structure on the front of the cutting part of this utility model;

[0023] The markings in the diagram are as follows: 1. Scissor arm; 11. Blade body; 111. Cutting part; 12. Handle part; 2. Hinge. Detailed Implementation

[0024] To better understand the purpose, structure, and function of this utility model, the following detailed description of a radiofrequency bipolar shear for hemorrhoid treatment, in conjunction with the accompanying drawings, is provided.

[0025] like Figure 1 As shown, this utility model discloses a radiofrequency bipolar shear for treating hemorrhoids, comprising two blades 11 and a handle 12. The two blades 11 are arranged opposite each other to clamp the tissue. The opposite side of the blades 11 is a cutting section 111, which has electrode plates. The two blades 11 are clamped by the handle 12 to achieve the fit of the cutting section. In this embodiment, the two blades 11 are respectively connected to the two handles 12 to form scissor arms 1. The two scissor arms 1 are arranged crosswise, and the intersection point is connected by a hinge 2. The handle 12 has a cavity for wires to pass through. The electrode plates are connected to an external energy generator through wires. The energy generator guides current between the two electrode plates. The current flows through the tissue between the electrode plates, and the tissue's own impedance heats the clamped tissue, closing the blood vessels supplying the hemorrhoids under the action of heat. At the same time, the handle 12 applies force in opposite directions, causing the two electrode plates to press the tissue tightly. The additional pressure and current sever the tissue.

[0026] This device is used in conjunction with a rectal dilator, which is inserted into the anus for manipulation. To expand the field of vision, such as... Figure 3As shown, the blade 11 of this invention has an arc-shaped design. The side of the blade 11 that contacts the tissue cutting surface is the front, and the other side is the back. The arc-shaped curvature of the blade 11 faces the back, making the contact area between the front of the blade 11 and the tissue cutting surface smaller. This reduces the white coagulation zone after tissue coagulation, minimizes surgical damage to normal tissue, and shortens recovery time. When the device is inserted into the anus for operation, the arc-shaped curvature of the blade 11 allows the handle 12 to tilt to one side, enabling the handle 12 to move within a certain angle range. While the handle 12 adjusts its angle, the blade 11 remains firmly in contact with the tissue cutting surface, thus providing the operator with a wider field of vision.

[0027] The dimensions of the cutting part 111 are designed according to the characteristics of hemorrhoid tissue. The cutting part 111 is designed with a narrow cutting edge and the width of the cutting part 111 is less than 10mm, preferably 0.5mm.

[0028] To prevent the heat generated during use by the cutting part 111 from transferring heat to non-target tissue, when the front side of the blade is in contact with the tissue cutting surface, a portion of it is in contact with the tissue cutting surface, while a space is created between the other portion and the tissue cutting surface. In this embodiment, as... Figure 4 Figure 6 As shown, the front of the blade 11 has an angle α with the tissue cutting surface, that is, the front of the blade 11 has two inclined surfaces A, and the two inclined surfaces A form an inward included angle β, which reduces the contact area between the front of the blade 11 and the tissue cutting surface, thereby reducing the heat transfer from the cutting part 111 to the non-target tissue.

[0029] like Figure 5 As shown, when the cutting part 111 of the blade body 11 is naturally and completely closed, there is still a certain gap I between the handle parts 12 of the scissor arms 1. The handle parts 12 are made of plastic. As the electrocoagulation process continues, the tissue moisture evaporates and the target tissue continues to thin. Continuously pressing the handle parts 12 can obtain additional pressure on the cutting edge. Finally, under the action of high-frequency current and the additional pressure of the handle parts 12 (continuously pressing the handle parts 12, the plastic handle parts 12 deforms to provide additional pressure, and because the gap between the two scissor arms 1 when the handle parts 12 are closed is consistent, each press can provide stable pressure when the two scissor arms 1 deform and contact), the tissue is severed.

[0030] The cutting part 111 has a heat-insulating coating, which can further limit the heat diffusion of non-target area tissue.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A radio frequency bipolar scissors for hemorrhoid treatment, comprising two knife bodies (11) oppositely arranged and capable of clamping tissue, and the opposite side of the two knife bodies (11) is a cutting part (111) provided with an electrode sheet, characterized in that, The cutter body (11) is arc-shaped, one side of the cutter body (11) is a front side, the other side is a back side, the arc-shaped direction of the cutter body (11) is towards the back side, when the front side of the cutter body (11) is attached to the tissue cutting surface, a part of the front side is in contact with the tissue cutting surface, and a space is formed between the other part of the front side and the tissue cutting surface.

2. The radio frequency bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, The front side of the cutter body (11) is an inclined surface A, the front side of the cutter body (11) forms an inclined angle α with the tissue cutting surface, and the inclined surfaces A of the two cutter bodies (11) form an inward included angle β.

3. The RF bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, The other ends of the two cutter bodies (11) are connected to handle portions (12), and the two cutter bodies (11) are attached by clamping of the handle portions (12).

4. The RF bipolar scissors for hemorrhoid treatment according to claim 3, characterized in that, The two cutter bodies (11) are connected to two handle portions (12) respectively, forming scissors arms (1), and the two scissors arms (1) are crossly arranged and connected by a hinge (2) at a cross point.

5. The RF bipolar scissors for hemorrhoid treatment according to claim 3, wherein, The handle portion (12) has a cavity for a wire to pass through, and the electrode sheet is connected to an external energy generator through the wire.

6. The RF bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, The width of the cutting portion (111) is less than 10 mm.

7. The RF bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, The width of the cutting portion (111) is 0.5 mm.

8. The RF bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, When the cutting portion (111) is attached, there is still a gap I between the handle portions (12) of the two cutter bodies (11).

9. The RF bipolar scissors for hemorrhoid treatment according to claim 1, characterized in that, The cutting portion has a coating with heat insulation function.

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