Microwave cutting blood coagulation forceps and medical equipment

Abstract

The utility model relates to the technical field of medical instruments, and discloses microwave cutting blood coagulation forceps and medical equipment. The microwave cutting blood coagulation forceps comprise a microwave cutting blood coagulation forceps body, the microwave cutting blood coagulation forceps body comprises a forceps body, a jaw assembly and a microwave cable, the jaw assembly is arranged at the output end of the forceps body, and the jaw assembly comprises a first forceps head and a second forceps head which can be opened and closed; a groove is formed in one of the opposite side walls of the first clamp head and the second clamp head, the microwave cable penetrates through the clamp body and is arranged in the groove, the microwave cable comprises a cable core, and the cable core is used for transmitting microwave energy between the first clamp head and the second clamp head. The mode of combining microwave heating with the pressure of clamping of the jaw assembly is adopted, so that the microwave blood coagulation forceps can be applied to cutting and blood coagulation of lean meat tissue or adipose tissue, the application range is wide, and almost no tissue adhesion phenomenon exists.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a microwave cutting hemostatic forceps and a medical device. Background Art

[0002] During surgery, when using a blade to cut biological tissue, the blood vessels in the biological tissue may be damaged or ruptured. In the prior art, radio frequency energy is often used to cut biological tissue, and the method of using radio frequency energy for cutting operates based on the following principle: when an electric current (aided by ionic cell contents) passes through the tissue matrix, heat is generated throughout the tissue due to the impedance to the electron flow. When a pure sine wave is applied to the tissue matrix, sufficient heat is generated inside the cells to evaporate the moisture in the tissue. As a result, there is a sharp increase in the internal cell pressure that cannot be controlled by the cell membrane, leading to the rupture of the cells. When this occurs over a large area, it can be foreseen that the tissue will be cut off. Using radio frequency energy for cutting works well in lean tissue. However, when using radio frequency energy to cut adipose tissue, the efficiency of radio frequency coagulation is low because there are fewer ionic components to assist the passage of electrons, and the electric field effect has been weakened. Therefore, it is difficult to seal the bleeding in adipose tissue, and radio frequency cutting and hemostasis require electrical conduction through contact between a metal forceps and the tissue. Therefore, during cutting and hemostasis, adhesion is relatively severe.

[0003] Based on this, there is an urgent need for a microwave cutting hemostatic forceps and a medical device to solve the above problems. Summary of the Utility Model

[0004] Based on the above, the purpose of the utility model is to provide a microwave cutting hemostatic forceps and a medical device, which can be applied to the cutting and coagulation of lean tissue or adipose tissue by combining microwave heating with the pressure of the jaw assembly clamping, has a wide application range, and almost no tissue adhesion phenomenon.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] On the one hand, a microwave cutting hemostatic forceps is provided, including:

[0007] A clamp body;

[0008] A jaw assembly, the jaw assembly is arranged at the output end of the clamp body, and the jaw assembly includes a first jaw and a second jaw that can be opened and closed;

[0009] A microwave cable, one of the opposite side walls of the first jaw and the second jaw is provided with a groove, the microwave cable passes through the clamp body and is arranged in the groove, and the microwave cable includes a core, and the core is used to emit microwave energy between the first jaw and the second jaw.

[0010] As a preferred technical solution of a microwave cutting coagulation forceps, the microwave cable further includes a shielding layer, the shielding layer covers the wire core, and a microwave radiation window is provided on a side of the shielding layer away from the bottom of the groove.

[0011] As a preferred technical solution of a microwave cutting coagulation forceps, the microwave cutting coagulation forceps further includes a tissue pad, the tissue pad seals the opening of the groove, and the microwave energy can penetrate the tissue pad.

[0012] As a preferred technical solution of a microwave cutting coagulation forceps, the clamp body is provided with an outer tube, and the jaw assembly is arranged at the end of the outer tube.

[0013] As a preferred technical solution of a microwave cutting coagulation forceps, the first jaw is fixedly connected to the end of the outer tube, and the end of the second jaw is hinged to the end of the outer tube so that the second jaw can open and close relative to the first jaw, and the groove is arranged on the first jaw.

[0014] As a preferred technical solution of a microwave cutting coagulation forceps, a pressing strip extending along the length direction of the second jaw is arranged on a side wall of the second jaw facing the first jaw, and one end of the pressing strip close to the first jaw is arc-shaped.

[0015] As a preferred technical solution of a microwave cutting coagulation forceps, the end face of the end of the outer tube is a microwave reflecting surface.

[0016] As a preferred technical solution of a microwave cutting coagulation forceps, the material of the tissue pad and / or the pressing strip is polytetrafluoroethylene.

[0017] As a preferred technical solution of a microwave cutting coagulation forceps, the clamp body is further provided with a handle trigger, and the handle trigger is used to control the opening and closing of the first jaw and the second jaw.

[0018] On the other hand, a medical device is provided, including the microwave cutting coagulation forceps according to any one of the above solutions.

[0019] The beneficial effects of the present utility model are:

[0020] The present utility model provides a microwave cutting hemostatic forceps and a medical device. The microwave cable is threaded through the clamp body and arranged in the groove, realizing the fixation of the microwave cable in the jaw assembly and preventing the microwave cable from detaching from the jaw assembly. During operation, the first jaw and the second jaw are in an open state. The first jaw and the second jaw move to both sides of the tissue to be cut and hemostatized, and then the first jaw and the second jaw close to clamp the tissue to be cut and hemostatized. The wire core emits microwave energy to the tissue to be cut and hemostatized between the first jaw and the second jaw. After the tissue to be cut and hemostatized receives the microwave, it generates heat, and the tissue protein and blood vessels coagulate and gasify. Under the clamping pressure of the first jaw and the second jaw, the tissue to be cut and hemostatized separates. Furthermore, the microwave energy can also radiate to both sides through the gap between the first jaw and the second jaw. Therefore, while the tissue to be cut and hemostatized is being cut, the two sides of the tissue to be cut and hemostatized generate heat after receiving the microwave radiation, causing the protein to denature and coagulating the blood vessels, reducing the amount of bleeding. The present utility model combines microwave heating with the clamping pressure of the jaw assembly, can be applied to the cutting and coagulation of lean tissue or adipose tissue, has a wide application range, and there is almost no tissue adhesion phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.

[0022] Figure 1 is a schematic structural diagram of the microwave cutting hemostatic forceps provided by the specific embodiment of the present utility model;

[0023] Figure 2 is a cross-sectional view of the position of the jaw assembly provided by the specific embodiment of the present utility model;

[0024] Figure 3 is one of the partial structural schematic diagrams of the microwave cutting hemostatic forceps provided by the specific embodiment of the present utility model;

[0025] Figure 4 is the second of the partial structural schematic diagrams of the microwave cutting hemostatic forceps provided by the specific embodiment of the present utility model.

[0026] The reference numerals in the drawings are as follows:

[0027] 1. Clamp body; 11. Outer tube; 111. Microwave reflecting surface; 12. Handle trigger;

[0028] 2. Jaw assembly; 21. First jaw; 211. Groove; 22. Second jaw; 221. Press strip;

[0029] 3. Microwave cable; 31. Core; 32. Shielding layer; 321. Microwave radiation window;

[0030] 4. Tissue pad; 5. Microwave generator. Detailed implementation mode

[0031] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left", and "right" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] Such as Figure 1 And Figure 2As shown in the figure, this embodiment provides a medical device, including a microwave cutting and coagulation forceps, which includes a clamp body 1, a jaw assembly 2 and a microwave cable 3. The jaw assembly 2 is arranged at the output end of the clamp body 1. The jaw assembly 2 includes a first jaw 21 and a second jaw 22 that can be opened and closed; a groove 211 is provided on one of the opposite side walls of the first jaw 21 and the second jaw 22. The microwave cable 3 passes through the clamp body 1 and is arranged in the groove 211. The microwave cable 3 includes a core 31, and the core 31 is used to emit microwave energy between the first jaw 21 and the second jaw 22.

[0036] Among them, the microwave cable 3 passes through the clamp body 1 and is arranged in the groove 211, which realizes the fixation of the microwave cable 3 in the jaw assembly 2 and prevents the microwave cable 3 from detaching from the jaw assembly 2. During operation, the first jaw 21 and the second jaw 22 are in an open state. The first jaw 21 and the second jaw 22 move to both sides of the tissue to be cut and coagulated. Then the first jaw 21 and the second jaw 22 close to clamp the tissue to be cut and coagulated. The core 31 emits microwave energy to the tissue to be cut and coagulated between the first jaw 21 and the second jaw 22. After the tissue to be cut and coagulated receives the microwave energy, it heats up, and the tissue protein and blood vessels coagulate and vaporize. Under the clamping pressure of the first jaw 21 and the second jaw 22, the tissue to be cut and coagulated separates. Furthermore, the microwave energy can also radiate to both sides through the gap between the first jaw 21 and the second jaw 22. Therefore, while the tissue to be cut and coagulated is being cut, the two sides of the tissue to be cut and coagulated heat up due to receiving microwave radiation, causing protein denaturation and blood vessel coagulation, reducing blood loss. This embodiment adopts a method combining microwave heating and the clamping pressure of the jaw assembly 2, which can be applied to the cutting and coagulation of lean tissue or adipose tissue, has a wide application range, and almost no tissue adhesion phenomenon.

[0037] Preferably, the microwave cable 3 further includes a shielding layer 32. The shielding layer 32 covers the core 31. A microwave radiation window 321 is provided on the side of the shielding layer 32 away from the bottom of the groove 211. The shielding layer 32 can shield the microwave generated by the core 31. The microwave energy of the core 31 can only be emitted through the microwave radiation window 321, realizing the directional radiation of microwave energy. The microwave can only be reflected between the first jaw 21 and the second jaw 22 and partially radiate out on both sides of the jaw assembly 2, preventing the influence on the parts of the tissue that do not need coagulation. Of course, in other embodiments, the microwave cable 3 may also only include the core 31, which all belong to the protection scope of this embodiment.

[0038] In this embodiment, both the first jaw 21 and the second jaw 22 are made of heat-insulating materials, which can prevent heat diffusion and further prevent the influence on the parts of the tissue that do not need coagulation.

[0039] As preferably, as Figure 2 andFigure 3 As shown, the microwave cutting hemostatic forceps further includes a tissue pad 4. The tissue pad 4 seals the opening of the groove 211, and microwave energy can penetrate the tissue pad 4. By providing the tissue pad 4, it is prevented that the tissue to be cut and hemostatic enters the groove 211 after ablation and contaminates the microwave cable 3, reducing the cleaning difficulty and improving the usability. In this embodiment, the tissue pad 4 is transparent, and microwave energy can pass through the tissue pad 4 to ablate the tissue to be cut and hemostatic.

[0040] Preferably, the clamp body 1 is provided with an outer tube 11, and the jaw assembly 2 is arranged at the end of the outer tube 11. By providing the outer tube 11, the distance between the clamp body 1 and the jaw assembly 2 is increased, and the operating depth of the microwave cutting hemostatic forceps is improved.

[0041] In this embodiment, the first jaw 21 is fixedly connected to the end of the outer tube 11, and the end of the second jaw 22 is hinged to the end of the outer tube 11 so that the second jaw 22 can open and close relative to the first jaw 21, and the groove 211 is arranged on the first jaw 21. This embodiment adopts the design of the single movement of the second jaw 22, allowing the microwave cable 3 to be located in the fixed first jaw 21, and the movable second jaw 22 is used to shield the microwave diffusion. While ensuring the reliability of the use of the microwave cutting hemostatic forceps, the microwave diffusion is prevented from damaging the tissue.

[0042] Preferably, a pressure strip 221 extending along the length direction of the second jaw 22 is arranged on the side wall of the second jaw 22 facing the first jaw 21, and one end of the pressure strip 221 close to the first jaw 21 is arc-shaped. When cutting the tissue to be cut and hemostatic, the pressure strip 221 and the tissue pad 4 press the tissue to be cut and hemostatic. The side of the tissue pad 4 close to the pressure strip 221 is a plane, and the arc-shaped end of the pressure strip 221 is tangent to the tissue pad 4, reducing the contact area between the second jaw 22 and the tissue to be cut and hemostatic, and improving the cutting force applied to the tissue to be cut and hemostatic. Moreover, since both the pressure strip 221 and the tissue pad 4 have a certain thickness, when the pressure strip 221 and the tissue pad 4 are pressed together, there is still a gap between the first jaw 21 and the second jaw 22, so that microwave energy can radiate from between the first jaw 21 and the second jaw 22, causing the blood vessels on both sides of the tissue to be cut and hemostatic to stop bleeding.

[0043] In this embodiment, the cross-section of the pressure strip 221 gradually decreases in width from the end far from the first jaw 21 to the end close to the first jaw 21. The region with a larger cross-sectional width of the pressure strip 221 improves the structural strength between the pressure strip 221 and the second jaw 22.

[0044] Further preferably, the materials of the tissue pad 4 and the pressure strip 221 are polytetrafluoroethylene. After the tissue pad 4 and the pressure strip 221 made of polytetrafluoroethylene ablate the tissue to be cut and hemostatic, they are not easily adhered to the tissue to be cut and hemostatic, reducing the need for continuous cleaning and wiping of the jaw assembly due to adhesion, which affects the normal use of cutting, and improving the use efficiency.

[0045] In this embodiment, the width of the tissue pad 4 is smaller than the width of the first jaw 21 and greater than or equal to the width of the groove 211; the thickness of the tissue pad 4 is greater than or equal to 1 / 4 of the thickness of the groove 211 and less than or equal to 1 / 2 of the thickness of the groove 211. The maximum diameter of the cross-section of the pressing strip 221 is less than or equal to the width of the groove 211. The thickness of the pressing strip 221 is greater than or equal to 1 / 4 of the thickness of the groove 211 and less than or equal to 1 / 2 of the thickness of the groove 211.

[0046] Preferably, as Figure 4 shown, the end face of the outer tube 11 is a microwave reflecting surface 111, and the microwave reflecting surface 111 can prevent microwaves from entering the outer tube 11, causing the normal tissue around the outer tube 11 under the endoscope to be heated by microwave energy and causing serious damage to the normal tissue.

[0047] In this embodiment, as Figure 1 shown, the clamp body 1 is further provided with a handle trigger 12, and the handle trigger 12 is used to control the opening and closing of the first jaw 21 and the second jaw 22. It should be noted that the structure for controlling the opening and closing of the first jaw 21 and the second jaw 22 by the handle trigger 12 is a prior art, and the specific structure and working principle thereof will not be described in detail here.

[0048] Furthermore, the microwave cutting and coagulation forceps further includes a microwave generator 5, the clamp body 1 is provided with a microwave connector, and the microwave generator 5 is electrically connected to the microwave cable 3 through the microwave connector.

[0049] As Figures 1-4 shown, it should be noted that this embodiment also provides the working principle of the microwave cutting and coagulation forceps, which is specifically as follows:

[0050] The first jaw 21 and the second jaw 22 are moved to both sides of the tissue to be cut and hemostatic, the handle trigger 12 is pulled, and then the first jaw 21 and the second jaw 22 are closed, and the pressing strip 221 and the tissue pad 4 press the tissue to be cut and hemostatic; then, the microwave generator 5 is activated to generate microwaves, the microwaves are transmitted to the clamp body 1 through the transmission cable, and are connected to the microwave cable 3 through the microwave connector inside the clamp body 1. The microwaves are transmitted to the jaw assembly 2 through the microwave cable 3 and radiate microwaves to the tissue to be cut and hemostatic between the pressing strip 221 and the tissue pad 4 through the microwave radiation window 321. The tissue to be cut and hemostatic is heated after receiving the microwaves, and the tissue protein and blood vessels coagulate and gasify. Under the pressure between the pressing strip 221 and the tissue pad 4, the tissue to be cut and hemostatic is separated. At the same time, the microwave energy radiates microwaves to both sides from the gap between the first jaw 21 and the second jaw 22, causing the tissue proteins on both sides of the tissue to be cut and hemostatic to denature and coagulate the blood vessels, so that the blood vessels of the tissue to be cut and hemostatic are coagulated while the tissue to be cut and hemostatic is being cut, and the amount of bleeding is controlled.

[0051] Note that the above is only the preferred embodiment of the present utility model and the technical principles applied. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. A microwave cutting hemostatic forceps, characterized in that Comprising: A clamp body (1); A jaw assembly (2), the jaw assembly (2) being disposed at the output end of the clamp body (1), the jaw assembly (2) including a first jaw (21) and a second jaw (22) that can be opened and closed; A microwave cable (3), a groove (211) being provided on one of the opposing side walls of the first jaw (21) and the second jaw (22), the microwave cable (3) passing through the clamp body (1) and being disposed in the groove (211), the microwave cable (3) including a core (31), the core (31) being used to emit microwave energy between the first jaw (21) and the second jaw (22).

2. The microwave cutting hemostatic forceps according to claim 1, wherein The microwave cable (3) further includes a shielding layer (32), the shielding layer (32) covering the core (31), and a microwave radiation window (321) being provided on one side of the shielding layer (32) away from the bottom of the groove (211).

3. The microwave cutting hemostatic forceps according to claim 1, wherein The microwave cutting hemostatic forceps further includes a tissue pad (4), the tissue pad (4) blocking the opening of the groove (211), and the microwave energy being able to pass through the tissue pad (4).

4. The microwave cutting and coagulating forceps according to claim 3, characterized in that The clamp body (1) is provided with an outer tube (11), and the jaw assembly (2) is disposed at the end of the outer tube (11).

5. The microwave cutting and coagulating forceps according to claim 4, characterized in that, The first jaw (21) is fixedly connected to the end of the outer tube (11), and the end of the second jaw (22) is hinged to the end of the outer tube (11) so that the second jaw (22) can open and close relative to the first jaw (21), and the groove (211) is provided on the first jaw (21).

6. The microwave cutting and coagulating forceps according to claim 5, characterized in that, The side wall of the second jaw (22) facing the first jaw (21) is provided with a pressing strip (221) extending along the length direction of the second jaw (22), and one end of the pressing strip (221) close to the first jaw (21) is arc-shaped.

7. The microwave cutting hemostatic forceps according to claim 4, wherein, The end face of the end of the outer tube (11) is a microwave reflecting surface (111).

8. The microwave cutting and coagulating forceps according to claim 6, characterized in that, The material of the tissue pad (4) and / or the pressing strip (221) is polytetrafluoroethylene.

9. The microwave cutting hemostatic forceps according to any one of claims 1-8, characterized in that, The clamp body (1) is further provided with a handle trigger (12), the handle trigger (12) being used to control the opening and closing of the first jaw (21) and the second jaw (22).

10. A medical device, characterized in that, Including the microwave cutting hemostatic forceps according to any one of claims 1-9.

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