Medical knife and ultrasonic cutting hemostasis knife

Abstract

The utility model discloses a medical cutter and an ultrasonic cutting hemostasis knife, and relates to the technical field of medical instruments, the medical cutter is applied to the ultrasonic cutting hemostasis knife, and the medical cutter comprises a cutter head; the first temperature indicating structure is fixedly arranged on at least one face of the tool bit, the first temperature indicating structure is configured to change color along with temperature change in a reversible mode, and the temperature of the first temperature indicating structure generating color change is a first preset temperature. According to the technical scheme provided by the utility model, the possibility that normal tissues are scalded when the ultrasonic cutting hemostasis knife is used is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical cutting knife and an ultrasonic cutting hemostatic knife. Background Technology

[0002] An ultrasonic scalpel uses an ultrasonic transducer to drive the scalpel head to vibrate at high frequency, thereby achieving functions such as tissue cutting or blood vessel closure.

[0003] During the operation of an ultrasonic scalpel, the temperature of the scalpel head rises due to its high-frequency reciprocating vibration. After prolonged use, the head temperature may exceed 100°C, and the highest temperature may reach 200°C. For example, in an ultrasonic cutting hemostatic scalpel with a chuck and a blade, after the blade and chuck work together to cut the tissue, the highest temperature of the blade is 157°C, and the temperature of the chuck near the cutting point is 78°C; after 5 seconds, the highest temperature of the blade is 99°C, and the temperature of the chuck near the cutting point is 75°C; after 10 seconds, the highest temperature of the blade is 78°C, and the temperature of the chuck near the cutting point is 64°C. During these time periods, the temperatures of both the chuck and the blade are relatively high.

[0004] When the temperature of the ultrasonic scalpel tip is high, it can easily cause burns if the tip accidentally comes into contact with the patient's or user's normal tissue. Utility Model Content

[0005] The main purpose of this invention is to provide a medical cutting tool and an ultrasonic cutting hemostatic knife, which aims to reduce the possibility of burning normal tissue during the use of the ultrasonic cutting hemostatic knife.

[0006] To achieve the above objectives, the medical cutting tool proposed in this utility model is applied to an ultrasonic cutting hemostatic knife, the medical cutting tool comprising:

[0007] Blade tip; and

[0008] A first temperature-indicating structure is fixedly disposed on at least one side of the blade head. The first temperature-indicating structure is configured to change color reversibly with temperature changes, and the temperature at which the first temperature-indicating structure produces a color change is a first preset temperature.

[0009] In one embodiment, the cutting head includes a cutting shank and a chuck, the chuck having a rotation center and being rotatable relative to the cutting shank about the rotation center, so that the chuck opens and closes relative to the cutting shank;

[0010] At least one of the tool holder and the chuck is provided with the first temperature indication structure.

[0011] In one embodiment, the tool holder and / or the chuck are provided with a receiving groove and a sealing structure to close the receiving groove, the first temperature indicator structure is disposed inside the receiving groove, and the sealing structure is a transparent structure.

[0012] In one embodiment, the receiving slot is disposed on the side wall of the chuck; and / or,

[0013] The receiving groove is located on the top wall of the chuck away from the tool holder; and / or,

[0014] The receiving groove is provided on at least one side wall of the chuck.

[0015] In one embodiment, the first temperature-indicating structure includes a temperature-indicating layer, which is wrapped around the outer surface of the blade.

[0016] In one embodiment, the first preset temperature is 40°C to 60°C.

[0017] In one embodiment, the medical cutting tool further includes a second temperature-indicating structure, which is disposed on the cutting head and adjacent to the first temperature-indicating structure. The second temperature-indicating structure is configured to change color reversibly with temperature changes. The temperature at which the second temperature-indicating structure produces a color change is a second preset temperature, which is greater than the first preset temperature.

[0018] In one embodiment, the second preset temperature is greater than or equal to 60°C.

[0019] In one embodiment, the medical knife further includes a blade tube connected to the blade head, and the blade tube is provided with the first temperature indication structure.

[0020] This utility model also proposes an ultrasonic cutting hemostatic knife, including the above-mentioned medical knife.

[0021] The medical cutting tool of this utility model includes a cutting head and a first temperature-indicating structure. The first temperature-indicating structure is located on the cutting head and is made of a reversible temperature-indicating material. The first temperature-indicating structure can change color with temperature changes, and this color change is reversible, that is, when the temperature returns to its original state, the color of the first temperature-indicating structure can also return to its original color. During the operation of the ultrasonic cutting hemostatic knife, the high-frequency vibration causes the temperature of the cutting head to rise, and the temperature of the first temperature-indicating structure on the cutting head will also rise. When a first preset temperature is reached, the color of the first temperature-indicating structure changes, allowing the user to intuitively observe the temperature change of the cutting head during the operation. This avoids burns to normal tissue due to excessively high temperatures or failure to achieve the coagulation function due to excessively low temperatures, which helps to ensure that the temperature of the cutting head is within a safe range during the operation and improves the safety of the operation. In addition, after the operation, observing whether the color of the first temperature-indicating structure has returned to normal also helps to understand whether the cutting head has cooled down, improving the safety of the user when handling the medical cutting tool. Compared to solutions that use temperature sensors and displays to show temperature, this solution requires fewer components, has a simpler structure, reduces production costs, and the color change is more likely to attract user attention and is easier to identify than the numerical change, resulting in a better prompting effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the medical cutting tool provided by this utility model. Figure 1 ;

[0024] Figure 2 A cross-sectional view of an embodiment of the medical cutting tool provided by this utility model;

[0025] Figure 3 A schematic diagram of the structure of an embodiment of the medical cutting tool provided by this utility model. Figure 2 ;

[0026] Figure 4 A schematic diagram of the chuck of the medical cutting tool provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Cutting head; 101. Cutting shank; 102. Chuck;

[0029] 200. First temperature indication structure;

[0030] 300. Sealed structure;

[0031] 400. Knife tube.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This utility model proposes a medical cutting tool.

[0038] Please see Figures 1 to 2 , Figure 1 A schematic diagram of the structure of an embodiment of the medical cutting tool provided by this utility model. Figure 1 , Figure 2 A cross-sectional view of an embodiment of the medical cutting tool provided by this utility model.

[0039] In one embodiment of this utility model, the medical cutting tool includes:

[0040] Blade 100; and

[0041] A first temperature indicator structure 200 is fixedly disposed on at least one side of the cutter head 100. The first temperature indicator structure 200 is configured to change color in a reversible manner with temperature changes. The temperature at which the first temperature indicator structure 200 produces a color change is a first preset temperature.

[0042] The medical cutting tool in the technical solution of this utility model includes a cutting head 100 and a first temperature-indicating structure 200. The first temperature-indicating structure 200 is disposed on the cutting head 100 and is made of a reversible temperature-indicating material. The first temperature-indicating structure 200 can change color with the change of temperature, and this color change is reversible, that is, when the temperature returns to the original state, the color of the first temperature-indicating structure 200 can also return to the original color. During the operation of the ultrasonic cutting hemostatic scalpel, high-frequency vibration causes the temperature of the cutting head 100 to rise, and the temperature of the first temperature-indicating structure 200 on the cutting head 100 also rises. When the first preset temperature is reached, the color of the first temperature-indicating structure 200 changes, allowing the user to intuitively observe the temperature change of the cutting head 100 during the operation. This prevents burns to normal tissue due to excessively high temperatures or failure to achieve the coagulation function due to excessively low temperatures, ensuring that the temperature of the cutting head 100 remains within a safe range during the operation and improving surgical safety. Furthermore, after the operation, observing whether the color of the first temperature-indicating structure 200 returns to normal also helps to determine whether the cutting head 100 has cooled down, improving the user's safety when handling medical instruments. Compared to solutions that use temperature sensors and displays to show the temperature, this solution requires fewer components, has a simpler structure, reduces production costs, and the color change is more likely to attract the user's attention and is easier to identify than a numerical change, providing a better indication effect.

[0043] In one embodiment, the cutter head 100 includes a cutter bar 101 and a collet 102. The collet 102 has a rotation center and can rotate relative to the cutter bar 101 about the rotation center so that the collet 102 can open and close relative to the cutter bar 101.

[0044] At least one of the tool holder 101 and the chuck 102 is provided with a first temperature indication structure 200.

[0045] In an embodiment of this utility model, the blade 100 includes a blade 101 for cutting and a clamp 102 that cooperates with the blade 101 to achieve blood vessel coagulation. The first temperature indicator structure 200 may be provided only on the blade 101, or only on the clamp 102, or both the blade 101 and the clamp 102 may be provided with the first temperature indicator structure 200, thereby displaying the temperature change of the corresponding blade 100 and improving the safety of the user when using the ultrasonic cutting hemostatic knife.

[0046] In one embodiment, the tool holder 101 and / or the chuck 102 are provided with a receiving groove and a sealing structure 300 for closing the receiving groove. The first temperature indicator structure 200 is located inside the receiving groove, and the sealing structure 300 is a transparent structure.

[0047] In this embodiment of the invention, a receiving groove is provided on the blade 100, and the first temperature-indicating structure 200 is housed inside the receiving groove. The receiving groove is then sealed by a sealing structure 300 made of transparent material. This allows the user to observe the color change of the first temperature-indicating structure 200 through the transparent sealing structure 300, while avoiding increasing the size of the blade 100. Furthermore, the first temperature-indicating structure 200 hidden within the receiving groove is protected by the blade 100, reducing the possibility of damage to the first temperature-indicating structure 200. The sealing structure 300 can be made of materials such as transparent silicone or photosensitive adhesive. The specific material of the first reversible temperature indicator is not limited here, as long as it meets the functional requirements. For example: [(C2H5)2NH2]2CuCl4, color change temperature 43℃, that is, when using this material, the first preset temperature is 43℃, and the color can reversibly change between green and yellow; [(CH3)2CHNH2]CuCl3, color change temperature 52℃, that is, when using this material, the first preset temperature is 52℃, the color is brown below 52℃, and orange at 52℃ and above.

[0048] In one embodiment, a receiving slot is provided on the side wall of the chuck 102; and / or,

[0049] A receiving slot is provided on the top wall of the chuck 102 away from the tool holder 101; and / or,

[0050] At least one side wall of the chuck 102 is provided with a receiving groove.

[0051] Combination Figures 2 to 4In this embodiment of the invention, the chuck 102 has a bottom wall facing the blade shank 101 and a top wall away from the blade shank 101, and two opposing side walls, each side wall connecting the bottom wall and the top wall. A receiving groove can be provided on either the top wall or the side wall for user observation. Specifically, in this embodiment, receiving grooves are provided on both opposing side walls of the chuck 102. Each receiving groove contains a first temperature-indicating structure 200 and a sealing structure 300. Even if the medical blade is at different angles and orientations, the user can still observe the first temperature-indicating structure 200, improving the convenience of observation. Furthermore, the chuck 102 is generally thinner in the thickness direction and wider in the width direction. Setting the receiving groove on the side wall has minimal impact on the strength of the chuck 102, which helps ensure the service life of the medical blade.

[0052] In one embodiment, the first temperature-indicating structure 200 includes a temperature-indicating layer (not shown in the figure) that wraps around the outer surface of the blade head 100.

[0053] In this embodiment of the invention, the first temperature-indicating structure 200 includes a temperature-indicating layer. This layer can be coated or adhered to the outer surface of the blade 100, making manufacturing easier, having less impact on the blade 100's structure, and facilitating modification of existing blades. Specifically, in this embodiment, the medical blade is used in an ultrasonic cutting hemostatic knife. The temperature-indicating layer can be wrapped around the outside of the blade shank 101 or the outside of the chuck 102. When the temperature-indicating layer is wrapped around the outside of the blade shank 101, it can be wrapped around the end of the blade shank 101 closest to the blade tube 400 to prevent the temperature-indicating layer from affecting the cutting performance of the blade shank 101. In this embodiment, since the temperature-indicating layer will come into contact with tissue, the biocompatibility of the first reversible temperature-indicating material must also be considered. Therefore, the first reversible temperature-indicating material can be a mixture of [(C2H5)2NH2]2CuCl4 and Teflon, or a mixture of [(CH3)2CHNH2]CuCl3 and Teflon. When the temperature-indicating layer is wrapped around the outside of the clamp 102, the clamp 102 vibrates less. The first reversible temperature-indicating material can also be a reversible temperature-indicating material formulated with cobalt ammonium salt (COCl2·2C6HI2N4·10H2O) as the color-changing substance, water-soluble alkyd resin as the base material, and inorganic non-metallic material (talc) as the filler. It can achieve reversible color change of pink and blue. This material can achieve different color-changing temperatures by different ratios. For example, when the mass ratio of base material, pigment, and filler is 4:2:4, the color-changing temperature (i.e., the first preset temperature) is 50.5℃ to 52℃; when the mass ratio of base material, pigment, and filler is 4:3:3, the color-changing temperature is 50.5℃ to 51.5℃.

[0054] In one embodiment, the first preset temperature is 40°C to 60°C.

[0055] In embodiments of this invention, the temperature range for protein denaturation is typically between 40°C and 60°C, with the specific temperature depending on the type of protein and external conditions. Generally, proteins begin to denature above 40°C and undergo significant denaturation above 60°C. Therefore, setting the first preset temperature range to 40°C–60°C (e.g., 40°C, 50°C, 60°C, etc.) is more conducive to preventing damage to normal tissue caused by excessively high temperatures of the blade 100.

[0056] In one embodiment, the medical cutting tool further includes a second temperature-indicating structure (not shown in the figure). The second temperature-indicating structure is disposed on the cutting head 100 and adjacent to the first temperature-indicating structure 200. The second temperature-indicating structure is configured to change color reversibly with temperature changes. The temperature at which the second temperature-indicating structure produces a color change is a second preset temperature, which is greater than the first preset temperature.

[0057] In an embodiment of this invention, the medical cutting tool further includes a second temperature-indicating structure, positioned adjacent to the first temperature-indicating structure 200. The second temperature-indicating structure is made of a second reversible temperature-indicating material, which also changes color with temperature, and this color change is reversible. Since the second preset temperature is higher than the first preset temperature, the second temperature-indicating structure will produce a color change at a higher temperature, achieving dual temperature detection. By setting two different temperature-indicating structures, the user can intuitively see the temperature range of the cutting tool, providing more comprehensive temperature information and further improving the safety of the surgery.

[0058] In one embodiment, the second preset temperature is greater than or equal to 60°C.

[0059] In this embodiment of the invention, since proteins denature significantly above 60°C, the range of the second preset temperature is set to be greater than or equal to 60°C (e.g., 60°C, 65°C, 70°C, etc.). When the second temperature indicator changes color, it indicates that the temperature of the blade 100 is greater than or equal to 60°C, which more intuitively reminds the user to avoid touching the patient's normal tissue with the blade 100, thereby further improving the safety of the surgery.

[0060] In one embodiment, the medical knife also includes a knife tube 400 connected to the knife head 100, and the knife tube 400 is provided with a first temperature indication structure 200.

[0061] In an embodiment of this utility model, a first temperature indicator structure 200 can also be provided on the blade tube 400 connected to the blade head 100. When the heat transferred from the blade head 100 to the blade tube 400 has already been attenuated to a certain extent, if the first temperature indicator structure 200 on the blade tube 400 changes color, it indicates that the temperature of the blade head 100 is higher and that there is also a risk of burns from the blade tube 400. This not only reminds the user to avoid touching normal tissue with the blade head 100, but also reminds the user not to touch the blade tube 400, thus improving the safety of the user when using medical instruments.

[0062] This utility model also proposes an ultrasonic cutting hemostatic knife, including the aforementioned medical knife. The specific structure of this medical knife is as described in the above embodiments. Since this ultrasonic cutting hemostatic knife adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0063] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A medical knife applied to an ultrasonic cutting hemostatic knife, characterized in that, The medical cutter comprises: a cutter head; and a first temperature indicating structure fixedly arranged on at least one surface of the cutter head, the first temperature indicating structure being configured to reversibly change color with temperature change, and the first temperature indicating structure changes color at a first preset temperature.

2. The medical cutting tool of claim 1 wherein, The cutter head comprises a cutter rod and a chuck, the chuck has a rotation center, and the chuck is rotatable relative to the cutter rod about the rotation center to open and close the chuck relative to the cutter rod. At least one of the cutter rod and the chuck is provided with the first temperature indicating structure.

3. The medical cutting tool of claim 2 wherein, The cutter rod and / or the chuck is provided with a receiving groove and a sealing structure sealing the receiving groove, the first temperature indicating structure is arranged inside the receiving groove, and the sealing structure is a transparent structure.

4. The medical cutting tool of claim 3 wherein, The receiving groove is arranged on a side wall of the chuck; and / or The receiving groove is arranged on a top wall of the chuck away from the cutter rod; and / or At least one side wall of the chuck is provided with the receiving groove.

5. The medical cutting tool of claim 1 wherein, The first temperature indicating structure comprises a temperature indicating layer wrapped on an outer surface of the cutter head.

6. The medical cutting tool of any one of claims 1 to 5, wherein The first preset temperature is 40-60°C.

7. The medical cutting tool of claim 1 wherein, The medical cutter further comprises a second temperature indicating structure arranged on the cutter head and adjacent to the first temperature indicating structure, the second temperature indicating structure is configured to reversibly change color with temperature change, and the second temperature indicating structure changes color at a second preset temperature greater than the first preset temperature.

8. The medical cutting tool of claim 7 wherein, The second preset temperature is greater than or equal to 60°C.

9. The medical cutting tool of claim 1 wherein, The medical cutter further comprises a cutter tube connected to the cutter head, and the cutter tube is provided with the first temperature indicating structure.

10. An ultrasonic cutting hemostasis knife, characterized by, The medical cutter comprises the medical cutter according to any one of claims 1-9.

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