A coagulation planer knife having a function of preventing tissue adhesion

Abstract

The utility model relates to a coagulation planer with prevent function of tissue adhesion belongs to medical instrument technical field. The coagulation planer includes outer cutter pipe and inner cutter pipe, the front end of outer cutter pipe is connected with insulating joint, insulating joint is connected with outer cutter head and electrode sleeve respectively, outer cutter head part is accommodated in electrode sleeve and forms water outlet channel between both, and outer cutter head and electrode sleeve form electric coagulation bipolar and the adjacent surface insulation of both, inner cutter pipe is rotatable and is arranged in outer cutter pipe and is provided with inner cutter head in the front end. The coagulation planer provided by the utility model has the function of planing and hemostasis, and forms the water outlet channel for the flow of physiological saline between the electric coagulation bipolar, reaches energy balance under the action of high-frequency current and physiological saline, prevents the energy excessive accumulation of electric coagulation bipolar from causing the bipolar temperature to be too high, scalds the tissue, also prevents the cutter head from being too hot and adheres the tissue.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a coagulation cutter with the function of preventing tissue adhesion. Background Technology

[0002] Peeling surgery is widely used to treat lesions in the sinuses, throat, and joints. The core instrument used in peeling surgery is the razor blade. While razors are fast and efficient, they cause significant tissue bleeding during the cutting process. Hemostasis requires the use of hemostatic forceps and other instruments, and the repeated changing of instruments greatly delays the surgery. If the razor blade had hemostatic capabilities, the surgery time could be significantly shortened, and the efficiency improved.

[0003] Most existing planer heads can only output planing power and cannot provide electrocoagulation hemostasis. The few electrocoagulation hemostasis planers that exist mostly use a conductive sleeve added to the outside of the planer head to form a radio frequency bipolar structure with the inner or outer blade of the planer head for electrocoagulation hemostasis.

[0004] Electrocoagulation hemostatic shaving blades need to possess both shaving and bipolar hemostatic functions. The hemostatic principle involves forming electrocoagulation bipolar electrodes at the blade tip, generating a high-frequency current between the electrodes. This energy accumulation produces a large amount of heat to stop bleeding from the tissue wound. However, excessive energy accumulation can lead to overheating of the blade tip, causing burns to the wound tissue. Furthermore, the overheated blade tip rapidly dries out the moisture in the tissue, causing the tissue to quickly denature and adhere to the blade tip surface. Therefore, water needs to be circulated between the electrocoagulation bipolar electrodes to cool and rinse the blade tip, removing excess energy and ensuring that the energy generated between the bipolar electrodes remains within a relatively stable range, preventing the blade tip from overheating and burning the tissue.

[0005] In clinical applications, to obtain a good surgical field of view and adapt to complex human cavities, a curved planer with a bending angle is required. This planer consists of an inner and an outer blade. The inner blade of the curved planer has a flexible tube that can be bent at any angle. After the inner blade is inserted into the outer blade, the rigid tube of the outer blade is bent to achieve the desired bending angle. However, existing electrocoagulation hemostasis planer heads, which add a conductive sleeve to the outside of the planer, cannot be bent in this double-layered tube configuration (conductive tube and outer blade tube), thus failing to meet clinical needs. Furthermore, most existing electrocoagulation hemostasis planers use water to circulate between the outer blade tube and its outer conductive sleeve. This double-layered design further prevents bending of the double-layered tube. Forcibly bending the double-layered tube would result in an elliptical bend in the outer blade tube, causing it to jam with the inner blade tube and preventing planing. It would also damage the insulation layer between the outer blade tube and the conductive sleeve, failing to meet clinical requirements for the bending angle. Utility Model Content

[0006] Therefore, the purpose of this utility model is to provide a coagulation shaving blade with the function of preventing tissue adhesion. It has the functions of shaving and hemostasis, and forms a water outlet channel for the flow of physiological saline between the electrocoagulation bipolar electrodes. Under the action of high-frequency current and physiological saline, the electrocoagulation bipolar electrodes achieve energy balance, preventing excessive energy accumulation of the electrocoagulation bipolar electrodes from causing excessive temperature of the bipolar electrodes and burning the tissue, and also preventing the blade tip from being too hot and adhering to the tissue. In addition, since the electrocoagulation bipolar electrodes are integrated at the front end of the outer blade tube, if it is necessary to bend the coagulation shaving blade, only the outer blade tube needs to be bent, so that the hemostasis shaving blade tip has a bending angle to meet clinical needs.

[0007] The technical solution of this utility model is as follows: This utility model provides a coagulation shaving blade with the function of preventing tissue adhesion, including an outer blade tube and an inner blade tube; the front end of the outer blade tube is connected to an insulating connector, the insulating connector is connected to an outer blade head and an electrode sleeve respectively, the outer blade head is partially housed in the electrode sleeve and a water outlet channel is formed between the two, the outer blade head and the electrode sleeve form an electrocoagulation bipolar and their adjacent surfaces are insulated; the inner blade tube is rotatably inserted into the outer blade tube and has an inner blade head at its front end.

[0008] As an optional solution, a water inlet channel is formed between the outer blade tube and the inner blade tube, and the insulating joint is provided with a water passage hole, and the water inlet channel and the water outlet channel are connected through the water passage hole.

[0009] Alternatively, in a back-to-forehead direction, the water passage is inclined outward relative to the axial direction of the insulating joint.

[0010] As an optional solution, the coagulation cutter also includes a water injection hose and a suction hose, wherein the water injection hose is connected to the water inlet channel and the suction hose is connected to the inner blade tube.

[0011] As an optional feature, the coagulation cutter also includes a water injection connector, which extends radially along the inner blade tube, and the water injection hose is connected to the water inlet channel through the water injection connector.

[0012] As an optional feature, the outer surface of the insulating joint is stepped axial.

[0013] As an optional embodiment, the coagulation shearing tool also includes a handle assembly, with the rear end of the outer blade tube connected to the handle assembly, and the rear end of the inner blade tube rotatably supported by the handle assembly.

[0014] As an optional solution, the handle assembly includes an adapter, the rear end of the outer blade tube is inserted into the adapter, and the inner blade tube is sealed to the adapter by a first sealing ring.

[0015] As an optional solution, the handle assembly also includes a motor mount and a motor, the motor being mounted on the motor mount, the rear end of the inner blade tube being rotatably coupled to the motor mount via a bearing, and the motor being drively connected to the inner blade tube.

[0016] As an optional solution, the adapter and the motor mount are plugged into each other, the inner blade tube is sealed to the motor mount by a second sealing ring, and the bearing is located between the first sealing ring and the second sealing ring.

[0017] As an optional feature, the handle assembly also includes a housing consisting of two detachable half-shells, with the adapter and the motor mount located within the housing.

[0018] As an optional solution, the outer blade tube has a first bend, and the inner blade tube has a second bend, the second bend being located inside the first bend, and the second bend being able to rotate and deform and transmit torque.

[0019] As an optional solution, the coagulation cutter also includes a wire, which is insulated from the outer blade tube and has its front end electrically connected to the electrode sleeve.

[0020] As an optional solution, a wire groove is provided on the outside of the insulating joint, through which the wire passes.

[0021] As an optional solution, the outer blade tube is fitted with a heat shrink tubing, and the wire is located between the outer blade tube and the heat shrink tubing.

[0022] Alternatively, the front end of the outer blade tube and the rear end of the outer blade head are inserted into the insulating connector.

[0023] As an optional solution, an annular portion is provided on the inner side of the insulating joint, and an insert block and a notch are provided between the outer blade tube and the annular portion, as well as between the outer blade head and the annular portion.

[0024] As an option, the number of water passage holes is at least three, and the at least three water passage holes are arranged in a ring.

[0025] The beneficial effects of this utility model are: 1. The coagulation shaving blade provided by this utility model has the function of preventing tissue adhesion, and has the functions of shaving and hemostasis. It avoids the need to change instruments for hemostasis during shaving surgery due to tissue bleeding, shortens the operation time, and improves the efficiency of surgery. 2. A water outlet channel is formed between the electrocoagulation bipolar electrodes, through which physiological saline can flow. The physiological saline can fully cover the inner surface of the electrode sleeve and the outer surface of the outer blade, making the conductivity more complete. Under the action of high-frequency current and physiological saline, the electrocoagulation bipolar electrodes achieve energy balance, preventing excessive energy accumulation in the electrocoagulation bipolar electrodes from causing the bipolar temperature to be too high and burn the tissue, and also preventing the blade from being too hot and sticking to the tissue. 3. Both electrocoagulation bipolar electrodes are integrated at the front end of the outer blade tube. If the hemostatic shaving blade needs to be bent, only the outer blade tube needs to be bent to achieve a bending angle for the hemostatic shaving blade head, which meets clinical needs. Of course, this structure is also suitable for situations where the outer and inner blade tubes are straight. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described 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 these drawings without creative effort. The above and other objects, features, and advantages of this utility model will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main idea of ​​this utility model.

[0027] Figure 1 This is a schematic diagram of the structure of the coagulation cutter provided in an embodiment of the present utility model; Figure 2 A schematic diagram of the structure of the coagulation cutter (without housing and additional components) provided in this embodiment of the utility model; Figure 3 for Figure 2 A sectional view; Figure 4 for Figure 3 A magnified view of part A; Figure 5 A schematic diagram of the front end structure of the coagulation cutter provided in this embodiment of the utility model; Figure 6 Schematic diagram of the insulating connector of the coagulation cutter provided in this embodiment of the utility model Figure 1 ; Figure 7 Schematic diagram of the insulating connector of the coagulation cutter provided in this embodiment of the utility model Figure 2 ; Figure 8 for Figure 3 A magnified view of part B.

[0028] Icons: 10-Clotting planer; 11-Drill head assembly; 14-Handle assembly; 15-Additional assembly; 110-Outer blade tube; 111-Outer blade head; 112-First insulation layer; 113-First bend; 114-Wire; 115-Second insulation layer; 120-Inner blade tube; 121-Inner blade head; 122-Second bend; 123-Water inlet channel; 124-Water outlet channel; 130-Insulating connector; 131-Electricity 132 - Water passage hole; 133 - Wire passage groove; 134 - Annular part; 135 - Embedded block; 141 - Adapter; 142 - Motor base; 143 - Motor; 144 - First sealing ring; 145 - Second sealing ring; 146 - First bearing; 147 - Second bearing; 150 - Water injection hose; 151 - Suction hose; 152 - Water injection pipe; 153 - Water injection connector; 154 - Suction pipe; 155 - Cable. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] Please refer to Figure 1 As shown, an embodiment of this utility model provides a coagulation shaving blade 10 with the function of preventing tissue adhesion. The coagulation shaving blade 10 can be applied to the treatment of sinus, pharynx, joint lesions, etc., and has both shaving and hemostatic functions.

[0034] First, it should be noted that in this embodiment, "anterior" and "posterior" are defined in terms of their relative position to the lesion site; the part closer to the lesion is "anterior," and the part farther from the lesion is "posterior." Figure 2 Taking the directions in the image as an example, the left side is "front" and the right side is "back". This is just an example and does not represent absolute directions.

[0035] The coagulation shaver 10 is mainly composed of a blade assembly 11, a handle assembly 14, and an auxiliary assembly 15. The following is a detailed discussion of each component.

[0036] First, please combine Figures 2-5 The cutter head assembly 11 includes an outer cutter tube 110, an inner cutter tube 120, an insulating connector 130, an outer cutter head 111, an electrode sleeve 131, and an inner cutter head 121.

[0037] The outer blade tube 110 has a tubular structure and can be a round tube, square tube, etc. In this embodiment, the outer blade tube 110 is a round tube, hollow inside and open at both ends. The material of the outer blade tube 110 is not limited, such as metal or plastic. If the outer blade tube 110 is made of metal, a first insulating layer 112 can be provided on all or part of the outer surface of the outer blade tube 110. The material of the insulating layer is not limited. In this embodiment, the first insulating layer 112 is made of heat shrink tubing. The heat shrink tubing is sleeved on the outer blade tube 110 and is fixed to the outer blade tube 110 after being heat-shrinked.

[0038] The outer blade tube 110 can be a straight tube or a bent tube, meaning the outer blade tube 110 has a first bend 113. The position of the first bend 113 is not limited. In this embodiment, the front end of the outer blade tube 110 is closer to the first bend 113 than the rear end. The first bend 113 can be pre-bent at the factory or bent on-site by medical personnel during use. The first bend 113 can be approximately arc-shaped, and the overall bending angle of the first bend 113 is not limited, for example, 30°, 60°, etc.

[0039] The rear end of the outer blade tube 110 is connected and fixed to the handle assembly 14. The connection method between the two is not limited, such as plug-in or welding.

[0040] An insulating connector 130 is disposed at the front end of the outer blade tube 110. The insulating connector 130 may be made of insulating material. The connection method between the insulating connector 130 and the outer blade tube 110 is not limited. For example, the front end of the outer blade tube 110 is inserted into the insulating connector 130.

[0041] The shape of the insulating connector 130 is not limited. For example, the insulating connector 130 can be a cylindrical tube. In this embodiment, please refer to... Figure 6 , Figure 7As shown, the insulating joint 130 has a tubular structure, the outer surface of the insulating joint 130 is stepped shaft-shaped, and the inner surface of the insulating joint 130 is provided with an annular portion 134.

[0042] The insulating connector 130 is connected to the outer blade 111 and the electrode sleeve 131 respectively. The connection points and connection methods between the outer blade 111 and the insulating connector 130, and between the electrode sleeve 131 and the insulating connector 130 are not limited, such as bonding, welding, etc. In this embodiment, the rear end of the electrode head is sleeved on the outside of the insulating connector 130 and the two are fixed together. The rear end of the outer blade 111 is inserted into the insulating connector 130 and the two are fixed together. The rear end of the outer blade 111 can abut against the annular portion 134.

[0043] Furthermore, to ensure more accurate positioning of the outer blade 111 and prevent rotation of the outer blade 111 relative to the insulating connector 130 and the insulating connector 130 relative to the outer blade tube 110, the following solutions can be adopted, but are not limited to: An insert block 135 and a notch are correspondingly provided between the outer blade tube 110 and the annular portion 134, and between the outer blade 111 and the annular portion 134. For example, a notch is provided at the front end of the outer blade tube 110, and an insert block 135 is provided at the rear end of the annular portion 134. When the front end of the outer blade tube 110 is inserted into the insulating connector 130, the insert block 135 is embedded in the notch, thus preventing rotation of the insulating connector 130 relative to the outer blade tube 110. In other embodiments, it is also possible to provide an insert block 135 at the front end of the outer blade tube 110 and a notch at the rear end of the annular portion 134. In addition, the rear end of the outer blade 111 is provided with a notch and the front end of the annular portion 134 is provided with an insert block 135, or the rear end of the outer blade 111 is provided with an insert block 135 and the front end of the annular portion 134 is provided with a notch, are both options.

[0044] The structure of the outer blade 111 can refer to the existing technology, with a window on one side and an opening at the rear end, and the shape of the window is not limited.

[0045] The shape of the electrode sleeve 131 matches the shape of the outer blade head 111. The electrode sleeve 131 has a window on one side and an opening at the rear. A portion of the outer blade head 111 is located inside the electrode sleeve 131, while another portion can be exposed. The window of the outer blade head 111 can be located on the side opposite to the electrode sleeve 131. Both the outer blade head 111 and the electrode head are made of a conductive metal material. The outer blade head 111 and the electrode sleeve 131 form an electrocoagulation bipolar structure. The adjacent surfaces of the outer blade head 111 and the electrode sleeve 131 are insulated; for example, a second insulating layer 115 is provided on the outer surface of the outer blade head 111 and / or the inner surface of the electrode sleeve 131. A high-frequency current can be generated between the exposed portion of the outer blade head 111 and the outer surface of the electrode sleeve 131, thereby performing electrocoagulation hemostasis on the lesion site.

[0046] There is a gap between the outer surface of the outer blade 111 and the inner surface of the electrode sleeve 131, which forms a water outlet channel 124 for the flow of physiological saline. The physiological saline can fully cover the inner surface of the electrode sleeve 131 and the outer surface of the outer blade 111, thereby improving conductivity and hemostasis.

[0047] The structure of the inner blade tube 120 can refer to the prior art. The inner blade tube 120 has a tubular structure and can be a round tube, square tube, etc. In this embodiment, the inner blade tube 120 is a round tube, which is hollow inside and open at both ends. The material of the inner blade tube 120 is not limited, such as metal or plastic. The rear end of the inner blade tube 120 is rotatably supported on the handle assembly 14. The connection method between the inner blade tube 120 and the handle assembly 14 is not limited. For example, the inner blade tube 120 and the handle assembly 14 are rotatably connected by one, two, or three bearings, that is, the inner ring of the bearing is sleeved on the inner blade tube 120, and the outer ring of the bearing is fixed to the handle assembly 14.

[0048] The outer diameter of the inner blade tube 120 is slightly smaller than the inner diameter of the outer blade tube 110. The inner blade tube 120 passes through the outer blade tube 110 and can rotate around its own axis within the outer blade tube 110. The inner blade tube 120 and the outer blade tube 110 may or may not be insulated from each other.

[0049] The inner blade 121 is located at the front end of the inner blade tube 120. The connection method between the two is not limited, such as bonding, welding, or integral molding. The shape of the inner blade 121 can refer to the prior art, with a window on one side and an opening at the rear end. The window of the inner blade 121 is provided with a serrated structure to facilitate the planing of lesion tissue.

[0050] The outer blade 111 and the electrode sleeve 131 are respectively electrically connected to the bipolar circuit of the host. The method of electrical connection between the two is not limited. For example, the outer blade 111 and the host, and the electrode sleeve 131 and the host are respectively electrically connected through wires 114. In this embodiment, the following scheme can be adopted, but is not limited to: the blade assembly 11 also includes wires 114, which are insulated from the outer blade tube 110. The front end of the wires 114 is electrically connected to the electrode sleeve 131. The inner blade tube 120 and the inner blade 121 are both made of conductive metal. The outer surface of the inner blade 121 can contact the inner surface of the outer blade 111, so that the inner blade tube 120, the inner blade 121 and the outer blade 111 are electrically connected in sequence.

[0051] The relative position of the wire 114 and the outer blade tube 110 is not limited. For example, the wire 114 may pass through the outer blade tube 110. In this embodiment, the wire 114 is located between the outer blade tube 110 and the heat shrink tubing. Furthermore, a wire groove 133 may be provided on the outside of the insulating joint 130, through which the wire 114 passes. The size and shape of the wire groove 133 are not limited. Preferably, the wire groove 133 extends axially from the rear end of the insulating joint 130 to the electrode sleeve 131, and the width of the wire groove 133 may be greater than the diameter of the wire 114.

[0052] A water inlet channel 123 is formed between the outer surface of the inner blade tube 120 and the inner surface of the outer blade tube 110. Furthermore, the distance between the outer surface of the inner blade head 121 and the inner surface of the outer blade head 111 is extremely small or close to zero, thus closing or partially closing the front end of the water inlet channel 123. A water passage hole 132 is provided on the insulating joint 130, penetrating the side wall of the insulating joint 130. The water inlet channel 123 and the water outlet channel 124 are connected through the water passage hole 132.

[0053] The number of water passage holes 132 is not limited, such as one, two, three, etc. In this embodiment, the number of water passage holes 132 is three, and the three water passage holes 132 are arranged in a ring.

[0054] The shape, size, and orientation of the water passage 132 are not limited. For example, the water passage 132 can be a round or square hole. The water passage 132 extends radially along the insulating joint 130. In this embodiment, in the direction from back to front, the water passage 132 is gradually inclined outward relative to the axial direction of the insulating joint 130, that is, the center line of the water passage 132 and the axis of the insulating joint 130 are set at an angle. The size of the angle can be set as needed. This setting allows the saline solution in the inlet channel to smoothly enter the outlet channel, making the flow of saline solution smoother.

[0055] If the outer blade tube 110 is a bent tube, the inner blade tube 120 is provided with a second bend 122. The second bend 122 is located inside the first bend 113. The length of the second bend 122 can be greater than or equal to the length of the first bend 113. The shape or structure of the second bend 122 is not limited. For example, the second bend 122 can be made of a metal tube. The second bend 122 has a spiral cut in the circumferential direction. The second bend 122 can both rotate and deform and transmit torque. That is, when the inner blade tube 120 rotates inside the outer blade tube 110, the second bend 122 can drive the inner blade head 121 to rotate.

[0056] The structure of the handle assembly 14 is not limited and can refer to the prior art. In this embodiment, the coagulation shaving blade 10 integrates the blade assembly 11 and the handle assembly 14 into one unit. In some other embodiments, the blade assembly 11 and the handle assembly 14 can also adopt a separate structure.

[0057] In this embodiment, the structure of the handle assembly 14 can adopt, but is not limited to, the following solutions: Please refer to Figure 2 , Figure 8 As shown, the handle assembly 14 includes an adapter 141, a motor mount 142, and a motor 143.

[0058] The structure of the adapter 141 is not limited. The rear end of the outer blade tube 110 is inserted into the adapter 141 and the two are fixed. The fixing method is not limited. The inner blade tube 120 passes through the adapter 141. The inner blade tube 120 and the adapter 141 are sealed by the first sealing ring 144. Furthermore, the inner blade tube 120 and the adapter 141 can be rotatably engaged by the first bearing 146.

[0059] The structure of the motor mount 142 is not limited. The motor mount 142 is located at the rear end of the adapter 141. The connection method between the motor mount 142 and the adapter 141 is not limited, such as welding, integral molding, detachable connection, etc. In this embodiment, the rear end of the adapter 141 is inserted into the motor mount 142, and the two are connected and fixed.

[0060] The rear end of the inner knife tube 120 is inserted into the motor housing 142, and the inner knife tube 120 and the motor housing 142 are rotatably connected via a second bearing 147. The inner knife tube 120 and the motor housing 142 are sealed by a second sealing ring 145. The first bearing 146 and the second bearing 147 are located between the first sealing ring 144 and the second sealing ring 145. The first sealing ring 144 and the second sealing ring 145 form a sealed area, which can effectively prevent physiological saline from entering the sealed area and prevent corrosion of the first bearing 146 or the second bearing 147. Of course, in some embodiments, other solutions can also be adopted, such as the inner knife tube 120 being rotatably connected only to the motor housing 142 via a bearing, or the inner knife tube 120 being rotatably connected only to the adapter 141 via a bearing, or the number of bearings being changed, etc.

[0061] The motor 143 is mounted on the motor base 142, and the connection method between the two is not limited. For example, the motor base 142 is provided with a receiving cavity, and the motor 143 is embedded in the receiving cavity. In this embodiment, the motor base 142 extends downward, and the front end of the motor 143 is connected and fixed to the motor base 142 by a threaded fastener.

[0062] The motor 143 is driven by the inner cutter tube 120. They can be directly connected or connected via a gear speed increaser or gear reducer. In this embodiment, the motor 143 and the inner cutter tube 120 are connected via a gear reducer. Specifically, the input end of the gear reducer is coaxially fixed to the output shaft of the motor 143, and the output end of the gear reducer is coaxially fixed to the inner cutter tube 120. That is, the input end of the gear reducer is sleeved and fixed to the output shaft of the motor 143, and the output end of the gear reducer is sleeved and fixed to the inner cutter tube 120. The output end of the gear reducer does not necessarily need to contact the second bearing 147. Alternatively, a portion of the output end of the gear reducer can be embedded between the inner cutter tube 120 and the second bearing 147.

[0063] The model of motor 143 is not limited and can be selected as needed, which will not be elaborated here. Control buttons can be installed on the adapter 141, motor mount 142, or other parts to control the operation or stop of motor 143.

[0064] Furthermore, the handle assembly 14 may also include a housing. The shape and structure of the housing are not limited. The housing may consist of two detachable half-shell assemblies. The two half-shells may be divided into upper and lower parts or left and right parts. Parts or all of the adapter 141, motor mount 142, and motor 143 are located inside the housing. The housing can partially or completely enclose the adapter 141, motor mount 142, and motor 143, preventing them from being exposed and effectively protecting the adapter 141 and other components.

[0065] The additional component 15 consists of a water injection hose 150, a suction hose 151, and a cable 155.

[0066] One end of the water injection hose 150 is inserted into the housing of the handle assembly 14. The water injection hose 150 is connected to the water inlet channel 123, and the water injection hose 150 can inject physiological saline into the water inlet channel 123. The water injection hose 150 and the water inlet channel 123 can be directly connected, or indirectly connected through the water injection pipe 152 and the water injection connector 153. The water injection connector 153 extends radially along the adapter 141. A transition area can be formed between the rear end of the outer knife tube 110, the adapter 141, the inner knife tube 120, and the first sealing ring 144. This transition area is connected to the water inlet channel 123. The water injection connector 153 is connected to the transition area. The water injection hose 150 and the water injection connector 153 are connected through the water injection pipe 152, which can be located inside the housing.

[0067] One end of the suction tube 151 is inserted into the housing of the handle assembly 14. The suction tube 151 is connected to the inner knife tube 120. The two can be directly connected or indirectly connected through the suction tube 154. The front end of the suction tube 154 is inserted into the motor base 142 and connected to the inner knife tube 120. The suction tube 151 draws out the excised tissue or saline solution through the inner knife tube 120.

[0068] One end of cable 155 has a plug for connecting to the main unit, which supplies power to cable 155. Cable 155 consists of a first wire and a second wire: the first wire is connected to the positive and negative terminals of motor 143 to control the planing power; the second wire is connected to conductor 114 and adapter 141, respectively. Adapter 141 is electrically connected to either the outer cutter tube 110 or the inner cutter tube 120. Due to the contact and electrical connection between the first and second bends, or the contact and electrical connection between the inner cutter head 121 and the outer cutter head 111, the second wire is electrically connected to the outer cutter head 111 to control the electrocoagulation bipolar output. Of course, in some embodiments, the second wire can also pass through the outer cutter tube 110 and connect directly to the outer cutter head 111.

[0069] The coagulation scraper 10 can be used with an endoscope or other medical devices. The working method of the coagulation scraper 10 with anti-tissue adhesion function provided in this embodiment is as follows: Connect the plug of cable 155 to the main unit, connect the end of water injection hose 150 to the water supply device, and connect the end of suction hose 151 to the suction pump, etc. Insert the coagulation shaving blade 10 into the designated position, namely the outer blade head 111, electrode sleeve 131, and inner blade head 121, which are adjacent to the lesion tissue; The functions of the coagulation shaving blade 10 are controlled by control buttons, which include water injection, hemostasis, shaving, and suction. These functions can be performed in any order. Water injection function: The water supply device injects physiological saline from the tail end of the water injection hose 150. The physiological saline flows from the inner cavity of the electrode sleeve 131 to the outer blade 111 through the water injection hose 150, water injection pipe 152, water injection connector 153, transition area, water inlet channel 123, water passage hole 132 and water outlet channel 124, and reaches the lesion tissue. Hemostasis function: The hemostasis function electrode sleeve 131 and the outer blade head 111 are connected by a high-frequency current generated by the host to generate energy and achieve the hemostasis effect; Planing function: Driven by motor 143, inner blade tube 120 rotates at high speed in outer blade tube 110. At this time, the second bend 122 can rotate in the first bend 113 and transmit torque, so that the inner blade head 121 rotates in the outer blade head 111 to plan and remove the lesion tissue. Suction function: When the suction pump and other components are in operation, under negative pressure, the removed tissue is suctioned out through the inner cavity of the inner blade head 121, the inner blade tube 120, the suction tube 154, and the suction hose 151.

[0070] The above steps can be added, removed, modified, or their order adjusted as needed.

[0071] The coagulation shaving blade 10 provided in this embodiment has the following advantages: 1. It can simultaneously achieve the functions of shaving and hemostasis, avoiding the need to change instruments for hemostasis during shaving surgery due to tissue bleeding, shortening the operation time, and improving the efficiency of the operation; 2. Only one layer of outer blade tube 110 is bent, and the electrocoagulation bipolar composed of outer blade head 111 and electrode sleeve 131 is integrated at the front end of outer blade tube 110, so that the coagulation shaving blade 10 has a bending angle, the inner blade tube 120 is not easy to get stuck, the rotation is smoother, and it meets clinical needs; 3. A saline channel is formed between the electrocoagulation bipolar. Under the action of high-frequency current and saline, the electrocoagulation bipolar achieves energy balance, preventing excessive energy accumulation of the electrocoagulation bipolar and causing the bipolar temperature to be too high, burning the tissue, and also preventing the blade head from being too hot and sticking to the tissue; 4. The water flow channel design meets the bending angle requirements of the coagulation shaving blade 10. A water inlet channel 123 is set between the inner blade tube 120 and the outer blade tube 110 without increasing the blade tube size of the coagulation shaving blade 10, which meets the requirements for entering narrow areas.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coagulation shaving tool with the function of preventing tissue adhesion, characterized in that, include: An outer blade tube has an insulating connector at its front end. The insulating connector is connected to an outer blade head and an electrode sleeve. The outer blade head is partially housed within the electrode sleeve, and a water outlet channel is formed between the two. The outer blade head and the electrode sleeve form an electrocoagulation bipolar structure, and their adjacent surfaces are insulated. The inner blade tube is rotatably inserted inside the outer blade tube and has an inner blade head at its front end.

2. The hemostatic shaving blade with anti-tissue adhesion function according to claim 1, characterized in that, A water inlet channel is formed between the outer blade tube and the inner blade tube. The insulating joint is provided with a water passage hole. The water inlet channel and the water outlet channel are connected through the water passage hole.

3. The hemostatic shaving blade with anti-tissue adhesion function according to claim 2, characterized in that, In the direction from back to front, the water passage hole is inclined outward relative to the axial direction of the insulating joint.

4. The hemostatic shaving blade with anti-tissue adhesion function according to claim 2, characterized in that, The coagulation cutter also includes a water injection hose and a suction hose, wherein the water injection hose is connected to the water inlet channel and the suction hose is connected to the inner blade tube.

5. The hemostatic shaving blade with anti-tissue adhesion function according to claim 4, characterized in that, The coagulation cutter also includes a water injection connector, which extends radially along the inner blade tube, and the water injection hose is connected to the water inlet channel through the water injection connector.

6. The hemostatic shaving blade with anti-tissue adhesion function according to claim 1, characterized in that, The outer surface of the insulating joint is stepped and axial.

7. The hemostatic shaving blade with anti-tissue adhesion function according to claim 1, characterized in that, The coagulation shaving tool also includes a handle assembly, the rear end of the outer blade tube is connected to the handle assembly, and the rear end of the inner blade tube is rotatably supported by the handle assembly.

8. The hemostatic shaving blade with anti-tissue adhesion function according to claim 7, characterized in that, The handle assembly includes an adapter, the rear end of the outer blade tube is inserted into the adapter, and the inner blade tube is sealed to the adapter by a first sealing ring.

9. The hemostatic shaving blade with anti-tissue adhesion function according to claim 8, characterized in that, The handle assembly also includes a motor base and a motor. The motor is mounted on the motor base, and the rear end of the inner blade tube is rotatably connected to the motor base via a bearing. The motor is drively connected to the inner blade tube.

10. The hemostatic shaving tool with anti-tissue adhesion function according to claim 9, characterized in that, The adapter and the motor mount are plugged into each other, the inner blade tube is sealed to the motor mount by a second sealing ring, and the bearing is located between the first sealing ring and the second sealing ring.

11. The hemostatic shaving tool with anti-tissue adhesion function according to claim 9, characterized in that, The handle assembly also includes a housing consisting of two detachable half-shells, with the adapter and the motor mount located within the housing.

12. The hemostatic shaving tool with anti-tissue adhesion function according to claim 1, characterized in that, The outer blade tube has a first bend, and the inner blade tube has a second bend, which is located inside the first bend. The second bend is capable of rotating and deforming and transmitting torque.

13. The hemostatic shaving tool with anti-tissue adhesion function according to claim 1, characterized in that, The coagulation cutter also includes a wire, which is insulated from the outer blade tube and has its front end electrically connected to the electrode sleeve.

14. The hemostatic shaving blade with anti-tissue adhesion function according to claim 13, characterized in that, The outer side of the insulating joint is provided with a wire passage groove, through which the wire passes.

15. The hemostatic shaving tool with anti-tissue adhesion function according to claim 14, characterized in that, The outer blade tube is fitted with a heat shrink tubing, and the wire is located between the outer blade tube and the heat shrink tubing.

16. The hemostatic shaving tool with anti-tissue adhesion function according to claim 1, characterized in that, The front end of the outer blade tube and the rear end of the outer blade head are inserted into the insulating connector.

17. The hemostatic shaving tool with anti-tissue adhesion function according to claim 1, characterized in that, An annular portion is provided on the inner side of the insulating joint, and an insert block and a notch are provided between the outer blade tube and the annular portion, as well as between the outer blade head and the annular portion.

18. The hemostatic shaving blade with anti-tissue adhesion function according to claim 2, characterized in that, The number of water passage holes is at least three, and the at least three water passage holes are arranged in a ring.

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