Endoscopic surgical shaver

Abstract

The present invention belongs to the technical field of medical devices, and discloses an endoscopic surgical shaver. The endoscopic surgical shaver includes a cutter head, a power handle and a main unit. A driving member is provided in the power handle, and the driving member is transmission-connected to the cutter head. A plurality of switch buttons are provided on the power handle, and the plurality of switch buttons are used to control the rotation state of the driving member; the driving member is electrically connected to the main unit, and the switch button is connected to the main unit only through a wire signal, and the rotation state switching of the driving member is completed by the on and off operations of the switch button. Through the present invention, the current problem that the button circuit board is easily damaged under high temperature, high pressure and high humidity conditions, thereby increasing the maintenance cost, is solved, while the compactness of the entire handle structure is improved, and the doctor's surgical operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to an endoscopic surgical shaver. Background Art

[0002] In endoscopic surgery, doctors need to cut soft tissue and bone tissue in joints. The shaver is a commonly used surgical tool, and is designed for wear arthroplasty, synovectomy, and cutting and scraping in joints. Specifically, during the operation, doctors use the shaver to clean and shape the synovium, meniscus, cartilage and other tissues in the joint, or to remove and shape the osteophytes and articular surfaces in the joint to achieve the treatment purpose.

[0003] In the prior art, the cutter head of the planer is mounted on one end of a power handle, and a motor and other structures are arranged inside the power handle to provide power for the cutter head. In addition, components such as a circuit board are also arranged inside the power handle.

[0004] The power handle is a reusable component. After each operation, it needs to be disinfected. The main disinfection conditions are high temperature, high pressure and high humidity disinfection. Specifically, it is disinfected at 134°C and 2 atmospheres for 10 minutes. Under high temperature, high pressure and high humidity conditions, the key circuit board is easily damaged, resulting in an increase in the overall maintenance cost. On the other hand, the current power handle is relatively long and poorly compact, which makes it less convenient for doctors to use. Summary of the invention

[0005] The purpose of the present invention is to provide an endoscopic surgical shaver to solve the current problem that the key circuit board is easily damaged under high temperature, high pressure and high humidity conditions, thereby increasing the maintenance cost, while improving the compactness of the entire power handle structure to facilitate the doctor's operation.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Endoscopic surgical shaver, comprising:

[0008] Blade head;

[0009] A power handle, wherein a driving member is disposed in the power handle, wherein the driving member is in transmission connection with the cutter head, and wherein a plurality of switch buttons are disposed on the power handle, wherein the plurality of switch buttons are used to control the rotation state of the driving member;

[0010] The host, the driving member is electrically connected to the host, the switch button and the host are connected only through a wire signal, and the rotation state switching of the driving member is completed through the on and off operations of the switch button.

[0011] As an optional solution for an endoscopic surgical shaver, the blade head includes an inner blade and an outer blade, the inner blade is transmission-connected to the driving member, and the outer blade is clamped to the end of the power handle.

[0012] As an optional solution for an endoscopic surgical shaver, a slot is provided on the outer knife, and a latch is provided at the end of the power handle, and the latch is inserted into and latched in the slot.

[0013] As an optional solution for an endoscopic surgical shaver, a plurality of the switch buttons are arranged in parallel with each other, each branch of the switch button is connected to an identification resistor, and the branches of the plurality of the switch buttons are connected to a main conductor and connected to the host through the main conductor.

[0014] As an optional solution for an endoscopic surgical shaver, a plurality of the switch buttons are arranged in parallel, and a plurality of branches having the switch buttons are respectively connected to the host.

[0015] As an optional solution for an endoscopic surgical shaver, the power handle includes a shell, the switch button is arranged on the outer wall of the shell, the switch button includes a button and a contact plate, and the switch button is turned on by pressing the button and squeezing the contact plate.

[0016] As an optional solution for an endoscopic surgical shaver, the power handle includes a shell, a suction channel is provided inside the shell, and the suction channel is used to connect a negative pressure suction tube so that tissue can be sucked out through the suction channel; the suction channel includes a connecting hole formed on the end surface of the shell, and the negative pressure suction tube is inserted into the connecting hole.

[0017] As an optional solution of an endoscopic surgical shaver, the cross section of the suction channel is in the shape of a curved strip, and the curved surface profile of the suction channel matches the outer wall profile of the driving member.

[0018] As an optional solution of an endoscopic surgical shaver, the endoscopic surgical shaver also includes a cable, the power handle is electrically connected to the host via the cable, the power handle is connected to the cable via a first plug, and the first plug is an aviation plug.

[0019] As an optional solution for an endoscopic surgical shaver, one end of the cable away from the power handle is electrically connected to the host through a second plug, and the second plug is an aviation plug.

[0020] Beneficial effects:

[0021] In the present invention, compared with the existing power handle, the switch button is usually integrated in the key circuit board, wherein the key circuit board is arranged inside the power handle, and is electrically connected to the host through the key circuit board. The present endoscopic surgical planer eliminates the key circuit board inside the existing power handle, and the switch button and the host are electrically connected only through a wire, and the rotation state of the drive member is controlled in a simple circuit on-off manner, thereby solving the problem that when the power handle is in a high temperature, high pressure and high humidity sterilization environment, the key circuit board is damaged by the influence of high temperature, high pressure and high humidity, and at the same time saves maintenance costs. On the other hand, since the entire power handle eliminates the key circuit board, the space of the entire power handle is saved, and the volume and length of the power handle can be further made smaller, thereby improving the compactness of the entire power handle and facilitating the doctor's operation during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a power handle in an endoscopic surgical shaver provided by an embodiment of the present invention;

[0023] Figure 2 is a side view of a power handle in an endoscopic surgical shaver provided by an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Cross-sectional view at section AA;

[0025] Figure 4 The circuit diagram of the first parallel switch button provided by the implementation example of the present invention;

[0026] Figure 5 The circuit diagram of the second parallel switch button provided by the implementation example of the present invention.

[0027] In the figure:

[0028] 1. Power handle; 11. Switch button; 12. Card convex; 13. Main wire; 14. Shell; 141. Suction channel; 142. Connection hole; 15. Identification resistor; 16. First plug;

[0029] 2. Driving parts;

[0030] 3. Host. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] Please refer to the attached Figure 1 -Attached Figure 3 The present embodiment relates to an endoscopic surgical planer (hereinafter referred to as "planer"), which includes a cutter head, a power handle 1 and a host 3. A driving member 2 is provided in the power handle 1, and the driving member 2 is transmission-connected to the cutter head. The power handle 1 is provided with a plurality of switch buttons 11, and the plurality of switch buttons 11 are used to control the rotation state of the driving member 2; the driving member 2 is electrically connected to the host 3, and the switch button 11 is connected to the host 3 only through a wire signal, and the rotation state switching of the driving member 2 is completed by the on and off operations of the switch button 11.

[0036] Specifically, the knife head includes two parts, namely, an inner knife and an outer knife. The main body of the inner knife and the main body of the outer knife are both stainless steel tubes. The inner knife and the outer knife are both provided with a handle on the side away from the working end. The handle of the inner knife is placed inside the handle of the outer knife, and the main body of the inner knife is located inside the main body of the outer knife. At the same time, the outer knife is relatively fixed to the power handle 1, and the inner knife can rotate relative to the outer knife inside the outer knife. Specifically, the inner knife is connected to the driving member 2 in a transmission manner, and the driving member 2 is used to drive the inner knife to rotate, and the target diseased tissue can be cut through the scissor difference between the inner knife and the outer knife.

[0037] The blade is a disposable part and should be removed and discarded into a medical waste recycling bin after the operation.

[0038] The power handle 1 is an object that the doctor holds during surgery. The outer wall of the power handle 1 is a curved surface that is convenient for the doctor to hold, usually a cylindrical surface or a closed curved surface that is similar to a cylindrical surface. The power handle 1 is rod-shaped as a whole, one end of which is used to connect to the blade, and the other end is connected to the host 3. The driving member 2 can use a brushless DC motor, and a plurality of switch buttons 11 for controlling the brushless DC motor are also provided on the power handle 1.

[0039] Exemplarily, this embodiment is provided with three switch buttons 11, which are respectively used to control the forward rotation, reverse rotation and reciprocating rotation of the driving member 2. The host 3 is internally provided with a controller and a power supply for outputting a state adjustment signal to the driving member 2 and providing electric energy.

[0040] In the existing power handle 1, the switch button 11 is usually integrated on a key circuit board, wherein the key circuit board is arranged inside the power handle 1, and then electrically connected to the host 3 through the key circuit board. The present planer eliminates the existing key circuit board, and the switch button 11 and the host 3 are electrically connected only through a wire, and the rotation state of the driving member 2 is controlled in a simple circuit on-off manner, thereby solving the problem that the key circuit board is affected and damaged when the power handle 1 is in a high temperature, high pressure and high humidity sterilization environment, and saving maintenance costs at the same time. On the other hand, since the entire power handle 1 eliminates the key circuit board, the internal space of the entire power handle 1 is also saved, and the volume and length of the power handle 1 can be further made smaller, thereby improving the compactness of the entire power handle 1 and facilitating the doctor's operation during the operation. By reducing the volume and length of the power handle 1, the doctor can hold the power handle 1 in a pen-holding posture to perform tissue resection surgery on the patient, avoiding the problem of inconvenience in the doctor holding the power handle 1 when the gripping posture is perpendicular to the tissue part of the power handle 1.

[0041] Optionally, the outer knife is snap-fitted to the end of the power handle 1 .

[0042] In one implementation of this embodiment, an annular clamping groove is provided at the end of the power handle 1, and the handle of the external knife is provided with a plurality of elastic buckles along the circumference, and the handle of the external knife can be directly inserted into the clamping groove, and is clamped with the inner wall of the clamping groove through the elastic buckle. The clamping connection method can improve the connection efficiency between the external knife and the power handle 1, and the detachable connection method can also facilitate the doctor to connect and disassemble the two.

[0043] Optionally, a slot is provided on the outer blade, and a clamping protrusion 12 is provided at the end of the power handle 1, and the clamping protrusion 12 is inserted into and clamped in the slot.

[0044] In another implementation of this embodiment, a cylindrical clamping protrusion 12 is formed at the end of the power handle 1. Adaptively, a slot is provided at the handle of the external knife, and the clamping protrusion 12 is directly inserted into the slot and clamped inside the slot. There are many specific forms of clamping, which are not specifically limited in this embodiment. For example, a buckle or annular protrusion can be provided on the circumference of the clamping protrusion 12, and when the external knife and the power handle 1 are inserted into each other, the buckle or annular protrusion can be smoothly clamped inside the buckle or annular groove inside the slot.

[0045] By providing a slot on the handle of the outer knife, and correspondingly providing a cam 12 at the end of the power handle 1, the two are inserted into each other to realize the connection between the outer knife and the power handle 1. Compared with the above-mentioned technical solution of providing a slot at the end of the power handle 1, the length of the power handle 1 can be further shortened. Because the depth of the slot depends on the length of the handle of the outer knife, the greater the depth of the slot, the greater the length of the entire power handle 1, and the two are positively correlated. Even if the length of the handle of the outer knife can be adaptively reduced, it is difficult to reduce it a lot. By providing a cam 12 at the end of the power handle 1, the cam 12 is only used to connect with the outer knife, and the length of the cam 12 can be reduced a lot. Therefore, compared with the above solution of providing a slot at the end of the power handle 1, providing a cam 12 at the end can make the length of the entire power handle 1 smaller and the structure of the entire power handle 1 more compact.

[0046] Please refer to the attached Figure 4 Optionally, multiple switch buttons 11 are arranged in parallel with each other, and an identification resistor 15 is connected to the branch of each switch button 11. The branches of multiple switch buttons 11 are all connected to the main wire 13 and connected to the host 3 through the main wire 13.

[0047] In one implementation of this embodiment, each switch button 11 is connected in the circuit as a branch, and all branches are electrically connected to the host 3 through a main conductor 13. In addition, each branch is provided with an identification resistor 15 to ensure that each branch controls the rotation state of a driving member 2.

[0048] Specifically, taking the three switch buttons 11 as an example, by triggering the first switch button 11 to connect the first branch, the host 3 can recognize that the branch with the first identification resistor 15 is connected, so that the host 3 outputs a forward control signal to the driving member 2; when the second switch button 11 is triggered to connect the second branch, the host 3 can recognize that the branch with the second identification resistor 15 is connected, so that the host 3 outputs a reverse control signal to the driving member 2; when the third switch button 11 is triggered to connect the third branch, the host 3 can recognize that the branch with the third identification resistor 15 is connected, so that the host 3 outputs a reciprocating control signal to the driving member 2.

[0049] In this embodiment, the three branches are connected to a main conductor 13, and connected to the main unit 3 through the main conductor 13. The three branches are connected through the main conductor 13, and a connecting cable is correspondingly arranged inside the power handle 1. The space inside the power handle 1 occupied by the connecting cable is small, so that the radial size of the power handle 1 can be appropriately reduced. However, once the main conductor 13 fails, the functions of the three branches will all fail.

[0050] Please refer to the attached Figure 5 Optionally, a plurality of switch buttons 11 are arranged in parallel, and a plurality of branches having the switch buttons 11 are respectively connected to the host 3 .

[0051] In another implementation of this embodiment, the three branches are respectively connected to the main unit 3. In this connection method, even if one of the branches fails, it will not affect the functions of the other two branches. Since the connecting cables of the branches are arranged around the driving member 2, and the connecting cables extend from the switch button 11 to the tail end of the power handle 1, and the connecting cables of the three branches need to be arranged at the same time, more internal space of the power handle 1 will be occupied, thereby causing the radial size of the power handle 1 to increase to a certain extent.

[0052] Optionally, the power handle 1 includes a shell 14, and the switch button 11 is arranged on the outer wall of the shell 14. The switch button 11 includes a button and a contact plate. The switch button 11 is turned on by pressing the button and squeezing the contact plate.

[0053] Specifically, an installation cavity is provided inside the shell 14, and the installation cavity is a cylindrical cavity to accommodate the cylindrical driving member 2, wherein the driving member 2 is placed in the installation cavity, and the switch button 11 is arranged on the outer wall of the shell 14 to facilitate the doctor to hold the power handle 1 and press the corresponding switch button 11. In the present embodiment, the switch button 11 has only the function of connecting and disconnecting. The switch button 11 includes a button and a bridge-shaped contact plate. When the button is pressed, the button squeezes the contact plate to connect the corresponding branch circuit. Of course, in other embodiments, the switch button 11 may also have other forms. For example, the switch button 11 may include a slider and an elastic contact sheet. The connection and disconnection are achieved through the interaction between the slider and the elastic contact sheet. The surface where the slider contacts the elastic contact sheet may be a wedge-shaped surface, or an arc-shaped boss may be provided at the position where the slider contacts the elastic contact sheet. In the process of pressing or pushing the slider, the wedge-shaped surface or boss of the slider can squeeze the elastic contact sheet to deform. The elastic contact sheet is an elastic metal sheet. After deformation, it can be used to connect the circuit. When the slider is lifted, the elastic contact sheet can be used to disconnect the circuit due to the reverse elastic recovery, and the slider is squeezed to reset at the same time.

[0054] In this embodiment, the overall structure of the switch button 11 is simple and reliable.

[0055] Optionally, the power handle 1 includes a shell 14 , and a suction channel 141 is provided inside the shell 14 . The suction channel 141 is used to connect a negative pressure suction tube so that tissue can be sucked out through the suction channel 141 .

[0056] In this embodiment, the diseased tissue cut by the cutter head can enter the notches of the inner and outer cutters, and the notches are connected to one side of the suction channel 141 inside the shell 14. The other side of the suction channel 141 is connected to a negative pressure suction tube at the far end, and the diseased tissue can be sucked out by the negative pressure suction tube. Specifically, the suction channel 141 can be directly opened on the structure of the shell 14. Of course, a tubular member can also be set in the installation cavity inside the shell 14, and the suction channel 141 can be formed inside the tubular member. Those skilled in the art can make targeted selections between the two forms of the suction channel 141 according to the difficulty and economy of processing the suction channel 141, and this embodiment does not make specific limitations.

[0057] Furthermore, the suction channel 141 includes a connecting hole 142 formed on the end surface of the shell 14, and the negative pressure suction tube is inserted into the suction hole.

[0058] In this embodiment, the connection hole 142 is connected to the suction channel 141, and the connection hole 142 is directly formed on the end face of the shell 14. When the connection hole 142 is matched with the negative pressure suction tube, the tube head of the negative pressure suction tube is directly inserted into the connection hole 142, so that the connection hole 142 and the negative pressure suction tube are tightly matched. Through the above setting method, it can be ensured that the end of the suction channel 141 will not be extended too much outside the end face of the shell 14, so that the entire power handle 1 has a smaller length and higher compactness, which further facilitates the doctor to grasp and operate or perform surgical operations in the posture of holding a pen. The overall power handle 1 is small and flexible while being able to expand a variety of surgical methods.

[0059] Optionally, the cross section of the suction channel 141 is in the shape of a curved strip, and the curved surface profile of the suction channel 141 matches the outer wall profile of the driving member 2 .

[0060] Specifically, the cross-section of the suction channel 141 is in the shape of a curved strip. For example, the suction channel 141 is in an arched structure. The radial dimension of the suction channel 141 can be reduced without changing the cross-sectional area of ​​the entire suction channel 141, thereby making the suction channel 141 slightly flat in appearance, thereby ensuring that the structure of the suction channel 141 and the structure of the driving member 2 occupy a smaller space inside the entire shell 14, thereby reducing the radial dimension and volume of the entire shell 14, and improving the compactness of the entire power handle 1.

[0061] In this embodiment, by optimizing the structure of the suction channel 141 , the outer wall of the entire shell 14 can form a regular cylindrical curved surface structure, thereby facilitating the doctor's grip.

[0062] Optionally, the planer further includes a cable, and the power handle 1 is electrically connected to the main unit 3 via the cable, and the power handle 1 is connected to the cable via a first plug 16, and the first plug 16 is an aviation plug.

[0063] In this embodiment, the cable is used to electrically connect the power handle 1 and the host 3. In the case where the driving member 2 is a brushless DC motor, the cable is not only used by the host 3 to provide power to the brushless DC motor, but also to transmit control signals to the brushless DC motor, thereby realizing multiple state switching of the driving end of the brushless DC motor. Therefore, for the entire power handle 1, the first plug 16 is set as an aviation plug, which can enable the brushless DC motor and the cable to be connected in a plug-in manner, directly eliminating the connection end at the end of the power handle 1, avoiding complex welding procedures, further saving space for the power handle 1, thereby reducing the length of the entire power handle 1, and facilitating the doctor's grasping operation or performing surgical operations in the form of holding a pen.

[0064] Furthermore, one end of the cable away from the power handle 1 is electrically connected to the host 3 through a second plug, and the second plug is an aviation plug.

[0065] Specifically, the other end of the cable is electrically connected to the host 3 through a second plug. Similarly, the second plug can also be an aviation plug to ensure the universality and replaceability of the interface with the host 3.

[0066] The length of the existing power handle 1 is usually around 200 mm. Through the present application, the improved power handle 1 can be shortened to around 100 mm in length, and the overall volume will also be reduced accordingly, greatly improving the compactness of the entire power handle 1 structure, thereby facilitating doctors to expand a variety of holding methods during surgery.

[0067] The operation steps of this planer are as follows:

[0068] ① Before the operation begins, the power handle 1 needs to be sterilized in advance at 134°C and 2 standard atmospheric pressures for 10 minutes.

[0069] ② When starting the operation, first remove the sterile packaging and take out the knife head, the end of the inner knife is connected to the driving end inside the power handle 1, and the outer knife is clamped with the end of the power handle 1.

[0070] ③ Insert one end of the negative pressure suction tube into the connecting hole 142, connect the other end of the negative pressure suction tube to the negative pressure suction device, and start the negative pressure suction device.

[0071] ④ After completing other surgical preparations, the operation begins. Under the guidance of the endoscopic image, the blade is placed under the lesion, and the lesion tissue is attracted to the notch of the inner and outer blades by the negative pressure. The host 3 controls the internal drive member 2 of the power handle 1 to drive the inner blade to rotate. The doctor can further transmit an electrical signal to the host 3 through the switch button 11. The host 3 will control and adjust the rotation state of the drive member 2 according to the feedback information to perform adaptive resection. After the cutting is completed, the lesion tissue is discharged through the suction channel 141, the connecting hole 142 and the negative pressure suction tube in turn.

[0072] ⑤After the operation, remove the blade and discard it into the medical waste recycling bin.

[0073] ⑥ After cleaning, the power handle 1 is sent to a disinfection center for disinfection in preparation for subsequent surgery.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An endoscopic surgical planer, characterized in that: include: Blade head; A power handle (1), wherein a driving member (2) is provided in the power handle (1), wherein the driving member (2) is in transmission connection with the cutter head, and wherein a plurality of switch buttons (11) are provided on the power handle (1), wherein the plurality of switch buttons (11) are used to control the rotation state of the driving member (2); The host (3), the driving member (2) is electrically connected to the host (3), the switch button (11) and the host (3) are connected only through a wire signal, and the rotation state switching of the driving member (2) is completed through the on and off operations of the switch button (11).

2. The endoscopic surgical shaver according to claim 1, characterized in that: The cutter head comprises an inner cutter and an outer cutter, the inner cutter being in transmission connection with the driving member (2), and the outer cutter being clamped with the end of the power handle (1).

3. The endoscopic surgical shaver according to claim 2, characterized in that: The outer blade is provided with a slot, and the end of the power handle (1) is provided with a clamping protrusion (12), and the clamping protrusion (12) is inserted into and clamped in the slot.

4. The endoscopic surgical shaver according to claim 1, characterized in that: The plurality of switch buttons (11) are arranged in parallel with each other, and a recognition resistor (15) is connected to a branch of each switch button (11). The branches of the plurality of switch buttons (11) are collectively connected to a main conductor (13), and are connected to the host (3) via the main conductor (13).

5. The endoscopic surgical shaver according to claim 1, characterized in that: A plurality of switch buttons (11) are arranged in parallel, and a plurality of branches having the switch buttons (11) are respectively connected to the host (3).

6. The endoscopic surgical shaver according to claim 1, characterized in that: The power handle (1) comprises a shell (14), the switch button (11) is arranged on the outer wall of the shell (14), the switch button (11) comprises a button and a contact plate, and the switch button (11) is turned on by pressing the button and squeezing the contact plate.

7. The endoscopic surgical shaver according to claim 1, characterized in that: The power handle (1) comprises a shell (14), a suction channel (141) is provided inside the shell (14), and the suction channel (141) is used to connect a negative pressure suction tube so that tissue is sucked out through the suction channel (141); the suction channel (141) comprises a connecting hole (142) formed on the end surface of the shell (14), and the negative pressure suction tube is inserted into the connecting hole (142).

8. The endoscopic surgical shaver according to claim 7, characterized in that: The cross section of the suction channel (141) is in the shape of a curved strip, and the curved surface profile of the suction channel (141) matches the outer wall profile of the driving member (2).

9. The endoscopic surgical shaver according to claim 1, characterized in that: The endoscopic surgical shaver also includes a cable, and the power handle (1) is electrically connected to the host (3) via the cable. The power handle (1) is connected to the cable via a first plug (16), and the first plug (16) is an aviation plug.

10. The endoscopic surgical shaver according to claim 9, characterized in that: One end of the cable away from the power handle (1) is electrically connected to the main unit (3) via a second plug, and the second plug is an aviation plug.

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