Surgical operating instrument

Abstract

The utility model discloses a surgical operating instrument which comprises an actuator assembly, a gun barrel assembly and a handle assembly, the handle assembly comprises a main body and a grip, and the main body and the grip are in transition connection to form two first concave parts on the first side and the second side of the handle assembly which are symmetrical based on a symmetry plane; the main body and the grip are in transition connection to form a second concave part and a third concave part, in the axial direction of the gun barrel assembly, the second concave part is arranged away from the actuator assembly, and the third concave part is arranged close to the actuator assembly; wherein the central axis of the gun barrel assembly is located on the symmetry plane; on a projection plane which is perpendicular to the symmetry plane and parallel to the central axis, a first projection area, corresponding to the first concave part, of the main body on the projection plane completely falls into a second projection area, corresponding to the first concave part, of the grip on the projection plane. Therefore, the first concave part can support the fingers of the user, the supporting effect on the fingers is achieved, ergonomics is met, and the operation comfort of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a surgical instrument. Background Art

[0002] At present, minimally invasive surgery occupies an important position in surgical operations, and surgical instruments are commonly used in minimally invasive surgery. In clinical surgical operations, doctors need to perform critical opening operations on surgical instruments for fine tissue peeling and assistance. However, the current situation is that most of the above operations are performed using forceps instruments. Although forceps instruments are more flexible for doctors to operate, they can cause strain problems due to long-term fatigue and pressure on the hands.

[0003] Although the use of gun-type instruments can alleviate the problem of strain, it is more strenuous and unsmooth for doctors to operate, and the hand posture needs to be changed and swung, which can also cause fatigue and instability problems. Utility Model Content

[0004] In view of this, the utility model provides a surgical instrument.

[0005] The first aspect of the utility model provides a surgical instrument, comprising: an actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly through the barrel assembly; the handle assembly comprises a main body and a grip, and at a first side and a second side of the handle assembly symmetrically based on a symmetric plane, the main body and the grip are transitionally connected to form two first recessed portions, so that when a user holds the surgical instrument, the first recessed portions can be used to accommodate the user's fingers; the main body and the grip are also transitionally connected to form a second recessed portion and a third recessed portion, and along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetric plane;

[0006] On a projection plane perpendicular to the symmetry plane and parallel to the central axis, a first projection area of ​​the main body corresponding to the first recessed portion on the projection plane completely falls within a second projection area of ​​the handle corresponding to the first recessed portion on the projection plane.

[0007] The second aspect of the utility model provides a surgical instrument, comprising: an actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly through the barrel assembly; the handle assembly comprises a main body and a grip, and two first recessed portions are formed in the transition connection between the main body and the grip on the first side and the second side of the handle assembly which are symmetrical based on the symmetry plane, so that when the user holds the surgical instrument, the first recessed portion can be used to accommodate the user's fingers; the transition connection between the main body and the grip is also formed with a second recessed portion and a third recessed portion, and along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetry plane;

[0008] On a continuous section perpendicular to the central axis of the barrel assembly, when the section is located in the area corresponding to the first recessed portion, the raised point on the section line corresponding to the handle assembly that is the longest distance from the symmetry plane is located at the transition connection of the grip toward the first recessed portion.

[0009] The third aspect of the utility model provides a surgical instrument, comprising: an actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly through the barrel assembly; the handle assembly comprises a main body and a grip, and two first recessed portions are formed in the transition connection between the main body and the grip on the first side and the second side of the handle assembly which are symmetrical based on the symmetry plane, so that when the user holds the surgical instrument, the first recessed portions can be used to accommodate the user's fingers; the transition connection between the main body and the grip also forms a second recessed portion and a third recessed portion, and along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetry plane;

[0010] The first recessed portion further includes a first edge close to the handle and a second edge close to the body, the first recessed portion is formed between the first edge and the second edge, and the first edge is farther from the symmetry plane than the second edge.

[0011] A fourth aspect of the present invention provides a surgical instrument, comprising:

[0012] A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle;

[0013] An actuator assembly, comprising a first clamp head and a second clamp head, wherein the first clamp head and the second clamp head can pivot relative to each other to achieve opening or closing of the actuator assembly, and at least one of the first clamp head and the second clamp head is configured to process biological tissue;

[0014] A barrel assembly, comprising a pull rod and a pliers tube sleeved outside the pull rod, used to connect the actuator assembly and the handle, when the trigger moves relative to the handle, the pull rod moves axially under the drive of the trigger, and the actuator assembly moves under the action of the pull rod in a motion-matching relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other;

[0015] The handle has a first side and a second side that are substantially symmetrically arranged relative to a symmetry plane, and the central axis of the pull rod is located on the symmetry plane;

[0016] A first supporting structure is formed on the first side, and the first supporting structure is used to form a supporting force in a direction opposite to the force applied to the first supporting structure when the trigger moves relative to the handle, so as to support an object abutting against the first supporting structure;

[0017] The first supporting structure has a first edge close to the trigger, and the maximum distance between the first edge and the symmetry plane is the maximum distance between the outer surface of the first supporting structure and the symmetry plane.

[0018] A fifth aspect of the present invention provides a surgical instrument, comprising:

[0019] A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle;

[0020] An actuator assembly, comprising a first clamp head and a second clamp head, wherein the first clamp head and the second clamp head can pivot relative to each other to achieve opening or closing of the actuator assembly, and at least one of the first clamp head and the second clamp head is configured to process biological tissue;

[0021] A barrel assembly, comprising a pull rod and a pliers tube sleeved outside the pull rod, used to connect the actuator assembly and the handle, when the trigger moves relative to the handle, the pull rod moves axially under the drive of the trigger, and the actuator assembly moves under the action of the pull rod in a motion-matching relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other;

[0022] The handle has a first side and a second side that are substantially symmetrically arranged relative to a symmetry plane, and the central axis of the pull rod is located on the symmetry plane;

[0023] The side of the handle facing away from the actuator assembly is recessed toward the inside of the handle to form a second recessed portion for fitting with the base of the user's thumb. The second recessed portion has a contact surface for fitting with the base of the user's thumb. The contact surface has at least one tangent line parallel to the center axis on the section line of the symmetry plane to press against the corresponding position of the base of the user's thumb when the user holds the handle.

[0024] It can be seen from the above technical solution that the surgical instrument proposed in the utility model can support the user's fingers through the setting of the first recessed portion to provide support for the fingers, which is ergonomic, improves the user's operating comfort, maintains hand stability, and facilitates the user to perform terminal operations on human tissues, thereby avoiding fatigue, instability and other problems during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying creative labor.

[0026] Figure 1 It is a schematic diagram of the structure of the surgical instrument proposed in the embodiment of the utility model from a first perspective.

[0027] Figure 2 It is a second perspective structural schematic diagram of the surgical instrument proposed in the embodiment of the utility model.

[0028] Figure 3 It is a third-view structural diagram of the surgical instrument proposed in the embodiment of the utility model.

[0029] Figure 4 It is a structural schematic diagram of a handle assembly proposed in an embodiment of the utility model.

[0030] Figure 5 yes Figure 4 A partial enlarged schematic diagram of the structure shown.

[0031] Figure 6 It is a cross-sectional schematic diagram of a surgical instrument proposed in an embodiment of the utility model.

[0032] Figure 7 It is a schematic diagram of the use status of the surgical instrument when the user performs a distraction operation.

[0033] Figure 8 It is a structural schematic diagram of the deformation mode of the surgical instrument proposed in the embodiment of the utility model.

[0034] In the figure: 100, surgical instrument; 10, handle assembly; 11, handle; 11a, main body; 11b, grip; 111, first side; 112, second side; 113, mounting groove; 114, bottom surface; 115, convex bump; 12, trigger; 121, operating part; 1211, inner hole; 122, avoidance surface; 13, rotating shaft; 14, transmission member; 20, barrel assembly; 21, central axis; 30, actuator assembly; 31, first clamp head; 32, second clamp head; 40, first recessed portion; 40a, first supporting structure; 40b, second supporting structure; 41, first edge; 411, first sub-edge; 412, second sub-edge; 42, second edge; 43, anti-slip structure; 50, second recessed portion; 51, contact surface; 60, third recessed portion; 60a, index finger supporting structure; 61, extension portion; 70, operation button; 71, raised structure; AA, symmetry plane; BB, first projection area; CC, second projection area. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0037] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0038] See also Figure 1-Figure 4 As shown, the present application provides a surgical instrument 100, which is an instrument inserted into a patient's body to perform related surgical operations, such as performing terminal operations such as grasping, cutting, coagulation, separation or suturing. The surgical instrument 100 can be, for example, an intelligent bipolar, ultrasonic scalpel, electric scalpel or stapler.

[0039] The surgical instrument 100 generally includes a handle assembly 10 , a barrel assembly 20 and an actuator assembly 30 . The barrel assembly 20 includes a transmission chain connected to the actuator assembly 30 . The handle assembly 10 includes a handle 11 and a trigger 12 movably connected to the handle 11 .

[0040] When operating the surgical instrument 100, the operator can hold the handle 11 and extend the actuator assembly 30 into the lesion site in the human body through the slender barrel assembly 20. Then, the operator can operate the trigger 12 to perform an expansion operation or a retraction operation to trigger the excitation transmission chain or the closing transmission chain, so that the actuator assembly 30 can perform operations such as cutting, coagulation, separation or suturing of human tissue.

[0041] In an optional embodiment, the handle 11 is used for the user to hold, and the trigger 12 has an operating part 121 for the user's fingers to rest on. The operating part 121 is in a closed loop state and has an inner hole 1211 for the finger to insert. The front inner wall and the rear inner wall of the inner hole 1211 can be provided with an arc structure that fits the finger to facilitate the user's fingers to rest on when the user performs an expansion operation or a retraction operation. The user controls the operating part 121 to perform an expansion operation or a retraction operation by operating the finger to control the opening or closing of the actuator assembly 30.

[0042] Specifically, the actuator assembly 30 includes a first forceps head 31 and a second forceps head 32, which can pivot relative to each other to realize the opening or closing of the actuator assembly 30, and at least one of the first forceps head 31 and the second forceps head 32 is configured to process biological tissue. Exemplarily, the processing of biological tissue can be a processing in which energy from a surgical energy host is applied to the biological tissue, such as cutting by ultrasonic vibration or coagulation by bipolar or monopolar electrocoagulation, etc., or a processing in which no energy is applied to the biological tissue, such as suturing by a stapler, etc.

[0043] The barrel assembly 20 includes a pull rod and a pliers tube sleeved outside the pull rod, which is used to connect the actuator assembly 30 and the handle 11. When the trigger 12 moves relative to the handle 11, the pull rod moves axially under the drive of the trigger 12, and the actuator assembly 30 moves under the action of the pull rod in a motion-matching relationship with the trigger 12, so that the first pliers 31 and the second pliers 32 pivot relative to each other.

[0044] like Figure 3 and Figure 4 As shown, the handle 11 has a first side 111 and a second side 112 that are substantially symmetrically arranged relative to a symmetry plane AA, and the central axis 21 of the pull rod is located on the symmetry plane AA.

[0045] In an alternative embodiment, if Figure 3As shown, a first supporting structure 40a is formed on the first side 111. The first supporting structure 40a is used to form a supporting force in the opposite direction to the force applied to the first supporting structure 40a when the trigger 12 moves relative to the handle 11, so as to support the object abutting against the first supporting structure 40a. The first supporting structure 40a has a first edge 41 close to the trigger 12, and the first edge 41 is farther from the symmetry plane AA than other positions. That is, the maximum distance between the first edge 41 and the symmetry plane AA is the maximum distance between the outer surface of the first supporting structure 40a and the symmetry plane AA. In specific applications, other positions refer to any other positions on the outer surface of the handle 11 except the first supporting structure 40a, that is, the position where the first edge 41 is located is more protruding than other positions on the outer surface of the handle 11. The first edge 41 of the first supporting structure 40a close to the trigger 12 is set as a convex structure, so as to support the user's thumb and generate a reaction force when the thumb is pressed, providing force support to facilitate the user to perform terminal operations on human tissue and avoid fatigue, instability and other problems during operation.

[0046] For the convenience of explanation, Figure 1-Figure 4 Taking the surgical instrument 100 as an example, the first side 111 may be Figure 3 The left side of the middle handle 11, the second side 112 can be Figure 3 On the right side of the middle handle 11 , the side of the handle 11 facing the actuator assembly 30 is the front side, and the side of the handle 11 facing away from the actuator assembly 30 is the rear side.

[0047] The surgical instrument 100 of the embodiment of the present application can support the thumb through the first supporting structure 40a, so that the thumb joint of the user can be supported when holding the handle 11 to be in a natural bending state (such as Figure 7 As shown in the figure, the force support is provided when the user performs the spreading operation or the retracting operation, which is ergonomic and improves the user's comfort. In particular, when the user performs the spreading operation, the middle finger and the ring finger inserted into the operating portion 121 need to spread forward, and at this time, the thumb applies a force toward the rear side along the axial direction of the clamp tube (as shown in the figure). Figure 7 As shown in the figure, the finger inserted into the operating part 121 can open the trigger 12, and a reaction force opposite to the force applied by the user's thumb can be generated in the first direction through the first supporting structure 40a, that is, a reaction force of the backward force to maintain the stability of the hand, so as to facilitate the user to perform terminal operations on human tissues and avoid fatigue, instability and other problems during operation.

[0048] In some usage scenarios, the expansion operation needs to be slow and stable. If the first supporting structure 40a is not provided, it cannot provide a good auxiliary support and stable support for the doctor's expansion operation of the trigger 12, which will cause the doctor's operation to be laborious and unsmooth, and the hand posture changes and swings. For example, the thumb will slip because there is no fulcrum, thus affecting the expansion effect and hand stability, causing fatigue and instability, and also causing the actuator assembly 30 to shake, such as the shaking of the blade, which is a major pain point during surgery. Moreover, the arc of the hand movement will affect the doctor's hand sensory perception and visual linkage with the actuator assembly 30, increasing the risk during surgery.

[0049] The surgical instrument 100 of the embodiment of the present application supports the thumb through the setting of the first supporting structure 40a, so that the thumb is in a naturally bent state, and can provide a reaction force to the backward force to maintain stability, helping doctors to perform operations efficiently, flexibly and without burden during surgery. Compared with commonly used forceps-type instruments, it can avoid permanent occupational strain problems to a great extent. Compared with existing gun-type instruments, it effectively improves the stability and reliability of the trigger 12 action during surgery, avoids accidental injuries and risks during surgery, and brings doctors great operating confidence and health protection for patients.

[0050] In an alternative embodiment, if Figure 3 As shown, the first supporting structure 40a also includes a second edge 42, and the handle 11 forms a first recessed portion 40 between the first edge 41 and the second edge 42. The first recessed portion 40 is a continuous curved surface, and on a continuous section perpendicular to the axial direction of the barrel assembly 20, the distance a from the first edge 41 to the symmetry plane AA is greater than the distance b from the second edge 42 to the symmetry plane AA on the current section. Through the above arrangement, the first recessed portion 40 can fit the curvature of the thumb, which can not only provide better auxiliary support and stable support for the thumb of the user, but also the first recessed portion 40 is a continuous curved surface with smooth lines and a harmonious and beautiful appearance, which improves the user's experience. At the same time, the first edge 41 is more protruding than the first edge 41, so that the thumb of the user can be supported to support the thumb, which is ergonomic and improves the user's operating comfort.

[0051] In an alternative embodiment, if Figure 3 As shown, the second side 112 is formed with a second supporting structure 40b, and the first supporting structure 40a and the second supporting structure 40b are symmetrically arranged relative to the symmetry plane AA, that is, the first side 111 and the second side 112 of the handle 11 are both provided with a first recessed portion 40. Since the handle 11 is a symmetrical structure as a whole, not only is the appearance more coordinated and beautiful, but also users with different hand habits, that is, left-handed or right-handed users can use the surgical instrument 100 normally, and the application range is wide.

[0052] In an alternative embodiment, if Figure 1-Figure 4 As shown, the surfaces of the first supporting structure 40a and the second supporting structure 40b are both provided with an anti-skid structure 43 for contacting the thumb of the user. Exemplarily, the anti-skid structure 43 can be a plurality of protrusions or other anti-skid means for increasing friction, playing an anti-skid role and improving the force support effect for the thumb of the user.

[0053] In some embodiments, Figure 1-Figure 3 As shown, the entire handle assembly 10 is basically symmetrically arranged along the symmetry plane AA, and on this basis, the actuator assembly 30 is connected to the handle assembly 10 through the barrel assembly 20; the handle 11 includes a main body 11a and a grip 11b, along the height direction of the handle 11, the main body 11a is located on the upper side of the grip 11b, and on the first side 111 and the second side 112 of the handle assembly 10 that are symmetrical based on the symmetry plane AA, the main body 11a and the grip 11b are transitionally connected to form two first recessed portions 40, so that when the user holds the surgical instrument 100, the first recessed portion 40 can be used to accommodate the user's fingers; the main body 11a and the grip 11b are also transitionally connected to form a second recessed portion 50 and a third recessed portion 60, along the axial direction of the barrel assembly 20, the second recessed portion 50 is arranged away from the actuator assembly 30, and the third recessed portion 60 is arranged close to the actuator assembly 30; wherein the central axis 21 of the barrel assembly 20 is located on the symmetry plane AA. In specific operations, as Figure 7 As shown, when the user holds the handle 11, the second recessed portion 50 can be used to fit the user's base of the thumb, the first recessed portion 40 can be used to fit the user's thumb, and the third recessed portion 60 can be used to fit the user's index finger, which is ergonomic and improves the user's operating comfort.

[0054] In an alternative embodiment, if Figure 6 As shown, on the projection plane perpendicular to the symmetry plane AA and parallel to the central axis 21 of the barrel assembly 20, that is, the projection plane perpendicular to the height direction of the handle 11, the first projection area BB of the main body 11a corresponding to the first recessed portion 40 on the projection plane completely falls into the second projection area CC of the grip 11b corresponding to the first recessed portion 40 on the projection plane. That is, the first projection area BB can be less than or equal to the area of ​​the second projection area CC. As a result, the position of the handle 11 near the grip 11b in the first recessed portion 40 is the most protruding position on the outer surface of the entire handle 11, so that the user's fingers can be supported to support the fingers, which is ergonomic and improves the user's operating comfort.

[0055] In an optional embodiment, the area of ​​the first projection area BB is smaller than the area of ​​the second projection area CC; and the first projection area BB and / or the second projection area CC are axially symmetrical. In a preferred embodiment, the surface of the first recessed portion 40 may be provided with an anti-slip structure 43 to enhance the force support effect for the user's thumb. The anti-slip structure 43 is spread all over the surface of the first recessed portion 40 to Figure 6 The area in which the anti-slip structure 43 is provided is used to determine the range of the first recessed portion 40 on the projection surface, so that it can be seen that the area of ​​the first projection area BB is smaller than the area of ​​the second projection area CC, so that the position of the first recessed portion 40 close to the handle 11b can be convex, so as to support the thumb of the user, so as to support the thumb, conform to ergonomics, improve the operating comfort of the user, maintain the stability of the hand, facilitate the user to perform terminal operations on the human tissue, and avoid fatigue, instability and other problems during operation.

[0056] Among them, the first projection area BB and the second projection area CC can be symmetrical with respect to the projection line of the central axis 21 of the barrel assembly 20 on the projection plane, so that the handle 11 has a more coordinated and beautiful appearance, and can enable left-handed or right-handed users to use the surgical instrument 100 normally, with a wide range of applications.

[0057] In an optional embodiment, the first projection area BB and the second projection area CC are the areas where the main body 11a or the handle 11b falls. Figure 6 The portion within the DD area on the projection surface shown corresponds to the range of the first recessed portion 40. The first projection area is preferably the projection of the body 11a within the DD area, and the second projection area is preferably the projection of the handle 11b within the DD area.

[0058] In an alternative embodiment, if Figure 3 and Figure 4 As shown, on a continuous section perpendicular to the central axis 21 of the barrel assembly 20, when the section is located in the area corresponding to the first recessed portion 40, the convex point with the largest distance from the symmetry plane AA on the section line corresponding to the handle assembly 10 is located at the transition connection of the grip 11b toward the first recessed portion 40. That is, on any section perpendicular to the central axis 21 of the barrel assembly 20, the convex point with the largest distance from the symmetry plane AA, that is, the most convex point, is located at the edge where the first recessed portion 40 and the grip 11b are connected, so that the lower edge of the first recessed portion 40 connected to the grip 11b is convex as a whole, so that the entire thumb of the user can be supported to fit and support the thumb of the user, which is ergonomic, improves the user's operating comfort, maintains the stability of the hand, and facilitates the user to perform terminal operations on human tissues, avoiding fatigue and instability during operation.

[0059] In an alternative embodiment, if Figure 3 As shown, the first recessed portion 40 also includes a first edge 41 close to the grip 11b and a second edge 42 close to the body 11a. The first recessed portion 40 is formed between the first edge 41 and the second edge 42. The first edge 41 is farther from the symmetry plane AA than the second edge 42. That is, the maximum distance a between the first edge 41 and the symmetry plane AA is greater than the maximum distance b between the second edge 42 and the symmetry plane AA. This arrangement makes the first edge 41 convex, which can increase the contact area with the thumb, thereby better supporting the thumb and providing sufficient force support, providing a better auxiliary support and stable support for the user's operation of opening the trigger 12, and facilitating the user to perform terminal operations on human tissues, avoiding fatigue, instability and other problems during operation.

[0060] In an alternative embodiment, if Figure 4 As shown, the side of the handle 11 away from the actuator assembly 30 is also provided with a second recessed portion 50 that is recessed toward the inside of the handle 11, and the second recessed portion 50 is used to fit with the base of the thumb of the user; the first edge 41 includes a first sub-edge 411 and a second sub-edge 412, and the second sub-edge 412 extends obliquely from one end close to the second recessed portion 50 toward the trigger 12 to the first sub-edge 411, so as to cooperate with the outer surface of the handle 11 to form a continuous curved surface extending from the second recessed portion 50 toward the trigger 12. In this embodiment, the second sub-edge 412 can be tilted downward, and the position of the second sub-edge 412 toward the rear side is higher, and the direction toward the other end is gradually tilted downward, so that when the user holds the handle 11 and places the thumb on the first recessed portion 40, it can better fit the thumb, and can support the thumb joint of the user, so that the thumb is in a naturally bent state to facilitate force support, and can abut the thumb when the user performs the spreading operation to provide a reaction force of the backward force to maintain stability. When the user holds the handle 11, the thumb joint, the side surface and the fingertip of the thumb can naturally fit into the entire first recessed portion 40 to increase the contact area between the first recessed portion 40 and the thumb, increase the force-bearing surface, thereby improving stability, conforming to ergonomics, and improving the user's operating comfort.

[0061] For example, Figure 4 As shown, the first sub-edge 411 extends obliquely from one end close to the second sub-edge 412 to the other end in a direction away from the trigger 12, that is, the first sub-edge 411 extends obliquely upward from the rear side to the front side, and the inclination amplitude of the second sub-edge 412 is larger than that of the first sub-edge 411 to fit the natural bending state of the thumb, and the inclination amplitude of the first sub-edge 411 is smaller to fit the thumb while avoiding pressure on other fingers.

[0062] In an optional embodiment, the first sub-edge 411 extends to the front side of the handle 11. In this embodiment, the first sub-edge 411 is extended to the front side of the handle 11 and is gathered. In this embodiment, the front end of the first sub-edge 411 is gathered to fit the end of the thumb, so as to wrap the entire thumb of the user, increase the contact area with the thumb, improve the force support effect, and extend the axial length of the first recessed portion 40, so that users with longer thumbs can also fully fit the first recessed portion 40, increase the contact area and force support effect, and provide users with a comfortable grip experience.

[0063] In an alternative embodiment, if Figure 4 and Figure 5 As shown, the handle assembly 10 further includes an operation button 70, which is used to activate the surgical instrument 100 to control the actuator assembly 30 to process biological tissues; an index finger support structure 60a is also provided on the handle 11 adjacent to the operation button 70, and the index finger support structure 60a forms a third recessed portion 60, which is recessed toward the inside of the handle 11 and is used to support the user's finger. The side wall of the third recessed portion 60 close to the operation button 70 extends to form an extension portion 61, and the outer edge of the extension portion 61 toward the actuator assembly 30 is at least roughly flush with the outer edge of the operation button 70 toward the actuator assembly 30, so as to prevent the object located in the third recessed portion 60, that is, the user's finger, from sliding out from the edge to touch the operation button 70. In this embodiment, the outer edge of the extension portion 61 toward the actuator assembly 30 is at least roughly flush with the outer edge of the operation button 70 toward the actuator assembly 30. Therefore, not only can the user be smoother when the operation button 70 needs to be activated, but when the operation button 70 is not needed, the user's index finger can return to the third recessed portion 60 and be supported on the extension portion 61, and the overall structure is also more coordinated and beautiful in appearance.

[0064] For example, if the index finger supporting structure 60a is not provided, the user may easily touch the operation button 70 by mistake during use. In order to avoid accidentally touching the operation button 70, the user usually holds the index finger in the air, and moves the finger to press the operation button 70 when the operation button 70 needs to be triggered. Fatigue may easily occur after a long time. Therefore, in this embodiment, the index finger supporting structure 60a is provided to provide a support for the user's index finger, and the operation button 70 is provided below the index finger supporting structure 60a. This can avoid accidental touching of the operation button 70 while providing a support for the index finger, thereby improving the user's holding experience.

[0065] In an alternative embodiment, if Figure 5As shown, the operation button 70 may be provided with a raised structure 71, which is used for the index finger of the user to touch, so as to prompt that the index finger of the user has moved to the operation button 70. In this embodiment, when the operation button 70 needs to be activated, the index finger of the user can move down to the operation button 70, and at this time, the raised structure 71 will be touched, so as to play a prompting and positioning role, so that the user can accurately press the operation button 70. In addition, the provision of the raised structure 71 can not only facilitate the operator to press, but also increase friction to play an anti-slip role, so that the index finger can better exert force on the operation button 70.

[0066] In an optional embodiment, on a cross-section parallel to the axial direction of the barrel assembly 20 and perpendicular to the symmetry plane AA, the cross-sectional line of the handle assembly 10 at the second recessed portion 50 first contracts toward the inside of the handle assembly 10 to fit the user's base of thumb, and then expands toward the outside of the handle assembly 10, and the cross-sectional line geometry of the handle assembly 10 at the second recessed portion 50 changes continuously, so that the surface of the second recessed portion 50 is a smooth curve to fit the curvature of the hand. At this time, when the user holds the second recessed portion of the handle 11, the width between the thumb and index finger gradually increases from the base of thumb to the thumb joint in a natural state. Therefore, the above-mentioned arrangement can better fit the user's hand, increase the contact area between the hand and the handle 11 to maintain stability, conform to ergonomics, avoid gaps caused by insufficient fit, and enhance the user's holding experience.

[0067] In an alternative embodiment, if Figure 4 As shown, on the cross-sectional view of the symmetry plane AA, at least one tangent line on the cross-sectional line of the second recessed portion 50 is parallel to the central axis 21 of the barrel assembly 20. Specifically, the second recessed portion 50 has a contact surface 51 for fitting with the user's base of thumb; wherein, on the cross-sectional line of the cross-sectional view of the symmetry plane AA, at least one tangent line of the contact surface 51 is parallel to the central axis 21 of the barrel assembly 20, so as to press against the corresponding position of the user's base of thumb when the user holds the handle 11. Since the user may cause the handle 11 to swing continuously due to the change of hand posture during the operation of the instrument, at this time, the contact surface 51 can be directly pressed against the soft tissue part of the recessed base of the user's base of thumb, thereby increasing the contact area with the user's hand, so that the relative position of the handle 11 and the user's hand is more stable and will not change easily, thereby preventing the actuator assembly 30 from shaking.

[0068] In an optional embodiment, the second recessed portion 50 is disposed between the main body 11a and the grip 11b, and the grip 11b is disposed in cooperation with the trigger 12; the contact surface 51 is at least partially formed on the main body 11a; on a continuous section perpendicular to the central axis 21 of the barrel assembly 20, the section line formed by the portion of the contact surface 51 formed on the main body 11a gradually shortens in the direction away from the actuator assembly 30. In the direction away from the actuator assembly 30, the contact surface 51 has a gradually shrinking trend. So that the end of the main body 11a away from the actuator assembly 30 is a rounded triangle structure with a gradually decreasing diameter, so that it can not only adapt to the shape of the user's mouth, but also be convenient to press against the soft tissue part of the user's mouth, avoid compressing the hard joints at the base of the thumb and index finger during operation, and improve the stability of holding the handle 11, but also can reduce the volume of the handle 11, thereby reducing the weight of the instrument, which is conducive to the miniaturization of the instrument.

[0069] At the same time, the geometric shape of the cross-section line of the contact surface 51 changes continuously, and the contact surface 51 has a geometric continuity of no less than the first order, so that the surface of the part of the main body 11a where the contact surface 51 is set is smooth, which is convenient for fitting the user's hand and improving the user's operating comfort.

[0070] In an optional embodiment, the geometric shape of the second recessed portion 50 changes continuously so that the surface of the second recessed portion 50 is a smooth curve with flowing lines and a coordinated and beautiful appearance, so that the second recessed portion 50 better fits the curvature of the hand, conforms to ergonomics, and improves the operating comfort of the user.

[0071] In an optional embodiment, the first sub-edge 411 is configured to transition to the second sub-edge 412 in the form of a curve having a geometric continuity of not less than the first order, and the first sub-edge 411 and the second sub-edge 412 are curves having a geometric continuity of not less than the first order, respectively, so that the edge of the first recessed portion 40 is a smooth curve to fit the curvature of the hand, conform to ergonomics, and improve the user's operating comfort.

[0072] In an alternative embodiment, if Figure 4 and Figure 5 As shown in FIG. 1 , the minimum distance between the first edge 41 and the trigger 12 is smaller than the minimum distance between the extension 61 and the trigger 12. Figure 4 and Figure 7In the state shown, the position of the first edge 41 is lower than the position of the extension 61, so that when the user needs to press the operation button 70, the index finger can naturally press the operation button 70 in the front-to-back direction, which is parallel to the extension direction of the barrel assembly 20, which is convenient for operation and ergonomic. If the position of the extension 61 is set lower than the first edge 41, the index finger needs to bend downward when pressing the operation button 70, which will cause pressure and prevent the index finger from naturally pressing the operation button 70. The position of the trigger 12 is lower than the position of the first edge 41, which can ensure that when the first recessed portion 40 meets the support function, it will not cause pressure on the wrench. At the same time, the above-mentioned setting enables the index finger to naturally press the operation button 70, and other fingers can flexibly swing in the trigger 12, which is ergonomic.

[0073] In an optional embodiment, the position of the first edge 41 is lower than the position where the second recessed portion 50 fits with the user's thumb. Figure 4 and Figure 7 In the state shown, when the user holds the handle 11, the position of the base of the thumb is higher than the position where the thumb touches the first edge 41, so that the thumb can be supported on the first recessed portion 40 in a naturally bent state. This is convenient for operation and ergonomic.

[0074] In an alternative embodiment, if Figure 5 As shown, the maximum axial depth L1 of the third recessed portion 60 is 6 mm to 10 mm. Considering the use of male and female users, in order to leave enough space for placing fingers, the maximum axial depth L1 of the third recessed portion 60 is set within the range of 6 mm to 10 mm, so that fingers of different sizes can be supported.

[0075] For example, along the axial direction of the barrel assembly 20, the maximum recess depth L1 of the third recess 60 can be any value between 6 mm and 10 mm, such as 6 mm, 7 mm, 8 mm, 9 mm or 10 mm. Considering the comfort, if the recess depth of the third recess 60 for placing the finger is too small, it may affect the comfort of the user. Therefore, limiting it within the above range can better support the user's finger, and during the surgical operation, when pulling or grabbing biological tissue, it can better exert force in this area, and will not accidentally touch the operation button 70.

[0076] In an alternative embodiment, if Figure 4As shown, in the cross-sectional view of the symmetry plane AA, the angle R1 between the tangent at various locations on the cross-sectional line of the extension 61 and the axial direction of the barrel assembly 20 is between 20 degrees and 40 degrees. In a specific application, when the angle R1 between the tangent at a certain location on the cross-sectional line of the extension 61 and the axial direction of the barrel assembly 20 is less than 20 degrees, the user will feel uncomfortable when abutting against the extension 61, affecting the user's comfort, that is, 20 degrees is the critical point between comfort and discomfort. When the angle between the tangent at a certain location on the cross-sectional line of the extension 61 and the axial direction of the barrel assembly 20 is greater than 40 degrees, the user's index finger is easy to slip off the extension 61. Therefore, the angle between the tangent at various locations on the cross-sectional line of the extension 61 and the axial direction of the barrel assembly 20 is set between 20 degrees and 40 degrees to avoid the problems of slipping and discomfort.

[0077] In an optional embodiment, the angle between the tangent line at each position on the cross-section line of the extension part 61 and the axial direction of the barrel assembly 20 is between 30 degrees and 35 degrees. The angle between the tangent line at each position on the cross-section line of the extension part 61 and the axial direction of the barrel assembly 20 is further limited to between 30 degrees and 35 degrees, so that the user's fingers are not easy to slip off the extension part 61, and the user will not feel uncomfortable with the hand, which is ergonomic and improves the user's operating comfort.

[0078] For example, the angle R1 between the tangent line at each location on the cross-section line of the extension portion 61 and the axial direction of the barrel assembly 20 can be any value between 30 degrees and 35 degrees, such as 30 degrees, 31 degrees, 32 degrees, 33 degrees, 34 degrees or 35 degrees.

[0079] In an alternative embodiment, if Figure 4 and Figure 5 As shown, the geometric shape of the third recessed portion 60 changes continuously, that is, the third recessed portion 60 is constructed as a curved surface with a continuously changing geometric shape. The above configuration not only makes the outer surface of the handle 11 smooth, the appearance is coordinated and beautiful, and the user experience is improved. It is also convenient for the user to make the index finger fit the third recessed portion 60 as much as possible when holding the handle 11, which is ergonomic and improves the user experience.

[0080] In an optional embodiment, an active area is formed between the upper and lower ends of the third recessed portion 60 along the height direction of the handle 11, and the active area includes at least one index finger position for accommodating the index finger, so that the index finger has sufficient space to move up and down. Because the user's index finger will move unconsciously when performing an expansion operation or a retraction operation, an active area is formed between the upper and lower ends of the third recessed portion 60 to have sufficient space for the index finger to move up and down, so as to avoid accidentally touching the operation button 70.

[0081] In an alternative embodiment, if Figure 5As shown, the handle 11 is provided with a mounting groove 113 at a position below the extension portion 61, and the operation button 70 is accommodated in the mounting groove 113. In the present embodiment, the operation button 70 is arranged below the extension portion 61, and the operation button 70 is accommodated in a semi-enclosed manner through the arrangement of the mounting groove 113, so that the extension portion 61 protruding toward the front side is roughly flush with the outer wall of the operation button 70 protruding from the front side, which can not only prevent the operation button 70 from being accidentally touched, but also has a coordinated and beautiful appearance, thereby enhancing the user experience.

[0082] In an alternative embodiment, if Figure 1-Figure 4 As shown, the two first recessed parts 40 are connected to the second recessed part 50 and the third recessed part 60 on the first side 111 and the second side 112, respectively; and the geometric shapes between the first recessed part 40 and the second recessed part 50, and between the first recessed part 40 and the third recessed part 60, change continuously. The above arrangement not only makes the outer surface lines of the handle 11 smooth, the appearance is coordinated and beautiful, and the user's experience is improved. It is also convenient for the user to fit the thumb to the first recessed part 40, the base of the thumb to the second recessed part 50, and the index finger to the third recessed part 60 as much as possible when holding the handle 11, which is ergonomic and improves the user's experience.

[0083] In an alternative embodiment, if Figure 1-Figure 4 As shown, the first concave portion 40 of the first side 111, the second concave portion 50, the first concave portion 40 of the second side 112, and the third concave portion 60 are connected end to end to form a continuous curved surface with a continuously changing geometric shape. The above arrangement not only makes the outer surface of the handle 11 smooth and the appearance coordinated and beautiful, which improves the user's experience. It is also convenient for the user to hold the handle 11 so that it can fit all parts of the hand as much as possible, which is ergonomic and improves the user's experience.

[0084] In an alternative embodiment, if Figure 5 As shown, the end of the trigger 12 close to the operation button 70 also has an avoidance surface 122, and the avoidance surface 122 is inclined in a direction away from the operation button 70 to prevent the movement path of the trigger 12 from interfering with the movement path of the button. In this embodiment, since the third recessed portion 60 needs to be provided above the operation button 70, in order to avoid the compression of the space of the operation button 70, the avoidance surface 122 inclined downward is provided at the upper end of the trigger 12, thereby avoiding the operation button 70, so as to prevent the movement path of the trigger 12 from interfering with the movement path of the button, and facilitate the user to press the function button.

[0085] In an alternative embodiment, if Figure 5As shown, the handle 11 has a bottom surface 114 that matches the trigger 12, and the projection of the bottom surface 114 on the symmetry plane AA is tilted relative to the extension direction of the barrel assembly 20 to avoid the movement path of the trigger 12. In this embodiment, this arrangement allows the bottom surface 114 to be tilted upward to avoid interference with the operating part 121 of the wrench, and will not compress other hand positions. It should be particularly pointed out that the projections described in the embodiments of the present application are all orthographic projections, that is, after the projection plane is selected, an orthographic projection view is formed on the projection plane.

[0086] In an alternative embodiment, if Figure 1 and Figure 5 As shown, the first recessed portion 40 and the operating portion 121 are both close to the bottom surface 114, reducing the volume of the handle 11 so that the user's holding distance is maintained within an appropriate range, allowing the user to hold the handle for a long time without fatigue, and allowing the user to perform opening and closing operations.

[0087] In an alternative embodiment, if Figure 4 As shown, the handle assembly 10 also includes a rotating shaft 13, a transmission member 14 and a trigger 12. The rotating shaft 13 is arranged on the handle 11. The transmission member 14 has a first end and a second end opposite to each other. The first end is connected to the pull rod, and the second end is connected to the trigger 12. The transmission member 14 can rotate relative to the rotating shaft 13 and form a motion matching relationship with the pull rod; so that the trigger 12 moves around the rotating shaft 13, and controls the actuator assembly 30 to move through the pull rod of the barrel assembly 20. On the symmetry plane AA, the minimum distance L2 from the rotating shaft 13 to the central axis 21 is 15mm-25mm. Due to the lever principle, the distance L2 between the rotating shaft 13 and the central axis 21 is the power arm. The longer the power arm, the more labor-saving it is. Therefore, the minimum distance L2 from the rotating shaft 13 to the central axis 21 is set within the range of 15mm-25mm, so that the user can save more labor when operating the trigger 12 to control the actuator assembly 30 to open or close.

[0088] Specifically, a convex bump 115 may be provided on the top of the main body 11a, and the surface geometric shapes of the convex bump 115 and other parts of the top of the main body 11a continuously change, so that the outer surface of the handle 11 has smooth lines, a harmonious and beautiful appearance, and improves the user's experience. The rotation axis 13 is arranged inside the convex bump 115 to move the position of the rotation axis 13 upward, thereby extending the distance from the rotation axis 13 to the central axis 21, so that the user can save more effort when operating the trigger 12 to control the actuator assembly 30 to open or close.

[0089] Exemplarily, on the symmetry plane AA, the minimum distance from the rotation axis 13 to the central axis 21 can be any value between 15 mm and 25 mm, such as 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm or 25 mm.

[0090] In an alternative embodiment, if Figure 4 As shown, the tail of the main body 11a on the side facing away from the actuator assembly 30 can extend downward toward the handle 11b, and the contact surface 51 is located at the bottom of the tail. By placing the tail downward, not only the volume of the handle 11 can be reduced, but also the handle 11 can be pressed against the soft tissue at the base of the thumb when the user holds it, avoiding compression of the hard joints at the base of the thumb and index finger during operation, so that it can better fit the user's hand, improve the stability of holding the handle 11, and avoid shaking of the actuator assembly 30.

[0091] Of course, the extension direction of the tail of the main body 11a is not limited to the above settings. For example, in other embodiments, Figure 8 As shown, the tail of the main body 11a can also extend upward in a direction away from the grip 11b. In this embodiment, the tail of the main body 11a extends upward in an inclined manner to facilitate the user's grip.

[0092] Of course, in other embodiments, the tail of the main body 11a can also extend horizontally along the axial direction of the barrel assembly 20. In this embodiment, the tail of the main body 11a extends along the axial direction of the barrel assembly 20 to appropriately fit the user's hand and facilitate the user to hold it.

[0093] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A surgical instrument comprising: An actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly via the barrel assembly; the handle assembly comprises a main body and a grip, wherein on a first side and a second side of the handle assembly being symmetrical based on a symmetric plane, the main body and the grip are transitionally connected to form two first recessed portions, so that when a user holds the surgical instrument, the first recessed portions can be used to accommodate the user's fingers; the main body and the grip are also transitionally connected to form a second recessed portion and a third recessed portion, wherein along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetric plane; and characterized in that, On a projection plane perpendicular to the symmetry plane and parallel to the central axis, the main body corresponding to the first recessed portion in a first projection area on the projection plane completely falls into a second projection area of ​​the handle corresponding to the first recessed portion on the projection plane.

2. The surgical instrument according to claim 1, characterized in that: The area of ​​the first projection area is smaller than that of the second projection area; and the first projection area and / or the second projection area are axisymmetric figures.

3. The surgical instrument according to claim 1, wherein: The second recessed portion is used to fit into the base of the user's thumb; on a cross-section parallel to the axial direction and perpendicular to the symmetry plane, a section line of the handle assembly at the second recessed portion first contracts toward the inside of the handle assembly and then expands toward the outside of the handle assembly, and the geometric shape of the section line of the handle assembly at the second recessed portion changes continuously.

4. The surgical instrument according to claim 3, characterized in that: In the cross-sectional view of the symmetry plane, at least one tangent line on the cross-sectional line of the second recessed portion is parallel to the central axis.

5. The surgical instrument according to claim 3, characterized in that: A contact surface is also provided on the second recessed portion, and the contact surface is at least partially formed on the main body; and on a continuous cross-section perpendicular to the central axis of the barrel assembly, a section line of the contact surface formed on the main body gradually shortens in a direction away from the actuator assembly; and a geometric shape of the section line of the contact surface changes continuously.

6. The surgical instrument according to any one of claims 1 to 5, characterized in that: The geometric shape of the second recessed portion changes continuously.

7. The surgical instrument according to claim 1, wherein: The handle assembly further includes an operation button, and the third recessed portion is disposed adjacent to the operation button and is used to support the user's fingers; wherein, The third recessed portion extends from the side wall close to the operation button to form an extension portion, and the outer edge of the extension portion toward the actuator assembly is at least roughly flush with the outer edge of the operation button toward the actuator assembly to prevent the user's finger from slipping out from the edge and touching the operation button.

8. The surgical instrument according to claim 7, characterized in that: The maximum recessed depth of the third recessed portion in the axial direction is 6 mm-10 mm.

9. The surgical instrument according to claim 7, characterized in that: In the cross-sectional view of the symmetry plane, the angle between the tangent line at each location on the cross-sectional line of the extension portion and the axial direction is between 20 degrees and 40 degrees.

10. The surgical instrument according to any one of claims 7 to 9, characterized in that: The geometric shape of the third recessed portion changes continuously.

11. The surgical instrument according to any one of claims 1-5, 7-8, characterized in that: The two first recessed portions are connected to the second recessed portion and the third recessed portion at the first side and the second side respectively; and the geometric shapes between the first recessed portion and the second recessed portion, and between the first recessed portion and the third recessed portion, continuously change.

12. The surgical instrument according to claim 11, wherein: The first recessed portion on the first side, the second recessed portion, the first recessed portion on the second side, and the third recessed portion are connected end to end in sequence to form a continuous curved surface whose geometric shape changes continuously.

13. The surgical instrument according to any one of claims 1-5, 7-8, wherein the handle assembly further comprises a rotation axis and a trigger, the trigger moves around the rotation axis and controls the movement of the actuator assembly through the pull rod of the barrel assembly, characterized in that: On the symmetry plane, the minimum distance from the rotation axis to the central axis is 15 mm-25 mm.

14. A surgical instrument comprising: An actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly via the barrel assembly; the handle assembly comprises a main body and a grip, and two first recessed portions are formed at the transition connection between the main body and the grip on the first side and the second side of the handle assembly being symmetrical based on a symmetric plane, so that when a user holds the surgical instrument, the first recessed portion can be used to accommodate the user's fingers; a second recessed portion and a third recessed portion are also formed at the transition connection between the main body and the grip, and along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetric plane; it is characterized in that, On a continuous section perpendicular to the central axis of the barrel assembly, when the section is located in the area corresponding to the first recessed portion, the raised point on the section line corresponding to the handle assembly that is the longest distance from the symmetry plane is located at the transition connection of the grip toward the first recessed portion.

15. The surgical instrument according to claim 14, characterized in that The second recessed portion is used to fit the base of the user's thumb; On a cross section parallel to the axial direction and perpendicular to the symmetry plane, a cross section line of the handle assembly at the second recessed portion first contracts toward the inside of the handle assembly and then expands toward the outside of the handle assembly, and a geometric shape of the cross section line of the handle assembly at the second recessed portion changes continuously; In the cross-sectional view of the symmetry plane, at least one tangent line on the cross-sectional line of the second recessed portion is parallel to the axial direction.

16. The surgical instrument according to claim 14, wherein: The second recessed portion is arranged between the main body and the grip, and is away from the actuator assembly in the axial direction; a contact surface is also provided on the second recessed portion, and the contact surface is at least partially formed on the main body; and on a continuous cross-section perpendicular to the central axis of the barrel assembly, a section line of the contact surface formed on the main body gradually shortens in a direction away from the actuator assembly; and a geometric shape of the section line of the contact surface changes continuously.

17. The surgical instrument according to claim 14, wherein: The handle assembly further includes an operation button, and the third recessed portion is axially disposed adjacent to the operation button and is used to support the user's fingers; wherein, The third recessed portion extends from the side wall close to the operation button to form an extension portion, and the outer edge of the extension portion toward the actuator assembly is at least roughly flush with the outer edge of the operation button toward the actuator assembly to prevent the user's finger from slipping out from the edge and touching the operation button.

18. A surgical instrument comprising: An actuator assembly, a barrel assembly and a handle assembly, wherein the actuator assembly is connected to the handle assembly via the barrel assembly; the handle assembly comprises a main body and a grip, and two first recessed portions are formed at the transition connection between the main body and the grip on the first side and the second side of the handle assembly being symmetrical based on a symmetric plane, so that when a user holds the surgical instrument, the first recessed portion can be used to accommodate the user's fingers; a second recessed portion and a third recessed portion are also formed at the transition connection between the main body and the grip, and along the axial direction of the barrel assembly, the second recessed portion is arranged away from the actuator assembly, and the third recessed portion is arranged close to the actuator assembly; wherein the central axis of the barrel assembly is located on the symmetric plane; it is characterized in that, The first recessed portion further includes a first edge close to the handle and a second edge close to the body, the first recessed portion is formed between the first edge and the second edge, and the first edge is farther from the symmetry plane than the second edge.

19. The surgical instrument according to claim 18, wherein: The second recessed portion is used to fit the base of the user's thumb; On a cross section parallel to the axial direction and perpendicular to the symmetry plane, a cross section line of the handle assembly at the second recessed portion first contracts toward the inside of the handle assembly and then expands toward the outside of the handle assembly, and a geometric shape of the cross section line of the handle assembly at the second recessed portion changes continuously; In the cross-sectional view of the symmetry plane, at least one tangent line on the cross-sectional line of the second recessed portion is parallel to the axial direction.

20. The surgical instrument of claim 18, wherein: The second recessed portion is arranged between the main body and the grip, axially away from the actuator assembly; a contact surface is also provided on the second recessed portion, and the contact surface is at least partially formed on the main body; and on a continuous cross-section perpendicular to the central axis of the barrel assembly, a section line of the contact surface formed on the main body gradually shortens in a direction away from the actuator assembly; and a geometric shape of the section line of the contact surface changes continuously.

21. The surgical instrument of claim 18, wherein: The handle assembly further includes an operation button, and the third recessed portion is axially disposed adjacent to the operation button and is used to support the user's fingers; wherein, The third recessed portion extends from the side wall close to the operation button to form an extension portion, and the outer edge of the extension portion toward the actuator assembly is at least roughly flush with the outer edge of the operation button toward the actuator assembly to prevent the user's finger from slipping out from the edge and touching the operation button.

22. A surgical instrument, characterized in that: include: A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle; An actuator assembly, comprising a first clamp head and a second clamp head, wherein the first clamp head and the second clamp head can pivot relative to each other to achieve opening or closing of the actuator assembly, and at least one of the first clamp head and the second clamp head is configured to process biological tissue; A barrel assembly, comprising a pull rod and a pliers tube sleeved outside the pull rod, used to connect the actuator assembly and the handle, when the trigger moves relative to the handle, the pull rod moves axially under the drive of the trigger, and the actuator assembly moves under the action of the pull rod in a motion-matching relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other; The handle has a first side and a second side that are substantially symmetrically arranged relative to a symmetry plane, and the central axis of the pull rod is located on the symmetry plane; A first supporting structure is formed on the first side, and the first supporting structure is used to form a supporting force in a direction opposite to the force applied to the first supporting structure when the trigger moves relative to the handle, so as to support an object abutting against the first supporting structure; The first supporting structure has a first edge close to the trigger, and the maximum distance between the first edge and the symmetry plane is the maximum distance between the outer surface of the first supporting structure and the symmetry plane.

23. The surgical instrument of claim 22, wherein: The first supporting structure also includes a second edge, and the handle forms a first recessed portion between the first edge and the second edge. The first recessed portion is a continuous curved surface, and in a continuous section perpendicular to the axial direction of the barrel assembly, a distance from the first edge to the symmetry plane is greater than a distance from the second edge to the symmetry plane in the current section.

24. The surgical instrument of claim 22, wherein: A second supporting structure is formed on the second side, and the first supporting structure and the second supporting structure are symmetrically arranged relative to the symmetric plane.

25. The surgical instrument of claim 22, wherein: A second recessed portion that is recessed toward the inner side of the handle is further provided on a side of the handle that is away from the actuator assembly, and the second recessed portion is used to fit with the base of the thumb of the user; The first edge includes a first sub-edge and a second sub-edge, and the second sub-edge extends obliquely from an end close to the second recessed portion toward the trigger to the first sub-edge to cooperate with the outer surface of the handle to form a continuous curved surface extending from the second recessed portion toward the trigger.

26. The surgical instrument of claim 25, wherein: On a cross section parallel to the axial direction and perpendicular to the symmetry plane, the cross section line of the handle assembly at the second recessed portion first contracts toward the inside of the handle and then expands toward the outside of the handle, and the geometric shape of the cross section line of the handle at the second recessed portion changes continuously.

27. The surgical instrument according to claim 25 or 26, characterized in that: The second recessed portion has a contact surface for fitting with the base of the user's thumb; wherein, the contact surface has at least one tangent line parallel to the axial direction of the barrel assembly on the section line of the symmetric plane section view.

28. The surgical instrument according to claim 25 or 26, characterized in that: The first sub-edge is constructed to transition to the second sub-edge in the form of a curve having a geometric continuity of no less than first order, and the first sub-edge and the second sub-edge are respectively curves having a geometric continuity of no less than first order.

29. The surgical instrument of claim 22, wherein: The surgical instrument further comprises an operation button disposed on the handle, wherein the operation button is used to activate the surgical instrument to control the actuator assembly to process biological tissue; An index finger support structure is also provided on the handle adjacent to the operation button, and the index finger support structure is formed with a third recessed portion, and the third recessed portion is recessed toward the inner direction of the handle; The third recessed portion extends from the side wall close to the operating button to form an extension portion, and the outer edge of the extension portion toward the actuator assembly is at least roughly flush with the outer edge of the operating button toward the actuator assembly to prevent the user's finger from slipping out from the edge and touching the operating button.

30. The surgical instrument of claim 29, wherein: A minimum distance between the first edge and the trigger is smaller than a minimum distance between the extension portion and the trigger.

31. The surgical instrument of claim 29, wherein: The third recessed portion is configured as a curved surface with a continuously changing geometric shape.

32. The surgical instrument of claim 29, wherein: The trigger also has an avoidance surface at one end close to the operation button, and the avoidance surface is inclined in a direction away from the operation button to prevent the movement path of the trigger from interfering with the movement path of the button; and / or, The handle has a bottom surface matched with the trigger, and the projection of the bottom surface on the symmetry plane is arranged to be inclined relative to the extension direction of the barrel assembly to avoid the movement path of the trigger.

33. The surgical instrument according to any one of claims 22-26, 29-32, characterized in that: The surface of the first supporting structure is provided with an anti-slip structure.

34. The surgical instrument according to any one of claims 22-26, 29-32, characterized in that: The surgical instrument further comprises: A rotating shaft, arranged on the handle; a transmission member having a first end and a second end opposite to each other, wherein the first end is connected to the pull rod, and the second end is connected to the trigger, and the transmission member can rotate relative to the rotation axis and form a motion matching relationship with the pull rod; Wherein, on the symmetry plane, the distance from the rotation axis to the central axis is 15mm-25mm.

35. A surgical instrument, characterized in that: include: A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle; An actuator assembly, comprising a first clamp head and a second clamp head, wherein the first clamp head and the second clamp head can pivot relative to each other to achieve opening or closing of the actuator assembly, and at least one of the first clamp head and the second clamp head is configured to process biological tissue; A barrel assembly, comprising a pull rod and a pliers tube sleeved outside the pull rod, used to connect the actuator assembly and the handle, when the trigger moves relative to the handle, the pull rod moves axially under the drive of the trigger, and the actuator assembly moves under the action of the pull rod in a motion-matching relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other; The handle has a first side and a second side that are substantially symmetrically arranged relative to a symmetry plane, and the central axis of the pull rod is located on the symmetry plane; The side of the handle facing away from the actuator assembly is recessed toward the inside of the handle to form a second recessed portion for fitting with the base of the user's thumb. The second recessed portion has a contact surface for fitting with the base of the user's thumb. The contact surface has at least one tangent line parallel to the center axis on the section line of the symmetry plane to press against the corresponding position of the base of the user's thumb when the user holds the handle.

36. The surgical instrument of claim 35, wherein: The handle further comprises a main body and a grip, the second recessed portion is arranged between the main body and the grip, and the grip is arranged in cooperation with the trigger; The contact surface is partially formed on the main body; in a continuous cross section perpendicular to the axial direction of the clamp tube, a cross section line formed by the portion of the contact surface formed on the main body gradually shortens in a direction away from the actuator assembly; Furthermore, the contact surface has a geometric continuity of no less than first order.

Images