CN221730692U - Surgical instrument - Google Patents

Abstract

The application discloses a surgical instrument which comprises a handle assembly, a binding clip assembly, a forceps tube assembly and an operation button, wherein the handle assembly comprises a handle and a trigger. The clamp tube assembly is used for connecting the clamp head assembly and the handle. The operating key is arranged on the handle and is used for being pressed by an index finger of an operator so as to control the clamp head assembly to treat biological tissues. The handle is equipped with forefinger bearing structure in being close to operation button department, and forefinger bearing structure is formed with interior concave part and extension, and interior concave part is set up from the direction concave part of handle surface toward the handle inboard, and the extension is towards the direction protrusion setting in the handle outside, and the extension is located between interior concave part and the operation button. The setting through forefinger bearing structure can avoid the operator to perk for a long time and indicate tired, and the operator's finger can butt concave part inner wall and support on the extension, makes things convenient for the finger to put forth effort, and the extension can prevent that the operator from touching the operation button by mistake for the operator can control the apparatus better.

Description

Surgical instruments

Technical Field

The present application relates to the technical field of medical instruments, and in particular to a surgical instrument.

Background Art

At present, minimally invasive surgery occupies an important position in surgical operations, and surgical instruments are commonly used in minimally invasive surgery. Among the existing surgical instruments, most of the buttons for activating functions are located at the front end of the instrument, and the buttons need to be operated directly during clinical operations. This can easily cause the problem of accidental button touches. During the operation, if the buttons are accidentally activated when grasping and pulling the patient's tissue, healthy tissues and blood vessels will be burned, and the damage to the patient is irreversible, which will increase the risk of surgery.

In order to avoid accidentally touching the keys, many doctors will try to lift their index fingers to avoid putting force around the keys. Although this can temporarily avoid the accidental triggering of the operation, for doctors, if they keep their fingers lifted for a long time, fatigue will increase sharply. Moreover, after a certain period of fatigue accumulated during the operation, most doctors will unconsciously relax their fingers and put them around the keys again, which still poses the risk of accidental triggering in subsequent operations.

Utility Model Content

In view of this, the present application proposes a surgical instrument.

The present application proposes a surgical instrument, comprising:

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

A pliers head assembly having a kinematically coordinated relationship with the trigger, so that the trigger can drive the pliers head assembly to open or close when it moves relative to the handle;

A clamp tube assembly, used to connect the clamp head assembly and the handle;

An operation button, provided on the handle, for being pressed by an operator's index finger to control the forceps head assembly to process biological tissue;

Among them, the handle is provided with an index finger supporting structure near the operation button, and the index finger supporting structure is formed with an inner recess and an extension portion, the inner recess is recessed from the handle surface toward the inner side of the handle, the extension is protruded toward the outer side of the handle, and the extension is located between the inner recess and the operation button.

It can be seen from the above technical solution that the surgical instrument proposed in the present application can be used to support the index finger of the operator through the setting of the index finger supporting structure, thereby preventing the operator from being fatigued by lifting his fingers for a long time. The operator's fingers can abut against the inner wall of the recessed portion and be supported on the extended portion, which is convenient for the operator's fingers to exert force. At the same time, the obstruction of the extended portion can prevent the operator from accidentally touching the operation buttons, thereby enabling the operator to better control the instrument during the operation.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

FIG. 1 is a schematic diagram of the structure of a surgical instrument proposed in an embodiment of the present application.

FIG. 2 is a side view of the handle assembly proposed in the embodiment of the present application, showing that the extension portion of the index finger support structure is arranged flush with the operation button.

FIG. 3 is a side view of the handle assembly proposed in the embodiment of the present application, showing that the extension portion of the index finger support structure is protruding compared to the operation button.

FIG. 4 is a partial enlarged schematic diagram of the structure shown in FIG. 3 .

FIG. 5 is a side view of the handle assembly according to an embodiment of the present application, showing the arrangement of the second protrusion structure.

FIG6 is a side view of the handle assembly proposed in the embodiment of the present application, showing the arrangement of the second protrusion structure and the arrangement in which the lower end of the operation button protrudes more than the upper end.

FIG. 7 is a schematic diagram of a scene in which the handle assembly proposed in an embodiment of the present application is held in the hand of an operator.

FIG8 is a schematic diagram of the structure of the handle assembly proposed in an embodiment of the present application, which shows the arrangement of the first protrusion structure and the second protrusion structure.

FIG. 9 is a schematic diagram of the structure of the handle assembly proposed in an embodiment of the present application, which shows the arrangement of the second protrusion structure.

Description of reference numerals:

100. Surgical instrument; 10. Handle assembly; 11. Handle; 12. Trigger; 121. Avoidance surface; 13. Rotating wheel; 20. Forceps head assembly; 21. First forceps head; 22. Second forceps head; 30. Forceps tube assembly; 40. Operation button; 41. Second protruding structure; 50. Index finger supporting structure; 51. Inner recess; 52. Extension; 521. First protruding structure; 60. Holding structure.

DETAILED DESCRIPTION

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

It should be understood that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

It should also be understood that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

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

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

The present application provides a surgical instrument, which is an instrument that is 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 can be, for example, an intelligent bipolar, ultrasonic scalpel, electric scalpel or stapler.

Referring to FIGS. 1 to 3 , the present application provides a surgical instrument 100, including a handle assembly 10, a forceps assembly 20, a forceps tube assembly 30 and an operation button 40. The handle assembly 10 includes a handle 11 for holding and a trigger 12 that can move relative to the handle 11. The forceps assembly 20 and the trigger 12 have a motion matching relationship, so that the trigger 12 can drive the forceps assembly 20 to open or close when it moves relative to the handle 11. The forceps tube assembly 30 is used to connect the forceps assembly 20 and the handle 11. The operation button 40 is arranged on the handle 11, and the operation button 40 is used for the operator's index finger to press to control the forceps assembly 20 to process biological tissue. When operating the surgical instrument 100, the operator can hold the handle 11 and extend the forceps assembly 20 into the lesion site in the human body through the slender forceps tube assembly 30. The trigger 12 is then operated to move relative to the handle 11, thereby driving the forceps head assembly 20 to open or close to clamp the biological tissue in a preset area, and then the operation button 40 is pressed by the index finger to cause the forceps head assembly 20 to cut, coagulate, separate or sew the human tissue, so that the forceps head assembly 20 can process the biological tissue in the preset area without affecting other tissue areas.

The handle 11 is provided with an index finger support structure 50 near the operation button 40. The index finger support structure 50 is formed with an inner recess 51 and an extension 52. The inner recess 51 is recessed from the surface of the handle 11 toward the inner side of the handle 11, and the extension 52 is protruded toward the outer side of the handle 11, and the extension 52 is located between the inner recess 51 and the operation button 40. When the operation button 40 does not need to be pressed, the operator's index finger can be placed at any position of the index finger support structure 50, which can be attached to the recess of the inner recess 51, or partially attached to the inner recess 51 and partially supported on the extension 52, or partially supported on the extension 52 and partially suspended without touching the operation button 40.

The surgical instrument 100 proposed in the embodiment of the present application can be used to support the operator's index finger through the provision of the index finger support structure 50, thereby preventing the operator from being tired due to lifting the finger for a long time. The operator's finger can abut the inner wall of the inner recess 51 and be supported on the extension portion 52, which is convenient for the operator's finger to exert force. At the same time, the obstruction of the extension portion 52 can prevent the operator from accidentally touching the operation button 40, so that the operator can better control the instrument and treat the lesion during the operation. When only grabbing, dragging, and separating tissues are needed, the operator can trust the instrument, exert force well, and relax the tense muscles of the hand without worrying about accidentally touching the operation button 40 to cause intraoperative risks to the patient. At the same time, when it is necessary to control the forceps head assembly 20 to treat biological tissue, the operation button 40 can be pressed, giving the operator a better sense of control.

In some embodiments, as shown in FIG1 , the forceps assembly 20 includes a first forceps 21 and a second forceps 22, and the first forceps 21 and the second forceps 22 can pivot relative to each other to achieve the opening or closing of the forceps assembly 20, and at least one of the first forceps 21 and the second forceps 22 is configured to be able to process biological tissue. Exemplarily, the processing of biological tissue can be a process 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 process in which no energy is applied to the biological tissue, such as suturing by a stapler, etc.

In some embodiments, the clamp tube assembly 30 includes a pull rod and a clamp tube sleeved outside the pull rod, one end of the clamp tube is hinged to the first clamp head 21, the other end of the clamp tube is connected to the handle 11 through the rotating wheel 13, one end of the pull rod is hinged to the second clamp head 22, and the other end of the pull rod has a motion matching relationship with the trigger 12. When the trigger 12 moves relative to the handle 11, the clamp head assembly 20 moves under the action of the pull rod having a motion matching relationship with the trigger 12, so that the first clamp head 21 and the second clamp head 22 are relatively pivoted, thereby realizing the opening or closing of the clamp head assembly 20.

For example, as shown in FIG. 1 , the “length direction” in the embodiment of the present application refers to the front-to-back direction when the surgical instrument 100 is operated, that is, the extension direction of the clamp assembly 30. The “width direction” refers to the left-right direction when the surgical instrument 100 is operated, that is, the direction perpendicular to the length direction in the horizontal direction. The “height direction” refers to the up-down direction when the surgical instrument 100 is operated, that is, the direction perpendicular to both the “length direction” and the “width direction”.

In some embodiments, as shown in FIG3 and FIG4 , the end of the extension portion 52 facing the outside of the handle 11 and the end of the inner recess 51 facing the inside of the handle 11 are separated by a first distance L1, and the first distance L1 is less than or equal to 10 mm. In this embodiment, considering the use of male and female operators, in order to leave enough space for placing fingers, the length of the area for accommodating fingers is set within a range of no more than 10 mm in the length direction of the surgical instrument 100, so that fingers of different sizes can be supported.

For example, the length of the area for accommodating fingers can be set to any value between 5 mm and 10 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. Considering comfort, if the length of the area for placing fingers is too small, it may affect the comfort of the operator. Therefore, limiting it within the above range can better support the operator's fingers. During the surgical operation, when pulling or grabbing biological tissue, it can better apply force in the area, and will not accidentally touch the operation button 40.

In some embodiments, as shown in FIG2 , the edge of the extension portion 52 is flush with the outer surface of the operation button 40 near the extension portion 52. In this embodiment, the edge of the extension portion 52 can be flush with the outer surface of the operation button 40, so that not only the operator can activate the operation button 40 smoothly when the operator needs to activate the operation button 40, but also the operator's index finger can return to the receiving groove and support on the extension portion 52 when the operation button 40 is not needed, and the overall structure is more coordinated and beautiful in appearance.

Of course, in order to better achieve the effect of preventing accidental touch, in other embodiments, as shown in FIG. 3 and FIG. 4 , the extension portion 52 may also be set more protruding than the operation button 40, that is, the edge of the extension portion 52 is set to be a second distance L2 from the outer surface of the operation button 40 close to the extension portion 52, and the second distance L2 is less than or equal to 1 mm. In this embodiment, in the length direction of the surgical instrument 100, the protruding length of the extension portion 52 compared to the operation button 40 is set within 1 mm, which can not only better achieve the effect of preventing accidental touch, but also when the operator needs to activate the operation button 40, there is less obstruction, which will not affect the activation of the operation button 40.

For example, the protruding length of the extension portion 52 relative to the operation button 40 can be set to any value between 0.1 mm and 1 mm, such as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc.

In some embodiments, as shown in Figures 2 and 5, the outer surface of the operation button 40 can be a relatively flat arc surface, that is, from a side view, the outer surface of the side of the operation button 40 facing outward is relatively flat. At this time, the edge of the extension portion 52 can be roughly flush with the outer surface of the operation button 40, or can be more protruding than the outer surface of the operation button 40.

Of course, in other embodiments, as shown in FIG. 6 , the lower end of the operation button 40 may also be arranged to protrude toward the outside of the handle 11, that is, from a side view, the end of the operation button 40 facing outward is a curve bent outward. At this time, the edge of the extension portion 52 may be flush with the outer surface of the upper end of the operation button 40, or may be arranged to protrude more than the outer surface of the upper end of the operation button 40, and the lower end of the operation button 40 may be arranged to protrude more than the edge of the extension portion 52, thereby facilitating the index finger to support on the protruding position of the operation button 40, so as to apply force to press the operation button 40.

In some embodiments, as shown in FIGS. 2 to 6 , the index finger support structure 50, the operation button 40 and the trigger 12 are sequentially arranged along a first direction, and the first direction is perpendicular to the extension direction of the clamp tube assembly 30. In this embodiment, the first direction is also the height direction of the surgical instrument 100, and the index finger support structure 50, the operation button 40 and the trigger 12 are sequentially arranged from top to bottom, so that when the operator holds the handle 11, the index finger can be supported on the index finger support structure 50, and the remaining fingers can be placed on the trigger 12, so as to conveniently operate the trigger 12 to control the clamp head assembly 20. The index finger support structure 50 is arranged above the operation button 40 to facilitate supporting the index finger of the operator. When the operator needs to activate the operation button 40, the index finger can directly move downward to move to the operation button 40 more smoothly for operation, which is ergonomic, improves the operator's comfort, and improves the operation efficiency.

In some embodiments, as shown in FIG4 , the height L3 of the index finger support structure 50 in the first direction is 15 mm to 25 mm. In this embodiment, in the height direction of the surgical instrument 100, the height L3 of the index finger support structure 50 is set within the range of 15 mm to 25 mm, such as 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, etc., so that enough space can be left to accommodate the operator's index finger, increase the space of the index finger's force point, and not interfere with the operation of the operating button 40 and the trigger 12. In addition, since the operator's index finger will move unconsciously when operating the trigger 12, the index finger support structure 50 is left with enough space for the index finger to move up and down, so as to avoid the index finger moving to the operating button 40 to cause false triggering.

In some embodiments, as shown in Fig. 4, the height L4 of the operation button 40 in the first direction is 5 mm to 10 mm. In this embodiment, in the height direction of the surgical instrument 100, the height L4 of the operation button 40 is set within the range of 5 mm to 10 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc., so that the operator can press the operation button 40 to control the forceps assembly 20 to perform corresponding treatment on the biological tissue.

In some embodiments, the ratio of the height of the index finger support structure 50 in the first direction to the height of the operation button 40 in the first direction is 3:1 to 5:1. In this embodiment, due to the limited space on the handle 11, the height ratio of the index finger support structure 50 to the operation button 40 is set within the range of 3:1 to 5:1, so that the operator has enough space to place the index finger, and the space of the operation button 40 is not too compressed.

In some embodiments, as shown in Fig. 3, the height L5 of the handle 11 in the first direction is 130 mm to 140 mm. In this embodiment, in the height direction of the surgical instrument 100, the height L5 of the handle 11 is set in the range of 130 mm to 140 mm, such as 130 mm, 131 mm, 132 mm, 133 mm, 134 mm, 135 mm, 136 mm, 137 mm, 138 mm, 139 mm, 140 mm, etc., which is small in size and convenient for the operator to hold.

In some embodiments, the ratio of the height of the index finger support structure 50 in the first direction to the height of the handle 11 in the first direction is 1:9 to 1:5. In this embodiment, the heights of the index finger support structure 50 corresponding to handles 11 of different heights may be different. The height ratio of the index finger support structure 50 to the handle 11 is set within the range of 1:9 to 1:5, which can facilitate the operator to hold the handle 11 while comfortably resting on the index finger support structure 50, avoiding accidental touching of the operation button 40 during operation.

In some embodiments, as shown in FIG4 , the distance L6 between the index finger supporting structure 50 and the trigger 12 is 6 mm to 15 mm. In this embodiment, the trigger 12 is located below the index finger supporting structure 50. In the height direction of the surgical instrument 100, the distance L6 between the index finger supporting structure 50 and the trigger 12, that is, the distance between the lowest point of the index finger supporting structure 50 and the highest point of the trigger 12 is set to 6 mm to 15 mm, so that the operator's index finger can be placed on the index finger supporting structure 50, and the middle finger, ring finger and pinky finger can operate the trigger 12, while leaving enough space to install the operation button 40.

In some embodiments, as shown in FIGS. 2 to 9 , the end of the trigger 12 close to the operation button 40 has a avoidance surface 121, and the avoidance surface 121 is inclined in a direction away from the operation button 40 to prevent the movement path of the trigger 12 from interfering with the movement path of the button. In this embodiment, since the index finger support structure 50 needs to be provided above the operation button 40, in order to avoid the space of the operation button 40 from being compressed, the avoidance surface 121 inclined downward is provided at the upper end of the trigger 12, thereby avoiding the operation button 40, so as to prevent the movement path of the trigger 12 from interfering with the movement path of the button, and facilitate the operator to press the function button.

As an embodiment, as shown in Figures 2 to 9, the avoidance surface 121 is a curved surface, that is, the avoidance surface 121 is an arc-shaped structure extending obliquely downward, which can not only avoid the operation button 40, but also make the upper surface of the trigger 12 relatively smooth and without edges and corners. The entire surface of the trigger 12 can be set to a smooth curved surface, which is convenient for the operator to reach into the trigger 12 for operation, thereby improving the operating comfort.

As another embodiment, the avoidance surface 121 is an inclined surface, that is, the upper end of the trigger 12 is a flat, downwardly inclined inclined surface structure, which can also realize the avoidance operation button 40.

In some embodiments, the inner concave portion 51 is configured to transition to the extension portion 52 in an arc shape. In this embodiment, the arc shape extending from the inner concave portion 51 to the extension portion 52 can fit the curve of the finger, so that the index finger of the operator can be supported on the index finger support structure 50 more comfortably and ergonomically.

In some embodiments, as shown in FIG8 , the extension portion 52 is provided with a first protruding structure 521, which is disposed at an edge position adjacent to the operation key 40 for the operator's index finger to touch, thereby prompting the operator's index finger to have moved to the edge position of the extension portion 52 adjacent to the operation key 40. In this embodiment, when the operator's index finger moves to the edge position of the extension portion 52, it will touch the first protruding structure 521, thereby prompting the operator's index finger to have touched the edge position of the extension portion 52 adjacent to the operation key 40, tactilely prompting the operator to have the risk of accidentally touching the operation key 40, which can better prevent the operator from accidentally touching the operation key 40. In addition, the provision of the first protruding structure 521 can also increase friction and play an anti-slip role, thereby preventing the index finger from slipping to the operation key 40.

Optionally, the first protrusion structure 521 may be one or more protrusions of regular or irregular shapes, such as round protrusions, square protrusions, etc., and the multiple protrusions may be arranged neatly in one or more rows, or may be arranged at irregular intervals. Of course, the first protrusion structure 521 may also be one or more convex ridges of regular or irregular shapes such as horizontal extension, vertical extension, or S-shaped extension, or the first protrusion structure 521 may also be a combination of protrusions and convex ridges, which can make the operator feel a touch different from a smooth surface, so as to prompt the operator's index finger to have touched the edge of the extension portion 52 adjacent to the operation button 40.

Exemplarily, as shown in FIG. 8 , the first protrusion structure 521 includes a plurality of protrusions arranged at intervals along the edge of the extension portion 52 , so as to play a blocking and prompting role at the edge of the extension portion 52 to prevent the operator from accidentally touching the operation button 40 .

It is understandable that, as shown in FIGS. 2 to 6 , the first protruding structure 521 may not be provided on the extending portion 52 .

In some embodiments, as shown in FIGS. 5-9 , a second protruding structure 41 is provided on the operation button 40, and the second protruding structure 41 is used for the operator's index finger to touch, so as to prompt that the operator's index finger has moved to the operation button 40. In this embodiment, when the operation button 40 needs to be activated, the operator's index finger can move down to the operation button 40, and at this time, the second protruding structure 41 will be touched to prompt that the operator's index finger has touched the operation button 40, so that the operator can accurately press the operation button 40 to play a positioning role. In addition, the provision of the second protruding structure 41 can not only facilitate the operator's pressing, but also increase friction to play an anti-slip role, so that the index finger can better apply force on the operation button 40.

Optionally, the second protrusion structure 41 may be one or more protrusions of regular or irregular shapes, such as round protrusions, square protrusions, etc., and the multiple protrusions may be arranged neatly in one or more rows, or may be arranged at irregular intervals. Of course, the second protrusion structure 41 may also be one or more convex ridges of regular or irregular shapes such as horizontal extension, vertical extension, or S-shaped extension, or the second protrusion structure 41 may also be a combination of protrusions and convex ridges, which can make the operator feel a touch different from a smooth surface, so as to prompt the operator that the index finger has touched the edge of the extension portion 52 adjacent to the operation button 40.

For example, as shown in FIG9 , the second protrusion structure 41 includes a plurality of protrusions and a plurality of convex ridges, which are arranged alternately in sequence and can be arranged in the middle of the surface of the operation button 40. In order to make the operation button 40 and the outer surface of the handle 11 transition and coordinate, the outer surface of the operation button 40 can be set as a curved surface, and the plurality of protrusions and the plurality of convex ridges are arranged in a curve. When the operator touches the second protrusion structure 41, it can give the operator a tactile feeling different from the smooth surface, thereby playing a positioning and prompting role.

Optionally, in the length direction of the surgical instrument 100, the protruding length of the second protrusion structure 41 does not exceed the protruding length of the extension portion 52, thereby preventing accidental touching of the operation button 40 and playing an auxiliary role when the operation button 40 needs to be activated, so that the index finger can better exert force on the operation button 40.

It is understandable that, as shown in FIG. 2 and FIG. 3 , the second protrusion structure 41 may not be provided on the operation button 40 .

In some embodiments, as shown in FIGS. 1 to 3 , the handle assembly 10 further includes a rotating wheel 13, and the pliers assembly 30 is connected to the handle 11 via the rotating wheel 13. The side of the handle 11 facing away from the rotating wheel 13 is recessed to form a gripping structure 60, and the gripping structure 60 is used to fit with the operator's base. When in use, as shown in FIG. 7 , when the operator holds the handle 11, the base can fit with the gripping structure 60, the thumb abuts against one side in the width direction of the handle 11, and the index finger goes around from the other side in the width direction of the handle 11 to the index finger supporting structure 50 located at the front side of the handle 11. The surface of the handle 11 from the gripping structure 60 to the index finger supporting structure 50 is a smooth arc surface that is recessed inward, fitting the base and finger curve of the operator, so that the operator can have a force point from the palm to the fingers, which is ergonomic and improves the comfort of operation.

The above is only a specific implementation of the present application, but the protection scope of the present application 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 in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims (11)

1. A surgical instrument, comprising:

A handle assembly comprising a handle for gripping and a trigger movable relative to the handle;

the clamp head assembly is in motion fit with the trigger so that the clamp head assembly can be driven to open or close when the trigger moves relative to the handle;

the clamp pipe assembly is used for connecting the clamp head assembly and the handle;

The operation key is arranged on the handle and is used for being pressed by an index finger of an operator so as to control the clamp head assembly to treat biological tissues;

The handle is provided with an index finger bearing structure at a position close to the operation key, the index finger bearing structure is provided with an inner concave part and an extension part, the inner concave part is arranged from the surface of the handle to the direction of the inner side of the handle in a concave manner, the extension part is arranged towards the direction of the outer side of the handle in a convex manner, and the extension part is positioned between the inner concave part and the operation key.

2. The surgical instrument of claim 1, wherein an end of the extension toward the outside of the handle is a first distance from an end of the recess toward the inside of the handle, and wherein the first distance is less than or equal to 10mm.

3. The surgical instrument of claim 1, wherein an edge of the extension is flush with an outer surface of the operating button proximate the extension; or alternatively

The edge of the extension part and the outer surface of the operation key close to the extension part are separated by a second distance, and the second distance is smaller than or equal to 1mm.

4. The surgical instrument of claim 1, wherein the index finger support structure, the operating button, and the trigger are disposed in sequence along a first direction that is perpendicular to the extension of the jawarm assembly.

5. The surgical instrument of claim 4, wherein the index finger support structure has a height in the first direction of 15mm to 25mm; and/or the number of the groups of groups,

The height of the operation key in the first direction is 5mm to 10mm; and/or the number of the groups of groups,

The ratio of the height of the index finger bearing structure in the first direction to the height of the operation key in the first direction is 3:1 to 5:1, a step of; and/or the number of the groups of groups,

The height of the handle in the first direction is 130mm to 140mm; and/or the number of the groups of groups,

The ratio of the height of the index finger bearing structure in the first direction to the height of the handle in the first direction is 1:9 to 1:5, a step of; and/or the number of the groups of groups,

The distance between the index finger bearing structure and the trigger is 6mm to 15mm.

6. The surgical instrument of claim 1, wherein an end of the trigger adjacent the operating button has a relief surface that is inclined away from the operating button to prevent interference between the path of movement of the trigger and the path of movement of the button.

7. The surgical instrument of claim 6, wherein the relief surface is a beveled or curved surface.

8. The surgical instrument of any one of claims 1-7, wherein the fillet is configured to arcuately transition to the extension.

9. The surgical instrument of any one of claims 1-7, wherein a first raised structure is provided on the extension, the first raised structure being disposed adjacent an edge of the operating button for being touched by an operator's index finger to indicate that the operator's index finger has moved to an edge of the extension adjacent the operating button.

10. The surgical instrument of any one of claims 1-7, wherein the operating button is provided with a second raised structure for an operator's index finger to touch to indicate that the operator's index finger has moved to the operating button.

11. The surgical instrument of any one of claims 1-7, wherein the handle assembly further comprises a runner through which the forceps tube assembly is coupled to the handle;

One side of the handle, which is opposite to the rotating wheel, is sunken to form a holding structure, and the holding structure is used for being attached to a tiger mouth of an operator.