Anastomat handle and anastomat

Abstract

The invention relates to an anastomat handle and an anastomat. The anastomat handle comprises a shell, a rack, a handle rotationally connected to the shell and a retreating driving piece rotationally connected to the shell. A driving claw is rotationally connected to the handle, and when the handle is rotated by a preset angle from the first position, the driving claw can be connected with the rack in a clamped mode. When the handle continues to be rotated, the driving claw can push the rack to move in the far end direction, and the tail end executing mechanism is closed through transmission fit between the rack and the tail end executing mechanism. When the tail end executing mechanism needs to be in an opening state, the rack is pushed to move in the near-end direction through rotation of the retreating driving piece, so that power is transmitted to the tail end executing mechanism to enable the tail end executing mechanism to be opened. The driving claw and the retreating driving piece are independently connected to the handle and the shell respectively, movement between the driving claw and the retreating driving piece is relatively independent, advancing and retreating control over the rack is more convenient, opening and closing operation of the tail end executing mechanism is more convenient, the structure and control of the anastomat handle are simpler, and the assembling difficulty is lowered.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a stapler handle and a stapler. Background Art

[0002] Digestive tract diseases are one of the most common diseases in humans. Currently, laparoscopic cutting and staplers are often used in surgery to anastomose physiological tissues such as the esophagus, stomach and intestines.

[0003] When a laparoscopic stapler is used in surgery, the jaws need to be closed to pass the trocar into the abdominal cavity, and after entering the abdominal cavity, the jaws need to be opened again to clamp the tissue for stapler cutting. In order to facilitate the opening and closing of the jaws, an operating unit is generally provided on the firing handle, and the operating unit cooperates with the firing handle to switch the jaws between the open state and the closed state.

[0004] However, the structure of the existing operating unit is relatively complex, resulting in greater difficulty in assembly. Summary of the invention

[0005] Based on this, it is necessary to provide a stapler handle to address the problem of complex structure of the operating unit provided on the existing firing handle.

[0006] A stapler handle, comprising:

[0007] case;

[0008] A rack, slidably connected to the housing and having a first through hole;

[0009] A handle, rotatably connected to the housing; the handle has a first position and a second position;

[0010] a driving pawl rotatably connected to the handle; when the handle rotates from the first position to the second position, the driving pawl can abut against the rack, and the driving pawl responds to the handle to push the rack to move toward the distal end of the rack;

[0011] A backward drive member is rotatably connected to the shell; the backward drive member has a first state and a second state; when the backward drive member is in the first state, the backward drive member is engaged with the first through hole and can push the rack to move a preset distance toward the proximal direction of the rack; when the backward drive member is in the second state, the backward drive member is disengaged from the first through hole.

[0012] In one embodiment, the stapler handle further comprises a first reset member connected between the retraction drive member and the housing; the first reset member is used to drive the retraction drive member to reset from the second state to the first state; and / or

[0013] A second restoring member is connected to the rotating shaft of the handle; the second restoring member is connected between the handle and the shell; and the second restoring member is used to drive the handle to return to the first position.

[0014] In one of the embodiments, a third reset member is connected to the rotating shaft of the driving claw; the third reset member is connected between the driving claw and the handle; and the third reset member is used to drive the driving claw to engage with the rack.

[0015] In one embodiment, the shell is provided with a stop member; when the handle is located at the first position, the driving claw abuts against the stop member, so that the driving claw is disengaged from the rack; when the handle is rotated from the first position to the second position, the driving claw is disengaged from the stop member, and the driving claw abuts against the rack under the action of the third reset member.

[0016] In one embodiment, the stapler handle further comprises a back button, which is transmission-connected to the back drive member and is used to drive the back drive member to rotate so as to push the rack to move a preset distance toward the proximal end of the rack;

[0017] The housing is configured with a button matching hole, which is arc-shaped; when the retreat driving member rotates, the retreat button slides in the button matching hole.

[0018] In one embodiment, the rack is configured with an avoidance groove, and when the retraction driving member is in the second state, the retraction driving member is located in the avoidance groove.

[0019] In one embodiment, the rack is configured with a first positioning portion; the stapler handle further comprises a thrust member slidably connected to the housing, the thrust member having a stop position and an unlocking position;

[0020] When the thrust member is in the stopping position, the thrust member abuts against the rack, and when the thrust member abuts against the first positioning portion, the rack can be blocked from moving toward the distal end of the rack;

[0021] When the thrust member is in the unlocking position, the thrust member is disengaged from the rack, thereby releasing the movement restriction on the rack.

[0022] In one of the embodiments, the stapler handle further comprises a switch button slidably connected to the shell, and the switch button is transmission-connected to the thrust member for driving the thrust member to move from the stop position to the unlocking position.

[0023] In one of the embodiments, the stapler handle further comprises a fourth reset member connected to the thrust member, for driving the thrust member to be in the stop position.

[0024] A stapler comprises the stapler handle as described above and an end actuator connected to the stapler handle.

[0025] The stapler handle comprises a housing, a rack slidably connected to the housing, a handle rotatably connected to the housing, and a retraction drive member rotatably connected to the housing. A driving claw is rotatably connected to the handle, and when the handle is rotated from the first position to a preset angle, the driving claw can engage with the rack. Therefore, when the handle continues to be rotated, the driving claw will push the rack to move in the distal direction of the rack, and the end actuator on the stapler is closed through the transmission cooperation between the rack and the end actuator. When the anastomosis is completed or the anastomosis position needs to be changed, that is, when the end actuator needs to be in an open state, the retraction drive member is rotated so that the retraction drive member pushes the rack to move in the proximal direction to transmit power to the end actuator, so that the end actuator is opened. Among them, the distal end and the proximal end are relative to the operator, and the end closer to the operator, that is, the end away from the surgical position is the proximal end, and moving in the proximal direction is moving in the direction close to the operator. The end farther from the operator, that is, the end closer to the surgical site, is the distal end, and moving in the distal direction means moving in the direction away from the operator. Since the driving claw and the retracting driving member are separately connected to the handle and the housing, and there is no matching relationship between the two, the movement between the driving claw and the retracting driving member is relatively independent, the forward and backward control of the rack is more convenient, and the opening and closing operation of the end actuator is more convenient, making the structure and control of the stapler handle simpler and reducing the difficulty of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a stapler provided in one embodiment of the present application.

[0027] Figure 2 An exploded schematic diagram of a stapler handle provided in one embodiment of the present application.

[0028] Figure 3 for Figure 2 A partial schematic diagram of the stapler handle is shown.

[0029] Figure 4 for Figure 3 A schematic diagram showing a handle in a stapler handle in a first position is shown.

[0030] Figure 5 for Figure 4 A schematic diagram showing the handle of the stapler handle being in a third position.

[0031] Figure 6 for Figure 5 A partial enlarged view of point A in the stapler handle is shown.

[0032] Figure 7 for Figure 5 A schematic diagram showing the handle of the stapler handle being in a second position.

[0033] Figure 8 for Figure 2 A schematic diagram of the stapler handle shown in the firing state.

[0034] Fig. 9 for Figure 8 A schematic diagram of the retraction drive member in the stapler handle is shown.

[0035] Fig.10 for Figure 8 Schematic diagram of the rack in the stapler handle shown.

[0036] Figure numbers: 10, stapler; 100, stapler handle; 110, shell; 111, abutment member; 112, upper shell; 113, lower shell; 114, button matching hole; 120, rack; 121, first through hole; 122, first positioning portion; 123, avoidance groove; 130, handle; 131, gripping hole; 132, rotating shaft of handle; 140, driving claw; 141, forward toggle portion; 142, third reset member; 150, backward driving member; 151, backward toggle portion; 152, first reset member; 153, backward button; 161, thrust member; 162, switching button; 163, reset handle; 164, fourth reset member; 200, end actuator. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] See also Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, a stapler handle 100 provided in one embodiment of the present application includes a housing 110, a rack 120 slidably connected to the housing 110, a handle 130 rotatably connected to the housing 110, a driving claw 140 rotatably connected to the handle 130, and a retreat driving member 150 rotatably connected to the housing 110. The handle 130 has a first position and a second position. When the handle 130 rotates from the first position to the second position, the driving claw 140 can abut against the rack 120, and the driving claw 140 responds to the handle 130 to push the rack 120 to move toward the distal end of the rack 120. The rack 120 is configured with a first through hole 121; the backward driving member 150 has a first state and a second state; when the backward driving member 150 is in the first state, the backward driving member 150 is engaged with the first through hole 121, and can push the rack 120 to move a preset distance in the proximal direction of the rack 120; when the backward driving member 150 is in the second state, the backward driving member 150 is disengaged from the first through hole 121.

[0044] The stapler handle 100 is as follows: Figure 4 FIG. 1 is a schematic diagram showing that the handle 130 is in the first position, and the operator does not apply force to the handle 130; Figure 7 FIG. 1 is a schematic diagram showing that the handle 130 is in the second position. The operator applies force to the handle 130 to rotate the handle 130 relative to the housing 110. Figure 5The diagram shows the handle 130 rotating to the third position, which is between the first position and the second position. When the handle 130 is rotated counterclockwise from the first position to a first preset angle, such as 10°, the handle 130 is in the third position, and the driving claw 140 can be engaged with the rack 120. Therefore, when the handle 130 continues to be rotated counterclockwise, the driving claw 140 will push the rack 120 to move in the distal direction of the rack 120 until the handle 130 rotates counterclockwise to the limit position, i.e., the second position. During the counterclockwise rotation of the handle 130, the end actuator 200 is closed by the transmission cooperation between the rack 120 and the end actuator 200 on the stapler 10. When the anastomosis is completed or the anastomosis position needs to be changed, that is, when the end actuator 200 needs to be in an open state, the back drive 150 is rotated so that the back drive 150 pushes the rack 120 to move in the proximal direction to transmit power to the end actuator 200, so that the end actuator 200 is opened. The specific matching relationship between the rack and the end actuator can be referred to the stapler in the prior art, which will not be repeated here.

[0045] The distal end and the proximal end are relative to the operator. The end closer to the operator, that is, the end farther from the surgical site, is the proximal end. The rack moves in the proximal direction, that is, it moves in the direction closer to the operator. The end farther from the operator, that is, the end closer to the surgical site, is the distal end. The rack moves in the distal direction, that is, it moves in the direction away from the operator. Figure 4 For example, the rack 120 moves in the proximal direction, that is, the rack 120 moves to the right, and the rack 120 moves in the distal direction, that is, the rack 120 moves to the left. Since the driving claw 140 and the retreat driving member 150 are separately connected to the handle 130 and the housing 110, respectively, and there is no matching relationship between the two, the movement between the driving claw 140 and the retreat driving member 150 is relatively independent, the forward and backward control of the rack 120 is more convenient, and the opening and closing operation of the end actuator 200 is more convenient, making the structure and control of the stapler handle 100 simpler, reducing the difficulty of assembly.

[0046] like Figures 4 to 7 As shown, in one embodiment, the stapler handle 100 further includes a first reset member 152 connected between the retraction drive member 150 and the housing 110; the first reset member 152 is used to drive the retraction drive member 150 to reset from the second state to the first state. Figure 6 As shown in FIG. 1 , when the backward toggle portion 151 of the backward driving member 150 is located in the first through hole 121 and at the center of the first through hole 121, the first restoring member 152 is in a natural state. When an external force acts on the backward toggle portion 151 to rotate it clockwise, the backward toggle portion 151 first rotates to abut against the hole wall of the first through hole 121, as shown in FIG. Figure 7As shown; as the back-moving toggle portion 151 continues to rotate clockwise, it pushes the rack 120 to move in the proximal direction.

[0047] When the external force acts on the backward toggle part 151 to rotate it clockwise, the first reset member 152 is compressed and deformed by the external force. On the one hand, the elastic deformation of the first reset member 152 allows the backward driving member 150 to have a certain degree of freedom of movement; on the other hand, when the external force acting on the backward driving member 150 is removed, the elastic potential energy generated by the first reset member 152 allows the backward driving member 150 to be reset to the first state, that is, to be in the first through hole 121, so that when it is used later, the rack 120 can be directly controlled to move in the proximal direction through the backward driving member 150, and the control is simpler and more reliable. Specifically, the driving claw 140 and the backward driving member 150 can both be ratchets, and the first reset member 152 can be a spring.

[0048] like Figures 4 to 6 As shown, in one embodiment, a second reset member is connected to the rotating shaft 132 of the handle 130; the second reset member is connected between the handle 130 and the housing 110; the second reset member is used to drive the handle 130 to reset to the first position. Figure 4 As shown, the handle 130 is provided with a gripping hole 131 for an operator to grip the handle 130. Figure 4 When the operator holds the handle 130 and rotates it counterclockwise, the second reset member is elastically deformed until the handle 130 moves to the position shown in FIG. Figure 7 In the second position shown, the elastic deformation is the largest. Therefore, when the operator removes the external force applied to the handle 130, the handle 130 can automatically return to the first position under the action of the second return member, so that the driving claw 140 can contact the rack 120 again, and push the rack 120 to move in the distal direction under the action of the handle 130. The second return member can be a torsion spring, which is sleeved on the rotating shaft 132 of the handle 130.

[0049] like Figure 2 , Figures 4 to 6 As shown, in one embodiment, a third reset member 142 is connected to the rotating shaft of the driving claw 140; the third reset member 142 is connected between the driving claw 140 and the handle 130, and the third reset member 142 is used to drive the driving claw 140 to engage with the rack 120. That is, when the driving claw 140 is engaged with the rack 120, the third reset member 142 is in a natural state. Through this arrangement, when the external force acting on the driving claw 140 is less than its elastic force, the driving claw 140 can remain in the engaged state with the rack 120, thereby improving the reliability of the driving claw 140 driving the rack 120 to move in the distal direction.

[0050] Furthermore, the stiffness coefficient of the second reset member is greater than the stiffness coefficient of the third reset member 142. Thus, when the second reset member is in a natural state, i.e., when the handle 130 is in the first position, the elastic potential energy of the third reset member 142 is insufficient to reset the driving claw 140 to engage with the rack 120. As the handle 130 rotates counterclockwise, the second reset member undergoes a certain elastic deformation, and at the same time, the elastic potential energy of the third reset member 142 increases, thereby resetting the forward toggle portion 141 of the driving claw 140 and engaging with the tooth groove of the rack 120. Figure 5 and Figure 7 As shown, after the driving claw 140 is engaged with the tooth groove of the rack 120, if the handle 130 is rotated counterclockwise, the power end provided with the gripping hole 131 is swung to the right; the resistance end provided with the forward toggle portion 141 is swung to the left, thereby pushing the rack 120 to move in the distal direction. The naming of the power end and the resistance end refers to the naming of the lever. The power end is the end that directly receives the external force source, and the other end is the resistance end. The power end and the resistance end in the following text are named according to this rule. The third reset member 142 can be a torsion spring.

[0051] like Figures 3 to 6 As shown, in one embodiment, the shell 110 is provided with a stop member; when the handle 130 is in the first position, the driving claw 140 abuts against the stop member, so that the driving claw 140 is disengaged from the rack 120; when the handle 130 is rotated from the first position to the second position, the driving claw 140 is disengaged from the stop member, and the driving claw 140 abuts against the rack 120 under the action of the third reset member 142.

[0052] Specifically, when the external force applied to the handle 130 is removed, the handle 130 is reset clockwise to the position as shown in FIG. Figure 5 When in the third position shown, since the power end of the driving claw 140 abuts against the blocking member, the blocking member will give the power end of the driving claw 140 a reaction force, which is perpendicular to the blocking member and points to the distal direction of the rack 120; at the same time, since the handle 130 is reset clockwise from the third position to the first position, the deflection force it is subjected to is downward, that is, the friction force is upward, and the combined force of the friction force and the reaction force at the power end of the driving claw 140 is upward and is greater than the reset force of the third reset member 142, so that the resistance end of the driving claw 140 provided with the forward toggle portion 141 is subjected to a downward force, so that it can be disengaged from the rack 120 and is in a Figure 4 When the driving claw 140 is released from the abutment with the blocking member, the reaction force disappears, so the driving claw 140 can be reset to be engaged with the rack 120 under the action of the third reset member 142 .

[0053] like Figures 4 to 7As shown, in one embodiment, the stapler handle 100 further includes a back button 153, which is in transmission connection with the back drive member 150 and is used to drive the back drive member 150 to rotate so as to push the rack 120 to move a preset distance toward the proximal end of the rack 120. Specifically, the back button 153 is connected to the power end of the back drive member 150, and correspondingly, one end of the back drive member 150 where the back toggle portion 151 is provided is the resistance end. Accordingly, the housing 110 includes an upper housing 112 and a lower housing 113, and both the upper housing 112 and the lower housing 113 are configured with a button mating hole 114 for the back button 153 to pass through.

[0054] like Figures 4 to 7 As shown, further, the button matching hole 114 is arc-shaped, which is used to adapt to the movement trajectory of the backward driving member 150. When the backward toggle portion 151 of the backward driving member 150 is located in the first through hole 121, the backward button 153 is operated to rotate clockwise downward along the arc hole, so that the backward driving member 150 drives the rack 120 to move in the proximal direction. When the backward toggle portion 151 of the backward driving member 150 is located in the first through hole 121, and the driving claw 140 drives the rack 120 to move in the distal direction, the rack 120 will push the backward toggle portion 151 of the backward driving member 150, so that the backward toggle portion 151 of the backward driving member 150 moves downward, and correspondingly, the power end of the backward driving member 150 moves up, that is, the backward button 153 slides counterclockwise upward in the button matching hole 114. By setting the button matching hole 114 on the shell 110, on the one hand, it is convenient for the operator to operate the backward driving member 150 through the backward button 153; on the other hand, it can play a certain avoidance role, so that the backward button 153 and the backward driving member 150 have a certain activity space to realize the corresponding function; at the same time, by designing the button matching hole 114 into an arc shape and adapting it to the movement trajectory of the backward driving member 150, the button matching hole 114 can also play a certain guiding and limiting role to realize more precise control.

[0055] like Figures 8 to 10As shown, in one embodiment, the rack 120 is configured with an escape groove 123. When the backward driving member 150 is in the second state, the backward toggle portion 151 is disengaged from the first through hole 121, and the backward toggle portion 151 is located in the escape groove 123. The backward toggle portion 151 abuts against the bottom of the escape groove 123, so that the backward toggle portion 151 is in a biased state. Specifically, the escape groove 123 is a long groove, which is distributed in the proximal direction. When the backward driving member 150 is in the second state, it means that the rack 120 is moving in the distal direction, that is, the stapler handle 100 is in the firing state. By providing the avoidance groove 123 on the rack 120, it is used to avoid the limiting effect of the back-moving part 151 on the rack 120, so that when the driving claw 140 drives the rack 120 to move in the distal direction, the back-moving part 151 is biased in the avoidance groove 123 and can slide relative to the rack 120, thereby reducing the resistance caused by the back-moving part 151 to the movement of the rack 120 in the distal direction. The avoidance groove 123 is adjacent to the first through hole 121, that is, the back-moving driving member 150 will enter the avoidance groove 123 when sliding out of the first through hole 121, thereby improving the smoothness of the movement of the rack 120 in the distal direction.

[0056] like Figure 2 As shown, in one embodiment, the stapler handle 100 further includes a reset handle 163, which is connected to the rack 120. When the stapler handle is finished stapling, the rack 120 is pulled in the proximal direction by the reset handle 163, so that the rack 120 is reset to the position as shown in FIG. Figure 5 The initial position shown in the figure, at this time, the retreat toggle portion 151 is reset under the action of the first reset member 152 and enters the first through hole 121 again.

[0057] like Figure 7 , Figure 8 and Fig.10 As shown, in one embodiment, the rack 120 is configured with a first positioning portion 122; the stapler handle 100 further includes a thrust member 161 slidably connected to the housing 110, and the thrust member 161 has a stop position and an unlocking position. Figure 7 As shown in FIG. 1 , when the thrust member 161 is in the stop position, the thrust member 161 abuts against the first positioning portion 122 of the rack 120. The thrust member 161 blocks the rack 120 from moving in the distal direction. The thrust member 161 is moved downward to the unlocked position, that is, the thrust member 161 is disengaged from the first positioning portion 122. Figure 8As shown, the thrust piece 161 no longer blocks the rack 120, thereby releasing the movement restriction of the rack 120, so that the rack 120 can move in the distal direction. During the process of debugging the anastomosis position, the thrust piece 161 is in the stop position, restricting the rack 120 from moving in the distal direction to prevent misfiring; when the debugging is completed and the stapler 10 needs to perform an anastomosis operation, the thrust piece 161 is in the unlocking position, and the rack 120 can move in the distal direction. Through this arrangement, the possibility of misfiring of the stapler handle 100 is reduced, and the reliability of the stapler handle 100 is improved.

[0058] like Figure 7 , Figure 8 and Fig.10 As shown, more specifically, the first positioning portion 122 is a positioning groove, and a guide slope is provided on the side wall of the positioning groove close to the distal direction. In this way, when the rack 120 moves along the proximal direction, under the action of the guide slope, the thrust piece 161 slides with the guide slope and gradually slides out of the positioning groove, that is, the thrust piece 161 does not limit the movement of the rack 120 along the proximal direction.

[0059] like Figure 5 and Figure 7 As shown, in one embodiment, the stapler handle 100 also includes a switch button 162 that is slidably connected to the shell 110, and the switch button 162 is transmission-connected to the thrust member 161, and is used to drive the thrust member 161 to move from the stop position to the unlocking position. In this way, by operating the switch button 162, the thrust member 161 can be switched between the stop position and the unlocking position, thereby conveniently releasing the restriction on the movement of the rack 120 in the distal direction. Specifically, the switch button 162 can be fixedly connected to the thrust member 161, that is, the two are connected as one body, so that by operating the switch button 162 to move up and down, the position of the thrust member 161 can be changed. In other embodiments, there are a first bevel and a second bevel between the thrust member and the switch button, respectively, and the first bevel and the second bevel are slidably matched. When the switch button moves in the distal direction, under the action of the first bevel and the second bevel, the thrust member will move in a direction perpendicular to the distal direction, and in Figure 7 In the perspective shown, the thrust piece moves up and down, thereby switching between the stop position and the unlocking position.

[0060] like Figure 5 and Figure 7As shown, in one embodiment, the stapler handle 100 further includes a fourth reset member 164 connected to the thrust member 161, and the fourth reset member 164 is used to drive the thrust member 161 to a stop position. Specifically, the fourth reset member 164 is connected between the thrust member 161 and the housing 110. When the thrust member 161 is in the stop position, the fourth reset member 164 is in a natural state. When the stop member is in the unlocked position, the fourth reset member 164 is in a compressed state, so that after the external force is removed, the fourth reset member 164 can make the thrust member 161 in the stop position, thereby improving the reliability of the stapler handle 100 in preventing misfiring. At the same time, the fourth reset member 164 is elastically deformed to avoid the movement of the rack 120 in the distal direction, thereby improving the smoothness of the movement of the rack 120 in the distal direction.

[0061] As shown in Figure 1, an embodiment of the present application further provides a stapler 10, comprising the above-mentioned stapler handle 100 and an end effector 200 connected to the stapler handle 100. Since the stapler 10 has the stapler handle 100 of any of the above-mentioned embodiments, the opening and closing operation of the end effector 200 is more convenient, making the structure and control of the stapler 10 simpler and reducing the difficulty of assembly.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A stapler handle, characterized in that: The stapler handle comprises: Housing (110); A rack (120) slidably connected to the housing (110) and having a first through hole (121); A handle (130) is rotatably connected to the housing (110); the handle (130) has a first position and a second position; a driving claw (140) rotatably connected to the handle (130); when the handle (130) rotates from the first position to the second position, the driving claw (140) can abut against the rack (120), and the driving claw (140) responds to the handle (130) to push the rack (120) to move toward the distal end of the rack (120); A backward drive member (150) is rotatably connected to the shell (110); the backward drive member (150) has a first state and a second state; when the backward drive member (150) is in the first state, the backward drive member (150) is engaged with the first through hole (121), and can push the rack (120) to move a preset distance toward the proximal direction of the rack (120); when the backward drive member (150) is in the second state, the backward drive member (150) is disengaged from the first through hole (121).

2. The stapler handle according to claim 1, characterized in that: The stapler handle further comprises a first reset member (152) connected between the retraction drive member (150) and the housing (110); the first reset member (152) is used to drive the retraction drive member (150) to reset from the second state to the first state; and / or A second reset member is connected to the rotating shaft (132) of the handle (130); the second reset member is connected between the handle (130) and the housing (110); and the second reset member is used to drive the handle (130) to reset to the first position.

3. The stapler handle according to claim 1, characterized in that: A third reset member (142) is connected to the rotating shaft of the driving claw (140); the third reset member (142) is connected between the driving claw (140) and the handle (130); and the third reset member (142) is used to drive the driving claw (140) to engage with the rack (120).

4. The stapler handle according to claim 3, characterized in that: The housing (110) is provided with a stopper (111); when the handle (130) is located at the first position, the driving claw (140) abuts against the stopper (111), so that the driving claw (140) is disengaged from the rack (120); when the handle (130) rotates from the first position to the second position, the driving claw (140) is disengaged from the stopper (111), and the driving claw (140) abuts against the rack (120) under the action of the third reset member (142).

5. The stapler handle according to claim 1, characterized in that: The stapler handle further comprises a back button (153), wherein the back button (153) is in transmission connection with the back driving member (150) and is used to drive the back driving member (150) to rotate so as to push the rack (120) to move a preset distance in the proximal direction of the rack (120); The housing (110) is configured with a button matching hole (114), and the button matching hole (114) is arc-shaped; when the backward driving member (150) rotates, the backward button (153) slides in the button matching hole (114).

6. The stapler handle according to claim 1, characterized in that: The rack (120) is configured with an avoidance groove (123), and when the backward drive member (150) is in the second state, the backward drive member (150) is located in the avoidance groove (123).

7. The stapler handle according to claim 1, characterized in that: The rack (120) is configured with a first positioning portion (122); the stapler handle further comprises a thrust member (161) slidably connected to the housing (110), and the thrust member (161) has a stop position and an unlocking position; When the thrust member (161) is in the stop position, the thrust member (161) abuts against the rack, and when the thrust member abuts against the first positioning portion (122), it can prevent the rack (120) from moving toward the distal end direction of the rack (120); When the thrust member (161) is in the unlocking position, the thrust member (161) is disengaged from the rack (120), thereby releasing the movement restriction on the rack (120).

8. The stapler handle according to claim 7, characterized in that: The stapler handle further comprises a switch button (162) slidably connected to the housing, wherein the switch button (162) is transmission-connected to the thrust member (161) for driving the thrust member (161) to move from the stop position to the unlocking position.

9. The stapler handle according to claim 8, characterized in that: The stapler handle further comprises a fourth reset member (164) connected to the thrust member (161) and used for driving the thrust member (161) to be in the stop position.

10. A stapler, characterized in that: It comprises the stapler handle (100) according to any one of claims 1 to 9 and an end effector mechanism (200) connected to the stapler handle (100).

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