WO2024017212A1

WO2024017212A1 - Platform assembly and stapler

Info

Publication number: WO2024017212A1
Application number: PCT/CN2023/107774
Authority: WO
Inventors: 丁水澄
Original assignee: 天臣国际医疗科技股份有限公司
Priority date: 2022-07-18
Filing date: 2023-07-17
Publication date: 2024-01-25

Abstract

A platform assembly (12) and a stapler (10) having said assembly. The platform assembly (12) comprises: a trigger (14); a switching member (15) which can move between a first position and a second position; and a firing mechanism, where when the switching member (15) is in the first position, the firing mechanism is manipulated with the trigger (14) but does not cause a tool assembly of the stapler to fire; and when the switching member (15) is in the second position, the firing mechanism is manipulated with the trigger (14) and causes the tool assembly (11) to fire. In the present implementation, since the state of the firing mechanism can be changed by means of changing the position of the switching member (15), the switching member (15) can be left in the first position when firing of the tool assembly (11) is not desired, so as to prevent accidental firing of the tool assembly (11). Consequently, the present implementation can improve the safety of the stapler (10).

Description

Platform components and staplers

Technical field

The present disclosure relates to the field of medical devices, and in particular, to a platform assembly suitable for a stapler and a stapler having the platform assembly.

Background technique

The stapler is a device used clinically to replace traditional manual suturing. Compared with traditional manual suturing, staplers can increase the speed of tissue suturing and reduce trauma to patients. Security has always been one of the more concerning topics in this field.

Contents of the invention

The present disclosure provides a platform assembly suitable for a stapler and a stapler having the platform assembly to improve the safety of the stapler.

In one aspect, the present disclosure provides a platform assembly suitable for use with a stapler. The platform assembly includes: a trigger; a switching piece capable of moving between a first position and a second position; and a firing mechanism. When the switching piece is located at the first position, the firing mechanism is operated along with the trigger without causing the tool assembly of the stapler to fire. ; When the switching member is in the second position, the firing mechanism causes the tool assembly to fire along with the trigger being operated.

In a possible implementation, the platform assembly further includes a closing mechanism, the closing mechanism includes a first moving part, wherein as the first moving part moves from the third position to the fourth position, the closing mechanism causes the tool assembly to switch from open to closed. ; When the first moving member is located at the third position, the first moving member prevents the switching member from moving from the first position to the second position.

In a possible implementation, when the switching member is in the second position, as the first moving member moves from the fourth position to the third position, the first moving member pushes the switching member to cause the switching member to move from the second position to the first position. Location.

In a possible implementation, when the first moving part is in the third position, at least part of the first moving part is located in the movement path of the switching part from the first position to the second position; when the first moving part When in the fourth position, the first moving part is out of the movement path.

In a possible implementation, the firing mechanism includes: an actuating member, including an engaging portion; and an engaging member that moves from the fifth position to the sixth position as the trigger is operated, wherein when the switching member is in the first position, The meshing part moves from the fifth position to the sixth position, and the meshing part and the meshing part remain separated; when the switching part is in the second position, as the meshing part moves from the fifth position to the sixth position, the meshing part engages with the meshing part to push The actuating member moves distally, causing the tool assembly to fire.

In a possible implementation, the firing mechanism further includes a first force-applying member, and the first force-applying member applies a first force to the engaging member, so that when the switching member is in the first position, the engaging member moves from the fifth position. to the sixth position, the switching member supports the meshing member so that the meshing member overcomes the first force and remains separated from the meshing part; when the switching member is in the second position, as the meshing member moves from the fifth position to the sixth position, the first The acting force causes the engaging piece to engage with the engaging portion.

In a possible implementation, the switching member has a supporting surface, wherein when the switching member is located at the first position, the supporting surface supports the meshing member as the engaging member moves from the fifth position to the sixth position; when the switching member is located at the second position When, as the meshing part moves from the fifth position to the sixth position, the meshing part breaks away from the supporting surface.

In a possible implementation, the supporting surface is a first step surface, the switching member also has a second step surface, and the first step surface protrudes beyond the second step surface, wherein when the switching member is in the first position, the engaging member When the switching member moves from the fifth position to the sixth position, the first step surface supports the meshing member; when the switching member is in the second position, as the meshing member moves from the fifth position to the sixth position, the second step surface supports the meshing member, or the second step surface supports the meshing member. The second step surface does not support the engagement member.

In a possible implementation, the engaging member is pivotably supported about the first axis, and the first force-applying member applies a first force that causes the engaging member to rotate about the first axis in a first direction.

In one possible implementation, the engaging member is rotatably supported about the first axis, and the engaging member moves from the fifth position to the sixth position by revolving about the second axis in a second direction opposite to the first direction. .

In a possible implementation, the engaging member is supported by the trigger to rotate about a first axis, and the trigger is supported to be pivotable about a second axis.

In a possible implementation, the trigger is provided with a guide rail for guiding the switching member to move between the first position and the second position, and the switching member is provided in the guide rail.

In a possible implementation, the switching member has a first damping part, and the platform assembly further includes a second force-applying member, and the second force-applying member exerts a second action on the switching member in a direction from the first position to the second position. force, the guide rail is provided with a second damping part, wherein when the switching part is in the first position, the first damping part and the second damping part cooperate to provide resistance to overcome the second force and keep the switching part in the first position.

In a possible implementation, the guide rail is also provided with a first limiting part, and the second damping part and the first limiting part are sequentially arranged in the movement direction of the switching member from the first position to the second position, wherein when switching When the member is in the second position, the first limiting part cooperates with the first damping part to prevent the switching member from leaving the second position under the second force.

In a possible implementation, the platform assembly further includes a pushing member, wherein when the trigger is not operated, the pushing member can move toward the switching member under operation to push the switching member, so that the switching member moves from the first position to the second position. ; The switching member is provided with an avoidance portion to avoid interference with the pushing member during its movement following the trigger.

In a possible implementation, the platform assembly further includes a stopper, the engaging part includes a resisting part and a seat part, the seat part is adapted to be supported by the switching part, wherein when the engaging part is in the fifth position, the stopper and the resisting part The supporting portions abut against each other so that the seat portion exceeds the first step surface or is substantially flush with the first step surface in a direction away from the switching member.

In a possible implementation, the switching member also has a transition surface extending between the first step surface and the second step surface, the transition surface gradually protrudes toward the first step surface, and the engaging member has a smooth surface facing the switching member. guide surface.

In a possible implementation, the switching member includes a pair of branch parts, the first force-applying member is a tension spring, one end of the tension spring is connected to the engaging member, and the other end of the tension spring passes through the space between the pair of branch parts and is connected on the trigger.

In a possible implementation, the switching member further includes a second limiting portion extending between a pair of branch portions, and the second limiting portion and the tension spring move along the direction of movement of the switching member from the first position to the second position. Arrange in sequence.

In a possible implementation, the first end of the first moving part is pivotably supported around the third axis, and the closing mechanism further includes: a second moving part, the first end of which is connected to the second end of the first moving part. Pivot-connected; a third moving part, the first end of which is pivotally connected to the second end of the second moving part, and the second end of which is pivotably supported about the fourth axis; and the linkage part, which is slidable in the axial direction and against the third moving part, wherein as the first moving part rotates around the third axis from the third position to the fourth position, the third moving part rotates around the fourth axis and pushes the linkage part to move proximally along the axial direction, thereby causing The tool assembly switches from open to closed.

In a possible implementation, when the first moving part is located at the third position, as the trigger is operated, the trigger drives the first moving part to move from the third position to the fourth position.

On the other hand, the present disclosure also provides a stapler, which includes the platform assembly provided by the present disclosure.

On the other hand, the present disclosure also provides a tissue suturing method, which method includes: providing the stapler provided in the above aspect of the disclosure; and using the stapler to perform tissue suturing.

In this implementation, since the state of the firing mechanism can be changed by changing the position of the switch, when firing of the tool assembly is not expected, the switch can be maintained in the first position to prevent accidental firing of the tool assembly. Therefore, this implementation can improve the safety of the stapler.

Brief description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the drawings required to be used in the embodiments will be briefly introduced below.

It should be understood that the following drawings illustrate only some, but not all, embodiments of the present disclosure and therefore should not be construed as limiting the scope.

It will also be understood that the same or corresponding reference numbers are used in the drawings to refer to the same or corresponding elements (components or parts).

It should also be understood that the drawings are schematic only and that the dimensions and proportions of elements (components or portions) in the drawings are not necessarily precise.

Figure 1 is a schematic structural diagram of a stapler according to an embodiment of the present disclosure.

2A to 2E are structural schematic diagrams showing the internal structure of the platform assembly of the stapler in FIG. 1 , where the platform assembly is in different states in FIGS. 2A to 2E .

FIG. 3 is an exploded schematic view of a portion of the platform assembly of the stapler in FIG. 1 .

FIG. 4 is a schematic structural diagram of the switching member of the stapler in FIG. 1 .

FIG. 5 is a schematic structural diagram of a part of the trigger of the stapler in FIG. 1 .

6A and 6B are schematic structural diagrams showing the mating relationship between the switching component and the engaging component of the stapler in FIG. 1 .

FIG. 7 is a schematic structural diagram showing the matching relationship between the engaging part and the stopper of the stapler in FIG. 1 .

8A and 8B are schematic structural views of the tool assembly of the stapler in FIG. 1 , where the tool assembly is in different states in FIGS. 8A and 8B .

9A and 9B are structural schematic diagrams illustrating the process of causing the first moving part of the stapler in FIG. 1 to leave the fourth position.

FIG. 10 is a schematic structural diagram showing the first moving part and the second moving part of the stapler in FIG. 1 .

Detailed ways

The embodiments of the present disclosure are exemplarily described below with reference to the accompanying drawings. It should be understood that the present disclosure may be implemented in various ways and should not be construed as being limited to the embodiments set forth here. The embodiments set forth here are only for a more thorough and complete understanding of the present disclosure.

An embodiment of the present disclosure provides a stapler 10. The stapler 10 may be an endoscopic stapler. In particular, the stapler 10 may be an endoscopic linear cutting stapler. It is understood that in other embodiments, the stapler according to the present disclosure may also be of other types.

Referring to FIG. 1 , stapler 10 includes tool assembly 11 and platform assembly 12 . In one example, platform assembly 12 may include elongated body 13 . For example, the elongated body 13 may be tubular. The elongated body 13 may extend distally from the body portion of the platform assembly 12 . Tool assembly 11 may be attached to the distal end of elongate body 13 .

It should be noted that in this disclosure, the term “distal” may refer to an end of the stapler that is far away from the doctor (or surgical robot). Correspondingly, the term "proximal" may refer to the end of the stapler that is close to the surgeon (or surgical robot).

Tool assembly 11 includes a pair of clamps 111,112. The tool assembly 11 can be switched between open and closed. When the tool assembly 11 is closed, a pair of clamps 111, 112 can clamp tissue therebetween. When the tool assembly 11 is opened, a pair of jaws 111, 112 separate from each other to release tissue. In Figure 1, tool assembly 11 is in an open position.

Clamp 111 may include a cutting board, and clamp 112 may include a staple cartridge for storing staples. Platform assembly 12 also includes trigger 14 . By operating the trigger 14, the tool assembly 11 can be caused to fire. When the tool assembly 11 is fired, the staples are ejected from the staple cartridge to achieve tissue suturing.

In particular, in some embodiments, the tool assembly 11 may also include a cutter (not shown in the figure). When the tool assembly 11 is fired, the cutter extends and the staples are ejected, thereby simultaneously cutting and suturing the tissue.

Referring to Figures 2A-2E, the trigger 14 is movable between an initial position and an end position. When the trigger 14 is not operated, it is in the initial position. When the trigger 14 is operated, it moves from an initial position to an end position. In Figures 2A, 2C and 2D, the trigger 14 is in the initial position. In Figures 2B and 2E, the trigger 14 is in the end position.

It should be understood that in this disclosure, the terms "initial position" and "end position" do not necessarily mean the two extreme positions of the stroke of a certain member.

Platform assembly 12 also includes a firing mechanism and switching member 15 . The firing mechanism is used to cause the tool assembly 11 to fire. The switching member 15 can move between two positions to switch the firing mechanism between the locked state and the unlocked state.

For convenience of description, below, the position of the switching member 15 corresponding to the locked state of the firing mechanism is called the first position, and the position of the switching member 15 corresponding to the unlocked state of the firing mechanism is called the second position. In FIGS. 2A to 2C , the switching member 15 is in the first position. In Figures 2D and 2E, the switching member 15 is in the second position.

As shown in Figures 2A to 2C, when the switching member 15 is in the first position, the firing mechanism is in a locked state. At this time, as the trigger 14 is operated (that is, as the trigger 14 moves from the initial position to the end position), the firing mechanism does not cause the tool assembly 11 to fire.

As shown in Figure 2D and Figure 2E, when the switching member 15 is in the second position, the firing mechanism is in an unlocked state. At this time, as the trigger 14 is operated (that is, as the trigger 14 moves from the initial position to the end position), the firing mechanism causes the tool assembly 11 to fire.

In one example, the first and second positions of the switch 15 may be relative to the trigger 12 . In a more specific example, the trigger 12 may be provided with a guide rail 144, and the switching member 15 may be disposed in the guide rail 144 and move along the guide rail 144 between opposite first and second positions.

In this implementation, since the state of the firing mechanism can be changed by changing the position of the switch, when the tool assembly 11 is not expected to be fired, the switch can be maintained in the first position to prevent the tool assembly 11 from being accidentally fired. . Therefore, this implementation can improve the safety of the stapler 10 .

With continued reference to Figures 2A-2E, platform assembly 12 may also include a closing mechanism. The closing mechanism is used to cause the tool assembly 11 to switch from open to closed. The closing mechanism includes a first moving part 16 . As the closing mechanism causes the tool assembly 11 to switch from open to closed, the first moving part 16 moves from one position to another.

For ease of description, in the following, the position of the first carrying member 16 when the tool assembly 11 is opened is called the third position, and the position of the first carrying member 16 when the tool assembly 11 is closed is called the fourth position. In Figure 2A, the first moving part 16 is in the third position. In Figures 2B to 2E, the first moving part 16 is in the fourth position.

That is to say, as the tool assembly 11 switches from open to closed, the first moving part 16 moves from the third position to the fourth position. As the tool assembly 11 switches from closed to open, the first moving part 16 moves from the fourth position to the third position.

As shown in FIG. 2A , when the first moving member 16 is located at the third position, the first moving member 16 prevents the switching member 15 from moving from the first position to the second position. In this case, it is difficult to cause the switching member 15 to move from the first position to the second position through normal operation.

As shown in FIGS. 2C and 2D , when the first moving part is in the fourth position, the first moving part 16 no longer prevents the switching part 15 from switching from the first position to the second position. At this time, the switching member 15 can be caused to move from the first position shown in FIG. 2C to the second position shown in FIG. 2D through normal operation.

In this implementation, when the tool assembly is opened, the first moving member in the third position blocks the movement of the switching member 15 from the first position to the second position. In this way, accidental firing of the tool assembly when opened due to misoperation can be avoided, thereby improving the safety of the stapler.

In FIGS. 2A and 2C , the dotted arrows near the switching member 15 may be used to cause the switching member 15 to move from the first position to the second position.

As an example, referring to FIG. 2A , when the first moving member 16 is located at the third position, the first moving member 16 is at least partially located in the movement path of the switching member 15 from the first position to the second position. At this time, the first moving part 16 blocks the switching part 15, thereby preventing the switching part 15 from moving from the first position to the second position.

Referring to FIG. 2C , when the first moving member 16 is located at the fourth position, the first moving member 16 is out of the movement path of the switching member 15 from the first position to the second position. At this time, the first moving part 16 no longer blocks the switching part 15, so that the switching part 15 can move from the first position to the second position under normal operation.

It can be understood that there are many ways for the first moving member to prevent the switching member from moving from the first position to the second position, and is not limited to the above implementation manner.

For example, in another example, the first moving part may be provided with a first magnetic part, and the switching part may be provided with a second magnetic part. When the first moving part is in the third position, the magnetic poles of the first magnetic part and the second magnetic part of the same polarity may face each other, and the repulsive force of the first magnetic part to the second magnetic part may prevent the switching part from moving from the first position. Move to second position. When the first moving part is in the fourth position, the magnetic poles of the two magnetic parts are no longer opposite, so that the switching part can move from the first position to the second position under normal operation. In this implementation, when the first moving member is located at the third position, the first moving member may not be located in the movement path of the switching member from the first position to the second position.

It should be noted that although the first moving member prevents the switching member from moving from the first position to the second position when the first moving member is in the third position, when the force driving the switching member is much greater than the driving force during normal operation, the switching member may It can move from the first position to the second position and push the first moving part away from the third position at the same time.

After the suturing is completed, the tool assembly needs to be switched from closed to open to release the tissue, and the switching member also needs to be reset from the second position to the first position to prevent the tool assembly from being accidentally fired.

These two steps can be achieved through two institutions respectively. The doctor (or surgical robot) can cause the first moving member to move from the fourth position to the third position by operating one mechanism to switch the tool assembly from closed to open, and cause the switch by operating another mechanism. The component is reset from the second position to the first position.

However, this implementation requires more components, which makes the structure of the stapler more complex, thereby increasing the manufacturing cost of the stapler and reducing the reliability of the stapler.

In addition, this implementation requires two steps to switch the tool assembly from closed to open and to reset the switching member from the second position to the first position, which is not conducive to the convenience of operating the stapler.

In addition, if you forget to reset the switching member from the second position to the first position after releasing the tissue, there will be a risk of accidental firing of the tool assembly during subsequent operations. If a tool assembly is accidentally fired, especially if the tool assembly is open, a medical incident may result.

In view of this, in one example, referring to FIG. 2D and FIG. 2A , when the trigger 14 is not operated (that is, when the trigger 14 is in the initial position), the first moving member 16 moves from the fourth position in FIG. 2D to FIG. 2A In the third position in FIG. 2D , the first moving part 16 can push the switching part 15 , thereby causing the switching part 15 to move from the second position in FIG. 2D to the first position in FIG. 2A .

Since no additional mechanism is required to reset the switching member from the second position to the first position, this implementation can reduce the number of components of the stapler and simplify the structure of the stapler. In addition, since no additional operation is required to reset the switch, the implementation of the present disclosure can improve the operating convenience of the stapler.

In addition, in the implementation of the present disclosure, as the tool assembly switches from closed to open, the switching member is automatically reset from the second position to the first position, thereby avoiding forgetting to reset the switching member after the tool assembly is opened. It can be seen that this implementation can reduce the possibility of accidental firing of the tool assembly, especially when the tool assembly is opened. Therefore, this implementation can further improve the safety of the stapler.

In addition, in this implementation, only the first moving member can prevent the switching member from moving from the first position to the second position when the tool assembly is opened, and can also switch the tool assembly from closed to open. At the same time, the switching member is reset from the second position to the first position. It can be seen that in this way, the safety of the stapler can be improved while reducing the number of components of the stapler and simplifying the structure of the stapler.

It should be noted that in other embodiments, the reset of the switching member from the second position to the first position may not be implemented by the first moving member. For example, in some embodiments, when the switching member is in the second position and the trigger is not operated, the switching member may be in a position that blocks the first moving member from returning to the fourth position from the third position. In this implementation, an operating member can be used to first reset the switching member from the second position to the first position, and then reset the first moving member from the fourth position to the third position.

There are many ways to implement the firing mechanism. This disclosure does not specifically limit this. Below, an exemplary description is given of the implementation of the firing mechanism.

Referring again to FIGS. 2A to 2E , the firing mechanism includes an actuating member 17 and an engaging member 18 . The actuating member 17 has an engaging portion 171 adapted to engage with the engaging member 18 . As an example, the engaging portion 171 of the actuating member 17 may be a rack, and the engaging member 18 may be a pawl. The firing mechanism also includes a first force-applying member 19 that exerts a first force on the engaging member 18 to cause the engaging member 18 to engage with the engaging portion 171 .

The actuating member 17 is axially slidably configured, and the actuating member 17 can move axially distally (ie, the right side in FIGS. 2A to 2E ) to cause the tool assembly 11 to fire. It should be noted that the axial direction may refer to the length direction of the stapler 10 , or the axial direction may refer to the extension direction of the elongated body 13 . In one example, the actuating member 17 is slidably sleeved on the elongated body 13 so as to be slidable in the axial direction.

As the trigger 14 moves from the initial position to the end position under operation, the engaging member 18 moves from one position to the other. For the convenience of description, in the following, the position of the engaging member 18 when the trigger 14 is located at the initial position is called the fifth position, and the position of the engaging member 18 when the trigger 14 is located at the end position is called the fifth position. Sixth position. In Figures 2A, 2C and 2D, the engagement member 18 is in the fifth position. In Figures 2B and 2E, the engagement member 18 is in the sixth position.

That is, in the present disclosure, the fifth and sixth positions of the engagement member 18 are relative to the initial and final positions of the trigger 14, respectively. In other words, the fifth position and the sixth position of the engaging member 18 are determined according to the initial position and the end position of the trigger 14 respectively. For example, although the engaging member 18 is in different states due to the different positions of the switching member 15 in FIGS. 2B and 2E , since the trigger 14 is in the end position in both FIGS. 2B and 2E , it can be regarded as the engaging member 18 It is in the sixth position in both Figure 2B and Figure 2E.

When the switching member 15 is in the first position, as shown in FIGS. 2A and 2B , as the engaging member 18 moves from the fifth position in FIG. 2A to the sixth position in FIG. 2B , the switching member 15 supports the engaging member 18 so that The engaging member 18 resists the first force and remains separated from the engaging portion 171 . During this process, since the engaging member 18 remains separated from the engaging portion 171, the actuating member 17 will not move axially distally, and thus the tool assembly 11 will not fire.

When the switching member 15 is in the second position, as shown in FIGS. 2D and 2E , as the engaging member 18 moves from the fifth position in FIG. 2D to the sixth position in FIG. 2E , the switching member 15 is no longer the engaging member 18 A support is provided to cause the engaging member 18 to remain separated from the engaging portion 171 , and the engaging member 18 is engaged with the engaging portion 171 under the first force. During this process, the engaging member 18 pushes the actuating member 17 to move axially distally, thereby causing the tool assembly 11 to fire.

In this way, it is possible to switch the state of the firing mechanism by changing the position of the switching member. In this way, when firing of the tool assembly is not expected, the firing mechanism can be kept in a locked state, thereby avoiding accidental firing of the tool assembly due to misoperation of the trigger.

In addition, this implementation provides the basis for the closing mechanism and the firing mechanism to share the same trigger. For example, in an implementation where the closing mechanism and the firing mechanism share a trigger, when only the tool assembly is required to be closed but not fired, the firing mechanism can be switched to the locked state, so that the tool is actuated by operating the trigger. When the assembly is closed, it will not cause the tool assembly to fire.

Referring back to FIGS. 2A to 2E , as a possible implementation, the engaging member 18 is supported in a pivotable manner about the first axis a1 , and the first force-applying member 19 exerts on the engaging member 18 to cause the engaging member 18 to rotate around the first axis a1 . A first force for axis a1 to rotate in a first direction. In this embodiment, the first direction may be a counterclockwise direction when viewed from the view direction of FIGS. 2A to 2E .

When the switching member 15 is in the first position, as shown in FIGS. 2A and 2B , during the movement of the engaging member 18 from the fifth position to the sixth position, the switching member 15 supports the engaging member 18 so that the engaging member 18 does not Under the first force, it rotates along the first direction around the first axis a1 to engage with the engaging portion 171 .

When the switching member 15 is in the second position, as shown in FIGS. 2D and 2E , during the movement of the engaging member 18 from the fifth position to the sixth position, the switching member 15 no longer provides the engaging member 18 with a Maintaining the support separated from the engaging portion 171 , the engaging member 18 rotates in the first direction about the first axis a1 under the first force to engage with the engaging portion 171 .

In this way, the state of the firing mechanism can be switched by changing the position of the switching member.

It should be understood that although in this embodiment, the meshing member is switchably separated from and meshed with the meshing portion through rotation, in other embodiments, this purpose can also be achieved in other ways. For example, in some embodiments, the engaging member may be slidably supported, and the first force applying member may exert a force on the engaging member causing it to slide toward the engaging member.

Referring back to FIGS. 2A to 2E , as a possible implementation, the engaging member 18 is supported in a manner capable of rotating about the first axis a1 , and the engaging member 18 is capable of revolving in the second direction about the second axis a2 . The fifth position moves to the sixth position. In this embodiment, the second direction may be an opposite direction to the first direction. Viewed from the view direction of FIGS. 2A to 2E , the second direction may be a clockwise direction.

In this way, when the switching member 15 is in the second position, in the process of the meshing member 18 moving from the fifth position to the sixth position by revolving around the second axis a2 in the second direction, the meshing member 18 can be in the first position. Under the action of the force member 19 , the force member 19 rotates along the first direction around the first axis a1 to engage with the engaging portion 171 , thereby pushing the actuating member 17 to move distally along the axial direction.

Referring back to FIGS. 2A to 2E , as a possible implementation, the engaging member 18 is supported by the trigger 14 to rotate around the first axis a1 , and the trigger 14 is pivotably supported around the second axis a2 . In this way, as the trigger 14 rotates from the initial position about the second axis a2 along the second direction from the initial position to the end position under operation, the engaging member 18 can move from the fifth position by revolving around the second axis a2 along the second direction. to sixth position.

Referring to FIG. 3 , in one example, the trigger 14 may include a pair of arms 141 , and each arm 141 may be provided with a through hole 142 . The platform assembly 12 may also include a pin 20 that passes through the through hole 142 of each arm 141 . The engaging member 18 is located between the pair of arms 141 and is pivotably sleeved on the pin 20 , so that the engaging member 18 is supported on the trigger 14 in a manner that is pivotable around the first axis a1. In this implementation, the first axis a1 may be defined by the pin 20 , or the first axis a1 may be the axis of the pin 20 .

It should be understood that in other embodiments, the engaging member may be supported in other ways. For example, in some embodiments, the platform assembly may include an intermediate member secured to the trigger, with the engagement member pivotally supported by the intermediate member.

Referring back to FIG. 1 , the platform assembly 12 may further include a housing 21 to which the trigger 14 may be pivotably supported about the second axis a2 . As an example, referring to FIG. 3 , the housing 21 may include a pair of detachably connected shells 211 , 212 , each of the shells 211 , 212 is provided with a hole 213 on its inner side, and a pair of bosses 143 are provided on opposite sides of the trigger 14 . The trigger 14 is at least partially placed between a pair of housings 211, 212, and a pair of bosses 143 are pivotably inserted into the holes 213 of the housings 211, 212 respectively, thereby enabling the trigger 14 to be supported in a pivotable manner around the second axis a2. on the housing 21. In this implementation, the second axis a2 may be defined by the boss 143 , or in other words, the second axis a2 may be the axis of the boss 143 .

It should be understood that in other embodiments, the trigger may be supported in other ways. For example, in some embodiments, the platform assembly may include an intermediate member secured to the housing, with the trigger pivotally supported by the intermediate member.

Referring to FIG. 3 , as an example, the first force-applying member 19 may be a tension spring 19 . One end of the tension spring 19 is attached to the trigger 14, and the other end is attached to the engaging member 18, thereby exerting a first force on the engaging member 18 that causes the engaging member 18 to rotate in the first direction about the first axis a1.

It should be understood that there are many ways to implement the first force-applying member, and this disclosure does not specifically limit this. For example, in some embodiments, the first force-applying member may also be a torsion spring.

Referring back to FIG. 1 , housing 21 may define handle 214 . When the trigger 14 is operated, the trigger 14 moves toward the handle 214 from an initial position to an end position. When the trigger 14 is released, the trigger 14 moves away from the handle 214 and returns to the initial position from the end position.

Platform assembly 12 may also include force applying member 22 . The force applying member 22 applies a force to the trigger 14 to return the trigger 14 to the initial position from the end position. In this way, when the trigger 14 is released, the trigger 14 can return to the initial position under the action of the force applying member 22 .

As a possible implementation manner, see FIG. 3 , the force applying member 22 is a tension spring, and a boss 215 is provided on the inside of the housing 21 . One end of the force applying member 22 is attached to the boss 215 , and the other end is attached to the trigger 14 .

It can be understood that the implementation of the force applying member 22 is not limited to this. For example, in some embodiments, the force applying member 22 may also be a torsion spring.

The manner in which the actuating member causes the tool assembly to fire may refer to related technologies, and this disclosure does not specifically limit this.

As an example, referring back to FIG. 3 , the firing mechanism also includes a first control member 23 . For example, the first control member 23 may be an elongated push piece. The first control member 23 extends between the actuator member 17 and the tool assembly 11 . The proximal end of the first control member 23 cooperates with the actuating member 17, and the distal end cooperates with the tool assembly 11, so that as the actuating member 17 moves distally along the axial direction, the first control member 23 moves distally along the axial direction. causing tool assembly 11 to fire.

In one example, the proximal end of the first control member 23 may be provided with a hole 231, and the tubular elongated body 13 may be provided with a pair of grooves 131 penetrating its interior and exterior. The firing mechanism may also include a ring 24 and a pin 25 provided with a pair of holes 241 . The first control member 23 is inserted into the elongated body 13 , the ring 24 is sleeved on the elongated body 13 , and the pin is inserted into the hole 231 , a pair of grooves 131 and a pair of holes 241 . As the actuating member 17 moves distally in the axial direction, the actuating member 17 pushes the ring 24 so that the first control member 23 moves distally in the axial direction.

In this implementation, the push piece can follow the actuating member to move distally in the axial direction, and can also relatively rotate around the axis of the elongated body, which provides a basis for realizing the rotation of the tool assembly around the axis of the elongated body.

It can be understood that there are many ways of cooperating between the actuating member and the push piece, which are not limited to the above implementation methods. For example, in some embodiments, the actuator may be directly connected to the push blade.

It should be noted that this disclosure does not specifically limit the manner in which the actuator causes the tool assembly to fire, and reference may be made to related technologies for its implementation.

In one example, the distal end of the first control member 23 may cooperate with the cutter of the tool assembly 11 so that the first control member 23 can move axially distally to push the cutter to move distally. As the cutter moves distally, the cutter cuts the tissue and pushes the firing block of the tool assembly 11 to move distally. During the movement, the firing block can push the staples out of the staple bin, thereby realizing suturing of the tissue.

In another example, as the first control member 23 moves distally in the axial direction, the first control member 23 may directly push the firing block, so that the firing block moves distally to push the staples out of the staple cartridge.

There are many ways to implement the switching element, and this disclosure does not specifically limit this.

As an example, referring to FIGS. 4 and 5 , the switching member 15 has a supporting surface 151 and the trigger 14 is provided with a guide rail 144 . The switching member 15 is placed in the guide rail 144 and can move along the guide rail 144 between opposite first and second positions. As the trigger 14 moves between the initial position and the end position, the switching member 15 follows the movement of the trigger 14 to maintain the matching relationship with the engaging member 18 .

FIG. 6A shows the cooperative relationship between the switching member 15 and the meshing member 18 during the movement of the meshing member 18 from the fifth position to the sixth position when the switching member 15 is in the first position. FIG. 6B shows the cooperative relationship between the switching member 15 and the meshing member 18 during the movement of the meshing member 18 from the fifth position to the sixth position when the switching member 15 is in the second position.

As shown in FIG. 6A , when the switching member 15 is in the first position, as the engaging member 18 moves from the fifth position to the sixth position, the supporting surface 151 supports the engaging member 18 so that the engaging member 18 overcomes the pressure from the first force-applying member 19 The first acting force maintains separation from the engaging portion 171 .

As shown in FIG. 6B , when the switching member 15 is in the second position, as the meshing member 18 moves from the fifth position to the sixth position, the meshing member 18 is separated from the supporting surface 151 , and the meshing member 18 engages with the meshing member under the first force. The part 171 is engaged, thereby pushing the actuating member 17 to move distally along the axial direction, causing the tool assembly 11 to fire.

In this way, it is possible to switchably engage and disengage the engagement member from the engagement portion by changing the position of the switching member.

It should be understood that there are many ways to implement the switching element and are not limited to the above-mentioned ways. For example, in some embodiments, as the switching member moves from the first position to the second position, the switching member may move as a whole in a direction away from the meshing member, so that the meshing member can engage with the meshing member under the action of the first force-applying member. Partial engagement.

As an example, referring to FIG. 4 , FIG. 6A and FIG. 6B , the supporting surface 151 is implemented as a first step surface 151 , the switching member 15 also has a second step surface 152 , and the first step surface 151 protrudes beyond the second step surface 152 .

As shown in FIG. 6A , when the switching member 15 is in the first position, the first step surface 151 supports the engaging member 18 during the movement of the engaging member 18 from the fifth position to the sixth position, so that the engaging member 18 overcomes the first The force is exerted to keep it separated from the engaging portion 171 .

As shown in FIG. 6B , when the switching member 15 is in the second position, during the movement of the engaging member 18 from the fifth position to the sixth position, the engaging member 18 breaks away from the first step surface 151 and is supported by the second step surface 152 , so that the engaging member 18 rotates along the first direction around the first axis a1 under the action of the first force-applying member 19 to engage with the engaging portion 171, thereby pushing the actuating member 17 to move distally along the axial direction, causing the tool assembly to 11 shots.

Since the first step surface protrudes beyond the second step surface, there is a height difference between the two, which provides a space for the engagement member to rotate after being separated from the first step surface, so that when the engagement member is supported by the second step surface, The engaging member can rotate to engage with the engaging portion of the actuating member under the action of the first force-applying member.

In addition, when the meshing member is supported by the second step surface, the second step surface provides support to prevent the meshing member from continuing to rotate in the first direction to separate from the meshing part under the action of the first force-applying member.

In addition, when the engaging part pushes the actuating part, the actuating part exerts a reaction force on the engaging part causing it to continue to rotate in the first direction. The second step surface can provide support for the meshing part to prevent it from continuing to rotate in the first direction under the reaction force, thereby preventing the meshing part from continuing to rotate in the first direction to separate from the meshing part under the reaction force.

It should be understood that in other embodiments, when the switching member is in the second position, during the movement of the engaging member from the fifth position to the sixth position, the engaging member may not be supported by the second step surface, but may be supported by other structures. In this implementation, the second step surface may serve only to provide a height difference that allows the engagement member to rotate.

It should be understood that in other embodiments, the switching member may not have the second stepped surface. The space for the engagement member to rotate can be provided by the height difference between the support surface and the bottom surface of the guide rail. Correspondingly, when the switching member is in the second position, during the movement of the engaging member from the fifth position to the sixth position, the engaging member may be supported by the bottom surface of the guide rail to prevent the engaging member from pushing the actuating member. , under the first acting force and the reaction force from the actuator, continue to rotate in the first direction until it is separated from the meshing part.

There are many ways to move the switching member from the first position to the second position, and this disclosure does not specifically limit this.

As a possible implementation manner, referring to FIGS. 1 to 3 , the platform assembly 12 may further include an operating member 26 , and the operating member 26 may be used to operably move the switching member 15 from the first position to the second position.

In one example, the operating member 26 may be a button 26. Button 26 extends from the inside of housing 21 to outside of housing 21 . When the trigger 14 is not operated, that is, when the trigger 14 is in the initial position, the inner end of the button 16 faces one end of the switching member 15 . At this time, by pressing the button 16, the button 16 can be driven to move toward the switching member 15, so that the switching member 15 is pushed by the inner end of the button 26 to move proximally along the guide rail from the first position in Figure 2C to Figure 2D In the second position, that is, when the trigger 14 is not operated, the first position is located in the distal direction of the second position.

In one example, the platform assembly 12 may further include a force applying member 27 that applies a force to the button 26 to cause it to reset. For example, the force-applying member 27 may be a compression spring sleeved on the button 26 . When the button 26 is pressed, the compression spring 28 yields under pressure. When the button 26 is released, the elastic restoring force of the compression spring 28 resets the button 26 .

Referring to FIGS. 4 to 6B , the platform assembly 12 also includes a second force applying member 28 . In this embodiment, the second force applying member 28 applies a second force to the switching member 15 in the direction from the first position to the second position. The switching member 15 is provided with a first damping portion 153 . The guide rail 144 is provided with a second damping portion 145 .

When the switching member 15 is in the first position, the first damping part 153 and the second damping part 145 cooperate to provide resistance to overcome the second force and maintain the switching member 15 in the first position. When the switching member 15 is subjected to external force (for example, driven by the operating member 26) and moves in the direction from the first position to the second position until the first damping part 153 and the second damping part 145 are disengaged, the switching member 15 is driven from the second force-applying member 28 moves to the second position under the second force.

In this implementation, the switching member is driven by the operating member to move to a position where the first damping part and the second damping part are disengaged, and then continues to move to the second position driven by the second acting force. In this way, only a short stroke of the operating member is required to cause the switching member to move from the first position to the second position. This implementation is advantageous in reducing the size of the stapler due to the relatively short stroke of the operating member.

In addition, if the operating member is used to directly push the switching member to the second position, the stroke of the operating member under the operation of the doctor (or surgical robot) needs to be just enough to push the switching member from the first position to the second position. This places higher operational requirements on doctors (or surgical robots). In contrast, in the implementation of the present disclosure, the operating member only needs to drive the switching member to move to the position where the first damping part and the second damping part disengage, and does not need to move to a certain position accurately. This method has lower requirements for operation accuracy and is therefore more convenient to operate.

In addition, in the above implementation manner of the present disclosure, after the switching member moves to the second position, the second force-applying member can appropriately prevent the switching member from accidentally returning to the first position from the second position. Therefore, this implementation can improve the reliability of the stapler.

As an implementation manner, referring to FIG. 4 and FIG. 6 again, the first damping part 153 and the second damping part 145 may be implemented as convex strips. In particular, the switching member 15 may have a pair of opposite outer surfaces, each outer surface being provided with a first damping portion 153 . Correspondingly, the guide rail 144 may have a pair of inner surfaces respectively facing a pair of outer surfaces of the switching member 15 , and each inner surface is provided with a second damping portion 145 .

When the switching member 15 is in the first position, the first damping part 153 is located on one side of the second damping part 145 and abuts against the second damping part 145 , so that the first damping part 153 and the second damping part 145 provide protection against the second effect. The resistance force keeps the switching member 15 in the first position. When the switching member 15 moves toward the second position under external force (for example, driven by the operating member 26 ) until the first damping part 153 moves to the other side of the second damping part 145 , the first damping part and the second damping part away, and then the switching member 15 continues to move to the second position under the second force from the second force-applying member 28 .

It should be understood that there are many ways to implement the first damping part and the second damping part, and they are not limited to the above-mentioned ways. For example, in some embodiments, one of the first damping part and the second damping part may be a convex strip, and the other may be a groove that matches the convex strip. For another example, in some embodiments, the first damping part and the second damping part may be bosses.

There are many ways to implement the second force-applying member, and this disclosure does not specifically limit this.

As an example, referring again to FIGS. 4 to 6 , the second force-applying member 28 may be a compression spring. The switch 15 also includes a shoulder 154 and the guide rail 144 further includes a blocking portion 147 . The second force-applying member 28 is sleeved on the switching member 15 , with one end pressed against the shoulder 154 and the other end pressed against the blocking portion 147 .

Referring to FIGS. 4 and 6 , the guide rail 144 may also include a first limiting part 146 , a second damping part 145 and the first limiting part 146 are sequentially arranged along the movement direction of the switching member 15 from the first position to the second position. . When the switching member 15 is in the second position, the first limiting portion 146 cooperates with the first damping portion 153 of the switching member 15 to prevent the switching member 15 from leaving the second position under the action of the second force-applying member 28 . That is to say, the first limiting part 146 cooperates with the first damping part 153 of the switching part 15 to stop the switching part 15 in the second position.

Referring again to FIG. 4 and FIG. 6 , in a specific example, the first limiting part 146 may be implemented as a convex strip. More specifically, a limiting portion 146 is provided on each inner surface of a pair of inner surfaces of the guide rail 144 . When the switching member 15 is in the second position, the first limiting portion 146 abuts the first damping portion 153 to prevent the switching member 15 from leaving the second position under the action of the second force-applying member 28 .

Referring again to FIGS. 4 to 6 , the switching member 15 may further include a pair of branch parts 155 . The pair of branch parts 155 may extend along the movement direction of the switching member 15 from the first position to the second position, and the pair of branch parts 155 may be spaced apart in a direction perpendicular to the movement direction, thereby forming a space therebetween. 156. One end of the tension spring 19 (ie, the first force-applying member 19) is attached to the engaging member 18, and the other end is attached to the trigger 14 through the space 156.

Through this implementation, it is possible to prevent the switching member from being detached from the guide rail or flipping over during movement between the first position and the second position. Therefore, this implementation can improve the reliability of the stapler.

Referring again to FIGS. 4 to 6 , the switching member 15 may further include a second limiting portion 157 extending between a pair of branch portions 155 . When the switching member 15 moves along the movement direction from the first position to the second position and leaves the second position, the second limiting portion 157 abuts against the tension spring 19 .

On the one hand, after the switching member moves along the movement direction from the first position to the second position and leaves the second position, the first force-applying member (ie, the tension spring) can block the switching member to prevent the switching member from leaving the guide rail. On the other hand, when the switching member causes the first force-applying member to elastically yield, the elastic restoring force of the first force-applying member can drive the switching member to return to the second position, thereby ensuring that when the first moving member returns to the third position from the fourth position , the switch is in the appropriate position. It can be seen that this implementation method can improve the reliability of the stapler.

It should be understood that although in the above implementation manner, the cooperation between the first force applying member and the second limiting part is used to prevent the switching member from leaving the guide rail, in other embodiments, the cooperation between the first force applying member and the second limiting part The fit can also be used to park the switch in the second position. For example, in some embodiments, the guide rail may not be provided with a first limiting part, and when the switching member is in the second position, the second limiting part may abut against the first force-applying member to stop the switching member. in second position.

Referring to FIG. 7 , the engaging member 18 includes a seat portion 181 and a resisting portion 182 . The engaging member 18 is supported by the switching member 15 via the seat 181 . Platform assembly 12 also includes stop 29 . When the engaging member 18 is in the fifth position and the switching member 15 is in the second position (that is, when the platform assembly 12 is in the state in FIG. 2D ), the stopper 29 abuts against the resisting portion 182 of the engaging member 18 so that the seat 181 (the lowest part) is flush with or higher than the supporting surface 151 in the direction away from the switching member 15 .

It should be noted that in FIG. 7 , the direction pointed by the thick arrow may be the height direction (ie, the direction away from the switching member 15 ), and the dotted line H is used to indicate the height of the support surface 151 . As can be seen from FIG. 7 , in this embodiment, when the engaging member 18 is in the fifth position and the switching member 15 is in the second position, (the lowest part of) the seat 181 is higher than the supporting surface 151 . It can be understood that in other embodiments, when the engaging member 18 is located In the fifth position and the switching member 15 is in the second position, the seat 181 (the lowest part) can also be substantially flush with the support surface 151 .

In this implementation, when the switching member is in the second position and the engaging member is in the fifth position, (the seat of) the engaging member will not block the movement of the switching member from the second position to the first position, which is beneficial to The switching member is reset under the action of the first moving member.

In addition, in this implementation, when the switching member is in the second position and the engaging member is in the fifth position, the stopper abuts (the abutting portion of) the engaging member to separate the engaging portion, so that the engaging member does not blocking the proximal movement of the actuating member in the axial direction; when the engaging member is in the second position, (the abutting portion of) the engaging member leaves the stop member during the movement of the engaging member from the fifth position to the sixth position, Thereby, the meshing piece breaks away from the influence of the stopper and meshes with the meshing portion under the action of the first force-applying piece.

As an example, referring to FIGS. 2A to 3 , the stopper 29 may be a protrusion located inside the housing 21 and formed integrally with the housing 21 . This approach is easy to implement.

It should be understood that the implementation of the stopper is not limited to the above. For example, in some embodiments, the stopper may also be an independent component installed on the housing and fixed relatively to the housing. As another example, in some embodiments, a component of another mechanism of the platform assembly may serve both as a role in the mechanism and as a stop.

Referring back to FIGS. 4 and 7 , the switching member 15 also has a transition surface 158 extending between the first step surface 151 and the second step surface 152 . Both ends of the transition surface 158 may be connected to the first step surface 151 and the second step surface 152 respectively. The transition surface 158 gradually protrudes toward the first step surface 151 . The engagement element 18 has a smooth guide surface 183 facing the switching element 15 . In particular, the guide surface 183 may be a smooth curved surface. In particular, the guide surface 183 may be the bottom surface of the seat 181 .

In this implementation, when the switching member is in the second position, in the process of the meshing member returning from the sixth position to the fifth position, the abutment portion of the meshing member abuts against the stopper, so that the seat portion of the meshing member Leave the second step surface and move to a position that is substantially flush with or exceeds the first step surface (that is, move from the position in Figure 6B to the position in Figure 7). During this process, the cooperation between the transition surface and the guide surface can avoid interference between the seat and the switching part, thereby preventing the engagement part from getting stuck. It can be seen that this implementation method can improve the reliability of the stapler.

There are many ways to implement the closing mechanism, and this disclosure does not specifically limit this. An exemplary implementation of the closing mechanism is described below.

Referring back to FIGS. 2A to 2E , the first moving member 16 is pivotably supported about the third axis a3. In particular, the first moving part 16 may be pivotably supported by the housing 21 about the third axis a3. The first moving part 16 moves between the third position and the fourth position in a rotational manner about the third axis a3. In particular, the first moving part 16 can move from the third position to the fourth position in the second direction about the third axis a3, and can move from the fourth position to the third position in the first direction about the third axis a3.

As shown in FIGS. 2D and 2A , when the switching member 15 is in the second position and when the trigger 14 is not operated (that is, when the engaging member 18 is in the fifth position), the first moving member 16 moves from the fourth position in FIG. 2D location luck Moving to the third position in Figure 2A, the first moving part 16 pushes the switching part 15 on one side thereof, causing the switching part 15 to return to the first position from the second position, thereby switching the firing mechanism from the unlocked state to the locked state.

As an example, referring to FIG. 2A , the first moving member 16 may be provided with a protruding action portion 161 located on one side thereof. During the movement of the first moving part 16 from the fourth position to the third position, the acting part 161 abuts against the switching part 15 .

It can be understood that although in the above implementation manner, the first moving part moves between the third position and the fourth position by rotating, in other embodiments, the first moving part can also slide between the two positions. movement between positions.

As an example, referring back to FIG. 3 , the inner side of each of the shells 211 and 212 may also be provided with a hole 216 , and the opposite sides of the first multi-movable part 16 may be provided with a pair of bosses 162 . A pair of bosses 162 are pivotably inserted into the holes 216 of the shells 211 and 212 respectively, so that the first moving part 16 is supported by the shell 21 in a manner that can pivot about the third axis a3. In this implementation, the third axis a3 may be defined by the boss 162 , or the third axis a3 may be the axis of the boss 162 .

It can be understood that the manner of supporting the first moving part is not limited to the above. For example, in other embodiments, there may also be an intermediate member fixed relative to the housing, and the first moving part may be pivotably supported by the intermediate member about a third axis.

Referring again to FIGS. 2A to 2E , the closing mechanism also includes a second moving part 30 , a third moving part 31 and a linkage part 32 . The first end of the first moving part 16 is pivotably supported by (the housing 21 ) about the third axis a3 , and the second end is pivotally connected to the first end of the second moving part 30 . The second end of the second moving part 30 is pivotally connected to the first end of the third moving part 31 , and the second end of the third moving part 31 is pivotably supported by (the housing 21 ) about the fourth axis a4 .

The linkage 32 is slidably provided in the axial direction. As an example, the linking member 32 is slidably sleeved on the elongated member 13 to be slidable in the axial direction. At least part of the linkage member 32 is located on the proximal side of the third moving member 31 and abuts against the third moving member 31 . As the first moving part 16 rotates around the third axis a3 from the third position to the fourth position, the third moving part 31 rotates around the fourth axis a4. During this process, the third moving part 31 pushes the linkage part 32, so that the linkage part 32 moves axially proximally from the initial position shown in Figure 2A to the end position shown in Figures 2B to 2E, thereby causing the tool assembly to 11 Switch from open to closed.

In this implementation, the closing mechanism can convert the rotation of the first moving part into the sliding of the linkage part, thereby causing the tool assembly to switch from opening to closing. In addition, in this implementation, the third moving part can function as a lever. Specifically, the first end of the third moving part can be regarded as the power point, the second end of the third moving part can be regarded as the fulcrum, and the position of the third moving part in contact with the linkage element can be regarded as the resistance point. It can be seen that this implementation method is relatively labor-saving, which can improve the use experience of the stapler.

As an example, referring back to FIG. 3 , the inner side of each of the shells 211 and 212 may also be provided with a hole 217 , and the opposite sides of the second end of the third moving part 31 may be provided with a pair of bosses 311 . A pair of bosses 311 are pivotably inserted into the holes 217 of the shells 211 and 212 respectively, thereby realizing the second movement of the third moving part 31 . The end is supported by the housing 21 in a pivotable manner about the fourth axis a4. In this implementation, the fourth axis a4 may be defined by the boss 311 , or the fourth axis a4 is the axis of the boss 311 .

It can be understood that the method of supporting the third moving part is not limited to the above. For example, in other embodiments, there may also be an intermediate member that is fixed relative to the housing, and the third moving part may be pivotably supported by the intermediate member about the fourth axis.

As an example, referring again to FIG. 3 , the first moving member 16 may further include a pair of arm portions 163 provided at its second end, and each arm portion 163 is provided with a through hole 164 . The first end of the second moving part 30 is provided with a through hole 301 . Platform assembly 12 may also include pin 33 . The first end of the second moving part 30 extends between a pair of arms 163 of the first moving part 16 , and the pin 33 passes through a pair of through holes 164 and through holes 301 , thereby connecting the second end of the first moving part 16 The end is pivotally connected to the first end of the second moving member 30 .

It can be understood that there are many ways to pivotally connect the first moving part and the second moving part, and are not limited to the above implementation manner. For example, in other embodiments, the second end of the first moving part may be provided with a rotating shaft part, the first end of the second moving part may be provided with a hole adapted to the rotating shaft part, and the rotating shaft part may be inserted into the hole, thereby achieving pivotal connection between the first moving part and the second moving part.

In one example, referring again to FIG. 3 , the third moving member 31 may further include a pair of arm portions 312 provided at its first end, and each arm portion 312 is provided with a through hole 313 . The second end of the second moving part 30 is provided with a through hole 302 . Platform assembly 12 may also include pin 34 . The second end of the second moving part 30 extends between a pair of arms 312 of the third moving part 31 , and the pin 34 passes through a pair of through holes 313 and 302 , thereby connecting the second end of the second moving part 30 The end is pivotally connected to the first end of the third moving member 31 .

It should be understood that there are many ways to pivotally connect the second moving part and the third moving part, and are not limited to the above implementation manner. For example, in some embodiments, the second end of the second moving part may be provided with a rotating shaft part, and the first end of the third moving part may be provided with a hole that matches the rotating shaft part, and the rotating shaft part may be inserted into In this hole, the second moving part and the third moving part can be pivotally connected.

There are many ways for the linkage to cause the tool assembly to switch from open to closed, which is not specifically limited in this disclosure. A possible implementation is given below.

Referring back to FIG. 3 , the closure mechanism may also include a second control 35 . As an example, the second control member 35 may be an elongated pull tab. The second control member 35 extends between the linkage 32 and the tool assembly 11 . The proximal end of the second control member 35 cooperates with the linkage member 32, and the distal end of the second control member 35 cooperates with the tool assembly 11, so that as the linkage member 32 moves proximally along the axial direction, the second control member 35 moves axially toward the The proximal movement causes the tool assembly 11 to switch from open to closed.

There are many ways for the linkage member to cooperate with the second control member, and this disclosure does not specifically limit this.

As an example, referring back to FIG. 3 , the proximal end of the second control member 35 may be provided with a hole 351 , and the tubular elongated body 13 may be provided with a pair of grooves 132 penetrating its interior and exterior. The closure mechanism may also include a ring 36 and a pin 37 provided with a pair of holes 361 . The second control member 35 is inserted into the elongated body 13 , the ring 36 is sleeved on the elongated body 13 , and the pin is inserted into the hole 351 , a pair of grooves 132 and a pair of holes 361 . The linkage piece 32 is sleeved on the ring 36 , and a shoulder is provided on the inner circumference of the linkage piece 32 , and the shoulder is located on the distal side of the ring 36 and abuts against the ring 36 . When the linkage member 32 moves proximally along the axial direction, the linkage member 32 pushes the ring 24, so that the second control member 35 moves proximally along the axial direction, causing the tool assembly 11 to switch from open to closed.

In this implementation, the second control member can follow the linkage member to move axially distally, and the second control member can rotate about the axis of the elongated body, which provides a means for realizing the rotation of the tool assembly about the axis of the elongated body. foundation.

In one example, the platform assembly 12 may also include a cap 38 and a compression spring 39 . The cap 38 is provided with a through hole 381 , and the pin 37 also passes through the through hole 381 of the cap 38 . Compression spring 39 is located on the proximal side of cap 38 . As the linkage member 32 moves from the initial displacement to the end position, the second control member 35 moves proximally, and the compression spring 39 yields under pressure. As the linkage member 32 moves from the end position to the initial position, that is, as the first moving member 16 moves from the fourth position to the third position, the second control member 35 moves distally under the elastic restoring force of the compression spring 39, causing The tool assembly 11 switches from closed to open.

It can be understood that the second control component can also cooperate with the linkage component in other ways. For example, in some embodiments, the proximal end of the second control member may be directly fixedly connected to the linkage member. In this way, as the linkage piece moves from the initial position to the end position, the linkage piece can drive the second control member to move proximally along the axial direction, thereby causing the closing mechanism to switch from open to closed; as the linkage piece moves from the end position to the initial position , the linkage member can drive the second control member to move distally along the axial direction, thereby causing the closing mechanism to switch from closing to opening.

There are many ways for the second control part to cooperate with the tool assembly, and this disclosure does not specifically limit this.

As an example, referring to FIGS. 8A and 8B , clamps 111 and 112 are pivotally connected by pins 113 . The clamp 111 may be provided with a guide groove 114, which is proximal and gradually extends toward the nail cartridge clamp 112 side. The tool assembly 11 also includes a pin 115 attached to the distal end of the second control 35 .

As the second control member 35 moves axially proximally, the pin 115 also moves axially proximally from the position in Figure 8A to the position in Figure 8B. During this process, the pin 115 cooperates with the guide groove 114, and the clamp 111 is driven to rotate around the pin axis 113 from the position in FIG. 8A to the position in FIG. 8B, thereby causing the tool assembly 11 to switch from open to closed.

As the second control member 35 moves axially distally, the pin 115 moves axially distally from the position in Figure 8B to the position in Figure 8A. During this process, the pin 115 cooperates with the guide groove 114, and the clamp 111 is driven to rotate around the pin shaft 113 from the position in FIG. 8B to the position in FIG. 8A, thereby causing the tool assembly 11 to switch from closed to open.

There are many ways to cause the first moving part to move from the third position to the fourth position, and this disclosure does not specifically limit this. Below, an exemplary implementation is given.

Referring to FIGS. 2A and 2B , the first moving member 16 may be driven by the trigger 14 . As the trigger 14 is operated, that is, as the trigger 14 moves from the initial position in FIG. 2A to the end position in FIG. 2B , the first moving member 16 moves from the third position in FIG. 2A to the third position in FIG. 2B driven by the trigger 14 . The fourth position in the.

It should be understood that in this embodiment, the trigger 14 is used to drive both the firing mechanism and the first moving member 16 . However, in other embodiments, the platform assembly 12 may include two triggers, one for actuating the firing mechanism and another for actuating the first moving member.

As an example, the closure mechanism may also include a driver 40 and the platform assembly 12 may further include a guide rail 218 . By way of example, guide rails 218 may be formed on the inner wall of housing 14 . The first end of the driving member 40 is pivotally connected to the trigger 14, and the second end is guided by the guide rail 218.

As shown in FIGS. 2A and 2B , as the trigger 14 moves from the initial position to the end position, the second end of the driving member 40 abuts the first moving member 16 and pushes the first moving member 16 , so that the first moving member 16 moves from the first moving member 16 to the second moving member 16 . Position three moves to position four.

As shown in FIGS. 2B and 2C , when the trigger 14 is released, the trigger 14 returns from the end position to the initial position under the action of the force applying member 22 , and the driving member 40 is driven by the trigger 14 to separate from the first moving member 16 , the first moving member 16 is maintained in the fourth position.

In this way, the first moving part can be driven to move from the third position to the fourth position by operating the trigger. In addition, in this implementation, after the trigger is released, the first moving part will not return to the third position as the trigger returns to the initial position, thus achieving decoupling of the trigger and the first moving part. This provides a basis for maintaining the tool assembly in a closed state after the trigger is released, and also provides a basis for the closing mechanism and the firing mechanism to share the same trigger.

As a possible implementation, referring again to FIG. 3 , the platform assembly 12 may also include a pin 41 . The first end of the driving member 40 can be pivotally connected to the trigger 14 through the pin 41 . The second end of the driving member 40 may be provided with a boss 401, and the boss 401 may be inserted into the guide rail 218.

Referring again to FIGS. 2A to 2E , the closing mechanism further includes a third force applying member 42 , which is used to apply a force on the third moving member 31 to cause the third moving member 31 to rotate from the end position to the initial position.

As an example, the third force applying member 42 may be a compression spring, which is located proximal to the linkage member 32 and presses against the linkage member 32 . In some embodiments, the third force-applying member 42 can be sleeved on the elongated body 13 .

It can be understood that the third force-applying member can be implemented in various ways, and is not limited to the above-mentioned implementation ways. For example, in another example, the third force applying member may also be implemented as a torsion spring.

When the first moving part 16 is in the fourth position, as shown in FIGS. 2B to 2E , the first moving part 16 is located at a position that is substantially collinear with the second moving part 30 , that is, the first end of the first moving part 16 reaches The line connecting the second end and the line connecting the first end to the second end of the second moving member 30 are substantially co-linear.

Alternatively, when the first moving member 16 is located at the fourth position, the first moving member 16 is located at a position reached by passing through a collinear position with the second moving member 30 . That is to say, as the first moving part 16 moves from the third position to the fourth position, the first moving part 16 passes through a position that is collinear with the second moving part 30 .

In the above implementation manner, when the first moving part is located at the fourth position, the first moving part is located at a position that is substantially collinear with the second moving part (or the first moving part is located at a position that passes through a collinear position with the second moving part). And reach the position). At this time, the force exerted by the third force applying member on the third moving member will not cause the first moving member to return to the third position from the fourth position. In this way, after the trigger is released, the first moving member can be maintained in the fourth position, that is, the tool assembly is maintained in a closed state.

In addition, in this implementation, when it is necessary to switch the tool assembly from closed to open, it is only necessary to drive the first moving part away from the fourth position, that is, to drive the first moving part to reverse (ie, rotate in the first direction) to is no longer collinear with the second moving part (or passes through a position collinear with the second moving part), then the first moving part can return to the third position under the action of the third force-applying member, causing the tool assembly to change from closed to Switch to open, and cause the switching member to move from the second position to the first position.

There are many ways to cause the first moving part to leave the fourth position, and this disclosure does not specifically limit this.

As an example, referring to FIGS. 9A and 9B , the platform assembly 12 may further include an operating member 43 . The operating member 43 is used to drive the first moving member 16 to leave the fourth position under operation, that is, to drive the first moving member 16 to move from the position collinear with the second moving member 16 in FIG. 9A to the position in line with the second moving member 16 in FIG. 9B . A position where the moving parts 30 are no longer collinear. Exemplarily, the operating member 43 may be implemented as a cam 42 . When operated, the cam 42 rotates, thereby pushing the first moving part 16 so that the first moving part 16 leaves the fourth position.

There are many ways to stop the first moving part in the fourth position, and this disclosure does not specifically limit this.

As an example, referring to FIG. 9 , the first end of the second moving part 30 may be provided with a rotation stop 303 . When the first moving part 16 rotates in the first direction to the fourth position, the anti-rotation part 303 abuts the first moving part 16 , thereby restricting the first moving part 16 from continuing to rotate after reaching the fourth position. In this way, the first moving part 16 can be stopped at the fourth position.

It can be understood that in other embodiments, the first moving part can be stopped at the fourth position in other ways. For example, in some embodiments, the first moving component may be provided with a rotation stop. For another example, in some embodiments, the first moving part can be blocked by a member fixed relative to the housing, thereby stopping the first moving part in the fourth position.

The specific structure of the stapler 10 is exemplarily described above with reference to the accompanying drawings. Next, refer again to FIGS. 2A to 2E to illustrate the operation process of the stapler 10 .

Initially, platform assembly 12 may be in the state in Figure 2A. At this time, the trigger 14 is at the initial position, the switching member 15 is at the first position, the first moving member 16 is at the third position, and the engaging member 18 is at the fifth position. At this time, the tool assembly 11 is in an open state and the firing mechanism is in a locked state.

As the trigger 14 moves under operation from the initial position to the terminal position, the platform assembly 12 switches from the state in Figure 2A to the state in Figure 2B. During this process, the first moving member 16 moves from the third position to the fourth position, causing the tool assembly 11 to switch from open to closed. In addition, during this process, the engaging member 18 moves from the fifth position to the sixth position. Since the switching member 15 is still in the first position, the firing mechanism is still in a locked state. Therefore, during this process, the engaging member 18 remains separated from the engaging portion 171, thereby not causing the tool assembly 11 to fire.

Next, release trigger 14. After the trigger 14 is released, under the action of the force applying member 22, the trigger 14 returns to the initial position from the end position, and the stapler 10 switches from the state in Figure 2B to the state in Figure 2C. During this process, the engaging member 18 follows the trigger 14 from the sixth position to the fifth position, and the first moving member 16 remains in the third position. As shown in Figure 2C, when the stapler 10 is in the state in Figure 2C, the first moving part 23 remains in the fourth position and the tool assembly 11 remains closed.

Next, the operating member 26 is pressed. Since the first moving part 16 has left the third position at this time, it no longer blocks the switching part 15. Therefore, driven by the operating part 26, the switching part 15 moves from the first position along the guide rail. In the second position, the firing mechanism switches from the locked state to the unlocked state, and the stapler 10 switches from the state in FIG. 2C to the state in FIG. 2D .

Then, operate trigger 14 again. As the trigger 14 moves from the initial position to the end position again, the engaging member 18 moves from the fifth position to the sixth position again, and the stapler 10 switches from the state in FIG. 2D to the state in FIG. 2E . During this process, since the switching member is in the second position, that is, the firing mechanism is in the unlocked state, therefore, as the engaging member 18 moves from the fifth position to the sixth position, the engaging member 18 remains engaged with the engaging portion 171 , thereby pushing the engaging member 18, causing the engaging member 18 to move distally in the axial direction, thereby causing the tool assembly 11 to fire.

Then, after completion of firing, the trigger 14 can be released and the actuator 17 can be pulled back to switch the stapler 10 from the state in Figure 2E to the state in Figure 2D. As shown in FIG. 2D , at this time, the trigger 14 is in the initial position, the first moving part 16 is in the fourth position, the switching part 15 is in the second position, and the engaging part 18 is in the fifth position.

Then, the first moving part or the second moving part may be driven so that the first moving part leaves the fourth position. Or while pulling back the actuating member 17, the first moving member 16 or the second moving member 30 is driven, so that the first moving member 16 leaves the fourth position. After the first moving part 16 leaves the fourth position, under the action of the third force-applying part 42, the first moving part 16 returns to the third position, and the stapler 10 switches from the state in FIG. 2D to the state in FIG. 2A. During this process, as the first moving part returns to the third position, the tool assembly 11 returns from closed to open. At the same time, the first moving part 16 pushes the switching part 15 so that the switching part 15 returns to the first position from the second position, thereby causing the firing mechanism to return from the unlocked state to the locked state.

Other embodiments of the present disclosure also provide a tissue suturing method. This method can be used to suture human or animal tissue. In particular, this method can be used to suture the digestive tract of humans or animals. The method includes: providing the stapler provided in the above embodiments of the present disclosure; and using the stapler to suture the tissue.

Above, certain embodiments of the present disclosure have been illustratively described. It can be understood that the implementation of the present disclosure is not limited to the above-mentioned embodiments. For example, in other embodiments, the platform assembly may include a carrier independent of the trigger, the engagement member may be supported by the carrier, and the switch may be positioned in a guide formed on the carrier. In this implementation, the trigger can be transmission connected with the bearing member, so that the bearing member can move as the trigger is operated, thereby driving the engaging member to move from the fifth position to the sixth position.

It should be understood that although the terms "first" or "second" etc. may be used to describe various elements (such as a first force applying member and a second force applying member) in this disclosure, these elements are not limited by these terms. , these terms are used only to distinguish one element from another.

It should be noted that each of the specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner without conflict. In order to avoid unnecessary repetition, this disclosure discusses various possible combinations. The method will not be further explained.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person familiar with the technical field can think of changes or substitutions within the technical scope of the present disclosure. All are covered by the protection scope of this disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A platform assembly is characterized in that it is suitable for a stapler, and the platform assembly includes:

trigger;

a switching member movable between a first position and a second position; and

A firing mechanism, when the switching member is in the first position, the firing mechanism is operated along with the trigger without causing the tool assembly of the stapler to fire; when the switching member is in the second position , the firing mechanism causes the tool assembly to fire as the trigger is operated.
The platform assembly according to claim 1, wherein the platform assembly further includes a closing mechanism, the closing mechanism includes a first moving part, wherein the first moving part is accompanied by movement from the third position to the fourth position. , the closing mechanism causes the tool assembly to switch from open to closed; when the first moving part is in the third position, the first moving part prevents the switching part from moving from the first position to the second position.
The platform assembly according to claim 2, wherein when the switching member is in the second position, as the first moving member moves from the fourth position to the third position, the The first moving part pushes the switching part to cause the switching to move from the second position to the first position.
The platform assembly according to claim 2 or 3, characterized in that when the first moving member is located in the third position, at least part of the first moving member is located on the switching member from the first position. The position moves to the second position in the movement path; when the first moving part is located at the fourth position, the first moving part breaks away from the movement path.
The platform assembly according to any one of claims 1 to 4, wherein the firing mechanism includes:

an actuating member, including an engaging portion; and

The engaging member moves from the fifth position to the sixth position as the trigger is operated, wherein

When the switching member is in the first position, as the engaging member moves from the fifth position to the sixth position, the engaging member remains separated from the engaging portion;

When the switching member is in the second position, as the engaging member moves from the fifth position to the sixth position, the engaging member engages with the engaging portion to push the actuating member toward Distal movement causing the tool assembly to fire.
The platform assembly according to claim 5, wherein the firing mechanism further includes a first force applying member, the first force applying member applies a first force to the engaging member, so that when the switching member When the engaging member is in the first position, as the engaging member moves from the fifth position to the sixth position, the switching member supports the engaging member so that the engaging member overcomes the first force. remains separated from the meshing portion; when the switching member is in the second position, as the meshing member moves from the fifth position to the sixth position, the first force causes the meshing The piece engages with the engaging part.
The platform assembly according to claim 6, wherein the switching member has a supporting surface, wherein when the switching member is in the first position, the engaging member moves from the fifth position to the first position. In the sixth position, the supporting surface supports the meshing member; when the switching member is in the second position, as the meshing member moves from the fifth position to the sixth position, the meshing member The piece breaks away from the support surface.
The platform assembly according to claim 7, wherein the supporting surface is a first step surface, the switching member further has a second step surface, and the first step surface protrudes beyond the second step surface. , wherein when the switching member is in the first position, as the meshing member moves from the fifth position to the sixth position, the first step surface supports the meshing member; when the switching member When the member is in the second position, as the meshing member moves from the fifth position to the sixth position, the second step surface supports the meshing member, or the second step surface does not support the meshing member. The meshing parts.
The platform assembly according to any one of claims 6 to 8, wherein the engaging member is pivotably supported about a first axis, and the first force applying member exerts a force causing the engaging member to rotate about a first axis. The first force is used to rotate the first axis in a first direction.
9. The platform assembly of claim 9, wherein the engaging member is rotatably supported about the first axis, and the engaging member is oriented about a second axis in a third direction opposite to the first direction. It moves from the fifth position to the sixth position by two-direction revolution.
10. The platform assembly of claim 10, wherein the engagement member is rotatably supported by the trigger about the first axis and the trigger is pivotably supported about the second axis.
The platform assembly according to claim 11, wherein the trigger is provided with a guide rail for guiding the movement of the switching member between the first position and the second position, and the switching member is provided on the in the guide rail.
The platform assembly according to claim 12, wherein the switching member has a first damping part, the platform assembly further includes a second force-applying member, the second force-applying member is directed from the first A second force is exerted on the switching member in a direction from a position to the second position, and the guide rail is provided with a second damping portion, wherein when the switching member is in the first position, the first damping The first damping portion cooperates with the second damping portion to provide resistance to overcome the second force and maintain the switching member in the first position.
The platform assembly according to claim 13, wherein the guide rail is further provided with a first limiting part, and the second damping part and the first limiting part are located between the switching member and the first limiting part. are arranged sequentially in the movement direction from one position to the second position, wherein when the switching member is at the second position, the first limiting part cooperates with the first damping part to prevent the switching member from Leaving the second position under the second force.
The platform assembly of any one of claims 12 to 14, further comprising a pusher, wherein the pusher is operable to move toward the trigger when the trigger is not operated. The switching member moves to push the switching member, so that the switching member moves from the first position to the The second position; the switching member is provided with an escape portion to avoid interference with the pushing member when it follows the movement of the trigger.
The platform assembly according to any one of claims 8 to 15, wherein the platform assembly further includes a stopper, the engaging member includes a resisting portion and a seat portion, the seat portion is adapted to be The switching member is supported, wherein when the engaging member is in the fifth position, the stop member abuts against the resisting portion so that the seat exceeds the first first position in a direction away from the switching member. The step surface may be substantially flush with the first step surface.
The platform assembly according to claim 16, wherein the switching member further has a transition surface extending between the first step surface and the second step surface, and the transition surface tends to the first step surface. The step surface gradually protrudes, and the engaging member has a smooth guide surface facing the switching member. 18. The platform assembly according to any one of claims 5 to 17, wherein the switching member includes a pair of branch parts, the first force-applying member is a tension spring, and one end of the tension spring is connected to The other end of the engaging member and the tension spring passes through the space between the pair of branch parts and is connected to the trigger.
The platform assembly according to claim 18, wherein the switching member further includes a second limiting portion extending between the pair of branch portions, and the second limiting portion and the tension spring extend along the The movement directions of the switching member from the first position to the second position are arranged sequentially.
The platform assembly according to any one of claims 2 to 4, wherein the first end of the first moving member is pivotably supported about a third axis, and the closing mechanism further includes:

a second moving part, the first end of which is pivotally connected to the second end of the first moving part;

A third moving member has a first end pivotally connected to the second end of the second moving member, and a second end thereof is pivotally supported about the fourth axis; and

The linkage member is slidable in the axial direction and abuts against the third moving member, wherein

As the first moving part rotates around the third axis from the third position to the fourth position, the third moving part rotates around the fourth axis and pushes the linkage part axially toward Proximal movement causing the tool assembly to switch from open to closed.
The platform assembly according to any one of claims 2 to 4 and 20, wherein when the first moving member is in the third position, as the trigger is operated, the trigger drives the The first moving part moves from the third position to the fourth position.
A stapler, characterized by comprising the platform assembly according to any one of claims 1 to 21.