Handle assembly and surgical instrument comprising same

Abstract

A handle assembly of a surgical instrument, comprising: a housing (100), wherein a part of the housing (100) is configured as a handle portion (110), and a cavity (120) of the handle portion (110) is provided with an end opening (112-1); a cover body (200), wherein the cover body (200) is connected to an end portion (112), so that the cover body (200) rotates between an open position and a closed position; a switch assembly (300), comprising a switch (310); and a switch control assembly (400), configured to drive the switch (310) to move between a first position and a second position by moving a switch controller (410) when the cover body (200) is located at the closed position. In the handle assembly, by arranging the switch controller (410) on the cover body (200), a reusable core body (20) can be activated or deactivated when the cover body (200) is in a closed state, so that the risk that the surgical instrument is contaminated during use is reduced, and the operation is simpler.

Description

Handle assembly and its surgical instruments

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202410567557.7, filed on May 9, 2024, entitled “Handle Assembly and Surgical Instrument Thereof,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to the field of medical handle technology, and more particularly to a handle assembly and its surgical instrument. Background Technology

[0004] Currently, medical devices with cutting and suturing functions are widely used in surgical procedures. These devices typically include a handle, adapter, and end effector that houses a reusable core. Electric staplers are one such common type of medical device. Summary of the Invention

[0005] According to embodiments of this disclosure, a handle assembly and a surgical instrument thereof are provided.

[0006] According to a first aspect of this disclosure, a handle assembly for a surgical instrument is provided, comprising: a housing, a portion of which is configured as a handle, the handle having a cavity for receiving at least a reusable core, the cavity having an end opening at an end of the handle; a cover connected to the end opening to allow the cover to rotate between an open position and a closed position; a switch assembly disposed on the reusable core, the switch assembly including a switch configured to move between a first position and a second position to control the opening or closing of the reusable core; and a switch control assembly located on the cover and including a switch controller configured to: when the cover is in the closed position, move the switch controller to move the switch between the first position and the second position.

[0007] In at least one embodiment, the switch controller includes a body and an open slot located on the body. The switch controller has three control positions, namely a first control position, a second control position, and a third control position. The second control position is located between the first control position and the third control position. The switch controller and the switch are configured such that when the switch controller is in the second control position, the switch is located in the open slot, such that when the body moves, the open slot drives the switch to move.

[0008] In at least one embodiment, the switch controller is in the second control position, the switch is in the first position, and the switch controller is configured to move from the second control position to the third control position, such that the open slot drives the switch to the second position.

[0009] In at least one embodiment, the switch controller is in the second control position, the switch is in the second position, and the switch controller is configured to move from the third control position to the first control position, such that the open slot drives the switch to the first position.

[0010] In at least one embodiment, the switch control assembly further includes a snap-fit ​​assembly, the cover has an opening, the switch controller is fixed to the opening of the cover via the snap-fit ​​assembly and is movable within a plane defined by the intersection of a first direction and a second direction.

[0011] In at least one embodiment, the latching assembly includes at least one latching member disposed on the body, the end of the latching member being configured as a hook portion, the hook portion being configured to engage with the opening of the cover to restrict the switch controller from moving in a third direction, the third direction being perpendicular to the plane.

[0012] In at least one embodiment, the snap-fit ​​assembly further includes a reinforcing rib disposed between the side of the open slot and the snap-fit ​​member, so that the snap-fit ​​member is fixedly connected to the side of the open slot.

[0013] In at least one embodiment, the fastener includes two first fasteners connected to a first side of the open slot, and one of the two first fasteners corresponds to a control position.

[0014] In at least one embodiment, the fastener includes two second fasteners connected to the second side of the open slot, and one of the two second fasteners corresponds to a control position.

[0015] In at least one embodiment, the cover includes a limiting groove disposed on the side of the opening, the limiting groove including a recessed portion recessed in a direction away from the center of the opening; the switch control assembly includes at least one limiting member disposed on the body, the limiting member being disposed on the side of the open slot and including a protruding portion protruding in a direction away from the center of the opening; the protruding portion and the recessed portion are configured such that when the switch controller moves in the second direction, the protruding portion is embedded in the recessed portion to limit the switch controller to any one of the three control positions.

[0016] In at least one embodiment, the limiting groove includes a plurality of recesses, the plurality of recesses including three first recesses, the three first recesses being disposed at intervals on a first side of the opening, the three first recesses respectively corresponding to the three control positions; the at least one limiting member includes a first limiting member disposed on a first side of the open groove, the first limiting member including a first protrusion, the first protrusion being configured such that when the switch controller moves in the second direction, the first protrusion is embedded in one of the three first recesses to limit the switch controller to the corresponding control position.

[0017] In at least one embodiment, the plurality of recesses further includes three second recesses, which are spaced apart from each other on the second side of the opening opposite to the first side. The three second recesses correspond to three control positions respectively. The at least one limiting member further includes a second limiting member disposed on the second side of the open slot. The second limiting member includes a second protrusion, which is configured such that when the switch controller moves in the second direction, the second protrusion is embedded in one of the three second recesses to limit the switch controller to the corresponding control position.

[0018] In at least one embodiment, the protrusion of the limiting member is provided with two guide surfaces on the side facing the recess, the guide surfaces being configured to guide the protrusion of the limiting member into the recess along the third direction when the switch controller is fixed to the opening of the cover.

[0019] In at least one embodiment, the limiting member is elastic, and when the switch controller moves along the second direction, the limiting member is configured to rebound along the first direction toward a center away from the opening, so that the protrusion leaves the recess in which it is located and enters the next recess.

[0020] In at least one embodiment, the planar shape of the open slot is an elliptical ring.

[0021] According to a second aspect of this disclosure, a surgical instrument is also provided, including the handle assembly described in any of the above embodiments.

[0022] In at least one embodiment, the surgical instrument further includes a shaft assembly connected to the handle assembly, and another portion of the housing is configured as a mating portion that engages with the shaft assembly, such that the handle and the mating portion are integral structures.

[0023] In at least one embodiment, the front end of the reusable core has a self-rotating power output shaft, which is configured such that when the reusable core is in the open state, the power output shaft rotates around the axis within a preset angle range until the power output shaft is connected to the slot in the docking part, at which point the power output shaft stops rotating.

[0024] In at least one embodiment, the outer surface of the power output shaft has an outer guide structure, and the inner surface of the slot has an inner guide structure that matches the shape of the outer guide structure, so that the power output shaft and the slot are connected to each other.

[0025] In at least one embodiment, the switch assembly is located on the end face of the reusable core, and a pull ring is provided on the end face to remove the reusable core from the cavity or to place the reusable core into the cavity via the pull ring.

[0026] This embodiment of the present disclosure solves the problem that when the operator needs to reopen the cover to open the reusable core, bacteria on the reusable core fall onto the outer shell of the surgical instrument and cause bacterial infection during the operation. It achieves the technical effect of turning the reusable core on and off while the cover is closed and keeping the surgical instrument in a sterile state during use. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0028] Figure 1 is a schematic diagram of a surgical instrument (excluding a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the open position;

[0029] Figure 2 is a structural schematic diagram of a reusable core according to an embodiment of the present disclosure;

[0030] Figure 3 is a schematic diagram of a surgical instrument (including a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the open position;

[0031] Figure 4 is a schematic diagram of a surgical instrument (including a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the closed position;

[0032] Figure 5 is a cross-sectional schematic diagram of the cover of the surgical instrument in Figure 4;

[0033] Figure 6 is a schematic diagram of the structure of a switch control assembly according to an embodiment of the present disclosure;

[0034] Figure 7A is a plan view of the cover according to an embodiment of the present disclosure;

[0035] Figure 7B is a partially enlarged schematic diagram of Figure 7A;

[0036] Figure 8A is a plan view of the cover and switch control assembly according to an embodiment of the present disclosure;

[0037] Figure 8B is a partially enlarged schematic diagram of Figure 8A; and

[0038] Figure 9 is a schematic diagram of a surgical instrument. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” indicate that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0041] Figure 9 is a schematic diagram of a surgical instrument, such as an electric stapler. The electric stapler includes a handle assembly A10, a shaft assembly A30, and an end effector A40. The handle assembly A10 includes a handle A110 and a mating part A130, and the handle A110 and the mating part A130 are detachably connected. In actual operation, a reusable core (e.g., a battery cell) is first inserted into the handle A110 of the electric stapler through the bottom opening A110-1, and then the bottom opening A110-1 is closed with the bottom cover A110-2.

[0042] Before using an electric stapler, the operator typically performs the following two steps: 1) turning on the switch on the reusable core; and 2) rotating the cover A110-2 from the open position to the closed position to seal the bottom opening A110-1. However, in practice, operators often forget to turn on the reusable core and directly rotate the cover to the closed position. In this case, to open the reusable core, the cover must be rotated from the closed position to the open position. The disadvantage of this approach is that if the surface of the reusable core is contaminated (e.g., due to poor sterilization conditions and incomplete bacteria removal), bacteria from the reusable core can fall onto the surgical instrument casing during the process of reopening the cover and turning on the switch, potentially causing bacterial infection during the procedure and increasing operational complexity. Furthermore, during the use of the electric stapler, if the operator wants to close the switch on the reusable core, the cover must be opened first, which increases the risk of bacterial contamination and further complicates the operation.

[0043] According to an embodiment of this disclosure, a handle assembly for a surgical instrument is provided, including a housing, a cover, a switch assembly, and a switch control assembly. A portion of the housing is configured as a handle, the handle having a cavity that accommodates at least a reusable core, the cavity having an end opening at one end of the handle; the cover is connected to the end opening to allow the cover to rotate between an open position and a closed position; the switch assembly is disposed on the reusable core, the switch assembly including a switch configured to move between a first position and a second position to control the opening or closing of the reusable core; the switch control assembly is located on the cover and includes a switch controller configured to, when the cover is in the closed position, move the switch controller to move the switch between the first and second positions.

[0044] According to embodiments of this disclosure, a surgical instrument is also provided, including the aforementioned handle assembly.

[0045] In the handle assembly and surgical instruments provided in the above-described embodiments of this disclosure, by providing a switch controller on the cover, the reusable core can be switched on and off while the cover is closed. This not only reduces the risk of bacterial contamination during the use of the surgical instruments, but also simplifies operation.

[0046] The present disclosure will now be described through specific embodiments. To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present disclosure appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0047] Figure 1 is a structural schematic diagram of a surgical instrument (excluding a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the open position; Figure 2 is a structural schematic diagram of a reusable core according to an embodiment of the present disclosure; Figure 3 is a structural schematic diagram of a surgical instrument (including a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the open position; Figure 4 is a structural schematic diagram of a surgical instrument (including a reusable core) according to an embodiment of the present disclosure, wherein the cover is in the closed position.

[0048] For example, as shown in Figures 1 to 4, a surgical instrument 1 includes a handle assembly 10, a reusable core 20, and a shaft assembly 30, the shaft assembly 30 being connected to the handle assembly 10 (e.g., detachably connected). For example, the shaft assembly 30 includes a proximal end (near the operator) and a distal end (away from the operator) opposite each other in its extending direction, the handle assembly 10 being disposed at and connected to the proximal end of the shaft assembly 30. The surgical instrument 1 also includes an end effector (not shown) disposed at the distal end of the shaft assembly 30. This end effector includes a suture / cutting mechanism that sutures and cuts target tissue to form a suture pattern such as a straight line.

[0049] For example, the handle assembly 10 includes a housing 100, a cover 200, a switch assembly 300 disposed on the reusable core, and a switch control assembly 400 located on the cover 200. For example, a portion of the housing 100 is configured as a handle 110, while another portion is configured as a mating portion 130 that abuts against the shaft assembly 30; that is, the handle 110 and the mating portion 130 are integrally formed. The handle 110 has a cavity 120 that at least accommodates the reusable core 20, and the cavity 120 has an end opening 112-1 at an end 112 of the handle 110, where "end 112" refers to the end of the handle 110 away from the shaft assembly 30 or the mating portion 130. The cover 200 is connected to the end 112 to cover the end opening 112-1. For example, the cover 200 is pivotally connected to the end 112 to allow the cover 200 to rotate between an open position and a closed position. The “open position” can be any position in which the cover 200 is not in the closed position, and it can include a variety of positional situations (such as the cover 200 being in a horizontal, tilted, or vertical position).

[0050] For example, the switch assembly 300 includes a switch 310 configured to move between a first position P1 and a second position P2 to control the opening or closing of the reusable core 20. The switch control assembly 400 includes a switch controller 410, a latching assembly 420, and a limiting member 430 disposed on the main body 412 (as shown in Figure 6). The switch controller 410 is configured such that when the cover 200 is in the closed position, moving the switch controller 410 causes the switch 310 to move between the first position P1 and the second position P2. The latching assembly 420 and the limiting member 430 will be described in detail below. Here, "first position P1" and "second position P2" correspond to the positions of the switch 310 when the reusable core 20 is opened or closed, for example, the first position P1 and the second position P2 are marked with dashed lines in Figure 3. As can be seen from Figure 3, when the switch 310 is in the first position P1, the reusable core 20 is open. In other embodiments, the first position P1 and the second position P2 can be interchanged as needed, that is, the "first position P1" and the "second position P2" correspond to the positions of the switch 310 when the reusable core 20 is closed or open.

[0051] Figure 5 is a cross-sectional schematic diagram of the cover of the surgical instrument of Figure 4. Figure 6 is a structural schematic diagram of the switch control assembly according to an embodiment of the present disclosure.

[0052] For example, as shown in Figures 5 and 6, the switch controller 410 includes a main body 412 and an open slot 414 located on the main body 412. The switch controller 410 has three control positions: a first control position C1, a second control position C2, and a third control position C3. The second control position C2 is located between the first control position C1 and the third control position C3, for example, in the middle position between them. For ease of understanding, the term "control position" here refers to the position of the component of the switch controller 410 that performs limit control. Figure 5 schematically shows the positional relationship between the first control position C1, the second control position C2, the third control position C3, the first position P1, and the second position P2. The specific details of the switch controller 410 and the control positions will be described in detail later. The switch controller 410 and the switch 310 are constructed such that when the switch controller 410 is in the second control position C2, the switch 310 is located in the open slot 414, so that when the main body 412 moves, the open slot 414 drives the switch 310 to move. For example, as shown in Figure 5, regardless of whether the switch 310 is in the first position P1 or the second position P2, the switch 310 is located in the open slot 414. Thus, when the main body 412 moves, the open slot 414 drives the switch 310 to move.

[0053] In one embodiment, the planar shape of the open slot 414 is a near-elliptical ring to ensure that the open slot 414 can better accommodate the switch. For example, the opening of the open slot 414 is configured to face the switch 310 and has a width along a first direction (e.g., D1 shown in the figure) and a length along a second direction (e.g., D2 shown in the figure), wherein the length is greater than the width. This configuration facilitates at least a portion of the switch 310 (whether in the first position P1 or the second position P2) extending into the open slot 141, further ensuring that the open slot 414 drives the switch 310 to move. It is understood that in other embodiments of this disclosure, the planar shape of the open slot 414 can also be other shapes such as rectangles, and this disclosure does not limit this.

[0054] In practice, on the one hand, before using surgical instruments (as shown in Figure 9) for surgery, operators may forget to open the reusable core and directly rotate the cover to the closed position. In this case, to open the reusable core, the cover must first be rotated from the closed position to the open position. The disadvantage of this approach is that if the surface of the reusable core is contaminated (e.g., due to poor sterilization conditions and incomplete bacteria removal), bacteria from the reusable core can fall onto the outer shell of the surgical instrument during the operation of reopening the cover and opening or closing the reusable core, potentially causing bacterial infection of the surgical instrument during surgery and increasing the complexity of the operation. On the other hand, during surgery, surgical instruments need to be temporarily closed for later use. If the operator wants to close the reusable core, the cover must be opened first, which can easily lead to the risk of bacterial contamination and further complicate the operation.

[0055] In the above-described embodiments of this disclosure, by providing a switch controller 410 on the cover 200, the reusable core 200 can be opened or closed when the cover 200 is in a closed state, which not only reduces the risk of bacterial contamination of surgical instruments during use, but also simplifies the operation.

[0056] In this embodiment of the present disclosure, when the cover 200 is in the closed position, the operator can move the switch 310 via the switch controller 410. In other words, when the switch controller 410 is in any of the first control position C1, the second control position C2, or the third control position C3, it can control the switch 310 to move between the first position P1 and the second position P2. The opening or closing process of the switch 310 is described below using the second control position C2 as an example.

[0057] In one embodiment, as shown in FIG5, the switch controller 410 is in the second control position C2, and the switch 310 is in the first position P1, at which time the switch 310 is turned on. The switch controller 410 is configured to move from the second control position C2 to the third control position C3, such that the open slot 414 drives the switch 310 to the second position P2 to turn off the switch 310. When it is necessary to turn the switch 310 back on, the switch controller 410 can be moved from the third control position C3 to the first control position C1, such that the open slot 414 drives the switch 310 back to the first position P1 to turn the switch 310 back on.

[0058] In another embodiment, as shown in FIG5, the switch controller 410 is in the second control position C2, and the switch 310 is in the second position P2, at which time the switch 310 is closed. The switch controller 410 is configured to move from the second control position C2 to the first control position C1, such that the open slot 414 drives the switch 310 to the first position P1 to turn on the switch 310. When it is necessary to turn off the switch 310 again, the switch controller 410 can be moved from the first control position C1 to the third control position C3, such that the open slot 414 drives the switch 310 back to the second position P2 to turn off the switch 310 again.

[0059] To facilitate further description of specific features in this disclosure, Figures 4 and 5 illustrate three directions: D1 (i.e., the first direction), D2 (i.e., the second direction), and D3 (i.e., the third direction). Directions D1 and D2 lie in the same plane and intersect each other (e.g., are perpendicular), while direction D3 is perpendicular to this plane; that is, direction D3 is perpendicular to both directions D1 and D2. This plane is, for example, the plane containing the cover 200.

[0060] Figure 7A is a plan view of the cover according to an embodiment of the present disclosure. Figure 7B is a partially enlarged schematic diagram of Figure 7A. Figure 8A is a plan view of the cover and the switch control assembly according to an embodiment of the present disclosure. Figure 8B is a partially enlarged schematic diagram of Figure 8A.

[0061] As shown in Figures 6 to 8B, the cover 200 has an opening 210. The switch controller 410 is fixed to the opening 210 of the cover 200 via a snap-fit ​​assembly 420 (as shown in Figure 7A) and can move within a plane defined by the intersection of the D1 and D2 directions. Here, the "snap-fit ​​assembly 420" restricts the movement of the switch controller 410 in the D3 direction, thereby ensuring that the switch controller 410 can move smoothly within the plane.

[0062] For example, the latching assembly 420 includes at least one latching member 422 (e.g., four shown in the figure) disposed on the body 412. The end of the latching member 422 is configured as a hook 4222, which is engaged with the opening 210 of the cover 200 to restrict the movement of the switch controller 410 in the D3 direction. Further, for example, the latching assembly 420 also includes a reinforcing rib 424 disposed between the side of the open slot 414 and the latching member 422, so that the latching member 422 is fixedly connected to the side of the open slot 414. The reinforcing rib 424 ensures that when the switch controller 410 moves in the D2 direction, the latching member 422 does not move towards the center of the opening 210 in the D1 direction, thus providing support and reinforcement for the latching member 422. Furthermore, the reinforcing rib 424 prevents the latching member 422 from springing back in the D1 direction.

[0063] In one embodiment, as shown in FIG6, the latching member 422 includes two first latching members 422-1, which are connected to the first side 414-S1 of the open slot 414. One of the two first latching members 422-1 corresponds to a control position. For example, the two first latching members 422-1 correspond to the first control position C1 and the third control position C3, respectively. By providing two first latching members 422-1 on the first side 414-S1, the switch controller 410 is more securely latched onto the cover.

[0064] Further, in one embodiment, as shown in FIG6, the latching member 422 includes two second latching members 422-2, which are connected to the second side 414-S2 of the open slot 414. One of the two second latching members 422-2 corresponds to a control position. For example, the two second latching members 422-2 correspond to the first control position C1 and the third control position C3, respectively. By setting two first latching members 422-1 on the second side 414-S2, on the one hand, the latching effect between the switch controller 410 and the cover on the second side 414-S2 is enhanced; on the other hand, considering that setting latching members 422 on one side of the switch controller 410 may easily cause uneven force on the switch controller 410, by setting multiple latching members 422 on both sides simultaneously, the switch controller 410 is subjected to uniform force while obtaining a better latching effect.

[0065] It should be noted that the "first side 414-S1" and "second side 414-S2" of the open slot 414 are located on opposite sides of the open slot 414 on D1 (as shown in Figure 6).

[0066] Referring again to Figures 6 through 8B, for example, the switch control assembly 400 further includes at least one limiting member 430 (e.g., two shown in Figure 6) disposed on the body 412. The limiting member 430 is disposed on the side of the open slot 414 and includes a protrusion 432 protruding in a direction away from the center of the opening 210. The cover 200 includes a limiting groove 220 disposed on the side of the opening 210, the limiting groove 220 including a recess 222 recessed in a direction away from the center of the opening 210. The protrusion 432 and the recess 222 are configured such that when the switch controller 410 moves in the D2 direction, the protrusion 432 engages with the recess 222 to limit the switch controller 410 to any of the three control positions. By providing the protrusion 432 and the recess 222, the movement of the switch controller 410 in the D2 direction becomes controllable, thereby allowing for more precise planning and adjustment of the movement displacement of the switch controller 410, and thus more precise movement of the position of the switch 310. For ease of description, the location of the "protrusion 432" in this embodiment is defined as a "control position". Figure 8B shows the positions of the first control position C1, the second control position C2 and the third control position C3 with dashed lines.

[0067] In one embodiment, the protrusion 432 of the limiting member 430 is provided with two guide surfaces 4322 on the side facing the recess 222 (as shown in FIG. 6). Each guide surface 4322 is configured to guide the protrusion 432 of the limiting member 430 into the recess 222 along the D3 direction when the switch controller 410 is installed into the opening 210 of the cover 200. By providing the guide surfaces 4322, it is easier to install the switch controller 410 onto the cover 200 via the opening 210.

[0068] Referring to Figures 7A to 8B, in one embodiment, the limiting groove 220 includes a plurality of recesses 222, and the plurality of recesses 222 include three first recesses 222-1 (as shown in Figure 7B, for ease of distinction, the three first recesses 222-1 can be defined as first recesses 222-1A, first recesses 222-1B and first recesses 222-1C respectively along the D2 direction). The three first recesses 222-1 are disposed at intervals on the first side 210-S1 of the opening 210, and the three first recesses 222-1 correspond to three control positions respectively, that is, the first recess 222-1A corresponds to the first control position C1, the first recess 222-1B corresponds to the second control position C2, and the first recess 222-1C corresponds to the third control position C3.

[0069] In one embodiment, at least one limiting member 430 includes a first limiting member 430-1 disposed on a first side 414-S1 of the open slot 414. For example, in the D2 direction, the first limiting member 430-1 is located between two first latching members 422-1. The first limiting member 430-1 includes a first protrusion 432-1 configured such that when the switch controller 410 moves on D2, the first protrusion 432-1 engages in one of three first recesses 222-1 to limit the switch controller 410 to a control position corresponding to the first recess 222-1. For example, as shown in FIG8B, the first protrusion 432-1 engages in a first recess 222-1B located at the second control position C2, thereby precisely limiting the switch controller 410 to the second control position C2.

[0070] In this embodiment of the present disclosure, by providing three first recesses 222-1 and a first limiting member 430-1, the first protrusion 432-1 of the first limiting member 430-1 can be embedded in different recesses (i.e., first recesses 222-1A, first recesses 222-1B and first recesses 222-1C) during the movement, making the movement of the switch controller 410 in the D2 direction controllable, thereby more accurately planning and adjusting the movement displacement of the switch controller 410, and thus more accurately moving the position of the switch.

[0071] Furthermore, in one embodiment, the plurality of recesses 222 further include three second recesses 222-2 (as shown in FIG7B, for ease of distinction, the three second recesses 222-2 can be defined as second recesses 222-2A, second recesses 222-2B and second recesses 222-2C respectively along the D2 direction). The three second recesses 222-2 are disposed at intervals on the second side 210-S2 of the opening 210 opposite to the first side 210-S1, and the three second recesses 222-2 correspond to three control positions respectively, that is, the second recesses 222-2A corresponds to the first control position C1, the second recesses 222-2B corresponds to the second control position C2, and the second recesses 222-2C corresponds to the third control position C3.

[0072] In one embodiment, at least one limiting member 430 further includes a second limiting member 430-2 disposed on the second side 414-S2 of the open slot 414. For example, in the D2 direction, the second limiting member 430-2 is located between two second latching members 422-2. The second limiting member 430-2 includes a second protrusion 432-2 configured such that when the switch controller 410 moves in the D2 direction, the second protrusion 432-2 engages with one of three second recesses 222-2 to limit the switch controller 410 to a control position corresponding to the second recess 222-2. For example, as shown in FIG8B, the second protrusion 432-2 engages with the second recess 222-2 located at the second control position C2, thereby precisely limiting the switch controller 410 to the second control position C2.

[0073] In this embodiment, by providing three second recesses 222-2 and one second limiting member 430-2, the second protrusion 432-2 of the second limiting member 430-2 can be embedded in different recesses (i.e., second recesses 222-1A, 222-1B, and 222-1C) during movement, making the movement of the switch controller 410 in the D2 direction more controllable. Furthermore, considering that simply providing three first recesses 222-1 and one first limiting member 430-1, while making the movement of the switch controller 410 in the D2 direction controllable, may lead to unstable movement of the switch controller 410 due to uneven force distribution on the switch controller 410 (i.e., the first limiting member is subjected to the force of one of the first recesses 222-1). Therefore, in this example, providing three more second recesses 222-2 and one second limiting member 430-2 can make the switch controller 410 experience more even force and move more stably. This allows for more precise planning and adjustment of the movement displacement of the switch controller 410, thereby enabling more accurate movement of the switch position.

[0074] It should be noted that the "first side 210-S1" and "second side 210-S2" of the opening 210 are located on opposite sides of the opening on D1 (as shown in Figure 7A).

[0075] In one embodiment, the limiting member 430 is elastic, and when the switch controller 410 moves along the D2 direction, the limiting member 430 is configured to rebound along the D1 direction away from the center of the opening 210, so that the protrusion 432 leaves the recess where it is located and enters the next recess. The above rebound process is described below using the first protrusion as an example.

[0076] For example, suppose the switch controller 410 is in the second control position C2, i.e., the first protrusion 432-1 (refer to FIG. 8B) is in the first recess 222-1B (refer to FIG. 7B). When the operator applies a force in the D2 direction to the switch controller 410 to move the switch controller 410 upward, this force pushes the first protrusion 432-1 out of the first recess 222-1B. At this time, the limiting member 430 tilts in the D1 direction toward the center of the opening 210. Since the limiting member 430 has a certain elastic restoring force, when the switch controller 410 continues to move upward, the limiting member 430 can rebound in the D1 direction away from the center of the opening 210, so that the first protrusion 432-1 enters the next first recess 222-1A.

[0077] In this embodiment, the limiting member is configured to be elastic, which has the following beneficial effects: 1) If the operator stops applying force before the first protrusion 432-1 has left the first recess 222-1B, the elastic force of the limiting member 430 will drive the first protrusion 432-1 back to the first recess 222-1B, thereby ensuring that the switch controller 410 can be restricted to the second control position C2. 2) If the first protrusion 432-1 completely leaves the first recess 222-1B and enters the next recess (e.g., the first recess 222-1A or 222-1C), the elastic force of the first limiting member 430-1 will quickly restrict the switch controller 410 to the new control position.

[0078] Referring again to Figures 1 through 4, for example, the handle assembly 10 includes a drive component, which may include, for example, a firing drive component, a closing drive component, etc. The reusable core includes a drive motor (also called a motor) for providing driving force to the drive component. The front end of the reusable core 20 has a self-rotating power output shaft 210, which is configured such that when the reusable core 20 is in the open state, the power output shaft 210 rotates about axis 212 within a preset angle range until it connects with a slot (not shown) in the docking portion 130, at which point the power output shaft 210 stops rotating.

[0079] In the electric stapler shown in Figure 9, the handle A110 and the docking part A130 are detachably connected. The operator can observe the position of the slot in the docking part A130 while aligning and inserting the power output shaft located at the front end of the handle A110.

[0080] However, in the embodiments of this disclosure, the outer shell of the handle 110 and the outer shell of the docking part 130 of the handle assembly are an integral structure. The reusable core 20 needs to enter the shell through the end opening 112-1 and then connect with the slot in the docking part 130. During this process, it is difficult for the operator to observe the position of the two with the naked eye and achieve alignment, which reduces the convenience of operation and consumes a long preparation time.

[0081] In this embodiment of the present disclosure, before connecting the reusable core to the docking part, the power output shaft is set to rotate within a certain range around the axis, thereby making the insertion of the reusable core to the docking part more convenient and saving preparation time.

[0082] For example, the outer surface of the power output shaft 210 has an outer guide structure 210-1, and the inner surface of the slot has an inner guide structure that matches the shape of the outer guide structure 210-1, so that the power output shaft 210 and the slot can be connected to each other. By setting the outer guide structure and the inner guide structure, the insertion of the reusable core and the mating part becomes more precise and the connection is more stable.

[0083] For example, the switch assembly 300 is located on the end face of the reusable core 20, and a pull ring 220 is provided on the end face 20 so that the reusable core 20 can be taken out of the cavity 120 or put into the cavity 120 by pulling the pull ring 220, thereby saving preparation time before the use of the instrument.

[0084] In the above-described embodiments of this disclosure, by providing a switch control component, the cover 200 can be turned on and off to control the reusable core 20 when it is in a closed state.

[0085] In some cases, the operator forgets to open the reusable core 20 before closing the cover 200. In this situation, the switch controller 410 is in the second control position C2, and the switch 310 is in the second position P2 (i.e., the reusable core 20 is closed). To open the reusable core 20, the operator does not need to open the cover 200 but simply moves the switch controller 410 along the D2 direction towards the first control position C1. During this movement, the open slot 414 moves the switch 310 towards the first position P1. When the first protrusion 432-1 approaches and engages with the first recess 222-1 located in the first control position C1, and the second protrusion 432-2 approaches and engages with the second recess 222-2 located in the first control position C1, the switch controller 410 is precisely restrained in the first control position C1, and the switch 310 is moved to the first position P1. Thus, the reusable core 20 is powered on while the cover 200 is closed.

[0086] In other cases, after the operator completes the planned surgery using surgical instrument 1, it is necessary to shut down the reusable core 20. In this situation, the switch controller 410 is in one of the first control positions C1 and C2, and the switch 310 is in the first position P1. To shut down the reusable core 20, the operator does not need to open the cover 200 but simply moves the switch controller 410 along the D2 direction towards the third control position C3. During this movement, the open slot 414 moves the switch 310 towards the second position P2. When the first protrusion 432-1 approaches and engages with the first recess 222-1 located in the third control position C3, and the second protrusion 432-2 approaches and engages with the second recess 222-2 located in the third control position C3, the switch controller 410 is precisely restrained in the third control position C3, and the switch 310 is moved to the second position P2. Thus, the reusable core 20 is shut down while the cover 200 is closed.

[0087] In summary, in the handle assembly and surgical instrument provided in the embodiments of this disclosure, by setting a switch control assembly located on the cover, the switch controller is configured such that when the cover is in the closed position, the switch is moved between the first position and the second position by moving the switch controller, thereby realizing the on / off of the reusable core in the closed state of the cover. This not only reduces the risk of bacterial contamination during the use of the surgical instrument, but also simplifies the operation.

[0088] The following points should be noted in this article:

[0089] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0090] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0091] (3) The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure. The scope of protection of this disclosure is determined by the appended claims.

Claims

1. A handle assembly of a surgical instrument, comprising: The housing, in part, is configured as a handle having a cavity that accommodates at least a reusable core, the cavity having an end opening at the end of the handle; A cover body connected to the end portion to allow the cover body to rotate between an open position and a closed position; A switch assembly is disposed on the reusable core, the switch assembly including a switch configured to move between a first position and a second position to control the opening or closing of the reusable core; as well as A switch control assembly, located on the cover and including a switch controller, the switch controller being configured such that when the cover is in the closed position, moving the switch controller causes the switch to move between the first position and the second position.

2. The handle assembly according to claim 1, wherein, The switch controller includes a main body and an open slot located on the main body. The switch controller has three control positions, namely a first control position, a second control position, and a third control position. The second control position is located between the first control position and the third control position. The switch controller and the switch are configured such that when the switch controller is in the second control position, the switch is located in the open slot, so that when the main body moves, the open slot drives the switch to move.

3. The handle assembly according to claim 2, wherein, The switch controller is in the second control position, the switch is in the first position, and the switch controller is configured to move from the second control position to the third control position, such that the open slot drives the switch to move to the second position.

4. The handle assembly according to claim 2 or 3, wherein, The switch controller is in the second control position, the switch is in the second position, and the switch controller is configured to move from the second control position to the first control position, such that the open slot drives the switch to move to the first position.

5. The handle assembly according to any one of claims 2 to 4, wherein, The switch control assembly further includes a snap-fit ​​assembly. The cover has an opening, and the switch controller is fixed to the opening of the cover via the snap-fit ​​assembly and is movable within a plane defined by the intersection of a first direction and a second direction.

6. The handle assembly according to claim 5, wherein, The latching assembly includes at least one latching member disposed on the main body, the end of the latching member being configured as a hook portion, the hook portion being constructed to latch into the opening of the cover to restrict the switch controller from moving in a third direction, the third direction being perpendicular to the plane.

7. The handle assembly according to claim 6, wherein, The buckle assembly also includes a reinforcing rib, which is disposed between the side of the open slot and the buckle member, so that the buckle member is fixedly connected to the side of the open slot.

8. The handle assembly according to claim 6 or 7, wherein, The fastener includes two first fasteners, which are connected to the first side of the open slot, and one of the two first fasteners corresponds to a control position.

9. The handle assembly according to claim 8, wherein, The fastener includes two second fasteners connected to the second side of the open slot, and one of the two second fasteners corresponds to a control position.

10. The handle assembly according to any one of claims 5 to 9, wherein, The cover includes a limiting groove disposed on the side of the opening, the limiting groove including a recessed portion recessed in a direction away from the center of the opening; The switch control assembly includes at least one limiting member disposed on the main body, the limiting member being disposed on the side of the open slot and including a protrusion protruding in a direction away from the center of the opening; The protrusion and the recess are configured such that when the switch controller moves in the second direction, the protrusion is embedded in the recess to restrict the switch controller to any one of the three control positions.

11. The handle assembly according to claim 10, wherein, The limiting groove includes multiple recesses, and the multiple recesses include three first recesses. The three first recesses are arranged at intervals on the first side of the opening, and the three first recesses correspond to the three control positions respectively. The at least one limiting member includes a first limiting member disposed on a first side of the open slot. The first limiting member includes a first protrusion. The first protrusion is configured such that when the switch controller moves in the second direction, the first protrusion is embedded in one of the three first recesses to limit the switch controller to a control position corresponding to the first recess.

12. The handle assembly according to claim 11, wherein, The plurality of recesses also include three second recesses, which are spaced apart from each other on the second side of the opening opposite to the first side. The three second recesses correspond to three control positions respectively. The at least one limiting member further includes a second limiting member disposed on the second side of the open slot. The second limiting member includes a second protrusion, which is configured such that when the switch controller moves in the second direction, the second protrusion is embedded in one of the three second recesses to limit the switch controller to a control position corresponding to the second recess.

13. The handle assembly according to any one of claims 10 to 12, wherein, The protrusion of the limiting member has two guide surfaces on the side facing the recess. The guide surfaces are configured to guide the protrusion of the limiting member into the recess along the third direction when the switch controller is installed in the opening of the cover.

14. The handle assembly according to any one of claims 10 to 13, wherein, The limiting member is elastic, and when the switch controller moves along the second direction, the limiting member is configured to rebound along the first direction toward the center away from the opening, so that the protrusion leaves the recess where it is located and enters the next recess.

15. The handle assembly according to any one of claims 2 to 14, wherein, The planar shape of the open slot is an elliptical ring.

16. A surgical instrument comprising the handle assembly as described in any one of claims 1 to 15.

17. The surgical instrument of claim 16 further includes a shaft assembly connected to the handle assembly, and another portion of the housing is configured as a mating portion that engages with the shaft assembly, such that the handle and the mating portion are integral structures.

18. The surgical instrument according to claim 17, wherein, The reusable core has a self-rotating power output shaft at its front end. The power output shaft is configured such that when the reusable core is in the open state, the power output shaft rotates around the axis within a preset angle range until the power output shaft is connected to the slot in the docking part, at which point the power output shaft stops rotating.

19. The surgical instrument according to claim 18, wherein, The outer surface of the power output shaft has an outer guide structure, and the inner surface of the slot has an inner guide structure that matches the shape of the outer guide structure, so that the power output shaft and the slot can be connected to each other.

20. The surgical instrument according to any one of claims 16 to 19, wherein, The switch assembly is located on the end face of the reusable core, and a pull ring is provided on the end face to remove the reusable core from the cavity or to put the reusable core into the cavity via the pull ring.

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