Surgical instrument and shielding sleeve

Abstract

The invention discloses a surgical instrument and a shielding sleeve, and belongs to the field of medical instruments. The surgical instrument includes a handle assembly operable to provide a driving force to an end effector assembly; the slender body assembly is used for limiting a longitudinal axis, is detachably connected to the far end of the handle assembly and transmits the driving force of the handle assembly to the end execution assembly; the shielding sleeve is configured to be detachably arranged on the outer side of the handle assembly in a sleeving mode and comprises a shielding main body and a shielding cover body, the shielding main body is provided with a containing cavity with an opening facing the first direction, and the first direction intersects with the longitudinal axis; the shielding cover body can open or close the opening of the shielding main body. According to the surgical instrument, the handle assembly part can be repeatedly used, and cleaning, disinfection and sterilization are not needed before the surgical instrument is used.

Description

Technical Field

[0001] The present invention relates to the field of surgical instruments, and particularly to a clamping, cutting and anastomosing surgical instrument. Background Art

[0002] Linear clamping, cutting and anastomosing surgical instruments can perform clamping, suturing / anastomosing, and cutting operations on tissues during surgical procedures. With the development of medical device technology, electric surgical anastomosis instruments are evolving towards intelligent directions such as precise control, data feedback, force feedback, platformization, and digitization, resulting in a several-fold increase in the cost of the instruments. In recent years, in order to reduce the cost of using surgical instruments, surgical instruments with at least some reusable structures have received increasing attention.

[0003] Currently, electric surgical anastomosis instruments can be divided into three types: single-use, partially reusable, and fully or nearly fully reusable. For partially reusable electric surgical anastomosis instruments, the reusable part is usually the handle assembly part with a relatively high-cost power unit. Among existing reusable surgical instruments, the reusable handle part can be recycled multiple times, but before each use, the reusable part must be cleaned and disinfected, which is complex in operation, has high requirements for the components of the instrument, and has a high usage cost. Summary of the Invention

[0004] Therefore, the present invention provides a reusable surgical instrument, some of whose components can be reused multiple times, but do not require cleaning, disinfection, or sterilization before use.

[0005] In view of the above technical problems, the present invention provides the following technical solutions:

[0006] A surgical instrument, comprising: a handle assembly configured to operably provide a driving force to an end effector assembly; an elongate body assembly defining a longitudinal axis and detachably connected to the distal end of the handle assembly and transmitting the driving force of the handle assembly to the end effector assembly; further comprising: a shield sleeve configured to be removably sleeved outside the handle assembly, which includes: a shield body and a shield cover body, the shield body having a receiving cavity opening in a first direction, the first direction intersecting the longitudinal axis; the shield cover body being capable of opening or closing the opening of the shield body.

[0007] In some embodiments of the present invention, the handle assembly includes a handle housing, the handle housing including a handle main body portion and a handle grip portion, wherein the handle main body portion extends along the longitudinal axis direction, and the handle grip portion is disposed intersecting the extending direction of the handle main body portion; the shield body includes a grip sleeve portion cooperating with the handle grip portion and a main body sleeve portion cooperating with a region of the handle main body portion close to the handle grip portion.

[0008] In some embodiments of the present invention, an opening is provided in a region of the main body sleeve portion away from the grip sleeve portion, and the handle assembly is inserted into the shielding main body along the opening.

[0009] In some embodiments of the present invention, the main body sleeve portion includes a first side wall and a second side wall disposed opposite to each other, and a third side wall adjacent to the first side wall and the second side wall and cooperating with the near side surface of the handle housing.

[0010] In some embodiments of the present invention, the shielding cover body includes a bendable sheet, a part of the region of the bendable sheet is detachably connected to the first side wall of the main body sleeve portion, a part of the region of the bendable sheet is detachably connected to the second side wall of the main body sleeve portion, and a part of the region of the bendable sheet is detachably connected to the third side wall of the main body sleeve portion.

[0011] In some embodiments of the present invention, a first bonding portion is provided on the outer sides of the first side wall, the second side wall and the third side wall of the main body sleeve portion, a second bonding portion is correspondingly provided on the bendable sheet, and the first bonding portion and the second bonding portion are detachably bonded.

[0012] In some embodiments of the present invention, the shielding cover body includes an extension piece that is bendable and pivotally connected to the first side wall of the main body sleeve portion. The extension piece is bent to cover the opening and the free end of the extension piece abuts against the second side wall and the third side wall to close the shielding main body.

[0013] In some embodiments of the present invention, a first bonding portion is provided on the outer surfaces of the second side wall and the third side wall of the main body sleeve portion, a second bonding portion is correspondingly provided at the free end of the extension piece, and the first bonding portion and the second bonding portion are detachably bonded.

[0014] In some embodiments of the present invention, the shielding main body is formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material; the extension piece is made of a flexible material.

[0015] In some embodiments of the present invention, the shielding cover body includes an arc-shaped cover body pivotally connected to the first side wall of the main body sleeve portion. When the arc-shaped cover body is pivoted to the position of closing the shielding main body, the non-pivoting side wall of the arc-shaped cover body abuts against the second side wall and the third side wall.

[0016] In some embodiments of the present invention, a first bonding portion is provided on the outer surface of the second side wall of the main body sleeve portion, a second bonding portion is correspondingly provided on the non-pivoting side wall of the arc-shaped cover body, and the first bonding portion and the second bonding portion are detachably bonded.

[0017] In some embodiments of the present invention, the shielding main body and the arc-shaped cover body are formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material.

[0018] The present invention also provides a shielding sleeve adapted to the handle assembly of a surgical instrument, including: a shielding main body and a shielding cover body, the shielding main body having a receiving cavity opening in a first direction, the first direction intersecting the longitudinal axis of the surgical instrument; the shielding cover body being capable of opening or closing the opening of the shielding main body.

[0019] In some embodiments of the present invention, the shielding main body includes a gripping sleeve portion and a main body sleeve portion, the gripping sleeve portion extending in the first direction, the main body sleeve portion extending in the direction of the longitudinal axis, and the side of the main body sleeve portion away from the gripping sleeve portion having the opening.

[0020] In some embodiments of the present invention, the main body sleeve portion includes a first side wall and a second side wall disposed opposite to each other, and a third side wall adjacent to the first side wall and the second side wall and cooperating with the near side surface of the handle housing.

[0021] In some embodiments of the present invention, the shielding cover body includes a bendable sheet, a part of the area of the bendable sheet being detachably connected to the first side wall of the main body sleeve portion, a part of the area of the bendable sheet being detachably connected to the second side wall of the main body sleeve portion, and a part of the area of the bendable sheet being detachably connected to the third side wall of the main body sleeve portion.

[0022] In some embodiments of the present invention, the shielding cover body includes an extension sheet that is bendable and pivotally connected to the first side wall of the main body sleeve portion, the extension sheet being bent to cover the opening and the free end of the extension sheet abutting against the second side wall and the third side wall to close the shielding main body.

[0023] In some embodiments of the present invention, the shielding main body is formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material; the extension sheet is made of a flexible material.

[0024] In some embodiments of the present invention, the shielding cover body includes an arc-shaped cover body pivotally connected to the first side wall of the main body sleeve portion, and when the arc-shaped cover body pivots to a position closing the shielding main body, the non-pivoting side wall of the arc-shaped cover body abuts against the second side wall and the third side wall.

[0025] The technical solution of the present invention has the following technical effects compared with the prior art:

[0026] In the surgical instrument provided by the present invention, a shielding sleeve is sleeved outside the handle assembly. Before use, the shielding sleeve is placed in a sterile packaging bag. Before each operation, the elongate body assembly with an end effector assembly connected to the distal end is installed at the distal end of the handle assembly, which can enable partial reuse of the handle assembly and keep the surgical instrument in a sterile state during the operation. The shielding sleeve is configured to include a shielding main body and a shielding cover body. The shielding main body has a receiving cavity opening in a first direction. Before the operation, the handle assembly is placed into the receiving cavity of the shielding main body along the first direction, and then the contact between the handle assembly and the outside is shielded by the shielding cover body. The whole operation is convenient and fast, facilitating the operator to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the drawings, which will help to understand the objectives and advantages of the present invention, wherein:

[0028] Figure 1 is a schematic structural view of a specific embodiment of the surgical instrument of the present invention;

[0029] Figure 2 is another schematic structural view of a specific embodiment of the surgical instrument of the present invention;

[0030] Figure 3 is an exploded view of the handle assembly in a specific embodiment of the surgical instrument of the present invention;

[0031] Figure 4 is a schematic connection view of the handle assembly and the elongate body assembly in an embodiment of the present invention;

[0032] Figure 5 is a schematic structural view of the drive assembly in an embodiment of the surgical instrument of the present invention;

[0033] Figure 6 is another schematic structural view of the drive assembly in an embodiment of the surgical instrument of the present invention;

[0034] Figure 7 is a schematic structural view of the first embodiment of the shielding sleeve in the surgical instrument of the present invention;

[0035] Figure 8 is a schematic structural view of the second embodiment of the shielding sleeve in the surgical instrument of the present invention;

[0036] Figure 9 is a schematic structural view of the third embodiment of the shielding sleeve in the surgical instrument of the present invention;

[0037] Figure 10 is another schematic structural view of the third embodiment of the shielding sleeve in the surgical instrument of the present invention;

[0038] Figure 11 Another structural schematic diagram of the third embodiment of the shielding sleeve in the surgical instrument of the present invention. Detailed implementation manners

[0039] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] In each embodiment of the present invention, "distal end / side" refers to the end of the surgical instrument that is far from the operator during operation, and "proximal end / side" refers to the end / side of the surgical instrument that is close to the operator during operation.

[0044] The following is a specific implementation manner of the surgical instrument. Generally speaking, the embodiments of the surgical instrument described herein are endoscopic surgical cutting and anastomosis instruments. However, it should be noted that the surgical instrument can also be a non-endoscopic surgical cutting and anastomosis instrument, such as an open surgical instrument for open surgery.

[0045] Specifically, Figures 1-3The shown surgical instrument 1 includes a handle assembly 10, a slender body assembly 20, and an end effector assembly 30 that are sequentially connected from proximal to distal. Among them, the end effector assembly 30 is used to operate tissues to perform specific surgical operations, for example, surgical operations such as clamping, suturing / anastomosing, and cutting tissues; the handle assembly includes a driving assembly for driving the end effector assembly 30 to perform actions such as clamping, suturing / anastomosing, and cutting; the slender body assembly 20 is used to transmit the driving force of the handle assembly 10 to the end effector assembly 30. Among them, the slender body assembly 20 and the end effector assembly 30 are both disposable components, while the handle assembly 10 is a reusable component.

[0046] To avoid incomplete disinfection of the reusable handle assembly 10, the surgical instrument 1 further includes a shielding sleeve 40 detachably covering the outside of the handle assembly 10. The shielding sleeve 40 is accommodated in a sterile packaging bag before use. Before each surgery, the slender body assembly 20 with the end effector assembly 30 connected to its distal end is installed at the distal end of the handle assembly 10, and then the shielding sleeve 40 is covered on the outside of the handle assembly 10, where the shielding sleeve 40 is seamlessly connected to the rotary head assembly 23 located at the proximal end of the slender body assembly 20 to keep the entire outer surface of the surgical instrument 200 in a sterile state suitable for surgery.

[0047] The end effector assembly 30 includes a cartridge assembly 31 and an anvil assembly 32. The cartridge assembly 31 and the anvil assembly 32 can move relative to each other to close the jaws to clamp tissue jaws. In a specific embodiment, the anvil assembly 32 of the end effector assembly 30 can be operably pivoted towards the cartridge assembly 31 until the jaws of the end effector assembly 30 are closed to clamp tissue; the anvil assembly 32 pivots in a direction away from the cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release tissue. As an alternative embodiment, the cartridge assembly 31 of the end effector assembly 30 can be operably pivoted towards the pivoting anvil assembly 32 until the jaws of the end effector assembly 30 are closed to clamp tissue; and the cartridge assembly 31 is operably pivoted in a direction away from the cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release tissue. Further, a movable firing member for performing surgical actions is provided inside the end effector assembly 30, and the firing member can be operably reciprocated. For example, when the firing member is driven to move from proximal to distal, corresponding surgical operations are performed, such as cutting and anastomosing tissues.

[0048] The slender body assembly 20 is generally slender and tubular, including a tubular outer shell that defines a longitudinal axis C; a transmission rod is provided inside the tubular outer shell for transmitting the driving force of the handle assembly 10 to the end effector assembly 30. The proximal side of the slender body assembly 20 engages with the rotary head assembly 23, which can drive the slender body assembly 20 to rotate relative to the handle assembly 10 around the longitudinal axis C.

[0049] As Figure 4 shown, at least a portion of the handle assembly 10 is held by an operator to enable the operator to manipulate the surgical instrument. For example, the handle assembly 10 includes a handle housing 11 that can be held by a user. The handle housing 11 includes a first half housing 11A and a second half housing 11B, and the first half housing 11A and the second half housing 11B can be detachably connected by means such as snap connection, fastener connection, etc. The handle housing 11 is generally in a T shape as a whole, and includes a main body portion 111 extending along the longitudinal axis direction C and a grip portion 112 extending in a direction substantially perpendicular to the longitudinal axis C or at an angle with respect to the longitudinal axis C. An installation space for the drive assembly is formed inside the handle housing 11. In a specific embodiment, as Figure 4 shown, an operation portion 113 is provided on the handle housing 11 of the handle assembly 10, and a push button and / or button structure is provided on the operation portion 113. The user performs a closing and / or firing action by manipulating the push button or button on the operation portion 113. Or.

[0050] As Figures 4-6 shown, a drive assembly 12 for providing driving force to the elongate body assembly 20 and the end effector assembly 30 is provided inside the handle housing 11. In some specific embodiments, the drive assembly 12 includes a firing drive assembly 120 and a bending drive assembly 150. Correspondingly, the transmission rods in the elongate body assembly 20 include a firing transmission rod 21 and a bending transmission rod 22 (as Figure 3 shown). Among them, the output end of the firing drive assembly 120 drives the firing transmission rod 21 of the elongate body assembly 20, and further drives the firing member of the end effector assembly 30 to perform a reciprocating motion, so as to realize the operations of closing and opening the jaws of the end effector assembly 30, and cutting and anastomosing the tissue clamped in the jaws. The output end of the bending drive assembly 150 drives the bending transmission rod 22 of the elongate body assembly 20, and further drives the bending member of the end effector assembly 30 to perform a reciprocating motion, so as to realize the bending operation of the end effector assembly 30 relative to the elongate body assembly 20.

[0051] The rotating head assembly 23 is detachably connected to the handle assembly 10, so that the handle assembly 10 with the drive assembly 12, especially the power unit, can be reused, while the elongate body assembly 20 and the end effector assembly 30 are used as disposable parts. The proximal ends of the firing transmission rod 21 and the bending transmission rod 22 extend outside the rotating head assembly 23. When the adapter instrument 1 is engaged with the handle assembly 10, the proximal ends of the firing transmission rod 21 and the bending transmission rod 22 extend into the inside of the handle housing 11 and are respectively connected to the output ends of the firing drive assembly 120 (for example, the firing sliding nut 125) and the bending drive assembly 150 (for example, the bending sliding nut 155). The distal ends of the firing transmission rod 21 and the bending transmission rod 22 are respectively connected to the firing member and the bending member inside the end effector assembly 30.

[0052] As Figure 4 shown, the handle assembly 10 further includes at least one power source 60 that powers at least one motor. The power source can be a battery or a plug-in power source. In another embodiment, the power source can be detached from or inserted into the power handle. The handle assembly 10 further includes a control device 61 for controlling the operation of the instrument, which includes a main control circuit board 62, a power control circuit board 63, and a button control circuit board 64.

[0053] As Figures 7-9 shown, in order to prevent the reusable part of the handle assembly 10 from contaminating the environment in the operating room, or the components or the operator in contact therewith, due to incomplete disinfection or no disinfection, the surgical instrument 1 further includes a shielding sleeve 40 detachably covering the outside of the handle assembly 10. The shielding sleeve 40 includes a shielding main body 41 and a shielding cover body 42. The shielding main body 41 has a receiving cavity opening in a first direction (the direction of arrow a Figures 7-9 ), and the first direction intersects with the longitudinal axis direction; the shielding cover body 42 can open or close the opening of the shielding main body 41. Before the operation, the handle assembly 10 is placed into the receiving cavity of the shielding main body 41 along the first direction, and then the contact between the handle assembly 10 and the outside is shielded by the shielding cover body 42. The distal end of the shielding sleeve 40 abuts against the proximal side surface of the rotating head assembly 23, so that the whole handle assembly 10 is located inside the shielding sleeve 40, making the surgical instrument 1 form a sterile outer surface.

[0054] Specifically, the shielding body 41 includes an integrally formed holding sleeve portion 411 and a main body sleeve portion 412. Among them, the holding sleeve portion 411 cooperates with the handle holding portion 112, and the main body sleeve portion 412 cooperates with the area of the main body portion 111 close to the handle holding portion 112. That is, the main body sleeve portion 412 is configured as a sleeve structure with a semi-circular cross-section. An opening is provided in the area of the main body sleeve portion 412 away from the holding sleeve portion 411 (i.e., the upper side of the semi-circular sleeve body), so that the holding portion 112 and the main body portion 111 of the handle assembly 10 are sequentially placed into the shielding body 41 through the opening. In other alternative embodiments, the holding sleeve portion 411 and the main body sleeve portion 412 can also be connected and fixed by, for example, snap connection or adhesive connection according to their manufacturing materials.

[0055] The main body sleeve portion 412 includes a first side wall 412a and a second side wall 412b arranged oppositely, and a third side wall 412c adjacent to the first side wall 412a and the second side wall 412b; the first side wall 412a and the second side wall 412b respectively cooperate with the opposite side surfaces of the main body portion 111 of the handle housing 11, and the third side wall 412c cooperates with the near side surface of the main body portion 111 of the handle housing 11. The first side wall 412a and the second side wall 412b are bent and extended in the direction approaching the holding sleeve portion 411 until they are joined to form the semi-circular sleeve structure of the main body sleeve portion 412.

[0056] To facilitate the installation of the handle assembly 10 into the shielding sleeve 40, the holding sleeve portion 411 of the shielding sleeve 40 needs to have a certain rigidity to maintain the shape of the cavity. At the same time, the holding sleeve portion 411 needs to be convenient for doctors to hold, and it also needs to have a certain elasticity. For this reason, in a specific embodiment, as Figure 11 shown, the main body sleeve portion 412 of the shielding sleeve 40 is formed by secondary injection molding of a support skeleton 412d made of a rigid material (such as a plastic material with a higher hardness) and a main body outer surface 412f made of a flexible material (such as silicone, TPE, TPU, etc.). The support skeleton 412d is suitable for forming the outer shape structure of the main body sleeve portion 412, and the main body outer surface 412f is connected between the support skeletons 412d to form the outer contour surface of the main body sleeve portion 412.

[0057] The structure and molding method of the shielding cover body 42 are not unique. For example, Figure 7The first embodiment of the shielding cover 42 is shown. In this embodiment, the shielding cover 42 is a bendable sheet 421 made of a flexible material (such as silicone, TPE, TPU, etc.). The bendable sheet 421 made of the above flexible material can change with the shape of the covered structure. The bendable sheet 421 in this embodiment is independent of the main body sleeve portion 412. A part of the bendable sheet 421 is detachably connected to the first side wall 412a of the main body sleeve portion 412, a part of the bendable sheet 421 is detachably connected to the second side wall 412b of the main body sleeve portion 412, and a part of the bendable sheet 421 is detachably connected to the third side wall 412c of the main body sleeve portion 412.

[0058] When the above surgical instrument 1 is aseptically installed before the operation, the handle assembly 10 part is placed into the main body sleeve portion 412 along the opening, and then the shielding cover 42a independent of the main body sleeve portion 412 is respectively connected to the outer ends of the first side wall 412a, the second side wall 412b, and the third side wall 412c of the main body sleeve portion 412 to isolate the handle assembly 10 from the outside.

[0059] Specifically, a first bonding portion is provided on the outer sides of the first side wall 412a, the second side wall 412b, and the third side wall 412c of the main body sleeve portion 412. The bendable sheet 421 is correspondingly provided with a second bonding portion, and the first bonding portion and the second bonding portion are detachably bonded. Among them, the bonding method of the first bonding portion and the second bonding portion is not unique. It can adopt the magnetic bonding method, that is, one of the first bonding portion and the second bonding portion is a permanent magnet, and the other is a permanent magnet or a magnetic body with the opposite magnetism to achieve magnetic bonding. It can also be achieved by using the Velcro bonding method, that is, one of the first bonding portion and the second bonding portion is fine and soft fibers, that is, loop, and the other of the first bonding portion and the second bonding portion is a harder hook-shaped barb.

[0060] As Figure 8 The second specific embodiment of the shielding cover 42 is shown. The shielding cover 42 includes a bendable extension piece 422 made of a flexible material (such as silicone, TPE, TPU, etc.). The extension piece 422 is pivotally connected to the first side wall 412a. The extension piece 422 is bent to cover the opening and the free end of the extension piece 422 abuts against the second side wall 412b to close the shielding main body 41. Among them, the extension piece 422 and the main body sleeve portion 412 are integrally injection molded, and the pivot connection part between the two is formed into a depression or groove with a thickness smaller than other regions (the main body region of the extension piece 422 and the main body region of the main body sleeve portion 412) and extending along the longitudinal axis direction.

[0061] A first bonding portion is provided on the outer surface of the second side wall 412b of the main body sleeve portion 412, and a second bonding portion is correspondingly provided at the free end of the extension piece 422. The first bonding portion and the second bonding portion are detachably bonded. Among them, the bonding method of the first bonding portion and the second bonding portion is not unique, and it can adopt a magnetic bonding method or a Velcro bonding method to achieve, which will not be elaborated here.

[0062] As Figures 9-11 Another specific embodiment of the shielding cover 42 is shown. The shielding cover 42 includes an arc-shaped cover body 423 pivotally connected to the first side wall 412a. Among them, the arc-shaped cover body 423 is formed by secondary injection molding of a support skeleton 2212a made of a rigid material (such as a plastic material with a higher hardness) and a main body outer surface 2212b made of a flexible material (such as silicone, TPE, TPU, etc.); that is, the arc-shaped cover body 423 is formed with a certain rigidity to be able to maintain the shape of its accommodating cavity. When the arc-shaped cover body 423 pivots to the position of closing the shielding main body 41, the non-pivoting side wall of the arc-shaped cover body 423 abuts against the second side wall 412b and the third side wall 412c of the main body sleeve portion 412.

[0063] As Figure 11 As shown, a first bonding portion 412g is provided on the outer surfaces of the second side wall 412b and the third side wall 412c of the main body sleeve portion 412, and a second bonding portion 423a is correspondingly provided on the non-pivoting side wall of the arc-shaped cover body 423. The first bonding portion 412g and the second bonding portion 423a are detachably bonded. Among them, the first bonding portion 412g and the second bonding portion 423a can adopt a magnetic bonding method or a Velcro bonding method to achieve, which will not be elaborated here.

[0064] The holding sleeve portion 411 of the shielding sleeve 40 is provided with a protruding pressing sleeve portion 413 at a position corresponding to the operation portion 113. The pressing sleeve portion 413 is made of a flexible material, which is convenient for the operator to trigger.

[0065] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A surgical instrument, comprising: a handle assembly that operably provides a driving force to an end effector assembly; an elongate body assembly that defines a longitudinal axis, is detachably connected to the distal end of the handle assembly, and transmits the driving force of the handle assembly to the end effector assembly; characterized in that it further comprises: a shielding sleeve configured to be removably sleeved outside the handle assembly, which includes a shielding main body and a shielding cover body. The shielding main body has a receiving cavity opening in a first direction, and the first direction intersects with the longitudinal axis; the shielding cover body can open or close the opening of the shielding main body.

2. The surgical instrument according to claim 1, characterized in that: the handle assembly includes a handle housing, and the handle housing includes a handle main body portion and a handle grip portion. The handle main body portion extends along the longitudinal axis direction, and the handle grip portion is arranged intersecting with the extending direction of the handle main body portion; the shielding main body includes a grip sleeve portion that cooperates with the handle grip portion and a main body sleeve portion that cooperates with an area on the side of the handle main body portion close to the handle grip portion.

3. The surgical instrument according to claim 2, characterized in that: an opening is provided in an area of the main body sleeve portion away from the grip sleeve portion, and the handle assembly is placed into the shielding main body along the opening.

4. The surgical instrument according to claim 2, characterized in that: the main body sleeve portion includes a first side wall and a second side wall arranged oppositely, and a third side wall adjacent between the first side wall and the second side wall and cooperating with the near side surface of the handle housing.

5. The surgical instrument according to claim 4, characterized in that: the shielding cover body includes a bendable sheet, a part of the area of the bendable sheet is detachably connected to the first side wall of the main body sleeve portion, a part of the area of the bendable sheet is detachably connected to the second side wall of the main body sleeve portion, and a part of the area of the bendable sheet is detachably connected to the third side wall of the main body sleeve portion.

6. The surgical instrument according to claim 5, characterized in that: a first bonding portion is provided on the outer sides of the first side wall, the second side wall and the third side wall of the main body sleeve portion, and a second bonding portion is correspondingly provided on the bendable sheet, and the first bonding portion and the second bonding portion are detachably bonded.

7. The surgical instrument according to claim 4, characterized in that: the shielding cover body includes an extension piece that is bendable and pivotally connected to the first side wall of the main body sleeve portion. The extension piece is bent to cover the opening and the free end of the extension piece abuts against the second side wall and the third side wall to close the shielding main body.

8. The surgical instrument according to claim 7, characterized in that: a first bonding portion is provided on the outer surfaces of the second side wall and the third side wall of the main body sleeve portion, and a second bonding portion is correspondingly provided at the free end of the extension piece, and the first bonding portion and the second bonding portion are detachably bonded.

9. The surgical instrument according to claim 5 or 7, characterized in that: the shielding main body is formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material; the extension piece is made of a flexible material.

10. The surgical instrument according to claim 4, wherein: the shielding cover includes an arc-shaped cover pivotally connected to the first side wall of the main body sleeve portion. When the arc-shaped cover pivots to a position closing the shielding main body, the non-pivoting side wall of the arc-shaped cover abuts against the second side wall and the third side wall.

11. The surgical instrument according to claim 10, wherein: a first bonding portion is provided on the outer surface of the second side wall of the main body sleeve portion, and a second bonding portion is correspondingly provided on the non-pivoting side wall of the arc-shaped cover. The first bonding portion and the second bonding portion are detachably bonded.

12. The surgical instrument according to claim 10, wherein: the shielding main body and the arc-shaped cover are formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material.

13. A shielding sleeve adapted to the handle assembly of a surgical instrument, wherein, it includes: a shielding main body and a shielding cover. The shielding main body has a receiving cavity opening in a first direction, and the first direction intersects the longitudinal axis of the surgical instrument; the shielding cover can open or close the opening of the shielding main body.

14. The shielding sleeve according to claim 13, wherein, the shielding main body includes a gripping sleeve portion and a main body sleeve portion. The gripping sleeve portion extends in the first direction, and the main body sleeve portion extends in the longitudinal axis direction. The side of the main body sleeve portion away from the gripping sleeve portion has the opening.

15. The shielding sleeve according to claim 14, wherein, the main body sleeve portion includes a first side wall and a second side wall arranged opposite to each other, and a third side wall adjacent to the first side wall and the second side wall and cooperating with the near side surface of the handle housing.

16. The shielding sleeve according to claim 15, wherein, the shielding cover includes a bendable sheet. A part of the bendable sheet is detachably connected to the first side wall of the main body sleeve portion, a part of the bendable sheet is detachably connected to the second side wall of the main body sleeve portion, and a part of the bendable sheet is detachably connected to the third side wall of the main body sleeve portion.

17. The shielding sleeve according to claim 15, wherein, the shielding cover includes an extension sheet bendably and pivotally connected to the first side wall of the main body sleeve portion. When the extension sheet body bends to cover the opening and the free end of the extension sheet abuts against the second side wall and the third side wall, the shielding main body is closed.

18. The shielding sleeve according to claim 17, wherein, the shielding main body is formed by secondary injection molding of a support skeleton made of a rigid material and a main body outer surface made of a flexible material; the extension sheet is made of a flexible material.

19. The shielding sleeve according to claim 15, wherein, the shielding cover includes an arc-shaped cover pivotally connected to the first side wall of the main body sleeve portion. When the arc-shaped cover pivots to a position closing the shielding main body, the non-pivoting side wall of the arc-shaped cover abuts against the second side wall and the third side wall.

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