Adapter and surgical instrument

Abstract

The invention discloses an adapter and a surgical instrument. The adapter comprises a slender body assembly, a firing transmission rod and an isolation sleeve. An elongate body assembly having a proximal end and a distal end, the proximal end configured to be adapted to connect with the handle and to be in operative communication with the firing drive rod; a distal end thereof is configured to be adapted to connect with an end effector assembly and to be in operative communication with a firing member of the end effector assembly. A firing transfer bar is configured for interconnecting the firing drive bar and the firing member, the firing transfer bar transmitting movement of the firing drive bar of the handle along the longitudinal axis to the firing member of the end effector assembly to translate the firing member in the axial direction. The isolation sleeve is arranged outside the firing transmission rod in a sleeving manner, the near end of the isolation sleeve is connected with the firing transmission rod and moves together with the firing transmission rod, the far end of the isolation sleeve is connected with the inner core of the slender body assembly, and the isolation sleeve divides a space formed by the firing transmission rod and the inner core into a near-end space and a far-end space which are not communicated with each other; contaminant transfer between a firing driving rod of the handle and a firing component of the end execution assembly is blocked. According to the adapter and the surgical instrument provided by the invention, bacteria on the percussion connecting rod are prevented from polluting a far-end execution part, and the use safety of a user is improved.

Description

Technical Field

[0001] The present invention relates to surgical instruments, and in particular to an adapter and a surgical instrument. Background Art

[0002] Linear clamping, cutting, and stapling electric surgical instruments can clamp, suturing / staple, and cut tissues during surgical operations. Currently, staplers can be divided into single-use staplers, partially reusable staplers, and fully or nearly fully reusable staplers based on their use. Disposable staplers have advantages in terms of safety and portability; fully or nearly fully reusable staplers have advantages in terms of intelligence and cost per operation, but require partial or complete sterilization of the instruments; and partially reusable staplers combine the cost and safety advantages of both single-use staplers and fully or nearly fully reusable staplers, and are receiving increasing attention from the medical device industry.

[0003] Currently, the handles in some reusable staplers can be reused without disinfection and sterilization, while the adapters can be reused after disinfection and sterilization. When the adapter and handle are assembled and actuated, the adapter outputs linear motion of the firing drive rod, which involves the sterile firing drive rod in the electric handle extending into the sterile adapter. As the device fires and retracts several times, bacteria on the firing rod can be transmitted to the distal actuator through physical contact, posing a significant safety risk to the user. Summary of the Invention

[0004] The purpose of the present invention is to provide an adapter and a surgical instrument to solve the problems existing in the prior art, prevent bacteria on the firing rod from contaminating the distal execution part, and improve user safety.

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

[0006] An adapter for selectively adapting and interconnecting a handle with an end-effector assembly, wherein the end-effector assembly is configured to perform a surgical operation, the end-effector assembly includes a firing member that translates along its axial direction, the handle is configured to actuate the end-effector assembly, the handle includes a firing drive rod that moves along a longitudinal axis, the adapter comprising: an elongated body assembly having a proximal end and a distal end, the proximal end of which is configured to be suitable for connection with the handle and operatively connected to the firing drive rod; the distal end of which is configured to be suitable for connection with the end-effector assembly and operatively connected to the firing member of the end-effector assembly; a firing drive rod that is configured to Used to interconnect the firing drive rod and the firing component, the firing transmission rod transmits the movement of the firing drive rod of the handle along the longitudinal axis to the firing component of the end execution assembly, so that the firing component translates axially; an isolation sleeve is constructed to be sleeved outside the firing transmission rod, its proximal end is connected to and moves together with the firing transmission rod, and its distal end is connected to the barrel core of the slender body assembly, wherein the isolation sleeve isolates the space formed by the firing transmission rod and the barrel core into non-connected proximal space and distal space to block the transfer of contaminants between the firing drive rod of the handle and the firing component of the end execution assembly.

[0007] In some embodiments of the present invention, at least a portion of the isolation sleeve is made of a flexible material so that it can be axially retracted.

[0008] In some embodiments of the present invention, the isolation sleeve includes a flexible isolation cylinder, and the isolation cylinder is axially telescopic.

[0009] In some embodiments of the present invention, a first joint and a second joint are respectively provided at both ends of the isolation tube; the first joint is connected to the firing transmission rod, and the second joint is connected to the inner core of the barrel of the slender body assembly. When the end execution assembly is fired, the firing transmission rod compresses the isolation sleeve, and when the end execution assembly retracts, the firing transmission rod drives the isolation sleeve to extend.

[0010] In some embodiments of the present invention, a support portion with a harderness greater than that of the isolation cylinder is spirally provided axially on the isolation cylinder to guide the isolation cylinder to correspondingly retract or extend axially during the firing and retraction of the firing transmission rod.

[0011] In some embodiments of the present invention, the first joint is clamped with the firing transmission rod; a clamping seat is provided on the inner core of the barrel, and the clamping seat is embedded in the through hole opened on the side wall of the inner core of the barrel and is clamped with the second joint.

[0012] In some embodiments of the present invention, a first clamping protrusion is provided on the firing transmission rod, a first clamping groove is provided on the inner wall of the first joint, and the first clamping protrusion is clamped into the first clamping groove; a second clamping groove is provided on the clamping seat, a second clamping protrusion is provided on the second joint, and the second clamping protrusion is clamped into the second clamping groove.

[0013] In some embodiments of the present invention, a limiting step protruding from the second clamping groove is further provided on the clamping seat, and the second joint includes a fitting section, which is pressed between the limiting step and the firing transmission rod to enable the limiting step to be sealed and clamped with the second joint.

[0014] In some embodiments of the present invention, the second clamping groove is an arcuate groove, and the second clamping protrusion is an arcuate protrusion extending along the circumference of the inner core, and the arcuate protrusion is fitted in the arcuate groove along the circumference of the inner core.

[0015] Some embodiments of the present invention further include a shielding shell covering the outside of the handle, wherein the shielding shell includes a shielding body and a shielding cover. The shielding cover is pivotally connected to the shielding body and can be selectively snapped together to form a accommodating cavity for accommodating the handle.

[0016] A surgical instrument comprises a handle and any one of the above-mentioned adapters, wherein the handle and the adapter are detachably connected.

[0017] In some embodiments of the present invention, the slender body assembly includes a rotating head having an inner core of the rotating head, a guide plate is provided on the inner core of the rotating head, and the guide plate includes a first guide surface and a second guide surface arranged opposite to each other; the handle is provided with a first clamping plate and a second clamping plate arranged opposite to each other, the guide plate is clamped between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are respectively slidably clamped on the outside of the first guide surface and the second guide surface.

[0018] In some embodiments of the present invention, the handle is provided with a retractable card block and a control member for driving the card block to retract and retract, and the card block is located between the first card plate and the second card plate; a receiving groove is provided on the guide plate, and a card interface is provided on the groove wall of the receiving groove, and the card block is engaged in the card interface when it slides from the groove opening of the receiving groove to the position of the card interface.

[0019] The above technical solution has the following beneficial effects:

[0020] In the adapter and surgical instrument provided by the present application, the portion of the firing rod at the distal end of the isolation sleeve is connected to the end effector assembly via a slender body assembly, and the portion of the firing rod at the proximal end of the isolation sleeve is connected to the firing link in the reused handle, which may be contaminated. By connecting the first connector of the isolation sleeve to the inner core of the gun barrel and the second connector of the isolation sleeve to the firing rod, the portion of the firing rod at the distal end of the isolation sleeve is effectively isolated from the portion of the firing rod at the proximal end of the isolation sleeve, thereby preventing the reused handle from contaminating the parts connected to / contacting the slender body assembly detachably connected thereto due to incomplete or unsterilized disinfection. At the same time, it prevents bacteria from the tissue on which the surgical operation is performed from contaminating the parts connected to / contacting the handle and the slender body assembly through the end effector assembly and the slender body assembly, thereby improving user safety.

[0021] The technical advantages of the technical solution of the present invention are described in detail in the specific implementation method section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention.

[0023] Figure 1 This is a schematic structural diagram of a surgical instrument in one embodiment of the present application;

[0024] Figure 2 This is an exploded view of an end effector assembly in one embodiment of the present application;

[0025] Figure 3 This is an exploded view of a staple cartridge assembly in one embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of a first structure after the remote actuator, handle, and adapter are assembled in a specific embodiment of the present invention;

[0027] Figure 5 This is a second structural diagram of the assembled remote actuator, handle, and adapter in a specific embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the remote actuator and the adapter after assembly in a specific embodiment of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the connection between the remote actuator and the firing transmission rod in a specific embodiment of the present invention;

[0030] Figure 8 This is a schematic structural diagram of a surgical instrument in a specific embodiment of the present invention;

[0031] Figure 9 for Figure 8 Cross-sectional view of the middle AA;

[0032] Figure 10 A half-section view of a handle in a specific embodiment of the present invention;

[0033] Figure 11 A half-section view of a handle and an adapter in a specific embodiment of the present invention;

[0034] Figure 12 This is a structural diagram of an adapter in a specific embodiment of the present invention;

[0035] Figure 13 An exploded view of an adapter in a specific embodiment of the present invention;

[0036] Figure 14 This is a schematic structural diagram of a handle in a specific embodiment of the present invention;

[0037] Figure 15 A schematic diagram and a cross-sectional view of the structure of a firing rod in the inner core of a gun barrel before firing in a specific embodiment of the present invention;

[0038] Figure 16 A schematic diagram and a cross-sectional view of the structure of a firing rod in a gun barrel core after firing in a specific embodiment of the present invention;

[0039] Figure 17 This is a schematic structural diagram of a gun barrel inner core in a specific embodiment of the present invention;

[0040] Figure 18 This is a schematic structural diagram of an isolation sleeve in a specific embodiment of the present invention;

[0041] Figure 19 A cross-sectional view of an isolation sleeve in a specific embodiment of the present invention;

[0042] Figure 20 It is a structural schematic diagram of a clamping seat in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0043] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0044] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can replace each other with various structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the invention. The terms "center", "upper", "lower", "left", "right", "front", "back", "front", "back", "top", "bottom", "vertical", "horizontal", "inside", "outside" and other directional terms mentioned or may be mentioned in this specification are defined relative to the structures shown in the respective drawings. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] In various embodiments of the present invention, the “distal end / side” refers to the end of the surgical instrument that is away from the operator during operation, and the “proximal end / side” refers to the end / side of the surgical instrument that is close to the operator during operation.

[0048] The following is a specific embodiment of a surgical instrument. Generally speaking, the surgical instrument described herein is typically implemented as an endoscopic surgical cutting and stapling instrument. However, it should be noted that the surgical instrument can also be used in non-endoscopic surgical cutting and stapling instruments, such as open electric surgical instruments used in open surgery.

[0049] One embodiment of the surgical instrument provided by the present application is as follows Figure 1The surgical instrument shown includes a handle 10, an elongated body assembly 20, and an end effector assembly 30, connected sequentially from proximal to distal ends. The end effector assembly 30 is used to manipulate tissue to perform specific surgical operations, such as clamping, suturing / anastomosis, and cutting. The handle 10 includes a drive assembly for driving the end effector assembly 30 to perform such operations as clamping, suturing / anastomosis, and cutting. The elongated body assembly 20 is used to transmit the driving force of the handle 10 to the end effector assembly 30. The elongated body assembly 20 is a disposable adapter that selectively adapts and interconnects the handle 10 and the end effector assembly 30, while the handle 10 is a reusable assembly.

[0050] Reference Figure 1 、 Figure 2 As shown, the end effector assembly 30 includes a staple cartridge assembly 31 and an anvil assembly 32, and the staple cartridge assembly 31 and the anvil assembly 32 can move relative to each other to close the jaws and thus clamp the tissue. In a specific embodiment, the anvil assembly 32 of the end effector assembly 30 can be operably pivoted toward the staple cartridge assembly 31 until the jaws of the end effector assembly 30 are closed to clamp the tissue; the anvil assembly 32 is pivoted in a direction away from the staple cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release the tissue. As an alternative embodiment, the staple cartridge assembly 31 of the end effector assembly 30 can be operably pivoted toward the anvil assembly 32 until the jaws of the end effector assembly 30 are closed to clamp the tissue; and the staple cartridge assembly 31 is operably pivoted in a direction away from the staple cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release the tissue. Furthermore, a movable firing member 35 for performing surgical actions is provided in the end execution assembly 30. The firing member 35 can be operated to translate axially to perform reciprocating motion. For example, when the firing member 35 is driven to move from the proximal end to the distal end, the corresponding surgical operation is performed, such as cutting and stapling tissue.

[0051] The elongated body assembly 20 is generally slender and tubular, including a tubular housing defining a longitudinal axis. A transmission rod is disposed within the tubular housing for transmitting the driving force of the handle 10 to the end effector assembly 30. The proximal side of the elongated body assembly 20 engages a rotating head 23, which can drive the elongated body assembly 20 to rotate relative to the handle 10 about the longitudinal axis.

[0052] Reference Figure 2 、 Figure 3As shown, the end effector assembly 30 includes a proximal body portion 30a and a distal effector portion 30b, which are pivotally connected by a joint assembly 30c. The distal effector portion 30b includes a cartridge assembly 31 and an anvil assembly 32, which are movable relative to each other to close the jaws and thereby clamp tissue. In one embodiment, the anvil assembly 32 is operable to pivot toward the cartridge assembly 31 to close the jaws of the end effector assembly 30 to clamp tissue; and the anvil assembly 32 is operable to pivot away from the cartridge assembly 31 to open the jaws of the end effector assembly 30 to release tissue. In an alternative embodiment, the cartridge assembly 31 of the end effector assembly 30 is operable to pivot the anvil assembly 32 toward the cartridge assembly 31 to close the jaws of the end effector assembly 30 to clamp tissue; and the cartridge assembly 31 is operable to pivot away from the cartridge assembly 31 to open the jaws of the end effector assembly 30 to release tissue.

[0053] Specifically, if Figure 2 and Figure 3 As shown, the proximal main body portion 30a of the end effector assembly 30 is detachably connected to the distal end of the slender body assembly 20. The proximal main body portion 30a includes a slender outer tube 33, an inner tube 34 disposed within the outer tube 33, and a firing member 35 slidably disposed within the inner tube 34. In the distal effector portion 30b of the end effector assembly 30, the staple cartridge assembly 31 includes a staple cartridge 310, a staple cartridge base 311, and a slider 312 disposed within the staple cartridge 310 and slidable along the longitudinal axis. The proximal end of the firing member 35 is connected to the firing rod within the slender body assembly 20, while the distal end of the firing member 35 contacts the slider 312 and can slide / move integrally along the longitudinal axis to perform a corresponding surgical operation. For example, when the firing member 35 is driven to move from the proximal end to the distal end, tissue cutting and stapling operations are performed.

[0054] Of course, those skilled in the art will appreciate that other forms of end effector assemblies may be selected depending on the type of surgical procedure. Furthermore, the end effector assembly 30 may be detachably connected to the elongated body assembly 20 or may be non-detachably connected to the elongated body assembly 20.

[0055] like Figure 1As shown, the handle 10 is generally T-shaped as a whole, including a main body extending along the longitudinal axis and a gripping portion extending in a direction roughly perpendicular to the longitudinal axis or inclined at a certain angle relative to the longitudinal axis, and an installation space for the drive mechanism is formed in the handle 10. In a specific embodiment, an operating portion is provided on the handle 10, and a push-touch and / or button structure is provided on the operating portion, and the user performs the closing and / or firing action by operating the push-touch or button on the operating portion. A driving assembly for providing driving force to the slender body assembly 20 and the end execution assembly 30 is provided inside the handle 10. In some specific embodiments, such as Figures 8-11 As shown, the drive assembly includes a firing drive assembly 120, and correspondingly, the transmission system in the slender body assembly 20 includes a firing transmission rod 25, wherein the output end of the firing drive assembly 120 drives the firing transmission rod 25 of the slender body assembly 20 to move, thereby driving the firing member 35 of the end execution assembly 30 to perform reciprocating motion, thereby realizing the closing and opening operations of the jaws of the end execution assembly 30, and the cutting and stapling operations of the tissue clamped in the jaws.

[0056] The rotating head 23 of the slender body assembly 20 is detachably connected to the handle 10, so that the handle 10 with the drive assembly can be reused, while the slender body assembly 20 is used as a disposable component. The transmission system of the slender body assembly 20 includes a transmission rod engaged with the drive assembly. When the transmission rod is engaged with the drive assembly, it can be driven by the drive assembly to move linearly along the axis of the slender body assembly 20. Figure 5-Figure 7 As shown, the transmission rod includes a firing transmission rod 25, which is disposed in the rotating head 23 and connected to the firing member 35 to drive the firing member 35 to reciprocate along the axis. Figure 1 and Figure 2 shown.

[0057] Specifically, if Figure 12 As shown, the proximal end 252 of the firing transmission rod 25 of the elongated body assembly 20 extends out of the rotating head 23, as shown in FIG. Figure 14 As shown, the output end of the firing drive shaft 124 of the driving assembly in the handle 10 extends out of the handle, as shown in FIG. Figure 9 As shown, when the elongated body assembly 20 is adapted to engage with the handle 10, the output end of the firing drive shaft 124 of the drive assembly in the handle 10 is operably connected to the proximal end of the firing transmission rod 25 of the elongated body assembly 20 at the joint. Furthermore, the distal end of the firing transmission rod 25 is connected to the firing member 35 in the end effector assembly 30 to facilitate driving the firing member 35 of the end effector assembly 30.

[0058] Reference Figure 8 、 Figure 9As shown, the handle 10 is provided with a handle frame for supporting and mounting the drive assembly. Each drive assembly in the handle 10 includes a drive motor and a drive gear set, which converts the rotational motion generated by the drive motor into reciprocating linear motion along the longitudinal axis, thereby driving the transmission rod in the slender body assembly 20 to reciprocate. In this embodiment, the handle 10 includes two drive assemblies. The first drive assembly (hereinafter referred to as the firing drive assembly 120) generates the driving force for driving the surgical instrument to complete the closing, firing, and retracting and resetting operations. The second drive assembly (hereinafter referred to as the bending drive assembly) generates the driving force for driving the surgical instrument to complete the bending operation. The drive gear set includes a driving wheel and a driven wheel.

[0059] Specifically, if Figure 9 As shown, the firing drive assembly 120 includes a firing drive motor 121 and a firing drive gear set, and the firing drive motor 121 is installed on the proximal side of the handle frame, and the firing drive gear set includes a firing active wheel 122 that is transmission-connected to the output shaft of the firing drive motor 121 and a firing driven wheel 123 that is transmission-connected to the firing active wheel 122; the firing driven wheel 123 is fixedly connected to the firing drive shaft 124, and the firing drive shaft 124 is rotatably connected to the handle frame, and the firing drive shaft 124 is a screw, and a firing drive rod 125 with an internal thread is provided on the firing drive shaft 124, forming a drive transmission conversion mechanism of the screw and the internal thread, and rotating the firing drive shaft 124 can move the firing drive rod 125 along the axial direction. The firing transmission rod 25 of the slender body assembly 20 is operably connected to the firing drive rod 125 , and the firing transmission rod 25 can be controlled to move along the longitudinal axis by controlling the firing drive motor 121 .

[0060] It is understandable that in an alternative embodiment, the handle 10 may include only a set of drive components to provide the driving force for driving the surgical instrument to complete the closing, firing and retraction and reset operations, while driving the surgical instrument to complete the bending operation is achieved through a manual bending mechanism of the transmission.

[0061] like Figure 13 As shown, the elongated body assembly 20 includes a barrel 24 and a rotating head 23. The barrel 24 comprises a barrel core 27 and a sleeve 28 that is sleeved over the barrel core 27. The barrel core 27 defines a passage for the firing transmission rod 25. The rotating head 23 comprises a rotating head core 231, and a firing hole is defined on the connecting end surface of the rotating head core 231, through which the firing transmission rod 25 passes. The firing transmission rod 25 is inserted into the barrel core 27 through the firing hole. The two ends of the firing transmission rod 25 are respectively connected to the drive assembly and the end effector assembly 30 of the handle 10 to achieve power transmission.

[0062] As an optional embodiment, Figure 12 As shown, a guide plate 2311 is provided on the rotating head inner core 231 of the elongated body assembly 20, and the guide plate 2311 includes a first guide surface 2312 and a second guide surface 2313 that are oppositely arranged. Figure 14 As shown, the handle 10 is provided with a first clamping plate 100 and a second clamping plate 101 arranged opposite to each other, the guide plate 2311 is clamped between the first clamping plate 100 and the second clamping plate 101, and the first clamping plate 100 and the second clamping plate 101 are respectively slidably clamped on the outer sides of the first guide surface 2312 and the second guide surface 2313. Figure 4 and Figure 12 The handle 10 is installed from top to bottom along the H direction on the rotating head inner core 231 of the slender body component 20. During the installation process, the first guide surface 2312 and the second guide surface 2313 of the slender body component 20 respectively guide and limit the first clamping plate 100 and the second clamping plate 101.

[0063] As an optional embodiment, Figure 14 As shown, the handle 10 is provided with a retractable card block 102 and a control member 103 that drives the card block 102 to retract, and the card block 102 is located between the first card plate 100 and the second card plate 101; Figure 12 As shown, the guide plate 2311 is provided with a receiving groove 2314, and a snap-fit ​​interface 2315 is provided on the groove wall of the receiving groove 2314. When the card block 102 slides from the notch of the receiving groove 2314 to the position of the snap-fit ​​interface 2315, it is snap-fitted into the snap-fit ​​interface 2315. Figures 12 to 14 The block 102 in the embodiment of the present application is beneficial to increasing the stability of the connection between the slender body component 20 and the handle 10.

[0064] As an optional embodiment, Figure 14 As shown, the handle 10 is provided with a positioning seat 104, a positioning cavity is provided in the positioning seat 104, a spring is provided between the inner wall of the positioning cavity and the clamping block 102, a strip hole is provided on the positioning seat 104, and the control member 103 is connected to the clamping block 102 through the strip hole. The direction of the strip hole is consistent with the extension direction of the clamping block 102, so that the clamping block 102 can be driven to extend and retract through the control member 103. Figure 12 and Figure 14 As shown, in this embodiment of the present application, the lower surface of the card block 102 is an inclined surface, which serves as a guide when the card block 102 moves downward from the notch of the receiving groove 2314 and is engaged with the engaging interface 2315. The upper surface of the card block 102 is a flat surface, which stabilizes the card block 102 after it is engaged with the engaging interface 2315 and prevents the card block 102 from falling out of the engaging interface 2315.

[0065] like Figure 13 As shown, in order to prevent the reused handle 10 from contaminating the parts connected / contacting the slender body assembly 20 detachably connected thereto due to incomplete or non-sterilization, and at the same time, to prevent bacteria from the tissue on which the surgical operation is performed from contaminating the parts connected / contacting the handle 10 and the slender body assembly 20 through the end execution assembly 30 and the slender body assembly 20, the slender body assembly 20 further includes an isolation sleeve 70 mounted on the firing transmission rod 25.

[0066] like Figure 15 As shown, the proximal end of the isolation sleeve 70 is connected to the firing transmission rod 25 and reciprocates together with the firing transmission rod 25, and the distal end of the isolation sleeve 70 is connected to the barrel core 27 to isolate the space formed by the firing transmission rod 25, the rotating head core and the barrel core 27 into two spaces, one of which is a first space connected to the handle 10, and the other is a second space of the slender body assembly 20. The first space and the second space are not connected to each other to block the transfer of contaminants between the two spaces.

[0067] like Figures 18 and 19 As shown, the isolation sleeve 70 includes a flexible isolation sleeve 71, which is axially retractable. A first connector 710 and a second connector 712 are provided at each end of the isolation sleeve 71. The isolation sleeve 70 in this application is sleeve-shaped and can be made of a flexible material such as plastic, rubber, or silicone. In an alternative embodiment, the isolation sleeve 70 is made of a flexible, bacteria-repellent material.

[0068] Specifically, the firing transmission rod 25 is located in the second space portion and is detachably connected to the end effector assembly 30 through the barrel 24, and the firing transmission rod 25 is located in the first space portion and is detachably connected to the firing drive rod 125 in the handle 10. Figure 15 、 Figure 18 and Figure 19As shown, the isolation sleeve 70 includes a first joint 710 connected to the barrel core 27 and a second joint 712 connected to the firing transmission rod 25, so as to effectively isolate the portion of the firing transmission rod 25 located at the distal end of the isolation sleeve 70 (i.e., the second space) from the portion of the firing transmission rod 25 located at the proximal end of the isolation sleeve 70 (i.e., the first space), thereby preventing the portion of the firing transmission rod 25 connected to the reused handle 10 from contaminating the firing transmission rod 25 and then contaminating the end execution assembly 30, cutting off the path for bacteria to spread to the end execution assembly 30 through the firing transmission rod 25, and improving user safety; at the same time, it also avoids contamination of the reused handle 10. When the firing transmission rod 25 moves back and forth, it drives the first joint 710 of the isolation sleeve 70 to move back and forth, so that the isolation tube 71 can be extended and retracted. Specifically, when the firing transmission rod 25 is in the initial state, the isolation sleeve 70 is in an extended state, referring to Figure 15 When the firing transmission rod 25 performs the firing transmission, the first connector 710 compresses the isolation sleeve 70 until the firing is completed, referring to Figure 16 When the firing transmission rod 25 performs the retraction transmission, the first joint 710 drives the isolation sleeve 70 to extend until it returns to its initial state, referring to Figure 15 shown.

[0069] As an optional embodiment, a support portion 72 having a harderness greater than that of the isolation cylinder 71 is spirally provided along the axial direction on the isolation cylinder 71 to guide the isolation cylinder 71 to retract or extend axially during the firing and retraction process of the firing transmission rod 25. Figures 18 and 19 As shown, the support portion 72 in the embodiment of the present application can be a rib-like structure that is spirally arranged on the isolation tube 71 along the axial direction. The support portion 72 can be made of elastic metal or a composite material with a certain hardness, which supports the isolation tube 71. The spiral structure on the support portion 72 is evenly spaced on the isolation tube 71 to guide the isolation sleeve 70 to be evenly compressed when the firing transmission rod 25 is fired and moves toward the distal end, thereby avoiding the problem of excessive local compression that is difficult to recover to the elongated state or damage to the isolation tube 71, which is beneficial to improving the service life of the isolation tube 71. The support portion 72 of the isolation sleeve 70 is an elastic spiral support member so as to be easily compressed or stretched.

[0070] As an optional embodiment, Figure 15-16As shown, the firing transmission rod 25 is provided with a first engaging protrusion 251, and the inner wall of the first joint 710 is provided with a first engaging groove 711. The isolation sleeve 70 is installed on the outer side of the firing transmission rod 25, and the first engaging protrusion 251 is engaged with the first engaging groove 711. In the embodiment of the present application, after the first engaging protrusion 251 is engaged with the first engaging groove 711, the first engaging groove 711 acts as a limiter for the first engaging protrusion 251, thereby fixing the first joint 710 to the firing transmission rod 25. The first engaging groove 711 can be an annular groove, and the first engaging protrusion 251 is an annular protrusion arranged along the circumference of the firing transmission rod 25. The annular protrusion is arranged in the annular groove along the circumference of the firing transmission rod 25, which helps to increase the stability and sealing of the connection. In an optional embodiment, a first clamping protrusion is provided on the inner wall of the first joint 710, and a first clamping groove is provided on the firing transmission rod 25. The first clamping protrusion and the first clamping groove are adapted to be clamped together, which is similar to the above-mentioned clamping structure and will not be repeated here.

[0071] As an optional embodiment, Figure 15-16 As shown, the barrel core 27 is provided with a snap-fit ​​seat 271, which is embedded into the barrel core 27 through a through hole 272 opened on the side wall of the barrel core 27, and the second joint 712 is snap-fitted with the snap-fit ​​seat 271. Figures 15 to 17 As shown, during the installation process, the firing transmission rod 25 with the isolation sleeve 70 is inserted into the barrel core 27, the second joint 712 of the isolation sleeve 70 is arranged opposite to the through hole 272, and then the clamping seat 271 is embedded in the through hole 272 and the clamping seat 271 is clamped with the second joint 712 to achieve the effect of connecting the second joint 712 of the isolation sleeve 70 with the barrel core 27.

[0072] As an optional embodiment, Figure 20 As shown, the clamping seat 271 is provided with a second clamping groove 2710 and a limiting step 2711 protruding from the second clamping groove 2710. The second joint 712 includes a fitting section, which is pressed on the second clamping groove 2710 and clamped with the limiting step 2711, so that the limiting step 2711 is sealed and clamped with the first joint 710. Figure 20 As shown, the limiting step 2711 and the isolation sleeve 70, together with the firing transmission rod 25, function to limit and seal the second joint 712, thereby increasing the stability of the isolation sleeve 70 disposed on the engaging seat 271. Specifically, the support portion 72 of the isolation sleeve 70, under the action of the firing transmission rod 25, continuously applies a biasing force to the limiting step 2711, thereby maintaining the second joint 712 and the engaging seat 271 in a continuously limited and sealed state.

[0073] As an optional embodiment, the second connector 712 is provided with a second clamping protrusion 713. After the second clamping protrusion 713 is clamped in the second clamping groove 2710, the second clamping groove 2710 limits the second clamping protrusion 713, thereby limiting the second connector 712 on the clamping seat 271. Figure 20 As shown, the second engaging groove 2710 can be an arc-shaped groove, and the second engaging protrusion 713 is an arc-shaped protrusion arranged along the circumference of the barrel inner core 27. The arc-shaped protrusion is fitted in the arc-shaped groove along the circumference of the barrel inner core 27. The arc-shaped protrusion and the arc-shaped groove are fitted at the connection point, which is conducive to increasing the stability of the connection.

[0074] The present application also provides a surgical instrument, comprising an adapter having the above-mentioned elongated body assembly 20 and a shielding shell, and a handle 10, wherein the elongated body assembly 20 comprises a rotating head 23, a barrel 24 connected to the rotating head 23, a firing transmission rod 25, and an isolation sleeve 70. Figures 4 and 5 As shown, the embodiment of the present application can realize the detachable connection between the reusable handle 10 and the disposable adapter, and the slender body component 20 of the adapter and the handle 10 can be connected by snapping and snapping interfaces.

[0075] The shielding shell includes a shielding body 40 and a shielding cover 41. The shielding body 40 has a first direction ( Figure 4-Figure 5 The first direction intersects with the longitudinal axis direction; the shielding cover 41 can open or close the opening of the shielding body 40. Figure 4 As shown, the handle 10 is placed into the accommodating cavity of the shielding body 40 along the H direction, and then the shielding cover 41 is used to shield the handle 10 from the outside world. The distal end of the shielding shell abuts against the proximal side of the rotating head assembly 23, so that the handle 10 is entirely located inside the shielding shell, forming a sterile outer surface of the surgical instrument.

[0076] like Figure 4-Figure 5As shown, the shielding body 40 is pivotally connected to the shielding cover 41 and can be selectively snapped together to form a cavity for accommodating the handle 10. Specifically, a cavity is formed inside the shielding body 40 for accommodating the gripping portion of the handle 10, and a cavity is formed inside the shielding cover 41 for accommodating the cover-shaped portion of the handle 10. An opening is provided above the shielding body 40 for the gripping portion of the handle 10 to enter and exit the cavity; the shielding cover 41 is configured as a cover that can open or close the opening. Specifically, one end of the shielding body 40 and the shielding cover 41 is pivotally connected. After the handle 10 is inserted along the H direction, the shielding cover 41 is pivoted along the X direction so that the shielding cover 41 covers the shielding body 40. The shielding body 40 and the shielding cover 41 are fixed together using a detachable snap-fit ​​connection, so that the opening and the cover can be selectively connected and closed to form a sterile shielding sleeve / shielding shell, which is used to enclose the handle 10 therein, thereby forming a sterile outer surface of the surgical instrument. In an alternative embodiment, the shielding body 40 is detachably connected to the proximal end face 231 of the rotating head assembly 23, and the distal end face of the shielding body 40 is suitable for abutting against the proximal end face 231 of the rotating head assembly 23, and is connected and fixed to the rotating assembly 23 by three fastening screws passed through the connecting lugs.

[0077] Reference Figures 4 and 5 The embodiment of the present application is that the handle 10 is detachably connected to the shielding shell 40 / 41 of the adapter, which can isolate the handle 10 and the operator when the handle 10 is in use to avoid the transfer of contamination, and update the adapter after a single use to avoid contamination of the handle 10. At the same time, the handle 10 will not contaminate the adapter.

[0078] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An adapter for selectively adapting and interconnecting a handle with an end-effector assembly, wherein the end-effector assembly is configured to perform a surgical operation, the end-effector assembly includes a firing member that translates along its axial direction, the handle is configured to actuate the end-effector assembly, the handle includes a firing drive rod that moves along a longitudinal axis, and the adapter is characterized in that: The adapter comprises: an elongated body assembly having a proximal end and a distal end, Its proximal end is configured and adapted to be connected to the handle and to be in operative communication with the firing drive rod; The distal end portion thereof is configured to be connected to the end effector assembly and to be in operative communication with the firing member of the end effector assembly; a firing transmission rod configured to interconnect the firing drive rod and the firing member, the firing transmission rod transmitting movement of the firing drive rod of the handle along the longitudinal axis to the firing member of the end effector assembly to cause the firing member to translate axially; The isolation sleeve is configured to be sleeved outside the firing transmission rod, with its proximal end connected to the firing transmission rod and moving together, and its distal end connected to the inner core of the barrel of the elongated body assembly, Wherein, the isolation sleeve isolates the space formed by the firing transmission rod and the inner core of the barrel into unconnected proximal space and distal space, so as to block the transfer of contaminants between the firing drive rod of the handle and the firing component of the end execution assembly.

2. An adapter according to claim 1, characterized in that: At least a portion of the isolation sleeve is made of flexible material so that it can be stretched and retracted along the axial direction.

3. The adapter according to claim 1, wherein: The isolation sleeve comprises a flexible isolation cylinder, and the isolation cylinder is axially telescopically arranged.

4. The adapter according to claim 3, characterized in that: The two ends of the isolation cylinder are respectively provided with a first joint and a second joint; The first joint is connected to the firing transmission rod, and the second joint is connected to the inner core of the barrel of the slender body assembly. When the end execution assembly is fired, the firing transmission rod compresses the isolation sleeve, and when the end execution assembly retracts, the firing transmission rod drives the isolation sleeve to extend.

5. The adapter according to claim 3, characterized in that: A support portion having a harderness greater than that of the isolation tube is spirally provided along the axial direction on the isolation tube to guide the isolation tube to correspondingly retract or extend along the axial direction during the firing and retraction of the firing transmission rod.

6. The adapter according to claim 4, characterized in that: The first joint is clamped with the firing transmission rod; The gun barrel inner core is provided with a clamping seat, which is embedded in a through hole opened on the side wall of the gun barrel inner core and is clamped with the second joint.

7. The adapter according to claim 6, characterized in that: The firing transmission rod is provided with a first clamping protrusion, and the inner wall of the first joint is provided with a first clamping groove, and the first clamping protrusion is clamped into the first clamping groove; The clamping seat is provided with a second clamping groove, and the second connector is provided with a second clamping protrusion, which is clamped into the second clamping groove.

8. The adapter according to claim 7, characterized in that: The clamping seat is also provided with a limiting step protruding from the second clamping groove, and the second joint includes a fitting section, which is pressed between the limiting step and the firing transmission rod to enable the limiting step to be sealed and clamped with the second joint.

9. The adapter according to claim 8, characterized in that: The second clamping groove is an arcuate groove, and the second clamping protrusion is an arcuate protrusion extending along the circumference of the gun barrel inner core. The arcuate protrusion is fitted in the arcuate groove along the circumference of the gun barrel inner core.

10. An adapter according to any one of claims 1 to 9, characterized in that: It also includes a shielding shell covering the outside of the handle, the shielding shell includes a shielding body and a shielding cover, the shielding cover is pivotally connected to the shielding body and can be selectively snapped together to form an accommodating cavity for accommodating the handle.

11. A surgical instrument, characterized in that: include: A handle and an adapter according to any one of claims 1 to 10, wherein the handle and the adapter are detachably connected.

12. The surgical instrument according to claim 11, wherein: The elongated body assembly includes a rotating head having an inner core, a guide plate is provided on the inner core of the rotating head, and the guide plate includes a first guide surface and a second guide surface that are oppositely arranged; The handle is provided with a first clamping plate and a second clamping plate arranged opposite to each other, the guide plate is clamped between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are respectively slidably clamped on the outer sides of the first guide surface and the second guide surface.

13. The surgical instrument according to claim 12, wherein: The handle is provided with a retractable card block and a control member that drives the card block to retract, and the card block is located between the first card plate and the second card plate; The guide plate is provided with a receiving groove, and a clamping interface is provided on the groove wall of the receiving groove. When the clamping block slides from the notch of the receiving groove to the position of the clamping interface, it is clamped in the clamping interface.

Images