Surgical stapler with firing lockout feature coupled to end effector jaw

Abstract

An apparatus (1000) includes a shaft (600A) and an end effector (1200, 2200) configured to receive a staple cartridge (210), the staple cartridge having a slide (1210a, 2210a) and a staple. The end effector includes a knife (1206, 2206), an anvil jaw (204, 1204), a cartridge jaw (1208, 2208), and a stopper (1255, 2255) coupled to the cartridge jaw. The stopper is vertically translatable relative to the cartridge jaw and the knife between a raised position and a lowered position. The stopper in the raised position is configured to directly contact the knife and thereby prevent distal advancement of the knife, and the stopper in the lowered position is configured to allow distal advancement of the knife. The stopper is configured to assume a raised position in the absence of an unused staple cartridge and a lowered position in the presence of an unused staple cartridge.

Description

Background Technology

[0001] In some settings, endoscopic surgical instruments may be preferred over traditional open surgical devices to minimize surgical incision size, postoperative recovery time, and complications. Therefore, some endoscopic surgical instruments are adapted to place distal end-effectors at desired surgical sites via cannulation of a trocar. These distal end-effectors (e.g., end-cutters, grippers, scalpels, suture devices, clamps, entry devices, drug / gene therapy delivery devices, and energy delivery devices using ultrasound, RF, lasers, etc.) can engage tissue in various ways to achieve diagnostic or therapeutic effects. Endoscopic surgical instruments may include an axis extending proximally from the end-effector to a handle portion manipulated by the clinician, or alternatively to a robotic arm. Such an axis allows insertion to the desired depth and rotation about the longitudinal axis of the axis, facilitating the positioning of the end-effector within the patient. Positioning of the end-effector can be further facilitated by including one or more articulation joints or features, allowing the end-effector to selectively perform articulation or otherwise deflect relative to the longitudinal axis of the axis.

[0002] Examples of endoscopic surgical instruments include surgical sutures. Some of these sutures are operable to clamp a layer of tissue, cut through the clamped tissue, and drive a staple through the tissue to substantially seal the cut tissue layers together near the cut ends. Such endoscopic surgical sutures can also be used in open abdominal surgeries and / or other non-endoscopic procedures. By way of example only, in thoracic surgery, a surgical suture can be inserted via a thoracotomy and thereby positioned between the patient's ribs to reach one or more organs, in which a trocar is not used as the conduit for the suture. Such procedures may involve using a suture to cut and close blood vessels leading to organs such as the lungs. For example, blood vessels leading to an organ can be cut and closed using a suture before it is removed from the thoracic cavity. Of course, surgical sutures can be used in a variety of other situations and procedures.

[0003] The surgical suture feature of this disclosure attempts to prevent firing of the surgical suture end effector when the end effector is loaded with a fired, used staple cartridge and / or when the end effector is completely devoid of a staple cartridge. Specifically, such a feature of this disclosure places the end effector in a locked state that prevents firing in either of the aforementioned scenarios. Although various surgical sutures and associated components have been manufactured and used, it is believed that no one has manufactured or used the invention described in the appended claims prior to the inventors. Attached Figure Description

[0004] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate examples of the invention and, together with the general description of the invention given above and the detailed description of the examples given below, serve to explain the principles of the invention.

[0005] Figure 1 It is a perspective view of an exemplary surgical instrument having a housing, shaft assembly, articulated joint, and end effector;

[0006] Figure 2 yes Figure 1 A partial perspective view of a surgical instrument, wherein selected components are omitted from the view to expose portions of the instrument's cable joint motion subsystem, scalpel firing subsystem, and rolling subsystem;

[0007] Figure 3 yes Figure 1 Enlarged perspective view of the end effector and joint motion connector of the surgical instrument;

[0008] Figure 4 yes Figure 1 An exploded view of the distal end portion of a surgical instrument;

[0009] Figure 5 yes Figure 1 A magnified perspective view of the end effector of a surgical instrument;

[0010] Figure 6 yes Figure 3 End view of the end effector;

[0011] Figure 7 yes Figure 3 Enlarged perspective view of the end effector and articulated joint, with the anvil of the end effector omitted;

[0012] Figure 8A yes Figure 1 A side sectional view of the distal end portion of a surgical instrument, depicting the anvil in the open position;

[0013] Figure 8B yes Figure 1 A side sectional view of the distal end portion of a surgical instrument, depicting the anvil in a gripping position as the knife is partially advanced;

[0014] Figure 8C yes Figure 1 A side sectional view of the distal end portion of a surgical instrument, depicting the anvil in a clamping position as the knife is partially advanced;

[0015] Figure 8D yes Figure 1 A side sectional view of the distal end portion of a surgical instrument, depicting the anvil in the clamping position with the knife fully advanced;

[0016] Figure 9A yes Figure 1 An enlarged side sectional view of the proximal end portion of the end actuator of a surgical instrument, depicting the anvil in the open position;

[0017] Figure 9B yes Figure 1 An enlarged side sectional view of the proximal end portion of the end effector of a surgical instrument, depicting the anvil in the gripping position as the knife is partially advanced;

[0018] Figure 9C yes Figure 1 An enlarged side sectional view of the proximal end portion of the end effector of a surgical instrument, depicting the anvil in a clamping position as the knife is partially advanced;

[0019] Figure 9D yes Figure 1 An enlarged side sectional view of the proximal end portion of the end effector of a surgical instrument, depicting the anvil in the clamping position with the knife fully advanced;

[0020] Figure 10 yes Figure 1 Exploded perspective view of the joint motion joint of a surgical instrument;

[0021] Figure 11 yes Figure 10 End view of the joint motion joint;

[0022] Figure 12 It is along Figure 11 The line 12-12 cut Figure 10 A cross-sectional view of a portion of the joint motion joint;

[0023] Figure 13 It is along Figure 11 The line 13-13 was cut off Figure 10 A cross-sectional view of a portion of the joint motion joint;

[0024] Figure 14 yes Figure 1 A perspective view of the distal end of a surgical instrument, depicting the end effector performing joint movements vertically and laterally with the anvil open;

[0025] Figure 15 yes Figure 1 A side view of the distal end of a surgical instrument, depicting the end effector performing joint movements vertically with the anvil closed;

[0026] Figure 16 yes Figure 1A top view of the distal end of a surgical instrument, depicting the end effector performing lateral joint movements with the anvil closed;

[0027] Figure 17 yes Figure 1 An exploded perspective view of a portion of a surgical instrument, depicting parts of the cable joint motion subsystem, the scalpel firing subsystem, and the rolling subsystem;

[0028] Figure 18 yes Figure 1 A top view of the proximal end of a surgical instrument, depicting parts of the cable joint motion subsystem, the scalpel firing subsystem, and the rolling subsystem;

[0029] Figure 19 yes Figure 1 A perspective view of the shaft assembly, differential, and firing lever of a surgical instrument;

[0030] Figure 20 This is an exploded perspective view of another end effector, which includes a blade and a locking assembly, as well as other components omitted from the view;

[0031] Figure 21 yes Figure 20 Exploded perspective view of the locking assembly of the end effector;

[0032] Figure 22A yes Figure 20 A side sectional view of the proximal end portion of the end actuator, depicting the locking assembly in a locking configuration;

[0033] Figure 22B yes Figure 20 A side sectional view of the proximal end portion of the end actuator depicts the sliding element of the unused staple cartridge causing the locking assembly to switch to an unlocked configuration when the unused staple cartridge is placed in the end actuator.

[0034] Figure 22C yes Figure 21 A side sectional view of the proximal end portion of the end effector, depicting the slider and the blade translating beyond the locking assembly;

[0035] Figure 23 It is an exploded perspective view of another end effector, including the blade, slider, and locking assembly;

[0036] Figure 24 yes Figure 23 Exploded perspective view of the blade and locking assembly of the end effector;

[0037] Figure 25A yes Figure 23 A side sectional view of the proximal end portion of the end actuator, depicting the locking assembly in a locking configuration;

[0038] Figure 25B yes Figure 23 A side sectional view of the proximal end portion of the end actuator depicts the sliding element of the unused staple cartridge causing the locking assembly to switch to an unlocked configuration when the unused staple cartridge is placed in the end actuator.

[0039] Figure 25C yes Figure 23 A side sectional view of the proximal end portion of the end effector, depicting the slider and the blade translating beyond the locking assembly;

[0040] Figure 26 This is an exploded perspective view of another end effector, which includes a blade, jaws, and locking assembly, as well as other components omitted from the view;

[0041] Figure 27 yes Figure 26 A top view of the jaws and locking assembly of the end effector;

[0042] Figure 28 yes Figure 26 Exploded perspective view of the locking assembly of the end effector;

[0043] Figure 29A yes Figure 26 A perspective view of the end effector's blade and locking assembly, depicting the locking assembly in a locked configuration;

[0044] Figure 29B yes Figure 26 A perspective view of the end effector's blade and locking assembly, depicting the locking assembly in the unlocked configuration;

[0045] Figure 30A yes Figure 26 A side sectional view of the end effector's blade and locking assembly, depicting the locking assembly in a locked configuration;

[0046] Figure 30B yes Figure 26 A side sectional view of the end effector's blade and locking assembly, depicting the locking assembly in the unlocked configuration;

[0047] Figure 31 yes Figure 26 A side sectional view of the end effector's blade and locking assembly, depicting the locking assembly in an unlocked configuration and the blade translating distally;

[0048] Figure 32 This is an exploded perspective view of another end effector, which includes a blade, jaws, a slider, and a locking assembly, as well as other components omitted from the view;

[0049] Figure 33A yes Figure 32 A top view of the proximal end portion of the end actuator, depicting the locking assembly in a locking configuration;

[0050] Figure 33B yes Figure 32 A top view of the proximal end portion of the end actuator, depicting the sliding member causing the locking assembly to switch to an unlocked configuration when an unused staple cartridge is placed in the jaws;

[0051] Figure 33C yes Figure 32 A top view of the proximal end portion of the end effector, depicting the slider and the blade translating beyond the locking assembly;

[0052] Figure 34 This is an exploded perspective view of the proximal end portion of another end effector, which includes a blade, jaws, and locking assembly, as well as other components omitted from the view;

[0053] Figure 35 yes Figure 34 A perspective view of the proximal end portion of the end actuator, depicting the locking assembly in a locking configuration;

[0054] Figure 36A yes Figure 34 A top view of the proximal end portion of the end actuator, depicting the locking assembly in a locking configuration;

[0055] Figure 36B yes Figure 34 A top view of the proximal end portion of the end effector depicts the sliding element causing the locking assembly to switch to an unlocked configuration when an unused staple cartridge is positioned in the jaws; and

[0056] Figure 36C yes Figure 34 A top view of the proximal end portion of the end effector, depicting the slider and blade translating beyond the locking assembly. Detailed Implementation

[0057] The following detailed description should be read in conjunction with the accompanying drawings, in which the same elements are labeled the same in different drawings. The drawings (not necessarily drawn to scale) depict the selected types and are not intended to limit the scope of the invention. The principles of the invention are illustrated by way of example rather than limitation. This description will clearly enable those skilled in the art to make and use the invention, and describes several types, modifications, variations, alternatives, and uses of the invention, including those currently believed to be the best mode for carrying out the invention.

[0058] This document sets forth numerous specific details to provide a thorough understanding of the overall structure, function, manufacture, and use of the types described and illustrated in the specification and figures. Well-known operations, components, and elements are not described in detail to avoid obscuring the types described in the specification. The reader will understand that the types described and illustrated herein are non-limiting examples, and thus will recognize that the specific structural and functional details disclosed herein may be representative and illustrative. Variations and changes may be made to these embodiments without departing from the scope of the claims.

[0059] The terms “comprise” (and any form of “comprise”, such as “comprises” and “comprising”), “have” (and any form of “have”, such as “has” and “having”), “include” (and any form of “include”, such as “includes” and “including”), and “contain” (and any form of “contain”, such as “contains” and “containing”) are open-ended linking verbs. Therefore, a surgical system, apparatus, or device that “comprises,” “haves,” “includes,” or “contains” one or more elements has, but is not limited to, having only those elements. Similarly, the elements of a system, apparatus, or device that “comprises,” “haves,” “includes,” or “contains” one or more features have, but are not limited to, having only those features.

[0060] The terms "proximal" and "distal" are used herein in relation to the robotic platform of the housing portion that manipulates the surgical instruments. "Proximal" refers to the portion closest to the robotic platform, and "distal" refers to the portion furthest from the robotic platform. It should also be understood that, for the sake of brevity and clarity, spatial terms such as "vertical," "horizontal," "upper," and "lower" may be used herein with reference to the accompanying drawings. However, surgical instruments are used in many orientations and orientations, and these terms are not restrictive and / or absolute.

[0061] Furthermore, the terms “about,” “approximately,” “substantially,” etc., used herein in connection with any numerical value, range of values, and / or geometric / positional quantification are intended to cover the exact value or quantification referenced, and the appropriate tolerance that enables the referenced feature or combination of features to be used for the intended purpose described herein. For example, “substantially parallel” covers structures that are nominally parallel, and “substantially equal” covers values ​​that are nominally equal.

[0062] Furthermore, the use of the phrases “connected,” “connected,” or similar should not be interpreted as limited to a certain number of parts or a particular order of parts, unless the context clearly indicates otherwise.

[0063] I. Overview of exemplary surgical instruments

[0064] Figures 1 to 2 An exemplary surgical instrument 1000 configured to grasp, clamp, cut, and seal patient tissue using pins is shown. The surgical instrument 1000 includes: an end effector 200; an articulation joint 300 (also referred to as a "continuum joint"); an articulation drive subsystem 400 configured to articulate the end effector 200 via the articulation joint 300; a scalpel firing subsystem 500 configured to actuate the end effector 200 between various positions (e.g., open position, grasping position, and clamping position) and to cut and suture patient tissue; a rolling subsystem 600 configured to rotate the end effector 200 about a rolling axis RA; and a housing 700.

[0065] like Figures 3 to 4 As best shown, the end effector 200 includes a first jaw 202 (also referred to as a "jaw" or "channel") and a second jaw 204 (also referred to as a "anvil jaw" or simply a "nanometer"), the second jaw being movable relative to the jaw 202 between an open position and a closed position. The jaw 202 and the anvil 204 may be elongated. The jaw 202 defines an elongated channel 208 for receiving the staple cartridge 210 (also referred to as "reloading"). The anvil 204 has a proximal end 204A, a distal end 204B, and a ramp surface 216 defined at the proximal end 204A, which will be described below relative to... Figure 4 and Figures 9A to 9D A more detailed description follows. The jaws 202 and the anvil 204 are pivotally connected via a pivot pin 212 extending through the jaws 202 and the anvil 204. (See attached image.) Figure 7 As shown, one or more bias springs 214 extend between the jaws 202 and the anvil 204 to bias the anvil 204 to the open position.

[0066] The slope surface 216 is visible through a bean-shaped opening 222 (which may be formed as part of the manufacturing process of the slope surface 216), the bean-shaped opening having a first lateral end 222A and a second lateral end 222B. In other words, the bean-shaped opening is visible at its lateral ends 222A and 222B. Figure 3 (The area is open.) For example... Figure 4 As shown, the slope surface 216 forms the lower surface of the bean-shaped opening 222. The slope surface 216 can be arc-shaped. For example, as... Figure 4 and Figures 9A to 9D As specifically shown, the slope surface can tilt upward at a first angle 218 and taper out in an arc shape in the distal direction to a second angle 220 that is substantially horizontal.

[0067] Anvil 204 also defines a longitudinally extending upper knife channel 224 (see Figure 8A (etc.). For example... Figure 6 As specifically shown, the upper tool channel 224 includes a centrally located cylindrical upper tool channel portion 226 and at least one lateral upper tool channel wing 228 extending away from the upper tool channel portion 226. Although the term "cylindrical" is used, the channel portion 226 does not necessarily resemble a perfect cylinder.

[0068] like Figure 2 and Figure 17 As shown, the surgical instrument 1000 also includes a scalpel firing subsystem 500, which is operable to close the anvil 204 during the closing stroke. After the end effector 200 closes, the scalpel firing subsystem 500 is operable to cut and suture patient tissue captured between the staple cartridge 210 (which is held by the cartridge jaws 202) and the anvil 204 using staples from the cartridge 210 during the firing stroke.

[0069] like Figures 4 to 6 As best illustrated, the knife firing subsystem 500, explained in further detail below, includes a knife 206 having a knife slide 236. The knife slide 236 is a non-cutting element of the knife 206 and functions as a firing actuator via a distally driven chamber slide 210A during the firing stroke, as described below. In some cases, the knife slide 236 may be referred to as an I-beam. The knife slide 236 includes an upper knife tab 238, a lower knife tab 246, and a vertical post 235 connecting and extending between the upper knife tab 238 and the lower knife tab 246. The upper knife tab 238 includes a centrally located cylindrical upper knife tab portion 240 and at least one upper knife tab lateral wing 242 extending away from the upper knife tab portion 240. Although the term "cylindrical" is used, the tab portion does not necessarily resemble a perfect cylinder.

[0070] The upper blade 238 may include a pair of lateral wings 242 configured to slidably straddle the upper blade channel 224 to move the anvil 204 between an open position, a gripping position, and a clamping position. Thus, the end effector 200 employs a "blade-based closure," where the closure of the anvil 204 relative to the channel 208 is driven by the distal advance of the blade 206. Each lateral wing 242 may include an inclined surface 242A that engages the anvil ramp surface 216. The upper blade portion 240 defines an upper blade opening 244 configured to receive a barrel-shaped crimp connected to the central cable 512, which is described in more detail below. The lower blade 246 includes a centrally located cylindrical lower blade portion 248 and at least one lower blade lateral wing 250 extending away from the lower blade portion 248. Although the term "cylindrical" is used, the lower blade portion 248 does not necessarily resemble a perfect cylinder. In some versions, the lower blade 246 includes a pair of lateral wings 250. The lower blade portion 248 defines a lower blade opening 252, which is configured to receive a barrel-shaped crimp portion connected to the center cable 514, as described in more detail below.

[0071] The staple cartridge 210 can be generally constructed and operated according to the teachings of the following patent: U.S. Patent Application No. 18 / 588,684, filed February 27, 2024, entitled "Methods of Surgical Stapling," the entire disclosure of which is incorporated herein by reference. In use, the end effector 200 is positioned relative to the patient tissue such that the staple cartridge 210 is positioned on a first side of the tissue, and the anvil 204 is positioned on the opposite second side of the tissue. The anvil 204 then approaches the staple cartridge 210 to compress and clamp the tissue against the platform of the staple cartridge 210. Subsequently, the surgical instrument 1000 is fired, causing the blade 206 to advance distally through the staple cartridge 210 to cut the clamped tissue, while simultaneously actuating the staple driver housed within the staple cartridge 210 to drive the staple array into the clamped tissue on either side of the cutting line. The staple cartridge 210 defines an elongated blade channel 215, which is sized to receive a portion of a vertical post 235 to accommodate the advancement of the blade 206 through the staple cartridge 210. A portion of a cartridge slider 210A is slidably accommodated within the elongated blade channel 215 such that when the blade 206 is advanced distally as described herein, the vertical post 235 drives the cartridge slider 210A distally (see [link to document]). Figures 8C to 8D In some cases, even after the blade 206 retracts proximally after firing the cartridge 210 as described herein, the cartridge slide 210A remains distal relative to the rest of the cartridge 210 (see [link to document]). Figure 8D ).

[0072] As described above, the jaw 202 defines an elongated channel 208 for receiving the staple cartridge 210. Additionally, the jaw 202 also defines a lower blade channel 230 (see...). Figure 4 , Figure 6 and Figures 8A to 9D The lower blade channel is sized to slidably receive the lower blade protrusion 246. (Reference) Figure 6 The lower blade channel 230 includes a centrally located cylindrical lower blade channel portion 232 and at least one laterally downward lower blade channel wing 234 extending away from the lower blade channel portion 232. The cylindrical lower blade channel portion 232 communicates with an elongated channel 208 such that when the staple cartridge 210 is properly engaged with the jaws 202, the elongated blade channel 215 of the staple cartridge 210 and the centrally located cylindrical lower blade channel portion 232 are aligned to accommodate actuation of the blade slide 236 within the two channels 215, 230. The laterally downward lower blade channel wing 234 is sized to slidably accommodate a corresponding lower blade tab lateral wing 250. The lower blade tab lateral wing 250 is configured to slidably contact the laterally downward lower blade channel wing 234 as the blade 206 is advanced according to the description herein. The contact between the lower blade lateral wing 250 and the lateral lower blade passage wing 234 cooperatively assists the lateral wing 242 and the upper blade passage 224 in closing the anvil 204 relative to the passage 208, as described herein. Although the term "cylindrical" is used, the passage portion 232 need not resemble a perfect cylinder. Other arrangements of the nail cavity and nails are also possible. For example, in some types, the lower blade passage 230 may be defined within the jaws 202.

[0073] In addition to the above, the blade slide 236 also moves distally and proximally via the firing lever 502. The firing lever 502 is configured to apply an indirect force to the blade slide 236 via push coils 508, 510 that directly engage the blade slide 236 (discussed in more detail below), and to push the blade slide 236 toward the distal end of the end effector 200 during the firing stroke. As the firing lever 502 advances distally, the blade slide 236 straddles the lower blade passage 230 and the upper blade passage 224. At the start of the stroke, the upper blade protrusion 238 rides along the anvil ramp surface 216. Specifically, as particularly in Figures 8A to 8D and Figures 9A to 9D As shown in the sequence, the distal movement of the blade slide 236 causes the upper blade tip inclined surface 242A to slide along the anvil ramp surface 216. This movement first forces the anvil 204 to close to a position where compressive force is applied to the tissue sufficiently to grip the tissue (referred to as the gripping position) (e.g., Figure 8B and Figure 9B The slider 236 continues to move upward along the ramp surface 216 (see, for example, see...). Figure 8C and Figure 9CThis results in compressive forces being applied to the tissue (referred to as the clamping position). When the anvil ramp surface 216 transitions to its substantially horizontal angled surface 220 (e.g., see...), Figure 8D and Figure 9D When the upper blade 238 slides within the upper blade channel 224, it can drive the suturing and transverse cutting of the tissue.

[0074] like Figure 1 As shown, the surgical instrument 1000 also includes a body, exemplified as a housing 700, configured to engage a robotic platform (not shown). In other configurations, the body may be configured as a handle capable of being grasped and manipulated by a clinician. Figure 1 and Figure 19 As best shown, shaft assembly 600A extends distally from housing 700 and includes a rotatable outer shaft 602 and an inner shaft 604 arranged in two clamshell halves. The outer shaft 602 is rotatably mounted to housing 700 about a rotary joint (not shown), which may include one or more bearings. The inner shaft 604 is rotatably fixed to the outer shaft 602 and is configured such that articulated motion cables 402, 404, 406, 408 can be partially wound around the inner shaft without tangling. Figure 18 As shown, the housing 700 may accommodate (1) a firing positioning disc assembly 712, which is part of a knife firing subsystem 500 operable to close the end effector 200, the firing pin, and the transverse tissue cutting tool; (2) a set of articulation positioning disc assemblies 702, 704, 706, 708, which are part of an articulation subsystem 400 operable to articulate the end effector 200 relative to the shaft assembly 600A; and (3) a shaft rolling positioning disc assembly 710, which is part of a rolling subsystem 600 configured to roll the outer shaft 602.

[0075] refer to Figures 10 to 13 The articulated joint 300 includes an array of longitudinally arranged joint discs 302 and a central beam assembly 306 that mates with the joint discs 302 to provide at least two degrees of freedom (e.g., yaw and pitch) for articulated motion of the end effector 200, as further described below. Each joint disc 302 includes a central opening 304 configured to be coaxially aligned with the central openings 304 of other joint discs when the articulated joint 300 is in an upright, non-articulated motion state. The central beam assembly 306 extends longitudinally through the central openings 304 of the joint discs 302 and applies a compressive axial force to the array of joint discs 302 to connect the joint discs 302 to each other. The joint discs 302 are nested and stacked along the central beam assembly 306 such that longitudinally adjacent joint discs 302 are movably abutted against each other.

[0076] like Figures 9A to 10As shown, the distal end 306B of the center beam assembly 306 includes a distal retainer 324 that connects the distal end of the articulated joint 300 to the proximal end of the jaw 202 via one or more fasteners 322, thereby mechanically grounding and retaining the jaw 202, and thus mechanically grounding and retaining the end effector 200 relative to the articulated joint 300. The distal retainer 324 includes a plurality of clearance recesses 326 that receive the distal ends of the articulated cables 402, 404, 406, and 408. The distal end 306B also includes a distal retaining disc 334 that defines a plurality of cable retaining openings 334A. The proximal end 306A of the center beam assembly 306 includes a proximal retainer 332 that connects the proximal end of the articulated joint 300 to the distal end of the shaft assembly 600A.

[0077] like Figure 10 , Figure 12 and Figure 13 Specifically shown, each connector plate 302 includes an articulated recess 308, an articulated pin 310 protruding outward from the articulated recess 308, a first push coil opening 312A defined through the articulated recess 308 and configured to receive a first push coil 508 passing therethrough, a second push coil opening 312B defined through the articulated recess 308 and configured to receive a second push coil 510 passing therethrough, and a second push coil opening 312B defined through the articulated recess 308 and configured to receive a second push coil 510 passing through therethrough. Multiple joint motion cable openings 314A-314D (e.g., first joint motion cable opening 314A, second joint motion cable opening 314B, third joint motion cable opening 314C, and fourth joint motion cable opening 314D) through corresponding joint motion cables 402, 404, 406, 408 (e.g., first joint motion cable opening 402, second joint motion cable opening 404, third joint motion cable opening 406, and fourth joint motion cable opening 408), and discussed in more detail below. Figure 12 and Figure 13 As shown, the central opening 304 is defined in the articulated pin 310 of each connector plate 302. In some models, three articulated cable openings 314A, 314B, and 314C are provided to correspond to three articulated cables 402, 404, and 406, while in other models, four articulated cable openings 314A, 314B, 314C, and 314D are provided to correspond to four articulated cables 402, 404, 406, and 408.

[0078] Each connector plate 302 also includes a proximal end 310A of a circular articulated pin and a hemispherical pin receiving opening 316 defined in an articulated socket 308. For example... Figure 12 and Figure 13As specifically shown, the proximal end 310A of each circular articulated pin pivotally engages in an adjacent pin receiving opening 316 of an adjacent connector disc 302, except for the proximal end 310A that engages with the proximal retainer 332. The proximal end 310A of the articulated pin and the pin receiving opening 316 engage in a manner similar to that of a rotary bearing. Furthermore, the articulated socket 308 includes a socket disc 318 and a pin retaining socket 320. A pair of pins 336 provides a rotational connection about the main axis of the shaft assembly 600A from one disc 302 to the next. In other words, these pins constrain the rotational degrees of freedom between adjacent connector discs 302 about the rolling axis RA of the instrument 1000. In an alternative embodiment, this feature may be integral with the connector disc 302.

[0079] The center beam assembly 306 also includes a center beam 328 that extends longitudinally through a central opening 304 of the joint disc 302. The center beam 328 includes a nitinol core 328A and a stainless steel collar 328B wound around the nitinol core 328A, which allows the center beam 328 to bend elastically during flexure of the articulated joint 300. The wound stainless steel collar 328B may have clockwise and counterclockwise braids to prevent unwinding. The center beam assembly also includes an adjusting screw 330 threaded to a proximal retainer 332 to adjust the axial compressive force applied by the center beam 328 to the array of joint discs 302, thereby enabling adjustment of the preload of the articulated joint 300.

[0080] The aforementioned articulated joint 300 forms part of the cable articulated subsystem 400, which allows the end effector 200 to move precisely 360 degrees around the articulated joint 300 with at least two degrees of freedom. In some configurations, and as required by the roller system 600 and the need to limit the amount of winding of the articulated cables 402, 404, 406, 408, the articulated joint 300 is allowed to roll approximately 320 degrees throughout the system. The cable articulated subsystem 400 also includes a plurality of articulated cables 402, 404, 406, 408, each articulated cable having distal ends 402A, 404A, 406A, 408A connected to the distal end 306B of the central beam assembly 306, and proximal ends 402B, 404B, 406B, 408B. More specifically, each distal end 402A, 404A, 406A, 408A may include a crimp that engages a cable retention opening 334A of the distal retaining disc 334 to retain its positioning. Each articulation cable may be separately actuated to cause rotation of the articulation joint 300 and the end effector 200 about at least one of the pitch axis PA and the yaw axis YA.

[0081] In some configurations, three articulated motion cables may be provided instead of the four cables 402, 404, 406, 408 shown herein. However, the four articulated motion cables 402, 404, 406, 408 (as shown in the figure) spaced approximately 90 degrees circumferentially apart provide load distribution. Additionally, in alternative configurations, the three- and four-articulated motion cable configurations may be asymmetrically spaced relative to each other.

[0082] The shaft assembly 600A and the housing 700 also form part of the cable articulation subsystem 400. More specifically, each articulation cable 402, 404, 406, 408 extends from the articulation joint 300 and passes through the shaft assembly 600A to reach the housing 700. The proximal ends 402B, 404B, 406B, 408B of each articulation cable (402, 404, 406) are movably mounted in the housing 700, which causes the aforementioned rotation of the articulation joint 300 and the end effector 200. The housing 700 includes articulation positioning disc assemblies 702, 704, 706, 708 having a rotatable winch (not shown), around which the corresponding proximal ends 402B, 404B, 406B, 408B of the articulation cables 402, 404, 406, 408 are wound and mounted.

[0083] Joint motion cables 402, 404, 406, and 408 are guided through shaft assembly 600A, such that they are positioned between outer shaft 602 and inner shaft 604, allowing joint motion cables 402, 404, 406, and 408 to partially wind around it without tangling. Inner shaft 604 also prevents joint motion cables 402, 404, 406, and 408 from interfering with other components extending along the center of device 1000 (through inner shaft 604).

[0084] Articulation cables 402, 404, 406, and 408 are guided and connected to end effector 200 via articulation connector 300, such that movement of these cables in the proximal direction (via winding around a winch around housing 700) causes end effector 200 to articulate in a predetermined manner via articulation connector 300. For example, actuation of the first articulation cable 402 in the proximal direction causes end effector 200 to articulate upward and to the left; actuation of the second articulation cable 404 in the proximal direction causes end effector 200 to rotate upward and to the right; actuation of the third articulation cable 406 in the proximal direction causes end effector 200 to rotate downward and to the left; and actuation of the fourth articulation cable 408 in the proximal direction causes end effector 200 to rotate downward and to the right. Similarly, simultaneous movement of two articulation cables will result in mixed articulation of end effector 200. As those skilled in the art will understand, this configuration provides the aforementioned precise 360-degree articulation of the end effector 200 via the articulation joint 300, the articulation having at least two degrees of freedom and approximately 320 degrees of rolling.

[0085] like Figure 2 , Figure 4 , Figure 5 , Figures 8A to 8D , Figures 9A to 9D , Figure 17 and Figure 19 As shown, the knife firing subsystem 500 includes the aforementioned knife 206, the aforementioned knife slider 236, a firing rod 502 that drives the knife 206 and / or the knife slider 236, a first push rod 504, and a second push rod 506. The firing rod 502 includes a firing rod rack 530 and is driven by a firing positioning disc assembly 712 of the housing 700. The first push rod 504 has a first push rod distal end 504A connected to the knife slider 236 and a first push rod proximal end 504B connected to the firing rod 502. Similarly, the second push rod has a second push rod distal end 506A connected to the knife slider 236 and a second push rod proximal end 506B connected to the firing rod 502. The distal ends 504A and 506A are connected to the corresponding upper and lower portions of the blade slide 236 (e.g., upper blade protrusion 238 and lower blade protrusion 246), which allows the blade 206 to be pushed evenly at its end. In some models, the proximal ends 504B and 506B of the push rods 504 and 506 are connected to the firing lever 502 via a differential 520.

[0086] The knife firing subsystem 500 is constructed in a manner that enables articulation of the end effector 200 while still allowing the knife 206 to function correctly. To this end, the first push rod 504 includes a first flexible portion in the form of a first push coil 508, and the second push rod 506 includes a second flexible portion in the form of a second push coil 510. The push coils 508 and 510 pass through the articulation joint 300 via corresponding push coil openings 312A and 312B, and the push rods 504 and 506 engage corresponding tab openings 244 and 252 in the knife slide member 236. A first center cable 512 extends through the first push coil 508 to engage the knife slide member 236 via a barrel-shaped crimp, and a second center cable 514 extends through the second push coil 510 to engage the knife slide member 236 via a barrel-shaped crimp. The drive coils 508 and 510 provide sufficient stability to the push rods 504 and 506 to deliver the axial striking force to the blade 206, without being too stiff to prevent joint movement at the connector 300. Cables 512 and 514, as described above, engage with the blade slide 236 (see, for example...). Figure 8A This prevents the push coils 508 and 510 from stretching and / or elongating, and serves as a retraction cable when the rods 504 and 506 retract toward the proximal end of the surgical instrument 1000. Each push rod 504 and 506 does not extend through the articulated joint 300 as a whole, and therefore does not need to be flexible. Therefore, the flexibility of the proximal section of each push rod 504 and 506 may be less than that of the push coils 508 and 510.

[0087] II. An exemplary firing locking mechanism connected to the jaws of the jaws.

[0088] It may be desirable to prevent the firing of the surgical instrument 1000 when the end effector 200 is loaded with a fired cartridge 210 (i.e., the "used cartridge" state) and when the end effector 200 is completely unloaded with any cartridge (i.e., the "no cartridge" state). Attempts to fire during these states are due to user error and could potentially lead to unintended actions on patient tissue; that is, cutting tissue without simultaneously sealing it with staples. The following is combined with... Figures 20 to 36C The exemplary configuration shown and described effectively prevents firing in both the used chamber state and the non-used chamber state, thereby preventing such accidental action on the patient's tissues.

[0089] A. First Indicative Firing Lockout Assembly

[0090] like Figure 20As shown, end effector 1200 may be substantially similar to end effector 200, except as otherwise shown and described below. End effector 1200 includes an anvil 1204, a blade 1206, a locking assembly 1250, and a distal retainer 1324, among other features. End effector 1200 also includes a cartridge jaw similar to cartridge jaw 202 and defining an elongated channel 1208 configured to receive a cartridge. Locking assembly 1250 is configured to prevent firing of end effector 1200 in both a used cartridge state and a non-used cartridge state, and allows firing of end effector 1200 only if an unused cartridge is properly positioned (i.e., fully seated) in end effector 1200. The locking assembly 1250 includes a locking body 1255 (also referred to herein as a “blocker”), a pair of locking springs 1270, and a pair of biasing springs 1214, which are substantially similar to the previously mentioned biasing spring 214. Each biasing spring 1214 may include a flat spring base or washer (as shown) capable of abutting against a shelf of the distal retainer 1324. Thus, the flat spring base or washer of the biasing spring 1214 can be used to limit the range of vertical movement of the locking body 1255 relative to the jaws. As described below, the locking body 1255 is configured to translate vertically within an opening, illustrated as a through opening 1209 formed in the base plate of the jaws.

[0091] like Figure 21 As shown, the locking body 1255 of the locking assembly 1250 may be generally U-shaped, including a locking body base 1280 and a pair of locking body arms 1260 extending upward from laterally opposite portions of the base 1280, thereby defining a lateral clearance between the arms 1260. Each arm 1260 includes a proximal spring projection 1257, each of a corresponding bias spring 1214 and a locking spring 1270 engaging the proximal spring projection. As described below, the locking spring 1270 biases the locking body 1255 upward to contact the bias spring 1214, thereby preventing (i.e., blocking) the knife 1206 from advancing distally through the staple cartridge. The locking body 1255 may also include a distally projecting locking body sliding projection 1262, which engages a slider 1210a, as... Figure 22B As shown. The locking body sliding protrusion 1262 is shown positioned on the locking body arm 1260, but may optionally be positioned on the locking body base 1280. The locking body sliding protrusion 1262 is shown including a horizontal engagement surface, but may optionally include an inclined surface as described later in the section on locking assemblies. The biasing spring 1214 and the locking spring 1270 are shown as compression coil springs, but may optionally be any suitable alternative capable of applying a biasing force to the locking body 1255.

[0092] Figures 22A to 22C An illustrative operation of the locking assembly 1250 in the end effector 1200 is shown. For example... Figure 22A As can be seen, when the slider 1210a is positioned distal to its proximal original position (e.g., when the corresponding staple cartridge (not shown) is depleted), the locking spring 1270 biases the locking body 1255 upward to a raised position, in which the locking body base 1280 is positioned within the lower blade channel 1230 to establish a locking configuration in which the locking body base 1280 is positioned to directly contact the distal end of the blade 1206 and thus prevent the blade 1206 from advancing distally from its proximal original position.

[0093] Figure 22B The diagram shows a slider 1210a positioned in its proximal original position when the corresponding staple cartridge, in its unused state, is fully seated in the end effector 1200. The underside of slider 1210a applies a downward force to the upward-facing surface of the locking body slider protrusion 1262, thereby overcoming the biasing force of the locking spring 1270 and driving the locking body 1255 downwards into a lowered position within the through opening 1209. This establishes an unlocked configuration of the locking assembly 1250, in which the blade 1206 is allowed to advance distally between the locking body arms 1260 and above the locking body base 1280, such that the blade 1206 can contact slider 1210a and drive the slider distally to strike a staple in the tissue, such as… Figure 22C As shown. Alternatively, instead of the through opening 1209, the opening may be configured as a cavity whose size is set to slidably accommodate the base 1280 of the locking body.

[0094] Figure 22C The diagram shows the blade 1206 advancing distally and engaging with the slider 1210a, such that the blade 1206 extends distally beyond the locking body 1255 and thus translates freely distally through the firing stroke. Once the blade 1206 has advanced distally beyond the locking body 1255, the locking body 1255 automatically returns from the lowered unlocked position to the raised locked position via the bias of the locking spring 1270.

[0095] B. Second example of an indicative firing locking assembly

[0096] like Figures 23 to 24As shown, end effector 2200 may be substantially similar to end effectors 200 and 1200 described above, and is particularly configured to function similarly to end effector 1200, except as otherwise shown and described below. End effector 2200 includes a blade 2206 and a locking assembly 2250, as well as other features. End effector 2200 also includes a magazine jaw similar to magazine jaw 202 and defining an elongated channel 2208 configured to receive a cartridge. As described below, locking assembly 2250 is configured to prevent firing of end effector 2200 in both a used cartridge state and a non-used cartridge state, and allows firing of end effector 2200 only when an unused cartridge is properly positioned (i.e., fully seated) in end effector 2200. Slider 2210a is shown for representative purposes, and its use will be described below. As described below, the locking body 2255 is configured to be able to translate vertically within an opening, exemplified as a through opening 2209 formed in the bottom plate of the jaw.

[0097] The locking assembly 2250 includes a locking body 2255 (also referred to herein as a “stopping element”) and a pair of locking springs 2270. The locking body 2255 may be generally “U”-shaped and includes a locking body base 2280 and a pair of locking body arms 2260 extending upward from laterally opposite portions of the base 2280, thereby defining a lateral clearance between the arms 2260. The locking body base 2280 is shown as including a locking body spring protrusion 2257, which may alternatively be included on the locking body arms 2260. The locking body spring protrusion 2257 is coupled to the locking springs 2270 to apply a biasing force to the locking body 2255. Although the locking assembly 2250 is shown as having two locking springs 2270, it may alternatively include only one locking spring 2270. Each locking body arm 2260 may include a locking body ramp 2263 that slides against the underside of a slider 2210a, as described below.

[0098] Figures 25A to 25C An exemplary operation of the locking assembly 2250 is shown. Figure 25A The locking assembly 2250 in a locked configuration is shown, wherein the locking spring 2270 biases the locking body 2255 upward to a raised position defining the locking configuration. When in the locked configuration, the locking body base 2280 is positioned within the lower blade channel 2230, thereby abutting the distal end of the blade 2206 and thus preventing (i.e., blocking) distal translation of the blade 2206.

[0099] Figure 25BThe diagram shows the locking assembly 2250 after the lower side of the slider 2210a of the unused staple cartridge has contacted the locking body 2255 and the locking body has been driven downward against the biasing force of the locking spring 2270, thus entering a lowered position in the through opening 2209. This establishes an unlocked configuration of the locking assembly 2250, in which the blade 2206 is allowed to advance distally between the locking body arms 2260 and above the locking body base 2280, such that the blade 2206 can contact the slider 2210a and drive the slider distally to strike the staple in the tissue, as shown. Figure 25C As shown. Alternatively, instead of the through opening 2209, the opening may be configured as a cavity whose size is set to slidably accommodate the base 2280 of the locking body.

[0100] Figure 25C The locking assembly 2250 is shown in the unlocked configuration as the blade 2206 passes through the bolt magazine along the distal firing stroke towards the distal actuation slider 2210a. Although not shown, once the blade 2206 has fully advanced distally beyond the locking body 2255, the locking body 2255 automatically returns from the lowered unlocked position to the raised locked position via the bias of the locking spring 2270.

[0101] Upon completion of the distal firing stroke, the blade 2206 retracts proximally, and the proximal end of the blade 2206 engages the inclined surface 2263 of the locking body 2255 in the raised position, thereby driving the locking body 2255 downward, allowing the blade 2206 to fully return to its proximal original position, as shown below. Figure 25A As shown. Once the knife 2206 is in the position again... Figure 25A As shown, the locking assembly 2250 can again prevent the distal advance of the blade 2206 until the unused staple cartridge with the proximal positioning slider 2210a is placed within the jaws, as indicated. Figure 25B As shown.

[0102] C. Third example of an indicative firing locking assembly

[0103] like Figures 26 to 28 As shown, end effector 3200 may be substantially similar to end effectors 200, 1200, and 2200 described above, except as otherwise shown and described below. End effector 3200 includes a blade 3206 and a locking assembly 3250, as well as other features. End effector 3200 also includes a cartridge jaw similar to cartridge jaw 202 and defining an elongated channel 3208 configured to receive a cartridge. As described below, locking assembly 3250 is configured to prevent firing of end effector 3200 in both a used cartridge state and a non-used cartridge state, and allows firing of end effector 3200 only when an unused cartridge is properly positioned (i.e., fully seated) in end effector 3200.

[0104] The locking assembly 3250 includes a locking body 3255 (also referred to herein as a “blocking element”) and a locking spring 3270. Figure 27 A top cross-sectional view is shown of the locking body 3255, located inside channel 3208, with the blade 3206 removed. (See diagram) Figures 27 to 28 As shown, the locking body 3255 may be generally "U"-shaped and has a pair of longitudinally extending locking body arms 3260 and a crossbar 3280 interconnecting the proximal ends of the locking body arms 3260. A locking body pivot post 3267 extends laterally outward from the distal end portion of each locking body arm 3260 and is pivotable within a corresponding through-opening formed in a corresponding sidewall of the jaws. The locking body pivot post 3267 cooperates to define a laterally extending pivot axis that extends transversely to the longitudinal axis of the jaws. As described below, this configuration allows the locking body 3255 to pivot relative to the jaws and the blade 3206 between a lowered locked position and an elevated unlocked position, the lowered locked position preventing (i.e., blocking) distal advance of the blade 3206, and the elevated unlocked position allowing distal advance of the blade 3206.

[0105] The middle portion of each locking body arm 3260 includes a laterally inwardly projecting locking protrusion 3265 configured to directly contact a laterally outwardly projecting wing 3207 formed on the corresponding lateral side of the blade 3206. The distal end of each locking body arm 3260 includes a slider engagement protrusion 3262 with an inclined surface 3263 configured to engage the slider 3210a in a cam-like manner when an unused staple cartridge is inserted into the jaws. Although not shown, a locking spring 3270 may be attached to any part of the end effector 3200 to apply a biasing force to the locking body 3255, which forces the locking body 3255 downward toward… Figure 29A The reduced lock position offset is shown.

[0106] Figures 29A to 31 An exemplary operation of the locking assembly 3250 is shown. Figure 29A and Figure 30A The diagram shows a locking body 3255 pivoting downwards in a lowered locked position, biased toward this locked position by a downward force applied to the locking body crossbar 3280 by a locking spring 3270. In the lowered locked position of the locking body 3255, the proximal surface of each locking protrusion 3265 is positioned to directly contact the distal surface of the corresponding side wing 3207 of the blade 3206, thereby preventing the blade 3206 from advancing distally through the end effector 3200.

[0107] Figure 29B and Figure 30B The diagram shows the locking body 3255 pivoting upwards to an elevated unlocked position after an unused staple cartridge has been placed into the jaws. During the placement of the unused staple cartridge, the underside of the slider 3210a, positioned proximally, applies a downward force to the inclined surface 3263 of the slider engagement protrusion 3262, thereby driving the slider engagement protrusion 3262 downwards and pivoting the locking body 3255 relative to the jaws from a lowered position to an elevated position via the pivot post 3267, while simultaneously compressing the locking spring 3270. In the elevated position of the locking body 3255, the locking protrusion 3265 disengages from the side wing 3207 of the blade 3206, thereby allowing distal translation of the blade 3206.

[0108] like Figure 31 As shown, the blade 3206 can now be advanced distally through the lateral gap defined between the locking body arms 3260, such that the flanks 3207 of the blade 3206 advance distally beyond the locking protrusion 3265 and over the top of the slider engagement protrusion 3262. In this way, the blade 3206 can actuate the slider 3210a distally through a firing stroke to deploy the nail into the tissue compressed by the end effector 3200.

[0109] D. Fourth example of an indicative firing locking assembly

[0110] like Figure 32 As shown, end effector 4200 may be substantially similar to end effectors 200, 1200, 2200, and 3200 described above, except as otherwise shown and described below. End effector 4200 may include blade 4206, slider 4210a, and locking assembly 4250, among other features. End effector 4200 also includes a cartridge jaw similar to cartridge jaw 202 and defining an elongated channel 4208 configured to receive a cartridge. As described below, locking assembly 4250 is configured to prevent firing of end effector 4200 in both a used cartridge state and a non-used cartridge state, and to allow firing of end effector 4200 only when an unused cartridge is properly positioned (i.e., fully seated) in end effector 4200.

[0111] The locking assembly 4250 includes a locking body 4255 (also referred to herein as a “blocking element”) and a locking spring 4270. The channel 4208 includes a channel post 4209 to which the locking body 4255 is pivotally coupled. Figure 33AA locking body 4255 is shown, including a post hole 4257, a locking body hook 4259, and a locking body ramp 4263. A channel post 4209 can be positioned within the post hole 4257, thereby allowing the locking body 4255 to pivot. A locking spring 4270 can be positioned between the channel 4208 and the locking body 4255, thereby applying a biasing force to the locking body 4255, thus biasing the locking body 4255 into a locking configuration, such as... Figure 33A As shown. The locking body hook 4259 is positioned to engage the proximal portion of the blade 4206, thereby preventing (i.e., blocking) the distal advance of the blade 4206. The locking hook 4259 may be positioned to intersect the blade plane defined by the blade edge of the blade 4206. The locking body ramp 4263 is positioned to slidably engage with the sliding protrusion 4211 of the slider 4210a.

[0112] Figures 33A to 33C A method for using the locking component 4250 is shown. Figure 33A A locking assembly 4250 is shown in a locked configuration that prevents distal translation of the blade 4206. (See diagram.) Figure 33B As shown, when the slider 4210a is positioned, the optional slider protrusion 4211 slides against the locking body ramp 4263, thereby changing the locking assembly 4250 to the unlocked configuration. Once in the unlocked configuration, the locking body hook 4259 no longer prevents the distal translation of the blade 4206. Furthermore, the locking spring 4270 is in the compressed configuration. Figure 33C A knife 4206 is shown engaging with the slider 4210a and translating beyond the locking body hook 4259. By contacting the locking body ramp 4263 with the knife 4206, the locking body 4255 rotates away, allowing the locking body 4255 to not obstruct the movement of the knife 4206 in the proximal direction, thus enabling the knife 4206 to... Figure 33C Return to position Figure 33A The position shown. Once the tool 4206 is back in the position shown. Figure 33A As shown, the locking assembly 4250 can again prevent the distal translation of the blade 4206 until the new unused staple cartridge with the sliding member 4210a positioned proximally is correctly positioned (i.e., fully seated) in the end effector 4200, as shown. Figure 33B As shown.

[0113] E. Fifth Indicative Firing Lockout Assembly

[0114] like Figures 34 to 35As shown, end effector 5200 may be substantially similar to end effectors 200, 1200, 2200, 3200, and 4200 described above, except as otherwise shown and described below. End effector 5200 includes a blade 5206 and a locking assembly 5250, as well as other features. End effector 5200 also includes a cartridge jaw similar to cartridge jaw 202 and defining an elongated channel 5208 configured to receive a cartridge. As described below, locking assembly 5250 is configured to prevent firing of end effector 5200 in both a used cartridge state and a non-used cartridge state, and allows firing of end effector 5200 only when an unused cartridge is properly positioned (i.e., fully seated) in end effector 5200.

[0115] The locking assembly 5250 includes two resilient locking bodies 5255 (also referred to herein as “blockers”) positioned on opposite lateral sides of the channel 5208 and having a configuration mirror-image of a vertical plane extending along the longitudinal axis of the jaws. Each locking body 5255 includes a hook-shaped laterally outward end and a laterally inward end, the hook-shaped laterally outward end being anchored within a corresponding vertical slot 5209 formed in a corresponding sidewall of the jaws, the laterally inward end having a distally extending curved sliding engagement finger 5260 and a laterally inwardly extending linear blade engagement finger 5265 below the sliding engagement finger 5260. As detailed below, the laterally inner end of each locking body 5255 can be elastically deflected (i.e., flexed) relative to its laterally outer end between a neutral locked position and a deflected unlocked position, thereby respectively preventing (i.e., blocking) or allowing the blade 5206 to translate distally through the end effector 5200. The locking bodies 5255 are structurally independent of each other but are configured to cooperate in operation, such that the locking bodies 5255 simultaneously change between the neutral locked position and the deflected unlocked position.

[0116] Each sliding engagement finger 5260 may be rounded as shown, such that when an unused staple cartridge is placed in the jaws, the lower and / or proximal end of the sliding member 5210a can slidably contact the sliding engagement finger 5260. The lower portion of each locking body 5255 (including the blade engagement finger 5265) is positioned within a corresponding opening, illustrated as a recess 5211 formed in the base plate of the jaws. Each recess 5211 is defined by a proximal end shoulder wall and a distal end shoulder wall, which limit the range of deflection angles of the laterally inward end relative to its laterally outward end of the corresponding locking body 5255. Specifically, each blade engagement finger 5265 is configured to abut the corresponding distal end shoulder wall when the locking body 5255 is in the neutral locked position, and is configured to abut the corresponding proximal end shoulder wall when the locking body 5255 is in the deflected unlocked position.

[0117] Figures 36A to 36C An exemplary operation of the locking assembly 5250 is shown. Figure 36A The blade 5206 is shown in its proximal original position, and the jaws of the cartridge are shown without any unused staple cartridge, such that each locking body 5255 is in its neutral locked position. In this position, the blade engaging fingers 5265 extend laterally across the channel 5208 such that their end tips face each other, thereby preventing (i.e., blocking) the blade 5206 from advancing distally through the end effector 5200.

[0118] like Figure 36B As shown, when the unused staple cartridge is placed in the jaws of the end effector 5200, the proximal end of the proximally positioned slider 5210a directly contacts the slider engagement finger 5260 of the locking body 5255 and applies a proximal guiding force to this slider engagement finger. This engagement forces the laterally inward end of each locking body 5255 (including the slider engagement finger 5260 and the blade engagement finger 5265) to deflect proximally at an angle relative to its corresponding laterally outward end, which remains fixed in the corresponding jaw wall channel 5209, thereby providing the locking body 5255 in the deflected unlocked position. The blade engagement fingers 5265 now face the proximal shoulder wall of the recess 5211, so that their laterally inward end ends no longer obstruct the distal advance of the blade 5206.

[0119] like Figure 36CAs shown, with both locking bodies 5255 in the deflected unlocked position, the blade 5206 is allowed to advance distally to engage the slider 5210a and actuate the slider through the distal firing stroke. When the blade 5206 has fully advanced distally beyond the locking body 5255, the locking body 5255 elastically returns to its neutral locked position. After completing the distal firing stroke, the blade 5206 can retract proximally, causing its proximal end to engage the bent blade engagement finger 5260, thereby pushing the locking body 5255 back to the deflected unlocked position, allowing the blade 5206 to return to its neutral locked position. Figure 36A The proximal original position. Once the knife 5206 is back in position. Figure 36A As shown, the locking body 5255 returns to its neutral locking state to prevent the distal translation of the blade 5206 again, until the new unused staple cartridge with the sliding member 5210a positioned proximally is correctly positioned (i.e., fully seated) in the end effector 5200, as shown. Figure 36B As shown.

[0120] As mentioned above, each locking body 1255, 2255, 3255, 4255, 5255 may also be referred to as a "blocking element". Similarly, it should be understood that the term "blocking element" may also be used in place of the term "locking element" when referring to other components of the locking assembly 1250, 2250, 3250, 4250, 5250.

[0121] III. Examples of Combinations

[0122] The following examples illustrate various non-exhaustive ways in which the teachings herein can be combined or applied. It should be understood that the following examples are not intended to limit the scope of any claims that may be provided at any time in this patent application or a subsequent filing thereof. No disclaimer is intended. The following examples are provided merely for illustrative purposes. It is contemplated that the various teachings herein may be arranged and applied in a variety of other ways. It is also contemplated that some variations may omit certain features mentioned in the following examples. Therefore, none of the aspects or features mentioned below should be considered definitive unless otherwise expressly indicated by the inventor or a successor with an interest in the inventor at a later date. If any claim set forth in this patent application or a subsequent filing related to this patent application includes additional features beyond those mentioned below, such additional features should not be presumed to have been added for any reason related to patentability.

[0123] Example 1

[0124] An apparatus (1000) comprising: (a) a shaft (600A); and (b) an end effector (1200, 2200) operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge (210) having a slide (1210a, 2210a) and a plurality of staples, the slide being actuable to deploy the staples into tissue held by the end effector, wherein the end effector comprises: (i) a blade (1206, 2206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slide, such that the end effector sutures and cuts the tissue, (ii) anvil jaws (204, 1204) configured to deform the staples deployed from the staple cartridge, and (iii) cartridge jaws (1208, 2208). The jaws are configured to engage with the anvil jaws to grip the tissue; and (iv) a stop (1255, 2255) connected to the jaws, wherein the stop is vertically translatable relative to the jaws and the blade between a raised position and a lowered position, wherein in the lowered position, the lower end of the stop is positioned below the lower end of the blade, wherein the stop in the raised position is configured to directly contact the blade and thereby prevent the blade from being advanced distally through the end effector, and the stop in the lowered position is configured to allow the blade to be advanced distally through the end effector, wherein the stop is configured to take the raised position when there is no unused staple cartridge in the jaws, and to take the lowered position when there is an unused staple cartridge in the jaws.

[0125] Example 2

[0126] According to the device of Embodiment 1, the blocking member (1255, 2255) is configured to be able to translate from the raised position to the lowered position in response to an unused staple cartridge (210) being placed in the cartridge jaws.

[0127] Example 3

[0128] According to any one of the foregoing embodiments, the device wherein the blocking member (1255, 2255) includes an upward-facing surface (1262, 2263) configured to directly contact the underside of the sliding member of the unused staple cartridge when the unused staple cartridge is placed in the jaws.

[0129] Example 4

[0130] According to any one of the foregoing embodiments, the device wherein the blocking member (1255, 2255) is biased toward the raised position such that the blocking member is configured to automatically change from the lowered position to the raised position after the blade has been advanced distally beyond the blocking member.

[0131] Example 5

[0132] According to the device of embodiment 4, the end effector further includes a stop spring (1270, 2270) configured to elastically bias the stop toward the raised position.

[0133] Example 6

[0134] According to the device of embodiment 5, the blocking spring (1270, 2270) is adjacent to the downward-facing surface of the blocking member.

[0135] Example 7

[0136] According to any one of the foregoing embodiments, the device, wherein the blocking member (1255, 2255) includes a base (1280, 2280) and a pair of arms (1260, 2260) extending upward from the base.

[0137] Example 8

[0138] According to the device of embodiment 7, when the blocking member (1255, 2255) is in the raised position, the base is configured to abut the knife and thereby prevent distal advance of the knife, wherein when the blocking member is in the lowered position, the knife is configured to advance distally between the arms and over the base.

[0139] Example 9

[0140] According to any one of the foregoing embodiments, the lower portion of the jaws (1208, 2208) includes an opening (1209, 2209), wherein the blocking member (1255, 2255) is configured to be able to translate vertically within the opening.

[0141] Example 10

[0142] According to any one of the foregoing embodiments, the opening (1209, 2209) includes a through opening extending through the bottom plate of the jaw jaw.

[0143] Example 11

[0144] An apparatus (1000) comprising: (a) a shaft (600A) defining a longitudinal axis; and (b) an end effector (3200) operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge (210) having a slide (3210a) and a plurality of staples, the slide being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes: (i) a blade (3206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slide, such that the end effector sutures and cuts the tissue; (ii) an anvil jaws (204) configured to deform the staples deployed from the staple cartridge; and (iii) a cartridge jaws (3208) configured to engage with the anvil jaws to clamp. Holding the organization, and (iv) a blocking member (3255) pivotally connected to the jaws about a lateral pivot axis extending transversely to the longitudinal axis, wherein the blocking member is pivotable relative to the jaws and the blade between a raised position and a lowered position, wherein the blocking member in the lowered position is configured to directly contact a first lateral side and a second lateral side (3207) of the blade and thereby prevent the blade from advancing distally through the end effector, and the blocking member in the raised position is configured to disengage from the first lateral side and the second lateral side of the blade and thereby allow the blade to advance distally through the end effector, wherein the blocking member is configured to take the lowered position when there is no unused staple cartridge in the jaws, and to take the raised position when there is an unused staple cartridge in the jaws.

[0145] Example 12

[0146] According to the device of embodiment 11, the blocking member is biased toward the lowered position.

[0147] Example 13

[0148] The device according to any one of embodiments 11 to 12, wherein the blocking member includes a pair of pivot columns (3267) defining the lateral pivot axis.

[0149] Example 14

[0150] According to any one of embodiments 11 to 13, the device includes a first protrusion and a second protrusion (3265) configured to directly contact the first lateral side and the second lateral side of the blade when the blocking member is in the lowered position, thereby preventing the distal advancement of the blade.

[0151] Example 15

[0152] The device according to any one of embodiments 11 to 14, wherein the blocking member includes a pair of interconnecting arms (3260), wherein the blade is configured to advance distally through a lateral gap defined between the interconnecting arms when the blocking member is in the raised position.

[0153] Example 16

[0154] An apparatus (1000) comprising: (a) a shaft (600A); and (b) an end effector (5200) operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge (210) having a slide (5210a) and a plurality of staples, the slide being actuable to deploy the staples into tissue held by the end effector, wherein the end effector comprises: (i) a blade (5206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slide, such that the end effector sutures and cuts the tissue; (ii) an anvil jaws (204) configured to deform the staples deployed from the staple cartridge; and (iii) a cartridge jaws (5208) configured to engage with the anvil jaws. (iv) A stop (5255) coupled to the jaws of the cartridge, wherein the stop includes a fixed laterally external end portion and a free laterally internal end portion, wherein the free laterally internal end portion is configured to resiliently deflect relative to the fixed laterally external end portion between a neutral position and a deflected position, wherein the stop in the neutral position is configured to directly contact the blade and thereby prevent the blade from advancing distally through the end effector, and the stop in the deflected position is configured to allow the blade to advance distally through the end effector, wherein the stop is configured to take the neutral position when there is no unused cartridge in the jaws of the cartridge, and to take the deflected position when there is an unused cartridge in the jaws of the cartridge.

[0155] Example 17

[0156] According to the device of embodiment 16, the blocking member (5255) in the neutral position extends laterally across at least a portion of the elongated channel defined by the jaws.

[0157] Example 18

[0158] According to any one of Embodiments 16 to 17, the device wherein the lateral internal end portion includes a first protrusion (5260) and a second protrusion (5265), the first protrusion being configured to contact a slider of an unused staple cartridge disposed in the jaws of the jaws, and the second protrusion being configured to contact the blade.

[0159] Example 19

[0160] According to any one of embodiments 16 to 18, the device includes a recess (5211) having an end wall configured to limit the deflection angle range of the blocking member.

[0161] Example 20

[0162] According to any one of embodiments 16 to 19, the device includes a first blocking member (5255) configured to contact a first lateral side of the blade in the neutral position, wherein the end effector further includes a second blocking member (5255) laterally opposite the first blocking member and configured to contact a second lateral side of the blade in the neutral position.

[0163] The following clauses also relate to various non-exhaustive ways in which the teachings of this document can be combined or applied. 1. An apparatus comprising:

[0164] (a) axis; and

[0165] (b) An end effector operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge having a slider and a plurality of staples, the slider being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes:

[0166] (i) a blade configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue.

[0167] (ii) Anvil jaws configured to deform the staples deployed from the staple cartridge.

[0168] (iii) a clamp jaw, the clamp jaw being configured to engage with the anvil jaw to clamp the tissue, and

[0169] (iv) A blocking member connected to the jaws, wherein the blocking member is vertically translatable relative to the jaws and the blade between a raised position and a lowered position, wherein in the lowered position, the lower end of the blocking member is positioned below the lower end portion of the blade.

[0170] In the raised position, the blocking member is configured to directly contact the blade and thereby prevent the blade from advancing distally through the end effector, while in the lowered position, the blocking member is configured to allow the blade to advance distally through the end effector.

[0171] The blocking member is configured to take the raised position when there are no unused staple cartridges placed in the clamp jaws, and to take the lowered position when there are unused staple cartridges placed in the clamp jaws.

[0172] 2. The device according to Clause 1, wherein the blocking member is configured to translate from the raised position to the lowered position in response to an unused staple cartridge being placed in the cartridge jaws.

[0173] 3. The device according to Clause 1, wherein the blocking member includes an upward-facing surface configured to directly contact the underside of the sliding member of the unused staple cartridge when the unused staple cartridge is placed in the jaws.

[0174] 4. The device according to Clause 1, wherein the blocking member is biased toward the raised position such that the blocking member is configured to automatically change from the lowered position to the raised position after the blade has been advanced distally beyond the blocking member.

[0175] 5. The device according to Clause 4, wherein the end effector further includes a stop spring configured to resiliently bias the stop toward the raised position.

[0176] 6. The device according to Clause 5, wherein the blocking spring is adjacent to the downward-facing surface of the blocking member.

[0177] 7. The device according to Clause 1, wherein the blocking member includes a base and a pair of arms extending upward from the base.

[0178] 8. The device according to Clause 7, wherein when the blocking member is in the raised position, the base is configured to abut the blade and thereby prevent distal advance of the blade, wherein when the blocking member is in the lowered position, the blade is configured to advance distally between the arms and over the base.

[0179] 9. The device according to Clause 1, wherein the lower portion of the jaw includes an opening, wherein the blocking member is configured to be vertically translatable within the opening.

[0180] 10. The device according to Clause 1, wherein the opening includes a through opening extending through the base plate of the jaw jaws.

[0181] 11. An apparatus, the apparatus comprising:

[0182] (a) An axis that defines a longitudinal axis; and

[0183] (b) An end effector operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge having a slider and a plurality of staples, the slider being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes:

[0184] (i) a blade configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue.

[0185] (ii) Anvil jaws configured to deform the staples deployed from the staple cartridge.

[0186] (iii) a clamp jaw, the clamp jaw being configured to engage with the anvil jaw to clamp the tissue, and

[0187] (iv) A blocking member, the blocking member being pivotally connected to the jaws about a lateral pivot axis extending transversely to the longitudinal axis, wherein,

[0188] The blocking member is pivotable relative to the jaws and the blade between a raised position and a lowered position.

[0189] In the lowered position, the stop is configured to directly contact the first and second lateral sides of the blade and thereby prevent the blade from advancing distally through the end effector, and in the raised position, the stop is configured to disengage from the first and second lateral sides of the blade and thereby allow the blade to advance distally through the end effector. The stop is configured to be able to take the lowered position when there is no unused staple cartridge in the jaws, and to take the raised position when there is an unused staple cartridge in the jaws. 12. The device according to claim 11, wherein the stop is biased toward the lowered position.

[0190] 13. The device according to Clause 11, wherein the blocking member includes a pair of pivot columns defining the lateral pivot axis.

[0191] 14. The device according to Clause 11, wherein the blocking member includes a first protrusion and a second protrusion, the first protrusion and the second protrusion being configured to directly contact the first lateral side and the second lateral side of the blade when the blocking member is in the lowered position, thereby preventing distal advance of the blade.

[0192] 15. The device according to Clause 11, wherein the blocking member comprises a pair of interconnecting arms, wherein,

[0193] The blade is configured to advance distally through the lateral gap defined between the interconnecting arms when the stop is in the raised position.

[0194] 16. An apparatus, the apparatus comprising:

[0195] (a) axis; and

[0196] (b) An end effector operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge having a slider and a plurality of staples, the slider being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes:

[0197] (i) a blade configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue.

[0198] (ii) Anvil jaws configured to deform the staples deployed from the staple cartridge.

[0199] (iii) a clamp jaw, the clamp jaw being configured to engage with the anvil jaw to clamp the tissue, and

[0200] (iv) A blocking member coupled to the jaws, wherein the blocking member includes a fixed laterally external end portion and a free laterally internal end portion, wherein the free laterally internal end portion is configured to resiliently deflect relative to the fixed laterally external end portion between a neutral position and a deflected position.

[0201] The blocking member in the neutral position is configured to directly contact the blade and thereby prevent the blade from advancing distally through the end effector, while the blocking member in the deflected position is configured to allow the blade to advance distally through the end effector.

[0202] The blocking member is configured to take the neutral position when there are no unused staple cartridges placed in the clamp jaws, and to take the deflection position when there are unused staple cartridges placed in the clamp jaws.

[0203] 17. The device according to Clause 16, wherein the blocking member in the neutral position extends laterally across at least a portion of the elongated channel defined by the jaws.

[0204] 18. The device according to Clause 16, wherein the lateral internal end portion includes a first protrusion and a second protrusion, the first protrusion being configured to contact a slide of an unused staple cartridge disposed in the jaws of the jaws, and the second protrusion being configured to contact the blade.

[0205] 19. The device according to Clause 16, wherein the jaw includes a recess having an end wall configured to limit the deflection angle range of the stop.

[0206] 20. The device according to Clause 16, wherein the blocking member includes a first blocking member configured to contact a first lateral side of the blade in the neutral position, wherein the end effector further includes a second blocking member laterally opposite the first blocking member and configured to contact a second lateral side of the blade in the neutral position.

[0207] IV. Miscellaneous

[0208] It should be understood that any or more of the teachings, expressions, types, examples, etc., described herein may be combined with any or more of the other teachings, expressions, types, examples, etc., described herein. Therefore, the aforementioned teachings, expressions, types, examples, etc., should not be considered separate from each other. Various suitable ways in which the teachings herein can be combined will be apparent to those skilled in the art. Such modifications and variations are intended to be included within the scope of the claims.

[0209] Furthermore, any one or more of the teachings herein may be combined with any one or more of the teachings disclosed in the following patent applications: U.S. Patent Application No. END9622USNP1, entitled "Surgical Stapler with Firing Lockout Feature Coupled to End Effector Knife," filed on the same date as this application; and / or U.S. Patent Application No. END9622USNP3, entitled "Surgical Stapler with Firing Lockout Feature Coupled to End Effector Retainer," filed on the same date as this application. The disclosure of each of the foregoing patent references is incorporated herein by reference in its entirety.

[0210] It should be understood that any patent, patent publication, or other public material allegedly incorporated herein by reference, whether in whole or in part, is incorporated only to the extent that the incorporated material does not conflict with the existing definitions, statements, or other public materials listed in this disclosure. Therefore, and to the extent necessary, the disclosures expressly listed herein replace any conflicting material incorporated herein by reference. Any material, or part thereof, allegedly incorporated herein by reference but conflicting with the existing definitions, statements, or other public materials listed herein, will be incorporated only to the extent that the incorporated material does not conflict with the existing public materials.

[0211] The aforementioned devices can be applied to both traditional medical treatments and surgeries performed by medical professionals and robot-assisted medical treatments and surgeries. By way of example only, the various teachings herein can be readily incorporated into robotic surgical systems, such as those provided by Auris Health, Inc. (Redwood City, CA) or Intuitive Surgical, Inc. (Sunnyvale, California).

[0212] Devices of the types described above may be designed for single-use and disposal, or they may be designed for multiple uses. In either or both cases, these types may be repaired for reuse after at least one use. Repair may include any combination of the following steps: disassembling the device, then cleaning or replacing specific parts, and subsequently reassembling. Specifically, some types of devices may be disassembled, and any combination may be used to selectively replace or remove any number of specific parts or portions of the device. While cleaning and / or replacing specific components, some types of devices may be reassembled at a repair facility or by the user prior to surgery for subsequent use. Those skilled in the art will appreciate that device repair can utilize a variety of techniques for disassembly, cleaning / replacement, and reassembly. The use of such techniques and the resulting repaired devices are within the scope of this application.

[0213] By way of example only, the types described herein can be sterilized before and / or after surgery. In one sterilization technique, the device is placed in a closed and sealed container such as a plastic bag or a TYVEK bag. The container and device can then be placed in a radiation field that can penetrate the container, such as gamma radiation, X-rays, or high-energy electrons. The radiation kills bacteria on the device and in the container. The sterilized device can then be stored in a sterile container for later use. Any other techniques known in the art can also be used to sterilize the device, including but not limited to beta or gamma radiation, ethylene oxide, or vapor.

[0214] While various embodiments of the invention have been shown and described, further improvements to the methods and systems described herein can be achieved by suitable modifications made by those skilled in the art without departing from the scope of the invention. Several such possible modifications have been mentioned, and other modifications will be apparent to those skilled in the art. For example, the examples, types, geometries, materials, dimensions, ratios, steps, etc., discussed above are illustrative and not essential. Therefore, the scope of the invention should be considered in accordance with the following claims and should be understood as not being limited to the details of the structures and operations shown and described in the specification and drawings.

Claims

1. An apparatus (1000), the apparatus comprising: (a) Shaft (600A); and (b) an end effector (1200, 2200), said end effector being operatively connected to the shaft. The end effector is configured to receive a staple cartridge (210) having slides (1210a, 2210a) and a plurality of staples, the slides being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes: (i) a blade (1206, 2206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue. (ii) Anvil jaws (204, 1204), said anvil jaws being configured to deform the staples deployed from the staple cartridge. (iii) Grip jaws (1208, 2208), said grip jaws being configured to engage with said anvil jaws to clamp the tissue, and (iv) A blocking member (1255, 2255) connected to the jaws, wherein the blocking member is vertically translatable relative to the jaws and the blade between a raised position and a lowered position, wherein in the lowered position, the lower end of the blocking member is positioned below the lower end portion of the blade. In the raised position, the blocking member is configured to directly contact the blade and thereby prevent the blade from advancing distally through the end effector, while in the lowered position, the blocking member is configured to allow the blade to advance distally through the end effector. The blocking member is configured to take the raised position when there are no unused staple cartridges placed in the clamp jaws, and to take the lowered position when there are unused staple cartridges placed in the clamp jaws.

2. The device according to claim 1, wherein, The blocking elements (1255, 2255) are configured to translate from the raised position to the lowered position in response to an unused staple cartridge (210) being placed in the cartridge jaws.

3. The device according to any one of the preceding claims, wherein, The blocking member (1255, 2255) includes an upward-facing surface (1262, 2263) configured to directly contact the underside of the slider of the unused staple cartridge when the unused staple cartridge is placed in the jaws of the cartridge.

4. The device according to any one of the preceding claims, wherein, The blocking member (1255, 2255) is biased toward the raised position such that the blocking member is configured to automatically change from the lowered position to the raised position after the blade has been advanced distally beyond the blocking member.

5. The device according to claim 4, wherein, The end effector also includes a stop spring (1270, 2270) configured to elastically bias the stop toward the raised position.

6. The device according to claim 5, wherein, The blocking spring (1270, 2270) is adjacent to the downward-facing surface of the blocking element.

7. The device according to any one of the preceding claims, wherein, The blocking member (1255, 2255) includes a base (1280, 2280) and a pair of arms (1260, 2260) extending upward from the base.

8. The device according to claim 7, wherein, When the blocking member (1255, 2255) is in the raised position, the base is configured to abut the knife and thereby prevent the knife from advancing distally, wherein when the blocking member is in the lowered position, the knife is configured to advance distally between the arms and above the base.

9. The device according to any one of the preceding claims, wherein, The lower portion of the jaws (1208, 2208) includes openings (1209, 2209), wherein the blocking members (1255, 2255) are configured to be able to translate vertically within the openings.

10. The device according to any one of the preceding claims, wherein, The openings (1209, 2209) include through openings extending through the bottom plate of the jaws.

11. An apparatus (1000), said apparatus comprising: (a) Axis (600A), which defines a longitudinal axis; and (b) An end effector (3200), said end effector being operatively connected to the shaft, wherein, The end effector is configured to receive a staple cartridge (210) having a slider (3210a) and a plurality of staples, the slider being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes: (i) a blade (3206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue. (ii) Anvil jaws (204) configured to deform the staples deployed from the staple cartridge. (iii) a clamp jaw (3208), said clamp jaw being configured to engage with the anvil jaw to clamp the tissue, and (iv) A blocking member (3255) pivotally connected to the jaws about a lateral pivot axis extending transversely to the longitudinal axis, wherein the blocking member is pivotable relative to the jaws and the blade between a raised position and a lowered position. In the lowered position, the blocking member is configured to directly contact the first and second lateral sides (3207) of the blade, thereby preventing the blade from advancing distally through the end effector. In the raised position, the blocking member is configured to disengage from the first and second lateral sides of the blade, thereby allowing the blade to advance distally through the end effector. The blocking member is configured to take the lowered position when there are no unused staple cartridges placed in the clamp jaws, and to take the raised position when there are unused staple cartridges placed in the clamp jaws.

12. The device according to claim 11, wherein, The blocking element is offset toward the lowered position.

13. The device according to any one of claims 11 to 12, wherein, The blocking element includes a pair of pivot posts (3267) that define the lateral pivot axis.

14. The device according to any one of claims 11 to 13, wherein, The blocking member includes a first protrusion and a second protrusion (3265), the first protrusion and the second protrusion being configured to directly contact the first lateral side and the second lateral side of the knife when the blocking member is in the lowered position, thereby preventing the distal advancement of the knife.

15. The device according to any one of claims 11 to 14, wherein, The blocking member includes a pair of interconnecting arms (3260), wherein the blade is configured to advance distally through a lateral gap defined between the interconnecting arms when the blocking member is in the raised position.

16. An apparatus (1000), said apparatus comprising: (a) Shaft (600A); and (b) An end effector (5200) operatively coupled to the shaft, wherein the end effector is configured to receive a staple cartridge (210) having a slide (5210a) and a plurality of staples, the slide being actuable to deploy the staples into tissue held by the end effector, wherein the end effector includes: (i) a blade (5206) configured to cut the tissue, wherein the blade is distally advanced through the staple cartridge to actuate the slider, causing the end effector to suture and cut the tissue. (ii) Anvil jaws (204) configured to deform the staples deployed from the staple cartridge. (iii) a clamp jaw (5208), said clamp jaw being configured to engage with the anvil jaw to clamp the tissue, and (iv) A blocking member (5255) connected to the jaws, wherein the blocking member includes a fixed laterally external end portion and a free laterally internal end portion, wherein the free laterally internal end portion is configured to resiliently deflect relative to the fixed laterally external end portion between a neutral position and a deflected position. The blocking member in the neutral position is configured to directly contact the blade and thereby prevent the blade from advancing distally through the end effector, while the blocking member in the deflected position is configured to allow the blade to advance distally through the end effector. The blocking member is configured to take the neutral position when there are no unused staple cartridges placed in the clamp jaws, and to take the deflection position when there are unused staple cartridges placed in the clamp jaws.

17. The device according to claim 16, wherein, The blocking member (5255) in the neutral position extends laterally across at least a portion of the elongated channel defined by the jaws.

18. The device according to any one of claims 16 to 17, wherein, The lateral internal end portion includes a first protrusion (5260) and a second protrusion (5265), the first protrusion being configured to contact the sliding element of an unused staple cartridge disposed in the jaws of the jaws, and the second protrusion being configured to contact the blade.

19. The device according to any one of claims 16 to 18, wherein, The jaws include a recess (5211) with an end wall configured to limit the deflection angle range of the stop.

20. The device according to any one of claims 16 to 19, wherein, The blocking member includes a first blocking member (5255) configured to contact a first lateral side of the blade in the neutral position, wherein the end effector further includes a second blocking member (5255) laterally opposite the first blocking member and configured to contact a second lateral side of the blade in the neutral position.

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