Anastomosis execution assembly and anastomat

Abstract

The invention discloses an anastomosis execution assembly and an anastomat. The anastomosis execution assembly comprises a forceps body assembly, a connecting piece and an elastic piece. The pincer body assembly comprises a first pincer body and a second pincer body, and the second pincer body is configured to be capable of pivoting relative to the first pincer body so as to close or open the pincer body assembly; the connecting piece is arranged to be connected with the clamp body assembly; the elastic piece comprises a first connecting part and a second connecting part, the first connecting part is connected with the connecting piece, and the second connecting part is connected with the second clamp body; and the second connecting part is configured to apply an elastic force to the second clamp body, so that the second clamp body pivots relative to the first clamp body to open the clamp body assembly. According to the anastomat provided by the invention, the second forceps body can move away from the first forceps body under the action of the elastic force of the elastic piece to be separated from the first forceps body, so that the far-end actuator is opened to a proper angle to be enough to release target tissues.

Description

Technical Field

[0001] This disclosure relates to the field of medical devices, specifically to an anastomosis execution component and an anastomosis device. Background Technology

[0002] In surgical treatment, various staplers are widely used, such as skin staplers, digestive tract staplers (esophagus, gastrointestinal tract, etc.), and laparoscopic staplers. These staplers are medical devices that replace traditional manual suturing. Due to the development of modern technology and improvements in manufacturing techniques, the various staplers currently used in clinical practice have advantages such as fast and accurate suturing, simple operation, less bleeding, and few side effects and surgical complications. They can be used to remove lesions and are therefore widely used both domestically and internationally.

[0003] Existing laparoscopic anastomosis devices have a set of elastic elements directly placed between the first and second clamps. For example, the second clamp includes a staple cartridge, and a set of elastic elements is placed on the upper surface of the proximal end of the staple cartridge. The elastic force of the elastic elements is used to open the first and second clamps. When the staple cartridge is removed from the staple cartridge seat, the elastic elements are removed along with the staple cartridge assembly. When the staple cartridge is reinstalled, the elastic elements are not easy to install in the correct position, thus causing the opening and closing between the first and second clamps to fail. Summary of the Invention

[0004] At least one embodiment of this disclosure provides a matching execution assembly, which includes a clamping body assembly, a connector, and an elastic member. The clamping body assembly includes a first clamping body and a second clamping body, the second clamping body being configured to pivot relative to the first clamping body to close or open the clamping body assembly; the connector is configured to be connected to the clamping body assembly; the elastic member includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the connector, the second connecting portion being connected to the second clamping body, and the second connecting portion being configured to apply an elastic force to the second clamping body to cause the second clamping body to pivot relative to the first clamping body to open the clamping body assembly.

[0005] For example, an embodiment of the present disclosure provides a matching execution component that further includes a closing mechanism, the closing mechanism being configured such that: when the closing mechanism applies a driving force to the second clamp to drive the second clamp to pivot closer to the first clamp, the elastic member undergoes elastic deformation and applies an elastic force to the second clamp, the driving force overcoming the elastic force to close the clamp assembly; when the closing mechanism stops applying the driving force to the second clamp, the second clamp pivots away from the first clamp under the action of the elastic force, thereby opening the clamp assembly.

[0006] For example, in a matching execution component provided in an embodiment of this disclosure, the connector includes a first groove, the shape of which matches the shape of the first connecting portion of the elastic member, the first connecting portion being disposed in the first groove; the second connecting portion of the elastic member is configured to pivot with the second clamping body to cause the elastic member to undergo elastic deformation and apply the elastic force to the second clamping body.

[0007] For example, in a fitting execution assembly provided in one embodiment of this disclosure, the connector is disposed at the proximal end of the clamping body assembly and connected to the second clamping body, and the first groove is disposed on the upper surface of the connector near the first clamping body; when the clamping body assembly is open, the second connecting portion of the elastic member is located at a first position away from the first clamping body; when the clamping body assembly is closed, the second connecting portion of the elastic member is located at a second position near the first clamping body.

[0008] For example, in a matching execution component provided in one embodiment of this disclosure, the elastic element further includes at least two connected bending portions, adjacent bending portions having an included angle and being rotatably connected, and the two ends of the at least two bending portions being respectively connected to the first connecting portion and the second connecting portion.

[0009] For example, in a matching execution component provided in one embodiment of this disclosure, the at least two bending portions include a second bending portion and a third bending portion connected together, with the second bending portion and the third bending portion having the included angle between them, and the first connecting portion, the second bending portion, the third bending portion and the second connecting portion being connected in sequence; the connector further includes a second groove and a first abutting surface, the second groove extending from the distal end of the first groove toward the bottom surface of the connector, the first abutting surface extending from the bottom end of the second groove toward the upper surface of the distal end of the connector, the second bending portion being disposed in the second groove, and when the clamp assembly is closed, the third bending portion abuts against the first abutting surface.

[0010] For example, in a matching execution component provided in an embodiment of this disclosure, when the clamp assembly is in the closed state, the included angle between the second bent portion and the third bent portion is a first included angle, and the first included angle is an acute angle; when the clamp assembly is in the open state, the included angle between the second bent portion and the third bent portion is a second included angle, the second included angle is an acute angle, and the value of the second included angle is greater than the value of the first included angle.

[0011] For example, in a matching execution component provided in one embodiment of this disclosure, the value of the first included angle is between 20 degrees and 30 degrees; and the value of the second included angle is between 35 degrees and 45 degrees.

[0012] For example, in a matching execution component provided in one embodiment of this disclosure, the radial width of the elastic element is not greater than 1 / 3 of the radial width of the second clamp.

[0013] For example, in a matching execution component provided in an embodiment of this disclosure, the at least two bending portions further include a first bending portion connected to the second bending portion and a fourth bending portion connected to the third bending portion. The first bending portion includes a first connecting portion of the elastic member, and the fourth bending portion includes a second connecting portion of the elastic member. The first bending portion is configured to extend along the upper surface of the connector near the first clamp body and extend from the second bending portion toward the proximal end or the distal end of the connector.

[0014] For example, in an embodiment of the anastomosis execution assembly provided in this disclosure, the second clamp is a staple cartridge assembly, and the first clamp is a staple abutment; the staple cartridge assembly includes a staple cartridge seat and a staple cartridge detachably mounted on the staple cartridge seat, the staple cartridge being configured to receive anastomotic staples; the second connecting portion of the elastic member is connected to the staple cartridge seat.

[0015] For example, in a matching execution component provided in one embodiment of this disclosure, the staple cartridge seat includes a bottom surface facing the staple cartridge, a sidewall connected to and intersecting the bottom surface of the staple cartridge seat, and a protrusion, the upper surface of the protrusion facing away from the bottom surface of the staple cartridge seat; the second connecting portion of the elastic member abuts against the upper surface of the protrusion.

[0016] For example, in a fitting execution assembly provided in one embodiment of this disclosure, the protrusion is connected to the sidewall and protrudes from the sidewall toward the inside of the sidewall; and the protrusion has a longitudinal gap with the bottom surface of the staple cartridge seat, the longitudinal gap being configured to accommodate the proximal end of the staple cartridge.

[0017] For example, in a matching execution component provided in one embodiment of this disclosure, the protrusion is connected to the bottom surface and side wall of the staple cartridge seat, respectively, and is configured such that when the staple cartridge is installed in the staple cartridge seat, the protrusion is located near the staple cartridge.

[0018] At least one embodiment of this disclosure provides a stapler, which includes a handle portion, a cannula assembly, and a stapler execution component provided in this disclosure, connected in sequence.

[0019] The stapler disclosed herein has an elastic element disposed on a connector. The second clamp body can pivot away from the first clamp body and separate from the first clamp body under the elastic force of the elastic element, thereby opening the clamp body assembly to a suitable angle to clamp the tissue at a suitable angle or to release the target tissue sufficiently after the stapler is completed. There is no need to repeatedly install the elastic element. When the staple cartridge is disassembled, the first connecting part of the original elastic element is reliably connected to the connector and the second connecting part is connected to the second clamp body, so that the second clamp body is separated from the first clamp body to a suitable angle, thereby improving the reliability and stability of the stapler. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0021] Figure 1 This is a partial structural schematic diagram of a stapler provided in one embodiment of the present disclosure;

[0022] Figure 2 This is a partial structural diagram of a stapler in an unclosed state according to an embodiment of the present disclosure;

[0023] Figure 3 This is a partial structural schematic diagram of a stapler in a closed state according to an embodiment of this disclosure;

[0024] Figure 4 A partial structural diagram of a stapler in the open state is provided in one embodiment of this disclosure. Figure 4 exist Figure 2 The side wall connection of the staple cartridge seat is further shown on the basis of this.

[0025] Figure 5 yes Figure 2 A schematic diagram of a portion of the stapler shown from a top view;

[0026] Figure 6 yes Figure 5 A magnified view of the area within the dashed box;

[0027] Figure 7 This is a schematic diagram of the structure of a connector of a stapler provided in one embodiment of the present disclosure;

[0028] Figure 8 This is a schematic diagram of the structure of the elastic element of a stapler according to an embodiment of the present disclosure;

[0029] Figure 9 This is a partial schematic diagram of a matching execution component including a connector and a drive rod according to an embodiment of the present disclosure;

[0030] Figure 10 This is a schematic diagram of a stapler provided in an embodiment of the present disclosure, in which the staple cartridge is installed at an angle under the constraint of a protrusion;

[0031] Figure 11 This is a partial structural schematic diagram of a stapler including another elastic element provided in another embodiment of this disclosure;

[0032] Figure 12 This is a partial structural schematic diagram of a stapler including another type of protrusion provided in another embodiment of this disclosure. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0035] The accompanying drawings in this disclosure are not drawn to scale, and the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only structural schematic diagrams.

[0036] As used in this disclosure, the characteristics such as "parallel," "perpendicular," and "identical" include the strict meanings of "parallel," "perpendicular," and "identical," as well as cases where "substantially parallel," "substantially overlapping," and "substantially identical" include a certain degree of error, taking into account measurement and errors associated with the measurement of a specific quantity (e.g., limitations of the measurement system), and represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "substantially" can mean within one or more standard deviations, and unless otherwise specified, can mean within 10% or 5% of the deviation of said value.

[0037] The terms “proximal” and “distal” are used herein in relation to the clinician manipulating the surgical instruments. In embodiments of this disclosure, the term “proximal” refers to a portion of the involved component or structure that is close to the clinician, and the term “distal” refers to a portion of the involved component or structure that is distant from the clinician.

[0038] Anastomosis devices typically include a handle, a cannula assembly, and an anastomosis execution assembly. The anastomosis execution assembly includes a clamp assembly, which comprises a first clamp and a second clamp. For example, the first clamp includes an anvil, and the second clamp includes a staple cartridge assembly, wherein the staple cartridge assembly includes a staple cartridge and a staple cartridge seat. The second clamp is pivotally connected to the first clamp. In existing reusable anastomosis devices, for example, the staple cartridge is detachably mounted to the staple cartridge seat. After a single use, the activated staple cartridge can be removed, and a new staple cartridge can be installed onto the staple cartridge seat. The first and second clamps can be closed to each other to close the distal actuator, and can be moved apart to open the distal actuator. The distal actuator closes to clamp the target tissue. For example, when the staples in the staple cartridge are ejected to suture the target tissue and then the target tissue is cut, the distal actuator needs to be opened to release the target tissue after the cutting operation is completed. At this time, even if the closing mechanism that drives the distal actuator to close is withdrawn and no longer forces the distal actuator to close, it is not easy to automatically separate from each other and open the distal actuator due to the forces between the first and second clamps and the target tissue. Or even if the second clamp pivots away from the first clamp, the opening angle formed between the first and second clamps is small and the target tissue cannot be released smoothly. It is often necessary to use external force to open the two to a suitable angle. At this time, the distal actuator is located in the patient's body, and it is difficult to open it manually and there is a risk of infection, which causes inconvenience to the surgical operation.

[0039] At least one embodiment of this disclosure provides a matching execution assembly, which includes a clamping body assembly, a connector, and an elastic member. The clamping body assembly includes a first clamping body and a second clamping body, the second clamping body being configured to pivot relative to the first clamping body to close or open the clamping body assembly; the connector is configured to be connected to the clamping body assembly; the elastic member includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the connector, the second connecting portion being connected to the second clamping body, and the second connecting portion being configured to apply an elastic force to the second clamping body to cause the second clamping body to pivot relative to the first clamping body to open the clamping body assembly.

[0040] At least one embodiment of this disclosure provides an anastomosis device, which includes a handle portion, a cannula assembly, and an anastomosis execution component provided in the embodiments of this disclosure, connected in sequence.

[0041] According to the anastomosis device provided in this disclosure, the second clamp can move away from the first clamp under the elastic force of the elastic element and separate from the first clamp, thereby opening the distal actuator to a suitable angle to clamp the tissue at a suitable angle or release the target tissue after anastomosis. This solves the problem that the first and second clamps are not easy to separate after surgical operation, or that the opening angle formed between them is small, allowing the target tissue to be smoothly released by the distal actuator without the need for manual intervention to open the first and second clamps to a suitable angle, facilitating surgical operation and avoiding the risk of infection introduced by manual intervention.

[0042] For example, Figure 1 This is a partial structural schematic diagram of an anastomosis device 10 provided in an embodiment of this disclosure; Figure 2 This is a partial structural schematic diagram of an anastomosis device 10 in an unclosed state according to an embodiment of this disclosure. (See reference) Figure 1 and Figure 2 The anastomosis device 10 includes an anastomosis execution component 100. Figure 1 The anastomosis device 10, also known as an anastomosis device, comprises components within the frame, a cannula assembly 200, and a handle (not shown). The anastomosis execution assembly 100 includes a clamp body assembly 1 and a lever assembly 8. The clamp body assembly 1 is connected to the distal end of the lever assembly 8 via a connector 6. The clamp body assembly 1 includes a first clamp 11 and a second clamp 12, the second clamp 12 being pivotable relative to the first clamp 11. The anastomosis device 10 extends along axis D1. The clamp body assembly 1 is configured such that the first clamp 11 and the second clamp 12 are open in an initial state. The lever assembly 8 internally contains a drive lever assembly, the distal end of which is connected to a closure mechanism 2 (e.g., a cutting device, here the closure mechanism is reused as a cutting device). Operation of the handle portion moves the drive lever assembly toward the distal end of the anastomosis device 10, thereby driving the closure mechanism 2 toward the distal end of the anastomosis device 10, causing the first clamp 11 and the second clamp 12 to close to clamp the target tissue and perform suturing and cutting of the target tissue.

[0043] Figure 3 This is a partial structural schematic diagram of an anastomosis device 10 in a closed state according to an embodiment of the present disclosure; Figure 8 This is a schematic diagram of the structure of an elastic element in a matching device according to an embodiment of this disclosure. (Reference) Figure 1-3 and Figure 8 The anastomosis device 10 also includes an elastic element 3. The elastic element 3 is located at the proximal end of the clamp assembly 1, the proximal end of the elastic element 3 is connected to the connector 6, and the distal end of the elastic element 3 is movably connected to the second clamp 12 and is configured to apply an elastic force to the second clamp 12 to separate the second clamp 12 from the first clamp 11 and open the clamp assembly 1.

[0044] According to the anastomosis device 10 provided in the present disclosure, the second clamp 12 can move away from the first clamp 11 and separate from the first clamp 11 under the elastic force of the elastic member 3, thereby opening the clamp assembly 1. Through the intervention of the elastic force applied by the elastic member 3, the clamp assembly 1 can be opened to a suitable angle, that is, the angle between the second clamp 12 and the first clamp 11 is large enough to release the target tissue. For example, the second clamp 12 can be a staple cartridge assembly including a staple cartridge. When the clamp assembly 1 is in the closed state, the staples in the staple cartridge of the second clamp 12 are released to suture the target tissue. Then the sutured tissue is cut. After the cutting operation is completed, the drive rod assembly retracts to the proximal end of the anastomosis device 10, and the closing mechanism 2 returns to the proximal end of the rod assembly 8. The clamp assembly 1 is no longer forced to close. Even if the clamp assembly 1 is not easy to automatically separate from each other and open due to the interaction force between the first clamp 11 and the second clamp 12 and the target tissue sandwiched between them, the second clamp 12 can be separated from the first clamp 11 under the elastic force of the elastic element 3 through the action of the elastic element 3, thereby opening the clamp assembly 1 to a suitable angle to release the target tissue smoothly. This avoids the problem that the first clamp 11 and the second clamp 12 are not easy to separate after the operation, and also avoids the problem that the second clamp 12 will pivot away from the first clamp 11 without external interference, resulting in a small opening angle between the first clamp 11 and the second clamp 12. This allows the target tissue to be released smoothly by the clamp assembly 1 without the need for manual intervention to open the first clamp 11 and the second clamp 12 to a suitable angle, which facilitates the operation and avoids the risk of infection brought in by manual intervention.

[0045] The anastomosis device disclosed herein incorporates an elastic element within the anastomosis execution component, eliminating the need for repeated installation of the elastic element. The removal and installation of the staple cartridge on the second clamp does not affect the pre-set connection of the elastic element. For example, the first connecting part of the elastic element is reliably connected to the connecting member, and the second connecting part of the elastic element is connected to the second clamp, so that the second clamp and the first clamp can automatically separate to a suitable angle after the tissue suturing and cutting operations are completed, thereby improving the reliability and stability of the anastomosis device.

[0046] Figure 7 This is a schematic diagram of the structure of a connector of an anastomosis device according to an embodiment of the present disclosure; Figure 8 This is a schematic diagram of the structure of an elastic element in a matching device according to an embodiment of this disclosure. For example, refer to... Figure 2 and Figure 7-8 The anastomosis device 10 also includes a connector 6. A first connecting portion 31 of the elastic member 3 is connected to the connector 6, and the first connecting portion 31 includes the proximal end of the elastic member 3. A second connecting portion 32 of the elastic member 3 is connected to the second clamping body 12, and the second connecting portion 32 includes the distal end of the elastic member 3. Thus, combined with... Figure 2 The first connecting portion 31 of the elastic element 3 can be disposed on the connector 6. The first clamp 11 covers and presses the proximal end of the elastic element 6, thereby restricting the movement of the first connecting portion 31 of the elastic element 3 in the longitudinal direction D2 through the combined action of the first clamp 11 and the connector 6. The longitudinal direction D2 is perpendicular to the axial direction D1. Since the second connecting portion 32 of the elastic element 3 is connected to the second clamp 12, for example, abutting, when the elastic element 3 undergoes elastic deformation and generates an elastic force (e.g., elastic restoring force), the elastic force can be applied to the second clamp 12 to drive the second clamp 12 to pivot relative to the first clamp 11.

[0047] For example, refer to Figure 2 The anastomosis device 10 also includes a closing mechanism 2, which is configured to apply a driving force to the second clamp 12 to drive the second clamp 12 to pivot closer to the first clamp 11. For example, the closing mechanism 2 moves along the axial direction D1 toward the distal end (right side in the figure) of the anastomosis device 10 and approaches the clamp assembly 1 to apply a driving force to the clamp assembly 1 to close the second clamp 12 and the first clamp 11 together. At this time, the second connecting portion 32 of the elastic member 3 causes the elastic member 3 to elastically deform as the second clamp 12 pivots toward the first clamp 11, thereby applying an elastic force to the second clamp 12. The driving force of the closing mechanism 2 overcomes the elastic force to close the anastomosis execution assembly 1, and the state of the anastomosis device 10 changes from... Figure 2 The shown open state has changed to Figure 3 The closed state is shown. The closing mechanism 2 is also configured to stop applying a driving force to the second clamp 12. For example, the closing mechanism 2 moves along the axial direction D1 towards the proximal end of the anastomosis device 10, thereby no longer applying a driving force to the clamp assembly 1 that would close the second clamp 12 and the first clamp 11 together. At this time, the second clamp 12 moves away from the first clamp 11 under the action of the elastic force applied by the elastic member 3, separating from the first clamp 11, thereby opening the clamp assembly 1, and the state of the anastomosis device 10 changes from... Figure 3 The closed state shown becomes Figure 2 As shown in the open state, during this process, the clamp assembly 1 can be opened to a suitable angle by the intervention of the elastic force applied by the elastic element 3.

[0048] This embodiment uses the example of the second clamp 12 being a staple cartridge assembly and the first clamp 11 being an anvil. Of course, in some other embodiments, the second clamp 12 is an anvil and the first clamp 11 is a staple cartridge assembly.

[0049] Figure 4 A partial structural diagram of an anastomosis device in the open state is provided in one embodiment of this disclosure. Figure 4 exist Figure 2 The side wall connection portion 120 of the staple cartridge seat 121 is further shown on the basis of this. Figure 5 yes Figure 2A schematic diagram of a portion of the anastomosis device from a top-down view; Figure 6 yes Figure 5 A magnified view of the area within the dashed box. For example, refer to... Figure 2-6 The staple cartridge assembly (i.e., the second clamp 12) includes a staple cartridge seat 121 and a staple cartridge 122 detachably mounted on the staple cartridge seat 121. The staple cartridge 122 contains staples, which can be ejected from the staple cartridge 122 to enter the target tissue held by the clamp assembly 1 for suturing. For example, the second connecting portion 32 of the elastic member 3 is connected to the staple cartridge seat 121, for example, by abutment or fixation. Thus, the elastic member 3 applies an elastic force to the staple cartridge seat 121, thereby separating the second clamp 12 (i.e., the staple cartridge assembly) from the first clamp 11 (i.e., the staple seat).

[0050] For example, refer to Figure 4 The second clamp 12 of the anastomosis device 10 may further include a sidewall connecting portion 120 of the staple cartridge seat 121. The proximal end of the sidewall connecting portion 120 of the staple cartridge seat 121 is rotatably connected to the connector 6, and the staple cartridge seat 121 can rotate relative to the connector 6. Furthermore, the sidewall connecting portion 120 of the staple cartridge seat 121 is located on the side of the second clamp 12. The orthographic projection of the sidewall connecting portion 120 on a reference plane parallel to the longitudinal direction D2 and parallel to the axial direction D1 covers at least a portion of the orthographic projection of the elastic member 2 on the reference plane, so as to connect the second clamp 12 to the connector 6, allowing the second clamp 12 to rotate relative to the connector 6, and providing protection and support for the elastic member 3 and the staple cartridge located in the staple cartridge seat 121.

[0051] To facilitate the description of the structure and positional relationship of elastic element 3 Figure 2 The side wall connection 120 of the staple cartridge 121 near the observer is omitted to expose the sides of the elastic member 3 and the connector 6.

[0052] For example, refer to Figure 2 , Figure 7 and Figure 8 The elastic element 3 includes a first connecting portion 31. The connecting element 6 includes a groove 6b, the shape of which matches the shape of the first connecting portion 31 of the elastic element 3, and the first connecting portion 31 of the elastic element 3 is embedded in the groove 6b; the second connecting portion 32 of the elastic element 3 is configured to pivot with the movement of the second clamp 12 so that the elastic element 3 undergoes elastic deformation and applies an elastic force to the second clamp 12. Embedding the first connecting portion 31 of the elastic element 3 in the groove 6b can stably restrict the movement of the elastic element 3, especially restricting the movement of the elastic element 3 in the longitudinal direction D2 and the axial direction D1, and is beneficial to use the groove wall of the groove 6b to compress the elastic element 6 when the clamp assembly 1 is closed, so that the elastic element 6 undergoes sufficient elastic deformation and generates a sufficiently large elastic force.

[0053] For example, refer to Figure 2 and Figure 7 The proximal end of the elastic element 3 is disposed on the upper surface 6c of the connector 6 near the first clamping body 11. For example, as described below, the first bent portion 3a of the elastic element 3 is disposed on the upper surface 6c of the connector 6 near the first clamping body 11. Figure 7 As shown, the upper surface 6c is the top surface of the connector 6. Figure 2 As shown, when the fitting execution assembly 1 is open, the distal end of the elastic element 3 is located in a first position away from the first clamping body 11. For example, the fourth bend 3d of the elastic element 3, as described below, is located in a first position away from the first clamping body 11. When the clamping body assembly 1 is closed, the distal end of the elastic element 3 is located in a second position close to the first clamping body 11. For example, the fourth bend 3d of the elastic element 3 is located in a second position close to the first clamping body 11. (Refer to...) Figure 3 The second position relative to Figure 2 The first position shown is closer to the first clamp 11. The longitudinal direction D2 is perpendicular to the axial direction D1, and the first clamp 11 and the second clamp 12 are opposite each other in the longitudinal direction D2. In the longitudinal direction D2, the height of the second position is higher than the height of the first position. Therefore, when the clamp assembly 1 closes, the elastic element 3 is compressed and deformed, generating an elastic force applied to the second clamp 12. The driving force applied by the closing mechanism 2 to the second clamp 12 to close with the first clamp 11 overcomes this elastic force, causing the second clamp 12 to close with the first clamp 11. The proximal end of the elastic element 3 is located on the upper surface 6c of the connector 6 near the first clamp 11, allowing the proximal end of the elastic element 3 to be positioned higher. This facilitates a larger span of the elastic element in the longitudinal direction D2, which not only helps to stably fix the elastic element 3 but also allows the elastic element 3 to generate a sufficiently large deformation. For example, the height of the second position in the longitudinal direction D2 is basically equal to the height of the upper surface 6c of the connector 6 in the longitudinal direction D2. This makes it easier to make full use of the limited space so that the elastic element 3 can generate a large deformation when the clamp assembly 1 is closed. In addition, it is beneficial to ensure that the fit between the connector 6, the pin seat and the pin cartridge assembly is tight and regular when the clamp assembly 1 is closed.

[0054] For example, refer to Figure 2-3 and Figure 7-8 The elastic element 3 is bent and includes multiple bends. Adjacent bends are connected by an angle, which is neither zero nor 180°, meaning the two bends are neither parallel nor coincident. This bent design not only helps to stabilize and fix the elastic element 3, but also allows for greater elastic deformation by utilizing multiple bends.

[0055] For example, refer to Figure 2-3 and Figure 7-8The multiple bends include a first bend 3a, a second bend 3b, a third bend 3c, and a fourth bend 3d connected sequentially. For example, the first connecting portion 31 of the elastic member 3 includes a first bend 3a and a second bend 3b, and the second connecting portion 32 of the elastic member 3 includes a third bend 3c and a fourth bend 3d. For example, as... Figure 3 As shown, when the clamp assembly 1 is in the closed state, the included angle between the second bent portion 3b and the third bent portion 3c is the first included angle θ1. The first included angle θ1 is an acute angle, which is beneficial for the elastic element 6 to undergo sufficient elastic deformation, thereby generating a sufficiently large elastic force. For example, the value of the first included angle θ1 is between 20 degrees and 30 degrees (inclusive). Within this range, the elastic deformation effect of the elastic element 6 is better, and the generated elastic force is more likely to meet the requirements.

[0056] For example, when the remote actuator 1 is in the closed state, the value of the first included angle θ1 can be 20° to 25°, for example, 22.5°.

[0057] Of course, in other embodiments, the size of the first included angle θ1 is not limited to the range listed above, and those skilled in the art can design it according to the specific design requirements under different circumstances.

[0058] For example, such as Figure 2 As shown, when the clamp assembly 1 is in the open state, there is a second included angle θ2 between the second bent portion 3b and the third bent portion 3c. The second included angle θ2 is also an acute angle, and its value is greater than that of the first included angle θ1. For example, the value of the second included angle θ2 is between 35 degrees and 45 degrees (inclusive), so that when the clamp assembly 1 is in the open state, the angle between the first clamp 11 and the second clamp 12 (the clamp opening angle) is within a reasonable range, for example, about 13°. If the clamp opening angle is too large, it is not conducive to the upper and lower edges of the cutting device driving the first clamp 11 and the second clamp 12 to close; if the clamp opening angle is too small, it is not conducive to clamping the target tissue (the target tissue may include animal or human tissue, blood vessels, etc., with a certain thickness). For example, a value of 43° for the second included angle θ2 can achieve a better effect in controlling the clamp opening angle.

[0059] Of course, in other embodiments, the size of the second included angle θ2 is not limited to the range listed above, and those skilled in the art can design it according to the specific design requirements under different circumstances.

[0060] For example, the radial width of the elastic element 3 is no greater than 1 / 3 of the radial width of the second clamp 12. Similarly, the radial width of the elastic element 3 is no greater than 1 / 3 of the radial width of the staple cartridge seat. The first clamp 11 and the second clamp 12 are opposite each other in the longitudinal direction D2, and the longitudinal direction D2 is perpendicular to the axial direction. The aforementioned radial direction is perpendicular to both the longitudinal direction D2 and the axial direction D1. If the radial width of the elastic element 3 is too small, the elastic element 3 cannot provide sufficient elasticity to allow the second clamp 12 to move away from the first clamp 11, thereby opening the matching actuator 100. If the radial width of the elastic element 3 is too large, the elastic element 3 cannot be positioned on the connector 6 within a limited space. For example, refer to... Figure 2-3 The first bend 3a is provided on the upper surface 6c of the connector 6 near the first clamp 11, and extends along the upper surface 6c of the connector 6 near the first clamp 11; for example, the first bend 3a extends from the second bend 3b toward the proximal end of the connector 6 (e.g., Figure 3 (As shown) extends, or, the first bend 3a extends toward the distal end of the connector 6 (as shown). Figure 11 (As shown) The first bend 3a and the second bend 3b are disposed in the groove 6b, and the third bend 3c and the fourth bend 3d rotate as the second clamp 12 moves. Thus, the elastic force of the elastic member 3 is overcome by the compression and restriction of the groove wall of the groove 6b and the second clamp 12, so as to keep the elastic member 3 stable when the clamp assembly 1 is in the closed state, and keep the clamp assembly 1 stably in the closed state, so as to ensure smooth surgical operation in the closed state.

[0061] For example, refer to Figure 2 and Figure 7 The connector 6 includes a first abutment surface 6e. When the matching execution assembly 100 is closed, the third bend 3c at least partially abuts against the first abutment surface 6e. The first abutment surface 6e extends from the distal end of the groove 6b (the bottom end of the second groove 6b-2) to the upper surface 6c of the distal end of the connector 6. When the matching execution assembly 100 is closed, the first included angle θ1 between the second bend 3b and the third bend 3c is an acute angle. When the matching execution assembly 100 is closed, at least part of the third bend 3c abuts against the first abutment surface 6e. Therefore, the included angle between the first abutment surface 6e and the second bend 3b embedded in the groove 6b is an acute angle, or in other words, the included angle between the first abutment surface 6e and the groove wall of the groove 6b used to limit the second bend 3b is an acute angle.

[0062] For example, refer to Figure 2 and Figure 7The connector 6 includes a second abutment surface 6d, and the proximal end of the second clamp 12 abuts against the second abutment surface 6d. For example, the proximal end of the staple cartridge seat 121 abuts against the second abutment surface 6d. During the process of the second clamp 12 moving away from the first clamp 11 under the action of the elastic force applied by the elastic member 3 to open the clamp assembly 1, the clamp assembly 1 is opened by the combined action of the abutment here and the elastic force applied by the elastic member 3. The abutment here can maintain the stable movement of the second clamp 12 and enhance the structural stability of the clamp assembly 1 during the opening process.

[0063] For example, refer to Figure 2 and Figure 4 The anastomosis device 10 also includes a cutting device. The clamping assembly 1 closes to hold the target tissue, and the cutting device is configured to move axially D1 to cut the target tissue held by the clamping assembly 1. For example, the cutting device reuses the closing mechanism 2; therefore, in this embodiment, the cutting device is the aforementioned closing mechanism 2. (Reference) Figure 4 The closing mechanism 2 includes a main body 20 and a cutting blade 22 disposed on the main body 20. The closing mechanism 2 also includes a lower eave 23 and an upper eave 24. The lower eave 23 moves along the bottom surface of the second clamp 12 away from the first clamp 11, and the upper eave 24 moves along the bottom surface of the first clamp 11 away from the second clamp 12. Thus, the movement of the upper eave 23 and the lower eave 24 causes the second clamp 12 to pivot and move closer to the first clamp 11, thereby closing the clamp assembly 1.

[0064] For example, refer to Figure 2 and Figure 7 The connector 6 includes a groove 6f extending longitudinally through it, and the closing mechanism 2 is configured to move along the groove 6f to the anastomosis execution assembly 1. The groove 6f provides a channel for the movement of the cutting device along axis D1, for example, the cutting blade 22 moves at least partially within the groove 6f. Thus, the connector 6 is fully utilized to achieve multiple functions, simplifying the structure of the anastomosis device 10.

[0065] For example, refer to Figure 2 and Figure 7The connector 6 includes a first side portion 601 and a second side portion 602 separated by a groove 6f. The first side portion 601 has an upper surface 6c and a side surface 6a. The entire upper surface of the connector 6 includes the upper surface 6c of the first side portion 601. The first connecting portion 31 of the elastic member 3 is disposed on the upper surface 6c of the connector 6, meaning it is disposed on the upper surface 6c of the first side portion 601. The side surface 6a of the first side portion 601 faces away from the second side portion 602, and the extension direction of the side surface 6a of the first side portion 601 intersects with the extension direction of the upper surface 6c of the first side portion 601, that is, the surfaces containing the upper surface 6c and the side surface 6a intersect. The groove 6 includes a first groove 6b-1 and a second groove 6b-2; the first groove 6b-1 is disposed on the upper surface 6c of the first side portion 601, and the first bent portion 3a is fixed in the first groove 6b-1; the second groove 6b-2 communicates with the first groove 6b-1 and extends from the first groove 6b-1 toward the bottom surface of the connector 6, and the second bent portion 3b passes through the second groove 6b-2. In this way, a portion of the elastic element 3 is embedded in the connector 6, and the elastic element 3 occupies virtually no additional space.

[0066] Figure 9 This is a partial schematic diagram of a matching actuator assembly according to an embodiment of the present disclosure, including a connector and a drive rod. For example, refer to... Figure 9 The matching execution assembly 100 includes a lever assembly 8, which includes a drive assembly. A connector 6 connects the clamp assembly 1 and the lever assembly 8, and the distal end of the drive assembly is connected to the cutting device. Thus, by utilizing the connector 6 between the clamp assembly 1 and the lever assembly 8, at least the functions of setting the elastic element 3 and providing a channel for the cutting device are achieved. This fully utilizes the connector 6 located at a specific position between the drive lever 8 and the clamp assembly 1. While achieving the aforementioned multiple functions, no additional components are needed, the overall size of the matching execution assembly 100 is not affected, and the structure and manufacturing difficulty of the matching device are simplified.

[0067] For example, refer to Figure 5-6 The staple cartridge holder 121 includes a bottom surface 121a facing the staple cartridge 122, a side wall 121b connected to and intersecting the bottom surface 121a, and a protrusion 121c. For example, the side wall of the staple cartridge holder 121 includes side walls 121b and 121d that are opposite each other and located on both sides of the installed staple cartridge 122, and the protrusion 121c is located near the side wall 121b on the side closer to the elastic member 3, so that the protrusion 121c can be connected to the second connecting portion 32 of the elastic member 3.

[0068] For example, in Figure 5-6In the illustrated embodiment, the protrusion 121c is connected to the sidewall 121b of the staple cartridge holder 121 and protrudes from the sidewall towards the inner side of the sidewall 121b. The second connecting portion 32 of the elastic member 3 is located on the upper surface of the protrusion 121c. For example, the second connecting portion 32 of the elastic member 3 is fixed to the upper surface of the protrusion 121c, welded to the upper surface of the protrusion 121c, or overlaps the upper surface of the protrusion 121c. The upper surface of the protrusion 121c is away from the bottom surface of the staple cartridge holder 121. Thus, the second connecting portion 32 of the elastic member 3 can be connected to the staple cartridge assembly, and the staple cartridge and the elastic member 3 do not have direct contact, so the elastic member 3 will not affect the installation of the staple cartridge.

[0069] The aforementioned "inner side facing the sidewall 121b" refers to the space facing the staple cartridge seat 121 used to accommodate the staple cartridge 122.

[0070] For example, in Figure 5-6 In the embodiment shown, there is a longitudinal gap between the protrusion 121c and the bottom surface 121a of the staple cartridge seat 121, combined with Figure 10 The longitudinal spacing is used to accommodate the proximal end 122b of the staple cartridge 122 mounted on the staple cartridge seat 121, so as to allow the staple cartridge 122 to be installed at an angle under the constraint of the protrusion 121c.

[0071] Figure 10 This is a partial schematic diagram of an anastomosis device according to an embodiment of the present disclosure, including a protrusion 121c and a connector 6. (See reference...) Figure 10 During the installation process, when the staple cartridge 122 is pushed from the far end to the near end of the staple cartridge seat 121 in a horizontal direction parallel to the bottom surface 121a of the staple cartridge seat 121, the height of the protrusion 121c in a direction perpendicular to the bottom surface 121a of the staple cartridge seat 121 is lower than the height of the upper surface of the staple cartridge 122 (i.e. the surface away from the staple cartridge seat 121), for example, lower than the height of the upper surface of the near end 122b of the staple cartridge 122, so as to prevent the staple cartridge 122 from moving in the horizontal direction, thereby preventing the staple cartridge 122 from being installed on the staple cartridge seat 121 in the horizontal direction. The staple cartridge 122 needs to be tilted at a certain angle, for example, the upper surface 122a of the staple cartridge 122 makes a certain angle with the horizontal direction, so that the proximal end 122b of the staple cartridge 122 is first inserted under the protrusion 121c, that is, inserted into the longitudinal gap D2 between the protrusion 121c and the bottom surface 121a of the staple cartridge seat 121. Then the other part of the staple cartridge 122 is slowly pushed in and pressed down into the receiving space of the staple cartridge seat 121. In this way, during the process of installing the staple cartridge 122 into the staple cartridge seat 121, the proximal end 122b of the staple cartridge 122 advances more gently, and there is no risk that the staple cartridge 122 will be easily pushed in suddenly due to lack of resistance when installing the staple cartridge in the horizontal direction, which would damage the proximal end 122b of the staple cartridge 122 and the connector 6 and elastic member 3 located near the proximal end of the clamp assembly 1.

[0072] For example, refer to Figure 9 Before the staple cartridge 122 is installed, the anastomosis device 10 is in its initial state. For example... Figure 10 As shown, the staple cartridge 122 includes a platform component 4. The platform component 4 is located near the proximal end 122b of the staple cartridge 122 to be installed; the platform component 4 includes a pusher portion 40 and a platform portion 41, the platform portion 41 being located near the proximal end of the pusher portion 40, connected to the proximal end of the pusher portion 40 and protruding from the pusher portion 40 along the extending direction of the staple cartridge 122; the pusher portion 40 is slidable along the slide in the staple cartridge seat 121 and the staple cartridge 122 along the extending direction of the staple cartridge 122 to push out the matching staples in the staple cartridge 122; the platform portion 41 is used to raise a corresponding component (not shown) of the empty staple cartridge safety device in the longitudinal direction D2 in the initial state to achieve other corresponding functions. When the staple cartridge 122 is installed in its initial state, the platform portion 41 of the platform component 4 is located near the end of the slide of the staple cartridge 122. After the staple cartridge 122 is installed into the staple cartridge seat 121, the platform portion 41 should be located below the corresponding component of the empty staple cartridge safety device. Therefore, if the staple cartridge 122 is installed horizontally, and the staple cartridge 122 is pushed into the staple cartridge seat 121 under very smooth conditions, the platform portion 41 of the platform component 4 may come into contact with the cutting device or the connecting piece 6 (the corresponding component of the empty staple cartridge safety device) due to the operator's force. This can easily cause the platform component 4 to shift along the axial direction D1, possibly moving towards the distal end of the fitting device 10. Consequently, the platform portion 41 of the platform component 4 cannot provide the function of supporting and raising the corresponding component of the empty staple cartridge safety device in the longitudinal direction D2 in its original position, causing its original empty staple cartridge safety function to fail. Therefore, a protrusion 121c is provided on the staple cartridge seat 121. The protrusion 121c restricts the operator to install the staple cartridge 122 only at an angle, thus avoiding this problem.

[0073] For example, the protrusion 121c is a sheet extending along the bottom surface parallel to the pin cartridge seat 121, which helps to save the space occupied by the protrusion 121c. Of course, the protrusion 121c is not limited to this. Figure 6 The shape shown in this embodiment is not limited to the specific shape of the protrusion 121c.

[0074] Figure 11 This is a partial structural schematic diagram of a matching device including another elastic element according to an embodiment of the present disclosure. Figure 11 The illustrated embodiments and Figure 2 The difference in the illustrated embodiment lies in the shape of the elastic element 3. Figure 2 In the illustrated embodiment, the first bent portion 3a of the elastic member 3 bends and extends towards the proximal end of the fitting device 10 relative to the second bent portion 3b. (See reference...) Figure 11The first bent portion 3a of the elastic member 3 bends and extends toward the distal end of the matching device 10 relative to the second bent portion 3b. Figure 11 Other technical features and corresponding technical effects of the embodiments shown are similar to those of the embodiments shown. Figure 2 The embodiments shown are the same and can be referred to the previous description, so they will not be repeated here.

[0075] Figure 12 This is a partial structural schematic diagram of an anastomosis device including another protrusion provided in an embodiment of the present disclosure. Figure 11 The illustrated embodiments and Figure 5-6 The difference between the embodiments shown is that the protrusions are arranged differently.

[0076] refer to Figure 12 For example, a protrusion 121c can be provided on the bottom surface 121a of the staple cartridge seat 121 and connected to the bottom surface 121a of the staple cartridge seat 121; for example, in Figure 12 In the illustrated embodiment, the protrusion 121c is also connected to the sidewall 121b to facilitate structural stability and manufacturing convenience. Of course, in other embodiments, the protrusion 121c may also have a certain gap with the sidewall 121b. For example, after the staple cartridge 122 is installed into the staple cartridge base 121, the protrusion 121c is located near the staple cartridge 122. For example, the protrusion 121c corresponds to the position of the elastic member 3 near the sidewall 121b of the staple cartridge base 121, for example, connected to the sidewall 121b and protruding inwards from the sidewall 121b. The second connecting portion 32 of the elastic member 3 may also be connected to the upper surface of the protrusion 121c.

[0077] Figure 12 The other technical features and corresponding technical effects shown are all related to Figure 5-6 The same applies as shown in the previous description, and will not be repeated here.

[0078] The anastomosis device disclosed herein has an elastic element disposed on a connector. The second clamp can pivot away from the first clamp under the elastic force of the elastic element and separate from the first clamp, thereby opening the clamp assembly to a suitable angle to clamp the tissue at a suitable angle or to release the target tissue sufficiently after anastomosis. There is no need to repeatedly install the elastic element. When the staple cartridge is disassembled, the first connecting part of the original elastic element is reliably connected to the connector, and the second connecting part of the elastic element is connected to the second clamp, so that the second clamp separates from the first clamp to a suitable angle, thereby improving the reliability and stability of the anastomosis device.

[0079] The following points need to be explained:

[0080] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0081] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0082] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A matching execution component, comprising: A clamp assembly includes a first clamp and a second clamp, wherein the second clamp is configured to pivot relative to the first clamp to close or open the clamp assembly; A connector, configured to connect to the clamp assembly; and The elastic element includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the connector, the second connecting portion is connected to the second clamp body, and the second connecting portion is configured to apply an elastic force to the second clamp body to cause the second clamp body to pivot relative to the first clamp body to open the clamp body assembly.

2. The matching execution component according to claim 1 further includes a closing mechanism, wherein, The closing mechanism is configured as follows: When the closing mechanism applies a driving force to the second clamp body to drive the second clamp body to pivot closer to the first clamp body, the elastic element undergoes elastic deformation and applies an elastic force to the second clamp body, and the driving force overcomes the elastic force to close the clamp body assembly; When the closing mechanism stops applying driving force to the second clamp, the second clamp pivots away from the first clamp under the action of the elastic force, thereby opening the clamp assembly.

3. The matching execution component according to claim 2, wherein, The connector includes a first groove, the shape of which matches the shape of the first connecting portion of the elastic member, and the first connecting portion is disposed in the first groove; The second connecting portion of the elastic element is configured to pivot with the second clamp body to cause the elastic element to undergo elastic deformation and apply the elastic force to the second clamp body.

4. The matching execution component according to claim 3, wherein, The connector is disposed at the proximal end of the clamp body assembly and connected to the second clamp body, and the first groove is disposed on the upper surface of the connector near the first clamp body; When the clamp assembly is open, the second connecting portion of the elastic element is located in a first position away from the first clamp; when the clamp assembly is closed, the second connecting portion of the elastic element is located in a second position close to the first clamp.

5. The matching execution component according to claim 4, wherein, The elastic element further includes at least two connected bending portions, adjacent bending portions having an included angle and being rotatably connected, and the two ends of the at least two bending portions being respectively connected to the first connecting portion and the second connecting portion.

6. The matching execution component according to claim 5, wherein, The at least two bends include a second bend and a third bend connected together, with the second bend and the third bend having the included angle between them, and the first connecting part, the second bend, the third bend and the second connecting part being connected in sequence; The connector further includes a second groove and a first abutting surface. The second groove extends from the distal end of the first groove toward the bottom surface of the connector, and the first abutting surface extends from the bottom end of the second groove toward the upper surface of the distal end of the connector. The second bent portion is disposed in the second groove. When the clamp assembly is closed, the third bent portion abuts against the first abutting surface.

7. The matching execution component according to claim 6, wherein, When the clamp assembly is in the closed state, the included angle between the second bent portion and the third bent portion is a first included angle, and the first included angle is an acute angle. When the clamp assembly is in the open state, the included angle between the second bent portion and the third bent portion is a second included angle, which is an acute angle, and the value of the second included angle is greater than the value of the first included angle.

8. The matching execution component according to claim 7, wherein, The value of the first included angle is between 20 degrees and 30 degrees; The value of the second included angle is between 35 degrees and 45 degrees.

9. The matching execution component according to claim 1, wherein, The width of the elastic element in the radial direction is not greater than 1 / 3 of the width of the second clamp in the radial direction.

10. The matching execution component according to claim 6, in, The at least two bending portions further include a first bending portion connected to the second bending portion and a fourth bending portion connected to the third bending portion, wherein the first bending portion includes a first connecting portion of the elastic member and the fourth bending portion includes a second connecting portion of the elastic member; The first bend is configured to extend along the upper surface of the connector near the first clamp body, and extend from the second bend toward the proximal end or the distal end of the connector.

11. The matching execution component according to any one of claims 1-10, wherein, The second clamp is a staple cartridge assembly, and the first clamp is a staple anchor. The staple cartridge assembly includes a staple cartridge base and a staple cartridge detachably mounted on the staple cartridge base, the staple cartridge being configured to receive anastomotic staples; The second connecting portion of the elastic element is connected to the staple cartridge seat.

12. The matching execution component according to claim 11, wherein, The staple cartridge holder includes a bottom surface facing the staple cartridge, a sidewall connected to and intersecting the bottom surface of the staple cartridge holder, and a protrusion, the upper surface of which faces away from the bottom surface of the staple cartridge holder. The second connecting portion of the elastic element abuts against the upper surface of the protrusion.

13. The matching execution component according to claim 12, wherein, The protrusion is connected to the sidewall and protrudes from the sidewall toward the inside of the sidewall; and there is a longitudinal gap between the protrusion and the bottom surface of the staple cartridge seat, the longitudinal gap being configured to accommodate the proximal end of the staple cartridge.

14. The matching execution component according to claim 12, wherein, The protrusion is connected to the bottom surface and side wall of the staple cartridge seat, respectively, and is configured such that when the staple cartridge is installed in the staple cartridge seat, the protrusion is located near the staple cartridge.

15. A stapler comprising a handle portion, a cannula assembly, and a stapler execution assembly according to any one of claims 1-14, connected in sequence.

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