Anastomat end effector and anastomat

Abstract

The application relates to the technical field of medical suturing devices, and discloses an anastomat end execution mechanism and an anastomat. The anastomat end execution mechanism comprises a anvil connected with a connecting pin, a nail cartridge assembly provided with a first sliding groove, the connecting pin being slidably arranged in the first sliding groove, a cutting piece used for cutting tissues along a cutting direction, the cutting direction intersecting with an extension track of the first sliding groove, an adjusting component connected with the connecting pin, and the adjusting component being used for driving the connecting pin to reciprocally slide along the extension track of the first sliding groove in the first sliding groove, so as to change the position of the rotation center of the rotation connection between the anvil and the nail cartridge assembly. The anastomat end execution mechanism and the anastomat provided by the application can flexibly adjust the forming nail height of the anastomosis nails according to the different tissue thicknesses in the anastomosis area.

Description

Technical Field

[0001] This application relates to the field of medical suture equipment technology, and in particular to an end actuator of a stapler and a stapler. Background Technology

[0002] In the clinical application of laparoscopic linear staplers, operators rely on experience to select a stapler with a suitable stapling height that matches the tissue thickness for anastomosis procedures of varying tissue thicknesses. The compatibility between the stapling height and tissue thickness is crucial. A stapling height that is too low will result in excessive striking force, causing inconvenience for the operator and increasing clinical risks. Conversely, a stapling height that is too low will reduce blood supply, thus affecting tissue healing. A stapling height that is too high will lead to loose sutures, increased risk of tissue bleeding and oral leakage.

[0003] When the thickness of some tissues varies significantly within the anastomosis area, traditional staplers cannot flexibly adjust the shaping height of the staples according to the different tissue thicknesses within the anastomosis area. Summary of the Invention

[0004] This application provides an end-effector of a stapler and a stapler, which can flexibly adjust the forming staple height according to different tissue thicknesses within the anastomosis area.

[0005] In a first aspect, embodiments of this application provide an end-effector of a stapler, comprising:

[0006] Anvil, connected with a connecting pin;

[0007] The staple cartridge assembly is provided with a first groove, and the connecting pin is slidably disposed in the first groove;

[0008] A cutting element for cutting tissue along a cutting direction that intersects the extension trajectory of the first groove;

[0009] An adjusting component, connected to the connecting pin, is used to drive the connecting pin to slide back and forth along the extension trajectory of the first groove within the first groove, thereby changing the position of the rotation center of the anvil relative to the staple cartridge assembly.

[0010] The anastomat end execution mechanism has the beneficial effects that: the anvil is connected with a connecting pin, the cartridge assembly is provided with a first sliding groove, the connecting pin is slidably arranged in the first sliding groove, the cutting member is used for cutting the tissue along a cutting direction, the cutting direction intersects with an extension track of the first sliding groove, the adjusting component is connected with the connecting pin, so when the tissue thickness in the anastomosis area changes obviously, the adjusting component can drive the connecting pin to reciprocatingly slide along the extension track of the first sliding groove in the first sliding groove, the position of the rotation center of the anvil relative to the cartridge assembly is changed, and then the pitch angle of the anvil relative to the cartridge assembly can be changed, so as to adjust the height of the anastomosis needle formed between the anvil and the cartridge assembly, that is, the anastomat end execution mechanism provided by the embodiment can flexibly adjust the forming needle height of the anastomosis needle according to the changes of the tissue thickness in the anastomosis process.

[0011] In some embodiments, the adjusting component comprises:

[0012] The moving member is provided with a second sliding groove, an extension track of the second sliding groove is arranged at an angle with the extension track of the first sliding groove, and the connecting pin is slidably arranged in the second sliding groove.

[0013] The driving mechanism is used for driving the moving member to reciprocatingly move, so that the connecting pin reciprocatingly slides along the extension track of the first sliding groove in the first sliding groove.

[0014] In some embodiments, the driving mechanism is used for driving the moving member to reciprocatingly move along the cutting direction.

[0015] In some embodiments, the driving mechanism is used for driving the moving member to reciprocatingly move along the extension track of the first sliding groove.

[0016] In some embodiments, the anastomat end execution mechanism further comprises a handle shell.

[0017] The driving mechanism comprises:

[0018] The knob is rotatably arranged on the handle shell, the knob is in transmission connection with the moving member, and rotating the knob relative to the handle shell can drive the moving member to reciprocatingly move.

[0019] In some embodiments, the driving mechanism further comprises a connecting member connected with the moving member, the connecting member is movably connected in the handle shell, and the connecting member is provided with a third sliding groove; the knob is provided with a connecting column, the connecting column is arranged in the third sliding groove, and when the knob is rotated relative to the handle shell, the connecting column can reciprocatingly slide in the third sliding groove, so that the connecting member reciprocatingly slides and drives the moving member to reciprocatingly move.

[0020] In some embodiments, the staple cartridge assembly includes a staple cartridge base and a staple cartridge arranged on the staple cartridge base, and the first sliding groove is arranged on the staple cartridge base.

[0021] In some embodiments, the cutting member includes a cutting portion for cutting tissue along the cutting direction and a limiting portion abutting against a side of the anvil away from the staple cartridge assembly, and the adjusting component is configured to drive the connecting pin to reciprocally slide along the extension trajectory of the first sliding groove in the first sliding groove, so that the anvil rotates about the limiting portion as a fulcrum.

[0022] In some embodiments, the limiting portion is provided with a circular arc surface abutting against the side of the anvil away from the staple cartridge assembly, and at least part of the circular arc surface is the fulcrum.

[0023] In a second aspect, the embodiments of the present application provide an anastomat, which includes the anastomat end effector as described in the first aspect.

[0024] The anastomat provided by the embodiments of the present application has the beneficial effects that, since the anvil is connected with the connecting pin, the staple cartridge assembly is provided with the first sliding groove, the connecting pin is slidably arranged in the first sliding groove, the cutting member is configured to cut tissue along the cutting direction, the cutting direction intersects with the extension trajectory of the first sliding groove, and the adjusting component is connected with the connecting pin, when the thickness of the tissue in the anastomosis region changes significantly, the adjusting component can drive the connecting pin to reciprocally slide along the extension trajectory of the first sliding groove in the first sliding groove, so as to change the position of the rotation center of the anvil relative to the staple cartridge assembly, and further change the pitch angle of the anvil relative to the staple cartridge assembly, so as to adjust the height of the anastomosis staple formed between the anvil and the staple cartridge assembly, that is, the anastomat provided by the embodiments of the present application can flexibly adjust the forming height of the anastomosis staple according to the change of the thickness of the tissue in the anastomosis process according to the different thicknesses of different parts of the tissue in the anastomosis region. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0026] Figure 1 is a partial structure schematic diagram of an anastomat end effector in one of the embodiments of the present application;

[0027] Figure 2 is Figure 1This is a partial structural schematic diagram of the adjusting component in one embodiment of this application;

[0028] Figure 3 yes Figure 1 The diagram shows the internal structure of the end actuator of the stapler;

[0029] Figure 4 yes Figure 1 A schematic diagram of the anvil structure of the end actuator of the stapler shown;

[0030] Figure 5 yes Figure 3 The diagram shows the structure of the staple cartridge base in the staple cartridge assembly.

[0031] Figure 6 yes Figure 3 The diagram shows the structure of the staple cartridge in the staple cartridge assembly.

[0032] Figure 7 yes Figure 1 The diagram shows the structure of the anvil in the end actuator of the stapler when the rotation center of the rotational connection relative to the staple cartridge assembly is not adjusted.

[0033] Figure 8 It is Figure 7 The diagram shows the structure after the rotation center of the anvil relative to the staple cartridge assembly has been adjusted towards the staple cartridge assembly.

[0034] Figure 9 It is Figure 7 The diagram shows the structure after the rotation center of the anvil relative to the staple cartridge assembly is adjusted towards the anvil.

[0035] Figure 10 yes Figure 2 The diagram shows the internal structure of the adjustment component.

[0036] Figure 11 yes Figure 2 A schematic diagram of the internal structure of the adjustment component from another perspective;

[0037] Figure 12 yes Figure 10 The diagram shows the structure of the connector in the adjustment component.

[0038] Figure 13 yes Figure 10 A schematic diagram of the knob in the adjustment component is shown;

[0039] Figure 14 yes Figure 3 The diagram shows the structure of the cutting component in the end actuator of the stapler;

[0040] Figure 15 is Figure 3 is a structural schematic view of a wedge in an end effector of an anastomat shown in

[0041] Figure 16 is Figure 3 is a structural schematic view of a pusher in an end effector of an anastomat shown in

[0042] The meanings of the marks in the figures are as follows:

[0043] 100, an end effector of an anastomat;

[0044] 10, an anvil; 11, a pin hole; 12, a first slide;

[0045] 20, a connecting pin;

[0046] 30, a cartridge assembly; 31, a first slide slot; 32, a cartridge base; 33, a cartridge; 331, a second slide; 34, a wedge; 341, a first inclined surface; 342, a flat surface; 343, a second inclined surface; 344, a third inclined surface; 35, a pusher; 351, a pusher slot; 352, a supporting surface;

[0047] 40, a cutting member;

[0048] 41, a cutting portion; 42, a limiting portion; 421, a circular arc surface;

[0049] 50, an adjusting member;

[0050] 51, a moving member; 511, a second slide slot; 52, a handle housing; 53, a knob; 53a, a driving knob; 53b, a driving cam; 531, a connecting column; 532, a knob clamping slot; 533, a rotating shaft; 54, a connecting member; 541, a third slide slot; 55, a locking knob; 56, an elastic member. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0052] It should be noted that when an element is referred to as being “fixed to” or “set on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically limited.

[0054] The description of "one embodiment", "some embodiments" or "an embodiment" in the present application means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in further some embodiments" and the like appearing in the present description are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. In addition, in one or more embodiments, specific features, structures or characteristics can be combined in any suitable manner.

[0055] In the clinical application of the endoscopic linear cutting anastomat, for different tissue thicknesses, the operator will select an anastomat with a suitable anastomat height according to experience. The adaptability of the anastomat height to the tissue thickness is particularly important. If the anastomat height is too low, the firing force of the anastomat will be too large, which will cause inconvenience to the operator, increase the clinical risk, and a too low anastomat height will reduce the blood supply capacity and affect tissue healing. If the anastomat height is too large, the tissue will not be tightly sutured, and the probability of tissue bleeding and fistula will increase.

[0056] For some tissues, the thickness of the tissue in the anastomosis region changes obviously. The traditional anastomat cannot flexibly adjust the anastomat height of the anastomotic nail according to the different tissue thicknesses in the anastomosis region. Due to the complexity of patient differences, the selection of the anastomat is likely to cause difficulties for the operator in the following application scenarios:

[0057] I. When the tissue thickness of the patient is at the critical value of the anastomat height of two anastomats, the operator has difficulty in accurately judging the appropriate anastomat.

[0058] II. For some tissues, such as the thickness of the stomach, lung, liver and the like, the thickness of the tissue in the region changes obviously. The single anastomat height of a certain anastomat cannot well match the entire anastomosis region.

[0059] In order to solve the above problems, the present application provides an anastomat end execution mechanism and an anastomat, which can flexibly adjust the anastomat height of the anastomotic nail according to the different tissue thicknesses in the anastomosis region.

[0060] In order to illustrate the technical solutions of the present application, the following will be described in conjunction with specific drawings and examples.

[0061] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a schematic diagram of part of the structure of the end execution mechanism 100 of the anastomat in one of the embodiments of the present application, Figure 2 is Figure 1 is a schematic diagram of part of the structure of the adjusting component 50 in one of the embodiments of the present application, Figure 3 is Figure 1 is a schematic diagram of the internal structure of the end execution mechanism 100 of the anastomat shown in FIG. 1.

[0062] In a first aspect, the embodiments of the present application provide an end execution mechanism 100 of an anastomat, comprising an anvil 10, a cartridge assembly 30, a cutting member 40 and an adjusting component 50. The anvil 10 is connected with a connecting pin 20; the cartridge assembly 30 is provided with a first sliding groove 31, and the connecting pin 20 is slidably arranged in the first sliding groove 31; the cutting member 40 is used for cutting tissue along a cutting direction, and the cutting direction intersects with the extension trajectory of the first sliding groove 31; the adjusting component 50 is connected with the connecting pin 20, and the adjusting component 50 is used for driving the connecting pin 20 to reciprocally slide along the extension trajectory of the first sliding groove 31 in the first sliding groove 31, so as to change the position of the rotation center of the rotation connection of the anvil 10 relative to the cartridge assembly 30.

[0063] It should be noted that the anvil 10 can be fixed or rotatably connected (such as hinged) with the connecting pin 20, for example, please refer to Figure 4 , Figure 4 is Figure 1 is a schematic diagram of the structure of the anvil 10 of the end execution mechanism 100 of the anastomat shown in FIG. 1, and a pin hole 11 can be provided on the anvil 10, and the connecting pin 20 is fixedly or rotatably arranged in the pin hole 11.

[0064] The inside of the cartridge assembly 30 is used for arranging anastomat staples (not shown in the figure), please refer to Figure 5 and Figure 6 , Figure 5 is Figure 3 is a schematic diagram of the structure of the cartridge base 32 in the cartridge assembly 30 shown in FIG. 2, Figure 6 is Figure 3 is a schematic diagram of the structure of the cartridge 33 in the cartridge assembly 30 shown in FIG. 2, and the cartridge assembly 30 can include the cartridge base 32 and the cartridge 33 arranged on the cartridge base 32, the first sliding groove 31 is arranged on the cartridge base 32, and the inside of the cartridge 33 is used for arranging anastomat staples.

[0065] It can be understood that when the cutting member 40 cuts the tissue along the cutting direction, the anastomosis staples can be lifted from inside the staple cartridge assembly 30 to the anvil 10 after penetrating the tissue to be formed in order to complete the anastomosis process of the tissue. Please refer to Figure 7 , Figure 7 is Figure 1 the structure diagram of the anastomosis stapler end effector 100 when the rotation center of the anvil 10 relative to the staple cartridge assembly 30 is not adjusted, the forming staple height H of the anastomosis staple is related to the distance between the pusher surface of the pusher 35 in the staple cartridge assembly 30 for supporting the anastomosis staple and the surface (staple forming surface) of the anvil 10 close to the staple cartridge 33, and the rotation center of the anvil 10 relative to the staple cartridge assembly 30 is the axis of the connecting pin 20.

[0066] When the connecting pin 20 is located at a certain position (such as the middle position) of the first sliding groove 31, the staple cartridge surface of the staple cartridge 33 close to the anvil 10 and the surface (staple forming surface) of the anvil 10 close to the staple cartridge 33 are parallel, and at this time the distance between the pusher surface of the pusher 35 and the surface (staple forming surface) of the anvil 10 close to the staple cartridge 33 constitutes the standard forming staple height H.

[0067] It should be further pointed out that the adjusting component 50 can include a telescopic cylinder or a linear module, for example, when the adjusting component 50 includes a telescopic cylinder, the telescopic end of the telescopic cylinder is connected with the connecting pin 20. When the adjusting component 50 includes a linear module, the linear module includes a ball screw, a motor and a sliding block, the motor drives the ball screw to rotate so that the sliding block moves along the axis of the ball screw, and the sliding block is connected with the connecting pin 20. The extension trajectory of the first sliding groove 31 is not parallel to the cutting direction, and the cutting direction is the direction in which the proximal end of the anastomosis stapler points to the distal end of the anastomosis stapler. In the embodiment, the extension trajectory of the first sliding groove 31 intersects with the cutting direction.

[0068] Wherein, the extension trajectory of the first sliding groove 31 can be a straight line or a curve, that is, the first sliding groove 31 can be a straight groove or an arc-shaped groove, for example, the extension trajectory of the first sliding groove 31 can be an arc line concave to the distal end direction of the staple cartridge 33, that is, the first sliding groove 31 is an arc-shaped groove; or the extension trajectory of the first sliding groove 31 can be a straight line arranged at an angle with the cutting direction, that is, the first sliding groove 31 is a straight groove.

[0069] In the embodiment, the extension trajectory of the first sliding groove 31 is a straight line perpendicular to the cutting direction, that is, the first sliding groove 31 is a straight groove perpendicular to the cutting direction.

[0070] Please refer to Figure 8 , Figure 8 is to Figure 7The schematic diagram shown illustrates the structure after the rotation center of the anvil 10, which is rotatably connected to the staple cartridge assembly 30, is adjusted towards the staple cartridge assembly 30. When it is necessary to increase the height of the formed staples, it is only necessary to move the connecting pin 20 towards the staple cartridge assembly 30 within the first slide groove 31 by adjusting the component 50 (e.g., ...). Figure 8 The movement (in the direction indicated by the arrow M) causes the distal end of the anvil 10 to tilt at a certain angle relative to the staple cartridge assembly 30, forming a positive tilt angle. This increases the distance between the staple cartridge surface of the staple cartridge 33 near the anvil 10 and the staple forming surface of the anvil 10 near the staple cartridge 33, thereby increasing the distance between the pusher surface of the pusher 35 and the staple forming surface of the anvil 10, and thus increasing the height of the formed staple.

[0071] Please refer to Figure 9 , Figure 9 It is Figure 7 The schematic diagram shown illustrates the structure after the rotation center of the anvil 10, which is rotatably connected to the staple cartridge assembly 30, is adjusted towards the anvil 10. When it is necessary to reduce the height of the shaped staple, it is only necessary to move the connecting pin 20 towards the anvil 10 within the first slide groove 31 by adjusting the component 50 (e.g., ...). Figure 9 The nail is moved in the direction indicated by the arrow N, so that the anvil 10 is tilted down at a certain angle relative to the nail cartridge assembly 30, forming a negative tilt angle. This reduces the distance between the nail cartridge surface of the nail cartridge 33 near the anvil 10 and the nail-forming surface of the anvil 10, thereby reducing the distance between the nail-pushing surface of the nail pusher 35 and the nail-forming surface of the anvil 10, and thus reducing the height of the formed nail.

[0072] The anastomosis device end actuator 100 provided in this embodiment has a connecting pin 20 connected to the anvil 10, a first groove 31 provided in the staple cartridge assembly 30, and the connecting pin 20 slidably disposed in the first groove 31. The cutting member 40 is used to cut tissue along a cutting direction that intersects the extension trajectory of the first groove 31. The adjusting member 50 is connected to the connecting pin 20. Therefore, when the tissue thickness in the anastomosis area changes significantly, the adjusting member 50 can drive the connecting pin 20 to slide back and forth along the extension trajectory of the first groove 31 within the first groove 31, thereby changing the anvil. The position of the rotation center of the anvil 10 relative to the staple cartridge assembly 30 can be changed, thereby changing the pitch angle of the anvil 10 relative to the staple cartridge assembly 30. This allows adjustment of the distance between the staple cartridge surface of the staple cartridge 33 near the anvil 10 and the staple forming surface of the anvil 10, thereby adjusting the distance between the push surface of the staple pusher 35 and the staple forming surface of the anvil 10, and thus adjusting the forming staple height. In other words, the end actuator 100 of the stapler provided in this application embodiment can flexibly adjust the forming staple height of the staple according to the different thicknesses of different parts of the tissue in the anastomosis area during the anastomosis process.

[0073] The anastomat end part actuator 100 provided by the embodiment of the present application can be applied to a linear cutting anastomat under endoscope, can help the operator to flexibly adjust the forming nail height of the anastomotic nail according to the actual situation when coping with complex anastomosis, and greatly reduces the operation risk.

[0074] Alternatively, in order to avoid the movement of the anvil 10 relative to the cartridge assembly 30 in the cutting direction after adjusting the distance between the cartridge surface of the cartridge 33 close to the anvil 10 and the nail forming surface of the anvil 10, the extension trajectory of the first sliding groove 31 can be an arc line concave to the distal end direction of the cartridge 33, that is, the first sliding groove 31 is an arc-shaped groove. In this way, when the connecting pin 20 is driven by the adjusting part 50 to reciprocate in the extension trajectory of the first sliding groove 31, the first sliding groove 31 can avoid the movement of the anvil 10 relative to the cartridge assembly 30 in the cutting direction, thereby avoiding the anastomotic nail from being unable to abut and form on the nail pit on the cartridge surface of the anvil 10.

[0075] Please refer to Figure 2 , Figure 10 and Figure 11 , Figure 10 is Figure 2 the internal structure diagram of the adjusting part 50, Figure 11 is Figure 2 the internal structure diagram of the adjusting part 50 from another perspective.

[0076] In some embodiments, the adjusting part 50 includes a moving part 51 and a driving mechanism. The moving part 51 is provided with a second sliding groove 511, the extension trajectory of the second sliding groove 511 is arranged at an angle with the extension trajectory of the first sliding groove 31, and the connecting pin 20 is slidably arranged in the second sliding groove 511; the driving mechanism is used to drive the moving part 51 to reciprocate, so that the connecting pin 20 reciprocates in the extension trajectory of the first sliding groove 31.

[0077] It should be noted that the extension trajectory of the second sliding groove 511 is arranged at an angle with the extension trajectory of the first sliding groove 31, that is, the extension trajectory of the second sliding groove 511 is not parallel to the extension trajectory of the first sliding groove 31, and the extension trajectory of the second sliding groove 511 can be a straight line or a curve. In the embodiment, the extension trajectory of the second sliding groove 511 is a straight line, and the extension trajectory of the second sliding groove 511 is parallel to the length direction of the second sliding groove 511.

[0078] The driving mechanism can comprise a telescopic cylinder or a linear module, etc. For example, when the driving mechanism comprises a telescopic cylinder, the telescopic end of the telescopic cylinder is connected with the moving piece 51. When the driving mechanism comprises a linear module, the linear module comprises a ball screw, a motor and a sliding block. The motor drives the ball screw to rotate, so that the sliding block moves along the axis of the ball screw. The sliding block is connected with the moving piece 51.

[0079] By adopting the above scheme, the connecting pin 20 can reciprocate in the first sliding groove 31 along the extension track of the first sliding groove 31, so as to change the position of the rotation center of the rotation connection between the anvil 10 and the cartridge assembly 30, and further change the pitch angle of the anvil 10 relative to the cartridge assembly 30, so as to adjust the forming height of the formed staples.

[0080] Optionally, the driving mechanism is configured to drive the moving piece 51 to reciprocate along the cutting direction.

[0081] In this way, the connecting pin 20 can reciprocate in the first sliding groove 31 along the extension track of the first sliding groove 31, so as to change the position of the rotation center of the rotation connection between the anvil 10 and the cartridge assembly 30, and further change the pitch angle of the anvil 10 relative to the cartridge assembly 30, so as to adjust the forming height of the formed staples between the anvil 10 and the cartridge assembly 30. In addition, the size of the driving mechanism in the extension track of the first sliding groove 31 can be reduced, and further the size of the stapler in the extension track of the first sliding groove 31 can be reduced.

[0082] In some embodiments, the driving mechanism is configured to drive the moving piece 51 to reciprocate along the extension track of the first sliding groove 31.

[0083] In this way, the connecting pin 20 can reciprocate in the first sliding groove 31 along the extension track of the first sliding groove 31, so as to change the position of the rotation center of the rotation connection between the anvil 10 and the cartridge assembly 30, and further change the pitch angle of the anvil 10 relative to the cartridge assembly 30, so as to adjust the forming height of the formed staples between the anvil 10 and the cartridge assembly 30. In addition, the size of the driving mechanism in the cutting direction can be reduced, and further the size of the stapler in the cutting direction can be reduced.

[0084] Please refer to Figure 2 , Figure 10 , Figure 11 , Figure 12 and Figure 13 , Figure 12 is a structural schematic view of the connecting piece 54 in the adjusting component 50 shown in Figure 10 , Figure 13 is a structural schematic view of the knob 53 in the adjusting component 50 shown in Figure 10 .

[0085] In some of the embodiments, the anastomat end effector 100 further comprises a handle housing 52; the driving mechanism comprises a knob 53 rotatably arranged on the handle housing 52, the knob 53 is in transmission connection with the moving piece 51, and rotating the knob 53 relative to the handle housing 52 can drive the moving piece 51 to reciprocate.

[0086] By using the above scheme, the driving mechanism can be relatively simple, and the moving piece 51 can also be driven to reciprocate.

[0087] Optionally, the driving mechanism further comprises a connecting piece 54 connected with the moving piece 51, the connecting piece 54 is movably connected in the handle housing 52, and the connecting piece 54 is provided with a third sliding groove 541; the knob 53 is provided with a connecting column 531 arranged in the third sliding groove 541, and when the knob 53 is rotated relative to the handle housing 52, the connecting column 531 can reciprocate in the third sliding groove 541, so that the connecting piece 54 reciprocates and drives the moving piece 51 to reciprocate. In this way, the moving piece 51 can be conveniently driven to reciprocate.

[0088] Optionally, in order to avoid free rotation of the knob 53 under the action of no external force, the knob 53 comprises a driving knob 53a and a driving cam 53b, the driving mechanism further comprises a locking bead 55 assembly and an elastic piece 56, the driving knob 53a is connected with the driving cam 53b (such as through a pin or through a screw), the driving cam 53b is provided with a bead clamping groove 532, and when the user twists the driving knob 53a to drive the driving cam 53b to rotate, the locking bead 55 is separated from the bead clamping groove 532 under the action of the torque and presses the elastic piece 56, and when the locking bead 55 enters the next bead clamping groove 532, the operator releases the driving knob 53a, the pressing force generated by the elastic piece 56 makes the bead assembly locked in the next bead clamping groove 532, and then the positions of the driving knob 53a and the connecting piece 54 are locked.

[0089] Optionally, the connecting piece 54 can be connected with the moving piece 51 through a connecting rod (not shown in the figure).

[0090] It can be understood that since the elastic piece 56 abuts against the locking bead 55 to make the locking bead 55 located in one of the bead clamping grooves 532, the knob 53 will not be free to rotate under the action of no external force, and when it is needed to rotate the knob 53, it is only needed to rotate the driving knob 53a relative to the handle housing 52 and move the locking bead 55 to another bead clamping groove 532.

[0091] It should be noted that the elastic piece 56 can be a spring, a rubber with elasticity or a silica gel with elasticity, etc., one end of the elastic piece 56 abuts against the locking bead 55, and the other end of the elastic piece 56 can abut against the handle housing 52.

[0092] In the embodiment, the knob 53 comprises a rotating shaft 533, and the driving cam 53b is rotatably arranged on the handle shell 52 through the rotating shaft 533.

[0093] Please refer to Figure 1 , Figure 3 and Figure 14 In some embodiments, the cutting member 40 comprises a cutting part 41 and a limiting part 42, the cutting part 41 is used for cutting the tissue along the cutting direction, the limiting part 42 abuts against the side of the anvil 10 which is away from the cartridge assembly 30, and the adjusting member 50 is used for driving the connecting pin 20 to reciprocally slide along the extension track of the first sliding groove 31 in the first sliding groove 31, so that the anvil 10 rotates with the limiting part 42 as the fulcrum.

[0094] It can be understood that when the anvil 10 rotates with the limiting part 42 as the fulcrum, different parts of the anvil 10 contact the limiting part 42.

[0095] By using the above scheme, the position of the rotation center of the anvil 10 relative to the cartridge assembly 30 can be changed by driving the connecting pin 20 to reciprocally slide along the extension track of the first sliding groove 31 in the first sliding groove 31 through the adjusting member 50, and then the pitch angle of the anvil 10 relative to the cartridge assembly 30 can be changed, so that the forward (the forward direction is the direction towards the distal end of the cartridge 33) anvil 10 with the limiting part 42 as the fulcrum also has a pitch angle relative to the cartridge assembly 30, thereby realizing the adjustment of the forming height of the staple.

[0096] Optionally, the limiting part 42 is provided with a circular arc surface 421, and the circular arc surface 421 abuts against the side of the anvil 10 which is away from the cartridge assembly 30, and at least part of the circular arc surface 421 is the fulcrum.

[0097] Optionally, the anvil 10 is provided with a first sliding channel 12, and the limiting part 42 can move in the first sliding channel 12 along a direction parallel to the cutting direction, and the limiting part 42 abuts against the inner wall surface of the first sliding channel 12 close to the cartridge assembly 30.

[0098] It can be understood that when the anvil 10 rotates with the circular arc surface 421 of the limiting part 42 as the fulcrum, different parts of the anvil 10 contact the circular arc surface 421.

[0099] Specifically, please refer to Figure 7 , and Figure 8 and Figure 9 The forming staple height H of the staple on the tissue on the anastomosis is related to the distance between the pushing surface of the pusher 35 in the cartridge assembly 30 and the forming surface of the anvil 10, and when the adjustment is not performed, the forming staple height of the staple on the tissue on the anastomosis is H, which is the standard forming staple height.

[0100] When it is necessary to increase the height of the forming nail, simply move the connecting pin 20 in the first groove 31 towards the nail cartridge assembly 30 by adjusting the component 50 (e.g., Figure 8 The anvil 10 is moved in the direction indicated by the arrow M, so that it is tilted at a certain angle relative to the staple cartridge assembly 30, forming a positive tilt angle. At this time, the forming position of the matching staple is in front of the tangent point between the arc surface 421 and the anvil 10, and is a distance X away from it. At the same time, the distance L between the tangent point between the arc surface 421 and the anvil 10 and the connecting pin 20 along the cutting direction is 421. The connecting pin 20 is moved downward by a distance Δh relative to the initial position (the position without adjustment). The relationship between the adjusted forming staple height H' and the distance X, the standard forming staple height H, the distance L, and the distance Δh is: H' = H + X * Δh / L.

[0101] When it is necessary to reduce the height of the forming nail, simply move the connecting pin 20 in the first groove 31 towards the anvil 10 by adjusting the component 50 (e.g., Figure 9 The anvil 10 moves in the direction indicated by the arrow N, causing it to tilt down at a certain angle relative to the staple cartridge assembly 30, forming a negative tilt angle. At this time, the forming position of the matching staple is located in front of the tangent point between the arc surface 421 and the anvil 10, and is a distance X away from it. At the same time, the distance L between the tangent point between the arc surface 421 and the anvil 10 and the connecting pin 20 along the cutting direction is 421. The connecting pin 20 moves upward by a distance Δh relative to its initial position (the position without adjustment). The relationship between the adjusted forming staple height H'' and the distance X, the standard forming staple height H, the distance L, and the distance Δh is: H'' = HX * Δh / L.

[0102] Please refer to Figure 1 , Figure 3 , Figure 6 , Figure 14 , Figure 15 and Figure 16 , Figure 15 yes Figure 3 The diagram shows the structure of the wedge block 34 in the end actuator 100 of the stapler. Figure 16 yes Figure 3 A schematic diagram of the pusher 35 in the end actuator 100 of the stapler shown.

[0103] In the embodiment, the staple cartridge assembly 30 further comprises a wedge 34 and a pusher 35 arranged inside the staple cartridge 33, the staple cartridge 33 is provided with a second sliding groove 331, the wedge 34 is provided with a first inclined surface 341, a flat surface 342, a second inclined surface 343 and a third inclined surface 344 arranged in sequence and connected along the cutting direction, and the pusher 35 is provided with a pusher groove 351 and a bearing surface 352. When the cutting member 40 moves in the second sliding groove 331 along the cutting direction and cuts the tissue, the wedge 34 in the staple cartridge assembly 30 is synchronously moved in the second sliding groove 331, the bearing surface 352 of the pusher 35 is in contact with the third inclined surface 344, the second inclined surface 343, the flat surface 342 and the first inclined surface 341 in sequence, so that the pusher 35 is lifted, stabilized and lowered relative to the staple cartridge 33, and the pusher groove 351 bearing the anastomosis needle pushes the anastomosis needle out of the staple cartridge 33, and the anastomosis needle is formed by abutting against the anvil 10 after penetrating the tissue.

[0104] The wedge 34 can have four side wing plate features.

[0105] Please refer to Figures 1 to 16 The embodiment of the present application provides an anastomat end execution mechanism 100, which comprises an anvil 10, a staple cartridge assembly 30, a cutting member 40, an adjusting component 50 and a handle shell 52.

[0106] The anvil 10 is connected with a connecting pin 20;

[0107] The staple cartridge assembly 30 comprises a staple cartridge base 32 and a staple cartridge 33 arranged on the staple cartridge base 32, and the staple cartridge base 32 is provided with a first sliding groove 31, and the connecting pin 20 is slidably arranged in the first sliding groove 31;

[0108] The cutting member 40 is used for cutting the tissue along a cutting direction, and the cutting direction intersects with an extension track of the first sliding groove 31, and the cutting member 40 comprises a cutting part 41 and a limiting part 42, the cutting part 41 is used for cutting the tissue along the cutting direction, and the limiting part 42 is provided with a circular arc surface 421 abutting against a side of the anvil 10 away from the staple cartridge assembly 30.

[0109] The adjusting component 50 is connected with the connecting pin 20, and the adjusting component 50 is used for driving the connecting pin 20 to reciprocate in the first sliding groove 31 along the extension track of the first sliding groove 31, so that the anvil 10 rotates around the at least partial circular arc surface 421 as a fulcrum and changes a position of a rotation center of the anvil 10 relative to the staple cartridge assembly 30.

[0110] The adjusting component 50 comprises a moving piece 51 and a driving mechanism. The moving piece 51 is provided with a second sliding groove 511, the extension track of the second sliding groove 511 is arranged at an angle with the extension track of the first sliding groove 31, and the connecting pin 20 is slidably arranged in the second sliding groove 511; the driving mechanism is used to drive the moving piece 51 to reciprocate, so that the connecting pin 20 reciprocates along the extension track of the first sliding groove 31 in the first sliding groove 31.

[0111] The driving mechanism comprises a knob 53 and a connecting piece 54 connected with the moving piece 51. The knob 53 is rotatably arranged on a handle housing 52, the connecting piece 54 is movably connected in the handle housing 52, and the connecting piece 54 is provided with a third sliding groove 541; the knob 53 is provided with a connecting column 531 arranged in the third sliding groove 541, when the knob 53 is rotated relative to the handle housing 52, the connecting column 531 reciprocates in the third sliding groove 541, so that the connecting piece 54 reciprocates and drives the moving piece 51 to reciprocate.

[0112] The end execution mechanism 100 of the anastomat provided in the embodiment of the present application, since the anvil 10 is connected with the connecting pin 20, the cartridge assembly 30 is provided with the first sliding groove 31, the connecting pin 20 is slidably arranged in the first sliding groove 31, and the cutting piece 40 is used to cut the tissue along the cutting direction, the cutting direction intersects with the extension track of the first sliding groove 31, and the adjusting component 50 is connected with the connecting pin 20, so when the thickness of the tissue in the anastomosis area changes obviously, the connecting pin 20 can be driven by the adjusting component 50 to reciprocate along the extension track of the first sliding groove 31 in the first sliding groove 31, so as to change the position of the rotation center of the anvil 10 relative to the rotation connection of the cartridge assembly 30, and then the pitch angle of the anvil 10 relative to the cartridge assembly 30 can be changed, so as to adjust the height of the anastomosis nail formed between the anvil 10 and the cartridge assembly 30, that is, the end execution mechanism 100 of the anastomat provided in the embodiment of the present application can flexibly adjust the forming nail height of the anastomosis nail according to the change of the tissue thickness in the anastomosis process according to the different thicknesses of different parts of the tissue in the anastomosis area.

[0113] In the second aspect, the embodiment of the present application provides an anastomat, which comprises the end execution mechanism 100 of the anastomat according to the first aspect.

[0114] The anastomat provided by the embodiments of the present application has the connecting pin 20 connected to the anvil 10, the first sliding groove 31 provided in the cartridge assembly 30, the connecting pin 20 slidably arranged in the first sliding groove 31, the cutting member 40 used for cutting the tissue along the cutting direction, the cutting direction intersecting with the extension track of the first sliding groove 31, and the adjusting component 50 connected to the connecting pin 20. Therefore, when the thickness of the tissue in the anastomosis area changes significantly, the adjusting component 50 can drive the connecting pin 20 to reciprocally slide along the extension track of the first sliding groove 31 in the first sliding groove 31, so as to change the position of the rotation center of the anvil 10 relative to the cartridge assembly 30, and further change the pitch angle of the anvil 10 relative to the cartridge assembly 30, so as to adjust the height of the anastomosis staple formed between the anvil 10 and the cartridge assembly 30. That is, the anastomat provided by the embodiments of the present application can flexibly adjust the forming height of the anastomosis staple according to the change of the tissue thickness during the anastomosis process according to the different thicknesses of different parts of the tissue in the anastomosis area.

[0115] It should be noted that the anastomat further includes a handle portion (not shown in the figure) and a shaft assembly (not shown in the figure). The handle portion can control the movement of the cutting member 40 along the cutting direction and the direction opposite to the cutting direction through the shaft assembly. The handle portion can also control the movement of the cartridge assembly 30 and the anvil 10 through the shaft assembly, and control the opening and closing of the jaw, etc.

[0116] It can be understood that the adjusting component 50 can be arranged in the interior of the handle portion.

[0117] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones. The modification or replacement does not change the essence of the corresponding technical solutions, and should be included in the protection scope of the present application.

Claims

1. A stapler end actuator, characterized in that, include: Anvil, connected with a connecting pin; The staple cartridge assembly is provided with a first groove, and the connecting pin is slidably disposed in the first groove; A cutting component, comprising a cutting part and a limiting part, wherein the cutting part is used to cut tissue along a cutting direction, and the limiting part abuts against the side of the anvil away from the staple cartridge assembly, and the cutting direction intersects the extension trajectory of the first groove; The adjusting component includes a moving part and a driving mechanism. The moving part is provided with a second slide groove, the extension trajectory of which is set at an angle to the extension trajectory of the first slide groove. The connecting pin is slidably inserted into the second slide groove. The driving mechanism is used to drive the moving part to reciprocate, so that the connecting pin slides vertically back and forth in the first slide groove along the extension trajectory of the first slide groove towards the anvil and towards the staple cartridge assembly, so that the anvil rotates around the limiting part as a fulcrum, thereby changing the position of the rotation center of the anvil relative to the staple cartridge assembly.

2. The anastomosis device end actuator according to claim 1, characterized in that, The driving mechanism is used to drive the moving part to reciprocate along the cutting direction.

3. The anastomosis device end actuator according to claim 1, characterized in that, The driving mechanism is used to drive the moving part to move vertically back and forth along the extension trajectory of the first groove in the direction of approaching the anvil and the direction of approaching the staple cartridge assembly.

4. The anastomosis device end actuator according to claim 1, characterized in that, The end actuator of the stapler also includes a handle housing; The drive mechanism includes: A knob is rotatably mounted on the handle housing, and the knob is provided with a connecting post; A connector is connected to the movable component. The connector is movably connected to the handle housing. The connector has a third sliding groove, and the connecting post is located in the third sliding groove. When the knob is rotated relative to the handle housing, the connecting post can slide vertically back and forth in the third sliding groove, thereby causing the connector to slide back and forth and driving the movable component to move back and forth.

5. The anastomosis device end actuator according to any one of claims 1 to 4, characterized in that, The staple cartridge assembly includes a staple cartridge base and a staple cartridge disposed on the staple cartridge base, wherein the first groove is disposed on the staple cartridge base.

6. The anastomosis device end actuator according to claim 1, characterized in that, The limiting part has an arc surface, which abuts against the side of the anvil away from the nail cartridge assembly, and at least part of the arc surface is the fulcrum.

7. A stapler, characterized in that, The stapler includes a stapler end actuator as described in any one of claims 1 to 6.

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