Anastomat end executing mechanism and anastomat

Abstract

The invention relates to the technical field of medical suture instruments, and discloses an anastomat end executing mechanism and an anastomat, and the anastomat end executing mechanism comprises a nail anvil connected with a connecting pin; the nail bin assembly is provided with a first sliding groove, and the connecting pin is arranged in the first sliding groove in a sliding mode; the cutting piece is used for cutting tissue in the first direction, and the first direction intersects with the extending track of the first sliding groove; the adjusting part is connected with the connecting pin, and the adjusting part is used for driving the connecting pin to slide in the first sliding groove in a reciprocating mode along the extending track of the first sliding groove so as to change the position of the nail anvil relative to the rotating center of rotating connection of the nail bin assembly. According to the anastomat end executing mechanism and the anastomat, the forming nail height of the anastomosis nails can be flexibly adjusted according to different tissue thicknesses in the anastomosis area.

Description

Technical Field

[0001] The present application relates to the technical field of medical suturing equipment, and in particular to an end actuator of a stapler and a stapler. Background Art

[0002] In the clinical application of laparoscopic linear cutting staplers, for anastomosis of different tissue thicknesses, the operator will use experience to select a stapler with a forming nail height that can appropriately match the tissue thickness for anastomosis. The adaptability of a stapler's forming nail height to tissue thickness is particularly important. If the forming nail height is too low, the stapler's firing force will be too large, which will cause inconvenience for the operator and increase clinical risks. If the forming nail height is too low, the blood supply capacity will be reduced, thereby affecting tissue healing. If the forming nail height is too high, the tissue suture will not be tight, and the chance of tissue bleeding and fistula will increase.

[0003] When the thickness of some tissues in the anastomotic area changes significantly, the traditional stapler cannot flexibly adjust the height of the formed staples according to the different tissue thicknesses in the anastomotic area. Summary of the invention

[0004] The present application provides a stapler end actuator and a stapler, which can flexibly adjust the formed staple height of the staples according to different tissue thicknesses in the stapled area.

[0005] In a first aspect, an embodiment of the present application provides a stapler end actuator, comprising:

[0006] an anvil connected with a connecting pin;

[0007] The nail magazine assembly is provided with a first slide groove, and the connecting pin is slidably arranged in the first slide groove;

[0008] a cutting member, for cutting tissue along a first direction, wherein the first direction intersects with an extension track of the first slideway;

[0009] An adjusting component is connected to the connecting pin, and is used to drive the connecting pin to slide back and forth in the first sliding groove along the extension track of the first sliding groove to change the position of the rotation center of the anvil relative to the rotational connection of the nail magazine assembly.

[0010] The stapler end actuator provided in the embodiment of the present application has the beneficial effect that: since the anvil is connected to the connecting pin, the stapler assembly is provided with a first slide groove, the connecting pin can be slidably arranged in the first slide groove, and the cutting piece is used to cut the tissue along a first direction, the first direction intersects with the extension trajectory of the first slide groove, and the adjusting component is connected to the connecting pin. Therefore, when the thickness of the tissue in the anastomosis area shows a significant change, the connecting pin can be driven by the adjusting component to slide back and forth in the first slide groove along the extension trajectory of the first slide groove to change the position of the rotation center of the rotation connection of the anvil relative to the stapler assembly, and then the pitch angle of the anvil relative to the stapler assembly can be changed to adjust the height of the staples formed between the anvil and the stapler assembly, that is, the stapler end actuator provided in the embodiment of the present application can flexibly adjust the formed staple height of the staples according to the change of tissue thickness during the anastomosis process according to the different thicknesses of different parts of the tissue in the anastomosis area.

[0011] In some of the embodiments, the adjusting component includes:

[0012] The moving member is provided with a second slide groove, the extension track of the second slide groove is arranged at an angle with the extension track of the first slide groove, and the connecting pin is slidably inserted into the second slide groove;

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

[0014] In some embodiments, the driving mechanism is used to drive the moving member to reciprocate along the first direction.

[0015] In some embodiments, the driving mechanism is used to drive the moving member to reciprocate along an extension track of the first sliding slot.

[0016] In some of the embodiments, the stapler end effector further comprises a handle housing;

[0017] The driving mechanism comprises:

[0018] The knob is rotatably disposed on the handle housing, and the knob is transmission-connected to the moving member. The moving member can be driven to move back and forth by rotating the knob relative to the handle housing.

[0019] In some of the embodiments, the driving mechanism also includes a connecting member connected to the moving member, the connecting member is movably connected in the handle shell, and the connecting member is provided with a third slide groove; a connecting column is provided on the knob, and the connecting column is provided in the third slide groove. When the knob is rotated relative to the handle shell, the connecting column can slide back and forth in the third slide groove, thereby causing the connecting member to slide back and forth and drive the moving member to move back and forth.

[0020] In some of the embodiments, the nail magazine assembly includes a nail magazine base and a nail magazine disposed on the nail magazine base, and the first sliding groove is disposed on the nail magazine base.

[0021] In some embodiments, the cutting member includes a cutting portion and a limiting portion, the cutting portion is used to cut tissue along the first direction, the limiting portion is abutted against a side of the anvil facing away from the nail magazine assembly, and the adjusting component is used to drive the connecting pin to slide back and forth in the first sliding groove along an extension trajectory of the first sliding groove, so that the anvil rotates with the limiting portion as a fulcrum.

[0022] In some embodiments, the limiting portion is provided with an arc surface, the arc surface abuts against a side of the anvil facing away from the nail magazine assembly, and at least a portion of the arc surface serves as the fulcrum.

[0023] In a second aspect, an embodiment of the present application provides a stapler, which includes the stapler end actuator as described in the first aspect.

[0024] The stapler provided in the embodiment of the present application has the beneficial effect that: since the anvil is connected to the connecting pin, the staple cartridge assembly is provided with a first slide groove, the connecting pin can be slidably arranged in the first slide groove, and the cutting piece is used to cut the tissue along a first direction, the first direction intersects with the extension trajectory of the first slide groove, and the adjusting component is connected to the connecting pin. Therefore, when the thickness of the tissue in the anastomosis area shows a significant change, the connecting pin can be driven by the adjusting component to slide back and forth in the first slide groove along the extension trajectory of the first slide groove to change the position of the rotation center of the rotational connection of the anvil relative to the staple cartridge assembly, and then the pitch angle of the anvil relative to the staple cartridge assembly can be changed to adjust the height of the staples formed between the anvil and the staple cartridge assembly, that is, the stapler provided in the embodiment of the present application can flexibly adjust the formed staple height of the staples according to the different thicknesses of different parts of the tissue in the anastomosis area during the anastomosis process according to the changes in tissue thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a partial structural schematic diagram of the end actuator of the stapler in one of the embodiments of the present application;

[0027] Figure 2 yes Figure 1This is a partial structural diagram of an adjusting component in one of the embodiments of the present application;

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

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

[0030] Figure 5 yes Figure 3 A schematic structural diagram of a nail magazine base in a nail magazine assembly shown;

[0031] Figure 6 yes Figure 3 A schematic structural diagram of a nail magazine in a nail magazine assembly shown;

[0032] Figure 7 yes Figure 1 A schematic structural diagram of a stapler end actuator when the rotation center of the anvil in the stapler end actuator is not adjusted relative to the staple cartridge assembly;

[0033] Figure 8 Yes Figure 7 The structure diagram of the anvil after the rotation center of the rotation connection with respect to the nail magazine assembly is adjusted toward the direction close to the nail magazine assembly;

[0034] Fig. 9 Yes Figure 7 A schematic diagram of the structure of the anvil after the rotation center of the rotational connection of the nail magazine assembly is adjusted toward the direction close to the anvil;

[0035] Fig.10 yes Figure 2 The schematic diagram of the internal structure of the regulating component shown;

[0036] Fig.11 yes Figure 2 A schematic diagram of the internal structure of the adjusting component from another perspective shown;

[0037] Fig.12 yes Fig.10 A schematic diagram of the structure of the connecting member in the regulating component shown;

[0038] Fig.13 yes Fig.10 A schematic diagram of the structure of the knob in the adjustment component shown;

[0039] Fig.14 yes Figure 3 A schematic diagram of the structure of the cutting member in the end actuator of the stapler shown;

[0040] Fig.15 yes Figure 3 A schematic diagram of the structure of a wedge block in an end actuator of a stapler is shown;

[0041] Fig.16 yes Figure 3 The schematic diagram of the structure of the stapler in the end actuator of the stapler is shown.

[0042] The meanings of the marks in the figure are:

[0043] 100. Stapler end actuator;

[0044] 10. nail anvil; 11. pin hole; 12. first slideway;

[0045] 20. Connecting pin;

[0046] 30. Nail magazine assembly; 31. First slide; 32. Nail magazine base; 33. Nail magazine; 331. Second slide; 34. Wedge block; 341. First inclined surface; 342. Plane; 343. Second inclined surface; 344. Third inclined surface; 35. Nail pusher; 351. Nail pusher groove; 352. Supporting surface;

[0047] 40. Cutting pieces;

[0048] 41. cutting portion; 42. limiting portion; 421. arc surface;

[0049] 50. Adjustment components;

[0050] 51. Moving part; 511. Second slide groove; 52. Handle housing; 53. Knob; 53a. Driving knob; 53b. Driving cam; 531. Connecting column; 532. Ball-moving card slot; 533. Rotating shaft; 54. Connecting part; 541. Third slide groove; 55. Locking ball; 56. Elastic part. DETAILED DESCRIPTION

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

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed 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" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0055] In the clinical application of laparoscopic linear cutting staplers, for anastomosis of different tissue thicknesses, the operator will use experience to select a stapler with a forming nail height that can appropriately match the tissue thickness for anastomosis. The adaptability of a stapler's forming nail height to tissue thickness is particularly important. If the forming nail height is too low, the stapler's firing force will be too large, which will cause inconvenience for the operator and increase clinical risks. If the forming nail height is too low, the blood supply capacity will be reduced, thereby affecting tissue healing. If the forming nail height is too high, the tissue suture will not be tight, and the chance of tissue bleeding and fistula will increase.

[0056] When the thickness of some tissues in the anastomosis area changes significantly, the traditional stapler cannot flexibly adjust the height of the stapler according to the different tissue thicknesses in the anastomosis area. Due to the complexity of patient differences, the selection of staplers can easily cause trouble for the operator in the following application scenarios:

[0057] 1. When the patient's tissue thickness is at the critical value of the applicable range of the two stapler forming nails, it is difficult for the operator to accurately determine the appropriate stapler;

[0058] 2. For some tissues, such as the stomach, lungs, liver, etc., when the thickness of the tissues varies significantly within the region, the single formed nail height feature of a certain stapler cannot match the entire anastomosis area well.

[0059] In order to solve the above problems, the present application provides a stapler end actuator and a stapler, which can flexibly adjust the formed staple height of the staples according to the different tissue thicknesses in the stapled area.

[0060] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0061] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a partial structural diagram of a stapler end actuator 100 in one embodiment of the present application. Figure 2 yes Figure 1 This is a partial structural diagram of an adjusting component 50 in one embodiment of the present application. Figure 3 yes Figure 1 The internal structure diagram of the stapler end actuator 100 is shown.

[0062] In the first aspect, the embodiment of the present application provides a stapler end actuator 100, including an anvil 10, a staple cartridge assembly 30, a cutting member 40 and an adjusting member 50. The anvil 10 is connected to a connecting pin 20; the staple cartridge assembly 30 is provided with a first slide groove 31, and the connecting pin 20 is slidably arranged in the first slide groove 31; the cutting member 40 is used to cut tissue along a first direction, and the first direction intersects with the extension track of the first slide groove 31; the adjusting member 50 is connected to the connecting pin 20, and the adjusting member 50 is used to drive the connecting pin 20 to slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31, so as to change the position of the rotation center of the anvil 10 relative to the rotational connection of the staple cartridge assembly 30.

[0063] It should be noted that the anvil 10 can be fixedly or rotatably connected (such as hinged) to the connecting pin 20. For example, please refer to Figure 4 , Figure 4 yes Figure 1 The structural schematic diagram of the anvil 10 of the stapler end actuator 100 shown in the figure shows that a pin hole 11 may be provided on the anvil 10 , and a connecting pin 20 is fixedly or rotatably penetrated through the pin hole 11 .

[0064] The interior of the staple cartridge assembly 30 is used to set staples (not shown in the figure). Figure 5 and Figure 6 , Figure 5 yes Figure 3 The structural schematic diagram of the nail magazine base 32 in the nail magazine assembly 30 is shown. Figure 6 yes Figure 3 The structural schematic diagram of the nail magazine 33 in the nail magazine assembly 30 shown in the figure, the nail magazine assembly 30 may include a nail magazine base 32 and a nail magazine 33 arranged on the nail magazine base 32, the first slide groove 31 is arranged on the nail magazine base 32, and the interior of the nail magazine 33 is used to set the anastomosis staples.

[0065] It is understandable that when the cutting member 40 cuts the tissue along the first direction, the staples can rise from the inside of the staple cartridge assembly 30 to penetrate the tissue and then abut against the staple anvil 10 to complete the tissue anastomosis process. Figure 7 , Figure 7 yes Figure 1 The structure diagram shown is a schematic diagram of the anvil 10 in the stapler end actuator 100 when the rotation center of the rotation connection relative to the staple magazine assembly 30 is not adjusted. The formed staple height H of the staple is related to the distance between the staple pushing surface of the staple pusher 35 for supporting the staples in the staple magazine assembly 30 and the surface (nail forming surface) of the anvil 10 close to the staple magazine 33. The rotation center of the rotation connection of the anvil 10 relative to the staple magazine 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 nail magazine surface of the nail magazine 33 close to the anvil 10 and the surface of the anvil 10 close to the nail magazine 33 (nail forming surface) are parallel. At this time, the distance between the nail pushing surface of the nail pusher 35 and the surface of the anvil 10 close to the nail magazine 33 (nail forming surface) constitutes the nail forming height H which is the standard forming nail height.

[0067] It should also be noted that the adjustment component 50 may include a telescopic cylinder or a linear module, for example, when the adjustment component 50 includes a telescopic cylinder, the telescopic end of the telescopic cylinder is connected to the connecting pin 20. When the adjustment component 50 includes a linear module, the linear module includes a ball screw, a motor and a slider, and the motor drives the ball screw to rotate so that the slider moves along the axis of the ball screw on the ball screw, and the slider is connected to the connecting pin 20. The extension trajectory of the first slide groove 31 is not parallel to the first direction, and the first direction is the direction from the proximal end of the stapler to the distal end of the stapler. In this embodiment, the extension trajectory of the first slide groove 31 intersects with the first direction.

[0068] Among them, the extension trajectory of the first slide groove 31 can be a straight line or a curve, that is, the first slide groove 31 can be a straight groove or an arc-shaped groove. For example, the extension trajectory of the first slide groove 31 can be an arc concave toward the distal direction of the nail magazine 33, that is, the first slide groove 31 is an arc-shaped groove; or, the extension trajectory of the first slide groove 31 can be a straight line set at an angle to the first direction, that is, the first slide groove 31 is a straight groove.

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

[0070] Please refer to Figure 8 , Figure 8 Yes Figure 7The structure diagram of the anvil 10 after the rotation center of the rotation connection with respect to the nail magazine assembly 30 is adjusted toward the direction close to the nail magazine assembly 30, when it is necessary to increase the height of the formed nail, it is only necessary to drive the connecting pin 20 to move in the first slide groove 31 toward the direction close to the nail magazine assembly 30 (such as Figure 8 By moving in the direction indicated by the arrow M in the middle), the distal end of the anvil 10 is tilted up at a certain angle relative to the nail magazine assembly 30, forming a positive inclination angle, so that the distance between the nail magazine surface of the nail magazine 33 close to the anvil 10 and the surface of the anvil 10 close to the nail magazine 33 (nail forming surface) can be increased, thereby increasing the distance between the nail pushing surface of the nail pusher 35 and the nail forming surface of the anvil 10, thereby increasing the height of the formed nails.

[0071] Please refer to Fig. 9 , Fig. 9 Yes Figure 7 The structure diagram of the anvil 10 after the rotation center of the rotation connection with the nail magazine assembly 30 is adjusted toward the direction close to the anvil 10, when it is necessary to reduce the height of the formed nail, it is only necessary to drive the connecting pin 20 to move in the first slide groove 31 toward the direction close to the anvil 10 (such as Fig. 9 By moving in the direction indicated by the arrow N in the figure, the anvil 10 is made to bend down at a certain angle relative to the nail magazine assembly 30, forming a negative inclination angle, so that the distance between the nail magazine surface of the nail magazine 33 close to the anvil 10 and the nail forming surface of the anvil 10 can be reduced, thereby reducing the distance between the nail pushing surface of the nail pusher 35 and the nail forming surface of the anvil 10, thereby reducing the height of the formed nails.

[0072] The stapler end actuator 100 provided in the embodiment of the present application has a connecting pin 20 connected to the anvil 10, a first slide groove 31 provided in the stapler cartridge assembly 30, the connecting pin 20 is slidably disposed in the first slide groove 31, and the cutting member 40 is used to cut tissue along a first direction, the first direction intersects with the extension track of the first slide groove 31, and the adjusting component 50 is connected to the connecting pin 20. Therefore, when the tissue thickness in the stapled area changes significantly, the connecting pin 20 can be driven by the adjusting component 50 to slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31 to change the anvil. 10 is rotatably connected with the position of the rotation center of the anvil 10 relative to the staple cartridge assembly 30, thereby being able to change the pitch angle of the anvil 10 relative to the staple cartridge assembly 30, so as to adjust the distance between the staple cartridge surface of the staple cartridge 33 close to the anvil 10 and the staple forming surface of the anvil 10, thereby being able to adjust the distance between the staple pushing surface of the staple pusher 35 and the staple forming surface of the anvil 10, and thereby being able to adjust the formed staple height, that is, the stapler end actuator 100 provided in the embodiment of the present application can flexibly adjust the formed staple height of the staples according to the change in tissue thickness during the anastomosis process according to the different thicknesses of different parts of the tissue in the anastomosis area.

[0073] The stapler end actuator 100 provided in the embodiment of the present application can be applicable to a laparoscopic linear cutting stapler, and can help the operator flexibly adjust the formed staple height of the staplers according to actual conditions when dealing with complex anastomosis procedures, thereby greatly reducing surgical risks.

[0074] Optionally, in order to prevent the anvil 10 from moving relative to the staple cartridge assembly 30 in the first direction after the pitch angle of the anvil 10 relative to the staple cartridge assembly 30 is changed to adjust the distance between the staple cartridge surface of the staple cartridge 33 close to the anvil 10 and the staple forming surface of the anvil 10, the extension track of the first slide groove 31 may be an arc concave toward the distal end of the staple cartridge 33, that is, the first slide groove 31 is an arc-shaped groove. In this way, when the adjusting component 50 drives the connecting pin 20 to slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31, the first slide groove 31 can prevent the anvil 10 from moving relative to the staple cartridge assembly 30 in the first direction, thereby preventing the staples from failing to abut against the staple pits on the staple cartridge surface of the anvil 10 for formation.

[0075] Please refer to Figure 2 , Fig.10 and Fig.11 , Fig.10 yes Figure 2 The internal structure diagram of the adjusting component 50 is shown in FIG. Fig.11 yes Figure 2 A schematic diagram of the internal structure of the adjusting component 50 from another perspective is shown.

[0076] In some embodiments, the adjusting component 50 includes a moving member 51 and a driving mechanism. The moving member 51 is provided with a second slide groove 511, the extension track of the second slide groove 511 is arranged at an angle with the extension track of the first slide groove 31, and the connecting pin 20 is slidably inserted into the second slide groove 511; the driving mechanism is used to drive the moving member 51 to move back and forth, so that the connecting pin 20 slides back and forth in the first slide groove 31 along the extension track of the first slide groove 31.

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

[0078] The driving mechanism may include a telescopic cylinder or a linear module, for example, when the driving mechanism includes a telescopic cylinder, the telescopic end of the telescopic cylinder is connected to the moving member 51. When the driving mechanism includes a linear module, the linear module includes a ball screw, a motor and a slider, the motor drives the ball screw to rotate so that the slider moves on the ball screw along the axis direction of the ball screw, and the slider is connected to the moving member 51.

[0079] By adopting the above scheme, the connecting pin 20 can slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31 to change the position of the rotation center of the rotational connection of the anvil 10 relative to the staple magazine assembly 30, and then the pitch angle of the anvil 10 relative to the staple magazine assembly 30 can be changed to adjust the forming height of the anastomotic staples.

[0080] Optionally, the driving mechanism is used to drive the moving member 51 to reciprocate along the first direction.

[0081] Such a configuration can not only enable the connecting pin 20 to slide back and forth in the first slide groove 31 along the extension trajectory of the first slide groove 31 to change the position of the rotation center of the rotational connection of the anvil 10 relative to the staple magazine assembly 30, and further change the pitch angle of the anvil 10 relative to the staple magazine assembly 30 to adjust the forming height of the staples formed between the anvil 10 and the staple magazine assembly 30, but also reduce the size of the driving mechanism on the extension trajectory of the first slide groove 31, and further reduce the size of the stapler on the extension trajectory of the first slide groove 31.

[0082] In some of the embodiments, the driving mechanism is used to drive the moving member 51 to move back and forth along the extension track of the first sliding slot 31 .

[0083] Such a configuration enables the connecting pin 20 to slide back and forth in the first slide groove 31 along the extension trajectory of the first slide groove 31, so as to change the position of the rotation center of the rotational connection of the anvil 10 relative to the staple magazine assembly 30, thereby changing the pitch angle of the anvil 10 relative to the staple magazine assembly 30, so as to adjust the forming height of the staples formed between the anvil 10 and the staple magazine assembly 30, and also to reduce the size of the driving mechanism in the first direction, thereby reducing the size of the stapler in the first direction.

[0084] Please refer to Figure 2 , Fig.10 , Fig.11 , Fig.12 and Fig.13 , Fig.12 yes Fig.10 The schematic structural diagram of the connecting member 54 in the adjusting component 50 is shown in FIG. Fig.13 yes Fig.10 A schematic structural diagram of the knob 53 in the adjusting component 50 is shown.

[0085] In some of the embodiments, the stapler end actuator 100 also includes a handle housing 52; the driving mechanism includes a knob 53, which is rotatably disposed on the handle housing 52, and the knob 53 is transmission-connected to the moving member 51. By rotating the knob 53 relative to the handle housing 52, the moving member 51 can be driven to move back and forth.

[0086] By adopting the above solution, the driving mechanism can be made simpler, and the moving member 51 can also be driven to move back and forth.

[0087] Optionally, the driving mechanism further includes a connecting member 54 connected to the moving member 51, the connecting member 54 is movably connected to the handle housing 52, and the connecting member 54 is provided with a third slide groove 541; the knob 53 is provided with a connecting column 531, and the connecting column 531 is arranged in the third slide groove 541. When the knob 53 is rotated relative to the handle housing 52, the connecting column 531 can slide back and forth in the third slide groove 541, so that the connecting member 54 slides back and forth and drives the moving member 51 to move back and forth. With such a configuration, the moving member 51 can be driven to move back and forth more conveniently.

[0088] Optionally, in order to prevent the knob 53 from rotating freely without external force, the knob 53 includes a driving knob 53a and a driving cam 53b, and the driving mechanism also includes a locking ball 55 assembly and an elastic member 56. The driving knob 53a is connected to the driving cam 53b (such as by a pin or a screw), and the driving cam 53b is provided with a ball slot 532. When the user twists the driving knob 53a, the driving cam 53b is driven to rotate. At this time, the locking ball 55 is disengaged from the ball slot 532 by the torque and squeezes the elastic member 56. When the locking ball 55 enters the next ball slot 532, the operator releases the driving knob 53a, and the squeezing force generated by the elastic member 56 locks the ball assembly in the next ball slot 532, thereby locking the position of the driving knob 53a and the connecting member 54.

[0089] Optionally, the connecting member 54 may be connected to the moving member 51 via a connecting rod (not shown in the figure).

[0090] It can be understood that, since the elastic member 56 is in contact with the locking ball 55 so that the locking ball 55 is located in one of the ball slots 532, the knob 53 will not rotate freely without external force. When the knob 53 needs to be rotated, it is only necessary to rotate the driving knob 53a relative to the handle housing 52 to move the locking ball 55 to the other ball slot 532.

[0091] It should be noted that the elastic member 56 can be made of a spring, elastic rubber or elastic silicone, etc. One end of the elastic member 56 abuts against the locking bead 55 , and the other end of the elastic member 56 can abut against the handle housing 52 .

[0092] In this embodiment, the knob 53 includes a rotating shaft 533 , and the driving cam 53 b is rotatably disposed on the handle housing 52 via the rotating shaft 533 .

[0093] Please refer to Figure 1 , Figure 3 and Fig.14 In some embodiments, the cutting member 40 includes a cutting portion 41 and a limiting portion 42, the cutting portion 41 is used to cut tissue along a first direction, the limiting portion 42 is abutted against a side of the anvil 10 away from the nail magazine assembly 30, and the adjusting component 50 is used to drive the connecting pin 20 to slide back and forth in the first slide groove 31 along the extension trajectory of the first slide groove 31, so that the anvil 10 rotates with the limiting portion 42 as a fulcrum.

[0094] It is understandable that when the anvil 10 rotates with the limiting portion 42 as a fulcrum, the anvil 10 contacts different parts of the limiting portion 42 .

[0095] By adopting the above scheme, the connecting pin 20 can be driven by the adjusting component 50 to slide back and forth in the first slide groove 31 along the extension trajectory of the first slide groove 31, so as to change the position of the rotation center of the rotational connection of the anvil 10 relative to the staple magazine assembly 30, and then the pitch angle of the anvil 10 relative to the staple magazine assembly 30 can be changed, so that the forward direction (the forward direction is the direction toward the distal end of the staple magazine 33) of the anvil 10 with the limiting portion 42 as the fulcrum also has a pitch angle relative to the staple magazine assembly 30, thereby realizing the adjustment of the forming height of the anastomotic staples.

[0096] Optionally, the limiting portion 42 is provided with an arc surface 421 , and the arc surface 421 abuts against a side of the anvil 10 away from the nail magazine assembly 30 , and at least a portion of the arc surface 421 serves as a fulcrum.

[0097] Optionally, the anvil 10 is provided with a first slideway 12 , and the limiting portion 42 can move in the first slideway 12 in a direction parallel to the first direction, and the limiting portion 42 abuts against an inner wall surface of the first slideway 12 close to the nail magazine assembly 30 in a tangential manner.

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

[0099] For details, please refer to Figure 7 ,and Figure 8 and Fig. 9 The formed nail height H of the staples on the tissue anastomosis is related to the distance between the staple pushing surface of the staple pusher 35 in the staple magazine assembly 30 and the staple forming surface of the anvil 10. When no adjustment is made, the formed nail height of the staples on the tissue anastomosis is H, which is the standard formed nail height.

[0100] When the height of the formed nail needs to be increased, the connecting pin 20 only needs to be driven by the adjusting component 50 to move in the first sliding groove 31 toward the direction close to the nail magazine assembly 31 (such as Figure 8 The anvil 10 is tilted at a certain angle relative to the staple cartridge assembly 30, forming a positive inclination angle. At this time, the staple forming position is located in front of the tangent point between the arc surface 421 and the anvil 10 and is separated by a distance X. At the same time, the distance between the tangent point between the arc surface 421 and the anvil 10 and the connecting pin 20 along the first direction is L. The connecting pin 20 moves downward by a distance Δh relative to the initial position (the position not adjusted). The relationship between the adjusted formed staple height H' and the distance X, the standard formed staple height H, the distance L, and the distance Δh is: H'=H+X*Δh / L.

[0101] When the height of the formed nail needs to be reduced, the connecting pin 20 only needs to be driven by the adjusting member 50 to move in the first slide slot 31 toward the direction close to the nail anvil 10 (such as Fig. 9 The anvil 10 is moved in the direction indicated by the arrow N in the middle), so that the anvil 10 is bent down by a certain angle relative to the staple cartridge assembly 30, presenting a negative inclination angle. At this time, the staple forming position is located in front of the tangent point between the arc surface 421 and the anvil 10, and is separated by a distance X. At the same time, the distance between the tangent point between the arc surface 421 and the anvil 10 and the connecting pin 20 along the first direction is L, and the connecting pin 20 moves upward by a distance Δh relative to the initial position (the position without adjustment). Then, the relationship between the adjusted formed staple height H" and the distance X, the standard formed 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 , Fig.14 , Fig.15 and Fig.16 , Fig.15 yes Figure 3 The schematic diagram of the structure of the wedge block 34 in the stapler end actuator 100 is shown in FIG. Fig.16 yes Figure 3 The structure diagram of the stapler pusher 35 in the stapler end actuator 100 is shown.

[0103] In this embodiment, the nail magazine assembly 30 further includes a wedge block 34 and a nail pusher 35 disposed inside the nail magazine 33. A second slideway 331 is disposed inside the nail magazine 33. The wedge block 34 is provided with a first inclined surface 341, a plane 342, a second inclined surface 343 and a third inclined surface 344 which are sequentially arranged and connected along a first direction. The nail pusher 35 is provided with a nail pushing groove 351 and a supporting surface 352. When the cutting member 40 moves in the second slideway 331 along the first direction and cuts the nail magazine 33, the nail magazine 33 is provided with a second slideway 331. During weaving, the cutting piece 40 pushes the wedge block 34 in the staple magazine assembly 30 to move synchronously in the second slideway 331, and the supporting surface 352 of the staple pusher 35 contacts the third inclined surface 344, the second inclined surface 343, the plane 342 and the first inclined surface 341 in sequence, so that the staple pusher 35 rises, stabilizes and falls relative to the staple magazine 33, and pushes the staples out of the staple magazine 33 through the staple pushing groove 351 that supports the staples. After penetrating the tissue, the staples are abutted against the anvil 10 to form.

[0104] Among them, the wedge block 34 may have four side wing plate features.

[0105] Please refer to Figures 1 to 16 The embodiment of the present application provides a stapler end actuator 100 , including an anvil 10 , a staple cartridge assembly 30 , a cutting member 40 , an adjustment member 50 , and a handle housing 52 .

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

[0107] The nail magazine assembly 30 includes a nail magazine base 32 and a nail magazine 33 disposed on the nail magazine base 32. The nail magazine base 32 is provided with a first slide groove 31, and the connecting pin 20 is slidably disposed in the first slide groove 31;

[0108] The cutting member 40 is used to cut tissue along a first direction, and the first direction intersects with the extension trajectory of the first slide groove 31. The cutting member 40 includes a cutting portion 41 and a limiting portion 42. The cutting portion 41 is used to cut tissue along the first direction, and the limiting portion 42 is provided with an arc surface 421, which abuts against the side of the anvil 10 away from the nail magazine assembly 30.

[0109] The adjusting component 50 is connected to the connecting pin 20, and is used to drive the connecting pin 20 to slide back and forth in the first sliding groove 31 along the extension track of the first sliding groove 31, so that the anvil 10 rotates with at least part of the arc surface 421 as a fulcrum, and changes the position of the rotation center of the anvil 10 relative to the nail magazine assembly 30.

[0110] The adjusting component 50 includes a moving member 51 and a driving mechanism. The moving member 51 is provided with a second slide groove 511, the extension track of the second slide groove 511 is set at an angle with the extension track of the first slide groove 31, and the connecting pin 20 is slidably inserted into the second slide groove 511; the driving mechanism is used to drive the moving member 51 to move back and forth, so that the connecting pin 20 slides back and forth in the first slide groove 31 along the extension track of the first slide groove 31.

[0111] The driving mechanism includes a knob 53 and a connecting member 54 connected to the moving member 51. The knob 53 is rotatably arranged on the handle housing 52, and the connecting member 54 is movably connected in the handle housing 52. The connecting member 54 is provided with a third slide groove 541; a connecting column 531 is provided on the knob 53, and the connecting column 531 is arranged in the third slide groove 541. When the knob 53 is rotated relative to the handle housing 52, the connecting column 531 can slide back and forth in the third slide groove 541, so that the connecting member 54 slides back and forth, and drives the moving member 51 to move back and forth.

[0112] The stapler end actuator 100 provided in the embodiment of the present application has a connecting pin 20 connected to the anvil 10, a first slide groove 31 provided in the stapler cartridge assembly 30, the connecting pin 20 is slidably disposed in the first slide groove 31, and the cutting member 40 is used to cut tissue along a first direction, the first direction intersects with an extension track of the first slide groove 31, and the adjusting component 50 is connected to the connecting pin 20. Therefore, when the thickness of the tissue in the anastomosis area changes significantly, the connecting pin 20 can be driven by the adjusting component 50 to slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31 to change the position of the rotation center of the rotational connection of the anvil 10 relative to the stapler cartridge assembly 30, and then the pitch angle of the anvil 10 relative to the stapler cartridge assembly 30 can be changed to adjust the height of the staples formed between the anvil 10 and the stapler cartridge assembly 30. That is, the stapler end actuator 100 provided in the embodiment of the present application can flexibly adjust the formed staple height of the staples according to the different thicknesses of different parts of the tissue in the anastomosis area during the anastomosis process according to the change in tissue thickness.

[0113] In a second aspect, an embodiment of the present application provides a stapler, which includes the stapler end actuator 100 as described in the first aspect.

[0114] The stapler provided in the embodiment of the present application has a connecting pin 20 connected to the anvil 10, and a first slide groove 31 provided in the stapler assembly 30. The connecting pin 20 is slidably disposed in the first slide groove 31, and the cutting member 40 is used to cut tissue along a first direction, the first direction intersects with an extension track of the first slide groove 31, and the adjusting component 50 is 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 slide back and forth in the first slide groove 31 along the extension track of the first slide groove 31 to change the position of the rotation center of the rotational connection of the anvil 10 relative to the stapler assembly 30, thereby changing the pitch angle of the anvil 10 relative to the stapler assembly 30 to adjust the height of the staples formed between the anvil 10 and the stapler assembly 30. That is, the stapler provided in the embodiment of the present application can flexibly adjust the formed staple height of the staples according to the difference in thickness of different parts of the tissue in the anastomosis area during the anastomosis process according to the change in tissue thickness.

[0115] It should be noted that the stapler also includes a handle portion (not shown in the figure) and an axis assembly (not shown in the figure). The handle portion can control the movement of the cutting member 40 along a first direction and a direction opposite to the first direction through the axis assembly. The handle portion can also control the movement of the staple magazine assembly 30 and the anvil 10, control the opening and closing of the jaws, etc. through the axis assembly.

[0116] It can be understood that the adjustment component 50 can be disposed inside the handle portion.

[0117] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A stapler end actuator, characterized in that: include: an anvil connected with a connecting pin; The nail magazine assembly is provided with a first slide groove, and the connecting pin is slidably arranged in the first slide groove; a cutting member, for cutting tissue along a first direction, wherein the first direction intersects with an extension track of the first slideway; An adjusting component is connected to the connecting pin, and is used to drive the connecting pin to slide back and forth in the first sliding groove along the extension track of the first sliding groove to change the position of the rotation center of the anvil relative to the rotational connection of the nail magazine assembly.

2. The stapler end actuator according to claim 1, characterized in that: The adjusting component comprises: The moving member is provided with a second slide groove, the extension track of the second slide groove is arranged at an angle with the extension track of the first slide groove, and the connecting pin is slidably inserted into the second slide groove; The driving mechanism is used to drive the moving member to move back and forth, so that the connecting pin slides back and forth in the first sliding groove along the extension track of the first sliding groove.

3. The stapler end effector according to claim 2, characterized in that: The driving mechanism is used to drive the moving member to reciprocate along the first direction.

4. The stapler end actuator according to claim 2, characterized in that: The driving mechanism is used to drive the moving member to reciprocate along the extension track of the first sliding slot.

5. The stapler end effector according to claim 2, characterized in that: The stapler end actuator also includes a handle housing; The driving mechanism comprises: The knob is rotatably disposed on the handle housing, and the knob is transmission-connected to the moving member. The moving member can be driven to move back and forth by rotating the knob relative to the handle housing.

6. The stapler end effector according to claim 5, characterized in that: The driving mechanism also includes a connecting piece connected to the moving piece, the connecting piece is movably connected in the handle shell, and the connecting piece is provided with a third slide groove; a connecting column is provided on the knob, and the connecting column is arranged in the third slide groove. When the knob is rotated relative to the handle shell, the connecting column can slide back and forth in the third slide groove, thereby causing the connecting piece to slide back and forth and drive the moving piece to move back and forth.

7. The stapler end effector according to any one of claims 1 to 6, characterized in that: The nail magazine assembly includes a nail magazine base and a nail magazine arranged on the nail magazine base, and the first sliding groove is arranged on the nail magazine base.

8. The stapler end effector according to any one of claims 1 to 6, characterized in that: The cutting member includes a cutting portion and a limiting portion, the cutting portion is used to cut tissue along the first direction, the limiting portion is abutted against a side of the anvil away from the nail magazine assembly, and the adjusting component is used to drive the connecting pin to slide back and forth in the first sliding groove along an extension track of the first sliding groove, so that the anvil rotates with the limiting portion as a fulcrum.

9. The stapler end effector according to claim 8, characterized in that: The limiting portion is provided with an arc surface, and the arc surface abuts against a side of the anvil away from the nail magazine assembly, and at least a portion of the arc surface serves as the fulcrum.

10. A stapler, characterized in that: The stapler comprises the stapler end effector according to any one of claims 1 to 9.

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