Clutch transposition device and anastomat

Abstract

The utility model discloses a clutch transposition device and an anastomat, the near end of the clutch transposition device is connected with a motor platform, the far end of the clutch transposition device is connected with a staple cartridge jaw, when the clutch transposition device is located at a first transmission position, the clutch transposition device can control the staple cartridge jaw to be closed / opened, and when the clutch transposition device is located at a second transmission position, the clutch transposition device can control the staple cartridge jaw to be closed / opened. And when the clutch transposition device is located at the second transmission position, triggering / resetting of the cutting knife can be controlled. According to the clutch transposition device designed by the utility model, the switching of two transmission positions can be realized, so that the two functions of simultaneously controlling the closing of the nail bin and the cutting and suturing of tissues by one driving shaft are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a clutch-transfer device of a surgical instrument electric laparoscopic stapler and the stapler. Background Art

[0002] In recent years, electric laparoscopic staplers have flourished and received good reviews in minimally invasive surgery. Currently, there are many electric laparoscopic staplers with different structures on the market. Among them, the electric laparoscopic staplers with an integrated structure need to realize the transmission switching of the closing stapler and the cutting and suturing tissue functions. Based on the research on the current product structure, the utility model inventor found that the transmission switching of the closing stapler and the cutting and suturing tissue functions of the existing electric laparoscopic staplers with an integrated structure cannot be realized.

[0003] How to solve the technical problem of transmission switching between closing the staple cartridge and cutting and suturing tissue functions in the prior art is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve the technical problem that the closing stapler and the tissue cutting and suturing functions of the electric laparoscopic stapler in the prior art cannot be switched by transmission.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A clutch shifting device, the proximal end of which is connected to a motor platform, and the distal end of which is connected to a nail magazine jaw. When the clutch shifting device is in a first transmission position, it can control the closing / opening of the nail magazine jaw; when the clutch shifting device is in a second transmission position, it can control the firing / resetting of the cutting knife.

[0007] Furthermore, the clutch shifting device includes a locking device 101 and a transmission housing 102. The distal end of the locking device 101 is connected to the proximal end of the transmission housing 102. The transmission housing 102 includes a transmission assembly, a first transmission position assembly, and a second transmission position assembly.

[0008] When the transmission assembly is connected to the first transmission position assembly, the transmission assembly is located in the first transmission position;

[0009] When the transmission assembly is connected to the second transmission position assembly, the transmission assembly is located in the second transmission position.

[0010] Furthermore, the transmission assembly includes a transmission shaft 103, a clutch shaft 104, a clutch plate 105, a clutch shaft locker 114, and a clutch transposition bracket 115;

[0011] The proximal end of the transmission shaft 103 passes through the locking device 101 and is connected to the motor platform;

[0012] The distal end of the transmission shaft 103 is connected to the proximal end of the clutch shaft 104;

[0013] The distal side wall of the clutch shaft 104 is provided with a displacement groove 1043 for accommodating the clutch plate 105 . The height of the clutch plate 105 is greater than the diameter of the clutch shaft 104 .

[0014] The proximal end of the clutch shaft 104 is provided with an annular limit block 1042, and the clutch shaft locker 114 is installed on the annular limit block 1042 of the clutch shaft 104;

[0015] The clutch shaft locker 114 is fixedly connected to the clutch transposition bracket 115 .

[0016] Furthermore, the first transmission position assembly includes a clutch screw rod 107 and a nut sleeve 108;

[0017] The clutch screw 107 is provided with a first triangular transposition structure 1071 inside;

[0018] The outer surface of the clutch screw rod 107 is provided with a thread 1072 , and the nut sleeve 108 is sleeved on the clutch screw rod 107 via the thread 1072 .

[0019] Furthermore, the first transmission position assembly further includes a first end bearing 106 , and the inner wall of the transmission housing 102 is provided with a first limiting plate 1026 and a second limiting plate 1027 ;

[0020] The first end bearing 106 is connected to one end of the clutch screw 107 and is used to bear the axial load of the clutch screw 107 and reduce the end surface friction of the clutch screw 107;

[0021] The first end bearing 106 and the clutch screw 107 are restricted between the first limiting plate 1026 and the second limiting plate 1027 .

[0022] Furthermore, the transmission assembly is pushed so that when the clutch shaft 104 with the clutch plate 105 is inserted into the clutch screw 107, the clutch plate 105 is inserted into the first triangular transposition structure 1071, so that the transmission assembly is located in the first transmission position;

[0023] When the transmission shaft 103 drives the clutch shaft 104 to rotate counterclockwise, the clutch shaft 104 drives the clutch screw 107 to rotate counterclockwise; the rotation of the clutch screw 107 causes the nut sleeve 108 to move axially in the distal direction, closing the nail magazine jaws;

[0024] When the transmission shaft 103 drives the clutch shaft 104 to rotate clockwise, the clutch shaft 104 drives the clutch screw 107 to rotate clockwise; the rotation of the clutch screw 107 causes the nut sleeve 108 to move axially in the proximal direction, so that the nail magazine jaws open.

[0025] Furthermore, a nut sleeve limiting surface 10211 is provided on the inner wall of the transmission housing 102 for limiting the position of the nut sleeve 108 so that the torsional force applied to the nut sleeve 108 is converted into axial motion.

[0026] Furthermore, the second transmission position assembly includes a clutch converter 109 and a drive screw 112;

[0027] The clutch converter 109 is limited in the limiting groove 1028 of the transmission housing 102;

[0028] A second triangular transposition structure 1091 is provided inside the clutch converter 109;

[0029] The limiting platform 1124 of the driving screw 112 is inserted into the limiting groove 1092 of the clutch converter 109 .

[0030] Furthermore, when the transmission assembly is pushed so that the clutch shaft 104 with the clutch plate 105 is inserted into the clutch converter 109, the clutch plate 105 is inserted into the second triangular transposition structure 1091, so that the transmission assembly moves from the first transmission position to the second transmission position;

[0031] When the transmission shaft 103 drives the clutch shaft 104 to rotate counterclockwise, the clutch shaft 104 drives the clutch converter 109 to rotate counterclockwise; the rotation of the clutch converter 109 causes the axial direction of the driving screw 112 to move toward the distal end, causing the cutting knife to fire;

[0032] When the transmission shaft 103 drives the clutch shaft 104 to rotate clockwise, the clutch shaft 104 drives the clutch converter 109 to rotate clockwise; the rotation of the clutch converter 109 causes the drive screw 112 to move axially toward the proximal direction, so that the cutting knife is reset.

[0033] Furthermore, the second transmission position assembly further includes a clamping ring 110, a second end bearing 111, and a fixing sleeve 113;

[0034] The second end face bearing 111 is installed on each side of the annular limit block 1122 of the driving screw rod 112 to reduce the end face friction of the annular limit block 1122 of the driving screw rod 112;

[0035] The clamping ring 110 is mounted on the clamping ring surfaces 10210 on both sides of the transmission housing 102;

[0036] The limiting groove 1131 of the fixing sleeve 113 is installed on the limiting protrusion 1029 of the transmission housing 102 .

[0037] A stapler comprises any one of the above-mentioned clutch-transfer devices.

[0038] After adopting such a design, the utility model has at least the following advantages:

[0039] (1) The clutch shifting device designed in the present invention can realize the switching of two transmission positions, thereby realizing that one drive shaft controls the two functions of closing the staple cartridge and cutting and suturing tissue at the same time.

[0040] (2) The present invention designs a transposition device based on an electric mainframe platform, which can realize the reuse of the electric mainframe platform and improve the adaptability of the electric laparoscopic stapler, so that the electric mainframe platform can be reused, effectively reducing the cost of surgical instruments.

[0041] (3) The design of the utility model modularizes the electric host platform and the clutch shifting device. The electric host platform only needs to provide a transmission shaft to realize the two functions of closing the nail magazine and cutting and suturing tissues at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Figure 1 This is a schematic diagram of a clutch shifting device according to an embodiment of the present invention;

[0044] Figure 2 This is an overall structural diagram of a clutch shifting device according to an embodiment of the present invention;

[0045] Figure 3 This is a structural diagram of a locking device 101 according to an embodiment of the present invention;

[0046] Figure 4 This is a schematic structural diagram of a transmission housing 102 according to an embodiment of the present invention;

[0047] Figure 5 This is a schematic structural diagram of a transmission shaft 103 according to an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of a transmission component of a clutch shifting device according to an embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram of the interior of a clutch shifting device according to an embodiment of the present invention;

[0050] Figure 8 This is a schematic diagram of the interior of a nut sleeve installed in a clutch shifting device according to an embodiment of the present invention;

[0051] Figure 9 This is a schematic diagram of the installation of the clutch shaft 104 and the clutch plate 105 according to an embodiment of the present invention;

[0052] Figure 10 This is a schematic structural diagram of the first end bearing 106 according to an embodiment of the present invention;

[0053] Figure 11 This is a schematic structural diagram of a clutch screw rod 107 according to an embodiment of the present invention;

[0054] Figure 12 This is a structural diagram of a nut sleeve 108 according to an embodiment of the present invention;

[0055] Figure 13 This is a schematic structural diagram of a clutch converter 109 according to an embodiment of the present invention;

[0056] Figure 14 This is a schematic structural diagram of a clamping ring 110 according to an embodiment of the present invention;

[0057] Figure 15 This is a schematic structural diagram of the second end bearing 111 in one embodiment of the present utility model;

[0058] Figure 16 This is a schematic structural diagram of the driving screw rod 112 according to an embodiment of the present invention;

[0059] Figure 17 This is a structural diagram and an anatomical diagram of the inner tube fixing sleeve 113 according to an embodiment of the present invention;

[0060] Figure 18 This is a schematic structural diagram of a clutch shaft locker 114 according to an embodiment of the present invention;

[0061] Figure 19 This is a schematic structural diagram of a clutch transposition bracket 115 according to an embodiment of the present invention;

[0062] Figure 20 This is a schematic diagram of a transmission assembly of a clutch shifting device according to an embodiment of the present invention being located in a first transmission position;

[0063] Figure 21 This is a schematic diagram of a transmission assembly of a clutch shifting device according to an embodiment of the present invention being located in a second transmission position;

[0064] Reference numerals,

[0065] Locking device 101, transmission housing 102, transmission shaft 103, clutch shaft 104, clutch plate 105, first end bearing 106, clutch screw 107, nut sleeve 108, clutch converter 109, clamping ring 110, second end bearing 111, drive screw 112, fixing sleeve 113, clutch shaft locker 114, clutch transposition bracket 115, positioning protrusion 1011, positioning hole 1012, coupling 1015, positioning groove 1021, positioning support 1022, positioning support 1023, positioning hole 1024, driving groove 1025, first limiting plate 1026, second limiting plate 1027, limiting groove 1028, limiting protrusion 1029, clamping ring surface 10210, nut sleeve limiting Surface 10211, limiting groove 10212, limiting platform 1031, annular limiting block 1032, limiting platform 1033, limiting groove 1041, annular limiting block 1042, displacement groove 1043, first triangular displacement structure 1071, thread 1072, thread 1081, limiting surface 1082, front limiting groove 1083, second triangular displacement structure 1091, limiting groove 1092, chamfer 1101, screw shaft 1121, annular limiting block 1122, pin 1123, limiting platform 1124, thread 1125, limiting groove 1131, inner cavity 1132, limiting groove 1141, positioning pillar 1142, limiting groove 1151, positioning pillar 1152, positioning hole 1153; DETAILED DESCRIPTION

[0066] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0067] In this document, “upper”, “lower”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0068] The end of each component closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. The expressions proximal end and distal end are used only to simplify and clarify the description and should not be construed as any limitation on the utility model.

[0069] like Figure 1-21As shown, one embodiment of the present invention provides a clutch shifting device, the proximal end of which is connected to the motor platform, and the distal end of which is connected to the nail magazine jaws. When the clutch shifting device is in the first transmission position, it can control the closing / opening of the nail magazine jaws, and when the clutch shifting device is in the second transmission position, it can control the firing / resetting action of the cutting knife.

[0070] Furthermore, the clutch shifting device includes a locking device 101 and a transmission housing 102. The distal end of the locking device 101 is connected to the proximal end of the transmission housing 102. A positioning protrusion 1011 is provided at the distal end of the locking device 101 for inserting into the positioning groove 1021 at the proximal end of the transmission housing 102; a positioning pillar 1022 is provided on the proximal side wall of the transmission housing 102 for inserting into the positioning hole 1012 of the locking device 101; thereby, the locking device 101 and the transmission housing 102 are completely limited and fixedly connected.

[0071] Here, the transmission housing 102 includes a transmission assembly, a first transmission position assembly, and a second transmission position assembly;

[0072] When the transmission assembly is connected to the first transmission position assembly, the transmission assembly is located in the first transmission position;

[0073] When the transmission assembly is connected to the second transmission position assembly, the transmission assembly is located in the second transmission position.

[0074] Specifically, the transmission assembly includes a transmission shaft 103, a clutch shaft 104, a clutch plate 105, a clutch shaft locker 114, and a clutch transposition bracket 115;

[0075] The proximal end of the transmission shaft 103 passes through the locking device 101 and is connected to the motor platform;

[0076] Specifically, the limiting platform 1031 at the proximal end of the transmission shaft 103 is inserted into the coupling 1015 of the locking device 101, and the proximal end of the coupling 1015 is connected to the output shaft of the motor platform;

[0077] The transmission shaft 103 is further provided with an annular stopper 1032 , which is inserted into the stopper groove 10212 on the side wall of the transmission housing 102 . The distal end of the transmission shaft 103 is connected to the proximal end of the clutch shaft 104 .

[0078] A displacement groove 1043 is provided on the distal side wall of the clutch shaft 104 for accommodating the clutch plate 105 . The height of the clutch plate 105 is greater than the diameter of the clutch shaft 104 .

[0079] The proximal end of the clutch shaft 104 is provided with an annular stop block 1042 , and the clutch shaft locker 114 is mounted on the annular stop block 1042 of the clutch shaft 104 ;

[0080] The clutch shaft locker 114 is fixedly connected to the clutch transposition bracket 115 .

[0081] The clutch shaft locker 114 includes a limiting groove 1141 and a positioning pillar 1142;

[0082] The limiting groove 1141 is installed on the annular limiting block 1042 of the clutch shaft 104;

[0083] The clutch shift bracket 115 includes a limiting groove 1151, a positioning pillar 1152, a positioning hole 1153 and a positioning pillar 1154;

[0084] The positioning pillar 1142 on the clutch shaft locker 114 passes through the travel groove 1025 of the transmission housing 102, and the limit groove 1151 of the clutch transposition bracket 115 is installed on the positioning pillar 1142 on the clutch shaft locker 114. The clutch transposition bracket 115 includes two symmetrical parts and is fixedly installed by the positioning pillar 1152 and the positioning hole 1153.

[0085] The first transmission position assembly of one embodiment of the present invention includes a clutch screw 107 and a nut sleeve 108; a first triangular displacement structure 1071 is provided inside the clutch screw 107; a thread 1072 is provided on the outer surface of the clutch screw 107, and the nut sleeve 108 is sleeved on the clutch screw 107 through the thread 1072.

[0086] The clutch plate 105 is first inserted into the displacement groove 1043 of the clutch shaft 104. When the clutch shaft 104 with the clutch plate 105 is inserted into the clutch screw 107, the clutch plate 105 is inserted into the first triangular displacement structure 1071.

[0087] The end surface of the first triangular transposition structure 1071 is a slope surface;

[0088] The end surface of the clutch plate 105 is a sloped surface;

[0089] Here, the slope design of the first triangular transposition structure 1071 and the clutch plate 105 facilitates the smooth dislocation of the two during installation. Of course, other structural designs can also be used as long as they can ensure that the first triangular transposition structure 1071 and the clutch plate 105 are fixedly installed and locked.

[0090] When the clutch shaft 104 with the clutch plate 105 is inserted into the triangular displacement structure 1071 inside the clutch screw 107 at any angle, one side of the clutch plate 105 will contact the triangular displacement structure 1071 inside the clutch screw 107, thereby forcing the clutch plate 105 to move in the opposite direction in the displacement groove 1043 of the clutch shaft 104. At this time, the clutch plate 104 will move to the gap of the triangular displacement structure 1071 inside the clutch screw 107, completing the locking connection between the clutch shaft 104 and the clutch screw 107. This position is the first transmission position.

[0091] The first transmission position assembly further includes a first end bearing 106 , and the inner wall of the transmission housing 102 is provided with a first limit plate 1026 and a second limit plate 1027 ;

[0092] The first end bearing 106 is connected to one end of the clutch screw 107 and is used to bear the axial load of the clutch screw 107;

[0093] The first end bearing 106 and the clutch screw 107 are restrained between the first and second limit plates 1026 and 1027. Therefore, the clutch screw 107 transmits the input torque to the nut sleeve 108 through threaded engagement. Because the nut sleeve 108 is restrained by the nut sleeve limit surface 10211 of the transmission housing 102, the torque applied to the nut sleeve 108 is converted into axial motion. When the nut sleeve 108 is forced to move forward, the clutch screw 107 is subjected to a reaction force, resulting in an axial load with a tendency to move backward. The first end bearing 106 effectively bears the axial load of the clutch screw 107, reducing end face friction.

[0094] The front end limiting groove 1083 of the nut sleeve 108 extends out of the transmission housing 102, and the limiting surface 1082 cooperates with the first limiting plate 1026 and the second limiting plate 1027 to limit the rotational freedom of the nut sleeve 108, so that the nut sleeve 108 moves axially. When the nut sleeve 108 is driven forward inside the transmission housing 102, it will reach the limiting plate 1027 of the transmission housing 102.

[0095] In the initial state, the clutch shaft 104 with the clutch plate 105 is inserted into the clutch screw 107, and the clutch plate 105 is inserted into the first triangular transposition structure 1071, so that the transmission assembly is in the first transmission position;

[0096] When the transmission shaft 103 drives the clutch shaft 104 to rotate counterclockwise, the clutch shaft 104 drives the clutch screw 107 to rotate counterclockwise; the rotation of the clutch screw 107 causes the nut sleeve 108 to move axially in the distal direction, closing the nail magazine jaws;

[0097] When the transmission shaft 103 drives the clutch shaft 104 to rotate clockwise, the clutch shaft 104 drives the clutch screw 107 to rotate clockwise; the rotation of the clutch screw 107 causes the nut sleeve 108 to move axially toward the proximal direction, so that the nail magazine jaws open.

[0098] The inner wall of the transmission housing 102 is provided with a nut sleeve limiting surface 10211, which is used to limit the position of the nut sleeve 108 so that the torque exerted on the nut sleeve 108 is converted into axial movement. When the nut sleeve 108 moves to the second limiting plate 1027 of the transmission housing 102, the nail magazine jaws are closed.

[0099] The nut sleeve 108 is screwed into the thread 1072 of the clutch screw rod 107 through the thread 1081 , and the limiting platform 1033 of the transmission shaft 103 is inserted into the limiting groove 1041 of the clutch shaft 104 .

[0100] The second transmission position assembly includes a clutch converter 109 and a drive screw 112;

[0101] The proximal end of the clutch converter 109 is connected to the distal end of the clutch screw 107 , and the distal end of the clutch converter 109 is connected to the driving screw 112 ;

[0102] The clutch converter 109 is limited in the limiting groove 1028 of the transmission housing 102;

[0103] A second triangular transposition structure 1091 is provided inside the clutch converter 109;

[0104] The end surface of the second triangular transposition structure 1091 is a slope surface;

[0105] Here, the slope design of the second triangular transposition structure 1091 and the clutch plate 105 facilitates the smooth dislocation of the two during installation. Of course, other structural designs can also be used as long as they can ensure that the second triangular transposition structure 1091 and the clutch plate 105 are fixedly installed and locked.

[0106] The driving screw rod 112 includes three parts: a screw rod 1121 , an annular limiting block 1122 and a pin shaft 1123 . The proximal end of the driving screw rod 112 has a limiting platform 1124 , and the distal end of the driving screw rod 112 is threaded 1125 .

[0107] The limiting platform 1124 of the driving screw 112 is inserted into the limiting groove 1092 of the clutch converter 109 .

[0108] Push the transmission assembly so that the clutch shaft 104 with the clutch plate 105 is inserted into the clutch converter 109, and the clutch plate 105 is inserted into the second triangular transposition structure 1091, so that the transmission assembly is located in the second transmission position;

[0109] When the transmission shaft 103 drives the clutch shaft 104 to rotate counterclockwise, the clutch shaft 104 drives the clutch converter 109 to rotate counterclockwise; the rotation of the clutch converter 109 causes the axial direction of the driving screw 112 to move toward the distal direction, causing the cutting knife to fire;

[0110] When the transmission shaft 103 drives the clutch shaft 104 to rotate clockwise, the clutch shaft 104 drives the clutch converter 109 to rotate clockwise; the rotation of the clutch converter 109 causes the drive screw 112 to move axially toward the proximal direction, so that the cutting knife is reset.

[0111] Here, the clutch converter 109 and the drive screw 112 are transmitted, the transmission shaft 103 drives the clutch shaft 104, and then the drive screw 112 is rotated through the triangular transposition structure 1091 of the clutch converter 109. Since the screw is forced to perform radial rotational motion, the front end of the drive screw 112 needs to cooperate with the transmission device for cutting and suturing tissue. The drive screw 112 will be subjected to the reaction force of the transmission device, and there will be an axial load with a tendency to move forward or backward.

[0112] The second transmission position assembly also includes a clamping ring 110, a second end bearing 111, and a fixing sleeve 113;

[0113] The annular limiting blocks 1122 of the driving screw 112 are each installed with a second end face bearing 111 ; they are inserted into the inner cavity 1132 of the fixing sleeve 113 , and the limiting groove 1131 of the fixing sleeve 113 is installed on the limiting protrusion 1029 of the transmission housing 102 .

[0114] The transmission housing 102 in one embodiment of the present invention is divided into two symmetrical parts, the upper and lower parts being fixed together by a plurality of positioning pillars 1023 and positioning holes 1024 to form a cavity of the transmission housing 102 .

[0115] The second end face bearing 111 effectively bears the axial load of the driving screw 112 and reduces the end face friction.

[0116] The clamping ring 110 is mounted on the clamping ring surfaces 10210 on both sides of the transmission housing 102 .

[0117] Here, there are two clamping rings 110 .

[0118] To facilitate installation, the inner surface of the clamping ring 110 is designed with a chamfer 1101 .

[0119] In the embodiment of the utility model, the transmission component is switched between the clutch screw 107 and the clutch converter 109. When the transmission component is working in the clutch screw 107, that is, the first transmission position, it is used to realize the closing / opening of the nail magazine jaws. When the transmission component is working in the clutch converter 109, that is, the second transmission position, it is used to realize the firing / resetting action of the cutting knife.

[0120] An embodiment of the present invention further provides a stapler comprising the clutch and transposition device of any of the above solutions.

[0121] After adopting such a design, the utility model has at least the following advantages:

[0122] (1) The clutch shifting device designed in the present invention can realize the switching of two transmission positions by adjusting the transmission component, thereby realizing that one drive shaft can simultaneously control the two functions of closing the staple cartridge and cutting and suturing tissue.

[0123] (2) The present invention designs a transposition device based on an electric mainframe platform, which can realize the reuse of the electric mainframe platform and improve the adaptability of the electric laparoscopic stapler, so that the electric mainframe platform can be reused, effectively reducing the cost of surgical instruments.

[0124] (3) The design of the utility model modularizes the electric host platform and the clutch shifting device. The electric host platform only needs to provide a transmission shaft to realize the two functions of closing the nail magazine and cutting and suturing tissues at the same time.

[0125] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the utility model disclosed in the specification and examples. This application is intended to cover any variations, uses, or adaptations of the present invention that adhere to the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered merely as exemplary; the true scope and spirit of the present invention are indicated by the following claims.

[0126] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A clutch shifting device, characterized in that: The proximal end of the clutch shifting device is connected to the motor platform, and the distal end of the clutch shifting device is connected to the nail magazine jaw. When the clutch shifting device is in the first transmission position, it can control the closing / opening of the nail magazine jaw. When the clutch shifting device is in the second transmission position, it can control the firing / resetting of the cutting knife.

2. The clutch shifting device according to claim 1, characterized in that: The clutch shifting device comprises a locking device (101) and a transmission housing (102), wherein the distal end of the locking device (101) is connected to the proximal end of the transmission housing (102), and the transmission housing (102) internally comprises a transmission assembly, a first transmission position assembly, and a second transmission position assembly. When the transmission assembly is connected to the first transmission position assembly, the transmission assembly is located in the first transmission position; When the transmission assembly is connected to the second transmission position assembly, the transmission assembly is located in the second transmission position.

3. The clutch shifting device according to claim 2, characterized in that: The transmission assembly includes a transmission shaft (103), a clutch shaft (104), a clutch plate (105), a clutch shaft locker (114), and a clutch transposition bracket (115); The proximal end of the transmission shaft (103) passes through the locking device (101) and is connected to the motor platform; The distal end of the transmission shaft (103) is connected to the proximal end of the clutch shaft (104); The distal side wall of the clutch shaft (104) is provided with a displacement groove (1043) for accommodating the clutch plate (105), and the height of the clutch plate (105) is greater than the diameter of the clutch shaft (104); The proximal end of the clutch shaft (104) is provided with an annular limiting block (1042), and the clutch shaft locker (114) is mounted on the annular limiting block (1042) of the clutch shaft (104); The clutch shaft locker (114) is fixedly connected to the clutch transposition bracket (115).

4. The clutch shifting device according to claim 3, characterized in that: The first transmission position assembly includes a clutch screw (107) and a nut sleeve (108); A first triangular transposition structure (1071) is provided inside the clutch screw rod (107); The outer surface of the clutch screw rod (107) is provided with a thread (1072), and the nut sleeve (108) is sleeved on the clutch screw rod (107) through the thread (1072).

5. The clutch shifting device according to claim 4, characterized in that: The first transmission position assembly further includes a first end face bearing (106), and the inner wall of the transmission housing (102) is provided with a first limiting plate (1026) and a second limiting plate (1027); The first end face bearing (106) is connected to one end of the clutch screw (107) and is used to bear the axial load of the clutch screw (107) and reduce the end face friction of the clutch screw (107); The first end face bearing (106) and the clutch screw (107) are restricted between the first limiting plate (1026) and the second limiting plate (1027).

6. The clutch shifting device according to claim 5, characterized in that: Pushing the transmission assembly so that the clutch shaft (104) with the clutch plate (105) is inserted into the clutch screw (107), the clutch plate (105) is inserted into the first triangular transposition structure (1071), so that the transmission assembly is located in the first transmission position; When the transmission shaft (103) drives the clutch shaft (104) to rotate counterclockwise, the clutch shaft (104) drives the clutch screw (107) to rotate counterclockwise; the rotation of the clutch screw (107) causes the nut sleeve (108) to move axially in the distal direction, so that the nail magazine jaws are closed; When the transmission shaft (103) drives the clutch shaft (104) to rotate clockwise, the clutch shaft (104) drives the clutch screw (107) to rotate clockwise; the rotation of the clutch screw (107) causes the nut sleeve (108) to move axially in the proximal direction, causing the nail magazine jaws to open.

7. The clutch shifting device according to claim 6, characterized in that: The inner wall of the transmission housing (102) is provided with a nut sleeve limiting surface (10211) for limiting the position of the nut sleeve (108) so that the torsional force applied to the nut sleeve (108) is converted into axial movement.

8. The clutch shifting device according to claim 7, characterized in that: The second transmission position assembly includes a clutch converter (109) and a drive screw (112); The clutch converter (109) is limited in the limiting groove (1028) of the transmission housing (102); A second triangular transposition structure (1091) is provided inside the clutch converter (109); The limiting platform (1124) of the driving screw (112) is inserted into the limiting groove (1092) of the clutch converter (109).

9. The clutch shifting device according to claim 8, characterized in that: Pushing the transmission assembly so that the clutch shaft (104) with the clutch plate (105) is inserted into the clutch converter (109), the clutch plate (105) is inserted into the second triangular transposition structure (1091), so that the transmission assembly moves from the first transmission position to the second transmission position; When the transmission shaft (103) drives the clutch shaft (104) to rotate counterclockwise, the clutch shaft (104) drives the clutch converter (109) to rotate counterclockwise; the rotation of the clutch converter (109) causes the drive screw (112) to move axially in a distal direction, causing the cutting knife to fire; When the transmission shaft (103) drives the clutch shaft (104) to rotate clockwise, the clutch shaft (104) drives the clutch converter (109) to rotate clockwise; the rotation of the clutch converter (109) causes the driving screw rod (112) to move axially in the proximal direction, thereby resetting the cutting knife.

10. The clutch shifting device according to claim 9, characterized in that: The second transmission position assembly further includes a clamping ring (110), a second end face bearing (111), and a fixing sleeve (113); A second end face bearing (111) is installed on each side of the annular limit block (1122) of the driving screw rod (112) to reduce the end face friction of the annular limit block (1122) of the driving screw rod (112); The clamping ring (110) is mounted on the clamping ring surfaces (10210) on both sides of the transmission housing (102); The limiting groove (1131) of the fixing sleeve (113) is mounted on the limiting protrusion (1029) of the transmission housing (102).

11. A stapler, characterized in that: It comprises the clutch shifting device as described in any one of claims 1-10.

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