Disclosure of Invention
The invention aims to provide a knob device which can improve the rotation precision and the operation hand feeling of an operator.
In order to achieve the above object, the present invention provides a knob device comprising:
the shell is provided with a containing cavity and an assembly hole which are communicated with each other;
the knob body is assembled in the assembly hole and can rotate relative to the shell;
The transmission piece is assembled in the accommodating cavity and provided with a rotating shaft which protrudes into the assembly hole and is fixedly connected with the knob body;
The driven piece is positioned between the transmission piece and the knob body, the driven piece is provided with a perforation for the rotating shaft to pass through, and a penetrating groove which is annularly arranged at the periphery of the driven piece, the penetrating groove and the penetrating groove are mutually perpendicular to each other in the opening direction, and
The gear plate is annularly arranged on the periphery of the driven piece and is fixedly connected with the shell;
The knob device comprises a knob body, a gear plate, a knob device and a positioning piece, wherein the positioning piece is fixed in a penetrating groove of the driven piece, the positioning piece is partially exposed out of the driven piece, positioning grooves for accommodating the positioning piece are correspondingly formed in the gear plate, at least two positioning grooves are formed in the gear plate, and when the knob body is rotated to enable the positioning piece to be positioned in one of the positioning grooves, the knob device is positioned in a first gear; when the knob body is rotated to enable the positioning piece to be positioned in the other positioning groove, the knob device is positioned in the second gear.
As a further improvement of the invention, the periphery of the gear plate is provided with the clamping teeth, the shell is internally provided with the corresponding clamping grooves, and the clamping teeth are accommodated in the clamping grooves so that the gear plate is fixedly connected with the shell.
As a further improvement of the invention, one end of the positioning piece exposed outside the driven piece is provided with an elastic bead, and the elastic bead is accommodated in the positioning groove and can be elastically deformed in the process of rotating the knob body.
The invention also provides an anastomat, which can improve the rotation precision of an anastomotic assembly and the operation hand feeling of an operator.
To achieve the above object, the present invention provides a stapler including the aforementioned knob device, the stapler further including:
A barrel assembly having a first end and a second end;
the anastomotic assembly is positioned at the first end of the gun barrel assembly and is rotationally connected with the gun barrel assembly;
A trigger assembly coupled to a second end of the barrel assembly;
the knob device is also positioned at the second end of the gun barrel assembly and is fixedly connected with the trigger assembly so as to control the anastomosis assembly to rotate relative to the gun barrel assembly.
As a further improvement of the invention, the shell is provided with a through hole, the second end of the gun barrel component passes through the through hole and then is connected with the trigger component, one side of the transmission component, which is far away from the driven component, is provided with a limit post, and when the knob device rotates to the state that the limit post is abutted against the gun barrel component, the rotation angle of the anastomosis component reaches the maximum.
As a further improvement of the invention, the knob device also comprises a movable block which is accommodated in the accommodating cavity and is movably connected with the gun barrel assembly, the transmission piece is connected with the movable block, and the movable block is configured to be horizontally moved along the gun barrel assembly under the drive of the transmission piece.
As a further improvement of the invention, a retaining groove is arranged on one side of the movable block, which faces the transmission piece, and the limit post is accommodated in the retaining groove so as to slide in the retaining groove in the process of driving the movable block to move.
As a further improvement of the invention, the gun barrel assembly comprises a sleeve, a clamping part is arranged at the second end of the sleeve, and the sleeve is in transmission connection with the trigger assembly and can move towards the anastomosis assembly under the drive of the trigger assembly until the clamping part is clamped with the knob device.
As a further improvement of the invention, the transmission piece is provided with tooth grooves corresponding to the positioning grooves, and when the positioning piece is accommodated in the positioning grooves, the clamping part can be meshed with the corresponding tooth grooves under the drive of the trigger assembly.
As a further improvement of the present invention, the stapler further comprises a stop device comprising a first stop device connected to the trigger assembly and a second stop device fixed inside the stapler, the first stop device being configured to be in driving connection with the trigger assembly so as to be displaced to be in clamping engagement with the second stop device upon actuation of the trigger assembly.
The knob device has the beneficial effects that the knob body assembled in the assembly hole, the transmission part and the driven part accommodated in the accommodation cavity are kept relatively static by arranging the accommodation cavity and the assembly hole which are mutually communicated on the shell, and then the positioning part is driven to rotate when the knob body is rotated by arranging the gear plate fixedly connected with the shell on the periphery of the driven part, so that the positioning part moves from one positioning groove of the gear plate to the other positioning groove, and the gear switching is completed. Compared with the prior art, the invention not only ensures the rotating precision, but also improves the operation hand feeling of operators.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 5, the present invention discloses an anastomat 100 for abdominal surgery, comprising an anastomosis assembly 1, a barrel assembly 2, a trigger assembly 3 and a knob device 4. The barrel assembly 2 has a first end 21 and a second end 22, and the anastomosis assembly 1 is located at the first end 21 of the barrel assembly 2 and is rotatable relative to the barrel assembly 2.
In this embodiment, the anastomosis assembly 1 is capable of swinging left and right relative to the barrel assembly 2, but in other embodiments is not limited to swinging left and right relative to the barrel assembly 2. Preferably, the knob device 4 is turned to drive the anastomotic assembly 1 to swing, and then the trigger assembly 3 is triggered to lock the knob device 4, so as to limit the rotation of the knob device 4, and then the swinging angle of the anastomotic assembly 1 is locked.
Specifically, referring to fig. 2, the anastomotic assembly 1 has a pin 11 connected to the first end 21, and the anastomotic assembly 1 is rotatably connected to the barrel assembly 2 through the pin 11. In other embodiments, the swinging direction of the anastomosis assembly 1 can be controlled by setting the position of the pin 11, which is not limited.
In this embodiment, the first end 21 of the barrel assembly 2 is internally provided with a rotation assembly 5 in transmission connection with the knob device 4, the anastomotic assembly 1 is fixedly connected with the rotation assembly 5 through the pin 11, and when the knob device 4 is rotated, the rotation assembly 5 rotates along with the rotation assembly, and drives the anastomotic assembly 1 to swing left and right relative to the barrel assembly 2. That is, the pin 11 acts as a connection between the stapling assembly 1 and the rotating assembly 5, so that the stapling assembly 1 can remain relatively stationary with the rotating assembly 5 and oscillate following the rotation of the rotating assembly 5.
The rotary assembly 5 comprises a wheel disc 51, the wheel disc 51 is in transmission connection with the knob device 4 through a transmission rod 52, one side of the wheel disc 51 is provided with a plurality of shark teeth 511, a clamping piece 53 which is opposite to the shark teeth 511 is arranged in the first end 21 of the gun barrel assembly 2, and the clamping piece 53 is meshed with the shark teeth 511. The transmission rod 52 is used for providing transmission connection, so that the rotation device 4 can rotate the rotation assembly 5 to rotate synchronously, and the structure is a conventional structure and will not be described in detail.
Preferably, the holding member 53 includes a holding block 531 and an elastic member 532 sleeved outside the holding block 531, the elastic member 532 has a free state and a deformed state, when the elastic member 532 is in the free state, the holding block 531 is engaged with the shark teeth 511, and when the elastic member 532 is in the deformed state, the holding block 531 is separated from the shark teeth 511.
That is, a movable space is provided in the first end 21 of the barrel assembly 2 for sliding the clamping member 53, and the clamping member 53 may slide within a certain range to be clamped with or separated from the shark teeth 511.
Specifically, the clamping block 531 is clamped into the shark teeth 511 under the action of the elastic force of the elastic member 532, so that the anastomotic assembly 1 and the barrel assembly 2 are kept relatively stationary all the time, but due to the existence of the elastic member 532, when the knob device 4 is turned, the knob device 5 can be driven to turn, and then the elastic member 532 is compressed, so that the clamping block 531 is disengaged from the clamping connection with the shark teeth 511, and the anastomotic assembly 1 can swing left and right relative to the barrel assembly 2. In other words, the rotating assembly 5 has a self-locking device with a weaker locking level, which is able to lock the stapling assembly 1 in use, and which is able to not affect the oscillation of the stapling assembly 1 when it is desired to adjust the position of the stapling assembly 1.
As shown in fig. 7, the first end 21 of the barrel assembly 2 is further sleeved with a closing collar 6, and the closing collar 6 can move from the first end 21 of the barrel assembly 2 toward the anastomotic assembly 1, and the anastomotic assembly 1 is closed for the closing collar 6 to pass through. That is, closure of the anastomosis assembly 1 is achieved by the closure collar 6.
Referring to fig. 3, the knob device 4 includes a housing 42, a knob body 41, a transmission member 43, a follower 44, and a gear plate 45. The casing 42 is provided with a containing cavity 421 and an assembling hole 422 which are mutually communicated, the knob body 41 is assembled in the assembling hole 422 and can rotate relative to the casing 42, the driving part 43, the driven part 44 and the gear plate 45 are assembled in the containing cavity 421, and the gun barrel assembly 2 passes through the containing cavity 421 and is partially contained in the containing cavity 421.
The driving member 43 has a rotation shaft 431 protruding into the assembly hole 422 and fixedly connected with the knob body 41, the driven member 44 is located between the driving member 43 and the knob body 41, and is provided with a through hole 440 for the rotation shaft 431 to pass through, and a through slot 442 annularly arranged on the periphery of the driven member 44, the opening directions of the through slot 442 and the through hole 440 are mutually perpendicular, and the driving member 43 and the driven member 44 are relatively stationary. That is, the rotation of the knob body 41 can drive the driving member 43 and the driven member 44 to rotate synchronously.
The gear plate 45 is disposed around the outer periphery of the follower 44 and is fixedly connected to the housing 42. The gear plate 45 is provided with a plurality of gears, so that the rotation range of the knob body 41 relative to the gear plate 45 is determined by the gears. Preferably, a plurality of latches 452 are provided on the outer periphery of the gear plate 45, corresponding slots 423 are provided in the housing 42, and the latches 452 are accommodated in the slots 423, so that the gear plate 45 is fixedly connected with the housing 42.
Specifically, the through groove 442 of the follower 44 is internally fixed with a positioning member 441, the positioning member 441 is partially exposed to the outside of the follower 44, the gear plate 45 is correspondingly provided with at least two positioning grooves 451 for accommodating the positioning member 441, when the knob body 41 is rotated to enable the positioning member 441 to be positioned in one of the positioning grooves 451, the knob device 4 is in a first gear, and when the knob body 41 is rotated to enable the positioning member 441 to be positioned in the other positioning groove 451, the knob device 4 is in a second gear.
That is, the positioning groove 451 is the gear of the knob device 4, and when in use, the switching of units can be confirmed by different handfeel of the positioning groove 451 when the positioning groove 451 is accommodated in the positioning groove 451 and separated from the positioning groove 451, which clearly provides a high-quality use experience.
Preferably, an end of the positioning member 441 exposed to the follower 44 is provided with an elastic bead 4411, and the elastic bead 4411 is accommodated in the positioning groove 451 and can be elastically deformed during the rotation of the knob body 41. By providing the elastic beads 4411, it is possible to ensure that the positioning piece 441 can be smoothly switched among different positioning grooves 451, and also to avoid the occurrence of damage to the positioning groove 451 or the positioning piece 441 due to violent rotation.
The housing 42 is further provided with a through hole 424 communicated with the accommodating cavity 421, the through hole 424 is used for the barrel assembly 2 to pass through, the second end 22 of the barrel assembly 2 passes through the through hole 424 and then is connected with the trigger assembly 3, the transmission piece 43 is positioned on the upper portion of the barrel assembly 2, and a limit post 432 is arranged on one side of the transmission piece, which is away from the driven piece 44, and when the knob device 4 rotates to the position where the limit post 432 is abutted against the barrel assembly 2, the rotation angle of the anastomosis assembly 1 reaches the maximum, namely the swing amplitude reaches the maximum. In other words, the gear of the knob device 4 and the maximum swing amplitude of the anastomosis assembly 1 can be adjusted by setting the distance between the limit post 432 and the barrel assembly 2.
In this embodiment, the knob device 4 further includes a movable block 47 that is accommodated in the accommodating cavity 421 and is movably connected with the barrel assembly 2, a retaining groove 471 is disposed on a side of the movable block 47 facing the limiting post 432, the limiting post 432 is accommodated in the retaining groove 471 and can drive the movable block 47 to move relative to the barrel assembly 2 by rotating the knob device 4, that is, the linear motion of the movable block 47 is driven by the circumferential rotation of the limiting post 432, and the retaining groove 471 is a track of the limiting post 432 that gradually changes according to the rotation.
In contrast, as shown in fig. 4, the barrel assembly 2 includes a sleeve 23, a second end of the sleeve 23 is provided with a clamping portion 231, and the sleeve 23 is in driving connection with the trigger assembly 3 and can move toward the anastomosis assembly 1 under the driving of the trigger assembly 3 until the clamping portion 231 is clamped with the knob device 4. Of course, the closing collar 6 abuts the sleeve 23 and can be pushed by the sleeve 23 to close the anastomosis assembly 1.
The side of the transmission member 43 facing the clamping portion 231 is provided with a plurality of tooth grooves 433, the tooth grooves 433 correspond to the positioning grooves 451, and when the positioning member 441 is accommodated in the positioning grooves 451, the clamping portion 231 can be meshed with the corresponding tooth grooves 433 under the driving of the trigger assembly 3. That is, the tooth grooves 433 and the positioning grooves 451 can represent the gear of the knob device 4 and correspond to each other.
The trigger assembly 3 comprises a trigger 31 and a transmission assembly 32 for connecting the trigger 31 and the sleeve 23, wherein the transmission assembly 32 is formed by connecting a plurality of parts and can displace along with the buckling of the trigger 31. One end of the transmission component 32 is connected with the trigger 31, and the other end is clamped with the sleeve 23 and can drive the sleeve 23 to move. Therefore, in this embodiment, when the trigger 31 is buckled, the transmission assembly 32 is driven to displace, and then the sleeve 23 is pushed to move toward the anastomotic assembly 1, so as to clamp the clamping portion 231 above the sleeve 23 in the tooth slot 433 of the transmission member 43.
Referring to fig. 6, the anastomat 100 further includes a limiting device 7 for limiting the trigger assembly 3, the limiting device 7 includes a first limiting device 71 connected to the trigger assembly 3, and a second limiting device 72 fixed inside the anastomat 100, the first limiting device 71 moves along with the pulling of the trigger 31, so as to be engaged with the second limiting device 72, so that the trigger assembly 3 is limited in the engaged position, that is, the engaging portion 231 above the sleeve 23 is engaged in the tooth slot of the transmission member 43, so as to limit the rotation of the knob device 4.
Preferably, the anastomat 100 further comprises an unlocking device 8, wherein the unlocking device 8 is opposite to the second limiting device 72, and the unlocking device 8 can be pressed to disengage the second limiting device 72 and the first limiting device 71 from the clamping connection, that is, the clamping connection part 231 above the sleeve 23 is disengaged from the tooth socket 433 of the transmission piece 43, so that the knob device 4 can normally rotate.
The stapler 100 thus has two sets of locking means, namely locking means activated by the trigger assembly 3, and self-locking means self-activated in the cycle assembly 5.
In summary, in the knob device 4 and the stapler 100 of the present invention, the housing 42 is provided with the receiving cavity 421 and the assembly hole 422 which are mutually communicated, so that the knob body 41 assembled in the assembly hole 422 and the driving member 43 and the driven member 44 received in the receiving cavity 421 are kept relatively stationary, and the gear plate 45 fixedly connected with the housing 42 is further provided between the driving member 43 and the driven member 44, so that the positioning member 441 is driven to rotate when the knob body 41 is rotated, and then the positioning member 441 is moved from one of the positioning grooves 451 of the gear plate 45 to the other positioning groove 451, thereby completing the gear switching. In this way, not only the precision of rotation is ensured, but also the operation hand feeling of an operator is improved.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.