CN109498090B - Electric endoscope anastomat resetting device and electric endoscope anastomat - Google Patents
Electric endoscope anastomat resetting device and electric endoscope anastomat Download PDFInfo
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- CN109498090B CN109498090B CN201811631237.4A CN201811631237A CN109498090B CN 109498090 B CN109498090 B CN 109498090B CN 201811631237 A CN201811631237 A CN 201811631237A CN 109498090 B CN109498090 B CN 109498090B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 230000003872 anastomosis Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 6
- 210000001015 abdomen Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 210000000038 chest Anatomy 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 210000003815 abdominal wall Anatomy 0.000 description 2
- 238000002674 endoscopic surgery Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 210000000779 thoracic wall Anatomy 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
Abstract
The invention provides a resetting device of an electric endoscope anastomat, which comprises a resetting part, a transmission rack, a driven gear and a bracket; the reset part is rotatably connected to the bracket; the resetting part comprises a meshing part and a special-shaped clutch plate; the meshing part is coaxially connected with the special-shaped clutch plate, and the special-shaped clutch plate pushes the driven gear to leave the transmission rack after the meshing part is rotated; the meshing part is meshed with the transmission rack; the transmission rack is supported in the bracket in a reciprocating manner; the transmission rack comprises an anastomosis section, a closing section and a resetting section; the anastomotic segment is meshed with the driven gear; the closing section and the resetting section are on the same plane, and the meshing part is respectively meshed with the closing section and the resetting section; when the meshing part is meshed with the reset section, the meshing part pushes the transmission rack to move towards the proximal end; the closing section is arranged at the far end of the resetting section, and the length of the closing section is not less than the closing stroke of the electric endoscopic stapler; the driven gear is meshed with the transmission rack under the support of the elastic component.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an electric endoscopic anastomat resetting device and an electric endoscopic anastomat.
Background
Endoscopic surgery uses modern imaging techniques and high-tech surgical equipment to accomplish minimally invasive surgical techniques for complex procedures within the chest/abdomen under a chest/abdominal wall cannula or mini-incision. When the endoscopic surgery is completed, only 1-3 small holes of 1.5 cm are needed to be made on the chest/abdomen wall, and a doctor inserts the endoscopic anastomat into a sleeve and performs excision and anastomosis operations on focuses such as lung cancer by matching with surgical equipment such as vascular clamps and the like.
At present, there are two main types of endoscopic anastomat: a manual endoscopic stapler is characterized in that a manual operation is used for controlling a percussion nail bin assembly to stitch tissues, a percussion handle is required to be manually held for a plurality of times in use, so that a mechanical transmission mechanism of the stapler pushes the nail bin assembly to be closed for molding, the manual endoscopic stapler is required to have certain requirements on the actual operation method of a doctor, and the improper operation can cause traction and tearing of the stitched tissues. The other is an electric endoscope anastomat, which can enable doctors to touch keys on an endoscope fixing handle through fingers to realize all movements of the endoscope anastomat, and the electric endoscope anastomat is simple and convenient to operate compared with a manual anastomat, but when the electric stapler is powered off or fails, the electric stapler is not easy to withdraw from a chest/abdomen wall hole, and a nail bin assembly is not easy to take off after the electric stapler is withdrawn.
At present, an electric anastomat generally adopts two modes to solve the problems, one mode is that a closing handle is combined with a reset spanner button, after the closing handle is pulled, a jaw of a nail bin assembly is closed, so that the anastomat can be withdrawn from a chest/abdomen wall hole, the reset spanner button is stirred again, the nail bin assembly is reset to an initial position, the jaw is opened, and the nail bin assembly can be detached from the electric anastomat.
The other mode is to combine the closing handle with the screw handle, pull the closing handle, close the jaw of the nail bin assembly, withdraw the anastomat, and rotate the reset knob by the screw handle or the screwdriver to realize the reset.
Both the two modes need to additionally increase an operation device, have complex structures and are not easy to operate.
Based on the above, the invention provides an electric endoscopic stapler resetting device and an electric endoscopic stapler to solve the technical problems.
Disclosure of Invention
The invention aims to provide a resetting device of an electric endoscope anastomat, which aims to solve the technical problems that an operating device is additionally required to be added for resetting in the prior art, the structure is complex and the operation is difficult.
The invention also aims to provide an electric endoscope anastomat, which comprises the electric endoscope anastomat resetting device and is used for solving the technical problems that an operating device is additionally arranged in the resetting of the traditional electric endoscope anastomat, the structure is complex, and the operation is difficult.
Based on the first object, the invention provides a resetting device of an electric endoscope anastomat, which comprises a resetting part, a transmission rack, a driven gear and a bracket;
the reset part is rotatably connected to the bracket; the resetting part comprises a meshing part and a special-shaped clutch plate; the meshing part is coaxially connected with the special-shaped clutch plate, and the special-shaped clutch plate pushes the driven gear to leave the transmission rack after the meshing part is rotated; the meshing part is meshed with the transmission rack;
the transmission rack is supported in the bracket in a reciprocating manner; the transmission rack comprises an anastomosis section, a closing section and a resetting section; the anastomotic segment is meshed with the driven gear; the closing section and the resetting section are on the same plane, and the meshing part is meshed with the closing section and the resetting section respectively; when the meshing part is meshed with the reset section, the meshing part pushes the transmission rack to move towards the proximal end; the closing section is arranged at the reset Duan Yuan end, and the length of the closing section is not smaller than the closing stroke of the electric endoscopic stapler;
the driven gear is meshed with the transmission rack under the support of the elastic component.
Optionally, the above-mentioned electric endoscope anastomat resetting device, the said meshing part includes resetting pushing teeth, resetting and closing tooth sheet and reset knob; the special-shaped clutch plate, the reset closing tooth plate and the reset knob are sequentially connected through a pin shaft; the pin shaft is fixed on the bracket; the reset pushing teeth are rotatably fixed on one surface of the reset knob, which is far away from the reset closing tooth piece, and the reset pushing teeth are arranged at the far end of the pin shaft relative to the rotating shaft of the reset knob.
Optionally, in the above electric endoscope anastomat resetting device, the height of the special-shaped clutch plate is smaller than the length, before the resetting knob is shifted, the height direction of the special-shaped clutch plate does not affect the meshing of the driven gear and the transmission rack, after the resetting knob is shifted, the length direction of the special-shaped clutch plate contacts with the driven gear and pushes the driven gear to overcome the elastic force of the elastic piece and move until the driven gear is separated from the transmission rack; the special-shaped clutch plate is provided with a bulge at the outer side in the height direction, and after the driven gear is pushed away from the transmission rack, the bulge is propped against the tooth side of the driven gear to prevent the special-shaped clutch plate from moving backwards;
the special-shaped clutch plate is provided with a limiting groove, and the reset knob is provided with a limiting block; the reset knob pushes one side of the limiting groove through the limiting block to enable the special-shaped clutch plate to rotate, and the reset knob rotates in the limiting range of the limiting groove.
Optionally, in the above-mentioned electric endoscopic anastomat resetting device, meshing teeth are arranged on the outer sides of the resetting closed tooth sheets, and the circumferential length of the meshing teeth is not less than the length of the closed section.
Optionally, in the electric endoscopic anastomat resetting device, the resetting part further comprises a limiting piece; the reset knob is provided with a first limit piece mounting groove; a second limiting piece mounting groove is formed in the reset closing tooth piece; one end of the limiting piece is inserted into the limiting piece mounting groove, and the other end of the limiting piece can swing and is inserted into the second limiting piece mounting groove.
The limiting piece is arranged, so that a certain fine adjustment amount can exist when the reset closing tooth piece is anastomosed with the closing section, and the reset closing tooth piece and the closing section can be meshed more smoothly.
Optionally, in the electric endoscope anastomat resetting device, the resetting knob is provided with a limiting column; waist holes are formed in the reset closing tooth plates; the limiting column is inserted into the waist hole.
The limiting columns are arranged, so that the installation of the reset closing tooth plates can be facilitated, and meanwhile, the adjusting amplitude of the reset closing tooth plates can be limited, and dislocation is prevented.
Optionally, in the above electric endoscopic anastomat resetting device, a plane of the anastomotic segment of the driving rack is perpendicular to a plane of the closing segment and the resetting segment; the closing section and the resetting section are staggered, the closing resetting tooth piece is meshed with the closing section, and the resetting pushing tooth is meshed with the resetting section.
Optionally, in the electric endoscopic anastomat resetting device, the resetting section is of a ratchet structure; the reset pushing teeth are of pawl structures; the support is provided with a reset pushing tooth supporting table, the reset pushing tooth supporting table supports the reset pushing tooth not to be in contact with the reset section before the reset knob is pulled, and after the reset knob is pulled, the reset pushing tooth slides down from the reset pushing tooth supporting table and is meshed with the reset section; the reset pushing teeth push the transmission racks to move towards the proximal end through the reset sections.
Optionally, in the above electric endoscope anastomat resetting device, a torsion spring pin is disposed on the support, and a pushing tooth torsion spring is disposed on the torsion spring pin and is abutted to the resetting pushing tooth.
The torsion spring is arranged to enable the reset pushing teeth to be meshed with the reset section ratchets more firmly.
Based on the second object, the invention provides an electric endoscope anastomat, which comprises a nail bin assembly, a gun barrel assembly, a turning knob, an anastomat main body, a fixed handle and a resetting device of the electric endoscope anastomat;
the nail bin assembly, the gun barrel assembly, the bending knob, the anastomat main body and the fixed handle are connected in sequence;
the electric endoscope anastomat comprises an anastomat main body, wherein the anastomat main body is provided with a manual reset cover, the electric endoscope anastomat reset device is fixed in the anastomat main body, and the electric endoscope anastomat reset device can be operated by opening the manual reset cover.
The resetting device of the electric endoscope anastomat comprises a resetting part, a transmission rack, a driven gear and a bracket; the reset part is rotatably connected to the bracket; the resetting part comprises a meshing part and a special-shaped clutch plate; the meshing part is coaxially connected with the special-shaped clutch plate, and the special-shaped clutch plate pushes the driven gear to leave the transmission rack after the meshing part is rotated; the meshing part is meshed with the transmission rack; the transmission rack is supported in the bracket in a reciprocating manner; the transmission rack comprises an anastomosis section, a closing section and a resetting section; the anastomotic segment is meshed with the driven gear; the closing section and the resetting section are on the same plane, and the meshing part is meshed with the closing section and the resetting section respectively; when the meshing part is meshed with the reset section, the meshing part pushes the transmission rack to move towards the proximal end; the closing section is arranged at the reset Duan Yuan end, and the length of the closing section is not smaller than the closing stroke of the electric endoscopic stapler; the driven gear is meshed with the transmission rack under the support of the elastic component. The driven gear and the transmission rack are disengaged through one device of the reset part, the transmission rack is retracted to the initial position, the jaw of the nail bin assembly is opened, the jaw can be closed again through the reset part, and the jaw is opened again after the jaw is closed. Therefore, the technical problems that an operation device is additionally required to be added for resetting the existing electric endoscope anastomat, the structure is complex and the operation is difficult are solved.
The electric endoscope anastomat comprises a resetting device of the electric endoscope anastomat; therefore, the electric endoscope anastomat has all the advantages of the upper electric endoscope anastomat resetting device.
Based on this, compared with the prior art, the invention has the advantages of realizing multiple functions of resetting, closing and resetting the nail bin assembly by one device, along with simple structure and easy operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is an external view of a reset device of an electric endoscopic stapler according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the powered endoscopic stapler apparatus of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a resetting device of an electric endoscopic stapler according to an embodiment of the present invention;
FIG. 4 is an enlarged view of the powered endoscopic stapler apparatus of FIG. 3;
FIG. 5 is a schematic view of a reduction device of an electric endoscopic stapler according to an embodiment of the present invention, with a bracket removed;
FIG. 6 is an enlarged view of the powered endoscopic stapler apparatus of FIG. 5 with the bracket removed;
FIG. 7 is a cross-sectional view of a reduction device for an electric endoscopic stapler according to an embodiment of the present invention when a reduction knob is cocked;
fig. 8 is a schematic structural view of a driving rack according to an embodiment of the present invention;
FIG. 9 is a schematic view of a special-shaped clutch plate according to an embodiment of the present invention;
FIG. 10 is a schematic view of a reset closing tooth structure according to an embodiment of the present invention;
FIG. 11 is a schematic view of a portion of an electric endoscopic stapler provided by an embodiment of the present invention except for a cartridge assembly;
fig. 12 is a schematic view of a cartridge assembly of an electric endoscopic stapler according to an embodiment of the present invention.
Icon: 1-a barrel assembly; 22-turning a knob; 31-a fixed handle; 35-manual reset cap; 60-resetting the spanner button; 61-special-shaped clutch plates; 62-resetting the closure tooth; 63-resetting the pushing teeth; 64-limiting sheets; 65-pushing tooth torsion springs; 66-a torsion spring pin shaft; 308-clutch pressing; 309-a gear support spring; 311-driven gear; 312-a drive rack; 312-1 closed segment; 312-2-reset segment; 51-cartridge assembly.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the term "proximal" refers to a direction approaching an operator, and "distal" refers to a direction away from the operator.
In addition, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 2-10, the present embodiment provides a resetting device of an electric endoscope anastomat, which comprises a resetting part, a transmission rack, a driven gear and a bracket;
the reset part is rotatably connected to the bracket; the resetting part comprises a meshing part and a special-shaped clutch plate; the meshing part is coaxially connected with the special-shaped clutch plate, and the special-shaped clutch plate pushes the driven gear to leave the transmission rack after the meshing part is rotated; the meshing part is meshed with the transmission rack; the transmission rack is supported in the bracket in a reciprocating manner; the transmission rack comprises an anastomosis section, a closing section and a resetting section; the anastomotic segment is meshed with the driven gear; the closing section and the resetting section are on the same plane, and the meshing part is meshed with the closing section and the resetting section respectively; when the meshing part is meshed with the reset section, the meshing part pushes the transmission rack to move towards the proximal end; the closing section is arranged at the reset Duan Yuan end, and the length of the closing section is not smaller than the closing stroke of the electric endoscopic stapler; the driven gear is meshed with the transmission rack under the support of the elastic component.
The driven gear is connected with the motor of the electric endoscope anastomat in a synchronous rotation way through an elastic part.
The clutch pressing piece can be arranged above the driven gear, so that the force of the special-shaped clutch pressing piece acting on the driven gear is kept balanced.
When the electric anastomat fails, the reset part is rotated to the far end, the opposite clutch plate rotates and pushes the driven gear to move downwards against the elastic force of the elastic part, so that the driven gear is separated from the transmission rack, and at the moment, the movement of the rack is not influenced by the motor any more and is completely controlled by the reset part. If the cartridge assembly fails in the closed half position or after the closure, the engagement portion may be positioned in the middle or at the proximal end of the closure segment, at which time the engagement portion engages the drive rack, continuing to rotate the reset portion distally, the engagement portion pushes the drive rack to move proximally, the cartridge assembly is gradually opened as the rack moves, and tissue clamped in the cartridge assembly is released until the cartridge assembly is fully opened, completing the reset, at which time the engagement portion engages the closure segment. At this time, the reset part is reversely rotated, the transmission rack moves distally under the action of the meshing part, and the length of the closing section is not smaller than the closing stroke of the electric endoscopic stapler, so that the nail bin assembly jaw can be closed by reversely rotating the reset part, and the nail bin assembly jaw can be withdrawn from the chest/abdominal wall hole. After withdrawal, the reset portion is rotated distally again to reset again so that the cartridge assembly can be removed.
As shown in fig. 3-7, in an alternative scheme of this embodiment, the engagement portion includes a reset pushing tooth, a reset closing tooth piece and a reset knob; the special-shaped clutch plate, the reset closing tooth plate and the reset knob are sequentially connected through a pin shaft; the pin shaft is fixed on the bracket; the reset pushing teeth are rotatably fixed on one surface of the reset knob, which is far away from the reset closing tooth piece, and the reset pushing teeth are arranged at the far end of the pin shaft relative to the rotating shaft of the reset knob.
Because the reset pushing teeth and the reset closing teeth sheets are provided with the reset pulling buttons, the meshing parts can be mutually unaffected when being respectively meshed with the closing section and the reset section, and the stability and the safety of the device are ensured. The reset pushing teeth are arranged at the far end of the pin shaft relative to the rotating shaft of the reset knob, so that the reset pushing teeth can be driven to do reciprocating motion when the reset knob rotates.
As shown in fig. 9, in an alternative scheme of this embodiment, the height of the special-shaped clutch plate is smaller than the length, before the reset knob is shifted, the height direction of the special-shaped clutch plate does not affect the engagement of the driven gear and the transmission rack, after the reset knob is shifted, the length direction of the special-shaped clutch plate contacts with the driven gear and pushes the driven gear to overcome the elastic force of the elastic piece to move until the driven gear is separated from the transmission rack; the special-shaped clutch plate is provided with a bulge at the outer side in the height direction, and after the driven gear is pushed away from the transmission rack, the bulge is propped against the tooth side of the driven gear to prevent the special-shaped clutch plate from moving backwards;
the special-shaped clutch plate is provided with a limiting groove, and the reset knob is provided with a limiting block; the reset knob pushes one side of the limiting groove through the limiting block to enable the special-shaped clutch plate to rotate, and the reset knob rotates in the limiting range of the limiting groove.
When the reset knob is rotated like this, the special-shaped clutch plate pushes the driven gear downwards until the driven gear is separated from the transmission rack, and as the protrusions are arranged on the outer side of the height direction of the special-shaped clutch plate, after the driven gear is pushed away from the transmission rack, the protrusions are propped against the tooth side of the driven gear, so that the special-shaped clutch plate is prevented from moving backwards, the motor can be kept from influencing the movement of the transmission rack, and the stability of the device is ensured. Due to the arrangement of the limiting grooves, the reset knob can still rotate within a required range, and the reset closed tooth piece is driven to rotate and the reset pushing tooth is driven to reciprocate.
As shown in fig. 10, in an alternative version of this embodiment, the outside of the reset closing tooth piece is provided with a meshing tooth, and the circumferential length of the meshing tooth is not less than the length of the closing section. So as to ensure that the reset closing tooth piece and the closing section can be effectively meshed to finish the closing of the jaw.
The reset closing tooth piece can be provided with a round hole to reduce weight, and the through-hole on the reset closing tooth piece can be outwards expanded to form more than one groove to reduce friction force of the round hole to the pin shaft.
1-4 and 10, in an alternative scheme of the embodiment, the reset portion further comprises a limiting piece; the reset knob is provided with a first limit piece mounting groove; a second limiting piece mounting groove is formed in the reset closing tooth piece; one end of the limiting piece is inserted into the limiting piece mounting groove, and the other end of the limiting piece can swing and is inserted into the second limiting piece mounting groove.
The limiting piece is arranged, so that a certain fine adjustment amount can exist when the reset closing tooth piece is anastomosed with the closing section, and the reset closing tooth piece and the closing section can be meshed more smoothly.
As shown in fig. 10, in an alternative scheme of this embodiment, a limit post (not labeled in the drawing) is disposed on the reset knob; waist holes are formed in the reset closing tooth plates; the limiting column is inserted into the waist hole.
The limiting columns are arranged, so that the installation of the reset closing tooth plates can be facilitated, and meanwhile, the adjusting amplitude of the reset closing tooth plates can be limited, and dislocation is prevented.
As shown in fig. 8, in an alternative scheme of this embodiment, the plane of the anastomotic segment of the driving rack is perpendicular to the planes of the closing segment and the resetting segment; the closing section and the resetting section are staggered, the closing resetting tooth piece is meshed with the closing section, and the resetting pushing tooth is meshed with the resetting section.
The downward movement, resetting and closing actions of the driven gear are respectively generated at different positions of the rack, the actions are not interfered with each other, and the stability, the safety and the reliability of the device are ensured.
As shown in fig. 8, in an alternative of this embodiment, the reset segment is a ratchet structure; the reset pushing teeth are of pawl structures; the support is provided with a reset pushing tooth supporting table, the reset pushing tooth supporting table supports the reset pushing tooth not to be in contact with the reset section before the reset knob is pulled, and after the reset knob is pulled, the reset pushing tooth slides down from the reset pushing tooth supporting table and is meshed with the reset section; the reset pushing teeth push the transmission racks to move towards the proximal end through the reset sections.
When the reset knob is rotated to the far end, the reset pushing teeth can push the transmission rack to move to the near end, when the reset knob is rotated reversely, the pawl structure of the reset pushing teeth slides on the ratchet structure of the reset section, no acting force is generated on the transmission rack, and when the reset pushing teeth are meshed with the reset section, only the force to the near end can be generated on the transmission rack, and the transmission rack moves to the near end, so that the jaw can be opened smoothly. And during the closing action, the reverse rotation of the reset knob does not influence the movement of the rack to the distal end.
As shown in fig. 3-6, in an alternative scheme of this embodiment, a torsion spring pin is disposed on the support, and a pushing tooth torsion spring is disposed on the torsion spring pin, and the pushing tooth torsion spring is abutted with the reset pushing tooth.
The torsion spring is arranged to enable the reset pushing teeth to be meshed with the reset section ratchets more firmly.
Example two
11-12, this embodiment provides an electric endoscopic stapler including a cartridge assembly, a barrel assembly, a turn knob, a stapler body, a stationary handle, and an electric endoscopic stapler resetting device as described above;
the nail bin assembly, the gun barrel assembly, the bending knob, the anastomat main body and the fixed handle are connected in sequence;
the electric endoscope anastomat comprises an anastomat main body, wherein the anastomat main body is provided with a manual reset cover, the electric endoscope anastomat reset device is fixed in the anastomat main body, and the electric endoscope anastomat reset device can be operated by opening the manual reset cover.
When the electric endoscope anastomat fails, the manual reset cover is opened, the reset part is rotated towards the far end, so that the transmission rack moves towards the near end, the transmission rack drives the gun barrel component, and further drives the jaw of the nail bin component to open, and reset is completed; the reset part is rotated reversely, so that the transmission rack moves to the far end, the transmission rack drives the gun barrel component, the jaw of the nail bin component is driven to be closed, the reset part is rotated to the far end again, and the jaw of the nail bin component is opened again to finish reset.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The resetting device of the electric endoscope anastomat is characterized by comprising a resetting part, a transmission rack, a driven gear and a bracket;
the reset part is rotatably connected to the bracket; the resetting part comprises a meshing part and a special-shaped clutch plate; the meshing part is coaxially connected with the special-shaped clutch plate, and the special-shaped clutch plate pushes the driven gear to leave the transmission rack after the meshing part is rotated; the meshing part is meshed with the transmission rack;
the transmission rack is supported in the bracket in a reciprocating manner; the transmission rack comprises an anastomosis section, a closing section and a resetting section; the anastomotic segment is meshed with the driven gear; the closing section and the resetting section are on the same plane, and the meshing part is meshed with the closing section and the resetting section respectively; when the meshing part is meshed with the reset section, the meshing part pushes the transmission rack to move towards the proximal end; the closing section is arranged at the reset Duan Yuan end, and the length of the closing section is not smaller than the closing stroke of the electric endoscopic stapler;
the driven gear is meshed with the transmission rack under the support of the elastic component.
2. The electric endoscopic stapler reset device according to claim 1, wherein said engagement portion includes a reset pushing tooth, a reset closing tooth piece, and a reset knob; the special-shaped clutch plate, the reset closing tooth plate and the reset knob are sequentially connected through a pin shaft; the pin shaft is fixed on the bracket; the reset pushing teeth are rotatably fixed on one surface of the reset knob, which is far away from the reset closing tooth piece, and the reset pushing teeth are arranged at the far end of the pin shaft relative to the rotating shaft of the reset knob.
3. The reset device of the electric endoscope anastomat according to claim 2, wherein the height of the special-shaped clutch plate is smaller than the length, the height direction of the special-shaped clutch plate does not affect the meshing of the driven gear and the transmission rack before the reset knob is shifted, and after the reset knob is shifted, the length direction of the special-shaped clutch plate is contacted with the driven gear and pushes the driven gear to move against the elastic force of the elastic part until the driven gear is separated from the transmission rack; the special-shaped clutch plate is provided with a bulge at the outer side in the height direction, and after the driven gear is pushed away from the transmission rack, the bulge is propped against the tooth side of the driven gear to prevent the special-shaped clutch plate from moving backwards;
the special-shaped clutch plate is provided with a limiting groove, and the reset knob is provided with a limiting block; the reset knob pushes one side of the limiting groove through the limiting block to enable the special-shaped clutch plate to rotate, and the reset knob rotates in the limiting range of the limiting groove.
4. The reset device of the electric endoscopic stapler according to claim 2, wherein the outside of the reset closing tooth sheet is provided with a meshing tooth, and the circumferential length of the meshing tooth is not smaller than the length of the closing section.
5. The electric endoscopic stapler reset device according to claim 2, wherein the reset portion further comprises a limit piece; the reset knob is provided with a first limit piece mounting groove; a second limiting piece mounting groove is formed in the reset closing tooth piece; one end of the limiting piece is inserted into the limiting piece mounting groove, and the other end of the limiting piece can swing and is inserted into the second limiting piece mounting groove.
6. The electric endoscopic stapler reset device according to claim 2, wherein a limit post is provided on the reset knob; waist holes are formed in the reset closing tooth plates; the limiting column is inserted into the waist hole.
7. The powered endoscopic stapler apparatus according to claim 2, wherein said plane of said anastomotic segment of said drive rack is perpendicular to said planes of said closing segment and said resetting segment; the closing section and the resetting section are arranged in a staggered mode, the resetting closing tooth piece is meshed with the closing section, and the resetting pushing tooth is meshed with the resetting section.
8. The electric endoscopic stapler reset device according to claim 2, wherein said reset segment is a ratchet structure; the reset pushing teeth are of pawl structures; the support is provided with a reset pushing tooth supporting table, the reset pushing tooth supporting table supports the reset pushing tooth not to be in contact with the reset section before the reset knob is pulled, and after the reset knob is pulled, the reset pushing tooth slides down from the reset pushing tooth supporting table and is meshed with the reset section; the reset pushing teeth push the transmission racks to move towards the proximal end through the reset sections.
9. The electric endoscopic stapler resetting device according to claim 2, wherein a torsion spring pin is provided on the bracket, and a pushing tooth torsion spring is provided on the torsion spring pin, and the pushing tooth torsion spring is abutted with the resetting pushing tooth.
10. An electric endoscopic stapler comprising a cartridge assembly, a barrel assembly, a turn knob, a stapler body, a fixed handle, and an electric endoscopic stapler resetting device according to any one of claims 1-9; it is characterized in that the method comprises the steps of,
the nail bin assembly, the gun barrel assembly, the bending knob, the anastomat main body and the fixed handle are connected in sequence;
the electric endoscope anastomat comprises an anastomat main body, wherein the anastomat main body is provided with a manual reset cover, the electric endoscope anastomat reset device is fixed in the anastomat main body, and the electric endoscope anastomat reset device can be operated by opening the manual reset cover.
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| CN201811631237.4A CN109498090B (en) | 2018-12-29 | 2018-12-29 | Electric endoscope anastomat resetting device and electric endoscope anastomat |
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| CN112472175B (en) * | 2019-09-11 | 2022-02-18 | 江苏风和医疗器材股份有限公司 | Surgical instrument |
| CN111248961B (en) * | 2020-01-17 | 2020-12-08 | 盈甲医疗器械制造（上海）有限公司 | Manual rotation and electric bending switching device and electric anastomat thereof |
| CN112754569A (en) * | 2021-01-18 | 2021-05-07 | 常州安康医疗器械有限公司 | Electric endoscope anastomat with reset function |
| CN116999109A (en) * | 2022-04-29 | 2023-11-07 | 江苏风和医疗器材股份有限公司 | Surgical instrument |
| CN115462852B (en) * | 2022-09-21 | 2024-01-05 | 常州安康医疗器械有限公司 | Transmission mechanism and electric endoscope anastomat |
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