CN104107078A - Anastomat and nail anvil component thereof - Google Patents
Anastomat and nail anvil component thereof Download PDFInfo
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- CN104107078A CN104107078A CN201310136650.4A CN201310136650A CN104107078A CN 104107078 A CN104107078 A CN 104107078A CN 201310136650 A CN201310136650 A CN 201310136650A CN 104107078 A CN104107078 A CN 104107078A
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- strutting arrangement
- nail
- bracing
- connecting rod
- pivotal block
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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
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
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- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a pivotable nail anvil component. An anastomat provided with the nail anvil component comprises a nail anvil base, a pivot seat, a supporting device, a connecting rod, an offset device and a stop device. The connecting rod is pivotally connected with the pivot seat, and the offset device acts with the connecting rod and is used for generating offset force of relative pivotal motion of the nail anvil base and the connecting rod; when located at the non-hitting position, the supporting device is meshed with the connecting rod to resist the offset force, and the pivotal motion of the nail anvil base and the connecting rod cannot be generated; when moving to the position after hit, the supporting device is demeshed with the connecting rod, and the pivotal motion of the nail anvil base and the connecting rod can be generated under the action of the offset force; the stop device is arranged between the supporting device and the nail anvil base and is used for preventing the supporting device from moving to the non-hitting position from the position after hit. The stop device is arranged between the supporting device and the nail anvil base, so that the nail anvil base is prevented from pivotally rotating relative to the connecting rod and restoring to generally vertical state with the same, and stability of the pivotal rotating function of the pivotal nail anvil component is improved.
Description
Technical field
The present invention relates to surgical operation anastomat field, relate in particular to the nail-anvil assembly for circular anastomosis device.
Background technology
Surgical operation anastomat is widely used in various surgical operations at present, so that tissue is sewed up/to be coincide.Known surgical operation anastomat has the nail anvil and the percussion lock that include the nail bin of staple, be oppositely arranged with nail bin conventionally, percussion lock for by staple from nail bin percussion out, through tissue and be shaped at nail anvil.The type of current surgical operation anastomat mainly contains linear anastomat and circular anastomosis device, and wherein, linear anastomat is used to form a row or multi-row staple line, and circular anastomosis device is used to form the circular staple line of a circle or multi-turn.When use, doctor is placed in tissue between nail bin and nail anvil, forms staple line by percussion in tissue, to realize the stitching of tissue/coincide.
Circular anastomosis device has successfully been applied for many years in surgical operation, and it is generally used for pipe to be sewn onto in the operation in other anatomical structures, for example, and harmonization of the stomach operation on esophagus.In common end-end anastomosis operation, a part for intestinal is because pathological changes is removed, and remaining part is connected by circular anastomosis device again.For connecting tubular structure, nail anvil is fixed in one end of intestinal, and the other end of intestinal is positioned over the nail bin of anastomat, and nail anvil has the connecting rod that is removably connected to anastomat.In the time that nail anvil is connected to anastomat by connecting rod, nail anvil, near nail bin, is clamped in the two ends of intestinal between nail anvil and nail bin.Afterwards, anastomat is pulled the trigger, and staple is pulled the trigger out nail bin, through the two ends of intestinal, and be shaped on nail anvil, and the conglobate staple line of shape.When percussion, endless knife is actuated to excise the tissue of circular staple line inside, thereby sets up passage between two sections of intestinals.After having pulled the trigger, when nail anvil exits, need to pass through staple line part, because the diameter of circular staple line is less than the diameter of the nail anvil base of nail anvil, thereby can produce obvious resistance to exiting of nail anvil.And then exiting of nail anvil likely can cause the distortion of staple line or destroy staple line.
In order to solve the problem that exiting of nail anvil is produced, develop pivotable nail anvil.The nail anvil base of this nail anvil can be pivoted to the pivot position parallel with connecting rod cardinal principle with respect to connecting rod, form relatively little profile, thereby reduce nail anvil and exit the area contacting with anastomotic position when organizing anastomotic position, and then reduce to exit resistance, exiting of nail anvil is more prone to, reduced its impact for match result.
But existing controllability that can pivotable nail anvil is poor, pivoting action is unstable, exits nail anvil base in process and often can return to the home position vertical with connecting rod, thereby lost the effect of pivotable at nail anvil.
Therefore, need a kind of surgical operation anastomat, particularly its nail anvil, to solve the above-mentioned problems in the prior art.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of pivotable nail-anvil assembly, it is characterized in that, described nail-anvil assembly comprises: nail anvil base, described nail anvil base comprises pivotal block, bracing or strutting arrangement, described bracing or strutting arrangement is arranged on described nail anvil base, can along described pivotal block never firing position move to percussion after position, connecting rod, described connecting rod and described pivotal block are pivotally connected pivotly, bias unit, described bias unit acts on mutually with described connecting rod, for generation of cause described nail anvil base and described connecting rod be pivoted relative to each other motion bias force, wherein, when described bracing or strutting arrangement is during at described not firing position, described bracing or strutting arrangement engages described connecting rod, resist described bias force, so that described nail anvil base does not produce relative pivoting action with described connecting rod, after described bracing or strutting arrangement moves to described percussion when position, described bracing or strutting arrangement departs from and engages with described connecting rod, under the effect of described bias force, described nail anvil base produces relative pivoting action with described connecting rod, stop bit device, described stop bit device is arranged between described bracing or strutting arrangement and described nail anvil base, for prevent described bracing or strutting arrangement position from described percussion move to described in firing position not.
Preferably, described pivotal block is column; Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block; Described stop bit device is the reverse buckling type projection being arranged on described pivotal block, fit clearance between described bracing or strutting arrangement and described pivotal block and the size of described projection are arranged so that: described projection allows described bracing or strutting arrangement position from described not firing position moves to described percussion, and prevent described bracing or strutting arrangement position from pulling the trigger move to described in firing position not.
Preferably, described pivotal block is column; Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block; Described stop bit device is the flexure strip outwards opening being arranged on described pivotal block, described flexure strip open direction be described bracing or strutting arrangement from described not firing position to described percussion the direction of position, make, when when described bracing or strutting arrangement is from described not firing position to described percussion, move position, compressible described flexure strip and passing through; When described bracing or strutting arrangement, from described percussion, position is to described not when firing position moves, and the described flexure strip outwards being opened stops.
Preferably, described pivotal block is column; Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block; The external diameter major part that described stop bit device is described pivotal block, fit clearance between the described external diameter major part of described bracing or strutting arrangement and described pivotal block is set to form tight fit, make: when described bracing or strutting arrangement is from described not firing position moves to described percussion when position, between described bracing or strutting arrangement and described pivotal block, form tight fit, with stop described bracing or strutting arrangement position from described percussion get back to described in firing position not.
Preferably, described pivotal block is column; Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block; Described stop bit device is the reverse buckling type projection on elasticity pallet and the described nail anvil base on described bracing or strutting arrangement, the size of described elasticity pallet and described reverse buckling type projection is arranged so that: allow described bracing or strutting arrangement position from described not firing position moves to described percussion, stop described bracing or strutting arrangement position from described percussion move to described in firing position not.
Preferably, described pivotal block is provided with fluting, and the sidewall of described fluting both sides is provided with pivot hole; One end of described connecting rod is arranged in described fluting, and described end is provided with pivot hole; Pivot, described pivot is arranged in the pivot hole of described pivotal block and described connecting rod, so that described pivotal block and described connecting rod are pivotally connected pivotly.
Preferably, described bias unit is spring.
Preferably, described bracing or strutting arrangement has wide edge.
The invention provides a kind of circular anastomosis device, described circular anastomosis device comprises aforesaid any nail-anvil assembly.
The present invention by arranging stop bit device between bracing or strutting arrangement and pivotal block, prevent that bracing or strutting arrangement from moving to primary importance from the second position, and then prevent that nail anvil base from reverting to the state that becomes substantially vertical with it with respect to connecting rod pivotable, improve the stability of functions of pivoting that can pivotable nail-anvil assembly.
In summary of the invention part, introduced the concept of a series of reduced forms, this will further describe in detailed description of the invention part.Content part of the present invention does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to determine technical scheme required for protection.
Below in conjunction with accompanying drawing, describe advantages and features of the invention in detail.
Brief description of the drawings
Following accompanying drawing of the present invention is used for understanding the present invention in this as a part of the present invention.Shown in the drawings of embodiments of the invention and description thereof, be used for explaining principle of the present invention.In the accompanying drawings,
Fig. 1 is the schematic diagram of the surgical operation circular anastomosis device of prior art;
Fig. 2 is the schematic diagram of the end of the slender bodies that is connected with nail-anvil assembly;
Fig. 3 is according to the schematic diagram of the pivotable nail-anvil assembly of a detailed description of the invention of the present invention;
Fig. 4 is according to the schematic diagram of the pivotal block of a detailed description of the invention of the present invention;
Fig. 5 is according to the schematic diagram of the connecting rod of a detailed description of the invention of the present invention;
Fig. 6 is according to the schematic diagram of the bracing or strutting arrangement of a detailed description of the invention of the present invention;
Fig. 7 is the cutaway view under pivotable state not according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention;
Fig. 8 is according to the schematic diagram of the pivotable nail-anvil assembly of a detailed description of the invention of the present invention protuberance engagement connecting rod under pivotable state not;
Fig. 9 is the cutaway view under pivotable state according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention;
Figure 10 is according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention protuberance and the out-of-gear schematic diagram of connecting rod under pivotable state;
Figure 11 utilizes the schematic diagram of holding-hold anastomosis operation according to the surgical operation circular anastomosis device of a detailed description of the invention of the present invention;
Figure 12 is according to the schematic diagram of the nail-anvil assembly of a detailed description of the invention of the present invention;
Figure 13 is in the schematic diagram of firing position not according to the bracing or strutting arrangement of a detailed description of the invention of the present invention;
Figure 14 is in pulling the trigger the schematic diagram of rear position according to the bracing or strutting arrangement of a detailed description of the invention of the present invention;
Figure 15 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention;
Figure 16 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention;
Figure 17 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention;
Figure 18 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.
Detailed description of the invention
In the following description, a large amount of concrete details have been provided to more thorough understanding of the invention is provided.But, it will be apparent to one skilled in the art that the present invention can be implemented without one or more these details.In other example, for fear of obscuring with the present invention, be not described for technical characterictics more well known in the art.
In order thoroughly to understand the present invention, will detailed structure be proposed in following description.Obviously, execution of the present invention is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present invention is described in detail as follows, but except these are described in detail, the present invention can also have other embodiments.
The invention provides a kind of have can pivotable nail-anvil assembly surgical operation circular anastomosis device, the present invention is by can arrange stop bit device in pivotable nail-anvil assembly, improve the controllability of the pivoting action of nail-anvil assembly, improved the stability of pivoting action, thus solved can pivotable nail-anvil assembly exiting the problem that returns to vertical initial position in process from pivot position.
Below in conjunction with to being described in detail according to the specific embodiment of the present invention.
Fig. 1 is the schematic diagram of the surgical operation circular anastomosis device of prior art.As shown in the figure, circular anastomosis device 1 comprises nail-anvil assembly 2, slender bodies 3 and handle 4.Nail-anvil assembly 2 is removably connected with an end of slender bodies 3, and the other end of slender bodies 3 is provided with handle 4.
Handle 4 generally includes percussion handle 41 and nail anvil adjustment member 42.Percussion handle 41 is for pulling the trigger staple and advancing cutter, so that tissue is sewed up and cutting.Nail anvil adjustment member 42 is for the distance between regulating nail anvil assembly 2 and slender bodies 3, to clamp tissue to be coincide between nail-anvil assembly 2 and slender bodies 3.
Fig. 2 is the schematic diagram of the end of the slender bodies that is connected with nail-anvil assembly.As shown in the figure, this end is provided with nail bin 31, endless knife 32, propeller 33 and connecting-bar connector 34 conventionally.Nail bin 31 is annular, is wherein provided with the staple by annular spread.The inner side of nail bin 31 is provided with endless knife 32 and propeller 33.Be provided with connecting-bar connector 34 in the central authorities of this end.
Fig. 3 is according to the schematic diagram of the pivotable nail-anvil assembly of a detailed description of the invention of the present invention.As shown in the figure, nail-anvil assembly 2 comprises nail anvil base 21, bracing or strutting arrangement 22, spring 23 and connecting rod 24.Nail anvil base 21 is roughly disc, and the center is provided with the pivotal block 25 of the column vertical with its disc face.One end of connecting rod 24 can removably be connected to the connecting-bar connector 34 of slender bodies 3, to form dismountable connection between nail-anvil assembly 2 and slender bodies 3.
Fig. 4 is according to the schematic diagram of the pivotal block of a detailed description of the invention of the present invention.As shown in the figure, the free end of pivotal block 25 is provided with fluting 251 and pivot hole 252.Fig. 5 is according to the schematic diagram of the connecting rod of a detailed description of the invention of the present invention.As shown in the figure, an end of connecting rod 24 is provided with pivot hole 241, and this end can be assembled in the fluting 251 of pivotal block 25, and pivot hole 252, pivot hole 241 can cooperatively interact with pivot 26 so that nail anvil base 21 forms pivotable pivotally connected with connecting rod 24.
Be bias unit at this specific embodiment medi-spring 23, for generation of the bias force that causes connecting rod 24 and nail anvil base 21 to be pivoted relative to each other, bias unit can also be the device that other elastomeric elements or other can produce described bias force.As example, bias unit is arranged between bracing or strutting arrangement 22 and connecting rod 24 in the present embodiment, and bias unit also can be arranged between nail anvil base 21 and connecting rod 24.
Fig. 6 is according to the schematic diagram of the bracing or strutting arrangement of a detailed description of the invention of the present invention.As shown in the figure, bracing or strutting arrangement 22 is roughly cylindrical shape, and its middle part is provided with hole 221, to be sleeved on pivotal block 25.Bracing or strutting arrangement 22 is sleeved on pivotal block 25, can move along pivotal block 25.Be provided with the protuberance 222 extending internally out in the position corresponding with the fluting 251 of pivotal block 25, hole 221.Be provided with in the embodiment of spring 23 at bracing or strutting arrangement 22, bracing or strutting arrangement 22 is provided with the lug 223 for mounting spring 23.
Fig. 7 is the cutaway view under pivotable state not according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention.Fig. 8 is according to the schematic diagram of the pivotable nail-anvil assembly of a detailed description of the invention of the present invention protuberance engagement connecting rod under pivotable state not.As shown in the figure, when bracing or strutting arrangement 22 is during in firing position not, protuberance 222 engages connecting rod 24, the bias force being produced with antagonistic spring 23, keep nail anvil base 21 in connecting rod 24 vertical position substantially, there is not relative pivoting action.
Fig. 9 is the cutaway view under pivotable state according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention.Figure 10 is according to the pivotable nail-anvil assembly of a detailed description of the invention of the present invention protuberance and the out-of-gear schematic diagram of connecting rod under pivotable state.As shown in the figure, in the time that bracing or strutting arrangement 22 moves to the rear position of percussion along arrow A direction, protuberance 222 departs from and engages with connecting rod 24, under the bias force effect producing at spring 23, there is relative pivoting action with connecting rod 24 along arrow B direction in nail anvil base 21, cause nail anvil base 21 to move to the position parallel with connecting rod 24 cardinal principles, form relatively little nail-anvil assembly profile, while exiting to reduce nail-anvil assembly with organize the contact area of anastomotic part, and then reduce to exit resistance, reduce the destruction for anastomotic part while exiting, make to exit being more prone to.
Figure 11 utilizes the schematic diagram of holding-hold anastomosis operation according to the surgical operation circular anastomosis device of a detailed description of the invention of the present invention.As shown in the figure, when operation, nail-anvil assembly 2 is placed in the tubular tissue 5 for the treatment of identical pocket closing in of a side, 3 of slender bodiess are placed in the tissue 5 ' that opposite side treats that identical pocket closes up, connecting rod 24 can stretch out from the pocket of a side closes up, pocket through opposite side closes up, and is connected to slender bodies 3 by connecting-bar connector 34.
Doctor is by the distance between nail anvil adjustment member 42 regulating nail anvil assemblies 2 and slender bodies 3, both sides are treated to identical tissue holder is held between nail-anvil assembly 2 and slender bodies 3.
Subsequently, doctor is by the percussion that coincide of percussion handle 41, and staple is pulled the trigger out nail bin 31, the tissue through nail-anvil assembly 2 and slender bodies 3, and shaping on nail-anvil assembly 21, thus in tissue, form annular staple line.
Meanwhile, endless knife 32 is pushed to nail-anvil assembly 21, to excise the tissue of staple line inner side, and waiting to coincide and form passage between tissue in both sides.
Under the effect of percussion handle 41, propeller 33 is also pushed to nail-anvil assembly 2, propeller 33 acts on bracing or strutting arrangement 22, make bracing or strutting arrangement 22 along arrow A direction in Fig. 9 and 10, from move to percussion with respect to the not firing position of pivotal block 25 position, cause protuberance 222 to depart from and engage with connecting rod 24, nail anvil base 21 spring 23 under effect along arrow B direction in Fig. 9 and 10, be pivoted to position substantially in parallel with respect to connecting rod 24, form relatively little profile, be beneficial to nail-anvil assembly subsequently and exit by anastomotic position.
But, exit in process at nail-anvil assembly 2, under the active force of the anastomotic position of organizing, nail anvil base 21 reverts to the state vertical with connecting rod 24 cardinal principles possibly, thereby cannot realize the pivot action of nail-anvil assembly.
In order to address the above problem, the invention provides a kind of pivotable nail-anvil assembly.Described pivotable nail-anvil assembly is provided with stop bit device, this stop bit device is arranged between bracing or strutting arrangement and pivotal block, it allows bracing or strutting arrangement position from move to percussion with respect to the not firing position of pivotal block, but can prevent that bracing or strutting arrangement position from pulling the trigger from moving to not firing position, thereby prevent that nail anvil base from reverting to the position perpendicular to connecting rod substantially from being in substantially parallel relationship to the position pivotable of connecting rod, so that nail-anvil assembly is exiting the relatively little profile of maintenance in process, reduce the destruction to anastomotic position, the resistance while reducing to exit.
Figure 12 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.As shown in the figure, in this embodiment, stop bit device is the reverse buckling type projection 253 being arranged on pivotal block 25.The cross section of this reverse buckling type projection 253 is triangular in shape or trapezoidal, bracing or strutting arrangement never firing position to be protruding inclined-plane gradually, be phase step type boss in bracing or strutting arrangement position from pulling the trigger to the direction of firing position not in the direction of position after percussion from pivotal block 25 surfaces.
Figure 13 is in the schematic diagram of firing position not according to the bracing or strutting arrangement of a detailed description of the invention of the present invention.As shown in the figure, bracing or strutting arrangement 22, in the time of firing position not, is positioned at the side of reverse buckling type projection 253 near its inclined-plane.
Figure 14 is in pulling the trigger the schematic diagram of rear position according to the bracing or strutting arrangement of a detailed description of the invention of the present invention.As shown in the figure, bracing or strutting arrangement 22, in the time pulling the trigger rear position, is positioned at the side of reverse buckling type projection 253 near its boss.
Fit clearance between bracing or strutting arrangement 22 and pivotal block 25 and the size of reverse buckling type projection 253 are set, with allow bracing or strutting arrangement 22 never firing position move to percussion after position, and prevent bracing or strutting arrangement 22 again from pulling the trigger position move back to not firing position, thereby prevent that nail anvil base 21 is pivoted into and connecting rod 24 vertical state substantially again.Wherein, reverse buckling type projection can be along the pivotal block periphery projection of the one of extension continuously, can be also the multiple projections along pivotal block periphery Discrete Distribution.
Figure 15 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.As shown in the figure, in this embodiment, stop bit device is the flexure strip outwards opening 254 being arranged on pivotal block 25.Flexure strip 254 open direction be bracing or strutting arrangement never firing position to the direction of position after percussion, make, when bracing or strutting arrangement 22 is when never firing position moves to position after percussion, compressible elastomeric sheet 254 and passing through; When bracing or strutting arrangement 22, from pulling the trigger, position is not when firing position moves, and the flexure strip 254 that can outwards be opened blocks.
Figure 16 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.As shown in the figure, in this embodiment, stop bit device is the external diameter major part 255 of pivotal block 25.Fit clearance between the hole 221 of bracing or strutting arrangement 22 and the external diameter major part 255 of pivotal block 25 is set, makes it form tight fit.Thereby when bracing or strutting arrangement 22 is after never firing position moves to percussion when position, between bracing or strutting arrangement 22 and pivotal block 25, form tight fit, bracing or strutting arrangement 22 cannot return not firing position.
Figure 17 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.As shown in the figure, in this embodiment, stop bit device is the reverse buckling type projection 211 on elasticity pallet 223 and the nail anvil base 21 on bracing or strutting arrangement 22, the size of elasticity pallet 223 and reverse buckling type projection 211 is set, make, permission bracing or strutting arrangement 22 never firing position moves to the rear position of percussion, stops its position from pulling the trigger to move to not firing position.
In the prior art, the edge that the effect interface of propeller promotion bracing or strutting arrangement is bracing or strutting arrangement, because this edge is narrower, the active force between propeller and bracing or strutting arrangement is unstable.Figure 18 is according to the schematic diagram of the nail-anvil assembly of a specific embodiment of the present invention.As shown in the figure, in this embodiment, bracing or strutting arrangement 22 is provided with wider edge 224, makes propeller more stable for the impetus of bracing or strutting arrangement.
The present invention is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the present invention to be limited in described scope of embodiments.In addition it will be appreciated by persons skilled in the art that the present invention is not limited to above-described embodiment, can also make more kinds of variants and modifications according to instruction of the present invention, these variants and modifications all drop in the present invention's scope required for protection.Protection scope of the present invention is defined by the appended claims and equivalent scope thereof.
Claims (9)
1. a pivotable nail-anvil assembly, is characterized in that, described nail-anvil assembly comprises:
Nail anvil base, described nail anvil base comprises pivotal block;
Bracing or strutting arrangement, described bracing or strutting arrangement is arranged on described nail anvil base, can along described pivotal block never firing position move to percussion after position;
Connecting rod, described connecting rod and described pivotal block are pivotally connected pivotly;
Bias unit, described bias unit acts on mutually with described connecting rod, for generation of cause described nail anvil base and described connecting rod be pivoted relative to each other motion bias force,
Wherein, when described bracing or strutting arrangement is during at described not firing position, described bracing or strutting arrangement engages described connecting rod, resist described bias force, so that described nail anvil base does not produce relative pivoting action with described connecting rod, after described bracing or strutting arrangement moves to described percussion, when position, described bracing or strutting arrangement departs from and engages with described connecting rod, under the effect of described bias force, described nail anvil base produces relative pivoting action with described connecting rod;
Stop bit device, described stop bit device is arranged between described bracing or strutting arrangement and described nail anvil base, for prevent described bracing or strutting arrangement position from described percussion move to described in firing position not.
2. nail-anvil assembly according to claim 1, is characterized in that:
Described pivotal block is column;
Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block;
Described stop bit device is the reverse buckling type projection being arranged on described pivotal block, fit clearance between described bracing or strutting arrangement and described pivotal block and the size of described projection are arranged so that: described projection allows described bracing or strutting arrangement position from described not firing position moves to described percussion, and prevent described bracing or strutting arrangement position from pulling the trigger move to described in firing position not.
3. nail-anvil assembly according to claim 1, is characterized in that:
Described pivotal block is column;
Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block;
Described stop bit device is the flexure strip outwards opening being arranged on described pivotal block, described flexure strip open direction be described bracing or strutting arrangement from described not firing position to described percussion the direction of position, make: when when described bracing or strutting arrangement is from described not firing position to described percussion, move position, compressible described flexure strip and passing through; When described bracing or strutting arrangement, from described percussion, position is to described not when firing position moves, and the described flexure strip outwards being opened stops.
4. nail-anvil assembly according to claim 1, is characterized in that:
Described pivotal block is column;
Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block;
The external diameter major part that described stop bit device is described pivotal block, fit clearance between the described external diameter major part of described bracing or strutting arrangement and described pivotal block is set to form tight fit, make: when described bracing or strutting arrangement is from described not firing position moves to described percussion when position, between described bracing or strutting arrangement and described pivotal block, form tight fit, with stop described bracing or strutting arrangement position from described percussion get back to described in firing position not.
5. nail-anvil assembly according to claim 1, is characterized in that:
Described pivotal block is column;
Described bracing or strutting arrangement is provided with hole, to be sleeved on described pivotal block;
Described stop bit device is the reverse buckling type projection on elasticity pallet and the described nail anvil base on described bracing or strutting arrangement, the size of described elasticity pallet and described reverse buckling type projection is arranged so that: allow described bracing or strutting arrangement position from described not firing position moves to described percussion, stop described bracing or strutting arrangement position from described percussion move to described in firing position not.
6. according to the nail-anvil assembly described in aforementioned any one claim, it is characterized in that:
Described pivotal block is provided with fluting, and the sidewall of described fluting both sides is provided with pivot hole;
One end of described connecting rod is arranged in described fluting, and described end is provided with pivot hole;
Pivot, described pivot is arranged in the pivot hole of described pivotal block and described connecting rod, so that described pivotal block and described connecting rod are pivotally connected pivotly.
7. according to the nail-anvil assembly described in aforementioned any one claim, it is characterized in that:
Described bias unit is spring.
8. according to the nail-anvil assembly described in aforementioned any one claim, it is characterized in that:
Described bracing or strutting arrangement has wide edge.
9. a circular anastomosis device, described circular anastomosis device comprises according to the nail-anvil assembly described in aforementioned any one claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136650.4A CN104107078A (en) | 2013-04-19 | 2013-04-19 | Anastomat and nail anvil component thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136650.4A CN104107078A (en) | 2013-04-19 | 2013-04-19 | Anastomat and nail anvil component thereof |
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| Publication Number | Publication Date |
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| CN104107078A true CN104107078A (en) | 2014-10-22 |
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| CN201310136650.4A Pending CN104107078A (en) | 2013-04-19 | 2013-04-19 | Anastomat and nail anvil component thereof |
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| CN (1) | CN104107078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3673835A3 (en) * | 2018-12-31 | 2020-09-09 | Ethicon LLC | Anvil for circular surgical stapler and associated method of manufacture with mim |
| US11992218B2 (en) | 2021-10-18 | 2024-05-28 | Cilag Gmbh International | Metal injection molded anvil for circular surgical stapler |
Citations (7)
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| CN1933785A (en) * | 2004-03-19 | 2007-03-21 | Tyco医疗健康集团 | Anvil assembly with improved cut ring |
| CN1907239A (en) * | 2005-08-04 | 2007-02-07 | 苏州天臣国际医疗科技有限公司 | Turnover nail-anvil assembly |
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| US20100160927A1 (en) * | 2006-08-10 | 2010-06-24 | Yuri Urin | Device for Preparing Tissue for Anastomosis |
| CN203195731U (en) * | 2013-04-19 | 2013-09-18 | 瑞奇外科器械(中国)有限公司 | Anastomat and nail-anvil assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3673835A3 (en) * | 2018-12-31 | 2020-09-09 | Ethicon LLC | Anvil for circular surgical stapler and associated method of manufacture with mim |
| US11291450B2 (en) | 2018-12-31 | 2022-04-05 | Cilag Gmbh International | Anvil for circular surgical stapler and associated method of manufacture with MIM |
| US11992218B2 (en) | 2021-10-18 | 2024-05-28 | Cilag Gmbh International | Metal injection molded anvil for circular surgical stapler |
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