CN114451944A - Surgical instrument and nail bin assembly thereof - Google Patents
Surgical instrument and nail bin assembly thereof Download PDFInfo
- Publication number
- CN114451944A CN114451944A CN202210122724.8A CN202210122724A CN114451944A CN 114451944 A CN114451944 A CN 114451944A CN 202210122724 A CN202210122724 A CN 202210122724A CN 114451944 A CN114451944 A CN 114451944A
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- Prior art keywords
- staple cartridge
- nail
- nail bin
- cartridge assembly
- clamping plate
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- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims 8
- 239000013013 elastic material Substances 0.000 claims 1
- 238000002054 transplantation Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 210000001519 tissue Anatomy 0.000 description 70
- 239000012636 effector Substances 0.000 description 22
- 230000003139 buffering effect Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 238000010304 firing Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000000451 tissue damage Effects 0.000 description 3
- 231100000827 tissue damage Toxicity 0.000 description 3
- 230000003872 anastomosis Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
-
- 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
-
- 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
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
-
- 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
- A61B2017/07285—Stapler heads characterised by its cutter
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a surgical instrument and a nail bin assembly thereof, and belongs to the field of medical instruments. The cartridge assembly comprises: the nail bin is internally provided with a chute suitable for the movement of the cutting knife, and the chute extends from the near end to the far end of the nail bin and divides the nail bin into a first area and a second area; the first area of the nail bin is provided with a plurality of nail outlet holes, the nail outlet holes are used for accommodating nail drivers, and the second area of the nail bin is provided with an opening; the clamping plate is movably connected to the second area of the nail bin, and one side of the clamping plate, which is far away from the nail bin, is used for being matched with tissues; the pushing part comprises a first pushing part and a second pushing part, when the pushing part moves from the near end to the far end of the nail bin, the first pushing part pushes the suturing nails in the nail driver to move to tissues outside the nail bin along the nail outlet holes, and the second pushing part pushes the clamping plate to clamp the tissues. The invention solves the problem of the waste of the transplanted tissue when the existing surgical anastomat is used for the transplantation operation.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a surgical instrument and a nail bin assembly thereof.
Background
The surgical stapler is used as a surgical instrument for cutting and suturing tissues, and the main working principle of the surgical stapler is to use titanium nails to perform separation and anastomosis on the tissues, so that bleeding from soft tissues can be reduced or eliminated in the process of cutting the tissues. A surgical stapler includes a handle assembly, a transmission assembly, and an end effector. Wherein, end effector includes the nail storehouse subassembly, supports nail seat and cutting knife, is provided with the spout that can make the cutting knife pass through on the nail storehouse in the nail storehouse subassembly, is provided with trigger, button or the button that pushes away that is used for controlling the cutting knife on the handle assembly. When the tissue clamping device works, the tissue is placed between the nail bin assembly and the nail abutting seat, the nail abutting seat of the end effector pivots towards the nail bin assembly to clamp the tissue by pulling the trigger, and after the tissue is clamped, the pushing and twisting control cutting knife is triggered to move along the sliding groove of the nail abutting seat to cut off the tissue; meanwhile, the suturing nail driver implants the titanium nails positioned on the two sides of the nail bin into the tissue to realize tissue suturing.
At present, nail bins of the surgical anastomat are of symmetrical structures, a cutting knife is arranged in the middle, and two rows or three rows of titanium nails are distributed on the left and right. This kind of surgery anastomat is in transplanting the operation, for example liver transplantation formula, when taking tissue from the human body of healthy donation liver through the anastomat, because the cutting knife both sides of nail storehouse all set up the titanium nail, make the tissue side of waiting to implant also have the sewing nail, like this, need cut the part that the tissue had the sewing nail before this healthy tissue is implanted and cut off, cause the waste of limited resource.
Disclosure of Invention
The invention aims to solve the technical problem of waste of transplanted tissues when the existing surgical anastomat is used for transplantation operation.
In order to solve the technical problems, the invention provides the following technical scheme:
a staple cartridge assembly of a surgical instrument, comprising: the nail bin is internally provided with a chute suitable for the movement of the cutting knife, and the chute extends from the near end to the far end of the nail bin and divides the nail bin into a first area and a second area; the first area of the nail bin is provided with a plurality of nail outlet holes, the nail outlet holes are used for accommodating nail drivers, and the second area of the nail bin is provided with an opening; a clamp plate movably connected to the second region of the staple cartridge, a side of the clamp plate remote from the staple cartridge for engaging tissue; and the pushing part comprises a first pushing part positioned in the first area of the nail bin and a second pushing part positioned in the second area of the nail bin, when the pushing part moves from the near end to the far end of the nail bin, the first pushing part pushes the suturing nails in the nail driver to move into the tissue outside the nail bin along the nail outlet holes, and the second pushing part pushes the clamping plate to clamp the tissue.
In some embodiments of the present invention, a buffer member is disposed between the clamping plate and the second pushing portion, and the second pushing portion acts on the clamping plate through the buffer member when moving from the proximal end to the distal end of the staple cartridge.
In some embodiments of the present invention, the buffer portions of the buffer member correspond to the positions of the staple outlet holes of the staple cartridge one-to-one, so that the first pushing portion pushes the staple driver while the second pushing portion pushes the buffer portions.
In some embodiments of the present invention, the buffering member includes a spring plate extending along a length direction of the clamping plate, the spring plate includes a plurality of buffering portions and a connecting portion, which are sequentially arranged, wherein the connecting portion abuts against the clamping plate, and a buffering gap is formed between the buffering portions and the clamping plate.
In some embodiments of the present invention, the buffer portion is formed as an arc-shaped piece, a wedge-shaped piece, or a trapezoidal piece protruding toward the cartridge side.
In some embodiments of the invention, the cushioning member comprises a plurality of cushioning pads attached to the cleat, the cushioning pads being made of an elastomeric material.
In some embodiments of the present invention, the bumper is formed as a hemispherical protrusion protruding toward the cartridge side.
In some embodiments of the invention, the cushioning member is fixedly attached to a side of the clamp plate proximate the staple cartridge.
In some embodiments of the present invention, the bumper member is attached to the second region of the staple cartridge.
In some embodiments of the present invention, the clamping plate has at least one limiting rib on a side surface close to the nail bin, the limiting rib extends along a length direction of the clamping plate, the limiting rib is inserted into the opening in the second region of the nail bin, and a limiting structure limits a maximum moving position of the clamping plate relative to the nail bin.
In some embodiments of the invention, the limit structure comprises a buckle protrusion arranged on the limit rib and a limit step surface arranged on the lower side of the opening of the nail bin; when the clamping plate moves towards the direction far away from the nail bin, the limiting step surface blocks the buckle protrusion to move.
In some embodiments of the invention, the cushioning member is attached to the spacing rib.
In some embodiments of the invention, the plate surface of the side of the clamping plate far away from the nail box is lower than the surface of the side of the first area of the nail box far away from the nail box.
In some embodiments of the present invention, a plurality of protrusions are disposed on a plate surface of the clamping plate on a side away from the nail bin.
In some embodiments of the present invention, the pushing portion includes a pushing slider, and the pushing slider includes a connecting plate and two wedge-shaped blocks disposed on the connecting plate at intervals, and the first pushing portion and the second pushing portion are respectively formed by the two wedge-shaped blocks.
In some embodiments of the present invention, the pushing slider is provided with a stopper between the two wedge-shaped blocks, the cutting knife is pushed against a proximal end of the stopper, and when the cutting knife slides from the proximal end to the distal end of the sliding groove, the pushing slider is pushed against the stopper to move synchronously with the cutting knife.
In some embodiments of the present invention, the cartridge further comprises a cartridge base, wherein the cartridge is detachably connected to the cartridge base.
In some embodiments of the invention, the splint is an adaptively tissue-compressible, resilient sheet material.
The invention also provides a surgical instrument comprising: the nail cartridge assembly comprises a nail cartridge assembly body and a nail abutting seat, wherein the nail abutting seat can pivot relative to the nail cartridge assembly body or the nail cartridge assembly body can pivot relative to the nail abutting seat.
In some embodiments of the present invention, the nail pushing seat includes a nail pushing shell, and a first seat body and a second seat body located in the nail pushing shell, the first seat body is matched with the first region of the nail bin, the second seat body is matched with the second region of the nail bin, and a surface of the second seat body is coated with silica gel.
In some embodiments of the present invention, the exposed portion of the staple cartridge assembly and/or the exposed portion of the staple abutting seat are provided with a mark for indicating the area where the staples are located.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
in the surgical instrument and the nail bin assembly thereof provided by the invention, the movable clamping plate is arranged in one side region of the nail bin assembly, the side of the clamping plate is not provided with the suturing nails, when the pushing part moves from the near end to the far end of the nail bin, the first pushing part positioned in the first region of the nail bin pushes the suturing nails in the nail driver to move into tissues outside the nail bin along the nail outlet holes, and the second pushing part positioned in the second region of the nail bin pushes the clamping plate to clamp the tissues. So that one side of the cut tissue is sutured and closed, the other side of the cut tissue is not sutured, the tissue which is not sutured can be directly transplanted, and the problem that the tissue is wasted due to the fact that the titanium nail side is cut when the tissue which is sutured on the two sides is transplanted is solved.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural view of one embodiment of a surgical instrument of the present invention;
FIG. 2 is a schematic view of one embodiment of an end effector of the surgical instrument of the present invention;
FIG. 3 is an exploded view of one embodiment of an end effector of the surgical instrument of the present invention;
FIG. 4 is a schematic structural view of one embodiment of a staple cartridge of the surgical instrument of the present invention;
FIG. 5 is a schematic view of one embodiment of a pusher portion of the surgical instrument of the present invention;
FIG. 6 is a perspective view and a front view of one embodiment of a splint of the surgical device of the present invention;
FIG. 7 is a rear view of one embodiment of a staple cartridge of the surgical instrument of the present invention;
FIG. 8 is an assembly view of one embodiment of a clamping plate and cushioning member of the surgical instrument of the present invention;
FIG. 9 is an enlarged partial view of a cushioning member of the surgical instrument of the present invention;
FIG. 10 is a schematic view of one embodiment of a staple holder of the surgical instrument of the present invention;
FIG. 11 is a schematic view of an embodiment of a staple cartridge of the surgical instrument of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In various embodiments of the present invention, "distal end/side" refers to the end of the surgical instrument that is distal from the operator when the surgical instrument is operated, and "proximal end" refers to the end/side of the surgical instrument that is proximal to the operator when the surgical instrument is operated.
FIG. 1 is a schematic block diagram of an embodiment of a surgical instrument 100 provided by the present invention. The illustrated embodiment is an endoscopic instrument, and in general, the embodiments of the surgical instrument 100 described herein are endoscopic surgical cutting and stapling instruments. However, it should be noted that the surgical instrument may also be a non-endoscopic surgical cutting stapling instrument, such as an open surgical instrument for open surgery.
In particular, fig. 1 shows a surgical instrument 100 including a handle assembly 10, a transmission assembly 20, and an end effector 30. Wherein handle assembly 10 is adapted to enable an operator to manipulate the surgical instrument, handle assembly 10 may control the movement of the end effector via transmission assembly 20 to perform a surgical procedure, such as clamping/closing, stapling/stapling, cutting, etc., tissue. The handle assembly 10 includes a handle body 12 which may be capable of being held by a user in a conventional manner. In one particular embodiment, the surgical instrument operates end effector closure and firing by a trigger 11; in one embodiment, the surgical instrument can also be used to manipulate the end effector to close and fire, such as by pushing buttons, etc. disposed on the handle, to cause the end effector to perform cutting and stapling operations; in one particular embodiment, the surgical instrument can also be used to manipulate the jaws of the end effector open to release tissue by way of a trigger, push-button, or the like disposed on the handle. The transmission assembly 20 is in the form of an elongated tube defining a longitudinal axis C, the transmission assembly 20 transmitting the driving force of the handle to the distal end of the surgical instrument.
Referring now to fig. 2 and 3, one embodiment of an end effector 30 of the present invention is shown. The end effector 30 includes a cartridge module 31 and an anvil 32 coupled to a distal end of the delivery assembly 20, and the cartridge module 31 and the anvil 32 are movable toward each other in a closing motion to form jaws for grasping tissue. In one embodiment, the anvil 32 of the end effector 30 can be pivoted toward the cartridge assembly 31 until the jaws of the end effector 30 are closed to grasp tissue; the anvil 32 pivots away from the cartridge module 31 until the jaws of the end effector 30 are opened to release the tissue. In yet another embodiment, the cartridge assembly 31 of the end effector 30 can be pivoted against the staple holder 32 until the jaws of the end effector 30 are closed to grasp tissue.
Referring to fig. 3 and 4, which illustrate one embodiment of the cartridge assembly 31 of the present invention, the cartridge assembly 31 includes a cartridge 312, and the cartridge 312 can be driven by the conveying assembly 20 to operate. The nail bin assembly 31 further comprises a nail bin base 311, the nail bin base 311 is connected with the transmission assembly 20, and the nail bin 312 is used as a disposable component and is detachably connected to the inside of the nail bin base 311. In other alternative embodiments, the magazine base 311 of the magazine assembly 31 is fixedly connected to the magazine 312 or integrally formed with the magazine, and is detachably connected to the transmission assembly 20 as a component.
With continued reference to fig. 3, the magazine base 311 is formed as an open shell structure with a U-shaped or semicircular cross section, and is connected to the distal end of the transmission component 20, and the magazine 312 is inserted into the magazine base 311 by being clamped or the like. The staple cartridge 312 is formed as an elongated holder body extending along the longitudinal axis C of the surgical instrument, a side surface of the staple cartridge base 311 is away from the staple cartridge base for engaging with tissue, a sliding groove 312a extending from the proximal end to the distal end of the staple cartridge 312 is arranged on a contact surface of the staple cartridge 312 for engaging with the tissue, the sliding groove 312a is suitable for the cutting knife 33 to pass through, and the tissue clamped between the contact surface and the staple abutting seat 32 is cut along the proximal end to the distal end of the staple cartridge 312. In an alternative embodiment, said slide groove 312a is located at an intermediate position on the upper surface of said staple cartridge 312; staple cartridge 312 is divided by chute 312a into a first region a and a second region b. The first area a of the nail bin 312 is provided with a plurality of nail outlet holes 312b, the nail outlet holes 312b are arranged along the longitudinal axis C direction of the nail bin 312, and one row, two rows, three rows or more can be arranged according to different operation conditions; staple exit holes 312b may be configured to receive staples 314 and staple drivers 313, with staple drivers 313 mounting staples 314 toward staple exit holes 312 b; staple drivers 313 can implant staples 314 into tissue to effect stapling. Second region b of staple cartridge 312 has openings 312c where a stapling mechanism (e.g., staples or sutures, etc.) is not located at openings 312 c.
The staple cartridge assembly 31 further comprises a pushing portion 316 movable along the proximal end to the distal end of the staple cartridge 312 under the action of a driving mechanism, and comprises a first pushing portion 316 positioned at a first area a of the staple cartridge 312 and a second pushing portion 316 positioned at a second area b of the staple cartridge 312. When a user triggers a firing trigger, button or push button on handle assembly 10, pusher sections 316 move proximally to distally along staple cartridge 312, a first pusher section 316 pushes staples 314 within staple drivers 313 along staple exit holes 312b into tissue outside staple cartridge 312, and a second pusher section 316 pushes staples 315 to clamp the tissue. So that one side of the cut tissue is sutured and closed, and the other side of the cut tissue is not sutured, so that the tissue which is not sutured can be directly transplanted, and the problem that the tissue is wasted due to the fact that the titanium nail side is cut when the tissue sutured on the two sides is transplanted is solved.
When the surgical instrument is used for performing a surgical operation, tissue is placed between the nail cartridge assembly 31 and the nail abutting seat 32, and when the trigger 11 of the handle assembly 10 is pulled, the nail abutting seat 32 pivots towards the nail cartridge assembly 31 or the nail cartridge assembly 31 pivots towards the nail abutting seat 32 until the jaws of the end effector 30 are closed to clamp the tissue; triggering a trigger, a firing button or a push button on the handle assembly 10 to move a firing member (including the cutting knife 33 and the pushing portion 316) in the cartridge assembly 31 from the proximal end to the distal end of the end effector to cut tissue and suture tissue on one side; finally, an open button on handle assembly 10 is activated, and anvil 32 pivots away from cartridge assembly 31 or cartridge assembly 31 pivots away from anvil 32, opening the jaws of end effector 30 and releasing the tissue.
Referring to fig. 3, the staple cartridge assembly 31 further includes a pushing slide rail 318, the pushing portion 316 slides along the pushing slide rail 318, the pushing portion 316 is a pushing slide block, as shown in fig. 5, the pushing slide block includes a connecting plate 3161, the connecting plate 3161 is in sliding fit with the pushing slide rail 318, the pushing slide block further includes two wedge-shaped blocks disposed on the connecting plate 3161 at intervals, and the two wedge-shaped blocks form the first pushing portion 3163 and the second pushing portion 3162 respectively. The pushing slider is provided with a stop block 3164 between the two wedge-shaped blocks, the cutting knife 33 pushes against the near end of the stop block 3164, and when the cutting knife 33 slides from the near end to the far end of the chute 312a, the pushing slider pushes against the stop block 3164 to enable the pushing slider and the cutting knife 33 to synchronously move.
Referring to FIG. 7, the clamp plate 315 and the staple cartridge 312 are movably mounted and fixed by the following specific structure. The clamping plate 315 is provided with at least one limiting rib 315a on one side surface close to the nail bin 312, the limiting rib 315a extends along the length direction of the clamping plate 315, the opening 312c of the nail bin 312 in the second area b is formed into a strip-shaped opening 312c, the width of the opening is slightly larger than that of the limiting rib 315a, the two ends of the limiting rib 315a are provided with buckle protrusions 315b, the width of the limiting rib 315a at the position of the buckle protrusions 315b is slightly larger than that of the strip-shaped opening 312c, during installation, the limiting rib 315a of the clamping plate 315 is integrally inserted into the inner side of the opening 312c by deforming part of the strip-shaped opening 312c, so that the clamping plate 315 and the nail bin 312 are fixed.
In order to define the maximum protruding position of the clamping plate 315 relative to the staple cartridge 312, in an alternative embodiment, the staple cartridge assembly 31 further includes a limiting structure including the snap protrusions 315b disposed on the limiting ribs 315a and a limiting step surface 312d disposed on the lower side of the opening 312c of the staple cartridge 312, in an initial state, the limiting step surface 312d and the snap protrusions 315b have a set gap, when the clamping plate 315 moves away from the staple cartridge 312, the limiting step surface 312d can block the snap protrusions 315b to limit the clamping plate 315 to move further to the tissue side, so as to protect the tissue from being damaged by the clamping plate 315, and at the same time, prevent the clamping plate 315 from falling out of the staple cartridge 312.
In order to avoid tissue damage caused by excessive compression of the clamping plate 315 on the tissue during movement of the pushing portion 316, in an alternative embodiment, a buffer member 317 is disposed between the clamping plate 315 and the second pushing portion 3162, and the force applied to the tissue by the clamping plate 315 is stabilized by the buffer member 317 acting on the clamping plate 315 as the second pushing portion 3162 moves from the proximal end to the distal end of the staple cartridge 312.
Since the pushing part 316 moves, the first pushing part 3163 acts on the staple driver 313 and the second pushing part 3162 acts on the clamping plate 315 through the buffering member 317, in order to avoid the pushing part 316 from tilting due to uneven force, in an alternative embodiment, the buffering parts 317a of the buffering member 317 correspond to the staple outlet holes 312b of the staple cartridge 312 in a one-to-one manner, so that the first pushing part 3163 pushes the staple driver 313 and the second pushing part 3162 pushes the buffering parts 317a, and further, the reaction force acting on the first pushing part 3163 and the second pushing part 3162 is substantially consistent, thereby avoiding the problem that the stitching effect of the staple 314 is poor due to the tilting of the pushing part 316. More specifically, in order to further make the stress conditions of the first pushing part 3163 and the second pushing part 3162 substantially consistent, the first pushing part 3163 and the second pushing part 3162 are formed into a wedge-shaped block with substantially consistent shapes, and the second pushing part 3162 is smaller than the first pushing part 3163 as a whole, that is, the top of the second pushing part 3162 is lower than the top of the first pushing part 3163. The cushioning portion 317a of the cushioning member 317 has an inclined portion along its length that can engage with an inclined surface of a wedge, the inclined portion can be a straight surface or an arcuate surface, and the maximum deformation position at which the inclined portion engages with the second pushing portion 3162 coincides with the maximum displacement position at which the first pushing portion 3163 pushes the staple driver 313.
A specific structure of the cushioning member 317 is specifically shown with reference to fig. 9. The buffering member 317 comprises an elastic sheet extending along the length direction of the clamping plate 315, the elastic sheet is provided with a buffering portion 317a and a connecting portion 317b which are sequentially arranged along the length direction, the connecting portion 317b is a flat sheet, the extending surfaces of the adjacent connecting portions 317b are on the same plane, and the buffering portion 317a is an arc sheet, a wedge sheet or a trapezoid sheet protruding towards the side far away from the clamping plate 315. The inclined surfaces of the wedge-shaped sheets and the trapezoidal sheets are matched with the inclined surfaces of the wedge blocks.
In another alternative embodiment, the cushioning member 317 includes a plurality of cushioning pads attached to the cleat 315, the cushioning pads being made of a resilient material, such as resilient rubber. Specifically, the positions of the plurality of buffer blocks correspond to the positions of the nail outlet holes 312b in the first region a of the nail cartridge 312, and the buffer blocks can be fixed on the inner side surface of the clamping plate 315 by bonding or other fixing connection methods. More specifically, the buffer block is formed as a semispherical projection or other arc-shaped or wedge-shaped projection protruding toward the staple cartridge 312 side, so that the inclined surface of the second pushing part 3162 moves more smoothly when slidably engaging therewith.
The installation and connection of the cushioning member 317 is not exclusive, and specifically, in one embodiment, the cushioning member 317 is directly connected to the clamping plate 315; as shown in fig. 8, the buffer member 317 is connected to the stopper rib 315 a. More specifically, the buffering member 317 is a spring plate, the spring plate is provided with a jack 317c on the connecting portion 317b, the limiting rib 315a is correspondingly provided with a plurality of connecting posts 315c, and the spring plate is tightly matched with the connecting posts 315c through the jack 317c to realize connection and fixation with the clamp plate 315.
In another embodiment, cushioning member 317 is fixedly attached to staple cartridge 312; the buffering member 317 is formed in the form of the above-mentioned elastic piece, two ends of the elastic piece are fixed on the shells of the proximal end and the distal end of the nail bin 312, a main body portion of the elastic piece is located at the opening 312c of the second region b of the nail bin 312, the connecting portion 317b of the elastic piece abuts against the clamp plate 315, and the second pushing portion 3162 acts on the clamp plate 315 through the elastic piece.
To further reduce tissue damage during cutting by the surgical instrument, in an alternative embodiment, the clamping plate 315 is a resilient plate that is self-adaptive to tissue compression, for example, the clamping plate 315 may be a resilient plate made of a medium-durometer silicone material; alternatively, the clamping plate 315 may be a plate with a silicone layer coated on the surface. As shown in fig. 6, the splint 315 has a plurality of protrusions 315d on a side plate surface that is engaged with the tissue, and the protrusions 315d are preferably arc-shaped protrusions, so as to increase friction with the tissue and reduce slippage of the tissue relative to the end effector 30 when cutting the tissue; on the other hand, the smooth surface of the arc-shaped protrusion causes less damage to the tissue when the arc-shaped protrusion is in contact with the tissue.
In an alternative embodiment, the plate surface of the side of the clamping plate 315 facing away from the staple cartridge 312 is lower than the upper surface of the first region a of the staple cartridge 312, preferably, the height difference A is 0-3mm, preferably, the height difference A is 0.5-1.5 mm. When the non-sutured side clamps and squeezes the tissues during the tissue cutting and anastomosis operation, the clamping force is lower than that of the suturing nail side, so that the tissues in the second area b are slightly squeezed, the tissues are slightly damaged or not damaged, and the tissues to be transplanted are fully protected.
As shown in fig. 10, the staple abutting seat 32 includes a staple abutting shell 321, and a first seat body 322 and a second seat body 323 located in the staple abutting shell 321, the first seat body 322 is matched with the first region a of the staple cartridge 312, the second seat body 323 is matched with the second region b of the staple cartridge 312, wherein the surface of the first seat body 322 is provided with a plurality of staple bracts 322a, the positions of the staple bracts 322a and the staple discharging holes 312b on the staple cartridge 312 are in one-to-one correspondence, and the staples 314 in the staple discharging holes 312b abut against the staple bracts 322a when the tissues are anastomosed. The surface of the second seat 323 is covered with a silica gel layer 323a, which can sufficiently protect the tissue to avoid tissue damage due to the elasticity of the silica gel.
In order to facilitate the doctor to determine which specific part of the cartridge assembly is the stitching part provided with the stitching 314 and which part is the clamping part not provided with the stitching 314, the exposed part of the cartridge assembly 31 and/or the staple abutting seat 32 is provided with a mark for indicating the area where the stitching 314 is located.
In an alternative embodiment, the exposed side of the nail abutting seat 32 is provided with a suture mark or a non-suture mark, as shown in fig. 11, the exposed portion of the first seat body 322 of the nail abutting seat 32 is provided with a suture mark 324, so that a doctor can determine which portion of tissue is sutured, and misuse is prevented. Specifically, the staple identifier 324 may be the initial shape of the staple 314, the shape of the staple formation, a graphic/image of the tissue staple, etc. Alternatively, the exposed portion of the second seat 323 of the nail abutting seat 32 is provided with a mark for no suture, so that the doctor can determine that the portion of the tissue is not sutured, and misuse is prevented. Specifically, the unstitched logo may be various colors, a warning logo, a graphic/graphic of tissue unstitched, etc.
In another alternative embodiment, the exposed portion of the cartridge module 31 is provided with a suture mark and/or a non-suture mark. Specifically, the bevel portion of the nail cartridge 312 exposed outside at the farthest end and/or the side of the nail cartridge base 311 away from the nail abutting seat 32 are/is provided with the suture mark and/or the non-suture mark.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (21)
1. A staple cartridge assembly of a surgical instrument, comprising:
the nail bin is internally provided with a chute suitable for the movement of the cutting knife, and the chute extends from the near end to the far end of the nail bin and divides the nail bin into a first area and a second area; the first area of the nail bin is provided with a plurality of nail outlet holes, the nail outlet holes are used for accommodating nail drivers, and the second area of the nail bin is provided with an opening;
a clamp plate movably connected to the second region of the staple cartridge, a side of the clamp plate remote from the staple cartridge for engaging tissue;
and the pushing part comprises a first pushing part positioned in the first area of the nail bin and a second pushing part positioned in the second area of the nail bin, when the pushing part moves from the near end to the far end of the nail bin, the first pushing part pushes the suturing nails in the nail driver to move into the tissue outside the nail bin along the nail outlet holes, and the second pushing part pushes the clamping plate to clamp the tissue.
2. The staple cartridge assembly of claim 1, wherein a bumper member is disposed between said clamp plate and said second pushing portion, said second pushing portion acting on said clamp plate through said bumper member as said second pushing portion moves from said proximal end to said distal end of said staple cartridge.
3. The staple cartridge assembly of claim 2, wherein the bumper portions of the bumper member correspond one-to-one with the positions of the staple exit holes of the staple cartridge such that the first pushing portion pushes the staple driver while the second pushing portion pushes the bumper portions.
4. The staple cartridge assembly of claim 3, wherein the buffer member comprises a spring extending along a length of the clamping plate, the spring comprising a plurality of buffer portions and a connecting portion, the buffer portions and the clamping plate being sequentially arranged, wherein the connecting portion abuts against the clamping plate, and a buffer gap is formed between the buffer portions and the clamping plate.
5. The staple cartridge assembly of claim 4, wherein said bumper is shaped as an arcuate, wedge-shaped, or trapezoidal piece projecting toward said staple cartridge side.
6. The staple cartridge assembly of claim 3, wherein said dampening member comprises a plurality of dampening nubs attached to said clamping plate, said dampening nubs being made of an elastic material.
7. The staple cartridge assembly of claim 6, wherein said bumper is shaped as a hemispherical protrusion protruding toward said staple cartridge side.
8. The staple cartridge assembly of claim 2, wherein said bumper member is fixedly attached to a side of said clamp plate proximate said staple cartridge.
9. The staple cartridge assembly of claim 2, wherein said bumper member is attached to said second region of said staple cartridge.
10. The staple cartridge assembly of claim 2, wherein said clamping plate has at least one retention rib on a side surface proximate to said staple cartridge, said retention rib extending along a length of said clamping plate, said retention rib being received in said opening in said second region of said staple cartridge and limiting a maximum travel position of said clamping plate relative to said staple cartridge by a retention feature.
11. The staple cartridge assembly of claim 10, wherein said retention feature comprises a snap projection disposed on said retention rib and a retention step surface disposed on an underside of said opening of said staple cartridge; when the clamping plate moves towards the direction far away from the nail bin, the limiting step surface blocks the buckle protrusion to move.
12. The staple cartridge assembly of claim 10, wherein said dampening member is attached to said retention rib.
13. The staple cartridge assembly of claim 1, wherein a plate surface of a side of said clamp plate facing away from said staple cartridge is lower than a surface of a side of said first region of said staple cartridge facing away from said staple cartridge.
14. The staple cartridge assembly of claim 1, wherein said plate on a side of said clamp plate remote from said staple cartridge comprises a plurality of protrusions.
15. The staple cartridge assembly of claim 1, wherein said pushing portion comprises a pusher shoe, said pusher shoe comprising a connecting plate and two wedge blocks spaced apart from said connecting plate to form said first pushing portion and said second pushing portion, respectively.
16. The staple cartridge assembly of claim 1, wherein said push slider comprises a stop between two wedge-shaped blocks, said cutting knife is pushed against a proximal end of said stop, and said push slider and said cutting knife move synchronously by pushing against said stop as said cutting knife slides along said slot from said proximal end to said distal end.
17. The staple cartridge assembly of claim 1, further comprising a staple cartridge base, wherein said staple cartridge is removably attached to said staple cartridge base.
18. The staple cartridge assembly of claim 1, wherein said clamp plate is a resilient, tissue-compressible sheet material.
19. A surgical instrument, comprising:
the staple cartridge assembly of any one of claims 1-18, and an anvil, said anvil being pivotable relative to said staple cartridge assembly or said staple cartridge assembly being pivotable relative to said anvil.
20. The surgical instrument of claim 19, wherein the staple abutting block comprises a staple abutting shell and a first block body and a second block body located in the staple abutting shell, the first block body is matched with the first region of the staple cartridge, the second block body is matched with the second region of the staple cartridge, and a surface of the second block body is covered with silicone.
21. The surgical instrument of claim 19, wherein the exposed portion of the cartridge assembly and/or the anvil is provided with a marking for indicating the area where the staples are located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210122724.8A CN114451944B (en) | 2022-02-09 | 2022-02-09 | Surgical instrument and nail bin assembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210122724.8A CN114451944B (en) | 2022-02-09 | 2022-02-09 | Surgical instrument and nail bin assembly thereof |
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| CN114451944A true CN114451944A (en) | 2022-05-10 |
| CN114451944B CN114451944B (en) | 2024-02-23 |
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Effective date of registration: 20220922 Address after: No. 120, Xinxing Road, West District, Binhai New Area Development Zone, Tianjin 300462 Applicant after: REACH SURGICAL Inc. Applicant after: WEST CHINA HOSPITAL OF SICHUAN University Address before: No. 120, Xinxing Road, West District, Binhai New Area Development Zone, Tianjin 300462 Applicant before: REACH SURGICAL Inc. |
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