CN117379127B - Anvil assembly for tubular anastomat and tubular anastomat - Google Patents
Anvil assembly for tubular anastomat and tubular anastomat Download PDFInfo
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- CN117379127B CN117379127B CN202311320707.6A CN202311320707A CN117379127B CN 117379127 B CN117379127 B CN 117379127B CN 202311320707 A CN202311320707 A CN 202311320707A CN 117379127 B CN117379127 B CN 117379127B
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- 238000003825 pressing Methods 0.000 claims description 4
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- 238000009434 installation Methods 0.000 description 12
- 210000001519 tissue Anatomy 0.000 description 10
- 230000003872 anastomosis Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000012620 biological material Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000004876 tela submucosa Anatomy 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 210000000936 intestine Anatomy 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
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- 230000008439 repair process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000003516 pericardium Anatomy 0.000 description 1
- 210000004303 peritoneum Anatomy 0.000 description 1
- 229920001606 poly(lactic acid-co-glycolic acid) Polymers 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
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- 210000000813 small intestine Anatomy 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003932 urinary bladder Anatomy 0.000 description 1
- 210000001835 viscera Anatomy 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
- 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
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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
- A61B2017/07257—Stapler heads characterised by its anvil
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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
Landscapes
- 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
本公开提供一种用于管型吻合器的钉砧组件以及管型吻合器，所述钉砧组件包括钉砧帽、钉砧以及第一补片。所述钉砧远离所述钉砧帽的一侧具有钉砧端面；所述第一补片包括第一本体部和第一连接部，所述第一本体部覆盖所述钉砧端面，所述第一连接部的至少部分夹持于所述钉砧帽与所述钉砧之间。第一补片夹持于钉砧帽与钉砧之间，可以有效防止所述第一补片由所述管型吻合器上脱出，同时可以避免私人更换补片可能造成的污染，以保证医疗器械的使用安全和卫生安全。
The present disclosure provides a nail anvil assembly for a tubular stapler and a tubular stapler, wherein the nail anvil assembly comprises an anvil cap, an anvil and a first patch. The anvil has an anvil end face on the side away from the anvil cap; the first patch comprises a first body portion and a first connecting portion, the first body portion covers the anvil end face, and at least a portion of the first connecting portion is clamped between the anvil cap and the anvil. The first patch is clamped between the anvil cap and the anvil, which can effectively prevent the first patch from falling off the tubular stapler, and can also avoid the contamination that may be caused by private patch replacement, so as to ensure the use safety and hygienic safety of the medical device.
Description
Technical Field
The disclosure relates to the technical field of medical instruments, in particular to a nail anvil assembly for a tubular anastomat and the tubular anastomat.
Background
The application of the anastomat greatly promotes the development of modern surgery and minimally invasive surgery, and has the significance of milestones. The anastomat comprises a linear anastomat and a tubular anastomat, and can staple tissues through the anastomat while cutting, and is widely used for cutting, suturing or anastomosis of viscera tissues such as intestines, stomach, lung, pancreas and the like. The cutting anastomosis of the tubular anastomat comprises two parts, wherein one part is a nail anvil assembly with an umbrella-shaped or mushroom-shaped shape, and the other part is a nail bin assembly of the anastomat. The cartridge assembly includes a cartridge, and is further provided with an annular knife for cutting tissue. The tubular anastomat can form annular anastomotic threads on tissues and cut the tissues by using an annular knife to form circular anastomoses. The device can be used for conveniently performing end-to-end, end-to-side and side-to-side anastomosis of a lumen organ, and is commonly used for esophagus, intestine or gastrointestinal operation. The risk of such surgical procedures is greatly reduced and the surgical time is shortened compared to prior surgical knife/shears, and thus has very wide application in surgery. However, the mere incorporation of the stiff staples does not completely avoid leakage and bleeding of the tissue at the stoma. This is because the staples are rigid structures that do not match the flexibility of the soft tissue completely, resulting in leakage and bleeding from the staple holes. In order to solve the problems, the anastomat can be used for cutting and closing the wound surface by combining the anastomat reinforcing repair sheet with the anastomat, and simultaneously, the reinforcing repair sheet is fixed on the wound surface to close the nail holes of the anastomat, so that the strength of the wound surface is improved, and the leakage and the bleeding of the wound surface are avoided.
Disclosure of Invention
An object of the present disclosure is to provide an anvil assembly for a tubular stapler and a tubular stapler, aiming at the technical problems in the related art. The specific scheme is as follows:
In a first aspect, embodiments of the present disclosure provide an anvil assembly for a tubular stapler, comprising an anvil cap, an anvil having an anvil end surface on a side of the anvil distal from the anvil cap, and a first patch comprising a first body portion covering the anvil end surface and a first connecting portion at least partially clamped between the anvil cap and the anvil.
In some embodiments, the first connection portion is a saw tooth structure, and at least a portion of the first connection portion is clamped between the anvil cap and the anvil.
In some embodiments, the anvil assembly for a tubular stapler further comprises a knife-washer disposed on a side of the first body portion of the first patch facing the anvil, wherein an outer aperture of the knife-washer is larger than an inner aperture of the first patch for preventing the knife-washer from backing out of the inner aperture of the first patch.
In some embodiments, the anvil assembly for a tubular stapler further comprises a central shaft assembly that is snapped into engagement with the anvil cap such that the anvil cap has a compressive tendency toward the anvil to grip the first patch.
In some embodiments, the nail anvil cap further comprises a first limiting piece arranged at the nail anvil cap part and extending towards the nail anvil, a first protruding portion is arranged at one end of the first limiting piece, which is far away from the nail anvil cap, and a second limiting piece arranged inside the nail anvil cap and extending towards the nail anvil, and a second protruding portion is arranged at one end of the second limiting piece, which is far away from the nail anvil cap.
In some embodiments, the central shaft assembly includes a snap assembly that, upon snap engagement with the anvil cap, causes the anvil cap to have a compressive tendency toward the anvil.
In some embodiments, the buckle assembly comprises a buckle base, wherein the buckle base is provided with a first surface opposite to the nail anvil cap and a second surface opposite to the nail anvil cap, the buckle base comprises a first installation part and a second installation part, the first installation part is arranged on the first surface and is used for being clamped with the first limiting part, the second installation part is arranged on the second surface, the outer side wall of the second installation part is provided with an installation groove, a first through hole is formed in the end part of the first installation part, the first limiting part extends into the first installation part through the first through hole, and the first protruding part is clamped with the inner wall of the first installation part.
In some embodiments, the anvil assembly for a tubular stapler further comprises a first elastic member sleeved on an end of the first mounting portion to bias the end cap away from the anvil.
In some embodiments, the buckle assembly further comprises a clamping piece, a first protruding key matched with the mounting groove is arranged on one surface, opposite to the buckle base, of the clamping piece, a first concave portion is arranged on one surface, away from the buckle base, of the clamping piece, and a second elastic piece is arranged in the mounting groove, wherein the first concave portion is used for being clamped with the second convex portion.
A second aspect of embodiments of the present disclosure provides a tubular stapler comprising an anvil assembly for a tubular stapler as described in the first aspect of embodiments of the present disclosure.
Compared with the related art, the scheme of the embodiment of the disclosure has at least the following beneficial effects:
the nail anvil component is used in the tubular anastomat, the first patch is clamped between the nail anvil cap and the nail anvil, the first patch can be effectively prevented from being separated from the anastomat, and meanwhile, pollution possibly caused by private patch replacement can be avoided, so that the use safety and the sanitation safety of medical equipment are ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort. In the drawings:
FIG. 1 is a schematic view of the anvil assembly and the center shaft assembly in an unfired state of a tubular stapler according to an exemplary embodiment.
Fig. 2 is a partial enlarged view of a portion a in fig. 1.
Fig. 3 is a partial enlarged view of a portion B in fig. 1.
FIG. 4 is an exploded view of an anvil assembly and a center shaft assembly, according to an exemplary embodiment.
FIG. 5 is a partial exploded view of an anvil assembly according to an exemplary embodiment.
FIG. 6 is a schematic view of a cartridge assembly with an annular knife in a stowed condition, according to an example embodiment.
FIG. 7 is a schematic view of a cartridge assembly with an annular knife in a released state, according to an exemplary embodiment.
Fig. 8 is a schematic structural view showing a patch fastener coupled to a second patch according to an exemplary embodiment.
Fig. 9 is a cross-sectional view showing one patch fastener coupled to a second patch according to one exemplary embodiment.
Fig. 10 is a schematic view of the anvil assembly and the center shaft assembly in a fired condition of a tubular stapler, according to an exemplary embodiment.
Fig. 11 is a partial enlarged view of a portion C in fig. 10.
Fig. 12 is a partial enlarged view of a portion D in fig. 10.
Fig. 13 is a schematic view illustrating a structure of a tubular stapler according to an exemplary embodiment.
FIG. 14 is a schematic view of a cartridge assembly according to one prior art.
Reference numerals:
Anvil assembly 100, anvil cap 110, first stop 111, second stop 112, stop slot 113, first spring 114, knife washer 115, second protruding key 116, anvil 120, and staple-abutting slot 121;
A second through hole 201, a first patch 210, a first body portion 211, a first connection portion 212, a second patch 220, a second body portion 221, a second connection portion 222, and an edge portion 223;
The central shaft assembly 300, the central shaft body 310, the fastener 311, the buckle assembly 320, the buckle base 321, the second elastic piece 322 and the clamping piece 323;
Cartridge assembly 400, patch fastener 410, fastener body 411, first clamping portion 412, second clamping portion 413, projection 414, cartridge 420, clamping groove 421, shaft core 430, annular knife 440;
Firing handle 500, safety catch 510, tubular stapler 1000;
cartridge assembly 400', and cartridge 420'.
Detailed Description
For the purpose of promoting an understanding of the principles and advantages of the disclosure, reference will now be made in detail to the drawings, in which it is apparent that the embodiments described are only some, but not all embodiments of the disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, other words similar.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe the terms. These terms are only used to distinguish. For example, the first..once again may be referred to as the second..once again, and similarly, the second..once again may be referred to as the first..once again without departing from the scope of the embodiments of the present disclosure. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that there may be three relationships, e.g., a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "center," "longitudinal," "transverse," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, are merely for convenience in describing the present embodiments and simplifying the description, and do not denote or imply that the devices or elements 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 invention.
In the description of the present disclosure, unless explicitly stated and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or indirectly connected through an intermediary. 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.
The words "if", as used herein, may be interpreted as "at" or "when" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of additional like elements in a commodity or device comprising the element.
In the related art, the patch is detachably arranged on the nail anvil and the nail bin, and the anastomotic stoma reinforcing patch arranged on the nail anvil adopts a natural attaching structure without applying extra fixation. The nail anvil is further improved, the physical fixing structure is increased, the connection strength of the patch and the nail anvil is further improved, and the use safety is improved.
In view of this, alternative embodiments of the present disclosure are described in detail below with reference to the drawings.
A first aspect of the disclosed embodiments provides an anvil assembly 100 for a tubular stapler 1000. The anvil assembly 100 includes an anvil cap 110, an anvil 120, and a first patch 210.
As shown in fig. 1,2 and 3, the anvil cap 110 is engaged with the anvil 120, so that a portion of the first patch 210 is clamped between the anvil cap 110 and the anvil 120 and fixed, wherein a side of the anvil 120 away from the anvil cap 110 has an anvil end surface.
In some embodiments, the first patch 210 has an annular structure and includes a first body portion 211 and a first connecting portion 212, wherein the first body portion 211 covers at least part of the anvil end surface, the first connecting portion 212 has a saw-tooth structure, and at least part of the first connecting portion 212 is clamped between the anvil cap 110 and the anvil 120.
Specifically, since the sidewall of the anvil 120 is tapered, the patch of the straight periphery employed in the related art cannot completely wrap the anvil 120. Therefore, in the present disclosure, the first connection portion 212 is configured as a zigzag structure, and the zigzag structure has the advantages of having a relatively soft periphery, large tension, good relaxation, and strong expansibility, so as to encapsulate the anvil 120, thereby avoiding the displacement of the first patch 210 on the anvil 120 due to the poor matching between the first patch 210 and the anvil 120 or the relatively large pressing gap, and affecting the stitching effect.
In some embodiments, the anvil assembly 100 further comprises a central shaft assembly 300, wherein the central shaft assembly 300 is engaged with the anvil cap 110 after penetrating the anvil 120, so that the anvil cap 110 has a pressing trend towards the anvil 120 to clamp the first patch 210.
Further, as shown in fig. 2, a first limiting member 111, a second limiting member 112 and a limiting groove 113 are disposed inside the anvil cap 110, wherein the first limiting member 111 is disposed inside the limiting groove 113, and a first protruding portion is disposed at one end of the first limiting member 111 away from the anvil cap 110. The second limiting member 112 is provided with a second protruding portion at an end remote from the anvil cap 110.
The nail anvil cap 110 is further internally provided with a first elastic member 114, the first elastic member 114 is disposed inside the limiting groove 113 and sleeved with the end portion of the central shaft assembly 300, wherein the end portion of the central shaft assembly 300 is disposed inside the limiting groove 113, and the first elastic member 114 is abutted to the inner wall of the nail anvil cap 110. The first resilient member 114 has a tendency to urge the anvil cap 110 away from the central shaft body 310.
In some embodiments, as shown in FIG. 4, the center shaft assembly 300 includes a center shaft body 310 and a catch assembly 320. The fastening component 320 is disposed between the anvil cap 110 and the anvil 120, and is used for fastening the anvil cap 110 to the anvil 120, and the central shaft body 310 is connected to the fastening component 320, and is used for connecting the anvil component 100 to an external force application component.
Specifically, the snap assembly 320 includes a snap base 321 having a first face facing the anvil cap 110 and a second face facing away from the anvil cap 110.
A first mounting portion is disposed on a first surface of the fastening base 321, and the first elastic member 114 is sleeved outside the first mounting portion. The end of the first installation part is provided with a first through hole, the first limiting part 111 penetrates through the first through hole and extends to the inside of the first installation part, and the first protruding part of the first limiting part 111 is clamped with the inner wall of the first installation part.
The second surface of the fastening base 321 is provided with a second mounting portion, and the second mounting portion is connected to one end of the central shaft body 310, so as to connect the anvil assembly 100 with an external force application component.
The two sides of the central shaft body 310 are also provided with fastening pieces 311, the fastening pieces 311 are clamped with the central shaft body 310, and are used for enabling the nail anvil 120 to smoothly move along the central shaft body 310 to a clamping position clamped with the nail anvil cap 110, so that the nail anvil 120 is prevented from being separated from the nail anvil cap 110 after the nail anvil cap 110 is clamped with the nail anvil 120.
As shown in fig. 1,2 and 3, the buckle assembly 320 further includes a second elastic member 322 and a locking member 323.
The clamping piece 323 is provided with a first protruding key matched with the mounting groove on the surface opposite to the clamping base 321 and used for being connected with the clamping base 321, and a first concave part and a first inclined surface are arranged on the surface, away from the clamping base 321, of the clamping piece 323, wherein when the first inclined surface is subjected to external force, the first inclined surface can move in the extending and contracting direction of the second elastic piece 322 so as to squeeze the second elastic piece 322.
The first concave portion of the locking member 323 is configured to be locked with the second convex portion of the second limiting member 112, so that the anvil cap 110 is locked with the anvil 120.
Further, a second protruding key 116 is provided on the anvil cap 110, and the anvil cap 110 has a pressing tendency towards the anvil 120, so that the second protruding key 116 clamps the first patch 210. The first patch 210 moves synchronously with the anvil assembly 100.
In some embodiments, the cartridge assembly 400 includes a cartridge 420, as shown in fig. 6, with a patch fastener 410 disposed within the cartridge 420 for coupling a portion of a fixed patch to the cartridge 420, wherein the cartridge 420 is configured to store staples.
Further, the anvil assembly 100 further includes a knife washer 115, as shown in fig. 3, the knife washer 115 is disposed on a side of the first patch 210 facing the anvil 120, and the knife washer 115 is used for assisting external force to cut the first patch 210 and the second patch 220, so that the first patch 210 and the second patch 220 are cut neatly on the knife washer 115. The cutter-backing ring 115 is configured in an annular structure, and the outer aperture of the cutter-backing ring 115 is larger than the inner aperture of the first patch 210, so that the cutter-backing ring 115 is prevented from being separated from the inner aperture of the first patch 210.
In some embodiments, the second patch 220 includes a second body portion 221 and a second connecting portion 222, the second body portion 221 covers an end surface of the staple cartridge 420, and the second connecting portion 222 is connected to the patch fastener 410 for firmly connecting the second patch 220 to the staple cartridge 420. The second connection portions 222 are provided in plurality, and the second connection portions 222 are disposed at inner circumferential edges of the second body 221 in a discrete manner and extend in a direction substantially perpendicular to the second body 221.
In some embodiments, the second patch 220 further includes an edge portion 223. The edge portion 223 is disposed at the outer edge of the second body 221, extends in the same direction as the second connecting portion 222, and is used to wrap the outer edge of the nail bin 420, so as to avoid the edge of the nail bin 420 from directly contacting with human tissue in practical application.
In some embodiments, the patch panel 410 includes a panel body 411, a first clip portion 412, and a second clip portion 413.
The first clamping portions 412 are provided with a plurality of first clamping portions 412, as shown in fig. 8, and the plurality of first clamping portions 412 extend along the fixing member body 411 in a direction away from the second patch 220, for connecting with the nail bin 420. The nail bin 420 is internally provided with a clamping groove 421, and the clamping groove 421 is connected with the first clamping portion 412 of the patch fixing member 410.
The second clamping portions 413 are provided in plurality, and the plurality of second clamping portions 413 extend along the fixing member body 411 toward a direction approaching the second patch 220, for connecting the second patch 220.
Specifically, the second clamping portion 413 is provided with a protrusion 414, and the second connection portion 222 of the second patch 220 is provided with a second through hole 201, as shown in fig. 9, and the second through hole 201 passes through the protrusion 414 to connect the second connection portion 222 with the second clamping portion 413, that is, to connect the second patch 220 with the patch fixture 410.
In some embodiments, the anvil assembly 100 may be coupled to the cartridge assembly 400, and in particular, the anvil assembly 100 and the cartridge assembly 400 may have a first state and a second state.
When the anvil assembly 100 and the cartridge assembly 400 are in the first state, the anvil 120 is separated from the cartridge 420, the first patch 210 and the second patch 220 are separated, and the first patch 210 and the second patch 220 are assembled to the anvil 120 and the cartridge 420, respectively.
When the anvil assembly 100 and the cartridge assembly 400 are in the second state, the anvil 120 is engaged with the cartridge 420, the first patch 210 is engaged with the second patch 220, and the staples in the cartridge 420 connect the first patch 210 to the second patch 220.
In some embodiments, the cartridge assembly 400 further comprises a shaft core 430, wherein a third connecting portion adapted to be connected to the central shaft body 310 is provided on an inner wall of the shaft core 430, and the central shaft body 310 is connected to the third connecting portion when the anvil assembly 100 and the cartridge assembly 400 are switched from the first state to the second state.
Specifically, when the anvil assembly 100 and the cartridge assembly 400 are in the second state, the end of the central shaft body 310 away from the anvil cap 110 extends toward the inside of the cartridge 420 and is connected to the third connecting portion in the shaft core 430, so that the anvil 120 is attached to the cartridge 420.
In some embodiments, the cartridge assembly 400 further comprises an annular knife 440. The annular knife 440 is sleeved outside the positioning shaft 430 and moves in the length direction of the shaft 430.
The annular knife 440 has a stowed position and a released position relative to the cartridge assembly 400.
When the anvil assembly 100 and the cartridge assembly 400 are in the first state, the annular knife 440 is received within the cartridge 420 as shown in FIG. 6, with the annular knife 440 in the received position, and when the anvil assembly 100 and the cartridge assembly 400 are in the second state, the tubular stapler 1000 can be fired to switch the annular knife 440 from the received position to the released position.
As shown in FIG. 7, the end of the annular knife 440 in the fired condition extends out of the cartridge assembly 400 for severing the first and second patches 210, 220.
In some embodiments, a staple supporting groove 121 is provided on an end surface of the anvil 120, and the staple supporting groove 121 is used for extruding and deforming the staples. Further, the first patch 210 is stitched to the second patch 220. The first and second patches 210 and 220 stapled by the staples are connected with the human tissue, and the first and second patches 210 and 220 of the cut portion are cut off together with the human tissue by the circular knife 440.
In some embodiments, the annular knife 440 switches from the released position to the stowed position when the tubular stapler 1000 is returned from the fired state to the initial state. The first patch 210, the second patch 220, and the body tissue sutured by the first patch 210 and the second patch 220 are cut together by the circular knife 440.
In some embodiments, the anvil cap 110 and anvil 120 have a clamped state that clamps the first patch 210 and a released state that releases the first patch 210.
As shown in fig. 10, 11 and 12, after the annular knife 440 cuts off the first patch 210 and the second patch 220, the annular knife 440 continues to move toward the anvil cap 110, and the annular knife 440 cuts off the knife pad 115 and presses in contact with the first inclined surface of the clamping member 323, so that the clamping member 323 presses the second elastic member 322. The second elastic member 322 is compressed, the clamping member 323 moves toward the fastening base until the first concave portion of the clamping member 323 is disengaged from the clamping portion of the second convex portion of the second limiting member 112, and further, the anvil cap 110 is separated from the anvil 120 and releases the first patch 210, at this time, the first patch 210 is disengaged from between the anvil cap 110 and the anvil 120.
A second aspect of the present disclosure provides a tubular stapler 1000, the tubular stapler 1000 including the anvil assembly 100 of the first aspect of the present disclosure.
In some embodiments, the tubular stapler 1000 further includes a firing handle 500 and a safety stop 510. As shown in fig. 13, when the anvil assembly 100 and the cartridge assembly 400 are in the second state, the tubular anastomat 1000 can be fired, before the tubular anastomat 1000 is fired, the safety bolt 510 needs to be peeled off the firing handle 500, and further, the firing handle 500 is pressed with full force, so that the whole cartridge 420 moves towards the front end of the tubular anastomat 1000, and simultaneously, the staples and the annular knife 440 are pushed out. The staples are sent out by the staple cartridge 420 and are deformed by contacting with the staple supporting grooves 121 at the end part of the staple anvil 120, so that the first patch 210 and the second patch 220 are partially connected and fixed, and the annular knife 440 is sent out by the staple cartridge 420 and cuts off the first patch 210 and the second patch 220.
Further, the annular knife 440 continues to move toward the anvil cap 110, severing the knife washer 115 and ejecting the anvil cap 110, releasing the first patch 210.
In other embodiments, after the anvil cap 110 is ejected from the anvil 120, the anvil cap 110 may be retracted along with the central shaft body 310 to pass through the anvil 120, and further, the anvil assembly 100 may be moved along with the central shaft assembly 300 to be carried out of the human body.
The anvil assembly 120 with the tubular stapler 1000 and the tubular stapler 1000 provided by the present disclosure are disposable devices, the anvil assembly 100 has the anvil cap 110 of the anvil 120 clamped and the patch fastener 410 connected, so that the first patch 210 and the second patch 220 can be respectively connected with the anvil 120 and the staple cartridge 420, and the first patch 210 and the second patch 220 can be effectively prevented from being pulled out of the stapler. When the first patch 210 is removed from the space between the anvil cap 110 and the anvil 120, it cannot be reinstalled in the tubular stapler 1000, so that the possible pollution caused by the private replacement of the patch can be avoided, and the safety and the sanitary safety of the medical apparatus can be ensured.
The biological material used for the fixing patch is selected from degradable high polymer materials or degradable animal-derived biological materials. Preferably, the degradable animal-derived biomaterial comprises an immunogen-removed dermal matrix, pericardium, peritoneum, urinary bladder submucosa or small intestine submucosa, or a combination of these materials, such as obtained by lamination, braiding, inlaying, and the like. Preferably comprises decellularized intestinal submucosa matrix material. The degradable polymeric material may be selected from PGA, PLA or PLGA, or a combination of these materials, for example obtained by lamination, braiding, inlaying or the like.
The specific structure, working principle and beneficial effects of the anvil assembly 120 for the tubular anastomat 1000 and the tubular anastomat 1000 provided in the embodiments of the present disclosure may refer to any of the anvil assembly 120 for the tubular anastomat 1000 and the tubular anastomat 1000 described in any of the embodiments, and are not described herein.
Although the present disclosure describes anvil assembly 100 with first patch 210 and cartridge assembly 400 with second patch 220 in combination. Indeed, anvil assembly 100 of the present disclosure may be used in conjunction with cartridge assembly 400 without second patch 220, as well as in conjunction with cartridge assemblies with patches in other forms. That is, anvil assembly 100 of the present disclosure is generic and can be used as a component of various types of tubular staplers.
As shown in FIG. 14, FIG. 14 is a schematic view of a cartridge assembly according to one prior art embodiment. In practice, the anvil assembly 100 provided by the present disclosure may be used in conjunction with a cartridge assembly without a patch, such as cartridge assembly 400 'shown in fig. 14 without a patch disposed on a cartridge end face of cartridge 420'. Anvil assembly 100 may also be used in conjunction with cartridge assemblies with other forms of patches, such as cartridge assembly 400' fitted with an adapter patch.
Finally, it should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are only required to be mutually referred. The system or the device disclosed in the embodiments are relatively simple in description, and the relevant points refer to the description of the method section because the system or the device corresponds to the method disclosed in the embodiments.
The foregoing embodiments are merely for illustrating the technical solutions of the present disclosure, and not for limiting the same, and although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure in essence.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311320707.6A CN117379127B (en) | 2023-10-12 | 2023-10-12 | Anvil assembly for tubular anastomat and tubular anastomat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311320707.6A CN117379127B (en) | 2023-10-12 | 2023-10-12 | Anvil assembly for tubular anastomat and tubular anastomat |
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| CN117379127A CN117379127A (en) | 2024-01-12 |
| CN117379127B true CN117379127B (en) | 2025-01-07 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN219207111U (en) * | 2022-09-27 | 2023-06-20 | 天臣国际医疗科技股份有限公司 | Auxiliary piece components and medical stapler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8464925B2 (en) * | 2010-05-11 | 2013-06-18 | Ethicon Endo-Surgery, Inc. | Methods and apparatus for delivering tissue treatment compositions to stapled tissue |
| WO2012032302A1 (en) * | 2010-09-09 | 2012-03-15 | Queen Mary & Westfiled College | Method and apparatus for forming stoma trephines and anastomoses |
| CN103156660B (en) * | 2012-12-26 | 2015-05-06 | 苏州天臣国际医疗科技有限公司 | Circular tube type anastomat |
| CN107550532B (en) * | 2017-10-17 | 2023-07-18 | 北京博辉瑞进生物科技有限公司 | Anastomotic stoma reinforcing repair piece |
| US10806459B2 (en) * | 2018-09-14 | 2020-10-20 | Covidien Lp | Drug patterned reinforcement material for circular anastomosis |
| CN112603588B (en) * | 2020-12-22 | 2024-07-05 | 北京大清生物技术股份有限公司 | Biological patch and anastomosis device |
| CN217066476U (en) * | 2021-12-30 | 2022-07-29 | 无锡贝恩外科器械有限公司 | Anastomat device for operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN219207111U (en) * | 2022-09-27 | 2023-06-20 | 天臣国际医疗科技股份有限公司 | Auxiliary piece components and medical stapler |
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