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WO2024228170A1 - Agrafeuse chirurgicale - Google Patents

Agrafeuse chirurgicale Download PDF

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Publication number
WO2024228170A1
WO2024228170A1 PCT/IB2024/054332 IB2024054332W WO2024228170A1 WO 2024228170 A1 WO2024228170 A1 WO 2024228170A1 IB 2024054332 W IB2024054332 W IB 2024054332W WO 2024228170 A1 WO2024228170 A1 WO 2024228170A1
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WO
WIPO (PCT)
Prior art keywords
staple
affected area
receptacle
surgical stapler
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/IB2024/054332
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English (en)
Inventor
Gosai Gaurangkumar ASHWINGIRI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2024228170A1 publication Critical patent/WO2024228170A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A61B17/0644—Surgical staples, i.e. penetrating the tissue penetrating the tissue, deformable to closed position
    • 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
    • A61B17/0682—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil
    • A61B17/0684—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil having a forming anvil staying above the tissue during stapling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0801—Prevention of accidental cutting or pricking
    • A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs

Definitions

  • TITLE “A SURGICAL STAPLER”
  • Present disclosure relates to the field of medical devices. Particularly, but not exclusively, embodiments of the present disclosure relate to surgical stapler.
  • closure is usually done by sutures, staplers, adhesives, or strips as described above. Closure with sutures is generally time-consuming, tedious, and not easy to perform for certain closure techniques. Another disadvantage of using a suture is possible strangulation and necrosis of the tissue due to high pressure exerted by relatively small surface area of the suture and over-tightening of the suture in order to tie the suture snugly.
  • Sutures are of two types, a non-biodegradable and bio-degradable suture. While use of biodegradable sutures include exceedingly early loss of tensile strength, causes inflammation by the degradation products of the suture, and subsequent granulomas in the tissue, the non- bio-degradable sutures need to be removed after some days and if kept for longer periods may lead to scarring of the tissues. With myriad drawbacks posed by the sutures, surgical staplers are developed to close the wounds.
  • Surgical staplers are medical devices that may be used in place of sutures.
  • the surgical staplers can close large wounds or incisions more quickly and may be less painful than stitches for patients. They can also be used to close wounds in areas where the skin is tight against bone, in operations to remove organs, or to reconnect parts of internal organs.
  • Surgical staplers are frequently used to close incisions in the abdomen and uterus during caesarean deliveries, or C- sections.
  • Surgical staplers have recently started to be utilized in the healthcare sector including both human medicine and veterinary practices, for the purpose of suturing wounds and incisions.
  • the surgical skin stapling is desirable in that it requires less skill of the health care worker/clinician than conventional suture ligature.
  • the removal of staples is faster and easier than suture ligature.
  • simplicity in wound and incision closure decreasing the possibility of an error is an accomplishment of particular importance in the healthcare field.
  • the surgical stapling also provides a better post-surgery aesthetic appearance than conventional suture ligature and needle wound closure.
  • postoperative infection is reduced in the use of skin stapling over conventional ligature because surgical stapling takes less time than conventional suture ligature.
  • stapling of a wound is accomplished by manually approximating the opposing sides of the wound opening and then positioning the surgical stapler so that a staple will span the opening.
  • the surgical stapler is then manipulated such that the staple is driven into the skin with one leg being driven into each side of the skin and the cross-member of the staple extending across the opening external to the skin surface.
  • the legs of the staple are driven into an anvil causing the staple to deform to retain the skin tissue in a compressed manner within the staple.
  • the conventional stapler provides an effective manner of closing the wound, however there remains a series of inherent disadvantages in using the conventional stapler.
  • the biggest disadvantage of the conventional stapler is the structure of the staple.
  • the structure of the staple doesn’t allow for optimal load transfer across the two sides of the wound, which may result in damaging of the captured tissue.
  • the conventional staple doesn’t provide optimal and consistent eversion of the wound edges for better cosmetic outcome.
  • the conventional stapler lacks a mechanism for capturing the optimal amount of tissue for the dimension and the structure of the staple, which sometimes capture more or less amount of tissue than the ideal. Capturing more amount of tissue than the required amount leads to pressure necrosis and subsequent scarring. On the other side, capturing less amount of tissue than the ideal may lead to lose closure and subsequent opening and widening of the wound.
  • the surgical stapler includes a combination of a staple feeding mechanism and a staple forming mechanism secured in a frame and an actuating trigger functionally connected to both the staple feeding mechanism and the staple forming mechanism.
  • the staple feeding mechanism includes a rail to guide contained staples serially to a staple forming position and a shuttle in association with the rail as a movable staple retaining cover. The shuttle being functionally connected to the trigger for movement in the same direction and the same time as the staples. This structure provides a reliable surgical stapler in which staples are not likely to jam the staple feeding mechanism.
  • the surgical stapler includes a stapler body and a driver contained therein.
  • a magazine is connected to the stapler body and includes a staple track for carrying a plurality of staples wherein each of the staples has staple legs.
  • An anvil is associated with the staple track for providing a staple forming surface for forming a staple thereon.
  • a feeder element which is spring biased against the staples is used for feeding each staple from the staple track to the anvil.
  • a trigger is operatively connected to the driver and is movable from a pre-fire position to a firing position for advancing the driver against the anvil for forming the staple against the anvil.
  • a kick-off spring is positioned beneath and substantially parallel to the staple track and the anvil.
  • the kick-off spring has a deflectable tip which is deflected away from the anvil and engages the staple legs of the staple by downwardly camming against the staple legs when the trigger is moved from its pre-fire position to its firing position.
  • the kick-off spring ejects the staples off and away from the anvil by disengaging the staple legs with the deflectable tip by upwardly camming against the staple legs upon returning of the trigger from the firing position to the pre-fire position.
  • a surgical stapler in a non-limiting embodiment of the present disclosure, includes a stapler body one end of the stapler body being provisioned with a receptacle to receive an affected area of a specimen.
  • a circular base defines a curvilinear path structured to guide one staple of the plurality of staples towards an outlet end defined in the receptacle.
  • the surgical stapler includes a drive mechanism being structured to displace the one staple of the plurality of staples accommodated in the cartridge out of the receptacle and through the affected area received in the receptacle.
  • the drive mechanism includes a conveying member being configured to be displaced between a first position and a second position relative to the curvilinear path.
  • the surgical stapler includes a deforming module disposed proximal to an inlet end of the receptacle and structured to deform a portion of the one staple extending out of the affected area from the other end for stapling the one staple relative to the affected area.
  • the stapler body defines an enclosure formed by an elongated base plate.
  • the elongated base plate having a length longer than a width, a sidewall structure extending along a periphery of the elongated base plate about the length.
  • a top cover positioned on the sidewall structure to define a space therebetween.
  • the stapler body defines a bottom opening and a top opening about the width.
  • the bottom opening is structured to receive the receptacle and the top opening structured to receive a cover.
  • the receptacle is integrated with the circular base of the cartridge.
  • the actuator includes a circular disc coupled to the conveying member through a linkage bar.
  • the circular disc being displaceable in at least one of a clockwise direction and an anti-clockwise direction to displace the conveying member by imparting motion through the linkage bar.
  • the conveying member may be at least one of a pusher arm, a conveyor belt and a slider.
  • the actuator includes a plunger extending into the stapler body and operatively engaged with the circular disc.
  • the plunger being displaceable between an extended position and a depressed position to impart rotary movement to the circular disc.
  • the plunger is defined with a plurality of first teeth structured to mesh with a plurality of second teeth defined along a circumference of the circular disc.
  • an end of the plunger out of the stapler body is defined with a handle and an other end of the plunger within the stapler body is defined with a plurality of prongs.
  • the plurality of prongs is structured to displace the deforming module between a resting position and a clamping position during displacement of the plunger to the depressed position. Displacement of the deforming module to the clamping position, deforms the pair of curved arms about the deformation point to staple the one staple relative to the affected area of the specimen.
  • a resilient member disposed between the plunger and the cartridge, wherein the resilient member is configured to bias the plunger towards the extended position from the depressed position.
  • each of the plurality of staples includes a pair of curved arms, an end of the pair of curved arms is defined with a bridge member and the free end of one staple is defined with a tip to penetrate the affected area of the specimen.
  • each arm of the pair of curved arms is defined with a deformation point. A portion of each arm of the pair of curved arms towards the free end being deformable about the deformation point.
  • a plurality of gripping module coupled to the stapler body proximal to the receptacle, the plurality of gripping module configured to grip and draw the affected area into the receptacle area.
  • the receptacle is defined with a guard protruding outwardly from substantially center portion of the receptacle.
  • the guard prevents unintended stapling and injury of structures proximal to the to the affected area of the specimen.
  • a staple for a surgical stapler in an another embodiment of the present disclosure, includes a pair of curved arms, one end of the pair of curved arms being connected to each other via a bridge member. Free end of the pair of curved arms defined with a tip to penetrate through the affected area.
  • the pair of curved arms are significantly parallel to each other.
  • the pair of curved arms is defined with a deformation point and a portion of the pair of curved arms towards the tip deforms about the deformation point to form a retaining bridge substantially parallel to the bridge member.
  • the plurality of staples is made of bio-degradable material.
  • a surgical stapler assembly in yet an another embodiment of the present disclosure, includes a surgical stapler having a stapler body. One end being provisioned with a receptacle to receive an affected area of a specimen. A plurality of staples, one staple of the plurality of staples defined with a pair of curved arms. One end of the pair of curved arms being connected to each other via a bridge member and free end of the pair of curved arms defined with a tip to penetrate through the affected area.
  • a circular base defines a curvilinear path structured to guide one staple of the plurality of staples towards an outlet end defined in the receptacle.
  • the surgical stapler includes a drive mechanism being structured to displace the one staple of the plurality of staples accommodated in the cartridge out of the receptacle and through the affected area received in the receptacle.
  • the drive mechanism includes a conveying member being configured to be displaced between a first position and a second position relative to the curvilinear path.
  • An actuator operatively coupled to the conveying member and being actuatable to displace the conveying member between the first position and the second position relative to the curvilinear path.
  • the conveying member displace the one staple of the plurality of staples to penetrate the affected area from one end and extend out of the affected area from an other end.
  • the surgical stapler includes a deforming module disposed proximal to an inlet end of the receptacle and structured to deform a portion of the one staple extending out of the affected area from the other end for stapling the one staple relative to the affected area.
  • Fig. 1 illustrates an exploded view of a surgical stapler assembly, in accordance with an embodiment of the present disclosure
  • Fig. 2a illustrates a side view of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 2b illustrates an isometric view of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 2c illustrates a bottom view of a gripping module of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 2d illustrates an isometric view of a receptacle of the surgical stapler assembly of Fig 1, in accordance with an embodiment of the present disclosure
  • Fig. 2e illustrates an isometric view of a guard of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig 3a illustrates an isometric view of a drive mechanism of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig 3b illustrates an isometric view of a drive mechanism of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig 3c illustrates an isometric view of a plunger of the drive mechanism of Fig 3a, in accordance with an embodiment of the present disclosure
  • Fig. 4a illustrates an isometric view of an actuator of the drive mechanism of Fig. 3a, in accordance with an embodiment of the present disclosure
  • Fig. 4b illustrates a side view of an actuator of the drive mechanism of Fig. 3a, in accordance with an embodiment of the present disclosure
  • Fig. 5a illustrates a cross sectional view of a cartridge of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 5b illustrates an isometric view of a deforming module of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 6a illustrates an isometric view of a staple of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 6b illustrates an isometric view of the staple of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure
  • Fig. 6c illustrates a side view of the staple of the surgical stapler assembly of Fig. 1, in accordance with an embodiment of the present disclosure.
  • Fig. 7 illustrates an isometric view of an affected area with a stapler of Fig 6a, in accordance with an embodiment of the present disclosure.
  • the figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
  • a surgical stapler is disclosed.
  • the surgical stapler of the present disclosure is convenient and easy to use.
  • the surgical stapler of the present disclosure is simple to operate and is substantially economical compared to conventional surgical stapling devices.
  • the surgical stapler includes a stapler body, one end of the stapler body being provisioned with a receptacle to receive an affected area of a specimen.
  • a cartridge provisioned within the stapler body and being structured to receive and accommodate a plurality of staples.
  • the cartridge being defined with a circular base disposed proximal to the receptacle and an opening on an end opposite to the circular base.
  • the circular base defines a curvilinear path structured to guide one staple of the plurality of staples towards an outlet end defined in the receptacle.
  • the surgical stapler includes a drive mechanism being structured to displace the one staple of the plurality of staples accommodated in the cartridge out of the receptacle and through the affected area received in the receptacle.
  • the drive mechanism may further include a conveying member being configured to be displaced between a first position and a second position relative to the curvilinear path.
  • An actuator operatively coupled to the conveying member and being actuatable to displace the conveying member between the first position and the second position relative to the curvilinear path.
  • the conveying member displace the one staple of the plurality of staples to penetrate the affected area from one end and extend out of the affected area from an other end.
  • the surgical stapler includes a deforming module disposed proximal to an inlet end of the receptacle and structured to deform a portion of the one staple extending out of the affected area from the other end for stapling the one staple relative to the affected area.
  • the surgical stapler of the present disclosure may provide an improved strength and equal force distribution across the wound and prevents the damage of the tissue as compared to the conventional devices .
  • the term of approximation such as “substantially” when used in reference to physical characteristics in the present disclosure, should be understood to contemplate a range of deviations that would be appreciated by one of ordinary skill in the art to operate satisfactorily for a corresponding use, function, purpose, or the like.
  • the term “substantially” is a descriptive term commonly used in disclosures to avoid a strict numerical boundary to the specified parameter. Any reference to an object in the specification that is preceded by a definite or indefinite article, such as 'the', 'a', or 'an', should be understood to encompass both the singular and the plural forms of the object”. Accordingly, “a” means “at least one/ one or more”.
  • the phrase “a/an X” may be construed as “at least one/one or more X”.
  • the surgical stapler assembly (150) among other components may include a surgical stapler (100) and a surgical staple (300) [hereinafter referred to as staple (300)].
  • the surgical stapler (100) will be elucidated in detail henceforth in conjunction to the figures.
  • the surgical stapler (100) may be configured to staple an affected area (220) of a specimen through a plurality of staples (300).
  • the term “affected area (220) of the specimen” refers to as an area of a living being which is surgically incised or an area which is inflicted with a wound [such as a cut that may be caused accidentally].
  • the term plurality of staples (300) in the present disclosure refers to the configuration defined here above and below and the plurality of staples (300) of similar configuration being stacked one above the another.
  • the surgical stapler (100) as described may be structured to close the affected area (220) to allow the affected area (220) to heal.
  • the affected area (220) may be but not limiting to an epithelial tissue, a connective tissue, a muscular tissue and like.
  • the surgical stapler (100) may have a stapler body (200) that may define an enclosure to receive the other components which will be elucidated in detail in the forthcoming paragraphs.
  • the stapler body (200) may be formed by an elongated base plate (200b) and a top cover complimenting the shape of and spaced apart from the elongated base plate (200b).
  • the elongated base plate (200b) may be defined with a length (L) longer than a width (W).
  • the vice-versa i.e., the width (W) being longer than the length (L) may also be contemplated herein without deviating from the scope of the present disclosure.
  • a sidewall structure (200c) may be defined between the elongated base plate (200b) and the top cover (X). Said sidewall structure (200c) may extend in a direction of the length (L) along the periphery of the top cover (X) and the elongated base plate (200b), thereby connecting the same.
  • a space may be defined between the top cover (X) and the elongated base plate (200b) to accommodate the components of the surgical stapler.
  • the stapler body (200) may include a bottom opening (P) and a top opening (T) defined about the width (W) direction of the stapler body (200).
  • the bottom opening may be structured to receive a receptacle (203), whereas the top opening may be structured to receive a cover (not explicitly illustrated).
  • the shape of the receptacle (203) may be an inverted V- shape, wherein arms of the receptacle (203) may converge into the space defined by the stapler body up to a distance.
  • the receptacle (203) may be structured to receive and hold the affected area (220) of the specimen.
  • an inner surface of the receptacle (203) may be defined with an outlet end (203b) and an inlet end (203a).
  • Both the inlet end (203a) and the outlet end (203b) may complement each other such that a plurality of the staples (300) may pass from the outlet end (203b) to the inlet end (203a).
  • the receptacle (203) may be defined with a plurality of gripping module (210) coupled to the stapler body (200).
  • the plurality of gripping module (210) may be in a ’L’ shaped structure and may be pivotally connected to the receptacle (203).
  • other feasible shapes of the the plurality of gripping module (210) may be contemplated herein without deviating from the scope of the present disclosure.
  • the plurality of gripping modules (210) may be configured to grip and draw the affected area (220) into the receptacle (203) such that the affected area (220) is firmly positioned between the outlet end (203b) and the inlet end (203a) to receive the surgical staple (300).
  • the plurality of gripping module (210) ensures that the optimum amount of the affected area is drawn (220) towards the receptacle (203) when the stapler body (200) is positioned on the affected area (220) of the specimen.
  • the stapler body (200) proximal to the receptacles (203) may be provided with a suction module to draw affected area (220) into the space defined by the receptacle (203).
  • a plurality of rollers may be provided to draw the affected area (220) into the space defined by the receptacle (203).
  • other feasible mechanisms may be employed to draw the affected area (220) without deviating from the scope of the present disclosure.
  • the receptacle (203) may further be defined with a guard (202g) protruding outwardly from substantially center portion of the receptacle (203).
  • the guard (202g) may be defined with a protuberance at the lower end.
  • the guard (202g) may be structured to prevent unintended stapling and injury of structures proximal to the affected area (220) of the specimen.
  • the guard (202g) may be structured to push the structures proximal to the affected area downwardly during the stapling of the affected area (220).
  • the stapler body (200) may be defined with a gripping member (222) on an end opposite to the end with the receptacles (220).
  • the gripping member (222) may project outwardly and may be substantially perpendicular to the sidewall structure of the stapler body (200).
  • the gripping member (222) may be provided to enable operator to firmly hold the stapler body (200) during stapling operation
  • the gripping member (222) may be defined along a portion of the sidewall structure, the top cover and the elongated base plate.
  • the portion of the gripping member (222) proximal to the top opening may be knurled or may be rubberised to provide suitable grip to the operator during stapling operation.
  • the gripping member (222) may be structured/configured to receive the fingers of operator (i.e., skilled clinician) and provide suitable grip to the operator during the use of the surgical stapler (100).
  • the drive mechanism (202) may include an actuator (212).
  • the actuator (212) among other components that will be elucidate below may include a handle (410).
  • the handle (410) may protrude outwardly from the cover provided on the top opening. A portion of the handle (410) may extend into the stapler body (200) and a remaining portion of the handle (410) may be out of the stapler body (200).
  • the handle (410) may be displaceable between an extended position and a depressed position.
  • the handle (410) may be actuated manually by the operator or may be operated semi-automatically or automatically without deviating from the scope of the present disclosure.
  • the handle (410) may include a plunger (402) and a head (401a) defined on the plunger (402) to form a gripping means for the operator to displace the plunger (402) between the extended position and the depressed position.
  • Said plunger (402) may partially extend into the space in the stapler body (200) and also a portion of the plunger with the head (401a) resides out of the stapler body.
  • a lower end i.e., an end of the plunger (402) that is within the stapler body (200) and opposite to the head (401a) may be defined with a plurality of prongs (403).
  • a portion of the plunger (402) may be defined with a plurality of first teeth (402a).
  • the plurality of first teeth (402a) may be structured to mesh with a circular disc (202d) of the actuator (212).
  • the circular disc (202d) may be disposed within the stapler body (200) and may be rotatably connected to either of the top cover or the elongated base plate or both without deviating from the scope of the present disclosure.
  • the circular disc (202d) may be defined with a plurality of second teeth (401b) about a circumferential surface and may be configured to mesh with the plurality of first teeth (402a) on the plunger (402).
  • a gear wheel (401) may be juxtaposed to one major surface of the circular disc (202d), wherein the gear wheel (401) may be defined with the plurality of second teeth(401b) that may mesh with the plurality of first teeth (402a).
  • the operative engagement between the circular disc (202d) and the plunger (402) may resemble a rack and pinion configuration. However, such configurations should not be construed as a limitation of the present disclosure as feasible configuration may be employed.
  • Displacement of the plunger (402) between the extended position and the depressed position may actuate the rotation of the circular disc (202d) in at least one of a clockwise or an anticlockwise direction.
  • An other major surface of the circular disc (202d) may be operatively coupled to one end of a linkage bar (202c).
  • the linkage bar (202c) may be of any desired shape and size based upon the requirement.
  • Another end opposite to the one end of the linkage bar (202c) may be operatively coupled with a conveying member (202a).
  • the linkage bar (202c) may be configured to displace the conveying member (202a) between a first position and a second position based on the rotational motion of the circular disc (202d) in at least one of the clockwise direction and the anticlockwise direction.
  • the conveying member (202a) may be at least one of a pusher arm, a conveyor belt, a slider arm and the like connected to the linkage bar (202c).
  • the surgical stapler (100) may include a resilient member (404).
  • the resilient member (404) disposed between the plunger (402) and a cartridge (201) [which is elucidated in the forthcoming embodiments] disposed in the stapler body (200).
  • the cartridge (201) may be defined in the stapler body (200) to accommodate a plurality of staples (300).
  • the plurality of staples (300) may be accommodated in the stapler body (200), wherein the structure of the stapler body (220) acts as the catridge (201).
  • the resilient member (404) may be configured to bias the plunger (402) towards the extended position from the depressed position.
  • the resilient member may be at least one of but not limiting to a helical spring, a torsion spring and the like.
  • the surgical stapler (100) may be provided with the cartridge (201) and may be provisioned within the stapler body (200).
  • dimensions of the stapler body (200) and the cartridge (201) is not elucidated as the same may be varying based on requirement such as number of staples to be accommodated, dimensions of the staple, type of affected area to be stapled, size of the affected area and the like.
  • the cartridge (201) may be integrally defined with the stapler body (200). In an implementation, the cartridge (201) may be removably disposed in the stapler body (200) without deviating from the scope of the present disclosure.
  • the cartridge (201) may be structured to receive and accommodate the plurality of staples (300).
  • the cartridge (201) may be defined with an opening at a top end to receive the plurality of staples (300).
  • the cartridge (201) may be provided with a feeding member (406) to retain force and to feed one staple of the plurality of staples (300) on to a base (206) that may be in operational engagement with the cartridge (201).
  • the base (206) may be substantially semicircular or circular and may hereinafter be referred to and interchangeably used as “the circular base”.
  • the circular base (206) may be provisioned proximal to the receptacle at an end opposite to the top end of the cartridge (201).
  • the circular base (206) may be defined integral to the cartridge (201) at the end opposite to the top end. In an another embodiment, the circular base (206) may be an integral part of the receptacle (203). In an alternate embodiment, the circular base (206) may be disposed in the stapler body (200) relative to and between the receptacle (220) and the cartridge (201) and secured to the stapler body (200). In another implementation, the circular base (206) may be defined integrally with the stapler body (200) without deviating from the scope of the present disclosure. The circular base (206) may be disposed proximal to the receptacle (203) of the stapler body (200). The circular base (206) may be defined with a curvilinear path (202b).
  • the conveying member (202a) may be pivotally coupled.
  • the conveying member (202a) of the drive mechanism (202) may be displaced between the first position (A) and the second position (B) relative to the curvilinear path (202b).
  • the first position (A) [as illustrated in Fig 5a] is defined as the position in which the one of the staple (300a) of the plurality of staples (300) is on the curvilinear path.
  • the second position (B) [as illustrated in Fig 7] may be defined as the position in which the one of the staple (300a) of the plurality of staples (300) enters the affected area (220) after the one staple being driven by the conveying member (202a).
  • the curvilinear path (202b) structured to guide the one staple (300a) of the plurality of staples (300) from the outlet end (203b) defined in the receptacle (203) towards the inlet end (203a).
  • the surgical stapler (100) may include a deforming module (204) disposed proximal to the inlet end (203a) of the receptacle (203).
  • the deforming module (204) may include a first end rotatable about a joint and a second end structured to deform the one staple of the plurality of staples (300) extending into the inlet end (203a).
  • the deforming module (204) may be operable by the plunger (402) through the plurality of prongs (403).
  • the plurality of prongs (403) may displace the deforming module (204) between a resting position and a clamping position.
  • the second end of the deforming module (204) may travel towards each other to deform a portion of the one staple (300a) extending out of the affected area (220) and may staple the one staple (300a) relative to the affected area (220).
  • the portions of the curved arms (301) extending out of the affected area (220) may stay outside the skin surface.
  • the inlet end (203a) of the receptacle area (203) may be defined with grooves. The grooves may be defined on the surface of the inlet end (203a) and the grooves are configured to deform the portion of the one staple (300a) extending out of the affected area (220) and may staple the one staple (300a) relative to the affected area (220).
  • the plurality of staples (300) are disclosed as illustrated in Fig 6a to Fig. 7 .
  • the plurality of staples (300) may include a pair of curved arms (301).
  • the pair of curved arms (301) may be in substantially parallel plane to each other.
  • the pair of curved arms (301) may have the same arc length and the same curvature.
  • one arm of the pair of curved arms (301) may have a different arc length and a different curvature with respect to the another arm of the pair of curved arms (301). This might allow for better shallow wound layer closure along with deep layer wound closure in the required cases.
  • the plurality of curved arms (301) may be provided with one end.
  • the one end of the pair of curved arms (301) being connected to each other via a bridge member (303).
  • the bridge member (303) holds the pair of curved arms (301) from deformation while entering into the affected area.
  • a free end of the pair of curved arms (301) may be defined with a tip (301a) to penetrate through the affected area (220) of the specimen.
  • a portion of the pair of curved arms (301) towards the tip (301a) may be defined with a deformation point (302).
  • Both the pair of curved arms (301) are structured to be deformed inwardly towards each other about the deformation point (302) such that to form a retaining bridge which may or may not be parallel to the bridge member (303). Further, only the bridge member and the portions of the pair of curved arms (301) distal to the deformation point (302) towards the tip may stay outside the skin surface.
  • the plurality of staples (300) may be made of a bio degradable material.
  • the user aligns the surgical stapler assembly (150) with the affected area.
  • the affected area (220) may be received in the receptacle (203) through the plurality of gripping module (210).
  • the affected area (220) may be received in the receptacle upon placing the stapler body (200) about the affected area (220) and slightly inducing the pressure on the stapler body (200)to push the affected area (220) into the receptacle (203).
  • the plunger (402) may be displaced in the depressed position and may impart rotary motion to the circular disc (202d).
  • the circular motion of the circular disc (202d) may be transferred to the conveying member (202a) via the linkage member to displace the conveying member (202a) from the first position (A) to the second position (B) and pushes the one staple (300a) of the plurality of staples (300) out of the outlet end (203b).
  • the one staple (300a) in the second position (B) exits from the outlet end (203b) and penetrates the affected area (220) from one end and enters the inlet end (203a) from another end.
  • the plurality of prongs (403) may activate the deforming module (204) that in turn deforms the portion of the pair of curved arms (301) about the deformation point (302).
  • the portion of the pair of curved arms (301) turns inwardly to capture the affected area there between.
  • the resilient member (404) pushes the plunger (402) into the extended position and the conveying member (202a) may return to it’s initial position.
  • the next staple is loaded, and the surgical stapler assembly (150) is ready for the next round.
  • the surgical stapler (100) along with the plurality of staples (300) may provide an improved strength and equal force distribution across the wound and prevents the damage of the tissue as compared to the conventional devices.
  • the surgical stapler assembly (150) is capable of providing bi-layer equivalent closure, which combines the advantages of the deep dermal (removing tension from the skin surface) and the superficial layer closure (wound edge approximation & eversion). The closure can be compared to the combination of the vertical mattress suture and the horizontal mattress suture closures.

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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

La présente divulgation concerne une agrafeuse chirurgicale (100) comprenant un corps d'agrafeuse (200). Une extrémité du corps d'agrafeuse est pourvue d'un réceptacle (203) pour recevoir une zone affectée (220) d'un échantillon. Une base circulaire (206) disposée à proximité du réceptacle (203) et, la base circulaire définit un trajet curviligne (202b) structuré pour guider une agrafe d'une pluralité d'agrafes (300) vers une extrémité de sortie (203b) définie dans le réceptacle. Un mécanisme d'entraînement (202) est structuré pour déplacer l'agrafe de la pluralité d'agrafes. Le mécanisme d'entraînement comprend un élément de transport (202a) conçu pour être déplacé entre une première position (A) et une seconde position (B) par rapport au trajet curviligne. Un actionneur (212) est couplé de manière fonctionnelle à l'élément de transport. Un module de déformation (204) est disposé à proximité d'une extrémité d'entrée (203a) du réceptacle et structuré pour déformer une partie de ladite agrafe.
PCT/IB2024/054332 2023-05-04 2024-05-03 Agrafeuse chirurgicale Pending WO2024228170A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202321031768 2023-05-04
IN202321031768 2023-05-04

Publications (1)

Publication Number Publication Date
WO2024228170A1 true WO2024228170A1 (fr) 2024-11-07

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Application Number Title Priority Date Filing Date
PCT/IB2024/054332 Pending WO2024228170A1 (fr) 2023-05-04 2024-05-03 Agrafeuse chirurgicale

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Country Link
WO (1) WO2024228170A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711288B4 (de) * 1997-03-18 2004-11-04 Helmut Dipl.-Ing. Wurster Applikator zum Aufnehmen und Schließen einer chirurgischen Klammer
US7810691B2 (en) * 2007-05-16 2010-10-12 The Invention Science Fund I, Llc Gentle touch surgical stapler
WO2014099704A2 (fr) * 2012-12-17 2014-06-26 Ethicon Endo-Surgery, Inc. Agrafeuse circulaire à entrée rotative entraînée par un moteur avec effecteur d'extrémité modulaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711288B4 (de) * 1997-03-18 2004-11-04 Helmut Dipl.-Ing. Wurster Applikator zum Aufnehmen und Schließen einer chirurgischen Klammer
US7810691B2 (en) * 2007-05-16 2010-10-12 The Invention Science Fund I, Llc Gentle touch surgical stapler
WO2014099704A2 (fr) * 2012-12-17 2014-06-26 Ethicon Endo-Surgery, Inc. Agrafeuse circulaire à entrée rotative entraînée par un moteur avec effecteur d'extrémité modulaire

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