Patents by Inventor Joseph Guerrera

Joseph Guerrera has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10342534
    Abstract: A surgical stapling device includes reload assembly that is supported on a distal portion of an elongate shaft of the surgical stapling device. The reload includes a housing, a pusher assembly movably supported within the housing, a knife carrier movably supported within the pusher assembly, and an annular knife supported on the knife carrier. The elongate body includes a pusher drive member and a knife carrier pusher. The knife carrier includes first engagement structure that is configured to releasably engage second engagement structure formed on the knife carrier pusher to releasably couple the knife carrier pusher to the knife carrier. The knife carrier supports at least one detent that is movable into contact with a distal portion of the pusher drive member as the knife carrier is retracted to urge the first engagement structure out of engagement with the second engagement structure to uncouple the knife carrier from the knife carrier pusher.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 9, 2019
    Assignee: Covidien LP
    Inventors: Justin Williams, Joseph Guerrera, David Valentine
  • Publication number: 20190059901
    Abstract: A surgical stapling device includes an anvil assembly and a shell assembly. The anvil and shell assemblies each include splines that define guide channels. Each of the anvil splines defines a distally positioned triangular tip that is defined by an apex and first and second right cam surfaces. The cam surfaces of the anvil splines are configured to engage one of the shell splines to cam or rotate the anvil assembly into alignment with the shell assembly as the anvil assembly is moved in relation to the shell assembly to a clamped position. The apex of each of the anvil splines is offset from a longitudinal axis of the anvil spline such that the first and second cam surfaces of the anvil splines define a short edge and a long edge and have surfaces that have different surface areas. By providing anvil splines that have cam surfaces with different surface areas, a greater force is applied to the cam surface having a greater surface area when the apexes of the anvil and shell splines “crash”.
    Type: Application
    Filed: July 17, 2018
    Publication date: February 28, 2019
    Inventors: Joseph Guerrera, Charles Kollar
  • Publication number: 20180317920
    Abstract: A surgical instrument includes a shell assembly and an adapter. The shell assembly includes a shell housing, a plurality of staples, a staple pusher configured to eject the plurality of staples from the shell housing, a staple actuator configured to engage the staple pusher, a knife member, and a knife carrier supporting the knife member. The adapter includes a staple band operatively coupled to an actuation mechanism for axial displacement, a knife band at least partially received within the staple band, and a cam ring rotatably supported about the knife band. The staple band is configured to releasably engage the staple actuator. The knife band is operatively coupled with an actuation mechanism for axial displacement. The cam ring is rotatable between an engaged position in which the knife carrier engages the cam ring for concomitant axial displacement with the knife band and a disengaged position in which the knife carrier is disengaged from the cam ring.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 8, 2018
    Inventors: Joseph Guerrera, Anthony Sgroi, JR., Patrick Mozdzierz
  • Publication number: 20180271524
    Abstract: A surgical stapling device includes reload assembly that is supported on a distal portion of an elongate shaft of the surgical stapling device. The reload includes a housing, a pusher assembly movably supported within the housing, a knife carrier movably supported within the pusher assembly, and an annular knife supported on the knife carrier. The elongate body includes a pusher drive member and a knife carrier pusher. The knife carrier includes first engagement structure that is configured to releasably engage second engagement structure formed on the knife carrier pusher to releasably couple the knife carrier pusher to the knife carrier. The knife carrier supports at least one detent that is movable into contact with a distal portion of the pusher drive member as the knife carrier is retracted to urge the first engagement structure out of engagement with the second engagement structure to uncouple the knife carrier from the knife carrier pusher.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Inventors: Justin Williams, Joseph Guerrera, David Valentine
  • Publication number: 20180242974
    Abstract: A tool assembly includes a cartridge assembly, a shell, and an anvil assembly. The shell houses the cartridge assembly and defines a passage. The anvil assembly includes an anvil and a center rod extending from the anvil. The center rod defines a longitudinal rod axis and includes an alignment portion that is sized to pass through the passage. The alignment portion includes first and second splines that each extend in a direction parallel to the rod axis. The first spline has a first leading portion and the second spline has a second leading portion. The first leading portion is positioned along the rod axis proximal of the second leading portion.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 30, 2018
    Inventors: Joseph Guerrera, Patrick Mozdzierz
  • Publication number: 20180242973
    Abstract: A tool assembly includes a cartridge assembly, a shell, and an anvil assembly. The shell houses the cartridge assembly and defines a passage. The shell includes alignment splines that are disposed within the passage and define channels between adjacent alignment splines. The anvil assembly includes an anvil and a center rod that extends from the anvil. The center rod defines a longitudinal axis and includes a first spline and second splines. The first spline includes a first leading facet that is configured to engage the alignment splines to clock the anvil assembly relative to the cartridge assembly. The second splines are radially spaced apart about the longitudinal axis. Each of the second splines includes a leading end that defines a plane that is substantially orthogonal to the longitudinal axis. The leading end is configured to crash with the alignments spines when the anvil assembly is misaligned with the cartridge assembly.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 30, 2018
    Inventors: Joseph Guerrera, David Valentine
  • Publication number: 20180233850
    Abstract: An improved chip assembly for use in a stapling device includes a housing assembly receivable within a reload assembly. The housing assembly includes a base member defining a cavity and an identification assembly received within the cavity. The chip assembly further includes a plug assembly configured to selectively engage the base member. The plug assembly includes a housing, a wire extending from the housing, a seal member disposed within and extending from a distal end of the housing, and first and second contact members extending through the seal member and from the housing. The seal member is configured to be frictionally received within the base member to secure the plug assembly to the housing assembly in a fluid tight manner.
    Type: Application
    Filed: March 13, 2018
    Publication date: August 16, 2018
    Inventors: Christopher Penna, Anthony Sgroi, JR., Charlie Kollar, David Valentine, Justin Williams, Patrick Mozdzierz, Stephen Paul, Ramiro Cabrera, Steven Joyce, Joseph Guerrera
  • Publication number: 20180206846
    Abstract: A surgical stapler includes an anvil assembly including an anvil head assembly pivotally secured to an anvil center rod. The anvil head assembly includes a housing having a post and a cut ring assembly supported about the post and movable between retracted and advanced positions. A cut ring retainer is positioned about the post and movable between a retracted position in which the cut ring retainer retains the cut ring assembly in its retracted position and an advanced position to permit movement of the cut ring assembly to its advanced position. In its retracted position, the cut ring retainer can be received in a retainer slot formed about the post. The cut ring retainer can be ring shaped and/or formed of a resilient material to facilitate movement of the cut ring retainer into and out of the retainer slot.
    Type: Application
    Filed: December 20, 2017
    Publication date: July 26, 2018
    Inventor: Joseph Guerrera
  • Publication number: 20180125486
    Abstract: A circular surgical stapling device includes a reload assembly that is supported on a distal end of an elongate shaft of the stapling device. The reload assembly includes a housing, a pusher assembly movably supported within the housing, a knife carrier movably supported within the pusher assembly, and an annular knife supported on the knife carrier. The elongate body includes a pusher drive member and a knife carrier pusher. The knife carrier includes first engagement structure that is configured to releasably engage second engagement structure formed on the knife carrier pusher to releasably couple the knife carrier pusher to the knife carrier. A reload insert or member is supported on or integrally formed with the housing of the reload assembly. The reload member includes a first portion configured to prevent separation of the first and second engagement structures and a second portion configured to accommodate separation of the first and second engagement structures.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 10, 2018
    Inventor: Joseph Guerrera
  • Patent number: 5125605
    Abstract: A trash bag holding bracket device which has a frame, which is preferably of a rectangular shape and which, preferably, includes means for the adjustability of the shape of such frame is disclosed. Attachment, in either a removable or fixed manner, is achieved by a plurality of clips, preferably located at points along the frame wherein such clips can adequately support the frame of the invention within the dimensions of the trash basket being used. The plurality of clips are to engage the upper rim of the trash basket in a manner wherein the clips surround the upper rim of the basket. Preferably, the clips are also shaped in a manner in which their shape reinforces the securement of the clips to the top portion of the basket.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: June 30, 1992
    Inventor: Joseph Guerrera
  • Patent number: 4934637
    Abstract: A trash bag holding bracket device which has a frame, which is preferably of a rectangular shape and which, preferably, includes means for the adjustability of the shape of such frame is disclosed. Attachment, in either a removable or fixed manner, is achieved by a plurality of clips, preferably located at points along the frame wherein such clips can adequately support the frame of the invention within the dimensions of the trash basket being used. The plurality of clips are to engage the upper rim of the trash basket in a manner wherein the clips surround the upper rim of the basket. Preferably, the clips are also shaped in a manner in which their shape reinforces the securement of the clips to the top portion of the basket.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: June 19, 1990
    Inventor: Joseph Guerrera