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WO2023060583A1 - Mécanisme d'articulation pour dispositifs chirurgicaux - Google Patents

Mécanisme d'articulation pour dispositifs chirurgicaux Download PDF

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Publication number
WO2023060583A1
WO2023060583A1 PCT/CN2021/124179 CN2021124179W WO2023060583A1 WO 2023060583 A1 WO2023060583 A1 WO 2023060583A1 CN 2021124179 W CN2021124179 W CN 2021124179W WO 2023060583 A1 WO2023060583 A1 WO 2023060583A1
Authority
WO
WIPO (PCT)
Prior art keywords
articulation
gear
assembly
gear assembly
cover
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.)
Ceased
Application number
PCT/CN2021/124179
Other languages
English (en)
Inventor
Lan Chang
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.)
Covidien LP
Original Assignee
Covidien LP
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 Covidien LP filed Critical Covidien LP
Priority to PCT/CN2021/124179 priority Critical patent/WO2023060583A1/fr
Publication of WO2023060583A1 publication Critical patent/WO2023060583A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A61B17/068—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
    • A61B17/07207—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 the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft

Definitions

  • This disclosure is generally related to surgical devices for endoscopic use and, more particularly, to surgical devices including an articulation mechanism for articulating a tool assembly of the surgical device.
  • endoscopic devices During laparoscopic or endoscopic surgical procedures, access to a surgical site is achieved through a small incision or through a narrow cannula inserted through a small entrance wound in a patient. Because of limited area available to access the surgical site, many endoscopic devices include mechanisms for articulating the tool assembly of the device about a pivot axis in relation to a body portion of the surgical device.
  • an articulation mechanism for use with a surgical device includes an articulation cover, an articulation lever secured relative to the articulation cover, a first gear assembly operably received within the articulation cover and rotationally fixed relative to the articulation lever, and a second gear assembly operably supported relative to the first gear assembly.
  • the gear assembly includes a gear member.
  • the articulation mechanism further includes a yoke member operably supported relative to the first gear assembly and in operable engagement with the gear member, and an articulation linkage assembly in operable engagement with the yoke member. Rotation of the articulation lever in a first direction causes advancement of the articulation linkage assembly.
  • the articulation cover includes a base portion defining a first cavity, a collar portion defining a second cavity, and a flange portion defining an opening.
  • the first gear assembly includes a base portion, a spur gear portion, and a shaft portion. The base portion is received within the first cavity of the articulation cover, the spur gear portion is received within the second cavity of the articulation cover, and the shaft portion is received within the opening in the articulation cover.
  • the first gear assembly may define a first longitudinal axis and the second gear assembly may define a second longitudinal axis, wherein the first longitudinal axis is perpendicular to the second longitudinal axis.
  • the yoke member may include a substantially C-shaped body defining a plurality of spaced apart slots.
  • the gear member of the second gear assembly may include a worm gear portion, and the worm gear portion may be received within the plurality of spaced apart slots of the yoke member.
  • the base portion of the first gear assembly may have a frustoconical shape.
  • the base portion of the first gear assembly may include a toothed bottom surface.
  • the gear member of the second gear assembly may include a spur gear portion, and the toothed bottom surface of the first gear assembly may engage the spur gear portion of the gear member.
  • the second gear assembly may include a shaft member, and the gear member may be rotatably being supported on the shaft member.
  • the shaft member may include a flange portion and a shaft portion, and the gear member may be supported on the shaft portion. Rotation of the articulation mechanism in a second direction may cause retraction of the articulation linkage assembly.
  • the yoke member may define a third longitudinal axis, and the third longitudinal axis may be parallel to the second longitudinal axis.
  • the first gear assembly may include a bevel gear extension and the second gear assembly may include a bevel gear portion. Rotation of the bevel gear extension may cause corresponding rotation of the bevel gear portion.
  • a handle assembly includes a stationary handgrip, a firing trigger movable in relation to the stationary handgrip, and a rotation knob assembly rotatably secured relative to the stationary handgrip.
  • the rotation knob assembly includes a first housing section, a second housing section secured to the first housing section, and an articulation mechanism supported by the first and second housing sections.
  • the articulation mechanism includes an articulation cover, an articulation lever secured relative to the articulation cover, a first gear assembly operably received within the articulation cover and rotationally fixed relative to the articulation lever, and a second gear assembly operably supported relative to the first gear assembly.
  • the second gear assembly includes a gear member.
  • the articulation mechanism further includes a yoke member operably supported relative to the gear assembly and in operable engagement with the gear member, and an articulation linkage assembly in operable engagement with the yoke member. Rotation of the articulation lever in a first direction causes advancement of the articulation linkage assembly.
  • the articulation cover may include a base portion defining a first cavity, a collar portion defining a second cavity, and a flange portion defining an opening.
  • the first gear assembly may include a base portion, a spur gear portion, and a shaft portion. The base portion may be received within the first cavity of the articulation cover, the spur gear portion may be received within the second cavity of the articulation cover, and the shaft portion may be received within the opening in the articulation cover.
  • the first gear assembly may define a first longitudinal axis and the gear member may define a second longitudinal axis, and the first longitudinal axis may be perpendicular to the second longitudinal axis.
  • a surgical stapling device includes a handle assembly including a stationary handgrip, a firing trigger movable in relation to the stationary handgrip, an elongate body extending from the stationary handgrip, and a rotation knob assembly rotatably securing the elongate body relative to the stationary handgrip.
  • the rotation knob assembly includes a first housing section, a second housing section secured to the first housing section, and an articulation mechanism supported by the first and second housing sections.
  • the articulation mechanism includes an articulation cover, an articulation lever secured relative to the articulation cover, a first gear assembly operably received within the articulation cover and rotationally fixed relative to the articulation lever, and a second gear assembly operably supported relative to the first gear assembly.
  • the second gear assembly includes a gear member.
  • the articulation mechanism further includes a yoke member operably supported relative to the gear assembly and in operable engagement with the gear member, and an articulation linkage assembly in operable engagement with the yoke member. Rotation of the articulation lever in a first direction causes advancement of the articulation linkage assembly.
  • the surgical stapling device further includes a tool assembly secured to the elongate body.
  • FIG. 1 is a perspective view of a surgical device in accordance with aspects of the disclosure
  • FIG. 2 is an enlarged view of the indicated area of detail shown in FIG. 1;
  • FIG. 3 is a top view of portions of an articulation mechanism of the surgical device shown in FIG. 1 with an elongate body, a rotation knob, and a tool assembly of the surgical device shown in phantom;
  • FIG. 4 is a side perspective view of the articulation mechanism shown in FIG. 3 with the rotation knob of the elongate body shown in phantom;
  • FIG. 5 is side perspective view of the articulation mechanism and the rotation knob of the surgical device shown in FIG. 1, with parts separated;
  • FIG. 6 is a cross-sectional view taken along section line 6-6 shown in FIG. 4;
  • FIG. 7 is a cross-sectional view taken along section line 7-7 shown in FIG. 6;
  • FIG. 8 is a cross-sectional view taken along section line 8-8 shown in FIG. 6;
  • FIG. 9 is a side perspective view of the articulation mechanism shown in FIG. 5, during operation;
  • FIG. 10 is the top view of the articulation mechanism, the elongate body, and the tool assembly of the surgical device shown in FIG. 3, during articulation of the tool assembly;
  • FIG. 11 is a side perspective view of an articulation mechanism according to other aspects of the disclosure with a rotation knob assembly shown in phantom;
  • FIG. 12 is a perspective view of the articulation mechanism shown in FIG. 11, with parts separated;
  • FIG. 13 is a cross-sectional view taken along section line 13-13 shown in FIG. 11.
  • distal refers to that portion of the surgical device, or component thereof, that is farther from the user during use of the device in its customary fashion
  • proximal refers to that portion of the surgical device, or component thereof, that is closer to the user during use of the device in its customary fashion
  • clinical refers to anyone involved in a surgical procedure, including but not limited to, surgeons, support staff, and other medical personnel.
  • substantially means that the numerical value is approximate and small variations would not significantly affect the practice of the surgical instruments. Where a numerical limitation is used, unless indicated otherwise by the context, "about” means the numerical value can vary by ⁇ 10%and remain within the scope of the disclosure.
  • FIG. 1 illustrates a surgical stapling device 10 including a handle assembly 12, an elongate body or adapter 14 supported on the handle assembly 12, and a loading unit 16 supported on the elongate body 14.
  • the loading unit 16 includes a body portion 16a and a tool assembly 16b that is configured to articulate relative to the body portion 16a.
  • the tool assembly 16b is configured for stapling and incising tissue, however, it is envisioned that the aspects of the disclosure may be modified for use with other articulating end effectors, including, for example, graspers, vessels sealers, and clip appliers.
  • the handle assembly 12 of the surgical stapling device 10 is manually actuated and includes a stationary handgrip 18, a firing trigger 20 movable in relation to the stationary handgrip 18 to actuate various functions of the tool assembly 16b, and a retraction lever 22.
  • Exemplary manual surgical stapling devices are disclosed in U.S. Patent No. 6,238,908.
  • the aspects of the disclosure may be modified for use in electrically powered stapling devices including electrically powered handle assemblies, such as disclosed in U.S. Patent Nos. 9,055,943 and 9,023,014, or for use with robotic systems, such as disclosed in U.S. Patent No. 9,962,159.
  • FIGS. 2 and 3 illustrate a rotation knob assembly 24 disposed on a proximal portion 14a of the elongate body 14 that connects the elongate body 14 to the handle assembly 12.
  • the rotation knob assembly 24 is secured to the elongate body 14 and rotatably coupled to the handle assembly 12 to permit rotation of the elongate body 14 and the loading unit 16 about a longitudinal axis "x" defined by the elongate body 14 relative the handle assembly 12.
  • the rotation knob assembly 24 includes upper and lower housing sections 24a, 24b.
  • the upper housing section 24a defines an opening 23 (FIG. 5)
  • the upper and lower housing sections 24a, 24b define a longitudinal passage 25 (FIG. 4) that communicates with the opening 23.
  • the rotation knob assembly 24 supports an articulation mechanism 100 that is configured for effecting articulation of the tool assembly 16b (FIG. 1) relative to the elongate body 14 of the surgical stapling device 10.
  • FIGS. 4 and 5 illustrate the rotation knob assembly 24 and the articulation mechanism 100 of the surgical stapling device 10.
  • the articulation assembly 100 includes an articulation lever 110, an articulation cover 120, a first gear assembly 130, a second gear assembly 140, a yoke member 160, and an articulation linkage assembly 170.
  • the articulation mechanism 100 of the surgical stapling device 10 provides for stepless articulation, has a low articulation force during articulation, and has a sufficient de-articulation force to maintain the tool assembly 16b in a desired articulated position during firing.
  • the articulation lever 110 of the articulation mechanism 100 includes first and second lever sections 112, 114 (FIG. 5) . As shown, the first and second lever sections 112, 114 are secured to one another by a pair of tabs 116. Alternately, it is envisioned that the first and second lever sections 112, 114 of the articulation lever 110 may be secured to one another in any suitable manner.
  • the first and second lever sections 112, 114 of the articulation lever 110 define a first recess 113 (FIG. 5) having a smooth inner surface 113a (FIG. 5) and a second recess 115 formed by a toothed inner surface 115a.
  • the articulation lever 110 is configured for operable engagement by a clinician to effect articulation of the tool assembly 16b (FIG. 1) relative to the elongate body 14.
  • the articulation cover 120 of the articulation mechanism 100 includes a base portion 122, a collar portion 124 extending from the base portion 122, and a flange portion 126 extending from the collar portion 124.
  • the base portion 122 of the articulation cover 120 is supported within the opening 23 in the upper housing section 24a of the rotation knob assembly 24.
  • the base portion 122 of the articulation cover 120 defines a first cavity 121 (FIG. 6)
  • the collar portion 124 of the articulation cover 120 defines a second cavity 123 (FIG. 8) that is in communication with the first cavity 121.
  • the flange portion 126 of the articulation cover 120 defines an opening 125 that is in communication with each of the first and second cavities 121, 123.
  • the articulation cover 120 of the articulation mechanism 100 is secured within the opening 23 (FIG. 6) of the rotation knob assembly 24 in any suitable manner.
  • the articulation lever 110 of the articulation mechanism 100 is secured about the flange portion 126 of the articulation cover 120 such that the flange portion 126 is received within the first recess 113 in the articulation lever 110.
  • the collar portion 124 of the articulation cover 120 is received within the second recess 115 in the articulation lever 110.
  • the first gear assembly 130 of the articulation mechanism 100 defines a longitudinal axis “y” that extends perpendicular to the longitudinal axis “x” (FIG. 5) of the elongate body 14 of the surgical stapling device 10.
  • the first gear assembly 130 includes a base portion 132, a spur gear portion 134 extending from the base portion 132, and a shaft portion 136 extending from the spur gear portion 134.
  • the base portion 132 of the first gear assembly 130 has a frustoconical shape and is disposed within the first cavity 121 of the articulation cover 120.
  • the base portion 132 of the first gear assembly 130 includes a toothed bottom surface 133.
  • the spur gear portion 134 of the first gear assembly 130 is disposed within the second cavity 123 of the articulation cover 120 and engages the toothed inner surface 115a of the articulation lever 110 forming the second recess 115.
  • the shaft portion 136 of the first gear assembly 130 extends through the opening 125 in the flange portion 126 of the articulation cover 120 and defines an annular groove 137 that receives a locking clip 138.
  • Each of the first and second cavities 121, 123 and the opening 125 in the articulation cover 120 are concentric.
  • the base portion 132 of the first gear assembly 130 is disposed within the first cavity 121 of the articulation cover 120, the spur gear portion 134 of the first gear assembly 130 is disposed within the second cavity 123 of the articulation cover 120, and the shaft portion 136 of the first gear assembly 130 extends through the opening 125 in the articulation cover 120.
  • the articulation cover 120 is secured relative to the first gear assembly 130 by the locking clip 138 received in the annular groove 137 in the shaft portion 136.
  • the spur gear portion 134 of the first gear assembly 130 engages the toothed inner surface 115a of the articulation lever 110 such that pivoting of the articulation lever 110 causes rotation of the first gear assembly 130.
  • the second gear assembly 140 of the articulation mechanism 100 includes a shaft member 142 and a gear member 144 rotatably received on the shaft member 142.
  • the shaft member 142 includes a flange portion 146 and a shaft portion 148.
  • the flange portion 146 of the shaft member 142 defines an opening 145 for receiving a screw 143.
  • the shaft portion 148 of the shaft member 142 supports the gear member 144 and includes an annular groove 147 that receives a locking clip 149.
  • the gear member 144 of the second gear assembly 140 is supported on the shaft portion 148 of the shaft member 142 and includes a worm gear portion 150 and a spur gear portion 152 that extends from the worm gear portion 150.
  • the second gear assembly 140 of the articulation mechanism 100 is disposed within the rotation knob assembly 24 such that the spur gear portion 152 of the gear member 144 engages the toothed bottom surface 133 of the base portion 132 of the first gear assembly 130 and the worm gear portion 150 of the gear member 144 engages the yoke member 160. More particularly, the flange portion 146 of the shaft member 142 of the second gear assembly 140 is secured to the upper housing section 24a of the rotation knob assembly 24 with the screw 143, or in any other suitable manner, and the gear member 144 is rotatably supported on the shaft portion 148 of the shaft member 142. The gear member 144 is secured relative to the shaft member 142 by the locking clip 149. As will be described in further detail below, rotation of the first gear assembly 130 about the longitudinal axis “y” of the first gear assembly 130 causes corresponding rotation of gear member 144 of the second gear assembly 140.
  • the yoke member 160 of the articulation lever 100 includes an elongate body 162 having a substantially C-shape, and a flange 164 extending distally from the elongate body 162.
  • the elongate body 162 of the yoke member 160 defines a plurality of spaced apart slots 163.
  • the plurality of spaced apart slots 163 engage the worm gear portion 148 of the gear member 144 of the second gear assembly 140 during operation of the articulation mechanism 100 to cause longitudinal movement of the yoke member 160 along the longitudinal axis “x” of the elongate body 14 of the surgical stapling device 10.
  • the yoke member 160 of the articulation mechanism 100 is slidably disposed within the rotation knob assembly 24 and is movable from a first position (FIG. 6) to a second position (FIG. 9) corresponding to rotation of the gear member 144 of the second gear assembly 140.
  • the worm gear portion 150 of the gear member 144 of the second gear assembly 140 engages the yoke member 160 along the plurality of spaced apart slots 163 such that rotation of the gear member 144 in a first rotational direction about a longitudinal axis “z” of the shaft member 142 causes the yoke member 160 to move in a first longitudinal direction and rotation of the gear member 144 in a second rotational direction about the longitudinal axis “z” of the shaft member 142 causes the yoke member 160 to move in a second longitudinal direction.
  • the articulation linkage assembly 170 of the articulation mechanism 100 includes a first linkage 172 and a second linkage 174 (FIG. 3) . Although shown including two linkages, it is envisioned that the articulation linkage assembly 170 may include more than two linkages.
  • the first articulation linkage 172 of the articulation linkage assembly 170 of the articulation mechanism 100 engages the flange 164 extending from the elongate body 162 of the yoke member 160. Longitudinal movement of the yoke member 160 causes corresponding longitudinal movement of the first articulation linkage 172 of the articulation linkage assembly 170.
  • the first articulation linkage 172 is secured to the second articulation linkage 174 in any suitable manner, and the second articulation linkage 174 is secured to the tool assembly 16b in any suitable manner.
  • FIGS. 6-8 illustrate the articulation mechanism 100 of the surgical stapling device 10 in a first or initial condition.
  • the tool assembly 16b is aligned with the longitudinal axis “x” of the elongate body 14 of the surgical stapling device 10.
  • the articulation lever 110 of the articulation mechanism 100 is aligned with the elongate body 14 to indicate to the user that the tool assembly 16b is in the aligned or non-articulated position.
  • FIGS. 9 and 10 illustrate articulation of the tool assembly 16b (FIG. 10) of the surgical stapling device 10 relative the elongate body 14 of the surgical stapling device 10 in a first direction, as indicated by arrow “A” in FIG. 10.
  • Articulation of the tool assembly 16b in the first direction is effected by rotation of the articulation lever 110 of the articulation mechanism 100 about the longitudinal axis “y” of the first gear assembly 130 in the same first direction, as indicated by arrow “B” .
  • a clinician is able to determine the position of the tool assembly 16b relative to the elongate body 14 without viewing the tool assembly 16b.
  • rotation of the articulation lever 110 in the first direction causes corresponding rotation of the first gear assembly 130, as indicated by arrow “C” , which causes corresponding rotation of the gear member 144 of the second gear assembly 140 about the longitudinal axis “z” of the shaft member 142 of the second gear assembly 140, as indicated by arrow “D” in FIG. 9.
  • the rotation of the gear member 144 of the second gear assembly 140 causes longitudinal translation of the yoke member 160 in a proximal direction, i.e., retracted, as indicated by arrow “E” .
  • the first and second linkages 172, 174 of the linkage assembly 170 are moved in the proximal direction, i.e., retracted, as indicated by arrows “F” in FIG. 10.
  • Rotation of the articulation lever 110 in a second direction opposite to the first direction causes the first and second linkages 172, 174 of the articulation linkage assembly 170 to move in a proximal direction, i.e., advance.
  • the tool assembly 16b in an articulated condition may be moved back into alignment with the elongate body 14 of the surgical stapling device 10 or the tool assembly 16b may be articulated in the second, opposite direction relative to the elongate body 14.
  • the configuration of the articulation mechanism 100 is such that movement of the tool assembly 16b during articulation is smooth, e.g., stepless articulation.
  • the configuration of the articulation mechanism 100 also provides for a low articulation force and provides sufficient de-articulation force to maintain the tool assembly 16b in a desired position during firing.
  • FIGS. 11 and 12 illustrate an articulation mechanism according to other aspects of the disclosure, shown generally as articulation mechanism 200.
  • the articulation mechanism 200 is substantially similar to articulation mechanism 200 described hereinabove and will only be described in detail as relates to the differences therebetween.
  • the articulation mechanism 200 is operably supported within a rotation knob assembly 24’ and includes an articulation lever 210, an articulation cover 220, a first gear assembly 230, a second gear assembly 250, a yoke member 270, and an articulation linkage assembly 280.
  • the articulation lever 210 and articulation cover 220 of the articulation mechanism 200 are substantially similar to the articulation lever 110 and the articulation cover 120 of the articulation mechanism 100 described above.
  • the articulation cover 220 is secured to an upper housing section 24a’ of the rotation knob assembly 24’ and the articulation lever 210 is secured to the articulation cover 220.
  • the first gear assembly 230 is supported within the articulation cover 220 and includes a housing 232, a first gear member 234 and a second gear member 236.
  • the housing 232 includes a first shaft 238 that defines a first longitudinal axis “a” and a second shaft 240 that defines a second longitudinal axis “b” disposed parallel to the first longitudinal axis “a” .
  • the housing 232 defines a cavity 231 that receives the second gear assembly 250.
  • the first gear member 234 includes a spur gear portion 242 and a spur gear extension 244.
  • the spur gear portion 242 and the spur gear extension 244 are rotatably supported on the first shaft 238.
  • the spur gear extension 244 engages the toothed inner surface 215a of the articulation lever 210 to permit rotation of the first gear member 234 about the first shaft 238.
  • the second gear member 236 of the first gear assembly 230 includes a bevel gear portion 246 and a spur gear extension 248.
  • the bevel gear portion 246 and the spur gear extension 248 are rotatably supported on the second shaft 240.
  • the spur gear portion 242 and the spur gear extension 244 of the first gear member 234, and/or the bevel gear portion 246 and the spur gear extension 248 of the second gear member 236 may be integrally formed, e.g., monolithic.
  • the spur gear extension 248 of the second gear member 236 engages the spur gear portion 242 of the first gear member 234 to permit rotation of the second gear member 236 about the second shaft 240.
  • the second gear assembly 250 of the articulation mechanism 200 includes a shaft member 252, a gear member 254 supported on the shaft member 252, and a bearing member 256 that maintains the gear member 254 on the shaft member 252.
  • the gear member 254 of the second gear assembly 250 includes a worm gear portion 258 and a bevel gear extension 260. Although shown as separate components, it is envisioned that the worm gear portion 258 and the spur gear extensions 260 may be integrally formed, e.g., monolithic.
  • the bevel gear extension 260 of the gear member 254 of the second gear assembly 250 engages the bevel gear portion 246 of the second gear member 236 of the first gear assembly 230.
  • the yoke member 270 and the articulation linkage assembly 280 are substantially similarly to the yoke member 160 and the articulation linkage assembly 170 described above.
  • the worm gear portion 258 of the gear member 254 of the second gear assembly 250 engages the yoke member 270 in the same manner as the worm gear portion 148 of the gear member 144 of the second gear assembly 140 of the articulation mechanism 100 engages the yoke member 100 during operation of the articulation mechanism 100 to cause articulation of the tool assembly 16b.

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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

Mécanisme d'articulation (100) destiné à être utilisé avec un dispositif d'agrafage chirurgical (10) comprenant un capot d'articulation (120), un levier d'articulation (110) fixé au capot d'articulation (120), un premier engrenage (130) fonctionnellement reçu à l'intérieur du capot d'articulation (120) et fixé en rotation par rapport au levier d'articulation (110), et un second engrenage (140) fonctionnellement supporté par rapport au premier engrenage (130). Le second engrenage (140) comprend un élément d'engrenage (144). Le mécanisme d'articulation (100) comprend en outre un étrier (160) fonctionnellement supporté par rapport au premier engrenage (130) et en prise fonctionnelle avec l'élément d'engrenage (144), et un ensemble tringlerie d'articulation 170 en prise fonctionnelle avec l'étrier 160. La rotation du levier d'articulation (110) dans une première direction provoque l'avancement de l'ensemble tringlerie d'articulation (170).
PCT/CN2021/124179 2021-10-15 2021-10-15 Mécanisme d'articulation pour dispositifs chirurgicaux Ceased WO2023060583A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2021/124179 WO2023060583A1 (fr) 2021-10-15 2021-10-15 Mécanisme d'articulation pour dispositifs chirurgicaux

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Application Number Priority Date Filing Date Title
PCT/CN2021/124179 WO2023060583A1 (fr) 2021-10-15 2021-10-15 Mécanisme d'articulation pour dispositifs chirurgicaux

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WO2023060583A1 true WO2023060583A1 (fr) 2023-04-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050006434A1 (en) * 2003-07-09 2005-01-13 Wales Kenneth S. Surgical instrument incorporating an articulation mechanism having rotation about the longitudinal axis
US20080223903A1 (en) * 2007-03-15 2008-09-18 Stanislaw Marczyk Surgical stapling apparatus with powered articulation
US20080287977A1 (en) * 2007-05-17 2008-11-20 Viola Frank J Gear driven knife drive mechanism
US20130292448A1 (en) * 2012-05-07 2013-11-07 Covidien Lp Surgical Instrument with Articulation Mechanism
US20150053737A1 (en) * 2013-08-23 2015-02-26 Ethicon Endo-Surgery, Inc. End effector detection systems for surgical instruments
US20170281220A1 (en) * 2016-04-04 2017-10-05 Ethicon Endo-Surgery, Llc Surgical instrument with selectively locked articulation assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050006434A1 (en) * 2003-07-09 2005-01-13 Wales Kenneth S. Surgical instrument incorporating an articulation mechanism having rotation about the longitudinal axis
US20080223903A1 (en) * 2007-03-15 2008-09-18 Stanislaw Marczyk Surgical stapling apparatus with powered articulation
US20080287977A1 (en) * 2007-05-17 2008-11-20 Viola Frank J Gear driven knife drive mechanism
US20130292448A1 (en) * 2012-05-07 2013-11-07 Covidien Lp Surgical Instrument with Articulation Mechanism
US20150053737A1 (en) * 2013-08-23 2015-02-26 Ethicon Endo-Surgery, Inc. End effector detection systems for surgical instruments
US20170281220A1 (en) * 2016-04-04 2017-10-05 Ethicon Endo-Surgery, Llc Surgical instrument with selectively locked articulation assembly

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