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WO2010025090A1 - Dispositif et système de récupération de tissus et d’objets - Google Patents

Dispositif et système de récupération de tissus et d’objets Download PDF

Info

Publication number
WO2010025090A1
WO2010025090A1 PCT/US2009/054599 US2009054599W WO2010025090A1 WO 2010025090 A1 WO2010025090 A1 WO 2010025090A1 US 2009054599 W US2009054599 W US 2009054599W WO 2010025090 A1 WO2010025090 A1 WO 2010025090A1
Authority
WO
WIPO (PCT)
Prior art keywords
trap
movable
actuation assembly
fixed
shaft
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/US2009/054599
Other languages
English (en)
Inventor
Judson A. Herrig
Manoj Monga
Arthur G. Erdman
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.)
University of Minnesota Twin Cities
University of Minnesota System
Original Assignee
University of Minnesota Twin Cities
University of Minnesota System
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 University of Minnesota Twin Cities, University of Minnesota System filed Critical University of Minnesota Twin Cities
Publication of WO2010025090A1 publication Critical patent/WO2010025090A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
    • 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
    • A61B2017/2932—Transmission of forces to jaw members
    • A61B2017/2939—Details of linkages or pivot points

Definitions

  • the actuation assembly is structured to comprise three points of pivotal movement between a tension line and the hinged portion of the trap elements, and wherein the three pivotal points are in addition to the hinged coupling between the trap elements.
  • the three pivotal points of the actuation assembly function in relation to two pairs of components - a pair of rocking elements and a pair of linking elements - each member of the pair of rocking elements and each member of the pair of linking elements being located on opposite sides of the elongated shaft.
  • each member of a first pair of rocking elements can comprise two legs in angular relation to one another and can be hingedly coupled at the vertex between said legs to the recessed portion of the shaft.
  • One leg of each rocking element can be indirectly and pivotally coupled via a linking element to the hinged region of the movable trap element, one end of the linking element being pivotally coupled to one leg of the rocking element, and further pivotally coupled at its other end to the hinged region of the movable trap element through an additional hinge that is separate and distinct from the hinged coupling shared by both trap elements.
  • each of the rocking element components can have an overall planar or plate configuration having the same pivot and articulating points present as needed for the operation of the actuation assembly.
  • movement of the tension line in the proximal direction causes movable trap element to pivot forward in the distal direction so as to ultimately place the open cavity of the movable trap element in opposition to the open cavity of the fixed trap element, and in corresponding alignment, forming an encased chamber.
  • this motion can contact, engage, sever, excise, and/or capture a tissue within the encased chamber.
  • the tissue sample is contained and resides within the chamber throughout the withdrawal of the device from the tissue site.
  • the sheath is positioned between an external operating mechanism at its proximal end and the device at the distal portion of the sheath such that the tension line of the device resides within the sheath lumen.
  • the distal portion of the device can reside within the distal portion of the lumen when the device is in initial non-actuated state, and the distal portion of the device can be extended beyond the distal end of the sheath and lumen in situ prior to tissue engagement.
  • system of the invention can be employed by itself as an independent instrument in combination with, for instance, an access portal, or alternatively in accompaniment to a secondary cannula that is part of a surgical instrument, for instance a ureteroscope.
  • Figure 2 A is an angled side view of the distal region of the device shown in the first retracted non-actuated state according to one embodiment of the invention.
  • Figure 5 is a close-up angled side view of a section of the device showing the hinged structures of the device including the actuation assembly according to one embodiment of the invention.
  • Figure 6 is an exploded view of the assembly showing individual components parts in separated state according to one embodiment of the invention.
  • Figure 8 is an angled view of a single rocking element of the actuation assembly according to one embodiment of the invention.
  • trap element designs can be used with the invention and can be modified to perform specifically contemplated procedures and/or objectives.
  • shape and size of the trap elements their structure can vary as well.
  • the trap elements can be in the form of a cage or basket (not shown).
  • One of more of the trap elements can comprise perforations through the trap wall, or openings or windows in the trap wall aside from the cavity opening.
  • the actuation assembly 50 is described and illustrated as an angular and two-legged 1 V rocking element configuration having two pivot points and an articulating connection to the legs of a 'U' bracket
  • the structurally essential arrangement associated with the rocking element(s) component of the actuation assembly resides in the articulating triad arrangement wherein a pivot point can effectuate a 'rocking' motion of the rocking element relative to, and about, a fixed position on the shaft (e.g., a hinge structure on the recessed bridge portion).
  • a pivot point can effectuate a 'rocking' motion of the rocking element relative to, and about, a fixed position on the shaft (e.g., a hinge structure on the recessed bridge portion).
  • the device of the invention can further comprise a tension line 60 running along the longitudinal axis # of the shaft 10 and which functions to transfer operational force exerted by the user or operator at the proximal end of the device (not shown), by way of linear movement of the tension line 60 in a longitudinal direction, to the actuation assembly 50 at the distal region 11 of the device.
  • the tension line 60 thus mechanically connects, directly or indirectly, the proximal end actuation or operative mechanism (not shown) of the device to the actuation assembly 50.
  • the tension line 60 can reside within, and is bi-directionally and longitudinally movable within, a shaft lumen (not shown).
  • the invention affords a tool movement (movable element relative to fixed element) over an approximate 180 degree (hinged) pathway in alignment with the longitudinal axis of the shaft of the device.
  • the device of the invention, and actuation assembly can be constructed to conduct a movement as described slightly greater than 180 degrees, and less than 180 degrees.
  • the full advantages associated with the invention can be realized with a construction wherein the tool has a linear resting state configuration, which permits minimal cross-sectional diameter design and minimally invasive access to the target site.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biodiversity & Conservation Biology (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 invention est relative à un dispositif de récupération de tissus et/ou d’objets conçu pour être utilisé avec des procédures médicales minimalement invasives. Grâce à sa conception et à son fonctionnement, le dispositif selon l’invention peut obtenir une quantité relativement grande de tissu (ou d’objet) tout en réduisant ou en minimisant le degré de traumatisme du patient. Le dispositif selon l’invention conserve en outre des dimensions réduites ou minimales pendant les étapes d’insertion et d’accès et dispose d’une plus grande liberté de mouvement dans l’environnement du lieu de récupération. L’invention fournit en outre un système comprenant le dispositif en combinaison avec un composant de gaine allongé. L’invention peut être utilisée comme une partie ou en conjonction avec d’autres dispositifs chirurgicaux minimalement invasifs.
PCT/US2009/054599 2008-08-25 2009-08-21 Dispositif et système de récupération de tissus et d’objets Ceased WO2010025090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18997908P 2008-08-25 2008-08-25
US61/189,979 2008-08-25

Publications (1)

Publication Number Publication Date
WO2010025090A1 true WO2010025090A1 (fr) 2010-03-04

Family

ID=41721848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/054599 Ceased WO2010025090A1 (fr) 2008-08-25 2009-08-21 Dispositif et système de récupération de tissus et d’objets

Country Status (1)

Country Link
WO (1) WO2010025090A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142957A (en) * 1993-09-20 2000-11-07 Boston Scientific Corporation Multiple biopsy sampling device
US20080015466A1 (en) * 2006-07-13 2008-01-17 Mayo Foundation For Medical Education And Research Obtaining a tissue sample

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142957A (en) * 1993-09-20 2000-11-07 Boston Scientific Corporation Multiple biopsy sampling device
US20080015466A1 (en) * 2006-07-13 2008-01-17 Mayo Foundation For Medical Education And Research Obtaining a tissue sample

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