US 9,282,964 B1Granted

Releasable tissue anchoring device and method for using

AssigneeMicrofabrica Inc.

InventorsAdam L. Cohen, Christopher R. Folk

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Abstract

Embodiments of invention involve tissue approximation instruments that may be delivered to the body of a patient during minimally invasive or other surgical procedures. In one group of embodiments, the instrument has an elongated configuration with two sets of expandable wings that each have spreadable wings that can be made to expand when located on opposite sides of a distal tissue region and a proximal tissue region and can then be made to move toward one another to bring the two tissue regions into a more proximate position. The instrument is delivered through a needle or catheter and is controlled by relative movement of a push tube and control wire wherein the control wire can be released from the instrument via rotation in a first direction and can cause release of the approximation device from tissue that it is holding by rotation in the opposite direction.

Claims5

Dependent claims

A medical instrument for approximating tissue within a patient's body during a minimally invasive surgical procedure, comprising:

(a) a first set of expandable wings;
(b) a second set of expandable wings;
(c) a rail along which the first and second sets of expandable wings are located;
and
(d) a locking mechanism for allowing the first and second sets of expandable wings to be moved to a more proximate position while inhibiting movement of the first and second sets of expandable wings to a more distant relative position along a length of the rail, after being moved to the more proximate position;
(e) relatively movable elements that engage the first and second sets of expandable wings;
(f) a threaded screw and an oppositely threaded screw;
(g) a threaded engagement feature for engaging a control wire;
(h) a seat region for engaging a push tube, wherein when the control wire and the push tube engage the relatively movable elements and are moved relative to one another, the movable elements can be made to bring the first and second sets of expandable wings to the more proximate position, wherein the first set of expandable wings is a set of distal expansion wings located at a distal position on the medical instrument;
(i) a controllable stop element that inhibits the set of distal expansion wings from extending beyond a desired retention position when located in a first position, and allows distal axial collapse of the distal expansion wings when located in a second position so that the medical instrument may be extracted in its entirety from a proximal side of the tissue;
wherein the control wire is rotatable relative to the threaded engagement feature such that upon rotation in one direction the control wire is disengaged, while rotation in an opposite direction causes turning of the oppositely threaded screw which causes movement of the controllable stop element to the second position that allows the distal axial collapse.

8 more elements

A medical instrument for approximating tissue within a patient's body during a minimally invasive surgical procedure, comprising:

(a) a first set of expandable wings;
(b) a second set of expandable wings;
(c) a rail along which the first and second sets of expandable wings are located;
and
(d) a locking mechanism for allowing the first and second sets of expandable wings to be moved to a more proximate position while inhibiting movement of the first and second sets of expandable wings to a more distant relative position along a length of the rail, after being moved to the more proximate position;
(e) relatively movable elements that engage the first and second sets of expandable wings;
(f) a threaded screw and an oppositely threaded screw;
(g) a threaded engagement feature for engaging a control wire;
(h) a seat region for engaging a push tube, wherein when the control wire and the push tube engage the relatively movable elements and are moved relative to one another, the movable elements can be made to bring the first and second sets of expandable wings to the more proximate position, wherein the first set of expandable wings is a set of distal expansion wings located at a distal position on the medical instrument;
(i) a controllable stop element that inhibits the distal expansion wings from extending beyond a desired retention position when located in a first position, and allows distal axial collapse of the distal expansion wings when located in a second position so that the medical instrument may be extracted in its entirety from a proximal side of the tissue;
wherein both of the first set of expandable wings and the second set of expandable wings comprise toggle wings that pivot open along axes that are perpendicular to a longitudinal axis of the instrument;
and
wherein the toggle wings of both of the first set of expandable wings and the second set of expandable wings expand via a force induced by at least one spring located within the instrument.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/714,179Filed 13 Dec 2012 · continuation
Priority: 29 Oct 2002
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

A61B 17/08
Surgical instruments, devices or methods: wound clamps or clips, i.e. not or only partly penetrating the tissue ; Devices for bringing together…
A61B 17/00234
Surgical instruments, devices or methods: for minimally invasive surgery
A61B 17/0469
For suturing wounds; Holders or packages for needles or suture materials: suturing instruments for use in minimally invasive surgery, e.g.…
A61B 17/0482
For suturing wounds; Holders or packages for needles or suture materials: needle or suture guides

Family

Application60/422,007Us provisional application · filed 29 Oct 2002
Application10/697,598Parent of this continuation-in-part · filed 29 Oct 2003
Application60/686,496Us provisional application · filed 31 May 2005
Application60/726,794Us provisional application · filed 14 Oct 2005
Application60/732,413Us provisional application · filed 1 Nov 2005
Application60/736,961Us provisional application · filed 14 Nov 2005
Application60/761,401Us provisional application · filed 20 Jan 2006
Application11/444,999Parent of this continuation-in-part · filed 31 May 2006
Application11/582,049Parent of this continuation-in-part · filed 16 Oct 2006
Application11/591,911Parent of this continuation-in-part · filed 1 Nov 2006
Application11/598,968Parent of this continuation-in-part · filed 14 Nov 2006
Application11/625,807Parent of this continuation-in-part · filed 22 Jan 2007
Application61/018,269Us provisional application · filed 31 Dec 2007
Application12/346,034Parent of this continuation-in-part · filed 30 Dec 2008
Application61/142,149Us provisional application · filed 31 Dec 2008
Application12/651,388Parent of this continuation · filed 31 Dec 2009
US 7,686,770 B2Parent of this continuation-in-part · filed 30 Mar 2010
US 8,454,652 B1Parent of this continuation
Application12/651,388Parent of this continuation-in-part
US 2005/0121411 A1Published application
US 2006/0282065 A1Published application
US 2007/0100361 A1Published application
US 2007/0112338 A1Published application
US 2007/0198038 A1Published application
US 9,282,964 B1This patent

From the US filing history. Foreign family members aren’t listed.