Apparatus for pulling out an object, having an elongated inner lumen, from its anchorage in a body
First Claim
1. An apparatus for pulling out an object, having an elongated inner lumen from its anchorage in a body, the apparatus comprising:
- an anchoring part for introduction into the inner lumen of the object having radially expandable sections offset from one another and discrete in an axial direction of the anchoring part;
a tube having a control wire extending therethrough and through the anchoring part, an end of the tube engaging a base of the anchoring part and the control wire having a distal end engaging a distal end of the anchoring part; and
an actuating device for effecting relative axial movement between the tube and the control wire to apply an axially acting force on the anchoring part to effect deformation of the anchoring part between a displacement configuration and an expanded locking configuration, wherein the anchoring part has in the locking configuration the radially expandable section expanded in the radial direction and offset from one another.
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Accused Products
Abstract
An extraction apparatus for heart pacemaker electrodes or defibrillator electrodes has an anchoring part which can be deformed using an actuating device from a displacement configuration into an expanded locking configuration. The anchoring part has a tube section with several wall cut-outs, which are offset in the axial direction and between which guide rings remain, which are connected by trough-shaped cross members. By exerting a tensile force on a control wire using the actuating device, the tube section is compressed and the trough-shaped cross members are deformed radially, so that they attain engagement with the inner lumen of the spiral helix of a heart pacemaker electrode cable or defibrillator electrode cable and, as a result of a spiral offset, bring about a positive locking, which permits high pull-out forces.
47 Citations
30 Claims
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1. An apparatus for pulling out an object, having an elongated inner lumen from its anchorage in a body, the apparatus comprising:
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an anchoring part for introduction into the inner lumen of the object having radially expandable sections offset from one another and discrete in an axial direction of the anchoring part;
a tube having a control wire extending therethrough and through the anchoring part, an end of the tube engaging a base of the anchoring part and the control wire having a distal end engaging a distal end of the anchoring part; and
an actuating device for effecting relative axial movement between the tube and the control wire to apply an axially acting force on the anchoring part to effect deformation of the anchoring part between a displacement configuration and an expanded locking configuration, wherein the anchoring part has in the locking configuration the radially expandable section expanded in the radial direction and offset from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for engaging an inner lumen of an object, the apparatus comprising:
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an anchoring part for introduction into the inner lumen of the object, said anchoring part defining an axis and having a base end and a distal end, said anchoring part including;
ring sections disposed along said axis and displaced axially from each other, ones of said ring sections being respective disposed at said base end and said distal end; and
interconnecting sections, single ones of said interconnecting sections being disposed between and interconnecting adjacent ones of said ring sections, said interconnecting sections thereby being separated from one another by said ring sections in an axial direction of said anchoring part, said interconnecting sections being deformable away from said axis in a radial direction by compressive force applied said ring sections in said axial direction;
a tube having a control wire extending therethrough and through said anchoring part, an end of said tube engaging said base end of said anchoring part and said control wire having a distal end engaging said distal end of said anchoring part; and
an actuating device for effecting relative axial movement between said tube and said control wire to apply an axially acting compressive force on said anchoring part to effect said deformation of said interconnecting sections by compressive force applied by said ring sections in said axial direction. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification