Over-the-wire interlock attachment/detachment mechanism

• US 9,463,006 B2
• Filed: 12/06/2013
• Issued: 10/11/2016
• Est. Priority Date: 10/18/2000
• Status: Expired due to Term

• Current Assignee: WL Gore and Associates Incorporated (W.L. Gore and Associates)
• Original Assignee: WL Gore and Associates Incorporated (W.L. Gore and Associates)
• Inventors: Forde, Sean T., Opolski, Steven W.
• Primary Examiner(s): BUI, VY Q
• Application Number:
  US14/099,394
• Publication Number:
  US 20140094894A1
• Time in Patent Office: 1,040 Days
• Field of Search: 606/108, 606/190, 606/194, 606/195, 606/198, 606/200, 606/213, 623/1.35, 623/1.11, 623/1.12
• US Class Current: 1/1
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00619 Locking means for locking the implement in expanded state
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/962 having an outer sleeve
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical

Abstract

The over-the-wire interlock attachment/detachment mechanism includes a cylindrical lock receiving section of a small diameter attached to an implantable medical device such as a blood clot filter, a stent, or a septal occluder. This cylindrical lock receiving section has a plurality of spaced, curved cutouts to receive both the guide fingers and contoured locking fingers formed on a cylindrical locking section. The locking fingers are angled outwardly from the cylindrical body of the cylindrical locking section, and are moved inwardly into engagement with the curved cutouts of the cylindrical lock receiving section by a sheath which slides over the cylindrical locking section or other suitable operator.

Claims

1. A system for attachment and detachment of a medical implant from a catheter comprising a catheter defining a tubular shaft extending along a longitudinal axis from a proximal end to a distal end, the distal end comprising a locking mechanism having a male locking structure for interlocking with a corresponding at least one female locking structure attached to the medical implant, the male locking structure having at least two male locking arms extendable from, and integral with, a wall of the tubular shaft, and a sheath configured to releasably restrain the at least two male locking arms which when unrestrained, transition laterally and angularly and release from the at least one female locking structure, wherein the tubular shaft comprises a body and a spring section in the body immediately adjacent the locking mechanism, and wherein the spring section comprises a helical spring extending along the longitudinal axis.

2. The system according to claim 1, wherein the spring section is unitary.

3. The system according to claim 1, wherein the implant is selected from the group consisting of an occluder, a filter, and a stent.

4. The system according to claim 1, wherein the at least two male locking arms comprise a male shaped locking member arranged at a distal end of the at least two male locking arms.

5. The system according to claim 4, wherein the at least one female locking structure comprises a female shaped locking member, and the female shaped locking member and the male shaped locking member are complementary.

6. The system according to claim 4, wherein the at least one female locking structure comprises a convex surface, and the at least one male locking structure comprises a concave surface.

7. The system according to claim 1, wherein the at least two male locking arms are configured to spring outwardly to disengage from the at least one female locking structure in an unconstrained state.

8. The system according to claim 1, wherein the at least two male locking arms extend substantially parallel to a longitudinal axis of the distal end of the tubular shaft in a constrained state.