Fast-detaching electrically insulated implant

an electrically insulated, fast technology, applied in the field of implants, can solve the problems of aneurysm rupture, less favoring balloons, delayed surgical procedure, etc., and achieve the effect of improving the rate at which detachment occurs

Inactive Publication Date: 2012-04-10
STRYKER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024]The improvement involves the use of an insulative or highly resistive covering on at least a portion of the implant. The resistive covering is preferably one which is formed in situ from the material making up the implant. This insulative or highly resistive layer appears to focus the current flow through the sacrificial electrolytic joint and thereby improves the rate at which detachment occurs.

Problems solved by technology

The surgical procedure is often delayed while waiting for the patient to stabilize medically.
Balloons are becoming less in favor because of the difficulty in introducing the balloon into the aneurysm sac, the possibility of aneurysm rupture due to over-inflation of the balloon within the aneurysm, and the inherent risk associated with the traction produced when detaching the balloon.

Method used

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  • Fast-detaching electrically insulated implant
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  • Fast-detaching electrically insulated implant

Examples

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Embodiment Construction

[0033]As noted above, the Guglielmi et al. system for deploying an implant into the human body uses a core wire, an electrolytic sacrificial joint, and the implant to be deployed. A power supply is needed to provide power for electrolysis of the joint. The core wire is typically insulated on its outer surface from near the proximal end of the wire to the electrolytic sacrificial joint. The implant typically forms a portion of the circuit through the body. This invention substantially removes the implant itself from that circuit, thereby apparently focusing the current flow at the electrolytic joint where it is needed.

[0034]FIG. 1 shows a system for introducing and deploying the implant made according to the invention. The system (100) includes a catheter (102) which is made up of elongate tubular member, typically made from a polymeric material and often reinforced to provide strength or obviate kinking propensities with a coil or braid. Catheter (102) is shown with a pair of radio-...

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Abstract

This is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant component is at least partially covered with a highly resistive or insulative covering. The highly resistive or insulative layer or covering appears to enhance the susceptibility of the electrolytic joint to quick erosion and thus detachment of the implant. Although the implant itself is preferably a vaso-occlusive device, it may instead be a stent, a vena cava filter, or other implant which may be installed in this manner. The implant may be independently coated with insulative or resistive material or may be formed using a material with such as tantalum, which forms such an insulator or resistor in situ.

Description

RELATED PATENT APPLICATION DATA [0001]This application is a continuation reissue of U.S. reissue application Ser. No. 10 / 900,901, filed on Jul. 27, 2004 (now abandoned), which is a reissue application of U.S. application Ser. No. 09 / 668,033, filed on Sep. 21, 2000, now U.S. Pat. No. 6,425,914, which is a continuation of U.S. patent application Ser. No. 08 / 920,526, filed on Aug. 29, 1997, now U.S. Pat. No. 6,156,061 the entirety of which is hereby incorporated by reference.FIELD OF THE INVENTION[0002]This invention is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant component is at least partially covered with a highly resistive or insulative covering. The hi...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): A61F2/06A61M29/00A61B17/12A61F2/01A61F2/02A61F2/88A61F2/90
CPCA61B17/12022A61B17/12113A61B17/12145A61B17/1215A61B17/12154A61B2017/12063A61F2/01A61F2/88A61F2/90A61F2/95A61F2/011A61F2/0105
InventorWALLACE, MICHAEL P.BASHIRI, MEHRANROUE, CHAD C.
OwnerSTRYKER CORP