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Shape memory filament for suture management

a memory filament and suture technology, applied in the field of surgical suture management, can solve the problems of superior mechanical properties, impractical use of arthroscopic techniques, and high cost of niti alloys, and achieve the effect of quick and accurate positioning of sutures

Inactive Publication Date: 2008-04-10
KNAPP THOMAS P
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Disclosed is an apparatus, system, and method for percutaneous suture management system that enables an operator to quickly and accurately position a suture at any desired location and optionally along a preferred suture pathway without constraint by cannula or other portal systems. The apparatus includes a member of a rigid flexible elastic material, the member including a body portion and an aperture portion with the member adapted for delivery through an axial longitudinal channel of a percutaneous delivery subsystem, the aperture portion including an expanded mode having a lateral dimension greater than an inner diameter of the channel when the aperture portion extends outside the channel and a collapsed mode wherein the lateral dimension is not greater than the inner diameter of the channel when the aperture portion is within the channel, the channel including a first axial opening and a second axial opening with the aperture portion transitioning from the expanded mode to the collapsed mode when inserted into the openings and the aperture transitioning from the collapsed mode to the expanded mode when exiting from the openings.
[0011]Embodiments of the present invention for suture transports are simpler and more efficient than conventional systems for not only passing, delivering, and installing sutures but also to define suture paths through multiple tissue types and / or structures in multiple discrete steps or in one successive procedure as determined by the operator. Embodiments may require fewer portals while providing for a greater angular access area around a portal using small diameter percutaneous piercers that cause less overall trauma and reductions in local trauma, thus promoting quicker and lower risk recoveries.

Problems solved by technology

These instruments are typically available for use exclusively through the cannula and because cannula placement locations are limited, the ability of a surgeon to place and tie each suture at optimum locations is constrained, both by placement of the cannula as well as limitations of working exclusively through the cannula when placing and tying each suture.
In instances in which it would be desirable to position or distribute sutures through a wide range of angles, it becomes impractical to use arthroscopic techniques due to the relatively large number of portals / cannulas that are required.
NiTi alloys are generally more expensive and possess superior mechanical properties when compared to copper-based SMAs.

Method used

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  • Shape memory filament for suture management
  • Shape memory filament for suture management
  • Shape memory filament for suture management

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Embodiment Construction

[0035]The following description is presented to enable one of ordinary skill in the art to make and use the invention and is provided in the context of a patent application and its requirements. Various modifications to the preferred embodiment and the generic principles and features described herein will be readily apparent to those skilled in the art. Thus, the present invention is not intended to be limited to the embodiment shown but is to be accorded the widest scope consistent with the principles and features described herein.

[0036]FIG. 1 is a suture transport 100 adapted for percutaneous use according to an embodiment of the present invention. Transport 100 includes a member 105 of a rigid flexible elastic material, member 105 including a body portion 110 and an aperture portion 115. Member 105 is adapted for delivery through an axial longitudinal channel of a percutaneous delivery subsystem (e.g., an 18 gauge or smaller spinal needle or other skin-piercing delivery system, o...

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Abstract

A member of a rigid flexible elastic material, the member including a body portion and an aperture portion with the member adapted for delivery through an axial longitudinal channel of a percutaneous delivery subsystem, the aperture portion including an expanded mode having a lateral dimension greater than an inner diameter of the channel when the aperture portion extends outside the channel and a collapsed mode wherein the lateral dimension is not greater than the inner diameter of the channel when the aperture portion is within the channel, the channel including a first axial opening and a second axial opening with the aperture portion transitioning from the expanded mode to the collapsed mode when inserted into the openings and the aperture transitioning from the collapsed mode to the expanded mode when exiting from the openings.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates generally to surgical suture management and more specifically to a percutaneous suture management system and method, more specifically for suture fixation of tissue, through procedures such as for example open and arthroscopic surgeries.[0002]Arthroscopic suturing techniques and instruments have been developed in order to facilitate the suturing of tissue during arthroscopic surgical procedures. In arthroscopic surgery, access to a surgical work site within a patient's body is normally provided through one or more portals formed directly in the patient's body or through one or more cannulas inserted into the body of a patient through small incisions. A chosen surgical procedure is carried out by a surgeon through the use of elongated instruments inserted through these cannulas and it often becomes necessary to suture selected tissue at the surgical work site.[0003]Since the work site is only accessible through a small portal or ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/26
CPCA61B17/0483A61B19/026A61B17/3401A61B17/0485A61B2017/00867
Inventor KNAPP, THOMAS P.
Owner KNAPP THOMAS P
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