Medical closure device

Inactive Publication Date: 2009-09-17
ST JUDE MEDICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]To prevent any tendency of unwinding of the filament(s) in a loop, some adherent material or property can be provided to cause the filaments to adhere to one another. Such an adherent, which could be an adhesive or a tacky material, e.g. wax or grease, or a conventional suture coating material, can be applied either to the surface of the loop itself, or to the surface of the individual filaments constituting the l

Problems solved by technology

For this reason it is less favorable to produce a loop from a thread whose ends are tied together, because there is a risk that the resulting knot gets stuck in the insertion and positioning assembly during the delivery procedure.
To create a loop by gluing together the ends of a thread is also less practical, because, for example, glue has to harden, and care must be taken to ensure that

Method used

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Examples

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Example

[0017]In FIG. 1a, a first embodiment of a sealing device 1 comprising an inner member 2 and retaining member 3 in the form of a loop 3 according to the present invention is schematically illustrated. The inner member 2 is adapted to be introduced into a vessel (for example, a blood vessel) and positioned at an inner surface of the vessel wall, where the inner member 2 is held in place by tension applied in the retaining member 3. The retainer loop 3 has been created by winding up a thin filament multiple times such that the loop 3 has several coils of the same filament. Depending on in particular the surface characteristics of the filament used, the number of windings can easily be made sufficiently large such that a loop that holds together without the use of, for example, a knot or glue is produced. To prevent any tendency of the filament coils to fray, an adherent, like wax or suture coating, can be applied to the surface of the filament during winding. As an alternative, an adhe...

Example

[0019]In FIG. 2 a cross-section of a second embodiment of a loop 13 according to the present invention is schematically illustrated. In this embodiment, several monofilaments have simultaneously been wound multiple times to create a composite loop 13. For illustrating purposes the number of monofilaments has been reduced to five (5), and the number of turns is ten (10), resulting in that each monofilament appears ten times in the cross-section and that the cross-section comprises a total of fifty (50) individual monofilament cross-sections. In practise, it may be preferred that these numbers, for example, are doubled, i.e. the number of monofilaments is ten (10) and the number of coils is twenty (20). It should, however, be emphasized that for a given situation, the adequate number of monofilaments as well as the adequate number of turns are very easily established by a few simple trials.

[0020]A similar way of manufacture a loop comprising multiple coils of the same filaments is to ...

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Abstract

A medical closure device (1; 20) comprising an inner member (2; 23), which is adapted to be positioned against an inner surface of a tissue wall, and a retaining member (3; 13; 21), which is attached to the inner member, wherein the retaining member is in the form of a loop made up by multiple coils of at least one filament, the coils lying side-by-side one another such that when increasing tension is applied in the loop, at least one of the at least one filament breaks apart before side-by-side portions of the at least one filament slide readily with respect to one another.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to the field of sealing or closure devices for, e.g., the sealing of a percutaneous puncture in a vessel wall, and in particular to the class of sealing devices that comprises an intra-arterial member, which is held in place by a retaining member, and more particular to the special characteristics of this retaining member.BACKGROUND OF THE INVENTION[0002]In U.S. Pat. No. 6,508,828, which is assigned to the present assignee and whose entire contents are incorporated herein by reference for the sealing devices and methods disclosed therein, a sealing device is disclosed for sealing a puncture hole in a vessel wall. This sealing device comprises an inner sealing member, an outer locking member, and a retaining member. The inner sealing member is adapted to be positioned at an inner surface of the vessel wall, while the outer member is adapted to be positioned at an outer surface of the vessel wall. In use, the inner an...

Claims

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Application Information

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IPC IPC(8): A61B17/12
CPCA61B17/0057A61B2017/0461A61B2017/00778A61B2017/00659
Inventor MAHLIN, FREDRIKPREINITZ, FREDRIK
Owner ST JUDE MEDICAL SYST
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