METHODS AND DEVICES FOR PREPARING AND IMPLANTING TISSUE SCAFFOLDS

• US 20130041380A1
• Filed: 10/17/2012
• Published: 02/14/2013
• Est. Priority Date: 03/27/2009
• Status: Active Grant

• Current Assignee: Depuy Mitek LLC (Johnson & Johnson)
• Original Assignee: Depuy Mitek LLC (Johnson & Johnson)
• Inventors: DiMatteo, Kristian, Sengun, Mehmet Ziya
• Granted Patent: US 8,469,980 B2
• Time in Patent Office: Days
• US Class Current: 606/87
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 2017/00738 part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon
• CPC Class Codes: A61B 2017/00969 used for transplantation
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/3904 specially adapted for marking specified tissue
• CPC Class Codes: A61B 2090/3937 Visible markers
• CPC Class Codes: A61B 90/06 Measuring instruments not otherwise provided for
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/02 Prostheses implantable into the body closure means for urethra or rectum or for artificial body openings therefor A61F2/0004
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2002/30759 Mosaicplasty, i.e. using a plurality of individual cartilage plugs for filling a substantial cartilage defect
• CPC Class Codes: A61F 2002/30766 Scaffolds for cartilage ingrowth and regeneration
• CPC Class Codes: A61L 2430/06 for cartilage reconstruction, e.g. meniscus
• CPC Class Codes: A61L 2430/34 for soft tissue reconstruction
• CPC Class Codes: A61L 27/3641 characterised by the site of application in the body materials for artificial blood vessels A61L27/507; materials for use in artificial skin A61L27/60
• CPC Class Codes: A61L 27/3654 Cartilage, e.g. meniscus

Abstract

Methods and devices are provided for preparing and implanting tissue scaffolds. Various embodiments of scribing tools are provided that are configured to mark one or more predetermined shapes around a defect site in tissue. The shape or shapes marked in tissue can be used to cut a tissue scaffold having a shape that matches the shape or shapes marked in tissue. In one embodiment, the scribing tool used to mark a shape in tissue can also be used to cut the tissue scaffold.

Claims

1. A tissue repair kit, comprising:

a scribing tool configured to form in tissue a circular mark having a predetermined diameter; and

a cutting template device having first and second portions slidably coupled to one another, the first and second portions having a first position in which the first and second portions define a circular cut-out formed therebetween and having a diameter that corresponds to the predetermined diameter, and an expanded position in which the first and second portions define an oblong cut-out formed therebetween and having a major axis length that is adjustable.

2. The kit of claim 1, wherein the first and second portions in the first position define a plurality of circular cut-outs formed therebetween, each of the plurality of circular cut-outs having a different diameter.

3. The kit of claim 2, further comprising a plurality of scribing tools, each of the plurality of scribing tools configured to form in tissue a circular mark having a predetermined diameter corresponding to one of the diameters of the plurality of circular cut-outs.

4. The kit of claim 1, wherein the first and second portions in the expanded position define a plurality of oblong cut-outs formed therebetween, each of the plurality of oblong cut-outs having a major axis length that is adjustable.

5. A surgical method, comprising:

measuring a length of an oblong cut formed in tissue;

slidably moving first and second portions of a template tool to form a cut-out between the first and second portions that has a length that corresponds to the measured length of the oblong cut formed in the tissue; and

using the cut-out to form a tissue repair scaffold having a size and shape that corresponds to the oblong cut formed in the tissue.

6. The method of claim 5, further comprising scribing the oblong cut formed in tissue using a scribing tool configured to form in tissue a circular cut having a predetermined diameter.

7. The method of claim 6, wherein slidably moving first and second portions of a template tool comprises moving the first and second portions from a first position defining a first shape having a diameter equal to the predetermined diameter to an expanded position defining a second shape that has a length that corresponds to the measured length of the oblong cut formed in the tissue.

8. The method of claim 5, further comprising implanting the tissue repair scaffold in the oblong cut in the tissue.

9. A surgical method, comprising:

advancing a transparent film through a passageway extending through tissue and into a body cavity, the film having a folded configuration when disposed within the passageway and opening to a planar configuration upon passage out of the passageway and into the body cavity;

positioning the film over a defect in a tissue surface in the body cavity;

comparing a shape of the film to a shape of the defect;

removing the film from the patient;

cutting the film to have a shape that substantially corresponds to the shape of the defect; and

using the cut film shape as a template to cut a tissue repair scaffold such that the tissue repair scaffold has a shape that substantially corresponds to the shape of the defect.

10. The method of claim 9, further comprising, prior to advancing a transparent film through a passageway, selecting a transparent film from one of a plurality of transparent films having predefined different shapes.

11. The method of claim 9, further comprising, prior to using the cut film shape as a template to cut a tissue repair scaffold, repeating the steps of advancing, positioning, comparing, removing, and cutting.