Systems and methods for tissue removal

Patent metadata

Field	Value
Publication number	US-11547444-B2
Application number	US-202017101201-A
Country	US
Kind code	B2
Filing date	Nov 23, 2020
Priority date	Nov 13, 2014
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

Systems and methods for preventing the seeding of cancerous cells during morcellation of a tissue specimen inside a patient's body and removal of the tissue specimen from inside the patient through a minimally-invasive body opening to outside the patient are provided. One system includes a cut-resistant tissue guard removably insertable into a containment bag. The tissue specimen is isolated and contained within the containment bag and the guard is configured to protect the containment bag and surrounding tissue from incidental contact with sharp instrumentation used during morcellation and extraction of the tissue specimen. The guard is adjustable for easy insertion and removal and configured to securely anchor to the body opening. Protection-focused and containment-based systems for tissue removal are provided that enable minimally invasive procedures to be performed safely and efficiently.

First claim

We claim:

1. A system for removing a tissue specimen through a body opening defining a tissue margin, the system comprising:
a shield including a band made of flexible cut-resistant material; the band having an inner surface and an outer surface interconnected by a top end and a bottom end and by a first end and a second end; the band being configured to define a central lumen having a longitudinal axis; the central lumen having a lumen diameter that is perpendicular to the longitudinal axis; and
a locking mechanism configured to fix the lumen diameter; the locking mechanism includes at least one inner abutment formed on the inner surface; the at least one inner abutment extending along the longitudinal axis along at least a portion of the band between the top end and the bottom end; the first end being configured to contact the at least one inner abutment to prevent reduction of the lumen diameter in a locked configuration,
wherein the band is split such that the band is movable into a reduced configuration where at least a portion of the outer surface at the first end overlaps and is in juxtaposition with the inner surface at the second end to form a spiral and define an overlapping portion,
wherein the band includes a resting configuration defining a resting lumen diameter; the band being configured to have no overlapping portion when in the resting configuration, and
wherein the shield is configured to have a variable lumen diameter by varying the overlapping portion.

2. The system of claim 1 wherein the band is further configured to spring back toward the resting configuration and resting lumen diameter from an increased or reduced lumen diameter.

3. The system of claim 1 wherein a portion of a band between the top end and the bottom end is at least equal to or greater than 50 percent of a surface length of the shield.

4. The system of claim 1 wherein the locking mechanism is configured to further function in conjunction with tissue pressure when inserted inside a body opening or orifice to effect the locked configuration.

5. The system of claim 4 wherein when in the locked configuration, the shield is configured to retract the tissue margin when inserted inside the body opening or orifice and the locked configuration prevents reduction in a locked lumen diameter.

6. The system of claim 5 wherein the shield is configured to remain in the locked configuration only when placed into the body opening or orifice and subject to circumferential pressure exerted by the tissue margin onto the shield.

7. The system of claim 1 wherein in the reduced configuration at least a portion of the outer surface of the band overlaps and faces at least a portion of the inner surface of the band such that the inner surface of one part of the band is nested in the outer surface of the band.

8. The system of claim 1 wherein the at least one inner abutment comprises a plurality of inner abutments being spaced around the inner surface of the band to provide multiple releasable locking positions to variably fix the lumen diameter.

9. The system of claim 8 wherein the outer surface of the band comprises a plurality of outer abutments or receiving areas; each of the plurality of outer abutments or receiving areas being sized and configured to receive one of the plurality of inner abutments.

10. The system of claim 1 wherein the top end includes a top flange that extends radially outwardly forming a funnel-like shape in which the lumen diameter increases toward the top end and the bottom end includes a bottom flange that extends radially outwardly forming a funnel-like shape in which the lumen diameter increases toward the bottom end.

11. A system for removing a tissue specimen through a body opening defining a tissue margin, the system comprising:
a shield including a band made of flexible cut-resistant material; the band having an inner surface and an outer surface interconnected by a top end and a bottom end and by a first end and a second end; the band being configured to define a central lumen having a longitudinal axis; the central lumen having a lumen diameter that is perpendicular to the longitudinal axis; wherein the band is split such that the band is movable into a reduced configuration where at least a portion of the outer surface at the first end overlaps and is in juxtaposition with the inner surface at the second end to form a spiral and define an overlapping portion; the shield being configured to have a variable lumen diameter by varying the overlapping portion; and
a locking mechanism configured to fix the lumen diameter; the locking mechanism includes a plurality of inner abutments formed on the inner surface and a plurality of outer abutments formed on the outer surface; each of the plurality of inner abutments being configured to contact one of the plurality of outer abutments or the first end to prevent reduction of the lumen diameter in a locked configuration,
wherein a portion of the band is adapted for jogging outwardly to form a ridge in the inner surface defining an increased lumen diameter; the increased lumen diameter being the lumen diameter increased by a segment distance that extends along a portion of the band from the ridge to the second end.

12. The system of claim 11 wherein the portion of the band is displaced outwardly by a distance equal to a width of the band defined between the inner surface and outer surface of the band.

13. The system of claim 11 wherein the ridge is configured to contact the first end of the band in the locked configuration having a smallest locked lumen diameter.

14. The system of claim 11 wherein the plurality of inner abutments are disposed between the ridge and the second end.

15. The system of claim 11 wherein the ridge comprises an inner ridge surface and a corresponding outer ridge surface; the inner ridge surface being configured such that the inner surface of the band is substantially flush at an intersection with the overlapping portion of the band.

16. The system of claim 11 wherein the locked configuration prevents reduction and expansion of the lumen diameter.

17. The system of claim 11 wherein the plurality of inner abutments and the plurality of outer abutments extend along the longitudinal axis along at least a portion of the band between the top end and the bottom end.

18. The system of claim 17 wherein a portion of the band between the top end and the bottom end is at least equal to or greater than 50 percent of a surface length of the shield.

19. The system of claim 11 wherein the locking mechanism is configured to further function in conjunction with tissue pressure when inserted inside a body opening or orifice to effect the locked configuration, wherein when in the locked configuration.

20. The system of claim 19 wherein the shield is configured to retract the tissue margin when inserted inside the body opening or orifice, and wherein the shield is configured to remain in the locked configuration only when placed into the body opening or orifice and subject to circumferential pressure exerted by the tissue margin onto the shield.

Assignees

• Applied Med Resources

Inventors

• Wachli Serene
• Breslin Tracy
• Kessler Steven C
• Poulsen Nikolai
• Collins Nathan
• Do Alexandra
• Bolanos Eduardo
• Pravong Boun
• Elliott Patrick
• Wixey Matthew A
• Young Wayne
• Filek Jacob J
• Castelo Kevin B
• Hoke Adam
• Hofstetter Gregory K
• Demarchi Jacqueline
• Garces Amy
• Holmes Heidi
• Sheehan Alexander

Classifications

• A61B2017/3466

  for simultaneous sealing of multiple instruments · CPC title

• A61B2017/00557

  inflatable (A61B2017/22051 takes precedence) · CPC title

• A61B2090/08021

  of the patient or his organs · CPC title

• A61B2017/00287

  Bags for minimally invasive surgery · CPC title

• A61B2017/4216

  Operations on uterus, e.g. endometrium · CPC title