Devices and methods for anchoring a sheath in a tissue cavity
First Claim
1. An anchoring system, comprising:
- a sleeve having an inner surface defining a first lumen, wherein the sleeve is configured to be disposed in a tissue cavity proximal to a damaged area of tissue of the tissue cavity;
a first annular sealing mechanism disposed at a proximal end of the sleeve;
a second annular sealing mechanism disposed at a distal end of the sleeve;
a pressure tube in fluid connection with an outer surface of the sleeve;
a sheath in connection with the sleeve, the sheath forming a second lumen, the second lumen being in fluid connection with the first lumen of the sleeve, the sheath having a proximal end in sealed fluid communication with, and extending distal to, a distal end of the sleeve and the second annular sealing mechanism, wherein the proximal end of the sheath, extending distal to the distal end of the sleeve, is configured to cover and protect the damaged area of the tissue of the tissue cavity from content flowing through the second lumen of the sheath and the first lumen of the sleeve; and
open-cell foam disposed on the outer surface of the sleeve,wherein the anchoring system is configured to apply negative pressure by an external negative pressure source to the pressure tube to form a sealed configuration of the sleeve that substantially prevents displacement of the sleeve in an axial direction due to friction forces between (i) the open-cell foam and the first and second annular sealing mechanisms of the sleeve; and
(ii) the tissue of the tissue cavity proximal to and at a different location from the damaged area of the tissue of the tissue cavity.
1 Assignment
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Accused Products
Abstract
According to some embodiments of the invention, an anchoring system includes a sleeve having an inner surface defining a first lumen, a first annular sealing mechanism disposed at a proximal end of the sleeve, and a second annular sealing mechanism disposed at a distal end of the sleeve. The anchoring system further includes a pressure tube in fluid connection with an outer surface of the sleeve, a sheath in mechanical connection with the sleeve, the sheath forming a second lumen, the second lumen being in fluid connection with the first lumen, and open-cell foam disposed on the outer surface of the sleeve. Application of negative pressure to the pressure tube causes a seal to form between the first and second annular sealing mechanisms and an inner surface of a tissue cavity. Application of negative pressure to the pressure tube also creates a frictional force that resists displacement of the sleeve.
67 Citations
27 Claims
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1. An anchoring system, comprising:
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a sleeve having an inner surface defining a first lumen, wherein the sleeve is configured to be disposed in a tissue cavity proximal to a damaged area of tissue of the tissue cavity; a first annular sealing mechanism disposed at a proximal end of the sleeve; a second annular sealing mechanism disposed at a distal end of the sleeve; a pressure tube in fluid connection with an outer surface of the sleeve; a sheath in connection with the sleeve, the sheath forming a second lumen, the second lumen being in fluid connection with the first lumen of the sleeve, the sheath having a proximal end in sealed fluid communication with, and extending distal to, a distal end of the sleeve and the second annular sealing mechanism, wherein the proximal end of the sheath, extending distal to the distal end of the sleeve, is configured to cover and protect the damaged area of the tissue of the tissue cavity from content flowing through the second lumen of the sheath and the first lumen of the sleeve; and open-cell foam disposed on the outer surface of the sleeve, wherein the anchoring system is configured to apply negative pressure by an external negative pressure source to the pressure tube to form a sealed configuration of the sleeve that substantially prevents displacement of the sleeve in an axial direction due to friction forces between (i) the open-cell foam and the first and second annular sealing mechanisms of the sleeve; and
(ii) the tissue of the tissue cavity proximal to and at a different location from the damaged area of the tissue of the tissue cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A temporary anchoring device for diverting fecal flow through a bowel lumen, comprising:
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a sleeve having an inner surface defining a first lumen, wherein the sleeve is configured to be disposed in the bowel lumen proximal to a damaged area of tissue of the bowel lumen; a first annular sealing mechanism disposed at a proximal end of the sleeve; a second annular sealing mechanism disposed at a distal end of the sleeve; a pressure tube in fluid connection with an outer surface of the sleeve; a sheath in connection with the sleeve, the sheath forming a second lumen, the second lumen being in fluid connection with the first lumen of the sleeve, the sheath having a proximal end in sealed fluid communication with, and extending distal to, a distal end of the sleeve and the second annular sealing mechanism, wherein the proximal end of the sheath, extending distal to the distal end of the sleeve, is configured to cover and protect the damaged area of the tissue of the bowel lumen from fecal flow through the sheath; and air conducting rough surface material disposed on the outer surface of the sleeve, wherein the anchoring system is configured to apply negative pressure by an external negative pressure source to the pressure tube to form a sealed configuration of the sleeve that substantially prevents displacement of the sleeve in an axial direction due to friction forces between (i) the air conducting rough surface material and the first and second annular sealing mechanisms of the sleeve and (ii) an area of the tissue of the bowel lumen proximal to and at a different location from the damaged area of the tissue of the bowel lumen. - View Dependent Claims (26)
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27. A method for anchoring a sheath in a tissue cavity, the sheath being in connection with a sleeve and extending distal to the sleeve, the sleeve having an outer surface comprising foam for contacting an area of tissue of the tissue cavity, an inner surface defining a first lumen, and a sealing mechanism for isolating a portion of the tissue of the tissue cavity adjacent to the sleeve from a remainder of the tissue cavity, the sheath forming a second lumen, the second lumen being in fluid connection with the first lumen of the sleeve, the sheath having a proximal end in sealed fluid communication with, and extending distal to, a distal end of the sleeve and the sealing mechanism, the method comprising:
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inserting the sleeve in the tissue cavity such that the sleeve is proximal to a damaged area of tissue of the tissue cavity and the sheath covers and protects the damaged area of the tissue of the tissue cavity from content flowing through the sheath and the sleeve; and applying a negative pressure to a region between an outer surface of the sleeve and the isolated portion of the tissue of the tissue cavity to form a sealed configuration of the sleeve that substantially prevents displacement of the sleeve in an axial direction due to friction forces between (i) the outer surface of the sleeve comprising foam and the sealing mechanism; and
(ii) an area of tissue of the tissue cavity proximal to and at a different location from the damaged area of the tissue of the tissue cavity.
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Specification