Cap with band deployment features

Patent metadata

Field	Value
Publication number	US-10786256-B2
Application number	US-201816151117-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Jun 5, 2013
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.

First claim

What is claimed is:

1. A method for deploying a ligation band, comprising:
inserting a medical device within a human body until the medical device contacts a target tissue, the medical device including a tubular body, comprising:
a proximal end:
a distal end;
a radially inner surface defining a lumen through the tubular body; and
a radially outer surface including:
plurality of first protrusions arranged in circumferential rows extending transverse to a longitudinal axis of the body at least partially around a proximal region of the radially outer surface, wherein adjacent rows of the first protrusions are separated from one another in a proximal to distal direction by a first distance; and
a plurality of grooves, each groove extending at least partially around a distal region of the radially outer surface, all of the grooves being distal of a distal-most row of the first protrusions, wherein adjacent grooves are separated from one another in a proximal to distal direction by a second distance larger than the first distance; and

deploying a ligation band from the tubular body about a portion of target tissue drawn into the tubular body to ligate the target tissue.

2. The method of claim 1 , further comprising:
drawing the target tissue into the lumen of the tubular body by applying a suction force through the tubular body lumen.

3. The method of claim 1 , further comprising:
deploying the ligation band by pulling proximally from the proximal end of the tubular body a suture coupled to the ligation band to move the ligation band distally such that ligation band encounters the first protrusions and the grooves, the first protrusions and grooves including teetering points for initiating tilting of the ligation band as the ligation band moves distally across the first protrusions and the grooves.

4. The method of claim 1 , wherein the radially outer surface includes at least one radially inwardly extending second protrusion configured to engage an imaging device.

5. The method of claim 4 , wherein all of the grooves are distal to the second protrusion.

6. The method of claim 4 , wherein the imaging device contains a lens, the imaging device having a field of view through the lens, wherein the second protrusion is configured to engage the imaging the device to position the imaging device so that the first protrusions are outside of the field of view of the imaging device.

7. The method of claim 1 , wherein the radially outer surface includes at least one micropattern formed by a plurality of microstructures.

8. The method of claim 1 , wherein the first protrusions and the grooves reduce surface contact between the ligation band and the radially outer surface.

9. The method of claim 1 , further comprising resecting the ligated tissue via a tissue resection device.

10. A method for deploying a ligation band, comprising:
inserting a medical device within a human body to a position adjacent to target tissue to be ligated, the medical device including a tubular body, comprising:
a proximal end:
a distal end;
a radially inner surface defining a lumen through the tubular body, the radially inner surface including at least one radially inwardly extending first protrusion configured to engage an imaging device, wherein a proximal region of the tubular body is proximal to the first protrusion and a distal region of the tubular body is distal to the first protrusion; and
a radially outer surface including:
a plurality of second protrusions extending circumferentially around at least a portion of on the radially outer surface of the proximal region of the tubular body, wherein adjacent rows of the second protrusions are separated from one another in a proximal to distal direction by a first distance; and
a plurality of grooves, each groove in the radially outer surface, the grooves extending circumferentially about at least a portion of the tubular body distal of a distal-most row of the second protrusions, wherein adjacent grooves are separated from one another by a second distance larger than the first distance; and

deploying the ligation band from the tubular body about the target tissue to ligate the target tissue.

11. The method of claim 10 , further comprising pulling the target tissue into the lumen of the tubular body by applying suction through the tubular body lumen.

12. The method of claim 10 , further comprising deploying the ligation band by pulling proximally from a proximal end of the medical device a suture coupled to the ligating band to move the ligating band distally over the tubular body band such that ligation band encounters the second protrusions and the grooves, the second protrusions and grooves tilting the ligation band as the ligation band moves distally across the second protrusions and the grooves.

13. The method of claim 10 , wherein the radially outer surface includes at least one micropattern formed by a plurality of microstructures.

14. The method of claim 13 , wherein the at least one micropattern increases a hydrophobicity of the radially outer surface in the distal region of the tubular body.

15. The method of claim 10 , wherein the second protrusions and the grooves reduce surface contact between the ligation band and the radially outer surface.

16. A method for deploying a ligation band, comprising:
inserting a medical device within a living body until the medical device is adjacent to target tissue to be ligated, the medical device including a tubular body, comprising:
a proximal end:
a distal end;
a radially inner surface defining a lumen through the tubular body; and
a radially outer surface including:
a distal region,
a proximal region,
a plurality of radially inwardly extending grooves formed in the radially outer surface, in the distal region, each groove extending transverse to a longitudinal axis of the body; and
a plurality of protrusions arranged in circumferential rows in the proximal region, the protrusions being positioned on the proximal region proximally of a proximal-most one of the grooves; and

deploying the ligation band from the tubular body over the target tissue to ligate the target tissue.

17. The method of claim 16 , wherein each of the plurality of radially inwardly extending grooves extends circumferentially around a portion of the radially outer surface.

18. The method of claim 16 , wherein a first one of the radially inwardly extending grooves includes a middle portion and an opposite end portion, the middle portion of the first groove being one of wider than and deeper than the opposite end portion of the first groove.

19. The method of claim 16 , wherein a second one of the radially inwardly extending grooves includes a proximal surface and a distal surface, a length of the proximal surface of the second groove being shorter than a length of the distal surface of the second groove.

20. The medical of claim 16 , wherein at least one of the radially inwardly extending grooves includes an edge, the edge acting as a teetering point of initiating tilting of the ligation band as the ligation band moves over the ledge.

Assignees

• Boston Scient Scimed Inc

Inventors

• Smith Paul
• Schaubhut Andrew
• Carrillo Jr Oscar R
• Golden John B
• Isaacson Brad M
• Amos Michael D
• May Norman C
• Yan Dengzhu
• Weldon James
• Congdon Daniel

Classifications

• A61B17/12013 Primary

  for use in minimally invasive surgery, e.g. endoscopic surgery · CPC title

• A61B2017/306

  holding by means of suction · CPC title

• A61B90/361

  Image-producing devices, e.g. surgical cameras · CPC title

• A61B2017/00296

  mounted on an endoscope · CPC title

• A61B2017/00269

  endoscopic mucosal resection EMR · CPC title