Devices, systems, and methods for providing sealable access to a working channel

Patent metadata

Field	Value
Publication number	US-12070187-B2
Application number	US-201916671833-A
Country	US
Kind code	B2
Filing date	Nov 1, 2019
Priority date	Nov 2, 2018
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

The present disclosure relates generally to the field of medical devices such as endoscopes, endoscope assemblies, guide tubes, introducers, and instrument caps for endoscopes, guide tubes, and introducers. In particular, the present disclosure relates to biopsy cap configurations providing sealable access for medical instruments to a working channel, such as a working channel for an endoscope.

First claim

What is claimed is:

1. A seal assembly, comprising:
a biopsy cap having a first end and a second end, an inner chamber defined therein between the first end and the second end, and a cap aperture at the first end in fluid communication with the inner chamber;
a plurality of seal members disposed within the inner chamber, each seal member having a seal aperture in fluid communication with the cap aperture; and
a base disposed within the inner chamber, the base having a base aperture therethrough in fluid communication with each of the seal apertures;
wherein:
the plurality of seal members are disposed between the base and the first end of the biopsy cap; and
the base further comprises at least two extensions that extend distally from the base and beyond the second end of the biopsy to engage a port of a working channel.

2. The assembly of claim 1 , wherein the base further comprises a recess configured to engage the biopsy cap frictionally.

3. The assembly of claim 2 , wherein the recess is an external annular recess.

4. The assembly of claim 1 , wherein a proximal end of the base has a slope towards the base aperture, the slope having a first angle that transitions to a second angle, wherein the second angle is between the first angle and the aperture, and wherein the second angle is larger than the first angle.

5. The assembly of claim 4 , wherein the first angle is about 30° and the second angle is about 45°.

6. The assembly of claim 1 , wherein the base and the biopsy cap are configured to be frictionally secured together.

7. The assembly of claim 1 , wherein each of the apertures of the plurality of seal members are axially aligned with each other, the base aperture, and the cap aperture.

8. The assembly of claim 1 , wherein at least one of the plurality of seal members comprises a plurality of surfaces extending radially about the seal aperture in a helical pattern.

9. The assembly of claim 1 , wherein at least one of the plurality of seal members comprises a plurality of projections extending radially inward towards the seal aperture, wherein the plurality of projections are angularly offset layers.

10. The assembly of claim 9 , wherein the plurality of projections define the seal aperture at the center of the seal member such that the seal aperture extends axially through the seal member.

11. A device configured to attach to a port of an endoscope extending from a handpiece of the endoscope, the device comprising:
a biopsy cap having a proximal end and a distal end spaced from the proximal end, the distal end including a securing member configured to secure the biopsy cap to the endoscope port; and
a base defining an aperture therethrough in fluid communication with the endoscope port, and having a securement region defining a first seal engaging the perimeter of the endoscope port, and a second seal engaging a top surface of the endoscope port proximally spaced from the endoscope handpiece;
wherein:
the base has at least two circumferentially-spaced apart extensions that extend distally from the securement region of the base and toward the endoscope handpiece; and
the at least two extensions from the base are configured to contact and engage a side surface of the endoscope port distal to the first seal and are positioned distally beyond other elements of the device to be accessible by a user to assist in removing the base from the port.

12. The device of claim 11 , wherein an external annular recess is disposed about the base and is complementary to the securing member of the biopsy cap to secure the distal end of the biopsy cap to the base.

13. The assembly of claim 11 , wherein a proximal end of the base has a slope towards the aperture, the slope having a first angle that transitions to a second angle, wherein the second angle is between the first angle and the aperture, and wherein the second angle is larger than the first angle.

14. The device of claim 13 , wherein the first angle is about 30° and the second angle is about 45°.

15. The device of claim 11 , wherein the at least two extensions are circumferentially spaced apart from one another and extend distally out of the base to engage the port of the endoscope and to be directly accessible and engageable by a user.

16. The device of claim 11 , further comprising a ridge about the aperture configured to compressively seal against the port.

17. A seal system, comprising:
an endoscope having a working channel and a port at a proximal end of the working channel;
a base having a base aperture therethrough, and a securement region configured to engage a side surface of the port; and
a biopsy cap having a first end with a cap aperture therethrough in fluid communication with the base aperture and the port, a second end configured to secure the biopsy cap to the port, and an inner chamber defined therein between the first end and the second end;
wherein:
the second end of the biopsy cap is secured to the base;
at least two circumferentially-spaced apart extensions extend distally from the base and distally beyond the securement region of the base and distally beyond the second end of the biopsy cap to contact and engage the side surface around the port; and
the at least two extensions are configured and are positioned with respect to other portions of the seal system to provide unobstructed access thereto by a user to assist in removing the base from the port.

18. The system of claim 17 , further comprising a medical instrument extending through the cap aperture, the base aperture, and the port.

19. The system of claim 17 , further comprising a seal member disposed within an inner chamber of the biopsy cap, the seal member having a seal aperture in fluid communication with the cap aperture.

20. The system of claim 17 , wherein the inner chamber of the biopsy cap extends between the base and the first end of the biopsy cap and is configured to receive one or more further elements of the seal system therein.

Assignees

• Boston Scient Ltd
• Boston Scientific Medical Device Limited

Inventors

• Aneja Harchetan Singh
• Bharos Amit Sharad
• Upadhyay Swami
• RAJARATHNAM Boopathi
• Rawat Shalin Singh
• Neelamegam Venkatesh

Classifications

• A61B1/00066 Primary

  Proximal part of endoscope body, e.g. handles (A61B1/0052 takes precedence) · CPC title

• A61B1/00064

  Constructional details of the endoscope body · CPC title

• A61B1/00137 Primary

  End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs · CPC title

• A61B1/018

  for receiving instruments · CPC title

• A61B10/04

  Endoscopic instruments, e.g. catheter-type instruments · CPC title