DEVICES FOR TISSUE SEPARATION AND RELATED METHODS OF USE

• US 20140276790A1
• Filed: 03/12/2014
• Published: 09/18/2014
• Est. Priority Date: 03/13/2013
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: RAYBIN, Samuel, SMITH, Paul, KAPPEL, Gary S., SUON, Naroun
• Application Number:
  US14/206,353
• Publication Number:
  US 20140276790A1
• Time in Patent Office: Days
• US Class Current: 606/41
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2017/0034 adapted to be inserted through a working channel of an endoscope
• CPC Class Codes: A61B 2017/320048 Balloon dissectors
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00232 having an irregular shape
• CPC Class Codes: A61B 2018/00244 adapted to separate target tissue from other tissue
• CPC Class Codes: A61B 2018/00261 arranged in a line
• CPC Class Codes: A61B 2018/00482 Digestive system
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2018/1427 with a beveled end
• CPC Class Codes: A61B 2090/3925 ultrasonic
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 2218/002 Irrigation

Abstract

The present disclosure is directed to a medical instrument. The medical instrument may include a shaft having a distal end configured to cauterize tissue. An expandable member may be positioned adjacent the distal end of the shaft. The expandable member may be configured for deployment between a collapsed configuration and an expanded configuration.

Claims

1. A medical instrument comprising:

a shaft having a distal end configured to cauterize tissue; and

an expandable member configured for insertion between a first tissue layer and a second tissue layer adjacent the first tissue layer, wherein the expandable member is configured to expand from a collapsed state to an expanded state to separate the first tissue layer from the second tissue layer, and wherein at least a portion of the expandable member has a substantially flat base in the expanded state.

2. The medical instrument of claim 1, wherein a body of the expandable member has a substantially tapered shape in the expanded state.

3. The medical instrument of claim 1, wherein at least a portion of the expandable member has a wedge-shaped profile in the expanded state.

4. The medical instrument of claim 1, wherein the shaft has a cautery tip.

5. The medical instrument of claim 1, wherein the expandable member includes a plurality of inflation chambers.

6. The medical instrument of claim 1, wherein the expandable member includes a substantially flat base and a body having a substantially flat top surface, wherein the substantially flat top surface and the substantially flat base meet at an edge that is straight and oriented perpendicular to a longitudinal axis of the shaft.

7. The medical instrument of claim 1, further including a channel extending through the shaft to a distal opening, wherein the channel is configured to deliver fluid.

12. The method of claim 1, wherein the first tissue layer is the mucosal layer, and the second tissue layer is the muscularis layer.

8. A method of separating tissue layer, comprising:

positioning a distal portion of a medical instrument, including a shaft having a distal end configured to cauterize tissue, and an expandable member adjacent the distal end of the shaft, adjacent a tissue site;

inserting the distal portion between a first tissue layer and a second tissue layer at the tissue site; and

expanding the expandable member from a collapsed configuration to an expanded configuration to separate the first tissue layer from the second tissue layer, wherein at least a portion of the expandable member has a wedge-shaped profile in the expanded configuration.

9. The method of claim 8, further including:

collapsing the expandable member;

positioning the expandable member at a second location of the tissue site; and

expanding the expandable member to separate the first tissue layer from the second tissue layer.

10. The method of claim 8, further including, prior to expanding the expandable member, injecting fluid between the first tissue layer and the second tissue layer.

11. The method of claim 8, further including, after expanding the expandable member, inserting a treatment device between the first tissue layer and the second tissue layer to dissect a portion of the first tissue layer.

13. The method of claim 8, further including, prior to inserting the distal portion between the first tissue layer and the second tissue layer, cutting the first tissue layer with the distal end of the instrument.

14. A tool comprising:

a cap member having a proximal end and a distal end, wherein the proximal end is configured to be secured to a distal portion of an introduction sheath, and wherein at least one of the cap member or a portion of the cap member is transparent;

a tip extending distally from the distal end of the cap member; and

at least one expandable member secured to the cap member, wherein the expandable member is configured to transition between a collapsed state and an expanded state.

15. The tool of claim 14, wherein the tip is configured to cauterize tissue.

16. The tool of claim 14, wherein the tip includes an atraumatic configuration.

17. The tool of claim 14, wherein at least one of the at least one expandable member or a portion of the at least one expandable member is transparent.

18. The tool of claim 14, wherein the tip is configured to move independently of the cap member.

19. The tool of claim 14, further including a reciprocation mechanism for longitudinally reciprocating the cap member.

20. The tool of claim 19, wherein the reciprocation mechanism extends through the introduction sheath and operatively connects to the cap member, and drives reciprocation of the cap member longitudinally relative to the introduction sheath.