Insertion tool with a dissector

Patent metadata

Field	Value
Publication number	US-12137937-B2
Application number	US-202117230610-A
Country	US
Kind code	B2
Filing date	Apr 14, 2021
Priority date	Apr 9, 2019
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

An insertion tool for creating a subcutaneous pocket and implanting a device in the pocket. The tool may include a cannula extending from a handle, a dissector tip disposed at a distal end of the cannula, and a rod. The cannula and dissector tip may create the pocket. The cannula may include a passage and an opening into the passage, and the cannula may be disposed in the passage and move along the passage between a retracted position and an extended position. The rod and the cannula may be configured such that, when the rod is at the retracted position, the cannula holds the device in the passage, and as the cannula moves from the extended position to the retracted position, the rod forces the device through the opening at the distal end of the cannula, at least partially out of the cannula, and at least partially into the pocket.

First claim

The invention claimed is:

1. An insertion tool for creating a subcutaneous pocket below a skin surface and implanting a device in the subcutaneous pocket, the insertion tool comprising:
a handle defining a cavity therein;
a tunneling tube defining a passage opening into the cavity of the handle;
a dissector comprising a blunt tip and configured to:
(i) create the subcutaneous pocket;
(ii) move from an extended position, wherein the blunt tip protrudes out of a distal end of the tunneling tube, to a retracted position, wherein the blunt tip is disposed in the cavity of the handle; and
(iii) rotate from an operating position disposed on a longitudinal axis of the tunneling tube to an idle position disposed off the longitudinal axis of the tunneling tube; and

an insertor comprising a cannula and configured to:
(i) hold the device in a passage of the cannula;
(ii) rotate from an idle position disposed off the longitudinal axis of the tunneling tube to an operating position disposed on the longitudinal axis of the tunneling tube; and
(iii) move from a retracted position to an extended position and release the device out of the tunneling tube to deploy the device in the subcutaneous pocket.

2. The insertion tool of claim 1 , wherein the inserter is configured to hold hydration fluid in the passage of the cannula.

3. The insertion tool of claim 1 , wherein the handle comprises a hinge rotatably coupled to the dissector and the inserter.

4. The insertion tool of claim 1 , wherein the inserter is configured to move from the retracted position to the extended position when the inserter is set at the operating position.

5. The insertion tool of claim 1 , further comprising a slider knob configured to cause the inserter and the dissector to move between the retracted and extended positions.

6. The insertion tool of claim 5 , further comprising a backward movement prevention mechanism that, after the inserter is rotated to the operating position, prevents backward movement of the slider knob so that the cannula of the inserter is capable of only moving toward the extended position of the inserter.

7. The insertion tool of claim 5 , further comprising a ratchet that, after the inserter is rotated to the operating position, prevents backward movement of the slider knob so that the cannula of the inserter is capable of only moving toward the extended position of the inserter.

8. The insertion tool of claim 1 , wherein the dissector comprises a first rod configured to move along the cavity of the handle and the passage of the tunneling tube, and the blunt tip is coupled to the first rod such that the first rod is configured to move the blunt tip along the cavity of the handle and the passage of the tunneling tube between the retracted and extended positions.

9. The insertion tool of claim 1 , wherein the insertor comprises a second rod configured to move along the cavity of the handle and the passage of the tunneling tube, and the cannula comprises a first end configured to hold and release the device and a second end coupled to the second rod such that the second rod is configured to move the cannula along the cavity of the handle and the passage of the tunneling tube between the retracted and extended positions.

10. A method for creating a subcutaneous pocket below a skin surface and implanting a device in the subcutaneous pocket, the method comprising:
using a dissector of an insertion tool with the dissector in an extended position in which a blunt tip of the dissector protrudes out of a distal end of a tunneling tube to create the subcutaneous pocket, wherein the tunneling tube defines a passage opening into a cavity of a handle of the insertion tool;
moving the dissector from the extended position to a retracted position in which the blunt tip is disposed in the cavity of the handle;
rotating the dissector from an operating position disposed on a longitudinal axis of the tunneling tube to an idle position disposed off the longitudinal axis of the tunneling tube;
using an inserter of the insertion tool to hold the device in a passage of a cannula of the inserter;
rotating the inserter from an idle position disposed off the longitudinal axis of the tunneling tube to an operating position disposed on the longitudinal axis of the tunneling tube; and
moving the inserter from a retracted position to an extended position, wherein moving the inserter from the retracted positon to the extended position releases the device out of the tunneling tube and deploys the device in the subcutaneous pocket.

11. The method of claim 10 , further comprises using the inserter to hold hydration fluid in the passage of the cannula.

12. The method of claim 10 , wherein rotating the dissector and rotating the inserter comprise using a hinge rotatably coupled to the dissector and the inserter.

13. The method of claim 10 , wherein moving the inserter from the retracted position to the extended position comprises moving the inserter from the retracted position to the extended position while the inserter is in the operating position.

14. The method of claim 10 , wherein moving the dissector from the extended position to the retracted position and moving the inserter from the retracted position to the extended position comprise using a slider knob to cause the inserter and the dissector to move.

15. The method of claim 14 , wherein moving the inserter from the retracted position to the extended position comprises preventing backward movement of the slider knob so that the cannula of the inserter is capable of only moving toward the extended position.

16. The method of claim 10 , wherein the dissector comprises a first rod configured to move along the cavity of the handle and the passage of the tunneling tube, and the blunt tip is coupled to the first rod such that the first rod is configured to move the blunt tip along the cavity of the handle and the passage of the tunneling tube between the retracted and extended positions.

17. The method of claim 10 , wherein the insertor comprises a second rod configured to move along the cavity of the handle and the passage of the tunneling tube, and the cannula comprises a first end configured to hold and release the device and a second end coupled to the second rod such that the second rod is configured to move the cannula along the cavity of the handle and the passage of the tunneling tube between the retracted and extended positions.

Assignees

• Senseonics Inc

Inventors

• Chavan Abhi
• Hays Bryan
• Citirik Erman

Classifications

• A61B2017/320044

  Blunt dissectors · CPC title

• A61B2017/00407

  Ratchet means · CPC title

• A61B2017/320056

  Tunnelers · CPC title

• A61B17/32

  Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) · CPC title

• A61B17/3496

  Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612) · CPC title