# US 11,432,845 B2 · Insertion tool with a dissector

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,432,845 B2
- Document ID: US11432845B2
- Status: Granted
- Kind: B2
- Application number: 16/844,043
- Filed: 2020-04-09
- Published: 2020-10-15
- Granted: 2022-09-06
- Earliest claimed: 2019-04-09
- Assignees: Senseonics, Incorporated
- Applicants: Senseonics, Incorporated
- Inventors: Abhi Chavan; Bryan Hays
- Web page: https://patentgrep.com/patent/US11432845B2

## CPC

- A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)}
- A61B 17/3468: {for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069)}
- A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement}
- A61B 5/14865: {invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors}
- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/32: 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})
- A61B 17/3496: {Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612)}
- A61B 2017/00367: {Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like}
- A61B 2017/320044: {Blunt dissectors}
- A61B 2017/320056: {Tunnelers}
- A61B 2017/3456: {blunt}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## 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.

## Claims

### Claim 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 extending from a first end of the handle and defining a passage opening into the cavity of the handle, and the tunneling tube is configured to move in an axial direction between an extended position and a retracted position;
a dissector comprising a blunt tip configured to move between a retracted position, wherein the blunt tip is disposed in the cavity of the handle, and an extended position, wherein the blunt tip protrudes out of a distal end of the tunneling tube, and the dissector is configured to create the subcutaneous pocket;
an insertor comprising a cannula configured to move between a retracted position, wherein the cannula is disposed in the cavity of the handle, and an extended position, wherein the cannula is at least partially disposed in the passage of the tunneling tube; and
an actuator disposed in the handle and operatively linked to the cannula, the dissector, and the insertor such that the actuator is configured to trigger the cannula, the blunt tip, and the insertor to move between their respective and extended positions;
wherein the tunneling tube and the cannula are configured such that, when the tunneling tube and the cannula are at their respective extended positions, the cannula holds the device in the passage of the tunneling tube, and, when the tunneling tube is at or near the retracted position, the cannula moves toward its retracted position and releases the device out of the tunneling tube to deploy the device in the subcutaneous pocket.

### Claim 2 (depends on 1)

The insertion tool of claim 1, wherein the dissector is configured to pivot from an operating position disposed along a first axis defined by the tunneling tube to an idle position disposed along a second axis, and the inserter is configured to pivot from an idle position disposed along a third axis to an operating position disposed along the first axis; and
wherein the second axis extends at a first acute angle with respect to the first axis, and the third axis extends at a second acute angle with respect to the first axis.

### Claim 3 (depends on 2)

The insertion tool of claim 2, wherein the handle comprises a hinge pivotably coupled to the dissector and the inserter.

### Claim 4 (depends on 3)

The insertion tool of claim 3, wherein the inserter is configured to pivot between the operating and idle positions when the cannula is set in its retracted position, and the tunneling tube is configured to move between its retracted and extended positions when the inserter is set at the operating position.

### Claim 5 (depends on 1)

The insertion tool of claim 1, wherein the actuator comprises a track extending along a portion of the handle and a slider knob configured to slide along the track and cause the tunneling tube, the blunt tip, and the cannula to move between their respective retracted and extended positions.

### Claim 6 (depends on 1)

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 of the dissector.

### Claim 7 (depends on 1)

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 of the insertor.