# US 11,304,747 B2 · Rotatable snares and related methods

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- Number: US 11,304,747 B2
- Document ID: US11304747B2
- Status: Granted
- Kind: B2
- Application number: 15/811,747
- Filed: 2017-11-14
- Published: 2018-05-17
- Granted: 2022-04-19
- Earliest claimed: 2016-11-16
- Assignees: Boston Scientific Scimed, Inc.
- Applicants: Boston Scientific Scimed, Inc.
- Inventors: Heather A. Simani; Tara E. Deland; Kenneth R. Keene; Michael Powers; Mickael A. Jette
- Web page: https://patentgrep.com/patent/US11304747B2

## CPC

- A61B 18/149: {bow shaped or with rotatable body at cantilever end, e.g. for resectoscopes, or coagulating rollers}
- A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)}
- A61B 17/32056: {Surgical snare instruments (for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26)}
- A61B 2017/2929: {with a head rotatable about the longitudinal axis of the shaft}
- A61B 2018/00184: {Moving parts}
- A61B 2018/00202: {rotating}
- A61B 2018/0091: {Handpieces of the surgical instrument or device}
- A61B 2018/1407: {Loop}
- A61B 2018/141: {Snare}
- A61B 2018/1475: {Electrodes retractable in or deployable from a housing}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A medical device may include a handle, a sheath fixed relative to the handle, a longitudinal actuator movable relative to the handle, an end effector, a member extending proximally from the end effector through the sheath, with a portion of the member being fixed relative to the longitudinal actuator, and a rotation actuator. Movement of the rotation actuator may cause rotation of the member relative to the sheath, and movement of the longitudinal actuator may cause longitudinal movement of the member relative to the rotation actuator.

## Claims

### Claim 1

A medical device, comprising:
a handle;
a sheath fixed relative to the handle;
a longitudinal actuator movable relative to the handle;
an end effector;
a member extending proximally from the end effector through the sheath, a portion of the member being fixed relative to the longitudinal actuator;
a stopper fixed to the member and having a longitudinal length, wherein the stopper is disposed within the handle and positioned proximal relative to the sheath, and wherein the longitudinal length of the stopper defines a limit of distal movement of the end effector relative to the sheath; and
a rotation actuator;
wherein rotation of the rotation actuator causes rotation of the member relative to the sheath; and
wherein longitudinal movement of the longitudinal actuator causes longitudinal movement of the member relative to the rotation actuator.

### Claim 2 (depends on 1)

The device of claim 1, wherein the end effector is configured to conduct current to tissue during longitudinal movement of the longitudinal actuator and during rotation of the rotation actuator.

### Claim 3 (depends on 1)

The device of claim 1, wherein the rotation actuator is fixed in a longitudinal position relative to the sheath.

### Claim 4 (depends on 1)

The device of claim 1, wherein, when the longitudinal actuator is in a distal-most position, the rotation actuator is positioned distal to the longitudinal actuator.

### Claim 5 (depends on 1)

The device of claim 1, further comprising a rotation shaft around a portion of the member, wherein the rotation shaft includes a non-circular cross-sectional shape, and an interior lumen of the rotation actuator includes the same non-circular cross-sectional shape.

### Claim 6 (depends on 5)

The device of claim 5, wherein a distal portion of the rotation shaft includes the non-circular cross-sectional shape, and a proximal portion of the rotation shaft includes a different cross-sectional shape.

### Claim 7 (depends on 1)

The device of claim 1, wherein distal movement of the longitudinal actuator causes distal movement of the end effector; and
wherein the stopper is configured to abut against the rotation actuator to inhibit distal movement of the longitudinal actuator relative to the handle and the end effector relative to the sheath.

### Claim 8 (depends on 1)

The device of claim 1, wherein the end effector includes a snare.

### Claim 9 (depends on 1)

The device of claim 1, wherein the stopper is secured directly to the member.

### Claim 10 (depends on 1)

The device of claim 1, wherein the member is configured to move the stopper relative to the handle.

### Claim 11 (depends on 1)

The device of claim 1, further including a second sheath disposed within the sheath and positioned over the member, wherein the second sheath is configured to inhibit radial movement of the member within the sheath.

### Claim 12 (depends on 11)

The device of claim 11, wherein the rotation actuator is configured to rotate the member relative to the second sheath.

### Claim 13 (depends on 12)

The device of claim 12, wherein the second sheath is fixed to an exterior surface of the member or an interior surface of the sheath.

### Claim 14 (depends on 12)

The medical device of claim 12, wherein the second sheath is free-floating between an interior surface of the sheath and an exterior surface of the member.

### Claim 15 (depends on 11)

The medical device of claim 11, wherein the second sheath is configured to inhibit the member from bending within the sheath in response to longitudinal movement of the member.

### Claim 16

A medical device, comprising:
a handle;
a sheath fixed relative to the handle;
a longitudinal actuator movable relative to the handle;
an end effector;
a member extending proximally from the end effector through the sheath, a portion of the member being fixed relative to the longitudinal actuator;
a second sheath disposed within the sheath and positioned over the member, wherein the second sheath is movable relative to the member, and configured to inhibit radial movement of the member within the sheath; and
a rotation actuator;
wherein rotation of the rotation actuator causes rotation of the member relative to the sheath and the second sheath; and
wherein longitudinal movement of the longitudinal actuator causes longitudinal movement of the member relative to the rotation actuator.

### Claim 17 (depends on 16)

The medical device of claim 16, wherein the second sheath is fixed to an interior surface of the sheath.

### Claim 18 (depends on 16)

The medical device of claim 16, wherein the second sheath is free-floating between an interior surface of the sheath and an exterior surface of the member.

### Claim 19 (depends on 16)

The medical device of claim 16, wherein the second sheath is movable relative to the sheath.

### Claim 20

A medical device, comprising:
a handle;
a sheath extending distally from, and fixed relative to, the handle;
a longitudinal actuator movable relative to the handle;
an end effector;
a member extending proximally from the end effector through the sheath, a portion of the member being fixed relative to the longitudinal actuator;
a rotation actuator; and
a stopper fixed to the member and movable along the handle, wherein the stopper is positioned proximal to the sheath and the rotation actuator, and a longitudinal length of the stopper defines a limit of distal movement of the longitudinal actuator relative to the handle;
wherein rotation of the rotation actuator causes rotation of the member relative to the sheath; and
wherein longitudinal movement of the longitudinal actuator causes longitudinal movement of the member relative to the rotation actuator.