# US 11,896,336 B2 · Instrument for surgery

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- Number: US 11,896,336 B2
- Document ID: US11896336B2
- Status: Granted
- Kind: B2
- Application number: 17/084,349
- Filed: 2020-10-29
- Published: 2021-02-18
- Granted: 2024-02-13
- Earliest claimed: 2015-02-17
- Assignees: Livsmed Inc.
- Applicants: Livsmed Inc.
- Inventors: Jung Joo Lee; Hee Jin Kim
- Web page: https://patentgrep.com/patent/US11896336B2

## CPC

- A61B 17/0483: {Hand-held instruments for holding sutures (A61B17/0469 takes precedence; other holders for needles or sutures A61B17/06061; surgical forceps A61B17/28; surgical pincettes A61B17/30)}
- A61B 34/71: {Manipulators operated by drive cable mechanisms}
- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/29: Forceps for use in minimally invasive surgery
- A61B 17/2909: {Handles}
- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 2017/00314: {Separate linked members}
- A61B 2017/00323: {Cables or rods}
- A61B 2017/00424: {ergonomic, e.g. fitting in fist}
- A61B 2017/00438: {connectable to a finger}
- A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)}
- A61B 2017/00738: {part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon}
- A61B 2017/2904: {curved, but rigid}
- A61B 2017/2908: {Multiple segments connected by articulations}
- A61B 2017/291: {the position of the handle being adjustable with respect to the shaft}
- A61B 2017/2911: {rings}
- A61B 2017/2919: {details of linkages or pivot points}
- A61B 2017/2923: {Toothed members, e.g. rack and pinion}
- A61B 2017/2927: {the angular position of the head being adjustable with respect to the shaft}
- A61B 2017/2936: {Pins in guiding slots}
- A61B 2017/294: {Connection of actuating rod to jaw, e.g. releasable}
- A61B 2017/2943: {Toothed members, e.g. rack and pinion}
- A61B 2017/2944: {Translation of jaw members}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Provided is an instrument for surgery and, more specifically, to an instrument for surgery which can be manually operated in order to be used for laparoscopic surgery or various types of surgery.

## Claims

### Claim 1

A surgical instrument comprising:
a handle for receiving a user input for manipulating the instrument, wherein the handle includes a first handle member configured to rotate along a first input axis and a second handle member configured to rotate along a second input axis, wherein the first handle member includes a first elongated portion and the second handle member includes a second elongated portion, and the handle has an input angle defined by an angular relationship of the two elongated portions;
an end-effector for performing a surgical operation, wherein the end-effector includes a first jaw member and a second jaw member, each configured to rotate along an output axis,
wherein the first jaw member includes a first contact surface and the second jaw member includes a second contact surface, the first contact surface and the second contact surface are configured to face each other, and the end-effector has a closed configuration when the two surfaces are contacted to each other or an open configuration when the two surfaces are separated to each other; and
a pulley-wire mechanism for coupling, operatively, the handle and the end-effector, wherein the mechanism includes a first input pulley operatively connected to the first handle member, a first output pulley operatively connected to the first jaw member and operatively coupled to the first input pulley via a first wire, a second input pulley operatively connected to the second handle member, and a second output pulley operatively connected to the second jaw member and operatively coupled to the second input pulley via a second wire; and
wherein when the handle has the input angle being greater than a first predetermined angle, the end-effector has the open configuration and the user input inducing a rotation of at least one of the two handle members changes an angle between the two contact surfaces, and
when the handle has the input angle being smaller than the first predetermined angle, the end effector has the closed configuration and the user input inducing a rotation of at least one of the two handle members changes a pressure between the two contact surfaces.

### Claim 2 (depends on 1)

The surgical instrument according to the claim 1,
wherein the end effector has a grip configuration when the two surfaces are contacted to an object,
wherein when the handle has the input angle being greater than a second predetermined angle, the end effector has the open configuration and the user input inducing a rotation of at least one of the two handle members changes the angle between the two contact surfaces, and
when the handle has the input angle being smaller than the second predetermined angle, the end effector maintains the grip configuration and the user input inducing a rotation of at least one of the two handle members changes the pressure between the object and at least the one contact surfaces.

### Claim 3 (depends on 1)

The surgical instrument according to claim 1,
wherein when the handle has the input angle being greater than the first predetermined angle, the at least one of the first and the second wire is not elastically deformed,
when the handle has the input angle being smaller than the first predetermined angle, the at least one of the first and the second wire is elastically deformed.

### Claim 4 (depends on 3)

The surgical instrument according to claim 3,
wherein when the handle has the input angle being smaller than the first predetermined angle, the input angle is greater than a second predetermined angle to prevent plastic deformation of at least one of the first wire and the second wire.

### Claim 5 (depends on 4)

The surgical instrument according to claim 4,
wherein the second predetermined angle is formed in a state that the first handle member and the second handle member are in contact.

### Claim 6 (depends on 1)

The surgical instrument according to claim 1,
wherein when the end effector has the open configuration, a change of the input angle by the user input and a change of the angle between the first contact surface and the second contact surface maintain a linear relationship with each other,
when the end effector has closed configuration, a change of the input angle by the user input and a change of the pressure between the two surfaces have a linear relationship with each other.

### Claim 7 (depends on 1)

The surgical instrument according to claim 1,
wherein a force applied to the wires by the user input when the handle has the input angle being smaller than the first predetermined angle is greater than a force applied to the wires by the user input when the handle has the input angle being greater than the first predetermined angle.

### Claim 8 (depends on 1)

The surgical instrument according to claim 1,
Wherein when the handle has the input angle being greater than a second predetermined angle, the end effector further has an expansion configuration and the user input inducing a rotation of at least one of the two handle members changes an amount of elastic deformation of the wire.

### Claim 9 (depends on 1)

The surgical instrument according to claim 1,
wherein the handle further can rotate along a first yaw axis,
wherein the first jaw member and the second jaw member can rotate in the same direction along the output axis corresponding to the rotating of the handle along the first yaw axis,
wherein the pulley-wire mechanism further comprises a yaw input pulley operatively coupled to the first output pulley and the second output pulley via the first wire and the second wire,
when the yaw input pulley rotates over a third predetermined angle, the user input inducing a rotation of the yaw input pulley causes plastic deformation in at least one of the first wire and the second wire.

### Claim 10 (depends on 9)

The surgical instrument according to claim 9,
Wherein the yaw input pulley rotates less than a fourth predetermined angle to prevent plastic deformation on at least one of the first wire and the second wire.