# US 11,998,187 B2 · Suture method

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- Number: US 11,998,187 B2
- Document ID: US11998187B2
- Status: Granted
- Kind: B2
- Application number: 17/472,164
- Filed: 2021-09-10
- Published: 2023-03-16
- Granted: 2024-06-04
- Earliest claimed: 2021-09-10
- Assignees: Olympus Corporation; National Cancer Center
- Applicants: Olympus Corporation; National Cancer Center
- Inventors: Chisato Karasawa; Satoru Nonaka; Ichiro Oda
- Web page: https://patentgrep.com/patent/US11998187B2

## CPC

- A61B 17/0469: {Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery}
- A61B 17/072: for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B 17/0487: {Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks (suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122)}
- A61B 17/0218: {for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/083: {Clips, e.g. resilient}
- A61B 17/29: Forceps for use in minimally invasive surgery
- A61B 18/082: {Probes or electrodes therefor}
- A61B 2017/00269: {endoscopic mucosal resection EMR}
- A61B 2017/00296: {mounted on an endoscope}
- A61B 2017/0034: {adapted to be inserted through a working channel of an endoscope}
- A61B 2017/00818: {Treatment of the gastro-intestinal system}
- A61B 2017/06052: {Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle}
- A61B 2017/07257: {characterised by its anvil}
- A61B 2017/07271: {characterised by its cartridge}
- A61B 2017/07278: {characterised by its sled or its staple holder}
- A61B 2018/00595: {Cauterization}
- A61B 2018/1412: {Blade}
- A61B 2090/3937: {Visible markers}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A suture method includes a first arrangement step of using a first treatment device including first/second grasping pieces to hook the first grasping piece to a first position of peripheral tissues of a lesion; a second arrangement step of hooking the second grasping piece to a second position of the peripheral tissues; a grasping step of grasping the first position and the second position while pressing the first position and the second position to the peripheral tissues; a retracting step of retracting the lesion site toward a proximal end side of the first treatment device while drawing the first position and the second position grasped by the first treatment device; and a suturing step of suturing a first suturing position at an external side of the first position and a second suturing position at an external side of the second position in the peripheral tissues.

## Claims

### Claim 1

A suture method for suturing peripheral tissues of a lesion site, the method comprising:
cauterizing the peripheral tissues of the lesion site to form a first marking and a second marking, the first marking and the second marking being positioned opposite to each other across an entirety of the lesion site;
putting a first grasping piece of a forceps in the first marking;
putting a second grasping piece of the forceps in the second marking;
grasping the entirety of the lesion site by the first grasping piece and the second grasping piece while the entirety of the lesion site is between the first grasping piece and the second grasping piece;
retracting the forceps toward a proximal direction of the forceps while the entirety of the lesion site is grasped between the first grasping piece and the second grasping piece; and
suturing a first suturing position of the peripheral tissues of the lesion site at an external side of the first marking and the second marking relative to the lesion site in a radial direction.

### Claim 2 (depends on 1)

The suture method according to claim 1, further comprising:
positioning the forceps such that the lesion site is aligned with a longitudinal axis of the forceps.

### Claim 3 (depends on 1)

The suture method according to claim 1, further comprising:
cauterizing the peripheral tissues of the lesion site to form a third marking, wherein the third marking is positioned external to the first grasping piece and the second grasping piece when the first grasping piece is put in the first marking and the second grasping piece is put in the second marking.

### Claim 4 (depends on 3)

The suture method according to claim 3, wherein the first marking and the second marking are formed deeper than the third marking in a depth direction of the lesion site.

### Claim 5 (depends on 4)

The suture method according to claim 4, wherein the first marking and the second marking are formed by cauterizing a mucosal layer and a submucosa layer of the peripheral tissues of the lesion site.

### Claim 6 (depends on 3)

The suture method according to claim 3, wherein the first marking and the second marking are longer than the third marking in a width direction of the lesion site.

### Claim 7 (depends on 1)

The suture method according to claim 1, wherein at least one of the first marking and the second marking is formed along a direction that is inclined with respect to a surface of the peripheral tissues of the lesion site such that a depth of the marking from the surface increases toward the lesion site.

### Claim 8 (depends on 1)

The suture method according to claim 1, wherein at least one of the first marking and the second marking is formed along a direction that is inclined with respect to a surface of the peripheral tissues of the lesion site such that a depth of the marking from the surface decreases toward the lesion site.

### Claim 9 (depends on 1)

The suture method according to claim 1, wherein the suturing of the first suturing position is performed by a medical stapler.

### Claim 10 (depends on 1)

The suture method according to claim 1, wherein the peripheral tissues of the lesion site are located at an outside of the lesion site.