# US 11,304,714 B2 · Tissue specimen retrieval device with assisted deployment

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- Number: US 11,304,714 B2
- Document ID: US11304714B2
- Status: Granted
- Kind: B2
- Application number: 16/878,423
- Filed: 2020-05-19
- Published: 2021-11-25
- Granted: 2022-04-19
- Earliest claimed: 2020-05-19
- Assignees: Covidien LP
- Applicants: Covidien LP
- Inventors: Jacob C. Baril; Saumya Banerjee; Justin J. Thomas; Roy J. Pilletere; Matthew A. Dinino
- Web page: https://patentgrep.com/patent/US11304714B2

## CPC

- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/221: Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)}
- A61B 2017/00287: {Bags for minimally invasive surgery}
- A61B 2017/00986: {Malecots, e.g. slotted tubes, of which the distal end is pulled to deflect side struts}
- A61B 2017/00991: {Telescopic means}
- A61B 2017/2212: {having a closed distal end, e.g. a loop}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A tissue specimen retrieval device includes a first shaft having a pair of slots defined in a distal end thereof and a pair of windows defined proximally of the pair of respective slots. A second shaft is included having a bag brim attached thereto, the second shaft telescopically movable within the first shaft between a retracted position, wherein the bag brim is disposed within the first shaft and a partially deployed position wherein the bag brim partially deploys from the first shaft forming an enclosure for supporting the tissue bag thereon. A pair of hook members is included each having an arm, a first end engaged to the bag brim and a free end including a hook at a distal end thereof. Upon deployment, the hook of each hook member engages a respective window allowing each respective arm to pivot outwardly within respective slots to fully deploy the bag brim.

## Claims

### Claim 1

A tissue specimen retrieval device, comprising:
a first shaft including a pair of elongated slots defined in a distal end thereof and a pair of corresponding windows defined proximally of the pair of respective slots;
a second shaft including a bag brim attached thereto, the second shaft telescopically movable within the first shaft between a retracted position, wherein the bag brim is disposed within the first shaft and a partially deployed position wherein the bag brim at least partially deploys distally from the first shaft forming a substantially circular enclosure for supporting a tissue specimen bag thereon; and
a pair of hook members each having an arm, a first end operably engaged to the bag brim and a free end including a hook at a distal end thereof, wherein, upon deployment, the hook of each hook member engages a respective window defined in the first shaft allowing each respective arm of each hook member to pivot outwardly within respective slots defined within the first shaft member to fully deploy the bag brim.

### Claim 2 (depends on 1)

The tissue specimen retrieval device according to claim 1, wherein the hook members are attached to opposing sides of the bag brim.

### Claim 3 (depends on 1)

The tissue specimen retrieval device according to claim 1, wherein the bag brim is made from a material selected from a group consisting of polymers, plastics, composite materials, surgical stainless steel, and aluminum.

### Claim 4 (depends on 1)

The tissue specimen retrieval device according to claim 1, wherein each hook member is attached to the bag brim by a rivet.

### Claim 5 (depends on 1)

The tissue specimen retrieval device according to claim 1, wherein the hook of each hook member includes geometry to facilitate removal from each window upon retraction of the bag brim within the first shaft.

### Claim 6

A tissue specimen retrieval device, comprising:
a first shaft including a pair of elongated slots defined in a distal end thereof and a pair of corresponding windows defined proximally of the pair of respective slots;
a second shaft including a bag brim attached thereto, the second shaft telescopically movable within the first shaft between a retracted position, wherein the bag brim is disposed within the first shaft and a first deployed position wherein the bag brim at least partially deploys distally from the first shaft forming a substantially circular enclosure for supporting an open end of a tissue specimen bag thereon; and
a pair of hook members each having an arm, a first end operably engaged to the bag brim and a free end including a hook at a distal end thereof, wherein, upon deployment from the first deployed position to a second deployed position, the hook of each hook member engages a respective window defined in the first shaft allowing each respective arm of each hook member to pivot outwardly within respective slots defined within the first shaft member to more fully deploy the bag brim and maximize the open end of the tissue specimen bag.

### Claim 7 (depends on 6)

The tissue specimen retrieval device according to claim 6, wherein the hook members are attached to opposing sides of the bag brim.

### Claim 8 (depends on 6)

The tissue specimen retrieval device according to claim 6, wherein the bag brim is made from a material selected from a group consisting of polymers, plastics, composite materials, surgical stainless steel, and aluminum.

### Claim 9 (depends on 6)

The tissue specimen retrieval device according to claim 6, wherein each hook member is attached to the bag brim by a rivet.

### Claim 10 (depends on 6)

The tissue specimen retrieval device according to claim 6, wherein the hook of each hook member includes geometry to facilitate removal from each window upon retraction of the bag brim within the first shaft.