# US 10,478,322 B2 · Retractor device for transforming a retrieval device from a deployed position to a delivery position

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- Number: US 10,478,322 B2
- Document ID: US10478322B2
- Status: Granted
- Kind: B2
- Application number: 15/626,265
- Filed: 2017-06-19
- Published: 2018-12-20
- Granted: 2019-11-19
- Earliest claimed: 2017-06-19
- Assignees: Covidien LP
- Applicants: Covidien LP
- Inventors: Francis Bernard; Kenneth Brown
- Web page: https://patentgrep.com/patent/US10478322B2

## CPC

- A61F 2/90: characterised by a net-like or mesh-like structure
- A61B 17/12118: {for positioning in conjunction with a stent}
- 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 2017/00469: {for insertion of instruments, e.g. guide wire, optical fibre}
- A61B 2017/2212: {having a closed distal end, e.g. a loop}
- A61B 2017/2215: {having an open distal end}
- A61B 2017/3435: {using everted sleeves}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Devices and methods for transforming a covered retrieval device from a deployed position to a delivery position for re-use are disclose herein. A retractor device may include, for example, a tubular structure defining a channel and configured to slidably receive a retrieval device. A method for transforming a retrieval device may include, for example, (a) positioning a retrieval device in a deployed position within a channel of a retractor device, (b) securing a part of the cover against a surface of the retractor, and (c) while securing the cover, advancing the retrieval device distally through the tubular structure to expose a capture structure of the retrieval device.

## Claims

### Claim 1

A kit for retrieving material from a body of a subject, the kit comprising:
a retrieval device including an elongated shaft and a retrieval assembly coupled to a distal zone of the elongated shaft, wherein—
the retrieval assembly includes a capture structure and a cover,
the cover has a first portion coupled to the distal zone of the elongated shaft and a free second portion, and
the cover has a first position in which the second portion extends proximally from the first portion, a second position in which the second portion extends distally from the first portion, and the cover surrounds at least a portion of the capture structure in the second position; and
a retractor having a tubular structure that defines a channel configured to slidably receive the retrieval device, wherein the tubular structure has a length no greater than twice a length of the capture structure measured along a longitudinal axis, and wherein the retractor is configured to extend distally beyond the capture structure to facilitate moving the cover from the second position after deployment to the first position for redeployment.

### Claim 2 (depends on 1)

The kit of claim 1 wherein the retractor includes a longitudinal slot extending the entire length of the tubular structure, and wherein the slot has a width at least as great as the outer diameter of the elongated shaft such that the elongated shaft can pass laterally through the slot and into the channel.

### Claim 3 (depends on 2)

The kit of claim 2 wherein the device further includes a handle having a planar shape and coupled to the tubular structure such that the handle is perpendicular relative to a plane extending through the longitudinal slot.

### Claim 4 (depends on 1)

The kit of claim 1 wherein the channel further includes a stop sized to allow the elongated shaft to pass through the stop and to inhibit proximal movement of the retrieval assembly when the elongated shaft is pulled proximally.

### Claim 5 (depends on 1)

The kit of claim 1 wherein the retractor includes a longitudinal slot extending the entire length of the tubular structure and onto a proximal portion of the tubular structure, wherein the slot has a width at least as great as the outer diameter of the elongated shaft such that the elongated shaft can pass laterally through the slot and into the channel, and wherein the proximal portion of the tubular structure is configured to inhibit proximal movement of the retrieval assembly when the elongated shaft is pulled proximally.

### Claim 6 (depends on 1)

The kit of claim 1 wherein at least one of the capture structure and the cover is a mesh.

### Claim 7 (depends on 1)

The kit of claim 1 wherein the capture structure is a stent and the cover is a braid.

### Claim 8 (depends on 1)

The kit of claim 1 wherein the length of the capture structure is greater than the length of the tubular structure.

### Claim 9 (depends on 1)

The kit of claim 1 wherein the device further includes a handle configured to be gripped by a user when the cover is moved from the second position to the first position for redeployment.

### Claim 10 (depends on 9)

The kit of claim 9 wherein the handle is coupled to the tubular structure nearer to a proximal portion of the tubular structure than a distal portion of the tubular structure.