US6280451B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable basket
Assignee: Boston Scientific Scimed Inc
•
Filing: 2000-05-24
•
Granted: 2001-08-28
•
Expires: 2020-05-24
Abstract
Abstract A medical retrieval device includes a basket formed of two or more loops. The basket may be used to retrieve material (e.g., a urinary stone) from a body. The basket opens and closes for end-encapsulation of a stone and is strengthened by support members that interconnect the basket loops. A captured stone may be released from the basket with the basket still in the body by opening the loops.
Inventors
- 👤 James S. Bates
- 👤 James A. Teague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B17/32; A61B17/3205; A61B17/32056; A61B2017/2215
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
178 words
A medical device, comprising: a proximal handle; a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath; and at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops being moveable between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material, at least one of the loops having a different length from the base to its distal end than at least one other of the loops, the loops moving between the closed and open positions by transitioning the loops between the collapsed position and the other position.
Claim 2
Dependent Claim
178 words
A medical device, comprising: a proximal handle; a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath; and at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops being moveable between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material, at least one of the loops having a different length from the base to its distal end than at least one other of the loops, the loops moving between the closed and open positions by transitioning the loops between the collapsed position and the other position.
Claim 3
Dependent Claim
13 words
The device of claim 1 wherein said sheath moves relative to the loops.
Claim 4
Dependent Claim
27 words
The device of claim 1 further comprising at least one elongated member extending from the handle through the lumen of the sheath, and joined to the loops.
Claim 5
Dependent Claim
18 words
The device of claim 1 wherein each of the loops comprise an inner surface and an outer surface.
Claim 6
Dependent Claim
25 words
The device of claim 4 wherein at least a portion of the inner surface of at least one of the loops comprises a concave surface.
Claim 7
Dependent Claim
25 words
The device of claim 4 wherein at least a portion of the inner surface of at least one of the loops comprises a roughened surface.
Claim 8
Dependent Claim
14 words
The device of claim 6 wherein the roughened inner surface comprises a serrated surface.
Claim 9
Dependent Claim
14 words
The device of claim 6 wherein the roughened inner surface comprises an etched surface.
Claim 10
Dependent Claim
14 words
The device of claim 6 wherein the roughened inner surface comprises a toothed surface.
Claim 11
Dependent Claim
12 words
The device of claim 1 wherein the loops comprise a flat wire.
Claim 12
Dependent Claim
17 words
The device of claim 1 further comprising a mesh or membrane disposed within each of the loops.
Claim 13
Dependent Claim
16 words
The device of claim 1 wherein the loops are formed from a single piece of material.
Claim 14
Dependent Claim
11 words
The device of claim 1 wherein the loops comprise stainless steel.
Claim 15
Dependent Claim
13 words
The device of claim 1 wherein the loops comprise a shape memory material.
Claim 16
Dependent Claim
20 words
The device of claim 1 further comprising one or more support members disposed between the loops to provide structural support.
Claim 17
Dependent Claim
19 words
The device of claim 1 wherein mechanisms for fragmenting or moving the material are deployed within the sheath lumen.
Claim 18
Dependent Claim
17 words
The device of claim 1 wherein the loops are energizeable to deliver energy to excise a tissue.
Claim 19
Independent Claim
242 words
A method for retrieving biological material from a body, comprising the steps of: inserting into a body a medical retrieval device comprising a proximal handle, a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath, and at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops move between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material, at least one of the loops having a different length from the base to its distal end than at least one other of the loops, the loops moving between the closed and open positions by transitioning the loops between the collapsed position and the other position; placing the loops in the position in which they extend from the distal end of the sheath and out of the lumen of the sheath; capturing the biological material with the loops; and, withdrawing the device from the body to remove the biological material from the body.
Claim 20
Independent Claim
242 words
A method for retrieving biological material from a body, comprising the steps of: inserting into a body a medical retrieval device comprising a proximal handle, a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath, and at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops move between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material, at least one of the loops having a different length from the base to its distal end than at least one other of the loops, the loops moving between the closed and open positions by transitioning the loops between the collapsed position and the other position; placing the loops in the position in which they extend from the distal end of the sheath and out of the lumen of the sheath; capturing the biological material with the loops; and, withdrawing the device from the body to remove the biological material from the body.
Claim 21
Dependent Claim
177 words
A medical device, comprising: a proximal handle; a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath; at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops being moveable between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material; an elongated member disposed within the lumen of the sheath; and at least one wire operably attached to at least one loop and to the elongated member, movement of the loops between the closed position and open positions being achieved by movement of the elongated member.
Claim 22
Dependent Claim
177 words
A medical device, comprising: a proximal handle; a sheath extending distally from the handle and including a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath; at least two opposing loops having a collapsed position in which the loops are collapsed within the lumen of the sheath and another position in which the loops extend from the distal end of the sheath and out of the lumen, the loops being joined at a base and unattached to each other at their distal ends, the loops being moveable between an open position and a closed position with the loops being closer together at their distal ends when in the closed position than when in the open position to allow capture and release of material; an elongated member disposed within the lumen of the sheath; and at least one wire operably attached to at least one loop and to the elongated member, movement of the loops between the closed position and open positions being achieved by movement of the elongated member.
Claim 23
Dependent Claim
27 words
The device of claim 19 wherein movement of the loops to a closed position is achieved by axial movement of the elongated member in a distal direction.
Claim 24
Dependent Claim
27 words
The device of claim 19 wherein movement of the loops to an open position is achieved by axial movement of the elongated member in a proximal direction.
Claim 25
Dependent Claim
13 words
The device of claim 19 wherein said sheath moves relative to the loops.
Claim 26
Dependent Claim
27 words
The device of claim 19 further comprising at least one elongated member extending from the handle through the lumen of the sheath, and joined to the loops.
Claim 27
Dependent Claim
18 words
The device of claim 19 wherein each of the loops comprise an inner surface and an outer surface.
Claim 28
Dependent Claim
25 words
The device of claim 24 wherein at least a portion of the inner surface of at least one of the loops comprises a concave surface.
Claim 29
Dependent Claim
25 words
The device of claim 24 wherein at least a portion of the inner surface of at least one of the loops comprises a roughened surface.
Claim 30
Dependent Claim
14 words
The device of claim 26 wherein the roughened inner surface comprises a serrated surface.
Claim 31
Dependent Claim
14 words
The device of claim 26 wherein the roughened inner surface comprises an etched surface.
Claim 32
Dependent Claim
14 words
The device of claim 26 wherein the roughened inner surface comprises a toothed surface.
Claim 33
Dependent Claim
12 words
The device of claim 19 wherein the loops comprise a flat wire.
Claim 34
Dependent Claim
17 words
The device of claim 19 further comprising a mesh or membrane disposed within each of the loops.
Claim 35
Dependent Claim
16 words
The device of claim 19 wherein the loops are formed from a single piece of material.
Claim 36
Dependent Claim
11 words
The device of claim 19 wherein the loops comprise stainless steel.
Claim 37
Dependent Claim
13 words
The device of claim 19 wherein the loops comprise a shape memory material.
Claim 38
Dependent Claim
20 words
The device of claim 19 further comprising one or more support members disposed between the loops to provide structural support.
Claim 39
Dependent Claim
19 words
The device of claim 19 wherein mechanisms for fragmenting or moving the material are deployed within the sheath lumen.
Claim 40
Dependent Claim
17 words
The device of claim 19 wherein the loops are energizeable to deliver energy to excise a tissue.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-08-27 | 2005-02-26 | 2005-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-27 | 2009-02-26 | 2009-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-27 | 2013-02-26 | 2013-08-28 | $7700.00 | Window Closed / Lapsed |