US6500182B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Minimally-invasive medical retrieval device
Assignee: Cook Urological Inc
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Filing: 1999-03-26
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Granted: 2002-12-31
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Expires: 2019-03-26
Abstract
Abstract A medical retrieval device 10 is disclosed comprising an elongated cylindrical member 11 that includes a continuum of a material 40, preferably a metal such as stainless steel or nitinol, that forms both the resilient grasping members 13 of retrieval basket 54, snare 26, or grasper forceps 23, and the proximal portion 21 or shaft of the device. The elongated cylindrical member can include a metal cannula 60 or solid rod 62 into which a series of laterally adjacent longitudinal slots 15 are cut or formed in the distal portion 37 of the elongated cylindrical member to form a plurality of resilient grasping members. These slots may be cut in a spiral configuration to produce a helical basket 69. The resilient grasping members in the original compact shape 17 are formed into an enlarged shape 18 to create a workspace volume 28 for the capture, manipulation and/or retrieval of an object within a patient. An external constraining device 14, such as an outer sheath, is used for introducing of the device and to compress the resilient grasping members over a calculus 24 or other object into a substantially closed position 30. An internal actuating member 29 within the passage 12 of the elongated cylindrical member can provide an alternative method of opening and closing the retrieval device. Using a small thin-walled cannula, retrieval devices of the present invention can fit through the accessory channel 46 of a small endoscope, such as an ureteroscope 44 while still having a sufficient lumen size to accommodate an ancillary treatment device 25 such as a standard 200 micron laser fiber or lithotripsy wire. The present invention also includes a retrieval device made from a plastic tube 32 having encased reinforcement wires 31. By removing all material 66 except the reinforcement wires from the distal portion of the elongated cylindrical member, the exposed wires can become the resilient grasping members of a basket or forceps.
Inventors
- 👤 Thomas L. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212; A61B2017/2215
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
228 words
An elongated medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member comprising a first continuum of a first metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of first metallic material and having a circumferential wall of substantially uniform thickness; the distal portion forming a plurality of resilient grasping members, the resilient grasping members manipulable between a compact shape and an enlarged shape, wherein resilient grasping members of the enlarged shape are in a relaxed condition, and wherein the edges of adjacent resilient grasping members are spaced apart when in the compact condition, and wherein the resilient grasping members, each having a distal end and a proximal end are conjoined about the distal ends thereof; and an external cylinder of a second continuum of material to constrain the distal portion of the elongated cylindrical member in to the compact shape, the external cylinder being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 2
Dependent Claim
228 words
An elongated medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member comprising a first continuum of a first metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of first metallic material and having a circumferential wall of substantially uniform thickness; the distal portion forming a plurality of resilient grasping members, the resilient grasping members manipulable between a compact shape and an enlarged shape, wherein resilient grasping members of the enlarged shape are in a relaxed condition, and wherein the edges of adjacent resilient grasping members are spaced apart when in the compact condition, and wherein the resilient grasping members, each having a distal end and a proximal end are conjoined about the distal ends thereof; and an external cylinder of a second continuum of material to constrain the distal portion of the elongated cylindrical member in to the compact shape, the external cylinder being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 3
Dependent Claim
18 words
The device of claim 1 , wherein the elongated cylindrical member further contains a passage extending longitudinally therein.
Claim 4
Dependent Claim
31 words
The device of claim 1 , wherein the resilient grasping members are conjoined at the distal ends thereof by a distal closed cylinder further comprising the continuum of first metallic material.
Claim 5
Dependent Claim
151 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member including a proximal closed cylinder, the closed cylinder comprising a continuum of a first metallic material extending therealong and having a circumferential wall of substantially uniform thickness; the distal portion forming a plurality of resilient grasping members formed from the continuum of fist metallic material, the resilient grasping members manipulable between a compact shape and an enlarged shape, wherein the resilient grasping members of the enlarged shape are in a relaxed condition, wherein edges of adjacent resilient grasping members are spaced apart when in the compact condition, wherein the resilient grasping members include space therebetween configured for insertion of an object therethrough, and wherein the resilient grasping members, each having a distal end and a proximal end are conjoined about the distal ends thereof.
Claim 6
Dependent Claim
151 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member including a proximal closed cylinder, the closed cylinder comprising a continuum of a first metallic material extending therealong and having a circumferential wall of substantially uniform thickness; the distal portion forming a plurality of resilient grasping members formed from the continuum of fist metallic material, the resilient grasping members manipulable between a compact shape and an enlarged shape, wherein the resilient grasping members of the enlarged shape are in a relaxed condition, wherein edges of adjacent resilient grasping members are spaced apart when in the compact condition, wherein the resilient grasping members include space therebetween configured for insertion of an object therethrough, and wherein the resilient grasping members, each having a distal end and a proximal end are conjoined about the distal ends thereof.
Claim 7
Dependent Claim
21 words
The medical retrieval device of claim 4 , wherein the resilient grasping members further comprise tips made from a different material.
Claim 8
Dependent Claim
30 words
The device of claim 4 , wherein the resilient grasping members are conjoined at the distal ends thereof by a distal closed cylinder further comprising the continuum of metallic material.
Claim 9
Dependent Claim
83 words
The device of claim 4 , further comprising an external constraining mechanism to constrain the distal portion of the elongated cylindrical member into the compact shape, the external constraining mechanism being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 10
Dependent Claim
137 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member comprising a single continuum of a metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of metallic material and having a circumferential wall of substantially uniform thickness; and the distal portion forming a plurality of resilient grasping members, the resilient grasping members comprising the continuum of metallic material and manipulable between a compact shape and an enlarged shape, wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape, and wherein the resilient grasping members, each having a distal end and a proximal end, are conjoined about the distal ends thereof.
Claim 11
Dependent Claim
137 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member comprising a single continuum of a metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of metallic material and having a circumferential wall of substantially uniform thickness; and the distal portion forming a plurality of resilient grasping members, the resilient grasping members comprising the continuum of metallic material and manipulable between a compact shape and an enlarged shape, wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape, and wherein the resilient grasping members, each having a distal end and a proximal end, are conjoined about the distal ends thereof.
Claim 12
Dependent Claim
15 words
The device of claim 8 , wherein the elongated cylindrical member contains a passage therein.
Claim 13
Dependent Claim
221 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member containing a passage therein and including at least one continuum of a first metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of first metallic material and having a circumferential wall of substantially uniform thickness; the distal portion including a plurality of resilient grasping members, the resilient grasping members comprising the continuum of first metallic material and manipulable between a compact shape and an enlarged shape, wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape, and wherein the resilient grasping members, each having a distal end and a proximal end, are conjoined about the distal ends thereof; and an external constraining mechanism to constrain the distal portion of the elongated cylindrical member into the compact shape, the external constraining mechanism being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 14
Dependent Claim
221 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member containing a passage therein and including at least one continuum of a first metallic material extending therealong; the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of first metallic material and having a circumferential wall of substantially uniform thickness; the distal portion including a plurality of resilient grasping members, the resilient grasping members comprising the continuum of first metallic material and manipulable between a compact shape and an enlarged shape, wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape, and wherein the resilient grasping members, each having a distal end and a proximal end, are conjoined about the distal ends thereof; and an external constraining mechanism to constrain the distal portion of the elongated cylindrical member into the compact shape, the external constraining mechanism being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 15
Dependent Claim
306 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising a single continuum of a metallic material extending therealong and further containing a passage therein; the proximal portion of the elongated cylindrical member including the proximal closed cylinder, the proximal closed cylinder comprising the continuum of metallic material and having a circumferential wall of substantially uniform thickness; the distal portion including at least three resilient grasping members formed from the continuum of metallic material, the resilient grasping members forming a retrieval basket, wherein the proximal end of each resilient grasping member is circumferentially offset from the distal end thereof such that the medical retrieval device is a helical basket, the retrieval basket manipulable between a compact shape and an enlarged shape, wherein the resilient grasping members of the enlarged shape are in a relaxed condition, wherein edges of adjacent resilient grasping members are spaced apart when in the compact condition, wherein the resilient grasping members include space therebetween configured for insertion of an object therethrough, wherein the resilient grasping members are configured to create a workspace volume for engaging an object therein, and wherein the resilient members each having a distal end and a proximal end, are conjoined about the distal ends thereof; and an external constraining mechanism to constrain the distal portion of the elongated cylindrical member into the compact shape, the external constraining mechanism being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 16
Dependent Claim
306 words
A medical retrieval device comprising: an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising a single continuum of a metallic material extending therealong and further containing a passage therein; the proximal portion of the elongated cylindrical member including the proximal closed cylinder, the proximal closed cylinder comprising the continuum of metallic material and having a circumferential wall of substantially uniform thickness; the distal portion including at least three resilient grasping members formed from the continuum of metallic material, the resilient grasping members forming a retrieval basket, wherein the proximal end of each resilient grasping member is circumferentially offset from the distal end thereof such that the medical retrieval device is a helical basket, the retrieval basket manipulable between a compact shape and an enlarged shape, wherein the resilient grasping members of the enlarged shape are in a relaxed condition, wherein edges of adjacent resilient grasping members are spaced apart when in the compact condition, wherein the resilient grasping members include space therebetween configured for insertion of an object therethrough, wherein the resilient grasping members are configured to create a workspace volume for engaging an object therein, and wherein the resilient members each having a distal end and a proximal end, are conjoined about the distal ends thereof; and an external constraining mechanism to constrain the distal portion of the elongated cylindrical member into the compact shape, the external constraining mechanism being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.
Claim 17
Dependent Claim
100 words
A medical retrieval device, comprising: a continuum of a metallic material comprising a first cylindrical member at a proximal end and a second cylindrical member at a distal end of the continuum, said cylindrical members separated by a plurality of resilient grasping members, wherein the cylindrical members have a circumferential wall of substantially uniform thickness, the resilient grasping members are manipulable between a compact shape and an enlarged shape, and wherein the resilient grasping members of the enlarged shape are in a relaxed condition and wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape.
Claim 18
Dependent Claim
100 words
A medical retrieval device, comprising: a continuum of a metallic material comprising a first cylindrical member at a proximal end and a second cylindrical member at a distal end of the continuum, said cylindrical members separated by a plurality of resilient grasping members, wherein the cylindrical members have a circumferential wall of substantially uniform thickness, the resilient grasping members are manipulable between a compact shape and an enlarged shape, and wherein the resilient grasping members of the enlarged shape are in a relaxed condition and wherein edges of adjacent resilient grasping members are spaced apart when in the compact shape.
Claim 19
Dependent Claim
19 words
The device of claim 12 , further comprising a passage extending longitudinally through the first and second cylindrical members.
Claim 20
Dependent Claim
19 words
The device of claim 13 , wherein an outer diameter of the continuum is as small as 0.33 mm.
Claim 21
Dependent Claim
18 words
The device of claim 13 , wherein the passage extending longitudinally is at least 200 microns in diameter.
Claim 22
Dependent Claim
58 words
The device of claim 12 , further comprising an external constraining mechanism longitudinally slidable about the continuum to deploy the resilient grasping members to the enlarged shape or to recompress the resilient grasping members to the compact shape or to a substantially closed position for capture or capture and retrieval of an object from within a human body.
Claim 23
Dependent Claim
36 words
The device of claim 12 , wherein the resilient grasping members are aligned parallel with a longitudinal axis of the continuum or arranged in a spiral between the first cylindrical member and the second cylindrical member.
Claim 24
Dependent Claim
52 words
A method of using a medical retrieval for retrieving an object within a human body, the method comprising: providing the device of claim 12 ; manipulating the resilient grasping members to an enlarged shape for capturing the object; and manipulating the resilient grasping members to a compact shape for grasping the object.
References Cited (Backward Citations)
US2556783A
Cited
US4046150A
Cited
US4347846A
Cited
US4393872A
Cited
US4607620A
Cited
US4611594A
Cited
US4625726A
Cited
US4807626A
Cited
US5030201A
Cited
EP0512729A1
Cited
US5376100A
Cited
US5376094A
Cited
US5397320A
Cited
EP0743456A2
Cited
WO1997035522A1
Cited
WO1997039674A1
Cited
EP0818180A2
Cited
DE19722429A1
Cited
US6174318B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-12-30 | 2006-07-01 | 2006-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-30 | 2010-07-01 | 2010-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-30 | 2014-07-01 | 2014-12-31 | $7700.00 | Window Closed / Lapsed |