US5192286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for retrieving materials from body lumens
Assignee: MMC/GATX PARTNERSHIP NO 1
•
Filing: 1991-07-26
•
Granted: 1993-03-09
•
Expires: 2011-07-26
Abstract
Abstract A retrieval catheter (10) for removing deleterious materials (S) from body lumens has an elongate catheter body (12) having a slack net (26) at its distal end (16). The slack net may be collapsed to facilitate introduction into the body lumen and opened in situ to permit capture and retrieval of the deleterious materials. A method for removing ureteral stones from the ureter is described.
Inventors
- 👤 Cu N. Phan
- 👤 Marshall L. Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/22; A61B17/221; A61F; A61F2/00; A61F2/01; A61F2/0105; A61B17/0218; A61B17/22004; A61B17/22012; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B2017/00831; A61B2017/0084; A61B2017/00849; A61B2017/2212
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
73 words
A retrieval catheter comprising: a hollow elongate body having proximal and distal ends; a flexible loop member, having first and second securing ends, secured to the distal end of the body by the first securing end; a slack net secured within the flexible loop; and means for opening and collapsing the loop, whereby the slack net can be opened in order to capture material and closed in order to secure the captured material.
Claim 2
Dependent Claim
73 words
A retrieval catheter comprising: a hollow elongate body having proximal and distal ends; a flexible loop member, having first and second securing ends, secured to the distal end of the body by the first securing end; a slack net secured within the flexible loop; and means for opening and collapsing the loop, whereby the slack net can be opened in order to capture material and closed in order to secure the captured material.
Claim 3
Dependent Claim
41 words
A retrieval catheter as in claim 1, wherein the means for opening and collapsing the loop comprises means attached to the second securing end of the loop member for drawing the first and second securing ends together to open the net.
Claim 4
Dependent Claim
31 words
A retrieval catheter as in claim 2, wherein the means for drawing the two ends of the loop together comprises a pull wire which is slidably mounted within the elongate body.
Claim 5
Dependent Claim
15 words
A retrieval catheter as in claim 1, wherein the slack net comprises a permeable fabric.
Claim 6
Dependent Claim
16 words
A retrieval catheter as in claim 4, wherein the slack net comprises an elastic nylon fabric.
Claim 7
Dependent Claim
27 words
A retrieval catheter as in claim 1 wherein the second securing end of the loop member is attached to the means for opening and collapsing the loop.
Claim 8
Dependent Claim
123 words
A retrieval catheter comprising: an elongate body having proximal and distal ends; a pull wire having proximal and distal ends and being slidably mounted within the elongate body, wherein the distal end of the pull wire extends distally of the distal end of the said body; a flexible loop member, having first and second securing ends, wherein the first securing end is attached to the distal end of the elongate body and the second securing end is attached to the pull wire near the distal end of said pull wire; and a slack net attached to the flexible loop, whereby the net can be shifted between an open and a closed configuration by axially shifting the pull wire relative to the elongate body.
Claim 9
Dependent Claim
123 words
A retrieval catheter comprising: an elongate body having proximal and distal ends; a pull wire having proximal and distal ends and being slidably mounted within the elongate body, wherein the distal end of the pull wire extends distally of the distal end of the said body; a flexible loop member, having first and second securing ends, wherein the first securing end is attached to the distal end of the elongate body and the second securing end is attached to the pull wire near the distal end of said pull wire; and a slack net attached to the flexible loop, whereby the net can be shifted between an open and a closed configuration by axially shifting the pull wire relative to the elongate body.
Claim 10
Dependent Claim
29 words
A retrieval catheter as in claim 7, further comprising means at the proximal end of the elongate body for axially shifting the pull wire relative to the elongate body.
Claim 11
Dependent Claim
16 words
A retrieval catheter as in claim 8, wherein the axially shifting means is a three-ring actuator.
Claim 12
Dependent Claim
24 words
A retrieval catheter as in claim 7, wherein the elongate body is a flexible tube having a central lumen which receives the pull wire.
Claim 13
Dependent Claim
29 words
A retrieval catheter as in claim 7, wherein the pull wire is one of a hollow tube, a solid core wire, a twisted strand wire, or a braided wire.
Claim 14
Dependent Claim
17 words
A retrieval catheter as in claim 7, wherein the flexible loop member has a lubricous outer surface.
Claim 15
Dependent Claim
16 words
A retrieval catheter as in claim 12, wherein the flexible loop has a hydrophilic outer surface.
Claim 16
Dependent Claim
15 words
A retrieval catheter as in claim 7, wherein the slack net comprises a permeable material.
Claim 17
Dependent Claim
16 words
A retrieval catheter as in claim 14, wherein the slack net comprises an elastic nylon fabric.
Claim 18
Dependent Claim
18 words
A retrieval catheter as in claim 14, wherein the slack net comprises material coated with a hydrophilic material.
Claim 19
Dependent Claim
16 words
A retrieval catheter as in claim 16, where the slack net comprises an elastic nylon fabric.
Claim 20
Dependent Claim
19 words
A retrieval catheter as in claim 14, wherein the slack net comprises a material made from thin metallic threads.
Claim 21
Independent Claim
116 words
A method for retrieving material in a body lumen, said method comprising: introducing a hollow catheter body to the lumen, said catheter body having a collapsed slack net attached to a loop having two ends, one end being secured to a distal end of the catheter body; moving the collapsed slack net past the material; opening the slack net so that said net will extend across a portion of the cross section of the body lumen greater than a cross section of the catheter; manipulating the slack net and optionally the catheter body; capturing material within the opened slack net; collapsing the slack net on the captured material; and withdrawing the catheter body from the lumen.
Claim 22
Independent Claim
116 words
A method for retrieving material in a body lumen, said method comprising: introducing a hollow catheter body to the lumen, said catheter body having a collapsed slack net attached to a loop having two ends, one end being secured to a distal end of the catheter body; moving the collapsed slack net past the material; opening the slack net so that said net will extend across a portion of the cross section of the body lumen greater than a cross section of the catheter; manipulating the slack net and optionally the catheter body; capturing material within the opened slack net; collapsing the slack net on the captured material; and withdrawing the catheter body from the lumen.
Claim 23
Dependent Claim
24 words
A method as in claim 19, wherein the body lumen is the ureter and the material captured is ureteral stones or other deleterious material.
Claim 24
Dependent Claim
25 words
A method as in claim 19, wherein the body lumen is the biliary tract and the material captured is biliary stones or other deleterious material.
Claim 25
Dependent Claim
25 words
A method as in claim 19, wherein the body lumen is a blood vessel and the material removed is atheroma or blood clot or emboli.
Claim 26
Dependent Claim
24 words
A method as in claim 19, wherein the body lumen is a bronchus and the material is a foreign body or other deleterious material.
Claim 27
Dependent Claim
24 words
A method as in claim 19, wherein the body lumen is an esophagus and the material is a foreign body or other deleterious material.
Claim 28
Dependent Claim
23 words
A method as in claim 19, wherein the body lumen is a bladder and the material is a stone or other deleterious material.
Claim 29
Dependent Claim
31 words
A method as in claim 19, further comprising the step of using an additional endoscopic device to break up the captured material within the slack net before withdrawing the catheter body.
References Cited (Backward Citations)
US156477A
Cited
US460940A
Cited
US1677671A
Cited
US2918919A
Cited
US3008467A
Cited
US3108593A
Cited
US3108594A
Cited
US3472230A
Cited
US3566874A
Cited
US3726281A
Cited
US3908661A
Cited
US4046149A
Cited
US4030503A
Cited
DE3522649A1
Cited
US4807626A
Cited
US4706671A
Cited
US4650466A
Cited
US4893621A
Cited
US4873978A
Cited
US5013310A
Cited
DE3913935A1
Cited
DE3913936A1
Cited
US5108406A
Cited
US5122147A
Cited
US5147371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-08 | 1996-09-07 | 1997-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-08 | 2000-09-07 | 2001-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-08 | 2004-09-07 | 2005-03-09 | $7700.00 | Window Closed / Lapsed |