US4759748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guiding catheter
Assignee: Medtronic Inc
•
Filing: 1986-09-22
•
Granted: 1988-07-26
•
Expires: 2006-09-22
Abstract
Abstract A guiding catheter has incorporated toward its distal end, a flexible member capable of non-uniform elongation to cause the distal end portion to bend and straighten as desired so that it can be maneuvered through and accurately positioned in a tortuous, non-linear conduit containing branches, for example blood vessels. The flexible member comprises interconnected, and preferably braided, filaments with gaps between the filaments. The member has a first configuration that is axially lengthened and a second configuration that is axially shortened. Means are provided to move the member between its first and second configurations. Biasing means are provided to restrict axial lengthening along one side of the flexible member resulting in bending of the catheter tip.
Inventors
- 👤 James P. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0147
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
251 words
A guiding catheter for negotiating a tortuous, non-linear conduit, the catheter having a longitudinal axis, a proximal end, and a distal end, the catheter comprising: (a) an elongated anchor member having a distal portion and a proximal portion; (b) an elongated activating member having a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (c) a flexible member comprising interconnected filaments attached to the outer surface of the distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, said flexible member also comprising means for preventing axial lengthening of the flexible member along one side thereof, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter, and in the radially contracted configuration is substantially straight; and wherein relative axial movement between the anchor member and the activating member reversibily moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter.
Claim 2
Dependent Claim
251 words
A guiding catheter for negotiating a tortuous, non-linear conduit, the catheter having a longitudinal axis, a proximal end, and a distal end, the catheter comprising: (a) an elongated anchor member having a distal portion and a proximal portion; (b) an elongated activating member having a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (c) a flexible member comprising interconnected filaments attached to the outer surface of the distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, said flexible member also comprising means for preventing axial lengthening of the flexible member along one side thereof, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter, and in the radially contracted configuration is substantially straight; and wherein relative axial movement between the anchor member and the activating member reversibily moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter.
Claim 3
Dependent Claim
11 words
The device of claim 1 in which the filaments are braided.
Claim 4
Dependent Claim
12 words
The device of claim 1 in which the anchor member is tubular.
Claim 5
Dependent Claim
20 words
The device of claim 3 in which the activating member is at least partially exterior of the first anchor member.
Claim 6
Dependent Claim
21 words
The device of claim 4 in which the activating member is at least partially in the lumen of the anchor member.
Claim 7
Dependent Claim
16 words
The device of claim 5 in which the anchor and activating members are tubular and coaxial.
Claim 8
Dependent Claim
35 words
The device of claim 6 in which the flexible member is coaxial with the anchor and activating members and is attached to the exterior of the anchor member and the exterior of the activating member.
Claim 9
Dependent Claim
45 words
The device of claim 7 in which the flexible member has a distal and a proximal portion and the distal portion is attached to the distal portion of the activating member and the proximal portion is attached to the distal portion of the anchor member.
Claim 10
Dependent Claim
13 words
The device of claim 1 in which the activating member is a rod.
Claim 11
Dependent Claim
18 words
The device of claim 1 including stop means for limiting the degree of bending of the flexible member,
Claim 12
Independent Claim
311 words
A method for accessing a relatively inaccessible region of a tortuous non-linear conduit comprising the steps of: (a) entering the conduit with a guiding catheter having a longitudinal axis, a proximal end, and a distal end, the distal end being placed first into the conduit, the catheter comprising: (i) an elongated tubular anchor member; (ii) an elongated activating member, a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (iii) a flexible member comprising interconnected filaments attached to a distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, said flexible member also comprising means for preventing axial lengthening of the flexible member along one side thereof, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter and in the radially contracted configuration is substantially straight, and wherein the relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter; and (b) moving the catheter through the conduit toward the inaccessible region while causing relative axial movement between the inner and outer members for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter for accomodating non-linearity of the conduit.
Claim 13
Independent Claim
311 words
A method for accessing a relatively inaccessible region of a tortuous non-linear conduit comprising the steps of: (a) entering the conduit with a guiding catheter having a longitudinal axis, a proximal end, and a distal end, the distal end being placed first into the conduit, the catheter comprising: (i) an elongated tubular anchor member; (ii) an elongated activating member, a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (iii) a flexible member comprising interconnected filaments attached to a distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, said flexible member also comprising means for preventing axial lengthening of the flexible member along one side thereof, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter and in the radially contracted configuration is substantially straight, and wherein the relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter; and (b) moving the catheter through the conduit toward the inaccessible region while causing relative axial movement between the inner and outer members for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter for accomodating non-linearity of the conduit.
Claim 14
Dependent Claim
252 words
A guiding catheter for negotiating a tortuous, nonlinear conduit, the catheter having a longitudinal axis, a proximal end, and a distal end, the catheter comprising: (a) an elongated anchor member having a distal portion and a proximal portion; (b) an elongated activating member having a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (c) a flexible member comprising interconnected filaments attached to the outer surface of the distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location in a manner such that the point of attachment is offset from the center line of said flexible member, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the cathether is transverse to the longitudinal axis of the catheter, and in the radially contracted configuration is substantially straight; and wherein relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter.
Claim 15
Dependent Claim
252 words
A guiding catheter for negotiating a tortuous, nonlinear conduit, the catheter having a longitudinal axis, a proximal end, and a distal end, the catheter comprising: (a) an elongated anchor member having a distal portion and a proximal portion; (b) an elongated activating member having a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (c) a flexible member comprising interconnected filaments attached to the outer surface of the distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location in a manner such that the point of attachment is offset from the center line of said flexible member, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, wherein the flexible member in the radially expanded configuration is bent such that the distal end of the cathether is transverse to the longitudinal axis of the catheter, and in the radially contracted configuration is substantially straight; and wherein relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter.
Claim 16
Dependent Claim
11 words
The device of claim 12 in which the filaments are braided.
Claim 17
Dependent Claim
12 words
The device of claim 12 in which the anchor member is tubular.
Claim 18
Dependent Claim
20 words
The device of claim 14 in which the activating member is at least partially exterior of the first anchor member.
Claim 19
Dependent Claim
21 words
The device of claim 15 in which the activating member is at least partially in the lumen of the anchor member.
Claim 20
Dependent Claim
13 words
The device of claim 12 in which the activating member is a rod.
Claim 21
Dependent Claim
18 words
The device of claim 12 including stop means for limiting the degree of bending of the flexible member.
Claim 22
Independent Claim
312 words
A method for accessing a relatively inaccessible region of a tortuous non-linear conduit comprising the steps of: (a) entering the conduit with a guiding catheter having a longitudinal axis, a proximal end, and a distal end, the distal end being placed first into the conduit, the catheter comprising: (i) an elongated tubular anchor member; (ii) an elongated activating member, a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (iii) a flexible member comprising interconnected filaments attached to a distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location in a manner such that the point of attachment is offset from the center line of said flexible member, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, wherein the flexible mmeber in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter and in the radial contracted configuration is substantially straight, and wherein the relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter; and (b) moving the catheter through the conduit toward the inaccessable region while causing relative axial movement between the inner and outer members for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter for accomodating non-linearity of the conduit.
Claim 23
Independent Claim
312 words
A method for accessing a relatively inaccessible region of a tortuous non-linear conduit comprising the steps of: (a) entering the conduit with a guiding catheter having a longitudinal axis, a proximal end, and a distal end, the distal end being placed first into the conduit, the catheter comprising: (i) an elongated tubular anchor member; (ii) an elongated activating member, a distal portion and a proximal portion which extends beyond the proximal portion of the anchor member; and (iii) a flexible member comprising interconnected filaments attached to a distal portion of the anchor member at a first location and also attached to a distal portion of the activating member at a second location in a manner such that the point of attachment is offset from the center line of said flexible member, the first and second locations being axially spaced apart from each other, said anchor member being substantially rigid in compression where attached to the flexible member, the flexible member having a first configuration that is radially contracted and axially lengthened and a second configuration that is radially expanded and axially shortened, wherein the flexible mmeber in the radially expanded configuration is bent such that the distal end of the catheter is transverse to the longitudinal axis of the catheter and in the radial contracted configuration is substantially straight, and wherein the relative axial movement between the anchor member and the activating member reversibly moves the flexible member from one configuration to the other configuration for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter; and (b) moving the catheter through the conduit toward the inaccessable region while causing relative axial movement between the inner and outer members for varying the amount the distal end of the catheter is transverse to the longitudinal axis of the catheter for accomodating non-linearity of the conduit.
References Cited (Backward Citations)
US2610626A
Cited
US2650592A
Cited
US2845930A
Cited
US3105492A
Cited
US3050066A
Cited
DE1095457B
Cited
US3065750A
Cited
US3168092A
Cited
US3276448A
Cited
US3316557A
Cited
US3428046A
Cited
GB1205743A
Cited
US3509883A
Cited
US3562352A
Cited
US3568659A
Cited
US3592183A
Cited
US3588920A
Cited
US3773034A
Cited
US3726281A
Cited
US3788318A
Cited
JPS5172194A
Cited
US3996938A
Cited
US4022216A
Cited
US4245624A
Cited
GB1566674A
Cited
JPS53139390A
Cited
JPS5448989A
Cited
US4190909A
Cited
US4182339A
Cited
US4434797A
Cited
US4327720A
Cited
US4307772A
Cited
US4437857A
Cited
JPS55166148A
Cited
US4368739A
Cited
JPS5640423A
Cited
US4315512A
Cited
WO1981002110A1
Cited
US4413989A
Cited
US4448195A
Cited
JPS587263A
Cited
US4553545A
Cited
WO1983003732A1
Cited
SU1060190A1
Cited
WO1984001513A1
Cited
US4572186A
Cited
GB2150837A
Cited
US4586923A
Cited
US4650466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |