US5782807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasably locking introducer devices
Assignee: Technology Holding Co II
•
Filing: 1995-10-20
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Granted: 1998-07-21
•
Expires: 2015-10-20
Abstract
Abstract A releasably locking dilator/sheath medical introducer device is provided having a dilator with a non-circular cross-sectional shape to enable insertion of a catheter, guide wire and the like into a patient. More particularly, the invention provides an introducer device that has dilator with a non-circular cross-sectional shape, particularly a substantially oval cross-sectional shape, and that comprises a releasable lock for the dilator and the circumscribing sheath components of the device. In preferred embodiments, the introducer device also includes a visual indicator and/or a tactile indicator to conveniently inform a user of the device whether the dilator/sheath assembly is in a locked or unlocked position. In another aspect, a releasably locking introducer device is provided that has a dilator that can rotate within a circumscribing sheath component wherein the dilator includes a proximal end component that can rotate around the longitudinal axis of the device relative to and independently of the dilator and sheath components to releasably lock the dilator within the circumscribing sheath.
Inventors
- 👤 John Falvai
- 👤 Frank Bimbo
- 👤 Richard S. Riddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:06
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0097; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; A61M2025/0004; A61M2025/0006; A61M2025/0008
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
97 words
A medical introducer device suitable for inserting a catheter or guide wire into a patient comprising: a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a non-circular shape for at least a portion of its length which inhibits rotation of the dilator within the circumscribing sheath, a component that completely circumscribes the dilator, the component releasably locking and unlocking the dilator and sheath components and can be operationally secured on the dilator with the dilator separated from the sheath.
Claim 2
Dependent Claim
97 words
A medical introducer device suitable for inserting a catheter or guide wire into a patient comprising: a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a non-circular shape for at least a portion of its length which inhibits rotation of the dilator within the circumscribing sheath, a component that completely circumscribes the dilator, the component releasably locking and unlocking the dilator and sheath components and can be operationally secured on the dilator with the dilator separated from the sheath.
Claim 3
Dependent Claim
19 words
The device of claim 1 wherein the component is press fitted or snap fitted onto the dilator proximal end.
Claim 4
Dependent Claim
17 words
The device of claim 1 wherein the dilator has a non-circular shape for essentially its entire length.
Claim 5
Dependent Claim
25 words
The device of claim 3 wherein the dilator has a circular cross-sectional shape at a hub portion of the dilator and the dilator distal end.
Claim 6
Dependent Claim
12 words
The device of claim 3 wherein the dilator is oval-shaped in cross-section.
Claim 7
Dependent Claim
24 words
The device of claim 1 wherein the component rotates with respect to the dilator to provide a releasable lock of the dilator and sheath.
Claim 8
Dependent Claim
32 words
The device of claim 6 wherein at least one surface of the component mates with at least one surface on the sheath to provide a releasable lock of the dilator and sheath.
Claim 9
Dependent Claim
16 words
The device of claim 1 wherein the component provides a releasable lock by a threaded mechanism.
Claim 10
Dependent Claim
17 words
The device of claim 1 wherein the component provides a releasable lock by a luer lock mechanism.
Claim 11
Dependent Claim
118 words
A medical introducer device suitable for inserting a catheter or guidewire into a patient comprising: (a) a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a cross-sectional shape that enables axial rotation of the dilator within the circumscribing sheath; and (b) a component that can be operationally secured on the dilator with the dilator separated from the sheath, the component being capable of rotating independently of the dilator to releasably lock and unlock the dilator and sheath when the sheath circumscribes the dilator and without relative axial rotation of the dilator and sheath, and the component completely circumscribing the dilator.
Claim 12
Dependent Claim
118 words
A medical introducer device suitable for inserting a catheter or guidewire into a patient comprising: (a) a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a cross-sectional shape that enables axial rotation of the dilator within the circumscribing sheath; and (b) a component that can be operationally secured on the dilator with the dilator separated from the sheath, the component being capable of rotating independently of the dilator to releasably lock and unlock the dilator and sheath when the sheath circumscribes the dilator and without relative axial rotation of the dilator and sheath, and the component completely circumscribing the dilator.
Claim 13
Dependent Claim
19 words
The device of claim 10 wherein the component is press fitted or snap fitted onto the dilator proximal end.
Claim 14
Dependent Claim
13 words
The device of claim 10 wherein the dilator has a circular cross-sectional shape.
Claim 15
Dependent Claim
24 words
The device of claim 10 wherein the component rotates with respect to the dilator to provide a releasable lock of the dilator and sheath.
Claim 16
Dependent Claim
32 words
The device of claim 13 wherein at least one surface of the component mates with at least one surface on the sheath to provide a releasable lock of the dilator and sheath.
Claim 17
Dependent Claim
16 words
The device of claim 10 wherein the component provides a releasable lock by a threaded mechanism.
Claim 18
Dependent Claim
17 words
The device of claim 10 wherein the component provides a releasable lock by a luer lock mechanism.
Claim 19
Dependent Claim
63 words
A medical introducer device suitable for inserting a catheter or guide wire into a patient comprising: a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a non-circular shape for essentially the entire dilator length and which inhibits rotation of the dilator within the circumscribing sheath.
Claim 20
Dependent Claim
63 words
A medical introducer device suitable for inserting a catheter or guide wire into a patient comprising: a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator and the sheath adapted to circumscribe the dilator, the dilator having a non-circular shape for essentially the entire dilator length and which inhibits rotation of the dilator within the circumscribing sheath.
Claim 21
Dependent Claim
12 words
The device of claim 17 wherein the dilator is oval-shaped in cros-ssection.
Claim 22
Dependent Claim
25 words
The device of claim 17 wherein the dilator has a circular cross-sectional shape at a hub portion of the dilator and the dilator distal end.
Claim 23
Dependent Claim
21 words
The device of claim 17 wherein the device comprises a component that releasably locks and unlocks the dilator and sheath components.
Claim 24
Dependent Claim
28 words
The device of claim 17 wherein the device comprises a component that completely circumscribes the dilator proximal end and releasably locks and unlocks the dilator and sheath components.
Claim 25
Dependent Claim
32 words
The device of claim 17 wherein the device comprises a component that press fitted or snap fitted onto the dilator proximal end and releasably locks and unlocks the dilator and sheath components.
Claim 26
Dependent Claim
28 words
The device of claim 17 wherein the device comprises a component that rotates with respect to the dilator to provide a releasable lock of the dilator and sheath.
Claim 27
Dependent Claim
16 words
The device of claim 17 wherein the dilator and sheath releasably lock by a threaded mechanism.
Claim 28
Dependent Claim
17 words
The device of claim 17 wherein the component provides a releasable lock by a luer lock mechanism.
Claim 29
Independent Claim
132 words
A method for inserting a catheter or guide wire into a patient comprising: (a) providing an introducer device comprising a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator, the sheath circumscribing the dilator, a component that completely circumscribes the dilator, the component releasably locking and unlocking the dilator and sheath components and can be operationally secured on the dilator with the dilator separated from the sheath; (b) inserting the distal end of the device into a patient while the dilator and sheath are releasably locked; (c) rotating the rotatable dilator component with respect to the dilator longitudinal axis to unlock the dilator and sheath; and (d) withdrawing the dilator from the sheath and inserting a catheter or guide wire through the sheath into the patient.
Claim 30
Independent Claim
132 words
A method for inserting a catheter or guide wire into a patient comprising: (a) providing an introducer device comprising a releasably locking dilator and sheath, the sheath having a bore adapted to receive the dilator, the sheath circumscribing the dilator, a component that completely circumscribes the dilator, the component releasably locking and unlocking the dilator and sheath components and can be operationally secured on the dilator with the dilator separated from the sheath; (b) inserting the distal end of the device into a patient while the dilator and sheath are releasably locked; (c) rotating the rotatable dilator component with respect to the dilator longitudinal axis to unlock the dilator and sheath; and (d) withdrawing the dilator from the sheath and inserting a catheter or guide wire through the sheath into the patient.
Claim 31
Dependent Claim
18 words
The method of claim 26 wherein the dilator has a non-circular shape for essentially the entire dilator length.
Claim 32
Dependent Claim
18 words
The method of claim 26 wherein the dilator has a circular shape for essentially the entire dilator length.
Claim 33
Dependent Claim
14 words
The method of claim 26 wherein the sheath is axially split after step (d).
Claim 34
Independent Claim
93 words
A method for introducing a catheter or guide wire into a patient comprising: (a) providing an introducer device comprising a releasably locking dilator and sheath, the sheath circumscribing the dilator, the dilator having a non-circular shape for essentially the entire dilator length and which inhibits rotation of the dilator within the circumscribing sheath; (b) inserting the distal end of the device into a patient while the dilator and sheath are releasably locked; and (c) withdrawing the dilator from the sheath and inserting a catheter or guide wire through the sheath into the patient.
Claim 35
Independent Claim
93 words
A method for introducing a catheter or guide wire into a patient comprising: (a) providing an introducer device comprising a releasably locking dilator and sheath, the sheath circumscribing the dilator, the dilator having a non-circular shape for essentially the entire dilator length and which inhibits rotation of the dilator within the circumscribing sheath; (b) inserting the distal end of the device into a patient while the dilator and sheath are releasably locked; and (c) withdrawing the dilator from the sheath and inserting a catheter or guide wire through the sheath into the patient.
Claim 36
Dependent Claim
14 words
The method of claim 30 wherein the sheath is axially split after step (d).
References Cited (Backward Citations)
US4233974A
Cited
US4596559A
Cited
US4966588A
Cited
US4772266A
Cited
US5160323A
Cited
US5064414A
Cited
US5290294A
Cited
US5279597A
Cited
US5275583A
Cited
US5391152A
Cited
US5437645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-20 | 2002-01-19 | 2002-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-20 | 2006-01-19 | 2006-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-20 | 2010-01-19 | 2010-07-21 | $7700.00 | Window Closed / Lapsed |