US5672158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter introducer
Assignee: Covidien AG
•
Filing: 1993-01-05
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Granted: 1997-09-30
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Expires: 2013-01-05
Abstract
Abstract A catheter introducer (31) which allows a dilator section (33) and a sheath section (32) to be engaged with and disengaged from each other promptly and smoothly. The catheter introducer (31) is composed of a sheath section (32) consisting of a sheath (35) and a sheath hub (34) and a dilator section (33) consisting of a dilator (38) and a dilator hub (36). The dilator hub (36) includes a flange (37) to cover the end of said sheath hub 34) in the state of engagement formed at the distal end of the dilator hub (36), a circular groove (40) formed in the internal circular portion of the flange (37) or in the external circular portion of the sheath hub (34), and a protrusion (39) to be engaged with said groove wherein the protrusion is formed on the external circular portion of the sheath hub or on the internal circular portion of the flange.
Inventors
- 👤 Yosuka Okada
- 👤 Munehito Kurimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0014; A61M25/01; A61M25/06; A61M25/0662; A61M25/0097
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
300 words
A catheter introducer comprising: a sheath section having distal and proximal end portions. a generally cylindrical sheath hub formed on said proximal end portion of said sheath section, said sheath hub including an outer circumference and a longitudinal passageway extending therethrough; a generally elongate and tubular sheath member formed on said distal end portion of said sheath section, a longitudinal passageway extending therethrough and said passageway extending in flow communication with said passageway of said sheath hub; a dilator member having distal and proximal end portions thereof and said dilator member being operatively associated with said sheath member in use; a generally cylindrical dilator hub formed on said end portion of said dilator member, said dilator hub including a flange means extending from a distal portion thereof and said flange being sized to receive at least a portion of said sheath hub therewith; and means for locking said sheath hub on said dilator hub wherein said means for locking includes at least one protrusion and at least one channel and one of said at least one protrusion and at least one channel is formed on said outer circumference of said sheath hub and the other of said at least one protrusion and at least one channel is formed on said flange member, said at least one protrusion and said at least one channel being formed to interlock such that rotational and longitudinal movement of said sheath hub and said dilator hub is prevented when said at least one protrusion and said at least one channel are interlocked and said at least one protrusion and said at least one channel are sized and oriented to unlock when a lateral force is applied to said dilator hub with respect to said sheath hub to release said sheath hub from said dilator hub.
Claim 2
Dependent Claim
300 words
A catheter introducer comprising: a sheath section having distal and proximal end portions. a generally cylindrical sheath hub formed on said proximal end portion of said sheath section, said sheath hub including an outer circumference and a longitudinal passageway extending therethrough; a generally elongate and tubular sheath member formed on said distal end portion of said sheath section, a longitudinal passageway extending therethrough and said passageway extending in flow communication with said passageway of said sheath hub; a dilator member having distal and proximal end portions thereof and said dilator member being operatively associated with said sheath member in use; a generally cylindrical dilator hub formed on said end portion of said dilator member, said dilator hub including a flange means extending from a distal portion thereof and said flange being sized to receive at least a portion of said sheath hub therewith; and means for locking said sheath hub on said dilator hub wherein said means for locking includes at least one protrusion and at least one channel and one of said at least one protrusion and at least one channel is formed on said outer circumference of said sheath hub and the other of said at least one protrusion and at least one channel is formed on said flange member, said at least one protrusion and said at least one channel being formed to interlock such that rotational and longitudinal movement of said sheath hub and said dilator hub is prevented when said at least one protrusion and said at least one channel are interlocked and said at least one protrusion and said at least one channel are sized and oriented to unlock when a lateral force is applied to said dilator hub with respect to said sheath hub to release said sheath hub from said dilator hub.
Claim 3
Dependent Claim
35 words
The catheter introducer of claim 1 wherein said flange member includes an inner surface thereon and said inner surface includes said other of said at least one protrusion or!and said at least one channel thereon.
Claim 4
Dependent Claim
30 words
The catheter introducer of claim 2 wherein said inner surface of said flange member includes a channel therein and said outer circumference of said sheath hub includes a protrusion thereon.
Claim 5
Dependent Claim
22 words
The catheter introducer of claim 3 wherein said protrusion extends along the entire circumference of said outer circumference of said sheath hub.
Claim 6
Dependent Claim
33 words
The catheter introducer of claim 3 wherein said flange member is sized to substantially extend along said outer circumference of said sheath hub and said flange includes a plurality of elongate slits therein.
Claim 7
Dependent Claim
47 words
The catheter introducer of claim 1 wherein said outer circumference of said sheath hub is formed as a regular polygon and said flange member is formed to include an interior surface having a regular polygonal surface which is complementary to said outer circumference of said sheath hub.
Claim 8
Dependent Claim
32 words
The catheter introducer of claim 1 wherein said outer circumference of said sheath hub includes said at least one channel thereon and said flange member includes said at least one protrusion thereon.
Claim 9
Dependent Claim
24 words
The catheter introducer of claim 7 wherein said flange member includes an inner surface thereon and said at least one protrusion extends substantially therealong.
Claim 10
Dependent Claim
18 words
The catheter introducer of claim 8 wherein said at least one protrusion is formed of a plurality of.
Claim 11
Dependent Claim
25 words
The catheter introducer of claim 7 wherein said at least one channel extends along the entire circumference of said outer circumference of said sheath hub.
Claim 12
Dependent Claim
16 words
The catheter introducer of claim 7 wherein said flange member includes a plurality of slits thereon.
Claim 13
Independent Claim
133 words
A method of using a catheter introducer, including the steps of; inserting a dilator member having a dilator hub and dilator thereon into a sheath member having a sheath hub and a sheath thereon such that a flange member on the dilator hub lockingly engages a portion of the sheath hub to prevent rotational and longitudinal movement therebetween; inserting a portion of the catheter introducer into the body of a patient by rotational and longitudinal movement of the catheter introducer; and applying a generally lateral force to the dilator member with respect to the sheath hub to release the flange member of the dilator member from the sheath hub of the sheath member to allow longitudinal movement between the dilator hub of the dilator member and the sheath hub of the sheath member.
Claim 14
Independent Claim
133 words
A method of using a catheter introducer, including the steps of; inserting a dilator member having a dilator hub and dilator thereon into a sheath member having a sheath hub and a sheath thereon such that a flange member on the dilator hub lockingly engages a portion of the sheath hub to prevent rotational and longitudinal movement therebetween; inserting a portion of the catheter introducer into the body of a patient by rotational and longitudinal movement of the catheter introducer; and applying a generally lateral force to the dilator member with respect to the sheath hub to release the flange member of the dilator member from the sheath hub of the sheath member to allow longitudinal movement between the dilator hub of the dilator member and the sheath hub of the sheath member.
Claim 15
Dependent Claim
31 words
The method of claim 12 wherein the application of a generally lateral force to the dilator hub releases a protrusion on the flange member from a channel on the sheath hub.
Claim 16
Dependent Claim
31 words
The method of claim 12 wherein the application of a generally lateral force to the dilator hub releases a channel on the flange member from a protrusion on the sheath hub.
Claim 17
Dependent Claim
26 words
The method of claim 12 wherein the application of a generally lateral force to the dilator hub expands one or more slits on the flange member.
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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) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |