US5520643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable access devices
Assignee: Michigan TransTech Corp
•
Filing: 1995-06-06
•
Granted: 1996-05-28
•
Expires: 2015-06-06
Abstract
Abstract An implantable access device which permits the introduction of an external filament such as a catheter, guide wire or optical fiber into a patient for communication with an internal catheter located within the body of the patient. The device includes a housing having an inlet opening, an outlet opening and a passageway communicating between the openings. The inlet opening is generally funnel shaped and guides the external filament into the passageway. A valve assembly normally remains closed prevents the flow of fluids through the passageway. When open, the valve assembly enables the filament to communicate with the internal catheter. The device is provided with a mechanism that limits the extent to which the filament can be inserted through the device. The device also includes a separate perimeter sealing mechanism which seals around the perimeter of an inserted filament as well as a mechanism which accommodates bending of the filament within the device so as to ensure that the filament is properly received within the device. Finally, the device includes features which prevent the filament from engaging the internal catheter in the event the filament does not enter the inlet opening when inserted into the patient.
Inventors
- 👤 William D. Ensminger
- 👤 Robert F. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:24
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M39/0208; A61M2039/0036; A61M2039/0081; A61M2039/0211; A61M2039/0214; A61M2039/062; A61M2039/0633; A61M2039/0673; A61M2039/0686
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
An implantable access device which permits the introduction of an external filament such as a trocar, catheter, guide wire or optical fiber into a patient for communication with an internal catheter located within the body of the patient, said device comprising: a housing having portions defining an inlet opening, an outlet opening and a passageway communicating therebetween, said inlet opening being generally funnel shaped and guiding an external filament inserted percutaneously into said passageway, said outlet opening being defined in a nipple adapted for having the implanted catheter attached thereto; shield means connected to said housing for shielding the internal catheter from engagement with an external filament in the event that the external filament fails to enter into said inlet opening after being percutaneously inserted into the patient; and at least one valve assembly which normally remains closed, said valve assembly located so as to be in communication with said passageway to provide resistance to the flow of fluids through said device, said passageway and said valve assembly when closed, said valve assembly being openable to enable the external filament to communicate with the internal catheter.
Claim 2
Dependent Claim
186 words
An implantable access device which permits the introduction of an external filament such as a trocar, catheter, guide wire or optical fiber into a patient for communication with an internal catheter located within the body of the patient, said device comprising: a housing having portions defining an inlet opening, an outlet opening and a passageway communicating therebetween, said inlet opening being generally funnel shaped and guiding an external filament inserted percutaneously into said passageway, said outlet opening being defined in a nipple adapted for having the implanted catheter attached thereto; shield means connected to said housing for shielding the internal catheter from engagement with an external filament in the event that the external filament fails to enter into said inlet opening after being percutaneously inserted into the patient; and at least one valve assembly which normally remains closed, said valve assembly located so as to be in communication with said passageway to provide resistance to the flow of fluids through said device, said passageway and said valve assembly when closed, said valve assembly being openable to enable the external filament to communicate with the internal catheter.
Claim 3
Dependent Claim
20 words
An implantable access device as set forth in claim 1 wherein said shield means is integrally formed with said housing.
Claim 4
Dependent Claim
20 words
An implantable access device as set forth in claim 1 wherein said shield means is unitarily formed with said housing.
Claim 5
Dependent Claim
24 words
An implantable access device as set forth in claim 1 wherein said shield means is unitarily formed on an exterior surface of said housing.
Claim 6
Dependent Claim
26 words
An implantable access device as set forth in claim 1 wherein said shield means is adapted to deflect the external filament away from the internal catheter.
Claim 7
Dependent Claim
31 words
An implantable access device as set forth in claim 1 wherein said shield means includes a curved surface generally transversely oriented to an axis along which the external filament is inserted.
Claim 8
Dependent Claim
34 words
An implantable access device as set forth in claim 1 wherein said shield means includes two curved surfaces which are each generally transversely oriented to an axis along which the external filament is inserted.
Claim 9
Dependent Claim
32 words
An implantable access device as set forth in claim 7 wherein said curved surfaces direct the external filament generally laterally with respect to the axis along which the external filament is inserted.
Claim 10
Dependent Claim
41 words
An implantable access device as set forth in claim 1 wherein said shield means includes a leading edge and a pair of divergent surfaces proceeding away from said leading edge, said divergent surfaces diverging generally laterally away from the internal catheter.
References Cited (Backward Citations)
FR1296652A
Cited
US3288137A
Cited
US3402710A
Cited
US3565078A
Cited
US3699956A
Cited
US4181132A
Cited
US4387879A
Cited
US4190040A
Cited
US4230109A
Cited
US4256102A
Cited
US4314568A
Cited
US4810241A
Cited
US4439188A
Cited
US4578061A
Cited
US4430081A
Cited
US4534759A
Cited
WO1983000367A1
Cited
DE3242870A1
Cited
US4464178A
Cited
US4425119A
Cited
US4405320A
Cited
US4447237A
Cited
US4491126A
Cited
US4490137A
Cited
EP0119596A1
Cited
EP0132940A1
Cited
US4581020A
Cited
EP0134745A1
Cited
US4781693A
Cited
US4569675A
Cited
US4543088A
Cited
US4623329A
Cited
US4547194A
Cited
US4634422A
Cited
US4682981A
Cited
US4578063A
Cited
US4650473A
Cited
US4710167A
Cited
US4645495A
Cited
US4929235A
Cited
US4692146A
Cited
US4710174A
Cited
US4673394A
Cited
US4790826A
Cited
US4695273A
Cited
US4712583A
Cited
GB2192338A
Cited
US4832054A
Cited
US4781695A
Cited
US4704103A
Cited
US4781680A
Cited
US4886501A
Cited
US5092849A
Cited
US4842591A
Cited
US4915690A
Cited
US4857062A
Cited
US4978338A
Cited
US4857053A
Cited
US5026344A
Cited
US5045060A
Cited
US5041098A
Cited
US5171228A
Cited
US5226879A
Cited
US5057084A
Cited
US5180365A
Cited
US5053013A
Cited
US5263930A
Cited
US5281199A
Cited
US5350360A
Cited
US5352204A
Cited
US5356381A
Cited
US5417656A
Cited
US5395324A
Cited
US5318545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |