US5507295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical devices
Assignee: BTG International Ltd
•
Filing: 1993-06-29
•
Granted: 1996-04-16
•
Expires: 2013-06-29
Abstract
Abstract The present invention relates to a device to allow access of a medical sensor probe to a selected location within a patient's body. A disposable elongated tubular sheath (2) is releasably attached at its closed distal end (10) to the wall of a blood vessel (1) during surgery. The sheath leads out of the patient's body and provides an access path through which a sensor probe, such as an ultrasound probe (3), can be introduced in order to allow monitoring of blood flow within the vessel. The probe can be easily removed and replaced without contamination. When monitoring is complete, the releasable attachment means are operated and the sheath can be pulled out of the patient's body without further surgery.
Inventors
- 👤 Robert Skidmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:21
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/06; A61B1/00; A61B1/00142; A61B8/12; A61B90/00; A61B90/08; A61B2090/0814; A61B8/44; A61B8/4444; A61B8/445
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
A device for allowing access of a medical sensor probe to a selected perivascular location within a patient's body, comprising: an elongated tubular sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body, said first portion being shaped to fit against a blood vessel wall; a tubular passageway extending through said sheath, said passageway being closed to the exterior in the first portion and having an opening in the second portion to allow access and removal of a medical sensor probe therethrough whilst said sheath remains indwelling within the patient's body, said closed passageway in said first portion preventing any contact between the patient's interior and said probe; and attachment means located on said first portion for securing said sheath at said selected perivascular location.
Claim 2
Independent Claim
137 words
A device for allowing access of a medical sensor probe to a selected perivascular location within a patient's body, comprising: an elongated tubular sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body, said first portion being shaped to fit against a blood vessel wall; a tubular passageway extending through said sheath, said passageway being closed to the exterior in the first portion and having an opening in the second portion to allow access and removal of a medical sensor probe therethrough whilst said sheath remains indwelling within the patient's body, said closed passageway in said first portion preventing any contact between the patient's interior and said probe; and attachment means located on said first portion for securing said sheath at said selected perivascular location.
Claim 3
Dependent Claim
32 words
A device according to claim 1, wherein said first portion of said sheath has a distal end portion provided with a partially concave external surface to fit against the blood vessel wall.
Claim 4
Dependent Claim
19 words
A device according to claim 1, wherein said attachment means is releasable by operation from outside the patient's body.
Claim 5
Dependent Claim
42 words
A device according to claim 3, wherein said releasable attachment means comprises fixing means securable to the selected location, and a tractable element co-operable with said fixing means, said tractable element being guidable in use by guide means associated with said sheath.
Claim 6
Dependent Claim
34 words
A device according to claim 4, wherein said fixing means comprises one or more sutures, said guide means is a bore within a wall of said sheath and said tractable element is a wire.
Claim 7
Dependent Claim
21 words
A device according to claim 3 comprising tamper-indicating means for indicating whether or not said releasable attachment means has been operated.
Claim 8
Independent Claim
144 words
A device for allowing access of a medical sensor probe to a selected location within a patient's body, comprising: an elongated tubular sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body; a tubular passageway extending through said sheath, said passageway being closed to the exterior in said first portion and having an opening in said second portion to allow access and removal of a medical sensor probe therethrough whilst said sheath remains indwelling within the patient's body, said closed passageway in said first pro%ion preventing any contact between the patient's interior and said probe, said first portion having an internal form for accommodating a probe of predetermined shape in a prescribed orientation in said sheath; and attachment means located on said first portion for securing said sheath at said selected location.
Claim 9
Independent Claim
144 words
A device for allowing access of a medical sensor probe to a selected location within a patient's body, comprising: an elongated tubular sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body; a tubular passageway extending through said sheath, said passageway being closed to the exterior in said first portion and having an opening in said second portion to allow access and removal of a medical sensor probe therethrough whilst said sheath remains indwelling within the patient's body, said closed passageway in said first pro%ion preventing any contact between the patient's interior and said probe, said first portion having an internal form for accommodating a probe of predetermined shape in a prescribed orientation in said sheath; and attachment means located on said first portion for securing said sheath at said selected location.
Claim 10
Dependent Claim
12 words
A device according to claim 7, wherein said tubular passageway is non-circular.
Claim 11
Dependent Claim
138 words
A medical sensor probe kit, comprising: a Doppler ultrasound probe; and at least one elongated tubular sheath for allowing access of said probe to a selected perivascular location within a patient's body, said sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body, said sheath having a tubular passageway extending therethrough, closed to the exterior in the first portion and having an opening in said second portion to allow access and removal of said probe therethrough whilst said sheath remains indwelling within the patient's body, said first portion of said sheath preventing any contact between the patient's interior and said probe, said first portion being shaped to fit against a blood vessel wall and having attachment means for securing said sheath at said selected perivascular location.
Claim 12
Dependent Claim
138 words
A medical sensor probe kit, comprising: a Doppler ultrasound probe; and at least one elongated tubular sheath for allowing access of said probe to a selected perivascular location within a patient's body, said sheath having a first portion and a second portion, the two portions to be positioned respectively inside and outside the patient's body, said sheath having a tubular passageway extending therethrough, closed to the exterior in the first portion and having an opening in said second portion to allow access and removal of said probe therethrough whilst said sheath remains indwelling within the patient's body, said first portion of said sheath preventing any contact between the patient's interior and said probe, said first portion being shaped to fit against a blood vessel wall and having attachment means for securing said sheath at said selected perivascular location.
Claim 13
Independent Claim
172 words
A method for locating a medical sensor probe to position said probe at a selected perivascular location within a patient's body, said method comprising: positioning an elongated tubular sheath against a blood vessel wall, said sheath having a first portion and a second portion, said first portion being positioned inside the patient's body and said second portion being positioned outside the patient's body, said sheath having a tubular passageway extending therethrough, said passageway being closed to the exterior in the first portion and having an opening in the second portion for allowing access and removal of a medical sensor probe therethrough whilst the sheath remains indwelling within the patient's body, the first portion preventing any contact between the patient's interior and the probe, the sheath having attachment means located on said the first portion for securing the sheath at the selected perivascular location; attaching the tubular sheath to the vessel via the attachment means; and inserting a medical probe into the tubular sheath to position the probe at the selected perivascular location.
Claim 14
Independent Claim
172 words
A method for locating a medical sensor probe to position said probe at a selected perivascular location within a patient's body, said method comprising: positioning an elongated tubular sheath against a blood vessel wall, said sheath having a first portion and a second portion, said first portion being positioned inside the patient's body and said second portion being positioned outside the patient's body, said sheath having a tubular passageway extending therethrough, said passageway being closed to the exterior in the first portion and having an opening in the second portion for allowing access and removal of a medical sensor probe therethrough whilst the sheath remains indwelling within the patient's body, the first portion preventing any contact between the patient's interior and the probe, the sheath having attachment means located on said the first portion for securing the sheath at the selected perivascular location; attaching the tubular sheath to the vessel via the attachment means; and inserting a medical probe into the tubular sheath to position the probe at the selected perivascular location.
References Cited (Backward Citations)
US4593699A
Cited
EP0217689A1
Cited
EP0246176A2
Cited
US4815470A
Cited
WO1990002519A1
Cited
US5205292A
Cited
US5289821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |