Patent US2508171A successfully refreshed from Google Patents.
US5718237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle
Assignee: Individual
•
Filing: 1995-03-30
•
Granted: 1998-02-17
•
Expires: 2015-03-30
Abstract
Abstract A biopsy needle has coaxial, telescopically interengaged stylet, inner and outer cannulas which are axially and rotatably displaceable relative to one another. The stylet has a distal portion provided with a cutting recess for severing a biopsy specimen from a site in a patient, and the inner cannula has a distal portion for cutting and capturing the specimen in the recess for removal from the site upon withdrawal of the needle from the patient. The distal portion of the inner cannula is partially cut away to provide an insert recess which supports a semi-circular insert of hemostatic collagen which remains at the site upon removal of the needle to minimize hemorrhagic complications by promoting blood clotting. The insert and the distal portion of the inner cannula have radially outer surfaces of corresponding radius whereby the distal portion of the inner cannula and the insert supported thereon are received within the distal end of the outer cannula prior to use of the needle.
Inventors
- 👤 John R. Haaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B17/00; A61B17/0057; A61B2017/00637; A61B2017/00646; A61B2017/00654; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A hemostatic sheath in combination with a medical device for accessing a body site within a human patient, said sheath initially disposed in an unapplied position within said device and slidable, relative to said device, to protrude from said device in an applied position and engage the margins of said site, said sheath comprising a hollow, cylindrical plug having a longitudinally extending axis and a longitudinally extending opening along said axis, said plug being arcuate transverse said axis and having circumferentially spaced apart axially extending side edges and means for occluding and preventing the flow of blood from said site when exposed to fluid from said site thereby minimizing complications from bleeding.
Claim 2
Dependent Claim
112 words
A hemostatic sheath in combination with a medical device for accessing a body site within a human patient, said sheath initially disposed in an unapplied position within said device and slidable, relative to said device, to protrude from said device in an applied position and engage the margins of said site, said sheath comprising a hollow, cylindrical plug having a longitudinally extending axis and a longitudinally extending opening along said axis, said plug being arcuate transverse said axis and having circumferentially spaced apart axially extending side edges and means for occluding and preventing the flow of blood from said site when exposed to fluid from said site thereby minimizing complications from bleeding.
Claim 3
Dependent Claim
106 words
A hemostatic sheath in combination with a medical device for accessing a body site within a human patient, said sheath initially disposed in an unapplied position within said device and slidable, relative to said device, to protrude from said device in an applied position and engage the margins of said site, said sheath comprising a hollow, cylindrical plug having a longitudinally extending opening along its length whereby fluid from said site causes said sheath to occlude said site thereby minimizing complications from bleeding, said sheath including a longitudinally extending axis, said sheath being shaped in the form of a hollow shaped half-moon transverse to said axis.
Claim 4
Dependent Claim
106 words
A hemostatic sheath in combination with a medical device for accessing a body site within a human patient, said sheath initially disposed in an unapplied position within said device and slidable, relative to said device, to protrude from said device in an applied position and engage the margins of said site, said sheath comprising a hollow, cylindrical plug having a longitudinally extending opening along its length whereby fluid from said site causes said sheath to occlude said site thereby minimizing complications from bleeding, said sheath including a longitudinally extending axis, said sheath being shaped in the form of a hollow shaped half-moon transverse to said axis.
Claim 5
Dependent Claim
14 words
The hemostatic sheath of claim 1, wherein said hemostatic sheath is comprised of collagen.
Claim 6
Dependent Claim
12 words
The hemostatic sheath of claim 1, wherein said hemostatic sheath includes thrombin.
Claim 7
Dependent Claim
103 words
A hemostatic sheath for use with an axially extending medical device for accessing a site of a body within a human patient, said medical device including means for inserting said sheath at said site and means for causing relative sliding movement between said sheath and said device, said sheath comprising a semi-cylindrical shaped plug having a circumferentially extending exterior cylindrical wall and a circumferentially extending interior cylindrical wall, said walls connected by circumferentially spaced apart side edges and a swellable material for causing said sheath to swell to prevent the flow of blood from said site when exposed to fluid from said site.
Claim 8
Dependent Claim
103 words
A hemostatic sheath for use with an axially extending medical device for accessing a site of a body within a human patient, said medical device including means for inserting said sheath at said site and means for causing relative sliding movement between said sheath and said device, said sheath comprising a semi-cylindrical shaped plug having a circumferentially extending exterior cylindrical wall and a circumferentially extending interior cylindrical wall, said walls connected by circumferentially spaced apart side edges and a swellable material for causing said sheath to swell to prevent the flow of blood from said site when exposed to fluid from said site.
Claim 9
Dependent Claim
26 words
The hemostatic sheath of claim 5, wherein said means for inserting said sheath includes an elongated member, said interior cylindrical wall disposed on said elongated member.
References Cited (Backward Citations)
US2198319A
Cited
US3106483A
Cited
US3358684A
Cited
US3888258A
Cited
US4390519A
Cited
US4412947A
Cited
US4626286A
Cited
US4749689A
Cited
US4708147A
Cited
US5061281A
Cited
US4902290A
Cited
US4785826A
Cited
US4827940A
Cited
US4936835A
Cited
US4838280A
Cited
US5080655A
Cited
US5195988A
Cited
US5100429A
Cited
US5201764A
Cited
US5242428A
Cited
US5281212A
Cited
US5326350A
Cited
US5308338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-16 | 2001-08-18 | 2002-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-16 | 2005-08-18 | 2006-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-16 | 2009-08-18 | 2010-02-17 | $7700.00 | Window Closed / Lapsed |