US4785825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety biopsy forceps
Assignee: Humboldt-Universität zu Berlin
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Filing: 1988-02-04
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Granted: 1988-11-22
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Expires: 2008-02-04
Abstract
Abstract Safety biopsy forceps, in particular for infants, comprise operating forceps, a flexible shaft, a pulling element, as well as a head with cutting- and/or grasping elements, of which at least one element is moveable by means of the pulling element, provided with a head with cutting- and/or grasping element which is detachably fastened on the flexible shaft. The flexible shaft is detachably fastened to the operating forceps and the pulling element to the operating forceps. The pulling element is adjustable for the setting of the cutting- and/or grasping elements and the setting of the force of the cutting process and can also be locked in after the adjustment. The cutting- and/or grasping elements are provided at the joint with a recess which prevents tissue from becoming lodge during closing of the elements.
Inventors
- 👤 Paul Romaniuk
- 👤 Jurgen Speder
- 👤 Hans-Peter Dubel
- 👤 Siegfried Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/06; A61B17/00; A61B17/28; A61B17/29; A61B2017/0046; A61B2017/00473; A61B2017/2901; A61B2017/2905; A61B2017/2926; A61B2017/2932; A61B2017/2939; A61B2017/294
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
Safety biopsy forceps comprising a head, first and second opposed grasping and/or cutting elements connected to said head, said first opposed element being pivotally mounted to said head at a pivot point adjacent said second opposed element for pivotal movement toward and away from said second opposed element, a hollow flexible shaft, means for detachably fastening together the head and the flexible shaft, an elongated pulling element axially displaceably and coaxially received in the hollow shaft and connected to said first opposed element for acting upon said first opposed element to effect said pivotal movement, said first and second opposed elements each having a free end of spoonlike configuration with mutually facing concavities and each having a recess communicating with said concavity and extending to said pivot point, whereby during actuation of said forceps to effect said pivoted movement to cause tissue to be grasped by and a specimen thereof to be cut out by said opposed elements, said recesses prevent said tissue from jamming between said opposed elements.
Claim 2
Dependent Claim
169 words
Safety biopsy forceps comprising a head, first and second opposed grasping and/or cutting elements connected to said head, said first opposed element being pivotally mounted to said head at a pivot point adjacent said second opposed element for pivotal movement toward and away from said second opposed element, a hollow flexible shaft, means for detachably fastening together the head and the flexible shaft, an elongated pulling element axially displaceably and coaxially received in the hollow shaft and connected to said first opposed element for acting upon said first opposed element to effect said pivotal movement, said first and second opposed elements each having a free end of spoonlike configuration with mutually facing concavities and each having a recess communicating with said concavity and extending to said pivot point, whereby during actuation of said forceps to effect said pivoted movement to cause tissue to be grasped by and a specimen thereof to be cut out by said opposed elements, said recesses prevent said tissue from jamming between said opposed elements.
Claim 3
Dependent Claim
44 words
Safety biopsy forceps according to claim 1, wherein the means for detachably fastening together the head and the flexible shaft comprises an internally threaded hollow sleeve fixed to the flexible shaft and complementary external threads formed on the head antipodal to said opposed elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |