US3590808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy tool
Assignee: United States Catheter and Instrument Corp
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Filing: 1968-09-04
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Granted: 1971-07-06
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Expires: 1988-09-04
Abstract
Abstract A biopsy tool that includes a rigid tip affixed to the distal end of a flexible intestinal intubation tube and is provided with a body portion having a longitudinal duct for the passage of an exchange guide and a radial cavity connected through the lumen of the tube to a vacuum source to draw a tissue sample thereinto. A pneumatically operable knife is longitudinally reciprocable across the open end of the cavity to sever the tissue sample contained therein.
Inventors
- 👤 Wolf F Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/04; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B2017/00535; A61B17/30; A61B2017/306
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A biopsy tool comprising a generally cylindrical body having a smoothly rounded distal end, a proximal end and a longitudinal axis, a plane surface extending proximally from the distal end of said body, a sample-receiving cavity extending into said body from said plane surface, a flat-bladed knife reciprocable across said cavity along said surface, knife actuating means adjacent to said surface, a first bore extending axially from end-to-end of the body and open at both ends, and a second bore extending axially from the proximal end of the body to a point adjacent said cavity and being in communication with said cavity.
Claim 2
Dependent Claim
102 words
A biopsy tool comprising a generally cylindrical body having a smoothly rounded distal end, a proximal end and a longitudinal axis, a plane surface extending proximally from the distal end of said body, a sample-receiving cavity extending into said body from said plane surface, a flat-bladed knife reciprocable across said cavity along said surface, knife actuating means adjacent to said surface, a first bore extending axially from end-to-end of the body and open at both ends, and a second bore extending axially from the proximal end of the body to a point adjacent said cavity and being in communication with said cavity.
Claim 3
Dependent Claim
22 words
A biopsy tool according to claim 1 in which said surface lies parallel to said axis and said knife is reciprocable axially.
Claim 4
Dependent Claim
41 words
A biopsy tool according to claim 1 in which the knife actuating means includes a piston fixed to the knife, a cylinder adapted to receive said piston and a fitting for connection of the cylinder to a source of actuating fluid.
Claim 5
Dependent Claim
52 words
A biopsy tool according to claim 3 in which the cylindrical body is longitudinally recessed adjacent its proximal end, the cylinder is formed in the distal end of a separate cylinder block, said block is fitted in said longitudinal recess, and which includes releasable means for holding said block in said recess.
Claim 6
Dependent Claim
16 words
A biopsy tool according to claim 4 in which said releasable means is a rotatable collar.
Claim 7
Dependent Claim
37 words
A biopsy tool according to claim 2 in which the knife has parallel sides and a double bevel spear point cutting edge, the distance between said sides being greater than the corresponding dimension of the sample-receiving cavity.
Claim 8
Dependent Claim
46 words
A biopsy tool according to claim 6 in which the plane surface is bounded by a U-shaped rim around the distal and lateral edges of said surface, the lateral portions of said rim being parallel and spaced to guide freely the parallel sides of the knife.
Claim 9
Dependent Claim
37 words
A biopsy tool according to claim 4 in which the cylinder block is provided with a distally extending portion slotted in a plane parallel to the axis of the cylinder, the knife being slidable in said slot.
Claim 10
Dependent Claim
27 words
A biopsy tool according to claim 1 which includes a fitting at the proximal end of said second bore for connection thereof to a source of vacuum.
References Cited (Backward Citations)
US2212133A
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US2708437A
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US2684069A
Cited
US3033194A
Cited
US3253524A
Cited
US3289669A
Cited
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Cited
US3401684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |