US5122147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyp marking device and method
Assignee: Individual
•
Filing: 1991-04-05
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Granted: 1992-06-16
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Expires: 2011-04-05
Abstract
Abstract Surgical method and instrument such as a snare or forceps clamps, which can be moved to a position to firmly grasp a polyp. A tissue marking agent is disposed on the surface of the instrument that contacts a polyp, and the marking agent is crushed against the polyp. The marking agent is absorbed by the polyp and stains the tissue from which the polyp projects, the assist in visualizing the polyp site if conventional surgery is later required. The method and device may optionally provide for cutting and removing of the polyp and for application of a hemostatic agent to the polyp base to minimize bleeding.
Inventors
- 👤 Frank K. Sewell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/32056; A61B90/00; A61B90/39; A61B2090/3937; A61B2090/395
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
80 words
A surgical polyp marking snare comprising: a housing, a first wire loop extending from the housing, a crushable tissue marking agent disposed on the wire loop, the wire loop being movable between an extended position in which the loop may be placed over a polyp, and a retracted position in which the size of the loop is reduced to thereby crush the marking agent against the polyp, and means to move the wire loop between the extended and retracted positions.
Claim 2
Dependent Claim
80 words
A surgical polyp marking snare comprising: a housing, a first wire loop extending from the housing, a crushable tissue marking agent disposed on the wire loop, the wire loop being movable between an extended position in which the loop may be placed over a polyp, and a retracted position in which the size of the loop is reduced to thereby crush the marking agent against the polyp, and means to move the wire loop between the extended and retracted positions.
Claim 3
Dependent Claim
16 words
The surgical polyp marking snare of claim 1 wherein the tissue marking agent comprises carbon granules.
Claim 4
Dependent Claim
27 words
The surgical polyp marking snare of claim 1 wherein the tissue marking agent comprises a solid crushable capsule shell with a liquid marking dye within the shell.
Claim 5
Dependent Claim
72 words
The surgical polyp marking snare of claim 1 wherein a first portion of the loop is fixed with respect to the housing and a second portion of the loop is movable with respect to the housing, the tissue marking agent being disposed on the wire loop between the fixed and movable portions, and wherein the loop is movable between the extended and retracted positions by moving the movable portion toward the housing.
Claim 6
Dependent Claim
56 words
The surgical polyp marking snare of claim 1 further comprising first and second sides of the wire loop, the tissue marking agent being disposed on the wire loop between the first and second sides, the loop being movable from the extended to the retracted position by simultaneously pulling the first and second sides toward the housing.
Claim 7
Dependent Claim
23 words
The surgical polyp marking snare of claim 1 wherein the tissue marking agent is disposed in a recess in the first wire loop.
Claim 8
Dependent Claim
14 words
The surgical polyp marking snare of claim 1 wherein the wire loop is metal.
Claim 9
Dependent Claim
37 words
The surgical polyp marking snare of claim 1 further comprising a topical hemostatic agent disposed on the wire loop, such that the hemostatic agent may contact a polyp when the wire loop is moved against the polyp.
Claim 10
Dependent Claim
38 words
The surgical polyp marking snare of claim 8 wherein the topical hemostatic agent is selected from the group consisting of denatured animal gelatin, topical thrombin, epinephrine, oxidized regenerated cellulose, microfibrillar collagen or modified collagen hemin comprising calcium fluoride.
Claim 11
Dependent Claim
62 words
The surgical polyp marking snare of claim 1 further comprising a structure having an aperture, the first loop passing through the aperture, a plurality of wedges extending from the first loop, such that when the first loop is moved towards its retracted position, the wedges ratchetedly pass through the aperture to thereby restrict movement of the first loop toward the extended position.
Claim 12
Dependent Claim
60 words
The surgical polyp marking snare of claim 1 further comprising: a second cutting wire loop adjacent to the first wire loop such that both loops may be simultaneously placed over a polyp, the second wire loop being movable between extended and retracted positions, such that when the second loop is moved toward its retracted position it may sever the polyp.
Claim 13
Dependent Claim
38 words
The surgical polyp marking snare of claim 11, wherein the second cutting wire loop traverses the first wire loop, such that the second cutting wire loop may sever the first wire loop when moved towards its retracted position.
Claim 14
Dependent Claim
58 words
The surgical polyp marking snare of claim 11, further comprising a third wire loop adjacent to the second wire loop and on the side of the second wire loop opposite the first wire loop, the third wire loop being movable between extended and retracted positions, the third wire loop comprising at least one inwardly projecting polyp holding means.
Claim 15
Dependent Claim
38 words
The surgical polyp marking snare of claim 13 further comprising at least one spacing member having three apertures, the first, second and third loops passing through one respective aperture to thereby space the loops apart from each other.
Claim 16
Dependent Claim
36 words
The surgical polyp marking snare of claim 13 wherein the first loop is comprised of metal, and the second and third loops are comprised of a material selected from the group of polymeric silicone or plastic.
Claim 17
Dependent Claim
68 words
A surgical polyp marking forceps comprising: a pair of opposing jaws adapted to close an anatomical structure therebetween, the jaws being insertable into a human colon, means to close the jaws, a crushable tissue marking agent disposed on at least one of the jaws and a marking agent crushing means on the opposite jaw, such that the crushing means crushes the marking agent when the jaws are closed.
Claim 18
Dependent Claim
68 words
A surgical polyp marking forceps comprising: a pair of opposing jaws adapted to close an anatomical structure therebetween, the jaws being insertable into a human colon, means to close the jaws, a crushable tissue marking agent disposed on at least one of the jaws and a marking agent crushing means on the opposite jaw, such that the crushing means crushes the marking agent when the jaws are closed.
Claim 19
Dependent Claim
32 words
The surgical polyp marking forceps of claim 16 further comprising upper and lower opposing blades adjacent to the jaws, such that tissue between the blades is cut when the jaws are closed.
Claim 20
Dependent Claim
43 words
The surgical polyp marking forceps of claim 16 further comprising first and second ends of the jaws, and a blade adjacent the jaws movable between from the first jaw end toward the second jaw end to thereby cut tissue located between the ends.
Claim 21
Dependent Claim
16 words
The surgical polyp marking forceps of claim 16 wherein the tissue marking agent comprises carbon granules.
Claim 22
Dependent Claim
27 words
The surgical polyp marking forceps of claim 16 wherein the tissue marking agent comprises a solid crushable capsule shell with a liquid marking dye within the shell.
Claim 23
Dependent Claim
36 words
The surgical polyp marking forceps of claim 16 further comprising a topical hemostatic agent disposed on at least one of the jaws, such that the hemostatic agent may contact a polyp when the jaws are closed.
Claim 24
Dependent Claim
38 words
The surgical polyp marking snare of claim 21 wherein the topical hemostatic agent is selected from the group consisting of denatured animal gelatin, topical thrombin, epinephrine, oxidized regenerated cellulose, microfibrillar collagen or modified collagen hemin comprising calcium fluoride.
Claim 25
Independent Claim
59 words
A method for marking a polyp, comprising the steps of: providing a device for crushing a crushable tissue marking agent against the polyp, crushing the tissue marking agent against the polyp, and holding the crushed tissue marking agent against the polyp until the marking agent is lymphatically absorbed by the polyp and carried to the base of the polyp.
Claim 26
Independent Claim
59 words
A method for marking a polyp, comprising the steps of: providing a device for crushing a crushable tissue marking agent against the polyp, crushing the tissue marking agent against the polyp, and holding the crushed tissue marking agent against the polyp until the marking agent is lymphatically absorbed by the polyp and carried to the base of the polyp.
Claim 27
Dependent Claim
12 words
The method of claim 23 wherein the crushing device comprises a snare.
Claim 28
Dependent Claim
13 words
The method of claim 23 wherein the crushing device comprises a forceps clamp.
Claim 29
Dependent Claim
13 words
The method of claim 23 wherein the tissue marking agent comprises carbon granules.
Claim 30
Dependent Claim
24 words
The method of claim 23 wherein the tissue marking agent comprises a solid crushable capsule shell with a liquid marking dye within the shell.
Claim 31
Dependent Claim
20 words
The method of claim 23 further comprising the step of severing the polyp from the tissue from which it projects.
Claim 32
Dependent Claim
18 words
The method of claim 23 further comprising the step of applying a topical hemostatic agent to the polyp.
Claim 33
Dependent Claim
35 words
The method of claim 29 wherein the topical hemostatic agent is selected from the group consisting of denatured animal gelatin, topical thrombin, epinephrine, oxidized regenerated cellulose, microfibrillar collagen or modified collagen hemin comprising calcium fluoride.
References Cited (Backward Citations)
US2679249A
Cited
US3566873A
Cited
US3633584A
Cited
US3739784A
Cited
US3835859A
Cited
US4488550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |