US5591187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laparoscopic tissue retrieval device and method
Assignee: Individual
•
Filing: 1995-07-14
•
Granted: 1997-01-07
•
Expires: 2015-07-14
Abstract
Abstract A material retrieval instrument, particularly for retrieving biological tissue. In one embodiment, the instrument comprises a cylindrical sheath having a distal end and a proximal end; an auger disposed in the sheath for rotation therein, the auger having a cutting blade disposed thereon, the cutting blade extending from the distal end of the sheath for engagement with tissue to be retrieved, the auger including a central longitudinal opening, the opening receiving an engaging member adapted to extend from the auger for engaging tissue to move the tissue into engagement with the cutting blade on the auger; the auger being rotatable in the sheath and comprising a conveyor for moving cut tissue longitudinally along the auger in the sheath to a tissue receiving reservoir; and a device for rotating the auger. In another embodiment, the instrument has an opening in a cylindrical surface of the sheath into which tissue to be excised can be fed for engagement with the cutting blade of the auger and subsequent removal.
Inventors
- 👤 Moshe Dekel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B17/32002; A61B17/3205; A61B17/3207; A61B17/320783; A61B2017/00681; A61B2017/00685
Claims Analysis
Total Claims: 68
Claim 1
Independent Claim
126 words
A material retrieval instrument comprising: a cylindrical sheath having a distal open end and a proximal end; an auger disposed in the sheath for rotation therein, the auger having a cutting blade disposed thereon, the cutting blade extending from the distal open end of the sheath for engagement with material to be retrieved, the auger including a central longitudinal opening, the opening receiving an engaging member adapted to extend from the auger for engaging material to move the material into engagement with the cutting blade on the auger; the auger being rotatable in the sheath and comprising a conveyor for moving cut material longitudinally along the auger in the sheath to a material receiving reservoir; and a device coupled to the auger for rotating the auger.
Claim 2
Dependent Claim
126 words
A material retrieval instrument comprising: a cylindrical sheath having a distal open end and a proximal end; an auger disposed in the sheath for rotation therein, the auger having a cutting blade disposed thereon, the cutting blade extending from the distal open end of the sheath for engagement with material to be retrieved, the auger including a central longitudinal opening, the opening receiving an engaging member adapted to extend from the auger for engaging material to move the material into engagement with the cutting blade on the auger; the auger being rotatable in the sheath and comprising a conveyor for moving cut material longitudinally along the auger in the sheath to a material receiving reservoir; and a device coupled to the auger for rotating the auger.
Claim 3
Dependent Claim
33 words
The material retrieval instrument of claim 1, wherein the engaging member comprises a corkscrew-like device extending from a shaft adapted for rotatable and slidable movement in the central longitudinal opening in the auger.
Claim 4
Dependent Claim
15 words
The material retrieval instrument of claim 2, further comprising a T-handle attached to the shaft.
Claim 5
Dependent Claim
21 words
The material retrieval instrument of claim 2, further comprising a pneumatic seal in sealing rotatable and slidable engagement with the shaft.
Claim 6
Dependent Claim
36 words
The material retrieval instrument of claim 2, further comprising a compression spring disposed about the shaft between the sheath and the proximal end of the shaft for providing a bias on the shaft toward the operator.
Claim 7
Dependent Claim
16 words
The material retrieval instrument of claim 1, wherein the device for rotating comprises a hand crank.
Claim 8
Dependent Claim
16 words
The material retrieval instrument of claim 1, wherein the device for rotating comprises an electric motor.
Claim 9
Dependent Claim
18 words
The material retrieval instrument of claim 1, wherein the device for rotating comprises a pneumatic or hydraulic drive.
Claim 10
Dependent Claim
33 words
The material retrieval instrument of claim 1, further comprising an opening in a cylindrical surface of the sheath through which material can be inserted for engagement with the cutting blade of the auger.
Claim 11
Dependent Claim
24 words
The material retrieval instrument of claim 9, wherein the cutting blade is serrated, at least in an area adjacent the opening in the sheath.
Claim 12
Dependent Claim
31 words
The material retrieval instrument of claim 1, further comprising a serrated edge at the distal end of the sheath for engaging material to be removed to prevent rotation of the material.
Claim 13
Dependent Claim
20 words
The material retrieval instrument of claim 1, further comprising a handle coupled to the sheath for grasping by a user.
Claim 14
Dependent Claim
24 words
The material retrieval instrument of claim 1, wherein the sheath is sized so as to fit within a trocar inserted in a body incision.
Claim 15
Dependent Claim
22 words
The material retrieval instrument of claim 13, wherein the sheath has an outer diameter of either approximately 12 mm or 20 mm.
Claim 16
Dependent Claim
19 words
The material retrieval instrument of claim 1, wherein the central opening in the auger is approximately 4 mm wide.
Claim 17
Dependent Claim
29 words
The material retrieval instrument of claim 1, wherein the sheath comprises a substantially transparent substance to enable visual observation of conveyance of material by the auger in the sheath.
Claim 18
Dependent Claim
13 words
The material retrieval instrument claim 16, wherein the sheath comprises a clear plastic.
Claim 19
Dependent Claim
12 words
The material retrieval instrument of claim 1, wherein the instrument is disposable.
Claim 20
Dependent Claim
12 words
The material retrieval instrument of claim 1, wherein the instrument is reusable.
Claim 21
Dependent Claim
21 words
The material retrieval instrument of claim 1, further comprising a dam adjacent the reservoir for directing cut material into the reservoir.
Claim 22
Dependent Claim
13 words
The material retrieval instrument of claim 1, wherein the material is biological tissue.
Claim 23
Dependent Claim
15 words
The material retrieval instrument of claim 1, wherein the auger has a helical cutting blade.
Claim 24
Dependent Claim
96 words
A material retrieval instrument comprising: a cylindrical sheath having a distal end and a proximal end; an auger disposed in the sheath for rotation therein, the auger having a cutting blade disposed thereon; the sheath having an opening in a cylindrical surface thereof into which material can be inserted for engagement with the cutting blade of the auger; the auger being rotatable in the sheath and comprising a conveyor for moving cut material longitudinally along the auger in the sheath to a material receiving reservoir; and a device coupled to the auger for rotating the auger.
Claim 25
Dependent Claim
96 words
A material retrieval instrument comprising: a cylindrical sheath having a distal end and a proximal end; an auger disposed in the sheath for rotation therein, the auger having a cutting blade disposed thereon; the sheath having an opening in a cylindrical surface thereof into which material can be inserted for engagement with the cutting blade of the auger; the auger being rotatable in the sheath and comprising a conveyor for moving cut material longitudinally along the auger in the sheath to a material receiving reservoir; and a device coupled to the auger for rotating the auger.
Claim 26
Dependent Claim
37 words
The material retrieval instrument of claim 23, further wherein the distal end of the sheath is open and the cutting blade extends from the distal open end of the sheath for engagement with material to be retrieved.
Claim 27
Dependent Claim
44 words
The material retrieval instrument of claim 24, further wherein the auger includes a central longitudinal opening, the opening receiving an engaging member adapted to extend from the auger for engaging material to move the material into engagement with the cutting blade of the auger.
Claim 28
Dependent Claim
34 words
The material retrieval instrument of claim 25, further wherein the engaging member comprises a corkscrew-like device extending from a shaft adapted for rotatable and slidable movement in the central longitudinal opening in the auger.
Claim 29
Dependent Claim
15 words
The material retrieval instrument of claim 26, further comprising a T-handle attached to the shaft.
Claim 30
Dependent Claim
21 words
The material retrieval instrument of claim 26, further comprising a pneumatic seal in sealing rotatable and slidable engagement with the shaft.
Claim 31
Dependent Claim
36 words
The material retrieval instrument of claim 26, further comprising a compression spring disposed about the shaft between the sheath and the proximal end of the shaft for providing a bias on the shaft toward the operator.
Claim 32
Dependent Claim
19 words
The material retrieval instrument of claim 25, wherein the central opening in the auger is approximately 4 mm wide.
Claim 33
Dependent Claim
28 words
The material retrieval instrument of claim 24, further comprising a serrated edge at the distal end of the sheath for engaging material to prevent rotation of the material.
Claim 34
Dependent Claim
16 words
The material retrieval instrument of claim 23, wherein the device for rotating comprises a hand crank.
Claim 35
Dependent Claim
16 words
The material retrieval instrument of claim 23, wherein the device for rotating comprises an electric motor.
Claim 36
Dependent Claim
18 words
The material retrieval instrument of claim 23, wherein the device for rotating comprises a pneumatic or hydraulic drive.
Claim 37
Dependent Claim
24 words
The material retrieval instrument of claim 23, wherein the cutting blade is serrated, at least in an area adjacent the opening in the sheath.
Claim 38
Dependent Claim
20 words
The material retrieval instrument of claim 23, further comprising a handle coupled to the sheath for grasping by a user.
Claim 39
Dependent Claim
24 words
The material retrieval instrument of claim 23, wherein the sheath is sized so as to fit within a trocar inserted in a body incision.
Claim 40
Dependent Claim
22 words
The material retrieval instrument of claim 36, wherein the sheath has an outer diameter of either approximately 12 mm or 20 mm.
Claim 41
Dependent Claim
29 words
The material retrieval instrument of claim 23, wherein the sheath comprises a substantially transparent substance to enable visual observation of conveyance of material by the auger in the sheath.
Claim 42
Dependent Claim
14 words
The material retrieval instrument of claim 39, wherein the sheath comprises a clear plastic.
Claim 43
Dependent Claim
12 words
The material retrieval instrument of claim 23, wherein the instrument is disposable.
Claim 44
Dependent Claim
12 words
The material retrieval instrument of claim 23, wherein the instrument is reusable.
Claim 45
Dependent Claim
21 words
The material retrieval instrument of claim 23, further comprising a dam adjacent the reservoir for directing cut material into the reservoir.
Claim 46
Dependent Claim
13 words
The material retrieval instrument of claim 23, wherein the material is biological tissue.
Claim 47
Dependent Claim
15 words
The material retrieval instrument of claim 23, wherein the auger has a helical cutting blade.
Claim 48
Independent Claim
125 words
A method for removal of material comprising: rotating an auger having a cutting blade in a hollow cylindrical sheath, with the auger extending from a distal end of the sheath; moving material to be removed into engagement with the rotating auger at the distal end so as to cut the material; and conveying material cut by the auger along a longitudinal extent of the auger between the rotating auger and the sheath to a reservoir; the step of moving material to be removed into engagement with the rotating auger comprising inserting an engaging device through a central opening in the auger so as to extend into engagement with the material to be removed, engaging the material and pulling it into contact with the rotating auger.
Claim 49
Independent Claim
125 words
A method for removal of material comprising: rotating an auger having a cutting blade in a hollow cylindrical sheath, with the auger extending from a distal end of the sheath; moving material to be removed into engagement with the rotating auger at the distal end so as to cut the material; and conveying material cut by the auger along a longitudinal extent of the auger between the rotating auger and the sheath to a reservoir; the step of moving material to be removed into engagement with the rotating auger comprising inserting an engaging device through a central opening in the auger so as to extend into engagement with the material to be removed, engaging the material and pulling it into contact with the rotating auger.
Claim 50
Dependent Claim
40 words
The method of claim 46, further comprising contacting the material with the distal end of the sheath, with the distal end of the sheath engaging the material to prevent rotation of the material when the auger cuts into the material.
Claim 51
Dependent Claim
14 words
The method of claim 46, further comprising maintaining a pressurized atmosphere within the sheath.
Claim 52
Dependent Claim
11 words
The method of claim 46, further comprising manually rotating the auger.
Claim 53
Dependent Claim
15 words
The method of claim 46, further comprising rotating the auger using an electric drive motor.
Claim 54
Dependent Claim
16 words
The method of claim 46, further comprising rotating the auger using a pneumatic or hydraulic drive.
Claim 55
Dependent Claim
52 words
The method of claim 46, wherein the step of moving material to be removed into engagement with the auger comprises inserting a corkscrew engaging device into contact with the material to be removed, twisting the corkscrew into the material and retracting the corkscrew to bring the material into engagement with the auger.
Claim 56
Dependent Claim
50 words
The method of claim 46, further comprising providing an opening in a cylindrical surface of the sheath, moving material to be removed into engagement with the rotating auger exposed through the window, thereby cutting the material, and conveying the cut material along the auger in the sheath to the reservoir.
Claim 57
Dependent Claim
11 words
The method of claim 46 wherein the material comprises biological tissue.
Claim 58
Independent Claim
82 words
A method for removal of material comprising: rotating an auger having a cutting blade in a hollow cylindrical sheath; providing an opening in a cylindrical surface of the sheath, thereby exposing the cutting blade of the rotating auger; moving material to be removed into engagement with the rotating auger through the opening so as to cut the material; and conveying tissue cut by the auger along a longitudinal extent of the auger between the rotating auger and the sheath to a reservoir.
Claim 59
Independent Claim
82 words
A method for removal of material comprising: rotating an auger having a cutting blade in a hollow cylindrical sheath; providing an opening in a cylindrical surface of the sheath, thereby exposing the cutting blade of the rotating auger; moving material to be removed into engagement with the rotating auger through the opening so as to cut the material; and conveying tissue cut by the auger along a longitudinal extent of the auger between the rotating auger and the sheath to a reservoir.
Claim 60
Dependent Claim
14 words
The method of claim 55, further comprising maintaining a pressurized atmosphere within the sheath.
Claim 61
Dependent Claim
11 words
The method of claim 55, further comprising manually rotating the auger.
Claim 62
Dependent Claim
15 words
The method of claim 55, further comprising rotating the auger using an electric drive motor.
Claim 63
Dependent Claim
16 words
The method of claim 55, further comprising rotating the auger using a pneumatic or hydraulic drive.
Claim 64
Dependent Claim
47 words
The method of claim 55, further comprising providing the sheath with an open distal end with the auger extending from the open distal end; and moving material to be removed into engagement with the rotating auger at the distal end of the sheath to cut the material.
Claim 65
Dependent Claim
60 words
The method of claim 60, wherein the step of moving material to be removed into engagement with the rotating auger at the distal end comprises inserting an engaging device through a central opening in the auger so as to extend into engagement with the material to be removed, engaging the material and pulling it into contact with the rotating auger.
Claim 66
Dependent Claim
40 words
The method of claim 61, further comprising contacting the material with the distal end of the sheath, with the distal end of the sheath engaging the material to prevent rotation of the material when the auger cuts into the material.
Claim 67
Dependent Claim
52 words
The method of claim 61, wherein the step of moving material to be removed into engagement with the auger comprises inserting a corkscrew engaging device into contact with the material to be removed, twisting the corkscrew into the material and retracting the corkscrew to bring the material into engagement with the auger.
Claim 68
Dependent Claim
11 words
The method of claim 55, wherein the material comprises biological tissue.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |