US20030050574A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone biopsy instrument having improved sample retention
Assignee: CareFusion 2200 Inc
•
Filing: 2002-10-25
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Granted: —
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Expires: 2022-10-25
Abstract
Abstract The invention disclosed herein relates to a sampling cannula for use in bone marrow biopsy procedures having structural features which facilitate sample retention within the device. In particular, the sampling cannula comprises an open trough-like portion, wherein the trough-like portion comprises at least one wall opening located proximal to the distal end in combination with an interior surface comprising a friction-enhancing surface texture adapted to facilitate sample retention. The invention further provides for a bone marrow biopsy system comprising an outer cannula having a sharpened distal tip, a sampling cannula having a distal trough portion in which the interior surface of the sampling cannula is exposed, at least one wall opening located within the trough portion located proximal to the distal tip of the sampling cannula, a friction-enhancing surface texture on at least a portion of the interior surface of the trough portion, wherein the sampling cannula is adapted to be inserted into an outer cannula and to sever a sample from the sampling site by rotational motion of the sampling cannula, and a stylet structured to be removably inserted into the outer cannula. The bone biopsy system can further include an ejector rod for expelling the retained sample from the sampling cannula.
Inventors
- 👤 John Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B2010/0258
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
96 words
1 . A sampling cannula for use in bone marrow biopsy system comprising: a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said device is adapted to be inserted into an outer cannula and to sever a sample from the sampling site by rotational motion of the sampling cannula.
Claim 2
Dependent Claim
96 words
1 . A sampling cannula for use in bone marrow biopsy system comprising: a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said device is adapted to be inserted into an outer cannula and to sever a sample from the sampling site by rotational motion of the sampling cannula.
Claim 3
Dependent Claim
19 words
2 . The sampling cannula according to claim 1 wherein the trough portion comprises a plurality of wall openings.
Claim 4
Dependent Claim
17 words
3 . The sampling cannula according to claim 2 wherein the trough portion comprises three wall openings.
Claim 5
Dependent Claim
35 words
4 . The sampling cannula according to claim 2 wherein the wall openings have a generally rectangular shape, the longer sides of the rectangle being substantially perpendicular to the longitudinal axis of the sampling cannula.
Claim 6
Dependent Claim
25 words
5 . The sampling cannula according to claim 1 further comprising markings located on the exterior surface of the proximal portion of the sampling cannula.
Claim 7
Dependent Claim
16 words
6 . The sampling cannula according to claim 5 wherein said markings comprise sampling depth indicia.
Claim 8
Dependent Claim
21 words
7 . The sampling cannula according to claim 1 wherein the proximal portion of the sampling cannula further comprises a hub.
Claim 9
Dependent Claim
23 words
8 . The sampling cannula according to claim 7 wherein the sampling cannula hub further comprises orientation indicia relative to the trough portion.
Claim 10
Dependent Claim
113 words
9 . A bone marrow biopsy system comprising: an outer cannula having a sharpened distal tip; a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said sampling cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said sampling cannula is adapted to be inserted into an outer cannula and to sever a sample from the sampling site by rotational motion of the sampling cannula; and a stylet structured to be removably inserted into said outer cannula.
Claim 11
Dependent Claim
113 words
9 . A bone marrow biopsy system comprising: an outer cannula having a sharpened distal tip; a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said sampling cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said sampling cannula is adapted to be inserted into an outer cannula and to sever a sample from the sampling site by rotational motion of the sampling cannula; and a stylet structured to be removably inserted into said outer cannula.
Claim 12
Dependent Claim
45 words
10 . The bone marrow biopsy system according to claim 9 wherein the distal tip of the trough portion of the sampling cannula resides within the outer cannula such that the trough portion distal tip terminates proximal to the distal tip of the outer cannula.
Claim 13
Dependent Claim
16 words
11 . The bone marrow biopsy system according to claim 9 further comprising an ejector rod.
Claim 14
Dependent Claim
19 words
12 . The bone marrow biopsy system according to claim 11 wherein said ejector rod is composed of plastic.
Claim 15
Dependent Claim
23 words
13 . The bone marrow biopsy system according to claim 9 wherein the sampling cannula trough portion comprises a plurality of wall openings.
Claim 16
Dependent Claim
21 words
14 . The bone marrow biopsy system according to claim 13 wherein the sampling cannula trough portion comprises three wall openings.
Claim 17
Dependent Claim
39 words
15 . The bone marrow biopsy system according to claim 13 wherein the sampling cannula wall openings have a generally rectangular shape, the longer sides of the rectangle being substantially perpendicular to the longitudinal axis of the sampling cannula.
Claim 18
Dependent Claim
31 words
16 . The bone marrow biopsy system according to claim 9 wherein the sampling cannula further comprises markings located on the exterior surface of the proximal portion of the sampling cannula.
Claim 19
Dependent Claim
38 words
17 . The bone marrow biopsy system according to claim 16 wherein the sampling cannula markings comprise sampling depth indicia that are viewable upon displacement of the sampling cannula in the proximal direction relative to the outer cannula.
Claim 20
Dependent Claim
23 words
18 . The bone marrow biopsy system according to claim 9 wherein the proximal portion of said sampling cannula further comprises a hub.
Claim 21
Dependent Claim
24 words
19 . The bone marrow system according to claim 18 wherein the sampling cannula hub further comprises orientation indicia relative to the trough portion.
Claim 22
Dependent Claim
103 words
20 . A bone marrow biopsy system comprising: a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said sampling cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said sampling cannula is adapted to sever a sample from the sampling site by rotational motion of the sampling cannula; and an ejector rod structured for removable insertion into said sampling cannula to expel a sample residing therein.
Claim 23
Dependent Claim
103 words
20 . A bone marrow biopsy system comprising: a sampling cannula having a distal trough portion in which the interior surface of said sampling cannula is exposed; at least one wall opening located within said trough portion located proximal to the distal tip of said sampling cannula; a friction-enhancing surface texture on at least a portion of the interior surface of said trough portion; wherein said sampling cannula is adapted to sever a sample from the sampling site by rotational motion of the sampling cannula; and an ejector rod structured for removable insertion into said sampling cannula to expel a sample residing therein.
Claim 24
Dependent Claim
41 words
21 . The bone marrow biopsy system according to claim 20 wherein the proximal portion of said sampling cannula comprises sampling depth indicia that are viewable upon displacement of the sampling cannula in the proximal direction relative to the outer cannula.
Claim 25
Dependent Claim
22 words
22 . The bone marrow biopsy system according to claim 20 wherein the proximal end of said sampling cannula comprises a hub.
Claim 26
Dependent Claim
23 words
23 . The bone marrow biopsy system according to claim 22 wherein the hub further comprises orientation indicia relative to the trough portion.
References Cited (Backward Citations)
US2219605A
Cited
US2827039A
Cited
US3007471A
Cited
US3175554A
Cited
US3554185A
Cited
US3606878A
Cited
US3844272A
Cited
US3570498A
Cited
US4010737A
Cited
US3882849A
Cited
US4013080A
Cited
US4096860A
Cited
US4095860A
Cited
US4356828A
Cited
US4649918A
Cited
US4396021A
Cited
US5279306A
Cited
US4922602A
Cited
US5279306B1
Cited
US4543966A
Cited
US4356282A
Cited
US4461305A
Cited
US4403617A
Cited
US4469109A
Cited
US4619272A
Cited
US4643196A
Cited
US4747414A
Cited
US4708147A
Cited
US4702260A
Cited
US4817631A
Cited
US4682606A
Cited
US4699154A
Cited
US4766907A
Cited
US4799494A
Cited
US4681123A
Cited
US4774948A
Cited
US4931059A
Cited
US4838282A
Cited
USD303009S
Cited
US4785826A
Cited
US4799495A
Cited
US4781202A
Cited
US4798213A
Cited
US4936313A
Cited
US4953558A
Cited
US5080655A
Cited
US5195988A
Cited
US4873991A
Cited
US4903709A
Cited
US4986279A
Cited
US5012818A
Cited
US5368045A
Cited
US4958625A
Cited
US5341816A
Cited
US5036860A
Cited
US5031634A
Cited
US5224470A
Cited
US5713368A
Cited
US5348022A
Cited
US5040542A
Cited
US5027827A
Cited
US5127916A
Cited
US5284156A
Cited
US5462062A
Cited
US5885226A
Cited
US5333619A
Cited
US5595186A
Cited
US5385151A
Cited
US5257632A
Cited
US5318543A
Cited
US5357974A
Cited
US5429138A
Cited
US5526821A
Cited
US5487392A
Cited
US5718237A
Cited
US5868684A
Cited
US5522398A
Cited
US5634473A
Cited
US5394887A
Cited
US5449001A
Cited
US5507298A
Cited
US5788651A
Cited
US5655542A
Cited
US5615690A
Cited
US5807277A
Cited
US5823970A
Cited
US5910121A
Cited
US5964716A
Cited
US5944673A
Cited
US6086543A
Cited
US6063037A
Cited
US6110128A
Cited
US20020042581A1
Cited
US6066153A
Cited
US6764452B1
Cited
US20020151822A1
Cited
US6428487B1
Cited
US20010005778A1
Cited
US6241687B1
Cited
US6416484B1
Cited
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