Bone marrow biopsy device
First Claim
1. A bone marrow biopsy device comprising:
- an outer cannula having a proximal end, a distal end and a substantially hollow cross-section between said proximal and distal ends;
said outer cannula having a handle portion associated with said proximal end thereof, said handle portion including a front portion, a rear portion, a top portion, a bottom portion and at least one grip enhancement member associated with at least one of said front, rear, top and bottom portions, at least a portion of said at least one grip enhancement member formed from a material distinct from at least a portion of said handle portion to facilitate handling and use of said bone marrow biopsy device.
23 Assignments
0 Petitions
Accused Products
Abstract
The present invention is directed to a bone marrow biopsy needle including an outer cannula having a proximal end, a distal end, a hollow section therebetween and a handle portion associated with the proximal end, and an inner rod having a proximal end, a distal end and a handle cap. The handle portion further includes a grip enhancement member which is formed from a material distinct from at least a portion of the handle portion, such as rubber. The grip enhancement member may take the form of insert members which fit into cavities in the handle portion of the outer cannula. The grip enhancement member not only enhances the gripping surface of the bone marrow biopsy needle, but also provides cushioning for a user and adds weight to the handle portion to facilitate weight distribution throughout the outer cannula handle.
152 Citations
19 Claims
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1. A bone marrow biopsy device comprising:
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an outer cannula having a proximal end, a distal end and a substantially hollow cross-section between said proximal and distal ends;
said outer cannula having a handle portion associated with said proximal end thereof, said handle portion including a front portion, a rear portion, a top portion, a bottom portion and at least one grip enhancement member associated with at least one of said front, rear, top and bottom portions, at least a portion of said at least one grip enhancement member formed from a material distinct from at least a portion of said handle portion to facilitate handling and use of said bone marrow biopsy device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
an inner rod having a proximal end and a distal end, said inner rod being slidable within said outer cannula, said inner rod having a handle cap associated with said proximal end thereof, said handle cap capable of securable engagement with said handle portion of said outer cannula to facilitate simultaneous insertion of said outer cannula and said inner rod into and removal from a patient.
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12. The bone marrow biopsy device according to claim 11 wherein at least a portion of said grip enhancement member extends outwardly beyond at least a portion of said handle portion of said outer cannula to enhance the secured engagement of said outer cannula with said inner rod when at least a portion of said handle cap is positioned over at least a portion of said handle portion of said outer cannula in a locking orientation.
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13. The bone marrow biopsy device according to claim 12 wherein said grip enhancement member further includes an outer surface having a contour, said contour enhancing said secured engagement of said handle portion of said outer cannula with said handle cap of said inner rod when positioned in a locking orientation.
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14. The bone marrow biopsy device according to claim 11 wherein said inner rod further includes a locking member for releasably locking said handle cap onto said handle portion of said outer cannula.
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15. The bone marrow biopsy device according to claim 11 wherein said inner rod further includes an alignment member for directing proper orientation of said handle cap of said inner rod with said handle portion of said outer cannula.
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16. The bone marrow biopsy device according to claim 11 wherein said grip enhancement member defines at least one alignment indicia, said alignment indicia directing proper orientation of said handle cap onto said handle portion when said inner rod is inserted into said outer cannula.
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17. The bone marrow biopsy needle according to claim 1 wherein said inner rod comprises at least one of an inner cannula, a stylet, an obturator and an ejector rod.
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18. The bone marrow biopsy device according to claim 1 wherein said handle portion further includes finger grooves to facilitate handling and use of said bone marrow biopsy device.
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19. A method for forming a bone marrow biopsy device, said method comprising the steps of:
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attaching a handle portion to a proximal end of an outer cannula, said outer cannula having a proximal end, a distal end, a substantially hollow cross-section between said proximal and distal ends, and associating a at least one grip enhancement member, at least a portion of said grip enhancement member formed from a material distinct from at least a portion of said handle portion, with said handle portion of said outer cannula.
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Specification