Biopsy device
First Claim
1. A biopsy needle introducer, comprising:
- a cannula having a first end and a second end and defining a lumen therebetween, the lumen sized to receive a biopsy needle therethrough;
the second end of the cannula defining an aperture, the aperture sized and configured to receive a biopsy needle for passage into the lumen;
said cannula defining a lateral opening in communication with the lumen adjacent said first end, the lateral opening sized and configured to allow exit of an anatomically proximal end of the biopsy needle from the lumen; and
a solid tip having an anatomically distal end secured to the first end of said cannula and a proximal end configured to pierce tissue, wherein the distal end of said tip has an outer diameter smaller than an inner diameter of the first end of the cannula and the distal end of said tip is at least partially disposed within said lumen at the first end of the cannula.
3 Assignments
0 Petitions
Accused Products
Abstract
A biopsy needle device (10) is provided which includes an introducer cannula (20) defining a lumen (25) sized to receive a biopsy needle (11) therethrough and a lateral opening (24) in communication with the lumen (25) adjacent the first end (21) of the cannula (20). The invention also includes a solid tip (30) having an anatomically distal end (31) secured to the first end (21) of the cannula (20) and a proximal end (32) configured to pierce tissue. A ramp (35) is disposed within the cannula (20) at an end (36) of the lateral opening (24) adjacent the first end (21) of the cannula (20). The ramp (35) is inclined toward the lateral opening (24), whereby a biopsy needle (11) will be deflected through the lateral opening (24) as it advances within the lumen (25) and exits the cannula (20). The invention also includes methods of obtaining a biopsy sample using the biopsy device 10 in which a sample is taken, the biopsy needle (11) is retracted, the cannula (20) is rotated and the needle 11 is readvanced to obtain another sample from a different site.
245 Citations
44 Claims
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1. A biopsy needle introducer, comprising:
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a cannula having a first end and a second end and defining a lumen therebetween, the lumen sized to receive a biopsy needle therethrough; the second end of the cannula defining an aperture, the aperture sized and configured to receive a biopsy needle for passage into the lumen; said cannula defining a lateral opening in communication with the lumen adjacent said first end, the lateral opening sized and configured to allow exit of an anatomically proximal end of the biopsy needle from the lumen; and a solid tip having an anatomically distal end secured to the first end of said cannula and a proximal end configured to pierce tissue, wherein the distal end of said tip has an outer diameter smaller than an inner diameter of the first end of the cannula and the distal end of said tip is at least partially disposed within said lumen at the first end of the cannula. - View Dependent Claims (2, 3, 4, 5, 8, 9)
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6. A biopsy needle introducer, comprising:
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a cannula having a first end and a second end and defining a lumen therebetween, the lumen sized to receive a biopsy needle therethrough; the second end of the cannula defining an aperture, the aperture sized and configured to receive a biopsy needle for passage into the lumen; said cannula defining a lateral opening in communication with the lumen adjacent said first end, the lateral opening sized and configured to allow exit of an anatomically proximal end of the biopsy needle from the lumen; a solid tip having an anatomically distal end secured to the first end of said cannula and a proximal end configured to pierce tissue; and an introducer stylet sized to be received within the lumen, the introducer stylet having a length sufficient to block the lateral opening when the introducer stylet is received within the lumen. - View Dependent Claims (7)
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10. A biopsy device, comprising:
- an introducer including
a cannula having a first end and a second end and defining a lumen therebetween, a tip disposed at the first end of the cannula and closing the lumen, the cannula defining an aperture at the second end of the cannula, the aperture sized and configured to receive a biopsy needle, and said cannula defining a lateral opening in communication with the lumen adjacent said first end, the lateral opening sized and configured to allow exit of a biopsy needle from the lumen; and a hollow biopsy needle having an anatomically proximal end and a distal end, said needle sized and configured to be movably and rotatably received within the lumen, the proximal end sized and configured to exit from said lumen through the lateral opening and having an edge to pierce tissue to obtain a biopsy sample when the biopsy needle is advanced into the tissue. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- an introducer including
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21. A biopsy needle introducer, comprising:
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a cannula having a first end and a second end and defining a lumen therebetween, the lumen sized to receive a biopsy needle therethrough; the second end of the cannula defining an aperture, the aperture sized and configured to receive a biopsy needle; a hub attached to the second end of the cannula, said hub including a gripping portion configured to be held when inserting and positioning the introducer, said hub defining a channel having a first end and a second end, the first end of the channel in communication with the aperture for delivering a biopsy needle to the cannula; and flange means projecting from said hub at a location anatomically distal from the gripping portion for preventing inadvertent needle sticks when a biopsy needle is inserted into the introducer. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of obtaining a biopsy sample, comprising:
- providing a biopsy introducer, said introducer having
a cannula having a first end and a second end and defining a lumen therebetween; a tip disposed at the first end of the cannula and closing the lumen at the first end; the lumen having an aperture at the second end of the cannula, the aperture sized and configured to receive a biopsy needle; the cannula defining a lateral opening in communication with the lumen, the lateral opening sized and configured to allow exit of a biopsy needle from the lumen; and a ramp disposed within said cannula at an end of the lateral opening adjacent the first end of the cannula, the ramp being inclined toward the lateral opening, whereby a biopsy needle will be deflected through the lateral opening as it exits the cannula; inserting the introducer into the patient at the biopsy site; inserting a biopsy needle having an anatomically proximal end and a distal end through the aperture and into the lumen; advancing the biopsy needle through the lumen so that the proximal end of the biopsy needle projects through the lateral opening at an angle relative to the introducer and into a first biopsy sample site to obtain a first biopsy sample; and withdrawing the proximal end of the biopsy needle from the first biopsy sample site and into the lumen of the introducer. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
- providing a biopsy introducer, said introducer having
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40. A method of making a biopsy device, comprising:
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providing a hollow cannula defining a lumen sized to receive a biopsy needle and a lateral opening at a first end of the cannula, the lateral opening in communication with the lumen, the lateral opening sized and configured to allow exit of an anatomically proximal end of the biopsy needle from the lumen; attaching a hub to the second end of the cannula, the hub defining a channel in communication with the lumen; and securing an anatomically distal end of a solid tip to the first end of the cannula, the tip having a proximal end configured to pierce tissue, the distal end of the tip being sloped to form a ramp adjacent to and inclined proximally toward said lateral opening, whereby a biopsy needle will be deflected as it advances through the lumen and exits the cannula through the lateral opening. - View Dependent Claims (41, 42, 43, 44)
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Specification