Biopsy device with inner cutter
First Claim
1. An tissue biopsy device for accessing and collecting a tissue specimen from a target site within a patient, comprising:
- a. a housing having at least one drive unit;
b. an elongated probe member which has a longitudinal axis, which has a proximal end configured to be releasably secured to the drive housing in a plurality of discrete orientations about the longitudinal axis prior to insertion into the patient'"'"'s body, which has an inner lumen extending therein, which has a tissue penetrating distal tip and which has an open section proximal to the tissue penetrating distal tip configured to receive tissue from the target site; and
c. an elongated tissue cutter which is slidably disposed within the elongated probe member, which has a tissue cutting surface, which defines at least in part an inner lumen extending therein for receiving a tissue specimen, which is operably connected to at least one drive unit to move the tissue cutter to cut a tissue specimen from tissue extending into the open tissue receiving section of the elongated member.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention is directed to devices and methods for accessing a desired target site within a patient'"'"'s body and for separating and collecting a tissue specimen from the target site. The device includes a probe member or cannula with a penetrating distal tip, and a tissue cutting member which is disposed within the probe member to cut a tissue specimen from supporting tissue at the biopsy site. This probe is releasably secured to a housing to provide a plurality of discrete orientations of the probe about its longitudinal axis. Vacuum may be provided to the inner lumen of the cutting member to transport tissue through the inner lumen thereof. Rotation (and optionally longitudinal reciprocation) of the tissue cutter is effective to separate a tissue specimen from surrounding tissue at the target site. Vacuum or fluid pressure may be used to move the specimen cut from the target site proximally within the inner lumen defined at least in part by the cutting member for collection. An elongated accessing cannula having an tissue receiving aperture communicating with an inner lumen of the accessing cannula, may be provided with the device and is preferably concentrically disposed within the probe member and about the tissue cutter. The tissue cutting surface of the tissue cutter preferably is longitudinally oriented and may be at an angle with respect to the longitudinal axis of the tissue cutter.
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Citations
44 Claims
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1. An tissue biopsy device for accessing and collecting a tissue specimen from a target site within a patient, comprising:
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a. a housing having at least one drive unit;
b. an elongated probe member which has a longitudinal axis, which has a proximal end configured to be releasably secured to the drive housing in a plurality of discrete orientations about the longitudinal axis prior to insertion into the patient'"'"'s body, which has an inner lumen extending therein, which has a tissue penetrating distal tip and which has an open section proximal to the tissue penetrating distal tip configured to receive tissue from the target site; and
c. an elongated tissue cutter which is slidably disposed within the elongated probe member, which has a tissue cutting surface, which defines at least in part an inner lumen extending therein for receiving a tissue specimen, which is operably connected to at least one drive unit to move the tissue cutter to cut a tissue specimen from tissue extending into the open tissue receiving section of the elongated member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A tissue biopsy device for accessing and collecting a tissue specimen from a target site within a patient, comprising:
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a. a drive housing which has a plurality of drive units;
b. an outer member which is releasably secured to the drive housing, which has a proximal tubular portion, which has an inner lumen extending within the proximal tubular portion, which has a tissue penetrating distal tip, which has an open section proximal to the tissue penetrating distal tip and which has a supporting strut extending from the penetrating distal tip to the proximal tubular portion;
c. a tissue accessing cannula which is slidably disposed at least in part within the inner lumen of the proximal tubular portion of the outer member, which has an inner lumen extending therein, and which has a tissue receiving aperture spaced proximal to the distal end thereof in fluid communication with the inner lumen of the accessing cannula and which is operably secured to a drive unit in the drive housing to rotate the tissue receiving cannula to adjust the orientation of the tissue receiving aperture; and
d. an elongated tissue cutter which is formed at least in part of a tubular member, which is slidably disposed within the inner lumen of the tissue accessing cannula, which has a tissue cutting surface, which has an inner lumen extending therein configured to receive a tissue specimen cut by the tissue cutter, and which is connected to a drive unit to move the tissue cutter within the inner lumen of the tissue accessing cannula. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A probe for a tissue biopsy device for accessing and collecting a tissue specimen from a target site within a patient, comprising:
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a. an outer member which has a proximal tubular portion configured to be releasably secured to a drive housing, which has an inner lumen extending therein, which has a tissue penetrating distal tip, which has an open section proximal to the penetrating distal tip and a supporting strut extending from the penetrating distal tip to the proximal tubular portion;
b. a tissue accessing cannula which is slidably disposed at least in part within the inner lumen of the tubular portion of the outer member, which has an inner lumen extending therein, and which has a tissue receiving aperture spaced proximal to the distal end thereof in fluid communication with the inner lumen of the accessing cannula and which is configured to be operably secured to a drive unit in a drive housing to rotate the tissue receiving cannula to adjust the orientation of the tissue receiving aperture; and
c. an elongated tissue cutting member which is slidably disposed within the inner lumen of the tissue accessing cannula, which has at least one longitudinal tissue cutting surface, which defines at least in part an inner lumen for receiving tissue cut by the tissue cutting surface, and which is connected to a drive unit to move the tissue cutter within the inner lumen of the tissue accessing cannula. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A method of separating a biopsy tissue specimen from supporting tissue at a target site within a patient'"'"'s body, comprising:
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a. providing a biopsy device having a biopsy probe comprising;
i. an outer member which is releasably secured to a drive housing, which has an inner lumen extending therein, which has a tissue penetrating distal tip secured thereto, which has an open section proximal to the penetrating distal tip and a supporting strut extending from the penetrating distal tip;
ii. a tissue accessing cannula which is slidably disposed at least in part within the inner lumen of the outer member, which has an inner lumen extending therein, and which has a tissue receiving aperture spaced proximal to the distal end thereof in fluid communication with the inner lumen of the accessing cannula and which is operably secured to a drive unit in the drive housing to rotate the tissue receiving cannula to adjust the orientation of the tissue receiving aperture, and iii. an elongated tissue cutting member which is formed at least in part of a tubular member, which is slidably disposed within the inner lumen of the tissue accessing cannula, which has at least one tissue cutting surface, which has an inner lumen extending therein for receiving a tissue specimen cut by the tissue cutting surface, and which is connected to a drive unit to move the tissue cutter within the inner lumen of the tissue accessing cannula;
b. advancing the probe at least partially into or adjacent to tissue at the target site;
c. exposing the aperture of the accessing cannula to tissue at the tissue site;
d. applying a vacuum to the inner lumen of the tissue accessing cannula or the tissue cutter to draw tissue from the tissue site into the inner lumen of the accessing cannula;
e. rotating the tissue cutter to cut tissue drawn into the inner lumen from supporting tissue at the tissue site; and
f. transporting a tissue specimen through the inner lumen of the tissue cutter. - View Dependent Claims (38, 39, 40)
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41. A probe for a tissue biopsy device for accessing and collecting a tissue specimen from a target site within a patient, comprising:
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a. an outer tubular member which has an inner lumen extending therein, which has a tissue penetrating distal tip, and which has a tissue receiving aperture proximal to the penetrating distal tip in fluid communication with the inner lumen; and
b. an elongated tissue cutter which is formed at least in part of a tubular member, which is rotatably disposed within the inner lumen of the outer member, which has a longitudinal axis, which has a longitudinal tissue cutting surface oriented at an angle with respect to the longitudinal axis, which has an inner lumen extending therein for receiving tissue cut by the tissue cutting surface and which is configured for rotation within the inner lumen of the outer member to cut tissue pulled into the inner lumen of the tissue cutter. - View Dependent Claims (42, 43, 44)
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Specification