Cytology collection device
First Claim
1. A medical apparatus comprising:
- a needle having a proximal end, a distal end, and an inner lumen extending from said proximal end to said distal end;
a stylet having a proximal end and a distal end, wherein said stylet is adapted to be inserted into and withdrawn from said inner lumen of said needle with at least a portion of said stylet adapted to plug said inner lumen of said needle when a cytology sample is cut; and
a cytology collection device having a proximal end and a distal end, wherein said cytology collection device is adapted to be inserted into said inner lumen of said needle when said stylet is withdrawn from the inner lumen of said needle, with said distal end of said cytology collection device adapted to extend beyond the distal end of said needle in order to collect said cytology sample.
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Accused Products
Abstract
Differing cytology device apparatuses, and methods for their use, are provided for collecting cytology samples from within a mammalian body. The apparatuses and methods disclosed are minimally invasive. Some of the apparatuses include a needle having an inner lumen extending from a proximal to a distal end. A stylet, having a proximal end and a distal end, is adapted to be inserted into the inner lumen of the needle to plug the inner lumen while a cytology sample is cut in order to prevent contamination within the needle. The distal end of the stylet may be sharp, and may be adapted to extend beyond the distal end of the needle to cut a cytology sample. Also included is a cytology collection device which is adapted to be inserted into the inner lumen of the needle when the stylet is withdrawn from the inner lumen of the needle. The distal end of the cytology collection device is extended beyond the distal end of the needle in order to collect the cytology sample, and then retracted inside the needle after collecting the sample. In one embodiment, a cytology collection device comprises an elongate member having a plurality of bristles near its distal end. In another embodiment, a cytology collection device comprises an inflatable balloon. In yet another embodiment, a cytology collection device comprises a wire mesh device. In a further embodiment, the apparatus may include an endoscope which contains a transducer emitting ultrasound waves which are used to determine a position of the cytology collection device within the body.
158 Citations
107 Claims
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1. A medical apparatus comprising:
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a needle having a proximal end, a distal end, and an inner lumen extending from said proximal end to said distal end;
a stylet having a proximal end and a distal end, wherein said stylet is adapted to be inserted into and withdrawn from said inner lumen of said needle with at least a portion of said stylet adapted to plug said inner lumen of said needle when a cytology sample is cut; and
a cytology collection device having a proximal end and a distal end, wherein said cytology collection device is adapted to be inserted into said inner lumen of said needle when said stylet is withdrawn from the inner lumen of said needle, with said distal end of said cytology collection device adapted to extend beyond the distal end of said needle in order to collect said cytology sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A medical apparatus for collecting a cytology sample from a mammalian body comprising:
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an endoscope containing a transducer, said endoscope defining a working lumen;
a member having a proximal end, a distal end, and an inner lumen, wherein said member extends into the working lumen of said endoscope; and
a cytology collection device having a proximal end, and a distal end for cytology collection, wherein said cytology collection device is adapted to be inserted into said inner lumen of said member, with said distal end of said cytology collection device adapted to extend beyond the distal end of said member in order to collect said cytology sample, wherein said transducer is adapted to emit ultrasound waves to determine a position of said cytology collection device within said mammalian body using said ultrasound waves. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A method for collecting a cytology sample from a mammalian body comprising:
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providing an apparatus comprising;
a needle having a proximal end, a distal end, and an inner lumen extending from said proximal end to said distal end;
a stylet having a proximal end and a distal end; and
a cytology collection device having a proximal end and a distal end for cytology collection;
inserting said stylet into said inner lumen of said needle, wherein at least a portion of said stylet plugs said inner lumen of said needle;
cutting an area within said mammalian body;
withdrawing said stylet from said inner lumen of said needle;
inserting said cytology collection device into said inner lumen of said needle so that said distal end of said cytology collection device extends beyond the distal end of said needle;
collecting said cytology sample from said mammalian body using said cytology collection device; and
retracting said distal end of said cytology collection device into said inner lumen of said needle. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84)
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85. A method for collecting a cytology sample from a mammalian body comprising:
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providing an apparatus comprising;
an endoscope, said endoscope defining a working lumen and containing a transducer;
a member having a proximal end, a distal end, and an inner lumen, wherein said member extends into the working lumen of said endoscope; and
a cytology collection device having a proximal end, and a distal end for cytology collection, wherein said cytology collection device extends into said inner lumen of said member;
inserting said working lumen of said endoscope into said mammalian body;
extending said distal end of said cytology collection device beyond the distal end of said member;
emitting ultrasound waves from said transducer of said endoscope;
reflecting said ultrasound waves off said cytology collection device;
receiving said reflected ultrasound waves using said transducer of said endoscope; and
determining a position of said cytology collection device within said mammalian body. - View Dependent Claims (86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107)
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Specification