Proximal actuation handle for a biopsy forceps instrument having irrigation and aspiration capabilities
First Claim
1. A biopsy forceps instrument for retrieving a tissue sample from a patient, comprising:
- (a) a flexible tubular member having proximal and distal ends;
(b) an aspiration conduit within the flexible tubular member and adapted to provide a conduit through which the tissue sample is aspirated from the patient;
(c) a distal end effector assembly coupled to said distal end of said flexible tubular member;
(d) at least one flexible pull wire extending through said flexible tubular member from the proximal end to the distal end;
(e) a proximal actuation handle coupled to the at least one flexible pull wire so that actuation of the handle tensions and moves the flexible pull wire thereby actuating the end effector assembly to obtain the tissue sample; and
(f) a sample catch assembly coupled to said aspiration conduit and adapted to receive the sample from said aspiration conduit and retain the sample.
2 Assignments
0 Petitions
Accused Products
Abstract
A biopsy forceps instrument is provided having a proximal actuation handle, a flexible multi-lumen tubular member, at least one control member extending through a lumen, an irrigation means, an aspiration means, and a distal assembly. The proximal actuation handle includes a shaft and a spool slidably mounted on the shaft. The actuation handle is coupled to the proximal ends of both the flexible tubular member and the control member. Lumens of the tubular member form irrigation and aspiration conduits. The distal assembly includes a hollow jaw cup coupled to the aspiration conduit and a hollow movable jaw coupled adjacent the irrigation conduit. The movable jaw is coupled to the control member, such that actuation of the actuation handle moves the movable jaw relative to the jaw cup. Moving the hollow jaws into a closed position provides a substantially fluidtight coupling between the irrigation and aspiration conduits. The actuation handle is also provided with an assembly to control irrigation to and aspiration from the distal assembly. A proximal sample chamber having a removable screen is provided for filtering tissue samples aspirated from the distal assembly. The jaws are activated to cut a tissue sample and the irrigation and aspiration means are activated to move the sample into the sample chamber for retrieving the sample without removing the instrument from a patient.
188 Citations
31 Claims
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1. A biopsy forceps instrument for retrieving a tissue sample from a patient, comprising:
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(a) a flexible tubular member having proximal and distal ends; (b) an aspiration conduit within the flexible tubular member and adapted to provide a conduit through which the tissue sample is aspirated from the patient; (c) a distal end effector assembly coupled to said distal end of said flexible tubular member; (d) at least one flexible pull wire extending through said flexible tubular member from the proximal end to the distal end; (e) a proximal actuation handle coupled to the at least one flexible pull wire so that actuation of the handle tensions and moves the flexible pull wire thereby actuating the end effector assembly to obtain the tissue sample; and (f) a sample catch assembly coupled to said aspiration conduit and adapted to receive the sample from said aspiration conduit and retain the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 29)
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8. A biopsy forceps instrument for retrieving a tissue sample from a patient, comprising:
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(a) a flexible tubular member having proximal and distal ends; (b) an aspiration conduit within the flexible tubular member and adapted to provide a conduit through which the tissue sample is aspirated from the patient; (c) a distal end effector assembly coupled to said distal end of said flexible tubular member; (d) at least one flexible pull wire extending through said flexible tubular member; (e) a proximal actuation handle coupled to the at least one flexible pull wire so that actuation of the handle tensions and moves the flexible pull wire thereby actuating the end effector assembly to obtain the tissue sample; and (f) a filter insertable into and removably coupled to an external opening in said aspiration conduit, said filter being adapted to retain the tissue sample aspirated through said aspiration conduit. - View Dependent Claims (9, 10, 30)
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11. A biopsy forceps instrument for use with an endoscope to retrieve a tissue sample from a patient, comprising:
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(a) a flexible tubular member having proximal and distal ends; (b) an aspiration conduit within the flexible tubular member and adapted to provide a conduit through which the tissue sample is aspirated from the patient; (c) a distal end effector assembly coupled to said distal end of said flexible tubular member; (d) at least one flexible pull wire extending through said flexible tubular member; (e) a proximal actuation handle coupled to the at least one flexible pull wire so that actuation of the handle tensions and moves the flexible pull wire thereby actuating the end effector assembly to obtain the tissue sample; and (f) a control device coupled to said proximal actuation handle to regulate the aspiration through said aspiration conduit. - View Dependent Claims (12, 31)
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13. A proximal actuation handle for a biopsy forceps instrument having a flexible tubular member with proximal and distal ends and an aspiration conduit, a distal end effector assembly coupled to the distal end of the flexible tubular member, at least one flexible pull wire extending through the flexible tubular member, and said proximal actuation handle coupled to the proximal end of the flexible tubular member, the biopsy forceps instrument for retrieving a tissue sample from a patient, said proximal actuation handle comprising:
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(a) a stationary member coupled to a first of the at least one flexible pull wire and the flexible tubular member; (b) a movable member movable relative to said stationary member and coupled to a second of the at least one flexible pull wire and the flexible tubular member, wherein movement of said movable member relative to said stationary member tensions and moves the at least one flexible pull wire relative to the flexible tubular member to actuate the distal end effector assembly so as to obtain the tissue sample; and (c) a sample catch assembly coupled to the aspiration conduit and coupled to the stationary member for receiving the sample from the aspiration conduit and retaining the sample. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A biopsy forceps instrument for retrieving tissue samples from a patient for use with an endoscope, comprising:
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(a) a flexible tubular member co-extruded with at least one support member, said flexible tubular member having an aspiration conduit and at least one irrigation conduit; (b) a distal assembly having a hollow first jaw and a hollow movable second jaw, said movable second jaw being pivotable relative to said first jaw and coupled to a first of said at least one irrigation conduit and said aspiration conduit, and said first jaw being coupled to a second of said at least one irrigation conduit and said aspiration conduit; (c) at least one flexible control member extending through said at least one irrigation conduit and coupled to said movable second jaw; and (d) a proximal actuation handle coupled to said at least one flexible control member for moving said at least one flexible control member relative to said flexible tubular member and tensioning said flexible control member so as to move said movable second jaw relative to said first jaw from an open position to a closed position, and wherein said movable second jaw and said first jaw are adapted such that when said movable second jaw and first jaw are in said closed position, said movable second jaw and first jaw form a fluid passage between said at least one irrigation conduit and said aspiration conduit. - View Dependent Claims (22, 23)
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24. A flexible tubular member for use with a biopsy forceps instrument for retrieving tissue samples from a patient for use with an endoscope, comprising:
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(a) a flexible multi-lumen tubular extrusion provided with an aspiration conduit and at least one irrigation conduit; and (b) at least one flexible support wire co-extruded with said flexible multi-lumen extrusion and having proximal and distal ends. - View Dependent Claims (25, 26, 27, 28)
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Specification