摘要:
Devices and methods for cutting and collecting a specimen from a mass of tissue. The device may include an integrated cut and collect assembly. The integrated cut and collect assembly includes a cutting portion and a collection portion that includes a flexible membrane. The collection portion of the assembly is attached to the cutting portion thereof. The cutting portion is configured to cut the specimen from the mass of tissue and the collection portion is configured to collect the cut specimen and to encapsulate and isolate the cut specimen within the membrane to enable its safe retraction from the mass of tissue.
摘要:
A method of removing breast tissue may include a step of providing a tissue cutting device having an elongate cutting element coupled to a shaft, in which the cutting element is movable between a bowed position and a retracted position. A deployed part of the cutting element may lie outside the shaft when in the bowed position, and the deployed part of the cutting element may have a cutting side which penetrates the tissue as the shaft is rotated. The tissue cutting device may be introduced into the breast and a power source may be coupled to the elongate cutting element. The elongate cutting element may be moved to the bowed position so that the deployed part of the cutting element lies outside the shaft. Energy may be prevented from being transmitted from a portion of the deployed part of the cutting element for cutting to the tissue while the elongate cutting element is in the bowed position. The cutting device may be rotated so that the cutting side of the bowed cutting element penetrates the breast tissue to cut the breast tissue for removal.
摘要:
The present invention is directed to tissue removal devices and methods. A tubular element having an open distal end is advanced into tissue so that tissue enters the tubular element. The tissue which entered the tubular element is cut to separate the tissue from the surrounding tissue. The tissue is then transported proximally by the cutting element or a separate transport element.
摘要:
Devices and methods for collecting or cutting and collecting a specimen from a mass of tissue within a patient. The device may include a specimen collection assembly including a flexible membrane that isolates collected specimen from the surrounding tissue. The collection device may also include structures that draw the collected specimen toward the shaft and/or otherwise ease the insertion and retraction of the device and the collected specimen from the patient through a small incision.
摘要:
The device is used to remove tissue from a patient and to also place a marker in the patient. The device has an opening through which tissue enters the device. The tissue which enters the opening is cut and the tissue is removed. The device may be used a number of times to remove a number of tissue masses. The device also includes a marker which the user may release in the patient at the desired time.
摘要:
A method of marking an orientation of a cut specimen of tissue prior to excision thereof from a body includes steps of disposing a tissue-marking probe in the body adjacent the cut specimen, the tissue-marking probe including a tissue-marking tool configured to selectively mark the cut specimen. A surface of the cut specimen is then marked with the tissue-marking tool such that the orientation of the cut specimen within the body is discernable after the cut specimen is excised from the body. The tissue-marking tool may be configured to selectively bow out of and back into a window defined near a distal tip of the probe and the marking step may include a step of selectively bowing the tissue-marking tool out of the window and following the surface of the cut specimen while rotating the probe. The tissue-marking tool may include an RF cutting tool and the marking step may include a step of coagulating or cauterizing a selected portion of the surface of the cut specimen with the RF cutting tool. Alternatively, the marking step may include a step of delivering dye onto selected portions of the surface of the cut specimen.
摘要:
An embodiment of a post-biopsy cavity treatment implant includes a first portion including a first porous matrix defining a first controlled pore architecture or crosslinking density, and a second portion coupled to the first portion. The second portion includes a second porous matrix that defines a second controlled pore architecture or a second crosslinking density that is different from the first controlled pore architecture or the first crosslinking density, causing the second portion to swell in a different manner than the first portion when the implant is placed in an aqueous environment.
摘要:
A method of treating a cavity created by a percutaneous excisional procedure carried out through an incision includes steps of providing a post-procedure cavity implant, the post-procedure cavity implant including: a radiopaque element; a core portion coupled to the radiopaque element, the core portion including a first porous matrix defining a first controlled pore architecture, and a shell portion coupled to the core portion, the shell portion including a second porous matrix defining a second controlled pore architecture that is different from the first controlled pore architecture; implanting the post-procedure cavity implant into the cavity, and closing the incision.
摘要:
An implant for filling a cavity created by an excisional procedure includes first and second portions. The first portion may include a first collagenous matrix that defines a first selected crosslinking density and the second portion may include a second collagenous matrix that defines a second selected cross-linking density that is different than the first cross-linking density. The first and second cross-linking densities may be selected so as to cause the first and second portions to swell in such a manner that the implant swells into a size and a shape that is similar to the predetermined size and shape of the cavity when the implant is implanted. An aqueous solution may be added to the cavity if the cavity is not sufficiently aqueous to cause the implant to swell.
摘要:
A method of marking a cavity in a breast for subsequent visualization may include steps of providing a device having a delivery opening, a first marker and a second marker, the first and second markers being movable through the delivery opening, the first marker being configured to be visualized by ultrasound and the second marker configured to be radiopaque, the first and second markers being free to move relative to one another; introducing the device into a breast so that the delivery opening is positioned in a cavity formed in the breast; and moving the first marker and the second marker through the delivery opening and into the cavity in the breast, the first and second markers being free to move relative to one another when delivered into the cavity so that the first and second markers may take a number of different positions relative to one another when positioned within the cavity.