摘要:
A medical device includes a shaft having a distal end and a distal tip. An anchor mechanism is coupled to the distal end proximal to the distal tip. The anchor mechanism includes a rolled sheet of material and a sleeve located to surround the rolled sheet of material to maintain the rolled sheet of material in an initial rolled configuration, and is configured such that when the sleeve is retracted, the rolled sheet of material unrolls to expand radially to anchor the medical device.
摘要:
A mass includes particles that exhibit an in vivo lifetime and that include a bioresorbable material and bubble cavities disposed in the particles, wherein the bubble cavities have length, width, and height dimensions at least one of which is less than or equal to about 2000 microns. The mass exhibits enhanced detectability by ultrasound energy during the lifetime; the lifetime begins upon exposure to in vivo fluids and ends between about 2 and about 20 weeks afterward; and a zero or non-zero fluid-to-solid ratio.
摘要:
A system for at least partially filling and marking a cavity within a patient includes a delivery device. A quantity of marker forming fluid is located within the delivery device. The quantity of marker forming fluid is configured to at least partially fill the cavity and form therein a bioabsorbable body after delivery into the cavity from the delivery device. A radiopaque marker, separate from the quantity of marker forming fluid and releasably attached to a portion of the delivery device, is configured to be delivered into the quantity of marker forming fluid in the cavity from the delivery device and configured to remain in the bioabsorbable body upon the formation of the bioabsorbable body in the cavity.
摘要:
The invention provides materials, devices and methods for marking biopsy sites for a limited time. The biopsy-marking materials are ultrasound-detectable bio-resorbable powders, with powder particles typically between about 20 microns and about 800 microns in maximum dimension, more preferably between about 300 microns and about 500 microns. The powders may be formed of polymeric materials containing cavities sized between about 10 microns and about 500 microns, and may also contain binding agents, anesthetic agents, hemostatic agents, and radiopaque markers. Devices for delivering the powders include tubes configured to contain the powders and to fit within a biopsy cannula, the powders being ejected by action of a syringe. Systems may include a tube containing powder, and a syringe containing sterile saline. The tube may be configured to fit within a biopsy cannula such as a Mammotome® or SenoCor 360™ cannula.
摘要:
A system for at least partially filling and marking a cavity at a site within a patient's body includes a marker delivery device having a chamber configured to contain a marking substance and having a mechanism configured to expel the marking substance. A quantity of the marking substance is contained within the chamber of the marker delivery device. The marking substance is configured to at least partially fill the cavity and form therein a porous bioabsorbable body. A delivery tube is coupled in fluid communication with the chamber of the marker delivery device. The delivery tube has a distal end with a discharge port through which the marking substance is expelled. A marker is configured to be delivered to the cavity from the distal end of the delivery tube and is configured to remain with the porous bioabsorbable body within the cavity upon the formation thereof.
摘要:
A system for at least partially filling and marking a cavity within a patient includes a delivery device. A quantity of marker forming fluid is located within the delivery device. The quantity of marker forming fluid is configured to at least partially fill the cavity and form therein a bioabsorbable body after delivery into the cavity from the delivery device. A radiopaque marker, separate from the quantity of marker forming fluid and releasably attached to a portion of the delivery device, is configured to be delivered into the quantity of marker forming fluid in the cavity from the delivery device and configured to remain in the bioabsorbable body upon the formation of the bioabsorbable body in the cavity.
摘要:
A method of marking a biopsy site within a patient's body includes providing a delivery tube having a plunger; carrying a quantity of an ultrasound-detectable bio-resorbable particulate material in the delivery tube distal to the plunger, the ultrasound-detectable bio-resorbable particulate material having a particle size between about 200 microns and about 500 microns and having internal bubble cavities having a size of at least 50 microns; and depressing the plunger for depositing the quantity of the ultrasound-detectable bio-resorbable particulate material at the biopsy site.
摘要:
A method of marking a biopsy site within a patient's body includes providing a delivery tube having a plunger; carrying a quantity of an ultrasound-detectable bio-resorbable particulate material in the delivery tube distal to the plunger, the ultrasound-detectable bio-resorbable particulate material having a particle size between about 200 microns and about 500 microns and having internal bubble cavities having a size of at least 50 microns; and depressing the plunger for depositing the quantity of the ultrasound-detectable bio-resorbable particulate material at the biopsy site.
摘要:
A tissue marker delivery device includes an elongated marker insertion tube having a closed distal end. The closed distal end has a plurality of connected slits that form a plurality of openable petals. A piston is slidably disposed within the elongated marker insertion tube. At least one tissue marker is slidably disposed within the elongated marker insertion tube at a location distal to the piston and proximal to the closed distal end of the elongated marker insertion tube.
摘要:
A device and method for treatment of a tissue specimen disposed in surrounding tissue includes isolating the tissue specimen from the surrounding tissue by using a separating device to sever and separate the tissue specimen from the surrounding tissue; damaging the isolated tissue specimen with a tissue specimen damaging device; and using an encapsulating device to encapsulate the isolated and damaged tissue specimen, the encapsulating device configured for operation independent from the separating device and the tissue specimen damaging device.