摘要:
A biopsy device having a cutting element is disclosed. The cutting element includes an inner cannula having a tissue receiving aperture disposed proximate a distal end thereof and an inner lumen. The inner cannula is slidably disposed within the inner lumen of an outer cannula. A vacuum chamber is disposed about at least a portion of the cutting element and is configured to create a vacuum in the cutting element during a biopsy procedure. The inner cannula is advanced distally outwardly and to cause the vacuum to be generated in the vacuum chamber. The vacuum is delivered to the cutting element whereby tissue is drawn into the tissue receiving aperture. The outer cannula is advanced distally outwardly after the inner cannula such that tissue drawn into the tissue cutting aperture is severed.
摘要:
A site marker is provided that includes a generally hollow body defining a cavity. At least one marker element is captured within the cavity but is able to move within the cavity. The capturing prevents migration of the marker within a body. The site marker is formed into a predeployment configuration whereby the site marker is compressed into a predetermined size and shape to as to be readily positionable within a deployment device. The site marker expands from the predeployment position to a post deployment configuration upon insertion into the body.
摘要:
An intracorporeal site marker that is adapted to be implanted into a biopsy cavity includes a plurality of balls or particles. The balls or particles are either sintered together or bonded together. Other alternative embodiments of site markers visible under various imaging modes are also disclosed.
摘要:
A site marker delivery system is provided that may be used in combination with a tissue cutting device for marking a biopsy site. The system includes a tube attached to a hub. A push-rod is slidably disposed within the lumen of the tube. The push-rod is advanced forward through the lumen of the tube causing a marker seated within the tube to be deployed at a biopsy site.
摘要:
A site marker delivery system is provided that may be used in combination with a tissue cutting device for marking a biopsy site. The system includes a tube attached to a hub. A push-rod is slidably disposed within the lumen of the tube. The push-rod is advanced forward through the lumen of the tube causing a marker seated within the tube to be deployed at a biopsy site.
摘要:
A site marker is provided that includes a generally hollow body defining a cavity. At least one marker element is captured within the cavity but is able to move within the cavity. The capturing prevents migration of the marker within a body. The site marker is formed into a predeployment configuration whereby the site marker is compressed into a predetermined size and shape to as to be readily positionable within a deployment device. The site marker expands from the predeployment position to a post deployment configuration upon insertion into the body.
摘要:
A target localizing and marking device is provided including a cannula having proximal and distal ends and a lumen therebetween, and a tip member releasably attached to the distal end, where the tip member includes and outer shell and at least one inner chamber. The device further includes at least one image enhancing component disposed on the outer shell and/or within the at least one inner chamber, at least one marking component disposed in the at least one inner chamber, and a tip member deployment mechanism. The deployment mechanism has a manually engageable actuator, a portion of which is dimensioned to slidably pass through the lumen of the cannula, and is operable to separate the tip member from the cannula and deploy the tip member to a predetermined target site. In some implementations, the device is magnetic resonance imaging (MRI) compatible and is identifiable under MRI.
摘要:
A coated medical device adapted for introduction into a passage or vessel of a patient is provided. The medical device is preferably an implantable balloon with a bioactive deposited or within the balloon. The balloon can further include a hydrophilic material positioned between the balloon and a bioactive material posited on the balloon.
摘要:
A medical device (110) including a catheter shaft (111) and a unitarily and continuously formed portion (108) having a varying durometer, and optionally including an expandable balloon (18, 118). One or both of the unitarily and continuously formed portion (108) and the balloon (18, 118) are made from an irradiation cross-linked or cross-linkable mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The aromatic molecule can be 1,3,5 triethyl benzene; 1,2,4 triethyl benzene; and 1,3,5 triisopropyl benzene. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide.
摘要:
A target localizing and marking device is provided including a cannula having proximal and distal ends and a lumen therebetween, and a tip member releasably attached to the distal end, where the tip member includes and outer shell and at least one inner chamber. The device further includes at least one image enhancing component disposed on the outer shell and/or within the at least one inner chamber, at least one marking component disposed in the at least one inner chamber, and a tip member deployment mechanism. The deployment mechanism has a manually engageable actuator, a portion of which is dimensioned to slidably pass through the lumen of the cannula, and is operable to separate the tip member from the cannula and deploy the tip member to a predetermined target site. In some implementations, the device is magnetic resonance imaging (MRI) compatible and is identifiable under MRI.