摘要:
A repositionable closure device for occluding a body opening is provided. The closure device includes distal and proximal occluding bodies having expandable distal and proximal umbrella frames. Each umbrella frame includes a plurality of struts connected to a biocompatible sheet material. The distal and proximal umbrella frames expand to expanded configurations on opposite sides of the body opening. The struts of the distal umbrella frame terminate with an eyelet. The distal occluding body is connected to a distal end of a center rod and the proximal umbrella frame is slidable along the center rod via a center ring. At least one drawstring is threaded through the eyelets and the center ring, connecting the distal and proximal occluding bodies. The drawstring extends proximally from the center ring. Manipulation of the drawstring and the center rod is configured to collapse the closure device for at least partial retrieval during repositioning.
摘要:
Certain aspects of the present invention provide devices for occluding vascular vessels. In some preferred forms, these devices are able to move from a first condition to a less compact, second condition in a vascular vessel so as to fully or partially prevent fluid from passing through the vessel. One such device includes a frame and a flexible sheet material. The device also includes an occluding material that is located in an interior region of the frame. The flexible sheet material and frame are associated with one another such that when the device is in the second condition in the vascular vessel, the sheet material is positioned in the vessel lumen so as to block fluid flow through the lumen.
摘要:
A spring action medical device includes a spring that may propel a hammer component in a distal direction when the spring is released from a loaded state. When propelled forward by the spring, the hammer component makes contact with a distal tip of the medical device. The distal tip may then transfer a force to an external object, such as an occlusion in a body lumen.
摘要:
An integrally formed angioplasty cutting device for balloon angioplasty of a stenotic lesion in a body vessel. The device comprises a distal collar and a proximal collar. The device further comprises at least one strut integrally formed with the distal collar and the proximal collar. At least one of the collars has a slot formed therethrough defining a C-shaped configuration. The strut is configured to be disposed at the stenotic lesion to engage the stenotic lesion for dilatation of the body vessel during angioplasty.
摘要:
The invention relates to minimally invasive device for delivering therapeutic or diagnostic agents into a vessel wall. The device includes an introducer tube, a tubular member having a proximal end, a distal end, and a first lumen extending therebetween, the tubular member being slidably disposed within the introducer tube; a plurality of hollow delivery struts, each delivery strut adapted to pierce through inner most layers of the vessel wall and each comprising at least one exit port and at least one stopper to prevent the delivery strut from piercing through the outer most layers of the vessel wall. The delivery struts are disposed on the distal end of the tubular member and are in fluid communication with the first lumen. The invention also relates to methods of delivering the device of this invention and methods of treating conditions or diseases of body lumens.
摘要:
The invention relates to minimally invasive device for delivering therapeutic or diagnostic agents into a vessel wall. The device includes an introducer tube, a tubular member having a proximal end, a distal end, and a first lumen extending therebetween, the tubular member being slidably disposed within the introducer tube; a plurality of hollow delivery struts, each delivery strut adapted to pierce through inner most layers of the vessel wall and each comprising at least one exit port and at least one stopper to prevent the delivery strut from piercing through the outer most layers of the vessel wall. The delivery struts are disposed on the distal end of the tubular member and are in fluid communication with the first lumen. The invention also relates to methods of delivering the device of this invention and methods of treating conditions or diseases of body lumens.
摘要:
A spring action medical device includes a spring that may propel a hammer component in a distal direction when the spring is released from a loaded state. When propelled forward by the spring, the hammer component makes contact with a distal tip of the medical device. The distal tip may then transfer a force to an external object, such as an occlusion in a body lumen.
摘要:
An occluding device for occlusion within a body vessel is disclosed. The device comprises an expandable frame having an occluding portion disposed within a closure area of the frame. An anchoring component is attached to the frame to engage the body vessel. A coupling is attached to the frame for repositioning the device.
摘要:
An endoluminal prosthesis that includes a support structure comprising a curvilinear portion having a first strut and a second strut that meet at an apex. Disposed on the support structure is an anchor with an anchor body and one or more barbs extending outwardly from the anchor body and where the anchor body fits at least partially about, and conforms to the first strut, second strut, and the apex.
摘要:
A method for closing a body opening in a patient is disclosed. The method comprises positioning a delivery catheter within the body opening. The delivery catheter includes a closure device comprising a distal occluding body and a proximal occluding body. The closure device is collapsibly disposed within a distal end of the delivery catheter. The method further includes deploying the closure device from the delivery catheter about the body opening such that a distal frame of the distal occluding body expands to its expanded configuration at a distal end of the body opening and a proximal frame of the proximal occluding body expands to its expanded configuration at an opposing proximal end of the body opening.