摘要:
Provided is a treatment device including a long, thin inserted portion having a channel that penetrates in the longitudinal direction; a forceps portion that has a pair of holding pieces that can be opened and closed at the distal end of the inserted portion; and a piercing needle that is accommodated in the channel and that is provided with a through-hole into which a guide wire can be inserted, extends in the longitudinal direction to a needle-tip face, wherein the first holding piece can be disposed at a position shifted toward the proximal end from the distal end of the second holding piece, and the piercing needle can be made to stick out from the opening at the distal-end surface of the inserted portion into a space formed between the distal ends of the pair of holding pieces, which are disposed shifted from each other.
摘要:
Use of constructs which bind to one or more natriuretic peptide receptors and include a plurality of amino acid residues and at least one amino acid surrogate of formula I: where R, R′, Q, Y, W, Z, J, x and n are as defined in the specification, and optionally at least one prosthetic group, for the prophylaxis or treatment of airway diseases, including but not limited to inflammation-related airway diseases, acute asthma or COPD, methods of prophylaxis and treatment of airway diseases and pharmaceutical compositions and formulations for the prophylaxis or treatment of airway diseases.
摘要:
Stabilization systems and methods for various procedures (e.g., tissue ablation procedures) are disclosed. An exemplary stabilization system for use in a medical procedure may include a housing structure having a base portion, the housing structure insertable into a patient's body. The system may also include a securement element on the base portion of the housing structure. The system may also include a deployment mechanism in the housing structure and operably associated with the base portion. The deployment mechanism is operable to extend the base portion so that the at least one securement element engages a tissue in the patient's body after the housing structure is positioned adjacent a target area inside a patient's body. Embodiments of the securement element may include a membrane, a chamber, a frictional surface, at least one needle, peg, gasket, adhesive, and/or a collar.
摘要:
Systems and methods for delivering drugs or other substances to target locations outside of blood vessel lumens or other body lumens. In some embodiments, a catheter having a penetrator is advanced into the body lumen and the penetrator is then advanced from the catheter toward a target location outside of that body lumen. The substance is then delivered through a the penetrator itself or through a delivery catheter that has been advanced through the penetrator to the target location. In other embodiments, the blood vessel or other body lumen is blocked at spaced-apart first and second locations and a quantity of the substance is introduced into the closed-off body lumen between the blocked first and second locations. The substance then diffuses into or through the wall of the vessel or body conduit to reach the target location.
摘要:
A medical practitioner can specify certain parameters for a procedure that involves delivering a therapeutic agent, while leaving other parameters open. The therapeutic agent can be sensitive to biomechanical forces (or other influences) associated with delivery. The procedure can involve regenerative medicine, for example delivering progenitor or stem cells to a diseased heart using a catheter, whereby unbridled transport in the catheter may compromise efficacy. The open parameters can influence efficacy of the agent and thus therapeutic outcome. A computer-based system can apply stored information, such as from databases, to narrow the possible values of the open parameters. From the narrowed possibilities, an optimization routine can determine suitable or optimized values for the open parameters. The determined values can manage biomechanical forces incurred by the therapeutic agent, thereby promoting efficacy and healing. The optimized parameters can guide the practitioner in the procedure.
摘要:
A tissue cutting device is disclosed, which is structured and arranged to be inserted through the vascular system into a body vessel adjacent to the heart and/or into the heart, and to be subsequently subjected to a change of shape in order to penetrate into the heart tissue. The tissue cutting device may thus be used for treating disorders to the heart rhythm regulation system. A kit of devices provides a plurality of devices for creating a lesion pattern for treating such disorders.
摘要:
Devices, systems, and methods for epicardial navigation. In at least one exemplary embodiment of a system for navigating an elongated body on a surface of a tissue of the present disclosure, the system comprises (a) an internal elongated body comprising a distal end and a first element positioned at or near the distal end of the internal elongated body, the internal elongated body devoid of an ablation contact, and (b) an external elongated body comprising a distal end and a second element and an ablation contact positioned at or near the distal end of the external elongated body, the ablation contact being configured to remove or destroy tissue, wherein when a portion of the external elongated body is positioned on or adjacent to a first surface of a tissue and when a portion of the internal elongated body is positioned on or adjacent to an opposing surface of the tissue, manipulation of the internal elongated body directs movement of the external elongated body to a first location to facilitate removal or destruction of tissue at the first surface at a first location.
摘要:
Methods and devices for placing a target vessel in fluid communication with a source of blood and a target vessel. A conduit includes first portion adapted to be placed in fluid communication with a source of blood, such as a heart chamber, and a second portion adapted to be placed in fluid communication with a target vessel having a lumen, such as coronary artery. The first and second conduit portions are transverse to each other such that the conduit is generally T-shaped. The conduit lies on an exterior of the heart between the blood source and the target vessel and is configured to deliver blood in multiple directions into the lumen of the target vessel. For example, in an occluded coronary artery, blood flows both toward and away from the occlusion. The conduit may be flexible, rigid, collapsible or non-collapsible, and may be formed of synthetic vascular graft material, tissue, or a combination of the two. A conduit delivery device is disclosed for deploying the conduit in a target vessel and perfusing the vessel during such deployment.
摘要:
A method includes obtaining a first three-dimensional (3-D) image of a bone structure, generating a surgical plan based on the first 3-D image and registering the surgical plan to the bone structure to generate a registered surgical plan by obtaining a first 2-D real-time video image of the bone structure and a second 3-D image of the bone structure, and correlating structures from the first 2-D real-time video image and the second 3-D image with the surgical plan. The method also includes obtaining a second 2-D real-time image of the bone structure and overlaying the registered surgical plan onto the second 2-D real-time video image.