The present disclosure provides a catheter grip device that secures to a catheter shaft and provides easier manipulation of the catheter shaft for the user. For example, the catheter shaft, such as for an Electrophysiology catheter, may insert into a patient's blood vessel. From here, the user, such as the physician, may need to manipulate, re-position, rotate, or otherwise maneuver a distal end of the catheter shaft while inserted inside the patient's blood vessel. In this regard, by the catheter grip being securely attached to the catheter shaft, the user is able to manipulate, rotate, etc. the catheter shaft by rotating and manipulating the catheter grip. The catheter grip reduces strain on the various muscles of the user's hand, and also provides more accurate manipulation of the catheter shaft.

In one representative embodiment, a gripping and pushing device for a medical instrument comprises an elongated main body defining a lumen. The elongated main body comprises one or more deflectable portions that can be pressed radially inwardly toward a shaft of the medical instrument extending through the lumen. One or more elastomeric gripping layers can be secured to the inner surface of a respective deflectable portion at axially spaced apart attachment locations. The one or more gripping layers are axially deformable relative to the one or more deflectable portions between the attachment locations when manual pressure is applied to the one or more deflectable portions to press the one or more gripping layers against the shaft and move the shaft longitudinally into a patient's body.

In various embodiments of the invention, a manipulator attaches to and allows a sheath to be positioned inside the cervix and a catheter to thereby be inserted through the sheath and be positioned in a desired location in the uterus. In various embodiments of the invention, the manipulator may be attached or permanently connected to the sheath. In various embodiments of the invention, the sheath is fenestrated to allow the catheter to be detached from the sheath. In various embodiments of the invention, the manipulator allows the sheath to be positioned through the cervix canal to allow for catheter transmitted intrauterine pressure monitoring or balloon catheter assisted ripening of the cervix.

The present invention provides a guidewire adjuster and a delivery-system control handle provided with the guidewire adjuster. The guidewire adjuster includes a support mechanism which has a lumen for a guidewire to extend therethrough; and a driving mechanism for driving the guidewire to move back and forth in the lumen. The guidewire adjuster is able to drive the guidewire to move with respect to a sheath of the delivery system. The support mechanism is connected to the control handle of the delivery system and forms a lumen for accommodating the guidewire. A proximal end of the sheath together with the stent can be driven to move upwardly, due to the relative movement between the guidewire and the sheath of the delivery system. Therefore, the position of the stent can be adjusted by advancing the guidewire forward when the stent has been deployed at a lower position than expected.

Devices and methods of treating fluid retention caused by congestive heart failure or other conditions resulting in edema, lymphoedema, or significant fluid retention (e.g., deep vein thrombosis, cellulitis, venous stasis insufficiency, or damage to the lymphatic network) are described. Specifically, a treatment device is used to create a passage or cannula between the lymphatic system (or other area of the body) and an external drainage device. This device can be only temporarily located in the patient or can be implanted within the patient for longer periods of time. The physician can safely and reliably remove excess fluid from the body via the device and optionally inject other treatment agents.

A clamping device for a shaft of a catheter can include a first member rotatably coupled to a second member. The first member can have an annular element defining a central lumen, the outer surface of the annular element having a non-circular cross-sectional profile, and the second member can define a bore into which the annular element extends, the bore having a non-circular cross-sectional profile. The device can move between a release state wherein the central lumen has a first diameter, and a clamped state wherein the central lumen has a second diameter less than the first diameter. When the clamping device is in the clamped state, the clamping device can engage an outer surface of a catheter shaft and when the clamping device is in the release state, the clamping device can be moved along a length of the catheter shaft.

In one representative embodiment, a gripping and pushing device for a medical instrument comprises an elongated main body defining a lumen. The elongated main body comprises one or more deflectable portions that can be pressed radially inwardly toward a shaft of the medical instrument extending through the lumen. One or more elastomeric gripping layers can be secured to the inner surface of a respective deflectable portion at axially spaced apart attachment locations. The one or more gripping layers are axially deformable relative to the one or more deflectable portions between the attachment locations when manual pressure is applied to the one or more deflectable portions to press the one or more gripping layers against the shaft and move the shaft longitudinally into a patient's body.

A catheter with a distal end that rotates through the conversion of linear motion to rotational motion, thus the distal end may be rotated without longitudinally advancing or retracting the distal end. The catheter includes a tube with a single helix or a dual chirality helix cut into the tube, a distal end segment, means for linear displacement of the helix, and means for coupling the junction point of the helix to the distal segment.

Torque devices for use with intravascular devices and associated systems and methods are disclosed. In some embodiments, a torque device for use with an intravascular device includes a first component having a body defining a tapered opening for receiving a proximal portion of the intravascular device, a first arm extending from the body, and a second arm extending from the body; and a second component movably coupled to the first component, wherein the second component is movable relative to the first component between an open position where the torque device is configured to slidably receive the proximal portion of the flexible elongate member between the first and second arms of the first component and a closed position where the torque device fixedly engages the proximal portion of the flexible elongate member between first and second arms of the first component.

A device comprises a tubular member with a longitudinal axis having a proximal end and a distal end, at least one partial cut located at, along or near the distal end of the tubular member, the at least one partial cut comprising an orientation that is angled relative to both the longitudinal axis and an axis transverse to the longitudinal axis, a pusher member positioned within an interior of the tubular member and configured to selectively advance the distal end of the tubular member longitudinally, wherein the distal end of the tubular member is configured to at least partially rotate when the pusher member is advanced relative to the tubular member so at to facilitate placement of the distal end in a particular branch of a subject's intraluminal network, wherein the distal end of the tubular member is configured to longitudinally elongate along or near an area of the at least one partial cut.