The present disclosure relates generally to the field of medical devices and establishing fluid communication between body lumens. In particular, the present disclosure relates to devices and methods for placing the muscularis layers of first and second body lumens in contact to establish a long term or permanent open flow or access passage therebetween.

Some embodiments of a medical device anchor system include an anchor device that secures a medical instrument (such as a catheter or the like) in place relative to a skin penetration point using subcutaneous anchors.

Fixation devices are disclosed herein that can be used to secure to a catheter. The fixation devices include a body having a central bore extending therethrough to receive a catheter and at least one end having a tapered profile tapering inwardly a distal edge thereof. The body can include an expanded intermediate portion, such as one or more bulbous portions. The fixation devices can also include suture openings or grooves to secure the devices to tissue.

Some embodiments of a medical device anchor system include an anchor device that receives a catheter (or other medical instrument) and secures the catheter in place relative to a skin penetration point. In some embodiments, the anchor device can secure the catheter in an operative position relative to the skin without the use of sutures or skin tapes. In particular embodiments, the anchor device can be adjusted to a folded condition so that subcutaneous anchors are partially rotated prior to removal from the skin penetration point.

An apparatus includes a body, a needle, a catheter, and an actuator assembly. The needle extends distally from the body. The needle has an inner wall defining a needle lumen. The needle lumen is in fluid communication with a fluid port of the body. The catheter is slidably disposed in the needle lumen. The catheter has a catheter lumen. The first actuator assembly is configured to translate the catheter within and relative to the needle. The apparatus may also include an actuator assembly that is configured to rotate the needle relative to the body. The apparatus may be used to first deliver a leading bleb of fluid to the subretinal space in a patient's eye via the needle. The apparatus may then be used to deliver a therapeutic agent to the subretinal space in the patient's eye via the catheter.

An apparatus for fastening around a cranial burr hole includes a substantially flat core and a shell encapsulating a ring portion of the core. The shell defines an orifice substantially centered within the ring portion, and has a contoured lower surface to match the cranial curvature. Pliable arms of the core extend laterally from the ring portion, each being terminated by a fastener member. A central portion of a placement tool for the apparatus has a lower part configured to extend through the apparatus orifice, and an upper part from which first and second arms of the tool extend laterally. Each tool arm is terminated with a receptacle to hold a bone screw, and, when the tool central portion lower part extends through the apparatus orifice, each receptacle aligns with a corresponding fastener member, and lower openings of the receptacles are generally oriented along the contoured lower surface.

A catheter securement device includes a body having a generally curved channel configured to receive a central venous catheter and reposition it in a different direction than the direction of the catheter as it exits the skin of the patient. The securement device includes a cover that slidably connects to the securement device body to prevent the catheter from being pulled out of the curved channel.

An occlusion catheter system includes an inflation catheter member and an occlusion balloon. The proximal and distal balloon ends are connected to the inflation catheter between the proximal and distal catheter ends. A distal pressure sensor is attached to the inflation catheter member between the proximal balloon end and the atraumatic tip. An inflatable spine is connected to the inflation catheter. The proximal spine end is connected to the inflation catheter near the proximal balloon end and the distal spine end is connected to the inflation catheter near the distal balloon end. The occlusion balloon and the inflatable spine are configured to define blood flow channels with the internal surface and the external balloon surface when the occlusion catheter system is at least partially positioned in the vessel and the occlusion balloon and the inflatable spine are in a partially inflated configuration.

Some embodiments of a medical device anchor system include an anchor device that receives a catheter (or other medical instrument) and secures the catheter in place relative to a skin penetration point. In some embodiments, the anchor device can secure the catheter in an operative position relative to the skin without the use of sutures or skin tapes. In particular embodiments, the anchor device can be adjusted to a folded condition so that subcutaneous anchors are partially rotated prior to removal from the skin penetration point.

A holding mechanism assembly 1 includes: a tubular inserting member 2; a fixing device 3 having a fixing portion 31 and a communicating portion 32; and a holding structure 4 to hold the inserting member 2 to the fixing device 3 in a liquid tight manner. The communicating portion 32 has a first opening 321 opened toward the outside of the living body; a second opening 322 opened toward the inside of the living body; and a communication path 323 formed between the first opening 321 and the second opening 322. An outer surface 2a of the inserting member 2 has a covered region A1 covered with fiber that can guide cells and a non-covered region A2 not covered with fiber, and the non-covered region A2 extends between the holding structure 4 and the second opening 322.