Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

Provided are conformable light delivery devices for increasing light penetration depth and related methods. The device may comprise a microarray of tissue penetrating members, each member having a distal end and a proximal end, wherein the tissue penetrating members are at least partially optically transparent to provide optical transmission through a surface that extends between the distal and proximal ends of each tissue penetrating member and a substrate that supports the tissue penetrating members, wherein the substrate is optionally a flexible substrate.

Provided are conformable light delivery devices for increasing light penetration depth and related methods. The device comprises a tissue penetrating member having a distal end and a proximal end, the tissue penetrating member configured to penetrate the tissue of the patient to be inserted into the tissue, wherein the tissue penetrating member is at least partially optically transparent along a surface of the tissue penetrating member positioned between the distal end of the tissue penetrating member and the proximal end of the tissue penetrating member to provide optical transmission of at least a portion of the light through the surface of the tissue penetrating member, thereby allowing at least the portion of the light to be delivered into the tissue of the patient when the tissue penetrating member is inserted into the tissue; and a substrate that supports the tissue penetrating member.

The present disclosure provides constructs comprising a coding sequence operably linked to a promoter, wherein the coding sequence encodes a connexin 26 protein. Exemplary constructs include AAV constructs. Also provided are methods of using disclosed constructs for the treatment of hearing loss and/or deafness.

Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

A microneedle device for delivering a therapeutic fluid to a fistula comprises a carrier element (5) formed by a pair of shells (9). The shells (9) are of semi-circular cross-section and are urged together by resilient bands (10) to define a main bore (14) extending therethrough. A plurality of microneedles (17) extend from the respective shells (9). An operating member (30) of circular transverse cross-section of external diameter greater than the diameter of the main bore (14) is urgeable into the main bore (14) for urging the shells (9) and in turn the microneedles (17) radially outwardly from a rest state to an engagement state, and into the tissue within the fistula (3). A tubular shield (23) of circular transverse cross-section having a carrier element accommodating bore (25) extending therethrough is provided for accommodating the carrier element (3) with the microneedles (17) in the rest state for facilitating insertion of the carrier element (3) located within the tubular shield (24) into the fistula (3) in order to avoid engagement of the microneedles (17) with the tissue of the fistula (3) during insertion of the carrier element (5). On the carrier element (5) being correctly located in the fistula (3), the tubular shield (24) is withdrawn and the operating member (30) is urged into the main bore (14) of the carrier element (5) for urging the microneedles (17) into engagement with the tissue. Main chambers (40) communicate with the microneedles (17) through communicating ports (45) and corresponding inlet ports (21) when the operating member (30) is aligned in the carrier element (5). A delivery needle is urgeable sequentially into the main chambers (40) for delivering the therapeutic fluid into the main chambers (40) for in turn delivery through the microneedles (17).

Provided are conformable light delivery devices for increasing light penetration depth and related methods. The device may comprise a microarray of tissue penetrating members, each member having a distal end and a proximal end, wherein the tissue penetrating members are at least partially optically transparent to provide optical transmission through a surface that extends between the distal and proximal ends of each tissue penetrating member and a substrate that supports the tissue penetrating members, wherein the substrate is optionally a flexible substrate.

Systems, devices, and methods for maintaining patency in a bronchus of a patient are presented. A catheter is positioned within the bronchus. A target region of one or more of a bronchial wall, submucosa, media, and adventitia is punctured with an injection needle disposed on a distal end of the catheter. Such puncturing is achieved by expanding a balloon disposed on the distal end of the catheter. The balloon may be comprised of at least two materials of different elastic modulus, which allows for a flexible but relatively non-distensible, unfolding component of the balloon as well as an elastomeric, inflatable component of the balloon. Through the injection needle, an amount of one or more crosslinking agents is delivered to the target region. The delivered amount is effective to provide structural support for the bronchial wall, substituting for the bronchial cartilage thereby treating bronchomalacia.

Provided are conformable light delivery devices for increasing light penetration depth and related methods. The device comprises a tissue penetrating member having a distal end and a proximal end, the tissue penetrating member configured to penetrate the tissue of the patient to be inserted into the tissue, wherein the tissue penetrating member is at least partially optically transparent along a surface of the tissue penetrating member positioned between the distal end of the tissue penetrating member and the proximal end of the tissue penetrating member to provide optical transmission of at least a portion of the light through the surface of the tissue penetrating member, thereby allowing at least the portion of the light to be delivered into the tissue of the patient when the tissue penetrating member is inserted into the tissue; and a substrate that supports the tissue penetrating member.

Methods and kits for delivering pharmaceutical agents to an adventitia and other regions outside an external elastic lamina (EEL) surrounding a blood vessel utilize a catheter having a needle. The needle is positioned in up to 5 mm beyond the EEL and delivers an amount of a pharmaceutical agent sufficient to circumferentially permeate around the blood vessel and, in many cases, extend longitudinally and radially along the blood vessel. Confirmation that a delivery aperture of the needle lies beyond the EEL may be required before delivering the pharmaceutical agent. In one example, catheters are used to deliver dexamethasone and other anti-inflammatory agents to a peripheral vasculature and other vasculature to treat peripheral vascular disease and other conditions.