A self-slitting open lumen cannula may be used with catheter adapters to reduce manufacturing complexity and costs, as well as improve the safety of the catheter adapters against fluid leakage. The open lumen cannula may also include one or more notches to facilitate flashback visualization. The catheter adapters may further include a catheter adapter body formed of a compliant material that houses one or more compression resistant septa with at least one lumen formed by the proximal end of the needle during a self-slitting process as the catheter adapter is assembled. The compression resistant septum may also be coupled to a compression cap that imparts a radial compression force on the one or more compression resistant septa such that the at least one lumen narrows and seals when the cannula is removed.

A drainage or infusion catheter and methods of use are disclosed. In one embodiment, the catheter includes a tube body having a proximal end and a distal end, and a plurality of ports arranged along the tube body from the distal end to the proximal end. The distal end of the tube body is configured to deform around itself into a substantially spiral shape so as to cover at least one of the plurality of ports located near the proximal end of the tube body. In another embodiment, a flap is configured to erupt from apertures arranged in the tube and extend outwardly around the tube body so as to cover at least one of the plurality of ports located near the proximal end of the tube body.

Disclosed here are syringe assemblies that include a modified syringe tip to penetrate a subject to obtain or administer a substance. The syringe system consists of a syringe body with or without a modified syringe tip with a standard or modified plunger. The modified syringe tip or modified plunger protrusion can penetrate a subject, such as the skin of a patient or a membrane on sealing a container containing medicine, or a seal of an empty vial.

A medicinal applicator that is defined by a base, a medicinal cream receiving port in the base, and a shaft extending along a shaft axis from the base and terminating at an applicator tip is useful in smearing medicinal cream in a person's colon. There is at least one exit aperture located along a portion of the shaft through which the cream can exit. The medicinal applicator has an unobstructed pathway is in communication with the receiving port and the exit aperture in addition to a stop plate that extends radially from the base delineating the base from the shaft. The shaft's outer shape is defined by an oblong cross section that is uniform along the entire length of the shaft.

Embodiments of the present invention disclose a method of cosmetic or biomedical application of a device, comprising a self-contained syringe device comprising an inner syringe included within an outer syringe and wherein a filter is attached inside the outer syringe barrel; wherein the filter comprises a filter material that prevents premature filter collapse where the filter material is optionally coated to increase stiffness, and wherein liposuctioned adipose tissue is collected and purified inside the syringes.

A drainage or infusion catheter and methods of use are disclosed. In one embodiment, the catheter includes a tube body having a proximal end and a distal end, and a plurality of ports arranged along the tube body from the distal end to the proximal end. The distal end of the tube body is configured to deform around itself into a substantially spiral shape so as to cover at least one of the plurality of ports located near the proximal end of the tube body. In another embodiment, a flap is configured to erupt from apertures arranged in the tube and extend outwardly around the tube body so as to cover at least one of the plurality of ports located near the proximal end of the tube body.

An infusion device (50) incl. a preferably soft cannula (1) configured to be inserted by means of an insertion needle. The cannula has a tubular body member having a proximal end and a subcutaneously placed distal portion having a distal end where the distal portion is provided with an opening (2) allowing a portion of a drug conveyed through the tubular body member to discharge. The cannula further comprise, in the distal portion, a radial opening allowing a portion of a drug conveyed through the tubular body member to discharge.

Disclosed herein are embodiments of spring cannulae, including one or more holes in the sidewall of the cannula. Some disclosed cannulae include a wire, helically wound to form coils, and at least one hole in the cannula that interrupts one or more of the coils. Some embodiments further include a fused region of the coils through which the hole passes. Some embodiments include a ring attached to ends of the interrupted coils, where the hole is surrounded by the ring. Some embodiments include a sheath that is attached to a radial surface of the interrupted coils, where the hole passes radially though the sheath.

A system for serially injecting liquids includes a syringe body, proximal and distal stopper members disposed in the syringe body, a first liquid in a distal chamber, a second liquid in a proximal chamber, a plunger member, and a needle hub assembly coupled to a distal needle interface of the syringe body. The plunger member includes a needle retention feature disposed in a plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. Manipulating the plunger member to insert the proximal stopper member distally relative to the syringe body initially expels the first liquid, then the second liquid. The needle is at least partially retractable into plunger interior.

A device for transferring fluids in a closed system transfer device using flash for last drop extraction and to reduce coring. The device including a piercing member having a distal end and a proximal end and defining a longitudinal fluid channel. A first opening positioned at the distal end of the piercing member wherein the first opening is in fluid communication with the longitudinal fluid channel. A cover or flash positioned over the first opening. The cover including a pre-cut pattern wherein the cover opens along the pre-cut pattern upon application of a distally directed force from the longitudinal fluid channel. The distal end including the first opening having a steep taper to facilitate last drop extraction.