Abstract: A foldable panel combination for a modular greenhouse is described. The combination includes a first side panel hingedly connected with a first roof panel at a first hinge, a second side panel hingedly connected with a second roof panel at a second hinge, and a third hinge that hingedly connects the first roof panel to the second roof panel. The combination also includes a truss brace. In the collapsed state, the first side panel, second side panel, first roof panel, and second roof panel are stacked and the truss brace is detached. In an assembled state, the first side panel, second side panel, first roof panel, second roof panel are unfolded and truss brace is attached to the first and second roof panels to form an upright stable structure. The combination can also include a roof dormer having four hingedly connected triangular sections transitionable to a stacked collapsed state.

Abstract: A foldable panel combination for a modular greenhouse is described. The combination includes a first side panel, a second side panel, a first roof panel, and a second roof panel that are hingedly connected. The combination is transitionable between a collapsed state and an open state. In the collapsed state, the four panels are in a stacked configuration. In the open state, the panels form a sidewall-to-roof-to-roof-to-sidewall structure that can be connected with other panel combinations for linear expansion. Each panel comprises a rectangular frame and a cover for enclosing art open space in the middle of the frame.

Abstract: A foldable panel combination for a modular greenhouse is described. The combination includes a first side panel, a second side panel, a first roof panel, and a second roof panel that are hingedly connected. The combination is transitionable between a collapsed state and an open state. In the collapsed state, the four panels are in a stacked configuration. In the open state, the panels form a sidewall-to-roof-to-roof-to-sidewall structure that can be connected with other panel combinations for linear expansion. Each panel comprises a rectangular frame and a cover for enclosing art open space in the middle of the frame.

Abstract: A retractable needle fluid transfer device is provided. The device includes a manually operable actuator for affecting retraction. Upon depressing the actuator, a spring displaces the needle rearwardly so that the contaminated needle is enclosed, thereby preventing inadvertent needle sticks. The device includes forward and rearward stops for impeding displacement of the needle after the needle is retracted. A seal prevents contaminants from entering the device after the needle is retracted. A safety sampling access port adapter for obtaining fluid samples from a fluid line is also provided. The sampling adapter includes a first end configured to cooperate with an access port attached to the fluid line. The sampling adapter further includes a collapsible socket configured to cooperate with a fluid container such as a vacuum tube. A needle assembly disposed within the housing of the sampling adapter is operable to pierce the seal on the fluid container.

Abstract: A catheter insertion device is provided that includes an insertion needle that is retractable into the device after use to prevent exposure to the contaminated needle. The needle retainer releasably retains the needle in an extended position against the bias of the biasing element. When the catheter is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled rearwardly into the device. A device for inserting a guide wire into a patient is also provided. The device includes an insertion needle that is retractable into the housing of the device after use. A needle retainer releasably retains the needle in an extended position against the bias of the biasing element. After the guide wire is inserted into the patient, the needle retainer allows the needle to be released, so that the needle is retracted into the device.

Abstract: Needle-bearing medical devices are provided for fluid infusion, fluid transfusion, and inserting a guide wire. After use the needle is shielded to render the contaminated needle safe to prevent inadvertent needle sticks. The device includes a housing and a needle having a sharpened tip. A biasing element biases the needle toward a position in which the sharpened tip is shielded.

Abstract: A catheter insertion device is provided that includes an insertion needle that is retractable into the device after use to prevent exposure to the contaminated needle. The needle retainer releasably retains the needle in an extended position against the bias of the biasing element. When the catheter is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled rearwardly into the device. A device for inserting a guide wire into a patient is also provided. The device includes an insertion needle that is retractable into the housing of the device after use. A needle retainer releasably retains the needle in an extended position against the bias of the biasing element. The needle retainer engages the guide wire so that when the guide wire is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled into the device.