Abstract: A fluid-control medical mattress includes a platform and multiple supports mounted on the platform. Each support is a bladder for selectively receiving fluid to support a patient. A skirt is mounted to a periphery of the platform and surrounds the platform for retaining water with the platform for a nurse to conveniently clean the body of the patient who lies on the platform. The multiple supports respectively correspond to the head, neck, shoulder, pelvis and knee for supporting the patient who lies on the platform when the multiple supports are full of fluid.

Abstract: A spinal joint fixture includes a first threaded fixture and a second threaded fixture respectively having multiple blind holes, a connection rod a first end of which is securely connected to a first end of the first threaded fixture and a second end of which is securely connected to a first end of the second threaded fixture and at least one universal joint sandwiched between the first end and second end of the connection rod such that the first threaded fixture is movable relative to the second threaded fixture.

Abstract: A bone securing bolt includes a threaded shank, a head formed on an end of the threaded shank, a receiving space defined in the threaded shank, multiple through holes defined in a side face of the threaded shank to communicate with the receiving space, and multiple blind holes defined in the side face of the threaded shank.

Abstract: A fluid-control medical mattress includes a platform and multiple supports mounted on the platform. Each support is a bladder for selectively receiving fluid to support the patient. A skirt is mounted to a periphery of the platform and the surrounding the platform for retaining water with the platform for a nurse to conveniently clean the body of the patient who lies on the platform. The multiple supports respectively correspond to the head, neck, shoulder, pelvis and knee for supporting the patient who lies on the platform when the multiple supports are full of fluid, and the skirt.

Abstract: A supporting device for osteopathy includes a liquid material and a support frame which includes a plurality of support boards or support links connected with each other. The liquid material is attached onto the support frame and solidified so as to form a support frame that has support boards or support links are crossed over each other.

Abstract: A bipolar includes two parts and each part has a heating distal end. A wire is connected to each part and electrically connected to the heating distal end corresponding thereto. A connection member is connected to the two parts and includes two terminals which are respectively connected to the two wires. An adjusting device which can be a sleeve movably mounted to the two parts or a pin which pivotably connects the two heating distal ends. By the adjusting device, the available length of the bipolar can be optionally used.

Abstract: A spinal fixation and retrieval device has a solid main body including a cone-like body at one end thereof and a column-like body connected to a base of the cone-like body. The cone-like body has a length which is less than one third of the length of the main body. The column-like body is provided with at least two threads which are separated from each other by a distance which is at least two times the width of the base of the threads.