4 results about "Soft tissue sample" patented technology

The invention discloses a biological soft tissue crack quantitative detection method based on elastic wave dispersion characteristics, and the implementation process comprises the following steps: firstly, preparing a soft tissue sample, and applying initial stress to obtain a soft tissue sample strain geometric model and a material stress initial value; then applying low-frequency vibration to the surface of the soft tissue sample, tracking and positioning the vibration, establishing a constitutive relation model of the soft tissue and an increment form, and establishing an inversion model, thereby inverting detailed information such as crack length, angle, fracture mechanical parameters and the like from wave velocity change, and on the basis, determining the fracture velocity of the soft tissue sample. Finite element simulation software is used for conducting crack area local wave field simulation and wave scattering and fracture mechanical simulation on the platform, the accuracy and stability of an inversion result are verified, then after data marked correctly and wrongly are obtained, a reinforcement learning model is input to optimize the inversion result, and finally a crack form data set is obtained; and estimating whether the risk that the crack continues to expand exists or not.

The invention belongs to the technical field of tension testing equipment, and particularly relates to an adjustable soft tissue clamp for a tension testing machine. The device comprises an oil cylinder, wherein a clamping assembly is mounted below the oil cylinder; an inner groove is formed in the top of the oil cylinder, an oil inlet pipe and a first oil return pipe are connected to the inner groove, and a piston capable of sliding is connected into the oil cylinder in a sealed mode and used for driving the clamping assembly to move to clamp or loosen the biological soft tissue. An adjusting mechanism is installed on the surface of the oil cylinder and used for adjusting the clamping force of the clamping assembly. The adjusting mechanism comprises an oil pipe, a connecting pipe is arranged on the oil pipe, and the connecting pipe is communicated with the inner groove; an oil outlet is formed in the oil pipe, and a second oil return pipe is fixedly connected to the oil outlet; the clamping force of the clamping assembly can be adjusted through the adjusting mechanism, and accurate quantitative control and stable keeping of the clamping force can be achieved; therefore, the soft tissue sample can be effectively protected, and the situation that the sample is damaged in advance due to improper clamping force is avoided.

The spine soft tissue fixing clamp for the water jet scalpel operation equipment animal test comprises a clamping assembly and an air exhaust assembly, the clamping assembly comprises two adsorption heads, a plurality of adsorption holes are formed in the inner sides of the adsorption heads, adjusting plates are rotationally connected into the adsorption heads, and the adjusting plates are connected with the air exhaust assembly. Adjusting holes in one-to-one correspondence with the adsorption holes in the adsorption head are formed in the adjusting plate, and the adjusting plate is rotationally connected into the adsorption head through an adjusting shaft. The utility model has the advantages that when an animal test is carried out, the driving shaft is rotated according to the length of a soft tissue sample, and the mounting plate is driven by the driving shaft to horizontally move under the constraint of the mounting frame, so that the position of the adsorption head can be adjusted. According to the type of the soft tissue sample, the adjusting shaft is rotated, the adjusting shaft drives the adjusting plate to rotate, and the adsorption holes in the adjusting plate and the adsorption holes in the adsorption head are mutually staggered, so that the actual hole diameter can be adjusted, different types of animal soft tissues can be clamped and fixed, and the applicability is greatly improved.

The application discloses a kind of soft tissue grinders, belong to the technical field of tissue extraction.The grinder is based on conventional tissue container, container cover and grinding mechanism, additional cooling device and liquid nitrogen pipeline cooling piece arranged around grinding groove, both are detachably connected by connecting piece with quick connector;Tissue container and container cover are sealed and connected using stepped thread, and the grinding mechanism is a grinding hammer with anti-slip raised handle, and the device also configures counterweight base to improve stability.Cooling device is a liquid nitrogen circulating device, including liquid nitrogen tank, circulating pump, solenoid valve and controller with built-in AI module, which can intelligently monitor and control liquid nitrogen flow, and the liquid nitrogen tank is equipped with a liquid injection pipe and an electronic scale to realize liquid nitrogen replenishment and remaining amount monitoring.The application realizes low-temperature environment in the grinding groove through liquid nitrogen circulation, making soft tissue harden and easy to grind, and preventing sample degradation throughout the low-temperature process.The device is convenient to disassemble and assemble, easy to operate, and efficient in grinding, suitable for soft tissue sample pretreatment in the field of biomedicine.