5 results about "Tissue compression" patented technology

A method of operating a surgical instrument is disclosed. The surgical instrument includes an electronic system comprising an electric motor coupled to the end effector; a motor controller coupled to the motor; a parameter threshold detection module configured to monitor multiple parameter thresholds; a sensing module configured to sense tissue compression; a processor coupled to the parameter threshold detection module and the motor controller; and a memory coupled to the processor. The memory stores executable instructions that when executed by the processor cause the processor to monitor multiple levels of action thresholds and monitor speed of the motor and increment a drive unit of the motor, sense tissue compression, and provide rate and control feedback to the user of the surgical instrument.

This invention discloses an intelligent puncture path planning method for interventional surgical robots, belonging to the field of interventional robot path planning technology. The method acquires multimodal medical images of the patient's puncture site, completes organ tissue segmentation and three-dimensional reconstruction, generates a digital twin anatomical model, and calibrates basic puncture parameters; constructs a respiratory phase tracking model, combines the basic puncture parameters to lock the respiratory cycle and real-time respiratory phase, and outputs the three-dimensional predicted coordinates of the puncture target point for a pre-set duration; acquires needle insertion force data through a six-dimensional force sensor, calculates tissue compression deformation and needle body flexible bending offset in real time, and generates a feedforward compensation vector; fuses the three-dimensional predicted coordinates and the feedforward compensation vector to generate a dynamic puncture path, performing continuous needle insertion without interruption throughout the entire process. This invention improves upon the shortcomings of traditional static path planning, which cannot adapt to respiratory displacement and tissue deformation, effectively improving puncture positioning accuracy and is suitable for minimally invasive interventional puncture surgery scenarios.

The application relates to a self-adaptive mid-urethral suspension system based on a variable stiffness structure, and belongs to the technical field of medical devices. The suspension system comprises a sling body, the sling body is divided into a support area, an anchoring area and a transition area, and a silica gel pad is fixedly arranged on the support area; the initial stiffness of the support area is 0.1-0.8 N / mm, the load stiffness is 0.2-12.0 N / mm, the initial stiffness of the anchoring area is 0.05-0.4 N / mm, the load stiffness is 0.5-2.5 N / mm, the initial stiffness of the transition area is 0.08-0.5 N / mm, and the load stiffness is 1.0-5.0 N / mm. Through the design, the sling body is soft in a resting state to reduce tissue compression, and the stiffness is dynamically increased when abdominal pressure is increased to provide effective support, and the sling body can be self-adaptively adjusted. The application also provides a customization system, which comprises a data acquisition module, a mechanical modeling module, a data output module and a weaving module, and is used for generating a matched sling according to the pelvic floor biomechanics data of a patient.

This invention discloses a fully lubricated and decompression-reducing medical surgical suture needle, belonging to the field of medical device technology. Existing smooth suture needles easily create a closed negative pressure when penetrating tissue, resulting in high needle insertion resistance and potential tissue compression damage. Traditional locally grooved suture needles cannot achieve full-length drainage, are not designed according to standard needle diameter classifications, and coated lubricated suture needles suffer from performance degradation and failure after repeated sterilization. This invention features a through-type V-shaped groove on the main force-bearing surface of the needle body, configured with four cross-sectional structures, matching the groove depth and layout angle according to the standard nominal diameter of the medical suture needle, and avoiding the needle tip puncture section and the needle tail threading section. During puncture, a small amount of tissue fluid on the surface can be drained to form a dynamic lubrication layer, breaking the puncture negative pressure and achieving fully lubricated and decompression puncture. All parameters of this invention comply with the YY / T 0166-2022 industry standard, exhibiting high structural strength, sterilization resistance, and ease of mass production. It is suitable for clinical use in multiple departments, effectively reducing intraoperative tissue damage and improving surgical suturing quality.

A surgical stapler includes an anvil assembly, a reloading assembly, an adapter assembly, a processor, and a memory. When clamped to a target pressure, the surgical stapler is instructed to advance the anvil assembly to a first position relative to a staple cartridge supported on the reloading assembly, defining a first tissue gap within a predetermined acceptable tissue gap range; a first tissue compressive force is measured on the tissue clamped within the first tissue gap when the anvil assembly is in the first position; and if the first tissue compressive force is within the predetermined acceptable tissue compressive range, the surgical stapler is engaged in a firing mode.