37 results about "Tissue compression" patented technology

The invention relates to a collagen-based artificial cornea with a double-layer structure and capable of rapidly epithelizing and a preparation method thereof, and the preparation method comprises the following steps: adding collagen into an acetic acid solution, stirring and dissolving, and adding a plasticizer to obtain a high-concentration collagen solution and a low-concentration collagen solution; carrying out electrochemical deposition on the high-concentration collagen solution to obtain a collagen membrane I; carrying out photo-crosslinking on the collagen membrane I through strong ultraviolet irradiation; performing chemical crosslinking on the first collagen membrane to obtain a compact layer; a low-concentration collagen solution is taken and poured into the deposition tank, the compact layer is immersed, secondary electrochemical deposition is carried out, and a second collagen film is obtained on the compact layer; the second collagen membrane is subjected to secondary photo-crosslinking through weak ultraviolet irradiation, a loose layer is obtained, and the loose layer and the compact layer are combined to form the collagen-based artificial cornea which is of the double-layer structure and can be rapidly epithelized. The collagen-based artificial cornea with the double-layer structure and capable of being epithelialized rapidly has high light transmittance and meets clinical mechanical properties, the light transmittance at 600 nm is higher than 90%, the tensile strength of the collagen-based artificial cornea is higher than 1 MPa, and the elastic modulus of the collagen-based artificial cornea is higher than 10 MPa. The swelling rate is low, the tissue compression of the product on the autologous cornea can be avoided, the mechanical stimulation on the eye tissue is reduced, and the comfort after implantation is improved.

The invention provides a multi-degree-of-freedom double-arm skin flap retraction robot which comprises a multi-source sensing system, driving systems, a supporting frame and at least two skin flap supporting arms, the driving systems are installed on the supporting frame, each skin flap supporting arm is connected with one driving system, and the driving systems are installed on the supporting frame. The driving system drives the skin flap supporting arm to advance, retreat, lift and pitch, and the multi-source sensing system comprises a spatial position and posture sensing unit and a force touch sensing unit. Each skin flap supporting arm is provided with a spatial position and posture sensing unit and a force touch sensing unit which can monitor the configuration change and the stress state of the skin flap supporting arm in real time. The skin flap retractor has the advantages that dynamic supporting and retraction of skin flap tissue can be achieved, it is guaranteed that the surgical field is fully exposed, meanwhile, single-point tissue compression and trauma risks caused by a traditional retractor are reduced, manpower resources are saved, operation safety is guaranteed, and retraction efficiency and stability are improved.

The utility model relates to a catheter with a variable pipe diameter, and belongs to the technical field of medical instruments. Comprising a catheter body internally provided with a urinary catheterization channel. The first sleeve is coaxially connected to the outer part of the catheter main body in a sleeving manner; the elastic anchoring sleeve is coaxially connected to the exterior of the first sleeve in a sleeving mode, and a second annular channel is defined by the elastic anchoring sleeve and the outer wall of the first sleeve; and the pressure release structure is communicated with the second annular channel and is configured to be in an open state or a closed state based on the fluid pressure in the second annular channel. The elastic anchoring sleeve can reliably prevent excessive radial pressure applied to urethral mucosa due to excessive expansion of the elastic anchoring sleeve, so that serious complications such as ischemia, edema, pressure necrosis and even long-term urethrostenosis caused by long-term compression of local tissues are effectively avoided.

A cardiac device comprises a first anchoring element configured to be attached to a first side of a tissue wall, a second anchoring element configured to be attached to a second side of the tissue wall, and a cinching device. The cinching device is configured to attach to the first anchoring element and the second anchoring element and apply force to the first anchoring element to move the first anchoring element towards the second anchoring element and at least partially compress the tissue wall.

In accordance with an aspect of the present disclosure, a tissue imaging system includes a cassette configured to retain a tissue for imaging. The cassette includes a first cassette portion and a second cassette portion. The first cassette portion includes a recess formed in a central portion thereof, a window formed within the recess, and a first connection mechanism affixed thereto. The second cassette portion includes a cavity configured to compress a tissue therein and a second connection mechanism affixed thereto. An imaging device is configured to image the tissue through the window. Aligning the first connection mechanism and the second connection mechanism causes the first cassette portion to couple to the second cassette portion, compressing the tissue into the cavity for imaging.

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.

A circular stapler for cutting and applying one or more surgical staples to tissue is disclosed. The circular stapler includes various forms of detection systems that are configured to provide feedback to the surgeon that proper tissue compression has been achieved between an anvil of the circular stapler and a stapling head of the circular stapler before firing of the circular stapler. A surgical system includes a console and a controller communicatively coupled to the circular stapler which aids in processing and displaying data to provide feedback to the surgeon that proper tissue compression has been achieved between the anvil and the stapling head before firing of the circular stapler.

The invention belongs to the technical field of medical apparatuses and instruments, particularly relates to a medical external bone supporting mechanism skeleton for assisting a doctor in a clinical operation, and aims to solve the problem of comfort caused by lower limb fatigue of a surgical knife doctor in a long-time operation. The invention discloses a medical exoskeleton supporting mechanism for assisting a doctor in a clinical operation. The medical exoskeleton supporting mechanism comprises a chest base plate, a waist base plate, a waist-leg left connector, a waist-leg right connector, a thigh left base plate, a thigh right base plate, a left limiting pin, a right limiting pin, a shank left base plate, a shank right base plate, a foot left base plate and a foot right base plate. Through a bionic structure and mechanical optimization, a whole-body dynamic supporting and adjusting function from the chest to the feet is provided, it is ensured that doctors of different heights and body types can maintain comfortable and stable postures in the operation period, muscle fatigue and local tissue compression are relieved, the operation comfort and efficiency of the doctors are remarkably improved, and the operation efficiency of the doctors is improved. And the health rights and interests of medical staff are guaranteed.

A surgical stapling instrument includes an anvil assembly, a reload assembly, an adapter assembly, a processor, and a memory. When clamping to a target pressure, the instructions cause the surgical stapling instrument to advance the anvil assembly in relation to a staple cartridge supported on the reload assembly to a first position to define a first tissue gap within a predetermined acceptable range of tissue gaps, measure a first force of tissue compression of tissue clamped within the first tissue gap with the anvil assembly in the first position, and enter a firing mode of the surgical stapling instrument if the first force of tissue compression is within a predetermined acceptable range of tissue compression.

A surgical device includes a reloader assembly having a plurality of staples and a storage device that stores data including a minimum gripping force limit. The surgical device also includes an anvil assembly movable relative to the reloader assembly, a power source, and a motor coupled to the power source. The surgical device further includes a transmission assembly movable under the action of the motor and configured to move the anvil assembly relative to the reloader assembly. The surgical device also includes a force sensor configured to measure a force exerted by the transmission assembly on the anvil assembly. The surgical device also includes a controller configured to activate the motor to move the anvil assembly relative to the reload assembly; comparing the measured force with a minimum clamping force limit; and outputting an alert in response to the measured force being below the minimum gripping force limit.

A compression gauge cartridge for use mounted in a cartridge jaw member of a surgical compression gauge instrument to compress tissue to a predetermined thickness and measure reactionary load therefrom comprises: a cartridge body configured to be releasably mounted in the cartridge jaw member; a force gauge assembly comprising a force transducer and a compression head supported by the cartridge jaw member. The compression head is configured and disposed to be able to transfer the reactionary load from tissue to the force transducer, and a spacer member disposed between the two jaw members comprising the end effector of the surgical compression gauge instrument.

A lead removal device includes a flexible elongate member configured to be positioned within a blood vessel of a patient, and a cutting tip positioned at the distal portion of the flexible elongate member and configured to rotate. The cutting tip includes: a blade configured to cut tissue associated with the blood vessel for removal of an electrical lead implanted in the tissue from a body of a patient, an outer wall surface defining an outer diameter, and an inner wall surface defining a lumen with an inner diameter, wherein the lumen is configured to receive the electrical lead and the tissue cut by the blade. The cutting tip has an outward chamfer such that a cutting edge of the blade is aligned with the inner wall surface, and the inner diameter matches the diameter of the tissue cut by the blade and entering the lumen.

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.

A compression device having an elongated compressive element which can be looped into and adjusted to different desirable sizes around target tissue. The compressive element may be a simple suture string or the like having a distal portion looped around the target tissue and extending to a proximal end positioned outside the patient's body and graspable and manipulable by a medical professional to adjust the looped distal portion. A cinch device may be preloaded on and delivered with the compressive element to target tissue. The cinch device may be coupled with the compressive element in a manner which may facilitate maintenance of the looped configuration of the distal portion of the compressive element and / or to hold the distal portion of the compressive element in a final looped configuration applying the desired compressive force to the target tissue surrounded by the compressive element.

The utility model relates to an expansion disinfection rod, which is characterized in that through the arrangement of an air cavity and a liquid cavity in an isolation suite, the expansion function of an instrument is maintained, and disinfectant can be injected into the liquid cavity through a liquid pipe, so that the liquid uniformly permeates to the outer side wall of a contact outer layer through a guide channel and directly acts on the surface of a cavity mucous membrane. Therefore, the instrument does not need to be repeatedly taken out during cleaning and disinfection operation, mechanical friction to a wound in a traditional taking-placing process is fundamentally avoided, the risk of secondary injury is remarkably reduced, and the treatment comfort of a patient is improved. Secondly, due to the arrangement of an air pipe and an air one-way valve, air can be injected into the air cavity to enable the contact outer layer to expand to be attached to the inner wall of the cavity channel, and precise expansion is achieved; the air one-way valve ensures that the pressure in the air cavity is constant, and instrument displacement or excessive tissue compression caused by pressure fluctuation is avoided. According to the structure, the stability of the expansion effect is guaranteed, local stress concentration on the mucous membrane is reduced, and the structure is particularly suitable for supporting fragile tissue after an operation.

The present disclosure relates to systems and methods for detecting suture failure during surgical stapling, and provides a computer-implemented method for controlling a surgical stapling instrument, comprising advancing an anvil assembly relative to a cartridge to a first position defining a tissue gap between the cartridge and the anvil assembly and clamping tissue, the clamped tissue including a suture, measuring a first tissue compression force of the tissue clamped in the tissue gap with the anvil assembly at a first point in time, determining whether the measured first force is greater than a threshold value, in response to a determination that the first force is greater than the threshold value, measuring a second tissue compression force of the tissue clamped in the tissue gap at a second point in time, determining whether the suture has failed based on the measured second force being less than the measured first force by an amount, and stopping advancement of the anvil assembly based on a determination of suture failure.

The surgical device includes a reload assembly having a plurality of staples and a memory device that stores data including a minimum clamping force limit value. The surgical device also includes an anvil assembly movable relative to the reload assembly, a power source, and a motor coupled to the power source. The surgical device further includes a transmission assembly movable by the motor and configured to move the anvil assembly relative to the reload assembly. The surgical device also includes a force sensor configured to measure the force applied to the anvil assembly by the transmission assembly. The surgical device also includes a controller configured to activate the motor to move the anvil assembly relative to the reload assembly, compare the measured force to the minimum clamping force limit value, and output an alert in response to the measured force being lower than the minimum clamping force limit value.

The invention discloses a gouty arthritis arthropathy early screening method and system fused with edge calculation, and particularly relates to the field of medical related data processing.The gouty arthritis arthropathy early screening method comprises the steps that in edge nodes deployed in a screening site, a first signal, a second signal and a third signal are obtained from a target joint area of a patient, the first signal is temperature response data, and the second signal is temperature response data; the second signal is tissue compression data, the third signal is conductance change data, and the collection time is recorded for each type of signals; and respectively storing the three types of signals into an asynchronous data buffer area in an edge node. An asynchronous data buffer area is constructed in an edge node, and a time index and sliding window matching mechanism is introduced, so that temperature response at different time arrives is realized, and time sequence alignment and fusion evaluation of compression and conductance change signals are organized to identify abnormal changes which are staggered in time and have relevance; therefore, the problems that an existing system cannot recognize non-synchronous correlation anomalies and easily misjudges that lesion features are invalid information are solved.

A circular stapler for cutting and applying one or more surgical staples to tissue is disclosed. The circular stapler includes various forms of detection systems that are configured to provide feedback to the surgeon that proper tissue compression has been achieved between an anvil of the circular stapler and a stapling head of the circular stapler before firing of the circular stapler. The various forms of detections systems can include one or more of sensors, thin rods, couplers with spur gears, torsion springs, and planetary gears, among other options for detecting that proper tissue compression has been achieved between the anvil and the stapling head before firing of the circular stapler.

A compression device having an elongated compressive element which can be looped into and adjusted to different desirable sizes around target tissue. The compressive element may be a simple suture string or the like having a distal portion looped around the target tissue and extending to a proximal end positioned outside the patient's body and graspable and manipulable by a medical professional to adjust the looped distal portion. A cinch device may be preloaded on and delivered with the compressive element to target tissue. The cinch device may be coupled with the compressive element in a manner which may facilitate maintenance of the looped configuration of the distal portion of the compressive element and / or to hold the distal portion of the compressive element in a final looped configuration applying the desired compressive force to the target tissue surrounded by the compressive element.

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.

The invention discloses a novel round-head anastomat cutting assembly which comprises a driving assembly and a cutting assembly body rotationally connected with the driving assembly, the cutting assembly body comprises a first clamp and a second clamp which are rotationally connected with each other, and a round-head part is arranged at the end, away from the rotationally connected end, of the first clamp; the device is simple in structure and reasonable in design, the round head piece is arranged at the far end of the first clamp and is in smooth collinear transition with the bottom of the clamp, round guiding in the inserting and closing process is achieved, and tissue compression friction is remarkably reduced; the first working face of the round head piece and the second working face of the second clamp keep a design gap when closed, smooth cutting is guaranteed, and the risk that tissue is damaged by clamping is reduced.

A circular stapler for cutting and applying one or more surgical staples to tissue is disclosed. The circular stapler includes various forms of detection systems that are configured to provide feedback to the surgeon that proper tissue compression has been achieved between an anvil of the circular stapler and a stapling head of the circular stapler before firing of the circular stapler. The various forms of detections systems can include one or more of sensors, thin rods, couplers with spur gears, torsion springs, and planetary gears, among other options for detecting that proper tissue compression has been achieved between the anvil and the stapling head before firing of the circular stapler.

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.

To provide a fixing device for herbal medicine hot compresses. [Solution] A hot compress bag placement part 120 is provided on the bottom of the hot compress device 110, and a positioning assistant part 210 is located below the hot compress area. Both ends of the positioning assistant part are respectively connected to quick connection parts 220 so that their position can be restricted, and the other ends of the quick connection parts are respectively connected to both ends of the hot compress so that their position can be restricted. The quick connection part includes an adjustment belt, the upper part of which is quickly attached to the hot compress device, and the bottom of the adjustment belt is respectively attached to both ends of the positioning assistant part. After the lower end of the adjustment belt passes through the connecting ring of the positioning assistant part, the two outer Velcro strips are attached in opposite directions to adjust the tightness. This not only meets the fixation requirements of patients with different body types (e.g., adults, adolescents, or different parts of the waist, abdomen, joints, etc.), but also avoids the problems of excessive tightness causing tissue compression or excessive looseness resulting in poor adhesion.

A surgical instrument receives an indication to provide adaptive control of surgical instrument functions. The indication may indicate to provide adaptable staple height operating range, to control motors associated with tissue compression, and / or to operate using the operational parameters associated with previous surgical procedures. The surgical instrument may determine values for parameters associated with the identified function and adapt the control of the identified function based upon the determined parameters. The surgical instrument may adapt a display of staple height operating range based on parameters indicating a size of an anvil head. The surgical instrument may control motors associated with tissue compression based on parameters indicating force applied in the instrument. The surgical instrument may operate according to operational parameters identified by a surgical hub.

A circular stapler for cutting and applying one or more surgical staples to tissue is disclosed. The circular stapler includes various forms of detection systems that are configured to provide feedback to the surgeon that proper tissue compression has been achieved between an anvil of the circular stapler and a stapling head of the circular stapler before firing of the circular stapler. A surgical system includes a console and a controller communicatively coupled to the circular stapler which aids in processing and displaying data to provide feedback to the surgeon that proper tissue compression has been achieved between the anvil and the stapling head before firing of the circular stapler.

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.

The present disclosure relates to a surgical clip (2) consisting of a closed ring having a first gripping section (4) and a second gripping section (6), each having a base section (5, 7) and a plurality of gripping teeth (10), and two elastically deformable hinge sections (8), the invention relates to a ring (1) comprising a plurality of gripping sections (4, 6), each of which has gripping teeth (8) located between two circumferential ends (12, 14) of the gripping sections (4, 6) and substantially parallel to each other and extending away from a respective base section (5, 7), and a hinge section (8) arranged next to the circumferential ends (12, 14) of the gripping sections (4, 6), the hinge section (8) having a bend extending towards the inside of the ring, according to the invention, the hinge section (8) and the gripping section (4, 6) are arranged such that the circumferential ends (12, 14) of the hinge section (8) and the gripping section (4, 6) at least partially face each other such that a gap is formed between the circumferential ends of the hinge section and the gripping section, the circumferential end (12, 14) of at least one of the gripping sections (4, 6), preferably two gripping sections (4, 6), has a plurality of rounded or circular pressing teeth (16, 17, 18, 19, 20) which extend in the direction of the hinge section (8), the articulation section (8) and the gripping section (4, 6) are arranged such that a gap between the articulation section (8) and the circumferential end (12, 14) of the gripping section (4, 6) takes a wave geometry or is designed in a wave shape for compressing tissue. Furthermore, the invention relates to a system for applying a surgical clip (2) at a location in a body cavity of a patient to compress body tissue.

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.