29 results about "Tissue fluid" patented technology

The application discloses a kind of lymphedema wearable type baking therapy drainage devices, including pressure sleeve, pressure sleeve includes multiple independent control outer layer air bag and multiple independent control inner layer air bag, outer layer air bag and inner layer air bag staggered arrangement and along the axial distribution of limb;Each outer layer air bag and each inner layer air bag independent control, along the direction of far end to near end, in turn, air bag is inflated and deflated control, to complete a cycle air bag progressive drainage pressurization.The pressure sleeve of the application has double-layer air bag, each air bag is independently controlled, and can extrude tissue fluid from far end to near end, so that tissue fluid moves to near end, and pushes and extrudes tissue fluid from limb to trunk direction.Because inner layer air bag and outer layer air bag are staggered arrangement, can avoid effusion to remain in the gap of adjacent annular air bag;The pressure sleeve of the application is provided with inner support tube, and forms circumferential block.

This utility model relates to the field of blood sampling technology, specifically to a medical blood sampling device, comprising: a base plate, on which a support frame is fixedly mounted; and a driving assembly, which includes a rotating wheel disposed above the base plate and on one side of the support frame, with multiple collection cylinders slidably mounted in a circumferential array inside the rotating wheel. Through the design of the collection assembly, during blood sampling after a patient's finger is punctured, a rubber column can be used to squeeze and rub the sides of the fingertip, accelerating the flow of blood from the puncture point and dripping blood containing tissue fluid. The roller design allows for the enlargement of the roller diameter after the first drop of blood containing tissue fluid drips from the puncture point, lifting the finger and facilitating subsequent sampling. The dripped blood can be collected through the collection cylinders, preventing it from dripping to other places and causing inconvenience for subsequent cleaning.

The application provides a kind of simulated human tissue fluid and its preparation method and application, it relates to wireless communication technical field, the simulated human tissue fluid includes: water, 55wt%~75wt% by mass percentage;Ionic inorganic salt, 2wt%~5wt%;Albumin, 10wt%~18wt%;Lipid, 12wt%~20wt%;Non-ionic surfactant, 2wt%~4wt%;Preservative, 0.2wt%~1wt%.Therefore, by water, ionic inorganic salt, albumin, lipid, non-ionic surfactant and preservative cooperate to simulate the skin of human body, so as to be able to carry out APD test in the frequency range of 10GHz~30GHz, and the stability of simulated skin tissue fluid is good, and the cost is lower.

This utility model discloses an adjustable cell filter, including a filter cover and a connecting sleeve disposed at the bottom of the filter cover. The top of the filter cover is open, and a retaining ring is fixed to the lower circular inner wall of the center of the filter cover. A placement ring is placed at the top of the retaining ring, and a cylindrical filter frame is fixed inside the placement ring. The top of the cylindrical filter frame is open. By adding a novel flow guiding and anti-splash device inside the upper side of the center of the filter cover, located above the cell filter membrane, when tissue fluid is poured in, it is poured into the conical flow guiding and anti-splash cover. Its smooth inner wall allows the tissue fluid to flow slowly, avoiding impact on the cell filter membrane and extending its life. The conical structure can also converge and guide the flow. The flat cylindrical protective cover further buffers the flow, allowing the tissue fluid to fall smoothly onto the cell filter membrane, achieving uniform filtration. The hemispherical diffuser block arches upward to diffuse the tissue fluid, avoiding excessive local pressure that could damage the filter membrane, optimizing distribution, and improving efficiency and quality.

The utility model discloses a high sharpness injection needle, including needle tube and needle tip, the needle tip adopts three -stage tapering type multi -edge surface structure, and this three -stage tapering type multi -edge surface structure is composed of main cutting part, transition part and micro blade part, the main cutting part includes three symmetrical distribution's first inclined plane, and every first inclined plane bifurcates two second inclined planes to form transition part, and every second inclined plane bifurcates two third inclined planes to form micro blade part, the needle tip surface is equipped with a plurality of micro -groove, and the third inclined plane intersection of on micro blade part forms nanometer -class blade edge, and this blade edge edge is equipped with periodic micro sawtooth. The utility model discloses a needle tip is three -stage tapering type multi -edge surface structure, and the puncture resistance is reduced in stages, and the pain feeling is reduced, sets up micro sawtooth and can reduce the tissue contact area through " point cutting", and the local stress concentration when puncturing, and then delay passivation, sets up micro -groove and can guide the tissue fluid flow, destroys the negative pressure adsorption effect, and improves the needle insertion smoothness.

This utility model relates to the field of minimally invasive postoperative wound dressing technology, specifically a minimally invasive postoperative wound dressing with wound closure function. It includes an adhesive layer, release paper installed on both sides of the bottom of the adhesive layer, low-sensitivity adhesive tape evenly installed on both sides of the top of the adhesive layer, and a sterilization layer embedded in the middle of the adhesive layer. The improved minimally invasive postoperative wound dressing adds a first elastic band and a second elastic band. When the wound dressing is applied to the wound surface, the first and second elastic bands can be pulled to traction the sides of the adhesive layer, thereby effectively closing the wound, reducing the risk of wound dehiscence, and promoting rapid wound healing. An absorbent layer made of highly absorbent resin is also added, allowing the absorbent layer to quickly absorb tissue fluid exudated from the wound during the healing process, helping to reduce the risk of wound infection and thus promoting wound healing.

This invention discloses a connecting sleeve, its manufacturing method, and an electrode assembly. The connecting sleeve, used at the connection point between an electrode lead and an extension lead, includes a sleeve body and a sealing portion. The sleeve body has a channel for accommodating the electrode lead and the extension lead, and the sleeve body has opposing first and second connecting ends. The sealing portion is disposed at the first and / or second connecting ends, forming a seal between the electrode lead and / or the extension lead at the first and / or second connecting ends respectively when the electrode lead and / or the extension lead are accommodated within the channel. By providing the sealing portion, the connecting sleeve can form a seal at both ends of the sleeve body when the electrode lead and the extension lead are connected within the channel, preventing tissue fluid from entering the channel through the gaps at both ends of the sleeve body. This prevents tissue fluid leakage into the channel from affecting the signal connection of the electrode lead and the extension lead, avoiding product malfunctions and other adverse effects.

Systems and methods for delivering to and / or receiving fluids or other materials, such as blood or interstitial fluid, from subjects, e.g., from the skin. Beading disruptors and / or capillaries may be used for facilitating the transport of fluids from a subject into a device. Beading disruptors may disrupt the “pooling” of bodily fluids such as blood on the surface of the skin and help influence flow in a desired way. A capillary may conduct flow of fluid in the device, e.g., to an inlet of a channel or other flow path that leads to a storage chamber. A vacuum (reduced pressure relative to ambient) may be used to receive fluid into the device, e.g., by using relatively low pressure to draw fluid into the inlet of a channel leading to a storage chamber. The vacuum source may be part of the device and have a volume that is larger than a recess of the fluid transporter that receives fluid from a surface.

The application discloses a puncture needle with friction-reducing lubrication, which has a microstructure in the form of a butterfly-shaped groove on the outer surface of the puncture needle; the microstructure is uniformly distributed on the surface of the puncture needle, and the microstructure can quickly collect tissue fluid during puncture and needle withdrawal, and realize friction-reducing lubrication. During puncture, tissue fluid enters through the front end microstructure taper angle, and during needle withdrawal, tissue fluid enters through the rear end microstructure taper angle. Through the design of the microstructure vertex angle, length and center distance parameters, tissue fluid can be effectively collected and stored as a lubricant during the puncture process, so that the friction between the puncture needle and the skin soft tissue is reduced, and a good friction-reducing lubrication effect is achieved.

The application relates to a dynamic biochemical collector, which comprises a mounting box, blood glucose probes and blood ketone probes arranged in the mounting box, and a power supply arranged in the mounting box. A double-channel control chip is further arranged in the mounting box. The power supply is used for supplying power to the blood glucose probes, the blood ketone probes and the control chip. The blood glucose probes and the blood ketone probes are respectively used for collecting human blood glucose and blood ketone information. The control chip is used for receiving blood glucose information and blood ketone information through two communication channels. A communication module is arranged in the mounting box and is electrically connected with the control chip. The communication module is used for outputting signals processed by the control chip. The blood glucose probes and the blood ketone probes are used for synchronously detecting blood glucose information and blood ketone information in human tissue fluid. Then, the information is received by the double-channel control chip and is output by the communication module, so that synchronous monitoring of blood glucose and blood ketone is realized.

This invention discloses a quantitative assessment and adaptive intervention system and method for fluidized tissue, belonging to the fields of enterprise management informatization and artificial intelligence technology. The system includes: a data acquisition module for acquiring role change logs, reporting relationship change logs, and process instance generation logs; a DRSF calculation unit for calculating the dynamic role switching frequency; an RSI calculation unit for calculating the reporting relationship stability index; a PGA calculation unit for calculating the process generation autonomy; a comprehensive index generation module for standardizing and weighting DRSF, RSI, and PGA to generate a comprehensive fluidized tissue index (LOI); and an intervention recommendation module for automatically generating organizational intervention suggestions when the indicators exceed thresholds. This invention proposes for the first time three quantifiable organizational fluidization assessment indicators: DRSF, RSI, and PGA, achieving multi-dimensional comprehensive diagnosis of organizational fluidity and automatically triggering interventions based on thresholds to form a closed-loop optimization. This invention can be embedded into existing enterprise management systems, providing a quantitative tool for digital transformation.

This utility model relates to the field of medical device technology and discloses a laparoscopic electrocoagulation hook with a smoking function. It includes a handle, a sleeve, an electrocoagulation rod, and an electrocoagulation hook head. A negative pressure absorption assembly is connected to the end of the sleeve away from the electrocoagulation hook head. A trigger switch for controlling the negative pressure absorption assembly is provided on the outer side of the handle. Several smoking holes are perforated through the outer wall of the sleeve near the electrocoagulation hook head. This laparoscopic electrocoagulation hook with a smoking function allows the trigger switch on the handle to activate the negative pressure absorption assembly to extract air from inside the sleeve. The smoke generated during surgery is then extracted through multiple smoking holes at the end of the sleeve, ensuring clear visibility of the surgical environment. The array design of multiple smoking holes significantly improves smoke collection efficiency, ensuring a clear surgical field. Furthermore, it effectively reduces the obstruction of the smoking channel by surgical exudates such as blood and tissue fluid during surgery, significantly improving the durability and operational stability of the laparoscopic electrocoagulation hook.

This invention provides a PHA radiotherapy isolator, its preparation method, and its usage method. The PHA radiotherapy isolator is made of PHA material, and the weight-average molecular weight of the PHA material ranges from 500 to 800 kDa. The preparation method of the PHA radiotherapy isolator includes: dissolving the PHA material in an organic solvent to obtain a PHA solution; pre-freezing the PHA solution to form a solidified body; and vacuum drying the solidified body to obtain the PHA radiotherapy isolator. The PHA radiotherapy isolator provided by this invention is absorbable by the human body, has good mechanical properties, and good fixation; it uses a single-component raw material, i.e., it is made only from PHA material, and the preparation process is simple; the PHA radiotherapy isolator contains only PHA material, and its degradation products have the effect of reducing radiation-induced inflammation, and tissue fluid does not easily penetrate into the PHA radiotherapy isolator during use.

This invention discloses a dehydrated and rehydrated ultrasound-enhanced chitosan gel without a radiopaque unit and its applications. By controlling the water content of the gel through dehydration and rehydration strategies, this invention constructs a chitosan gel with excellent ultrasound imaging performance without introducing a radiopaque unit. It has significant industrialization potential and clinical application prospects, providing a novel material for the medical and tissue engineering fields. This material can be easily adapted for minimally invasive implantation. After implantation, it can achieve in-situ expansion and anchoring through tissue fluid permeation and rehydration, exhibiting flexibility and no foreign body sensation, making it suitable for reference marking in human soft tissue areas. This process of dehydrating and rehydrating conventional high-water-content hydrogels can increase the acoustic impedance value of the material without introducing a radiopaque unit, and improve the ultrasound imaging effect by controlling the gel's water content.

This invention discloses a multi-electrode subcutaneous implantable biosensor, comprising a flexible composite substrate, a three-dimensional electrode system, and an in-situ self-maintaining system. The three-dimensional electrode system includes at least one first working electrode disposed on the front side of the flexible composite substrate, and a solid reference electrode and a counter electrode disposed on the back side. The working electrode, solid reference electrode, and counter electrode are electrically connected through inclined conductive vias penetrating the flexible composite substrate. The in-situ self-maintaining system is communicatively connected to a signal processing and control circuit, enabling active intervention on the surface microenvironment of the working electrode. By arranging the working electrode on the front side of the flexible composite substrate and the solid reference electrode and counter electrode on the back side, and utilizing inclined conductive vias to achieve three-dimensional electrical interconnection, the front working electrode is brought closer to the tissue fluid to be tested, optimizing mass transfer. The back electrode is located away from the implantation interface, which is heavily contaminated with biofouling, providing a more stable and cleaner electrochemical environment for the reference electrode.

This application discloses a tissue fluid extraction device, relating to the field of health monitoring technology. The device includes an alternating current source and electrodes. The output terminal of the alternating current source is connected to the electrodes and is used to output a preset number of predetermined alternating current signals to the electrodes at preset time intervals. The preset time interval is greater than 0, and the preset number of signals is greater than or equal to 2. The electrodes are used to apply electrical stimulation corresponding to the alternating current signal output by the alternating current source to the tissue fluid extraction site, causing the tissue fluid to be released at the extraction site under electrical stimulation. This tissue fluid extraction device enables non-invasive tissue fluid extraction.

The utility model discloses a kind of with clean function storage bag, belong to the technical field of storage bag, comprising: two lower bag body and two upper bag body;Multiple side bag body, all be set between two lower bag body and two upper bag body, two The lower bag body and two lower bag body between are equipped with main partition and secondary partition;The utility model, through the sponge block and cleaning liquid being arranged in surgical medical instrument storage bag, blood, tissue fluid and other biological pollutants on the surface of medical instrument can be conveniently and effectively cleaned, cooperate with the air bag in multiple mounting sleeve, the size of air bag can be adjusted, so that sponge block surface uniformly sticks to medical instrument shape, improve the effect that sponge block cleans medical instrument, this double-acting mechanism not only realizes the instant interception and removal of pollutant, effectively reduces the risk of cross infection, more simplifies postoperative cleaning process, so that surgical medical instrument storage bag is used The practicality is better.

The application discloses a subcutaneous implantable continuous hormone monitoring device for an IVF (In Vitro Fertilization) stimulation cycle, which comprises a shell, a tissue fluid flow channel, a plurality of monitoring components and a control system; the shell is provided with a liquid inlet hole and a containing cavity; the tissue fluid flow channel is arranged in the containing cavity and comprises a tissue fluid inflow channel and at least four detection cavities; the liquid inlet hole, the containing cavity, the tissue fluid inflow channel and the at least four detection cavities are sequentially communicated; each monitoring component is one-to-one correspondingly arranged in each detection cavity; the monitoring component comprises a first electrochemical sensor and a specific recognition element; a working electrode of the first electrochemical sensor is arranged in the detection cavity; the specific recognition element is arranged on the working electrode and is used for being specifically combined with a target hormone; the specific recognition elements belonging to different monitoring components are specifically combined with different target hormones; and the plurality of first electrochemical sensors are electrically connected with the control system. The application aims at improving the accuracy of monitoring data.

This utility model relates to the field of medical device technology and discloses a nasopharyngeal specimen extraction device, including a fixed tube, an extraction assembly, and a negative pressure suction device connected in sequence. The extraction assembly includes an extraction tube, an annular filter, a fixed ring, and several elastic plates. The annular filter is fixedly disposed on the inner circumferential wall of the extraction tube and is used to allow mixtures such as blood, mucus, or tissue fluid to pass through, while also blocking the passage of nasopharyngeal specimens. The first end of each elastic plate is fixedly disposed on the fixed ring. The second end of each elastic plate is inclined towards the middle of the extraction tube. When the negative pressure suction device is activated, it drives the second ends of each elastic plate to sequentially abut. The closed elastic plates guide the mixture containing the nasopharyngeal specimen to flow towards the annular filter on the outer circumference of the elastic plates. The annular filter blocks the nasopharyngeal specimen, separating the nasopharyngeal specimen from the mixture within the nasopharynx, thus achieving simultaneous specimen protection and visual field cleaning.

The application discloses a surgical extractor, which comprises a bag body, a sheath and a surgical instrument. The sheath is in sealed connection with the bag body, and the inside of the sheath has an operation channel which is closed relative to the inside of the bag body; the sheath is provided with an opening which is used for connecting the operation channel with the outside of the bag body. The surgical instrument comprises an end effector and an operating mechanism. At least part of the end effector is detachably accommodated in the operation channel via the opening, and the operating mechanism drives the end effector to perform a clamping action or a releasing action in response to being manipulated. The surgical extractor of the application can prevent the tissue liquid adhered to the end effector from polluting the inside of the abdominal cavity when the surgical instrument is taken out after the operation is completed, and the spreading risk is avoided.

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.

The application discloses a kind of adjustable support for bone block pulling, belong to medical instrument technical field, including first support and the guide screw of being installed in the middle part of first support, the lower end of the guide screw is equipped with second support, the long traction needle of the two sides of first support is set to stainless steel material, the middle short traction needle of the two sides of second support is set to zinc metal material.The adjustable support for bone block pulling, the traction needle of the two sides of support is made of stainless steel material, the middle traction needle is made of zinc metal material, different metals form primary cell effect under the environment of body tissue fluid, make middle zinc needle accelerate degradation, form local high concentration zinc ion area around needle path and wound, while primary cell reaction produces weak local electric field, the synergistic effect of bacteriostatic and healing of zinc ion and the role of promoting blood vessel regeneration and promoting tissue repair of local electric field synergistically, significantly improve the microcirculation of diabetic ischemic extremities, accelerate ulcer wound healing, improve the effect of limb salvage.

The application discloses a sample extraction device for microglial cell tissues and belongs to the technical field of sample extraction devices for cell tissues. In order to solve the problem that when cell tissues at different liquid levels or at different positions of the same liquid level are extracted, a set of extraction systems is shared, and cell tissues at different levels are mixed together, thereby affecting subsequent observation and research work on the cells, the length of the lengthening cylinder is adjusted by rotating the driving cylinder, so that the plurality of extraction assemblies correspond to different depths, and the suction and discharge actions of the air bag can be matched, so that microglial cell tissues at different depths in the separation box can be extracted at the same time, and the extraction efficiency is improved. In addition, when the cell tissues are sucked in, the blocking ring moves up and contacts the mounting ring, the fixed cylinder is effectively blocked by the sealing plate and the sealing ring, the tissue fluid is prevented from entering the air bag and causing pollution, the sealing element between the fixed cylinder and the lengthening cylinder ensures the sealing property during sliding, gas leakage is avoided, the formation of the extraction negative pressure is affected, and the extraction effect is ensured.

This invention relates to the field of medical device technology and provides a laparoscopic cleaning sheath, comprising: a tube body with a laparoscopic channel, a liquid channel, and a gas channel within the tube body; and a sheath end cap disposed at the distal end of the tube body, the end cap having a liquid nozzle and a gas nozzle; the liquid nozzle is connected to the liquid channel for spraying liquid toward the laparoscopic endoscope located within the tube body, and the gas nozzle is connected to the gas channel for spraying air toward the laparoscopic endoscope located within the tube body. In use, the laparoscopic cleaning sheath provided by this invention allows the liquid nozzle to spray liquid toward the laparoscopic endoscope located within the tube body to clean the lens; the gas nozzle can spray air toward the laparoscopic endoscope located within the tube body to dry the lens. This effectively solves the problem of surgical delays or increased infection risks caused by the need to remove the endoscope for cleaning when its field of vision is obstructed by blood, tissue fluid, tissue debris, mist, etc.

A System and method enhance clinical effectiveness for monitoring for a change in a level of fluid in tissue by using a device attached to a body portion that wirelessly reports to a remote apparatus or receiver power level for indications of extravasation or infiltration. Adjusting an activation rate of fluid detection, reporting or both extends service life of the device.

The application discloses hollow microneedles for hair follicle extraction, a hair follicle extraction device and a skin loop cutting microneedle, and belongs to the technical field of medical devices. The length of the tubular body of the hollow microneedle for hair follicle extraction is between 12 mm and 2 mm, and the tube wall is an ultrathin tube wall with a thickness less than or equal to 0.15 mm. This structure directly reduces the travel distance and physical trauma in the tissue during the operation process, thereby significantly reducing the amount of bleeding and shortening the wound recovery time. The double-angle loop cutting edge arranged at the distal end of the tubular body can achieve precise and smooth loop cutting, effectively reducing the extrusion and damage to the hair follicle, and improving the integrity and subsequent survival rate of the extracted hair follicle. At the same time, the variable-diameter structure of the needle body in the axial direction cooperates with the hollow lumen to form a smooth negative pressure drainage channel during operation, instantly sucking blood and tissue fluid, avoiding blockage, keeping the surgical field clear, and thereby improving the continuity and overall efficiency of the operation.

This application relates to a vital signs monitor and a vital signs detection system. The vital signs monitor includes: an implantable component configured to be implanted into the subcutaneous region of a human body; the implantable component includes: a circuit board on which a blood glucose sensor is disposed; the blood glucose sensor includes at least one first light-emitting element, a photosensitive element, and at least one first light-receiving element, wherein the first light-emitting element is used to emit a light signal of a first wavelength; the photosensitive element is used to contact glucose molecules in human tissue fluid and form a fluorescent group, the fluorescent group being used to receive the light signal of the first wavelength and excite a light signal of a second wavelength, the first wavelength being different from the second wavelength; the first light-receiving element is used to receive the light signal of the second wavelength, the second wavelength being used to determine the blood glucose information of the human body. The above-mentioned vital signs monitor enables long-term and accurate monitoring of vital signs information such as blood glucose.