35 results about "Indwelling catheters" patented technology

A system for whole blood sampling and separation includes a blood draw device coupled to a catheter assembly, with the blood draw device including a catheter tube, a housing that movably receives the catheter tube, and an advancement member to move the catheter tube between first and second positions, to enable a distal end of the catheter tube to be disposed within or past a distal tip of an indwelling catheter. A blood separation device is attached to the blood draw device to directly receive a blood sample therefrom and comprises a centrifuge-free mechanism configured to separate a plasma or serum sample from the blood sample. A sample collection container is coupled with the separation device and provides a vacuum pressure that draws the blood sample into the separation device, with the separated plasma or serum sample being drawn into the sample collection container.

Hand held and portable disinfection units for use with patients having indwelling catheters or are hospitalized or under care in an intensive care unit.

The utility model provides an infusion connector which is generally used in cooperation with an indwelling catheter such as an indwelling needle in a blood vessel, and liquid medicine can be infused into the blood vessel and blood or liquid can be extracted through the infusion connector. The infusion connector comprises a separation film, a fastener and a connector base. The separation film comprises a body; a cover cap is arranged at one end of the body, the body is provided with a channel capable of being opened and closed, and an inlet of the channel is formed in the cover cap; an axially-through cavity is formed in the connector base, the separation film is contained in the cavity, and a cap of the separation film is buckled to a first connector at one end of the connector base. The cap is provided with a flange extending into the cavity, and the flange is tightly connected with the connector base through the fastener. According to the infusion connector, the separation membrane is tightly connected to the connector base through the fastener, and therefore the problem that the separation membrane fails and cannot be sealed due to the fact that the separation membrane is brought into the infusion connector in the operation process can be solved.

The present invention relates to a composition for inhibiting crystallization and / or biofilm formation on an indwelling catheter. Likewise, the present invention relates to the use of a composition as provided herein for the preparation of a medicament for inhibiting crystallization and / or biofilm formation on an indwelling catheter. The composition applied according to the invention contains trimagnesium citrate and tripotassium citrate, and the application of the composition reduces the risk of catheter blockage, reduces the risk of catheter-related urinary tract infection, reduces the risk of bladder calculus formation, reduces the risk of urethral mucosa injury caused by replacement of the indwelling catheter, and reduces the risk of urinary tract mucosa damage caused by replacement of the indwelling catheter. And allows the catheter to be used over an extended period of time.

The present invention provides a pharmacological wearable cardioverter defibrillation system for conducting cough assisted pharmacological cardioverter defibrillation during onset of a sudden arrhythmia. The system comprises a WCD defibrillator worn by the patient, a drug mix contained either in a reservoir / pump or in an inhaler, and a miniature monitor. The drug mix in the reservoir / pump is equipped with a pump for pumping the drug mix via an indwelling catheter to the coronary sinus while the drug mix in the inhaler is inhaled directly to the lungs. When a sudden arrhythmia is detected by a sensing electrode of WCD, the following steps are carried out: prompting the patient to take the drug mix, prompting the patient to start forceful coughing, and delivering electric shock(s) under either one of the two circumstances that the patient is unable to start coughing or the arrhythmia is not terminated.

The present application belongs to the field of medical material surface functionalization, and particularly relates to a kind of nano drug-loaded hydrogel catheter coating and its preparation method and application.The present application utilizes PLGA to load antibiotic amikacin sulfate AMK or antibacterial peptide FK13-a1, synthesizes nanoparticle NP-AM and nanoparticle NP-FK, prepares NP-AM / FK@OMV nanoparticle complex with EcN OMV as carrier, then adds poloxamer-hyaluronic acid composite hydrogel to obtain NP-AM / FK@OMV-P / H nano drug-loaded hydrogel, and forms coating after coating and drying.The nano drug-loaded hydrogel coating provided by the present application has the characteristics of enzyme response, antibacterial, prevention of biofilm formation and low toxicity, has great application potential in inhibiting medical catheter surface biofilm, and has important significance for preventing and treating CAUTI, prolonging the use time of indwelling catheter, and reducing the discomfort of patients caused by frequent replacement of catheter.

The invention belongs to the technical field of medical teaching information, and particularly relates to an umbilical cord model umbilical vein indwelling catheter module improvement system and method based on a novel biomimetic material. The system focuses on clinical training requirements of umbilical vein catheterization in newborn intensive care, and overcomes core defects of a traditional training model in material bionic degree, operation feedback precision and durability by innovating a bionic material formula, optimizing a catheterization channel structure and designing a multi-dimensional sensing feedback and evaluation algorithm. A practical operation training solution with real operation hand feeling, accurate quantitative evaluation and high reusability is provided for medical teaching, and the system is suitable for skill training in scenes such as medical colleges and hospital neonatology departments.

The application discloses a double-bend type seminal vesicle support indwelling catheter, which comprises a base straight pipe, a head curved pipe, a tail curved pipe and a guide wire, the head curved pipe is arranged at one end of the base straight pipe and is used for automatically bending in the seminal vesicle during indwelling, the tail curved pipe is arranged at the other end of the base straight pipe and is used for automatically bending in the prostate small vesicle during indwelling, a through wire channel is arranged between the base straight pipe, the head curved pipe and the tail curved pipe, the guide wire can extend from the tail curved pipe to the outside of the body along the urethra during indwelling, and the guide wire is used for traction, the double-end stable fixation and the simplified cooperative design of the wire body pulling-out can solve the core problems of the instability of the existing seminal vesicle support equipment and the difficulty of pulling-out, a safer and more efficient medical instrument solution is provided for postoperative rehabilitation of the seminal vesiculoscope surgery, and the application has a high clinical popularization value.

An indwelling pleural catheter system comprises an indwelling catheter device (2) comprising a catheter tube (7) with a fenestrated distal end (7A) configured to reside in the pleural cavity of a subject and a connection hub (10) fluidically coupled to a proximal end (7B) of the catheter tube, a skin anchoring member (3) to anchor the connection hub (10) to the skin of the subject, and optionally a detachable ambulatory suction module (4) configured for detachable attachment to the connection hub (10). The suction module (4) comprises a fluid inlet (19) configured for fluidic coupling to the catheter tube (7) through the connection hub (10) and a fluid outlet (20) configured for detachable fluidic coupling to a pleural fluid drainage system (5) to drain pleural fluid through the detachable ambulatory suction module. The detachable ambulatory suction module is configured to exert a negative pressure in the catheter tube upon detachment of the pleural fluid drainage system from the suction module. Treatment of pleural effusion using the system of the invention is described. An indwelling catheter system for draining fluid from the peritoneal cavity, and methods of treating ascites, is also described.

This invention discloses a multi-compartment disinfection and docking device for hemodialysis catheters, comprising a capsule; the capsule is provided with several connecting tubes for docking with a dialysis machine; the capsule contains a first disinfection compartment for disinfecting old heparin caps, a removal compartment for removing old heparin caps, a second disinfection compartment for disinfecting the indwelling catheter interface, and a docking compartment for docking with the connecting tubes; both the first and second disinfection compartments are equipped with sterilizers for disinfection. This invention integrates the nursing work during dialysis treatment from the original multi-step, scattered actions into a continuous operation within the capsule. Simply insert the indwelling catheter into the capsule and proceed sequentially through the first disinfection compartment, removal compartment, second disinfection compartment, and docking compartment. Disinfection, cap removal, re-disinfection, and docking can be completed within the capsule by rubbing it; this simplifies the operation, avoids bacterial infection and contact contamination, and ensures the convenience and safety of hemodialysis nursing work.

The utility model provides a disposable indwelling catheter perineum flushing bag which comprises a cotton swab bag, a cleaning fluid area and a plurality of tweezers bags, cotton swabs in the cotton swab bag can be used for effectively cleaning the large-area area of the perineum, the cotton swabs can be moistened at any time in the cleaning process due to the arrangement of the cleaning fluid area, and the cleaning effect is improved; a plurality of tweezers bags are further arranged, one scrubbing tweezers is arranged in each tweezers bag, the scrubbing tweezers are independently subpackaged, a user can detach the scrubbing tweezers according to needs, the unused scrubbing tweezers are prevented from being polluted, the scrubbing tweezers can wrap the ureter at 360 degrees, it is guaranteed that the periphery of the ureter is comprehensively cleaned, and the scrubbing tweezers are convenient to use. Compared with a traditional cotton swab which is difficult to cover the whole surface of the ureter, the design can rapidly remove blood stains, secretions and other stains on the surface of the ureter to a great extent, and the infection risk is effectively reduced.

The invention relates to an indwelling catheter blockage early warning method and system based on pressure waveform analysis, and relates to the technical field of monitoring early warning, and the method comprises the following steps: collecting a multi-source monitoring data set comprising original pressure waveform data, instantaneous flow velocity data and electrocardio synchronous signal data; performing four-layer multi-scale decomposition processing based on a Daubechies wavelet basis function on the original pressure waveform data to generate a multi-scale waveform component set; constructing a catheter downstream vascular bed fluid mechanical impedance model by combining the basic information of the patient, and deducing and generating a catheter downstream vascular bed impedance change index; dynamic baseline drift modeling is carried out through a sliding time window, and a self-adaptive catheter blockage risk reference threshold value is set; constructing a patient specific risk factor graph structure, performing time sequence prediction analysis on the feature sequence through a recurrent neural network, and generating a future risk evolution trend index; and a third-level early warning signal is generated. The method has the beneficial effect that the sensitivity and the specificity of early warning of catheter blockage are remarkably improved.

The application is suitable for the technical field of medical devices, and provides a device and a method for long-term in-vivo monitoring of fascia chamber pressure and temperature. The device comprises: an indwelling catheter having a hollow inner cavity constituting a pressure conducting channel; a pressure sensor in sealed communication with the pressure conducting channel, for monitoring the pressure in the fascia chamber; a temperature sensor fixed to the outer wall of the indwining catheter and physically isolated from the pressure conducting channel, for monitoring the tissue temperature in the fascia chamber; a main control module electrically connected with the pressure sensor and the temperature sensor, for receiving and processing pressure signals and temperature signals to generate monitoring data; and a transmission module for transmitting the monitoring data to a terminal device. The application physically isolates the temperature sensor from the pressure conducting channel, thereby ensuring the accuracy of pressure measurement, and improves the evaluation accuracy through joint determination of two parameters, and can realize remote centralized monitoring and improve the monitoring efficiency.

This invention provides a method for preparing a deep vein catheter and its inner and outer walls with zwitterionic hydrogel coatings. The catheter of this invention includes: a catheter substrate; an adhesive coating covering the inner and outer walls of the catheter; an inner wall coating and an outer wall coating (4); wherein the inner wall coating and the outer wall coating are respectively fixed to the inner and outer surfaces of the catheter substrate by the adhesive coating; and both are zwitterionic hydrogel coatings. By simultaneously constructing this hydration barrier on the inner and outer walls of the catheter, this invention can block platelet adhesion and coagulation pathway activation from the initial stage of thrombosis; at the same time, the semi-interpenetrating network or microgel-reinforced structure significantly improves the mechanical stability and durability of the hydrogel, making it suitable for long-term indwelling catheters.

A blood draw device for advancing an extension catheter into an indwelling catheter includes an introducer housing, a kink-resistant support tube, a primary advancement member, and a secondary advancement member. The primary advancement member is movable relative to the housing to move the catheter from a first catheter position within the introducer to a second catheter position where a catheter distal end extends out past the indwelling catheter. The secondary advancement member is distal from the primary advancement member and is movable relative to the housing to move the support tube from a first tube position within the introducer to a second tube position where a tube distal end extends out past the indwelling catheter. When in the second tube position, the support tube is arranged coaxially about a portion of the catheter, to prevent kinking thereof as it advances from the first catheter position to the second catheter position.

This utility model relates to a device delivery device. A device delivery device for advancing a device into an indwelling catheter of a vascular access device includes a guide housing, the guide housing including a housing connector located at a distal end of the guide housing, and an actuator movably coupled to the guide housing to move the device between a first position, in which the device is disposed within the housing, and in a second position, in which a distal portion of the device is configured to extend distally beyond the guide housing. A locking member of the delivery device secures the guide housing to the vascular access device. The locking member includes a locking member connector that mates with the housing connector and is positioned around the housing connector such that the housing connector is positioned within the locking member connector. The locking member also includes a blunt sleeve, a pair of arms configured to engage with the vascular access device, and a fluid seal positioned within the lumen of the locking member.

This invention relates to a blood-drawing device for advancing a catheter into an indwelling catheter of a vascular access device. The blood-drawing device includes a guide having a housing, and a propulsion member movable relative to the housing to move the catheter between a first position, in which the catheter is disposed within the guide, and in the second position, in which a distal portion of the catheter is disposed outside the distal portion of the guide. One or more catheter support inserts are positioned between the propulsion member and the distal portion of the housing, wherein each of these catheter support inserts defines a channel for receiving and providing support to the catheter. Each catheter support insert includes a first end plate and a second end plate having an opening through which the catheter passes, and a flexible hinge member disposed between the first and second end plates, the flexible hinge member flexing to change the distance between the first and second end plates.

The present application relates to a kind of based on pressure waveform analysis's indwelling catheter blockage early warning method and system, it is related to monitoring early warning technical field, including acquisition contains original pressure waveform data, instantaneous flow rate data and electrocardiogram synchronous signal data multisource monitoring data set;Original pressure waveform data is executed based on Daubechies wavelet base function four-layer multiscale decomposition processing, generates multiscale waveform component set;Combining patient basic information constructs catheter downstream vascular bed fluid mechanics impedance model, deduces and generates catheter downstream vascular bed impedance change index;Through sliding time window, dynamic baseline drift modeling is carried out, and adaptive catheter blockage risk benchmark threshold is set;Construct patient-specific risk factor graph structure, through recurrent neural network, time series prediction analysis is carried out to feature sequence, generates future risk evolution trend index;Generate three-level early warning signal.The present application has beneficial effect for significantly improving the sensitivity and specificity of catheter blockage early warning.

The invention belongs to the field of medical instruments, and discloses an ultrasound-guided nerve block puncture device which comprises a puncture catheter unit and a subcutaneous tunnel unit and further comprises a pasting part and a clamping part. The puncture indwelling catheter unit comprises a puncture needle and an indwelling catheter, the puncture needle and the indwelling catheter jointly pierce from a first puncture point, and after the puncture needle reaches a target area, the indwelling catheter is axially pushed to the target area along the puncture needle; the subcutaneous tunnel unit is used for puncturing from the second puncture point, the puncture needle is slidably connected to the interior of the indwelling catheter, and a subcutaneous tunnel for the tail end of the indwelling catheter to penetrate through is constructed between the first puncture point and the second puncture point; the indwelling catheter is arranged on the outer side of the puncture needle in a sliding and sleeving mode, the puncture needle provides rigid support for the soft indwelling catheter, guidance is provided for movement of the indwelling catheter, and it is ensured that the indwelling catheter can reach a target area along a preset track; and the problem that the indwelling catheter is easy to deviate and distort due to secondary catheter indwelling after needle withdrawing in the traditional method is effectively avoided.

The present application provides a kind of polypeptide sustained-release hydrogel coating for preventing catheter urinary tract infection and its preparation method, the coating includes the adhesive bottom layer attached to the surface of catheter substrate, and the polypeptide sustained-release hydrogel functional layer compounded outside the adhesive bottom layer;The functional layer includes hydrophilic hydrogel gel-forming matrix, targeted antibacterial polypeptide, polypeptide sustained-release carrier and biocompatible auxiliary agent.The present application solves the interface bonding problem of hydrophobic catheter substrate and hydrophilic hydrogel through the adhesive bottom layer, the coating has strong adhesion, is resistant to urine immersion and rubbing;Through polypeptide sustained-release carrier, antibacterial polypeptide is released for 30 days, and there is no risk of burst release;The targeted antibacterial polypeptide used is specific to urinary tract infection pathogenic bacteria, has no drug resistance induction risk, has excellent biocompatibility, can effectively prevent catheter-related urinary tract infection caused by short-term and long-term indwelling catheter, the preparation process is simple and controllable, is suitable for large-scale production, and can be widely applied to antibacterial modification of urinary intervention medical devices.

A probe delivery device for advancing a probe into an indwelling catheter includes an introducer housing, a coupling member, a probe, a probe delivery tube, a probe advancement member configured to move the probe, and a tube advancement member configured to move the probe delivery tube. A distal movement of the tube advancement member collectively moves the probe delivery tube and the probe from a first position within the introducer housing to a second position where a distal end portion of the probe delivery tube and the probe are disposed into or distally past the indwelling catheter. A distal movement of the probe advancement member moves the probe from the second position to a third position, where a distal tip of the probe is moved distally out from the probe delivery tube, such that channels on the probe are exposed to provide for collection of analytes therein.

A blood draw device for advancing an extension catheter into an indwelling catheter includes an introducer housing, a kink-resistant support tube, a primary advancement member, and a secondary advancement member. The primary advancement member is movable relative to the housing to move the catheter from a first catheter position within the introducer to a second catheter position where a catheter distal end extends out past the indwelling catheter. The secondary advancement member is distal from the primary advancement member and is movable relative to the housing to move the support tube from a first tube position within the introducer to a second tube position where a tube distal end extends out past the indwelling catheter. When in the second tube position, the support tube is arranged coaxially about a portion of the catheter, to prevent kinking thereof as it advances from the first catheter position to the second catheter position.

The invention relates to the technical field of dilators, in particular to a device for dilating a urethral stricture and assisting in indwelling a ureter. Comprising a holding handle, one end of the holding handle is provided with an expansion body, the bottom of the holding handle is detachably connected with a miniature water pump, the water outlet end of the miniature water pump is detachably connected with a liquid inlet pipe, the liquid inlet pipe is detachably connected with the expansion body, the water inlet end of the miniature water pump is connected with a water inlet pipe, the water inlet pipe is inserted into a water storage tank, and normal saline is placed in the water storage tank. A water outlet pipe is arranged on the expansion body, water in the expansion body flows back into the water storage tank through the water outlet pipe, the normal saline entering speed is larger than the backflow speed, stable expansion of the medical rubber layer can be achieved, the expansion volume can be accurately adjusted by controlling the conveying speed of the micro water pump, and the expansion state of the expansion body can be maintained; meanwhile, the temperature of normal saline can be prevented from rising, the mucous membrane is prevented from being scalded, and the expansion body can be always kept in a proper temperature range.

This invention relates to the field of renal dialysis medical equipment technology, and in particular to a quick-connect anti-dislodgement connection structure for renal dialysis indwelling catheters. The structure includes a mounting base, a connecting component connected to the top of the mounting base, a protective component connected to the left end of the connecting component, a clamping component connected to the top of the protective component, and a limiting component connected to the clamping component. By setting a limiting component composed of an arc-shaped limiting box, an arc-shaped rod, a spherical stop block, and multiple sets of elastic and sliding components, a multi-layered mechanical locking anti-dislodgement structure is formed after clamping. This effectively resists the pulling force generated by the patient turning over or moving their limbs, fundamentally solving the problem of easy loosening and dislodgement caused by traditional connection methods relying solely on threaded engagement. It eliminates serious safety hazards such as blood gushing out and dialysis interruption due to accidental catheter dislodgement, significantly improving the safety and reliability of the renal dialysis treatment process and providing a stable and reliable access for dialysis treatment of end-stage renal disease patients.

The utility model discloses a fixing support for a long-term indwelling catheter for hemodialysis, and belongs to the technical field of medical instruments. Comprising a pair of mounting plates; the two ends of the telescopic frame are connected with the two mounting plates respectively, and the telescopic frame is formed by mutually riveting a plurality of rod pieces and forms a telescopic structure capable of being unfolded or folded; the supporting legs are arranged at the bottoms of the two mounting plates to raise the height of the telescopic frame, so that a containing space is formed in the bottom of the telescopic frame and used for allowing the head of the patient to stretch into, and the telescopic frame is covered with sterile drapes to enable the containing space to form a sterile area. The open space is constructed above the head of the patient, the problem of asthma suffocation caused by the fact that a traditional hole towel directly covers the face is solved, anxiety and fear caused by vision limitation are reduced, meanwhile, the space for head movement is increased, and the risk that the patient tries to take off the hole towel to pollute a sterile area is also reduced.

The utility model relates to the technical field of medical equipment, and discloses a puncture indwelling needle convenient for development positioning, which comprises a connector, a push plate is fixedly mounted at the bottom of the connector, and an indwelling catheter is fixedly mounted on the left side of the connector; the outer wall of the indwelling catheter is fixedly sleeved with a metal lantern ring, and a steel needle base is arranged on the right side of the connector. According to the utility model, the extremely thin metal lantern ring is fastened on the outer surface of the end of the indwelling catheter, so that medical staff can observe the position of the metal lantern ring through ultrasonic guidance and X-rays, the metal lantern ring can provide stronger developing and positioning capability for the indwelling catheter, the medical staff can conveniently calibrate the indwelling catheter, and the working efficiency of the medical staff is improved. Meanwhile, when the transparent indwelling catheter is broken, the metal lantern ring can also help medical staff find the broken position of the indwelling catheter, the workload of the medical staff is greatly relieved, and the medical indwelling catheter has popularization significance.

The disclosure relates to devices and methods for the treatment of edema that uses an impeller with a balloon that may be mounted on the impeller housing. The invention provides devices and methods for treatment of edema that use an indwelling catheter with an impeller to lower pressure at an outlet of a lymphatic duct and a balloon on the impeller to guide and to restrict blood flow. The balloon restricts return flow from the jugular and guides that flow into the impeller cage. By funneling the flow into the impeller cage, a rate of flow down the vessel may be increased, resulting in a lateral pressure decrease effecting the lymphatic outlet. Because the lymphatic outlet is subject to a pressure decrease, fluids in the lymphatic system drain to the outlet and into the circulatory system.

The utility model provides a novel indwelling catheter storage box, and relates to the technical field of indwelling catheter storage boxes, the novel indwelling catheter storage box comprises a box body, the top of the box body is rotatably connected with a portable assembly, the portable assembly is composed of a cover plate, a handle, a connecting ring, a connecting rope, a hook, a sealing ring, a connecting clamping groove and a connecting clamping block, and one side of the bottom of the cover plate is rotationally connected to the top of the box body, a lifting handle is fixedly connected to the top of the cover plate, and a connecting ring is fixedly connected to the side face of the cover plate. According to the novel indwelling catheter storage box, through the arrangement of the cover plate, the lifting handle, the connecting ring, the connecting rope, a hook, a sealing ring, a connecting clamping groove and a connecting clamping block, when the novel indwelling catheter storage box is used, the cover plate is rotated till the connecting clamping block is clamped into the connecting clamping groove, the cover plate and a device can be tightly connected, and then the device can be taken up by holding the lifting handle by hand; the device can be bridged on the shoulder through the arrangement of the connecting ring and the connecting rope, and then the device can be hung through the arrangement of the hook, so that the device is convenient to carry.

The present invention relates to a blood drawing device having a support tube for preventing kink during catheter advancement. A blood drawing device for advancing an extension catheter into an indwelling catheter includes an introducer housing, a kink resistant support tube, a primary advancement member, and a secondary advancement member. The main advancement member is movable relative to the housing to move the catheter from a first catheter position within the introducer to a second catheter position in which the catheter extends distal out of the indwelling catheter. The secondary advancement member is remote from the primary advancement member and is movable relative to the housing to move the support tubing from a first tubing position within the introducer to a second tubing position in which the distal end of the tubing extends out of the indwelling catheter. When the support tube is in the second tube position, the support tube is coaxially disposed about a portion of the conduit to prevent kink of the conduit when advanced from the first conduit position to the second conduit position.

This invention relates to the field of medical device technology, specifically to an indwelling catheter with a valve core. The catheter includes a catheter, a catheter seat, an extension tube, and an infusion interface assembly connected to form a medication channel within the indwelling catheter. A valve core is installed within the channel, with its head fitted to and sealing the inner diameter of the catheter outlet. The valve core is placed in the extension tube of the medication channel, and a driving device pushes or pulls the valve core along the medication channel and guide channel. This invention innovatively applies different driving methods to drive the valve core within the channel, achieving the purpose of closing and opening the medication channel from within, preventing blood backflow into the catheter from the source, completely eliminating the core causes of catheter blockage and thrombosis, and significantly reducing the frequency of flushing and sealing. The valve core moves flexibly within the catheter, preventing contamination from external contact and avoiding increasing the size of the catheter seat, which would make it inconvenient to apply to the body during indwelling. This design directly solves the problems of traditional indwelling catheters that rely on frequent flushing and sealing, leading to blockage and thrombosis; it reduces the workload of medical staff and significantly lowers clinical risks.