64 results about "Indwelling catheters" patented technology

A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and / or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.

An instrument delivery device for advancing an instrument into a vascular access device indwelling catheter includes an introducer housing comprising a housing coupler at a distal end thereof and an actuator movably coupled to the introducer housing to move the instrument between a first position where the instrument is disposed within the housing and a second position where a distal end portion of the instrument is disposed distally beyond the introducer housing. A lock of the delivery device secures the introducer housing to the vascular access device, with the lock including a lock coupler that mates with the housing coupler, with the lock coupler positioned about the housing coupler such that the housing coupler is positioned within the lock coupler. The lock also includes a blunt cannula and a pair of arms configured to engage the vascular access device and a fluid seal positioned within a lumen of the lock.

The invention discloses a double-elbow type seminal vesicle supporting indwelling catheter which comprises a base body straight pipe, a head bent pipe, a tail bent pipe and a wire, the head bent pipe is arranged at one end of the base body straight pipe and used for being automatically bent in a seminal vesicle during indwelling, and the tail bent pipe is arranged at the other end of the base body straight pipe. The tail bent pipe is arranged at the other end of the base straight pipe and used for being automatically bent in a prostate small bag in the indwelling period, a through wire penetrating channel is formed among the base straight pipe, the head bent pipe and the tail bent pipe, and the wire can extend out of the body along the urethra from the tail bent pipe in the indwelling period to be pulled. Through the collaborative design of double-end stable fixing and line body pulling simplification, the core problems that an existing seminal vesicle supporting device is unstable in supporting and difficult to pull out are thoroughly solved, a safer and more efficient medical instrument solution is provided for postoperative rehabilitation of a seminal vesicle endoscope operation, and the medical seminal vesicle supporting device has extremely high clinical popularization value.

The invention relates to the technical field of medical apparatus and instruments, in particular to a thoracic catheter rapid fixing device based on rapid clamping, comprising: a medical single-sided patch, on which a yoke plate is detachably mounted; the two sets of first arc-shaped pieces are installed on the yoke plate in a sliding mode, two sets of second arc-shaped pieces are symmetrically and rotationally installed on the first arc-shaped pieces, and the ends, away from the first arc-shaped pieces, of the second arc-shaped pieces are connected through elastic rubber pieces; the traction plate is installed on the yoke plate in a sliding mode, an energy storage part is arranged on the traction plate, and the energy storage part is matched with an elastic assembly arranged on the yoke plate, so that the elastic assembly has an energy storage state and an energy release state; and the pushing structure is connected with the traction plate and the first arc-shaped pieces, the pushing structure can drive the two first arc-shaped pieces to move close to each other when the elastic assembly is in the energy release state, and the portability of the thoracic cavity indwelling catheter during disassembly is improved.

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 utility model relates to the technical field of medical instruments, and particularly discloses a continuous invasive oxyhemoglobin saturation monitoring device and an oxyhemoglobin saturation monitoring system, which comprise a puncture needle, an indwelling cannula component and an oxyhemoglobin saturation detection optical fiber, the indwelling cannula assembly comprises a catheter seat, an indwelling catheter, a leading-in pipe and a liquid inlet pipe; a guide channel is arranged in the catheter seat; the indwelling catheter and the ingress pipe are both communicated with the catheter seat, and the tip of the puncture needle sequentially penetrates through the guide channel and the indwelling catheter; the detection end of the oxyhemoglobin saturation detection optical fiber penetrates through the ingress pipe and is inserted into the indwelling catheter; the guide channel is connected with a first sealing part, and the first sealing part is used for sealing the guide channel; the lead-in pipe is connected with a second sealing part, and the second sealing part is used for sealing the lead-in pipe; the continuous invasive oxyhemoglobin saturation monitoring device can continuously monitor the oxyhemoglobin saturation, provides continuous dynamic data for clinical diagnosis and treatment conveniently, quickly and accurately, and indirectly reduces the economic burden and physiological pain of a patient.

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 provides a risk assessment prevention and control system for an indwelling pipeline. The risk assessment prevention and control system comprises an information acquisition terminal, a risk assessment terminal, a nursing plan terminal, a registration terminal and a control terminal, the information acquisition terminal is used for acquiring patient information and nurse information in a ward; the risk assessment terminal is used for performing risk assessment on the indwelling catheter according to the patient information and the nurse information to generate risk assessment information; the nursing plan terminal is used for generating corresponding nursing plan information according to the risk assessment information; the registration terminal is used for a nurse to perform nursing registration according to the corresponding nursing plan information to generate registration information; the control terminal is used for generating permission information according to the registration information, and the permission information is used for being transmitted to a medicine opening system in the ward so as to unlock the medicine opening system. The indwelling catheter has the effect of reducing the infection risk of the indwelling catheter of the patient.

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.

The utility model provides a multipurpose blood sampling assembly which comprises an injector, a three-way valve, an inspection test tube inserting piece, a puncture blood sampling piece and an indwelling catheter blood sampling piece, a first connecting end of the three-way valve is detachably connected with a nipple of the injector, and a second connecting end of the three-way valve is detachably connected with the indwelling catheter blood sampling piece. The indwelling catheter blood sampling piece is detachably connected with the puncture blood sampling piece, the third connecting end of the three-way valve is detachably connected with the inspection test tube insertion piece, and the inspection test tube insertion piece is detachably connected with an external inspection test tube. According to the multipurpose blood sampling assembly, blood sampling through the indwelling catheter end can be achieved while blood sampling through a skin puncture blood vessel is achieved, communication between every two channels of the three-way valve is achieved by adjusting the three-way valve, and then corresponding front section blood collection and test blood collection and storage are achieved; the catheter is prevented from being repeatedly disassembled and connected in the blood sampling process, and the blood sampling convenience and safety are improved.

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.

The utility model provides a waterproof protective film for a venous indwelling catheter, which comprises a waterproof protective film, a waterproof bonding piece, a dustproof piece and a tearing piece, the size of the waterproof protective film is larger than the overall size of a fixed application and the catheter, and both sides of the waterproof protective film are not sticky; the waterproof bonding piece is arranged on the face, close to the skin of the patient, of the waterproof protection film and arranged on the peripheral side edge of the waterproof protection film in a surrounding mode. The dustproof part is arranged on the face, away from the waterproof protective film, of the waterproof bonding part, covers the waterproof bonding part and is detachably connected with the waterproof bonding part; the tearing part is arranged on the face, away from the waterproof bonding part, of the waterproof protective film, the tearing part is arranged at one end, in the length direction, of the waterproof protective film, one end of the tearing part is fixed to the waterproof protective film, and the other end of the tearing part is separated from the waterproof protective film. According to the technical scheme, the risks that the fixing application is stained with water, and the catheter falls off and even is infected can be reduced, and the comfort and compliance of a catheter indwelling patient are improved.

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.

A stylet (200) may be used to perform measurements via an indwelling catheter (100). The stylet (200) can be configured in various ways to selectively occlude the indwelling catheter (100). Because of this selective occlusion, the indwelling catheter (100) can be used for blood draws, infusions, and other functions even while the stylet (200) remains extended through the indwelling catheter (100).

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 belongs to the technical field of medical instruments, and particularly relates to a closed type indwelling catheter blood sampling device. According to the closed type indwelling catheter blood sampling device, the communication state of the three-way pipeline can be adjusted by rotating the switching valve, diluted blood is pumped out through the injection assembly, then the injection assembly is kept still, the communication state of the three-way pipeline is switched, and a blood sampling test tube for collecting blood needing to be inspected is inserted into the needle cover through the insertion opening in the needle cover; the head of the hollow needle head can be inserted into the blood collection test tube, blood needing to be inspected directly enters the blood collection test tube, and the blood collection test tube is taken down from the hollow needle head until the blood needing to be inspected is completely sucked; the communicating state of the three-way pipeline is switched again, the diluted blood in the injection assembly is injected back into the indwelling catheter, blood drawing work in the indwelling catheter is completed, the indwelling catheter does not need to be repeatedly connected and disconnected through a plurality of injectors in the whole process, the blood drawing step is simplified, and the risk of catheter related blood flow infection is reduced.

The utility model provides an indwelling catheter management module and an indwelling catheter management system, the indwelling catheter management module comprises a Bluetooth transceiver module, a catheter opening and closing module, a measurement module and a display module; the Bluetooth receiving and transmitting module is electrically connected with the urinary catheter opening and closing module; the urinary catheter opening and closing module is electrically connected with the measuring module and the display module respectively; the ureter opening and closing module is used for being detachably connected with a ureter of an in-vitro part of an indwelling ureter of a target patient and used for controlling the indwelling ureter to be clamped and opened; the measuring module bears the urine bag connected with the indwelling catheter through the bearing area of the measuring module and weighs the urine bag, so that urine volume data of a target patient can be sent in real time through the Bluetooth receiving and transmitting module, and the timeliness and convenience of urine volume monitoring of the patient needing the indwelling catheter for a long time are improved.

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 invention relates to the technical field of medical assistance, and discloses a venous indwelling catheter matching method and system based on artificial intelligence, and the method comprises the steps: obtaining the moisture proportion data of the upper limbs and lower limbs of a patient through a human body composition analysis device in real time, and collecting the blood drawing and thrombus measurement index data of the patient; data cleaning is carried out on the collected moisture proportion data and thrombus index data, abnormal values and noise are removed, and data to be analyzed are obtained after normalization; constructing an SVCS risk prediction model, inputting to-be-analyzed data of a patient, and outputting an SVCS risk probability value through the SVCS risk prediction model; based on the SVCS risk probability value and the clinical features of the patient, generating a catheterization part distribution suggestion through a catheterization matching model; according to the method, the water proportion data of the upper limbs and the lower limbs of the patient and the thrombus indexes are combined, the patient can be comprehensively and accurately evaluated before catheterization, whether the patient is suitable for upper body catheterization or not is judged in advance, and the catheterization safety and effectiveness are improved.

The utility model discloses a nasal cavity indwelling catheter fixing device which comprises an adhesive tape layer, an oil absorption layer is arranged on a part of the position of the pasting side of the adhesive tape layer, and the oil absorption layer and the adhesive tape layer are both used for being attached to a nose wing. The lip fixing layer is connected with the adhesive tape layer, and the sticking side of the lip fixing layer is used for being attached to the lip; the limiting piece is arranged on the non-sticking side of the lip fixing layer and used for limiting the installation direction of the nasal cavity indwelling catheter so that the nasal cavity indwelling catheter can directly face the nasal cavity. According to the nasal cavity indwelling catheter fixing device, the nasal cavity indwelling catheter can be right opposite to the nasal cavity, nasal cavity pressure sores are avoided, discomfort of a patient is relieved, fixation of the nasal cavity indwelling catheter is not affected when oil flows out of the nose wing, the situation that the nasal cavity indwelling catheter slips off is avoided, and the workload of medical staff is reduced.

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.

The utility model relates to the field of indwelling needles, and discloses an indwelling needle protective sleeve which comprises a protective sleeve body, a thumb hole is formed in the surface of the protective sleeve body, the distance between the thumb hole and the front end of the protective sleeve body is 2 cm, the width of the thumb hole is 0.2 cm, two penetrating openings are formed in the top face of the protective sleeve body, and the two penetrating openings are communicated with the thumb hole. And a fixing lacing is inserted into the penetrating opening in a sliding manner. According to the protective sleeve, a medical worker can sleeve a puncture point of an arm of a patient with the protective sleeve, namely, the puncture point can be protected in the protective sleeve, and then the medical worker can adjust the position of the indwelling tube on the protective sleeve, so that the indwelling tube is located between the two penetrating openings; and then the medical worker fixes the indwelling tube on the protective sleeve by using the fixing lacing, so that the protection strength on the indwelling tube is increased.

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.