26 results about "Intravenous needles" patented technology

A monitoring device of a dialysis machine and a method for detecting a venous needle disconnection via venous pressure monitoring based on a threshold value setting. The device includes a button, preferably arranged on a screen of the dialysis machine. The button is configured, upon actuation, to set a lower threshold value and an upper threshold value depending on an actual pressure and to detect an incremental decrease in the venous pressure.

The utility model relates to the technical field of intravenous needle wing production, in particular to intravenous needle wing production equipment, which overcomes the defects of intravenous needle wing production in the prior art and comprises a box body, a first motor is fixedly connected to one side of the box body, a second rotating rod is arranged on one side of the first motor, one end of the second rotating rod is fixedly connected with a bottom plate, and the other end of the second rotating rod is fixedly connected with the bottom plate. The outer ring of the bottom plate is rotatably connected with a crown gear, the friction force between the crown gear and the bottom plate is large, one side of the bottom plate is fixedly connected with a pair of fixing plates, one sides of the pair of fixing plates are fixedly connected with a sleeve, one side in the sleeve is rotatably connected with a bevel gear, and the bevel gear is in meshed connection with the crown gear; one end of the bevel gear is fixedly connected with a screw rod, the screw rod penetrates through the sleeve and the fixing plate and is in clearance fit with the interior of the sleeve and the fixing plate, and the surface of the screw rod is in threaded connection with a pressing plate.

The invention discloses a puncture needle for improving the safety and isolation effect of artificial ascites puncture. The puncture needle comprises a hose, a rubber plug, a communicating pipe, a needle body, a needle holding handle and a butterfly wing fixator. The hose is of a venous indwelling needle structure, and the rubber plug is fixedly connected to one end of the hose. The communicating pipe is communicated with the other end of the hose to form a medicine conveying channel. The needle body comprises a steel needle and a soft sleeve wrapping the periphery of the steel needle, the needle holding handle is detachably connected with the needle body, and an isolation plug is arranged in the needle holding handle. And the isolation plug is pulled out together with the steel needle when the needle holding handle is pulled out so as to cover and protect the steel needle. The butterfly wing fixator is arranged at the joint of the needle holding handle and the needle body and comprises a butterfly wing piece and a hydrophilic gel pad fixed to the contact face of the butterfly wing piece and the human skin. The puncture safety in liver cancer ablation treatment is remarkably improved, the risks of mistaken puncture and inaccurate puncture depth are reduced, damage to surrounding important organs and blood vessels is reduced, and the safety and effectiveness of treatment are improved.

The utility model relates to a disposable arteriovenous blood taking needle which comprises a transfer block, an arterial needle head, a venous needle head, a blood transfusion tube, a blood outlet tube and embolism blocks, the embolism blocks are sleeved on the outer side faces of the arterial needle head and the venous needle head, the arterial needle head and the venous needle head are jointly connected with the blood transfusion tube, and the transfer block is jointly connected with the blood transfusion tube and the blood outlet tube. Under the combined action of an expansion piece, a stress plate, a partition ring, a partition piece and a butt joint block in the transfer block, the blood transfusion tube and the blood outlet tube in the transfer block can be connected only once, and then irreversible damage can be generated at the joint of the blood transfusion tube and the blood outlet tube after use; meanwhile, a deformation block, a rubber plug, a solid film and a limiting opening are arranged in the embolism block, so that the artery needle head and the vein needle head can deform, the needle heads are blocked, and repeated use of the blood taking needle can be effectively prevented.

The invention relates to the technical field of medical instruments, in particular to a medical medicine quantitative infusion device which comprises an intravenous needle, a Luer taper liquid medicine filter, a bottle stopper puncture outfit, a Murphy type drip chamber, an infusion hose and a flow rate adjusting mechanism. An automatic liquid stopping mechanism is arranged in the Murphy type drip chamber and comprises a cylindrical shell fixedly connected to the inner bottom wall of the Murphy type drip chamber. By arranging the flow speed adjusting mechanism, the abutting arc block can be driven to stably move along the guide rod by rotating a flow speed adjusting knob, an infusion hose is accurately extruded to change the diameter of a pipeline, fine adjustment of the infusion flow speed of liquid medicine is achieved, and compared with a traditional speed regulator, the self-locking characteristic is better; the problem that the infusion speed is too high or too low due to poor stability of a speed regulator is effectively solved, the infusion speed can be flexibly set according to the medicine type, the illness state of a patient and the tolerance degree, the accuracy of the medicine infusion dosage and speed is guaranteed, and the medicine treatment effect is improved.

The utility model relates to the field of medical instruments. A novel puncture-preventing infusion apparatus comprises a bottle plug puncture head 3 located at one end of a hose 7 and used for being inserted into a bottle plug 2 of a liquid storage bottle 1 and a vein needle 11 located at the other end of the hose 7, the bottle plug puncture head 3 is connected with the hose 7 through a first connecting device 4, and the vein needle 11 is connected with the hose 7 through a second connecting device 10. And the first connecting device 4 and the second connecting device 10 are detachable connecting devices. The middle of the outer wall of the middle of the puncture tube of the puncture head is thick and the two ends of the outer wall of the puncture tube are thin, namely the outer diameter of the middle of the puncture tube is larger than that of the two ends of the puncture tube, in the using process, the large-outer-diameter part of the middle of the puncture tube is clamped by a bottle plug, and the situation that the puncture head falls off is avoided.

The invention relates to a disposable sensitive blood return hose vein needle which comprises a hose vein needle body and a sensitive blood return device, and the hose vein needle body is composed of a vein needle body, a transfusion tee joint, a needle seat, a hose and a liquid penetrating hole. According to the technical scheme, when infusion treatment is carried out on a patient, the metal vein needle for puncturing can be pulled out, the front portion of the hose is reserved in the vein of the patient, the rear portion of the hose is reserved on the arm of the patient, and therefore the situation that the metal vein needle is reserved in the vein of the patient, and the needle point of the vein needle is prone to hurting the blood vessel can be greatly reduced; meanwhile, the flexible pipe intravenous needle can be effectively matched with a sensitive blood return device, blood return information brought by the sensitive blood return device can be clearly and conveniently seen through the liquid penetrating hole in the intravenous needle, and the judgment rate that the flexible pipe intravenous needle correctly penetrates into the blood vessel of the patient is effectively increased.

Systems and methods for autonomous intravenous needle insertion are disclosed herein. In an embodiment, a system for autonomous intravenous insertion include a robot arm, one or more sensors pivotally attached to the robot arm for gathering information about potential insertion sites in a subject arm, a medical device pivotally attached to the robot arm, and a controller in communication with the sensors and the robot arm, wherein the controller receives the information from the sensors about potential insertion sites, and the controller selects a target insertion site and directs the robot arm to insert the medical device into the target insertion site.

The application discloses a full-automatic processing production line for a venous needle, which comprises a hose conveying mechanism, a first glue applying mechanism, a second glue applying mechanism, a needle head butt joint mechanism, a butt joint head butt joint mechanism and a cap mechanism, wherein the hose conveying mechanism is sequentially connected with the first glue applying mechanism, the needle head butt joint mechanism, the second glue applying mechanism, the butt joint head butt joint mechanism and the cap mechanism, and the above mechanisms are all installed on a table top; automatic assembly of the venous needle is realized, a cover is sleeved on the butt joint head of the venous needle, and meanwhile, the processing efficiency of the venous needle is improved.

The invention relates to the technical field of emergency infusion equipment, in particular to an infusion bottle infusion device and system, and aims to solve the problems that a patient needs to hold an infusion bottle or use a movable infusion support during infusion, inconvenience is caused, and safety risks such as blood backflow and falling down are caused. The device comprises a drip cup with an elastic diaphragm and a big arm fixing assembly, wherein the fixing assembly comprises a fixing belt, an electrical box and a fixing frame, and a micro air pump, an air pressure valve, a control chip and a corresponding sensor are arranged in the electrical box; the system processes sensor data through an algorithm and adjusts the air pressure of an air chamber, so that the liquid outlet pressure of a vein needle is not lower than the sum of the venous pressure of a patient and the safety margin all the time, and meanwhile, the dripping speed is kept stable. The infusion apparatus is portable, light, suitable for narrow spaces such as toilets, capable of preventing blood backflow, accurate in dripping speed and suitable for emergency treatment and common ward scenes, and the moving freedom degree of a patient and infusion safety are improved.

The utility model discloses a positive pressure type venous indwelling needle which comprises a puncture needle head, a catheter and a three-way connector, the puncture needle head is connected with the three-way connector through the catheter, sterile protective films are attached to the puncture needle head and the catheter, and the three-way connector is provided with two binding type fixing assemblies. The two binding type fixing assemblies are installed at the upper end and the lower end of the three-way connector correspondingly, each binding type fixing assembly comprises a first sleeve, a winding rod, a binding belt, a second sleeve and an adhesion type winding rod, each first sleeve is fixed to one side of the three-way connector, and a leading-out opening is formed in the lower end of each first sleeve; the binding belt is wound on the winding rod, the end of the binding belt is led out of the leading-out opening and connected with the adhesion type winding rod, and the adhesion type winding rod is rotationally arranged in the second sleeve. According to the binding type fixing assembly designed by the utility model, the three-way connector of the venous indwelling needle can be quickly and efficiently fixed, and the stability of the venous indwelling needle in the using process is improved.

An intravenous needle insertion device is described. The device includes a body having a front end, a back end, a bottom surface and a top surface sloping downward toward the front end. The device further includes a vein trough recessed within the bottom surface of the body, a needle trough recessed within the top surface of the body, a puncture window at the front end of the body, where the vein trough and the needle trough both lead into the puncture window.

The disposable sensitive blood return vacuum blood taking needle comprises a vein needle, a needle handle and a catheter, and further comprises a sensitive blood return device, a blood taking needle and a cup-shaped blood taking needle waiting device, the blood taking needle is directly fixed to the output end of the sensitive blood return device, and the blood taking needle waiting device is arranged on the blood taking needle in a sleeved mode. The rear portion of the blood taking needle is fixed to the bottom of the rear end of the blood taking needle waiting device, and the vein needle is connected with the input end of the sensitive blood returning device through a catheter. According to the technical scheme, the blood sampling flow is increased, the blood pressure resistance is reduced, and the sensing surface of the blood return cap is enlarged, so that the response time of blood return of the blood vessel and upward bulging of the blood return cap after the vein needle is correctly inserted into the blood vessel is shortened, and medical staff safely operate the vein needle to be inserted into the blood vessel of a patient and insert a blood sampling bottle into a blood sampling needle waiting device. The blood taking needle can be safely inserted into the blood taking bottle, the vein needle protecting sleeve and the blood taking needle sealing latex cap can protect the blood taking needle from being polluted, and the blood taking needle waiting device can prevent medical staff from being scratched under rapid and busy work.

The utility model discloses an intravenous needle wing turnover mechanism of an infusion apparatus packaging machine. Two output ends of a vertical pulling mechanism, which are provided with a clamping cylinder, are respectively provided with an L-shaped tube pulling claw. The fixed sliding block slides on the sliding rail, the synchronous belt fixing plate and the synchronous belt pressing belt are fixed to the synchronous belt of the automatic production line, the synchronous belt on the automatic production line drives the hanging plate to move, the output end of the first air cylinder stretches out, and the longitudinal adjusting mechanism is driven to conduct longitudinal adjustment together. When the vertical pulling mechanism pulls upwards, the vertical pulling mechanism pulls in the vertical direction, the two output ends of the clamping air cylinder are opened, the two tube pulling claws are opened, the two guiding finger clamps are opened, an infusion tube of the vein needle is framed, and the vein needle wings are located on the upper portions of the two guiding finger clamps; under the action of the arc-shaped slopes of the two guide finger clamps, the vein needle wing is rotated to the bottom ends of the two arc-shaped slopes, and the vein needle wing is turned over to the designated direction.

The utility model discloses a blood taking needle assembling machine material shortage detection device which comprises a positioning tool arranged on a conveying mechanism and a fixing frame arranged above the conveying mechanism in a striding mode, and a plurality of positioning grooves are transversely formed in the upper surface of the positioning tool at intervals. The positioning groove comprises an arc section matched with a needle seat of the intravenous needle and a vertical section allowing a fin of the intravenous needle to vertically extend out, and the positioning groove is used for clamping the needle seat and enabling the fin to vertically face upwards; a plurality of U-shaped groove type photoelectric sensors are arranged at the bottom of the fixing frame, the number of the U-shaped groove type photoelectric sensors is equal to that of the positioning grooves, and the U-shaped groove type photoelectric sensors and the positioning grooves are arranged in a one-to-one correspondence mode. The opening direction of each U-shaped groove type photoelectric sensor faces the corresponding positioning groove, and the light path of each U-shaped groove type photoelectric sensor intersects with the motion trail of the fin in the positioning groove. According to the utility model, the vein needle can be accurately detected, the product yield and the equipment stability are improved, and the manual intervention cost is reduced.

A system and method for identifying a disruption of a flow from an extracorporeal circuit to a patient circulatory system, such as a venous needle dislodgement or an access-bloodline separation, is based on flow rate data of the extracorporeal circuit. A patient contribution to the flow rate data can be identified as a harmonic and monitored to assess the presence of the disruption. The system can identify an inharmonic change, such as a spike, in the flow rate in the extracorporeal circuit, wherein the inharmonic change can be used alone or in conjunction with the identified harmonic to assess the existence of the disruption. The system can employ the spike in a blood flow rate as well as a spike in a dialysate flow rate fluidly connected to the extracorporeal circuit, wherein the spike can be used to identify the disruption.

The utility model discloses an intravenous needle assembling mechanism based on a finished infusion apparatus, a support frame is fixed on a step surface of a middle layer and a step surface of a top layer, the top of the support frame is provided with an assembling mechanism, the assembling mechanism comprises two assembling claws, the step surface of the top layer is fixedly connected with a clamping mechanism, and the clamping mechanism is connected with the assembling claws. The clamping mechanism comprises two clamping units. When the intravenous needle of the infusion apparatus is assembled, the intravenous needle is placed on the material placing assembly, the intravenous needle is taken through the material taking assembly, then the material taking assembly is turned over, the intravenous needle is conveyed to the assembling mechanism, and the clamping mechanism clamps a connector at the other end of the infusion apparatus. A joint of a vein needle is clamped by a tissue claw of the assembling mechanism to be inserted into the clamping mechanism, and the vein needle is rotated and tightened through the assembling mechanism, so that the infusion apparatus and the vein needle are assembled in a full-automatic manner, and the assembling efficiency is improved.

The utility model is applicable to the technical field of medical instruments, and provides a disposable precise filtering infusion apparatus, which comprises an infusion tube, a bottle stopper puncture outfit, a drip chamber and a vein needle, the upper end of the infusion tube is fixedly connected with the bottle stopper puncture outfit, and the lower end of the infusion tube is fixedly connected with the vein needle. The infusion apparatus comprises an infusion tube, a drip chamber and a flow regulator are arranged on the infusion tube in a matched mode, and the infusion apparatus is characterized in that a liquid medicine filtering bin is further arranged on the infusion tube in a matched mode, the liquid medicine filtering bin is communicated with the infusion tube, a conical hopper is fixedly connected to the inner bottom end of the liquid medicine filtering bin, and the diameter of the lower end of the conical hopper is larger than the inner diameter of the infusion tube. A plurality of filtering holes which are uniformly distributed are formed in the conical hopper, a liquid medicine filtering membrane is fixedly arranged on the inner wall of the conical hopper, a backflow pipe is fixedly connected to the side wall of the liquid medicine filtering bin, and a temporary storage bottle is fixedly connected to the other end of the backflow pipe. The filter has the advantages of effectively filtering insoluble particles and preventing the insoluble particles from blocking the filter membrane.

In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extracorporeal circuit is disclosed, the method and system comprising: establishing acoustic wave resonance in a lateral dimension of at least a portion of a tubing line associated with the extracorporeal circuit through which the fluid flows; monitoring a phase signal of the resonant acoustic wave; and identifying an occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from an expected fluid flow characteristic. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.

In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.

A venous needle dislodgment detection system for use with a blood access device during medical treatment is disclosed, comprising a medical blood access system in communication with a dislodgment sensing apparatus, the medical blood access system having a venous blood line; a first end of the venous blood line being coupled to the medical blood access system at a tubing connection point, and a second end of the venous blood line being coupled to the blood access device; the dislodgment sensing apparatus comprising a sensor positioned adjacent to the venous blood line and proximal to the tubing connection point, the dislodgment sensing apparatus being configured to generate a dislodgment signal in response to detecting a displacement force indicative of a potential dislodgment of the blood access device from the patient; and the medical blood access system being configured to automatically generate an alarm condition in response to receiving the dislodgment signal.

The invention discloses an environment-friendly degradable disposable precision filtering infusion apparatus which comprises a first infusion catheter, a filtering device and a connecting block, a puncture outfit is arranged at the liquid inlet end of the first infusion catheter, a drip chamber is arranged at one end of the interior of the first infusion catheter, and the drip chamber is in a funnel shape with the wide upper portion and the narrow lower portion; flow dividing baffles are arranged in the drip chamber in a staggered mode, a filtering device is arranged at the liquid outlet end of the first infusion catheter, a second infusion catheter is arranged on the other side of the liquid outlet end of the filtering device, connecting blocks are arranged at the two ends of the filtering device, and a flow regulator is arranged at one end in the second infusion catheter. The liquid outlet end of the second infusion catheter is connected with an intravenous needle set. According to the environment-friendly degradable disposable precision filtering infusion apparatus, all parts of the infusion apparatus are made of degradable biological materials, the infusion apparatus can be gradually degraded under the action of microorganisms in the natural environment after being used, pollution to the environment is reduced, and the concept of sustainable development is met.

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of infusion connector fixing patch, including fixed patch, one side of the fixed patch is provided with connector fixed part, for fixing infusion connector, another side of the fixed patch is provided with release paper, tear release paper from fixed patch, to be affixed on human skin with fixed patch;Wherein, the connector fixed part is at least one of adhesive member and limiting structure;The fixed patch is provided with gap part, for the catheter connected with infusion connector to pass through.The utility model can realize the integrated fixing of catheter while realizing the overall effective fixing of the infusion connector of remaining intravenous needle, to fundamentally solve the infusion safety hazard of displacement or even falling caused by extrusion, scratching of infusion connector.

The utility model relates to the technical field of intravenous needles, in particular to a rigidity detection device for an intravenous needle, which overcomes the defect of no rigidity detection in the prior art and comprises a detection ring, an upper sliding plate is slidably connected above the detection ring, and a lower sliding plate is slidably connected to the bottom of the detection ring. A telescopic pipe is arranged on the right side of the detection ring, a first sliding rod is slidably connected to the interior of the telescopic pipe, the first sliding rod is fixedly connected with the upper sliding plate, a second sliding rod is slidably connected to the interior of the telescopic pipe, the second sliding rod is fixedly connected with the lower sliding plate, and an air cylinder is arranged on the inner side of the detection ring. The rear side of the air cylinder is provided with an adapter pipe, the adapter pipe is connected with a shrinkage pipe, the left side of the air cylinder is fixedly provided with a supporting frame, the inner side of the supporting frame is connected with a sliding block in a sliding mode, and the inner side of the air cylinder is connected with an air rod in a sliding mode.

The application belongs to the technical field of medical materials, and particularly relates to an antibacterial and anticoagulant double-functional coating, a preparation method thereof and a needle head with the same, which comprises the following steps: S100, substrate material pretreatment; S200, PDPA coating preparation; S300, heparin grafting; and S400, NO loading; the antibacterial and anticoagulant double-functional coating prepared by the application has excellent antibacterial and anticoagulant functions, can be used for hemodialysis, can effectively inhibit arteriovenous needle head blockage and prevent bacterial infection, and is firmly attached and not easy to fall off.