287 results about "Intravenous Catheters" patented technology

A delivery device for delivering an instrument through an intravenous catheter may include a housing, a rotary element disposed within the housing, and an instrument. In some embodiments, the rotary element may include a groove, which may extend around at least a portion of the circumference of the rotary element. In some embodiments, the instrument may be disposed within the groove and / or between the rotary element and the housing. In some embodiments, in response to rotation of the rotary element with respect to the housing, the instrument may be advanced distally through an outlet of the housing. In some embodiments, the instrument may include a guidewire, a probe, blood draw tubing, or a light tube.

The utility model discloses a negative pressure suction device for taking a dislocated intraocular lens. The negative pressure suction device mainly comprises a suction catheter, a catheter seat, a butt joint seat, an extension tube, a negative pressure generation device and a negative pressure control device, wherein the combined structure of the suction catheter and the catheter seat can be realized by directly adopting a 22G venous indwelling needle catheter, the combined structure of the suction catheter and the catheter seat is connected to the extension tube through the butt joint seat, the combined structure of the negative pressure generation device and the negative pressure control device can be realized by directly adopting an ultrasonic emulsification and vitreous body cutting machine and a matched pedal controller, and the extension tube is in butt joint with a negative pressure port of the extension tube. The negative pressure is adjusted through the pedal controller, the intraocular lens dislocated to the vitreous cavity is attracted to the pupil area, and damage to the retina in an operation is avoided. The device has the advantages of simplicity and convenience in operation, controllable negative pressure, small trauma and the like, is suitable for minimally invasive extraction or reduction of a dislocated intraocular lens in clinic, and is wide in adaptability.

A catheter system and method of introducing an intravenous catheter into a patient includes a syringe, an access needle, a pliable catheter, and a guidewire. The syringe has a first chamber and a distal syringe end portion, which defines a conduit distally extending to a distal syringe opening such that the conduit fluidly connects the first chamber to the distal syringe opening. The access needle defines a needle lumen longitudinally extending therethrough and is secured relative to the distal syringe end portion. The pliable catheter is releasably secured relative to the access needle. The guidewire distally extends through the conduit toward the distal syringe opening and is configured to selectively move through the conduit, the distal syringe opening, and along the needle lumen to thereby guide movement of the pliable catheter relative to the access needle for introducing the pliable catheter into the patient.

An IV catheter device can include or being configured to employ a probe assembly having an integrated fluid flushing mechanism. The probe assembly can be configured in a variety of ways to cause flushing fluid to be injected through a fluid permeable structure of the probe as the probe is advanced distally from a catheter. In this way, the fluid permeable structure can be kept clear of any occlusion that may otherwise form. With the probe extending distally from the catheter, a blood sample may be collected.

A method for accessing a blood vessel using a catheter insertion device. The catheter insertion device includes a housing, a needle, a catheter, a guidewire, and a thumbwheel. The thumbwheel is rotatably fastened at a front end of the housing and accessible through an opening in the housing. The guidewire is coupled to the thumbwheel such that an axis of rotation of the thumbwheel is perpendicular to the guidewire and rotation of the thumbwheel advances the guidewire through the lumen of the needle. The method includes preparing the catheter insertion device, inserting a tip of the needle and distal end of the catheter into a blood vessel, advancing the guidewire out of the lumen of the needle into the blood vessel by holding the housing and rotating the thumbwheel, furthering the distal end of the catheter over the guidewire, and removing the needle and the guidewire from the catheter.

An intravenous catheter assembly comprising: a catheter tube; a catheter hub having a distal end and a proximal end, wherein the distal end is joined to the catheter tube and the proximal end defines a housing having inner space; a needle extending through the catheter hub and the catheter tube and defining an axial direction, wherein the needle has opposite proximal and distal ends, the distal end forming a needle tip; a needle hub attached to the proximal end of the needle; a needle guard slidably arranged on the needle, wherein the needle guard is movably retained in the housing of the catheter hub; a valve provided in the inner space in the catheter hub to prevent foreign contamination from entering the catheter hub; and a disc that is arranged proximal or distal to the valve or that is joint or linked to the valve.

The utility model relates to the technical field of venous indwelling needles, and discloses a venous indwelling needle assembly with a soft needle core, which comprises a positive pressure connector, a connector is fixedly connected to one side wall of the positive pressure connector, and an infusion extension tube is fixedly connected to the bottom end of the positive pressure connector. The closed tube can ensure that the soft needle core body is in a sterile state when being pulled out and inserted in, a medical worker communicates the infusion extension tube with the sleeve, puncture liquid medicine or blood is prevented from flowing into the closed tube, the puncture hard needle core is pulled out and discarded after blood return is found, and the liquid medicine in the infusion extension tube enters the blood through the sleeve. When the venous indwelling needle is used, the soft needle core body can be used for blocking and filling the cannula, blood is prevented from flowing back into the indwelling needle during the indwelling period of the venous indwelling needle, thrombus is prevented, and the cannula can be prevented from being blocked due to the fact that the cannula is pressed and collapsed during the indwelling period.

The invention discloses a venous catheter and a preparation method thereof. The antibacterial nano-metal particles are used for improving the antibacterial property of a polyurethane heparinized coating in the prior art, the copper nano-metal particles, the silver nano-metal particles and the zinc nano-metal particles are selected as antibacterial agents, copper and silver can endow the coating with the good antibacterial property, but the coating is not friendly to the biocompatibility of materials, and therefore the antibacterial property of the polyurethane heparinized coating is improved. And a small amount of zinc can improve the antibacterial property of the material and maintain good biocompatibility at the same time, so that the material meets the use requirements of medical materials.

The utility model relates to the technical field of medical instruments, and discloses a venous indwelling needle capable of preventing hematogenous infection, which comprises an indwelling needle body, protective assemblies are arranged on the surface and the side face of the indwelling needle body, and each protective assembly comprises a connecting ring arranged on the side face of the indwelling needle body, the venous indwelling needle comprises an indwelling needle body, a connecting ring is arranged in the indwelling needle body, a protective tube is fixed to the right end of the connecting ring, a clamping groove is formed in the surface of a shell of the indwelling needle body, a sliding groove is formed in the inner side of the connecting ring, a clamping block is slidably connected to the inner wall of the sliding groove, and a spring is fixed to the surface of the clamping block. The connecting ring and the protective tube are connected with the remaining needle body in an inserted mode, when the surface of the connecting ring abuts against the positioning plate, the connecting ring is rotated forwards, and the clamping block and the clamping groove are parallel in position, the spring enables the clamping block to enter the clamping groove, the remaining needle body, the connecting ring and the protective tube are stabilized, and infection caused by falling can be avoided.

The utility model provides a blood return prevention device for a venous indwelling needle, and relates to the field of medical equipment. The blood return prevention device for the venous indwelling needle comprises a wrist strap, a support is fixed to the wrist strap, protection plates are arranged on the front side and the rear side of the wrist strap, a cavity is hinged to the support, the upper end of the cavity is open, two arc-shaped grooves communicated with the interior of the cavity are formed in the bottom face of the cavity, a branch pipe is fixed to the bottom end of the interior of the cavity, and a conical plug elastically slides on the branch pipe. A sealing plate elastically slides at the bottom of the branch pipe, the sealing plate is located outside the cavity, the conical plug makes contact with the top of the cavity and seals the interior of the cavity when not subjected to external force, the sealing plate is attached to the bottom of the cavity and seals the arc-shaped groove, an inner threaded pipe concentric with the cavity is fixed to the top of the cavity, and an outer threaded pipe is arranged above the cavity. According to the blood return prevention device for the venous indwelling needle, the cavity, the tip cone, the wrist strap and the conical plug are arranged, the whole cavity can be folded into a protection plate of the wrist strap, safety and convenience are achieved, and normal life is not affected.

The utility model discloses a blood return prevention monitoring device for a PICC (Peripherally Inserted Central Catheter), and belongs to the technical field of PICC. Comprising a blocking catheter, the two ends of the blocking catheter are fixedly connected with an injection connecting pipe and a catheter connecting pipe respectively, the injection connecting pipe is used for being connected with an injector, the catheter connecting pipe is used for being connected with a venous indwelling catheter, a one-way valve structure is arranged in the blocking catheter, and when blood returns to the venous indwelling catheter, reverse pressure exists in the catheter, and the blood returns to the catheter. A blocking ball is pushed by resistance of a second spring to seal an injection connecting pipe, injection one-way conduction and blood return blocking effects are formed, a piston block extrudes a first spring along an L-shaped cavity due to reverse pressure in a catheter during blood return, a push rod is forced to push a resistor block to move along a resistor disc, the actual length of the two cables electrically connected with the resistor disc is reduced, and the service life of the two cables is prolonged. The resistance monitor can monitor the blood return phenomenon of the venous indwelling catheter, and can send out a blood return alarm instruction in time to remind medical staff to deal with the blood return phenomenon in time.

A catheter assembly may include a catheter, catheter adapter, needle, needle guard, and housing. The housing may be coupled to the needle guard and disposed within a lumen of the catheter adapter. The needle guard may include first and second resilient arms, which may include first and second curved portions, respectively. When the needle is in a ready position, the first and second curved portions may be urged by a shaft of the needle into retaining contact with an inner wall of the catheter adapter. When the needle is in the retracted position, the shaft may no longer bias the first and second resilient arms outwardly such that the retaining contact between the first and second curved portions and the catheter adapter is released, and the housing and the needle guard enclose a distal tip of the needle.

The utility model relates to the technical field of medical assistance, in particular to a child venous indwelling needle fixing sleeve which comprises a glove body, a bandage is arranged on the wrist portion of the lower end of the glove body, a first hook-and-loop fastener hook face is fixedly connected to the left side of the rear end face of the bandage, and a first hook-and-loop fastener loop face is fixedly connected to the right side of the front end face of the bandage. An opening is formed in the front end face of the glove body, the left side and the right side of the opening are each fixedly connected with a second hook-and-loop fastener loop face, after the remaining needle is implanted into the hand of a child patient, the transparent film dressing is attached to the back of the hand to fix the remaining needle, and then the glove body is worn on the hand. The second Velcro hook surface on the transparent film dressing is fixedly adhered to the second Velcro loop surface on the glove body, and then the first Velcro hook surface and the first Velcro loop surface at the two ends of the bandage are fixedly adhered, so that the glove body is fixed to the hand, and compared with an elastic bandage, a child patient feels more comfortable; and moreover, the observation of puncture points and film pasting conditions is not influenced.

The invention discloses a method for constructing a lumbar spinal stenosis animal model, which comprises the following steps of: fixing an experimental rabbit at a prone position, and then forming a 2-3cm incision in the back side of the waist along the longitudinal direction so as to completely expose an intervertebral plate window between a first lumbar vertebra and a second lumbar vertebra; a disposable venous indwelling needle is used for puncturing the ligamentum flavum at the interlaminal window and then puncturing the disposable venous indwelling needle into the spinal canal, and then a metal needle core of the venous indwelling needle is pulled out, so that the soft catheter part of the venous indwelling needle is indwelled in the spinal canal; uniformly mixing PMMA bone cement powder and liquid to prepare fluid bone cement, extracting the bone cement by using an injector, slowly injecting the bone cement into the spinal canal, and removing the soft catheter after injection is completed; the injected bone cement is adhered to the inner wall of the spinal canal after being solidified, so that the inner diameter and the volume of the spinal canal are reduced in physical space, compression on spinal nerves is formed, and the animal model with lumbar spinal stenosis is obtained. The problem that in the preparation process of an animal model, nerves are prone to being damaged, and research test requirements cannot be met is solved.

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.

An intravenous catheter device may include a guidewire for actively repositioning the catheter tip. A guidewire assembly may be configured to enable a clinician to actively reposition the catheter tip by moving proximal ends of segments of the guidewire. By repositioning the catheter tip, the guidewire assembly may facilitate the collection of a blood sample or the injection of a fluid through the catheter even in instances when the catheter tip has become occluded.

A probe delivery device can include a probe delivery mechanism that facilitates advancing a probe through an IV catheter. The probe delivery mechanism can be housed within a compartment of the probe delivery device and can include a probe that extends from the compartment into a fluid pathway formed within the probe delivery device. A portion of the probe delivery mechanism can extend out from the housing to enable a clinician to advance and retract the probe. The probe delivery device may include a vacuum tube receiver or a connector to enable a blood draw or fluid injection to be performed using the probe delivery device.

This invention discloses an automated assembly device for intravenous indwelling needles, comprising a needleless positive pressure connector delivery mechanism, a connecting tube delivery mechanism, and a needle assembly mechanism. The connecting tube delivery mechanism is located between the needleless positive pressure connector delivery mechanism and the needle assembly mechanism. Glue application mechanisms are provided on both sides of the connecting tube delivery mechanism. This facilitates automated processing of intravenous indwelling needles, thereby improving processing efficiency, reducing the labor intensity of workers, and ensuring aseptic processing of the indwelling needles.

The utility model belongs to the field of venous catheters, and provides an assembled venous catheter device which comprises a first communicating pipe and a second communicating pipe, the second communicating pipe comprises a cannula fixedly communicated with one end of the second communicating pipe, and the first communicating pipe is provided with a limiting assembly used for limiting the first communicating pipe on the second communicating pipe. A dredging assembly used for extruding the second communicating pipe is arranged on the surface of the second communicating pipe. According to the central venous catheter, the torsional spring can be driven to rotate by pinching the two rotating rods, so that the clamping blocks can be tilted, after the second communicating pipe is installed, the two rotating rods are loosened, the torsional spring is reset, the two clamping blocks are clamped in the two clamping grooves respectively, the effect of fixing the position of the second communicating pipe is achieved, and compared with an existing central venous catheter, the central venous catheter is convenient to use. According to the device, the effect of rapidly installing the first communicating pipe and the second communicating pipe can be achieved, the first communicating pipe and the second communicating pipe which are connected in an inserted mode can be limited through the clamping blocks and the clamping grooves, and the connecting stability of the first communicating pipe and the second communicating pipe is improved.

The utility model belongs to the technical field of venous catheter sealing tools, and particularly relates to a central venous catheter sealing auxiliary device which comprises an insertion tube, the top of the insertion tube is connected with a first connecting tube and a second connecting tube in a penetrating mode, and a second baffle ring is fixed to the outer wall of the upper end of the first connecting tube. And a third baffle ring is fixed to the outer wall of the upper end of the first connecting pipe, the outer side of the upper end of the first connecting pipe is sleeved with a first pipe sealing sleeve, and the first pipe sealing sleeve comprises a sleeve, a supporting hopper, a plugging ball and a connecting strip. The supporting hopper is arranged on the inner wall of the sleeve and located above the end of the first connecting pipe, the plugging ball is arranged above the supporting hopper, the plugging ball is plugged in the hole in the top face of the supporting hopper under the supporting of the connecting strip, plugging of the first connecting pipe below is achieved, and when medical staff need to conduct infusion or liquid extraction, the sleeve can slide downwards, so that the medical staff can conduct infusion or liquid extraction conveniently. And the end of the first connecting pipe penetrates through the top of the supporting hopper and then jacks the plugging ball open, so that communication with an external pipeline is facilitated, and sliding operation is convenient.

Articles and / or integrated articles comprising a body portion (e.g., a catheter) and a component (e.g., a cuff) physically integrated with the body portion are generally provided. For example, materials, methods, and uses are set forth herein for forming a body portion comprising a first material physically integrated with a component comprising a second material, same or different, than the first material. The disclosed compositions and devices may be useful for administration to a subject (e.g., a patient). Advantageously, the compositions and / or devices described herein may be substantially non-thrombogenic, lubricious, and / or biocompatible. In some embodiments, the devices described herein may be useful for the delivery of a biologically active agent (e.g., a therapeutic agent such as a drug) to a subject. Methods for forming such compositions and / or devices are also provided.

A catheter assembly and / or an introducer may include one or more features configured to guide a probe and / or a catheter distally through a septum. The catheter assembly may include a catheter adapter and the septum. The catheter adapter may include a distal end, a proximal end, and a lumen extending therebetween. In some embodiments, the septum may be disposed within the lumen. The septum may include a proximal surface that is tapered inwardly in a distal direction such that the proximal surface of the septum is configured to guide the probe and / or the catheter distally through the septum. The catheter assembly may be configured to receive an introducer, which may include an introducer element. A proximal end of the introducer element may include another proximal surface that is tapered inwardly in the distal direction such that the other proximal surface is configured to guide the probe or the catheter distally through the septum.

The invention discloses an intelligent recommendation system for peripheral venous indwelling needle model selection. The intelligent recommendation system comprises an input module, a decision module and an output module. The input module is used for inputting decision parameters; the decision-making module is in signal connection with the input module, and the decision-making module is used for inputting the decision-making parameters into a pre-stored decision-making model, making a decision and generating a decision-making result matched with the decision-making parameters; and the output module is in signal connection with the decision-making module, and the output module is used for outputting the decision-making result. According to the method, the problem of inaccurate evaluation caused by visual experience judgment based on medical staff can be avoided, and then adverse medical events such as leakage, phlebitis and catheter blockage are reduced.

The utility model relates to the related technical field of pediatric venous indwelling needle fixing, in particular to a pediatric venous indwelling needle fixing device which comprises elastic soft cotton wide rubber and an artificially-cut stoma formed in the elastic soft cotton wide rubber, a low-sensitivity medical pressure-sensitive adhesive film and an anti-sensitivity assembly are fixedly adhered to the lower portion of the elastic soft cotton wide rubber, and the anti-sensitivity assembly is fixedly adhered to the lower portion of the elastic soft cotton wide rubber. The elastic soft cotton is arranged on the elastic soft cotton wide rubber; the puncture point exposure opening cutting assembly is arranged on the artificially cut stoma, is adhered to the sensitivity prevention assembly, and is used for fixing a venous indwelling needle on the puncture point exposure opening cutting assembly to keep the puncture point exposure opening cutting assembly in a transparent state; according to the medical bandage, the elastic soft cotton wide adhesive and the low-sensitivity medical pressure-sensitive adhesive film are combined, the medical bandage is comfortable, breathable, good in elasticity and low in sensitivity, and the elastic soft cotton wide adhesive and the low-sensitivity medical pressure-sensitive adhesive film are subjected to bandage edge curling or loosening, so that the removal rate of an indwelling needle is low.

The present application relates to the technical fields of intravenous indwelling needle, especially to the positive pressure type intravenous indwelling needle assembly, comprising a needle structure, an indwelling hose is connected to one side of the needle structure, characterized in that: a first anti-reflux pre-pressing unit is connected to the liquid inlet end of the indwelling hose, one side of the first anti-reflux pre-pressing unit is connected to an infusion connection unit, the infusion connection unit is connected to the infusion tube of an external infusion device and delivers the liquid medicine into the human body through the indwelling hose, a second anti-reflux spinning unit is installed at the rear end of the needle structure, and a third tube sealing anti-reflux unit is installed on the indwelling hose. The positive pressure type intravenous indwelling needle assembly adopts the anti-reflux mode of positive pressure to effectively prevent the blood from flowing back to the inside of the needle structure and the indwelling hose by using the positive pressure after the infusion tube is pulled out, effectively reduces the thrombosis problem caused by blood reflux, and is safer and more reliable in use.

A catheter lock system includes a clamshell housing comprising a body and a cover; one or more interlocking tabs of the body having a hook feature; compatible interlocking tabs of the cover configured to releasably engage with the interlocking tabs of the body; a key with one or more protrusions arranged at two different angles; one or more lock disc cams including a cam feature; wherein a rotation of the key is operable to cause the interlocking tabs of the body to release from the compatible interlocking tabs of the cover using each of the one or more protrusions of the key.

The utility model discloses a venous indwelling needle, and belongs to the technical field of medical instruments. The venous indwelling needle comprises a venous indwelling needle body with a three-way pipe and further comprises a water injection pipe installed on a three-way pipe body, the projection of the axis of the water injection pipe and the projection of the axis of the three-way pipe body on the same plane have at least one intersection point, and the length of the water injection pipe is larger than or equal to the length of the three-way pipe body. A water outlet hole is formed in the water injection pipe; according to the venous indwelling needle, the water injection pipe is installed on the venous indwelling needle body, a certain amount of normal saline can be injected into the water injection pipe through an injector when the needle is pulled up, the normal saline flows around through the water outlet holes, the space between the pasting film and the skin can be filled with liquid, the pasting film is rapidly separated from the skin, and therefore the pain of a patient is relieved.

The utility model relates to a peripheral vein indwelling needle which comprises a puncture needle assembly and an indwelling needle seat, the indwelling needle seat is of a tubular structure with two open ends, a sealing plug is installed in one end of the indwelling needle seat, the other end of the indwelling needle seat is fixedly communicated with an indwelling catheter, and the puncture needle assembly comprises a puncture needle seat. The puncture needle seat is located outside the end, away from the indwelling catheter, of the indwelling needle seat and is of a transparent tubular structure, one end of the puncture needle seat is open and provided with a detachable sealing cap, the other end of the puncture needle seat is closed, and a blood return cavity is formed between the other end of the puncture needle seat and the sealing cap. The closed end of the puncture needle base is fixedly connected with a puncture needle communicated with the interior of the blood return cavity, one end of the puncture needle is a tip end, the tip end of the puncture needle sequentially penetrates through the sealing plug and the indwelling catheter and then is located outside the indwelling catheter, and the puncture needle is in sliding connection with the sealing plug and the indwelling catheter. According to the indwelling needle, the time for medical staff to judge whether the indwelling needle is punctured into the venous blood tube of a patient or not can be shortened, so that the working efficiency of the medical staff is improved.

This utility model discloses a device for fixing and preventing dislodgement of intravenous catheters in children, specifically involving an infusion tray. The tray includes a tray with a centrally located shallow groove filled with gas. The gas, when inflated, consists of an arc-shaped dome and multiple equidistant connecting posts positioned on the dome. Half of the connecting posts are connected to the inner wall of one side of the shallow groove, while the other half are attached to the side of the tray via Velcro. This utility model has a simple structure and is easy to operate. It can cover the area where the indwelling needle is fixed in the arm, preventing it from being scraped and dislodged.

An integrated safety intravenous catheter system having a port for attachment of a blood collection device is provided. A catheter system is provided that includes a catheter and a first catheter adapter having an adapter body and adapter wings. The catheter body includes a distal port, a proximal port, and a side port thereon, where the catheter proximal end is secured to the distal port, and the side port includes a Luer connector. The adapter wings are joined to the adapter body and include a first flexible wing and a second flexible wing configured to contact each other when a pinch force is applied thereto. An extension tube is connected to the proximal port, and a second catheter adapter is connected to a proximal end of the extension tube. A blood extraction device is coupled to the side port and includes a flow tube configured to project distally from the blood extraction device, through the first catheter adapter and into the catheter to perform blood extraction.