329 results about "Catheter hub" patented technology

A hub assembly includes a mount being axially movable along a drive surface, a catheter hub having a catheter, the catheter hub removably couplable with the mount, and a fluidics connector in fluid communication with the mount and the catheter hub to provide fluid and vacuum through the connector to the catheter hub.

The invention relates to the technical field of medical instruments, in particular to a nicking instrument based on a paper-cut structure, which comprises a destressing sleeve and a catheter seat, and further comprises a pushing section, a metal tube and a hollow head, the right end of the destressing sleeve is connected with the catheter seat, the pushing section is mounted at the left end of the destressing sleeve, and the other end of the pushing section is connected with the metal tube; the pushing section and the metal tube are coaxially connected, a PTA balloon penetrates through the catheter base, the stress relieving sleeve and the pushing section and enters the metal tube after penetrating through the pushing section, the PTA balloon is embedded in the metal tube, the tail end of the metal tube is connected with a bullet-shaped hollow head, when the PTA balloon is full, the surface of the cut metal tube begins to expand, and when the surface of the cut metal tube is expanded, the surface of the cut metal tube is expanded. When the surface of the metal tube expands to a certain degree, the expansion process of the metal tube cannot be continued due to the limitation of the included angle of the rhombus, at the moment, the continuous expansion force of the PTA balloon enables the node of the cutting section to drive the connecting rod to overturn together, and the overturned connecting rod can apply circumferential force to the narrow part of the blood vessel.

A drive system for achieving supra-aortic access and neurovascular treatment site access includes a guidewire hub configured to adjust an axial position and a rotational position of a guidewire, a procedure catheter hub configured to adjust an axial position and a rotational position of a procedure catheter, a guide catheter hub configured to adjust an axial position of a guide catheter, and an access catheter hub configured to adjust an axial position and a rotational position of an access catheter, the access catheter further configured to laterally deflect a distal deflection zone of the access catheter.

A supra-aortic vessel access robotic control system includes a guidewire hub configured to adjust each of an axial position and a rotational position of a guidewire; a guide catheter hub configured to adjust a guide catheter in an axial direction; and a procedure catheter hub configured to adjust each of an axial position and a rotational position of a procedure catheter, and also to laterally deflect a distal deflection zone of the procedure catheter.

A catheter hub assembly. The catheter hub assembly includes a catheter hub body, a septum and a septum retainer, the catheter hub body having a distal end, a proximal and an internal wall defining an internal fluid passageway therebetween, the internal wall defining a transitional step within the internal fluid passageway, the septum positioned within the internal fluid passageway such that a distal end of the septum abuts up against the transitional step, the septum retainer at least partially receivable within the internal fluid passageway and having an outer wall shaped and sized to interlock with the inner wall of the catheter hub body, the outer wall including one or more lateral ribs configured to inhibit rotation of the septum retainer relative to the catheter hub body.

The nick balloon catheter comprises a catheter body, a balloon and a catheter seat, the catheter body comprises an inner tube and an outer tube, the outer tube is arranged on the outer side of the inner tube in a sleeving mode, the far end of the outer tube is connected with the near end of the balloon, and the near end of the outer tube is connected with the catheter seat; the far end of the inner tube penetrates out of the far end of the balloon, a first nicking piece and a guide wire are arranged in an inner cavity of the inner tube in a penetrating mode, and the first nicking piece comprises a first developing piece capable of developing under X rays; the inner tube comprises a nicking piece cavity and a guide wire cavity, the nicking piece cavity and the guide wire cavity extend in the length direction of the inner tube in a penetrating mode, the nicking piece cavity and the guide wire cavity are arranged in parallel, and the first nicking piece penetrates out of the far end of the inner tube through the nicking piece cavity. According to the nicking balloon catheter, the first nicking piece is arranged to cut the seriously narrow lesion position, the problem that the balloon cannot reach the seriously narrow lesion position is solved, and the application range of the nicking balloon catheter is wider.

The present invention discloses a high-precision chip-type micropump wearable precision syringe, which specifically relates to the technical field of medical devices. The present invention evacuates a hydraulic liquid supply tank to a vacuum to form a negative pressure, and then the needle tip of a liquid-filled injection needle pierces a heparin cap, so that the drug driving liquid is pressed into the hydraulic liquid supply tank and squeezes the piston of the pushing unit to move to one side. The volume of the hydraulic liquid supply tank increases, and the drug driving liquid enters the micropump unit through the micropump liquid inlet hole. Since the micropump unit swings to a fixed value each time, the drug driving liquid is accurately driven and controlled, and the injection volume is accurately controlled. The piston member in the cartridge bottle is pushed forward to quantitatively push the injection liquid, and the liquid drives the liquid, so that the infusion is accurate and reliable; the implanted spring pushes the indwelling needle catheter seat to be clamped into the convex ring cavity. Afterwards, the stainless steel needle is withdrawn, leaving only the soft indwelling needle catheter in the blood vessel. Injection is performed through the indwelling needle catheter without waiting for too long, thereby reducing the discomfort and pain caused to the patient.

The utility model relates to an extended catheter and a catheter system thereof. The utility model relates to an extended catheter and a catheter system thereof. The extended catheter comprises a catheter main body, a delivery rod and a catheter seat which are sequentially connected along the axial direction, an anchoring balloon is arranged on the outer side of the end, close to the delivery rod, of the catheter body, and the delivery rod is of a tubular structure. The delivery rod, the catheter seat and the anchoring balloon are communicated with one another; the catheter body comprises an inner-layer catheter body, a reinforcing-layer catheter body and an outer-layer catheter body which are arranged in a sleeving mode from inside to outside in the radial direction. The enhancement layer pipe body is a spiral cutting pipe layer or a stainless steel woven mesh layer or a spring layer. The extended catheter and the catheter system thereof have the advantages that the extended catheter can be used as a guiding instrument to be deeply inserted into the farther position of a blood vessel, the function of sucking thrombus and plaque can be achieved, exchange between instruments is reduced, and operation efficiency is improved.

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 method of performing a neurovascular procedure includes providing an assembly including a guidewire having a guidewire hub, an access catheter having an access catheter hub, and a guide catheter having a guide catheter hub. The method includes coupling the guidewire hub to a first hub adapter, coupling the access catheter hub to a second hub adapter, and coupling the guide catheter hub to a third hub adapter. Each of the first hub adapter, the second hub adapter and the third hub adapter is movably carried by a support table. The method includes driving the assembly in response to movement of each of the first hub adapter, the second hub adapter and the third hub adapter along the support table until the assembly is positioned to achieve supra-aortic vessel access.

A catheter insertion device is provided as an external applicator attachable to a medicine delivery device. The medicine delivery device has an internal module therein that comprises an insertion needle hub and needle, and a catheter hub and catheter. An external applicator comprises a drive and spring that drive a drive pin into the medicine delivery device to force the needle hub and catheter hub downward until the catheter hub locks in the downward position and the needle hub returns into the external applicator. An automatic release feature automatically disengaged the external applicator from the medicine delivery device when insertion is complete.

The invention provides a radial artery radiography cannula, and relates to the technical field of medical instruments, the radial artery radiography cannula comprises an inner tube and an outer cannula, the inner tube comprises an inner tube catheter seat and an inner tube body, the outer cannula comprises an outer cannula catheter seat and an outer cannula body, the inner tube catheter seat is provided with a connector part, and the connector part can be connected with the outer cannula catheter seat in a matched mode. The inner tube body penetrates into the outer tube body, the outer tube and the inner tube can be locked and matched through the connector part and the outer tube catheter base, the adaptability is good, gas embolism or thrombus is not prone to being caused, the end of the middle cavity is sealed through the locking position, blood cannot overflow, and the influence on surgical operation is avoided; the inner tube and the outer tube are synchronous when a large blood vessel on an arch is subjected to super-selection, the outer tube and the inner tube are separated after the outer tube points to a target blood vessel, super-selection is conducted towards the far end to the target blood vessel under the support of the guide wire and the inner tube, the controllability of the catheter is improved, and the super-selection difficulty is reduced.

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 a biliary tract drainage device which comprises a drainage tube, a catheter seat and a locking connector. The drainage tube comprises a tube body section and a pigtail section extending at the far end of the tube body section, the tube body section is provided with a central cavity and a plurality of peripheral cavities which extend in the length direction, and the pigtail section is provided with an inner cavity communicated with the central cavity. The near end of the catheter body section is fixedly connected with the catheter base, and the catheter base is detachably connected with the locking connector. A plurality of first drainage holes are formed in the side wall of the pigtail section, the first drainage holes are communicated with an inner cavity of the pigtail section, and when the pigtail section forms a pigtail ring, the first drainage holes are located in the inner side of the pigtail ring. A second drainage hole is formed in the side wall of the far side of the catheter body section and communicated with the central cavity. The locking connector is provided with an inner cavity extending in the length direction, and when the locking connector and the catheter base are in the assembled connection state, the inner cavity of the locking connector is at least communicated with the center cavity. According to the biliary tract drainage device, the size of the catheter connector can be reduced.

The invention provides a balloon, a balloon dilatation catheter and a stent system, and particularly provides a balloon, a balloon dilatation catheter and a stent system suitable for bifurcated vascular lesion areas. The balloon comprises a balloon body, a far-end body and a near-end body, the far-end body comprises a first cone part, the near-end body comprises a second cone part, and at least the size of the cone angle alpha 1 of the first cone part and the size of the diameter d of the balloon in the expansion state meet the following relational expression: alpha 1 = k1ld + b1; wherein k1 belongs to [11.009, 21.478], b1 belongs to [7.98, 20.8], d is more than or equal to 5 and less than or equal to 16, and d is a positive integer. The balloon dilatation catheter comprises the balloon, a pushing tube and a catheter seat. According to the balloon, the balloon dilatation catheter and the stent system, the structure of the balloon is improved and optimized, and the balloon, the balloon dilatation catheter and the stent system are simple in structure, easy to produce, capable of achieving industrialization, low in cost, easy to operate clinically and capable of accurately releasing and positioning the stent. Therefore, the positioning accuracy of the stent in a bifurcated vascular lesion area and the success rate of an operation are greatly improved.

A catheter assembly includes: an inner needle configured to puncture a living body; a catheter configured to allow the inner needle to be inserted therethrough; a catheter hub located at a proximal end of the catheter; a valve body located in an internal space of the catheter hub; an opening member located on a proximal side of the valve body, the opening member comprising: a cylindrical barrel portion, a neck portion extending from a distal end of the barrel portion, wherein a diameter of the neck portion is smaller than a diameter of the cylindrical barrel portion, and a foot portion extending to a proximal side of the barrel portion, wherein the opening member is configured to move in a distal direction to open the valve body; and a movement inhibiting mechanism that resists movement of the opening member in the distal direction via a contact portion.

A delivery device is provided with an insertion device having a retraction spring configuration for automatic insertion needle retraction. A button of the insertion device is used to insert the insertion needle and catheter, and once the insertion needle are fully inserted, a rotating engagement releases the needle hub where the springs automatically retract the insertion needle. A catheter assembly includes a catheter hub, a septum and a catheter. The catheter hub has a fluid passage separate from the insertion needle to supply a fluid to the catheter. The fluid passage can extend through a distal end of the septum, through a side portion of the catheter hub and septum, or through a side portion of the catheter hub directly to a fluid chamber formed between the septum and a distal end of the catheter hub.

The balloon catheter comprises a catheter base, a catheter body, a balloon, an indentation wire and an elastic tube, a medicine coating is arranged on the outer surface of the balloon, the near end of the catheter body is fixed in the catheter base, the balloon is arranged on the far end side of the catheter body, the near end of the elastic tube is fixed in the catheter body, and the indentation wire is arranged on the outer surface of the balloon. The far end of the elastic tube spans the balloon and then is fixed to the far end of the catheter, the nick wire can be arranged in the elastic tube, the catheter and the catheter base in a penetrating mode, and the nick wire can move relative to the elastic tube, the catheter and the catheter base. And the balloon is fully expanded to drive the elastic tube and the nick wire to deform. Through the arrangement of the nick wire and the elastic tube, the balloon not only has the excellent blood vessel dilatation performance of a nick balloon, but also has the function of preventing blood vessel restenosis of a medicine balloon. The use of instruments is reduced, the burden of an operation patient is reduced, the operation time is shortened, and the operation safety is improved.

The utility model relates to the technical field of medical apparatus and instruments, and provides a catheter device with needling prevention and distance fixing functions, which comprises a needle seat shell and a tearable seat, a needle tube is connected onto the needle seat shell, a catheter seat and a needling prevention protection module are mounted in the needle seat shell, and the tearable seat is connected with a tearable needle tube. The catheter seat is connected with a catheter matched with the needle tube, the needle tube is provided with a fixing ring matched with the anti-needling protection module, the needle seat shell is provided with a clamping groove used for fixing the catheter seat and a sliding groove used for moving the catheter seat, and the end of the needle seat shell is provided with a guide arm and a positioning arm. Through the cooperation of the fixing ring and the anti-acupuncture protection module, the needle head part is fixedly contained in the anti-acupuncture protection module when the needle tube is drawn out, the anti-acupuncture effect is achieved under the condition that passing of a guide wire is not affected, and the catheter base and the lateral branch connector for fixing the distance are of an integrated structure; and the guide arm, the positioning arm and the tearable seat can be assembled in positive and negative directions, the structure is simple, and the operation is convenient.

The flow-adjustable perfusion balloon catheter comprises a catheter body, a balloon capable of being filled and a catheter base, a push rod channel and a filling channel are arranged in the catheter body, the filling channel is communicated with an inner cavity of the balloon, and a first connector and a second connector are arranged on the catheter base. Micropores are formed in the positions, located at the near end and the far end of the balloon, of the catheter body and are the near-end micropore and the far-end micropore respectively, the near-end micropore and the far-end micropore are communicated through a blood flow channel formed in the catheter body, and a blocking piece capable of blocking the near-end micropore or the far-end micropore is arranged in the blood flow channel. A push rod is arranged in the push rod channel, and the far end of the push rod is connected with the near end of the plugging piece. Compared with the prior art, by arranging the blood flow channel, effective circulation of blood flow can still be achieved after balloon plugging in the operation, complications caused by ischemia or hypertension in the operation are avoided, the perfusion blood flow can be adjusted in time according to different patient conditions, and the success rate of the operation is increased.

The utility model discloses a vascular intervention dosing device which comprises a catheter seat. The catheter is arranged at the top end of the catheter seat and penetrates through the inner hollow structure of the catheter seat; the puncture needle is arranged in the hollow catheter, the top end of the puncture needle protrudes out of the catheter, the needle base is installed at the top end of the puncture needle, and the needle base and the outer portion of the catheter base are mutually clamped; the system further comprises; and the extension arm is arranged on the outer wall of the catheter seat in an inclined structure. The utility model discloses a vascular intervention drug delivery device. The fixing mechanism is arranged, so that the extension tube which is not fixed by an adhesive tape can be stored, when the whole device is not used, the redundant extension tube can be stored, the normal hand operation of a patient is not influenced, and the situation that a catheter falls off due to contact between the extension tube and an external object is avoided; meanwhile, when administration is needed, the device can be easily pulled out of the interior of the fixing tube, normal administration work is carried out, and the device is more practical and convenient to use.

A catheter assembly (10) comprises a catheter (20), a needle (22) having a sharp distal tip and disposed within the catheter (20), a catheter hub (30) connected to the catheter (20) having the needle (22) passing therethrough, and a housing (70) that encloses the sharp distal tip of the needle (22). An external surface of the catheter hub (30) and an internal surface of the housing (70) each include at least one of a channel member (34) and a raised portion (72) that interfit to restrict motion between the catheter hub (30) and the housing (70).

A powered catheter and / or powered catheter system is described. The catheter includes a catheter hub with one set of contact components that are configured to connect to a mating cable with a corresponding second set of contact components. The mating cable can be part of another device, such as a controller or power source.

A system for performing a neurovascular procedure includes an interventional device assembly having a guidewire having a guidewire hub, an access catheter having an access catheter hub, and a guide catheter having a guide catheter hub. The system includes a first hub adapter, a second hub adapter, a third hub adapter, and a support table, wherein each of the first hub adapter, the second hub adapter, and the third hub adapter is movably carried by the support table. The first hub adapter, the second hub adapter, and the third hub adapter are configured to move along the support table to drive the interventional device assembly until the interventional device assembly is positioned to effect supraaortic vascular access.

An intraosseous access device can include a device body, a trocar needle coupled to the device body, and an intraosseous catheter removably disposed on the trocar needle. The device body can be configured to enable manual insertion of a distal tip of the trocar needle through a skin surface of a patient to an external surface of a bone of the patient. The intraosseous catheter can include a catheter hub and a cannula slidable with respect to the catheter hub to enable adjustment of a longitudinal length of the intraosseous catheter. The intraosseous access device can further include an advancement mechanism configured to advance the trocar needle and the intraosseous catheter into an internal portion of the bone after the distal tip of the trocar needle and the intraosseous catheter have been inserted through the skin surface of the patient to the external surface of the bone of the patient.

The indwelling needle suite comprises a catheter assembly, a puncture assembly and a negative pressure assembly, and the catheter assembly comprises a catheter base, a catheter connected with the catheter base and an isolation plug arranged in the catheter base; the puncture assembly comprises a needle seat and a needle tube connected with the needle seat, the needle seat is provided with a first end and a second end, the first end of the needle seat is detachably connected with the catheter seat, and a needle tip of the needle tube penetrates through the first end of the needle seat and the isolation plug and penetrates out of the catheter; the negative pressure assembly comprises a negative pressure generator and a channel connection switch, the negative pressure generator is provided with a volume-variable inner cavity, and the channel connection switch is arranged between the negative pressure generator and the needle seat and can be used for communicating or blocking the inner cavity of the needle seat and the inner cavity of the negative pressure generator. The indwelling needle suite can conveniently and rapidly build puncture negative pressure and observe blood return, can automatically reduce the negative pressure to prevent injury after blood return, and is especially suitable for first aid and rapid building of a blood vessel channel for administration when the blood vessel condition is poor.

The utility model relates to a balloon catheter, belongs to the technical field of medical instruments, and solves the problems that an existing balloon catheter is poor in folding memorability and difficult to restore after pressure relief. A balloon catheter is composed of a tip tube, a balloon, a compression spring, an inner tube, a developing ring, an outer tube, a stress expansion tube and a catheter base. The developing ring is fixed on the inner pipe through bonding or forging and pressing; the compression spring is nested on the inner tube and the developing ring; the stress expansion pipe is a variable-diameter guide pipe and is arranged on the outer pipe in a sleeving mode. According to the balloon catheter, the compression spring is nested on the inner tube of the balloon to provide axial force for the balloon, and under the action of axial tension of the compression spring, the balloon is completely recovered from an expansion state in use to a folding state before use, so that the balloon catheter is easy to fully withdraw.

The application discloses a card-to-card seat assembly and electronic equipment, and belongs to the technical field of electronic products. The card-to-card seat assembly comprises a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly, a card-to-card seat assembly,

The present disclosure provides for a safety catheter assembly comprising a needle hub, a catheter hub, a tip protector housing. Various embodiments can comprise a push-off tab extending radially from the tip protector housing or a portion thereof, and / or structure can be added or removed to affect compliance between a catheter assembly and a catheter insertion device.

A catheter assembly includes: a hollow catheter; a catheter hub to which the catheter is fixed; an inner needle including a needle tip, the inner needle being detachably disposed inside of the catheter; a needle hub to which the inner needle is fixed; a catheter operation member configured to move the catheter relative to the inner needle; and a support member attached to a distal side of the needle hub and configured to rotate about a rotation axis orthogonal to a longitudinal direction of the assembly.