33 results about "Catheter hub" patented technology

A deployment system for accurate placement of localization tags within biological tissue is disclosed. The system comprises a catheter hub with sheath, a stylet, and a loader. The catheter hub provides an interface for system components, while the flexible sheath allows navigation to target sites. The stylet, operable in multiple positions, guides the sheath and assists in tag deployment. The loader houses the localization tag and acts as a safety spacer during deployment. The system is compatible with endoscopes and various imaging modalities, offering improved accuracy and efficiency over traditional wire localization techniques. The localization tags may be passive or active, with potential for advanced functionalities such as biosensing or drug delivery. This minimally invasive system finds applications in tumor marking, lymph node localization, and targeted therapy delivery across multiple medical specialties.

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 configured to be located in the catheter hub on a proximal side of the valve body, the opening member including: 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 proximally from the barrel portion. The opening member is configured to move in a distal direction through the internal space of the catheter hub to open the valve body by the neck portion.

The present application relates to the technical field of medical devices, and discloses an interventional therapy delivery device. The interventional therapy delivery device comprises a tube body and an operating handle. The tube body is composed of an inner hypotube and an outer hypotube, and is fixed at a distal end by a cutting groove. The operating handle is provided with a base, a catheter seat, an adjusting knob, a threaded part, an adjusting knob rotating rod, a fine adjustment knob and a fine adjustment knob rotating rod. The axial movement of the outer hypotube is controlled by the threaded engagement of the adjusting knob to adjust the bending angle. The fine adjustment knob adjusts the bending direction by cooperating with the limiting block and the sliding groove. The present application improves the torque transmission efficiency, reduces the bending radius, simplifies the operation process, and thus improves the accuracy and operation flexibility in interventional surgery.

This application provides a catheter for vascular interventional therapy, belonging to the field of medical device technology. The catheter includes a catheter assembly and a connecting assembly. The catheter assembly includes an outer tube, an inner tube, a balloon, and a connector. The inner tube passes through the outer tube, and the balloon is disposed at the tail end of the outer tube. The connecting assembly includes a catheter seat, an injection tube, a monitoring tube, and a pressure sensor. The catheter seat and the ends of the outer tube are connected opposite each other, and the inner tube is fixedly inserted through the catheter seat. By using the outer tube, inner tube, balloon, connector, catheter seat, injection tube, monitoring tube, and pressure sensor, and by having the inner tube pass through the outer tube and balloon, and then connecting to the bottom catheter seat with the connector, the outer and inner tubes can be disassembled and separated, facilitating retrieval. Simultaneously, the monitoring tube and pressure sensor connected to the catheter seat can monitor the pressure of the internal injection fluid, improving the safety of use.

This utility model discloses a catheter seat assembly and a long-term dialysis catheter. The catheter seat assembly includes a catheter seat, a supporting inner tube, a locking outer tube, and a fixing ring. The catheter seat has a first end and a second end, which are detachably connected to an extension tube and a dialysis main tube, respectively. The supporting inner tube supports the proximal inner wall of the dialysis main tube and is placed inside the second end of the catheter seat. The locking outer tube is sleeved outside the supporting inner tube and wraps around the proximal end of the dialysis main tube, and is connected to the second end of the catheter seat. The fixing ring is sleeved outside the locking outer tube and locks the locking outer tube radially along the dialysis main tube to the proximal end of the dialysis main tube. In this utility model, the catheter seat assembly, through optimized structural design, is detachably connected to the dialysis main tube. When the catheter seat becomes blocked, it can be separated from the dialysis main tube by disassembling the catheter seat assembly, requiring only the replacement of the catheter seat assembly.

The utility model provides a radial artery angiography sleeve pipe relates to medical instrument technical field, including inner tube and sleeve pipe, inner tube includes inner tube catheter seat and inner tube tube body, sleeve pipe includes sleeve pipe catheter seat and sleeve pipe tube body, is provided with joint part on inner tube catheter seat, joint part can be connected with sleeve pipe catheter seat cooperation, when using, the inner tube tube body is worn into sleeve pipe tube body, through joint part and sleeve pipe catheter seat, can lock cooperation between sleeve pipe and inner tube, and the adaptability is good, and it is not easy to cause gas embolism or thrombus, and the end of the middle cavity is closed in locking position, and blood will not overflow, avoid affecting operation operation, when the inner tube and sleeve pipe are synchronous in superselecting the big blood vessel on the bow, and the sleeve pipe and the inner tube are separated after pointing to the target blood vessel, and under the support of guide wire and inner tube, it is superselected to the target blood vessel to the distal end, and the controllability of catheter is increased, and the difficulty of superselection is reduced.

A sheath can be used to protect a catheter hub from contamination. The sheath can surround the catheter hub and seal the interface between the catheter hub and a needleless connector. The sheath can be installed onto the catheter hub either before or after the needleless connector has been connected to the catheter hub.

A device configured for use at a catheter insertion site on a subject can include a base configured to be secured to the subject's skin over the insertion site and a catheter hub holder configured to secure to a catheter hub connected to a catheter that is configured for insertion at the insertion site. The catheter hub holder can be movably coupled to the base to allow for relative movement between the base and the catheter hub and catheter. The catheter hub holder and base can be connected via a gimbal arrangement. The base can include a membrane configured to secure to the subject's skin and a frame. In some implementations, the catheter hub holder is rotatably coupled to a clamp that is connected to the frame. In some implementations, the clamp is pivotably connected to the frame and configured to pivot between open and closed positions.

This invention provides a quick-connect balloon dilation catheter and a method for preparing the balloon dilation catheter. The quick-connect balloon dilation catheter includes a catheter seat, an outer tube connected to the catheter seat, and a balloon connected to the distal end of the outer tube. The outer tube has a metal tube body extending from the proximal end to the distal end, the metal tube body having a non-cutting segment at the proximal end and a cutting segment connected to the distal end of the non-cutting segment. The outer tube also has a polymer inner liner covering the inside of the cutting segment and a polymer sheath covering the outside of the cutting segment, such that the outer tube is integrally formed as a composite tube segment with a metal tube segment at the proximal end and a composite tube segment connected to the distal end of the metal tube segment, the composite tube segment having a quick-connect port penetrating both the inside and outside. This design improves the catheter's delivery and positioning accuracy.

The application relates to a sealed positive pressure needle-free medicine adding connector structure suitable for a remaining needle and belonging to the technical field of medical devices, which comprises an infusion channel and a flow stop clamp, the infusion channel is communicated with a catheter seat and is used for conveying medicine liquid to the catheter seat; a remaining tube is communicated with the catheter seat, and the medicine liquid in the catheter seat can be conveyed to a patient's blood vessel through the remaining tube; the flow stop clamp is arranged on the infusion channel and is used for controlling the on-off of the infusion channel; the sealed positive pressure needle-free medicine adding connector structure further comprises a drum-shaped catheter, one end of the drum-shaped catheter is communicated with the infusion channel, and the other end of the drum-shaped catheter is detachably connected with a medicine liquid bottle loaded with the medicine liquid; the drum-shaped catheter can be elastically deformed in a recoverable shape through external force extrusion.

The utility model discloses a telescopic anti -blocking indwelling needle belongs to medical product technical field, including the catheter seat, the metal wedge is fixedly connected in the catheter seat, one end of metal wedge is fixedly connected with the flexible catheter, and the one end of flexible catheter is away from metal wedge and is penetrated to the front side of catheter seat, the isolation plug assembly is arranged in the catheter seat, and the isolation plug assembly is located the back of metal wedge, the rear portion of catheter seat is slidably connected with the telescopic push pipe of multiple sections, and the rear end of telescopic push pipe of multiple sections is penetrated to the back of catheter seat, the rear portion of telescopic push pipe of multiple sections is fixedly connected with silica gel gasket, and the rear end of telescopic push pipe of multiple sections is detachably connected with needle core seat, when the patient does not transfuse, the telescopic push pipe of multiple sections can retract to the catheter seat, and the blocking pipe is inserted into the flexible catheter and is completed to block, prevent the blood flow of patient to cause the blockage in the flexible catheter, shorten the length of whole indwelling needle simultaneously, and the paste fixing of patient's hand is convenient.

The punctal plug insertion device of the present invention comprises: a catheter hub having a channel formed to contain a punctal plug; and a main body coupled to the catheter hub and including an external force application unit for applying an external force to the punctal plug contained in the catheter hub.

The present invention provides a delivery device comprising an insertion device having a retraction spring configuration for automatic retraction of an insertion needle. A button on the insertion device is used to insert the insertion needle and catheter, and after the insertion needle is fully inserted, a rotary engagement releases the needle seat, wherein the spring causes the insertion needle to retract automatically. A catheter assembly includes a catheter seat, a septum, and a catheter. The catheter seat has a fluid passage separate from the insertion needle for supplying fluid to the catheter. The fluid passage may extend through the distal end of the septum, through a side portion of the catheter seat and the septum, or directly through a side portion of the catheter seat to a fluid chamber formed between the septum and the distal end of the catheter seat.

The catheter system comprises a catheter assembly comprising a catheter hub (12) and a catheter (20). The catheter system comprises a barrel (24), a clip (52) and a needle hub (32) located within the barrel, an introduction needle (34) fixed within the needle hub, and a catheter hub slider (40) extending through a slot (30) in the barrel and configured to slide along the slot from a proximal position to a distal advancement position. The catheter system comprises a guidewire (44) configured to advance distally through the introduction needle. The catheter system comprises a guidewire slider (50) extending through a slot and configured to slide along the slot to advance the guidewire from a proximal position to a distal position. When the guidewire slider is in the proximal position, the catheter hub slider is prevented from sliding along the slot.

The present application relates to the technical field of medical devices, and discloses an interventional therapy delivery device. The device comprises a tube body and an operating handle. The tube body is composed of an inner hypotube and an outer hypotube, which are fixed at the distal end and provided with a cutting groove. The operating handle comprises a shell, a catheter seat rotatably arranged at the proximal end of the shell, a push rod, a fine adjustment knob and a push button. The inner hypotube is fixedly connected to the catheter seat at the proximal end. A central hole is formed in the central axis direction of the push rod, and the outer hypotube is fixed in the central hole. A sliding groove is formed at the distal end of the push rod. The fine adjustment knob is provided with a knob central hole and a limiting rib at the proximal end, and cooperates with the sliding groove. The push button is coupled to the push rod. The outer hypotube is moved to adjust the bending angle by sliding the push button, and the push rod is adjusted in direction by rotating the fine adjustment knob. The present application effectively improves the torque transmission efficiency, reduces the bending radius, and simplifies the operation process.

The catheter system may include a catheter assembly (10) and a needle safety clip (26) located in a safety can (28) positioned proximal to the catheter assembly. The catheter system may also include a barrel (30), a needle hub (34) fixed to the barrel, an introduction needle (36) fixed within the needle hub, a catheter hub slider (42), a guidewire slider (54), and a guidewire (48) connected to the guidewire slider. In response to the movement of the catheter system from a first position to a second position, the guidewire slider pushes out the flexible arm (44) of the catheter hub slider, causing the flexible arm to disengage from contact with the needle hub. The catheter hub slider is configured to slide from a proximal position to a terminally advanced position.

The utility model belongs to the field of medical apparatus and instruments, disclose a kind of medical catheter with coupling liquid compensation function, comprising: catheter seat is equipped with containing cavity, and catheter seat is equipped with injection hole, air hole and first passage;One end of outer catheter is sealedly connected with catheter seat, other end is closed, and outer catheter is communicated with containing cavity and forms second passage;Retracement component is movably arranged in second passage;First sealing ring is arranged in containing cavity;Second sealing ring is arranged in containing cavity;Third sealing ring is fixedly arranged in the outside of retracement component, and first sealing ring and the closed end of outer catheter form first sealed cavity, and second sealed cavity is formed between first sealing ring and third sealing ring, and third sealed cavity is formed between second sealing ring and third sealing ring;Injection hole is communicated with first sealed cavity, and air hole is communicated with second sealed cavity and atmosphere;The both ends of first passage are communicated with first sealed cavity and third sealed cavity respectively.The utility model can avoid the air bubble or deflation in catheter when retracting.

This invention relates to the field of medical device technology, specifically to a notching device based on a paper-cut structure, comprising a stress-relieving sleeve and a catheter hub, as well as a pusher section, a metal tube, and a hollow head. The right end of the stress-relieving sleeve is connected to the catheter hub, and the left end of the stress-relieving sleeve is fitted with the pusher section. The other end of the pusher section is connected to the metal tube, which is coaxially connected. A PTA balloon passes through the catheter hub, the stress-relieving sleeve, and the pusher section, and the PTA balloon passes through the pusher section into the metal tube. The PTA balloon is nested inside the metal tube, and the end of the metal tube is connected to a bullet-shaped hollow head. When the PTA balloon is inflated, the surface of the cut metal tube begins to expand. When the surface of the metal tube expands to a certain extent, the expansion process cannot continue due to the limitation of the rhomboid angle. At this time, the force of the continued expansion of the PTA balloon causes the node of the cut section to rotate together with the connecting rod. The rotated connecting rod can apply circumferential force to the narrowed part of the blood vessel.

Disclosed herein are integrated catheter-placement devices and methods thereof. An exemplary device includes an intravascular catheter, a needle, an access guidewire, and a blood egress-mitigating means for mitigating blood egress from the device. The intravascular catheter includes a catheter tube and catheter hub. The catheter extends from a body of the device. The needle includes a needle shaft and a needle hub. The needle shaft extends through the catheter tube by way of a catheter-tube lumen thereof. The access guidewire is disposed in a needle lumen of the needle. The blood egress-mitigating means mitigates blood egress from the device by mitigating blood egress from an annular space within the needle shaft while still allowing the access guidewire to axially move within the needle lumen. The annular space is defined by a luminal surface of the needle shaft and a surface of the access guidewire.

This invention belongs to the field of medical device technology, and particularly relates to a guiding catheter for pulmonary arteries, including a catheter hub, one end of which is detachably connected to a tube body. The end of the tube body away from the catheter hub has a curved structure, and the tube body is a radiopaque tube. The detachable connection of the tube body to the catheter hub facilitates the replacement of tubes with different curved structures, saving surgical time. The radiopaque design of the tube body enhances the surgeon's ability to identify the target location, helping to more accurately assess the condition and formulate a surgical plan. This invention establishes access within the narrow, tortuous, and complex branches of the pulmonary artery, allowing patients to receive effective treatment during a stressful treatment process.

The embodiment of the present application provides a catheter seat, a catheter sheath and a catheter system, wherein the catheter seat comprises an adjusting member, a shell and an elastic member; the elastic member is used for exerting a reset force for resetting the catheter seat; the adjusting member comprises a first structure, the first structure is used for adjusting a state of the catheter seat, and the state of the catheter seat comprises a reset state and a use state; the shell comprises a second structure associated with the reset state; when the first structure cooperates with the second structure, a limiting force for limiting the reset of the catheter seat disappears, so that the catheter seat is adjusted to the reset state under the action of the reset force. By adopting the technical scheme, the reset of the catheter seat can be realized.

An arterial catheter system comprises a catheter assembly including a catheter hub and an arterial catheter. An arterial catheter system comprises a needle assembly including a needle hub and a guide needle. An arterial catheter system comprises an extension tube coupled to the catheter assembly, and a fluid passage extending through the arterial catheter, catheter hub, and extension tube. The first fluid resistance in a portion of the fluid passage within the extension tube is greater than the second fluid resistance in the fluid passage distal to or proximal to the aforementioned portion of the fluid passage. The extension tube has a length L and an inner diameter D. The geometric coefficient G of the aforementioned portion of the fluid passage. f is L / D 4 It is equivalent to and selected to reduce hemolysis during arterial blood collection.

A catheter and needle assembly (1) is described, having a spring-driven retractable needle (100). The assembly may include a hollow handle (10), a grip portion (30), a catheter hub (60) having a catheter (68), and a needle (100). The needle may have a first position and a second position, in which the needle is slidably disposed within the catheter, and in the second position, the needle is slidably removed from the catheter and at least partially retracted into the hollow handle. The grip portion may include a trigger portion (130) that activates a spring (108) to move the needle from the first position to the second position. In the second position, the sharp distal tip (104) of the needle is shielded by the grip portion to prevent accidental needlesticking.

A catheter assembly having a needle hub, a needle with a needle tip, and a catheter hub removably connected to the needle hub. The catheter hub has a first body with a first nose section and a second body connected to the first body and which has a pair of laterally extending wing members. The catheter hub also has at least one finger cradle configured for receiving and retaining a finger of a user laterally and rearwardly away from the first nose section, and at least one finger guiding feature configured for guiding the finger of the user toward the finger cradle.

The present invention relates to a deflection control mechanism for a medical device, particularly for a steerable flexible endoscope, the endoscope having an elongate flexible shaft comprising a steerable section that is deflectable by movement of at least one pair of counteracting control wires, the deflection control mechanism comprising a support structure, a drive wheel rotatably supported in or on the support structure, and an elongate traction element having a flexible section, a first coupling section connected to a first end of the flexible section and a second coupling section connected to a second end of the flexible section, wherein the flexible section of the traction element mechanically engages with the drive wheel, wherein the first and second coupling sections each comprise a fixation element for fixing a respective proximal end of each control wire of the at least one pair of control wires, whereas each control wire features a respective guide tube to guide each respective control wire along a longitudinal axis, the respective guide tube being held in a respective guide tube mount opening of a guide tube mount of the support structure, the guide tube mount opening having an entry opening to accept the respective guide tube. Furthermore, the invention relates to a medical device, a method for servicing and a method for assembling a deflection control mechanism or a medical device.

A catheter insertion device includes a housing having a cam member, a needle hub having a introducer needle, and a catheter hub having a catheter. The catheter hub has a fluid opening that is fluidly communicable with the catheter. The needle hub or the catheter hub includes at least one operating peg and the needle hub and the catheter hub are moved together from an initial position to an extended position. The device further includes an insertion unit to move the needle hub and the catheter hub, and at least one spring. During movement toward the extended position, the operating peg engages the cam member to cause the needle hub or the catheter hub to rotate, thereby releasing the relative fixation between the needle hub and the catheter hub, thereby enabling the at least one spring to withdraw the introducer needle from the catheter, thereby establishing fluid communication between the fluid opening and a distal end of the catheter.

A medical device (100), comprising a hub (102) or housing (118) having a push tab (112) including a main portion extending radially from an upper surface of the hub (102) or housing (118), and at least one anti-rotation feature (114, 116) for resisting rotation of the hub (102) or housing (118). A cannula (103) is directly or indirectly connected to the hub (102) or housing (118). The medical device (100) may be a catheter, the cannula (103) may be a catheter tube, and the hub (102) or housing (118) may be a catheter hub or an introducer needle tip shield of the catheter (100).

The application relates to the technical field of medical supplies and particularly discloses a double-layer balloon catheter which comprises a catheter seat, a catheter, a first balloon body and a second balloon body, the catheter is connected with the catheter seat, the first balloon body and the second balloon body are coaxially nested to form a double-layer balloon body structure which is sleeved outside the catheter, the first balloon body forms a first cavity, the second balloon body is located at the outer layer, the second balloon body and the first balloon body form a second cavity, the catheter seat is provided with a guide channel, a first communicating nozzle and a second communicating nozzle; gas can be introduced into the first cavity through the first communicating nozzle to simultaneously expand the first balloon body and the second balloon body, so that the folds and dead angles are eliminated, the folding and forming of the product are facilitated, and when the double-layer balloon catheter is used clinically, filling liquid can be introduced into the second cavity through the second communicating nozzle, the second cavity can be extruded when being filled, the residual gas in the first cavity is discharged through the first communicating nozzle, the filling liquid can completely and dead-angle-free fill the second cavity, and the developing blind area under X-ray perspective is completely eliminated.

This invention relates to the field of dilation catheter technology, and more particularly to an infusion balloon dilation catheter system, comprising an infusion balloon dilation catheter assembly, which includes a catheter hub, a stress-relieving tube, an outer tube, a balloon, and a tip tube connected in sequence; a catheter tip vascular image acquisition module, used to determine whether the balloon catheter is within the true lumen of the blood vessel; a support wire tip image acquisition module, used to acquire an image of the support wire morphology and the corresponding vascular morphology under X-ray fluoroscopy; and a support wire tactile sensing module, used to acquire the force changes, support wire morphology image, and corresponding vascular morphology image during support wire advancement to determine whether the support wire support force is adequate, and to adjust the support wire posture when the support wire support force is insufficient. The infusion balloon dilation catheter system of this invention simultaneously possesses balloon dilation and angiography functions, and utilizes image and data processing technology to improve the intelligence level of medical devices.

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