112 results about "Catheter placement" patented technology

A catheter configured for placement within a bodily lumen, comprises: a catheter sheath defining a first lumen for medical tools; and an exchange segment defining a second lumen for a guidewire. A proximal end of the exchange segment is joined with a distal end of the catheter sheath in a lengthwise direction forming an angle therebetween, such that the second lumen is laterally offset by a distance and angled with respect to the first lumen. When the catheter is placed within a patient's anatomy, the catheter sheath and / or the exchange segment straightens out so that the axis of the second lumen and the axis of the first lumen become substantially parallel to each other. The offset distance between the axes of sheath and exchange segment depends mainly on the diameter of the guidewire to be used, on the diameter of the sheath, and the angle of the junction.

The invention discloses a PICC (Peripherally Inserted Central Catheter) tip precise navigation fixing method and system based on electrocardiogram real-time positioning. High-precision positioning and safe fixing of a catheter tip are realized through a multi-modal data fusion and deep learning technology. The method comprises the following steps: collecting intracavity electrocardiosignals (ECG) in real time through a catheter built-in electrode, and obtaining blood vessel wall contact pressure and temperature data in combination with an optical fiber sensor; an improved wavelet threshold algorithm is adopted to dynamically suppress motion artifacts, and P-wave features are enhanced; the preprocessed ECG signals are input into a spatial-temporal feature fused Transformer model, a time attention layer is used for analyzing P-wave time sequence changes, a space attention layer integrates multi-lead space distribution features, and the positioning precision is optimized in combination with preoperative blood vessel anatomical data; the ECG positioning result and the optical fiber sensing data are fused through Kalman filtering, three-dimensional position information of the tip end of the catheter is generated, and real-time navigation is conducted on an augmented reality interface; and when the P wave amplitude reaches a CAJ threshold value, the contact pressure is safe and no abnormal temperature exists, a shape memory alloy (SMA) fixing ring is triggered to contract, and accurate fixing is achieved. The method solves the problems that a traditional method depends on X rays and is poor in anti-interference performance, has the advantages of being free of radiation, high in real-time performance and adaptive to blood vessel deformation, and is suitable for clinical P catheter implantation.

A catheter placement system for placing a catheter, the system includes a stylet with an optical fiber extending therethrough, the stylet body extending between a proximal end and a distal tip. A console, equipped with optical logic, delivers broadband incidence light to the optical fiber and receives reflected light signals to determine positional information about the stylet body. The stylet body is configured to be separable at a point between the proximal end and distal tip to allow a catheter to be advanced over a distal portion of the stylet body. The distal portion is configured to be reattached to the proximal portion to reconfirm the position of the stylet body distal tip prior to removal of the stylet from the catheter. The system further includes a severing device that is easy to actuate and ensures a clean, perpendicular cut to facilitate reconnection between the proximal and distal portions.

A catheter placement system for placing a catheter, the system including a stylet with an optical fiber (135) extending therethrough, a stylet body (290) extending between a proximal end and a distal tip (290). A console (20), equipped with optical logic, delivers broadband incidence light to the optical fiber and receives reflected light signals to determine positional information about the stylet body. The stylet body is configured to be separable at a point between the proximal end and distal tip to allow a catheter to be advanced over a distal portion of the stylet body. The distal portion is configured to be reattached to the proximal portion to reconfirm the position of the stylet body distal tip prior to removal of the stylet from the catheter. The system further includes a severing device that is easy to actuate and ensures a clean, perpendicular cut to facilitate reconnection between the proximal and distal portions.

A medical device for use in catheter application has a longitudinal axis and a capillary portion that is elongate coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end. The capillary portion has a flexurally resilient design and a capillary outside diameter. A dilator portion, which is elongate coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end axially adjoining the proximal capillary end, has a dimensionally stable design and a dilator outside diameter that is larger than the capillary outside diameter at least in sections. A lumen, which is elongate coaxially to the longitudinal axis continuously between the proximal dilator end and the distal capillary end through the dilator portion and the capillary portion, is configured for receiving a cannula.

An integrated peripheral intravenous (IV) catheter configured for blood draw both at the time of catheter placement and during catheter indwell. The peripheral IV catheter includes a catheter adapter having a catheter configured to be inserted into a patient's vasculature and a side inlet defining a fluid pathway into and out of the catheter. The peripheral IV catheter also includes a side port member having a main branch, the main branch including a distal end configured to couple the side port member to the side inlet of the catheter adapter and a connector portion accessible via a proximal end of the main branch. Additionally, the peripheral IV catheter includes a blood collection adapter removably and directly coupled to the connector portion of the side port member at the proximal end of the main branch. Furthermore, side pore member of the peripheral IV catheter may include a side branch.

Advanced catheter placement systems require disengaging a needle from the guidewire without disturbing a position of the guidewire within the vasculature. Embodiments include withdrawing the needle proximally and drawing the needle over a splitter system that includes a splitter wedge. The splitter system separates the needle along a longitudinal axis. A portion of the guidewire can then pass between a first portion and a second portion of the needle, allowing the needle to disengage the guidewire. A catheter disposed on a proximal portion of the guidewire can then be advanced thereover into the vasculature. A needle safety system can adhere a puncture-resistant adhesive tape to the split portions of the needle. The tape can encapsulate the portions of the needle mitigating any damage or trauma caused by sharpened edges of the needle portions.

The invention relates to a medical device for use in catheter placement, comprising a longitudinal axis, a capillary section extending coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end, and having a flexible design and a capillary outer diameter, a dilator section extending coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end, which axially adjoins the proximal capillary end, and having a dimensionally stable design and a dilator outer diameter that is at least partially larger than the capillary outer diameter, and a lumen extending coaxially to the longitudinal axis through the dilator section and the capillary section between the proximal dilator end and the distal capillary end and is designed to receive a cannula.

A device for interfacing with a syringe body and plunger for delivering a wire includes a needle configured for coupling with the syringe body having a bore for guiding a proximal end of the wire into the workspace. A slide is configured for coupling with the syringe plunger for moving with the syringe plunger between a forward position and a retracted position. The slide is releasably holds a distal end of the wire for advancing the proximal end of the wire forwardly in the needle when the slide moves the syringe plunger from the forward position to the retracted position. A wire advancing mechanism translates the movement of the wire distal end for advancing the proximal end of the wire forwardly as a result of the syringe plunger moving to the retracted position.

The utility model discloses a stripping tool for a heat shrink tube of a medical catheter. The stripping tool comprises a fixing assembly and a stripping assembly, the fixing assembly comprises a bottom plate and a mounting plate, and a product bracket is fixed to the upper end face of the bottom plate and used for containing a to-be-machined guide pipe. The stripping assembly comprises a pressing wheel, a blade and a pressing shaft, the pressing wheel, the blade and the pressing shaft are installed above the product bracket, and the stripping assembly is used for stripping the pipe. According to the utility model, the bearing groove of the product bracket can be adapted to conduits of various sizes, after the conduit to be processed is placed on the product bracket, the micrometer head and the adjusting knob are adjusted to control the extending length of the blade, and the roller and the pressing shaft are matched to abut against the conduit, so that the heat shrink tube can be rapidly stripped, and the yield is effectively improved.

The invention discloses a medical bend-adjusting catheter testing tool and a testing method thereof.The medical bend-adjusting catheter testing tool comprises a workbench, a testing frame is arranged at the top of the workbench and comprises a base, the base is installed in the middle of the top of the workbench, a head plate is installed at one end of the top of the base, and a tail plate is installed at the other end of the top of the base; the end, close to the tail plate, of the top of the base is provided with a body plate, the middle of the head plate, the middle of the tail plate and the middle of the body plate are each provided with a guide sleeve used for allowing a guide pipe to penetrate through, and the three guide sleeves are located on the same central axis. According to the invention, the 360-degree protractor and the 180-degree protractor on the head plate can respectively detect the deformation of the bending section of the catheter in the Y-axis direction and the X-axis direction, and the 180-degree protractor near the body plate is used for detecting the bending degree of the catheter body. The catheter deformation attitude information cannot be comprehensively and accurately obtained, and the test comprehensiveness and accuracy are improved.

This invention provides a neurointerventional catheter assembly, relating to the field of medical device technology, comprising a catheter body; a flexible tip at the distal end of the catheter body; a side hole on the sidewall of the flexible tip; a guide portion on the flexible tip; a through hole in the middle of the flexible tip; and a control guidewire passing through the middle of the catheter body, the control guidewire having a protrusion with a diameter larger than the through hole diameter. This invention features a flexible tip with a side hole located next to the through hole, allowing the side hole to be directly aligned with a branch vessel. The flexible tip guides a stent catheter, which then passes through the side hole, enabling the stent catheter to directly enter the branch vessel. This reduces the difficulty of stent catheter placement, thereby reducing surgical complexity and improving treatment outcomes.

The invention discloses an integrated guide control method for a prostate dilation catheter, relates to the technical field of medical treatment, solves the problem of highly integrating two core links of'guide 'and'control' in an operation, and realizes simplification of operation, accuracy of positioning and controllability of mechanical parameters, so that the treatment effect is ensured, and the operation cost is reduced. According to the technical scheme, the method is characterized by comprising the following steps that firstly, preoperative measurement and planning are carried out; 2, a catheter is placed in and initially positioned; 3, integrated guiding and accurate anchoring are carried out; the prostate dilation device has the advantages that the prostate dilation operation is successfully converted from a complex technology which highly depends on experience and equipment to an advanced treatment mode which is standardized, quantitative, minimally invasive and excellent in function protection through unique integrated guide and control design, and revolutionary improvement is brought to multiple dimensions of curative effect, safety, function and efficiency.

A method includes receiving an anatomical map of wall tissue of at least a portion of a cardiac chamber, the map superimposed with a grid of ablation tags that are graphically encoded according to respective levels of ablation of the wall tissue. Upon placing a multi-electrode ablation catheter in a vicinity of the wall tissue, one or more of the ablation tags are graphically re-encoded according to (i) existing levels of ablation associated with the tags and (ii) electrode proximity to wall tissue locations associated with the tags. The anatomical map, having the re-encoded ablation tags, is displated to a user.

The lacrimal passage probe comprises a sheath, a guide head, a guide wire and an orientation mechanism. The sheath comprises a working channel, the guide head is arranged at the front end of the sheath, and the guide wire is arranged in the working channel. After the guide wire is bent, a traction part is formed at the bent position, the traction part is arranged on the outer side of the far end of the working channel, the guide wire extends along the working channel, and the near end of the guide wire extends out of the near end of the working channel. And the orientation mechanism is used for fixing the direction of the traction part of the guide wire. In the withdrawing process, the guide wire and the sheath are locked through the locking mechanism, and integral withdrawing can be achieved. Due to the arrangement of the orientation mechanism, the direction of the traction part can be well fixed, so that the traction part can be smoothly exposed out of the anterior nostril in the direction of the nasal cavity, in the whole withdrawing process, the lag phenomenon of the guide wire can be well prevented, and the safety and success of the catheterization process are better guaranteed; and the clinical operation requirements during clinical middle catheter placement can be better met.

The present application relates to the field of medical devices, and discloses a gastrointestinal catheterization mirror and a method for using the same. The catheterization mirror comprises a camera device, an illumination element arranged in the camera device, the illumination element being used for illuminating an object, a traction member comprising at least one threading channel, one end of the traction member being connected to the camera device, and the other end being connected to a display device, and a dissolvable fixing member, the camera device and the traction member being fixed in front of a gastrointestinal catheter by the dissolvable fixing member. The gastrointestinal catheterization mirror can be used on gastrointestinal catheters of various specifications, realizes visible guided catheterization operation and withdrawal of the camera device after the fixing member is dissolved, thereby getting rid of blind insertion of the gastrointestinal catheter, and further eliminating the need for confirmation of the catheter placement position across clinical departments, and the gastrointestinal catheterization mirror has low manufacturing cost and is disposable.

This invention relates to the field of medical device technology, and in particular discloses a medical puncture and catheter placement training manikin, comprising a torso with two arms fixed to both sides. A power supply is fixed inside the torso. Each arm includes a support frame covered with a biomimetic rubber sheath, and at least one fixed vein is fixed to the inner wall of the support frame. The advantages are: multiple combinations can be selected to simulate problems encountered during and after PICC placement; the situation encountered by the operator in each training session can differ from the previous one; and the use of an ultrasound detector and display screen allows instructors to monitor the catheter's position and the operator's specific actions during placement in real time. This facilitates simulated practice and assessment of PICC placement techniques for medical personnel, allowing for evaluation of their mastery of PICC placement techniques and improving their proficiency.

The invention belongs to the technical field of medical instruments, and provides an embryo transfer catheter auxiliary device which comprises an inner supporting core and a heating wire. The inner supporting core is formed by coaxially connecting a supporting rod and a flexible pipe with a closed front end, the flexible pipe is filled with a phase change material, and the heating wire penetrates through the flexible pipe and is used for heating and softening the material. A containing cavity is formed in the supporting rod, a slidable piston is arranged in the containing cavity, the multiple supporting pieces are connected in series through a connecting rope and connected to the piston, and the farthest end abuts against the closed end of the flexible pipe. The piston moves to drive the supporting piece to enter and exit from the flexible pipe, and dynamic adjustment of the volume of the phase-change material is achieved. The supporting piece is made of an ultrasonic visual material or structure, and intraoperative positioning is facilitated. Due to the adoption of the structure, the device provides rigid support during catheter placement, can actively reduce the volume and soften after positioning, realizes non-traction and low-resistance withdrawal, supports ultrasonic real-time guidance, and remarkably improves the positioning precision and the operation safety of the outer tube.

The utility model provides an improved chest strap, and relates to the technical field of cardiac surgery supplies, the improved chest strap comprises a main strap, side straps, a fixing strap and a connecting strap, the two ends of the lower side of the main strap are both connected with the side straps, a cushion strap is clamped and pasted between the two side straps, and through the arrangement of the side straps, the cushion strap and a protection pad, when a catheter penetrates, the fixing strap is fixed to the fixing strap when the catheter penetrates into the fixing strap. The catheter can be placed at any position of the catheter penetrating groove, the catheter penetrating groove adopts a through groove mode and is not limited by the position of the catheter, the applicability of the catheter penetrating groove is enhanced, the cushion belt is placed on the lower side of the catheter and makes direct contact with the skin, foreign body sensation brought by the catheter to a patient is reduced, and the protection pad covers the upper end of the catheter and plays a role in protecting the catheter. Through the arrangement of the fixing band and the connecting band, the hook and the hanging ring are fixed, the third loop face hook-and-loop fastener and the fourth hook face hook-and-loop fastener are fixed in an adhering mode, the double-fixing mode is adopted, the fixing effect is better, the hook and the hanging ring are connected in a relatively fixed mode, and the hook and the hanging ring are not prone to being opened.

The utility model discloses an epidural catheter fixing device for analgesia of intraspinal delivery, which can realize sterile sealing treatment on a catheter placement position while meeting the catheter placement requirement, avoids blood and liquid seepage, limits and protects an epidural catheter, and avoids the problems of catheter pressing, catheter folding or catheter falling. According to the key points of the technical scheme, the device comprises a compression part, an application and a protective patch, the compression part is arranged on one side of the application, the compression part is provided with a channel for an existing epidural catheter to penetrate through, one end of the channel forms a catheter outlet in the surface, away from the application, of the compression part, and the other end of the channel forms a catheter containing opening in the surface of the application. A butt joint structure used for being connected with an epidural catheter is arranged on the surface of the catheter containing opening and / or the surface of the application patch, and the protection patch can cover and be attached to the surface of the application patch and the peripheral skin at the same time. When the epidural catheter is indwelled, a triple sealing function is realized by utilizing the compression piece, the application and the protective patch, so that the problem of seepage and blood oozing is avoided, and the epidural catheter is prevented from moving randomly to be separated from the epidural catheter.

This application discloses a catheter insertion system and a catheter placement system. The catheter insertion system includes: a catheter defining a catheter lumen and extending along a longitudinal axis; a needle defining a needle lumen and disposed within a portion of the catheter lumen; a housing supporting one of the catheter or the needle; and a blood return indicator in fluid communication with the needle lumen, the blood return indicator including a plunger fixedly attached to the housing and including a syringe barrel slidably engaged with the plunger along the longitudinal axis.

The utility model relates to the related field of medical instruments, in particular to an epidural anesthesia catheter fixing device which comprises an adhesive tape, a fixing seat, a rotating ball, a connecting rod, a guide cylinder, a first bolt, an arc-shaped clamping plate, a first silica gel sheet, a second silica gel sheet, an arc-shaped protrusion, a spring, a groove, an arc-shaped plate, a second bolt, a rubber pad and the like. The rotating ball and the fixing seat are arranged, and the rotator rotates in the fixing seat to drive the connecting rod and the guide cylinder to rotate, so that the path angle of placement of the anesthesia catheter is adjusted, the path of the catheter is optimized, unnecessary bending or twisting of the catheter is avoided, stable flowing of liquid medicine in the catheter is kept, and the anesthesia catheter is convenient to use. Stable liquid medicine conveying is facilitated, and the practicability of the fixing device is improved.

A catheter placement system including a catheter, a needle for creating an insertion site, and a skin nicking device for enlarging the insertion site. A catheter placement device includes the skin nicking device slidably coupled with the needle, where the skin nicking device has one or more blades attached to a frame thereof. Distally displacing the skin nicking device along the needle causes the blade to nick the skin to enlarge the insertion site. A shield of the skin nicking device transitions between a safe configuration encapsulating the blade and a use configuration exposing the blade and the shield may be biased toward the safe configuration. A latch secures the shield in the safe configuration and an actuator releases the latch. A sheath of the skin nicking device includes the needle slidably disposed within a lumen thereof and a sharp tip of the blade embedded within a wall thereof.

This disclosure generally relates to multi-lumen catheters, ports, and adapters for delivering fluid to a tissue or cavity in a subject and methods thereof. The multi-lumen catheters disclosed herein comprise a catheter comprising a guide lumen configured to receive a stylet (e.g., for placement of the catheter within a cavity / tissue) or a stylet port of the adapter (e.g., to anchor the catheter to the adapter); and a fluid lumen configured to receive a fluid port of the adapter (e.g., to receive a fluid via the fluid port into the fluid lumen). In some embodiments, the multi-lumen catheter is size-adjustable. Other aspects of the disclosure relate to systems comprising multi-lumen catheters in fluidic communication with an adapter in fluidic communication with a reservoir. Additional aspects of the disclosure relate to methods of inserting the described catheters, ports, adapters, and / or systems into a tissue or cavity of a subject (e.g., brain tissue).

A method, apparatus and computer program product, the method comprising receiving input from a force sensor on a catheter, the catheter comprising electrodes for ablating a heart of a patient, the catheter placed at a location within the heart; based at least on the received input, calculating a predicted PFA ablation index (PFA AI) of an ablation that would be caused by applying by the catheter force equal to the assessment at the location for a predetermined number of electrical pulses having predetermined magnitude and predetermined duration, wherein said calculation is in accordance with a predefined formula; and displaying the predicted PFA AI to a user of the catheter.

A medical catheter controlled by a stay wire and provided with a curled inner end comprises a stay wire control component, a catheter body and a catheter connector, the control component comprises a handle and a U-shaped lock catch which are connected into a whole, two threading holes are formed in the end of the U-shaped lock catch side by side and penetrate through the U-shaped lock catch in the thickness direction of the U-shaped lock catch, and the catheter connector is connected with the handle. The two ends of the stay wire extending out of the joint of the guide pipe respectively penetrate through the two threading holes, the ends of the two penetrated stay wires are integrally knotted, and the knotted wire knot is located in the groove; according to the guide pipe, a double-threading-hole structure is designed on the U-shaped lock catch, the pull wire and the U-shaped lock catch are connected in the mode that the two ends of the pull wire penetrate through the two threading holes respectively and are knotted, a connecting structure that a single wire is wound and connected in a sleeved mode through the two holes is formed, high connecting firmness is achieved, the phenomenon that the pull wire slides out of the threading through holes due to stress is avoided, and the service life of the guide pipe is prolonged. The situation that the pull wire and the lock catch are connected again or a new catheter is replaced and placed again in the catheter placement process is avoided, and the catheter placement efficiency and the treatment experience of a patient are improved.

This utility model provides a mobile radial artery puncture and catheter placement fixation frame, including a support plate, a connecting rod, a palm fixation strap, an inflatable wrist support module, a rotation adjustment module, a fixing rod, and a positioning bolt. The connecting rod is located at the bottom of the support plate along its length. The middle part of the palm fixation strap is movably and adjustablely fitted onto the connecting rod, and both ends of the palm fixation strap extend out from both sides of the support plate. The two ends of the palm fixation strap are fixedly connected together in an adjustable position, and the palm fixation strap is used to fix the patient's palm. The inflatable wrist support module is movably and adjustablely located on the support plate, and the inflatable wrist support module is used to elevate the patient's wrist. The rotation adjustment module is located at the bottom of the support plate and is used to adjust the angle of the support plate. The fixing rod is connected to the rotation adjustment module and is located below the support plate. The fixing rod has a limiting groove for the movable infusion rod to be inserted. The positioning bolt passes through the fixing rod and can extend into the limiting groove.

A method, apparatus and computer program product, the method comprising receiving input from a force sensor on a catheter, the catheter comprising electrodes for ablating a heart of a patient, the catheter placed at a location within the heart; based at least on the received input, calculating a predicted PFA ablation index (PFA AI) of an ablation that would be caused by applying by the catheter force equal to the assessment at the location for a predetermined number of electrical pulses having predetermined magnitude and predetermined duration, wherein said calculation is in accordance with a predefined formula; and displaying the predicted PFA AI to a user of the catheter.

The utility model discloses a novel coronary artery balloon dilatation catheter, which relates to the technical field of medical instruments and comprises a catheter, the outer surface of the catheter is connected with a balloon, the surface of one end of the catheter is connected with a probe in a penetrating manner, and the outer surface of one end of the catheter is provided with an adjusting unit. A plurality of miniature blades are annularly arranged on the outer surface of the balloon, the catheter is matched with the catheter through an adjusting seat, a movable column and a limiting ball, the insertion speed of the catheter is adjusted, and the placement speed of the catheter is adjusted through the matching of three adjusting blocks, a shifting block, a limiting pin, an adjusting groove, a pin hole and the movable column. The catheter inserting speed is conveniently controlled, the placing stability is improved, the operation time is shortened, the adjusting frequency is reduced, the catheter is conveniently placed in, the second catheter cavity is matched with the probe and the miniature blade, the hematoma position is conveniently broken, suction is conducted through the negative pressure device, the hematoma position is conveniently and rapidly dredged, and blood vessels are prevented from being blocked by the hematoma.