30 results about "Heart Catheters" patented technology

A vascular occlusion catheter is configured for insertion, and at least partial inflation, into a targel blood vessel. The vascular occlusion catheter includes a proximal catheter shaft, a distal catheter shaft, and a semi-compliant or non-compliant occlusion balloon mounted at a proximal side thereof to the proximal catheter shaft and mounted at a distal side thereof to the distal catheter shaft. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The central catheter shaft is constructed as the primary load-bearing chassis of the vascular occlusion catheter. The occlusion balloon defines a blown diameter between approximately twenty-five and approximately thirty-five millimeters and the occlusion balloon defines a double-wall thickness of between approximately 0.0003″ and approximately 0.0020″.

A wearable monitor is configured for early detection of internal bleeding events and particularly hematomas after vascular catheterization including cardiac catheterization. The wearable monitor is placed over an access location following the vascular catheterization procedure and the wearable monitor system periodically runs diagnostic test to detect changes in the tissue around the vascular access location. An emitter device may input an emitter input into the tissue and a detector device may then measure the emitter input after it has passed through the tissue, an emitter output. A computer may receive the data from the detector device and operate a program that determines changes in the tissue and in particular, pooling of blood in the tissue. The emitters may be electrodes that input an electromagnetic input, or an ultrasound emitter that inputs ultrasound sound waves, or a Near IR emitter that emits Near IR electromagnetic radiation.

Various systems (100) and methods (500) are provided for displaying information indicating whether a distance between a location of a feature in a region of interest of a subject and a location of a medical device (140) in the region of interest is within a safe range corresponding to the feature. The location of the feature in the region of interest may be determined (520). The position of the medical device (140) in the region of interest may be determined (530). The distance between the position of the feature and the position of the medical device (140) may be determined (540). Whether the distance is within the safety range may be determined (550). A display (218) may be controlled to display an ultrasound image (560) of the region of interest including the feature and the medical device (140) and to display the information (570) indicating whether the distance is within the safe range.

The invention discloses a non-invasive pulmonary arterial hypertension hemodynamic monitoring method based on machine learning, and belongs to the technical field of pulmonary arterial hypertension hemodynamic monitoring. The non-invasive pulmonary arterial hypertension hemodynamic monitoring method based on machine learning comprises the following steps: collecting BCG signal data through static data collection equipment; eCG signal data are acquired through dynamic data acquisition equipment; pPG signal data are collected through a photoelectric finger clip; static feature extraction is carried out on static data composed of the BCG signal data and the PPG signal data, and dynamic feature extraction is carried out on dynamic data composed of the ECG signal data and the PPG signal data; and inputting the static characteristics and the dynamic characteristics into a regression model, and training the regression model by taking the hemodynamic parameter CO measured by the right cardiac catheter at the same time as a target to obtain a cardiac displacement prediction regression model. By adopting the non-invasive pulmonary arterial hypertension hemodynamics monitoring method based on machine learning, the problems that an existing pulmonary arterial hypertension hemodynamics monitoring method is complex in operation and cannot meet daily rehabilitation training monitoring use are solved, and the prediction precision is improved.

A cardiac catheterization image recognition and evaluation method is disclosed. The first deep learning algorithm is used to conduct an object recognition process on the cardiac catheterization image to obtain the vessel object image. The image processing process is conducted to the cardiac catheterization image to obtain the vessel location image. The vessel object image and the vessel location image are combined to obtain the vessel contour image. The vessel type judging process is conducted to the vessel contour image to determine the type of vessel in the cardiac catheterization image. The second deep learning algorithm is used on the vessel contour image to detect the vessel occlusion location and to judge the vessel occlusion rate. Based on the type of vessel and the vessel occlusion rate at the vessel occlusion location, the cardiac catheterization image is evaluated to obtain the SYNTAX Score.

The invention relates to a calculus removal basket mechanism with a transparent film, and solves the technical problems of frequent instrument blockage and low calculus removal efficiency in a flexible ureteroscope and negative pressure sheath lithotripsy. The mechanism comprises a framework composed of a plurality of metal wires, a high-transparency film wrapping the periphery of the framework, an outer sleeve, a central guide pipe and a push-pull control device. The framework is automatically opened to form an umbrella-shaped or cup-shaped structure when being pushed out of the outer sleeve, and can be contained in a gap between the outer sleeve and the central guide pipe when being folded. In an operation, small stones are sucked out through the meshes under negative pressure, and large stones are taken out along with a lens after being intercepted by the film, so that synchronous operation of stone crushing and stone removing is realized. The high transparency of the film ensures that the surgical field is clear, the intrarenal pressure is stabilized in a safe range, and the risk of postoperative complications is remarkably reduced. The calculus removing device is simple in structure, convenient to operate, suitable for calculus of different parts such as renal pelvis and renal calyx, and high in efficiency and safety.

The utility model discloses a scapular glenoid bone tunnel preparation positioning guider for arthroscopic surgery, which comprises a guider handle, a catheter I, a catheter II and a drill point, one end of the guider handle is fixedly provided with a hollow catheter I, the drill point for preparing a bone tunnel is inserted into the catheter I, the drill point is provided with an inner core and a depth limit mark, and the catheter II is provided with a depth limit mark. The inner core is taken out after the bone tunnel is drilled, a pull wire can pass through the inner core for later use, a second hollow catheter is fixedly arranged above the first catheter in parallel, a guide rod playing a guiding role is sleeved with the second hollow catheter, the axis of the second catheter is parallel to the axis of the first catheter, and the inlet end of the second catheter is longer than the inlet end of the first catheter. By means of the ingenious design, high-precision positioning and guiding in the operation process are achieved, the accuracy and efficiency of the operation are effectively improved, the purposes that the bone tunnel is manufactured at a time, and repeated attempts and adjustment are not needed are achieved, the manufacturing quality of the bone tunnel is improved, the operation time is shortened, and meanwhile the operation risk and the occurrence rate of complications are reduced.

A wearable monitor is configured for early detection of internal bleeding events and particularly hematomas after vascular catheterization including cardiac catheterization. The wearable monitor is placed over an access location following the vascular catheterization procedure and the wearable monitor system periodically runs diagnostic test to detect changes in the tissue around the vascular access location. An emitter device may input an emitter input into the tissue and a detector device may then measure the emitter input after it has passed through the tissue, an emitter output. A computer may receive the data from the detector device and operate a program that determines changes in the tissue and in particular, pooling of blood in the tissue. The emitters may be electrodes that input an electromagnetic input, or an ultrasound emitter that inputs ultrasound sound waves, or a Near IR emitter that emits Near IR electromagnetic radiation.

1. Name of the designed product: catheter insertion tool. 2. Use of the designed product: The designed product is used as a catheter insertion tool to perform a catheterization, for example for a rapid insertion central catheter. 3. Design points of the designed product: in shape. 4. Picture or photograph best indicating the design points: perspective view 1. 5. Other circumstances or explanations: natural break lines in the product view indicate omitted parts.

Aspects of the instant disclosure relate to various types of medical catheters with a deformable body that deflect in response to a force exerted on the catheter tip. A magnetic field sensor and permanent magnet respectively coupled on either side of the deformable body are used to determine a change in a magnetic field associated with the deflection of the catheter tip. Controller circuitry may receive a signal from the magnetic field sensor indicative of the deflection of the deformable body and associate the signal with the force exerted.

A mask frame, comprises a central conduit connection aperture and lateral arms having a 3-D curvature. The lateral arms extend: outwardly from a center of the frame, rearwardly, towards the patients ears, and upwardly, along a vector passing from below the nose to a point between the temple the top of the ear. The lateral arms "twist" along their length, such that a bottom margin of an end of each lateral arm is positioned further away from a notional vertical plane passing through the centre of the conduit connection aperture than a top margin. Also provided is an anti-rotation feature which limits or prevents rotation between straps of a headgear, and the mask frame. Further provided is a buckle for a closed loop headgear the buckle being formed with a plurality of openings and posts configured to form an angled headgear strap path through the buckle through which part of a headgear strap loop can pass. The buckle also comprises a friction loop opening through which a further of the headgear strap loop can pass, the angle of the angled path being such that the further part of the headgear strap loop frictionally engages the friction loop opening. 20 24 22 72 63 11 O ct 2 02 4 2 0 2 4 2 2 7 2 6 3 1 1 O c t 2 0 2 4

The utility model relates to medical instrument technical field provides a kind of catheter assembly and steam ablation equipment for peripheral blood vessel steam ablation, and the catheter assembly for peripheral blood vessel steam ablation includes central catheter, balloon catheter, balloon structure and steam generating device, balloon catheter is sleeved outside central catheter, balloon catheter is suitable for liquid and gas to be introduced;Balloon structure is located outside balloon catheter, and balloon structure is communicated with the space in the tube of balloon catheter, and balloon structure is suitable for expansion and contraction;Steam generating device is located in balloon catheter, and steam generating device is used to convert liquid into steam, and steam is used to fill balloon structure.The utility model's catheter assembly for peripheral blood vessel steam ablation, liquid is converted into steam by steam generating device to fill balloon structure, while multilayer balloon catheter structure and pressure monitoring design effectively reduce the risk of blood vessel rupture, with the advantages of accurate controllable, minimally invasive efficient, reduce the risk of blood vessel rupture.

The invention discloses a direction and depth controllable endoscope operation depth limiting device and a using method, and belongs to the technical field of spine endoscopes, the direction and depth controllable endoscope operation depth limiting device is characterized in that a direction locking mechanism is arranged on a depth limiting base body, and the direction locking mechanism is used for fixing the device to the skin surface of an operative incision to prevent the depth limiting device from rotating; the hollow catheter is connected to the depth limiting base body, the hollow catheter forms a channel for an endoscope to pass through, the insertion depth of the endoscope is limited through the locking piece, in addition, water suction holes are formed in the bottom of the base, and normal saline injected into a wound can be sucked away through the water suction holes. By arranging the direction locking mechanism, the circumferential position of the device can be flexibly adjusted and locked in an operative incision, rotation of the limiting device in the operation is effectively prevented, the stability of the endoscope operation direction is ensured, and drainage of perfusion saline water in the endoscopic operation is facilitated.

The present disclosure relates to central venous catheters used in the healthcare sector, and comprises coating the surfaces of temporary central catheters with multilayer film structures containing resveratrol and acetylsalicylic acid groups to form a nanocomposite structure providing antibacterial properties and clot-formation preventing activity. By means of the strong antioxidant and anti-inflammatory properties of resveratrol and the antiplatelet effect of acetylsalicylic acid, antimicrobial properties are imparted to the catheter surface, and the risk of infection development during long-term catheter use is reduced.

A method for treating or repairing a damaged spinal disc of a patient may include inserting, using medical imaging, a shaft with a lumen extending from an exterior of a patient to the damaged spinal disc, dispensing copper particles, using the lumen, to the damaged spinal disc, and removing the hollow shaft from the patient. A system may include a syringe and copper particles in the syringe. A kit may include copper particles, and at least one of a guidewire, one or more dilators, a tubular retractor, a disposable endoscope, a disposable laser fiber; an endoscopic rongeurs, indigo carmine dye, or a fluid adaptor.

Rapidly insertable central catheters ("RICCs") and methods are disclosed. A RICC can include a first section of a first polymeric material in a distal portion of a catheter tube, a second section of a second polymeric material proximal of the first section, and a tapered junction therebetween. The first polymeric material has a first durometer. The second polymeric material has a second, lesser durometer. The junction is formed of the second polymeric material or a third polymeric material having a third durometer closer to the second durometer than the first durometer. The first section has a proximal portion disposed in a receptacle of the junction. When the RICC is inserted into an insertion site of a patient, a proximal lumen surface of a distal portion of the junction smoothly transitions onto a proximal lumen surface of the proximal portion of the first section without edges that catch on the skin.

The invention discloses a system and method for diagnosing pulmonary tuberculosis-pulmonary arterial hypertension through artificial intelligence chest CT imaging, and the system comprises a data acquisition module which is used for collecting a chest CT image of a patient in the supine position full inspiration period, and exporting the CT image in a DICOM format; the data processing module is used for carrying out full-lung automatic segmentation and lung lobe segmentation VTDLT calculation by using an AI algorithm through AI image analysis software; the quantitative analysis module is used for outputting the damage volume and the number and distribution of the affected lung lobes; the risk prediction module is used for combining the VTDLT with clinical parameters to construct a PH risk prediction model; according to the application, the pulmonary arterial hypertension is screened by combining CT imaging with an artificial intelligence algorithm, an original mode of screening through right heart catheter examination is not changed, a noninvasive, early-stage and accurate PH screening tool is provided for TDL patients, the use requirements of RHC are reduced, and the pain and medical burden of the patients are relieved.

The application belongs to the technical field of preparation process and equipment of high-performance therapeutic platelet-rich plasma, and specifically to the field of online ultrasonic treatment for platelet-rich plasma, and relates to an online ultrasonic activation device and method for platelet-rich plasma, which is especially suitable for promoting the release of active substances from platelets through ultrasonic treatment and comprises a shell, the shell comprising a split first shell and a second shell, the first shell and the second shell enclosing an ultrasonic treatment chamber with open ends; a conversion joint is arranged at the opening, a hollow catheter is arranged in the ultrasonic treatment chamber, and the two ends of the hollow catheter are respectively connected with the two conversion joints and communicate with external plasma collection equipment and collection equipment through the conversion joints. The application provides an "online continuous ultrasonic treatment" scheme through modular pipeline series connection design.

A rapidly insertable central catheter ("RICC") including a catheter assembly and methods thereof are disclosed. The RICC assembly can include a RICC, an introducer, and a coupling system configured to couple the RICC and the introducer together. The catheter tube of the RICC includes a side hole in a distal end portion of the catheter tube that opens into a guide lumen that extends from the side hole to a distal end of the RICC. The introducer includes a syringe and a guide needle having a cannula. The coupling system includes a distal coupler that is slidably attached to the catheter tube proximal of the side hole. When the RICC assembly is at least in its immediate deployment state, the cannula extends through a longitudinal through hole of the distal coupler, through the side hole of the catheter tube, along the guide lumen of the catheter tube, and through the distal end of the RICC.

A device for catheterization is disclosed. Such a device includes a hollow catheter, a cylindrical sheath, and a flange through which the catheter passes. Before insertion, the sheath begins at a first opening near the catheter tip and extends into the catheter to a first circumferential fold, then back towards the catheter tip to a second circumferential fold about the tip to the exterior surface, and ends at a second opening attached to the flange. As the device is inserted up to a length, the flange abuts the cavity opening, and a corresponding length of the sheath deploys from the catheter interior, around the first and second circumferential folds, to the catheter outer surface. Once fully inserted, all, or a substantial portion, of the sheath initially positioned within the catheter has been deployed to the outer surface, thereby forming a protective barrier between the catheter and the surrounding tissues.

A rapidly insertable central catheter ("RICC") including a catheter assembly and methods thereof are disclosed. The RICC assembly can include a RICC, an introducer, and a coupling system. The coupling system is configured to couple the RICC and the introducer together. The catheter tube of the RICC includes a side hole in a distal end portion of the catheter tube that opens into a guide lumen that extends to a distal end of the RICC. The introducer includes a guide needle that extends through the distal end of the RICC when the RICC assembly is at least in an immediate deployment state. The introducer is configured to be actuated by a single finger of one hand while the distal end portion of the introducer is held between the thumb and another finger or fingers of the same hand. The coupling system includes a distal coupler that is slidably attached to a proximal end of the side hole of the catheter tube.

A wearable monitor is configured for early detection of internal bleeding events and particularly hematomas after vascular catheterization including cardiac catheterization. The wearable monitor is placed over an access location following the vascular catheterization procedure and the wearable monitor system periodically runs diagnostic test to detect changes in the tissue around the vascular access location. An emitter device may input an emitter input into the tissue and a detector device may then measure the emitter input after it has passed through the tissue, an emitter output. A computer may receive the data from the detector device and operate a program that determines changes in the tissue and in particular, pooling of blood in the tissue. The emitters may be electrodes that input an electromagnetic input, or an ultrasound emitter that inputs ultrasound sound waves, or a Near IR emitter that emits Near IR electromagnetic radiation.

The utility model discloses an expandable urethra incision knife which comprises a handle assembly, a catheter assembly and a blade assembly. Wherein the handle assembly comprises a first handle and a second handle which are hinged together; the catheter assembly comprises a hollow catheter and a traction piece arranged in the catheter. The blade assembly comprises a tooth-shaped blade and a blade protection piece hinged to the tooth-shaped blade. The tooth-shaped blade is more durable than a common blade, the sharp face is not prone to becoming blunt to affect the cutting effect, the blade assembly is provided with a one-way opening in combination with the blade protection piece, the cutting direction and depth can be conveniently controlled in the operation process, and urethra accidental injury is avoided; the spring assists in controlling the opening force of the first handle and the second handle, and in cooperation with the moving state of the blade assembly, damage of the blade to the endoscope body channel and the urethra can be reduced. According to the technical scheme, the defects that in the prior art, the operation failure rate is high, and the urethrostenosis re-occurrence rate is high are overcome.

An interventional handle and an interventional system are disclosed. The interventional handle includes a screw shaft (10), a ball nut (20), and a drive assembly (30). The screw shaft (10) defines a through hole (12) that penetrates the screw shaft (10) along its axis and is fitted for coaxial insertion of a catheter assembly (40). The screw shaft (10) is fitted to be coaxially connected to the catheter assembly (40). The ball nut (20) engages with the screw shaft (10) and is circumferentially rotatable around the screw shaft (10), limiting the displacement of the screw shaft (10) along its axis. The drive assembly (30) is fitted to drive the ball nut (20) to rotate the screw shaft (10) circumferentially, causing axial movement of the screw shaft (10). In this configuration, the catheter assembly (40) is coaxially inserted into the through-hole (12) of the screw shaft (10) and is coaxially coupled to the screw shaft (10), so that only axial force acts on the screw shaft (10). This effectively overcomes the problems associated with conventional eccentric catheters (03).

An interventional handle and an interventional system are disclosed. The interventional handle includes a screw shaft (10), a ball nut (20) and a drive assembly (30). The screw shaft (10) defines a through bore (12), which extends therethrough the screw shaft (10) along its axis and is adapted for coaxial insertion of a catheter assembly (40) therein. The screw shaft (10) is adapted for coaxial connection with the catheter assembly (40). The ball nut (20) is in engagement with the screw shaft (10) so as to be rotatable circumferentially around the screw shaft (10) and is restricted from displacement along the axis of the screw shaft (10). The drive assembly (30) is adapted to drive the ball nut (20) to circumferentially rotate around the screw shaft (10), causing axial translation of the screw shaft (10). With this arrangement, since the catheter assembly (40) is coaxially inserted in the through bore (12) of the screw shaft (10) and coaxially coupled to the screw shaft (10), it exerts only axial forces on the screw shaft (10), effectively overcoming the issues associated with a conventional eccentric catheter (03).

The invention relates to an anchoring balloon solid catheter. The anchoring balloon solid catheter comprises a base, a connecting tube and a balloon, an inner cavity is formed in the base; the connecting pipe comprises an outer pipe layer, a solid rod and a channel, the solid rod is wrapped with the outer pipe layer, one end of the outer pipe layer is connected with the base, the channel is located in the outer pipe layer, one end of the channel is communicated with the inner cavity, the channel extends in the axial direction of the solid rod, and the channel is communicated with the outer pipe layer. The channel is staggered from the central axis of the solid rod; one end of the balloon is connected with the end, away from the base, of the connecting pipe, and the balloon is communicated with the channel. According to the scheme, it can be ensured that the catheter is powerful in pushing and not prone to being bent.

A catheter system can include an outer catheter adapter, an outer catheter having an outer catheter lumen extending therethrough, and an inner surface forming the outer catheter lumen. The catheter system can also include an inner catheter adapter, an inner catheter lumen extending through the inner catheter adapter, and an inner catheter extending distally from the inner catheter adapter such that the inner catheter is disposed within the outer catheter lumen and the inner catheter and the inner catheter adapter are configured to move relative to the outer catheter and the outer catheter adapter between a proximal position and a distal position.

Described herein are embodiments directed to embodiments of a nasal cannula assembly that generally comprises a pair of hollow cannula posts that extend from a center cylinder. Oxygen is pressurized to flow into the center cylinder and out through outlet ports in the terminating ends of the cannula posts. A pair of nasal shields are fixedly attached to the cannula posts. The nasal shields have an outward facing convex curved outer surface that can be flush with the post terminating ends. The pair of nasal shields each have a nasal shield aperture that aligns with the outlet ports. The nasal shields are configured to essentially cover a pair of human nostrils.

The utility model relates to the technical field of epoxy resin production, in particular to an epoxy resin production stirring mechanism with a cleaning function, which comprises a stirring barrel, a cross support is vertically arranged inside the stirring barrel, and a stirring mechanism is arranged outside the cross support; a sealing frame is fixedly installed at the top end of the cross-shaped support, a lifting mechanism is arranged between the sealing frame and the cross-shaped support, and a rotating mechanism is arranged between the stirring mechanism and the lifting mechanism. By arranging the lifting mechanism, the rotating mechanism and the water path system, after stirring is completed, the pressing plate can be driven by the electric push rod to drive the rack to move, then the eccentric guide pipe rotates, the spraying hole and the guide groove are overlapped, water is conveyed to the spraying hole through the water pump to be sprayed out, and automatic cleaning of the inner wall of the stirring barrel is achieved.

The utility model belongs to the technical field of central venous catheters, and particularly relates to a thrombus filtering type central venous catheter which comprises an inner tube and an outer tube, the two ends of the inner tube are fixedly connected with a safety lock catch and a far end respectively, one end of the safety lock catch is fixedly connected with a mounting sleeve, and an adjusting threaded column is screwed in the mounting sleeve in a threaded mode. The outer wall of the adjusting threaded column is fixedly sleeved with a first adjusting cap, a pull pipe is movably sleeved between the inner pipe and the outer pipe, and the end, away from the adjusting threaded column, of the outer pipe is fixedly connected with a near end. Under the action of mutual cooperation of the mounting sleeve, the adjusting threaded column, the first adjusting cap, the first mounting cap, the second mounting cap, the pull tube, the pull ring, the filter screen fixing end, the thrombus filter screen and the elastic telescopic sleeve structure, a filter screen device capable of immediately adjusting the position and recycling thrombus is additionally arranged at the far end of the central catheter; and in the process of placing the central catheter, thrombus is filtered by adjusting the filter screen.