2688results about "Catheter" patented technology

An implantable intratumoral infusion catheter comprises an intratumoral catheter formed of an elongated body having an internal lumen. An anchor mechanism is coupled to the elongated body. The anchor mechanism is configured to interact with a tumor or surrounding tissue to retain the catheter in the tumor.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

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.

An improved catheter is provided for accessing a site in a patient's vasculature, delivery a device or instrument to the site, removing an obstruction(s) from a blood vessel, and / or for retrieving a clot / thrombus in the neurovasculature for the treatment of stroke. The catheter has a collapsed state sufficiently small and flexible for easier delivery through challenging vasculature and also has an expanded state sufficiently sized and robust for removing the obstruction. The catheter may include a self-collapsing and expanding mechanism to transition a portion of an outer tube (e.g., a braided portion) between the collapsed and expanded states. Such mechanism may include an inner actuator tube slidable over an actuation wire to collapse a plurality of struts engaged with the actuation wire, thereby collapsing the braided portion. The catheter may also include an intermediate coiled tube for reinforcing the braided portion in the expanded state.

The application provides a neuro-morphic system for biological sensing and drug delivery of intubation medical equipment, which is mainly composed of a specific sensing module, a neuro-morphic analysis module and a signal post-processing unit. The specific sensing module comprises a thin film field effect transistor and an ion conductive polymer adaptive layer. The neuro-morphic sensitive array and the signal post-processing unit are used for recording and processing the signals monitored by the biochemical sensing module. The annular neuro-morphic system for biological sensing of intubation medical equipment in the application can capture local stress concentration caused by intubation micro-displacement and abnormal pressure between the intubation and the tissue. The influence of dynamic loads such as respiratory motion and blood flow pulsation on the intubation is analyzed, the occurrence of mechanical complications is reduced, and the sensitivity and specificity of abnormal early warning are significantly improved.

The present specification relates to an ultrasonic probe (100) comprising: an electronic chip (110) having a front face (110A) and comprising a substrate (111) and at least one micro-machined ultrasonic transducer (210) in and on the substrate and on the front face; an electrically insulating protective layer (130) covering the at least one transducer; and a metallic shielding layer (140) on the protective layer, the shielding layer forming an electromagnetic shield of the at least one transducer.

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 relates to the field of hemodialysis catheter dressing discloses a long -term hemodialysis catheter dressing, including dressing one, the rear surface fixed connection of dressing one has dressing two, the lower surface of dressing one is provided with fixed component, the inner surface of dressing one is provided with observation subassembly, the fixed component includes the adhesive layer, the adhesive layer fixed connection is in the lower surface of dressing one, the lower surface bonding of adhesive layer has the isolation paper, the lower surface fixed connection of dressing two has viscose, the lower surface bonding of viscose has the release paper, in the utility model, through fixed component cooperation, first utilize the viscose and release paper of dressing two and carry out preliminary positioning, can give out the hand to hold the catheter and ensure that the position does not deviate when fixing, then through the adhesive layer of can fix dressing one, can further enhance the fixed effect to hemodialysis catheter, avoid the catheter deviation and the outfall, guarantee dialysis treatment to carry on smoothly, reduce the patient's suffering and medical cost.

The utility model relates to the technical fields of drainage tube especially, it is a kind of medical drainage tube device including drainage tube, flushing channel, locking assembly, external pipe, flushing assembly, effusion bag and negative pressure drainage connector, the middle part of drainage tube is provided with telescopic corrugated drainage tube, flushing channel is set up on the inner wall of drainage tube, the middle part of flushing channel is provided with corrugated flushing channel, locking assembly is set up in the outside of telescopic corrugated drainage tube, external pipe is set up in the side of drainage tube, external pipe is communicated with flushing channel, flushing assembly is connected with external pipe, effusion bag is connected with one end of drainage tube, negative pressure drainage connector is set up in the front end of drainage tube, wherein, by the cooperation of each component, the purposes of abdominal cavity and other parts drainage function can be realized, change drainage tube length and the function of cleaning drainage tube are realized simultaneously.

A catheter tube (102) includes an inner conduit (108) and a reinforcement structure (112). The reinforcement structure includes a coiled wire (118) surrounding the inner conduit and a braided wire assembly (120) surrounding the coiled wire. The reinforcement structure is configured to cause the inner conduit to resist radial deformation as a medical device is moved through the inner conduit. A medical intervention system includes the example catheter and an example medical device that can be deployed and implanted using the catheter (100).

The present application relates to the technical field of medical devices, and provides a drainage tube and a drainage apparatus. The drainage tube comprises a drainage portion, a porous loose structure, and a granulation tissue blocking structure. The drainage portion is provided with a first drainage channel, and is further provided with a first drainage hole. The first drainage hole is in communication with the first drainage channel. The porous loose structure is wrapped around the drainage portion. The granulation tissue blocking structure is wrapped around the porous loose structure and is provided with a second drainage hole. The second drainage hole, the porous loose structure, the first drainage hole, and the first drainage channel are in communication. By providing the granulation tissue blocking structure, the drainage tube can, while satisfying negative pressure suction, prevent granulation tissue from growing into the porous loose structure, thereby reducing bleeding of granulation tissue and improving the therapeutic effect of negative pressure drainage.

A system providing a haptic feedback improving its functionality includes a haptic feedback device and communicates with a catheter. In operation, the haptic feedback device forms a strap and each of the plurality of actuating regions is arranged along a circumference a of the haptic feedback device. Further, in operation spatial information is transmitted from at least one of a plurality of sensing locations to the haptic feedback device and in accordance with the transmitted spatial information at least one of the plurality of actuating regions is actuated to provide the haptic feedback.

A catheter including an expandable member, an outer catheter body including an outer catheter lumen, an inner tube positioned within the outer catheter lumen and defining an inner tube lumen, and an ultrasound transducer positioned in the expandable member. The transducer may include a transducer body comprising an inner surface defining a transducer lumen, wherein the transducer lumen is fluidically connected to the inner tube lumen, a transducer support member positioned at a distal portion of the transducer body and defining one or more fluid apertures through which the fluid is configured to flow from the transducer lumen into the expandable member, and a plurality of electrodes extending along at least a first portion of an outer surface of and at least a second portion of the inner surface of the transducer body.

A working wire for a biological sensor is disclosed. The working wire includes a substrate comprising cobalt-chromium (Co-Cr) alloy or Nitinol alloy, a platinum layer comprising platinum on the substrate, and a membrane layer comprising a biological membrane applied over the platinum layer.

In some examples, a gastroretentive system includes a dissolvable outer capsule, a body disposed within the outer capsule, at least one expandable and collapsible member coupled to the body and configured to be disposed within the outer capsule in a collapsed condition when the outer capsule is present and to transition to an expanded condition without the outer capsule, the expanded condition being too large to pass through a human pylorus, wherein at least one of the body and the at least one expandable and collapsible member includes a drug product.

The application discloses a cardiovascular event prediction method, device, equipment, storage medium and program product. The method comprises the following steps: acquiring a multi-dimensional first physiological characteristic of a first target object, wherein the first physiological characteristic at least comprises a sleep respiration monitoring parameter and a clinical cardiovascular metabolism parameter; mapping the multi-dimensional first physiological characteristic to a plurality of numerical values representing preset phenotype categories through a linear transformation layer of a cardiovascular event prediction model, to obtain a first score corresponding to each phenotype category; wherein the preset phenotype categories are obtained through clustering analysis on multi-dimensional physiological characteristics of a plurality of object samples; the plurality of object samples are a plurality of objects that have experienced a cardiovascular event; and determining a first risk level of the first target object in terms of the cardiovascular event based on the first score corresponding to each phenotype category and through a preset risk level determination rule. According to the embodiment of the application, the accuracy of cardiovascular event risk prediction can be improved.

The application discloses a wrist hemostasis system and method based on preoperative evaluation, and relates to the technical field of intelligent medical treatment, and comprises the following steps: acquiring patient data and corresponding medication data, inputting the patient data into a preset weighted scoring model, and outputting a preoperative bleeding risk level; the patient data comprises platelet count, international normalized ratio (INR), and activated partial thromboplastin time (APTT); according to the preoperative bleeding risk level, setting an individualized compression initial pressure and a basic compression time length; the compression initial pressure is a fixed multiple of systolic pressure, and the compression time length is a matching value in a preset interval; after the hemostasis device is controlled to be boosted to the initial pressure, a stepwise decompression program is executed, the compression pressure is gradually reduced, and a distal PPG signal is synchronously monitored; when the PPG signal is stable and reappears, the corresponding pressure is recorded as a blood flow recovery pressure; while reducing the risk of bleeding and rebleeding, the safety, stability and individual adaptation degree of the wrist hemostasis process are improved.

This utility model discloses a catheter fixation device, including an adhesive part and a catheter fixator connected to the adhesive part. The adhesive part includes an adhesive layer and an anti-adhesive layer. A release layer is detachably connected to the lower surface of the adhesive layer. The adhesive layer is composed of a non-woven fabric substrate and self-adhesive silicone gel. The catheter fixator includes a base connected to the upper surface of the anti-adhesive layer and a catheter fixing clip rotatably connected to the base. The non-woven fabric substrate coated with self-adhesive silicone gel is used as the adhesive layer, and its surface properties significantly reduce the adhesion to hair. Compared with traditional adhesive materials, it can effectively avoid sticking to the patient's body hair when pasting, adjusting, or removing the device, significantly reducing the patient's pain and discomfort, and improving the comfort of use. At the same time, the adhesive part is very firm when it is peeled off from the patient and then immediately re-pasted, thus preventing secondary detachment; while the adhesive of traditional catheter fixation tape is greatly reduced after being peeled off from the patient, and it is easy to detach again when re-pasted.

A non-transitory computer-readable medium storing a computer program capable of providing an easy-to-interpret image. A computer acquires, according to a computer program, a signal data set by a first inspection wave emitted in a direction inclined at a first angle with respect to a longitudinal axis direction of an imaging core used in a catheter. Then, the computer constructs an image obtained by using a direction inclined at a second angle different from the first angle with respect to the longitudinal axis direction of the imaging core as an observation target, based on the acquired signal data set.

The utility model provides a kind of adjustable outer sheath, including sheath and knob being rotationally arranged in the tail end of the sheath, the inside of the pipe wall of the sheath is equipped with spiral channel, the spiral channel is arranged along the axial direction of the sheath, the inside of the spiral channel is equipped with tightening silk, one end of the tightening silk is fixedly connected with the front end of the sheath, the other end of the tightening silk is connected with the knob by breaking the outer wall of the sheath. By rotating knob to pull tightening silk, so that sheath can be retracted under the action of tightening silk, effectively avoid the problem that sheath is difficult to recover due to vasospasm or initial blood vessel passive expansion and other reasons.

This computer program causes a computer to execute processing of: acquiring, on the basis of a signal detected by a catheter inserted into a hollow organ, a plurality of first medical images generated along an axial direction of the hollow organ; extracting, from the acquired plurality of first medical images, a plurality of second medical images which are at a prescribed interval along the axial direction of the hollow organ; identifying a type and a region of an object included in the extracted plurality of second medical images, by inputting the plurality of second medical images into a learning model which outputs, in response to input of a medical image, information related to an object included in the medical image; determining a reference image from among the plurality of second medical images on the basis of the type and the region of the object; and inputting, to the learning model, the first medical images within a prescribed range in the axial direction of the hollow organ from the reference image.

An image processing device for causing a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue includes: a control unit configured to form, in the three-dimensional data, a cutting region exposing a lumen of the biological tissue in the three-dimensional image, and cause the display to display, together with the three-dimensional image, a two-dimensional image representing a cross section of the biological tissue and a region corresponding to the cutting region in the cross section.

The present application belongs to the technical field of medical devices, and discloses a stripper, which comprises a pipe body, a flow channel formed between a first end and a pipe outlet, a plurality of mutually isolated cavities separated by the flow channel, each cavity being provided with a medicine inlet hole and a medicine outlet hole, a plurality of medicine inlet joints arranged in sequence at the first end and connected in one-to-one correspondence with the medicine inlet holes, and a sealing head detachably connected to the second end. The first end of the pipe body is closed, the second end is open, the interior of the pipe body is provided with a plurality of mutually isolated cavities, each cavity is provided with an independent medicine outlet hole, and anesthetic can be input into the interior of the pipe body through the medicine inlet hole connected with the medicine inlet joint. After the anesthetic flows out of the pipe outlet, the pipe outlet is blocked by the sealing head. At this time, when the anesthetic continues to be input into the medicine inlet hole, the anesthetic can only flow out of the medicine outlet hole. During the stripping operation, the anesthetic can perform multi-region anesthesia in the intravenous blood vessels, and the stripping and anesthesia can be performed simultaneously.

To provide an embolic protection device comprising a catheter.SOLUTION: The present invention includes an embolic protection device comprising: a catheter having a self-expanding embolic filter that is disposed around the catheter proximal to a distal portion, where the embolic filter comprises a frame, and the frame defines an opening of the embolic filter that faces the distal end of the catheter; a deployment mechanism that is disposed around at least a portion of the catheter, where the deployment mechanism is longitudinally movable relative to the catheter, the deployment mechanism is configured to contain the embolic filter in a collapsed configuration, and the embolic filter is configured to self-expand upon longitudinal retraction of the deployment mechanism; and a wire coupled to the frame for expanding the size or diameter of the embolic filter opening.SELECTED DRAWING: None

Disclosed is a system for determining a location and configuration of an expandable member. A flexible coil can be provided on a shape changing portion, such as an expandable portion, to measure a signal as the shape changes.