337 results about "Tourniquet" patented technology

An internal compression tourniquet catheter system and method for controlling hemorrhage from wounds, particularly penetrating wounds. Its construction includes an inflatable member constructed of very thin, flexible, biocompatible, and nonelastic and puncture resistant material such that when deflated it lies flat and can be wrapped around the catheter shaft, which passes within and has a lumen to inflate it, to minimize overall diameter when deflated for insertion into the tissue track created by the wounding agent. The inflatable member is of large potential volume enabling full inflation with near zero internal pressure when unconstrained externally. When positioned within a wound track and inflated, the gas or liquid injected into the balloon lumen creates pressure because its expansion is constrained by the tissues of the wound, and that pressure is transmitted directly to the surrounding tissue of the wound track. The pressure exerted on the tissue can be precisely measured and controlled, automatically if appropriate, such that sufficient pressure is applied to tamponade bleeding, but not damage tissue. Since the balloon is of large potential volume, it can easily expand to fill and compress small, large, and irregular wound tracks and can successfully tamponade wounds that smaller, elastic balloon catheters would be unable to tamponade. The catheter system includes means to assist insertion into the wound track, including a rounded or bulbous exploring tip and an internal stylet with an external orientable handle. The distal end of the catheter-stylet assembly can be bent slightly to allow following a curved or irregular wound track, such wound track navigation further assisted by twisting the stylet handle to orient the bent catheter tip within the wound track.

A simulator trains for hemorrhage control using hemostatic agents, tourniquets, and / or other hemorrhage control techniques in a simulator that works with a wide variety of existing human surrogates. The simulator merges a live video feed of the surrogate and trainee's hands (or objects interacting with the surrogate) with a computer-generated visual representation of the wound and hemorrhaging blood to provide an immersive display experience to the trainee without requiring different surrogates for different simulated wounds. The trainee may wear pulse-generating glove(s) that simulate the patient's pulse where the trainee's finger tip contacts the surrogate. A sensorized substrate (e.g., load sensors, haptic output generators) may automatically be moved between the trainee and the surrogate to sense interaction with the surrogate and provide haptic feedback. The substrate may replace the surrogate altogether. The simulator may alternatively simulate events and objects other than wounds and humans.

A junctional and truncal tourniquet and a hip-girdling pelvic sling device for maintaining a desired amount of tension surrounding a person's hips and pelvis to securely support and stabilize a pelvis that has been fractured and for securing a pressure applying device to a person with a preferred amount of tension so that blood vessel-occluding pressure can be applied. Areas of mating types of fastener material such as mating hook-bearing fastener material and loop pile fastener material are arranged on the device to enable a strap to be secured at various effective lengths to provide a wide range of adjustability. The device may include inflatable bladders, and may be wrapped around a patient's torso to occlude blood vessels proximal to an injury on a limb. A bladder may be expandable in distinct tiers and may carry a separate and removable pressure-concentrating fitting. An auxiliary strap may be included and may be used to keep the junctional and truncal tourniquet in place on a patient's torso.

Methods for adaptive cuff inflation for the purposes of occluding a limb of a subject include inflating a cuff to a pressure at or above limb occlusion pressure and periodically deflating the cuff to detect amplitude of oscillometric oscillations reaching or exceeding a predetermined threshold, whereby indicating that the cuff pressure has reached an updated systolic blood pressure. Selecting the cuff to be wide enough to define limb occlusion pressure at or below the systolic blood pressure assures that this maneuver does not compromise cessation of blood flow to the limb. Devices are disclosed configured to operate in at least two of the following three operating modes: a tourniquet mode, a remote conditioning mode and a blood pressure monitoring mode.

The present invention discloses an adhesive tape to secure an intravascular catheter to the skin of a patient at an intravascular site comprising: (a) a strip of tape having adhesive on all of one side except for portions at the ends, the strip of tape having a length of about 15 to about 300 mm and width of about 4 to about 30 mm; (b) two removable covers affixed near the ends of the adhesive side of the strip, wherein the removable covers are separated from each other by a centrally located portion of the strip of tape; and (c) a third removable cover affixed to the central portion of the adhesive side of the strip of tape. The subject invention further reveals a sterile intravascular starter kit, said kit being comprised of the adhesive tape for an intravascular catheter, a tourniquet, a gauze pad, an antiseptic skin preparation device, optionally a towel, and a clear occlusive dressing.

A timer for tourniquet, adapted for application in a surgery, emergency or military situations to stop arterial blood loss in an injured limb, which is optionally activated by use of the tourniquet and / or optionally provided in association with a monitor for a plurality of tourniquets.

The present invention discloses an adhesive tape to secure an intravascular catheter to the skin of a patient at an intravascular site comprising: (a) a strip of tape having adhesive on all of one side except for portions at the ends, the strip of tape having a length of about 15 to about 300 mm and width of about 4 to about 30 mm; (b) two removable covers affixed near the ends of the adhesive side of the strip, wherein the removable covers are separated from each other by a centrally located portion of the strip of tape; and (c) a third removable cover affixed to the central portion of the adhesive side of the strip of tape. The subject invention further reveals a sterile intravascular starter kit, said kit being comprised of the adhesive tape for an intravascular catheter, a tourniquet, a gauze pad, an antiseptic skin preparation device, optionally a towel, and a clear occlusive dressing.

A tourniquet for application to a patient's limb in an emergency situation, and a method for its application. The tourniquet includes a tension-sensing mechanism used to establish a baseline tension in a loop around an injured limb, and a tension-increasing mechanism to reduce the circumference of the loop and tighten the tourniquet as required beyond the baseline tension. The tension-sensing mechanism may be incorporated in a buckle in which when sufficient tension is developed in the loop a pin protrudes to engage and maintain tension in a strap member which is part of the loop. A latch may be incorporated in the buckle to keep it in a condition in which the pin protrudes to engage the strap and maintain the baseline tension. A release tab operable to release the latch is located where it is protected against inadvertent operation.

The invention discloses a high-strength high-resilience medical TPE (thermoplastic elastomer) tourniquet which is made of raw materials including SEBS (styrene-ethylene-butylene-styrene), PP (polypropylene), amino containing oxidized graphene and white oil. The invention further discloses a method for preparing the high-strength high-resilience medical TPE tourniquet under the condition of vacuum injection molding.

The invention provides an article of clothing having a tourniquet affixed to the clothing at one end of the tourniquet, the tourniquet comprising a band comprised of an elastic and flexible material, the band having a width and a length, a first end and a second end, and a first face and second face, where at least a portion of the first face comprises hook-type fastener means, and where the second face comprises loop-type fastener means.

The invention discloses a TPE composition containing SEBS, PP, and quaternary ammonium salt modified chitosan. The invention also discloses a method for preparation of a high performance antibacterial medical tourniquet prepared from the TPE composition under the condition of vacuum injection molding.

A training tourniquet for use in training a user or another person, such as a medic, includes a non-functioning tensioning mechanism to model application of developing a tensile force in a strap of a tourniquet. The training tourniquet has particular application to training field personnel, such as medics and soldiers as to how to apply a tourniquet, without actually creating a compressive force that could damage a person's tissue during the training or practice sessions. In one embodiment, an inoperative windlass can be rotated to simulate the action necessary to create tension in a strap of a real tourniquet, however, the inoperative windlass spins around without actually tightening a strap of the training tourniquet.

The present invention relates a tourniquet, where tightening of the tourniquet is performed by linear motion by pulling a pull-cord. The tourniquet comprises a tensioning device and a strap. The first end of the strap is coupled to the tensioning device. The second end of the strap is wrapped around a limb and fixed to the tensioning device. The tightening of the tourniquet is achieved by pulling a pull-cord. Linear motion by the pull-cord is translated into winding up the strap inside the tensioning device, and thereby achieving a time-effective tightening of the tourniquet without the need of high forces.

A tourniquet includes a flexible and stretchable strap of neoprene material supporting a relatively rigid stay on an inner surface of the strap. A buckle is secured to one end of the strap and the other end is looped through the buckle and can be tightened about a person's limb at a location of a severe wound where there is severe external or internal bleeding that must be stopped. The stay is position at or above the bleed site and the strap tightened enough to apply sufficient cuff pressure by the stay to stop the bleeding, while the flexible and stretchable strap applies a relatively lower cuff pressure to permit continued venous blood flow across the strap in the surrounding uninjured region of the limb.

A tourniquet with an attached timer. The tourniquet includes a main strap. The main strap is an elongated strap having a first end opposite a second end, and an upper surface opposite a lower surface. The timer is attached to the main strap. The timer is used to keep track of the amount of time the tourniquet is applied to the user.

There are many inventions described herein as well as many aspects and embodiments of those inventions. A thigh compression device and technique to control, time, delay and / or prevent excessive early venous enhancement relative to arterial enhancement and thereby improve and / or enhance MRA images, including peripheral MRA images. In one embodiment, the present invention uses a curved strip of material which is longer on the superior edge and shorter along the inferior edge. When wrapped around the conical or conal-like shape of the thigh of a subject (for example, a human), the thigh compression device more uniformly conforms to and / or fits around the thigh, providing more even / uniform compression as well as reducing, minimizing and / or eliminating significant movement of the thigh compression device towards the knees of the subject. Notably, a snug fit on the thighs may also enable the thigh compression device to be inflated with less fluid (for example, air) which is faster and less cumbersome for the operator.

A tissue constriction device comprises a tissue-surrounding part defining a central, tissue-receiving opening which, when in a tissue-receiving configuration, has a first diameter and which, when in a tissue-constriction configuration, has a second diameter less than the first diameter, at least a shape memory portion of the tissue-surrounding part being formed of a shape memory material with the tissue-constriction configuration corresponding to a memorized shape of the shape memory portion.

The invention discloses a method for estimating pulse pressure of a central aorta by using pressure pulse wave vibration signals of a tourniquet. The method comprises the steps of (I) providing an equation for estimating the pulse pressure of the central aorta; (II) measuring the pressure pulse wave vibration signals in the tourniquet, wherein the pressure pulse wave vibration signals comprise brachial artery systolic pressure, brachial artery diastolic pressure and the pressure pulse wave vibration signal waveforms in the tourniquet; (III) averaging the pressure pulse wave vibration signal waveforms and carrying out correction by using the systolic pressure and the diastolic pressure; (IV) analyzing the corrected pressure pulse wave vibration signal waveforms to obtain a plurality of characteristic signal values, wherein the characteristic signal values are independent estimating variables of the equation of the step (I); (V) substituting the numerical value of the estimating variables into the equation for estimating the pulse pressure of the central aorta to obtain the pulse pressure of the central aorta. The invention further provides a device for estimating the pulse pressure of the central aorta by using the pressure pulse wave vibration signals of the tourniquet by using the method.

A junctional and truncal tourniquet and hip-girdling pelvic sling device for maintaining a desired amount of tension surrounding a person's hips and pelvis to securely support and stabilize a pelvis that has been fractured and to secure a pressure applying device with a preferred amount of tension so that blood vessel-occluding pressure can be applied to stem hemorrhaging. The device may be wrapped around a patient's torso and may include inflatable pressure application bladders useful to occlude blood vessels proximal to an injury on a limb. A stabilizing support device may carry an inflatable pressure application bladder and a separate and removable pressure-concentrating member. An auxiliary strap may be connected to the stabilizing support device and used to keep the junctional and truncal tourniquet and the inflatable pressure application bladder in place on a patient's torso.

A wearable hands-free casualty extraction system includes a left shoulder strap, a right shoulder strap, a securing band, and a connector strap that allow the system to be worn and secured on the body. The system is hands-free and enables evacuators to perform crucial tasks such as returning fire while evacuating a wounded casualty. A first strap mount, a second strap mount, a first extraction strap, and a second extraction strap enable the system to be tethered to an evacuator during extraction. The system may include a third strap mount, a fourth strap mount, a third extraction strap, and a fourth extraction strap for further tethering capability. The system includes a first tourniquet strap and a second tourniquet strap that are worn around the legs for rapid application to a wound. The system may be tethered at the shoulders as well as at the hips.

A modular trauma management system is provided which includes a number of multi-purpose elasticised pressure and / or support bandages combined with a modular framing support system based on a series of rods or tubes and connectors. The bandages are connectable lengthwise to like bandages to form longer bandage lengths and the modular framing system can be used to create numerous forms of splints, supports structures, crutches, walking sticks and the like. The system may include additional multi use elements that can further interact with the bandage and framing system elements such as multi-function tourniquet straps, modular stretcher elements, a traction strapping system and a versatile sling system that includes a separate multi use strap element. These components interact with the other elements in the system to enable a lightweight, highly versatile, environmentally tolerant system that can be used almost anywhere to manage an extremely wide range of trauma situations.

The invention discloses a multifunctional blood collecting container which comprises a container body and a container cover which is mounted at the top of the container body and can be opened and closed. A first drawer for placing laboratory test reports is disposed at the bottom of the container body. A test tube storage chamber used for collecting blood collecting test tubes, a syringe storage chamber for collecting polluted syringes, a needle storage chamber for collecting polluted needles, a tourniquet storage chamber for collecting polluted tourniquets are arranged disposed on the container body and above the first drawer. The test tube storage chamber, the syringe storage chamber, the needle storage chamber and the tourniquet storage chamber are independent of one another. The upper portion of the test tube storage chamber is provided with a test tube rack. The upper portion of the syringe storage chamber is provided with a syringe inlet. The needle storage chamber is provided with needle separating holes for separating needles from blood collecting syringes and insertion holes. The upper portion of the tourniquet storage chamber is provided with a blood collecting operation plate, and a retaining plate and a garbage placing plate, the retaining plate is provided with a tourniquet inlet. The lateral part, facing the container body, of the container cover is provided with a plurality of storage bags for storing medical cotton swabs or gauze.

The invention relates to a novel hemostatic device, which is composed of a dressing assembly and a hemostasis assembly, the dressing assembly comprises a medical adhesive tape, a base and medical cotton, and the hemostasis assembly comprises a protective cover, a clamping base and a tourniquet; wherein the protective cover covers the clamping base, the tourniquet is arranged in the clamping base in a pressing mode, the clamping base is connected with the base in a clamping mode, the base is fixed to the medical adhesive tape, and the medical cotton is fixed to the back face of the medical adhesive tape. A method comprises the steps that when venipuncture is conducted and a needle is not pulled out, medical cotton is aligned with a puncture hole and fixes the dressing assembly; when the needle is pulled out, the hemostasis assembly is clamped in the base of the dressing assembly; and after the needle is pulled out, the tourniquet is pressed to perform tourniquet blocking hemostasis. Thedevice adopts a split structure for pressing hemostasis, can meet the requirements of puncture needle fixation, puncture wound protection and puncture hole pressing hemostasis and protection at the same time, and can effectively improve the healing speed and reduce the bleeding amount. The trouble of long-time pressing hemostasis of a patient or medical staff is solved.

A tourniquet with audio instructions comprising: a tourniquet with a belt, clip, securing strap, and instruction module; a release switch can be activated when the tourniquet is put in use so that audio instructions are provided to the user for using the tourniquet. The invention can include the instruction module being carried by a holster that also carries the tourniquet. The instruction module can be activated when the tourniquet is removed from the holster, unfolded or manually actuated. The tourniquet can be retained in a holster and the instruction module is activated when the tourniquet is removed from the holster.

The invention discloses an intelligent training method and system for intravenous infusion. The training method comprises the following steps of performing logging in, module selecting, checking selecting, doctor advice checking, medicine selecting, nursing preparation, checking and medicine preparation, infusion apparatus preparation, checking and interpreting, hand washing preparation, bottle hanging and exhausting, blood vessel confirming, disinfecting, re-checking / exhausting, tourniquet binding, asking a patient to make a fist, punching, loosening the tourniquet, fixing an infusion patch,adjusting the dripping speed, dripping completion, pressing and pulling a needle, performing post-operation treatment, and submitting achievements, wherein the puncturing is performed by the steps ofprompting to puncture, detecting the needle feeding angle between a simulation infusion needle and a model arm, and detecting whether the feeding needle position is at a blood vessel or not, detectingthe needle feeding depth, performing blood return according to the needle feeding depth and force feedback control, prompting and recording if the puncture depth is too deep or too shallow, and if the puncture is successful, loosening the tourniquet. According to the intelligent training method and system for venous transfusion, an operator is guided to simulate a venous transfusion operation through prompting and timely feedback, and the operation is timely judged, evaluated and timely fed back to the operator.