352 results about "Hemostat" patented technology

Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair / regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats. The polyhydroxyalkanoates can contain additives, be formed of mixtures of monomers or include pendant groups or modifications in their backbones, or can be chemically modified, all to alter the degradation rates. The polyhydroxyalkanoate compositions also provide favorable mechanical properties, biocompatibility, and degradation times within desirable time frames under physiological conditions.

A method of and a system for treatment of atrial tachyarrhythmias. The system includes a set of hemostats having elongated opposing jaws carrying mechanisms for applying ablation energy along the jaws. The jaws having straight and curved configurations selected to allow arrangement of the jaws of along opposite sides of walls of a patient's atrium. Treatment is accomplished by applying of ablation energy to the walls of a patient's artria to create lines of lesion corresponding generally to incisions employed in a Maze type procedure.

A hemostat-type device for ablative treatment of tissue, particularly for treatment of atrial fibrillation, is constructed with features that provide easy and effective treatment. The device may include a swiveling head assembly that allows the jaws to be adjusted in pitch and / or roll. The device may include a malleable or articulating handle shaft, as well as, malleable or curved rigid jaws that can permit curved lesion shapes. A locking detent can secure the jaws in a closed position during the procedure. The device may include one or more remote actuators making the hemostat-type device useful for minimally invasive procedures.

The present invention is directed to wound dressings that contain a fabric made from biocompatible polymeric fibers and having flexibility, strength and porosity effective for use as a hemostat, and a porous, polymeric matrix prepared from a biocompatible, water-soluble or water-swellable polymer dispersed through the fabric; and to methods of making such wound dressings.

The present invention is directed to a hemostatic wound dressing that utilizes a fibrous, fabric substrate made from carboxylic-oxidized cellulose and containing a first surface and a second surface opposing the first surface, the fabric having flexibility, strength and porosity effective for use as a hemostat; and further having a porous, polymeric matrix substantially homogeneously distributed on the first and second surfaces and through the fabric, the porous, polymeric matrix being made of a biocompatible, water-soluble or water-swellable cellulose polymer, wherein prior to distribution of the polymeric matrix on and through the fabric, the fabric contains about 3 percent by weight or more of water-soluble oligosaccharides.

The present invention is directed to methods of making wound dressings that include the steps of contacting a fabric substrate having properties effective for use as a hemostat and containing fibers prepared from a biocompatible polymer, with a solution of a water-soluble or water-swellable biocompatible polymer under conditions effective to distribute the polymer solution substantially homogenously on and through the fabric substrate, transferring the fabric substrate to a lyophilization unit under conditions effective to maintain the homogeneous distribution on and throughout the substrate, and lyophilizing the fabric having the polymer solution distributed on and there through.

A device for promoting the clotting of blood in body cavities includes a flexible body portion; an expandable member located on the flexible body portion; and a blood clotting material attached to the expandable member. When used, insertion of at least a portion of the blood clotting material into the body cavity causes at least a portion of the blood clotting material to contact blood emanating from a bleed site. Methods of providing therapies to tube-shaped organs include the steps of providing suitable devices having expansion capabilities, positioning the devices at the appropriate bleed sites, and expanding the devices to cause blood clotting materials to contact the bleed sites. Materials that may be used as the blood clotting material include zeolites, molecular sieve materials, diatomaceous earth, clay, silica-based materials, oxidized cellulose, carboxymethyl cellulose, bioactive glass, biological hemostats, chitosan, and combinations of the foregoing.

A suture clamp and / or suture retainer and organizer device for use during a surgical procedure, including an elongated body formed of resilient material and has a plurality of spaced lateral slits through one surface. The slits are individually identified and are sized to receive and grip a surgical suture. A tapered pocket is located adjacent to and opens into each slit for receiving and retaining the nose of a hemostat attached to a suture. The device may be attached by adhesive backing or by clamps to a surgical drape or other support surface.

The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. In certain embodiments, systems and devices of the present invention find use in combination with other medical devices (e.g., surgical devices, surgical tools; e.g., hemostats, blades, scalpels). In certain embodiments, more than one energy delivery system or device of the present invention may be employed simultaneously or sequentially (e.g., for cutting and coagulation procedures).

An integrated catheter assembly for enabling diverse endoscopic in situ therapies. The assembly includes a catheter with an irrigation fluid lumen, a distal electrode tip portion that acts as a hemostat, and a cutting wire for making incisions in or ablating tissue. A cutting wire hub provides a sealing entrance for a cutting wire. An operator enables the physician to displace the cutting wire between extended and retracted positions. The cutting wire and electrode are electrically isolated. In addition, the catheter assembly may include a planar tip which, when extended outside the distal end of the assembly, assumes a substantially flat unbiased configuration for use. The apparatus of the present invention allows the physician to make incisions in or ablate tissue using electrosurgery, irrigate tissue, and cauterize or coagulate tissue without having to remove the apparatus from the working channel of the endoscope.

A hemostat comprises a non-porous patch made of a bio-resorbable tissue compatible material, said patch having a tissue-facing surface and a top surface; an optional hemostatic agent that is disposed on said tissue-facing surface or optionally dispersed throughout said patch or optionally as a separate carrier layer, and at least one aperture or slit that penetrates said patch at least partially from said tissue-facing surface to said top surface.

The present invention is directed to an integrated delivery device that is operable with one hand and provides co-delivery of a liquid medicant and a powder medicant onto a tissue or wound from a liquid medicant expression subunit and a powder medicant expression subunit. Each expression subunit having an actuator for the liquid medicant and the powder medicant contained therein that are positioned in close proximity to one other at a proximate end of said expression subunits and delivery cannulas for each of said expression subunits that positioned in close proximity to one other at a distal end of said expression subunits. The present invention also relates to method for using such integrated devices.

The invention relates to a disposable radial artery compression hemostat, which mainly comprises a screw rod, a pressure regulating board and a pressure board, wherein the center of the pressure regulating board is provided with a convex block which is cut with a screw hole in which the screw rod is screwed and connected; the pressure board is connected below the screw rod, and the periphery and the bottom part of the pressure board are coated outside with a thin film; an air bag is formed between the thin film and the pressure board; the bottom surface of the thin film is provided with a gauze cloth; the both ends of the pressure regulating board are provided with penetrating holes which are penetrated by fixed belts. The invention has the advantages that: the disposable radial artery compression hemostat with the structure combines the original spiral type with the air bag type, which can not only maintain the advantages of the two, but can also overcome the deficiencies of the two; the invention can be selected for use under different situations or be used together, so as to achieve a better hemostatic effect. Furthermore, the bottom surface of the thin film is directly provided with the gauze cloth which can not be used again after the usage, so the hemostat can not be used for the second time, and the disposable method can avoid the risk of cross infection which is caused by a plurality of uses.

An instrument for controlling bleeding includes an outer shaft having a proximal end, a distal end, and a central lumen extending to the distal end thereof, an intermediate shaft telescopically received within the central lumen of the outer shaft, the intermediate shaft having a proximal end, a distal end, and a central lumen extending to the distal end thereof, and an inner shaft telescopically received within the central lumen of the intermediate shaft, the inner shaft having a proximal end and a distal end that extends distally from the intermediate shaft. The instrument includes a hemostat disposed at the distal end of the inner shaft, and a fluid-resistant element connected to the distal end of the outer shaft and surrounding the hemostat. The fluid-resistant element has a breakable, fluid-resistant seal at a distal end thereof that protects the hemostat from fluids until the hemostat is delivered and deployed onto tissue. In one embodiment, the instrument includes an inflatable balloon to deploy and tamponade a hemostat.

An instrument for controlling bleeding includes an outer shaft having a central lumen extending between proximal and distal ends thereof, and an inner shaft disposed within the central lumen of the outer shaft, the inner shaft having a central lumen extending between proximal and distal ends thereof. The instrument has an inflatable balloon with a proximal end secured to the outer shaft and a distal end that is inverted and secured to the inner shaft. In one embodiment, the balloon has a spherical shape when the outer and inner shafts are in a first position and a toroidal shape when the outer and inner shafts are in a second position. The instrument includes an actuator for discharging a flowable material from the central lumen. In one embodiment, the instrument includes a stylet having barb-like features to attach a hemostat to the distal end of the instrument.

The invention relates to a hemostat applied after pediatric infusion, and belongs to the technical field of medical instruments. According to the technical scheme, the hemostat comprises a hemostatic frame, the lower side of the hemostatic frame is provided with a hemostatic fixed seat, the lower side of the hemostatic fixed seat is provided with fixed support legs, the lower sides of the fixed support legs are provided with telescopic support legs, telescopic regulators are arranged at the joints of the telescopic support legs and the fixed support legs, the outer sides of the telescopic regulators are provided with antiskid regulating lines, and the upper side of the hemostatic fixed seat is provided with a support seat. The hemostat is simple in structure and convenient to use, the pressing force and the pressing position can be flexibly regulated when hemostatic pressing is conducted after a child is infused, the pressing hemostasis effect is good, and the working difficulty of medical personnel is reduced.

A microfibrillar high molecular weight chitosan-based textile can be used as a hemostat. The chitosan has been treated in a nitrogen field by applying energy to ionize nitrogen in and around the chitosan textile. A single or multiple such treatments may be employed. For example, the chitosan textile may be irradiated under nitrogen using γ-irradiation, treated under a nitrogen plasma, or both.

The invention is concerned with the one-off femoral artery oppress hemostat and it includes: the pressure adjusting compasses, the center screw hole with adjustment screw that connects the compression compasses, the two opposite lead back fastener on the adjusting compasses, and the fixation band for the adjustment screw. It improves the quality and efficiency of henostasis dressing and reduces mistakes.

The medical device to remove the hubs / ends of intravenous tubing is a clamping tool that aids in quick removal and tightening of hubs and other joints in intravenous tubing. The clamping tool has curved jaws which will not break or damage the hubs while tightening or removing connections in IV lines. The clamping tool has a pair of pivotally connected arms having ring handles at one end and gripping jaws at the opposite end. At the end adjacent the ring handles, the arms have opposing ratchets or clamping surfaces which frictionally engage each other when the jaws are approximated to each other, similar to a hemostat. The gripping jaws are relatively wide, having concave openings therein adapted for encasing and gripping about 70-90% of the circumference of the hubs / ends of the intravenous tubing.

The present invention relates to plasma-based films and in particular to flexible plasma-based films. The invention further relates to and to methods of making and using the flexible plasma-based films. Embodiments of the invention have been particularly developed for making flexible plasma-based films useful as a hemostat in the treatment and / or prevention of mild to severe as well as arterial bleedings, as an anti-adhesive sheet to reduce or prevent development of surgery-induced adhesions, as a wound healing patch, as a wound dressing, or as a film useful in hernia repair. Embodiments of the invention will be described hereinafter with reference to these applications. However, it will be appreciated that the invention is not limited to this particular field of use.

The invention discloses a compression hemostat applied to esophagus and fundus ventriculi. The compression hemostat comprises a stent which can expand and is provided with a channel in the middle, and a bleeding arresting dressing fixed on the outer side of the stent. When massive hemorrhage caused by varicose veins of esophagus and fundus ventriculi occurs, the compression hemostat is placed at a bleeding position by using a stent inserter for arresting bleeding, and the bleeding arresting dressing is closely contacted with the bleeding position under the compression action of the expanding stent, so that the aim of arresting bleeding is fulfilled. The invention has the beneficial effects that: the compression hemostat is easy to operate and is convenient to use, and massive hemorrhage of esophagus and fundus ventriculi can be controlled effectively.

The invention discloses a nosal hemostat, consisting of a breather pipe and hemostatic sponge. The hemostatic sponge is wrapped outside the breather pipe to form a cylindrical entirety. The front end of the outer surface of the breather pipe wrapped by the hemostatic sponge is thin and the rear end thereof is thick so as to lead the front end of the whole nosal hemostat to be thin and the rear end thereof to be thick; the breather pipe is made of medical macromolecular material, can be pressed to be dented; when in use, the breather pipe and the hemostatic sponge are plugged into the nosal cavity after being dented; after the breather pipe and the hemostatic sponge naturally restore, natural force when the hemostatic sponge and the macromolecular breather pipe restore is utilized to press and staunch hemorrhagic spots in the nosal cavity; and with the hemostatic function of the hemostatic sponge, the hemostatic effect is better. As being thin at the front end and thick at the rear end, the whole nosal hemostat is suitable for physiological structure of the nosal cavity and is convenient to be put into the nosal cavity; and as the macromolecular breather pipe is arranged, the smoothness of breathing of the nosal cavity can be kept when in hemostasia, normal breathing is not interfered and uncomfortableness of patients is reduced.

An integrated catheter assembly for enabling diverse endoscopic in situ therapies. The assembly includes a catheter with an irrigation fluid lumen, a distal electrode tip portion that acts as a hemostat, and a cutting wire for making incisions in or ablating tissue. A cutting wire hub provides a sealing entrance for a cutting wire. An operator enables the physician to displace the cutting wire between extended and retracted positions. The cutting wire and electrode are electrically isolated. In addition, the catheter assembly may include a planar tip which, when extended outside the distal end of the assembly, assumes a substantially flat unbiased configuration for use. The apparatus of the present invention allows the physician to make incisions in or ablate tissue using electrosurgery, irrigate tissue, and cauterize or coagulate tissue without having to remove the apparatus from the working channel of the endoscope.

An instrument for delivery, deployment, and tamponade of a hemostat. A delivery cannula is included and has a proximal end, a distal end, and a lumen therebetween. A shaft is configured to be introduced into and move relative to the lumen. A hemostat applicator at the distal end of the shaft includes a tamponade surface. The applicator is configured to transition between a first, compact state for introduction into and movement within the lumen, and a second, expanded state as the applicator exits from the delivery cannula.

A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can be used with existing RF / bi-polar cautery generators.