83 results about "Closing wound" patented technology

A system and method for the temporary closure of a wound, especially an abdominal wound, to facilitate re-entry, final closure, and long term healing of the wound. An abdominal wound dressing and methods of use are described that enable the application of negative pressure to the wound site in a site healing promoting manner while also limiting the formation of adhesions that would prevent the removal of the dressing. The dressing comprises a layer of porous foam material (36) enclosed by sheets of elastomeric material (38) punctuated by a number of appropriately placed holes (34). Multiple layers of porous foam may also be used. A suction tube connector (16) is provided on an upper surface of a layer of foam (12) for connection to a negative pressure source. At least one layer of foam is enclosed in elastomeric material and is placed in direct contact with the tissue within the open wound. Fluids are drawn by negative pressure through the holes positioned in the elastomeric envelope, and through the foam. If multiple foam layers are employed, the lower layer(s) of foam are of a finer porosity while the upper layer of foam is coarse. An adhesive elastomeric sheet (14) covers the entire wound dressing and seals the edges to the skin surrounding the wound. An appropriate vacuum device is attached to the suction tube connector.

A surgical clip applier for use in closing wounds under the microscope in small blood vessels modifies a well-known clip applier system to make more steady and reliable the application of very small clips during surgery on a scale of vessel size of 2 mm in external diameter and smaller. The known device is modified internally so as to be capable of receiving a flexible remote actuation device which can be a cable release such as used for a camera shutter, or which can be a flexible hydraulic or pneumatic line as a force-transmitting device. Thus, the surgeon can hold the clip applier very steadily at the site desired without contracting any intrinsic muscles while the cable release is depressed by another person, or with the surgeon's other hand, or with a foot pedal.

The present invention relates to a method of making clips which can be used to engage body tissue for the purpose of closing wounds. Such clips are generally annular in shape and have radially inwardly extending tines. It is often desirable for such clips to have a small lateral dimension, but manufacturing difficulty has been encountered in making small clips because of the difficulty in cutting materials accurately when attempting to produce a clip with closely packed elements. The present invention avoids these difficulties by first forming a precursor which, in one embodiment, has the tines extending radially outwardly from the annular body and then forms the clip by inverting the precursor such that the tines extend radially inwardly. In an alternate embodiment, the precursor is formed with an over-sized lateral dimension and then compressed inwardly to bring the tines closer together and to reduce the lateral dimension of the precursor. It is preferred to manufacture such clips from a superelastic alloy such as nickel-titanium, in which case the inverted or compressed precursor must be heated and quenched to heat set the clip in its final shape.

Sutures are used in combination with fibrosing agents to induce or stimulate fibrosis that between the sutures and the host tissues into which the sutures are inserted. Compositions and methods are described for use in lifting tissue, closing wound, and other applications.

A wound closure device for positioning within a wound gap defined between at least two tissue segments has an effect of drawing the at least two tissue segments to a state of proximity that closes the wound gap. The wound closure device includes a tubular collapsible member having an expanded configuration and a collapsed configuration. The wound closure device further includes tissue engaging structure for attaching the tissue segments to the tubular collapsible member.

The present invention relates to a method of making clips which can be used to engage body tissue for the purpose of closing wounds. Such clips are generally annular in shape and have radially inwardly extending tines. The present invention first forms a precursor which, in one embodiment, has the tines extending radially outwardly from the annular body and then forms the clip by inverting the precursor such that the tines extend radially inwardly. In an alternate embodiment, the precursor is formed with an over-sized lateral dimension and then compressed inwardly to bring the tines closer A together and to reduce the lateral dimension of the precursor. It is preferred to manufacture such clips from a superelastic alloy such as nickel-titanium, in which case the inverted or compressed precursor must be heated and quenched to heat set the clip in its final shape.

A device for closing wounds such as openings in blood vessels as well as a method of doing so are disclosed. The device employs a fabric wrapped around an expandable frame both of which are inserted into a blood vessel through an introducer sheath. Once inserted, the expandable frame expands thereby expanding the fabric therewith. The fabric is made from a bioabsorbable material and includes a plurality of microhooks extending therefrom. One suitable material is polylactic acid fiber. Upon retraction of the device, the microhooks engage the adventitia surrounding the blood vessel causing the fabric to remain in position sealing the opening even after the expandable member is retracted and removed as well as the introducer sheath As the fabric is made from a bioabsorbable material, the device can remain in place even after hemostasis is reached and eventually dissolve within the body.

Wound closure methods and apparatus are provided which utilize blood fluid by activating the clotting cascade of the blood fluid outside the body within a substantially enclosed sterile container then introducing the blood fluid to the wound site to complete clotting. Methods and apparatus for providing ways of inhibiting anticoagulants and slowing fibrin clot degradation are also disclosed. Kits for practicing the invention singularly or in combination with and / or associated with preferred procedures are also disclosed.

A guidewire assembly including a repeatably inflatable occlusive balloon on a guidewire ensheathed in a close wound spiral coil. The guidewire assembly is used as part of a guidewire occlusion system.

The present invention relates to a negative pressure wound closure system and methods for using such a system. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to provide for movement of the tissue.

The invention relates to a device used for testing magneto-rheological fluid shear yield stress. The testing device mainly comprises an adjustable uniform magnetic field generating device, a steel barrel, a rotary shaft, a seal ring cover plate, a support, a motor, a torque sensor, a Hall piece, a data demodulation single-chip microcomputer and a testing display instrument. The testing device has the advantages that the magnetic field generating device can generate a large adjustable uniform magnetic field; wall face sliding can be prevented from occurring to magneto-rheological fluid under the condition that the magnetic field exists; a testing and displaying device enables weak voltage difference signals to be output onto the testing display instrument accurately in real time through a torque sensor, the PWM theory, a signal amplifying circuit and A / D conversion; a low-reluctance closed loop is formed on the outer side of a close-wound coil through industrial pure iron, and a coil fixing frame on the inner side of the close-wound coil is made of nylon materials so that more magnetic lines can pass through the magneto-rheological fluid. The magneto-rheological fluid is arranged in the center of the magnetic field generating device, so that the magnetic induction strength generated by the detected magneto-rheological fluid is distributed evenly and perpendicularly.

A self-closing medical staple including a resilient body having an axis and a longitudinal opening, and at least two opposed longitudinal tines spaced about the axis. Each tine is partially enclosed by the body and has a distal end exposed distally of the body. The staple has a closed configuration wherein at least the distal ends of the tines are disposed adjacent to or contacting each other and an open configuration wherein at least the distal ends of the tines are radially separated from each other. A wound closure system includes a mandrel with a flared portion for sliding movement within the longitudinal opening to transform the staple between the open and closed configurations. The system includes a pusher for advancing the staple into tissue surrounding a wound. A method of closing a wound with the self-closing staple is also disclosed.

A device for closing wounds such as openings in blood vessels as well as a method of doing so are disclosed. The device employs a fabric wrapped around an expandable frame both of which are inserted into a blood vessel through an introducer sheath. Once inserted, the expandable frame expands thereby expanding the fabric therewith. The fabric is made from a bioabsorbable material and includes a plurality of microhooks extending therefrom. One suitable material is polylactic acid fiber. Upon retraction of the device, the microhooks engage the adventitia surrounding the blood vessel causing the fabric to remain in position sealing the opening even after the expandable member is retracted and removed as well as the introducer sheath As the fabric is made from a bioabsorbable material, the device can remain in place even after hemostasis is reached and eventually dissolve within the body.

A staple and stapler and introducer are disclosed for closing a wound and for wound site management. The staple is deformable, and includes a plurality of tissue-piercing prongs which are expanded outwardly, inserted into tissue and collapsed inwardly to close the wound. The stapler includes a plurality of mechanisms to deform the staple into various positions. An introducer is provided that includes a plurality of spaced-apart wire guides for securing and centering the wound opening during a medical procedure, and during closure of the wound.

A wound closure system having first, second and third adhesive pads with a pair of strap members fixedly secured to the first and third adhesive pads. The pair of strap members are slidably received within the second adhesive pad. When the third adhesive pad is displaced, the first and second adhesive pads are displaced toward each other to close the wound.

A method of closing a wound with a dressing. The method including: restraining at least a portion of the dressing corresponding to the wound into a first shape; adhering first and second portions of the dressing across the wound; removing the restraint from the dressing while the first and second portions are adhered to the skin by removing a member from the dressing to allow at least the portion to move towards a second shape and apply a force tending to close the wound.

A maglev motor and a pump using the maglev motor can be provided with strong magnetic bearing force generated by a simple structure, rotation losses of a rotor reduced with the generation of an eddy current suppressed, and a configuration of magnetic bearing can downsize by using a thin rotor. The donut-shaped rotor is arranged between the magnetic bearing unit and the motor unit, the motor yoke of the motor radially has a plurality of projected poles, a coil is close-wound around the projected pole, predetermined clearance is made between the inner side of the rotor and the projected pole, a plurality of two projected poles opposite each other near either end portions of the outer side of the rotor are provided circularly at equal intervals on the magnetic bearing yoke of the magnetic bearing unit, a magnetic bearing coil is close-wound around one of the two projected poles, a first permanent magnet is provided for the other projected pole, predetermined clearance is made on one side of the rotor end portion and the bridge unit for connecting the magnetic bearing unit to the motor unit is provided, a second permanent magnet is provided between the projected pole provided for the magnetic bearing yoke and the bridge yoke of the bridge unit, a third permanent magnet is provided between the motor yoke and the bridge yoke, a plurality of motor permanent magnets opposite the motor yoke are provided inside the rotor, and all projected poles provided on the bridge unit side of the magnetic bearing unit can be close-wound by the magnetic bearing coil, or provided with the first permanent magnet.

Skin sealants are usually applied over skin preps to seal the skin and hold any remaining bacteria in place prior to surgical incisions. This sealant is generally left on the skin after surgery. A skin coating is provided that has an indicator that gives a visible color change upon contact with microbes or microbial by-products and so provides an early warning of infection. The coating is a curable coating composition that may also be used without skin preps and may be used to protect other disruptions in the skin like wounds, bruises, abrasions, burns, acne, blisters, bites, stings, punctures and cuts. It may also be used to close wounds or provide an additional barrier to other parts of the skin, such as the nails and mucosa.

Defibrillator lead designs and methods for manufacturing a lead including attachment strength between a fibrosis-limiting material covering, a shocking coil electrode, and an implantable lead body are disclosed herein. The shocking coil electrode includes a close wound tri-filar or greater coil.

A wound closure device includes first and second opposing members which open and close in a clam-shell configuration, skin penetrating needles and a pressure bar for applying pressure to close the wound when the device is closed, and releasable locking means for biasing or maintaining the device in a closed position.

A hydraulic tensioner comprises a hollow plunger slidable in a plunger-accommodating hole in a housing, the plunger and housing forming a high pressure oil chamber. A check valve unit, which includes a check ball and a check ball retainer, allows oil to flow into the oil chamber, but prevents reverse flow. A plunger-biasing spring, disposed inside the high-pressure chamber includes a close-wound portion fitting over the retainer of the check valve unit, and a portion having spaced windings, which extends and compresses axially with protruding and retracting movement of the plunger. The outer diameter of the close-wound portion is greater than the outer diameter of the portion having spaced windings.

Methods and systems for closing wounds using wound closures and a flowable adhesive skin paint are disclosed. The flowable adhesive does not adhere the wound closures to the skin over the wound to reduce irritation. In some embodiments, the skin paint may include 1-40% of a siloxane-containing polymer; 60-99% of an Alkane-Based Siloxane Polymer Reaction Solvent; and 0-15% of adjuvants. The wound closures used with such a skin paint may include a wound bridging portion of microporous polypropylene film.

The invention relates to a manufacturing process of coil tubes in equipment, which comprises the following steps of: (1) performing the test and calculation of springback amount on enwinding materials according to the shape and curvature of the shell wall of a set of large equipment and manufacturing an enwinding die; (2) arranging parison tubes of multiple groups of wall sticking coil tubes sequentially, machining welding beveled edges at splicing positions, positioning and compressing the parison tubes by using a clamp, welding the parison tubes, polishing the surplus height of welded joints, and detecting the flaws in the welded joints to check if the welded joints are qualified; (3) determining an initial position on the die, and enwinding the parison tubes of multiple groups of wall sticking coil tubes on the die continuously; (4) performing stress relieving and setting on the wall sticking coil tubes formed by enwinding; and (5) putting the wall sticking coil tubes formed by enwinding into the large equipment, determining an initial position on a shell wall of the large equipment according to a positioning block, and bonding the wall sticking coil tubes formed by enwinding on the shell wall of the large equipment closely under the action of a close-sticking device. The manufacturing process has the advantages of convenient operation, high machining efficiency, easy guarantee of product quality and little loss of raw materials during the welding of the parison tubes of the wall sticking coil tubes.

A gliding stitch technique provides efficient and effective means to close a wound under tension. The gliding stitch is especially useful in treating wounds found within thick skin such as a scalp or back wound. The disclosed suture method may be used upon humans and other mammals.