502 results about "Wound closure" patented technology

A fastener for insertion into pierced openings of a tissue wound has a body formed of a generally bioabsorbable polymer defining an initial capture area internal to the body. The body includes a pair of arms, each with an inwardly projecting cleat operably joined at an elbow portion defining an internal elbow angle. The arms are operably joined to a backspan at a shoulder portion defining an internal shoulder angle. A durable tissue retention zone is defined between the cleat and the arm. The elbow portion and the internal elbow angle define an insertion width greater than a width of the pierced openings resulting in the pierced openings stretching over the cleat and being elastically retained within the durable tissue retention zone. The fastener initially captures wound tissue in the initial capture area and then dynamically reforms in response to lateral stresses applied by the wound tissue without a fracture failure of the fastener until a minimum degradation period.

Disclosed is a wound closure device and method for using the same. The wound closure device includes a handle, a body portion extending distally from the handle, a stapling mechanism extending distally from the body portion and a mechanism for supplying electrical energy from an RF power supply to a fastener (e.g. staple) which is associated with the stapling mechanism. In a representative embodiment, the stapling mechanism includes an inner rod member disposed within an elongated outer sleeve and slidably movable therein. The rod member has an enlarged tip for deploying the fastener that is supported adjacent to the tip into body tissue. The wound closure device further includes an actuator mechanism associated with the handle and body portion and configured to facilitate relative movement of the inner rod and the outer sleeve so as to deploy the fastener into body tissue. In alternative embodiments, a second pole of the RF power supply is connected to a conductive ring associated with a vascular introducer.

The invention relates to sutures and surgical staples useful in anastomoses. Various aspects of the invention include wound closure devices that use amphiphilic copolymer or parylene coatings to control the release rate of an agent, such as a drug or a biological material, polymerizing a solution containing monomers and the agent to form a coating, using multiple cycles of swelling a polymer with a solvent-agent solution to increase loading, microparticles carrying the agent, biodegradable surgical articles with amphiphilic copolymer coatings, and sutures or surgical staples the deliver a drug selected from the group consisting of triazolopyrimidine, paclitaxol, sirolimus, derivatives thereof, and analogs thereof to a wound site.

Articles are provided having no orientation or a multi-directional orientation. Such articles may be in the form of films, ribbons, sheets, and / or tapes and may be utilized as buttresses with a surgical stapling apparatus or as reinforcing means for suture lines. The articles may be produced with a polymeric material having an agent, such as a chemotherapeutic agent or a radiotherapeutic agent, incorporated therein or applied as a coating thereon.

This disclosure relates to surgical stapling apparatus for enhancing one or more properties of body tissue that is or is to be repaired or joined. The apparatus includes a staple anvil, a staple cartridge, a driving member for driving the surgical staples from individual staple slots in the staple cartridge and against the staple anvil, and a wound closure material applicator assembly. The applicator assembly includes at least one conduit extending along at least a length of the driving member, anvil and / or cartridge and at least one reservoir in fluid communication with the at least one conduit, the reservoir containing a wound closure material therein. The staples can be coated with a wound closure material.

A surgical stapling apparatus includes a staple anvil and a staple cartridge having a working surface, one or more rows of individual staple slots formed in the working surface, a knife track formed along a length of the working surface, and a plurality of surgical staples individually disposed within the individual staple slots. The apparatus further includes an actuation sled having a knife and being configured and adapted to movably position the knife axially within the knife track. The apparatus also includes a wound closure material applicator assembly having a needle secured to the knife to dispense a quantity of wound closure material along a length of the knife track as the actuation sled and knife are moved therealong.

Devices for attaching a first mass and a second mass and methods of making and using the same are disclosed. The devices can be made from an resilient, elastic or deformable materials. The devices can be used to attach a heart valve ring to a biological annulus. The devices can also be used for wound closure or a variety of other procedures such as anchoring a prosthesis to surrounding tissue or another prosthesis, tissue repair, such as in the closure of congenital defects such as septal heart defects, tissue or vessel anastomosis, fixation of tissue with or without a reinforcing mesh for hernia repair, orthopedic anchoring such as in bone fusing or tendon or muscle repair, ophthalmic indications, laparoscopic or endoscopic tissue repair or placement of prostheses, or use by robotic devices for procedures such as those above performed remotely.

Articles are provided having no orientation or a multi-directional orientation. Such articles may be in the form of films, ribbons, sheets, and / or tapes and may be utilized as buttresses with a surgical stapling apparatus or as reinforcing means for suture lines. The articles may be produced with etchings on at least a part of a surface of the article.

A tissue bonding article includes a flexible material, an adhesive substance applied over at least a portion of a bottom side of the flexible material, and a polymerizable adhesive composition permeated throughout at least a portion of the flexible material.

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.

Articles are provided having no orientation or a multi-directional orientation. Such articles may be in the form of films, ribbons, sheets, and / or tapes and may be utilized as buttresses with a surgical stapling apparatus or as reinforcing means for suture lines. The articles may be produced with a polymeric material having an agent, such as a chemotherapeutic agent or a radiotherapeutic agent, incorporated therein or applied as a coating thereon.

A method and apparatus for the transcutaneous monitoring of blood gases generally comprises a blood gas data acquisition device, a vacuum source and a blood gas transducer unit. The blood gas transducer unit is adapted for application to a patient's skin and administration of a local vacuum at the area of patient application. It further comprises an electrochemical blood gas transducer, well known to those of ordinary skill in the art, which is disposed entirely within the local vacuum at the area of patient application. The vacuum source is placed in fluid communication with the blood gas transducer unit, through a hydrophobic membrane filter for safety purposes, in order to induce a condition of hyperperfusion in the locality of the electrochemical blood gas transducer. Under the control of a microcontroller, or equivalent means, the blood gas acquisition device is then utilized to capture a measure of skin surface oxygen or carbon dioxide pressure. The microcontroller can then utilize this measure to arrive at an estimate of arterial partial pressure of oxygen or carbon dioxide, accordingly. Because vacuum induced perfusion produces the requisite condition of hyperperfusion without local heating and, therefore, without acceleration of the local metabolic function, the present invention results in more accurate than previously available estimates of partial pressure blood gas pressures and does so while eliminating a significant risk for injury to the patient.

A dermal punch device for automatically extracting a sample of tissue of a predetermined size and shape from a body comprising a retractable cutter and a sutureless biopsy closure mechanism that includes a wound closure fastener member adapted to be disposed over a biopsy region after the performance of the biopsy, wherein wound closure fastener member is applied without the need of several instruments to seal the wound. The wound closure fastener member is dispensed by a sutureless biopsy closure dispenser located at the same distal end of the biopsy punch device surrounding the biopsy punch cutter assembly avoiding the need of separates instruments, reducing the wound closing steps and surgical procedure time.

A device and technique for a sutureless wound closure, which limits the risks of rupture and scarring, is described. The device includes a one-piece surgical fastener generally shaped in a curve along the width of the surgical fastener. The fastener includes a tissue insertion tongue with a plurality of tissue attachment points for fixing the fastener to skin tissue. The fastener also includes a clasp for engaging an identical surgical fastener. The surgical fastener can also be a two-piece structure including a male connecting strap and a female connector. Both pieces include a tissue-connecting mechanism for fixing to skin tissue. The female connector includes an engagement clasp for securing the male connecting strap to the female connector.

A modified vacuum assisted wound closure system adapted for concurrent applications of phototherapy having a foam pad for insertion substantially into the wound site and a wound drape for sealing enclosure of the foam pad at the wound site. The foam pad includes an optical pigtail, whereby desired wavelength of light may be directed into and about the wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of fluid drainage. The foam pad is made of a highly reticulated, open-cell polyurethane or polyether foam for good permeability of wound fluids while under suction and is also embedded with an optical pigtail. The optical pigtail comprises an optical fiber that has been formed to fan into a plurality of sections. The fibers of the most distal fanned sections, which are implanted in the foam pad at its base, are provided with tiny optical slots, oriented away from the foam pad and toward the wound site. Each optical slot is made by stripping the cladding from the optical fiber in the desired areas of the fanned sections to form slot radiators. Because it is necessary to trim the foam pad in preparation for therapy, the optical fibers comprise plastics, such as acrylic or styrene. Upon placement of the pad, having the optical pigtail embedded therein, the wound drape is firmly adhered about the VAC therapy suction hose as well as the extending optical fiber to prevent vacuum leakage.

Devices and methods are provided for an implantable medical device which is degradable over a clinically relevant period of time. The medical devices may have the form of implants, graft implants, vascular implants, non vascular implants, wound closure implants, sutures, drug delivery implants, biologic delivery implants, urinary tract implants, inter-uterine implants, organ implants, bone implants including bone plates, bone screws, dental implants, spinal disks, or the like. In preferred embodiments, the implantable medical device comprises an implantable luminal prosthesis, such as vascular and non-vascular stents and stents grafts.

A wound closure apparatus is disclosed which includes a housing that contains a vacuum pump and a chamber for holding a disposable wound fluid collection canister. The canister resides within the chamber and connects at an outlet with the vacuum pump and at an inlet with a pad. The pad is placed over a wound and adhesively secured thereto. When the vacuum pump activates, it evacuates air from the canister resulting in wound fluids flowing from the wound into the canister. After the canister is filled, it is removed from the chamber and replaced with another canister to continue the removal of wound fluids.

A method for joining and holding closed a wound in bodily tissue, fastening junctions of wounds, tying off wounds, joining a foreign element to tissue, and altering the position of tissue using a barbed suture including sharp pointed ends. Each end of the suture includes barbs on that permit movement in an opposing direction to the barbs on the other end of the suture. This two-way barbed suture is used by the method of the present invention in applications including abdominal surgeries such as a Nissen fundoplication, laparoscopic uses such as stabilizing a bowel structure and performing a closure of a cystostomy, liver to bowel anastomosis, closure of an orifice of a Zenker's Diverticulum, endoscopic uses such as closure of ulcerative lesions or and post-procedural tissue defects, bladder wound closure, valve replacement surgery, device attachment, cosmetic surgery, and blood vessel wound closure.

A method for joining and holding closed a wound in bodily tissue, fastening junctions of wounds, tying off wounds, joining a foreign element to tissue, and altering the position of tissue using a barbed suture including sharp pointed ends. Each end of the suture includes barbs on that permit movement in an opposing direction to the barbs on the other end of the suture. This two-way barbed suture is used by the method of the present invention in applications including abdominal surgeries such as a Nissen fundoplication, laparoscopic uses such as stabilizing a bowel structure and performing a closure of a cystostomy, liver to bowel anastomosis, closure of an orifice of a Zenker's Diverticulum, endoscopic uses such as closure of ulcerative lesions or and post-procedural tissue defects, bladder wound closure, valve replacement surgery, device attachment, cosmetic surgery, and blood vessel wound closure.

A tissue approximation device and processes for using the device are provided. The device is an implantable, biodegradable construct (except for hernia repairs) that has attachment points emanating from a supportive backing. The device improves the mechanical phase of wound healing and evenly distributes tension over the contact area between the device and tissue. Processes for using the device include wound closure, vascular anastomoses, soft tissue attachment and soft tissue to bone attachment.

A method and apparatus for closing a vascular wound includes an apparatus that can be threaded over a guidewire into place at or adjacent the wound. The apparatus includes a chamber that encloses a hemostatic material therein. When the apparatus is positioned adjacent the wound as desired, the hemostatic material is deployed from the chamber. A blocking member distal of the hemostatic material functions as a barrier to prevent the hemostatic material from entering the wound. Blood contacts the hemostatic material, and blood clotting preferably is facilitated by a hemostatic agent within the material. Thus, the vascular puncture wound is sealed by blood clot formation.

The invention relates to sutures and surgical staples useful in anastomoses. Various aspects of the invention include wound closure devices that use amphiphilic copolymer or parylene coatings to control the release rate of an agent, such as a drug or a biological material, polymerizing a solution containing monomers and the agent to form a coating, using multiple cycles of swelling a polymer with a solvent-agent solution to increase loading, microparticles carrying the agent, biodegradable surgical articles with amphiphilic copolymer coatings, and sutures or surgical staples the deliver a drug selected from the group consisting of triazolopyrimidine, paclitaxol, sirolimus, derivatives thereof, and analogs thereof to a wound site.

A wound closure apparatus having a porous pad adapted to be fluidly connected to a vacuum pump. The pad is placed over or within a tissue site, and the vacuum pump may be activated to draw air and exudates from the tissue site. The pad contains multiple pore sizes to prevent granulation tissue from migrating into the pad as reduced pressure treatment is applied. The pad has an outer surface adjacent the wound with pore sizes of a diameter of approximately 100 microns or less to prevent tissue from growing into the pad and is treated for biocompatibility.

A method of treating tissue damage comprises applying a negative pressure to a wound sufficient in time and magnitude to promote tissue migration and thus facilitate closure of the wound. The method is applicable to wounds, burns, infected wounds, and live tissue attachments. A wound treatment apparatus is provided in which a fluid impermeable wound cover is sealed over a wound site. A screen in the form of an open-cell foam screen or a rigid porous screen is placed beneath the wound cover over the wound. A vacuum pump supplies suction within the wound cover over the treatment site.

A wound-closing dressing, which is suitable for use as part of a reduced-pressure, wound-treatment system, may include a sealing drape, one or more contracting elements, and a gripping member. The contracting element may be coupled to the sealing drape and is configured to contract when activated and to generate a closing force. A gripping member is coupled to the sealing drape and is configured to transmit the closing force to a patient's epidermis. Other dressings, systems, and methods are also disclosed.