50 results about "Vascular anastomosis (procedure)" patented technology

The present invention relates to new and useful apparatus for use with an intraluminally directed anvil apparatus for intraluminally directed vascular anastomosis of an end of a graft vessel to the wall of a receiving blood vessel that is performed according to a minimally invasive procedure. The intraluminally directed vascular anastomosis does not require the interruption of blood flow in the receiving blood vessel and it is versatile enough to suitably combine a variety of cutting, welding, soldering, sealing, and joining techniques such as stapling. The intraluminally directed anvil apparatus comprises an anvil and a wire used for signaling the optimal anastomosis site; this signaling can be performed when the initial exploration is performed. The intraluminally directed anvil apparatus is typically used with a catheter.

Tissue adhesives formed by reacting an oxidized polysaccharide with a water-dispersible multi-arm polyether amine, wherein at least three of the arms are terminated by primary amine groups, are disclosed. The use of the tissue adhesives for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; drug delivery; anti-adhesive applications; and as a bulking agent to treat urinary incontinence are described.

Tissue adhesives formed by reacting poly(hydroxylic) compounds derivatized with acetoacetate groups and / or polyamino compounds derivatized with acetoacetamide groups with an amino-functional crosslinking compound are disclosed. The use of the tissue adhesives for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; drug delivery; and anti-adhesive applications are described.

The present invention relates to new and useful apparatus, systems and methods for providing an effective tool for intraluminally directed vascular anastomosis of a graft vessel to a receiving blood vessel that is performed according to a minimally invasive procedure. The intraluminally directed vascular anastomosis does not require the interruption of blood flow in the receiving blood vessel and it is versatile enough to suitably combine a variety of cutting, welding, soldering, sealing, and joining techniques. The intraluminally directed anvil apparatus comprises an anvil and a wire used for signaling the optimal anastomosis site; this signaling can be performed when the initial exploration is performed. An anastomosis device is used in conjunction with the intraluminally directed anvil apparatus for opening the anastomosis fenestra and joining the anastomosed structures.

A method for implementing vascular anastomosis in the attachment of a graft vessel to a target vessel such as a coronary artery, and subsequently creating a passageway between the vessels in order to establish fluid flow communication therebetween. Further is to the provision of novel devices which are utilized in implementing the steps of attaching a graft vessel to a target vessel such as a coronary artery through vascular anastomosis, and thereafter creating a fluid flow passageway therebetween.

Methods and apparatus can be used for anastomosis, and more specifically, for joining two vascular vessels, e.g., arterial or venous vessels or the like, using a stent.

Adhesives formed by reacting an oxidized polysaccharide with a poly(hydroxylic) compound derivatized with acetoacetate groups in the presence of a base catalyst are disclosed. The use of the adhesives for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; and drug delivery are described. The adhesive may also be used for industrial and consumer applications.

A system for performing an end-to-side vascular anastomosis including an anastomosis device, an application instrument and methods for performing a vascular anastomosis. The system is applicable for performing an anastomosis between a vascular graft and the ascending aorta in coronary artery bypass surgery, particularly in port-access CABG surgery. A first aspect of the invention includes a vascular anastomosis staple. A first configuration has two parts: an anchor member, forming the attachment with the target vessel wall and a coupling member, forming the attachment with the bypass graft vessel. The anastomosis is completed by inserting the coupling member, with the graft vessel attached, into the anchor member. A second configuration combines the functions of the anchor member and the coupling member into a one-piece anastomosis staple. A second aspect of the invention includes an anastomotic fitting, having an inner flange over which the graft vessel is everted and an outer flange which contacts the exterior surface of the target vessel. A tailored amount of compression applied by the inner and outer flanges grips the target vessel wall and creates a leak-proof seal between the graft vessel and the target vessel. A third aspect of the invention has a flange to which the graft vessel attaches, by everting the graft vessel over the flange, and a plurality of staple-like members which attach the flange and the everted end of the graft vessel to the wall of the target vessel to form the anastomosis

Novel aldehyde-functionalized polysaccharide compositions are described that are more stable in aqueous solution than oxidized polysaccharides or other types of polysaccharides containing pendant aldehyde groups. The aldehyde-functionalized polysaccharides may be reacted with various amine-containing polymers to form hydrogel tissue adhesives and sealants that may be useful for medical applications such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, preventing leakage of fluids such as blood, bile, gastrointestinal fluid and cerebrospinal fluid, ophthalmic procedures, drug delivery, and preventing post-surgical adhesions.

Methods for sealing an orifice in tissue in the body of a living animal using an adhesive formed by reacting an oxidized polysaccharide with a poly(hydroxylic) compound derivatized with acetoacetate groups in the presence of a base catalyst are disclosed. Methods for using the adhesive for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; and drug delivery are described.

A vascular graft for anastomosis includes a tubular member; and a cuff disposed proximate one end of the tubular member. Another vascular graft for anastomosis includes a tubular member; a side arm disposed on a side of the tubular member, wherein a lumen of the side arm is configured to be in fluid communication with a lumen of the tubular member; and a cuff disposed on the side arm proximate an end distal from the tubular member. A method for vascular anastomosis includes providing a graft device comprising, a tubular member, and a cuff disposed proximate one end of the tubular graft member; and joining the graft device to a target in an end-to-end anastomosis using the cuff of the graft device.

A tissue adhesive formed by reacting an oxidized cationic polysaccharide containing aldehyde groups and amine groups with a multi-arm amine is described. The oxidized cationic polysaccharide-based polymer tissue adhesive may be useful for medical applications including wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, ophthalmic procedures, drug delivery, anti-adhesive applications and as a bulking agent to treat urinary incontinence. Additionally, due to the presence of the positively charged amine groups on the oxidized polysaccharide, the polymer tissue adhesive disclosed herein may promote wound healing and blood coagulation, and may possess antimicrobial properties.

A hydrogel tissue adhesive formed by reacting an aminated polysaccharide with a water-dispersible, aldehyde-functionalized multi-arm polyether is described. The hydrogel tissue adhesive may be useful as a general tissue adhesive and sealant for medical and veterinary applications such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, ophthalmic procedures, drug delivery, and to prevent post-surgical adhesions. Additionally, due to the presence of the aminated polysaccharide, the hydrogel tissue adhesive may also promote wound healing and blood coagulation, and provide antimicrobial properties.

Tissue adhesives formed by crosslinking albumin and / or gelatin with certain polyamines and / or polycarboxylates using a water-soluble carbodiimide are disclosed. The use of the tissue adhesives for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; drug delivery; anti-adhesive applications; and as a bulking agent to treat urinary incontinence are described.

The present invention, which addresses the needs described above, resides in an apparatus and method for coupling vascular apertures to a blood supply vessel in a manner that minimizes the time and operator dependent inconsistency in performing vascular anastomoses. In the coronary setting, this concept is fast and can be applied to both conventional and minimally invasive operative techniques. In the preferred embodiment, the present invention relates to an apparatus and method for facilitating end-to-side vascular anastomoses procedure, whereby the present invention acts as a coupling apparatus between a first, blood supplying hollow organ, e.g. the LIMA, radial artery, or a saphenous vein and the side wall of second hollow organ, typically one of the major coronary arteries, such as the left coronary artery (LCA), right coronary artery (RCA) or the circumflex (CX).

The invention discloses a hydrogel containing a heparin-poloxamer compound for anastomosis of blood vessel and a preparation method thereof. The concentration of the heparin-poloxamer compound in the hydrogel is 10-40% (W / V). The hydrogel is pre-sealed in a sterile injector or ampoule, or the hydrogel is freeze-dried into freeze-dried powder and poured into a penicillin bottle, and before use, the freeze-dried powder is dissolved in injection water to form hydrogel. The hydrogel containing the heparin-poloxamer compound disclosed by the invention is applied to the micro-anastomosis of blood vessel in combination with a medical adhesive, the assistance of soluble endovascular stent or suture is not needed, the closeness of the anastomotic stoma is enhanced, the phenomenon of leakage is avoided, and the risk of trauma and thrombosis during the anastomosis of blood vessel is reduced.

A method of dissolving an oxidized polysaccharide in an aqueous solution using an oligomer additive is described. The resulting aqueous solution of the oxidized polysaccharide may be used in combination with an aqueous solution comprising an amine-containing component to prepare hydrogel tissue adhesives and sealants for medical and veterinary applications, such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, ophthalmic procedures, drug delivery, and to prevent post-surgical adhesions.

Techniques for sutureless vascular anastomosis are described, including a sutureless vascular anastomosis connector configured to couple a graft vessel to a main vessel, including a connector body configured to engage a main vessel when inserted into an opening in a wall of the main vessel, and a wing coupled to the connector body and formed using a memory material, the wing being configured to rotate about a transverse axis of the connector when a restraining force is removed from an exterior surface of the wing.

The invention discloses a poloxamer and hydroxyethyl starch-containing hydrogel applicable to angiostomy and a preparation method of the hydrogel. The concentration of the poloxamer in the hydrogel is 10% (W / V)-30% (W / V), and the concentration of the hydroxyethyl starch is 0.1% (W / V)-2% (W / V). The hydrogel is previously enveloped into a sterilized syringe or an ampoule, or the hydrogel is dried in a freezing way to form into freeze-dried powder to be poured into a penicillin bottle, and water for injection is added for dissolving before the hydrogel is used, so that the hydroxyethyl can be formed. The poloxamer and hydroxyethyl starch-containing hydrogel provided by the invention is applicable to the angiostomy, and the support or stitches assistant in a soluble blood vessel does not need, so that the seal performance of an anastomotic stoma can be increased, the hydrogel is free from leakage phenomenon, and the risk of the wound and the thrombosis in the process of angiostomy can be reduced.

A method for performing end-to-end vessel anastomosis includes providing a vessel support including a vessel receiving portion and a handle portion extending therefrom. The vessel receiving portion is an annulus. The vessel receiving portion is positioned around the end of a first vessel and the end of the first vessel is everted about the outer diameter of the vessel receiving portion such that the inner surface of the vessel is directed outwardly. The end of the second vessel is positioned over the everted end of the first vessel such that the inner surface of the second vessel is disposed against the inner surface of the first vessel. The ends of the vessel are secured either with a suture or a surgical adhesive. The handle portion of the vessel support may be removed.

A method for performing end-to-end vessel anastomosis includes providing a vessel support including a vessel receiving portion and a handle portion extending therefrom. The vessel receiving portion is an annulus. The vessel receiving portion is positioned around the end of a first vessel and the end of the first vessel is everted about the outer diameter of the vessel receiving portion such that the inner surface of the vessel is directed outwardly. The end of the second vessel is positioned over the everted end of the first vessel such that the inner surface of the second vessel is disposed against the inner surface of the first vessel. A surgical adhesive is provided and is used to adhere the ends of the vessels together without requiring the application of heat or radiant energy. The handle portion of the vessel support may be removed.

Novel aldehyde-functionalized polysaccharide compositions containing pendant dialdehyde groups are described that are more stable in aqueous solution than oxidized polysaccharides. The aldehyde-functionalized polysaccharides may be reacted with various amine-containing polymers to form hydrogel tissue adhesives and sealants that may be useful for medical applications such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, preventing leakage of fluids such as blood, bile, gastrointestinal fluid and cerebrospinal fluid, ophthalmic procedures, drug delivery, and preventing post-surgical adhesions.

A tissue adhesives and sealant formed by reacting a polyglycerol aldehyde with a water-dispersible, multi-arm amine is described. The tissue adhesive and sealant may be useful for medical and veterinary applications, including, but not limited to, wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, preventing leakage of fluids such as blood, bile, gastrointestinal fluid and cerebrospinal fluid, ophthalmic procedures, drug delivery, and to prevent post-surgical adhesions.