38 results about "Surgical patch" patented technology

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

A device for performing surgery on a patient includes: a mesh patch comprising a top surface and a bottom surface; and a removable cover positioned adjacent to and in facing engagement with the bottom surface of the mesh patch. The bottom surface has a plurality of hooks positioned thereon. The cover is removed from the mesh patch as the mesh patch is positioned at a surgical site such that the hooks on the bottom of the mesh patch grip surrounding tissue of a patient and secure the mesh patch to surrounding tissue of the surgical site. A method for performing a surgery using such a device is also provided.

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

The present invention relates to devices and methods for the repair of hernia. One method for repairing a hernia the steps of making an incision through a skin layer of a patient near the hernia, creating an entrance into the preperitoneal space above the peritoneum at a location above the hernia, identifying and freeing a hernia sac, creating a pocket in the preperitoneal space, directing a surgical patch down through the incision and into the preperitoneal space, and expanding the surgical patch in the preperitoneal space. The method further includes the steps of inserting a distal end of a surgical fastening device through the incision and into the surgical patch, actuating the surgical fastening device to drive a fastener through the surgical patch and into the tissue of the patient, moving the distal end of the surgical fastening device to another location, actuating the surgical fastening device to drive a second fastener through the surgical patch and into the tissue of the patient, and closing the incision with stitches. One surgical apparatus for repairing a hernia includes a surgical stapling instrument for applying at least one surgical staple to fasten a surgical hernia patch to internal body tissue. The surgical instrument includes a handle assembly have a longitudinal axis. A staple cartridge housing is mounted to the handle assembly and is adapted to receive the at least one staple. The staple cartridge housing is dimensioned for insertion through an incision and has a staple actuator mechanism for applying the at least one staple into tissue. An actuation mechanism is operatively coupled to the staple actuator mechanism to operate the staple actuation mechanism.

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

A heart defect in the form of an hole is corrected by placing a patch over the hole. The patch is first attached to an uninflated balloon which is placed distally of the hole. The balloon is inflated with fluid and the patch is positioned upon the hole. After endothelialization the balloon is deflated and removed through a small hole in the patch. The small hole in the patch is closed by a purse string. During endothelialization the balloon is held in place by a disk or second balloon on the proximate side of the defect.

The invention discloses a biodegradable medical Zn-Li-X series alloy material and a preparation method and application. The alloy material comprises 0.1-10 wt.% of Li, 0.01-4 wt.% of X and the balance Zn. X refers to at least one element of Cu, Ag, Mn, Mg, Si, Ca and Sr. Thermoplastic deformation processing is further required before smelted alloy is used, the alloy structure is refined, and thus alloy performance is improved. The zinc alloy has the advantages of excellent comprehensive mechanical property, good biocompatibility, regulatory degradation rate and the like and thus can be used as a material for preparing biodegradable medical implantation instruments to be applied to preparation of intravascular stents, bone implants, maxillofacial surgery and craniocerebral surgery implantation instruments, surgical sutures, various sorts of surgical patches, anastomats, vascular clamps or neural restoration catheters and the like.

The present invention discloses biological surgical patch and its preparation process. The biological surgical patch includes one base material of animal membrane material, which is cross-linking fixed with non-aldehyde fixing agent and treated to eliminate antigen. The biological surgical patch made of natural biological material with collagen as main component may be degraded in the degradation speed synchronizing with the growth of the regenerating tissue, and the degraded products are amino acids or polypeptide capable of being absorbed by organism for the regenerative repair of the defected tissue. The present invention has no immunological rejection reaction, high biocompatibility, capacity of inducing tissue regeneration and good mechanical compliance, and can meet the requirement for repairing tissue.

The invention discloses a biodegradable medical zinc-lithium binary alloy material and a preparation method and application thereof. The biodegradable medical zinc-lithium binary alloy material is composed of, by weight, 0.55%-10% of lithium and the balance zinc. Alloy obtained through smelting further needs to be subjected to thermoplastic deformation processing before being used, so that the alloy structure is refined and the performance of the alloy is improved. The zinc alloy has the advantages of being excellent in comprehensive mechanical property, good in biocompatibility, controllable in degradation rate and the like, can be used as a material for preparing a degradable medical implantable instrument and is applied to prepare endovascular stents, bone implants, maxillofacial surgery and craniocerebral surgery implantable instruments, surgical sutures, various surgical patches, anastomats, vascular clamps or neural restoration catheters and the like.

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

A biological surgical patch made by a method that includes the steps of providing a natural animal tissue that has a substrate, crosslinking and fixing the substrate, minimizing the antigens from the substrate, tanning the substrate, and incorporating an active layer in the substrate.

A hernia repair system includes a surgical patch, a dispenser, and a plurality of sutures. The surgical patch is movable between a contracted orientation and an expanded orientation. The dispenser includes a housing and a plunger. The housing defines a lumen. The plunger is movably secured within the lumen. The housing is configured to releasably retain the surgical patch within the lumen in the contracted orientation of the surgical patch. The plunger is configured to expel the surgical patch from the housing upon the selective actuation of the plunger from a first position to a second position. The surgical patch is autonomously positionable in the expanded orientation upon being expelled from the lumen. The plurality of sutures are configured to securely mount the surgical patch to a tissue site when the surgical patch is positioned in the expanded orientation.

A computer for assisting in determining the strength of fixing a craniofacial surgery patch comprises a storage device for storing a medical image and a central processing unit, the central processing unit carry out a method for assisting in determining the strength of fixing a craniofacial surgery patch. The method includes obtaining a medical image; establishing a skull model according to the medical image; receiving a patch setting command, and disposing a patch model on the skull model according to the patch setting command; generating an internal grid mesh data of the skull model disposed with the patch model; executing a biomechanical simulation of a patch structural strength according to the skull model disposed with the patch model, the internal grid mesh data and a boundary condition; and providing a stress distribution, a strain distribution or a displacement distribution of the patch model to assist in determining.

The invention discloses a surgical patch for treating hernia and a preparation method thereof. The method for preparing a skin patch comprises the following steps of: (1) taking isolated pigskin or cow leather; (2) soaking the product in the step (1) by aqueous alkali; (3) soaking the product in the step (2) by a surfactant solution; (4) soaking the product in the step (3) by the aqueous alkali; (5) soaking the product in the step (4) by radiation protection reagent solution of which the pH is 5.8-7.8; (6) soaking the product in the step (5) by PBS (phosphate buffer solution); and (7) orderly carrying out frozen drying and irradiation sterilization on the product in the step (6), so as to obtain the skin patch. The surgical patch provided by the invention is a natural collagen membrane material, can be well fused with an organism, and can effectively prevent exogenous repair.

Implantable medical grafts fabricated of metallic or pseudometallic films of biocompatible materials having a plurality of microperforations passing through the film in a pattern that imparts fabric-like qualities to the graft or permits the geometric deformation of the graft. The implantable graft is preferably fabricated by vacuum deposition of metallic and / or pseudometallic materials into either single or multi-layered structures with the plurality of microperforations either being formed during deposition or after deposition by selective removal of sections of the deposited film. The implantable medical grafts are suitable for use as endoluminal or surgical grafts and may be used as vascular grafts, stent-grafts, skin grafts, shunts, bone grafts, surgical patches, non-vascular conduits, valvular leaflets, filters, occlusion membranes, artificial sphincters, tendons and ligaments.

The invention belongs to the technical field of surgical patches, and provides an artificial rotator cuff patch capable of inducing tendon-bone gradient structure formation and a preparation method thereof. The method comprises the following steps: selecting PET yarns as an inner layer and a gelatin solution in which CTGF, KGN and induction factors of nano-hydroxyapatite are respectively dispersedas an outer layer; spraying the gelatin solution onto the PET yarns by using an electrostatic spinning technology so as to obtian CTGF yarns, KGN yarns and nano hydroxyapatite yarns, wherein the three kinds of yarns are all nanofiber yarns with a double-layer structure; and then performing weaving according to the direction of CTGF-KGN-nano hydroxyapatite to obtain a nanofiber yarn stent with a knitted double-layer structure, namely the artificial rotator cuff patch capable of inducing the formation of a tendon-bone gradient structure. The preparation method of the artificial rotator cuff patch capable of inducing formation of the tendon-bone gradient structure is simple, and the obtained three-section artificial rotator cuff patch can promote formation of the tendon-fibrous cartilage-bone gradient structure, and has good mechanical properties, biocompatibility and clinical application prospects.

The present disclosure relates to a surgical patch and methods of using the same. The surgical patch includes a body having a substrate, a longitudinal slit bisecting at least a portion of the body, and at least one additional slit extending from the longitudinal slit defining a retractable section. The surgical patch of the disclosure may be used, for example, to provide hemostasis at a site of anastomosis. The present disclosure also provides kits including such surgical patches, as well as templates that permit one to cut the patch to a desired size and / or shape.

The invention discloses a degradable medical Zn-Li-Fe ternary alloy material, preparation and application. The material is mainly composed of the following materials: 0.4-4wt.% of Li, 0.1-0.8wt.% of Fe, and 95.2-99.5wt.% of Zn. Before use, the alloy obtained by smelting has to be subjected to thermoplastic deformation machining to refine the alloy structure so as to improve the alloy performance. The zinc alloy provided by the invention has the advantages of excellent comprehensive mechanical properties, good biocompatibility and controllable degradation rate, etc., can be applied as a material for preparing degradable medical implantable devices to preparation of endovascular stents, bone implants, maxillofacial surgery and craniocerebral surgery implantable devices, surgical sutures, various surgical patches, anastomats, vascular clamps or neurorestorative conduits, etc.

The invention discloses an anti-adhesion surgical patch and a preparation method thereof. The preparation method of the anti-adhesion surgical patch comprises the following steps: (1) soaking isolated animal peritoneal tissues by utilizing aqueous alkali; (2) soaking a product in the step (1) by utilizing a surfactant solution; (3) soaking a product in the step (2) by adopting the aqueous alkali; (4) soaking a product of the step (3) by using an irradiation protection reagent solution with the pH of 5.8-7.8; (5) soaking a product in the step (4) by utilizing a phosphate buffered saline (PBS) buffer solution; and (6) sequentially carrying out freeze drying and irradiation sterilization on a product in the step (5), thus obtaining the anti-adhesion surgical patch. The surgical patch provided by the invention is of a natural double-layer membrane structure, can effectively prevent adhesion reaction from being caused, can ensure that endogenous repair to the maximum extent and successfully inhibits exogenous repair.

A manufacturing method for a tetralogy of fallot VSD (ventricular septal defect) patch comprises the following steps of (1) manufacturing a three-dimensional solid model: after heart data are collected, using a postprocessing work station to perform digitalized three dimension reconstruction on original data to obtain a heart shape three dimension image, and further cutting the free wall of a right ventricles dexter with a surgical operation inlet mode to obtain a VSD three dimension image; then generating the two images into an STL (standard template library) format file by numerical control conversion; then inputting STL data into selection laser sintering molding equipment for molding and manufacturing a 1:1 three dimension solid model of a VSD heart; (2), patch manufacturing: shearing a surgical patch from the manufactured three dimension solid model according to the shape of the VSD. The VSD patch with proper shape and size is accurately shorn before the surgery by a patch molding die, the patch material and patch manufacturing time are saved, the cardiovascular deformation is reflected by the three dimension solid model in a 1:1 mode and the teaching level is favorably improved.

The invention discloses a tubular surgical patch and a preparation method thereof. The method for preparing the tubular surgical patch, provided by the invention, comprises the following steps of: (1) soaking and treating an isolated animal tubular membrane tissue by using a surface active agent solution; (2) soaking and treating the product of step (1) by using aqueous alkali; (3) soaking and treating the product of step (2) by using the surface active agent solution; (4) soaking and treating the product of step (3) by using the aqueous alkali; (5) soaking and treating the product of step (4) by using an ethylene glycol solution; (6) soaking and treating the product of step (5) by using an H2O2 solution; (7) soaking and treating the product of step (6) by using an irradiation protection reagent solution of which the pH is 5.8-7.8; and (8) performing freeze drying and irradiation sterilization on the product of step (7) in sequence so as to obtain the tubular surgical patch. The method disclosed by the invention has the advantages of no immune rejection reaction, having good biocompatibility and satisfying mechanical requirements of repaired tissues.

A hernia repair method includes the step of identifying a hernia defect in a patient, the hernia defect having a size, a location, and a shape. The method involves positioning a dispensing instrument laparoscopically into the patient adjacent the hernia defect. According to one step, the method includes dispensing one or more light pipes from the dispensing instrument at predetermined locations. The method also involves advancing the one or more light pipes through the patient's skin. Another step includes coupling a light source to the one or more light pipes. The method also involves generating a pattern of light that indicates one or more of the size, the location, and the shape of the hernia defect. One step includes positioning a surgical patch adjacent the hernia defect in accordance with the pattern of light.

A device for performing surgery on a patient includes: a mesh patch comprising a top surface and a bottom surface; and a removable cover positioned adjacent to and in facing engagement with the bottom surface of the mesh patch. The bottom surface has a plurality of hooks positioned thereon. The cover is removed from the mesh patch as the mesh patch is positioned at a surgical site such that the hooks on the bottom of the mesh patch grip surrounding tissue of a patient and secure the mesh patch to surrounding tissue of the surgical site. A method for performing a surgery using such a device is also provided.

The invention discloses a preparation method of a medical surgical biological patch. The preparation method comprises the following steps: extracting an animal-derived material for pretreatment; treating the pretreated animal-derived material with an organic solvent, conducting dehydrating with gradient alcohol, and performing degreasing; repeatedly freezing and thawing the degreased animal-derived material, and carrying out decellularization; soaking the decellularized animal-derived material in an acidic solution of an enzyme, and carrying out enzymatic digestion; subjecting the animal-derived material having undergone enzymatic digestion to alkali treatment in alkaline solutions with different concentrations; and descaling and sterilizing the animal-derived material having undergone alkali treatment to obtain the medical surgical patch. With the preparation method of the medical surgical biological patch provided by the invention, the obtained biological patch has excellent biomechanical properties and biocompatibility, has no immune exclusion and can induce growth of autologous tissue.

The invention provides a potato medical patch, and relates to the field of surgical patches. The potato medical application comprises a backing layer, a potato hydrogel layer, a controlled release film layer, a first leakage-proof layer and release paper which are sequentially arranged, and the area of the release paper is larger than that of the potato hydrogel layer; the potato hydrogel is prepared from the following components in parts by weight: 10 to 20 parts of potato extract, 1.2 to 2 parts of Arabic gum, 1 to 1.2 parts of sodium polyacrylate, 1 to 3 parts of plant polysaccharide, 0.5 to 2 parts of sodium hyaluronate, 0.2 to 1 part of vitamin C, 0.5 to 1 part of peppermint oil, 8 to 14 parts of glycerol and 30 to 50 parts of water. The potato medical application has the advantages of removing swelling, diminishing inflammation, cooling and repairing tissues.