53 results about "Graft procedure" patented technology

A coronary artery bypass graft procedure is performed through one or more openings made in the patient to create a point of entry to the thoracic cavity. A vein measurement device measures the distance between the proximal and distal anastomotic sites for each graft. A proximal anastomosis tool splits to release a graft vessel after deploying an anastomosis device at the proximal anastomosis site. The tool may be articulated. An integrated stabilizer stabilizes one or more tools relative to the surface of the beating heart at a distal anastomotic site. A distal anastomotic tool may be provided as part of the integrated stabilizer, and connects one end of the graft vessel to a target vessel. An epicardial dissector may be provided as part of the integrated stabilizer, and dissects the epicardium from the target vessel at a distal anastomotic site, as needed.

Systems and methods for performing transcatheter coronary artery bypass grafting procedures are provided. The methods generally involve passing the graft from the aorta to the coronary artery through the pericardial space. The systems include poke-out wires, a coring device, and devices for forming anastomoses at the proximal and distal ends of a vascular graft.

A method for performing a coronary artery bypass graft procedure on a patient to connect a bypass vessel to a target vessel includes the steps of creating an opening in the patient that communicates with the thoracic cavity of the patient; providing a bypass vessel having a lumen and at least one free end; passing the free end of the bypass vessel from the thoracic cavity through the opening to a position outside the body of the patient; attaching a connector to the free end of bypass vessel while the free end of the bypass vessel is outside the body of the patient; passing the free end of the bypass vessel from the position outside the body of the patient through the opening and into the thoracic cavity; and connecting the free end of the bypass vessel to a target vessel with the connector.

A device used to hold and position a blood vessel in the performance of a coronary artery bypass graft procedure includes a handle and an attachment head coupled to the handle. The attachment head has a collar adapted to substantially encircle the blood vessel and having a number of suction apertures. A vacuum port is adapted to be coupled to a vacuum source and communicates a suction to the suction apertures to hold the blood vessel.

Needle injectors and injector carriers for endothelial keratoplasty are provided. Needle injectors include first, second, and third portions each having a respective conduit therein. A first end of the second conduit is fluidly coupled to a second end of the first conduit, where the second conduit has a maximum diameter greater than a maximum diameter of the first conduit. A first end of the third conduit is configured to be fluidly coupled to a second end of the second conduit, where a second end of the third conduit is configured with a cutting surface for cutting and penetrating eye tissue. Injector carriers include a container, a cap configured to seal an opening of the container, and a coupling means configured to couple the needle injector to the cap and allow the needle injector to be disposed within the container.

A method and device are disclosed directed at harvesting of vessels, such as arteries and veins, especially as required in vessel grafting procedures. The device and method discloses a cannula-like device that provides, identification, capture, manipulation, hemostasis and cleavage of branch vessels from the harvested vessel without need for further devices. In certain preferred embodiments of the disclosed method and device, the disclosed harvesting device achieves branch vessel cleavage and hemostasis without the use of heat producing means such as cautery. In addition, certain embodiments utilize a clip/coil magazine technology so as to enable severance and hemostasis of multiple branch vessels without need for removal of the device from the surgical site. Further embodiments disclose the incorporation and use of irrigants containing CO2, as well as other agents capable of stimulate release of nitric oxide from vascular endothelium are applied to subject vessels so as to enhance the viability of vessels to be harvested as graft material.

Tissue-engineered vascular graft is designed to be used in cardiovascular surgeries, especially in coronary artery bypass grafting and peripheral vessels reconstruction procedures. Two-phase electrospinning technique was employed to fabricate a biodegradable polymer graft composed of the porous tubular scaffold supplemented by biologically active molecules, incorporated directly into the matrix walls in order to promote regeneration process of the patient's own vessel wall.

An intravascular balloon occlusion device according to the invention is shown. The device is ideally suited for use in a coronary artery bypass graft procedure. The device includes a body having at least one selectively inflated balloon provided on the distal end thereof. Preferably, the body is a closed end body so that fluid can only flow from the proximal end of the body into the balloon. In use, the distal end of the body and the balloon are inserted into an aperture provided in the aorta. The balloon is inflated and then the device is retracted until the balloon seats against the incision or aperture in the aorta, thereby effectively sealing the aperture from the blood flow through the aorta, but not occluding blood flow through the body of the aorta itself. Next, the graft vessel is telescopically positioned on the occlusion device and mounted to the aorta. Once the vessel is secured thereto, the balloon is deflated and then the occlusion device is retracted from both the aorta and the graft vessel. Finally, the second end of the graft vessel is mounted to the appropriate coronary artery.

The present invention relates to tissue preservation for autologous and heterologous transplantation. In particular the present invention provides compositions and methods for the long-term storage of surgical conduits ex vivo for subsequent use in coronary artery bypass grafting.

Minimally invasive techniques utilized in bypass grafting are disclosed. For instance, a method of implanting an end portion of a graft in the body of a patient during a bypass grafting procedure includes the steps of (i) advancing a medical instrument within a circulatory system of said body, (ii) guiding a distal end of said medical instrument out of said circulatory system through an opening defined in said circulatory system after said medical instrument advancing step, (iii) advancing said end portion of said graft within said medical instrument after said guiding step, and (iv) securing said end portion of said graft to a blood vessel of said circulatory system after said end portion advancing step.

The tunneling method for dental block grafting is surgical method for increasing the thickness of the soft tissue of the mouth prior to performing block grafting procedures for dental implants. The method includes cutting a pair of incisions in the mucosa. A tunnel is formed through the mucosa which extends between, and connects, the pair of incisions. The tunnel is then extended coronally to undermine tissue covering the recipient site. An acellular dermal matrix is then sutured to an exposed end of a dental implement pulled through the tunnel to position the acellular dermal matrix within the tunnel. The acellular dermal matrix is then positioned over the recipient site using a periosteal elevator, and the acellular dermal matrix is fixed coronally by suspension sutures. The pair of incisions are closed with interrupted sutures, and a block graft is fixed to the recipient site by a pair of titanium screws.

A thoracic structure access system for retracting biological tissue and providing access to internal biological structures; particularly, intrathoracic structures, e.g., the heart and internal mammary arteries, to facilitate entry through the biological tissue with surgical instruments and interaction of the surgical instruments with the intrathoracic structures during a thoracic surgical procedure; particularly, minimally invasive CAGB and OPCAB procedures. The system facilitates coronary artery bypass graft (CAGB and OPCAB) procedures via a simple incision at a transxiphoid incision site and, hence, without fully transecting the sternum, i.e., performing a full sternotomy, or performing a thoracotomy. The system includes modular retractor and retention arm assemblies in communication with a ratchet assembly. When the system is disposed proximate a transxiphoid incision site and the modular retractor and retention arm assemblies are releasably engaged to opposing biological tissue portions at the transxiphoid incision site, the ratchet assembly can be actuated to apply opposing forces to the biological tissue portions to provide an access space at the transxiphoid incision site.

The invention discloses a bed nursing and rehabilitation integrated device for a patient after the clinical kidney transplantation operation. The device is characterized in that firstly, through the cooperative action of a second electric push rod, a protective cover and an air purifier, not only can a wound be isolated from the outside to achieve the purposes of preventing infection and pressure, but also the body of the patient can be fixed to effectively prevent the condition that secondary hurt is caused when the patient turns over in the sleeping process, the healing effect of the wound is also improved, secondly, by means of the combination of a second stepping motor, a third electric push rod, a fourth electric push rod, a first connecting frame and lower limb exercise sleeves, stretching exercise of the lower limbs of the patient can be achieved, blood circulation of the legs of the patient is promoted, and complications are effectively avoided; and finally, by means of a third stepping motor, a fifth electric push rod, a sixth electric push rod, a second connecting frame, regulation and control blocks, guide sleeves and telescopic rods, the upper limbs of the patient can be exercised, besides, convenient adjustment can be achieved, and the nursing and rehabilitation requirements of the patient after the clinical kidney transplantation operation are finally met.

A method for planning a bone grafting procedure includes the collection of imaging scan data of the target region and of a harvest region as a source for a bone graft complementary to the target region. Virtual bone model and harvest regions are generated. A computer processor determines at least one parameter for a bone graft model complementary to the target region. A location at the harvest region for the bone graft is identified based on the bone graft model. The location of the harvest region is registered to a first computer-assist device and the bone graft is harvested. The target region is registered to the first computer-assist device or another device. The cutting characteristics for the target region are communicated to the first computer-assist device or the other device to receive the bone graft. A surgical system for performing the computerized method is also provided.