69 results about "AV Anastomosis" patented technology

A method for forming an anastomosis between first and second organs in a patient using a hollow receptacle that is inflatable with magnetic material. The method may include forming openings through the first and second organs utilizing a hole-forming instrument inserted into the organs through a natural orifice in the patient. The hollow receptacle may be supported on a catheter assembly that is also inserted through the patient's natural orifice and through the openings in the first and second organs and is positioned within the second organ. The hollow receptacle is then inflated with magnetic material and magnetic force is applied within the force organ to draw the inflated receptacle toward the first organ such that the inflated receptacle retains the second organ in sealing contact with the first organ while maintaining the alignment between the first and second openings to create an anastomosis between the first and second organs.

Provided herein is a device for use in an anastomosis of tissue(s) comprising a biocompatible material and a means of applying radiofrequency energy or electrical energy to generate heat within said biocompatible material. The device also may be used to bond or fuse at two materials where at least one of the material is a tissue. Also provided are methods to anastomose tissue or to bond or to fuse these materials using these devices.

An external stent type prosthesis is provided that is extraluminal, with at least one tubular member, interconnectable in an upper end, and inflatable by a balloon with a central lumen, single but with multiple projections in equal plurality of tubular members of the stent which is adjusted in its interior, for side-to-side, end-to-end, end-to-side anastomosis without clamping and sutureless, or with expeditious clamping and sutureless, where the vascular graft, or anastomotic trunk, or any other grafts, inserted in the lumen of the balloon and prosthesis, comprising a distensible mesh and after being coated with graft, this mesh is expansible by the balloon until the necessary gauge to keep the graft wall joined together and sealed in relation to the organ wall, that can contain a bag suture around the place where the anastomosis is made.

A surgical instrument for creating an anastomosis includes a housing, a handle extending from the housing and a fastener support member extending distally from the housing. The fastener support member is configured and dimensioned to releasably support a plurality of surgical fasteners. The instrument further includes a tissue retaining mechanism which is selectively movable from a first position relative to the fastener support member to a second position in closer proximity with the fastener support member such that tissue disposed adjacent to the fastener support member is retained thereagainst. Upon actuation of the handle, a fastener firing mechanism simultaneously deforms the plurality of surgical fasteners to complete the anastomosis.

The invention provides an extra-cavity anastomotic method. The extra-cavity anastomotic method includes enabling two broken ends of a hollow organ to be anastomotic to penetrate from intermediate through holes from a nail bin and a base relatively and reversely overturning outwards to expose the anastomotic positions of the two broken ends, sewing the anastomotic positions of the two broken ends by sewing nails and excising the residual ectropion part of the hollow organ by a rotary cutter. The invention further provides an ectropion type extra-cavity anastomat. An outer casing is a three-way pipe, a nail bin is fixed in a nail bin connecting pipe, the base and the nail bin are coaxially and relatively arranged, and the axes of the nail bin and the base are parallel to the axis of a base connecting pipe; the nail bin and the base are annular, a ring cutter is mounted in the nail bin and embedded in the end face of the nail bin and can axially move in the nail bin, and the end face of the base is provided with a ring slot matched with the ring cutter. The nail bin and the base are not coaxial with the outer casing, the two broken ends of the hollow organ to be anastomotic conveniently penetrate the intermediate through holes of the nail bin and the base, and extra-cavity anastomosis is realized.

A device for assisting in anastomosis of tubular structures. The basic device has a generally cylindrical shape with a pair of insertion arms and a central depression that provides a space for the needle to move through within the tubular structures while simultaneously providing support so that the suture needle thrust does not collapse the tubular structure wall. The depression may be configured to guide the path of the needle. A bridge connects the arms and prevents the needle from inadvertently coming in contact with the wall opposite that of the wall being sutured. The method includes an initial suture to join the sutures, inserting the device into the openings of the two structures, placing sutures in the walls adjacent to the depression, optionally rotating the device so the depression is aligned with each suture as it is being placed, removing the device, and tightening the sutures to complete the anastomosis.

The invention provides a magnetic force compressing anastomosis ring, comprising a pair of magnetic rings respectively accommodated in the fractured ends of two tissues to be anastomosed, wherein the two magnetic rings are sucked to tightly clamp the free margins of the fractured ends of the two tissues to be anastomosed. The two magnetic rings of the magnetic force compressing anastomosis ring are respectively placed in the fractured ends of the stomach (intestine), and pressure is tightly applied to the two fractured ends to realize anastomosis under the action of magnetic force, so that occlusion tissues are gradually necrotic because of ischemia, meanwhile, occlusion tissues at fractured ends of the stomach (intestine) gradually heal up through an inflammatory reparative process. Along with the gradual necrosis of the occlusion tissues, the two rings are close to each other gradually, and the magnetic force is further enhanced, so that tight anastomosis is maintained, and the necrosis of the occlusion tissues is sped up. The anastomosis is firm and tight, the operation is simple, the healing process is quick, scars are small, surfaces of wound are smooth, and the gastrointestinal cavity is unobstructed. The anastomosis ring can effectively reduce complications after anastomosis operation such as anastomosis leakage, stenosis and the like, and can guarantee good alimentary tract function after operation, thus being the most advanced alimentary tract anastomosis machinery at present.

Apparatus for performing a surgical anastomosis include a tubular body (102) having an onion portion (114) formed near the distal end of the tubular body. The apparatus includes a sleeve (104) having a radius sized and dimensioned to slidably receive the tubular body therein. The apparatus includes a plunger assembly sized and dimensioned to be slidably received within the central lumen of the tubular body. The plunger assembly includes a distal end configured and adapted to deploy the onion portion.

Prosthetic devices are provided that are used in end-to-side, end-to-end and side-to-side anastomosis without clamping and sutureless, without clamping and with suture, with clamping and sutureless, and / or with clamping and with suture, where the graft is inserted under the light of prosthesis or in at least one of the intraluminal portions of the prosthesis tubular member. The prosthesis can be produced in varied shapes and sizes to accommodate varied sizes and types of grafts, and also can be formed by two halves that can be joined by pressure, bolts or by a rocker portion, and can be made of any proper material for surgical use, such as titanium, stainless steel, nitinol, pyrolitic carbon, silicon, biodegradable materials, or any other biocompatible and inert materials.

The present invention relates to a stapler apparatus, comprising a stapler having a proximal end, a distal end and a longitudinal axis, the stapler further comprising a trigger, an anvil docking pin aligned substantially parallel with the longitudinal axis of the stapler, and a stapling means, the anvil docking pin and stapling means being at the distal end of the stapler, and a detachable anvil, comprising an anvil head and an anvil shaft, wherein the anvil shaft is adapted to receive the anvil docking pin and operation of the trigger causes the stapling means to be actuated, characterised in that the length of the anvil shaft is at least 4 cm. The present invention also relates to a method of forming an anastomosis between two surfaces using the stapler apparatus of the invention and a method of forming a stoma trephine in a subject using the stapler apparatus of the invention.; The present invention further relates to the use of the stapler apparatus or anvil for a stapler apparatus in such methods and a kit of parts comprising the stapler apparatus of the invention and additional components.

The invention belongs to the technical field of medical instruments, in particular to an anastomosis clamp used in an endoscope. The anastomosis clamp comprises a hand shank assembly, a connecting rope assembly and a clamp assembly; the hand shank assembly comprises a first core rod and a second core rod which are arranged in parallel, the first core rod is movably sleeved with a first sliding ring, and the second core rod is movably sleeved with a second sliding ring; the connecting rope assembly comprises a first inhaul cable arranged on the first sliding ring, a second inhaul cable arrangedon the second sliding ring and an outer pipe arranged at the end of the first core rod and the end of the second core rod, and the other end of the outer pipe is connected with the clamp assembly; the clamp assembly comprises a connecting piece, a clamping base arranged outside the connecting piece in a sleeving mode and two clamping pieces fixedly connected to the clamping base, the first inhaulcable sequentially penetrates through the outer pipe, the connecting piece and the clamping base and then is fixedly connected with the first clamping piece, and the second inhaul cable sequentiallypenetrates through the outer pipe, the connecting piece and the clamping base and then is fixedly connected with the second clamping piece. The anastomosis clamp is capable of anastomosing the tissueneeding anastomosis accurately, safely and conveniently in a full-thickness mode in the using process.

A stapling apparatus for performing anastomosis on hollow organs which includes an adjacent aligned pair of stapling jaws for respectively retaining hollow organ ends together in aligned registration for stapling the ends together to form an anastomosis. Each of the stapling jaws has opposing hinged hemostat jaws operable for clamping respective hollow organ ends therebetween prior to stapling. The hemostat jaws include a stapling mechanism for stapling the retained hollow organ ends together.

The invention provides a preparation method of a self-anastomosis artificial intravascular stent. A three-layer artificial intravascular stent similar to a natural intravascular structure is prepared through electrostatic spinning and extrusion printing; anastomosis cannulas with the same inner diameter as an intravascular stent are extruded and printed at the two ends of a double-layer stent formed by the intravascular stent and an intravascular intermediate stent by adopting a shape memory material, so that the deformation of the anastomosis cannulas can be controlled by changing the external temperature; the self-anastomosis of an artificial blood vessel and an autologous blood vessel without auxiliary tools and suture lines is achieved. Results of the embodiment show that after the anastomosis cannulas of the self-anastomosis artificial intravascular stent are inserted into the fracture ends of the autologous blood vessel, heating is conducted; the diameter of the fracture ends of the autologous blood vessel is increased under the support of the anastomosis cannulas, then the anastomosis of the autologous blood vessel and the self-anastomosis artificial intravascular stent is achieved, and the auxiliary tools are not needed.

A system for making anastomoses between hollow structures by mechanical means is provided with a device in the shape of an annular or tubular element comprising circumferentially provided means, such as pin-shaped elements, for joining the abutting walls of the hollow structures together. An applicator is intended for moving said annular or tubular element in position and activating the joining means thereof, so as to make the anastomosis. Possibly, intraluminal joining means can be inserted without using an annular or tubular element.

The invention discloses a microscopic anastomosis training model and a vascular model preparation process for the model. The training model comprises a vascular model, a pipeline connecting system, ablood circulating pump, a base and a supporting platform; the blood circulating pump is arranged in a sealed cavity; a plurality of openings are formed in the supporting platform; the vascular model is communicated with the pipeline connecting system through a joint; and the pipeline connecting system is communicated with the blood circulating pump. The vascular model adopts a specific material and a specific manufacturing process, so that the touch feeling and the structure are close to those of real blood vessels of a human body; the microscopic anastomosis operation training model is helpful for better understanding blood vessel anatomy and anastomosis angles, directions, positions and effects, and the model is used for assisting a trainee to improve the accuracy of blood vessel anatomyseparation and suture. Moreover, after the model is displayed to the patient, the patient can visually and deeply understand physiology, anatomy, characteristics, operation schemes and the like of the neurosurgery operation.

Graft delivery systems and methods for performing a cardiac by-pass procedure using a graft or a mammary artery are described. A combination of catheters and guide devices through the aorta, coronary artery, and the thoracic region can be used to accomplish these procedures.

Prosthetic devices are provided that are used in end-to-side, end-to-end, and side-to-side anastomosis without clamping and sutureless, or with clamping and sutureless, where the graft is inserted in at least one of the intraluminal parts of the tubular member of the prosthesis, and is everted and coated, being previously fixed to the flange. The tubular member and flange are screwed among them in order to make the size of the intraluminal part more flexible.

The stapler of the invention is a surgical stapler / cutter that allows latero-lateral intestinal anastomosis, for both open surgery and laparoscopic surgery, at a distance from the openings used to insert the instrument. The stapler is based on the conventional structure of this type of stapler, and one of the fundamental features thereof is that an interspace (12) that determines a space for inserting the free ends (13, 13′) of the tissues (8, 8′) to be joined, is determined between an articulation shaft (3) of the two jaws (4, 5) of the stapler and the front end at which are disposed forms (6) and vertically movable teeth (9) on which staples (7) are disposed. This prevents the staples for the anastomosis and those for the removal of the pathological area from crossing when the area to be removed is cut. The invention also provides for the inclusion, in the described inter-space (12), of an Infrared Data Association (IrDA) device for testing blood flow that transmits a signal to a luminous signalling device which is visible to the user and which allows the degree of tissue vascularisation to be assessed.

The invention discloses an anastomat with an effect of implementing pre-pressing and a control method of thereof. A propelling rack is driven through a push block by operating a handle, and a swing block is driven to rotate, a pre-pressing sleeve is driven to move toward the far end of the anastomat by utilizing a swing block connecting rod, a swing block push rod and other a plurality of intermediate driving parts, and the jaw of an actuator is closed; and the propelling rack is used for driving the intermediate driving parts of the pre-pressing sleeve to move toward the near end of the anastomat through a percussion rod, and the jaw is opened. According to the anastomat, percussion operations of pre-pressing and cutting anastomosis can be carried out by means of the handle, and the structure of the pre-pressing assembly of the anastomat is simplified.

Flexible tip adapter coupled to a needled wire for a circular stapler ogive trocar invention relates to a surgical instrument that has a flexible tapered end, hollow or solid, continued with surgical thread of varying material and caliber, needled with a straight, curved or semi-curved needle and another rigid end which can be coupled to the rod of the circular surgical stapler. Its use occurs primarily in video laparoscopic surgery, providing a safe transfixion of hollow viscera tissues to be anastomosed. It aims to facilitate the manipulation of the trocar / ogive rod assembly and to minimize the risk of inadvertent injuries to the tissue being anastomosed, consequently reducing the risk of anastomotic fistula.

A surgical instrument for forming an end-to-end anastomosis includes first and second handles each supporting a shaft at a distal end thereof. The proximal ends of each shaft are coupled about a pivot such that movement of the handles correspondingly moves the distal ends of each shaft. A release mechanism is included that is actuatable to pivot a pair of bifurcated legs of each shaft between a first position for receiving first and second vessels and a second position that facilitate release of the respective first and second vessels. First and second posts are supported on each distal end and are configured to support an end of the respective first and second vessels thereon. The posts are adapted to connect to an electrical generator for communicating energy through each end of each respective first and second vessel to form an anastomotic seal.

A medical device for an anastomosis is provided. The medical device distinguishes an inner tubular layer, an outer tubular layer, and a support element defining a longitudinal axis. It further distinguishes two or more independent C-rings distributed and positioned at an acute orientation angle relative to the longitudinal axis of the support element at one end of the support element. The support element and the two or more C-rings are embedded in between the inner and the outer tubular layers. The types of applications one could envision are e.g. a proximal anastomosis, distal anastomosis, or side-to-side anastomoses, in a customized pre-fabricated graft. Embodiments of the invention could also be incorporated into an anastomotic connector device design. Embodiments of the invention could further be envisioned as vascular grafts applications such as Coronary Artery Bypass Graft (CABG), dialysis access grafts and peripheral vascular applications.