42 results about "Great saphenous vein" patented technology

This invention is an improved method and device for treating varicose veins 200 or the greater saphenous vein 202. The method comprises the use of infrared laser radiation in the region of 1.2 to 2.2 um in a manner from inside the vessel 200 or 202 such that the endothelial cells of the vessel wall 704 are damaged and collagen fibers in the vessel wall 704 are heated to the point where they permanently contract, the vessel 200 or 202 is occluded and ultimately resorbed. The device includes a laser 102 delivered via a fiber optic catheter 300 that may have frosted or diffusing fiber tips 308, or that may be provided with a protective spacer. A motorized pull back device 104 may be used, and a thermal sensor 600 may be used to help control the power required to maintain the proper treatment temperature.

Described are devices, methods and systems useful for achieving occlusion of vascular vessels. Percutaneous procedures can be used to occlude and obliterate the greater saphenous vein, for example in the treatment of varicose vein condition caused by venous reflux. Certain embodiments encompass the percutaneous delivery of an occlusion device inverted within a cannula, its deployment and filling, so as to occlude or obliterate a portion of a vascular vessel.

Described are devices, methods and systems useful for achieving occlusion of vascular vessels. Percutaneous procedures are used to occlude and obliterate the greater saphenous vein, for example in the treatment of varicose vein condition caused by venous reflux. Certain embodiments encompass the deployment of one or more vascular occlusion devices via a through-and-through percutaneous procedure that leaves the vascular occlusion device or devices in a through-and-through condition.

A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO₂ insufflation for enhanced maintenance of the operating cavity.

The present invention is a method and device for harvesting a vessel. The vessel harvester comprises an internal stenting catheter with proximal and distal ends, a sheath catheter with proximal and distal ends, and a cylindrical cutting tube that is attachable to the distal end of the sheath catheter. The vessel harvester is used to harvest vesseal such as the greater and lesser saphenous veins, the basilic vein, the cephalic vein, and the radial artery.

A device and method for maintaining pressure onto a blood vessel is disclosed, and include a tissue-confining device having two parallel longitudinally extending bars which extend between a proximal end and a distal end and at least one strap attachable to tissue in the vicinity of the blood vessel and affixable to an element connected to the tissue-confining device, for retaining the tissue-confining device in compressing contact with tissue in the vicinity of the blood vessel. The device is suitable for inducing hemostasis and for maintaining post-hemostasis pressure, large saphenous vein closure, post-pseudoaneurysm closure, and conglutination of fragmented portions of a burst artery.

The invention discloses a novel inversion-preventing great saphenous vein stripper chuck. A longitudinal assembling slot is arranged on a main body of the novel inversion-preventing great saphenous vein stripper chuck; one end of the main body is provided with a round blocking surface; a round concave groove which is concentric with the assembling slot is arranged in the middle of the round blocking surface; the assembling slot is used for blocking and stopping a rope body and a blocking block of a pulling rope; the round blocking surface is used for blocking a vessel in a vessel stripping process, thereby avoiding the vessel from inversing; a clamping part is arranged on the other end of the main body far away from the assembling slot. With the adoption of the mode, the stripped vessel is effectively avoided from the inversion phenomenon in an operation, and the damages to endangium and peripheral vessel tissues of the stripped vessel are reduced furthest; with the special chuck design, only the pulling rope penetrates the vessel, so that the penetrating property of the product is improved and the product is convenient to operate.

A varicose vein peeling device is provided. A spiral guiding head end (1) is connected with a tail end (4) via a plastic guide wire (2); at least four separation blocks (3) are arranged on the plastic guide wire (2); each spherical crown clamping peeling head (5) is formed by a round crown head (5-1) and a round truncated cone seat (5-2) axially clamped with each other; a center hole (5-4) is formed in an axial middle parts of the round crown head (5-1) and the round truncated cone seat (5-2); and an opening side slot (5-3) is respectively formed between outer walls of the round crown head (5-1) and the round truncated cone seat (5-2) and the center hole (5-4). The peeling head rotary clamping assembling structure is rationally structured and smartly designed; peeling heads of various external diameters can be conveniently selectively assembled and exchanged; great saphenous veins and varieose branch veins with lesions can be accurately peeled in a soft and smooth way on the whole; peeling trajection can be easily implemented; friction force of cutting surface tissues can be reduced; vasculopaty parts can be easily passes through; the peeling head cannot fall off, so operational risk can be reduced; and the varicose vein peeling device can be flexibly operated and reduce patient pains and blooding time.

This invention is an improved method and device for treating varicose veins 200 or the greater saphenous vein 202. The method comprises the use of infrared laser radiation in the region of 1.2 to 1.8 um in a manner from inside the vessel 200 or 202 such that the endothelial cells of the vessel wall 704 are damaged and collagen fibers in the vessel wall 704 are heated to the point where they permanently contract, the vessel 200 or 202 is occluded and ultimately resorbed. The device includes a laser 102 delivered via a fiber optic catheter 300 that may have frosted or diffusing fiber tips 308. A motorized pull-back device 104 is used, and a thermal sensor 600 may be used to help control the power required to maintain the proper treatment temperature.

The invention discloses a self-locking clamping head device of a great saphenous vein stripping catheter. The device comprises a clamping head nut and a self-locking screw, a jamming position is arranged at the top of the self-locking screw, a self-locking thread is arranged in the middle of the outer side of the self-locking screw, a taper guiding piece is arranged at the lower end of the self-locking screw, and a longitudinal assembling groove is formed in the inner side of the self-locking screw; a longitudinal inner thread matched with the self-locking screw is arranged in the middle of the inner side of the clamping head nut, a taper groove is formed in the lower end of the inner side of the clamping head nut, a round hole concentric with the longitudinal assembling groove of the self-locking screw is formed in the bottom of the clamping head nut, and the round hole is communicated with the taper groove. The self-locking clamping head device is simple in structure, a blood vessel and a stripping head are fixed with an arc clamping head nut body and the self-locking screw, operation threads used in traditional operations are substituted for fixing the blood vessel and the stripping head, the working efficiency can be effectively improved, operation time can be effectively shortened, and patient pains can be alleviated.

The invention relates to the technical field of surgical items, in particular to a great saphenous vein drawing and peeling tunnel hemostat. The great saphenous vein drawing and peeling tunnel hemostat comprises a left clamping arm and a right clamping arm, wherein the left clamping arm and the right clamping arm are crossed and are hinged to each other; the clamping arms on the upper portion of a hinged shaft form a handheld portion; lower portions of the left clamping arm and the right clamping arm on the lower portion of the hinged shaft are clamping portions; soft pads are respectively arranged on opposite inner side walls of the two clamping portions; one end of a spring is arranged on the left clamping arm or the right clamping arm between the hinged shaft and the clamping portions; the other end of the spring is arranged on the right clamping arm or the left clamping arm between the hinged shaft and the clamping portions; and the tightness of the spring can be adjusted. The great saphenous vein drawing and peeling tunnel hemostat has the advantages that in a great saphenous vein drawing and peeling surgery, labor and vigor which are required in the surgery are reduced, the mental stress of medical staff is greatly relieved, the safety of the surgery is improved, and the efficiency of the surgery is also improved obviously.

The invention relates to the field of medical equipment, in particular to a great saphenous vein detacher. The great saphenous vein detacher comprises a metal wire and a detacher head, wherein the detacher head is connected to one end of the metal wire, the other end of the metal wire is fixedly connected with a fixing plate, the fixing plate is provided with an air bag, the metal wire is providedwith a communication cavity, the detacher head has elasticity, the detacher head is provided with a cavity, the detacher head is communicated with the air bag through the metal wire, the outer side of the fixing plate is provided with a slow moving mechanism, a fixing frame is connected between the slow moving mechanism and the fixing plate, the fixing plate is slidably connected to the fixing frame, the fixing plate is provided with a chuck clamped on the fixing frame, the slow moving mechanism is provided with a pushing handle, and the slow moving mechanism is provided with a squeezing mechanism used for squeezing the air bag, and a connecting mechanism is detachably connected between the slow moving mechanism and the fixing plate. The great saphenous vein detacher has the advantages that the detacher head moves slowly in the vein, and the pain of a patient is reduced.

The invention relates to the technical field of intimal hyperplasia, in particular to a preparation method and application of a hyaluronic acid-heparin adhered acellular great saphenous vein patch. The preparation method of the hyaluronic acid-heparin adhered great saphenous vein patch comprises the following steps of (1) taking out great saphenous veins in vivo, putting the great saphenous veinsin heparin saline at 4 DEG C, and carrying out decellularization treatment by adopting 1% SDS; adopting hyaluronic acid surface adhesion for the decellularized great saphenous vein, and the adopting the heparin surface adhesion to prepare a hyaluronic acid-heparin adhered decellularized great saphenous vein patch; and (2) implanting the hyaluronic acid-heparin adhered acellular great saphenous vein patch in vivo. After the hyaluronic acid-heparin is adhered to the acellular great saphenous vein, the surface of the great saphenous vein becomes smooth; the hyaluronic acid-heparin adhered acellular human great saphenous vein patch has a relatively strong antithrombotic effect in vitro; and in vivo, intimal hyperplasia thickness can be significantly reduced after venous and arterial patch formation.

The invention relates to a specimen making method for a human cerebrovascular interventional operation, which comprises the following steps of selecting a human specimen and performing preservative treatment on the human specimen; selecting materials, wherein the head, the thorax and the abdomen are reserved, part of ribs and sternum are removed, upper limbs on the two sides are removed, and the middles of thighs are cut open; annularly sawing the top of the craniotomy, removing skin superficial fascia on the right side of the face, displaying parotid gland, removing skin superficial fascia onthe left side of the face, and exposing maxillary artery and branches; reserving partial skin and superficial fascia on the right side of the lower limb, removing the skin and superficial fascia on the left side, and displaying great saphenous veins, femoral arteries and branches; in the thoracic cavity: removing superficial fascia and deep fascia, and exposing heart appearance and head and arm stems; bleaching and washing the specimen; cleaning redundant tissues on the surface of the specimen; threading a guide wire, wherein in the right groin area, the guide wire is slowly inserted along the femoral artery till the common iliac artery, the internal carotid artery and the basilar artery are reached. And the prepared specimen has strong sense of reality, is beneficial to specimen observation, and is convenient for teaching and learning.

The invention relates to a medical compression stocking, which is formed by a waistband, a connecting band and a stocking body. The waistband is provided with an elasticity adjusting part; a waistbandconnecting part is arranged on the upper end of the connecting band and is connected with the waistband; a length adjusting part is arranged in the middle of the connecting band; a stocking body connecting part is arranged on the lower end of the connecting band; the lower end of the connecting band is connected with the upper end of the stocking body through the stocking body connecting part; the stocking body is provided with tubular feet parts and tubular shank parts; toe parts of the tubular feet parts of the stocking body are opened; a zipper is arranged on the stocking body along a great saphenous vein; an inner linear cloth is arranged on the inner side of the zipper; a covered button is arranged on the inner linear cloth. The medical compression stocking provided by the inventionhas the advantage of capability of treating varicosity.

The invention is directed to a method of non-invasively treating a varicose vein (2), for example the Great saphenous vein (GSV), wherein the vein or the vein system to be treated is divided into sections (6a, 6b, 6c, 6d) with a length (11) separated by a spacing (s1). The sections can be pre-defined before the treatment, for example to target a junction (4) to a tributary (3), or with respect to the sapheno-femoral junction (8), and can vary in length and location, for example to avoid a sensitive structure (7) such as nerves.

The invention discloses a great saphenous vein minimal invasion segmented harvesting assisting device. The assisting device comprises a cross bar, support plates and dilators, wherein the cross bar runs through two support plates which are arranged in parallel at an interval, and the inner surface of each support plate is provided with the dilator in an extending manner. When the assisting deviceis applied to segmented harvesting of a great saphenous vein, the incision length can be shortened, and the length of a subcutaneous tunnel is prolonged, so that a surgical scar on a leg after a surgery can be nice; and furthermore, operation can be performed by a single person when the great saphenous vein in the subcutaneous tunnel is dissociated, tissues are clearly exposed, sufficient hemostasis is realized after surgery, and damage on the great saphenous vein can be avoided.

The invention discloses a novel great saphenous vein stripper handle. A holding part is arranged on a clamp body of a novel great saphenous vein stripper, an assembly groove is formed in the middle position of the holding part of the body, a locking device is arranged below the assembly groove, the assembly groove is used for clamping a pulling rope, and the pulling rope is locked through the locking device. Through the mode, the stripper handle can lock the pulling rope at any position during the use process, so that the stroke of the handle is effectively shortened, and the stripper handle is convenient to operate.

The invention discloses a great saphenous vein blood vessel collateral cutting scissor device and a using method, and belongs to the technical field of cardiothoracic surgery medical treatment. The structure of scissor ends is as follows: an upper crescent scissor blade and a lower crescent scissor blade are fixed on a connecting shaft by a rivet, the upper crescent scissor blade is provided withteeth, and a built-in slot is arranged in the middle of the lower crescent scissor blade; and the scissor blades are provided with sharp sawteeth and are pressed together up and down, and the upper crescent scissor blade and the lower crescent scissor blade are bent. The structure of scissor handles is designed based on human engineering, operation obstacles can be reduced, operation is easy and convenient, and mastering is easy. The device has the advantages that the perfectness ratio of a bridge blood vessel is increased, and the hidden damage caused to the bridge blood vessel when a high-temperature electrocoagulation method is adopted to stop bleeding of a collateral blood vessel and disconnect the collateral blood vessel is avoided; and the blocking of the great saphenous vein collateral blood vessel is realized completely through physical clamping of a degradable titanium clamp, and the physical pressing, shearing, separating and ligation are achieved through the scissor ends, sothat the success rate of the bypass surgery can be increased, the re-blockage probability of the bridge blood vessel is reduced, and the survival time of a patient is prolonged.

The invention relates to an appliance for compression hemostasis in great saphenous vein exfoliation, a clamping interval for clamping legs is reserved between two pressing pieces, the power output end of a width adjusting mechanism is connected to the two pressing pieces respectively, and the distance between the clamping interval between the two pressing pieces is adjusted through the width adjusting mechanism, so that the legs can be stopped by pressing the legs. Meanwhile, the unlocking button is pressed to act on the locking piece, so that the locking structure unlocks limiting of the movable plate, and the movable plate can move relative to a substrate; By means of the mode that the movable plate and the substrate are movably connected and flexibly adjusted, compared with an existing tool, not only can the compression strength be adjusted to achieve compression hemostasis on the legs, but also the position of the movable plate can be adjusted according to the leg shapes of different people, that is, the actual compression length of the whole pressing plate can be adjusted, and therefore the pressing plate is matched with the leg shapes of different patients; The traditional Chinese medicine composition has strong compatibility clinically and is very practical.

An appliance 10 for large saphenous vein varix treatment comprises a stainless steel guide wire 1 provided on a distal end with a guide portion 11 and on a proximal end with a coupled portion 12, an absorption thread 2 connected to the proximal end coupled portion 12 of the guide wire 1, a transparent flexible bag 3 for containing the absorption thread 2, and a sterilization holding case 4 for containing the guide wire 1 and the transparent flexible bag 3 in a sterilized condition. Upon use, the sterilization holding case 4 is opened, a vein sclerosing agent is injected into the transparent flexible bag 3, and the vein sclerosing agent is impregnated into the absorption thread 2.