156 results about "Ligature" patented technology

A ligature mitigation drain apparatus and method is disclosed which comprises an outer ring, an inner ring, and a termination ring. The outer ring surrounds the inner ring, and the inner ring surrounds the termination ring. The outer ring further comprises at least two extensions extending toward and touching the inside ring and the inner ring further comprises at least two extensions extending toward and touching the termination ring.

The invention belongs to the technical field of medical instruments, and particularly relates to a multi-continuous-shooting anorectum loop ligature device which comprises a shell, a negative pressure device, a take-up mechanism and a line switching mechanism are arranged in the shell, the shell is connected with a line breaking mechanism, the front end of the line breaking mechanism is connected with a loop ligature head, and the outer surface of the loop ligature head is used for being sleeved with an elastic line knot. A loop ligature cavity used for containing focus tissue is formed in the loop ligature head and communicated with a negative pressure device, the negative pressure device is used for enabling the loop ligature cavity to form negative pressure, two or more threading holes allowing elastic threads to penetrate through are formed in the loop ligature head, and one end of each threading hole is opened in the front end face of the loop ligature head. More than two elastic threads can penetrate through the loop ligature head, after loop ligature of one focus tissue is completed, the multiple elastic threads can be continuously replaced, loop ligature operation can be conducted on multiple focus tissues under the condition that the loop ligature device is not replaced, consumption of medical instruments is reduced, and medical cost is saved.

The present invention is an apparatus and method for ligation of livestock animals. The ligation apparatus or band provides topical active agent(s) that alleviate pain during various ligature procedures. This invention also relates to a method that includes applying a loop or band around a body part for elastomeric ligation, whereby the band material supplies a topical active agent (s) to the body part to reduce the pain of ligation.

The utility model provides a connecting rod driven sewing device. The connecting rod driven sewing device comprises a main body, a moving seat, a sewing piece, a transmission plate, a rotating piece, a transmission rod and a driving piece. The rotating piece, the transmission rod and the driving piece are equivalent to levers, the relation between the power arm and the resisting arm is adjusted by reasonably setting the related length between the rotating piece and the transmission rod, and when small force is applied to the transmission rod through the driving piece, the force is transmitted through the rotating piece and the transmission rod to become large force to act on the transmission plate; according to the utility model, the extrusion seat is arranged between the movable seat and the extrusion seat and is transmitted to the movable seat, so that a relatively large extrusion force can be formed between the movable seat and the extrusion seat, and enough puncture and closing force is provided for the suture piece, so that the suture piece can effectively loop ligature / suture lesion mucous membrane tissues, and the lesion mucous membrane tissues can be safely and effectively treated.

A ligature mitigation drain apparatus and method is disclosed which comprises an outer ring, an inner ring, and a termination ring. The outer ring surrounds the inner ring, and the inner ring surrounds the termination ring. The outer ring further comprises at least two extensions extending toward and touching the inside ring and the inner ring further comprises at least two extensions extending toward and touching the termination ring.

A ligature-resistant liquid / gel dispenser includes a rear housing with a mounting plane surface for securing the dispenser to a wall. The dispenser has a front cover is rotatably coupled and lockable to the rear housing and has an aperture for receiving a pushbutton actuator, and a dispenser pump assembly including a reservoir for storing the liquid or gel. The dispenser also includes carriage for activating a vertical pump extension of the dispenser pump assembly, so that vertical movement of the carriage activates the pump. The carriage is mechanically coupled to the pushbutton actuator when the cover is in a closed position, and horizontal movement of the pushbutton actuator is translated into the vertical movement of the carriage. The cover may be secured to the rear housing with a locking mechanism and may have an exterior that is curved or inclined downward from an apex to prevent attachment of a ligature.

The invention provides a loop and cutter linkage device of an electric loop ligature device. The loop and cutter linkage device comprises a handle, a sleeve, a loop and a cutter which are installed on a shell of the loop ligature device. The sleeve is used for adsorbing haemorrhoids tissues; the ferrule is connected to the adsorption opening of the sleeve in a sleeving manner, is provided with a connecting line and is connected with the shell through the connecting line; the handle is hinged to the shell, the sleeve ring is driven to be separated from the sleeve through one-time percussion of the handle, the cutter is driven to move, and the connecting line on the sleeve ring separated from the sleeve is cut off. The sleeve ring can be sequentially driven to be separated from the sleeve and the cutter can be driven to move to cut off the connecting line by rotating the handle in the same direction, medical workers do not need to additionally prepare external tools such as scissors to cut off the connecting line, and the operation process that the sleeve ring is separated from the ligation device body is greatly simplified.

A drain may include ligature resistant features to inhibit anchoring a ligature or string to or around the installed drain. A drain can include an inlet or upper opening, an outlet or lower opening, and a channel fluidly connecting the upper opening to the lower opening. The channel may be configured to prevent linear flow of fluid from the upper opening to the lower opening and to inhibit anchoring a ligature about any opening or portion of the drain.

The novel loop ligature ring comprises a handle, a push tube, an outer sleeve, an inner hook, a clamping pile and a sleeve belt, and the far end of the handle is fixedly connected with the near end of the push tube and internally communicated with the near end of the push tube; the outer sleeve tightly wraps the push tube and can move along the push tube under a certain push-pull force; the inner hook is installed inside the handle and the push tube, the near end of the inner hook is fixedly connected with an inner hook control ring on the handle, and the far end of the inner hook is tightly attached to the inner wall of the push tube and can be pushed out or pulled into the push tube; clamping teeth which are arranged in parallel are arranged in the clamping pile, and the clamping teeth are inclined towards the near end; the sleeve belt penetrates through the interior of the clamping pile, the near end of the sleeve belt is of a coil structure which can be hooked on the inner hook and is used for traction, the far end of the sleeve belt is provided with a loop ligature ring, the middle of the sleeve belt is provided with a hard clamping belt located in the clamping pile, the hard clamping belt is provided with clamping teeth arranged in parallel, and the clamping teeth of the hard clamping belt incline towards the far end and can be clamped on the clamping teeth in the clamping pile when the sleeve belt is pulled. The novel loop ligature ring for the endoscope has no damage to the gastrointestinal tract wall.

The invention discloses a pancreas strapping tape capable of quantifying strapping pressure, and belongs to the technical field of medical instruments, the pancreas strapping tape comprises a first non-extension section and a second non-extension section, an elastic section and a limiting rope are arranged between the first non-extension section and the second non-extension section, and an insertion hole is formed in the head end of the first non-extension section. The quantitative binding force is provided for the pancreatic stump, sufficient bursting pressure can be provided for the main pancreatic duct, complete pancreatic ischemia and acute pancreatic necrosis caused by too high binding pressure are avoided, and the risk of pancreatic fistula and pancreatitis caused by acute pancreatic necrosis is reduced; due to the design of the limiting rope, whether preset binding tension is reached or not can be easily judged in the binding process; when pancreatic tissue is shrunk in the postoperative process, the strapping tape can still continue to provide strapping pressure through contraction of the elastic section, the strapping pressure generated in the postoperative process is reduced in a limited mode, enough bursting pressure can still be provided for the main pancreatic duct, and the risk of pancreatic fistula caused by insufficient bursting pressure of the main pancreatic duct is reduced.

The application discloses a clamp removing forceps and a jaw thereof, which is used for untying a ligature clamp, the ligature clamp comprising a first clamp arm and a second clamp arm connected by a rotating hinge, the first clamp arm being provided with a first protruding column, and the second clamp arm being provided with a second protruding column; the jaw comprising an upper jaw blade, a lower jaw blade and a pushing piece, the upper jaw blade and the lower jaw blade being openable and closable, the upper jaw blade and the lower jaw blade being respectively provided with a limiting groove and a limiting table, the limiting groove being used for positioning the first clamp arm and the second clamp arm when the ligature clamp is closed, and the pushing piece being used for pushing the ligature clamp when the ligature clamp is opened and for clamping the first protruding column and the second protruding column into the limiting table of the upper jaw blade and the limiting table of the lower jaw blade respectively. The jaw of the clamp removing forceps is provided with the limiting table and the limiting groove in the jaw blade, and the pushing piece is used for assisting, so that the operation difficulty and the damage risk of the ligature clamp are reduced.

The application discloses a deep intracranial tissue suturing and ligature instrument, which can realize suturing and ligature of deep human tissues (especially intracranial surgery). The instrument can realize suturing and ligature of deep tissues in minimally invasive treatment in clinical surgery, and can solve the problems of small operation space, difficult suturing and easy damage to surrounding tissues in traditional surgery. The operation includes two parts of suturing and steering, and the suturing operation is completed by two interchangeable needle holding levers. A universal joint device held by the rear lever can be adjusted in direction according to different requirements, and is used for coping with various complex situations.

The utility model provides a haemorrhoids loop ligature anastomat with a limiting structure, and belongs to the technical field of anastomats. The haemorrhoids loop ligature anastomat with the limiting structure comprises a haemorrhoids loop ligature anastomat part and a limiting assembly. The ligation tube part is mounted at the front end of the handle part; the top ends of the two arc-shaped clamping plates are both fixedly connected with lug plates, a rotating shaft is arranged between the two lug plates in a rotating mode, the rotating shaft is sleeved with a spring piece, the extending end of the spring piece makes contact with and abuts against the opposite faces of the two lug plates, and the two arc-shaped clamping plates are detachably arranged on the outer side of the ligation tube part in a clamped mode. Under the action of an arc-shaped clamping plate, an ear plate and a spring piece, the ligation tube part can be limited, so that an operator can find that the ligation tube part moves towards the interior of the anus or slides towards the exterior of the anus in time during operation, remedy can be carried out, and the error rate of an operation is reduced.

A left atrial appendage ligator having a ligature and operating handle. One end of the operating handle is fixedly connected with a support rod, the inner wall of the support rod is fixedly connected with a feeding pipe and locking pipe. A first sliding groove is formed in the inner side wall of the feeding pipe. The inner side wall of the first sliding groove is slidably connected with a first sliding block. The middle part of the first sliding block is fixedly connected with a feeding push rod. One end of the feeding push rod is fixedly connected with a first hook. One side of the first sliding block is fixedly connected with a return spring. The left atrial appendage ligator has a locking push rod, ligature, hanger knot and supporting component. The ligature is prearranged on a sleeve pipe portion to form the hanger knot to avoid knotting during the operation process. During operation, the knotting can be completed only by locking the hanger knot. The sleeve pipe portion serves as support for threading the other end of the ligature to avoid automatic locking. After the sleeve pipe portion is separated from the hanger knot, the hanger knot can be pulled for automatic locking.

The present application relates to the technical field of medical apparatus and instruments, and discloses an endoscopic internal hemorrhoid ligator. The present application comprises a ligator body, a conversion device, a release pulling device and an elastic ligature device. The ligator body has a suction cavity at one end and is used for connecting a lens of an endoscope at the other end. A telescopic structure at the front end is used for sleeving the elastic ligature device. The telescopic structure is connected with the release pulling device. Under the drive of the release pulling device, the ligator body can perform telescopic movement of the telescopic structure to complete the release operation of the elastic ligature device. The conversion device has a channel for the endoscope to pass through. The two ends are respectively connected with a channel port and a channel cap, thereby providing an operation channel and a support base for the whole ligator. The release pulling device is fixed on the conversion device. By controlling the movement stroke of the ligator body, the reliable release of the elastic ligature device is finally realized. The elastic ligature device is sleeved on the telescopic structure of the ligator body and is used for tightening and ligating internal hemorrhoids after being detached.

The material storage box comprises a storage box body, a box cover capable of being opened and closed is arranged on the storage box body, and a plurality of detachable baffles are arranged in the storage box body to divide the interior of the storage box body into a plurality of independent spaces. The side wall of the storage box body is provided with a plurality of cutting pieces, rubber chain holes and ligature wire bayonets, the rubber chain holes and the ligature wire bayonets are close to the cutting pieces, and the rubber chain holes and the ligature wire bayonets are communicated with the corresponding independent spaces respectively. The material storage box is simple in structure and high in functionality, can be freely combined according to requirements to form storage spaces of different numbers and different sizes, can also rapidly cut off materials when the materials are used, and improves the working efficiency and operation convenience of medical staff.

1. The name of the design product: ligature speed high-frequency blood vessel closure cutting tool head (AH-163XP-S). 2. The use of the design product: the design product is a high-frequency electrosurgical equipment, mainly used for cutting and blood vessel closure operation of biological tissue. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view. 5. The left view has been embodied in the left view enlarged view, and the right view has been embodied in the right view enlarged view.

The invention discloses a high-strength self-lubricating three-layer nested medicine-carrying hollow cervical cerclage band with an auxiliary miscarriage prevention function and a preparation method of the cerclage band, and belongs to the technical field of medical instruments. Degradable polyester monofilaments are woven into a hollow round rope, and the hollow round rope and a medical curved needle are integrated; then carrying out polydopamine-polyethylene glycol double-layer modification on a copper-based metal organic framework (Cu-MOF), and loading active molecules; then mixing the drug-loaded Cu-MOF with collagen natural polymer sol, and uniformly filling the gel into the inner cavity of the round rope and forming a three-dimensional bracket through synchronous drawing type micro-perfusion and light-enzyme synergistic cross-linking; then constructing a transient hydrated lubricating layer on the surface; and finally carrying out ethylene oxide final sterilization to obtain a finished product. The cervical cerclage band device provided by the invention simultaneously provides degradable mechanical support, collagen scaffold induction and long-acting slow release regulation, has a low-friction implantation characteristic, and can be well used for preventing or treating middle and late abortion and premature delivery caused by cervical insufficiency.

The utility model provides an endoscope suturing and resection device which can suck or pull lesion mucous membrane tissue into the endoscope suturing and resection device, so that the mucous membrane tissue sequentially penetrates through a suturing piece and a ferrule treatment piece. Then the control rope is operated to drive the extrusion seat to move in the direction close to the mounting part through the driving device, and the extrusion seat and the mounting part jointly extrude the suturing piece to tighten the suturing piece so as to loop the root of the lesion mucous membrane tissue; and then the lesion mucous membrane tissue is cut off through the ferrule treatment piece. In an operation, the suturing piece is used for carrying out firm loop ligature on the root of a lesion mucous membrane tissue, the loop treatment piece can conveniently cut off the lesion mucous membrane tissue, and meanwhile, the suturing piece can be used for firmly closing a wound surface after the lesion mucous membrane tissue is cut off.

The utility model relates to a ligation clamp with a double-clamping-arm structure, which comprises a ligation clamp body and an upper clamping arm and a lower clamping arm. The rear ends of the upper clamping arm and the lower clamping arm are hinged, and the front ends are locked by a locking structure; the side walls of the front parts of the upper clamping arm and the lower clamping arm are provided with clip applier grasping columns; a first groove which is concave upwards and extends in the front-back direction is formed in the middle of the clamping face of the upper clamping arm. And a second groove which is sunken downwards and extends in the front-back direction is formed in the middle of the clamping surface of the lower clamping arm. The U-shaped ligature clip has the advantages that the groove structure is additionally arranged on a traditional U-shaped ligature clip structure, an upper clamping arm structure and a lower clamping arm structure are further derived, the clamping closing effect that one-time clamping closing is equal to clamping closing of two ligature clips can be achieved through the upper clamping arm structure and the lower clamping arm structure, the problems of slipping and automatic bouncing after installation and closing are avoided, and the ligature clip is convenient to use. And meanwhile, the operation of secondary clamping closing is omitted.

The invention discloses a zebra fish optic nerve ligation model construction system and device, the system comprises an acquisition module, an anesthesia module, a placement platform and a ligation module, the acquisition module is used for acquiring target basic information; the anesthesia module is used for determining target anesthesia parameters according to the target basic information; performing anesthesia according to the target anesthesia parameters; the placing platform is used for placing target zebra fish; the ligation module is used for clamping sclera by using a sterile tissue clamping tool with a fine tip so as to expose optic nerves; the eyeball is lifted through a sterile tissue clamping tool, and supporting pieces are arranged on the two sides of the eyeball to expand the operation space; separating the optic nerve from the blood vessel of the eyeball through a separation tool; ligating the optic nerve through a ligature; and removing the supporting piece, and resetting the eyeball to obtain the zebra fish optic nerve ligation model. By adopting the embodiment of the invention, the zebrafish optic nerve injury and regeneration model for simulating the chronic inflammation environment can be constructed.

The invention relates to a ligature device for body parts, in particular a tourniquet, comprising a closure housing (2) in which a feed-through shaft (230) is formed which extends in the longitudinal direction and is delimited at the bottom by a base wall (27), laterally by two lateral walls (26, 26′) and at the top by a top wall (24), and comprising a ligature strap (3) which, by means of a clipping buckle (5) fastened to the one rear end thereof, is clipped or can be clipped detachably to a rear portion of the closure housing (2) and, with the other end thereof, is guided or can be guided from the rear side through the feed-through shaft (230) in order to form a loop (31) of variable size and can be firmly clamped according to the size of a received body part by means of a clamping means, in particular by means of a rocker (4) that is pivotally mounted in a pivot bearing in the closure housing (2). Advantageous performance characteristics result from the fact that the ligature strap (3) is produced from a rubber-elastic material, such as natural rubber, a thermoplastic elastomer (TPE) or from silicone.

The invention relates to the field of minimally invasive surgical instruments in the anorectal department, and discloses a positioning and pushing device for internal hemorrhoid loop ligature in the anorectal department, the positioning and pushing device comprises a positioning seat, a pushing rod is movably mounted in the positioning seat, a movable ball seat is movably mounted at one end, away from the positioning seat, of the pushing rod, a connecting seat is fixedly mounted at the outer side end of the movable ball seat, and the connecting seat is fixedly connected with the positioning seat. A sleeve is fixedly installed at the outer side end of the connecting base, a pushing cylinder is movably installed on the outer diameter of the sleeve, a rubber ligation ring is arranged on the side, close to the pushing cylinder, of the outer diameter of the sleeve, a control chamber is fixedly installed at the end, close to the positioning base, of a pushing rod, and an upper first rope roller and a lower first rope roller are movably installed on one side of the interior of the control chamber. Through visual precise positioning, multi-dimensional angle adjustment, negative pressure adsorption fixation and one-key loop ligature design, operation is convenient and fast, trauma is small, the internal hemorrhoid basal part can be precisely ligatured, the operation efficiency and safety are improved, complications are reduced, and the patient experience is improved.

The loop ligature device comprises a loop ligature head, a trigger mechanism and a plurality of elastic rings, the loop ligature head is in a hollow tube shape, one end of the loop ligature head is provided with a connecting sleeve, the connecting sleeve is arranged on the head portion of an endoscope body in a sleeved mode, and the elastic rings are connected with the trigger mechanism. The elastic rings are sequentially arranged on the outer side wall of the end, away from the connecting sleeve, of the ligation head in a sleeving mode; the trigger mechanism comprises a trigger line, a traction line, an inner sleeve and an outer sleeve. The trigger mechanism has the advantages that the trigger mechanism is simple in structure and convenient to machine and manufacture, when the trigger mechanism is used, after the spring pin is pressed, the outer sleeve slides to enable the spring pin to enter the adjacent next through hole in the outer sleeve from the previous through hole in the outer sleeve, then an elastic ring can be released, use and operation are simple, and operation is convenient. The length of the traction line dragged by the outer sleeve every time can be accurately controlled, and then one elastic ring can be accurately controlled to be released through single-time operation, so that the surgical operation is more convenient.

An arch bar system for maxillomandibular fixation is disclosed. A contourable, trim-to-fit bar includes a series of elongated oval apertures oriented substantially parallel to the bar axis. The apertures guide wire, coated suture, or other ligatures at varied approach angles, limit vertical clearance to resist slippage, and cooperate with intervening structural columns to distribute loads while the bar is cinched to teeth. Low-profile depending attachment features—cleats and / or J-hooks—project below the lower edge to receive interarch wire loops, guiding elastics, or other connectors. All patient-facing edges and transitions are radiused to minimize gingival and mucosal trauma. Bars may be metal or engineered polymer and segmentable for partial-arch use. Methods include threading ligatures through successive apertures to secure each bar and joining opposing bars at the depending features. Kits include paired bars, ligatures, interarch connectors, and tools.

The utility model discloses a molar mesial movement auxiliary device which comprises a main arch wire, a plurality of orthodontic brackets, an auxiliary arch wire, a ligature wire and an anchorage nail, the main arch wire penetrates through the orthodontic brackets and is fixed with the orthodontic brackets, two question mark hooks of the auxiliary arch wire are sleeved on the main arch wire, and the ligature wire is connected with the anchorage nail. The auxiliary arch wire is further provided with two small circles formed by bending, the small circle in the distal direction is rigidly connected to an anchorage nail planted on the alveolar bone through a fixing ligature wire, and the other small circle is free. According to the utility model, a stable rectangular structure can be formed, after force application, interference caused by lip and cheek movement or feeding is avoided, displacement is avoided, foreign body sensation is reduced, the bad effect of distal movement of anterior teeth and premolars can be avoided, friction force of tooth movement is not increased, and meanwhile, the structure is simple and convenient. And when the molars move forwards, the lip inclination acting force on the anterior teeth is also reduced.

The invention relates to the technical field of gastroenterology, in particular to an endoscope ligation device for the gastroenterology, which comprises an endoscope handle part and an insertion part connected to the head part of the endoscope handle part, a ligation head part is mounted at the head part of the insertion part, a negative pressure adsorption mechanism is arranged on the inner side of the ligation head part, and the negative pressure adsorption mechanism is connected with the endoscope handle part. A plurality of elastic rings are connected to the loop ligature head in a sleeving mode, a trigger push rod switch is arranged on the negative pressure adsorption mechanism and connected with a retracting and releasing mechanism located on the inner side of the loop ligature head, and the retracting and releasing mechanism is connected with the negative pressure adsorption mechanism. The problems that an elastic ring loading process is time-consuming and labor-consuming, complex lesions such as esophageal varicose veins need to be subjected to loop ligature for many times, the treatment opportunity of a patient is easily affected, the head may cause mechanical injury to the esophagus when the device enters the esophagus, and comfort and safety are low are solved.

The utility model relates to the field of medical instruments, in particular to a clip applying device suitable for a double-layer ligature clip. Comprising a handle part, a push tube, an outer tube and a ligation clip placing part, wherein the handle part comprises a movable handle and a fixed handle; the push pipe comprises a front push rod, a connecting rod and a rear push rod; the outer pipe is sleeved outside the push pipe; a ligation clip placing part limiting structure is arranged at the far end of the outer tube; a springback structure is arranged in the outer pipe; the ligature clip placing part comprises an outer sleeve and a piston; the double-layer ligature clip can be placed in the outer sleeve by the aid of the ligature clip placing portion, the piston can be pushed by the front ejector rod, the double-layer ligature clip can be operated by the piston, and the push tube cannot be in direct contact with the ligature clip and cannot be contaminated by blood generated in an operation. The placing part limiting structure can limit the outer sleeve, and the outer sleeve is prevented from falling off in the operation process; the clip applying device can be repeatedly used due to the springback structure, so that the cost is reduced.

A stent graft for treating an arterial aneurysm includes loops fixed to struts of stents, wherein the struts define distal and proximal apices. The ends of a ligature can be linked by a wire in a stent graft delivery system that threads anchor loops longitudinally spanning ends of the ligature to maintain the stent in a radially constricted position during delivery to the aneurysm. A delivery system and method for implanting a stent graft prosthesis includes and employs a torque component at a distal end of the stent graft prosthesis, whereby following advancement of the stent graft to a surgical site in a constrained or partially constrained configuration, torque is applied to the torque component to rotationally align the stent graft about a longitudinal axis of the stent graft, followed by deployment of the stent graft in correct rotational alignment. A delivery system and method of its use includes an apex capture assembly, a leg clasp, and a leg stop for capturing a stent graft during orientation and stabilization at an implantation site of a surgical site.