123 results about "Ligature" patented technology

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 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.

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.

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.

1. The name of this design product: ligature gun with replaceable barrel. 2. Application of this product design: Mainly used for band ligation treatment of internal hemorrhoids of various stages, mixed hemorrhoids or benign rectal polyps. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

This invention relates to a sutureless vascular system, comprising a sutureless blood vessel, an artificial blood vessel, a locking ring, and a fixing ring. The artificial blood vessel is connected to either the locking ring or the fixing ring. The fixing ring and the locking ring are respectively positioned on the inner or outer side of the target blood vessel. The diameter of the locking ring can be increased or decreased to clamp the target blood vessel between the locking ring and the fixing ring. The sutureless vascular system of this invention has a simple overall structure. The operator only needs to align the target blood vessel with the fixing ring or the locking ring, and then tighten or expand the locking ring to complete the connection between the artificial blood vessel and the target blood vessel. The sutureless vascular system has high reliability, good sealing, and no blood leakage. It avoids the vascular torsion caused by the tightening process of the original ligature, which affects hemodynamics. At the same time, the overall operation is simple, the efficiency is significantly increased, and the operation time is effectively shortened.

An automatic ligature-cutting ligation device and a ligation system are provided. The ligation device includes: a handle assembly, including a first handle and a second handle detachably connected to each other; a catheter assembly, an end of the catheter assembly being connected to the first handle; a snare, disposed at another end of the catheter assembly, where a slit is defined in an inner surface of the snare; a ligature, penetrating the first handle and the catheter assembly, where an end of the ligature is connected to the second handle, another end of the ligature has a loop capable of contracting in a forward direction and stopping in a reverse direction, and the loop is pre-mounted in the snare; and a ligature-cutting assembly, disposed in the second handle.

The utility model relates to a loop ligature device suitable for a superfine gastroscope, which belongs to the technical field of medical instruments and comprises a base, a winding shaft rotationally connected with the base is arranged on the base, the base is further provided with a negative suction connector directly facing the winding shaft, and a through hole is formed in the connector wall of the negative suction connector; one end of the sleeve is a superfine gastroscope abutting end, the other end of the sleeve is a ligation end, and the outer wall, close to the ligation end, of the sleeve is sleeved with a plurality of ligation rings; one end of the trigger pull wire penetrates through the sleeve from the superfine gastroscope abutting end of the sleeve and then penetrates out of the sleeve loop ligature end, the trigger pull wire penetrating out of the sleeve loop ligature end is arranged between the loop ligature rings and the outer wall of the sleeve, and the other end of the trigger pull wire penetrates out of the through hole and is connected with the winding shaft. Compared with the prior art, the negative suction connector is arranged on the base of the ligation device, negative pressure suction force can be additionally increased, and the problem that the ligation success rate of the ligation ring is low due to the negative pressure suction force is avoided.

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 present application relates to the field of dental correction tools, in particular to a device for traction of impacted teeth. The device is composed of a traction hook and an appliance. The traction hook is adhered to the crown of the impacted tooth to be tractioned. The traction hook is composed of an adhesive accessory and a ligature wire. One end of the ligature wire is fastened to the adhesive accessory, and the other end of the ligature wire is free and curved into a hook. The appliance is composed of an elastic traction wire and a retaining device. One end of the elastic traction wire is embedded in the retaining device, and the other end of the elastic traction wire is curved and connected to the free curved end of the ligature wire of the traction hook. The device can reasonably adjust the traction direction of the impacted teeth in three-dimensional space, and can correct the impacted teeth in different dentition periods. The device has low requirements for the anchorage teeth, is simple to manufacture, low in price, and has remarkable effects.

The utility model provides a varicosity minimally invasive hook-picking stripping ligation tool which comprises a side bending needle holding rod, a side bending needle is arranged at the end of the side bending needle holding rod, a stripper is arranged at one end of a double-end holding rod, and a hook needle is arranged at the other end of the double-end holding rod. According to the utility model, in one operation, a scalpel is used for cutting the skin with the width of about 2mm, so that blood vessels are prevented from being damaged due to excessive depth, then a side curved needle is used for inserting the needle from the incision end on one side, deeply bypassing the arteriovenous sheath from the bottom, a needle tip is used for withdrawing the needle from the other side end of the incision, the arteriovenous sheath is lifted, the stripping sub-end is used for passively stripping the arteriovenous sheath, and veins are exposed; the vein is lifted by the crochet needle, the artery and the concomitant nerves are avoided, the lateral curved needle is withdrawn, a line is disposed at a lateral curved needle hole, the line penetrates through a vein folding gap lifted by the crochet needle, the vein is ligated and is retracted subcutaneously, and the operation is completed. When the arteriovenous sheath is lifted by the lateral bending needle, the tissue can be fully exposed, pure stripping of the stripper is facilitated, and in the whole operation process, the operation efficiency is improved, tissue damage is reduced, and the operation risk is reduced.