118 results about "Ligature" patented technology

The invention discloses a blood vessel ligaturing belt with good biocompatibility, which can not only be used for the blood vessel ligature of deep tissues or during an operation under an endoscope with the aid of a gun-typed blood vessel ligator, but also directly used for the blood vessel ligature of superficial tissues with open wound surfaces. The blood vessel ligaturing belt is made of a most novel composite plastic that can be embedded into human bodies, has good biocompatibility, non-corrosion, antimagnetic and comparative strength with titanium metal, does not develop under X rays, can be left in human bodies for lifelong, has low price and simple operation when in use, saves operation time, reduces the risk of recurrent blood vessel bleeding again, and can remarkably lower operation cost.

The invention relates to a medical instrument, which comprises a handle and a working head connected with the handle, wherein the working head comprises a first rod body part, a second rod body part and a percussion force application member, a forceps bin assembly is arranged on the second rod body part, one end of the first rod body part is arranged on the handle, the other end of the first rod body part is detachably connected with the second rod body part, the first rod body part comprises a first percussion rod, the second rod body part comprises a second percussion rod connected with theforceps bin assembly, and the first percussion rod is used for carrying out percussion driving on the second percussion rod to push the forceps bin assembly so as to ligature target tissue. Accordingto the invention, the first rod body part and the second rod body part are detachably connected, so that after the ligature clamp in the forceps bin assembly arranged on the second rod body part is used up, the new forceps bin assembly is replaced to achieve repeated use of the first rod body part and the handle, and the effect of saving cost is achieved; and a plurality of ligature clamps can beplaced in the forceps bin assembly, so that the problems that the existing instrument cannot achieve ligature clamp continuous emission to cause inconvenient use, surgical risk increasing and the likeare solved.

In order to maximise the pivoting range of the arms in a surgical instrument for the placement of C-shaped ligature clips having two legs connected to one another by means of a bridge section with two clamping jaws, which in an open position receive an open ligature clip between them and are movable into a closed position by approaching one another and in so doing close the ligature clips by their legs approaching one another, with two elastically deformable arms, each bearing a clamping jaw at its distal end, and with a slide, which is displaceable relative to the arms in the longitudinal direction thereof, and which abuts against the abutment surfaces of the arms and as a result of this abutment against the abutment surfaces elastically pivots the arms relative to one another in a pivoting plane out of a starting position into an end position upon displacement of the slide relative to the arms, in association with a small size of the instrument, it is proposed that at least over a part of their length and at least over a part of their width the two arms are arranged in planes running parallel to the pivoting plane and displaced relative to one another and overlap one another at least partially.

The invention provides a ligature clip with a shape memory function, and relates to the technical field of auxiliary medical instruments. The ligature clip comprises a clip body made of a bidirectional shape memory polymer, and the clip body has an initial shape and a temporary shape; the clamp body is suitable for being implanted into a tissue to be sealed and bound in a temporary shape and then responding to external condition stimulation to form the initial shape, and the initial shape is suitable for being wound on the tissue and applying compression force to the tissue to block blood flow. The ligature clip made of the bidirectional shape memory polymer can be reversibly transformed between the initial shape and the temporary shape for multiple times after one-time shaping, the deformation amount can be controlled according to actual requirements in the deformation process, then the compression force applied to a blood vessel is adjusted to control the closing degree of the blood vessel, and therefore the flow of blood passing through the ligature clip is controlled, and some special operation requirements are met. In addition, based on control over the deformation process, the clamping force on the blood vessel can be improved, and an anti-slipping effect is enhanced.

The invention discloses a novel multipurpose loop ligature device. The novel multipurpose loop ligature device comprises a medical surgery silk thread and a gun body, and further comprises a draft device, an operating device and a tightening device, the medical surgery silk thread is knitted into double single knots to form a tightening coil and a loop ligature coil, the cross part of the tightening coil and the loop ligature coil is a tightening knot, and the overall medical surgery silk thread is in a stress state; the gun body is of a cavity structure, and is provided with a vent hole switch and a negative pressure connector which are communicated with the cavity, the vent hole switch is located on a holding handle of the gun body, the negative pressure connector is located at the lower end of the holding handle of the gun body, the inside of the gun body is fixedly connected with the draft device, and the outside of the gun body is movably connected with the operating device through a U-shaped limiting connecting piece. The medical surgery silk thread is still selected and utilized in a loop ligature material, the materials are totally differently from rubber gasket types of materials (including elastic threads), the situation that silk threads which are adopted in manual ligation reoccurs, and the potential safety hazard that massive haemorrhage occurs at a residual end caused when the rubber gaskets are aged and slip off in advance is avoided.

The invention relates to a reamer for a loop ligature rubber ring, comprising a tip part, a middle part and a connecting part. The middle part is connected with the tip part and has a gradually increased cross section radius, and the connecting part is used for matching a sucker. The reamer for the loop ligature rubber ring is characterized in that at least three main supporting ribs are arranged and uniformly distributed on the outer surface of the middle part along the axis direction, and auxiliary supporting ribs can be arranged at both sides of each main supporting rib. By arranging the main supporting ribs, the friction force between the rubber ring and the reamer is effectively reduced so that a medical staff can save time and labor when arranging the rubber ring on the middle part by utilizing the reamer, and the rubber ring and gloves are prevented from winding when the rubber ring is manually arranged. The reamer for the loop ligature rubber ring is also provided with an extending part which is connected with the main supporting ribs and the auxiliary supporting ribs and arranged above the connecting part to effectively prevent the rubber ring from falling into a gap between the reamer and the middle part.

A strainer for a ligature resistant floor drain and a ligature resistant floor drain incorporating a strainer. The strainer includes a top plate with two sets of openings forming rings. A cylindrical extension extends from the top plate at a location between the rings. Also provided are two series of webs, each web of which is located between an adjacent pair of openings in one of the rings. Optionally, a strainer plate is attached to the cylindrical extension and extends at least one of radially inward and outward relative from the cylindrical extension. The floor drain further includes a strainer frame having a receptacle into which the strainer is received.

The invention discloses an elastic loop anus loop ligature instrument which comprises an inner sleeve, an outer sleeve and at least one group of thread push tube components, wherein the inner sleeve is provided with a vacuum pipe; an inner launching sleeve which communicates with the vacuum pipe to suck lesion tissue is fixedly arranged at the front end of the inner sleeve; at least one containinggroove which is distributed along an axial direction to contain elastic loops is formed in the outer periphery of the inner launching sleeve; the outer periphery of the inner sleeve is sleeved by theouter sleeve; the outer sleeve is propped against a wrench which is rotationally mounted on a shell to move relative to the inner sleeve under the action of the wrench; an outer launching sleeve which is arranged at the outer periphery of the inner launching sleeve in a sleeving manner to push all elastic loops to move forwards in a direction close to lesion tissue till sucked lesion tissue is sleeved by elastic loops in containing grooves close to the lesion tissue is fixedly arranged at the front end of the outer sleeve; and the thread push tube components are detachably and fixedly arranged at the outer circumference of the outer sleeve, are correspondingly connected with the elastic loops sleeved by the containing grooves, and are used for withdrawing corresponding elastic loops to tie and bundle the lesion tissue after the lesion tissue is sleeved by the elastic loops. The elastic loop anus loop ligature instrument is convenient to operate since only the wrench needs to be shifted in an operation.

The invention discloses a method and device for rod tube centering and guiding and lifting ring disconnecting and hanging in mechanical well repair operation. The device comprises a lifting ring disconnecting and hanging and rod tube centering mechanism and a driving device used for providing rotation power for the lifting ring disconnecting and hanging and rod tube centering mechanism. The driving device is arranged on a wellhead platform and installed on one side, in linkage with a stand pipe to be lifted, of a wellhead, the driving device is perpendicular to a ligature, and the driving device itself can rotate. The device is installed on the side face, in linkage with the rod tube to be centered, of the wellhead, in the working process, a mechanical arm rotates to the ligature to perform centering and guiding, and after centering, the mechanical arm leaves from the ligature to return to the original place and wait for an instruction. The method and device are suitable for centering stand pipe of the wellhead and disconnecting and hanging a lifting ring in the mechanical operation, and it is ensured that the stand pipe smoothly runs into a well. The method and device have the advantages of being large in centering distance, sparing sufficient space for a traveling system and being small in investment, convenient to operate and the like.

The invention discloses a digital indirect bracket bonding method based on 3D printing. The digital indirect bracket bonding method includes the following steps of: obtaining a digital dentition modelof a patient; accurately positioning a bracket in three-dimensional design software, carrying out outputting and 3D printing of a three-dimensional dentition model with the bracket; manufacturing a transfer tray; and placing the transfer tray on the dental surface of the patient after the transfer tray is internally provided with a bracket and carrying out conventional bonding. When a bracket ofwhich the undercut is not removed is used, an undercut is easily generated on a film pressing type transfer tray; a dislocation force is generated when the transfer tray is removed, and consequently the bonding interface of the bracket is damaged, which causes bonding failures. The undercuts in the gingiva direction and the occlusal surface (or incisal edge) direction are removed so as to preventthe generation of undercuts which cause bonding failures. 1/2 of the brackets with undercuts below the ligature wing in the proximal and distal directions are retained, so that the brackets are prevented from falling off easily after being placed in the transfer tray. Due to the design of removing partial undercuts, the falling-off rate of the bracket after bonding is reduced; the bracket is prevented from falling off in clinical operation; and meanwhile, due to the adoption of a full-package transfer tray, the bonding transfer accuracy is guaranteed.

The invention discloses a loop ligature device and a loop ligature device assembly. The loop ligature device comprises a loop ligature device body, a traction piece, a cylinder and a loop sleeve piece, wherein the loop ligature device body has elasticity; the traction piece is used for pulling the loop ligature device body; the cylinder is provided with a first end and a second end in the axial direction, the first end is far away from a control end of the traction piece compared with the second end, and the loop ligature device body is arranged on the surface of the outer wall of the cylinder in a sleeving mode; and the loop sleeve piece is made of a conductive metal wire, and comprises a ring-shaped first loop sleeve part and a linear second loop sleeve part, the of the second loop sleeve part is provided with an insulating outer sleeve, the cylinder body is provided with a first working channel, and the first working channel is used for allowing the second loop sleeve part to penetrate through. According to the loop ligature device, loop ligature operation can be performed, and a loop ligature target object can be cut off.

The invention belongs to the technical field of medical auxiliary tools or equipment, and particularly relates to a manual prepuce elastic thread loop ligature anastomosis assembly. The assembly comprises a loop ligature anastomat and a connecting piece; the loop ligature anastomat comprises an anastomosis cylinder, a thread carrying cup arranged outside the anastomosis cylinder in a sleeving mode, a loop ligature ring arranged at the top end of the anastomosis cylinder, a thread pressing ring buckled at an opening in the upper end of the thread carrying cup, and a locking piece arranged at the lower end of the anastomosis cylinder; the connecting piece is used for connecting an elastic coil and the loop ligature anastomat; the front end of the connecting piece extends into a connecting port; and the front end of the connecting piece is connected to the elastic coil. The manual prepuce elastic thread loop ligature anastomosis assembly is suitable for a prepuce loop ligature operation,and is compact in structure and convenient to use. When the assembly is used, a patient does not feel uncomfortable, the postoperative foreign body sensation is weak, the fear of the patient, especially a low-age patient, can be effectively reduced, and the operation efficiency is improved. Meanwhile, the assembly can achieve manual flexible operation through a trigger structure, the loop ligaturestrength and the loop ligature speed can be freely controlled, and the flexibility is high.

The invention discloses a loop ligature device. The loop ligature device comprises a loop ligature device body, a traction piece, a cylinder and an endoscope, wherein the loop ligature device body is a rope belt with a locking structure; the traction piece is used for pulling the loop ligature device body; the cylinder is provided with a first end and a second end in the axial direction, the first end is far away from the control end of the traction piece compared with the second end, the cylinder is provided with a loop ligature device fixing piece, and the loop ligature device fixing piece is used for fixing the loop ligature device body to the surface of the inner wall of the first end of the cylinder; the endoscope is at least partially inserted into a cylinder body, and a first working channel is formed in the endoscope; and the traction piece is at least partially located in the first working channel. According to the loop ligature device, the traction piece is arranged in the working channel of the endoscope, so that the loop ligature device body can be effectively pulled by the whole loop ligature device without additionally arranging an auxiliary device, and the loop ligature device is simple in structure and easy to machine.

The invention relates to an anorectal loop ligature device with automatic line tightening and cutting functions. The anorectal loop ligature device comprises a handle, a percussion mechanism arrangedon the handle and a loop ligature mechanism detachably connected with the handle. The anorectal loop ligature device with the automatic line tightening and cutting-off functions adopts a detachable split structure, is more convenient to use, integrates the automatic line tightening and cutting-off functions, does not need to use other tools in the using process, and provides convenience for anorectal operation.

The invention discloses a hemorrhoids loop ligature device which comprises a handle, a suction tube, an endoscope, a loop ligature tube and a rubber ring, wherein one end of the suction tube is connected to the handle, the other end is connected to the loop ligature tube, a lens of the endoscope is located at the loop ligature tube, and a lead connected to the lens passes through an inner cavity of the suction tube and the handle and is then connected to a display screen; the first half part of the loop ligature tube is a hard loop ligature tube, and the second half part is an elastic rubber tube; and an elastic airbag tube is attached on the outer side of the loop ligature tube, the elastic airbag tube is connected to a gas source by a connecting conduit, and the rubber ring sleeves outside of the elastic airbag tube. The hemorrhoids loop ligature device is characterized in that a hemorrhoids affected focus can be accurately found through observation with the endoscope because of integration of the endoscope and a loop ligature device, then accurate loop ligature is realized with the loop ligature device, efficiency is high, treatment effects are good, and pains brought to a patient by such loop ligature can be relieved by a continuous loop ligature mode.

The invention relates to the field of orthodontic tools, in particular to an embedded tooth traction device. The device is composed of a traction hook and an appliance, the traction hook is adhered to a dental crown of an embedded tooth needing traction, the traction hook is composed of an adhesion accessory and a ligature wire, one end of the ligature wire is tied to the adhesion accessory, and the other end of the ligature wire is free and bent into a hook. The appliance is composed of an elastic traction wire and a retention device, one end of the elastic traction wire is embedded in the retention device, and the other end of the elastic traction wire is bent and connected with the free bent end of the ligature wire on the traction hook. According to the device, the traction direction of the embedded teeth can be reasonably adjusted in a three-dimensional space, meanwhile, the embedded teeth in different dentition periods can be corrected, the requirement for anchorage teeth is low, and the device is easy to manufacture, low in price and remarkable in effect.

The invention discloses an experiment method of orthodontic near shifting molar murine animals, which comprises the steps of (1) preparing an orthodontic near shifting molar correcting device: firstly making a rat dentition plaster model, and secondly making anchorage teeth and individualized bands for moving the teeth; and (2) establishing an orthodontic near shifting molar animal model. The invention further discloses the orthodontic near shifting molar correcting device, which comprises an individualized band matched and fixedly sleeved with rat incisor teeth, an individualized band matched and fixedly clamped with rat molar and nickel titanium tension springs. Two individualized bands are both provided with traction holes, two ends of the nickel titanium tension springs are respectively connected with one ends of two ligature wires, and the other ends of the ligature wires are fixedly connected to the individualized bands through the traction holes. The experiment method reduces shedding rate of the correcting device in the moving process of the orthodontic teeth and damage to tissue, enables correction force to be scientifically distributed on the teeth, facilitates directional traction of the teeth, and provides security for smooth performing of animal experiments.

The invention relates to the technical field of medical instruments, in particular to a ring sleeve ligature-taking-out type surgical instrument. The ring sleeve ligature-taking-out type surgical instrument comprises a needle rod, a needle core, a guide line and a ligature, the needle rod comprises a hollow rod body, one end of the rod body is a puncture end used for puncturing the abdominal wall, a threading hole is formed in the rod body, a ligature taking-out ring is arranged at one end of the guide line, the needle core is inserted into the needle rod, when passing through the threading hole, the needle core penetrates into the ligature taking-out ring to fix the guide line and the needle rod, the diameter of the ligature is smaller than the inner diameter of the needle rod, and the ligature can penetrate into the needle rod and penetrate out of the threading hole. The ring sleeve ligature-taking-out type surgical instrument is simple in structure, the needle rod and the needle core are both in hook-free design, it is guaranteed that the abdominal wall is not prone to being scratched in the operation process, and the abdominal wall only needs to be punctured once when the surgical instrument is used; and the ligature is taken out of the abdominal wall in a manner of sleeving the line with the ligature taking-out ring, the original operation manner of hooking a line with a hook is replaced, the operation is more convenient and reliable, and the tissue is prevented from being hooked.

The invention discloses a 3D printed micro-implanting nail guide plate and a design method thereof. The guide plate comprises a tooth surface retention plate, a gingiva retention plate, a micro-implanting nail implanting hole, and a handle guide pipeline. According to the design method, CBCT jaw bone data, a three-dimensional dentition model, and micro-implanting nail data obtained by microCT scanning are integrated together, so that the design method is more accurate than a method only using jaw bone data or micro-implanting nail data obtained without accurate scanning. According to the design method, an implantation site and an implantation direction of a micro-implanting nail are determined simultaneously, so that the implantation of the implanting nail is consistent with a design plan,the implantation accuracy is improved, and the safety during the implantation process is ensured to the maximum extent. The micro-implanting nail guide plate is divided into two, the problem that taking-out of the guide plate is relatively difficult after implanting the micro-implanting nail is solved, a metal ligature wire commonly used in the clinic is used for ligature and fixation, and thereby taking-out is relatively convenient. Finally, the design of the micro-implanting nail guide plate is simple and easy to implement, the micro-implanting nail guide plate can be popularized in the clinic, and the problem of touching the tooth root during the implantation process of the micro-implanting nail is avoided.