56 results about "Endoscopic stapler" patented technology

A suturing device for an endoscope includes a curved needle rotatably attached on the distal end of the suturing device. A rotary member is provided on the rotation axis of the curved needle for rotating said curved needle and a connecting arm connects the curved needle to the rotary member. The center of curvature of the curved needle is aligned with the rotation axis of the curved needle and engaging means are provided at least at the pointed end of the curved needle for receiving thread.

An endoscopic stapler comprises a first jaw and a second jaw. The first jaw includes structure for retaining a plurality of staples. The first jaw and second jaw are mounted to permit pivotal movement of the first and second jaws relative to one another. The endoscopic stapler also comprises at least one clamp member for clamping tissue and pulling the tissue into a position between the first jaw and the second jaw to facilitate inserting at least one staple of the plurality of staples into the tissue. A first handle is operably coupled with the first jaw such that movement of the first handle effects delivery of the at least one staple of the plurality of staples to the tissue. A second handle is operably coupled with the second jaw and the at least one clamp member such that movement of the second handle effects movement of the second jaw and movement of the at least one clamp member.

An endoscopic suturing instrument is equipped with a needle mounted at the distal end of the suturing instrument for the purpose of living-tissue punctures. An engaging mechanism is provided at least at the distal end of the needle for the purpose of connecting the thread while allowing it to move freely, and the suturing instrument includes a needle-driving mechanism to drive the needle. A loop-creating mechanism is used to create a first loop in the thread, by loosening the thread connected to the engaging mechanism. A catching mechanism is provided at the distal end of the suturing instrument to be inserted through the first loop to catch the thread. The thread caught by the catching mechanism can be moved freely. The needle-driving mechanism and the catching mechanism are mechanically coupled.

The invention discloses a stapler control circuit. The circuit comprises a power supply, a firs discharge element, a power supply control switch, a conduction loop, and a control driving loop, the power supply control switch controls the power supply to be connected with a circuit power supply input port, and the power supply control switch controls the first discharge element to perform discharge on the power supply; the conduction loop is connected with the first discharge element in parallel; the control driving loop is connected with the conduction loop in parallel; the control driving circuit includes a direct current motor, a first relay, a second relay and a switching circuit, the switching circuit controls forward rotation, reverse rotation, forward rotation brake stop, reverse brake stop and rotation amount of the direct current motor; all control operations of an endoscopic stapler are completed by one motor; the work efficiency is high, the cost is relatively low, and the burden on patients is reduced; and the battery of the power supply runs out in a limited time, and the original problem of battery environmental pollution is solved .

The invention relates to a laparoscopic stapler, which includes an adapter, a nail cartridge assembly and a control system; the adapter includes: a main body shell; a rotating shell; an identification push rod; an identification adapter; There is a grating; when the staple cartridge assembly is installed on the adapter, the identification push rod is pushed to move, the identification push rod pushes the identification adapter to move, and the identification adapter pushes the identification to move; the staple cartridge assemblies with different suture lengths have different tail end lengths , and the staple cartridge components with different suturing lengths are installed on the adapter to push the recognition push rod to move at different distances; the photoelectric switch recognizes the grating on the recognition part, and provides the recognition signal to the control system, and the control system is based on the photoelectric switch. The signal determines the suture length of the staple cartridge assembly. The aforementioned laparoscopic stapler can identify the suturing length of the staple cartridge assembly. The medical staff can confirm whether the installed staple cartridge components are correct according to the identification result of the control system.

The invention provides a measuring device and method for triggering force and closing force of an endoscopic stapler. The measuring device for the triggering force and the closing force of the endoscopic stapler includes a bearing part, a clamping part, a triggering force measuring part, a closing force measuring part, a data processing and display part and an L-shaped plate. The measuring deviceand method for the triggering force and the closing force of the endoscopic stapler have the characteristics of simple structure and convenient operation, the endoscopic stapler can be clamped, and the triggering force and the closing force are automatically measured.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with chitosan gelatin as a carrier, which is characterized in that: the thickness of the coating on the titanium nail is 0.001-10 mm; Titanium nails are used for open and endoscopic anastomotic staplers, skin sutures, linear staplers, and clip applicators. The diameter of the titanium nails is 0.1-5.0. The titanium nails are made of TA1, TA2 and the metal nails are made of 316LVM stainless steel, self-reinforced poly-L A coating of lactide SR-PLLA12 nails and self-reinforced poly-L-polyglycolide SR-PGA nails, the chitosan gelatin titanium nails can perform chitosan for human implants, artificial organs, catheters Sugar gelatin coating treatment or coating treatment using chitosan gelatin as drug controlled release carrier, the method is simple and easy, the prepared chitosan gelatin coated titanium nail meets the clinical application requirements, chitosan gelatin coated titanium nail can It promotes tissue healing, has good stability, is not easy to wash off, is safe to use, is suitable for large-scale industrial production, and is simple to operate and low in cost.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with calcium alginate fiber as a carrier. Human implants, artificial organs and catheters can be coated with calcium alginate fibers or coated with calcium alginate fibers as drug-controlled release carriers. The titanium nails are used for open and laparoscopic anastomotic staplers , skin suture, linear stapler, clip applier, titanium nails with a diameter of 0.1-0.5, titanium nails made of TA1, TA2 and metal nails made of 316LVM stainless steel, self-reinforced poly-L-lactide SR-PLLAl2 nails and self-reinforced poly The coating of L-polyglycolide SR-PGA nails can effectively improve the use of surgical stomach, lung and other tissues and digestive tract surgical tissues, reduce the incidence of complications of patients, improve the survival rate and quality of life of patients, and the process is simple. The cost is low, the coating of the titanium nail is uniform, and the loading capacity of the drug and the controlled release carrier is also greatly increased.

The invention discloses an anastomat convenient to disinfect, for closing surgical incision. The anastomat comprises a firing mechanism and a nail transmitting mechanism connected to the firing mechanism, wherein the nail transmitting mechanism comprises a nail guiding groove, a strip guiding assembly, a nail ejecting plate and a pushing spring; the rear end of the strip guiding assembly is pivoted with the rear end of the nail guiding groove through a pivoted rod; the strip guiding assembly comprises two guiding strips, a rear fixing block and a front fixing block, the rear fixing block is arranged between the rear ends of the two guiding strips, the front fixing block is arranged between the front ends of the two guiding strips, the front fixing block and the front end of the nail guiding groove are in clamping and fixation, the rear fixing block and the front fixing block limit the spacing of the two guiding strips, the external spacing of the two guiding strips is equal to the internal spacing of two nail feet of an endoscopic stapler cartridge, the upper end surfaces of the guiding strips and the nail crown of the endoscopic stapler cartridge are in sliding cooperation, and the outside surfaces of the guiding strips and the upper segment of the endoscopic stapler cartridge are in sliding cooperation; and the nail ejecting plate and the guiding strips are in sliding cooperation, the pushing spring is arranged between the nail ejecting plate and the rear fixing block, and the anastomat is convenient to disinfect.

The invention discloses an endoscopic stapler. A surgical stapler is described herein which includes a shaft portion and a tool assembly supported on a distal end of the shaft portion. The tool assembly includes an anvil and a cartridge body which rotatably supports a plurality of staples within notches. At least one firing cam is provided to sequentially engage and rotate each of the staples to fire the staples from the cartridge body. Each of the staples includes first and second legs axially offset from each other and interconnected by an intermediate portion. At least one firing cam is provided to sequentially engage and rotate each of the staples to fire the staples from the cartridge body. The at least one firing cam may include axially offset cam members.

The invention discloses a zinc alloy endoscopic stapler cartridge and a preparation method thereof. The zinc alloy endoscopic stapler cartridge comprises a zinc alloy endoscopic stapler cartridge basebody and a composite film layer, wherein the surface of the zinc alloy endoscopic stapler cartridge base body is subjected to sand blasting treatment to form a frosted layer, the frosted layer is subjected to electrostatic spinning treatment, and the outer layer of the frosted layer is evenly covered with an electrostatic spinning film; and the frosted layer and the electrostatic spinning film form the composite film layer together. The zinc alloy endoscopic stapler cartridge base body and the composite film layer covering the surface of the zinc alloy endoscopic stapler cartridge base body are both made of biodegradable materials, so that the zinc alloy endoscopic stapler cartridge base body has excellent biocompatibility and safety, and the problem and the negative effect that a titanium alloy endoscopic stapler cartridge remains for a long time can be solved. Besides, zinc alloys are excellent in corrosion resistance in the human body environment, and the problem that the degradation rate of the magnesium endoscopic stapler cartridge is too high is solved.

The invention provides an anorectal operation assisting device which comprises a hollow body, a guide portion located at the far end of the hollow body and an external expansion portion located at the near end of the hollow body. The side wall of the hollow body is provided with at least one opening, the portion, opposite to the opening, of the side wall of the hollow body is provided with at least one suture traction hole, and the outer side wall near the suture traction hole is provided with a cover provided with an open port. Compared with traditional hemorrhoidectomy and procedure for prolapse and hemorrhoids, by means of the anorectal operation assisting device, purse-string suture is well and evenly carried out on non-circular hemorrhoids, lateral traction is complete, and accordingly operation space of an endoscopic stapler in the hollow body is enlarged, so that the non-circular hemorrhoids are conveniently and completely removed, pain of patients is greatly relieved, and the recurrence rate of affected parts is lowered.

The invention discloses an anastomat for closing surgical incision. The anastomat comprises a firing mechanism and an endoscopic stapler cartridge transmitting mechanism connected to the firing mechanism, wherein the endoscopic stapler cartridge transmitting mechanism comprises an endoscopic stapler cartridge guiding groove, a strip guiding part and an endoscopic stapler cartridge ejecting plate;an operation part for controlling opening and closing is arranged at the rear end of the strip guiding part; a pair of bearing lugs, which faces the corresponding directions of the endoscopic staplercartridge guiding groove and the operation part, is arranged at the endoscopic stapler cartridge guiding groove and the operation part in a bulging manner; the bearing lugs and a pin shaft are used for combining the endoscopic stapler cartridge guiding groove and the strip guiding part, a spiral spring is packed and penetrates through the pin shaft on the bearing lug, and the spiral spring is usedfor enabling the strip guiding part to be biased towards the direction that the strip guiding part and the endoscopic stapler cartridge guiding groove are in normalcy mutual closing; a chute part which is bulged towards the direction of the endoscopic stapler cartridge guiding groove is arranged at the middle of the strip guiding part, the width of the chute part is equal to the internal spacingof two endoscopic stapler cartridge feet of an endoscopic stapler cartridge, the upper surface of the chute part and the endoscopic stapler cartridge crown of the endoscopic stapler cartridge are in sliding cooperation, the outside surface of the chute part and the upper segment of the endoscopic stapler cartridge are in sliding cooperation, the endoscopic stapler cartridge ejecting plate and thechute part are in sliding cooperation, and the endoscopic stapler cartridge is easy to disinfect.