Stapler is the first stapler in the world, which has been used for gastrointestinal anastomosis for nearly a century. Until 1978, tubular stapler was widely used in gastrointestinal surgery. It is generally divided into disposable or multi-use staplers, imported or domestic staplers. It is a device used in medicine to replace the traditional manual suture. Due to the development of modern science and technology and the improvement of manufacturing technology, the stapler used in clinical practice has the advantages of reliable quality, convenient use, tightness and appropriate tightness. In particular, it has the advantages of fast suture, simple operation and few side effects and surgical complications. It also enables the focus resection of unresectable tumor surgery in the past.
Introduction to stapler
Stapler is a device used in medicine to replace manual suture. Its main working principle is to use titanium nails to disconnect or anastomose tissues, similar to stapler. According to the different scope of application, it can be divided into skin stapler, digestive tract (esophagus, gastrointestinal, etc.) circular stapler, rectal stapler, circular hemorrhoid stapler, circumcision stapler, vascular stapler, hernia stapler, lung cutting stapler, etc.
Compared with traditional manual suture, instrument suture has the following advantages:
The operation is simple and convenient, saving operation time.
Single use, avoid cross infection.
Use titanium nails or stainless steel nails (skin stapler) to sew tightly and with moderate tightness.
It has few side effects and effectively reduces surgical complications.
The skin stapler has the following remarkable characteristics: simple operation and fast suture; Shorten the operation time and improve the turnover rate of the operating room; The scar is small and the wound is beautiful; Special sewing nail, suitable for tension wound, good histocompatibility, wireless head reaction; There is no adhesion with blood scab, and the pain of dressing change and nail removal is small; No nail sticking and jumping, stable performance.
Features of prepuce cutting stapler: simple operation and short operation time; Less bleeding and less pain; Postoperative edema was mild; The staples fell off automatically after operation, and there was no need to return to the hospital to remove the stitches and rings; The surgical incision is regular and beautiful after healing.
Features of purse string stapler: disposable to avoid cross infection; With built-in purse wire and titanium nail, the purse is automatically shaped without threading, which is faster and more convenient The operation is simple and the operation time is shortened.
Features of disposable linear stapler: the stapling method is simple and convenient, and the operation time is shortened; Three rows of suture nails are arranged compactly to prevent bleeding; Imported titanium wire is used to provide better strength and tensile strength; The integrated positioning needle can be operated manually or automatically, which is convenient to adjust the anastomotic tissue.
Structural characteristics of stapler
The stapler includes a shell, a central rod and a push tube. The central rod is set in the push tube. The front end of the central rod is equipped with a nail cover, and the rear end is connected with the adjusting knob at the end of the shell through a screw. The external surface of the shell is equipped with an excitation handle, which is movably connected with the shell through a hinge. Its feature is that: the stapler is equipped with a connecting rod mechanism, and the three connecting rods are respectively connected with the excitation handle, the inner wall of the shell and the push tube, And one end of the three connecting rods is connected to the same movable hinge; The three connecting rods of the linkage mechanism include a power rod, a support rod and a motion rod; The power rod is hinged with the excitation handle; The support rod and the shell are connected by a movable hinge; The moving rod is connected with the push tube by a movable hinge. The stapler of the utility model has the advantages of simple structure, convenient operation and strong stability.
The connecting structure between the push rod and the annular knife of the digestive tract stapler includes a push rod and an annular knife fixedly connected with the push rod. A plurality of nail pushing pieces arranged along the circumference are arranged on the outside of the annular knife. One end of the annular knife is embedded on the push rod. Because one end of the annular knife is embedded on the push rod, the concentricity of the annular knife and the push rod is high. In the process of cutting tissue, the annular knife can sit in the middle smoothly, The success rate of operation is high.
The nail pushing device of the digestive tract stapler includes a nail bin body 6 and a nail pushing sheet body 1. The two ends of the first side wall 7 of the nail bin hole 5 are respectively provided with a first guide wall 9, and the two ends of the second side wall 8 are respectively provided with a second guide wall 10. The first guide wall 9 and the second guide wall 10 at the same end intersect and arc transition at the intersection. The first guide wall 9 and the second guide wall 10 at the same end are arranged relatively symmetrically; When there is a small change in the geometric size of the staple, it can also be stably located in the staple bin hole by the function of the guide wall, so as to ensure that the width of the push pin is greater than the width of the crown of the staple, so that the staple is well formed.
The connecting structure between the puncture cone and the nail base of the digestive tract stapler includes a nail base and a puncture cone. The nail base is fixed with a snap spring, the puncture cone is inserted between the snap springs, and the snap spring clamps the puncture cone. Relying on the spring clamping force of the snap spring, the nail seat can be reliably connected or separated from the puncture cone, which is safe to use and convenient to install.
Post time: Jul-04-2022
