a push rod and a ring cutter connecting structure of the digestive tract anastomat, comprising a push rod and a ring cutter fixedly connected with the push rod, wherein the outer side of the annular knife is provided with a plurality of push nail pieces arranged in a circumferential direction, the One end of the annular knife is embedded on the push rod. Since one end of the annular knife is embedded on the push rod, the concentricity of the annular knife and the push rod is high, and the circular knife can sit satisfactorily during the cutting process. In the middle, the success rate of surgery is high.
The pushing device of the digestive tract stapler comprises a staple cartridge body 6 and a pusher blade body 1. The two ends of the first side wall 7 of the staple cartridge hole 5 respectively have a first guiding wall 9 and two of the second side wall 8 The first guiding wall 9 and the second guiding wall 10 at the same end respectively intersect and intersect at an arc, and the first guiding wall 9 and the second guiding wall 10 at the same end are symmetrically arranged; When there is a slight change in the geometrical dimensions of the staples, it can also be stably placed in the hole of the staple cartridge by the action of the guide wall, ensuring that the width of the pusher nail is larger than the width of the staple crown, so that the staples are well formed.
The connection structure of the puncture cone and the nail seat of the digestive tract anastomat comprises a nail base and a puncture cone, wherein the nail base is fixed with a circlip, and the puncture cone is inserted between the circlips, and the circlip clamp is clamped The puncture cone described. Relying on the spring force of the circlip, the nail seat can be reliably connected or separated from the puncture cone, and the utility model is safe to use and convenient to install.
A two-speed adjustment device for a digestive tract anastomat, comprising a stapler body, a knob body rotatably coupled to the stapler body, and a screw threadedly coupled to the knob body, the screw being inserted in the anastomosis In the inner cavity of the body, the front portion of the screw is coupled to a central rod in the body cavity of the stapler body, the screw having an associated first thread segment and a second thread segment, the first thread segment The pitch is greater than the pitch of the second thread segment. The distance between the staple cartridge and the abutment can be quickly pulled, and the second thread segment and the knob body slide relative to each other after being pulled, so that the moving speed of the screw is slowed when the knob is turned, which is beneficial to the operation of the digestive tract.
The adjustment knob of the digestive tract anastomat comprises a knob body, the knob body is rotatably connected with the stapler body, the knob body is screwedly connected with a screw; and the knob body is provided with a radially enlarged radial protrusion There are at least two radial projections. The radial protrusion makes the knob become a butterfly shape. When the finger is pushed by the radial protrusion, the torque can be directly obtained to make the knob rotate, and the human tissue can be easily compressed to a predetermined thickness, and the finger and the radial protrusion are raised. There is almost no friction between the parts, which effectively prevents the wearer from wearing latex gloves.
The staple of the digestive tract anastomat has a substantially U shape formed by a crown and a nail leg, the nail leg has a bent portion, an upper portion of the bent portion is an upper portion of the nail leg, and a lower portion of the bent portion is a nail leg In the lower part, the lower part of the nail leg is bent inward at the bent portion with respect to the upper part of the nail leg, and the length of the nail leg of the nail leg is 4.84 mm - 4.92 mm. The nail leg height of the staple can be formed normally, and the nail leg is bent at the bent portion after molding, which improves the probability of standard molding.
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