Sealing sleeve and puncture device provided with same

Abstract

The invention discloses a sealing sleeve and a puncture device provided with the sealing sleeve. The sealing sleeve comprises a sealing body and a mounting convex edge, wherein the sealing body comprises a sealing cylinder body and a plurality of sealing flaps, the upper ends of the plurality of sealing flaps are connected with the edge of an opening at the lower end of the sealing cylinder body, the edges of the lower ends of the plurality of sealing flaps are in butting connection or separated, so that the opening at the lower end of the sealing barrel body is selectively opened or closed, and the mounting convex edge is close to an opening at the upper end of the sealing cylinder body; a bulge is arranged on any sealing flap, the bulge extends from the upper end of the sealing flap to the lower end of the sealing flap, and the thickness of the part, close to the lower end of the sealing flap, of the bulge is greater than the thickness of the part, close to the upper end of the sealing flap, of the bulge. According to the sealing sleeve and the puncture device provided with the sealing sleeve, the bulge on the sealing flap is thickened, so that the bulge can provide enough restoring acting force, and thus the closing of the sealing flap is facilitated. In addition, an oil storage tank is formed, thus the friction force between a puncture mandrel and the like and the sealing flap is reduced, and further, the sealing flap is prevented from being driven to be overturned.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a sealing sleeve and a trocar with the sealing sleeve. Background technique [0002] In abdominal examination, abdominal surgery and other minimally invasive or surgical operations, trocar is an indispensable surgical instrument. The trocar can establish an access channel in the abdominal wall of the human body so that staplers or other surgical instruments (such as endoscopes, scissors, guide wires, catheters, filters, stents, etc.) To control the pneumoperitoneum required for surgery for examination or surgical manipulation. The piercer includes a piercing mandrel and a piercing sheath forming the access channel. The puncture sleeve is provided with a sealing assembly, which can prevent air leakage when surgical instruments enter the patient's abdominal cavity and inflate the patient's abdominal cavity. The sealing assembly includes a sealing sleeve and a sealing ...

AI Technical Summary

Problems solved by technology

[0005] However, since the protruding structure 12' cannot provide sufficient restoring force, the sealing performance of the sealing sleeve 1' having the above-mentioned structure is relatively poor.

In addition, when the puncture mandrel, stapler or other surgical instruments are pulled out from the channel established by the puncture device, the sealing element 11' of the sealing sleeve 1' is easily driven by the puncture mandrel, stapler or other surgical instruments to turn up, As a result, the abdominal cavity of the human body is connected with the external environment, and the sealing performance of the sealing sleeve 1' is destroyed.

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