Tearable sheathing canal

Abstract

The invention discloses a tearable sheathing canal, which comprises a round pipe, wherein the round pipe comprises two semi-cylindrical pipes symmetrical along the axis of the round pipe; the two semi-cylindrical pipes are matched by a heat sealing line; one opening end of the round pipe is sealed with an elastic membrane; the elastic membrane is provided with a through hole; and the round pipe is made of plastic. The tearable sheathing canal has the following beneficial effects that the sealing elastic membrane on the tail end of the sheathing canal can be used for effectively preventing air from entering a venous system because of negative pressure to cause complications such as pulmonary embolism when a patient inhales in the process that the tearable sheathing canal is sent into the venous system of the human body along a puncturing guide wire; when the tearable sheathing canal is sent into the venous system of the human body, possible air bubbles or thrombus in the sheathing canal can be sucked by a side pipe on the tail end of the sheathing canal, and anticoagulation heparin saline is injected; and when the a pace-making electrode conduit is conveyed to the venous system by the sheathing canal, the sealing elastic membrane on the tail end of the sheathing canal can be used for effectively preventing the air from entering the venous system to cause air embolism along with the electrode conduit.

Description

technical field [0001] The invention relates to a tearable sheath tube, which belongs to instruments for interventional operations. Background technique [0002] Clinically, during the surgical operation of placing a permanent pacemaker lead, it is necessary to first send the sheath along the guide wire into the patient's venous blood vessel to establish an operation channel, and then send the electrode catheter into the cardiac cavity along the sheath. In order to reduce damage to the vessel wall and reduce blood loss, a relatively small sheath is usually selected during the operation, and the inner diameter is subject to the ability to accommodate the smooth passage of the electrode catheter. Therefore, for eventual removal of the sheath from the lead end, which is slightly thicker than the lead, a tearable sheath must be used. [0003] The tearable sheath widely used clinically is improved from the traditional venous sheath. Its main disadvantages are: 1. The tail end of...

AI Technical Summary

Problems solved by technology

[0003] The tearable sheath widely used clinically is improved from the traditional venous sheath. Its main disadvantages are: 1. The tail end of the sheath does not have a sealing film. When the sheath tube is fed into the pacing electrode lead, it is easy to inhale air from the sheath tube due to the negative pressure in the vein when the patient inhales, causing venous gas embolism

2. Since there is no side tube and three-way switch at the end of the sheath tube, after the sheath tube is injected into the vein, the possible air bubbles or thrombus in the sheath tube cannot be sucked, and anticoagulant preparations such as heparin saline cannot be injected into the sheath tube

4. Since the sheath must be withdrawn and torn off before the lead is properly positioned, the sheath cannot be retained for lead positioning, nor can the lead be replaced through the sheath

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