Excised tissue extractor

Abstract

The invention discloses an excised tissue extractor. The extractor comprises an outer pipe and an inner pipe which can move along the inner wall of the outer pipe back and forth, wherein the distal end of the inner pipe is positioned in the cavity of the outer pipe; a supporting rack is arranged in the cavity of the distal end of the outer pipe in a contracted manner, is made of a shape memory material and is provided with an open loop; a material bag sleeves on the supporting rack; the opening of the supporting rack extends outward to form two free end parts; the free end parts are fixedly connected with the distal end of the inner pipe; and the material bag at the opening is connected with the proximal end of the outer pipe by virtue of a wire, and the wire is in a bent state; when the inner pipe is pushed for the first time to enable the supporting rack and the material bag to move out of the outer pipe and the wire is in a stressed sate, the supporting rack and the material bag are completely opened; when the inner pipe is pulled back to contract partial supporting rack to the cavity of the distal end of the outer pipe, the opening of the material bag is closed accordingly and is positioned at the same side of the outer pipe as the other part of the supporting rack, and the wire is released from the stressed state; and when the inner pipe is pushed again to cause the wire to reach a stressed state, the supporting rack and the material bag are completely opened, so that repeated opening and closing of the material bag can be realized.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a resected tissue taker used for taking out resected diseased tissue out of the body in laparoscopic surgery. Background technique [0002] In laparoscopic surgery, a resected tissue extractor is usually used to remove the lesion tissue resected from the living body from the operating space. A commonly used extractor includes a cylindrical long tube, a material bag 4, a support frame 3, an inner tube and a handle, and the outside of the support frame 3 is wrapped around the mouth of the material bag 4. tube, and the 4 pockets of the material bag are closed by the limit of the cylindrical long tube mouth; but after the 4 pockets of the material bag are closed, due to the friction between the 4 pockets of the material bag and the support frame 3, they are pushed forward again When the handle is used, the closed material bag 4 sacks move together with the support frame 3, such as figure 1 ...

AI Technical Summary

Problems solved by technology

A commonly used extractor includes a cylindrical long tube, a material bag 4, a support frame 3, an inner tube and a handle, and the outside of the support frame 3 is wrapped around the mouth of the material bag 4. tube, and the 4 pockets of the material bag are closed by the limit of the cylindrical long tube mouth; but after the 4 pockets of the material bag are closed, due to the friction between the 4 pockets of the material bag and the support frame 3, they are pushed forward again When the handle is used, the closed material bag 4 sacks move together with the support frame 3, such as figure 1 , so that the 4 pockets of the material bag cannot be opened again; therefore, the material bag of the current fetcher can only be opened and closed once

[0003] However, it is often necessary to remove multiple tissues during the operation. In order to avoid problems such as complex operation, prolonged operation time, increased operation cost, and reduced safety caused by the continuous replacement of the extractor during the operation, the first removed tissue during the operation needs to be removed. Place it in the patient's body cavity and wait until all diseased tissues are removed before being put into the extractor and taken out of the operating space by the extractor; this process is likely to cause the implantation and transfer of diseased cells, which will seriously affect the patient's health

Moreover, the mouth of the material bag of the current extractor cannot be precisely adjusted in size, and cannot be adapted to the actual size of the tissue removed during the operation, which causes inconvenience to the operator to take out the diseased tissue

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