A fastened micro-nail magnetic pressing anastomosis ring

Abstract

A fastening type micro-nail magnetic compression anastomotic ring, including a bolt ring and an upper ring connected to the bolt ring containing a round knife, the inner side or outer side of the ring of the bolt ring is integrally formed with more than two fixing nuts, And the bolts that are connected with the fixing nuts for fastening the upper ring containing the round knife firmly on the bolt ring, the upper ring and the bolt magnetic ring are both oval or circular ring structures . The invention guarantees the quality of healing through bolt fastening, the anastomotic window is larger, and the safety of clinical use is improved; it avoids possible penetration and tearing of the anastomotic stoma and hemorrhoid tissue, causing risks such as bleeding and tearing of the anastomotic stoma; it is easy to fit; round The knife is hidden in the inner edge of the magnetic ring on one side, which is beneficial to avoid damage to the surrounding tissue; non-penetrating anastomosis, no foreign matter remains; the invention can minimize the shielding of the magnetic field, and has no obvious influence on the magnetic force.

Description

technical field [0001] The invention relates to a magnetic pressing anastomotic ring. In particular, it relates to a fastening micro-nail magnetic pressing anastomotic ring with fastening bolts and hidden safety circular knives. Background technique [0002] The incidence rate of hemorrhoids in my country is relatively high, and with age, the incidence rate also gradually increases. With the aging of our society, this problem will become more and more prominent. At present, internal hemorrhoids with degree III-IV prolapse are mainly treated with surgery. In the past, external dissection and internal ligation were the main methods. In 1998, Italian scholar Longo first proposed the procedure for prolapse and hemorrhoids using a titanium nail circular stapler. , PPH). PPH resects the loose lower rectal mucosa and submucosal tissue with a stapler, and anastomoses the distal and proximal mucosa at the same time. The anal cushion is lifted and resuspended at the lower rectum, r...

AI Technical Summary

Problems solved by technology

[0007] However, due to the obvious defects of the magnetic anastomosis devices mentioned in previous literature or patents for hemorrhoid anastomosis, most of the magnetic anastomosis devices are two simple magnetic rings, which are difficult to meet the requirements of clinical safety, precision and reliability, and are far from clinical application. Need to solve the following problems:

[0009] 2) The characteristic of the magnetic ring itself is that as the thickness of the tissue increases, the magnetic force rapidly attenuates, and inflammation and edema often exist near hemorrhoids, and the varicose veins lead to thicker tissue, which significantly weakens the magnetic attraction, and easily leads to the anastomotic disengagement

[0010] 3) The material of the magnetic ring itself is mostly NdFeB or other rare earth materials, which are easy to disintegrate, difficult to precision process, and easy to be corroded by the internal environment of the human body.

[0011] 4) If a thicker ordinary metal shell is added, it will easily cause local magnetic shielding and seriously affect the magnetic force of the magnetic ring

[0012] 5) In addition, other magnetic rings lack fastening devices, and are easy to disengage when the tissue is thick or edema, which seriously affects the safety of clinical use

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