Intestinal anastomosis ring

A technology for anastomotic rings and intestines, applied in the field of medical devices, can solve problems that need to be further improved, and achieve good mechanical properties, good burst resistance, and low prices

Pending Publication Date: 2017-02-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance and mechanical properties of the existing magnesium alloy materials as intestinal anastomotic rings need to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An embodiment of the intestinal anastomotic ring of the present invention, the material of the intestinal anastomotic ring is a biodegradable Mg-Zn-Sr alloy; the mass fraction of Zn in the Mg-Zn-Sr alloy is 4%, and the mass fraction of Sr The fraction is 0.1%, and the balance is Mg. The Mg-Zn-Sr alloy is composed of magnesium ingots with a purity of ≥99.9%, zinc ingots with a purity of ≥99.9%, and a Mg-25wt%Sr master alloy in CO 2 and SF 6 In a protective atmosphere (magnesium is easily oxidized and flammable at high temperature, it needs to be smelted in a protective atmosphere), and obtained by melting at 750°C-800°C. The intestinal anastomotic ring is obtained by forging and pressing the above-mentioned Mg-Zn-Sr alloy.

[0042] In vitro corrosion resistance test:

[0043] The artificial simulated body fluid (SBF) was used to soak the specimen for in vitro corrosion test. The artificial simulated body fluid was first prepared, and NaCl and NaHCO were added to the e...

Embodiment 2

[0057] An embodiment of the intestinal anastomotic ring of the present invention, the material of the intestinal anastomotic ring is a biodegradable Mg-Zn-Sr alloy; the mass fraction of Zn in the Mg-Zn-Sr alloy is 4%, and the mass fraction of Sr The fraction is 0.4%, and the balance is Mg. The Mg-Zn-Sr alloy is composed of magnesium ingots with a purity of ≥99.9%, zinc ingots with a purity of ≥99.9%, and a Mg-25wt%Sr master alloy in CO 2 and SF 6 It is obtained by melting at 750°C-800°C in a protective atmosphere. The intestinal anastomotic ring is obtained by forging and pressing the above-mentioned Mg-Zn-Sr alloy. The in vitro corrosion resistance test was carried out by the same method as in Example 1. The specific test results of the immersion weight loss method are shown in Table 2, and the specific test results of the electrochemical corrosion test are shown in Table 3.

Embodiment 3

[0070] Such as Figure 1 to Figure 5 As shown, an embodiment of the intestinal anastomotic ring of the present invention, the material of the intestinal anastomotic ring is the Mg-Zn-Sr alloy in the above-mentioned embodiment 1 or embodiment 2, and the intestinal anastomotic ring mainly includes mutually anastomotic First half ring 1 and second half ring 2. When in use, the two sections of intestinal tract to be anastomosed are respectively sleeved on the first half ring 1 and the second half ring 2, and then the first half ring 1 and the second half ring 2 are sleeved and anastomosed to connect the two sections of intestinal tract Docking is carried out so that the tissues of the two intestinal tracts are tightly adhered. The inner circle of the first half-ring 1 and the second half-ring 2 is an intestinal channel 3, and the material in the intestinal tract can be kept unobstructed through the intestinal channel 3 after the first half-ring 1 and the second half-ring 2 are an...

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Abstract

The invention discloses an intestinal anastomosis ring. The intestinal anastomosis ring comprises a first half ring (1) and a second half ring (2) which are mutually anastomotic. The inner ring of each of the first half ring (1) and the second half ring (2) is an intestinal channel (3). One end of the first half ring (1) is provided with an elastic guide sleeve (4). The end of the elastic guide sleeve (4) is provided with a reverse lock head (5) with the thickness being larger than the thickness of the body part of the elastic guide sleeve (4). One end of the second half ring (2) is provided with an axial anastomosis ring groove (6) matched with the elastic guide sleeve (4). A reverse lock groove (7) matched with the reverse lock head (5) is formed in the bottom of the axial anastomosis ring groove (6). The first half ring (1) and the second half ring (2) are connected with each other in a clamped manner through the reverse lock head (5) and the reverse lock groove (7) so as to form the intestinal anastomosis ring. The intestinal anastomosis ring is simple to operate, stable and reliable in connection and few in used materials.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an intestinal anastomotic ring. Background technique [0002] Intestinal anastomosis is a common procedure in abdominal surgery, and even several intestinal anastomoses need to be performed in one operation, and the demand for anastomotic instruments is large. And as people's requirements for health increase, the requirements for medical devices will further increase. [0003] At present, the intestinal anastomosis technology used in the world is mainly divided into the following four types: manual silk suture, stapler, linear cutting closer and wireless anastomosis technology. Manual silk anastomosis has many disadvantages. Not only is the operation complicated and time-consuming, but also the quality of anastomosis is difficult to reach the level of staplers. Therefore, the incidence of complications such as anastomotic leakage, bleeding, stenosis, and anas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/115A61L31/02A61L31/14
CPCA61L31/022A61L31/148A61B17/1114A61B17/1155A61B2017/00889A61B2017/00831A61B2017/1132
Inventor 李年丰刘凌李嘉荣吴宏刘咏雷霆李楷模
Owner CENT SOUTH UNIV
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