Anastomosis device based on temperature-controlled self-forming magnetic composite for minimally invasive anastomosis
A technology of magnetic composite materials and permanent magnet materials, applied in the field of medical materials
Active Publication Date: 2020-04-28
崇好科技有限公司
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Problems solved by technology
Although this design can greatly reduce the space required for magnet placement, it still fails to maximize the concept of minimally invasive surgery
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[0026] The following describes the implementation of the present invention in detail with reference to the drawings and embodiments.
[0027] The present invention is a temperature-controlled self-setting magnetic composite material for minimally invasive anastomosis. Its preparation process and application include the following steps:
[0028] Step 1. Add the sodium alginate powder treated by the ethylene oxide sterilization method to sterile deionized water in a water bath environment of 30-85°C to fully dissolve it to form a sodium alginate solution with a mass concentration of 0.1-5%;
[0029] Step 2. Mix the sterilized gelatin particles and the obtained sodium alginate solution in a ratio of (0.005-2) g: (0.2-1) mL;
[0030] Step 3: Add 1-20 g of the sterilized permanent magnetic particulate material to the above solution, stir and mix thoroughly.
[0031] Using the magnetic composite material, minimally invasive anastomosis can be achieved. An injection device is used to extract a...
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The invention discloses a temperature control self-shaping type magnetic composite material used for minimally invasive anastomosis. The temperature control self-shaping type magnetic composite material is prepared from permanent magnet material particles, a sodium alga acid solution and gelatin particles in proportion mainly. The invention also provides a corresponding anastomotic system. The magnetic composite material is injected into a hollow organ on the side waiting for anastomosi in virtue of a puncturing pipeline by using an injection device, a magnetic body is anchored for being maintained in a hollow organ on the other side, under the effect of a magnetic field, the magnetic composite material is formed in a certain shape, and along with the change of temperature difference, theformed shape is gradually cured, so that a solid magnetic body is formed. The temperature sensibility flowing magnetic composite material is prepared, the material is injected into the hollow organ onthe side waiting for anastomosi in virtue of puncturing injection, the flowing magnetic composite material is attracted with the anchoring magnetic body maintained inside the hollow organ on the other side waiting for anastomosi in advance and the certain shape is automatically formed, and simultaneously, the magnetic composite material changing along with external temperature can be cured to form the magnetic body in the certain shape, so that magnetic squeezing anastomosis is completed, and minimal invasiveness that the magnetic material is embedded in one side is realized.
Description
Technical field [0001] The invention belongs to the technical field of medical materials, and particularly relates to a temperature-controlled self-setting magnetic composite material for minimally invasive anastomosis, its preparation and an anastomosis system. Background technique [0002] Magnetic pressing anastomosis technology can realize the reconstruction of anastomosis between cavities and organs by virtue of the magnetic attraction between two or more magnets, and has many advantages such as simple operation, short anastomosis time, and reliable anastomosis. At present, most magnets used for magnetic pressing and anastomosis are machined into various fixed shapes such as circular ring, cylindrical shape, elliptical ring shape, and strip shape. Because the magnet has been shaped, a larger cavity is required to allow the magnet to pass through during the insertion process. To overcome this shortcoming, some people invented deformable magnetic devices such as "intermittent ...
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IPC IPC(8): H01F1/44H01F41/00A61L17/10A61L17/04A61B17/11
CPCA61B17/11A61B2017/00876A61L17/04A61L17/10A61L2400/06H01F1/44H01F41/00C08L5/04C08L89/00
Inventor 严小鹏吕毅赵广宾史爱华马锋乔伟
Owner 崇好科技有限公司