A kind of medical fallopian tube stent device

A stent device and fallopian tube technology, which is applied in the field of medical devices, can solve the problems of difficulty in effectively dredging the blocked section of fallopian tubes, large diameter of fallopian tube mirror, and insufficient hardness of fiberscope body, etc., to fill the gap in the market, non-cytotoxic, and effective high effect

Active Publication Date: 2020-04-24
北京百利康生化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fallopian tube used to treat fallopian tube diseases has the following disadvantages: the fiberscope body is not rigid enough, and it is difficult to insert; it is difficult to effectively dredge the blocked section of the fallopian tube; the existing fallopian tube has a large diameter and does not have a perfusion function
This kind of recanalization has the disadvantage of forming a new wound while separating the blockage, and the peristalsis and contraction of the fallopian tube itself can easily cause recurrent blockage of the fallopian tube

Method used

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  • A kind of medical fallopian tube stent device
  • A kind of medical fallopian tube stent device
  • A kind of medical fallopian tube stent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the bracket in the medical tubal stent device provided by the present invention is described in detail below

[0036] 1, preparation weight percent is the acetic acid solution of the chitosan of 20wt%:

[0037] Select chitosan with a viscosity of 0.1 Pa·s and a degree of deacetylation of 95%, dissolve it in 25 wt% acetic acid solution, and prepare an acetic acid solution of chitosan with a weight percentage of 20 wt%.

[0038] 2. Degassing injection molding:

[0039] Select 100 kg of acetic acid solution of chitosan and 10 kg of glycerin; mix for 48 hours at 100° C., let stand for 24 hours to cool down and defoam, and inject into the mould.

[0040] 3. Prepare the scaffold:

[0041] 95% ethanol and 10wt% sodium hydroxide were made into a coagulation solution at a volume ratio of 1000:15, and then the mold was put into the coagulation solution to solidify to obtain a gel, which was then dried in an oven at 50°C to obtain a finished stent.

[...

Embodiment 2

[0044] The preparation method of the bracket in the fallopian tube stent device provided by the present invention will be described in detail below

[0045] 1, preparation weight percent is the modified chitosan liquid of 20wt%:

[0046] Select chitosan with a viscosity of 0.3 Pa·s and a degree of deacetylation of 90%, dissolve it in 15 wt% acetic acid solution, and prepare an acetic acid solution of chitosan with a weight percentage of 20 wt%.

[0047] 2. Degassing injection molding:

[0048] Select 100 kg of acetic acid solution of chitosan and 20 kg of glycerin; mix for 48 hours at 150°C, let stand for 24 hours to cool down and defoam, and inject into the mold.

[0049] 3. Prepare the scaffold:

[0050] 95% ethanol and 15wt% sodium hydroxide were made into a coagulation solution at a volume ratio of 1000:15, and then the mold was put into the coagulation solution to solidify to obtain a gel, which was dried in an oven at 70°C to obtain a finished stent.

[0051] Bracket ...

Embodiment 3

[0053] The delivery system of a medical fallopian tube stent device provided by the present invention includes a catheter and a guide wire. When in use, with the cooperation of hystero-laparoscopic, place the stent in the following order:

[0054] Push the catheter with the pre-installed stent to the place where the fallopian tube blockage is decomposed;

[0055] Using a guide wire to slowly push the stent out from the tapered outlet end of the catheter, so that the stent reaches the decomposition point of the fallopian tube obstruction;

[0056] The guide wire and catheter are withdrawn, leaving the stent where the tubal blockage breaks down.

[0057] The stent remaining at the blockage decomposition part slowly dissolves, so that the wound surface of the fallopian tube blockage can be recovered to the greatest extent.

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Abstract

The invention discloses a medical oviduct stent device, which comprises a stent and an accessory, wherein the accessory comprises a guide tube and a guide wire; the tail end of the guide tube is provided with a stent prepared from chitosan and glycerol. A preparation method of the stent comprises the following steps of preparing 20 weight percent of chitosan acetic acid solution by an acetic acidsolution with the concentration being 10 to 30 weight percent; after the glycerol adding, performing mixing and filtering; performing still standing for 24 hours for defoaming; injecting the materialsinto a mod; putting the materials into a baking oven being 40 to 70 DEG C; performing drying, to obtain the stent. The guide tube has the length being 40 to 45 cm, the outer diameter being 1.5 to 3 mm, and the inner diameter being about 0.5 to 2 mm; the tail end 1 to 3 cm is in a cone shape; the guide wire has the length of 45 to 50 cm, and the diameter is 0.6 to 0.8 mm. By using the technical scheme provided by the invention, the preparation process is simple; the forms are various; convenience and practicability are realized; the stent has the characteristics that good biocompatibility andabsorbable degradation performance are realized; the device is favorable for wound surface restoration; the operation is simple and convenient, and the like. The oviduct recurrent obstruction is avoided; the postoperative intrauterine pregnancy rate is improved.

Description

technical field [0001] The invention relates to a medical instrument, in particular to a medical fallopian tube stent device. Background technique [0002] The fallopian tubes in the pelvic cavity are generally about 8 to 15 cm long, and the left and right two are located on both sides of the uterus. Each fallopian tube has two openings, the inner opening is in the uterine cavity of the uterine horn, called the fallopian tube-uterine ostium, and the outer opening is in the abdominal cavity, called the fallopian tube-abdominal opening. The left fallopian tube is adjacent to the small intestine and sigmoid colon. The right fallopian tube is adjacent to the small intestine and appendix. The activity of the fallopian tube is relatively large, not only can it move with the change of the position of the uterus, but also can change its position due to peristalsis and contraction. [0003] The patency of the fallopian tube is one of the essential conditions for conception. The lu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L31/14A61L31/04
CPCA61L31/042A61L31/14A61L31/148C08L5/08
Inventor 不公告发明人
Owner 北京百利康生化有限公司
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