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Transurethral prostatic dilatation catheter and method thereof

A prostate and prostate apex technology, applied in the field of prostate dilation medical devices, can solve problems such as decreased effect, prostate tear, urethral injury, etc., achieve accurate and convenient positioning, ensure dilation effect, and prevent massive bleeding.

Pending Publication Date: 2019-04-19
江苏长寿棒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, there is a common phenomenon in the prostate expansion catheter that after the use of the prostate expansion catheter, a large amount of blood will be stained, and the patient after use is prone to thrombus; In the natural state, the size and tolerance are quite different, so it is easy to have too much prostate tear or insufficient prostate tear during operation, which not only reduces the effect of surgery, but also may cause damage due to excessive expansion of the non-prostatic urethra. Injury to urinary continence and urethra

Method used

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  • Transurethral prostatic dilatation catheter and method thereof
  • Transurethral prostatic dilatation catheter and method thereof
  • Transurethral prostatic dilatation catheter and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1 provides a kind of TPU material, and described TPU material is hyperbranched polyurethane material.

[0070] The hyperbranched polyurethane is a hyperbranched polyurethane terminated by a carboxylic acid group, which is prepared by reacting polymerized monomers 2, 3, and 4 with hyperbranched polyesters (HBPs) and then terminated by a carboxylic acid group;

[0071] The hyperbranched polyester (HBPs) is prepared by the following method: in a three-necked flask equipped with mechanical stirring, a thermometer and a spherical reflux condenser, add ethylene glycol, N, N'-bis(2-hydroxyethyl) Add piperazine and trimellitic anhydride, add DBTDL, under the protection of nitrogen, pre-polymerize at 40°C for 8h, then heat up to 100°C, vacuumize and react for 10h, until the acid value of the system is lower than 30mgKOH / g, and cool to obtain a colorless transparent solid, namely Hyperbranched polyesters (HBPs);

[0072] Wherein, the CAS number of the N,N'-bis(2-hydro...

Embodiment 2

[0093] Embodiment 2 provides a kind of TPU material, and described TPU material is hyperbranched polyurethane material.

[0094] The hyperbranched polyurethane is a hyperbranched polyurethane terminated by a carboxylic acid group, which is prepared by reacting polymerized monomers 2, 3, and 4 with hyperbranched polyesters (HBPs) and then terminated by a carboxylic acid group;

[0095] The preparation method of described hyperbranched polyester (HBPs) is with embodiment 1.

[0096] The preparation method of the polymerized monomer 2 is the same as in Example 1.

[0097] The preparation method of the polymerized monomer 3 is the same as in Example 1.

[0098] The preparation method of the polymerized monomer 4 is the same as in Example 1.

[0099] The preparation method of the hyperbranched polyurethane is the same as in Example 1, except that the molar ratio of the polymerized monomers 2, 3 and 4 to the hyperbranched polyesters (HBPs) is 1:1.5:1:1.

[0100] The preparation m...

Embodiment 3

[0105] Embodiment 3 provides a kind of TPU material, and described TPU material is hyperbranched polyurethane material.

[0106] The hyperbranched polyurethane is a hyperbranched polyurethane terminated by a carboxylic acid group, which is prepared by reacting polymerized monomers 2, 3, and 4 with hyperbranched polyesters (HBPs) and then terminated by a carboxylic acid group;

[0107] The preparation method of described hyperbranched polyester (HBPs) is with embodiment 1.

[0108] The preparation method of the polymerized monomer 2 is the same as in Example 1.

[0109] The preparation method of the polymerized monomer 3 is the same as in Example 1.

[0110] The preparation method of the polymerized monomer 4 is the same as in Example 1.

[0111] The preparation method of the hyperbranched polyurethane is the same as in Example 1, except that the molar ratio of the polymerized monomers 2, 3, and 4 to the hyperbranched polyester (HBPs) is 1.5:1.2:1.2:1.

[0112] The preparati...

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Abstract

The invention relates to the field of medical instruments for prostate dilatation surgery, in particular to a transurethral prostatic dilatation catheter and method thereof. A TPU material is a hyperbranched polyurethane material. Compared with catheters in the current market, the prostatic dilatation catheter has the advantages that positioning of the catheter is more accurate and convenient, thecatheter can be kept fixed after the prostate is dilated, the dilatation effect is ensured, the hemostasis effect based on compression is achieved, the compression of the external sphincter is relieved, and the external sphincter cannot be excessively damaged, so that urinary incontinence and massive hemorrhage are prevented. In addition, the catheter can effectively avoid the situation that blood coagulation is caused in surgery due to the addition of foreign materials and correspondingly results in danger of thrombus. Moreover, the size of a water bag in a freely expanded state is almost the same as that in a natural state, so that the pain of a patient is relieved in a surgery process.

Description

technical field [0001] The invention belongs to the field of medical equipment for dilatation of the prostate, and more specifically relates to a catheter for dilation of the prostate through the urethra and a method for dilation of the prostate. Background technique [0002] Prostatic hyperplasia is a common disease in middle-aged and elderly men. The so-called benign prostatic hyperplasia is mainly due to the hyperplasia of the prostate tissue, resulting in an increase in its volume, which in turn squeezes the surrounding organs, resulting in a smaller and narrower urinary tract, resulting in dysuria, frequent urination, Prolonged urination and other symptoms. The traditional treatment method is to cut the prostate tissue, but the operation is a big blow to the patient, and the elderly's physical and psychological tolerance to the operation is poor, so they are unwilling to accept the operation. At present, the more advanced treatment method is prostate expansion surgery....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/02A61B17/22
CPCA61M29/02A61B17/22A61B2017/22054
Inventor 沈坤
Owner 江苏长寿棒科技有限公司
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