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Preparation technology for novel saccule urethral catheter and novel saccule urethral catheter obtained by adopting same technology

A catheter and balloon technology, applied in the field of new balloon catheters, can solve problems such as difficult insertion, damage to human mucous membrane, and user discomfort

Inactive Publication Date: 2015-07-22
GUANGZHOU WELLLEAD MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing balloon catheter made of rubber material has good tensile strength, and the tube body is soft and elastic, and is widely used clinically. However, because the balloon needs to be placed on the inner tube, the catheter structure produced Due to the problems of the manufacturing process, there are also considerable defects, such as: (1) the balloon is placed on the inner tube, and then the outer tube is impregnated, which will cause an obvious step at the connection between the balloon and the tube
When inserted into the human body in clinical use, this step will cause discomfort to the user or damage the human mucous membrane; (2) In order to ensure that the balloon does not adhere to the inner tube, the diameter of the balloon is generally made smaller than the diameter of the inner tube. Large, so that the outer diameter of the manufactured catheter balloon will be larger than the outer diameter of the tube body
When inserted into the human body in clinical use, it will cause difficulty in insertion and cause discomfort to the user or damage the human mucous membrane

Method used

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  • Preparation technology for novel saccule urethral catheter and novel saccule urethral catheter obtained by adopting same technology
  • Preparation technology for novel saccule urethral catheter and novel saccule urethral catheter obtained by adopting same technology
  • Preparation technology for novel saccule urethral catheter and novel saccule urethral catheter obtained by adopting same technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as Figure 2 to Figure 7 As shown, a novel balloon catheter includes a tube body 1, and the tube body 1 includes an inner layer tube 11 and an elastic outer layer 13, and between the inner layer tube 11 and the outer layer 13 is also There is a medium layer 14 for connecting the inner layer tube 11 and the outer layer 13, a balloon filling cavity 17 is opened in the tube wall of the inner layer tube 11, and a row is arranged at the distal end of the tube body 1. The liquid hole 18, the liquid discharge hole 18 communicates with the hollow part 19 of the tube body 1, and also includes an isolation layer 15 arranged at the far end of the tube body 1 to reduce the water adhesion, more specifically, the isolation layer 15 It is preferably composed of a substance capable of dissolving or swelling or dispersing in water. The isolation layer 15 is disposed between the medium layer 14 and the outer layer 13 or the isolation layer 15 is disposed between the inner tube 11 a...

Embodiment 2

[0072] A preparation process for a novel balloon catheter, comprising the steps of:

[0073] Step 1: Prepare the inner layer tube: use a dipping machine to form the inner layer tube by multiple dipping methods, and the thickness of the inner layer tube is 0.3-1.0 mm. The dipping operation is to dip the mold in a natural rubber solution with a total solid content of 50% and a viscosity of 600mPa.S for 20s to 50s. Dipping for 20s to 50s to obtain an inner tube.

[0074] Step 2: Cover the outer layer of the inner tube with a medium layer by dipping. The dipping operation is: dip the inner tube in a medium solution with a solid content of 1% to 30% for 2s, and put the medium layer dry. The formula of the medium layer is: calcium nitrate ethanol solution, and the total solid content of the calcium nitrate is 1% to 30%. Specifically, the formula ratio is: calcium nitrate: 15wt%, absolute ethanol: 85wt%.

[0075] Step 3: Manually or mechanically cover the specified position on th...

Embodiment 3

[0080] A preparation process for a novel balloon catheter, comprising the steps of:

[0081] Step 1: Prepare the inner layer tube: use a dipping machine to form the inner layer tube by multiple dipping methods, and the thickness of the inner layer tube is 0.3-1.0 mm. The dipping operation is to dip the mold in a natural rubber solution with a total solid content of 50% and a viscosity of 600mPa.S for 20s to 50s. Dipping for 20s to 50s to obtain an inner tube.

[0082] Step 2: Cover the outer layer of the inner tube with a medium layer by dipping. The dipping operation is: dip the inner tube in a medium solution with a solid content of 1% to 30% for 2s, and put the medium layer dry. The formula of the medium layer is: calcium nitrate ethanol solution, and the total solid content of the calcium nitrate is 1% to 30%. Specifically, the formula ratio is: calcium nitrate: 15wt%, absolute ethanol: 84wt%, sodium lauryl sulfate: 1wt%.

[0083] Step 3: Manually or mechanically cover...

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Abstract

The invention discloses preparation technology for a novel saccule urethral catheter and the novel saccule urethral catheter obtained by adopting the same technology. The novel saccule urethral catheter comprises a catheter body, the catheter body comprises an inner layer tube and an elastic outer layer, a medium layer used for connecting the inner layer tube with the outer layer is further arranged between the inner layer tube and the outer layer, a saccule turgor cavity channel is formed in the tube wall of the inner layer tube, a liquid drainage hole is formed in the far end of the catheter body, the novel saccule urethral catheter further comprises an isolation layer arranged at the far end of the catheter body and with the adhesive force decreasing with water, the isolation layer is arranged between the medium layer and the outer layer, or the isolation layer is arranged between the inner layer tube and the medium layer, and the saccule turgor cavity channel extends to the position of the isolation layer. The novel saccule urethral catheter can guarantee that no step exists between a saccule structure and the catheter body, in addition, the saccule structure is in accordance with the diameter of the catheter body, and the medical risk when the product is used and the machining difficulty when the product is machined are reduced. Meanwhile, the invention further provides the preparation technology for the novel saccule urethral catheter.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a novel balloon catheter which is inserted into the human body smoothly without protrusions and has excellent performance, and also provides a preparation process for obtaining the novel balloon catheter. Background technique [0002] Most of the existing medical balloon catheters are made by covering the inner tube with a prepared balloon and then through subsequent processing. [0003] The existing balloon catheter made of rubber material has good tensile strength, and the tube body is soft and elastic, and is widely used clinically. However, because the balloon needs to be placed on the inner tube, the catheter structure produced Due to the problem of the manufacturing process, there are also considerable defects, such as: (1) the balloon is placed on the inner layer tube, and then the outer layer tube is soaked, which will cause an obvious step at the connection between the bal...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61L29/14
Inventor 文显生
Owner GUANGZHOU WELLLEAD MEDICAL EQUIP CO LTD
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