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Medicinal controlled release catheter

A technology of drug controlled release and urinary catheter, applied in the field of urinary catheter, which can solve the problems of poor manual controllability, difficulty in controlling the dosage and time of medication according to the disease condition, etc.

Inactive Publication Date: 2008-03-19
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, because the rapamycin is coated on the catheter, the rapamycin is released naturally during use, and the manual controllability is poor, so it is difficult to control the dosage and time of medication according to the condition.

Method used

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  • Medicinal controlled release catheter
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so as to help understand the content of the present invention.

[0015] As shown in Figures 1 and 2, the urinary catheter includes an insertion end 1 for insertion into a patient's body, and a urination port 4 and a drug delivery tube 6 exposed outside the body. The urination port at the urination port end 4 communicates with the catheter port 5 at the insertion end to form a catheterization channel to discharge urine. Catheters are made of silicone, silicon gel, latex, or rubber. When the urinary catheter is in use, there are six drug release holes 7 on the tube wall at the position in the urethra. The length of the catheter occupied by the drug release holes 7 is 5 cm, which can ensure that the medicinal liquid flows evenly around the catheter. The drug release hole 7 communicates with the drug delivery tube 6 through the drug delivery channel...

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Abstract

The present invention discloses a drug controlled release catheter which consists of an inserting end which is used to insert in vivo and an urination end which is exposed to the outside. The urine leading port of the inserting end is communicated with the urination port of the urination end to form a urine leading channel. The present invention is characterized in that the tube wall of the inserting end at the position of urethra is provided with a drug release hole which is used to release outward drug liquid; the urination end of the urine leading pipe which is exposed to the outside is provided with a drug transmission pipe which is communicated with drug release hole through a drug transmission channel; the drug release hole and the drug transmission channel are separated from the urine leading channel. Since the present invention is provided with the drug release hole and the drug transmission pipe, when in use, the rapamycin or other drugs can be released through the drug transmission pipe and the drug release hole, so that urethral stricture relapse after operation can be prevented. The method can control the drug released amount and time conveniently according to the requirement.

Description

technical field [0001] The invention relates to a medical product, in particular to a urinary catheter. Background technique [0002] Urethral strictures often occur after urethral injury due to scarring at the site of injury. Urethral stricture caused by urethral injury is very common clinically. The latter treatment method is: endoscopic urethral incision, or open surgery (stenotic urethrectomy + urethral anastomosis), and routine indwelling catheter for about 1 month. However, no matter which surgical method is used, the recurrence rate of postoperative stenosis is extremely high. For this reason, urethral stricture has always been an extremely difficult disease to deal with in urology. [0003] The invention patent application with Chinese patent application number 200710110764.6 relates to a rapamycin-coated urinary catheter, at least the outer surface of the catheter inserted into the urethra is coated with rapamycin at the insertion end of the catheter coating. W...

Claims

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Application Information

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IPC IPC(8): A61M25/00A61L29/16A61F5/44A61K31/436A61P13/02
Inventor 王平贤张艮甫黄赤兵范明齐冯嘉瑜肖亚方针强贾维胜
Owner THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
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