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Locally expanding balloon catheter

A urinary catheter and expansion technology, applied in the field of locally expanded balloon catheter, can solve problems such as difficulty urinating, insufficient support and expansion, urethral stricture, etc. Effect

Inactive Publication Date: 2010-10-20
NANJING BENQ HOSPITAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, F18-F20 three-chamber balloon catheters are routinely indwelled after adult male urethral injuries. If the indwelling catheter is too thin, it will not have enough support and dilation effect on the injured part of the urethra, and it will inevitably cause narrowing of the injured part on the basis of scar contracture. ring, resulting in thin urine stream and difficulty urinating after catheter removal
And if the indwelling catheter is too thick, patients often cannot persist for 8 weeks due to the oppression and discomfort caused by the catheter to the anterior urethra (especially to the external opening of the urethra), and it is easy to pull out the three-chamber balloon catheter too early. Urethral stricture after urethral injury

Method used

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Examples

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Embodiment 1

[0036] A kind of local expandable balloon catheter, comprising: catheter body 5, in the middle part of catheter body 5 is covered with expansion bag 9 and the connection between expansion bag 9 capsule wall and catheter body 5 is Sealed connection, a first fluid channel 4 is provided in the catheter body 5, the front port of the first fluid channel 4 communicates with the expansion bag 9, and the tail port of the first fluid channel 4 extends to the catheter On the end surface of the tail of the urinary tube body 5, a first one-way valve is provided at the tail of the first fluid passage 4. The structure described in this embodiment is suitable for three-chamber and four-chamber urinary catheters.

Embodiment 2

[0038] This embodiment is a three-chamber or four-chamber urinary catheter, that is, a partially expandable balloon catheter, comprising: a catheter body 5, and an expansion balloon is covered in the middle and front part of the catheter body 5 9 and the connection between the wall of the expansion capsule 9 and the catheter body 5 is a sealed connection, and a first fluid channel 4 is arranged in the catheter body 5, and the front port of the first fluid channel 4 is connected to the catheter body 5. The expansion balloon body 9 communicates, and the tail end port of the first fluid channel 4 extends to the tail end surface of the urinary catheter body 5, and a first one-way valve is arranged at the tail of the first fluid channel 4, and the urinary catheter body 5 The front end of the catheter is provided with a liquid inlet hole 6 and a drainage hole 7, and the front part of the catheter body 5 is covered with a fixed capsule body 8 and the connection between the capsule wal...

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Abstract

The invention discloses a locally expanding balloon catheter, comprising a catheter body, wherein the middle part of the catheter body is sleeved with an expanding capsule body the wall of which is connected with the catheter body in a sealing manner; a fluid passage is arranged in the catheter body, the front port of the fluid passage is communicated with the expanding capsule body, the tailing port of the fluid passage extends to the tailing end face of the catheter body, and a first one-way valve is arranged at the tailing part of a first fluid passage. The invention has moderate thickness, can provide sufficient support and expansion and does not generate excessive pressure on urethra mucosa and external orifice of urethra to cause patients to fell discomfort or even cause new iatrogenic stenosis. The invention is a thinner silicone catheter before fluid is injected into the expanding capsule, and can expand to a required size after a certain amount of fluid is injected. The invention can play the role of local hemostasis by compression at early period after surgery, and has the functions of local intermittent expansion during the period of catheter retention.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a locally expanded balloon urinary catheter. Background technique [0002] 1.1 Incidence of urethral stricture [0003] Urethral stricture after urethral injury is a headache for patients and headaches for urologists, and its treatment is also one of the common and challenging problems faced by urologists. Urethral injuries are most common in the bulbar urethra (anterior urethra) and the membranous urethra (posterior urethra). There are many surgical methods for the treatment of the two, but the literature reports that various surgical methods have a relatively high incidence of urethral stricture after surgery . Therefore, reducing the incidence of urethral stricture is a difficult problem that we must work hard to overcome. [0004] Urethral bulb injuries are mostly caused by straddling injuries. The traditional open urethral anastomosis is simple and easy, but the disadvantage is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/02A61M25/10A61F2/958
Inventor 吴宏飞杨杰吴兆凯卢晓明周鹤同于洪波李保军
Owner NANJING BENQ HOSPITAL CO LTD
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