Ablative/coagulative urological treatment device and method

Abstract

A device / system and a method for the treatment of enlarged prostate and other urologic abnormalities are presented. This system enables the simultaneous attachment of several interstitial coaguiative treatment probes as well as an ablative fiber to perform a combined treatment utilizing the intervention time and the time of the localized anesthesia effect in an optimal manner. The amount of tissue removed by the urologist by vaporization can be kept to a minimum, thanks to the (delayed) improvement of the achieved symptom scores resulting from the denaturalizing effect of the interstitial coaguiative fibers. In one preferred embodiment, two or more types of delivery systems are embedded in a single device for achieving optimal tissue ablation and coagulation effects including at least one non-laser source such as microwave energy, capable of producing radiation energy to coagulate tissue and at least one laser source capable of producing radiation to ablate tissue. In another preferred embodiment, device comprises two or more laser sources which emit at adjustable wavelengths controllable by physician according to ablative and coaguiative needs and tissue penetration needs depending on their effective absorption in different tissue components. Wavelengths ranges are chosen such that tissue absorption properties change sensibly with small variations of such wavelengths, based on a steep region of the absorption curve. Radiation may be applied in continuous, semi-continuous or pulsed wave, in different combinations. In another preferred embodiment, optical fiber has a central core for transmitting laser radiation, and a cladding layer about the core that may further transmit other laser radiation of a different or a same wavelength as the core.

Description

[0001] Domestic priority under 35 USC 119(e) [0002] This application claims the benefit of and priority to US Provisional Application 61 / 242,677, filed September 15, 2009, by Wolfgang Neuberger, entitled "Ablative / Coagulative Urological Treatment Method and Device," which is incorporated herein by reference. technical field [0003] The present invention relates to a minimally invasive device for the treatment of benign prostatic hyperplasia (BPH). More particularly, the present invention relates to devices for simultaneous prostate ablation and coagulation of the prostate for BPH treatment. Background technique [0004] Many approaches to the treatment of BPH have been developed. A desired goal is to effectively remove prostatic obstruction of the urethra and, inter alia, to minimize recurrence, bleeding, damage to adjacent tissues, side effects, and patient pain and discomfort. This has been done using different methods. [0005] In some cases, drugs such as alpha-blo...

AI Technical Summary

Problems solved by technology

These methods have their drawbacks, especially for in-office procedures: while even larger prostates (up to 100 g) can be treated with an ablation approach, the amount of insertion time required to remove large amounts of tissue can be stressful for the often fully conscious patient during insertion and stress

However, clinical results are less certain and not guaranteed, and occur only after a delay of several weeks

As a result, immediate relief of symptoms cannot be achieved when pure coagulation procedures are used

Additionally, relapses sometimes occur

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