Device with shield for administering therapeutic substances using high velocity liquid-gas stream

A material and airflow technology, applied in the direction of nebulizers for treatment, medical equipment, medical equipment, etc., can solve problems such as hindering the use of devices

Pending Publication Date: 2020-03-10
TAVTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These sources are located remotely from the device, requiring the use of c...

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  • Device with shield for administering therapeutic substances using high velocity liquid-gas stream
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  • Device with shield for administering therapeutic substances using high velocity liquid-gas stream

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Embodiment Construction

[0038] The present invention relates to a device for administering therapeutic substances to tissue by directing a liquid-gas flow of droplets containing one or more therapeutic substances. The device comprises two elements, a housing and a stream ejection nozzle arrangement mechanically connected to or integrally formed from the housing. The present invention is constructed to prevent the rebound and / or dispersion of the droplets in the direction of the user after impinging on the tissue of the patient being treated.

[0039] Liquid-air flow consists of one or more therapeutic liquids delivered at high velocity, usually in the sub-alto range. Although the average droplet velocity is in the mid-subsonic range, some droplets can be accelerated to supersonic speeds.

[0040]To achieve these high velocities, gas is discharged from a device comprising a stream jet nozzle arrangement comprising one or more converging-diverging gas nozzles configured to accelerate the gas flow so a...

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Abstract

A device and a system for treatment of tissue by direct application thereto of therapeutic substances in the form of a stream of therapeutic droplets carried in a high velocity gas. The high velocitygas is produced by accelerating a flow of gas through at least one gas discharge nozzle. At least one flow of therapeutic substance is introduced into the high velocity gas through at least one liquiddischarge nozzle, thereby fragmenting the at least one flow of therapeutic liquid into a stream of therapeutic droplets. The stream is accelerated to a velocity similar to the velocity of the gas discharge flow. The accelerated therapeutic droplet stream is then applied to a tissue for therapeutic treatment. The device and the system contain a gas stream shield generator that provides a shield which prevents rebounding and dispersing droplets produced after impinging on the tissue from travelling in the direction of a user.

Description

technical field [0001] The present invention relates generally to devices for administering therapeutic substances to biological tissue, and more particularly to devices for applying high velocity therapeutic fluid-gas streams to deliver these substances to bodily tissue, typically in predetermined doses and concentrations. Background technique [0002] Devices for skin abrasion of exposed internal tissue are known in the art. One such device is described in US 7901373 and another in US 9233207, the entire contents of which are hereby incorporated by reference. These documents also provide a general overview of the prior art in dermal abrasions and dermal abrasion devices. [0003] Skin abrasion devices using a high velocity liquid aerosol are disclosed in the above references. The disclosed device is particularly successful in overcoming the difficulties of stagnant boundary layers. When a fluid stream is employed to irrigate a tissue surface, a boundary layer is formed,...

Claims

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Application Information

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IPC IPC(8): A61M35/00
CPCA61M35/003A61M5/30A61M5/2053A61M11/06A61M5/3007A61M5/20A61M2205/8218
Inventor 罗恩·索贝尔亚历山大·波利亚科夫
Owner TAVTECH
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