Fractionated Needles hand piece model for laser and similar photomedicine devices

Technical field:

Medical device.

Background:

Laser and photomedicine devices such as Intense Pulsed Light are frequently used for many medical reasons. The problem of the devices is the potential side effect including pigmentation, epidermal thermal damage and scarring. This is seen clearly if the lesion to be treated is deep to the skin surface ( epidermis ), therefore, If we pass the epidermis then we can minimize the side effects. The available lasers have several hand pieces non of which can avoid affecting the epidermis.

The invention is intended to make the devices more targeted therapy for dermal or subcutaneous lesions with minimal damage to the epidermis. Reaching the deep layers near the lesion can reduce the energy needed as the target is closer to the laser or light beam. The later is explained by the fact that the epidermis is reflecting, absorbing or blocking the light or laser beam. So, passing the top layer of skin avoid waste of energy.

Inventions may be compared:

A. United States Patent number: US 2019 / 0209234 Al, as an example of radiofrequency device that pierce the skin to cause effect deeper. It has several needles causing several zones of thermal damage.

B. United States Patent number USOO9675407B2, similar to A.

C. South Korean Patent number: KR101155437B 1, this on the other hand is laser but fractionated beams acting on the epidermis.

Summary of Invention:

The invention is developing a new hand piece that has fractionated laser with tips that penetrate the epidermis like fractionated radiofrequency devices. This is done by making lenses in each tip of the needles that penetrate the epidermis. This idea protects the epidermis, therefore avoiding scarring, pigmentation as side effect and reach the deeper targeted lesion. Many lesions located deep to the skin surface such as vascular, pigmentation or fat. This hand piece can be adopted by many devices that treat various problems like vascular lesion, pigmentation and fat. The hand piece with fractionated laser delivered by needles that pierce the epidermis to reach the targeted lesion is an invasive procedure. The design has to be sterilized or be a disposable extra head for the hand piece.

Technical problems:

Photomedicine and lasers for dermal lesions can cause unnecessary epidermal damage.

Solution to the problem:

Developing a hand piece that has Needles with laser lenses in the form of fractionated laser in each tip of the needles.

Advantages effects of the invention:

This invention will help avoiding the side effects that happen in the epidermis from the laser and light devices. Furthermore, with tiny needles piecing the skin surface very low risk of scarring. This invention will reduce the energy needed for the lesion as the beam is very close to the target. The loss of beam that happen in regular laser delivery from the epidermis and skin surface is avoided.

Brief description of the Drawings ( Figures ):

Figure 1: Hand piece tip.

Figure 2. surface of the the hand piece that contact the skin. Figure 3. The needles parts.

Figure 4: Needles action on skin.

Description of Embodiments:

The invention is a hand piece (figure 1) has several needles (Figure 1A). These needles move together emerging from the contacting surface ( figure I B). Then stop after reaching the desired depth ( figure 1 C). The contacting Surface can be made in several sizes and shapes figure 2. The figure has just examples and many surfaces can be made for each body part or lesions sizes.

The needles are in tubes inside the hand piece in neutral position (figure 3A). The needle has body that is acting as a shaft ( figure 3 B) and it transfer the beam to the sharp tip (figure 3 C). This design is an invasive procedure so it must be in a form that can be sterilized or be a disposable head with needles that can be changed for every patient.

The designed invention is made of multiple needles in a hand piece or can be extra disposable head to the hand piece as it is an invasive procedure that has to meet the standard safety protocol. Each individual needle is inside a tube in the hand piece or the extra head of the hand piece ( figure 4 A). In active treatment the needle emerge from the hand piece and pierce the skin surface (figure 4 B). After reaching the desired depth the tip of the need which has a lens that deliver the laser beam is activated to give the desired energy to the lesion ( figure 4 C). After the laser is delivered the needle is retracted ( figure 4 D) and reach back to the hand piece to neutral position ( figure 4 E). Developing the smallest possible needle to give a nonscarring results that can heal properly ( figure 4 F).

Industrial Applicability:

This invention is applicable for the medical industry as it will serve the high demand of the laser treatments. This invention will solve the frequent side effects seen from epidermal injury as well as it may improve the treatment results for deep lesions that cannot be reached by the available laser devices.

References:

1: Shah S, Alster TS. Laser treatment of dark skin: an updated review.Am J Clin Dermatol. 2010 Dec 1;11(6):389-97. doi: 10.2165/11538940-000000000-00000. Review. PubMed PMID: 20866114.