US20060161178A1 - Removable cartridge for a microdermabrasion unit - Google Patents

Abstract

A removable cartridge is provided for use with a microdermabrasion unit. According to some embodiments, the cartridge includes a crystal source portion and a crystal waste portion. Moreover, the removable cartridge is adapted to receive a transfer apparatus from a microdermabrasion unit, the transfer apparatus being adapted to transfer crystals from the removable cartridge to the microdermabrasion unit. In other embodiments, the removable cartridge includes (i) a crystal source portion, (ii) a crystal waste portion, and (iii) a re-sealable portion adapted to prevent crystals from leaving the removable cartridge when a transfer apparatus is not present.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• The present application is a continuation of U.S. patent application Ser. No. 10/445,756, filed May 27, 2003.
FIELD
• The present invention relates to microdermabrasion. In particular, some embodiments of the present invention relate to a removable cartridge for a microdermabrasion unit.
BACKGROUND
• Microdermabrasion is a procedure that may be performed, for example, to exfoliate layers of a patient's skin. In some cases, microdermabrasion is used to alleviate a skin condition (e.g., acne scars) and/or or to reduce the appearance of wrinkles (e.g., through collagen regeneration). Moreover, blood containing oxygen and nutrients may be drawn to the surface to help feed and repair the patient's skin cells.
• During the microdermabrasion procedure, crystals may be supplied from a first container. A vacuum air flow is then used to spray or apply the crystals onto the patient's skin in a uniform manner. The crystals, along with dead skin cells, are then deposited in a second container to be eventually discarded.
• An operator will need to replace or re-fill the first container when it runs out of crystals. Similarly, the operator will need to replace or empty the second container when it becomes filled with used crystals. Often, the operator will find it time consuming and inconvenient to perform these tasks-especially when the first container becomes empty (or the second container becomes full) while the microdermabrasion procedure is being performed on a patient. In addition, replacing, re-refilling and/or emptying the containers can be cumbersome (e.g., the container may be heavy and crystals may be spilled during the process).
• In some devices, a pick-up tube with a small hole is provided within the first container. A vacuum air flow through the pick-up tube draws crystals into the hole to remove crystals from the first container. In this case, however, it can be difficult to adjust the rate at which crystals are drawn through the hole (e.g., to apply a weak or strong flow of crystals to the patient's skin).
• Moreover, the crystals in the first container may become clogged (preventing the crystals from being drawn through the hole in the pick-up tube). In some devices, an operator can reverse the direction of a vacuum air flow to attempt to dislodge the clogged crystals. It can be difficult, however, to design a microdermabrasion device to reverse the vacuum air flow in an appropriate fashion (e.g., such that used crystals are not carried in the reversed vacuum air flow). In addition, the reversed vacuum air flow may not dislodge the crystals.
SUMMARY
• To alleviate problems inherent in the prior art, some embodiments of the present invention introduce a removable cartridge having a crystal source portion and a crystal waste portion. The removable cartridge is adapted to receive a transfer apparatus from a microdermabrasion unit, the transfer apparatus being adapted to transfer crystals from the removable cartridge to the microdermabrasion unit.
• According to other embodiments, the removable cartridge includes (i) a crystal source portion, (ii) a crystal waste portion, and (iii) a re-sealable portion adapted to prevent crystals from leaving the removable cartridge when a transfer apparatus is not present.
• According to still other embodiments, a microdermabrasion unit includes a gravity drain to transfer crystals from a crystal source. Moreover, the unit includes a rotatable pick-up section having an opening through which crystals are drawn due to a vacuum air flow in the pick-up section, wherein rotation of the pick-up section varies a rate at which crystals are drawn though the opening.
• With these and other advantages and features of the invention that will become hereinafter apparent, the invention may be more clearly understood by reference to the following detailed description of the invention, the appended claims, and the drawings attached herein.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 illustrates a microdermabrasion system according to some embodiments.
• FIG. 2 illustrates a removable cartridge according to some embodiments.
• FIG. 3 illustrates another removable cartridge embodiment.
• FIG. 4 is a cross-sectional view of a removable cartridge including a re-sealable portion according to some embodiments.
• FIG. 5 is a cross-sectional view of a removable cartridge receiving a pick-up tube according to some embodiments.
• FIG. 6 is a cross-sectional view of a removable cartridge receiving a gravity drain according to another embodiment.
• FIG. 7 illustrates a vacuum air flow in a microdermabrasion system according to some embodiments.
• FIG. 8 illustrates a method according to some embodiments.
DETAILED DESCRIPTION
• Some embodiments described herein are directed to a microdermabrasion system to apply “crystals” to a patient's skin. As used herein, the term “crystals” can apply to any substance that is applied to a patients skin during a microdermabrasion procedure. By way of example only, the crystals may comprise aluminum oxide crystals and/or other appropriate substances.
• Microdermabrasion System
• As illustrated inFIG. 1, amicrodermabrasion system100 may include amicrodermabrasion unit110 coupled to a hand-piece120. In particular, themicrodermabrasion unit110 may provide a vacuum air flow (containing crystals) to the hand-piece120 via anoutput tube122. An operator (e.g., a nurse or technician) may hold the hand-piece120 and direct the air flow and crystals to a patient's skin. After striking the skin, the “used” crystals and skin cells return to the hand-piece120 and are transferred back to theunit110 via aninput tube124. The output and/orinput tubes122,124 may comprise, for example, flexible plastic tubing with a 3/16″“ inner diameter and a 5/16″” outer diameter.
• Themicrodermabrasion unit110 may also include an on/off control switch130 (e.g., to apply or remove power to the unit110). Themicrodermabrasion unit110 may further include avacuum adjustment control140, such as a knob that can be rotated to change the pressure of the air flow. Similarly, avacuum pressure gauge150 may indicate the amount of pressure currently associated with the air flow. According to other embodiments, a digital vacuum pressure gauge may be provided.
• Acrystal flow control160 may also be provided. Thecrystal flow control160 may comprise, for example, a knob that can be rotated 90 degrees to change the amount of crystals contained in the air flow. One example of acrystal flow control160 is described with respect toFIG. 6.
• A “removable”cartridge200 may be attached to themicrodermabrasion unit110 to supply crystals to the air flow and/or to store used crystals (and skin cells) for eventual removal. A used herein, the term “removable” means that theunit110 and/or thecartridge200 have been adapted such that thecartridge200 can be removed and replaced by an operator. Some examples ofremovable cartridges200 will now be described with respect toFIGS. 2 through 6.
• Removable Cartridges
• FIG. 2 illustrates aremovable cartridge200 according to some embodiments. In particular, theremovable cartridge200 includes acrystal source portion210 coupled to abase220. Theremovable cartridge200 also includes acrystal waste portion230 coupled to thebase220. According to some embodiments the seals between thebase220 and the bottom rims of thecrystal source portion210 andcrystal waste portion230 are substantially air tight.
• Thecrystal source portion210 holds a supply of crystals that will be applied to a patient's skin during a microdermabrasion procedure and thecrystal waste portion230 holds used crystals and skin cells. That is, in anew cartridge200 thecrystal source portion210 will be substantially full (with un-used crystals) and thecrystal waste portion230 will be substantially empty. After the microdermabrasion procedure is performed, thecrystal source portion210 will be substantially empty and thecrystal waste portion230 will be substantially full (with used crystals and skin cells). In this way, an operator can both replenish the crystal supply and discard used crystals and skin cells by replacing a singleremovable cartridge200. According to some embodiments, thecrystal source portion210 and/or thecrystal waste portion230 are made using a transparent material, such as see-through plastic (e.g., to let an operator see how much crystal remains in the crystal source portion210).
• As described with respect toFIG. 4, theremovable cartridge200 may include a re-sealable portion. Moreover, as described with respect toFIGS. 4 through 6, theremovable cartridge200 may be adapted to receive a transfer apparatus (e.g., a portion of themicrodermabrasion unit110 that is adapted to transfer crystals from theremovable cartridge200 to the microdermabrasion unit110). Although these features are described with respect to theremovable cartridge200 illustrated inFIG. 2, different cartridge designs may be used in accordance with any of the embodiments described herein. For example,FIG. 3 illustrates another design in which aremovable cartridge300 includes asingle crystal portion310 coupled to abase320. Adivider330 separates thecrystal portion310 into acrystal source area340 and acrystal waste area350.
• Removable Cartridges Having a Re-Sealable Portion
• FIG. 4 is a cross-sectional view of aremovable cartridge400 according to some embodiments. As before, thecartridge400 includes acrystal source portion410 coupled to a base420 (to hold a supply of crystals) and acrystal waste portion430 coupled to the base420 (to hold used crystals).
• In this case, theremovable cartridge400 also includes are-sealable portion440. As will be explained, theportion440 is adapted to prevent crystals from leaving theremovable cartridge400 when a transfer apparatus (e.g., a tube from a microdermabrasion unit) is not present. Theportion440 is “re-sealable” in that it can be opened and closed more than once. Moreover, according to some embodiments, inserting a transfer apparatus into theremovable cartridge400 automatically opens there-sealable portion440.
• By way of example, there-sealable portion440 might be foam unit (e.g., a disc-shaped unit) located inside ahole422 in thebase420. The foam unit may have aslit442 running though it's center (e.g., shaped as a line or an “x”) such that a tube can be inserted through theslit442. When no tube is present, the foam may expand so as to prevent crystals from leaving thecrystal supply portion410. According to some embodiments, the foam unit may further serve as a filter that permits a flow of air into the crystal source portion410 (e.g., to facilitate a removal of crystals from thecrystal supply portion410 via a transfer apparatus).
• According to some embodiments, thebase420 includes awaste inlet hole424 and anair outlet hole426. A waste inlet portion432 (e.g., a tube) runs through thewaste inlet hole424 to receive used crystals. An air outlet portion434 (e.g., a tube) runs through theair outlet hole426 to allow air to flow out of thecrystal waste portion430. A filter436 (e.g., a foam filter) associated with the air output portion may prevent used crystals from leaving thecrystal waste portion430.
• Removable Cartridges Adapted to Receive a Transfer Apparatus
• FIG. 5 is a cross-sectional view of aremovable cartridge500 according to some embodiments. As before, thecartridge500 includes a base520 coupled to acrystal source portion510 and acrystal waste portion530. In this case, a transfer apparatus has been inserted into theremovable cartridge500. In particular, a pick-upsection550 having a vacuum air flow has been inserted into thecrystal source portion510. The pick-upsection550 may be, for example, a tube having an inverted U shape. The pick-upsection550 further includes anopening552. As a result, a flow of air through the pick-upsection550 will draw an amount of crystal from thecrystal source portion510 through the opening552 (e.g., so that the crystal can be applied to a patient's skin). In this example, are-sealable portion540 includes a slit that is co-planar with the cross-sectional view and that extends from thecrystal source portion510 to the bottom of theportion540.
• FIG. 6 is a cross-sectional view of aremovable cartridge600 according to another embodiment. As before, thecartridge600 includes a base620 coupled to acrystal source portion610 and acrystal waste portion630. In this case, the transfer apparatus received by thecartridge600 through are-sealable portion640 is a gravity drain650 (e.g., a tube) to transfer crystals from thecrystal source portion610. According to some embodiments, the bottom surface of thecrystal source portion610 inclines from the sides of thecrystal source portion610 down to an opening that receives thegravity drain650 to facilitate this transfer.
• Thegravity drain650 transfers crystals through anopening652 to achamber660. A pick-up section670 (e.g., a metal tube) in thechamber660 includes anopening672 into which crystals are drawn when avacuum air flow674 travels through the pick-upsection670. According to some embodiments, the pick-upsection670 is rotatable (e.g., so that theopening672 can move between upper and lower positions in the chamber660). Moreover, rotation of the pick-upsection670 may vary a rate at which crystals are drawn into theopening672. For example, when theopening672 is in an upper position (e.g., pointing toward the gravity drain650) more crystals may be drawn into theopening672 as compared to when it is in a lower position (e.g., pointing away from the gravity drain650). According to some embodiments, rotating acrystal flow control160 on the face of amicrodermabrasion unit110 causes the pick-upsection670 to rotate. According to another embodiment, an operator can slide the pick-up670 section along its axis (e.g., instead of, or in addition to, rotating the pick-upsection670 around the axis) to vary that rate at which crystals are drawn into the opening672 (e.g., more crystals may be drawn into the opening when it is directly under the gravity drain650).
• An agitator676 (e.g., a thin rod) may be attached to the pick-upsection670. In this case, rotation of the pick-upsection670 may also cause theagitator676 to move crystals in the chamber660 (e.g., to dislodge crystals that have become clogged).
• Vacuum Air Flows
• FIG. 7 illustrates avacuum air flow700 in a microdermabrasion system according to some embodiments. At (A), air is drawn into a pick-up tube located within a microdermabrasion unit. As the air flows through the pick-up tube, crystals in acrystal source portion210 are supplied to the air flow at (B). The air flow travels through tubing internal to the microdermabrasion unit (e.g., tubing having a ¼″” inner diameter and a ⅜″” outer diameter) and reaches a set of detachable connectors126 (e.g., an outflow connector on the face of the microdermabrasion unit). The air flow continues through tubing external to the microdermabrasion unit (e.g., tubing having a 3/16″” inner diameter and a 5/16” outer diameter) and eventually reaches a hand-piece120 where the air flow and the crystals are applied to a patient's skin at (C).
• The air flow, used crystals, and skin cells return through tubing to theconnectors126 on the face of the microdermabrasion unit. Internal tubing (e.g., tubing having a ¼″” inner diameter and a ⅜″” outer diameter) transfers the airflow to acrystal waste portion230 at (D), and the air flow exits the crystal waste portion at (E). Note that a filter positioned between (D) and (E) may remove the used crystals and skins cells from the air flow (e.g., to protect other elements of the microdermabrasion unit). Finally, the air flow is pulled through tubing and a four-way coupling720 by apump710 at F. Thepump710 may, for example, create a vacuum air flow of 0 to 30 inches of mercury.
• According to some embodiments, the four-way coupling720 is also coupled to avacuum pressure gauge150 and/or ableeder valve730.
• Method
• According to some embodiments, a removable cartridge for a microdermabrasion unit is disposable (e.g., after being used for one patient).FIG. 8 illustrates a method according to other embodiments. Note that the steps illustrated inFIG. 8 may be performed in any order that is practical. The method may be performed, for example, after the crystals in a removable microdermabrasion cartridge have been substantially used (e.g., the crystal supply portion is substantially empty and the crystal waste portion is substantially full). At802, the crystal waste portion of the removable cartridge is cleaned, and the crystal source portion is re-filled with un-used crystals at804. At least one filter in the removable cartridge may be replaced at806 (e.g., because the filter may become less effective after filtering an amount of used crystals and skin cells). In this way, the removable cartridge may be re-used (e.g., for another patient).
• Additional Embodiments
• The following illustrates various additional embodiments of the present invention. These do not constitute a definition of all possible embodiments, and those skilled in the art will understand that the present invention is applicable to many other embodiments. Further, although the following embodiments are briefly described for clarity, those skilled in the art will understand how to make any changes, if necessary, to the above-described apparatus and methods to accommodate these and other embodiments and applications.
• Although certain embodiments have been described, it will be understood by those skilled in the art that a removable cartridge may be configured in any number of ways. For example, a crystal source and/or waste portion might extend into the base (or even be contained entirely within the base). Similarly, a removable cartridge might include crystal source and waste portions without a base (e.g., the crystal source and waste portions might be attached directly to each other). According to another embodiment, the crystal source and waste portions are not attached at all (e.g., they could be separately removable).
• The present invention has been described in terms of several embodiments solely for the purpose of illustration. Persons skilled in the art will recognize from this description that the invention is not limited to the embodiments described, but may be practiced with modifications and alterations limited only by the spirit and scope of the appended claims.

Claims (15)

1. A removable cartridge, comprising:

a crystal source portion;

a crystal waste portion, wherein the removable cartridge is adapted to receive a transfer apparatus from a microdermabrasion unit, the transfer apparatus being adapted to transfer crystals from the removable cartridge to the microdermabrasion unit; and

a resealable portion to prevent crystals from leaving the removable cartridge when the transfer apparatus is not present, wherein the resealable portion is moved to an open configuration by the insertion of the transfer apparatus into the removable cartridge, wherein the resealable portion does not prevent crystals from leaving the removable cartridge when in the open configuration.

2. The cartridge ofclaim 1, wherein the transfer apparatus is a pick-up section having a vacuum air flow.

3. The cartridge ofclaim 1, wherein the re-sealable portion is located at the bottom of the removable cartridge and is adapted to have an opening when a transfer apparatus is present.

4. The cartridge ofclaim 3, wherein the re-sealable portion is adapted to permit a flow of air into the crystal source portion.

5. The cartridge ofclaim 1, wherein the bottom of the crystal source portion (i) includes an opening to receive a transfer apparatus and (ii) inclines from the sides of the crystal source portion down to the opening.

6. The cartridge ofclaim 1, wherein the crystal waste portion includes:

a waste input portion to receive used crystals; and

an air output portion.

7. The cartridge ofclaim 6, further comprising:

a filter associated with the air output portion to prevent particles from leaving the crystal waste portion.

8. The cartridge ofclaim 1, further comprising:

a base coupled to both the crystal source portion and the crystal waste portion, wherein the base is adapted to be removably coupled to the microdermabrasion unit.

9. The cartridge ofclaim 1, wherein the crystal source portion is adapted to hold a relatively small amount of crystal.

10. A removable cartridge, comprising:

a base of the removable cartridge, the base being adapted to be removably coupled to a microdermabrasion unit;

a crystal source portion coupled to the base; and

a crystal waste portion coupled to the base, wherein the removable cartridge is to receive a transfer apparatus from the microdermabrasion unit, the transfer apparatus being adapted to transfer crystals from the removable cartridge to the microdermabrasion unit.

11. The cartridge ofclaim 10, wherein the transfer apparatus is a pick-up section having a vacuum air flow.

12. The cartridge ofclaim 10, wherein the bottom of the crystal source portion (i) includes an opening to receive a transfer apparatus and (ii) inclines from the sides of the crystal source portion down to the opening.

13. The cartridge ofclaim 10, wherein the crystal waste portion includes:

a waste input portion to receive used crystals; and

an air output portion.

14. The cartridge ofclaim 13, further comprising:

a filter associated with the air output portion to prevent particles from leaving the crystal waste portion.

15. The cartridge ofclaim 10, wherein the crystal source portion is adapted to hold a relatively small amount of crystal.

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