Hydraulic contrast lift system protocol
AssigneeDr. Mohamed Youssef D.M.D Inc.
InventorMohamed Youssef
Life of this patent
Estimating the term…
Abstract
An apparatus for maxillary sinus mucosa dissection and elevation, in humans or in animals, that lifts said mucosa away from the maxillary bone by injecting a fluid through an osteotomy or a hole in the maxillary bone to create an artificial space between said mucosa and the maxilla, that artificial space is to be subsequently filled with bone substitute or a dental implant or both, this apparatus is used in a new method to determine intra operatively whether the sinus mucosa is successfully lifted, along with the height of the lift, or if it has been perforated.
Claims25
1) An apparatus for maxillary sinus mucosa dissection and elevation, in humans or in animals, that lifts said mucosa away from the maxillary bone by injecting a fluid through an osteotomy or a hole in the maxillary bone to create an artificial space between said mucosa and the maxilla, comprising:
- a plurality of interchangeable retentive ends that provide retention for an injection stent within the osteotomy and seal it from the oral environment;
- a hollow injection stent that allows the flow of the contrast medium towards the maxillary sinus mucosa while supporting the retentive end to prevent its bending and that can be connected to a syringe through a tube;
- a hollow expanding injection stent that can be used interchangeably with the regular injection stent and has the same function as said stent plus allowing the operator to control the amount of retention into the osteotomy by expanding the retentive end from within, this stent can also be connected to a syringe through a tube;
- a click syringe acting as the fluid source that can both inject and suction the fluid and its plunger clicks against its barrel with every predetermined volume of fluid injected or suctioned and wherein the tip is connected to the tube;
- a plurality of conical plugs that have a similar external shape to that of the retentive ends and serve to plug one or more osteotomy sites at a time to allow for a more extensive sinus lift on the same side of the maxilla through multiple osteotomies;
- and a plurality of expanding plugs that have a similar external shape to that of the retentive ends and have the same function as the regular conical plugs plus allowing the operator to control the amount of retention into the osteotomy by expanding the conical plug from within.
3) A new use of an all non water soluble contrast media comprising Barium Sulfate suspensions and all water soluble iodine based contrast media comprising ionic and non ionic monomers and dimers, characterised in that these positive contrast media are not injected into an existing body cavity to detect its shape, quite the opposite they are used to create an artificial space and then reveal an image of the shape of the created space using radiography, also it does not remain in the body to be metabolised or excreted it is instead suctioned back out, so it virtually stays out of the body.
10) (canceled)
11) (canceled)
15) (canceled)
16) (canceled)
20) A method for maxillary sinus mucosa elevation and for determining whether said mucosa is successfully lifted or perforated, in the scenario of a single missing posterior tooth, comprising the steps of:
- a) establishing access to the maxillary sinus mucosa through an osteotomy in the maxillary bone;
- b) securing a working end into the osteotomy that can be reversibly fixed therein and that can provide an excellent seal inside and around the edge of the osteotomy sealing it from the oral cavity;
- c) using a fluid supply source that is connected to said working end and that allows the operator to control the injection rate and volume;
- d) injecting a fluid positive contrast medium contained in the fluid supply source towards the maxillary sinus mucosa exerting hydraulic pressure to separate said membrane from the bone of the maxilla;
- e) taking a plain radiograph of the operated site producing a two dimensional image,
- f) examining the image to identify either a well defined shape having convex radio-opacity with a dome-like, semilunar, or balloon like shape on the floor of the maxillary sinus which is indicative of success or an ill defined mostly flat radio-opacity within the maxillary sinus imitating the shape of stagnating fluid against the sinus floor or its anterior/posterior wall indicative that the sinus mucosa is perforated;
- g) removing the working end and suctioning out the contrast medium then rinsing with saline;
- h) if the shape is well defined, proceeding with the bone grafting or implant placement procedure or both;
- i) aborting the procedure or switching to a lateral window approach to have direct access to repair the membrane if the shape is ill defined.
Dependencies are inferred from the claim text.