Film Clamping Element

Patent metadata

Field	Value
Publication number	US-2020188060-A1
Application number	US-201916680763-A
Country	US
Kind code	A1
Filing date	Nov 12, 2019
Priority date	Dec 12, 2018
Publication date	Jun 18, 2020
Grant date	—

Abstract

The inventive film clamping element (10) is held by a lip ring (14) and a vestibular ring (16), between which and possibly beyond which a film (12) extends. The film (12) and also the rings (14, 16) are elastically deformable, and it is provided that the film (12) comprises an attachment (24, 26) each at two positions opposite one another. Between these attachments (24, 26), at least one elastic band (20, 22) extends which is suitable to constrict the film (12) radially towards the inside.

First claim

1 . A film clamping element for dental treatments comprising
a lip ring ( 14 ) and a vestibular ring ( 16 ), between which a film ( 12 ) extends, wherein said film ( 12 ) and said lip ring and vestibular ring are elastically deformable, wherein the film ( 12 ) comprises an attachment ( 24 , 26 ) at least two positions opposite one another, starting from which attachment at least two positions between which positions at least one elastic band ( 20 , 22 ) extends which may be pulled over a part ( 28 , 30 ) of the vestibular ring ( 16 ) and with which the film ( 12 ) may be tensioned radially towards the inside.

2 . The film clamping element as claimed in claim 1 ,
wherein the film ( 12 ) extends beyond the lip ring ( 14 ) and the vestibular ring ( 16 ).

3 . The film clamping element as claimed in claim 1 ,
wherein the film ( 12 ) and the elastic bands ( 20 , 22 ) are more elastic than the rings and have an E-modulus which is smaller compared to that of the rings by 80 to 99%.

4 . The film clamping element as claimed in claim 1 ,
wherein two elastic bands ( 20 , 22 ) are provided which may be tensioned such that they complement one another to form a circle.

5 . The film clamping element as claimed in claim 1 ,
wherein each elastic band ( 20 , 22 ) may be pulled over a part of the vestibular ring ( 16 ).

6 . The film clamping element as claimed in claim 1 ,
wherein the attachment ( 24 ) extends away from the vestibular ring ( 16 ) along the film element ( 10 ), and guides and supports the elastic band(s) ( 20 , 22 ) at a support base ( 40 ) spaced apart from the vestibular ring ( 16 ) at a distal end of the vestibular ring.

7 . The film clamping element as claimed in claim 1 ,
wherein the attachment ( 24 , 26 ) is molded to the film element ( 10 ), and/or is fabricated of the same material, and wherein the attachment ( 24 ) extends over a fractional part of the distance between the lip ring ( 14 ) and the vestibular ring ( 16 ) over less than 60%.

8 . The film clamping element as claimed in claim 7 ,
wherein the attachment ( 24 , 26 ) is molded to the film element ( 10 ) integrally, and wherein the attachment ( 24 ) extends over a fractional part of the distance between the lip ring ( 14 ) and the vestibular ring ( 16 ) over 10 to 45% or over approximately 30%.

9 . The film clamping element as claimed in claim 1 ,
wherein the attachment ( 24 ) is connected or has been connected with the film element ( 10 ) at a connection site ( 36 ) spaced apart from the vestibular ring ( 16 ).

10 . The film clamping element as claimed in claim 1 ,
wherein the elastic band ( 20 ) comprises a flat or flat-oval cross-section with a width extending along the film element ( 10 ).

11 . The film clamping element as claimed in claim 1 ,
wherein the elastic band(s) ( 20 , 22 ) extend(s) along the film element ( 10 ) on an outside and pretension(s) the film element radially towards an inside when the elastic bands are pulled over the vestibular ring ( 16 ).

12 . The film clamping element as claimed in claim 1 ,
wherein the elastic band(s) ( 20 , 22 ) pull(s) the film element ( 10 ) further radially towards the inside at connection sites ( 36 ) spaced apart further from the attachments ( 24 , 26 ) than at the attachments ( 24 , 26 ) adjacent to the vestibular ring ( 16 ), when the elastic bands are pulled over the vestibular ring ( 16 ).

13 . The film clamping element as claimed in claim 1 ,
wherein the elastic band(s) ( 20 , 22 ) comprise approximately the same thickness as the attachment ( 24 ), and wherein the attachment comprises a width two to ten times a width of each elastic band ( 20 ).

14 . The film clamping element as claimed in claim 13 ,
wherein the elastic band thickness is ±30% thickness the thickness of the attachment ( 24 ), and wherein the width of the attachment is three times the width of each elastic band.

15 . The film clamping element as claimed in claim 1 ,
wherein the elastic bands ( 20 , 22 ) comprise a non-destructive elasticity of more than 1.2 times an initial length of the elastic bands.

16 . The film clamping element as claimed in claim 15 ,
wherein the elastic bands ( 20 , 22 ) comprise a non-destructive elasticity of at least of twice the initial length or ten times to 50 times the initial length.

17 . The film clamping element as claimed in claim 1 ,
wherein two elastic bands ( 20 , 22 ) each are supported on the same attachment ( 24 ) spaced apart from one another in the tangential direction of the rings by a few mm, and extend therefrom to the opposite attachment ( 26 ).

18 . The film clamping element as claimed in claim 1 ,
wherein a protrusion edge extends away from the film element ( 10 ) in an extension thereof starting from the vestibular ring ( 16 ), and wherein the attachments ( 24 , 26 ) are attached to the protrusion edge.

19 . The film clamping element as claimed in claim 1 ,
wherein the elastic bands ( 20 , 22 ) contract the film element ( 10 ) radially towards the inside by 10 to 30% of a diameter and produce padding folds in the film element when the elastic bands are pulled over the vestibular ring ( 16 ).

20 . A film clamping element for dental treatments comprising
a lip ring ( 14 ) and a vestibular ring ( 16 ), between and beyond the lip ring and vestibular ring a film ( 12 ) extends, wherein said film ( 12 ) and said lip and vestibular rings are elastically deformable, wherein at least one elastic band ( 20 , 22 ) extends radially outside of the film ( 12 ), which elastic band may be pulled over a part ( 28 , 30 ) of the vestibular ring ( 16 ) and with which the film ( 12 ) may be tensioned radially towards the inside and which is connected with the film ( 12 ) or a ring ( 14 , 16 ) at least two connection sites ( 36 ).

21 . A film clamping element for dental treatments comprising
a lip ring ( 14 ) and a vestibular ring ( 16 ), between and beyond the lip ring and vestibular ring a film ( 12 ) extends, wherein said film ( 12 ) and said lip and vestibular rings are elastically deformable, wherein at least one elastic band ( 20 , 22 ) extends along the film ( 12 ), with which the film ( 12 ) may be tensioned radially towards the inside at a position between the rings ( 14 , 16 ) and which is or may be connected with the film ( 12 ) or a ring ( 14 , 16 ) at least two connection sites ( 36 ).

Assignees

• Ivoclar Vivadent Ag

Inventors

• Mueller Frank
• Enggist Lukas
• Walther Nora

Classifications

• A61C5/82

  Dams; Holders or clamps therefor · CPC title

• A61B90/16

  Bite blocks · CPC title

• A61B1/24 Primary

  for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth · CPC title

• A61C19/00

  Dental auxiliary appliances (dental chairs or accessories therefor, working stands whether or not combined with chairs A61G15/00) · CPC title

• A61C5/90 Primary

  Oral protectors for use during treatment, e.g. lip or mouth protectors (A61C5/82 takes precedence) · CPC title