DEVICE FOR MEASURING THE SIZE OF AN INTRACARDIAC OPENING

• US 20110046495A1
• Filed: 08/11/2010
• Published: 02/24/2011
• Est. Priority Date: 08/21/2009
• Status: Abandoned Application

• Current Assignee: Peter Osypka
• Original Assignee: Peter Osypka
• Inventors: Osypka, Peter
• Application Number:
  US12/854,406
• Publication Number:
  US 20110046495A1
• Time in Patent Office: Days
• US Class Current: 600/508
• CPC Class Codes: A61B 5/107 Measuring physical dimensions, e.g. size of the entire body or parts thereof
• CPC Class Codes: A61B 5/1076 for measuring dimensions inside body cavities, e.g. using catheters A61B3/1005 takes precedence
• CPC Class Codes: A61B 5/6858 with a distal basket, e.g. expandable basket
• CPC Class Codes: A61B 5/6869 Heart
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 8/0883 for diagnosis of the heart

Abstract

A device (1) for measuring the diameter of an intracardiac opening (2), having a hollow body (3) made from a metal-wire mesh is provided that has twisted individual bars that form the jacket of the discontinuous wall (5) of the hollow body (3) and form longitudinal stabilization between two elastically deformable metal-wire meshes (6) forming the end sides of the hollow body (3) and are deformable in a position of use by an edge (17) of the opening (2) in a contact region into the interior of the hollow body (3). Thus, with the device (1), the size of the opening (2) can be determined in that, in an X-ray or ultrasound image, the deformation of the individual bars (4) is comparable through the opening (2) with markings (19, 20) arranged on the hollow body (3) and/or on the device (1) adjacent to the hollow body (3).

Claims

1. Device (1) for measuring the size of an intracardiac opening (2), comprising a hollow body (3) that has an elastic wall (5) and is insertable into the opening (2) and can expand perpendicular to an insertion direction and having at least two transparent markings (19, 20) arranged at a predetermined distance to each other and the distance can be compared with a molding of the hollow body (3) caused by an edge (17) of the opening (2) to be measured, the hollow body (3) is permeable to liquid and is constructed as a metal cage, the hollow body (3) is discontinuous in a middle region between end sides (7, 8) thereof and the discontinuity is spanned by individual bars (4) that are each formed by at least two twisted wires (23).

2. The device according to claim 1, wherein the individual bars (4) are arranged parallel to each other and to a longitudinal middle axis of the hollow body (3).

3. The device (1) according to claim 1, wherein the hollow body (3) is made from at least one of an elastic material or a memory metal.

4. The device (1) according to claim 1, wherein the hollow body (3) has, in a measurement region, several of the individual bars (4) describe a cylindrical lateral surface and are sufficiently stable for stabilizing the hollow body (3) and are soft and flexible in the contact region (18) with the edge (17) of the opening (2).

5. The device (1) according to claim 1, wherein, in a position of use, the individual bars (4) are adapted to extend through the opening (2) and contact the edge (17) of the opening (2).

6. The device (1) according to claim 1, wherein the hollow body (3) has wire sections (23) that are twisted with each other and are in touching contact, in a position of use, with the edge (17) of the opening (2).

7. The device according to claim 1, wherein the hollow body (3) comprises a metal-wire mesh (6) that can be deformed elastically in a radial direction against a restoring force from a maximum, expanded position on each of its end sides (7, 8) arranged on both sides of the opening (2) in a position of use.

8. The device according to claim 1, wherein ends (7, 8) of the hollow body (3) are connected by a connection element (9) deformable elastically against a tensile stress and that extends centrally through the hollow body (3).

9. The device according to claim 1, wherein an insertion catheter is provided with a sleeve-shaped receptacle (12) for the hollow body (3) in a radially folded-together or compressed form.

10. The device according to claim 9, wherein the hollow body (3) is mounted on a push-and-pull element (11) and can be moved with the push-and-pull element (11) into the receptacle (12) and out from the receptacle (12).

11. The device according to claim 10, wherein the receptacle (12) is constructed on a shaft (14) of the insertion catheter holding the hollow body (3) in a position of use.

12. The device according to claim 1, wherein the markings (19, 20) are arranged adjacent to the hollow body (3) on at least one of a shaft (14) holding the hollow body (3) for of its feed and for its use or on a push-and-pull element (11) connected to the hollow body (3).

13. The device according to claim 1, wherein the markings (19, 20) are arranged on the hollow body (3) on an individual bar (4).

14. The device according to claim 1, wherein the hollow body (3) is mounted so that it is movable on one front end (7, 8) on a push-and-pull element (11).

15. The device according to claim 1, wherein the hollow body (3) is connected detachably to at least one of a shaft (14) or to a push-and-pull element (11).