# US 9,517,108 B2 · Medical marker, method and apparatus for producing a medical marker

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- Number: US 9,517,108 B2
- Document ID: US9517108B2
- Status: Granted
- Kind: B2
- Application number: 13/817,147
- Filed: 2010-08-16
- Published: 2013-06-13
- Granted: 2016-12-13
- Earliest claimed: 2010-08-16
- Assignees: Brainlab AG
- Applicants: Josef Wildgruber; Alexander Druse; Tilo Callenbach; Christian Classen
- Inventors: Josef Wildgruber; Alexander Druse; Tilo Callenbach; Christian Classen
- Web page: https://patentgrep.com/patent/US9517108B2

## CPC

- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- B29D 11/00605: {Production of reflex reflectors}
- A61B 2017/00526: {Methods of manufacturing}
- A61B 2034/2055: {Optical tracking systems}
- A61B 2090/3983: {Reference marker arrangements for use with image guided surgery}
- Y10T 29/49771: Quantitative measuring or gauging
- Y10T 29/49826: Assembling or joining
- Y10T 29/49863: with prestressing of part
- Y10T 29/53539: including work conveyor
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a method for producing a multi-part medical marker (1) comprising a marker core (2) consisting of at least two corresponding parts (2a, 2b) and comprising a detectable surface, said method comprising the following steps: —providing the parts (2a, 2b) of the marker core (2); —applying a detectable layer (4) to the surface (3) of the parts (2a, 2b) of the marker core (2); and —joining the parts (2a, 2b) of the marker core (2) together to form a marker (1). The present invention also relates to a multi-part medical marker comprising a marker core consisting of at least two corresponding parts (2a, 2b) and comprising a detectable surface, wherein the surface is substantially formed from a detectable coating (4) which is applied to the surface (3) of the parts (2a, 2b) of the marker core (2). The present invention also relates to an apparatus for producing a medical marker comprising a marker core (″2) and a detectable surface, comprising: —a first feeding device (16) for providing the marker core (2); —an application device (17) for applying a detectable layer to the surface (3) of the marker core (2); and —a transport device (18) for transporting the marker core (2) within the apparatus.

## Claims

### Claim 1

A method for producing a multi-part medical marker comprising a marker core consisting of at least two corresponding parts and comprising a detectable surface, said method comprising:
providing the at least two corresponding parts of the marker core;
applying a detectable layer to the surface of the parts of the marker core; and
joining the parts of the marker core together to form a marker.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising:
providing a textile strip laminar material, comprising a detectable side.

### Claim 3 (depends on 2)

The method according to claim 2, further comprising:
holding a circumferential area of the laminar material while pressing the surface of a part of the marker core against the application side of the laminar material, in such a way that the tension in the laminar material is maintained, such that the laminar material adapts to the surface of the part of the marker core without wrinkling.

### Claim 4 (depends on 2)

The method according to claim 2, further comprising:
applying an adhesive to an application side of the laminar material and determining a quality with which the adhesive has been applied by quantitatively determining the area of the surface within which the adhesive is present, wherein the adhesive is fluorescent and the area of the surface within which the adhesive is present can be determined by fluorescently stimulating the adhesive.

### Claim 5 (depends on 4)

The method according to claim 4, further comprising:
curing the adhesive by applying UV light, after the laminar material has been applied to the surface of the part of the marker core.

### Claim 6 (depends on 2)

The method according to claim 2, further comprising:
cutting off a rim of the part of the marker core together with a rim area of the laminar material so as to obtain a part of the marker core which exhibits a detectable hemispherical surface.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the corresponding parts of the marker core are joined together such that they abut each other at least at their respective cutting edges which are formed by cutting off their rims.