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Device with echogenic coating

A technology of echo reflection and coating, which is applied in echo/ultrasonic imaging agents, coatings, and acoustic diagnosis, and can solve problems such as whitening and hindering operator observation

Inactive Publication Date: 2014-02-19
WL GORE & ASSOC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, if the target is vertical, the sound waves reflected directly back can cause a "white out" effect, preventing the operator from viewing the target

Method used

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  • Device with echogenic coating
  • Device with echogenic coating
  • Device with echogenic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Materials

[0028] A stainless steel needle with a diameter of 0.040" and a length of approximately 4.8" was used as the echogenic reflection enhancement test object. Use unmodified needles as controls to compare modification results. The echogenicity of stainless steel needles coated with fused polymer particles was also compared with needles coated with Angiotech Pharmaceuticals, Inc., 1618 Station Street, Vancouver, British Columbia, Canada, V6A1B6. ) for comparison. Furthermore, a second embodiment was prepared by dissolving a thermoplastic copolymer of TFE and PMVE in a solution, as described in US Patent 7,049,380. The solution was sprayed at a rate of 2 mL / min using a nebulizer (Air Atom, Spray Systems Co.) set at 28.2 psig air pressure to form a fine mist. Then, slowly rotate the smooth needle and pass the spray back and forth, for a total of 3 passes. The solvent was air dried. The topography of the spray-coated device was increased compared to ...

Embodiment 2

[0029] Example 2: Method

[0030] Three different methods were used to evaluate and compare the treated samples.

[0031] All samples were submitted to the sonic imaging system. The test apparatus consisted of a 7.5 MHz transmit / receive transducer mounted on a flat bar with a sample holder located approximately 2.5 cm from the focal length of the transducer. The 7.5 MHz transducer produces a wavelength (λ) of 200 microns. At 2.5 cm, the signal is approximately 1 mm wide. The needle sample is placed in a holder perpendicular to the axis of the transmitting transducer. This is 0 degrees. The sample holder is removable for easy sample replacement. The holder is magnetically held in a rotatable device to measure the angle of the sample relative to the transmitting and receiving transducers. The samples and transducers were immersed in a room temperature water bath. Each sample was aligned with the transducer prior to data acquisition. This is done by increasing the attenua...

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Abstract

Devices with enhanced visualization in ultrasound imaging are provided.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Provisional Application Serial No. 61 / 483,089, filed May 6, 2011. field of invention [0003] The present invention relates to devices with enhanced echogenicity for better visualization in ultrasound imaging and methods for enhancing the echogenicity of the devices. Background of the invention [0004] Ultrasound technology has advantages over other imaging modalities. In addition to the health advantages of reducing or eliminating exposure to X-rays (fluoroscopy), the required equipment is small enough to be mobile, and it has advantages in the diagnosis of subsurface tissue morphology. In addition, ultrasound transducers can be made small enough to be placed inside the body, where they can provide resolution superior to existing magnetic resonance imaging and X-ray computed tomography. Furthermore, enhancement of interventional tools or devices that increase echogenicity to acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/18A61B8/08A61K49/22A61B17/00
CPCA61L27/34A61B2019/5425A61B19/54A61L31/10A61L27/50A61L31/18A61B8/0841A61B90/39A61B2090/3925C08L27/12A61B8/08A61K49/22A61L2300/606
Inventor E·H·库利K·M·弗勒里
Owner WL GORE & ASSOC INC