Tissue acquisition device with indication system
AssigneeCook Medical Technologies LLC
InventorThomas W. McGhie
Life of this patent
Estimating the term…
Abstract
Among other things, there is disclosed a biopsy needle system in which the needle is capable of obtaining more than one length of sample. Generally, the needle includes an inner stylet, an outer cannula, and a handle connected to the stylet and cannula. The stylet has a notch that is extendable from the cannula to accommodate a tissue sample. An insert member is provided for attachment to the handle to make the amount of exposed notch smaller. Consequently, when the insert member is not attached to the handle, the needle can obtain a larger sample of tissue, and when the insert member is attached to the handle, the needle can obtain a smaller sample of tissue.
Claims20
A tissue sample acquisition device, comprising:
- a handle, the handle having an upper surface adapted to generally face a user during use of the device, the upper surface having at least first and second openings;
- a sampling portion having a slide member adapted to slide with respect to the upper surface of the handle, an elongated needle at least partially extending from the handle, and a hub connecting the needle and the slide member, the sampling portion having at least one visually contrasting portion, the at least one visually contrasting portion having an immediately observable visual contrast with one or more adjacent parts of the sampling portion and with the handle;
- wherein at least part of the sampling portion and the handle are movable with respect to each other between at least a first relative configuration and a second relative configuration, the first relative configuration corresponding to an unarmed state and the second relative configuration corresponding to an armed state, and wherein when the sampling portion and handle are in the first relative configuration, at least part of the at least one visually contrasting portion is visible through the first opening, and when the sampling portion and handle are in the second relative configuration, at least part of the at least one visually contrasting portion is visible through the second opening.
A tissue sample acquisition device, comprising:
- a handle, the handle having a surface with first and second openings;
- a sampling portion having an elongated cannula at least partially extending from the handle connected to a slide member adapted to slide with respect to the surface, the sampling portion having at least one visually contrasting portion, the at least one visually contrasting portion having an immediately observable visual contrast with one or more adjacent parts of the handle;
- wherein at least part of the sampling portion and the handle are movable with respect to each other between at least a first relative configuration and a second relative configuration, the first relative configuration corresponding to a first armed state operationally adapted to result in obtaining a first sample size, and the second relative configuration corresponding to a second armed state operationally adapted to result in obtaining a second sample size different from the first sample size, and wherein when the sampling portion and handle are in the first relative configuration, at least part of the at least one visually contrasting portion is visible through the first opening, and when the sampling portion and handle are in the second relative configuration, at least part of the at least one visually contrasting portion is visible through the second opening.
A tissue sample acquisition device, comprising:
- a handle having a first observation area and a second observation area;
- a sampling portion including an elongated member, wherein the sampling portion and the handle have at least a first relative configuration and a second relative configuration, the first relative configuration corresponding to an operative state that is either unarmed or armed to enable the sampling portion to capture a size of tissue sample, and the second relative configuration corresponding to an operative state that is armed to enable the sampling portion to capture a size of tissue sample, and wherein when the sampling portion and handle are in the first relative configuration, the first observation area has a highlighted condition, and when the sampling portion and handle are in the second relative configuration, the second observation area has a highlighted condition.
Dependencies are inferred from the claim text.