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US 2016/0256137 A1Published application
Dampened biopsy device and methods of use
AssigneeMerit Medical Systems, Inc.
InventorJeremy W. Snow
Life of this patent
Estimating the term…
Abstract
An impact biopsy device is disclosed. The impact biopsy device may be configured to displace various cutting elements, such as an outer tubular member and cutting element and a cannula to sever a tissue sample from a patient. The impact biopsy device may comprise an actuation system configured to transfer displacement or force to the cutting elements by the impact of an element on another element.
Claims20
A tissue biopsy device, comprising:
- a handle configured to be grasped by a user;
- a needle assembly operably coupled to the handle, the needle assembly configured to sever a tissue sample;
- and
- an actuation assembly operably coupled to the handle and needle assembly, the actuation assembly comprising:
- a biasing member;
- a first hub member configured to be displaced by the biasing member when the actuation assembly is actuated;
- a second hub member coupled to the needle assembly, the first hub member configured to displace at least a portion of the needle assembly when the first hub member impacts the second hub member;
- a dampening member configured to absorb a portion of the kinetic energy of the second hub member to arrest the motion of the second hub member with respect to the handle.
5 more elements
A tissue biopsy device comprising:
- a handle configured to be graspable by a user;
- a biasing member operably coupled to the handle, the biasing member configured to store potential energy when the biopsy device is in a primed configuration;
- a first hub member operably coupled to the handle and to the biasing member, the device configured such that the first hub member impacts a second hub member when the biopsy device is actuated such that the second hub member is displaced relative to the handle;
- and
- a dampening member operably coupled to the biopsy device;
- wherein, during operation, the potential energy stored in the biasing member is at least partially transferred to kinetic energy associated with the first hub member, the kinetic energy associated with the first hub member is at least partially transferred to the second hub member through impact between the first hub member and the second hub member, and kinetic energy associated with the second hub member is at least partially absorbed by the dampening member.
3 more elements
A method of obtaining a tissue sample through actuation of a biopsy device, the method comprising:
- releasing a first hub member such that the first hub member is displaced a first longitudinal distance along the biopsy device;
- impacting the first hub member on a second hub member such that the second hub member is displaced a second longitudinal distance along the biopsy device;
- and
- absorbing a portion of the energy associated with the second hub member with a resilient dampening element.
1 more element
Dependencies are inferred from the claim text.