Through-port heart stabilization system
First Claim
1. A heart stabilization device, comprising:
- a) a shaft having a proximal end provided with a handle, a distal end, and defining a longitudinal axis; and
b) a pair of stabilization arm assemblies at said distal end of said shaft, each of said stabilization arms provided with a substantially rigid foot having a contact surface which is adapted to contact a surface of the heart, said feet having a first configuration in which said feet extend substantially parallel to said longitudinal axis and are substantially in contact with each other, and a second configuration in which feet extend substantially parallel to said longitudinal axis and are displaced relative to each other; and
c) an actuator adapted to move said feet between said first and second configurations.
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Accused Products
Abstract
A heart stabilizer includes a shaft and two articulating arms coupled to a distal end of the shaft. At the end of each arm is a rotatable foot adapted to be angled relative to the heart wall contour and apply pressure against the wall of the heart to effectively eliminate motion of the heart wall between the feet. The stabilizer is adapted to be collapsible (foldable) to be inserted through the port device and locked longitudinally relative thereto. The stabilizer is also adapted to be deployed into an open configuration and then manipulated by actuation of a proximal control and actuation handle into a selected orientation.
17 Citations
47 Claims
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1. A heart stabilization device, comprising:
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a) a shaft having a proximal end provided with a handle, a distal end, and defining a longitudinal axis; and
b) a pair of stabilization arm assemblies at said distal end of said shaft, each of said stabilization arms provided with a substantially rigid foot having a contact surface which is adapted to contact a surface of the heart, said feet having a first configuration in which said feet extend substantially parallel to said longitudinal axis and are substantially in contact with each other, and a second configuration in which feet extend substantially parallel to said longitudinal axis and are displaced relative to each other; and
c) an actuator adapted to move said feet between said first and second configurations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 38, 39)
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24. A heart stabilization device, comprising:
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a) a shaft having a proximal end provided with a handle, a distal end, and defining a longitudinal axis; and
b) a pair of stabilization arm assemblies at said distal end of said shaft, each of said stabilization arms provided with a foot having a contact surface which is adapted to contact a surface of the heart;
c) a controller which moves said arm assemblies and said feet into selected configurations; and
d) a lock which locks said arm assemblies and said feet in a selected configuration.
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34. A heart stabilization device, comprising:
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a) a shaft having a proximal end provided with a handle, a distal end, and defining a longitudinal axis;
b) a first and second stabilization arms at said distal end of said shaft, said first and second arms including resilient biasing means to urge said first and second arms together in an outstretched configuration in which portions of said arms are in contact;
c) a control element coupled to said handle; and
d) a first cable extending from said first arm to said control element and a second cable extending from said second arm to said control element, wherein operation of said control element causes tensioning of said first and second cables such that said arms are moved from said outstretched configuration to a second configuration in which said arms are spaced apart.
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37. A heart stabilization device, comprising:
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a) a shaft having a proximal end, a distal end, and defining a longitudinal axis; and
b) a pair of stabilization arm assemblies at said distal end of said shaft, each of said stabilization arms provided with an upper arm rotatable relative to said distal end of said shaft in a first plane, and a lower arm rotatable relative to said upper arm in a second plane different than said first plane.
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40. A heart stabilization device, comprising:
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a) a shaft having a proximal end, a distal end, and defining a longitudinal axis; and
b) a pair of stabilization arm assemblies at said distal end of said shaft, each of said stabilization arms provided with a foot having a contact surface which is adapted to contact a surface of the heart; and
c) means for coupling said shaft to a port. - View Dependent Claims (41, 42, 43, 44, 46, 47)
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45. A shaft lock for coupling the shaft of a medical instrument to a proximal end of a port, said shaft lock comprising:
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a) a housing having upper and lower portions and defining a socket therebetween, said lower portion including a slotted tubular portion;
b) a compressible collet rotatable within said socket, said collet defining a pathway adapted to receive the shaft of the medical instrument;
c) a clamp which compresses said collet to substantially lock the shaft of the medical instrument within said collet;
d) a bushing having a proximal portion with a first diameter, and a relatively distal portion with a second diameter greater than said first diameter; and
e) means for moving said bushing relative to said slotted tubular portion such that said portion of said bushing with said second diameter moves under said slotted tubular portion and increases an exterior diameter of said slotted tubular portion.
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Specification