Balloon dissection apparatus
First Claim
1. An apparatus for separating tissue, comprising:
- a) a cannula tube having a lumen;
b) an obturator rod having a distal end, the obturator rod being received in the lumen of the cannula tube;
c) a guide having a distal end, the guide being movably received between the obturator rod and the cannula tube so that the distal end of the obturator rod engages the distal end of the guide when the obturator rod is moved in a proximal direction, the guide including;
a guide tube having a distal end, the guide tube being disposed around the obturator rod, an end collar fixedly disposed at the distal end, a first collar fixedly disposed on the guide tube proximally of the end collar, and a guide collar slidably disposed on the guide tube;
the guide collar having a proximal portion for engaging the first collar, the guide collar transitional from a first state defined by engagement of the proximal portion with a first region of the first collar having a first diameter to a second state defined by engagement of the proximal portion with a second region of the first collar having a second diameter different from the first diameter, wherein relative proximal movement between the obturator rod and the guide transitions the guide collar from the first state to the second state, wherein the guide collar is movable within the lumen of the cannula tube when in the second state; and
d) the guide collar being expandable to engage the cannula tube when the guide collar is in the first state; and
e) a balloon mounted on the obturator rod.
1 Assignment
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Accused Products
Abstract
Apparatus for creating an anatomic space in tissue in a body including an introducer device having a tubular member with a bore extending therethrough. A tunneling shaft assembly is slidably mounted in the bore of the introducer device. The tunneling shaft assembly includes a tunneling shaft having proximal and distal extremities. A blunt tip is secured to the distal extremity of the tunneling shaft. A balloon assembly is provided. The balloon assembly is removably secured to the tunneling shaft. The balloon assembly includes a deflated collapsed balloon. A sheath encloses the balloon and is carried by the tunneling shaft. The sheath has a weakened region extending longitudinally thereof permitting the sheath to be removed to release the balloon.
119 Citations
26 Claims
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1. An apparatus for separating tissue, comprising:
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a) a cannula tube having a lumen; b) an obturator rod having a distal end, the obturator rod being received in the lumen of the cannula tube; c) a guide having a distal end, the guide being movably received between the obturator rod and the cannula tube so that the distal end of the obturator rod engages the distal end of the guide when the obturator rod is moved in a proximal direction, the guide including; a guide tube having a distal end, the guide tube being disposed around the obturator rod, an end collar fixedly disposed at the distal end, a first collar fixedly disposed on the guide tube proximally of the end collar, and a guide collar slidably disposed on the guide tube; the guide collar having a proximal portion for engaging the first collar, the guide collar transitional from a first state defined by engagement of the proximal portion with a first region of the first collar having a first diameter to a second state defined by engagement of the proximal portion with a second region of the first collar having a second diameter different from the first diameter, wherein relative proximal movement between the obturator rod and the guide transitions the guide collar from the first state to the second state, wherein the guide collar is movable within the lumen of the cannula tube when in the second state; and d) the guide collar being expandable to engage the cannula tube when the guide collar is in the first state; and e) a balloon mounted on the obturator rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of guiding a tunneling shaft of a tissue separation apparatus, comprising:
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a) providing a cannula tube having a lumen, an obturator rod received in the lumen of the cannula tube;
a guide movably received between the obturator and the cannula, the guide including;a guide tube having a distal end, the guide tube being disposed around the obturator rod, an end collar fixedly disposed at the distal end, a first collar fixedly disposed on the guide tube proximally of the end collar, and a guide collar slidably disposed on the guide tube; the guide collar having a proximal portion for engaging the first collar, the guide collar transitional from a first state defined by engagement of the proximal portion with a first region of the first collar having a first diameter to a second state defined by engagement of the proximal portion with a second region of the first collar having a second diameter different from the first diameter, wherein relative proximal movement between the obturator rod and the guide transitions the guide collar from the first state to the second state, wherein the guide collar is movable within the lumen of the cannula tube when in the second state; b) moving the obturator rod in a proximal direction so that the guide collar engages the first region and expands engaging an inner surface of the cannula tube; and c) applying a force to the obturator rod so that the guide collar engages the second region releasing the guide from engagement with the inner surface of the cannula tube. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An apparatus for separating tissue, comprising:
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a) a cannula tube having a lumen; b) an obturator rod having a distal end, the obturator rod being received in the lumen of the cannula tube; and c) a guide movably received between the obturator and the cannula so that the obturator rod is substantially centered in the cannula tube when the obturator rod is moved in a proximal direction, the guide including; a guide tube having a distal end, the guide tube being disposed around the obturator rod, an end collar fixedly disposed at the distal end, a first collar fixedly disposed on the guide tube proximally of the end collar, and a guide collar slidably disposed on the guide tube; the guide collar having a proximal portion for engaging the first collar, the guide collar transitional from a first state defined by engagement of the proximal portion with a first region of the first collar having a first diameter to a second state defined by engagement of the proximal portion with a second region of the first collar having a second diameter different from the first diameter, wherein relative proximal movement between the obturator rod and the guide transition the guide collar from the first state to the second state, wherein the guide collar is movable within the lumen of the cannula tube when in the second state; and d) the guide collar being movable between an expanded first position in engagement with an inner surface of the cannula tube defining the first state and a second position released from engagement with the cannula tube defining the second state. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification