Safety penetrating instrument
First Claim
1. A safety penetrating instrument comprisingan elongate, tubular needle having a longitudinal axis, a proximal end and an angled, open distal end defining a peripheral edge having a leading edge defining a sharp tip for penetrating tissue and a trailing edge, said peripheral edge being disposed in a plane positioned at an acute angle relative to said longitudinal axis of said needle;
- a safety probe movably disposed in said needle having a proximal end and a distal end having an end surface disposed at substantially the same angle as said acute angle relative to said longitudinal axis of said needle, said safety probe being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed within said needle to expose said needle tip;
hub means for receiving said proximal ends of said needle and said safety probe;
bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed;
housing means abutting said hub means; and
an elongate, tubular portal sleeve surrounding said needle and having a proximal end secured to said housing means and a distal end having a peripheral edge disposed in substantial alignment with or forward of said trailing edge of said needle distal end whereby said needle and said portal sleeve present a substantially smooth profile to facilitate tissue penetration of said portal sleeve with said needle.
0 Assignments
0 Petitions
Accused Products
Abstract
The safety penetrating instrument includes a tubular needle having a distal end with a sharp tip, a safety probe movable within the needle between an extended position protecting the needle tip and a retracted position exposing the needle tip and is biased toward the extended position and a portal sleeve surrounding the needle to establish communication with an anatomical cavity with penetration of tissue surrounding the cavity by the needle. The needle distal end has a leading edge defining the sharp tip and a trailing edge and the portal sleeve has a distal edge disposed in substantial alignment with or forward of the trailing edge of the needle distal end. A locking mechanism automatically locks the safety probe in the extended position after the safety probe is returned thereto or can optionally allow locking of the safety probe or allow proximal movement of the safety probe after return to the extended position. The locking mechanism also provides selective locking of the safety probe in the retracted position.
291 Citations
28 Claims
-
1. A safety penetrating instrument comprising
an elongate, tubular needle having a longitudinal axis, a proximal end and an angled, open distal end defining a peripheral edge having a leading edge defining a sharp tip for penetrating tissue and a trailing edge, said peripheral edge being disposed in a plane positioned at an acute angle relative to said longitudinal axis of said needle; -
a safety probe movably disposed in said needle having a proximal end and a distal end having an end surface disposed at substantially the same angle as said acute angle relative to said longitudinal axis of said needle, said safety probe being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed within said needle to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; housing means abutting said hub means; and an elongate, tubular portal sleeve surrounding said needle and having a proximal end secured to said housing means and a distal end having a peripheral edge disposed in substantial alignment with or forward of said trailing edge of said needle distal end whereby said needle and said portal sleeve present a substantially smooth profile to facilitate tissue penetration of said portal sleeve with said needle. - View Dependent Claims (2)
-
-
3. A safety penetrating instrument comprising distal end defining a sharp tip for penetrating tissue;
-
a safety probe movably disposed in said needle having a proximal end and a distal end and being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed proximally of said needle tip to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe, said hub means including a forward end and a rear end, valve means disposed at said rear end, and a tube communicating with said valve means and extending into said hub means from said rear end to be received in said safety probe; housing means abutting said hub means; an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to said housing means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and releasable locking means for automatically locking said safety probe in said extended position after said safety probe is returned to said extended position in response to removal of the force applied to said safety probe distal end. - View Dependent Claims (4, 5, 6, 7, 8, 9)
-
-
10. A safety penetrating instrument comprising
an elongate, tubular needle having a proximal end and an open distal end defining a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end and being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed proximally of said needle tip to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; housing means abutting said hub means; an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to said housing means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and releasable locking means for automatically locking said safety probe in said extended position after said safety probe is returned to said extended position in response to removal of the force applied to said safety probe distal end, said releasable locking means including means extending from said safety probe for permitting said safety probe to be pulled back from said extended position against the force from said bias means to expose said needle tip without requiring a force applied in a proximal direction to said safety probe distal end. - View Dependent Claims (11, 12, 13)
-
-
14. A safety penetrating instrument comprising
an elongate, tubular needle having a proximal end and an open distal end defining a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end and being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed proximally of said needle tip to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to housing means abutting said hub means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and releasable locking means for automatically locking said safety probe in said extended position after said safety probe is returned to said extended position in response to removal of the force applied to said safety probe distal end, said releasable locking means including slot means disposed in said hub means and pin means carried by said safety probe and received in said slot means. - View Dependent Claims (15, 16, 17)
-
-
18. A safety penetrating instrument comprising
an elongate, tubular needle having a longitudinal axis, a proximal end and an open distal end having a peripheral edge disposed in a plane at an acute angle relative to said longitudinal axis to define a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end terminating at an angled portion, said safety probe being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said angled portion of said safety probe distal end disposed substantially in said plane of said needle distal peripheral edge to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; housing means abutting said hub means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to said housing means. - View Dependent Claims (19, 20, 21)
-
-
22. A safety penetrating instrument comprising
an elongate, tubular needle having a proximal end and an open distal end defining a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end and being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed proximally of said needle tip to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; housing means abutting said hub means; an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to said housing means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and releasable locking means for selectively locking said safety probe in said retracted position. - View Dependent Claims (23, 24, 25, 26)
-
-
27. A safety penetrating instrument comprising
an elongate, tubular needle having a proximal end and an open distal end defining a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end and being movable between an extended position with said safety probe distal end protruding distally from said needle tip and a retracted position with said safety probe distal end disposed proximally of said needle tip to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to housing means abutting said hub means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and releasable locking means for optionally allowing said safety probe to be locked in said extended position or to be free to move proximally from said extended position after said safety probe is returned to said extended position in response to removal of the force applied to said safety probe distal end, said releasable locking means including a slot disposed in said hub means and a pin carried on said proximal end of said safety probe, and manually movable into said slot to lock said safety probe in said extended position.
-
-
28. A safety penetrating instrument comprising
an elongate, tubular needle having a longitudinal axis, a proximal end and an open distal end having a peripheral edge disposed in a plane at an acute angle relative to said longitudinal axis to define a sharp tip for penetrating tissue; -
a safety probe movably disposed in said needle having a proximal end and a distal end terminating at an angled portion, said safety probe being movable between an extended position with said safety probe distal end protruding distally from said needle tip and said angled portion of said safety probe distal end disposed substantially parallel with said plane of said needle distal peripheral edge and a retracted position with said safety probe distal end disposed in said needle to expose said needle tip; hub means for receiving said proximal ends of said needle and said safety probe; housing means abutting said hub means; bias means for biasing said safety probe toward said extended position and for permitting said safety probe to move to said retracted position in response to a proximally directed force applied to said safety probe distal end, said bias means returning said safety probe to said extended position when the force applied to said safety probe distal end is removed; and an elongate, tubular portal sleeve surrounding said needle and having a distal end disposed adjacent said needle distal end and a proximal end secured to said housing means.
-
Specification